/* roulang page: index */
:root {
            --color-primary: #123B2F;
            --color-primary-dark: #0F3D2E;
            --color-primary-deeper: #092B20;
            --color-bg-warm: #F5F7F2;
            --color-bg-light: #E9EDE4;
            --color-accent: #C6F432;
            --color-accent-deep: #B6E32E;
            --color-warning: #F2A104;
            --color-danger: #D94F30;
            --color-text-dark: #1A1D1B;
            --color-text-gray: #5A625D;
            --color-text-white: #FFFFFF;
            --color-card-bg: #FFFFFF;
            --color-border: #E1E7DE;
            --color-border-input: #D9E0D6;
            --radius-card: 14px;
            --radius-btn: 999px;
            --radius-input: 10px;
            --shadow-card: 0 2px 12px rgba(15, 61, 46, 0.06);
            --shadow-card-hover: 0 12px 28px rgba(15, 61, 46, 0.12);
            --shadow-nav: 0 1px 0 rgba(15, 61, 46, 0.08);
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-numeric: 'Roboto Condensed', 'DIN Alternate', 'Oswald', sans-serif;
            --transition-base: 200ms ease;
            --section-pad-desktop: 64px 0;
            --section-pad-mobile: 40px 0;
            --container-max: 1200px;
            --nav-height: 72px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text-dark);
            background-color: var(--color-bg-warm);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition-base), background-color var(--transition-base), border-color var(--transition-base), opacity var(--transition-base);
        }
        a:hover {
            color: var(--color-primary-dark);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
            border-radius: 4px;
        }

        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-heading);
            color: var(--color-text-dark);
            line-height: 1.3;
            margin-top: 0;
            font-weight: 700;
        }

        h1 { font-size: clamp(28px, 4vw, 42px); }
        h2 { font-size: clamp(24px, 3vw, 32px); }
        h3 { font-size: clamp(18px, 2.4vw, 24px); }
        h4 { font-size: clamp(16px, 2vw, 20px); }

        p {
            margin-top: 0;
            margin-bottom: 1rem;
        }
        .text-numeric {
            font-family: var(--font-numeric);
            letter-spacing: 0.02em;
        }
        .text-gray {
            color: var(--color-text-gray);
        }
        .text-primary {
            color: var(--color-primary);
        }
        .text-accent {
            color: var(--color-accent);
        }
        .text-warning {
            color: var(--color-warning);
        }
        .text-danger {
            color: var(--color-danger);
        }
        .fw-bold {
            font-weight: 700;
        }

        .container-main {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .container-wide {
            max-width: 1400px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        .section {
            padding: var(--section-pad-desktop);
        }
        .section-sm {
            padding: 40px 0;
        }
        .section-bg-warm {
            background-color: var(--color-bg-warm);
        }
        .section-bg-light {
            background-color: var(--color-bg-light);
        }
        .section-bg-dark {
            background-color: var(--color-primary);
            color: var(--color-text-white);
        }
        .section-bg-dark h1,
        .section-bg-dark h2,
        .section-bg-dark h3 {
            color: var(--color-text-white);
        }
        .section-bg-dark .text-gray {
            color: rgba(255, 255, 255, 0.7);
        }
        .section-bg-deeper {
            background-color: var(--color-primary-deeper);
            color: var(--color-text-white);
        }

        .section-header {
            margin-bottom: 2.5rem;
        }
        .section-header h2 {
            margin-bottom: 0.75rem;
        }
        .section-header p {
            margin-bottom: 0;
            max-width: 680px;
        }

        /* Header / Navigation */
        .site-header {
            background-color: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--color-border);
            position: sticky;
            top: 0;
            z-index: 999;
            width: 100%;
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }
        .site-header .container-main {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .brand-logo {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 22px;
            color: var(--color-primary);
            display: flex;
            align-items: center;
            gap: 10px;
            line-height: 1;
            white-space: nowrap;
        }
        .brand-logo a {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: inherit;
            text-decoration: none;
        }
        .brand-logo .logo-dot {
            display: inline-block;
            width: 12px;
            height: 12px;
            background-color: var(--color-accent);
            border-radius: 50%;
            flex-shrink: 0;
        }
        .brand-logo a:hover {
            color: var(--color-primary-dark);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
            flex-wrap: wrap;
        }
        .main-nav a {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-dark);
            position: relative;
            padding: 6px 0;
            text-decoration: none;
            transition: color var(--transition-base);
            white-space: nowrap;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background-color: var(--color-primary);
            transition: width var(--transition-base);
            border-radius: 1px;
        }
        .main-nav a:hover {
            color: var(--color-primary);
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .main-nav a.active {
            color: var(--color-primary);
            font-weight: 700;
        }
        .main-nav a.active::after {
            width: 100%;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 10px;
            font-size: 24px;
            color: var(--color-primary);
            line-height: 1;
        }
        .nav-toggle:hover {
            color: var(--color-primary-dark);
        }

        .mobile-nav {
            display: none;
            background-color: #fff;
            border-top: 1px solid var(--color-border);
            padding: 1rem 20px;
            flex-direction: column;
            gap: 0.75rem;
        }
        .mobile-nav a {
            display: block;
            padding: 10px 0;
            border-bottom: 1px solid var(--color-bg-light);
            font-size: 16px;
            font-weight: 500;
            color: var(--color-text-dark);
        }
        .mobile-nav a:last-child {
            border-bottom: none;
        }
        .mobile-nav a:hover {
            color: var(--color-primary);
        }
        .mobile-nav a.active {
            color: var(--color-primary);
            font-weight: 700;
        }
        .mobile-nav.is-open {
            display: flex;
        }

        /* Hero */
        .hero-section {
            background-color: var(--color-bg-warm);
            padding: 48px 0 64px;
            position: relative;
            overflow: hidden;
        }
        .hero-bg-decor {
            position: absolute;
            top: 0;
            right: 0;
            width: 45%;
            height: 100%;
            background-size: cover;
            background-position: center;
            opacity: 0.08;
            pointer-events: none;
            border-radius: 0 0 0 40px;
        }
        .hero-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            position: relative;
            z-index: 1;
        }
        .hero-left h1 {
            margin-bottom: 1rem;
            color: var(--color-primary);
            font-size: clamp(28px, 3.8vw, 42px);
            font-weight: 700;
            line-height: 1.25;
        }
        .hero-left .hero-subtitle {
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text-gray);
            max-width: 520px;
            margin-bottom: 1.5rem;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }
        .hero-right {
            position: relative;
            min-height: 320px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .hero-data-card {
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: 18px;
            box-shadow: var(--shadow-card);
            padding: 24px;
            width: 100%;
            max-width: 440px;
            position: relative;
            transition: box-shadow var(--transition-base);
        }
        .hero-data-card:hover {
            box-shadow: var(--shadow-card-hover);
        }
        .hero-data-card .data-label {
            font-size: 13px;
            color: var(--color-text-gray);
            text-transform: uppercase;
            letter-spacing: 0.08em;
            margin-bottom: 8px;
        }
        .hero-data-card .data-value {
            font-family: var(--font-numeric);
            font-size: 36px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 12px;
            line-height: 1.2;
        }
        .hero-data-card .data-row {
            display: flex;
            justify-content: space-between;
            border-top: 1px solid var(--color-bg-light);
            padding-top: 10px;
            margin-top: 4px;
            font-size: 13px;
            color: var(--color-text-gray);
        }
        .hero-data-card .data-row span:last-child {
            font-weight: 600;
            color: var(--color-text-dark);
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-family: var(--font-body);
            font-weight: 600;
            font-size: 15px;
            border-radius: var(--radius-btn);
            padding: 12px 22px;
            cursor: pointer;
            transition: all var(--transition-base);
            text-decoration: none;
            line-height: 1.4;
            border: 2px solid transparent;
            white-space: nowrap;
        }
        .btn-primary {
            background-color: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
        }
        .btn-primary:hover {
            background-color: var(--color-primary-dark);
            border-color: var(--color-primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(15, 61, 46, 0.18);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }
        .btn-secondary {
            background-color: transparent;
            border-color: var(--color-primary);
            color: var(--color-primary);
        }
        .btn-secondary:hover {
            background-color: var(--color-primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-accent {
            background-color: var(--color-accent);
            color: var(--color-primary);
            border-color: var(--color-accent);
        }
        .btn-accent:hover {
            background-color: var(--color-accent-deep);
            border-color: var(--color-accent-deep);
            color: var(--color-primary);
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(198, 244, 50, 0.3);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
        }
        .btn-lg {
            padding: 14px 26px;
            font-size: 16px;
        }

        /* Cards */
        .card {
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 24px;
            transition: transform var(--transition-base), box-shadow var(--transition-base);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
        }
        .card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 0.75rem;
            color: var(--color-text-dark);
        }
        .card p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-text-gray);
            margin-bottom: 0;
            flex: 1;
        }

        .card-media {
            margin-bottom: 16px;
            border-radius: 10px;
            overflow: hidden;
            height: 180px;
            background-color: var(--color-bg-light);
        }
        .card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-base);
        }
        .card:hover .card-media img {
            transform: scale(1.04);
        }
        .card-badge {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            background-color: var(--color-bg-light);
            color: var(--color-primary);
            margin-bottom: 10px;
            letter-spacing: 0.03em;
        }
        .card-badge-accent {
            background-color: var(--color-accent);
            color: var(--color-primary);
        }
        .card-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .card-list li {
            padding: 10px 0;
            border-bottom: 1px solid var(--color-bg-light);
            font-size: 14px;
            color: var(--color-text-gray);
            display: flex;
            align-items: flex-start;
            gap: 10px;
        }
        .card-list li:last-child {
            border-bottom: none;
        }
        .card-list li::before {
            content: '→';
            color: var(--color-accent-deep);
            font-weight: 700;
            flex-shrink: 0;
        }

        /* Tags / Badges */
        .tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            padding: 3px 10px;
            border-radius: 999px;
            background-color: var(--color-bg-light);
            color: var(--color-text-gray);
            margin-right: 6px;
            margin-bottom: 6px;
            letter-spacing: 0.02em;
        }
        .tag-link {
            text-decoration: none;
            transition: background-color var(--transition-base);
        }
        .tag-link:hover {
            background-color: var(--color-primary);
            color: #fff;
        }

        /* Lists */
        .article-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .article-item {
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: 12px;
            padding: 16px 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: flex-start;
            transition: box-shadow var(--transition-base), border-color var(--transition-base);
        }
        .article-item:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-primary);
        }
        .article-date {
            font-family: var(--font-numeric);
            font-size: 14px;
            font-weight: 600;
            color: var(--color-primary);
            min-width: 70px;
            padding-top: 2px;
        }
        .article-body {
            flex: 1;
            min-width: 200px;
        }
        .article-body h4 {
            font-size: 16px;
            margin-bottom: 4px;
            font-weight: 700;
            color: var(--color-text-dark);
        }
        .article-body h4 a {
            color: inherit;
            text-decoration: none;
        }
        .article-body h4 a:hover {
            color: var(--color-primary);
        }
        .article-body p {
            font-size: 13px;
            line-height: 1.65;
            color: var(--color-text-gray);
            margin-bottom: 8px;
        }
        .article-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .article-link:hover {
            color: var(--color-primary-dark);
            text-decoration: underline;
        }

        /* Data bar */
        .data-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 20px 40px;
            align-items: center;
            justify-content: space-between;
        }
        .data-item {
            text-align: left;
            flex: 1;
            min-width: 120px;
        }
        .data-item .number {
            font-family: var(--font-numeric);
            font-size: 36px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.2;
            display: block;
        }
        .data-item .label {
            font-size: 14px;
            color: var(--color-text-gray);
            margin-top: 4px;
        }
        .data-item-dark .number {
            color: var(--color-accent);
        }
        .data-item-dark .label {
            color: rgba(255, 255, 255, 0.7);
        }

        /* Steps */
        .step-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            counter-reset: step-counter;
        }
        .step-card {
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 20px;
            counter-increment: step-counter;
            position: relative;
            transition: box-shadow var(--transition-base);
        }
        .step-card:hover {
            box-shadow: var(--shadow-card-hover);
        }
        .step-card::before {
            content: counter(step-counter, decimal-leading-zero);
            font-family: var(--font-numeric);
            font-size: 48px;
            font-weight: 700;
            color: var(--color-bg-light);
            position: absolute;
            top: 10px;
            right: 16px;
            line-height: 1;
            pointer-events: none;
        }
        .step-card h4 {
            font-size: 17px;
            margin-bottom: 6px;
            font-weight: 700;
        }
        .step-card p {
            font-size: 13px;
            color: var(--color-text-gray);
            margin-bottom: 0;
        }

        /* League grid */
        .league-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 14px;
        }
        .league-card {
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: 12px;
            padding: 18px;
            text-align: center;
            cursor: pointer;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
            text-decoration: none;
            color: var(--color-text-dark);
            display: block;
        }
        .league-card:hover {
            border-color: var(--color-primary);
            box-shadow: var(--shadow-card-hover);
            color: var(--color-primary);
        }
        .league-card .league-name {
            font-weight: 700;
            font-size: 16px;
            margin-bottom: 4px;
        }
        .league-card .league-meta {
            font-size: 12px;
            color: var(--color-text-gray);
        }

        /* FAQ */
        .faq-item {
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: 12px;
            margin-bottom: 10px;
            overflow: hidden;
        }
        .faq-question {
            padding: 16px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            user-select: none;
            transition: background-color var(--transition-base);
        }
        .faq-question:hover {
            background-color: var(--color-bg-light);
        }
        .faq-question .faq-icon {
            font-size: 18px;
            color: var(--color-primary);
            transition: transform var(--transition-base);
            flex-shrink: 0;
        }
        .faq-answer {
            padding: 0 20px 16px;
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-text-gray);
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-item.open .faq-icon {
            transform: rotate(180deg);
        }

        /* Form */
        .form-group {
            margin-bottom: 16px;
        }
        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-text-dark);
            margin-bottom: 6px;
        }
        .form-input {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--color-border-input);
            border-radius: var(--radius-input);
            font-family: var(--font-body);
            font-size: 14px;
            color: var(--color-text-dark);
            background-color: #fff;
            transition: border-color var(--transition-base);
        }
        .form-input:focus {
            border-color: var(--color-accent-deep);
            outline: none;
        }
        .form-input::placeholder {
            color: #a0a8a0;
        }

        /* Guarantee strip */
        .guarantee-strip {
            background-color: var(--color-primary-deeper);
            color: var(--color-text-white);
            padding: 18px 0;
            text-align: center;
            font-size: 14px;
            letter-spacing: 0.02em;
        }
        .guarantee-strip strong {
            color: var(--color-accent);
            font-weight: 600;
        }

        /* Data tool banner */
        .tool-banner {
            background-color: var(--color-primary);
            color: var(--color-text-white);
            border-radius: var(--radius-card);
            padding: 28px 32px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }
        .tool-banner h3 {
            color: #fff;
            margin-bottom: 4px;
        }
        .tool-banner p {
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 0;
            font-size: 14px;
        }
        .tool-banner .btn {
            flex-shrink: 0;
        }

        /* Partner logos */
        .partner-row {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: center;
            gap: 24px 40px;
        }
        .partner-item {
            font-size: 16px;
            font-weight: 600;
            color: #98a098;
            letter-spacing: 0.05em;
            filter: grayscale(1);
            transition: color var(--transition-base), filter var(--transition-base);
            cursor: default;
        }
        .partner-item:hover {
            color: var(--color-text-gray);
            filter: grayscale(0.6);
        }

        /* Footer */
        .site-footer {
            background-color: var(--color-primary-deeper);
            color: rgba(255, 255, 255, 0.75);
            padding: 48px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            margin-bottom: 14px;
            font-weight: 700;
        }
        .footer-col p {
            font-size: 13px;
            line-height: 1.7;
            margin-bottom: 0;
        }
        .footer-col a {
            display: block;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 8px;
            text-decoration: none;
            transition: color var(--transition-base);
        }
        .footer-col a:hover {
            color: var(--color-accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
            text-decoration: none;
            margin-right: 8px;
        }
        .footer-bottom a:hover {
            color: var(--color-accent);
        }
        .footer-bottom .brand-name {
            color: #fff;
            font-weight: 600;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .main-nav {
                gap: 18px;
            }
            .main-nav a {
                font-size: 14px;
            }
            .hero-content {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .hero-right {
                min-height: auto;
            }
            .hero-bg-decor {
                width: 100%;
                height: 200px;
                top: auto;
                bottom: 0;
                opacity: 0.06;
                border-radius: 0;
            }
            .section {
                padding: 40px 0;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .nav-toggle {
                display: block;
            }
            .mobile-nav {
                display: flex;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background-color: #fff;
                border-bottom: 1px solid var(--color-border);
                box-shadow: 0 8px 16px rgba(0,0,0,0.06);
                max-height: 0;
                overflow: hidden;
                transition: max-height 300ms ease;
                padding: 0 20px;
                flex-direction: column;
                z-index: 998;
            }
            .mobile-nav.is-open {
                max-height: 60vh;
                overflow-y: auto;
                padding: 12px 20px;
            }
            .mobile-nav a {
                display: block;
                padding: 10px 0;
                border-bottom: 1px solid var(--color-bg-light);
                font-size: 15px;
            }
            .data-bar {
                gap: 16px;
            }
            .data-item .number {
                font-size: 28px;
            }
            .step-list {
                grid-template-columns: 1fr;
            }
            .league-grid {
                grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
            }
            .tool-banner {
                padding: 20px;
                flex-direction: column;
                text-align: center;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 520px) {
            .container-main,
            .container-wide {
                padding-left: 15px;
                padding-right: 15px;
            }
            .brand-logo {
                font-size: 18px;
            }
            .hero-left h1 {
                font-size: 26px;
            }
            .hero-actions {
                flex-direction: column;
            }
            .hero-data-card .data-value {
                font-size: 28px;
            }
            .card {
                padding: 18px;
            }
            .article-item {
                flex-direction: column;
                gap: 8px;
                padding: 14px 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
        }

