/* roulang page: index */
:root {
            --primary: #1F6ED4;
            --primary-hover: #1859B0;
            --primary-soft: #EDF4FB;
            --accent: #0FA3A3;
            --warning: #F08C00;
            --bg: #F6F9FC;
            --card-bg: #FFFFFF;
            --dark-bg: #10243E;
            --text-main: #1A2433;
            --text-secondary: #5A6B7F;
            --text-muted: #8FA0B3;
            --border: #E4EBF2;
            --radius-card: 10px;
            --radius-btn: 6px;
            --radius-tag: 4px;
            --shadow-card: 0 1px 2px rgba(0,0,0,.03), 0 8px 24px rgba(14,60,110,.06);
            --shadow-card-hover: 0 8px 16px rgba(14,60,110,.08), 0 16px 40px rgba(14,60,110,.12);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
            --space-section: 72px;
            --space-section-mobile: 40px;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-main);
            background-color: var(--bg);
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .2s ease;
        }

        a:hover,
        a:focus {
            color: var(--primary-hover);
            text-decoration: none;
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        button,
        input,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (max-width: 640px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        section {
            padding: var(--space-section) 0;
        }

        @media (max-width: 640px) {
            section {
                padding: var(--space-section-mobile) 0;
            }
        }

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

        .section-dark {
            background-color: var(--dark-bg);
            color: #E6EDF5;
        }

        .section-soft {
            background-color: var(--primary-soft);
        }

        .section-title {
            font-size: 24px;
            font-weight: 600;
            line-height: 1.4;
            color: var(--text-main);
            margin: 0 0 12px 0;
            letter-spacing: -0.3px;
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0 0 36px 0;
            max-width: 720px;
        }

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 500;
            color: var(--primary);
            background: var(--primary-soft);
            padding: 4px 12px;
            border-radius: var(--radius-tag);
            margin-bottom: 10px;
            letter-spacing: 0.3px;
        }

        .text-center {
            text-align: center;
        }

        .text-center .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        /* Header / Navigation */
        .site-header {
            background: var(--card-bg);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 1px 4px rgba(14,60,110,.04);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 64px;
            flex-wrap: nowrap;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            flex-shrink: 0;
        }

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

        .nav-logo-icon {
            width: 34px;
            height: 34px;
            background: var(--primary);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .nav-logo span {
            letter-spacing: -0.3px;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-menu > li {
            position: relative;
        }

        .nav-menu > li > a {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 8px 14px;
            border-radius: var(--radius-btn);
            transition: all .2s ease;
            white-space: nowrap;
        }

        .nav-menu > li > a:hover {
            color: var(--primary);
            background: var(--primary-soft);
        }

        .nav-menu > li > a.active {
            color: var(--primary);
            background: var(--primary-soft);
            font-weight: 600;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            width: 40px;
            height: 40px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            color: var(--text-main);
            font-size: 18px;
            transition: all .2s ease;
        }

        .nav-toggle:hover {
            background: var(--primary-soft);
            border-color: var(--primary);
            color: var(--primary);
        }

        .mobile-menu {
            display: none;
            background: var(--card-bg);
            border-top: 1px solid var(--border);
            padding: 16px 24px 24px;
            flex-direction: column;
            gap: 4px;
        }

        .mobile-menu a {
            display: block;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-main);
            padding: 12px 16px;
            border-radius: var(--radius-btn);
            transition: all .2s ease;
        }

        .mobile-menu a:hover {
            background: var(--primary-soft);
            color: var(--primary);
        }

        .mobile-menu .nav-actions {
            margin-top: 16px;
            flex-direction: column;
            width: 100%;
        }

        @media (max-width: 1024px) {
            .nav-menu {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-actions {
                display: none;
            }
            .mobile-menu.is-open {
                display: flex;
            }
            .site-header .container {
                flex-wrap: wrap;
            }
        }

        /* Buttons */
        .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: 1px solid transparent;
            cursor: pointer;
            transition: all .25s ease;
            text-align: center;
            line-height: 1.4;
            white-space: nowrap;
            text-decoration: none !important;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        .btn-primary:hover {
            background: var(--primary-hover);
            border-color: var(--primary-hover);
            color: #fff;
            box-shadow: 0 4px 12px rgba(31,110,212,.25);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }

        .btn-secondary {
            background: var(--card-bg);
            color: var(--primary);
            border-color: var(--primary);
        }

        .btn-secondary:hover {
            background: var(--primary-soft);
            border-color: var(--primary);
            color: var(--primary-hover);
            transform: translateY(-1px);
        }

        .btn-secondary:active {
            transform: translateY(0);
        }

        .btn-sm {
            font-size: 13px;
            padding: 8px 16px;
        }

        .btn-lg {
            font-size: 15px;
            padding: 14px 28px;
        }

        .btn-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            background: none;
            border: none;
            padding: 4px 0;
            cursor: pointer;
            transition: all .2s ease;
        }

        .btn-link:hover {
            color: var(--primary-hover);
            gap: 10px;
        }

        /* Cards */
        .card {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 28px 24px;
            transition: all .3s ease;
            border: 1px solid rgba(228,235,242,.6);
            height: 100%;
        }

        .card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: rgba(31,110,212,.15);
        }

        .card-icon {
            width: 48px;
            height: 48px;
            border-radius: 10px;
            background: var(--primary-soft);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 16px;
            flex-shrink: 0;
        }

        .card-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            margin: 0 0 8px 0;
            line-height: 1.5;
        }

        .card-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin: 0;
        }

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            margin-top: 14px;
            transition: gap .2s ease;
        }

        .card-link:hover {
            gap: 10px;
            color: var(--primary-hover);
        }

        /* Badge / Tag */
        .badge {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            padding: 3px 10px;
            border-radius: var(--radius-tag);
            line-height: 1.5;
            letter-spacing: 0.2px;
        }

        .badge-blue {
            background: var(--primary-soft);
            color: var(--primary);
        }
        .badge-cyan {
            background: rgba(15,163,163,.1);
            color: var(--accent);
        }
        .badge-orange {
            background: rgba(240,140,0,.1);
            color: var(--warning);
        }
        .badge-gray {
            background: #F0F4F8;
            color: var(--text-secondary);
        }

        /* Hero */
        .hero {
            background: linear-gradient(180deg, #F6F9FC 0%, #EDF4FB 100%);
            padding: 72px 0 56px;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(31,110,212,.06) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero .container {
            position: relative;
            z-index: 1;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 500;
            color: var(--primary);
            background: var(--card-bg);
            padding: 6px 16px;
            border-radius: 20px;
            margin-bottom: 20px;
            border: 1px solid rgba(31,110,212,.15);
        }

        .hero h1 {
            font-size: 34px;
            font-weight: 700;
            line-height: 1.35;
            letter-spacing: -0.5px;
            color: var(--text-main);
            margin: 0 0 16px 0;
            max-width: 680px;
        }

        .hero-subtitle {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-secondary);
            margin: 0 0 28px 0;
            max-width: 620px;
        }

        .hero-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 36px;
        }

        .hero-console {
            background: var(--dark-bg);
            border-radius: 12px;
            padding: 24px 28px;
            box-shadow: 0 8px 32px rgba(16,36,62,.18);
            color: #D6E4F0;
            font-family: "SF Mono", "Segoe UI Mono", "Consolas", monospace;
            font-size: 13px;
            line-height: 1.7;
            max-width: 680px;
            margin-bottom: 36px;
            overflow-x: auto;
        }

        .hero-console .console-header {
            display: flex;
            align-items: center;
            gap: 6px;
            margin-bottom: 14px;
            padding-bottom: 10px;
            border-bottom: 1px solid rgba(255,255,255,.08);
        }

        .console-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            display: inline-block;
        }
        .console-dot.red { background: #FF5F57; }
        .console-dot.yellow { background: #FEBC2E; }
        .console-dot.green { background: #28C840; }

        .hero-console .console-line {
            color: #B8CCE0;
        }
        .hero-console .console-line strong {
            color: #5EB8F7;
            font-weight: 600;
        }
        .hero-console .console-line .highlight {
            color: #FFB84D;
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .hero-stat-pill {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--card-bg);
            padding: 10px 18px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-secondary);
            box-shadow: 0 1px 3px rgba(14,60,110,.06);
            border: 1px solid rgba(228,235,242,.8);
        }

        .hero-stat-pill strong {
            color: var(--primary);
            font-weight: 700;
            font-size: 15px;
        }

        @media (max-width: 768px) {
            .hero {
                padding: 48px 0 40px;
            }
            .hero h1 {
                font-size: 26px;
            }
            .hero-subtitle {
                font-size: 15px;
            }
            .hero-console {
                padding: 16px 18px;
                font-size: 12px;
            }
        }

        /* Metric cards */
        .metric-card {
            text-align: center;
            padding: 26px 20px;
        }
        .metric-number {
            font-size: 38px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            letter-spacing: -0.5px;
            font-variant-numeric: tabular-nums;
        }
        .metric-label {
            font-size: 14px;
            color: var(--text-secondary);
            margin-top: 6px;
            font-weight: 500;
        }
        .metric-change {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 13px;
            font-weight: 600;
            margin-top: 8px;
            padding: 2px 10px;
            border-radius: var(--radius-tag);
        }
        .metric-change.up {
            color: var(--accent);
            background: rgba(15,163,163,.1);
        }
        .metric-change.down {
            color: var(--warning);
            background: rgba(240,140,0,.1);
        }