/* roulang page: category2 */
:root {
            --color-primary: #123B2F;
            --color-primary-dark: #0F3D2E;
            --color-primary-deeper: #092B20;
            --color-bg-warm: #F5F7F2;
            --color-bg-light: #E9EDE4;
            --color-accent: #C6F432;
            --color-accent-deep: #B6E32E;
            --color-warning: #F2A104;
            --color-danger: #D94F30;
            --color-text-dark: #1A1D1B;
            --color-text-gray: #5A625D;
            --color-text-white: #FFFFFF;
            --color-card-bg: #FFFFFF;
            --color-border: #E1E7DE;
            --color-border-input: #D9E0D6;
            --radius-card: 14px;
            --radius-btn: 999px;
            --radius-input: 10px;
            --shadow-card: 0 2px 12px rgba(15, 61, 46, 0.06);
            --shadow-card-hover: 0 12px 28px rgba(15, 61, 46, 0.12);
            --shadow-nav: 0 1px 0 rgba(15, 61, 46, 0.08);
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-numeric: 'Roboto Condensed', 'DIN Alternate', 'Oswald', sans-serif;
            --transition-base: 200ms ease;
            --section-pad-desktop: 64px 0;
            --section-pad-mobile: 40px 0;
            --container-max: 1200px;
            --nav-height: 72px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text-dark);
            background-color: var(--color-bg-warm);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }
        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition-base), background-color var(--transition-base), border-color var(--transition-base), opacity var(--transition-base);
        }
        a:hover {
            color: var(--color-primary-dark);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .text-numeric {
            font-family: var(--font-numeric);
            letter-spacing: 0.02em;
        }
        .text-gray {
            color: var(--color-text-gray);
        }
        .text-primary {
            color: var(--color-primary);
        }
        .text-accent {
            color: var(--color-accent);
        }
        .text-warning {
            color: var(--color-warning);
        }
        .text-danger {
            color: var(--color-danger);
        }
        .container-main {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .container-wide {
            max-width: 1400px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .section {
            padding: var(--section-pad-desktop);
        }
        .section-sm {
            padding: 40px 0;
        }
        .section-bg-warm {
            background-color: var(--color-bg-warm);
        }
        .section-bg-light {
            background-color: var(--color-bg-light);
        }
        .section-bg-dark {
            background-color: var(--color-primary);
            color: var(--color-text-white);
        }
        .section-bg-dark h1,
        .section-bg-dark h2,
        .section-bg-dark h3,
        .section-bg-dark h4 {
            color: var(--color-text-white);
        }
        .section-bg-dark .text-gray {
            color: rgba(255, 255, 255, 0.7);
        }
        .section-bg-deeper {
            background-color: var(--color-primary-deeper);
            color: var(--color-text-white);
        }
        .section-header {
            margin-bottom: 2.5rem;
        }
        .section-header h2 {
            margin-bottom: 0.75rem;
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 28px;
            line-height: 1.3;
            color: var(--color-text-dark);
        }
        .section-header p {
            margin-bottom: 0;
            max-width: 680px;
            color: var(--color-text-gray);
            font-size: 16px;
        }

        /* Header / Navigation */
        .site-header {
            background-color: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--color-border);
            position: sticky;
            top: 0;
            z-index: 999;
            width: 100%;
            min-height: var(--nav-height);
            display: flex;
            align-items: center;
        }
        .site-header .container-main {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            flex-wrap: wrap;
        }
        .brand-logo {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 22px;
            color: var(--color-primary);
            display: flex;
            align-items: center;
            gap: 10px;
            line-height: 1;
            white-space: nowrap;
            padding: 16px 0;
        }
        .brand-logo a {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: inherit;
            text-decoration: none;
        }
        .brand-logo .logo-dot {
            display: inline-block;
            width: 12px;
            height: 12px;
            background-color: var(--color-accent);
            border-radius: 50%;
            flex-shrink: 0;
        }
        .brand-logo a:hover {
            color: var(--color-primary-dark);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
            flex-wrap: wrap;
            padding: 16px 0;
        }
        .main-nav a {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-dark);
            text-decoration: none;
            position: relative;
            padding: 4px 0;
            transition: color var(--transition-base);
            white-space: nowrap;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background-color: var(--color-primary);
            transition: width var(--transition-base);
        }
        .main-nav a:hover {
            color: var(--color-primary);
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .main-nav a.active {
            color: var(--color-primary);
            font-weight: 600;
        }
        .main-nav a.active::after {
            width: 100%;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 0;
            cursor: pointer;
            padding: 10px;
            color: var(--color-primary);
            font-size: 24px;
            line-height: 1;
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            background-color: #FFFFFF;
            border-bottom: 1px solid var(--color-border);
            width: 100%;
            padding: 16px 20px;
            gap: 12px;
        }
        .mobile-nav a {
            font-size: 16px;
            font-weight: 500;
            color: var(--color-text-dark);
            text-decoration: none;
            padding: 8px 0;
            border-bottom: 1px solid var(--color-bg-light);
        }
        .mobile-nav a.active {
            color: var(--color-primary);
            font-weight: 600;
        }

        /* Breadcrumb */
        .breadcrumb-bar {
            background-color: var(--color-bg-warm);
            padding: 18px 0;
            border-bottom: 1px solid var(--color-border);
        }
        .breadcrumb {
            font-size: 14px;
            color: var(--color-text-gray);
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .breadcrumb a {
            color: var(--color-primary);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            color: var(--color-primary-dark);
        }
        .breadcrumb .separator {
            color: var(--color-text-gray);
            opacity: 0.6;
        }
        .breadcrumb .current {
            color: var(--color-text-gray);
            font-weight: 500;
        }

        /* Page intro */
        .page-intro {
            padding: 48px 0 32px;
            background-color: var(--color-bg-warm);
        }
        .page-intro h1 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 36px;
            line-height: 1.3;
            color: var(--color-text-dark);
            margin-bottom: 16px;
        }
        .page-intro .intro-desc {
            font-size: 17px;
            color: var(--color-text-gray);
            max-width: 800px;
            line-height: 1.8;
            margin-bottom: 0;
        }

        /* Filter toolbar */
        .filter-toolbar {
            background-color: #FFFFFF;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 18px 20px;
            margin-bottom: 28px;
            box-shadow: var(--shadow-card);
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
        }
        .filter-toolbar .filter-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-dark);
            margin-right: 4px;
        }
        .filter-toolbar .filter-group {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            align-items: center;
        }
        .filter-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 999px;
            border: 1px solid var(--color-border);
            background-color: #FFFFFF;
            color: var(--color-text-gray);
            cursor: pointer;
            transition: all var(--transition-base);
            white-space: nowrap;
        }
        .filter-btn:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
        }
        .filter-btn.active {
            background-color: var(--color-primary);
            border-color: var(--color-primary);
            color: #FFFFFF;
        }
        .filter-select {
            padding: 8px 14px;
            border-radius: 10px;
            border: 1px solid var(--color-border-input);
            font-size: 14px;
            color: var(--color-text-dark);
            background-color: #FFFFFF;
            cursor: pointer;
            min-width: 120px;
        }
        .filter-select:focus {
            border-color: var(--color-accent);
            outline: none;
        }

        /* Tool cards grid */
        .tool-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
            gap: 24px;
            margin-bottom: 32px;
        }
        .tool-card {
            background-color: #FFFFFF;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: transform var(--transition-base), box-shadow var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .tool-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
        }
        .tool-card .card-img {
            aspect-ratio: 16/9;
            overflow: hidden;
            background-color: var(--color-bg-light);
        }
        .tool-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 400ms ease;
        }
        .tool-card:hover .card-img img {
            transform: scale(1.03);
        }
        .tool-card .card-body {
            padding: 20px 22px 22px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .tool-card .card-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-primary);
            background-color: var(--color-bg-light);
            border-radius: 999px;
            padding: 4px 12px;
            margin-bottom: 12px;
            align-self: flex-start;
        }
        .tool-card h3 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 19px;
            line-height: 1.4;
            margin-bottom: 10px;
            color: var(--color-text-dark);
        }
        .tool-card .card-desc {
            font-size: 14px;
            color: var(--color-text-gray);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }
        .tool-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--color-text-gray);
            border-top: 1px solid var(--color-bg-light);
            padding-top: 14px;
        }
        .tool-card .card-meta .date {
            font-family: var(--font-numeric);
            letter-spacing: 0.02em;
        }
        .tool-card .read-more {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: color var(--transition-base);
        }
        .tool-card .read-more:hover {
            color: var(--color-primary-dark);
        }
        .tool-card .read-more::after {
            content: '→';
            transition: transform var(--transition-base);
        }
        .tool-card .read-more:hover::after {
            transform: translateX(3px);
        }

        /* Tag section */
        .tag-cloud-section {
            background-color: var(--color-bg-light);
            border-radius: var(--radius-card);
            padding: 32px 28px;
            margin-bottom: 40px;
        }
        .tag-cloud-section h2 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 22px;
            color: var(--color-text-dark);
            margin-bottom: 18px;
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .tag-chip {
            display: inline-flex;
            align-items: center;
            font-size: 14px;
            font-weight: 500;
            padding: 8px 18px;
            border-radius: 999px;
            background-color: #FFFFFF;
            border: 1px solid var(--color-border);
            color: var(--color-text-dark);
            text-decoration: none;
            transition: all var(--transition-base);
        }
        .tag-chip:hover {
            background-color: var(--color-primary);
            border-color: var(--color-primary);
            color: #FFFFFF;
        }

        /* Service banner */
        .service-banner {
            background-color: var(--color-primary);
            border-radius: var(--radius-card);
            padding: 32px 32px;
            margin-bottom: 40px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            color: #FFFFFF;
        }
        .service-banner .banner-text h3 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 22px;
            color: #FFFFFF;
            margin-bottom: 8px;
        }
        .service-banner .banner-text p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 0;
            max-width: 560px;
        }
        .btn-accent {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background-color: var(--color-accent);
            color: var(--color-primary-deeper);
            font-weight: 600;
            font-size: 15px;
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            text-decoration: none;
            transition: background-color var(--transition-base), transform var(--transition-base);
            border: 0;
            cursor: pointer;
            white-space: nowrap;
        }
        .btn-accent:hover {
            background-color: var(--color-accent-deep);
            transform: translateY(-1px);
            color: var(--color-primary-deeper);
        }

        /* Subscribe CTA */
        .subscribe-cta {
            background-color: #FFFFFF;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 36px 32px;
            margin-bottom: 40px;
            box-shadow: var(--shadow-card);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }
        .subscribe-cta .cta-text h3 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 22px;
            color: var(--color-text-dark);
            margin-bottom: 8px;
        }
        .subscribe-cta .cta-text p {
            font-size: 15px;
            color: var(--color-text-gray);
            margin-bottom: 0;
            max-width: 520px;
        }
        .subscribe-form {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
        }
        .subscribe-form input[type="email"] {
            padding: 12px 18px;
            border-radius: var(--radius-input);
            border: 1px solid var(--color-border-input);
            font-size: 15px;
            color: var(--color-text-dark);
            min-width: 260px;
            background-color: #FFFFFF;
            transition: border-color var(--transition-base);
        }
        .subscribe-form input[type="email"]:focus {
            border-color: var(--color-accent);
            outline: none;
        }
        .subscribe-form input[type="email"]::placeholder {
            color: #9AA39B;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background-color: var(--color-primary);
            color: #FFFFFF;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            text-decoration: none;
            border: 0;
            cursor: pointer;
            transition: background-color var(--transition-base), transform var(--transition-base);
            white-space: nowrap;
        }
        .btn-primary:hover {
            background-color: var(--color-primary-dark);
            transform: translateY(-1px);
            color: #FFFFFF;
        }

        /* Small FAQ */
        .mini-faq {
            margin-bottom: 40px;
        }
        .mini-faq .faq-item {
            background-color: #FFFFFF;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            margin-bottom: 12px;
            box-shadow: var(--shadow-card);
            overflow: hidden;
        }
        .mini-faq .faq-question {
            padding: 18px 22px;
            font-family: var(--font-heading);
            font-weight: 600;
            font-size: 16px;
            color: var(--color-text-dark);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            transition: background-color var(--transition-base);
        }
        .mini-faq .faq-question:hover {
            background-color: var(--color-bg-warm);
        }
        .mini-faq .faq-question::after {
            content: '+';
            font-size: 22px;
            color: var(--color-primary);
            font-weight: 400;
            transition: transform var(--transition-base);
            flex-shrink: 0;
        }
        .mini-faq .faq-item.open .faq-question::after {
            content: '−';
        }
        .mini-faq .faq-answer {
            padding: 0 22px 18px;
            font-size: 15px;
            color: var(--color-text-gray);
            line-height: 1.7;
            display: none;
        }
        .mini-faq .faq-item.open .faq-answer {
            display: block;
        }
        .mini-faq h2 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 22px;
            color: var(--color-text-dark);
            margin-bottom: 18px;
        }

        /* Risk notice */
        .risk-notice {
            background-color: var(--color-bg-light);
            border-left: 4px solid var(--color-warning);
            border-radius: 10px;
            padding: 20px 24px;
            margin-bottom: 24px;
        }
        .risk-notice p {
            font-size: 14px;
            color: var(--color-text-gray);
            margin-bottom: 0;
            line-height: 1.7;
        }
        .risk-notice strong {
            color: var(--color-text-dark);
            font-weight: 600;
        }

        /* Footer */
        .site-footer {
            background-color: var(--color-primary-deeper);
            color: rgba(255, 255, 255, 0.8);
            padding: 56px 0 28px;
            margin-top: 40px;
        }
        .site-footer .container-main {
            max-width: var(--container-max);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-bottom: 40px;
        }
        .footer-col h4 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 17px;
            color: #FFFFFF;
            margin-bottom: 18px;
        }
        .footer-col p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 0;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            margin-bottom: 10px;
            transition: color var(--transition-base);
        }
        .footer-col a:hover {
            color: var(--color-accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.55);
            text-decoration: none;
            transition: color var(--transition-base);
        }
        .footer-bottom a:hover {
            color: var(--color-accent);
        }
        .footer-bottom .brand-name {
            color: #FFFFFF;
            font-weight: 600;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .main-nav {
                gap: 18px;
            }
            .main-nav a {
                font-size: 14px;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .page-intro h1 {
                font-size: 30px;
            }
        }
        @media (max-width: 768px) {
            .section {
                padding: var(--section-pad-mobile);
            }
            .page-intro {
                padding: 32px 0 24px;
            }
            .page-intro h1 {
                font-size: 26px;
            }
            .tool-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .nav-toggle {
                display: block;
            }
            .main-nav {
                display: none;
            }
            .mobile-nav.show {
                display: flex;
            }
            .service-banner {
                flex-direction: column;
                align-items: flex-start;
                padding: 24px;
            }
            .subscribe-cta {
                flex-direction: column;
                align-items: flex-start;
                padding: 24px;
            }
            .subscribe-form {
                width: 100%;
            }
            .subscribe-form input[type="email"] {
                min-width: 100%;
                flex: 1;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }
        @media (max-width: 520px) {
            .container-main,
            .container-wide {
                padding-left: 16px;
                padding-right: 16px;
            }
            .page-intro h1 {
                font-size: 22px;
            }
            .filter-toolbar {
                flex-direction: column;
                align-items: flex-start;
            }
            .filter-toolbar .filter-group {
                width: 100%;
            }
            .filter-btn {
                font-size: 12px;
                padding: 6px 12px;
            }
            .brand-logo {
                font-size: 18px;
            }
            .tool-card .card-body {
                padding: 16px 18px 18px;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #123B2F;
            --color-primary-dark: #0F3D2E;
            --color-primary-deeper: #092B20;
            --color-bg-warm: #F5F7F2;
            --color-bg-light: #E9EDE4;
            --color-accent: #C6F432;
            --color-accent-deep: #B6E32E;
            --color-warning: #F2A104;
            --color-danger: #D94F30;
            --color-text-dark: #1A1D1B;
            --color-text-gray: #5A625D;
            --color-text-white: #FFFFFF;
            --color-card-bg: #FFFFFF;
            --color-border: #E1E7DE;
            --color-border-input: #D9E0D6;
            --radius-card: 14px;
            --radius-btn: 999px;
            --radius-input: 10px;
            --shadow-card: 0 2px 12px rgba(15, 61, 46, 0.06);
            --shadow-card-hover: 0 12px 28px rgba(15, 61, 46, 0.12);
            --shadow-nav: 0 1px 0 rgba(15, 61, 46, 0.08);
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-numeric: 'Roboto Condensed', 'DIN Alternate', 'Oswald', sans-serif;
            --transition-base: 200ms ease;
            --section-pad-desktop: 64px 0;
            --section-pad-mobile: 40px 0;
            --container-max: 1200px;
            --nav-height: 72px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text-dark);
            background-color: var(--color-bg-warm);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-heading);
            color: var(--color-text-dark);
            line-height: 1.3;
            margin: 0 0 0.75rem;
            font-weight: 700;
        }

        h1 {
            font-size: 32px;
        }
        h2 {
            font-size: 26px;
        }
        h3 {
            font-size: 20px;
        }
        h4 {
            font-size: 17px;
        }

        p {
            margin: 0 0 1rem;
            color: var(--color-text-dark);
        }
        .text-gray {
            color: var(--color-text-gray);
        }
        .text-gray p {
            color: var(--color-text-gray);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition-base), background-color var(--transition-base), border-color var(--transition-base), opacity var(--transition-base);
        }
        a:hover {
            color: var(--color-primary-dark);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .text-numeric {
            font-family: var(--font-numeric);
            letter-spacing: 0.02em;
        }
        .text-primary {
            color: var(--color-primary);
        }
        .text-accent {
            color: var(--color-accent);
        }
        .text-warning {
            color: var(--color-warning);
        }
        .text-danger {
            color: var(--color-danger);
        }