        /* Comparison table */
        .compare-table {
            width: 100%;
            border-collapse: collapse;
            background: var(--card-bg);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .compare-table th,
        .compare-table td {
            padding: 16px 18px;
            text-align: left;
            font-size: 14px;
            border-bottom: 1px solid var(--border);
        }
        .compare-table th {
            background: var(--primary-soft);
            color: var(--text-main);
            font-weight: 600;
            font-size: 13px;
            letter-spacing: 0.2px;
        }
        .compare-table td {
            color: var(--text-secondary);
        }
        .compare-table tr:last-child td {
            border-bottom: none;
        }
        .compare-highlight {
            color: var(--accent);
            font-weight: 600;
        }

        /* Timeline */
        .timeline {
            position: relative;
            padding-left: 28px;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 4px;
            bottom: 4px;
            width: 2px;
            background: var(--border);
        }
        .timeline-item {
            position: relative;
            padding-bottom: 28px;
        }
        .timeline-item:last-child {
            padding-bottom: 0;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -24px;
            top: 6px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--primary);
            border: 2px solid var(--card-bg);
            box-shadow: 0 0 0 2px var(--primary);
        }
        .timeline-date {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 4px;
        }
        .timeline-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin: 0 0 4px 0;
        }
        .timeline-text {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.7;
        }

        /* News list */
        .news-card {
            display: flex;
            gap: 16px;
            align-items: flex-start;
            padding: 20px;
            background: var(--card-bg);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(228,235,242,.6);
            transition: all .3s ease;
            height: 100%;
        }
        .news-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .news-thumb {
            width: 100px;
            height: 72px;
            border-radius: 8px;
            overflow: hidden;
            flex-shrink: 0;
            background: var(--primary-soft);
        }
        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .news-body {
            flex: 1;
            min-width: 0;
        }
        .news-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin: 0 0 6px 0;
            line-height: 1.5;
        }
        .news-summary {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0 0 8px 0;
        }
        .news-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 12px;
            color: var(--text-muted);
        }

        /* Expert cards */
        .expert-card {
            text-align: center;
            padding: 24px 20px;
        }
        .expert-avatar {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            overflow: hidden;
            margin: 0 auto 14px;
            background: var(--primary-soft);
            border: 3px solid var(--primary-soft);
        }
        .expert-avatar img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .expert-name {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin: 0 0 4px 0;
        }
        .expert-role {
            font-size: 12px;
            color: var(--text-muted);
            margin: 0 0 10px 0;
        }
        .expert-view {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
        }

        /* FAQ */
        .faq-item {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            margin-bottom: 14px;
            overflow: hidden;
            border: 1px solid rgba(228,235,242,.6);
            transition: all .25s ease;
        }
        .faq-item:hover {
            border-color: rgba(31,110,212,.2);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            padding: 18px 22px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            transition: all .2s ease;
            user-select: none;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            font-size: 14px;
            color: var(--text-muted);
            transition: transform .25s ease;
        }
        .faq-item.active .faq-icon {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease, padding .35s ease;
            padding: 0 22px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 22px 18px;
        }

        /* Form */
        .form-card {
            background: var(--card-bg);
            border-radius: 12px;
            box-shadow: var(--shadow-card-hover);
            padding: 32px 28px;
            border: 1px solid rgba(228,235,242,.8);
        }
        .form-group {
            margin-bottom: 18px;
        }
        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-main);
            margin-bottom: 6px;
        }
        .form-control {
            width: 100%;
            padding: 11px 14px;
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            font-size: 14px;
            color: var(--text-main);
            background: var(--card-bg);
            transition: all .2s ease;
            appearance: none;
            -webkit-appearance: none;
        }
        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(31,110,212,.1);
        }
        .form-control::placeholder {
            color: var(--text-muted);
        }
        select.form-control {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%235A6B7F' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 14px center;
            padding-right: 36px;
        }

        /* Footer */
        .site-footer {
            background: var(--dark-bg);
            color: #B8C9DB;
            padding: 48px 0 28px;
            margin-top: 0;
        }
        .site-footer .footer-title {
            font-size: 16px;
            font-weight: 700;
            color: #E6EDF5;
            margin: 0 0 14px 0;
        }
        .site-footer p {
            font-size: 13px;
            line-height: 1.8;
            color: #9AAEC0;
            margin: 0 0 12px 0;
        }
        .site-footer a {
            color: #B8C9DB;
            font-size: 13px;
            transition: color .2s ease;
        }
        .site-footer a:hover {
            color: #fff;
        }
        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-links li {
            margin-bottom: 8px;
        }
        .footer-divider {
            border-top: 1px solid rgba(255,255,255,.08);
            margin: 28px 0 20px;
            padding-top: 20px;
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 12px;
            color: #7A8FA3;
        }
        .footer-bottom a {
            font-size: 12px;
            color: #7A8FA3;
        }
        .footer-bottom a:hover {
            color: #fff;
        }

        /* Utility spacing */
        .mt-0 { margin-top: 0 !important; }
        .mt-2 { margin-top: 8px !important; }
        .mt-3 { margin-top: 16px !important; }
        .mt-4 { margin-top: 24px !important; }
        .mt-5 { margin-top: 36px !important; }
        .mb-0 { margin-bottom: 0 !important; }
        .mb-2 { margin-bottom: 8px !important; }
        .mb-3 { margin-bottom: 16px !important; }
        .mb-4 { margin-bottom: 24px !important; }
        .mb-5 { margin-bottom: 36px !important; }
        .gap-2 { gap: 8px; }
        .gap-3 { gap: 16px; }

        /* Reviews */
        .review-card {
            padding: 20px;
            background: var(--card-bg);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(228,235,242,.6);
            height: 100%;
        }
        .review-user {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 10px;
        }
        .review-avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary-soft);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 600;
        }
        .review-name {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-main);
        }
        .review-text {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
        }

        /* Tool cards */
        .tool-card {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 20px;
            background: var(--card-bg);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(228,235,242,.6);
            transition: all .3s ease;
            height: 100%;
        }
        .tool-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .tool-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: var(--primary-soft);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            flex-shrink: 0;
        }

        /* Recommended reading */
        .rec-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .rec-list li {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 14px 0;
            border-bottom: 1px solid var(--border);
            font-size: 14px;
            color: var(--text-secondary);
        }
        .rec-list li:last-child {
            border-bottom: none;
        }
        .rec-list .rec-link {
            color: var(--text-main);
            font-weight: 500;
            transition: color .2s ease;
        }
        .rec-list .rec-link:hover {
            color: var(--primary);
        }
        .rec-list .rec-date {
            font-size: 12px;
            color: var(--text-muted);
            flex-shrink: 0;
            margin-left: auto;
        }

        /* Trust points */
        .trust-point {
            display: flex;
            gap: 14px;
            align-items: flex-start;
            padding: 20px;
            background: var(--card-bg);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(228,235,242,.6);
            height: 100%;
        }
        .trust-icon {
            width: 40px;
            height: 40px;
            border-radius: 8px;
            background: var(--primary-soft);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            flex-shrink: 0;
        }
        .trust-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            margin: 0 0 4px 0;
        }
        .trust-text {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
        }

        /* Topic cards horizontal */
        .topic-card {
            display: flex;
            gap: 16px;
            align-items: center;
            padding: 18px 20px;
            background: var(--card-bg);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(228,235,242,.6);
            transition: all .3s ease;
            height: 100%;
        }
        .topic-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .topic-thumb {
            width: 64px;
            height: 64px;
            border-radius: 8px;
            overflow: hidden;
            flex-shrink: 0;
            background: var(--primary-soft);
        }
        .topic-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .topic-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin: 0 0 4px 0;
        }
        .topic-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.65;
            margin: 0;
        }

        /* Responsive grid adjustments */
        @media (max-width: 640px) {
            .card {
                padding: 20px 16px;
            }
            .section-title {
                font-size: 20px;
            }
            .metric-number {
                font-size: 30px;
            }
            .hero h1 {
                font-size: 22px;
            }
            .hero-console {
                font-size: 11px;
                padding: 12px 14px;
            }
            .news-card {
                flex-direction: column;
            }
            .news-thumb {
                width: 100%;
                height: 140px;
            }
        }

        @media (max-width: 768px) {
            .compare-table th,
            .compare-table td {
                padding: 10px 12px;
                font-size: 12px;
            }
            .timeline {
                padding-left: 22px;
            }
            .timeline-item::before {
                left: -18px;
            }
        }

        /* Accessibility skip link */
        .skip-link {
            position: absolute;
            top: -100px;
            left: 16px;
            z-index: 999;
            background: var(--primary);
            color: #fff;
            padding: 10px 20px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            transition: top .3s ease;
        }
        .skip-link:focus {
            top: 16px;
        }