        .container-main {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .container-wide {
            max-width: 1400px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        .section {
            padding: var(--section-pad-desktop);
        }
        .section-sm {
            padding: 40px 0;
        }
        .section-bg-warm {
            background-color: var(--color-bg-warm);
        }
        .section-bg-light {
            background-color: var(--color-bg-light);
        }
        .section-bg-dark {
            background-color: var(--color-primary);
            color: var(--color-text-white);
        }
        .section-bg-dark h1,
        .section-bg-dark h2,
        .section-bg-dark h3,
        .section-bg-dark h4 {
            color: var(--color-text-white);
        }
        .section-bg-dark p {
            color: rgba(255, 255, 255, 0.82);
        }
        .section-bg-dark .text-gray {
            color: rgba(255, 255, 255, 0.7);
        }
        .section-bg-deeper {
            background-color: var(--color-primary-deeper);
            color: var(--color-text-white);
        }
        .section-header {
            margin-bottom: 2.5rem;
        }
        .section-header h2 {
            margin-bottom: 0.75rem;
        }
        .section-header p {
            margin-bottom: 0;
            max-width: 680px;
        }

        /* Header / Navigation */
        .site-header {
            background-color: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--color-border);
            position: sticky;
            top: 0;
            z-index: 999;
            width: 100%;
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }
        .site-header .container-main {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .brand-logo {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 22px;
            color: var(--color-primary);
            display: flex;
            align-items: center;
            gap: 10px;
            line-height: 1;
            white-space: nowrap;
        }
        .brand-logo a {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: inherit;
            text-decoration: none;
        }
        .brand-logo .logo-dot {
            display: inline-block;
            width: 12px;
            height: 12px;
            background-color: var(--color-accent);
            border-radius: 50%;
            flex-shrink: 0;
        }
        .brand-logo a:hover {
            color: var(--color-primary-dark);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .main-nav a {
            display: inline-block;
            padding: 6px 0;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-gray);
            position: relative;
            white-space: nowrap;
            text-decoration: none;
            transition: color var(--transition-base);
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            background-color: var(--color-primary);
            transform: scaleX(0);
            transform-origin: left center;
            transition: transform var(--transition-base);
        }
        .main-nav a:hover {
            color: var(--color-primary);
        }
        .main-nav a:hover::after {
            transform: scaleX(1);
        }
        .main-nav a.active {
            color: var(--color-primary);
            font-weight: 600;
        }
        .main-nav a.active::after {
            transform: scaleX(1);
            background-color: var(--color-accent-deep);
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 6px;
        }
        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background-color: var(--color-primary);
            border-radius: 2px;
        }

        /* Breadcrumb */
        .breadcrumb-bar {
            padding: 18px 0;
            border-bottom: 1px solid var(--color-border);
            background-color: var(--color-card-bg);
        }
        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-text-gray);
            flex-wrap: wrap;
        }
        .breadcrumb-nav a {
            color: var(--color-text-gray);
            text-decoration: none;
        }
        .breadcrumb-nav a:hover {
            color: var(--color-primary);
        }
        .breadcrumb-nav .separator {
            color: var(--color-border);
        }
        .breadcrumb-nav .current {
            color: var(--color-primary);
            font-weight: 600;
        }

        /* Page Hero Header */
        .page-hero {
            padding: 36px 0 28px;
            background-color: var(--color-card-bg);
            border-bottom: 1px solid var(--color-border);
        }
        .page-hero .container-main {
            display: flex;
            align-items: flex-start;
            gap: 32px;
            flex-wrap: wrap;
        }
        .page-hero-content {
            flex: 1;
            min-width: 0;
        }
        .page-hero-content h1 {
            font-size: 34px;
            margin-bottom: 12px;
            color: var(--color-primary);
        }
        .page-hero-content .hero-desc {
            font-size: 16px;
            color: var(--color-text-gray);
            max-width: 720px;
            margin-bottom: 0;
            line-height: 1.75;
        }
        .page-hero-media {
            flex: 0 0 280px;
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-card);
        }
        .page-hero-media img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }

        /* Filter Toolbar */
        .filter-bar {
            padding: 16px 0;
            background-color: var(--color-bg-warm);
            border-bottom: 1px solid var(--color-border);
        }
        .filter-bar .container-main {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
        }
        .filter-group {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .filter-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-gray);
            white-space: nowrap;
        }
        .filter-btn {
            padding: 8px 16px;
            border-radius: var(--radius-btn);
            border: 1px solid var(--color-border);
            background-color: var(--color-card-bg);
            color: var(--color-text-gray);
            font-size: 14px;
            cursor: pointer;
            transition: all var(--transition-base);
            white-space: nowrap;
        }
        .filter-btn:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
        }
        .filter-btn.active {
            background-color: var(--color-primary);
            color: var(--color-text-white);
            border-color: var(--color-primary);
        }
        .filter-select {
            padding: 8px 32px 8px 14px;
            border-radius: var(--radius-input);
            border: 1px solid var(--color-border-input);
            background-color: var(--color-card-bg);
            color: var(--color-text-dark);
            font-size: 14px;
            cursor: pointer;
            transition: border-color var(--transition-base);
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%235A625D' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 12px center;
        }
        .filter-select:focus {
            border-color: var(--color-accent);
            outline: none;
        }

        /* News List */
        .news-list-section {
            padding: 32px 0 48px;
            background-color: var(--color-card-bg);
        }
        .news-list-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .news-card {
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: transform var(--transition-base), box-shadow var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
        }
        .news-card-media {
            height: 190px;
            overflow: hidden;
            position: relative;
        }
        .news-card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .news-card-body {
            padding: 18px 20px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .news-card-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 10px;
            flex-wrap: wrap;
        }
        .news-date {
            font-family: var(--font-numeric);
            font-size: 13px;
            color: var(--color-text-gray);
            letter-spacing: 0.03em;
        }
        .news-tag {
            display: inline-block;
            padding: 3px 10px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 500;
            background-color: var(--color-bg-light);
            color: var(--color-primary);
            border: 1px solid var(--color-border);
        }
        .news-card-body h3 {
            font-size: 18px;
            margin-bottom: 8px;
            line-height: 1.4;
            color: var(--color-text-dark);
        }
        .news-card-body h3 a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-base);
        }
        .news-card-body h3 a:hover {
            color: var(--color-primary);
        }
        .news-excerpt {
            font-size: 14px;
            color: var(--color-text-gray);
            line-height: 1.65;
            margin-bottom: 14px;
            flex: 1;
        }
        .read-more-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition-base);
            align-self: flex-start;
        }
        .read-more-link::after {
            content: '→';
            transition: transform var(--transition-base);
        }
        .read-more-link:hover {
            color: var(--color-primary-dark);
        }
        .read-more-link:hover::after {
            transform: translateX(3px);
        }

        /* Hot Tags */
        .hot-tags-section {
            padding: 32px 0;
            background-color: var(--color-bg-warm);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }
        .hot-tags-wrap {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }
        .hot-tags-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--color-primary);
            white-space: nowrap;
        }
        .hot-tag-link {
            display: inline-block;
            padding: 7px 18px;
            border-radius: 999px;
            border: 1px solid var(--color-border);
            background-color: var(--color-card-bg);
            color: var(--color-text-gray);
            font-size: 14px;
            text-decoration: none;
            transition: all var(--transition-base);
        }
        .hot-tag-link:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background-color: var(--color-bg-light);
        }

        /* Data Tools Strip */
        .data-tools-strip {
            padding: 20px 0;
            background-color: var(--color-primary);
            color: var(--color-text-white);
        }
        .data-tools-strip .container-main {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
        }
        .data-tools-strip .tools-text {
            font-size: 16px;
            font-weight: 500;
            color: var(--color-text-white);
        }
        .data-tools-strip .tools-text span {
            color: var(--color-accent);
            font-weight: 700;
        }
        .tools-link-btn {
            display: inline-block;
            padding: 10px 22px;
            border-radius: var(--radius-btn);
            background-color: var(--color-accent);
            color: var(--color-primary);
            font-weight: 600;
            font-size: 14px;
            text-decoration: none;
            transition: background-color var(--transition-base);
            white-space: nowrap;
        }
        .tools-link-btn:hover {
            background-color: var(--color-accent-deep);
            color: var(--color-primary);
        }

        /* Subscribe CTA */
        .subscribe-section {
            padding: 40px 0;
            background-color: var(--color-card-bg);
        }
        .subscribe-box {
            background-color: var(--color-primary);
            border-radius: var(--radius-card);
            padding: 36px 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }
        .subscribe-info h3 {
            color: var(--color-text-white);
            font-size: 22px;
            margin-bottom: 8px;
        }
        .subscribe-info p {
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 0;
            font-size: 15px;
        }
        .subscribe-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            min-width: 280px;
            flex: 0 0 auto;
        }
        .subscribe-input {
            padding: 12px 18px;
            border-radius: var(--radius-input);
            border: 1px solid rgba(255, 255, 255, 0.25);
            background-color: rgba(255, 255, 255, 0.12);
            color: var(--color-text-white);
            font-size: 14px;
            min-width: 240px;
            transition: border-color var(--transition-base), background-color var(--transition-base);
        }
        .subscribe-input::placeholder {
            color: rgba(255, 255, 255, 0.6);
        }
        .subscribe-input:focus {
            border-color: var(--color-accent);
            background-color: rgba(255, 255, 255, 0.2);
            outline: none;
        }
        .subscribe-btn {
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            border: none;
            background-color: var(--color-accent);
            color: var(--color-primary);
            font-weight: 600;
            font-size: 14px;
            cursor: pointer;
            transition: background-color var(--transition-base);
            white-space: nowrap;
        }
        .subscribe-btn:hover {
            background-color: var(--color-accent-deep);
        }

        /* FAQ */
        .faq-section {
            padding: 40px 0;
            background-color: var(--color-bg-warm);
        }
        .faq-item {
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .faq-question {
            padding: 16px 20px;
            font-weight: 600;
            font-size: 16px;
            color: var(--color-text-dark);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            transition: background-color var(--transition-base);
        }
        .faq-question:hover {
            background-color: var(--color-bg-light);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background-color: var(--color-bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: var(--color-primary);
            transition: transform var(--transition-base);
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
            background-color: var(--color-accent);
            color: var(--color-primary);
        }
        .faq-answer {
            padding: 0 20px 18px;
            font-size: 15px;
            color: var(--color-text-gray);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }

        /* Risk Notice */
        .risk-section {
            padding: 28px 0;
            background-color: var(--color-bg-light);
            border-top: 1px solid var(--color-border);
        }
        .risk-box {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 20px 24px;
            background-color: var(--color-card-bg);
            border-radius: var(--radius-card);
            border-left: 4px solid var(--color-warning);
        }
        .risk-icon {
            flex-shrink: 0;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background-color: rgba(242, 161, 4, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--color-warning);
            font-weight: 700;
        }
        .risk-box p {
            margin-bottom: 0;
            font-size: 14px;
            color: var(--color-text-gray);
            line-height: 1.65;
        }
        .risk-box p strong {
            color: var(--color-text-dark);
        }

        /* Footer */
        .site-footer {
            background-color: var(--color-primary-deeper);
            color: rgba(255, 255, 255, 0.78);
            padding: 48px 0 24px;
        }
        .site-footer .container-main {
            position: relative;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-col h4 {
            color: var(--color-text-white);
            font-size: 16px;
            margin-bottom: 16px;
            font-weight: 600;
        }
        .footer-col p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 0;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.72);
            text-decoration: none;
            margin-bottom: 8px;
            transition: color var(--transition-base);
        }
        .footer-col a:hover {
            color: var(--color-accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
        }
        .footer-bottom .brand-name {
            color: var(--color-text-white);
            font-weight: 600;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.55);
            text-decoration: none;
            transition: color var(--transition-base);
        }
        .footer-bottom a:hover {
            color: var(--color-accent);
        }

        /* Responsive */
        @media screen and (max-width: 1024px) {
            .main-nav {
                gap: 20px;
            }
            .main-nav a {
                font-size: 14px;
            }
            .news-list-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .page-hero-media {
                flex-basis: 240px;
            }
        }

        @media screen and (max-width: 768px) {
            :root {
                --section-pad-desktop: 40px 0;
                --nav-height: 64px;
            }
            h1 {
                font-size: 28px;
            }
            h2 {
                font-size: 22px;
            }
            h3 {
                font-size: 18px;
            }
            .nav-toggle {
                display: flex;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background-color: var(--color-card-bg);
                border-bottom: 1px solid var(--color-border);
                flex-direction: column;
                align-items: flex-start;
                gap: 0;
                padding: 12px 20px 20px;
                box-shadow: 0 8px 24px rgba(15, 61, 46, 0.1);
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                display: block;
                width: 100%;
                padding: 10px 0;
                font-size: 16px;
                border-bottom: 1px solid var(--color-bg-light);
            }
            .main-nav a:last-child {
                border-bottom: none;
            }
            .main-nav a::after {
                display: none;
            }
            .page-hero {
                padding: 28px 0 24px;
            }
            .page-hero .container-main {
                flex-direction: column;
                gap: 20px;
            }
            .page-hero-media {
                flex-basis: auto;
                width: 100%;
            }
            .page-hero-media img {
                height: 160px;
            }
            .page-hero-content h1 {
                font-size: 26px;
            }
            .news-list-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .news-card-media {
                height: 170px;
            }
            .subscribe-box {
                flex-direction: column;
                align-items: flex-start;
                padding: 28px 24px;
            }
            .subscribe-input {
                min-width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media screen and (max-width: 520px) {
            .container-main {
                padding-left: 15px;
                padding-right: 15px;
            }
            .brand-logo {
                font-size: 19px;
            }
            .filter-bar .container-main {
                gap: 10px;
            }
            .filter-btn {
                padding: 6px 12px;
                font-size: 13px;
            }
            .filter-select {
                padding: 6px 28px 6px 10px;
                font-size: 13px;
            }
            .news-card-body {
                padding: 14px 16px 16px;
            }
            .news-card-body h3 {
                font-size: 16px;
            }
            .news-excerpt {
                font-size: 13px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .data-tools-strip .container-main {
                flex-direction: column;
                align-items: flex-start;
            }
            .hot-tags-wrap {
                gap: 8px;
            }
        }