/* roulang page: category2 */
/* roulang page: betting-analysis */
        :root {
            --primary: #1F6ED4;
            --primary-hover: #1859B0;
            --primary-soft: #EDF4FB;
            --accent: #0FA3A3;
            --warning: #F08C00;
            --bg: #F6F9FC;
            --card-bg: #FFFFFF;
            --dark-bg: #10243E;
            --text-main: #1A2433;
            --text-secondary: #5A6B7F;
            --text-muted: #8FA0B3;
            --border: #E4EBF2;
            --radius-card: 10px;
            --radius-btn: 6px;
            --radius-tag: 4px;
            --shadow-card: 0 1px 2px rgba(0,0,0,.03), 0 8px 24px rgba(14,60,110,.06);
            --shadow-card-hover: 0 8px 16px rgba(14,60,110,.08), 0 16px 40px rgba(14,60,110,.12);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
            --space-section: 72px;
            --space-section-mobile: 40px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-main);
            background-color: var(--bg);
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .2s ease;
        }
        a:hover,
        a:focus {
            color: var(--primary-hover);
            text-decoration: none;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        button,
        input,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        section {
            padding: var(--space-section) 0;
        }
        .section-alt {
            background-color: var(--card-bg);
        }
        .section-soft {
            background-color: var(--primary-soft);
        }
        .section-title {
            font-size: 24px;
            font-weight: 600;
            line-height: 1.4;
            color: var(--text-main);
            margin: 0 0 12px 0;
            letter-spacing: -0.3px;
        }
        .section-subtitle {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0 0 36px 0;
            max-width: 720px;
        }
        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 500;
            color: var(--primary);
            background: var(--primary-soft);
            padding: 4px 12px;
            border-radius: var(--radius-tag);
            margin-bottom: 10px;
            letter-spacing: 0.3px;
        }
        .text-center {
            text-align: center;
        }
        .text-center .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        /* Header / Navigation */
        .site-header {
            background: var(--card-bg);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 1px 4px rgba(14,60,110,.04);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 64px;
            flex-wrap: nowrap;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            flex-shrink: 0;
        }
        .nav-logo:hover {
            color: var(--primary);
        }
        .nav-logo-icon {
            width: 34px;
            height: 34px;
            background: var(--primary);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .nav-logo span {
            letter-spacing: -0.3px;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-menu > li {
            position: relative;
        }
        .nav-menu > li > a {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 8px 14px;
            border-radius: var(--radius-btn);
            transition: all .2s ease;
            white-space: nowrap;
        }
        .nav-menu > li > a:hover {
            color: var(--primary);
            background: var(--primary-soft);
        }
        .nav-menu > li > a.active {
            color: var(--primary);
            background: var(--primary-soft);
            font-weight: 600;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            width: 40px;
            height: 40px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            color: var(--text-main);
            font-size: 18px;
            flex-shrink: 0;
            transition: all .2s ease;
        }
        .nav-toggle:hover {
            background: var(--primary-soft);
            color: var(--primary);
            border-color: var(--primary);
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 500;
            padding: 10px 20px;
            border-radius: var(--radius-btn);
            border: 1px solid transparent;
            cursor: pointer;
            transition: all .25s ease;
            line-height: 1.5;
            text-align: center;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            border-color: var(--primary-hover);
            color: #fff;
        }
        .btn-secondary {
            background: transparent;
            color: var(--primary);
            border-color: var(--border);
        }
        .btn-secondary:hover {
            border-color: var(--primary);
            background: var(--primary-soft);
            color: var(--primary);
        }
        .btn-sm {
            padding: 7px 14px;
            font-size: 13px;
        }
        .btn-block {
            width: 100%;
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 16px;
            padding-top: 16px;
        }
        .breadcrumb a {
            color: var(--text-secondary);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .separator {
            color: var(--text-muted);
            font-size: 13px;
        }
        .breadcrumb .current {
            color: var(--text-main);
            font-weight: 500;
        }

        /* Page Header */
        .page-header {
            background: var(--card-bg);
            border-bottom: 1px solid var(--border);
            padding: 28px 0 32px;
        }
        .page-header .page-title {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-main);
            margin: 0 0 10px 0;
            letter-spacing: -0.5px;
        }
        .page-header .page-desc {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 760px;
            line-height: 1.8;
            margin: 0;
        }

        /* Filter / Toolbar */
        .toolbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 14px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 16px 20px;
            box-shadow: var(--shadow-card);
            margin-bottom: 28px;
        }
        .toolbar .toolbar-group {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }
        .toolbar .toolbar-label {
            font-size: 13px;
            color: var(--text-secondary);
            font-weight: 500;
        }
        .toolbar .filter-btn {
            font-size: 13px;
            padding: 6px 14px;
            border-radius: var(--radius-btn);
            border: 1px solid var(--border);
            background: var(--card-bg);
            color: var(--text-secondary);
            cursor: pointer;
            transition: all .2s ease;
            white-space: nowrap;
        }
        .toolbar .filter-btn:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-soft);
        }
        .toolbar .filter-btn.active {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            font-weight: 500;
        }
        .toolbar .sort-select {
            padding: 6px 12px;
            border-radius: var(--radius-btn);
            border: 1px solid var(--border);
            font-size: 13px;
            color: var(--text-secondary);
            background: var(--card-bg);
            cursor: pointer;
        }

        /* Card Grid */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: box-shadow .25s ease, transform .25s ease;
            display: flex;
            flex-direction: column;
        }
        .card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            background: var(--primary-soft);
        }
        .card-body {
            padding: 20px 22px 22px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .card-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.5;
            margin: 0 0 10px 0;
        }
        .card-title a {
            color: var(--text-main);
        }
        .card-title a:hover {
            color: var(--primary);
        }
        .card-excerpt {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin: 0 0 16px 0;
            flex: 1;
        }
        .card-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .card-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            color: var(--primary);
            background: var(--primary-soft);
            padding: 3px 10px;
            border-radius: var(--radius-tag);
            transition: all .2s ease;
        }
        .card-tag:hover {
            background: var(--primary);
            color: #fff;
        }
        .card-tag.orange {
            color: var(--warning);
            background: rgba(240,140,0,.08);
        }
        .card-tag.orange:hover {
            background: var(--warning);
            color: #fff;
        }
        .card-tag.teal {
            color: var(--accent);
            background: rgba(15,163,163,.08);
        }
        .card-tag.teal:hover {
            background: var(--accent);
            color: #fff;
        }

        /* Tag Cloud */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            padding: 4px 0;
        }
        .tag-cloud .cloud-tag {
            font-size: 13px;
            font-weight: 500;
            padding: 6px 16px;
            border-radius: 20px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            color: var(--text-secondary);
            transition: all .2s ease;
            cursor: pointer;
        }
        .tag-cloud .cloud-tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-soft);
        }
        .tag-cloud .cloud-tag.hot {
            color: var(--warning);
            border-color: rgba(240,140,0,.3);
            background: rgba(240,140,0,.05);
        }
        .tag-cloud .cloud-tag.hot:hover {
            background: var(--warning);
            border-color: var(--warning);
            color: #fff;
        }

        /* Featured Matches */
        .match-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 18px 22px;
            box-shadow: var(--shadow-card);
            transition: box-shadow .25s ease;
        }
        .match-row:hover {
            box-shadow: var(--shadow-card-hover);
        }
        .match-row .match-info {
            flex: 1;
            min-width: 180px;
        }
        .match-row .match-teams {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 4px;
        }
        .match-row .match-league {
            font-size: 13px;
            color: var(--text-muted);
        }
        .match-row .match-time {
            font-size: 13px;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .match-row .match-badge {
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: var(--radius-tag);
            white-space: nowrap;
        }
        .match-badge.live {
            background: rgba(15,163,163,.1);
            color: var(--accent);
        }
        .match-badge.upcoming {
            background: var(--primary-soft);
            color: var(--primary);
        }
        .match-badge.hot {
            background: rgba(240,140,0,.1);
            color: var(--warning);
        }

        /* Model Card */
        .model-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 24px 26px;
            box-shadow: var(--shadow-card);
            height: 100%;
        }
        .model-card .model-icon {
            width: 42px;
            height: 42px;
            border-radius: 8px;
            background: var(--primary-soft);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            margin-bottom: 14px;
        }
        .model-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            margin: 0 0 8px 0;
        }
        .model-card p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.75;
        }

        /* Expert Tips */
        .tip-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .tip-item {
            display: flex;
            gap: 14px;
            align-items: flex-start;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 18px 20px;
            box-shadow: var(--shadow-card);
            transition: box-shadow .25s ease;
        }
        .tip-item:hover {
            box-shadow: var(--shadow-card-hover);
        }
        .tip-item .tip-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary-soft);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            flex-shrink: 0;
            margin-top: 2px;
        }
        .tip-item .tip-content {
            flex: 1;
        }
        .tip-item .tip-text {
            font-size: 14px;
            color: var(--text-main);
            line-height: 1.75;
            margin: 0;
        }
        .tip-item .tip-source {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* Subscribe Section */
        .subscribe-wrap {
            background: var(--dark-bg);
            border-radius: var(--radius-card);
            padding: 40px 36px;
            color: #E6EDF5;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }
        .subscribe-wrap .subscribe-text h2 {
            font-size: 22px;
            font-weight: 600;
            margin: 0 0 8px 0;
            color: #fff;
            letter-spacing: -0.3px;
        }
        .subscribe-wrap .subscribe-text p {
            font-size: 14px;
            color: #B8C7D9;
            margin: 0;
            max-width: 420px;
            line-height: 1.75;
        }
        .subscribe-wrap .subscribe-action {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }
        .subscribe-wrap .subscribe-input {
            padding: 10px 16px;
            border-radius: var(--radius-btn);
            border: 1px solid rgba(255,255,255,.2);
            background: rgba(255,255,255,.08);
            color: #fff;
            font-size: 14px;
            min-width: 220px;
            transition: border-color .2s ease;
        }
        .subscribe-wrap .subscribe-input::placeholder {
            color: #8FA0B3;
        }
        .subscribe-wrap .subscribe-input:focus {
            outline: none;
            border-color: var(--primary);
        }
        .subscribe-wrap .btn-primary {
            background: #fff;
            color: var(--dark-bg);
            border-color: #fff;
        }
        .subscribe-wrap .btn-primary:hover {
            background: var(--primary-soft);
            border-color: var(--primary-soft);
            color: var(--primary);
        }

        /* Footer */
        .site-footer {
            background: var(--dark-bg);
            color: #B8C7D9;
            padding: 52px 0 28px;
            margin-top: 0;
        }
        .site-footer .footer-title {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin: 0 0 14px 0;
            letter-spacing: -0.2px;
        }
        .site-footer p {
            font-size: 14px;
            color: #B8C7D9;
            line-height: 1.75;
            margin: 0;
        }
        .site-footer .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .site-footer .footer-links a {
            font-size: 14px;
            color: #B8C7D9;
            transition: color .2s ease;
        }
        .site-footer .footer-links a:hover {
            color: #fff;
        }
        .site-footer .footer-divider {
            border-top: 1px solid rgba(255,255,255,.1);
            margin: 32px 0 20px;
        }
        .site-footer .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 13px;
            color: #8FA0B3;
        }
        .site-footer .footer-bottom a {
            color: #8FA0B3;
        }
        .site-footer .footer-bottom a:hover {
            color: #fff;
        }

        /* Mobile nav */
        @media (max-width: 1023px) {
            .nav-menu {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--card-bg);
                border-bottom: 1px solid var(--border);
                flex-direction: column;
                align-items: flex-start;
                padding: 12px 16px;
                box-shadow: 0 12px 32px rgba(14,60,110,.1);
                gap: 2px;
                z-index: 99;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu > li {
                width: 100%;
            }
            .nav-menu > li > a {
                padding: 12px 16px;
                display: block;
                width: 100%;
                border-radius: var(--radius-btn);
            }
            .nav-actions {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
        }
        @media (min-width: 1024px) {
            .nav-toggle {
                display: none;
            }
            .nav-menu {
                display: flex;
            }
        }

        /* Responsive grid */
        @media (max-width: 639px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            section {
                padding: var(--space-section-mobile) 0;
            }
            .card-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .card-img {
                height: 150px;
            }
            .match-row {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }
            .subscribe-wrap {
                flex-direction: column;
                align-items: flex-start;
                padding: 28px 22px;
            }
            .subscribe-wrap .subscribe-input {
                min-width: 100%;
                width: 100%;
            }
            .subscribe-wrap .subscribe-action {
                width: 100%;
                flex-direction: column;
            }
            .subscribe-wrap .btn-primary {
                width: 100%;
            }
            .page-header .page-title {
                font-size: 24px;
            }
            .toolbar {
                flex-direction: column;
                align-items: flex-start;
            }
        }
        @media (min-width: 640px) and (max-width: 1023px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .card-img {
                height: 160px;
            }
            .subscribe-wrap {
                flex-direction: column;
                align-items: flex-start;
            }
            .subscribe-wrap .subscribe-action {
                width: 100%;
            }
            .subscribe-wrap .subscribe-input {
                flex: 1;
                min-width: auto;
            }
        }
        @media (min-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 26px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #1F6ED4;
            --primary-hover: #1859B0;
            --primary-soft: #EDF4FB;
            --accent: #0FA3A3;
            --warning: #F08C00;
            --bg: #F6F9FC;
            --card-bg: #FFFFFF;
            --dark-bg: #10243E;
            --text-main: #1A2433;
            --text-secondary: #5A6B7F;
            --text-muted: #8FA0B3;
            --border: #E4EBF2;
            --radius-card: 10px;
            --radius-btn: 6px;
            --radius-tag: 4px;
            --shadow-card: 0 1px 2px rgba(0,0,0,.03), 0 8px 24px rgba(14,60,110,.06);
            --shadow-card-hover: 0 8px 16px rgba(14,60,110,.08), 0 16px 40px rgba(14,60,110,.12);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
            --space-section: 72px;
            --space-section-mobile: 40px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-main);
            background-color: var(--bg);
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .2s ease;
        }
        a:hover,
        a:focus {
            color: var(--primary-hover);
            text-decoration: none;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        button,
        input,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (max-width: 640px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }
        section {
            padding: var(--space-section) 0;
        }
        @media (max-width: 640px) {
            section {
                padding: var(--space-section-mobile) 0;
            }
        }
        .section-alt {
            background-color: var(--card-bg);
        }
        .section-dark {
            background-color: var(--dark-bg);
            color: #E6EDF5;
        }
        .section-soft {
            background-color: var(--primary-soft);
        }
        .section-title {
            font-size: 24px;
            font-weight: 600;
            line-height: 1.4;
            color: var(--text-main);
            margin: 0 0 12px 0;
            letter-spacing: -0.3px;
        }
        .section-subtitle {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0 0 36px 0;
            max-width: 720px;
        }
        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 500;
            color: var(--primary);
            background: var(--primary-soft);
            padding: 4px 12px;
            border-radius: var(--radius-tag);
            margin-bottom: 10px;
            letter-spacing: 0.3px;
        }
        .text-center {
            text-align: center;
        }
        .text-center .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        /* Header / Navigation */
        .site-header {
            background: var(--card-bg);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 1px 4px rgba(14,60,110,.04);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 64px;
            flex-wrap: nowrap;
            gap: 16px;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            flex-shrink: 0;
        }
        .nav-logo:hover {
            color: var(--primary);
        }
        .nav-logo-icon {
            width: 34px;
            height: 34px;
            background: var(--primary);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .nav-logo span {
            letter-spacing: -0.3px;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-menu>li {
            position: relative;
        }
        .nav-menu>li>a {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 8px 14px;
            border-radius: var(--radius-btn);
            transition: all .2s ease;
            white-space: nowrap;
        }
        .nav-menu>li>a:hover {
            color: var(--primary);
            background: var(--primary-soft);
        }
        .nav-menu>li>a.active {
            color: var(--primary);
            background: var(--primary-soft);
            font-weight: 600;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            width: 40px;
            height: 40px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--text-main);
            transition: all .2s ease;
        }
        .nav-toggle:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 7px;
            font-size: 14px;
            font-weight: 500;
            padding: 10px 20px;
            border-radius: var(--radius-btn);
            border: none;
            cursor: pointer;
            transition: all .25s ease;
            white-space: nowrap;
            line-height: 1.4;
            min-height: 40px;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(31,110,212,.25);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
        }
        .btn-outline:hover {
            border-color: var(--primary-hover);
            background: var(--primary-soft);
            color: var(--primary-hover);
            transform: translateY(-1px);
        }
        .btn-outline:active {
            transform: translateY(0);
        }
        .btn-sm {
            padding: 7px 14px;
            font-size: 13px;
            min-height: 32px;
        }
        .btn-lg {
            padding: 14px 28px;
            font-size: 16px;
            min-height: 48px;
        }
        .btn-block {
            display: flex;
            width: 100%;
        }
        @media (max-width: 1024px) {
            .nav-actions {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-menu {
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--card-bg);
                flex-direction: column;
                align-items: stretch;
                gap: 0;
                padding: 16px 24px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 12px 32px rgba(14,60,110,.08);
                display: none;
                z-index: 99;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu>li>a {
                padding: 14px 10px;
                font-size: 15px;
                border-bottom: 1px solid var(--border);
                border-radius: 0;
            }
            .nav-menu>li:last-child>a {
                border-bottom: none;
            }
            .nav-menu>li>a.active {
                background: transparent;
                color: var(--primary);
            }
        }
        @media (max-width: 520px) {
            .site-header .container {
                min-height: 56px;
            }
            .nav-logo {
                font-size: 16px;
                gap: 8px;
            }
            .nav-logo-icon {
                width: 30px;
                height: 30px;
                font-size: 13px;
                border-radius: 7px;
            }
            .nav-toggle {
                width: 36px;
                height: 36px;
                font-size: 16px;
            }
            .nav-menu {
                top: 56px;
                padding: 12px 16px;
            }
            .nav-menu>li>a {
                padding: 12px 8px;
                font-size: 14px;
            }
        }

        /* Breadcrumb */
        .breadcrumb-wrap {
            padding: 20px 0 0 0;
            background: var(--bg);
        }
        .breadcrumb {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .breadcrumb li+li::before {
            content: "›";
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1;
        }
        .breadcrumb a {
            color: var(--text-secondary);
            transition: color .2s ease;
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .current {
            color: var(--text-main);
            font-weight: 500;
        }

        /* Category Hero */
        .cat-hero {
            background: var(--bg);
            padding: 28px 0 36px 0;
        }
        .cat-hero h1 {
            font-size: 32px;
            font-weight: 700;
            letter-spacing: -0.5px;
            line-height: 1.35;
            color: var(--text-main);
            margin: 6px 0 12px 0;
        }
        .cat-hero .cat-desc {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.85;
            max-width: 860px;
            margin: 0 0 24px 0;
        }
        @media (max-width: 640px) {
            .cat-hero {
                padding: 20px 0 28px 0;
            }
            .cat-hero h1 {
                font-size: 26px;
            }
            .cat-hero .cat-desc {
                font-size: 14px;
            }
        }

        /* Filter Toolbar */
        .filter-bar {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 16px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            box-shadow: var(--shadow-card);
        }
        .filter-group {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .filter-label {
            font-size: 13px;
            color: var(--text-muted);
            font-weight: 500;
            margin-right: 4px;
        }
        .filter-select {
            padding: 8px 36px 8px 14px;
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            font-size: 14px;
            color: var(--text-main);
            background: #fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%235A6B7F' fill='none' stroke-width='1.5'/%3E%3C/svg%3E") no-repeat right 12px center;
            appearance: none;
            -webkit-appearance: none;
            cursor: pointer;
            transition: border-color .2s ease;
            min-width: 140px;
        }
        .filter-select:hover,
        .filter-select:focus {
            border-color: var(--primary);
        }
        .filter-btns {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
        }
        .filter-btn {
            padding: 8px 16px;
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            background: #fff;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-secondary);
            cursor: pointer;
            transition: all .2s ease;
            white-space: nowrap;
        }
        .filter-btn:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-soft);
        }
        .filter-btn.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        @media (max-width: 640px) {
            .filter-bar {
                padding: 12px 14px;
                flex-direction: column;
                align-items: stretch;
            }
            .filter-group {
                width: 100%;
                justify-content: flex-start;
            }
            .filter-select {
                flex: 1;
                min-width: 0;
            }
            .filter-btns {
                width: 100%;
                overflow-x: auto;
                flex-wrap: nowrap;
                padding-bottom: 4px;
            }
            .filter-btn {
                flex-shrink: 0;
            }
        }