/* roulang page: category3 */
:root {
            --color-primary: #123B2F;
            --color-primary-dark: #0F3D2E;
            --color-primary-deeper: #092B20;
            --color-bg-warm: #F5F7F2;
            --color-bg-light: #E9EDE4;
            --color-accent: #C6F432;
            --color-accent-deep: #B6E32E;
            --color-warning: #F2A104;
            --color-danger: #D94F30;
            --color-text-dark: #1A1D1B;
            --color-text-gray: #5A625D;
            --color-text-white: #FFFFFF;
            --color-card-bg: #FFFFFF;
            --color-border: #E1E7DE;
            --color-border-input: #D9E0D6;
            --radius-card: 14px;
            --radius-btn: 999px;
            --radius-input: 10px;
            --shadow-card: 0 2px 12px rgba(15, 61, 46, 0.06);
            --shadow-card-hover: 0 12px 28px rgba(15, 61, 46, 0.12);
            --shadow-nav: 0 1px 0 rgba(15, 61, 46, 0.08);
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-numeric: 'Roboto Condensed', 'DIN Alternate', 'Oswald', sans-serif;
            --transition-base: 200ms ease;
            --section-pad-desktop: 64px 0;
            --section-pad-mobile: 40px 0;
            --container-max: 1200px;
            --nav-height: 72px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text-dark);
            background-color: var(--color-bg-warm);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }
        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition-base), background-color var(--transition-base), border-color var(--transition-base), opacity var(--transition-base);
        }
        a:hover {
            color: var(--color-primary-dark);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .text-numeric {
            font-family: var(--font-numeric);
            letter-spacing: 0.02em;
        }
        .text-gray {
            color: var(--color-text-gray);
        }
        .text-primary {
            color: var(--color-primary);
        }
        .text-accent {
            color: var(--color-accent);
        }
        .text-warning {
            color: var(--color-warning);
        }
        .text-danger {
            color: var(--color-danger);
        }
        .container-main {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .container-wide {
            max-width: 1400px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .section {
            padding: var(--section-pad-desktop);
        }
        .section-sm {
            padding: 40px 0;
        }
        .section-bg-warm {
            background-color: var(--color-bg-warm);
        }
        .section-bg-light {
            background-color: var(--color-bg-light);
        }
        .section-bg-dark {
            background-color: var(--color-primary);
            color: var(--color-text-white);
        }
        .section-bg-dark h1,
        .section-bg-dark h2,
        .section-bg-dark h3 {
            color: var(--color-text-white);
        }
        .section-bg-dark .text-gray {
            color: rgba(255, 255, 255, 0.7);
        }
        .section-bg-deeper {
            background-color: var(--color-primary-deeper);
            color: var(--color-text-white);
        }
        .section-header {
            margin-bottom: 2.5rem;
        }
        .section-header h2 {
            margin-bottom: 0.75rem;
        }
        .section-header p {
            margin-bottom: 0;
            max-width: 680px;
        }
        .site-header {
            background-color: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--color-border);
            position: sticky;
            top: 0;
            z-index: 999;
            width: 100%;
            min-height: var(--nav-height);
            display: flex;
            align-items: center;
        }
        .site-header .container-main {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            flex-wrap: wrap;
        }
        .brand-logo {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 22px;
            color: var(--color-primary);
            display: flex;
            align-items: center;
            gap: 10px;
            line-height: 1;
            white-space: nowrap;
        }
        .brand-logo a {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: inherit;
            text-decoration: none;
        }
        .brand-logo .logo-dot {
            display: inline-block;
            width: 12px;
            height: 12px;
            background-color: var(--color-accent);
            border-radius: 50%;
            flex-shrink: 0;
        }
        .brand-logo a:hover {
            color: var(--color-primary-dark);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
            flex-wrap: wrap;
        }
        .main-nav a {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-dark);
            padding: 8px 2px;
            position: relative;
            white-space: nowrap;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background-color: var(--color-primary);
            transition: width var(--transition-base);
        }
        .main-nav a:hover {
            color: var(--color-primary);
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .main-nav a.active {
            color: var(--color-primary);
            font-weight: 600;
        }
        .main-nav a.active::after {
            width: 100%;
            background-color: var(--color-accent-deep);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            color: var(--color-primary);
            font-size: 24px;
            line-height: 1;
        }
        .mobile-nav {
            display: none;
            width: 100%;
            background-color: #FFFFFF;
            border-top: 1px solid var(--color-border);
            padding: 16px 20px;
            flex-direction: column;
            gap: 4px;
        }
        .mobile-nav a {
            display: block;
            padding: 12px 4px;
            font-size: 16px;
            font-weight: 500;
            color: var(--color-text-dark);
            border-bottom: 1px solid var(--color-bg-light);
        }
        .mobile-nav a:last-child {
            border-bottom: none;
        }
        .mobile-nav a.active {
            color: var(--color-primary);
            font-weight: 600;
        }
        .mobile-nav a:hover {
            color: var(--color-primary);
            background-color: var(--color-bg-warm);
        }
        .breadcrumb-bar {
            background-color: transparent;
            padding: 24px 0 0;
            font-size: 14px;
        }
        .breadcrumb-bar .breadcrumb-list {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
        }
        .breadcrumb-bar .breadcrumb-list li {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--color-text-gray);
        }
        .breadcrumb-bar .breadcrumb-list li + li::before {
            content: '/';
            color: #B8C0B5;
            font-size: 13px;
        }
        .breadcrumb-bar a {
            color: var(--color-text-gray);
        }
        .breadcrumb-bar a:hover {
            color: var(--color-primary);
        }
        .category-hero {
            padding: 32px 0 40px;
        }
        .category-hero h1 {
            font-size: 32px;
            line-height: 1.3;
            margin-bottom: 12px;
            color: var(--color-primary);
            font-family: var(--font-heading);
            font-weight: 700;
        }
        .category-hero .hero-desc {
            font-size: 16px;
            color: var(--color-text-gray);
            max-width: 820px;
            line-height: 1.75;
            margin-bottom: 0;
        }
        .filter-toolbar {
            background-color: #FFFFFF;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 20px 24px;
            margin-bottom: 32px;
            box-shadow: var(--shadow-card);
        }
        .filter-toolbar .filter-row {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
        }
        .filter-toolbar .filter-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-dark);
            white-space: nowrap;
        }
        .filter-toolbar select,
        .filter-toolbar input[type="text"] {
            border: 1px solid var(--color-border-input);
            border-radius: var(--radius-input);
            padding: 10px 14px;
            font-size: 14px;
            color: var(--color-text-dark);
            background-color: #FFFFFF;
            min-width: 140px;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }
        .filter-toolbar select:focus,
        .filter-toolbar input[type="text"]:focus {
            border-color: var(--color-accent-deep);
            box-shadow: 0 0 0 2px rgba(198, 244, 50, 0.18);
            outline: none;
        }
        .guide-card {
            background-color: #FFFFFF;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            margin-bottom: 24px;
            transition: transform var(--transition-base), box-shadow var(--transition-base);
        }
        .guide-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
        }
        .guide-card .guide-card-body {
            padding: 24px 28px;
        }
        .guide-card .guide-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: var(--color-text-gray);
            margin-bottom: 10px;
        }
        .guide-card .guide-meta .badge {
            display: inline-block;
            background-color: var(--color-bg-light);
            color: var(--color-primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            white-space: nowrap;
        }
        .guide-card .guide-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text-dark);
            margin-bottom: 10px;
            line-height: 1.45;
            font-family: var(--font-heading);
        }
        .guide-card .guide-title a {
            color: inherit;
            text-decoration: none;
        }
        .guide-card .guide-title a:hover {
            color: var(--color-primary);
        }
        .guide-card .guide-excerpt {
            font-size: 15px;
            color: var(--color-text-gray);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .guide-card .guide-card-footer {
            display: flex;
            align-items: center;
            justify-content: flex-start;
            gap: 16px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 14px;
            padding: 12px 22px;
            border-radius: var(--radius-btn);
            border: none;
            cursor: pointer;
            transition: background-color var(--transition-base), color var(--transition-base), border-color var(--transition-base), transform var(--transition-base);
            text-decoration: none;
            line-height: 1.2;
            font-family: var(--font-body);
        }
        .btn-primary {
            background-color: var(--color-primary);
            color: var(--color-text-white);
        }
        .btn-primary:hover {
            background-color: var(--color-primary-dark);
            color: var(--color-text-white);
            transform: translateY(-1px);
        }
        .btn-secondary {
            background-color: transparent;
            color: var(--color-primary);
            border: 1px solid var(--color-primary);
        }
        .btn-secondary:hover {
            background-color: var(--color-primary);
            color: var(--color-text-white);
        }
        .btn-accent {
            background-color: var(--color-accent);
            color: var(--color-primary-deeper);
        }
        .btn-accent:hover {
            background-color: var(--color-accent-deep);
            color: var(--color-primary-deeper);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
        }
        .badge {
            display: inline-block;
            background-color: var(--color-bg-light);
            color: var(--color-primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            white-space: nowrap;
        }
        .badge-accent {
            background-color: var(--color-accent);
            color: var(--color-primary-deeper);
        }
        .badge-warning {
            background-color: #FFF3DC;
            color: #A26B00;
        }
        .badge-danger {
            background-color: #FDE8E4;
            color: var(--color-danger);
        }
        .topic-panel {
            background-color: #FFFFFF;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 28px;
            box-shadow: var(--shadow-card);
        }
        .topic-panel h2 {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-text-dark);
            margin-bottom: 16px;
            font-family: var(--font-heading);
        }
        .topic-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .topic-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background-color: var(--color-bg-warm);
            color: var(--color-primary);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 999px;
            border: 1px solid var(--color-border);
            transition: background-color var(--transition-base), border-color var(--transition-base), color var(--transition-base);
        }
        .topic-tag:hover {
            background-color: var(--color-primary);
            color: var(--color-text-white);
            border-color: var(--color-primary);
        }
        .tool-banner {
            background-image: linear-gradient(rgba(18, 59, 47, 0.88), rgba(18, 59, 47, 0.88)), url('/assets/images/88fdc9f84623aac6.webp');
            background-size: cover;
            background-position: center;
            border-radius: var(--radius-card);
            padding: 40px 36px;
            color: var(--color-text-white);
            position: relative;
            overflow: hidden;
        }
        .tool-banner h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--color-text-white);
            margin-bottom: 10px;
            font-family: var(--font-heading);
        }
        .tool-banner p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.78);
            max-width: 620px;
            margin-bottom: 20px;
            line-height: 1.7;
        }
        .tool-banner .btn {
            background-color: var(--color-accent);
            color: var(--color-primary-deeper);
        }
        .tool-banner .btn:hover {
            background-color: var(--color-accent-deep);
            color: var(--color-primary-deeper);
        }
        .cta-section {
            background-color: var(--color-primary);
            border-radius: var(--radius-card);
            padding: 48px 40px;
            color: var(--color-text-white);
            box-shadow: 0 8px 24px rgba(15, 61, 46, 0.18);
        }
        .cta-section h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--color-text-white);
            margin-bottom: 12px;
            font-family: var(--font-heading);
        }
        .cta-section p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.78);
            max-width: 600px;
            margin-bottom: 24px;
            line-height: 1.7;
        }
        .cta-section .form-group {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
        }
        .cta-section input[type="email"] {
            flex: 1;
            min-width: 240px;
            border: 1px solid rgba(255, 255, 255, 0.24);
            border-radius: var(--radius-input);
            padding: 12px 16px;
            font-size: 15px;
            color: var(--color-text-dark);
            background-color: #FFFFFF;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }
        .cta-section input[type="email"]:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(198, 244, 50, 0.2);
            outline: none;
        }
        .faq-panel {
            background-color: #FFFFFF;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 28px;
            box-shadow: var(--shadow-card);
        }
        .faq-panel h2 {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-text-dark);
            margin-bottom: 16px;
            font-family: var(--font-heading);
        }
        .faq-item {
            border-bottom: 1px solid var(--color-border);
            padding: 16px 0;
        }
        .faq-item:last-child {
            border-bottom: none;
        }
        .faq-question {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-dark);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 4px 0;
        }
        .faq-question::after {
            content: '+';
            font-size: 20px;
            font-weight: 400;
            color: var(--color-primary);
            transition: transform var(--transition-base);
        }
        .faq-item.open .faq-question::after {
            content: '−';
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 300ms ease, padding 300ms ease;
            color: var(--color-text-gray);
            font-size: 15px;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-top: 10px;
        }
        .risk-notice {
            background-color: var(--color-bg-light);
            border-left: 4px solid var(--color-warning);
            border-radius: 8px;
            padding: 18px 22px;
            font-size: 14px;
            color: var(--color-text-gray);
            line-height: 1.7;
        }
        .risk-notice strong {
            color: var(--color-primary);
        }
        .guide-list-section {
            padding: 0 0 48px;
        }
        .site-footer {
            background-color: var(--color-primary-deeper);
            color: rgba(255, 255, 255, 0.78);
            padding: 56px 0 28px;
            margin-top: 48px;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            margin-bottom: 36px;
        }
        .site-footer h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-text-white);
            margin-bottom: 14px;
            font-family: var(--font-heading);
        }
        .site-footer .footer-col p {
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 0;
        }
        .site-footer .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.72);
            padding: 4px 0;
            transition: color var(--transition-base);
        }
        .site-footer .footer-col a:hover {
            color: var(--color-accent);
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
        }
        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 13px;
        }
        .site-footer .footer-bottom a:hover {
            color: var(--color-accent);
        }
        .site-footer .brand-name {
            font-weight: 700;
            color: var(--color-text-white);
        }
        @media (max-width: 1024px) {
            .main-nav {
                display: none;
            }
            .nav-toggle {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }
            .mobile-nav {
                display: flex;
            }
            .mobile-nav.hidden {
                display: none;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr) !important;
                gap: 28px !important;
            }
            .category-hero h1 {
                font-size: 28px;
            }
        }
        @media (max-width: 768px) {
            :root {
                --section-pad-desktop: 40px 0;
                --section-pad-mobile: 32px 0;
            }
            .category-hero h1 {
                font-size: 24px;
            }
            .category-hero .hero-desc {
                font-size: 15px;
            }
            .filter-toolbar {
                padding: 16px;
            }
            .filter-toolbar .filter-row {
                gap: 8px;
            }
            .filter-toolbar select,
            .filter-toolbar input[type="text"] {
                min-width: 120px;
                padding: 8px 10px;
                font-size: 13px;
            }
            .guide-card .guide-card-body {
                padding: 18px 20px;
            }
            .guide-card .guide-title {
                font-size: 18px;
            }
            .cta-section {
                padding: 32px 24px;
            }
            .cta-section .form-group {
                flex-direction: column;
                align-items: stretch;
            }
            .cta-section input[type="email"] {
                min-width: auto;
                width: 100%;
            }
            .tool-banner {
                padding: 28px 24px;
            }
            .topic-panel {
                padding: 20px;
            }
            .faq-panel {
                padding: 20px;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr !important;
                gap: 24px !important;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .category-hero h1 {
                font-size: 22px;
            }
            .filter-toolbar .filter-row {
                flex-direction: column;
                align-items: stretch;
            }
            .filter-toolbar select,
            .filter-toolbar input[type="text"] {
                width: 100%;
                min-width: auto;
            }
            .guide-card .guide-card-body {
                padding: 16px;
            }
            .guide-card .guide-title {
                font-size: 17px;
            }
            .guide-card .guide-excerpt {
                font-size: 14px;
            }
        }

/* roulang page: category4 */
:root {
      --color-primary: #123B2F;
      --color-primary-dark: #0F3D2E;
      --color-primary-deeper: #092B20;
      --color-bg-warm: #F5F7F2;
      --color-bg-light: #E9EDE4;
      --color-accent: #C6F432;
      --color-accent-deep: #B6E32E;
      --color-warning: #F2A104;
      --color-danger: #D94F30;
      --color-text-dark: #1A1D1B;
      --color-text-gray: #5A625D;
      --color-text-white: #FFFFFF;
      --color-card-bg: #FFFFFF;
      --color-border: #E1E7DE;
      --color-border-input: #D9E0D6;
      --radius-card: 14px;
      --radius-btn: 999px;
      --radius-input: 10px;
      --shadow-card: 0 2px 12px rgba(15, 61, 46, 0.06);
      --shadow-card-hover: 0 12px 28px rgba(15, 61, 46, 0.12);
      --shadow-nav: 0 1px 0 rgba(15, 61, 46, 0.08);
      --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
      --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
      --font-numeric: 'Roboto Condensed', 'DIN Alternate', 'Oswald', sans-serif;
      --transition-base: 200ms ease;
      --section-pad-desktop: 64px 0;
      --section-pad-mobile: 40px 0;
      --container-max: 1200px;
      --nav-height: 72px;
    }

    html {
      scroll-behavior: smooth;
      -webkit-text-size-adjust: 100%;
    }
    body {
      font-family: var(--font-body);
      font-size: 16px;
      line-height: 1.7;
      color: var(--color-text-dark);
      background-color: var(--color-bg-warm);
      margin: 0;
      padding: 0;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
      border: 0;
    }
    a {
      color: var(--color-primary);
      text-decoration: none;
      transition: color var(--transition-base), background-color var(--transition-base), border-color var(--transition-base), opacity var(--transition-base);
    }
    a:hover {
      color: var(--color-primary-dark);
    }
    a:focus-visible,
    button:focus-visible,
    input:focus-visible,
    textarea:focus-visible {
      outline: 2px solid var(--color-accent);
      outline-offset: 2px;
      border-radius: 4px;
    }
    .text-numeric {
      font-family: var(--font-numeric);
      letter-spacing: 0.02em;
    }
    .text-gray {
      color: var(--color-text-gray);
    }
    .text-primary {
      color: var(--color-primary);
    }
    .text-accent {
      color: var(--color-accent);
    }
    .text-warning {
      color: var(--color-warning);
    }
    .text-danger {
      color: var(--color-danger);
    }
    .container-main {
      max-width: var(--container-max);
      margin: 0 auto;
      padding-left: 20px;
      padding-right: 20px;
    }
    .section {
      padding: var(--section-pad-desktop);
    }
    .section-sm {
      padding: 40px 0;
    }
    .section-bg-warm {
      background-color: var(--color-bg-warm);
    }
    .section-bg-light {
      background-color: var(--color-bg-light);
    }
    .section-bg-dark {
      background-color: var(--color-primary);
      color: var(--color-text-white);
    }
    .section-bg-dark h1,
    .section-bg-dark h2,
    .section-bg-dark h3 {
      color: var(--color-text-white);
    }
    .section-bg-dark .text-gray {
      color: rgba(255, 255, 255, 0.7);
    }
    .section-header {
      margin-bottom: 2.5rem;
    }
    .section-header h2 {
      margin-bottom: 0.75rem;
    }
    .section-header p {
      margin-bottom: 0;
      max-width: 680px;
      color: var(--color-text-gray);
    }

    /* Header / Navigation */
    .site-header {
      background-color: rgba(255, 255, 255, 0.97);
      backdrop-filter: blur(8px);
      border-bottom: 1px solid var(--color-border);
      position: sticky;
      top: 0;
      z-index: 999;
      width: 100%;
      height: var(--nav-height);
      display: flex;
      align-items: center;
      box-shadow: var(--shadow-nav);
    }
    .site-header .container-main {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
    }
    .brand-logo {
      font-family: var(--font-heading);
      font-weight: 700;
      font-size: 22px;
      color: var(--color-primary);
      display: flex;
      align-items: center;
      gap: 10px;
      line-height: 1;
      white-space: nowrap;
      text-decoration: none;
    }
    .brand-logo .logo-dot {
      display: inline-block;
      width: 12px;
      height: 12px;
      background-color: var(--color-accent);
      border-radius: 50%;
      flex-shrink: 0;
    }
    .brand-logo:hover {
      color: var(--color-primary-dark);
    }
    .main-nav {
      display: flex;
      align-items: center;
      gap: 28px;
      margin-left: auto;
    }
    .main-nav a {
      font-size: 15px;
      color: var(--color-text-dark);
      padding: 8px 0;
      position: relative;
      white-space: nowrap;
      transition: color var(--transition-base);
    }
    .main-nav a::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: 0;
      width: 100%;
      height: 2px;
      background-color: var(--color-primary);
      transform: scaleX(0);
      transform-origin: left;
      transition: transform var(--transition-base);
    }
    .main-nav a:hover,
    .main-nav a:focus {
      color: var(--color-primary);
    }
    .main-nav a:hover::after,
    .main-nav a:focus::after {
      transform: scaleX(1);
    }
    .main-nav a.active {
      color: var(--color-primary);
      font-weight: 600;
    }
    .main-nav a.active::after {
      transform: scaleX(1);
      background-color: var(--color-accent-deep);
    }
    .nav-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
      flex-direction: column;
      gap: 5px;
      align-items: center;
      justify-content: center;
      border-radius: 6px;
      transition: background-color var(--transition-base);
    }
    .nav-toggle span {
      display: block;
      width: 22px;
      height: 2px;
      background-color: var(--color-primary);
      border-radius: 1px;
      transition: transform var(--transition-base), opacity var(--transition-base);
    }
    .nav-toggle:hover {
      background-color: var(--color-bg-light);
    }
    .nav-toggle[aria-expanded="true"] span:nth-child(1) {
      transform: translateY(7px) rotate(45deg);
    }
    .nav-toggle[aria-expanded="true"] span:nth-child(2) {
      opacity: 0;
    }
    .nav-toggle[aria-expanded="true"] span:nth-child(3) {
      transform: translateY(-7px) rotate(-45deg);
    }

    /* Breadcrumb */
    .breadcrumb {
      font-size: 14px;
      color: var(--color-text-gray);
      margin-bottom: 0.75rem;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 6px;
    }
    .breadcrumb a {
      color: var(--color-text-gray);
      text-decoration: none;
    }
    .breadcrumb a:hover {
      color: var(--color-primary);
      text-decoration: underline;
    }
    .breadcrumb .sep {
      color: var(--color-border);
    }
    .breadcrumb .current {
      color: var(--color-primary);
      font-weight: 600;
    }

    /* Category Header */
    .category-header {
      padding-top: 48px;
      padding-bottom: 32px;
    }
    .category-header h1 {
      font-size: 32px;
      font-weight: 700;
      line-height: 1.35;
      margin-bottom: 12px;
      color: var(--color-primary);
    }
    .category-header .category-desc {
      font-size: 17px;
      color: var(--color-text-gray);
      max-width: 800px;
      line-height: 1.8;
    }

    /* Toolbar */
    .toolbar {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 12px;
      background: var(--color-card-bg);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-card);
      padding: 16px 20px;
      box-shadow: var(--shadow-card);
    }
    .toolbar .toolbar-label {
      font-size: 14px;
      color: var(--color-text-gray);
      font-weight: 600;
      margin-right: 4px;
    }
    .toolbar .filter-group,
    .toolbar .sort-group {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      align-items: center;
    }
    .toolbar .filter-btn,
    .toolbar .sort-btn {
      background: transparent;
      border: 1px solid var(--color-border);
      color: var(--color-text-dark);
      padding: 6px 14px;
      border-radius: 999px;
      font-size: 14px;
      cursor: pointer;
      transition: all var(--transition-base);
      white-space: nowrap;
    }
    .toolbar .filter-btn:hover,
    .toolbar .sort-btn:hover {
      border-color: var(--color-primary);
      color: var(--color-primary);
      background: var(--color-bg-light);
    }
    .toolbar .filter-btn.active,
    .toolbar .sort-btn.active {
      background: var(--color-primary);
      border-color: var(--color-primary);
      color: #fff;
    }

    /* Card Grid */
    .card-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      margin-top: 1.5rem;
    }
    .card {
      background: var(--color-card-bg);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-card);
      overflow: hidden;
      transition: transform var(--transition-base), box-shadow var(--transition-base);
      display: flex;
      flex-direction: column;
    }
    .card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-card-hover);
    }
    .card .card-image {
      position: relative;
      height: 190px;
      overflow: hidden;
      background-color: var(--color-bg-light);
    }
    .card .card-image img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform var(--transition-base);
    }
    .card:hover .card-image img {
      transform: scale(1.03);
    }
    .card .card-body {
      padding: 22px 20px 20px;
      display: flex;
      flex-direction: column;
      flex: 1;
    }
    .card .card-date {
      font-size: 13px;
      color: var(--color-text-gray);
      margin-bottom: 8px;
      font-family: var(--font-numeric);
      letter-spacing: 0.02em;
    }
    .card .card-title {
      font-size: 18px;
      font-weight: 700;
      line-height: 1.4;
      margin-bottom: 10px;
      color: var(--color-text-dark);
    }
    .card .card-title a {
      color: inherit;
      text-decoration: none;
    }
    .card .card-title a:hover {
      color: var(--color-primary);
    }
    .card .card-summary {
      font-size: 15px;
      color: var(--color-text-gray);
      line-height: 1.7;
      margin-bottom: 16px;
      flex: 1;
    }
    .card .card-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-bottom: 16px;
    }
    .card .card-tags .tag {
      background: var(--color-bg-light);
      color: var(--color-primary);
      font-size: 12px;
      padding: 3px 10px;
      border-radius: 20px;
      font-weight: 500;
    }
    .card .card-more {
      font-size: 14px;
      color: var(--color-primary);
      font-weight: 600;
      transition: color var(--transition-base);
      align-self: flex-start;
    }
    .card .card-more:hover {
      color: var(--color-accent-deep);
    }

    /* Tags section */
    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 1rem;
    }
    .tag-cloud .tag {
      display: inline-block;
      padding: 8px 20px;
      background: var(--color-card-bg);
      border: 1px solid var(--color-border);
      border-radius: 999px;
      color: var(--color-text-dark);
      font-size: 15px;
      transition: all var(--transition-base);
    }
    .tag-cloud .tag:hover {
      background: var(--color-primary);
      color: #fff;
      border-color: var(--color-primary);
    }

    /* Tools banner */
    .tools-banner {
      background: var(--color-primary);
      color: #fff;
      border-radius: var(--radius-card);
      padding: 32px 28px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
    }
    .tools-banner h2 {
      color: #fff;
      margin-bottom: 8px;
      font-size: 24px;
    }
    .tools-banner p {
      color: rgba(255,255,255,0.85);
      margin: 0;
      font-size: 15px;
      max-width: 600px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 12px 22px;
      border-radius: var(--radius-btn);
      font-size: 15px;
      font-weight: 600;
      cursor: pointer;
      transition: all var(--transition-base);
      text-decoration: none;
      border: 2px solid transparent;
    }
    .btn-primary {
      background: var(--color-primary);
      color: #fff;
      border-color: var(--color-primary);
    }
    .btn-primary:hover {
      background: var(--color-primary-dark);
      border-color: var(--color-primary-dark);
      color: #fff;
    }
    .btn-secondary {
      background: transparent;
      color: var(--color-primary);
      border-color: var(--color-primary);
    }
    .btn-secondary:hover {
      background: var(--color-primary);
      color: #fff;
      border-color: var(--color-primary);
    }
    .btn-accent {
      background: var(--color-accent);
      color: var(--color-primary-deeper);
      border-color: var(--color-accent);
    }
    .btn-accent:hover {
      background: var(--color-accent-deep);
      border-color: var(--color-accent-deep);
      color: var(--color-primary-deeper);
    }
    .btn-light {
      background: #fff;
      color: var(--color-primary);
      border-color: #fff;
    }
    .btn-light:hover {
      background: var(--color-bg-light);
      border-color: var(--color-bg-light);
      color: var(--color-primary);
    }

    /* CTA */
    .cta-box {
      background: var(--color-card-bg);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-card);
      padding: 32px 28px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }
    .cta-box h2 {
      margin-bottom: 6px;
      font-size: 24px;
    }
    .cta-box p {
      color: var(--color-text-gray);
      margin: 0;
      font-size: 15px;
      max-width: 500px;
    }
    .subscribe-form {
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
      align-items: center;
    }
    .subscribe-form input[type="email"] {
      padding: 12px 18px;
      border: 1px solid var(--color-border-input);
      border-radius: var(--radius-input);
      font-size: 15px;
      min-width: 240px;
      background: #fff;
      transition: border-color var(--transition-base);
    }
    .subscribe-form input[type="email"]:focus {
      border-color: var(--color-accent);
      outline: none;
    }
    .subscribe-form .btn {
      white-space: nowrap;
    }

    /* FAQ */
    .faq-list {
      margin-top: 1rem;
    }
    .faq-item {
      background: var(--color-card-bg);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-card);
      padding: 20px 22px;
      margin-bottom: 12px;
      transition: box-shadow var(--transition-base);
    }
    .faq-item:hover {
      box-shadow: var(--shadow-card);
    }
    .faq-item h3 {
      font-size: 17px;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--color-text-dark);
    }
    .faq-item p {
      color: var(--color-text-gray);
      margin: 0;
      font-size: 15px;
      line-height: 1.7;
    }

    /* Risk banner */
    .risk-banner {
      text-align: center;
      padding: 20px 18px;
      border-radius: 0;
    }
    .risk-banner p {
      margin: 0;
      color: rgba(255,255,255,0.9);
      font-size: 15px;
    }

    /* Footer */
    .site-footer {
      background: #0B2920;
      color: rgba(255,255,255,0.85);
      padding: 48px 0 0;
      margin-top: 0;
    }
    .site-footer .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 32px;
    }
    .site-footer .footer-col h4 {
      color: #fff;
      font-size: 16px;
      margin-bottom: 16px;
      font-weight: 600;
    }
    .site-footer .footer-col p {
      font-size: 14px;
      line-height: 1.7;
      color: rgba(255,255,255,0.7);
      max-width: 300px;
    }
    .site-footer .footer-col a {
      display: block;
      color: rgba(255,255,255,0.7);
      font-size: 14px;
      margin-bottom: 10px;
      text-decoration: none;
      transition: color var(--transition-base);
    }
    .site-footer .footer-col a:hover {
      color: var(--color-accent);
    }
    .site-footer .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.12);
      padding: 20px 0;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      gap: 12px;
      font-size: 13px;
      color: rgba(255,255,255,0.6);
    }
    .site-footer .footer-bottom a {
      color: rgba(255,255,255,0.7);
      text-decoration: none;
    }
    .site-footer .footer-bottom a:hover {
      color: var(--color-accent);
    }
    .brand-name {
      font-weight: 600;
      color: #fff;
    }

    /* Responsive */
    @media (max-width: 1024px) {
      :root {
        --nav-height: 64px;
      }
      .main-nav {
        gap: 18px;
      }
      .card-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .site-footer .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 28px;
      }
    }
    @media (max-width: 640px) {
      :root {
        --section-pad-desktop: 40px 0;
        --section-pad-mobile: 32px 0;
      }
      .container-main {
        padding-left: 16px;
        padding-right: 16px;
      }
      .nav-toggle {
        display: flex;
      }
      .main-nav {
        display: none;
        position: absolute;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background: #fff;
        border-bottom: 1px solid var(--color-border);
        flex-direction: column;
        align-items: flex-start;
        padding: 16px 20px;
        gap: 0;
        box-shadow: 0 8px 20px rgba(0,0,0,0.06);
      }
      .main-nav.open {
        display: flex;
      }
      .main-nav a {
        width: 100%;
        padding: 12px 0;
        border-bottom: 1px solid var(--color-bg-light);
      }
      .main-nav a:last-child {
        border-bottom: none;
      }
      .main-nav a::after {
        display: none;
      }
      .main-nav a.active {
        color: var(--color-primary);
        background: var(--color-bg-light);
        padding-left: 8px;
        border-radius: 6px;
      }
      .category-header h1 {
        font-size: 26px;
      }
      .card-grid {
        grid-template-columns: 1fr;
      }
      .toolbar {
        padding: 14px 16px;
      }
      .tools-banner {
        padding: 24px 20px;
        flex-direction: column;
        align-items: flex-start;
      }
      .cta-box {
        padding: 24px 20px;
        flex-direction: column;
        align-items: flex-start;
      }
      .subscribe-form input[type="email"] {
        min-width: 100%;
      }
      .site-footer .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
      }
      .site-footer .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
    }

/* roulang page: category6 */
:root {
            --color-primary: #123B2F;
            --color-primary-dark: #0F3D2E;
            --color-primary-deeper: #092B20;
            --color-bg-warm: #F5F7F2;
            --color-bg-light: #E9EDE4;
            --color-accent: #C6F432;
            --color-accent-deep: #B6E32E;
            --color-warning: #F2A104;
            --color-danger: #D94F30;
            --color-text-dark: #1A1D1B;
            --color-text-gray: #5A625D;
            --color-text-white: #FFFFFF;
            --color-card-bg: #FFFFFF;
            --color-border: #E1E7DE;
            --color-border-input: #D9E0D6;
            --radius-card: 14px;
            --radius-btn: 999px;
            --radius-input: 10px;
            --shadow-card: 0 2px 12px rgba(15, 61, 46, 0.06);
            --shadow-card-hover: 0 12px 28px rgba(15, 61, 46, 0.12);
            --shadow-nav: 0 1px 0 rgba(15, 61, 46, 0.08);
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-numeric: 'Roboto Condensed', 'DIN Alternate', 'Oswald', sans-serif;
            --transition-base: 200ms ease;
            --section-pad-desktop: 64px 0;
            --section-pad-mobile: 40px 0;
            --container-max: 1200px;
            --nav-height: 72px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text-dark);
            background-color: var(--color-bg-warm);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition-base), background-color var(--transition-base), border-color var(--transition-base), opacity var(--transition-base);
        }

        a:hover {
            color: var(--color-primary-dark);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
            border-radius: 4px;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-heading);
            color: var(--color-text-dark);
            line-height: 1.3;
            margin-top: 0;
        }

        h1 {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 1rem;
        }

        h2 {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 0.75rem;
        }

        h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 0.5rem;
        }

        p {
            margin-bottom: 1rem;
        }

        .text-numeric {
            font-family: var(--font-numeric);
            letter-spacing: 0.02em;
        }

        .text-gray {
            color: var(--color-text-gray);
        }

        .text-primary {
            color: var(--color-primary);
        }

        .text-accent {
            color: var(--color-accent);
        }

        .text-warning {
            color: var(--color-warning);
        }

        .text-danger {
            color: var(--color-danger);
        }

        .container-main {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        .container-wide {
            max-width: 1400px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        .section {
            padding: var(--section-pad-desktop);
        }

        .section-sm {
            padding: 40px 0;
        }

        .section-bg-warm {
            background-color: var(--color-bg-warm);
        }

        .section-bg-light {
            background-color: var(--color-bg-light);
        }

        .section-bg-dark {
            background-color: var(--color-primary);
            color: var(--color-text-white);
        }

        .section-bg-dark h1,
        .section-bg-dark h2,
        .section-bg-dark h3 {
            color: var(--color-text-white);
        }

        .section-bg-dark .text-gray {
            color: rgba(255, 255, 255, 0.7);
        }

        .section-bg-deeper {
            background-color: var(--color-primary-deeper);
            color: var(--color-text-white);
        }

        .section-header {
            margin-bottom: 2rem;
        }

        .section-header h2 {
            margin-bottom: 0.5rem;
        }

        .section-header p {
            margin-bottom: 0;
            max-width: 680px;
            color: var(--color-text-gray);
        }

        /* Header / Navigation */
        .site-header {
            background-color: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--color-border);
            position: sticky;
            top: 0;
            z-index: 999;
            width: 100%;
            min-height: var(--nav-height);
            display: flex;
            align-items: center;
        }

        .site-header .container-main {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            flex-wrap: wrap;
        }

        .brand-logo {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 22px;
            color: var(--color-primary);
            display: flex;
            align-items: center;
            gap: 10px;
            line-height: 1;
            white-space: nowrap;
            padding: 12px 0;
        }

        .brand-logo a {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: inherit;
            text-decoration: none;
        }

        .brand-logo .logo-dot {
            display: inline-block;
            width: 12px;
            height: 12px;
            background-color: var(--color-accent);
            border-radius: 50%;
            flex-shrink: 0;
        }

        .brand-logo a:hover {
            color: var(--color-primary-dark);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
            flex-wrap: wrap;
        }

        .main-nav a {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-gray);
            padding: 16px 0;
            position: relative;
            white-space: nowrap;
            transition: color var(--transition-base);
        }

        .main-nav a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 8px;
            width: 0;
            height: 2px;
            background-color: var(--color-primary);
            transition: width var(--transition-base);
        }

        .main-nav a:hover {
            color: var(--color-primary);
        }

        .main-nav a:hover::after {
            width: 100%;
        }

        .main-nav a.active {
            color: var(--color-primary);
            font-weight: 600;
        }

        .main-nav a.active::after {
            width: 100%;
            background-color: var(--color-primary);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            margin-left: auto;
        }

        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background-color: var(--color-primary);
            border-radius: 2px;
            transition: all var(--transition-base);
        }

        .nav-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* Breadcrumb */
        .breadcrumb-bar {
            padding: 18px 0;
            background-color: transparent;
            border-bottom: 1px solid var(--color-border);
        }

        .breadcrumb-bar .breadcrumb-list {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 14px;
        }

        .breadcrumb-bar .breadcrumb-list li {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .breadcrumb-bar .breadcrumb-list li:not(:last-child)::after {
            content: '/';
            color: var(--color-text-gray);
            font-size: 13px;
            margin-left: 4px;
        }

        .breadcrumb-bar .breadcrumb-list a {
            color: var(--color-text-gray);
            transition: color var(--transition-base);
        }