        /* Score List */
        .score-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-top: 4px;
        }
        .score-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            box-shadow: var(--shadow-card);
            transition: all .25s ease;
        }
        .score-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: #D4E0F0;
            transform: translateY(-1px);
        }
        .score-league {
            flex-shrink: 0;
            min-width: 70px;
            text-align: center;
        }
        .score-league .league-name {
            font-size: 12px;
            font-weight: 600;
            color: var(--text-secondary);
            background: var(--primary-soft);
            border-radius: var(--radius-tag);
            padding: 3px 8px;
            display: inline-block;
            white-space: nowrap;
        }
        .score-body {
            flex: 1;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }
        .score-team {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            min-width: 120px;
            text-align: right;
        }
        .score-team.away {
            text-align: left;
        }
        .score-value {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 2px;
            font-variant-numeric: tabular-nums;
            min-width: 64px;
            text-align: center;
        }
        .score-status {
            flex-shrink: 0;
            min-width: 80px;
            text-align: center;
        }
        .status-badge {
            font-size: 12px;
            font-weight: 500;
            padding: 4px 10px;
            border-radius: var(--radius-tag);
            display: inline-block;
            white-space: nowrap;
        }
        .status-live {
            background: #E8F7F7;
            color: var(--accent);
        }
        .status-live .live-dot {
            display: inline-block;
            width: 6px;
            height: 6px;
            background: var(--accent);
            border-radius: 50%;
            margin-right: 4px;
            animation: pulse 1.5s infinite;
        }
        @keyframes pulse {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }
        .status-finished {
            background: #F0F3F7;
            color: var(--text-muted);
        }
        .status-halftime {
            background: #FFF4E6;
            color: var(--warning);
        }
        .status-upcoming {
            background: var(--primary-soft);
            color: var(--primary);
        }
        .score-time {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 2px;
        }
        @media (max-width: 640px) {
            .score-card {
                padding: 14px 16px;
                flex-wrap: wrap;
                gap: 8px;
            }
            .score-body {
                gap: 12px;
                flex-wrap: nowrap;
                width: 100%;
                justify-content: space-between;
            }
            .score-team {
                min-width: 0;
                font-size: 14px;
                flex: 1;
            }
            .score-value {
                font-size: 24px;
                min-width: 52px;
            }
            .score-league {
                min-width: 0;
            }
            .score-status {
                min-width: 0;
            }
        }

        /* League Filter Strip */
        .league-strip {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            align-items: center;
        }
        .league-chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 18px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-secondary);
            cursor: pointer;
            transition: all .2s ease;
            white-space: nowrap;
        }
        .league-chip:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-soft);
        }
        .league-chip.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .league-chip .chip-count {
            font-size: 11px;
            background: rgba(0,0,0,.08);
            border-radius: 10px;
            padding: 1px 7px;
        }
        .league-chip.active .chip-count {
            background: rgba(255,255,255,.2);
        }

        /* Trend Cards */
        .trend-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .trend-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 22px 20px;
            box-shadow: var(--shadow-card);
            transition: all .25s ease;
            position: relative;
            overflow: hidden;
        }
        .trend-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .trend-card .trend-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 4px;
        }
        .trend-card .trend-desc {
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 14px;
        }
        .trend-chart {
            display: flex;
            align-items: flex-end;
            gap: 6px;
            height: 60px;
            margin-top: 8px;
        }
        .trend-chart .bar {
            flex: 1;
            background: var(--primary-soft);
            border-radius: 3px 3px 0 0;
            min-height: 8px;
            transition: background .2s ease;
            position: relative;
        }
        .trend-chart .bar.high {
            background: var(--primary);
        }
        .trend-chart .bar.accent {
            background: var(--accent);
        }
        .trend-chart .bar.warn {
            background: var(--warning);
        }
        .trend-chart .bar-value {
            position: absolute;
            top: -20px;
            left: 50%;
            transform: translateX(-50%);
            font-size: 10px;
            color: var(--text-muted);
            font-variant-numeric: tabular-nums;
        }
        @media (max-width: 1024px) {
            .trend-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .trend-grid {
                grid-template-columns: 1fr;
            }
        }

        /* Team Follow */
        .team-follow-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 14px;
        }
        .team-follow-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 16px 14px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all .25s ease;
            cursor: pointer;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
        }
        .team-follow-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--primary);
            transform: translateY(-2px);
        }
        .team-follow-card .team-badge {
            width: 46px;
            height: 46px;
            background: var(--primary-soft);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--primary);
            font-weight: 700;
        }
        .team-follow-card .team-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
        }
        .team-follow-card .team-meta {
            font-size: 12px;
            color: var(--text-muted);
        }
        .team-follow-card .follow-btn {
            margin-top: 4px;
            font-size: 12px;
            padding: 5px 16px;
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            background: #fff;
            color: var(--text-secondary);
            cursor: pointer;
            transition: all .2s ease;
        }
        .team-follow-card .follow-btn:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-soft);
        }
        @media (max-width: 1024px) {
            .team-follow-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 400px) {
            .team-follow-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
        }

        /* Score Info */
        .score-info-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .score-info-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 20px 22px;
            box-shadow: var(--shadow-card);
            display: flex;
            gap: 14px;
            align-items: flex-start;
        }
        .score-info-item .info-icon {
            width: 40px;
            height: 40px;
            background: var(--primary-soft);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 18px;
            flex-shrink: 0;
        }
        .score-info-item .info-content h3 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin: 0 0 6px 0;
        }
        .score-info-item .info-content p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
        }
        @media (max-width: 1024px) {
            .score-info-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 640px) {
            .score-info-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .score-info-item {
                padding: 16px 18px;
            }
        }

        /* View More */
        .view-more-wrap {
            text-align: center;
            margin-top: 24px;
        }
        .btn-view-more {
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
            padding: 10px 32px;
            font-size: 14px;
            font-weight: 500;
            border-radius: var(--radius-btn);
            cursor: pointer;
            transition: all .25s ease;
        }
        .btn-view-more:hover {
            background: var(--primary-soft);
            border-color: var(--primary-hover);
            color: var(--primary-hover);
            transform: translateY(-1px);
        }

        /* Featured Image Block */
        .featured-img-wrap {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            position: relative;
        }
        .featured-img-wrap img {
            width: 100%;
            object-fit: cover;
            border-radius: var(--radius-card);
        }

        /* Footer */
        .site-footer {
            background: var(--dark-bg);
            color: #E6EDF5;
            padding: 56px 0 28px 0;
            margin-top: 0;
        }
        .site-footer .container {
            padding-top: 0;
            padding-bottom: 0;
        }
        .site-footer .footer-title {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
        }
        .site-footer p {
            font-size: 13px;
            color: #B8C5D4;
            line-height: 1.8;
            margin: 0 0 12px 0;
        }
        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links li a {
            font-size: 13px;
            color: #B8C5D4;
            transition: color .2s ease;
        }
        .footer-links li a:hover {
            color: #fff;
        }
        .footer-divider {
            border-top: 1px solid rgba(255,255,255,.12);
            margin: 28px 0 18px 0;
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            font-size: 12px;
            color: #8FA0B3;
        }
        .footer-bottom span {
            white-space: nowrap;
        }
        .footer-bottom a {
            color: #B8C5D4;
            font-size: 12px;
            transition: color .2s ease;
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        @media (max-width: 640px) {
            .site-footer {
                padding: 36px 0 20px 0;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
            .footer-bottom span {
                white-space: normal;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #1F6ED4;
            --primary-hover: #1859B0;
            --primary-soft: #EDF4FB;
            --accent: #0FA3A3;
            --warning: #F08C00;
            --bg: #F6F9FC;
            --card-bg: #FFFFFF;
            --dark-bg: #10243E;
            --text-main: #1A2433;
            --text-secondary: #5A6B7F;
            --text-muted: #8FA0B3;
            --border: #E4EBF2;
            --radius-card: 10px;
            --radius-btn: 6px;
            --radius-tag: 4px;
            --shadow-card: 0 1px 2px rgba(0,0,0,.03), 0 8px 24px rgba(14,60,110,.06);
            --shadow-card-hover: 0 8px 16px rgba(14,60,110,.08), 0 16px 40px rgba(14,60,110,.12);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
            --space-section: 72px;
            --space-section-mobile: 40px;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-main);
            background-color: var(--bg);
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .2s ease;
        }

        a:hover,
        a:focus {
            color: var(--primary-hover);
            text-decoration: none;
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        button,
        input,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (max-width: 640px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        section {
            padding: var(--space-section) 0;
        }

        @media (max-width: 640px) {
            section {
                padding: var(--space-section-mobile) 0;
            }
        }

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

        .section-dark {
            background-color: var(--dark-bg);
            color: #E6EDF5;
        }

        .section-soft {
            background-color: var(--primary-soft);
        }

        .section-title {
            font-size: 24px;
            font-weight: 600;
            line-height: 1.4;
            color: var(--text-main);
            margin: 0 0 12px 0;
            letter-spacing: -0.3px;
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0 0 36px 0;
            max-width: 720px;
        }

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 500;
            color: var(--primary);
            background: var(--primary-soft);
            padding: 4px 12px;
            border-radius: var(--radius-tag);
            margin-bottom: 10px;
            letter-spacing: 0.3px;
        }

        .text-center {
            text-align: center;
        }

        .text-center .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        /* Header / Navigation */
        .site-header {
            background: var(--card-bg);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 1px 4px rgba(14,60,110,.04);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 64px;
            flex-wrap: nowrap;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            flex-shrink: 0;
        }