        .breadcrumb-bar .breadcrumb-list a:hover {
            color: var(--color-primary);
        }

        .breadcrumb-bar .breadcrumb-list .current {
            color: var(--color-primary);
            font-weight: 600;
        }

        /* Category Header */
        .category-header {
            padding: 36px 0 28px;
            background-color: var(--color-bg-warm);
        }

        .category-header h1 {
            font-size: 34px;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .category-header .desc {
            max-width: 760px;
            font-size: 16px;
            color: var(--color-text-gray);
            line-height: 1.8;
            margin-bottom: 0;
        }

        .category-header .meta-chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--color-bg-light);
            border: 1px solid var(--color-border);
            border-radius: 999px;
            padding: 6px 16px;
            font-size: 13px;
            color: var(--color-text-gray);
            margin-top: 12px;
        }

        .category-header .meta-chip .dot {
            width: 6px;
            height: 6px;
            background-color: var(--color-accent-deep);
            border-radius: 50%;
        }

        /* Filter Bar */
        .filter-bar {
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 16px 20px;
            margin-bottom: 32px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
            box-shadow: var(--shadow-card);
        }

        .filter-bar .filter-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-gray);
            margin-right: 4px;
            white-space: nowrap;
        }

        .filter-bar .filter-group {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            align-items: center;
        }

        .filter-bar .filter-btn {
            font-size: 13px;
            padding: 7px 16px;
            border-radius: 999px;
            border: 1px solid var(--color-border);
            background: var(--color-bg-warm);
            color: var(--color-text-gray);
            cursor: pointer;
            transition: all var(--transition-base);
            white-space: nowrap;
            font-family: var(--font-body);
        }

        .filter-bar .filter-btn:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background-color: #f0f5ee;
        }

        .filter-bar .filter-btn.active {
            background-color: var(--color-primary);
            color: var(--color-text-white);
            border-color: var(--color-primary);
            font-weight: 500;
        }

        .filter-bar .filter-select {
            font-size: 14px;
            padding: 7px 14px;
            border-radius: var(--radius-input);
            border: 1px solid var(--color-border-input);
            background: var(--color-card-bg);
            color: var(--color-text-dark);
            cursor: pointer;
            font-family: var(--font-body);
        }

        .filter-bar .filter-select:focus {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
            border-color: var(--color-primary);
        }

        /* Expert View List */
        .expert-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .expert-card {
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 24px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
            position: relative;
        }

        .expert-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
            border-color: #c9d4c4;
        }

        .expert-card .card-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            flex-wrap: wrap;
        }

        .expert-card .date-tag {
            font-family: var(--font-numeric);
            font-size: 13px;
            color: var(--color-text-gray);
            letter-spacing: 0.04em;
        }

        .expert-card .tag-row {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }

        .expert-card .tag {
            display: inline-block;
            font-size: 12px;
            padding: 4px 12px;
            border-radius: 999px;
            background-color: var(--color-bg-light);
            color: var(--color-primary);
            border: 1px solid var(--color-border);
            font-weight: 500;
            white-space: nowrap;
        }

        .expert-card .tag.highlight {
            background-color: var(--color-primary);
            color: var(--color-text-white);
            border-color: var(--color-primary);
        }

        .expert-card h3 {
            font-size: 18px;
            margin-bottom: 0;
            line-height: 1.45;
        }

        .expert-card h3 a {
            color: var(--color-text-dark);
            transition: color var(--transition-base);
        }

        .expert-card h3 a:hover {
            color: var(--color-primary);
        }

        .expert-card .summary {
            font-size: 14px;
            color: var(--color-text-gray);
            line-height: 1.75;
            margin-bottom: 0;
            flex-grow: 1;
        }

        .expert-card .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            flex-wrap: wrap;
            border-top: 1px solid var(--color-border);
            padding-top: 12px;
        }

        .expert-card .read-more {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition-base), color var(--transition-base);
            white-space: nowrap;
        }

        .expert-card .read-more::after {
            content: '→';
            transition: transform var(--transition-base);
        }

        .expert-card .read-more:hover {
            color: var(--color-primary-dark);
            gap: 10px;
        }

        .expert-card .read-more:hover::after {
            transform: translateX(3px);
        }

        /* Image card variant */
        .expert-card.with-image {
            overflow: hidden;
            padding: 0;
        }

        .expert-card.with-image .card-image {
            width: 100%;
            aspect-ratio: 16/9;
            overflow: hidden;
            background-color: var(--color-bg-light);
            position: relative;
        }

        .expert-card.with-image .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 400ms ease;
        }

        .expert-card.with-image:hover .card-image img {
            transform: scale(1.03);
        }

        .expert-card.with-image .card-body {
            padding: 20px 24px 24px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            flex-grow: 1;
        }

        /* Tags / Topic Section */
        .topic-tags-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 10px;
        }

        .topic-tag-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            border-radius: 999px;
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border);
            color: var(--color-text-dark);
            font-size: 14px;
            font-weight: 500;
            transition: all var(--transition-base);
        }

        .topic-tag-link .count {
            font-family: var(--font-numeric);
            font-size: 12px;
            color: var(--color-text-gray);
            background: var(--color-bg-light);
            padding: 2px 8px;
            border-radius: 999px;
        }

        .topic-tag-link:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background-color: #f0f5ee;
            transform: translateY(-2px);
            box-shadow: var(--shadow-card);
        }

        /* Data Tools Banner */
        .tools-banner {
            background-color: var(--color-primary);
            color: var(--color-text-white);
            border-radius: var(--radius-card);
            padding: 36px 40px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            position: relative;
            overflow: hidden;
        }

        .tools-banner::before {
            content: '';
            position: absolute;
            right: -40px;
            top: -40px;
            width: 160px;
            height: 160px;
            background-color: var(--color-accent);
            opacity: 0.1;
            border-radius: 50%;
        }

        .tools-banner h3 {
            color: var(--color-text-white);
            margin-bottom: 6px;
            font-size: 22px;
        }

        .tools-banner p {
            margin-bottom: 0;
            color: rgba(255, 255, 255, 0.75);
            font-size: 15px;
            max-width: 520px;
        }

        .tools-banner .banner-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            background-color: var(--color-accent);
            color: var(--color-primary-deeper);
            font-weight: 600;
            font-size: 15px;
            border: none;
            cursor: pointer;
            transition: all var(--transition-base);
            white-space: nowrap;
            z-index: 1;
        }

        .tools-banner .banner-cta:hover {
            background-color: var(--color-accent-deep);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
        }

        /* CTA Section */
        .cta-section {
            background-color: var(--color-primary-deeper);
            color: var(--color-text-white);
            border-radius: var(--radius-card);
            padding: 48px 40px;
            position: relative;
            overflow: hidden;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            right: 0;
            bottom: 0;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(198, 244, 50, 0.15) 0%, transparent 70%);
            border-radius: 50%;
        }

        .cta-section h2 {
            color: var(--color-text-white);
            margin-bottom: 8px;
            font-size: 26px;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 24px;
            font-size: 15px;
            max-width: 560px;
        }

        .cta-form {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            max-width: 520px;
            position: relative;
            z-index: 1;
        }

        .cta-form input[type="email"] {
            flex: 1;
            min-width: 220px;
            padding: 13px 20px;
            border-radius: var(--radius-input);
            border: 1px solid rgba(255, 255, 255, 0.2);
            background-color: rgba(255, 255, 255, 0.92);
            font-size: 15px;
            color: var(--color-text-dark);
            font-family: var(--font-body);
            transition: all var(--transition-base);
        }

        .cta-form input[type="email"]:focus {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
            border-color: var(--color-accent);
            background-color: #ffffff;
        }

        .cta-form button {
            padding: 13px 28px;
            border-radius: var(--radius-btn);
            background-color: var(--color-accent);
            color: var(--color-primary-deeper);
            font-weight: 600;
            font-size: 15px;
            border: none;
            cursor: pointer;
            font-family: var(--font-body);
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .cta-form button:hover {
            background-color: var(--color-accent-deep);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25);
        }

        .cta-form .privacy-note {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.5);
            flex-basis: 100%;
            margin-top: 4px;
        }

        /* FAQ */
        .faq-list {
            max-width: 760px;
        }

        .faq-item {
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }

        .faq-item:hover {
            border-color: #c9d4c4;
            box-shadow: var(--shadow-card);
        }

        .faq-question {
            width: 100%;
            padding: 18px 24px;
            background: none;
            border: none;
            text-align: left;
            font-family: var(--font-body);
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-dark);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            transition: color var(--transition-base);
        }

        .faq-question:hover {
            color: var(--color-primary);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background-color: var(--color-bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--color-primary);
            transition: transform var(--transition-base), background-color var(--transition-base);
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
            background-color: var(--color-primary);
            color: var(--color-text-white);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 300ms ease, padding 300ms ease;
            padding: 0 24px;
        }

        .faq-item.open .faq-answer {
            max-height: 200px;
            padding: 0 24px 20px;
        }

        .faq-answer p {
            font-size: 15px;
            color: var(--color-text-gray);
            line-height: 1.75;
            margin-bottom: 0;
            padding-top: 4px;
            border-top: 1px solid var(--color-border);
        }

        /* Risk Notice */
        .risk-notice {
            background-color: #fdf6ec;
            border-left: 4px solid var(--color-warning);
            border-radius: var(--radius-card);
            padding: 24px 28px;
            display: flex;
            align-items: flex-start;
            gap: 14px;
        }

        .risk-notice .risk-icon {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: rgba(242, 161, 4, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
        }

        .risk-notice h3 {
            font-size: 17px;
            margin-bottom: 4px;
            color: #7a5a0a;
        }

        .risk-notice p {
            font-size: 14px;
            color: var(--color-text-gray);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* Footer */
        .site-footer {
            background-color: var(--color-primary-deeper);
            color: rgba(255, 255, 255, 0.8);
            padding: 48px 0 24px;
            margin-top: 48px;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .site-footer .footer-col h4 {
            color: var(--color-text-white);
            font-size: 17px;
            margin-bottom: 16px;
            font-weight: 600;
        }

        .site-footer .footer-col p {
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 0;
            color: rgba(255, 255, 255, 0.65);
            max-width: 300px;
        }

        .site-footer .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 10px;
            transition: color var(--transition-base), transform var(--transition-base);
        }

        .site-footer .footer-col a:hover {
            color: var(--color-accent);
            transform: translateX(3px);
        }

        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }

        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition-base);
        }

        .site-footer .footer-bottom a:hover {
            color: var(--color-accent);
        }

        .site-footer .brand-name {
            color: var(--color-text-white);
            font-weight: 600;
        }

        /* Responsive Design */
        @media (max-width: 1024px) {
            .site-header {
                min-height: auto;
                padding: 8px 0;
            }

            .site-header .container-main {
                flex-wrap: nowrap;
            }

            .nav-toggle {
                display: flex;
            }

            .main-nav {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                flex-direction: column;
                align-items: flex-start;
                gap: 0;
                background-color: #ffffff;
                border-bottom: 1px solid var(--color-border);
                padding: 12px 20px;
                box-shadow: 0 12px 24px rgba(15, 61, 46, 0.08);
                z-index: 998;
            }

            .main-nav.open {
                display: flex;
            }

            .main-nav a {
                width: 100%;
                padding: 14px 0;
                border-bottom: 1px solid var(--color-border);
                font-size: 16px;
            }

            .main-nav a:last-child {
                border-bottom: none;
            }

            .main-nav a::after {
                display: none;
            }

            .main-nav a.active {
                color: var(--color-primary);
                font-weight: 600;
            }

            .expert-list {
                grid-template-columns: 1fr;
            }

            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }

            .category-header h1 {
                font-size: 28px;
            }

            .tools-banner {
                padding: 28px 24px;
                flex-direction: column;
                align-items: flex-start;
            }

            .cta-section {
                padding: 36px 24px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-pad-desktop: 48px 0;
            }

            .section {
                padding: var(--section-pad-mobile);
            }

            .category-header {
                padding: 24px 0 20px;
            }

            .category-header h1 {
                font-size: 24px;
            }

            .filter-bar {
                padding: 12px 14px;
                gap: 8px;
            }

            .filter-bar .filter-btn {
                padding: 6px 12px;
                font-size: 12px;
            }

            .expert-card {
                padding: 18px;
            }

            .expert-card.with-image .card-body {
                padding: 14px 18px 18px;
            }

            .expert-card h3 {
                font-size: 16px;
            }

            .tools-banner h3 {
                font-size: 19px;
            }

            .cta-section h2 {
                font-size: 22px;
            }

            .cta-form {
                flex-direction: column;
            }

            .cta-form input[type="email"] {
                min-width: auto;
            }

            .risk-notice {
                padding: 18px 20px;
                flex-direction: column;
                align-items: flex-start;
            }

            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .site-footer {
                padding: 32px 0 20px;
            }

            .site-footer .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }

            .breadcrumb-bar .breadcrumb-list {
                font-size: 13px;
                gap: 4px;
            }
        }

        @media (max-width: 520px) {
            :root {
                --section-pad-mobile: 32px 0;
            }

            .container-main {
                padding-left: 16px;
                padding-right: 16px;
            }

            .brand-logo {
                font-size: 18px;
            }

            .category-header h1 {
                font-size: 21px;
                line-height: 1.35;
            }

            .category-header .desc {
                font-size: 14px;
            }

            .category-header .meta-chip {
                font-size: 12px;
                padding: 4px 12px;
            }

            .filter-bar {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }

            .filter-bar .filter-group {
                width: 100%;
                overflow-x: auto;
                flex-wrap: nowrap;
                padding-bottom: 4px;
                -webkit-overflow-scrolling: touch;
            }

            .expert-card {
                padding: 14px;
                gap: 8px;
            }

            .expert-card .summary {
                font-size: 13px;
            }

            .expert-card .tag {
                font-size: 11px;
                padding: 3px 10px;
            }

            .expert-card .read-more {
                font-size: 13px;
            }

            .topic-tag-link {
                padding: 8px 16px;
                font-size: 13px;
            }

            .tools-banner {
                padding: 20px 18px;
                border-radius: var(--radius-card);
            }

            .tools-banner .banner-cta {
                padding: 10px 20px;
                font-size: 14px;
            }

            .cta-section {
                padding: 28px 18px;
                border-radius: var(--radius-card);
            }

            .faq-question {
                padding: 14px 16px;
                font-size: 15px;
            }

            .faq-answer {
                padding: 0 16px;
            }

            .faq-item.open .faq-answer {
                padding: 0 16px 16px;
                max-height: 280px;
            }

            .topic-tags-grid {
                gap: 8px;
            }
        }

        @media (min-width: 1025px) {
            .main-nav {
                display: flex !important;
            }
        }

/* roulang page: category5 */
:root {
            --color-primary: #123B2F;
            --color-primary-dark: #0F3D2E;
            --color-primary-deeper: #092B20;
            --color-bg-warm: #F5F7F2;
            --color-bg-light: #E9EDE4;
            --color-accent: #C6F432;
            --color-accent-deep: #B6E32E;
            --color-warning: #F2A104;
            --color-danger: #D94F30;
            --color-text-dark: #1A1D1B;
            --color-text-gray: #5A625D;
            --color-text-white: #FFFFFF;
            --color-card-bg: #FFFFFF;
            --color-border: #E1E7DE;
            --color-border-input: #D9E0D6;
            --color-badge-bg: rgba(198, 244, 50, 0.12);
            --color-badge-text: #4A5A0A;
            --radius-card: 14px;
            --radius-btn: 999px;
            --radius-input: 10px;
            --shadow-card: 0 2px 12px rgba(15, 61, 46, 0.06);
            --shadow-card-hover: 0 12px 28px rgba(15, 61, 46, 0.12);
            --shadow-nav: 0 1px 0 rgba(15, 61, 46, 0.08);
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-numeric: 'Roboto Condensed', 'DIN Alternate', 'Oswald', sans-serif;
            --transition-base: 200ms ease;
            --section-pad-desktop: 64px 0;
            --section-pad-mobile: 40px 0;
            --container-max: 1200px;
            --nav-height: 72px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text-dark);
            background-color: var(--color-bg-warm);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition-base), background-color var(--transition-base), border-color var(--transition-base), opacity var(--transition-base);
        }

        a:hover {
            color: var(--color-primary-dark);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
            border-radius: 4px;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-heading);
            line-height: 1.3;
            color: var(--color-text-dark);
            margin-top: 0;
        }

        h1 {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 1rem;
        }

        h2 {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 0.75rem;
        }

        h3 {
            font-size: 19px;
            font-weight: 600;
            margin-bottom: 0.5rem;
        }

        p {
            margin-top: 0;
        }

        .text-numeric {
            font-family: var(--font-numeric);
            letter-spacing: 0.02em;
        }
        .text-gray {
            color: var(--color-text-gray);
        }
        .text-primary {
            color: var(--color-primary);
        }
        .text-accent {
            color: var(--color-accent);
        }
        .text-warning {
            color: var(--color-warning);
        }
        .text-danger {
            color: var(--color-danger);
        }

        .container-main {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .container-wide {
            max-width: 1400px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        .section {
            padding: var(--section-pad-desktop);
        }
        .section-sm {
            padding: 40px 0;
        }
        .section-bg-warm {
            background-color: var(--color-bg-warm);
        }
        .section-bg-light {
            background-color: var(--color-bg-light);
        }
        .section-bg-dark {
            background-color: var(--color-primary);
            color: var(--color-text-white);
        }
        .section-bg-dark h1,
        .section-bg-dark h2,
        .section-bg-dark h3 {
            color: var(--color-text-white);
        }
        .section-bg-dark .text-gray {
            color: rgba(255, 255, 255, 0.7);
        }
        .section-bg-deeper {
            background-color: var(--color-primary-deeper);
            color: var(--color-text-white);
        }

        /* Header / Navigation */
        .site-header {
            background-color: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--color-border);
            position: sticky;
            top: 0;
            z-index: 999;
            width: 100%;
            min-height: var(--nav-height);
            display: flex;
            align-items: center;
            box-shadow: var(--shadow-nav);
        }
        .site-header .container-main {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            flex-wrap: nowrap;
        }
        .brand-logo {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 21px;
            color: var(--color-primary);
            display: flex;
            align-items: center;
            gap: 10px;
            line-height: 1;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .brand-logo a {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: inherit;
            text-decoration: none;
        }
        .brand-logo .logo-dot {
            display: inline-block;
            width: 12px;
            height: 12px;
            background-color: var(--color-accent);
            border-radius: 50%;
            flex-shrink: 0;
            box-shadow: 0 0 0 3px rgba(198, 244, 50, 0.2);
        }
        .brand-logo a:hover {
            color: var(--color-primary-dark);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 26px;
            margin-left: auto;
            flex-shrink: 0;
        }
        .main-nav a {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-gray);
            position: relative;
            padding: 6px 2px;
            white-space: nowrap;
            text-decoration: none;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            background-color: var(--color-primary);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform var(--transition-base);
        }
        .main-nav a:hover {
            color: var(--color-primary);
        }
        .main-nav a:hover::after {
            transform: scaleX(1);
        }
        .main-nav a.active {
            color: var(--color-primary);
            font-weight: 600;
        }
        .main-nav a.active::after {
            transform: scaleX(1);
        }

        .nav-toggle {
            display: none;
            background: transparent;
            border: none;
            cursor: pointer;
            padding: 8px;
            margin-left: auto;
            font-size: 22px;
            color: var(--color-primary);
            line-height: 1;
            flex-shrink: 0;
        }
        .nav-toggle:hover {
            color: var(--color-primary-dark);
        }

        /* Mobile nav drawer */
        .mobile-nav {
            display: none;
            flex-direction: column;
            background-color: #fff;
            border-bottom: 1px solid var(--color-border);
            padding: 16px 20px 20px;
            position: absolute;
            top: var(--nav-height);
            left: 0;
            right: 0;
            z-index: 998;
            box-shadow: 0 20px 30px rgba(15, 61, 46, 0.1);
        }
        .mobile-nav a {
            padding: 10px 0;
            font-size: 15px;
            color: var(--color-text-dark);
            border-bottom: 1px solid var(--color-bg-light);
            text-decoration: none;
        }
        .mobile-nav a:last-child {
            border-bottom: none;
        }
        .mobile-nav a.active {
            color: var(--color-primary);
            font-weight: 600;
        }
        .mobile-nav.open {
            display: flex;
        }

        /* Breadcrumb */
        .breadcrumb-bar {
            padding: 18px 0 0;
            font-size: 13px;
            color: var(--color-text-gray);
        }
        .breadcrumb-bar a {
            color: var(--color-text-gray);
            text-decoration: none;
        }
        .breadcrumb-bar a:hover {
            color: var(--color-primary);
        }
        .breadcrumb-bar .sep {
            margin: 0 8px;
            color: #B0B8B0;
        }
        .breadcrumb-bar .current {
            color: var(--color-primary);
            font-weight: 500;
        }

        /* Category page hero - compact */
        .cat-hero {
            padding: 28px 0 36px;
            background-color: var(--color-bg-warm);
            border-bottom: 1px solid var(--color-border);
        }
        .cat-hero .cat-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 10px;
        }
        .cat-hero .cat-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background-color: var(--color-badge-bg);
            color: var(--color-badge-text);
            padding: 5px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
        }
        .cat-hero h1 {
            margin-bottom: 0.75rem;
            font-size: 30px;
        }
        .cat-hero .cat-desc {
            max-width: 760px;
            font-size: 15px;
            color: var(--color-text-gray);
            line-height: 1.8;
            margin-bottom: 0;
        }

        /* Filter toolbar */
        .filter-bar {
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 16px 18px;
            margin-bottom: 28px;
            box-shadow: var(--shadow-card);
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }
        .filter-bar .filter-label {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-text-gray);
            margin-right: 4px;
            white-space: nowrap;
        }
        .filter-bar .filter-group {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            align-items: center;
        }
        .filter-btn {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 7px 16px;
            border-radius: 999px;
            border: 1px solid var(--color-border);
            background-color: #fff;
            color: var(--color-text-gray);
            font-size: 13px;
            cursor: pointer;
            transition: all var(--transition-base);
            font-family: var(--font-body);
            line-height: 1.4;
        }
        .filter-btn:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
        }
        .filter-btn.active {
            background-color: var(--color-primary);
            border-color: var(--color-primary);
            color: #fff;
            font-weight: 600;
        }
        .filter-btn:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }

        select.filter-select {
            padding: 7px 30px 7px 14px;
            border-radius: 999px;
            border: 1px solid var(--color-border-input);
            background-color: #fff;
            font-size: 13px;
            color: var(--color-text-dark);
            cursor: pointer;
            font-family: var(--font-body);
            appearance: none;
            background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%235A625D' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
            background-repeat: no-repeat;
            background-position: right 10px center;
            background-size: 14px;
        }
        select.filter-select:hover {
            border-color: var(--color-primary);
        }

        /* Tools list */
        .tools-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .tool-card {
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: transform var(--transition-base), box-shadow var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .tool-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
        }
        .tool-card .tool-thumb {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background-color: var(--color-bg-light);
        }
        .tool-card .tool-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 400ms ease;
        }
        .tool-card:hover .tool-thumb img {
            transform: scale(1.03);
        }
        .tool-card .tool-thumb .thumb-flag {
            position: absolute;
            top: 12px;
            left: 12px;
            background-color: var(--color-primary);
            color: #fff;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.02em;
        }
        .tool-card .tool-body {
            padding: 18px 18px 16px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .tool-card .tool-date {
            font-size: 12px;
            color: var(--color-text-gray);
            margin-bottom: 8px;
            font-family: var(--font-numeric);
            letter-spacing: 0.02em;
        }
        .tool-card h3 {
            font-size: 17px;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .tool-card h3 a {
            color: var(--color-text-dark);
            text-decoration: none;
        }
        .tool-card h3 a:hover {
            color: var(--color-primary);
        }
        .tool-card .tool-summary {
            font-size: 13.5px;
            color: var(--color-text-gray);
            line-height: 1.7;
            margin-bottom: 14px;
            flex: 1;
        }
        .tool-card .tool-tags {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
            margin-bottom: 14px;
        }
        .tool-card .tool-tags .tag {
            background-color: var(--color-bg-light);
            color: var(--color-text-gray);
            padding: 3px 10px;
            border-radius: 999px;
            font-size: 12px;
        }
        .tool-card .tool-footer-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-top: 1px solid var(--color-border);
            padding-top: 12px;
            margin-top: auto;
        }
        .read-more-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 7px 16px;
            border-radius: 999px;
            border: 1px solid var(--color-primary);
            background: transparent;
            color: var(--color-primary);
            font-size: 13px;
            font-weight: 500;
            cursor: pointer;
            transition: all var(--transition-base);
            font-family: var(--font-body);
            text-decoration: none;
        }
        .read-more-btn:hover {
            background-color: var(--color-primary);
            color: #fff;
        }
        .tool-card .tool-meta-num {
            font-size: 12px;
            color: var(--color-text-gray);
            font-family: var(--font-numeric);
        }

        /* Hot tags / related topics */
        .hot-tags-section {
            padding: 40px 0;
            background-color: var(--color-card-bg);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }
        .hot-tags-section .tags-cloud {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            align-items: center;
        }
        .hot-tags-section .tags-cloud .tag-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: 999px;
            background-color: var(--color-bg-light);
            color: var(--color-text-dark);
            font-size: 13px;
            text-decoration: none;
            transition: all var(--transition-base);
            border: 1px solid transparent;
        }
        .hot-tags-section .tags-cloud .tag-link:hover {
            background-color: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
        }
        .hot-tags-section .tags-cloud .tag-link .tag-count {
            font-family: var(--font-numeric);
            font-size: 11px;
            color: var(--color-text-gray);
            margin-left: 2px;
        }
        .hot-tags-section .tags-cloud .tag-link:hover .tag-count {
            color: rgba(255, 255, 255, 0.7);
        }

        /* Data tools service banner */
        .tools-service-banner {
            padding: 56px 0;
            background-color: var(--color-primary);
            color: var(--color-text-white);
            position: relative;
            overflow: hidden;
        }
        .tools-service-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/88fdc9f84623aac6.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
            z-index: 0;
        }
        .tools-service-banner .container-main {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 30px;
            flex-wrap: wrap;
        }
        .tools-service-banner h2 {
            color: var(--color-text-white);
            margin-bottom: 0.5rem;
            font-size: 24px;
        }
        .tools-service-banner p {
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 0;
            max-width: 560px;
            font-size: 14px;
            line-height: 1.7;
        }
        .tools-service-banner .banner-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 26px;
            border-radius: 999px;
            background-color: var(--color-accent);
            color: var(--color-primary-dark);
            font-weight: 600;
            font-size: 15px;
            text-decoration: none;
            transition: all var(--transition-base);
            white-space: nowrap;
        }
        .tools-service-banner .banner-cta:hover {
            background-color: var(--color-accent-deep);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(198, 244, 50, 0.3);
        }

        /* Subscribe CTA */
        .subscribe-cta {
            padding: 56px 0;
            background-color: var(--color-bg-light);
        }
        .subscribe-cta .cta-card {
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 32px 28px;
            display: flex;
            align-items: center;
            gap: 28px;
            flex-wrap: wrap;
            justify-content: space-between;
        }
        .subscribe-cta .cta-text h3 {
            margin-bottom: 6px;
            font-size: 20px;
        }
        .subscribe-cta .cta-text p {
            color: var(--color-text-gray);
            font-size: 14px;
            margin-bottom: 0;
        }
        .subscribe-cta .cta-form {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            align-items: center;
        }
        .subscribe-cta .cta-form input[type="email"] {
            padding: 11px 18px;
            border-radius: var(--radius-input);
            border: 1px solid var(--color-border-input);
            background-color: #fff;
            font-size: 14px;
            min-width: 260px;
            font-family: var(--font-body);
            transition: border-color var(--transition-base);
        }
        .subscribe-cta .cta-form input[type="email"]:focus {
            border-color: var(--color-accent-deep);
            outline: none;
        }
        .subscribe-cta .cta-form .btn-subscribe {
            padding: 11px 24px;
            border-radius: 999px;
            background-color: var(--color-accent);
            color: var(--color-primary-dark);
            border: none;
            font-weight: 600;
            font-size: 14px;
            cursor: pointer;
            font-family: var(--font-body);
            transition: all var(--transition-base);
        }
        .subscribe-cta .cta-form .btn-subscribe:hover {
            background-color: var(--color-accent-deep);
            transform: translateY(-2px);
            box-shadow: 0 8px 18px rgba(198, 244, 50, 0.3);
        }

        /* FAQ section */
        .faq-section {
            padding: 56px 0;
            background-color: var(--color-bg-warm);
        }
        .faq-section .faq-item {
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-base);
        }
        .faq-section .faq-item:hover {
            box-shadow: var(--shadow-card-hover);
        }
        .faq-section .faq-question {
            width: 100%;
            background: transparent;
            border: none;
            padding: 16px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-dark);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            text-align: left;
            font-family: var(--font-body);
            transition: color var(--transition-base);
            line-height: 1.5;
        }
        .faq-section .faq-question:hover {
            color: var(--color-primary);
        }
        .faq-section .faq-question .faq-icon {
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background-color: var(--color-bg-light);
            color: var(--color-primary);
            font-size: 14px;
            transition: transform var(--transition-base);
        }
        .faq-section .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
            background-color: var(--color-accent);
            color: var(--color-primary-dark);
        }
        .faq-section .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 300ms ease, padding 300ms ease;
            padding: 0 20px;
            font-size: 14px;
            color: var(--color-text-gray);
            line-height: 1.7;
        }
        .faq-section .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px;
        }

        /* Risk notice */
        .risk-notice {
            padding: 20px 0 40px;
            background-color: var(--color-bg-warm);
        }
        .risk-box {
            background-color: #FFF8ED;
            border: 1px solid #F5E5C8;
            border-radius: var(--radius-card);
            padding: 18px 20px;
            display: flex;
            gap: 14px;
            align-items: flex-start;
        }
        .risk-box .risk-icon {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            background-color: var(--color-warning);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 14px;
        }
        .risk-box p {
            font-size: 13.5px;
            color: #6A5B3D;
            margin-bottom: 0;
            line-height: 1.7;
        }

        /* Footer */
        .site-footer {
            background-color: var(--color-primary-deeper);
            color: rgba(255, 255, 255, 0.8);
            padding: 48px 0 28px;
            margin-top: 0;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 30px;
            margin-bottom: 28px;
        }
        .site-footer .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 12px;
        }
        .site-footer .footer-col p {
            font-size: 13.5px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
        }
        .site-footer .footer-col a {
            display: block;
            font-size: 13.5px;
            color: rgba(255, 255, 255, 0.6);
            text-decoration: none;
            padding: 4px 0;
            transition: color var(--transition-base);
        }
        .site-footer .footer-col a:hover {
            color: var(--color-accent);
        }
        .site-footer .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            font-size: 12.5px;
            color: rgba(255, 255, 255, 0.5);
        }
        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
            text-decoration: none;
        }
        .site-footer .footer-bottom a:hover {
            color: var(--color-accent);
        }
        .site-footer .brand-name {
            color: var(--color-accent);
            font-weight: 600;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .main-nav {
                display: none;
            }
            .nav-toggle {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }
            .tools-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            :root {
                --nav-height: 68px;
            }
            h1 {
                font-size: 26px;
            }
            .cat-hero h1 {
                font-size: 26px;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: var(--section-pad-mobile);
            }
            .tools-grid {
                grid-template-columns: 1fr;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .tools-service-banner .container-main {
                flex-direction: column;
                align-items: flex-start;
            }
            .subscribe-cta .cta-card {
                flex-direction: column;
                align-items: flex-start;
                padding: 24px 20px;
            }
            .subscribe-cta .cta-form input[type="email"] {
                min-width: 100%;
                width: 100%;
            }
            .subscribe-cta .cta-form {
                width: 100%;
            }
            .filter-bar {
                padding: 12px 14px;
                gap: 8px;
            }
            .filter-bar .filter-group {
                gap: 6px;
            }
            .filter-btn {
                padding: 6px 12px;
                font-size: 12px;
            }
        }

        @media (max-width: 520px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .cat-hero h1 {
                font-size: 22px;
            }
            .cat-hero .cat-desc {
                font-size: 14px;
            }
            .tools-service-banner h2 {
                font-size: 20px;
            }
            .tools-service-banner .banner-cta {
                width: 100%;
                justify-content: center;
            }
            .faq-section .faq-question {
                font-size: 14px;
                padding: 14px 16px;
            }
            .faq-section .faq-answer {
                padding: 0 16px;
                font-size: 13px;
            }
            .faq-section .faq-item.open .faq-answer {
                padding: 0 16px 16px;
            }
        }

/* roulang page: category7 */
:root {
            --color-primary: #123B2F;
            --color-primary-dark: #0F3D2E;
            --color-primary-deeper: #092B20;
            --color-bg-warm: #F5F7F2;
            --color-bg-light: #E9EDE4;
            --color-accent: #C6F432;
            --color-accent-deep: #B6E32E;
            --color-warning: #F2A104;
            --color-danger: #D94F30;
            --color-text-dark: #1A1D1B;
            --color-text-gray: #5A625D;
            --color-text-white: #FFFFFF;
            --color-card-bg: #FFFFFF;
            --color-border: #E1E7DE;
            --color-border-input: #D9E0D6;
            --radius-card: 14px;
            --radius-btn: 999px;
            --radius-input: 10px;
            --shadow-card: 0 2px 12px rgba(15, 61, 46, 0.06);
            --shadow-card-hover: 0 12px 28px rgba(15, 61, 46, 0.12);
            --shadow-nav: 0 1px 0 rgba(15, 61, 46, 0.08);
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-numeric: 'Roboto Condensed', 'DIN Alternate', 'Oswald', sans-serif;
            --transition-base: 200ms ease;
            --section-pad-desktop: 64px 0;
            --section-pad-mobile: 40px 0;
            --container-max: 1200px;
            --nav-height: 72px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text-dark);
            background-color: var(--color-bg-warm);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition-base), background-color var(--transition-base), border-color var(--transition-base), opacity var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
        }

        a:hover {
            color: var(--color-primary-dark);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
            border-radius: 4px;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-heading);
            color: var(--color-text-dark);
            line-height: 1.3;
            margin: 0 0 0.75rem;
            font-weight: 700;
        }

        h1 {
            font-size: 30px;
            line-height: 1.28;
            letter-spacing: 0.01em;
        }

        h2 {
            font-size: 24px;
            margin-bottom: 1rem;
        }

        h3 {
            font-size: 19px;
            margin-bottom: 0.6rem;
        }

        h4 {
            font-size: 17px;
            margin-bottom: 0.5rem;
        }

        p {
            margin: 0 0 1rem;
        }

        .text-numeric {
            font-family: var(--font-numeric);
            letter-spacing: 0.02em;
        }