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

        .nav-logo-icon {
            width: 34px;
            height: 34px;
            background: var(--primary);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .nav-logo span {
            letter-spacing: -0.3px;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-menu>li {
            position: relative;
        }

        .nav-menu>li>a {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 8px 14px;
            border-radius: var(--radius-btn);
            transition: all .2s ease;
            white-space: nowrap;
        }

        .nav-menu>li>a:hover {
            color: var(--primary);
            background: var(--primary-soft);
        }

        .nav-menu>li>a.active {
            color: var(--primary);
            background: var(--primary-soft);
            font-weight: 600;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            width: 40px;
            height: 40px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            color: var(--text-main);
            font-size: 18px;
            flex-shrink: 0;
        }

        .btn {
            display: inline-block;
            font-size: 14px;
            font-weight: 500;
            border-radius: var(--radius-btn);
            padding: 10px 20px;
            cursor: pointer;
            text-align: center;
            border: 1px solid transparent;
            transition: all .2s ease;
            line-height: 1.5;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--primary-hover);
            border-color: var(--primary-hover);
            color: #fff;
        }

        .btn-secondary {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }

        .btn-secondary:hover,
        .btn-secondary:focus {
            background: var(--primary-soft);
            border-color: var(--primary-hover);
            color: var(--primary-hover);
        }

        .btn-sm {
            font-size: 13px;
            padding: 8px 16px;
        }

        .btn-block {
            display: block;
            width: 100%;
        }

        @media (max-width: 1024px) {
            .nav-menu {
                gap: 0;
            }
            .nav-menu>li>a {
                padding: 8px 10px;
                font-size: 13px;
            }
            .nav-actions .btn {
                padding: 8px 14px;
                font-size: 13px;
            }
        }

        @media (max-width: 860px) {
            .nav-toggle {
                display: flex;
            }
            .nav-menu {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--card-bg);
                flex-direction: column;
                align-items: stretch;
                padding: 12px 16px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 12px 24px rgba(14,60,110,.08);
                gap: 2px;
                z-index: 99;
            }
            .nav-menu.is-open {
                display: flex;
            }
            .nav-menu>li>a {
                padding: 12px 16px;
                font-size: 15px;
                border-radius: var(--radius-btn);
            }
            .nav-actions {
                display: none;
            }
            .nav-actions.is-open {
                display: flex;
                position: absolute;
                top: calc(64px + 320px);
                left: 0;
                right: 0;
                padding: 12px 16px 20px;
                background: var(--card-bg);
                border-bottom: 1px solid var(--border);
                gap: 10px;
                z-index: 98;
            }
            .nav-actions.is-open .btn {
                flex: 1;
            }
        }

        /* Breadcrumb */
        .breadcrumb {
            background: var(--card-bg);
            padding: 16px 0;
            border-bottom: 1px solid var(--border);
            margin-bottom: 0;
        }

        .breadcrumb .container {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--text-secondary);
        }

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

        .breadcrumb .separator {
            color: var(--text-muted);
            font-size: 11px;
        }

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

        /* Category Header */
        .category-header {
            background: var(--card-bg);
            padding: 40px 0 48px;
            border-bottom: 1px solid var(--border);
        }

        .category-header h1 {
            font-size: 32px;
            font-weight: 700;
            letter-spacing: -0.5px;
            color: var(--text-main);
            margin: 0 0 16px 0;
            line-height: 1.3;
        }

        .category-header .category-desc {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.9;
            max-width: 800px;
            margin: 0;
        }

        @media (max-width: 640px) {
            .category-header h1 {
                font-size: 26px;
            }
            .category-header {
                padding: 28px 0 32px;
            }
        }

        /* Tool Cards */
        .tool-card {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 28px 24px;
            height: 100%;
            transition: all .25s ease;
            border: 1px solid var(--border);
            display: flex;
            flex-direction: column;
        }

        .tool-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: var(--primary-soft);
        }

        .tool-card-icon {
            width: 48px;
            height: 48px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 16px;
            background: var(--primary-soft);
            color: var(--primary);
            flex-shrink: 0;
        }

        .tool-card-icon.accent {
            background: #E6F7F7;
            color: var(--accent);
        }

        .tool-card-icon.warning {
            background: #FEF3E5;
            color: var(--warning);
        }

        .tool-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            margin: 0 0 8px 0;
            line-height: 1.4;
        }

        .tool-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0 0 16px 0;
            flex-grow: 1;
        }

        .tool-card .tool-meta {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 12px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

        .tool-card .tool-meta .tag {
            display: inline-block;
            padding: 2px 8px;
            border-radius: var(--radius-tag);
            font-size: 11px;
            font-weight: 500;
            background: var(--primary-soft);
            color: var(--primary);
        }

        .tool-card .tool-meta .tag.accent-tag {
            background: #E6F7F7;
            color: var(--accent);
        }

        .tool-card .tool-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 13px;
            font-weight: 500;
            color: var(--primary);
            margin-top: 4px;
        }

        .tool-card .tool-link i {
            font-size: 12px;
            transition: transform .2s ease;
        }

        .tool-card .tool-link:hover i {
            transform: translateX(4px);
        }

        /* Steps */
        .step-item {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            padding: 0;
        }

        .step-number {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .step-number.accent-bg {
            background: var(--accent);
        }

        .step-number.warning-bg {
            background: var(--warning);
        }

        .step-number.dark-bg {
            background: var(--dark-bg);
        }

        .step-content h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            margin: 0 0 6px 0;
            line-height: 1.5;
        }

        .step-content p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0;
        }

        /* Data API Card */
        .api-card {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 28px 24px;
            height: 100%;
            border: 1px solid var(--border);
            transition: all .25s ease;
        }

        .api-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .api-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            margin: 0 0 12px 0;
            line-height: 1.5;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .api-card h3 i {
            color: var(--primary);
            font-size: 18px;
        }

        .api-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0 0 12px 0;
        }

        .api-card .data-point {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-secondary);
            padding: 6px 0;
            border-bottom: 1px solid var(--border);
        }

        .api-card .data-point:last-child {
            border-bottom: none;
        }

        .api-card .data-point i {
            color: var(--accent);
            font-size: 12px;
            width: 16px;
            text-align: center;
            flex-shrink: 0;
        }

        /* FAQ */
        .faq-item {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            margin-bottom: 16px;
            overflow: hidden;
            transition: all .25s ease;
        }

        .faq-item:hover {
            box-shadow: var(--shadow-card-hover);
        }

        .faq-question {
            padding: 18px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            user-select: none;
            gap: 12px;
        }

        .faq-question .faq-icon {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--primary-soft);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            flex-shrink: 0;
            transition: transform .25s ease;
        }

        .faq-item.is-open .faq-icon {
            transform: rotate(180deg);
            background: var(--primary);
            color: #fff;
        }

        .faq-answer {
            padding: 0 20px 20px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            display: none;
        }

        .faq-item.is-open .faq-answer {
            display: block;
        }

        /* Changelog */
        .changelog-entry {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            padding: 0 0 24px 0;
            border-left: 2px solid var(--border);
            margin-left: 12px;
            padding-left: 28px;
            position: relative;
        }

        .changelog-entry::before {
            content: '';
            position: absolute;
            left: -7px;
            top: 4px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--primary);
            border: 2px solid #fff;
            box-shadow: 0 0 0 2px var(--primary);
        }

        .changelog-entry:last-child {
            border-left-color: transparent;
        }

        .changelog-entry .changelog-date {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            flex-shrink: 0;
            min-width: 80px;
            padding-top: 2px;
        }

        .changelog-entry .changelog-content h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin: 0 0 6px 0;
            line-height: 1.5;
        }

        .changelog-entry .changelog-content p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0;
        }

        /* CTA banner */
        .cta-banner {
            background: var(--dark-bg);
            border-radius: var(--radius-card);
            padding: 40px 36px;
            color: #E6EDF5;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }

        .cta-banner h3 {
            font-size: 22px;
            font-weight: 600;
            color: #fff;
            margin: 0 0 8px 0;
            line-height: 1.4;
        }

        .cta-banner p {
            font-size: 14px;
            color: #B8C7D9;
            margin: 0;
            line-height: 1.7;
            max-width: 480px;
        }

        .cta-banner .btn {
            flex-shrink: 0;
        }

        @media (max-width: 640px) {
            .cta-banner {
                padding: 28px 20px;
                flex-direction: column;
                align-items: flex-start;
            }
        }

        /* Footer */
        .site-footer {
            background: var(--dark-bg);
            color: #B8C7D9;
            padding: 48px 0 24px;
            margin-top: 0;
            font-size: 14px;
        }

        .site-footer .footer-title {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }

        .site-footer p {
            color: #B8C7D9;
            line-height: 1.8;
            margin: 0 0 12px 0;
            font-size: 13px;
        }

        .site-footer .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .site-footer .footer-links li {
            margin-bottom: 8px;
        }

        .site-footer .footer-links a {
            color: #B8C7D9;
            font-size: 13px;
            transition: color .2s ease;
        }

        .site-footer .footer-links a:hover {
            color: #fff;
        }

        .footer-divider {
            border-top: 1px solid rgba(255,255,255,.1);
            margin: 32px 0 20px;
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: 8px 20px;
            align-items: center;
            font-size: 12px;
            color: #8FA0B3;
        }

        .footer-bottom a {
            color: #8FA0B3;
        }

        .footer-bottom a:hover {
            color: #fff;
        }

        .footer-bottom span {
            white-space: nowrap;
        }

        @media (max-width: 640px) {
            .site-footer {
                padding: 32px 0 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 4px;
            }
        }

        /* Additional category-specific */
        .filter-bar {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            margin-bottom: 28px;
        }