        .text-gray {
            color: var(--color-text-gray);
        }

        .text-primary {
            color: var(--color-primary);
        }

        .text-accent {
            color: var(--color-accent);
        }

        .text-warning {
            color: var(--color-warning);
        }

        .text-danger {
            color: var(--color-danger);
        }

        .container-main {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        .container-wide {
            max-width: 1400px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        .section {
            padding: var(--section-pad-desktop);
        }

        .section-sm {
            padding: 40px 0;
        }

        .section-bg-warm {
            background-color: var(--color-bg-warm);
        }

        .section-bg-light {
            background-color: var(--color-bg-light);
        }

        .section-bg-dark {
            background-color: var(--color-primary);
            color: var(--color-text-white);
        }

        .section-bg-dark h1,
        .section-bg-dark h2,
        .section-bg-dark h3,
        .section-bg-dark h4 {
            color: var(--color-text-white);
        }

        .section-bg-dark .text-gray {
            color: rgba(255, 255, 255, 0.72);
        }

        .section-bg-deeper {
            background-color: var(--color-primary-deeper);
            color: var(--color-text-white);
        }

        .section-bg-deeper h1,
        .section-bg-deeper h2,
        .section-bg-deeper h3,
        .section-bg-deeper h4 {
            color: var(--color-text-white);
        }

        .section-header {
            margin-bottom: 2.2rem;
        }

        .section-header h2 {
            margin-bottom: 0.7rem;
        }

        .section-header p {
            margin-bottom: 0;
            max-width: 720px;
            color: var(--color-text-gray);
        }

        /* Header / Navigation */
        .site-header {
            background-color: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--color-border);
            position: sticky;
            top: 0;
            z-index: 999;
            width: 100%;
            min-height: var(--nav-height);
            display: flex;
            align-items: center;
        }

        .site-header .container-main {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: 24px;
        }

        .brand-logo {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 22px;
            color: var(--color-primary);
            display: flex;
            align-items: center;
            gap: 10px;
            line-height: 1;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .brand-logo a {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: inherit;
            text-decoration: none;
            font-size: 20px;
            letter-spacing: 0.01em;
        }

        .brand-logo .logo-dot {
            display: inline-block;
            width: 12px;
            height: 12px;
            background-color: var(--color-accent);
            border-radius: 50%;
            flex-shrink: 0;
            box-shadow: 0 0 0 3px rgba(198, 244, 50, 0.22);
        }

        .brand-logo a:hover {
            color: var(--color-primary-dark);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 26px;
            flex-wrap: nowrap;
        }

        .main-nav a {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-dark);
            text-decoration: none;
            padding: 8px 2px;
            position: relative;
            white-space: nowrap;
            transition: color var(--transition-base);
        }

        .main-nav a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background-color: var(--color-primary);
            transition: width var(--transition-base);
            border-radius: 1px;
        }

        .main-nav a:hover {
            color: var(--color-primary);
        }

        .main-nav a:hover::after {
            width: 100%;
        }

        .main-nav a.active {
            color: var(--color-primary);
            font-weight: 600;
        }

        .main-nav a.active::after {
            width: 100%;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 10px;
            border-radius: 8px;
            transition: background-color var(--transition-base);
        }

        .nav-toggle:hover {
            background-color: var(--color-bg-light);
        }

        .nav-toggle-bar {
            display: block;
            width: 24px;
            height: 2px;
            background-color: var(--color-primary);
            margin: 5px 0;
            border-radius: 2px;
            transition: transform var(--transition-base), opacity var(--transition-base);
        }

        .nav-toggle.active .nav-toggle-bar:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .nav-toggle.active .nav-toggle-bar:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle.active .nav-toggle-bar:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* Breadcrumb */
        .breadcrumb-bar {
            background-color: var(--color-bg-warm);
            padding: 14px 0;
            border-bottom: 1px solid var(--color-border);
        }

        .breadcrumb {
            font-size: 14px;
            color: var(--color-text-gray);
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            margin: 0;
        }

        .breadcrumb a {
            color: var(--color-text-gray);
            text-decoration: none;
            transition: color var(--transition-base);
        }

        .breadcrumb a:hover {
            color: var(--color-primary);
        }

        .breadcrumb .separator {
            color: #B0B8B0;
            font-size: 12px;
        }

        .breadcrumb .current {
            color: var(--color-primary);
            font-weight: 500;
        }

        /* Category Header */
        .category-header {
            padding: 42px 0 28px;
            background-color: var(--color-bg-warm);
            border-bottom: 1px solid var(--color-border);
        }

        .category-header-inner {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }

        .category-header-text {
            flex: 1;
            min-width: 280px;
            max-width: 780px;
        }

        .category-header-text h1 {
            font-size: 32px;
            margin-bottom: 0.6rem;
            letter-spacing: 0.01em;
        }

        .category-header-text .category-badge {
            display: inline-block;
            background-color: var(--color-accent);
            color: var(--color-primary-dark);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 999px;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }

        .category-header-text p {
            font-size: 15px;
            color: var(--color-text-gray);
            max-width: 720px;
            margin-bottom: 0;
        }

        .category-header-img {
            flex-shrink: 0;
            width: 180px;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
        }

        .category-header-img img {
            width: 100%;
            height: 140px;
            object-fit: cover;
        }

        /* Filter / Sort Toolbar */
        .filter-toolbar {
            padding: 18px 0;
            background-color: var(--color-bg-warm);
            border-bottom: 1px solid var(--color-border);
        }

        .filter-toolbar-inner {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        .filter-group {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .filter-label {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-gray);
            white-space: nowrap;
        }

        .filter-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 500;
            padding: 7px 16px;
            border-radius: 999px;
            border: 1px solid var(--color-border);
            background-color: var(--color-card-bg);
            color: var(--color-text-dark);
            cursor: pointer;
            transition: all var(--transition-base);
            white-space: nowrap;
            font-family: var(--font-body);
        }

        .filter-btn:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background-color: #F8FBF7;
        }

        .filter-btn.active {
            background-color: var(--color-primary);
            color: var(--color-text-white);
            border-color: var(--color-primary);
        }

        .filter-select {
            font-size: 13px;
            padding: 7px 32px 7px 14px;
            border-radius: 999px;
            border: 1px solid var(--color-border-input);
            background-color: var(--color-card-bg);
            color: var(--color-text-dark);
            font-family: var(--font-body);
            cursor: pointer;
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%235A625D' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 14px center;
            transition: border-color var(--transition-base);
        }

        .filter-select:focus {
            border-color: var(--color-accent);
            outline: none;
        }

        /* Card List Grid */
        .card-grid-section {
            padding: 40px 0 56px;
            background-color: var(--color-bg-warm);
        }

        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 22px;
        }

        .content-card {
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: transform var(--transition-base), box-shadow var(--transition-base);
            display: flex;
            flex-direction: column;
        }

        .content-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
        }

        .content-card-img {
            width: 100%;
            height: 170px;
            overflow: hidden;
            position: relative;
        }

        .content-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 350ms ease;
        }

        .content-card:hover .content-card-img img {
            transform: scale(1.04);
        }

        .content-card-body {
            padding: 18px 20px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .content-card-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            margin-bottom: 10px;
        }

        .card-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            padding: 3px 10px;
            border-radius: 999px;
            background-color: var(--color-bg-light);
            color: var(--color-primary);
            letter-spacing: 0.02em;
        }

        .card-tag.warning {
            background-color: rgba(242, 161, 4, 0.12);
            color: #B47C00;
        }

        .card-tag.danger {
            background-color: rgba(217, 79, 48, 0.1);
            color: var(--color-danger);
        }

        .content-card h3 {
            font-size: 17px;
            margin-bottom: 0.5rem;
            line-height: 1.42;
        }

        .content-card h3 a {
            color: var(--color-text-dark);
            text-decoration: none;
            transition: color var(--transition-base);
        }

        .content-card h3 a:hover {
            color: var(--color-primary);
        }

        .content-card-date {
            font-size: 13px;
            color: var(--color-text-gray);
            font-family: var(--font-numeric);
            margin-bottom: 8px;
            letter-spacing: 0.02em;
        }

        .content-card-summary {
            font-size: 14px;
            color: var(--color-text-gray);
            line-height: 1.68;
            margin-bottom: 14px;
            flex: 1;
        }

        .card-read-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition-base), gap var(--transition-base);
            align-self: flex-start;
            border-bottom: 1px solid transparent;
            padding-bottom: 2px;
        }

        .card-read-more:hover {
            color: var(--color-primary-dark);
            gap: 10px;
            border-bottom-color: var(--color-primary);
        }

        /* Tags Section */
        .tags-section {
            padding: 36px 0;
            background-color: var(--color-card-bg);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }

        .tags-section-inner {
            display: flex;
            align-items: flex-start;
            gap: 18px;
            flex-wrap: wrap;
        }

        .tags-section-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-dark);
            white-space: nowrap;
            padding-top: 6px;
        }

        .tag-cloud {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }

        .tag-cloud a {
            display: inline-block;
            font-size: 13px;
            font-weight: 500;
            padding: 6px 18px;
            border-radius: 999px;
            border: 1px solid var(--color-border);
            color: var(--color-text-gray);
            text-decoration: none;
            transition: all var(--transition-base);
            background-color: var(--color-bg-warm);
        }

        .tag-cloud a:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background-color: #F8FBF7;
        }

        /* Tool Banner */
        .tool-banner {
            padding: 28px 0;
            background-color: var(--color-bg-light);
        }

        .tool-banner-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 22px 26px;
            box-shadow: var(--shadow-card);
        }

        .tool-banner-text h3 {
            font-size: 18px;
            margin-bottom: 4px;
        }

        .tool-banner-text p {
            font-size: 14px;
            color: var(--color-text-gray);
            margin-bottom: 0;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            padding: 11px 22px;
            border-radius: var(--radius-btn);
            border: none;
            cursor: pointer;
            font-family: var(--font-body);
            text-decoration: none;
            transition: all var(--transition-base);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }

        .btn-primary {
            background-color: var(--color-primary);
            color: var(--color-text-white);
            border: 1px solid var(--color-primary);
        }

        .btn-primary:hover {
            background-color: var(--color-primary-dark);
            border-color: var(--color-primary-dark);
            color: var(--color-text-white);
            transform: translateY(-1px);
            box-shadow: 0 6px 14px rgba(18, 59, 47, 0.18);
        }

        .btn-accent {
            background-color: var(--color-accent);
            color: var(--color-primary-dark);
            border: 1px solid var(--color-accent);
        }

        .btn-accent:hover {
            background-color: var(--color-accent-deep);
            border-color: var(--color-accent-deep);
            color: var(--color-primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 6px 14px rgba(198, 244, 50, 0.22);
        }

        .btn-outline {
            background-color: transparent;
            color: var(--color-primary);
            border: 1px solid var(--color-primary);
        }

        .btn-outline:hover {
            background-color: var(--color-primary);
            color: var(--color-text-white);
            transform: translateY(-1px);
            box-shadow: 0 6px 14px rgba(18, 59, 47, 0.14);
        }

        .btn-sm {
            font-size: 13px;
            padding: 8px 18px;
        }

        /* CTA Section */
        .cta-section {
            padding: 48px 0;
            background-color: var(--color-primary);
        }

        .cta-section-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }

        .cta-section-text {
            flex: 1;
            min-width: 280px;
        }

        .cta-section-text h2 {
            color: var(--color-text-white);
            font-size: 24px;
            margin-bottom: 0.5rem;
        }

        .cta-section-text p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 15px;
            margin-bottom: 0;
        }

        .cta-form {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            align-items: center;
        }

        .cta-input {
            font-size: 14px;
            padding: 12px 18px;
            border-radius: var(--radius-input);
            border: 1px solid rgba(255, 255, 255, 0.3);
            background-color: rgba(255, 255, 255, 0.12);
            color: var(--color-text-white);
            font-family: var(--font-body);
            min-width: 240px;
            transition: border-color var(--transition-base), background-color var(--transition-base);
        }

        .cta-input::placeholder {
            color: rgba(255, 255, 255, 0.55);
        }

        .cta-input:focus {
            outline: none;
            border-color: var(--color-accent);
            background-color: rgba(255, 255, 255, 0.16);
        }

        /* FAQ Section */
        .faq-section {
            padding: 52px 0;
            background-color: var(--color-bg-warm);
        }

        .faq-section .section-header h2 {
            margin-bottom: 0.4rem;
        }

        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }

        .faq-item {
            background-color: var(--color-card-bg);
            border: 1px solid var(--color-border);
            border-radius: 12px;
            margin-bottom: 12px;
            overflow: hidden;
            transition: box-shadow var(--transition-base), border-color var(--transition-base);
        }

        .faq-item:hover {
            border-color: #C9D4C5;
            box-shadow: 0 4px 14px rgba(15, 61, 46, 0.05);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 16px 20px;
            cursor: pointer;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            font-family: var(--font-body);
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-dark);
            transition: color var(--transition-base);
            position: relative;
        }

        .faq-question:hover {
            color: var(--color-primary);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            font-size: 18px;
            color: var(--color-text-gray);
            transition: transform var(--transition-base), color var(--transition-base);
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background-color: var(--color-bg-light);
            font-weight: 400;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            color: var(--color-primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 350ms ease, padding 350ms ease;
            padding: 0 20px;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 20px 18px;
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--color-text-gray);
            line-height: 1.72;
            margin-bottom: 0;
        }

        /* Risk Notice */
        .risk-notice {
            padding: 28px 0;
            background-color: var(--color-primary-deeper);
        }

        .risk-notice-inner {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            flex-wrap: wrap;
        }

        .risk-notice-icon {
            flex-shrink: 0;
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background-color: rgba(198, 244, 50, 0.16);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: var(--color-accent);
        }

        .risk-notice-text h3 {
            font-size: 16px;
            color: var(--color-text-white);
            margin-bottom: 4px;
        }

        .risk-notice-text p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 0;
            line-height: 1.7;
        }

        /* Footer */
        .site-footer {
            background-color: var(--color-primary-deeper);
            color: rgba(255, 255, 255, 0.75);
            padding: 48px 0 24px;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 36px;
        }

        .footer-col h4 {
            color: var(--color-text-white);
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

        .footer-col p {
            font-size: 14px;
            line-height: 1.72;
            color: rgba(255, 255, 255, 0.62);
            max-width: 280px;
        }

        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
            padding: 4px 0;
            text-decoration: none;
            transition: color var(--transition-base), padding-left var(--transition-base);
        }

        .footer-col a:hover {
            color: var(--color-accent);
            padding-left: 4px;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-bottom .brand-name {
            color: rgba(255, 255, 255, 0.75);
            font-weight: 500;
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.55);
            text-decoration: none;
            transition: color var(--transition-base);
        }

        .footer-bottom a:hover {
            color: var(--color-accent);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            :root {
                --nav-height: 64px;
            }

            .section {
                padding: 52px 0;
            }

            .category-header-text h1 {
                font-size: 27px;
            }

            .card-grid {
                grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
            }

            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-height: 60px;
            }

            .section {
                padding: 42px 0;
            }

            .card-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .category-header-inner {
                flex-direction: column;
                gap: 20px;
            }

            .category-header-img {
                width: 100%;
                max-width: 280px;
            }

            .category-header-img img {
                height: 120px;
            }

            .category-header-text h1 {
                font-size: 24px;
            }

            .cta-section-inner {
                flex-direction: column;
                align-items: flex-start;
                gap: 20px;
            }

            .cta-input {
                min-width: 100%;
            }

            .tool-banner-inner {
                flex-direction: column;
                align-items: flex-start;
                padding: 18px 20px;
            }

            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }

            .filter-toolbar-inner {
                gap: 10px;
            }
        }

        @media (max-width: 640px) {
            .main-nav {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                width: 100%;
                background-color: rgba(255, 255, 255, 0.98);
                flex-direction: column;
                gap: 0;
                padding: 12px 20px 20px;
                border-bottom: 1px solid var(--color-border);
                box-shadow: 0 10px 30px rgba(15, 61, 46, 0.06);
                z-index: 998;
            }

            .main-nav.open {
                display: flex;
            }

            .main-nav a {
                padding: 12px 0;
                font-size: 15px;
                border-bottom: 1px solid var(--color-bg-light);
                width: 100%;
            }

            .main-nav a:last-child {
                border-bottom: none;
            }

            .main-nav a::after {
                display: none;
            }

            .nav-toggle {
                display: block;
            }

            .brand-logo a {
                font-size: 18px;
            }

            .card-grid {
                grid-template-columns: 1fr;
            }

            .content-card-img {
                height: 150px;
            }

            .filter-btn {
                padding: 6px 13px;
                font-size: 12px;
            }

            .filter-select {
                font-size: 12px;
                padding: 6px 28px 6px 12px;
            }

            .tag-cloud a {
                font-size: 12px;
                padding: 5px 14px;
            }

            .faq-question {
                font-size: 14px;
                padding: 14px 16px;
            }

            .faq-answer p {
                font-size: 13px;
            }
        }

        @media (max-width: 520px) {
            .category-header-text h1 {
                font-size: 21px;
            }

            .category-header-text p {
                font-size: 14px;
            }

            .breadcrumb {
                font-size: 12px;
                gap: 5px;
            }

            .card-grid {
                grid-template-columns: 1fr;
            }

            .content-card-body {
                padding: 15px 16px 18px;
            }

            .content-card h3 {
                font-size: 15px;
            }

            .content-card-summary {
                font-size: 13px;
            }

            .btn {
                font-size: 13px;
                padding: 9px 18px;
            }

            .cta-section-text h2 {
                font-size: 20px;
            }
        }