        .filter-bar .filter-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: var(--radius-btn);
            border: 1px solid var(--border);
            background: var(--card-bg);
            color: var(--text-secondary);
            font-size: 13px;
            cursor: pointer;
            transition: all .2s ease;
        }

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

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

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

        .tool-img {
            border-radius: 8px;
            overflow: hidden;
            margin-bottom: 16px;
            aspect-ratio: 16/9;
            background: var(--primary-soft);
        }

        .tool-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .grid-gap {
            gap: 20px;
        }

        .margin-bottom-24 {
            margin-bottom: 24px;
        }

        .margin-bottom-32 {
            margin-bottom: 32px;
        }

        .margin-top-12 {
            margin-top: 12px;
        }

/* roulang page: category4 */
:root {
            --primary: #1F6ED4;
            --primary-hover: #1859B0;
            --primary-soft: #EDF4FB;
            --accent: #0FA3A3;
            --warning: #F08C00;
            --bg: #F6F9FC;
            --card-bg: #FFFFFF;
            --dark-bg: #10243E;
            --text-main: #1A2433;
            --text-secondary: #5A6B7F;
            --text-muted: #8FA0B3;
            --border: #E4EBF2;
            --radius-card: 10px;
            --radius-btn: 6px;
            --radius-tag: 4px;
            --shadow-card: 0 1px 2px rgba(0,0,0,.03), 0 8px 24px rgba(14,60,110,.06);
            --shadow-card-hover: 0 8px 16px rgba(14,60,110,.08), 0 16px 40px rgba(14,60,110,.12);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
            --space-section: 64px;
            --space-section-mobile: 36px;
        }

        * {
            box-sizing: border-box;
        }

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

        body {
            font-family: var(--font-sans);
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-main);
            background-color: var(--bg);
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .2s ease;
        }

        a:hover,
        a:focus {
            color: var(--primary-hover);
            text-decoration: none;
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (max-width: 639px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        section {
            padding: var(--space-section) 0;
        }

        @media (max-width: 639px) {
            section {
                padding: var(--space-section-mobile) 0;
            }
        }

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

        .section-dark {
            background-color: var(--dark-bg);
            color: #E6EDF5;
        }

        .section-soft {
            background-color: var(--primary-soft);
        }

        .section-title {
            font-size: 24px;
            font-weight: 600;
            line-height: 1.4;
            color: var(--text-main);
            margin: 0 0 12px 0;
            letter-spacing: -0.3px;
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0 0 36px 0;
            max-width: 720px;
        }

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 500;
            color: var(--primary);
            background: var(--primary-soft);
            padding: 4px 12px;
            border-radius: var(--radius-tag);
            margin-bottom: 10px;
            letter-spacing: 0.3px;
        }

        .text-center {
            text-align: center;
        }

        .text-center .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        /* Header / Navigation */
        .site-header {
            background: var(--card-bg);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 1px 4px rgba(14,60,110,.04);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 64px;
            flex-wrap: nowrap;
            gap: 12px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            flex-shrink: 0;
        }

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

        .nav-logo-icon {
            width: 34px;
            height: 34px;
            background: var(--primary);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .nav-logo span {
            letter-spacing: -0.3px;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-menu>li {
            position: relative;
        }

        .nav-menu>li>a {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 8px 14px;
            border-radius: var(--radius-btn);
            transition: all .2s ease;
            white-space: nowrap;
        }

        .nav-menu>li>a:hover {
            color: var(--primary);
            background: var(--primary-soft);
        }

        .nav-menu>li>a.active {
            color: var(--primary);
            background: var(--primary-soft);
            font-weight: 600;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 500;
            padding: 9px 18px;
            border-radius: var(--radius-btn);
            border: 1px solid transparent;
            cursor: pointer;
            transition: all .2s ease;
            white-space: nowrap;
            line-height: 1.5;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        .btn-primary:hover {
            background: var(--primary-hover);
            border-color: var(--primary-hover);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(14,60,110,.18);
        }

        .btn-secondary {
            background: transparent;
            color: var(--primary);
            border-color: var(--border);
        }

        .btn-secondary:hover {
            background: var(--primary-soft);
            border-color: var(--primary);
            color: var(--primary);
        }

        .btn-sm {
            padding: 6px 14px;
            font-size: 13px;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            width: 40px;
            height: 40px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            font-size: 18px;
            flex-shrink: 0;
            transition: all .2s ease;
        }

        .nav-toggle:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        @media (max-width: 1023px) {
            .nav-menu {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--card-bg);
                flex-direction: column;
                align-items: stretch;
                gap: 0;
                padding: 12px 16px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 12px 32px rgba(14,60,110,.1);
                z-index: 99;
            }

            .nav-menu.is-open {
                display: flex;
            }

            .nav-menu>li>a {
                padding: 12px 16px;
                font-size: 15px;
                border-radius: var(--radius-btn);
            }

            .nav-toggle {
                display: inline-flex;
            }

            .nav-actions {
                margin-left: auto;
            }

            .nav-actions .btn {
                padding: 7px 12px;
                font-size: 13px;
            }
        }

        @media (max-width: 639px) {
            .site-header .container {
                min-height: 56px;
                gap: 8px;
            }

            .nav-logo {
                font-size: 16px;
                gap: 6px;
            }

            .nav-logo-icon {
                width: 30px;
                height: 30px;
                font-size: 13px;
            }

            .nav-actions .btn {
                padding: 6px 10px;
                font-size: 12px;
                gap: 4px;
            }

            .nav-actions .btn-secondary {
                display: none;
            }

            .nav-menu {
                top: 56px;
            }
        }

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

        .breadcrumb-bar .breadcrumb {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

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

        .breadcrumb li+li::before {
            content: '/';
            color: var(--text-muted);
            font-size: 12px;
        }

        .breadcrumb a {
            color: var(--text-secondary);
            transition: color .2s ease;
        }

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

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

        /* Category Hero */
        .category-hero {
            padding: 48px 0 32px;
            background: var(--card-bg);
            border-bottom: 1px solid var(--border);
        }

        .category-hero h1 {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-main);
            margin: 0 0 14px 0;
            letter-spacing: -0.5px;
            line-height: 1.3;
        }

        .category-hero .hero-desc {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 820px;
            margin: 0 0 20px 0;
        }

        .filter-toolbar {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            padding-top: 16px;
            border-top: 1px solid var(--border);
        }

        .filter-toolbar .filter-label {
            font-size: 13px;
            color: var(--text-muted);
            font-weight: 500;
        }

        .filter-chip {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 13px;
            padding: 5px 12px;
            border-radius: 20px;
            border: 1px solid var(--border);
            background: var(--card-bg);
            color: var(--text-secondary);
            transition: all .2s ease;
            white-space: nowrap;
        }

        .filter-chip:hover,
        .filter-chip.active {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-soft);
        }

        .filter-chip.active {
            font-weight: 600;
        }

        /* Cards */
        .card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: all .25s ease;
            overflow: hidden;
            height: 100%;
        }

        .card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .card-img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            background: var(--primary-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 32px;
            color: var(--primary);
        }

        .card-body {
            padding: 18px 20px;
        }

        .card-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            margin: 0 0 8px 0;
            line-height: 1.5;
        }

        .card-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin: 0 0 14px 0;
        }

        .card-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 12px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

        .tag {
            display: inline-block;
            font-size: 12px;
            padding: 2px 8px;
            border-radius: var(--radius-tag);
            background: var(--primary-soft);
            color: var(--primary);
            font-weight: 500;
            white-space: nowrap;
        }

        .tag-accent {
            background: rgba(15,163,163,.1);
            color: var(--accent);
        }

        .tag-warning {
            background: rgba(240,140,0,.1);
            color: var(--warning);
        }

        /* Expert Card */
        .expert-card {
            display: flex;
            flex-direction: column;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: all .25s ease;
            overflow: hidden;
            height: 100%;
        }

        .expert-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .expert-avatar {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary-soft), #D8E7F7);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            color: var(--primary);
            font-weight: 700;
            flex-shrink: 0;
            margin-bottom: 14px;
        }

        .expert-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .expert-name {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            margin: 0 0 4px 0;
        }

        .expert-role {
            font-size: 13px;
            color: var(--primary);
            font-weight: 500;
            margin: 0 0 10px 0;
        }

        .expert-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0 0 14px 0;
            flex: 1;
        }

        .expert-stats {
            display: flex;
            gap: 16px;
            font-size: 12px;
            color: var(--text-muted);
            padding-top: 12px;
            border-top: 1px solid var(--border);
        }

        .expert-stats span {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .expert-stats i {
            color: var(--accent);
        }

        /* Article row */
        .article-row {
            display: flex;
            gap: 16px;
            align-items: flex-start;
            padding: 16px 0;
            border-bottom: 1px solid var(--border);
            transition: all .2s ease;
        }

        .article-row:last-child {
            border-bottom: none;
        }

        .article-row:hover {
            background: var(--primary-soft);
            border-radius: 6px;
            padding-left: 12px;
            padding-right: 12px;
        }

        .article-row-img {
            width: 100px;
            height: 66px;
            border-radius: 6px;
            object-fit: cover;
            flex-shrink: 0;
            background: var(--primary-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 20px;
        }

        .article-row-content {
            flex: 1;
            min-width: 0;
        }

        .article-row-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            margin: 0 0 4px 0;
            line-height: 1.5;
        }

        .article-row-summary {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin: 0 0 6px 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-row-meta {
            display: flex;
            gap: 10px;
            font-size: 12px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

        /* Subscribe Box */
        .subscribe-box {
            background: var(--dark-bg);
            border-radius: var(--radius-card);
            padding: 32px 28px;
            color: #E6EDF5;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 20px;
            justify-content: space-between;
        }

        .subscribe-box h3 {
            font-size: 20px;
            font-weight: 600;
            color: #fff;
            margin: 0 0 6px 0;
        }

        .subscribe-box p {
            font-size: 14px;
            color: #B8C7D9;
            margin: 0;
            line-height: 1.7;
        }

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

        .subscribe-form input {
            flex: 1;
            min-width: 200px;
            padding: 10px 14px;
            border-radius: var(--radius-btn);
            border: 1px solid rgba(255,255,255,.2);
            background: rgba(255,255,255,.08);
            color: #fff;
            font-size: 14px;
            transition: all .2s ease;
        }

        .subscribe-form input::placeholder {
            color: #8FA0B3;
        }

        .subscribe-form input:focus {
            border-color: var(--primary);
            background: rgba(255,255,255,.12);
            outline: none;
            box-shadow: 0 0 0 3px rgba(31,110,212,.25);
        }

        /* Steps */
        .step-list {
            counter-reset: step;
            list-style: none;
            margin: 0;
            padding: 0;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 16px;
        }

        .step-item {
            counter-increment: step;
            position: relative;
            padding: 20px 20px 20px 56px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: all .25s ease;
        }

        .step-item:hover {
            box-shadow: var(--shadow-card-hover);
        }

        .step-item::before {
            content: counter(step);
            position: absolute;
            left: 16px;
            top: 20px;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 13px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .step-item h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin: 0 0 6px 0;
        }

        .step-item p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
        }

        /* Footer */
        .site-footer {
            background: var(--dark-bg);
            color: #E6EDF5;
            padding: 48px 0 24px;
            margin-top: 0;
        }

        .site-footer .container {
            max-width: 1200px;
        }

        .footer-title {
            font-size: 18px;
            font-weight: 600;
            color: #fff;
            margin: 0 0 14px 0;
        }

        .site-footer p {
            font-size: 13px;
            color: #B8C7D9;
            line-height: 1.7;
            margin: 0 0 12px 0;
        }

        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .footer-links li {
            margin-bottom: 8px;
        }

        .footer-links a {
            font-size: 13px;
            color: #B8C7D9;
            transition: color .2s ease;
        }

        .footer-links a:hover {
            color: #fff;
        }

        .footer-divider {
            border-top: 1px solid rgba(255,255,255,.1);
            margin: 28px 0 18px;
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: 10px 20px;
            font-size: 12px;
            color: #8FA0B3;
            align-items: center;
            justify-content: space-between;
        }

        .footer-bottom a {
            color: #B8C7D9;
            font-size: 12px;
        }

        .footer-bottom a:hover {
            color: #fff;
        }

        /* Misc */
        .grid-gap {
            gap: 20px;
        }

        .mb-0 {
            margin-bottom: 0;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }

        .avatar-placeholder {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary-soft), #D8E7F7);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            color: var(--primary);
            font-weight: 700;
        }

        .divider {
            border-top: 1px solid var(--border);
            margin: 24px 0;
        }

        .view-more-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            transition: all .2s ease;
        }

        .view-more-link:hover {
            color: var(--primary-hover);
            gap: 10px;
        }

        @media (max-width: 639px) {
            .category-hero h1 {
                font-size: 24px;
            }

            .subscribe-box {
                padding: 24px 18px;
                flex-direction: column;
                text-align: left;
            }

            .subscribe-form {
                width: 100%;
                flex-direction: column;
                align-items: stretch;
            }

            .subscribe-form input {
                min-width: auto;
                width: 100%;
            }

            .expert-avatar {
                margin-bottom: 10px;
            }

            .expert-body {
                padding: 16px;
            }

            .article-row {
                flex-direction: column;
                gap: 10px;
            }

            .article-row-img {
                width: 100%;
                height: auto;
                aspect-ratio: 16/9;
            }

            .footer-bottom {
                flex-direction: column;
                gap: 6px;
                align-items: flex-start;
            }
        }

        @media (min-width: 640px) and (max-width: 1023px) {
            .category-hero h1 {
                font-size: 26px;
            }
        }

/* roulang page: category5 */
:root {
            --primary: #1F6ED4;
            --primary-hover: #1859B0;
            --primary-soft: #EDF4FB;
            --accent: #0FA3A3;
            --warning: #F08C00;
            --bg: #F6F9FC;
            --card-bg: #FFFFFF;
            --dark-bg: #10243E;
            --text-main: #1A2433;
            --text-secondary: #5A6B7F;
            --text-muted: #8FA0B3;
            --border: #E4EBF2;
            --radius-card: 10px;
            --radius-btn: 6px;
            --radius-tag: 4px;
            --shadow-card: 0 1px 2px rgba(0,0,0,.03), 0 8px 24px rgba(14,60,110,.06);
            --shadow-card-hover: 0 8px 16px rgba(14,60,110,.08), 0 16px 40px rgba(14,60,110,.12);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
            --space-section: 72px;
            --space-section-mobile: 40px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-main);
            background-color: var(--bg);
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .2s ease;
        }
        a:hover,
        a:focus {
            color: var(--primary-hover);
            text-decoration: none;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        button,
        input,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (max-width: 640px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }
        section {
            padding: var(--space-section) 0;
        }
        @media (max-width: 640px) {
            section {
                padding: var(--space-section-mobile) 0;
            }
        }
        .section-alt {
            background-color: var(--card-bg);
        }
        .section-soft {
            background-color: var(--primary-soft);
        }
        .section-title {
            font-size: 24px;
            font-weight: 600;
            line-height: 1.4;
            color: var(--text-main);
            margin: 0 0 12px 0;
            letter-spacing: -0.3px;
        }
        .section-subtitle {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0 0 36px 0;
            max-width: 720px;
        }
        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 500;
            color: var(--primary);
            background: var(--primary-soft);
            padding: 4px 12px;
            border-radius: var(--radius-tag);
            margin-bottom: 10px;
            letter-spacing: 0.3px;
        }
        .text-center {
            text-align: center;
        }
        .text-center .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        /* Header / Navigation */
        .site-header {
            background: var(--card-bg);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 1px 4px rgba(14,60,110,.04);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 64px;
            flex-wrap: nowrap;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            flex-shrink: 0;
        }
        .nav-logo:hover {
            color: var(--primary);
        }
        .nav-logo-icon {
            width: 34px;
            height: 34px;
            background: var(--primary);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .nav-logo span {
            letter-spacing: -0.3px;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-menu > li {
            position: relative;
        }
        .nav-menu > li > a {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 8px 14px;
            border-radius: var(--radius-btn);
            transition: all .2s ease;
            white-space: nowrap;
        }
        .nav-menu > li > a:hover {
            color: var(--primary);
            background: var(--primary-soft);
        }
        .nav-menu > li > a.active {
            color: var(--primary);
            background: var(--primary-soft);
            font-weight: 600;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            width: 40px;
            height: 40px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            font-size: 18px;
            flex-shrink: 0;
        }
        @media (max-width: 1024px) {
            .nav-menu {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--card-bg);
                flex-direction: column;
                align-items: stretch;
                gap: 0;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 12px 30px rgba(14,60,110,.12);
                padding: 12px 16px;
            }
            .nav-menu.is-open {
                display: flex;
            }
            .nav-menu > li > a {
                padding: 12px 16px;
                border-radius: var(--radius-btn);
                font-size: 15px;
            }
            .nav-actions {
                margin-left: auto;
            }
            .nav-toggle {
                display: flex;
            }
        }
        @media (max-width: 640px) {
            .site-header .container {
                min-height: 56px;
            }
            .nav-logo {
                font-size: 16px;
                gap: 8px;
            }
            .nav-logo-icon {
                width: 30px;
                height: 30px;
                font-size: 13px;
                border-radius: 6px;
            }
            .nav-menu {
                top: 56px;
            }
            .nav-actions .btn {
                padding: 8px 12px;
                font-size: 13px;
            }
            .nav-actions .btn-secondary {
                display: none;
            }
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 20px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 500;
            line-height: 1.4;
            border: 1px solid transparent;
            cursor: pointer;
            transition: all .25s ease;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            color: #fff;
            box-shadow: 0 4px 12px rgba(31,110,212,.25);
        }
        .btn-secondary {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-secondary:hover {
            background: rgba(31,110,212,.05);
            border-color: var(--primary);
            color: var(--primary);
        }
        .btn-sm {
            padding: 7px 14px;
            font-size: 13px;
        }
        .btn-lg {
            padding: 12px 28px;
            font-size: 15px;
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 12px;
            list-style: none;
            padding: 0;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .breadcrumb li + li::before {
            content: "/";
            color: var(--text-muted);
            font-size: 12px;
        }
        .breadcrumb a {
            color: var(--text-secondary);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .current {
            color: var(--text-main);
            font-weight: 500;
        }

        /* Category Hero */
        .cat-hero {
            padding: 36px 0 24px;
            background: var(--card-bg);
            border-bottom: 1px solid var(--border);
        }
        .cat-hero h1 {
            font-size: 32px;
            font-weight: 700;
            letter-spacing: -0.5px;
            color: var(--text-main);
            margin: 0 0 12px;
            line-height: 1.3;
        }
        .cat-hero .cat-desc {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.9;
            max-width: 860px;
            margin: 0;
        }
        @media (max-width: 640px) {
            .cat-hero h1 {
                font-size: 26px;
            }
        }

        /* Guide Cards */
        .guide-card {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: box-shadow .3s ease, transform .2s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .guide-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .guide-card-img {
            aspect-ratio: 16/9;
            background: var(--primary-soft);
            overflow: hidden;
            position: relative;
        }
        .guide-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .guide-card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .guide-card-title {
            font-size: 16px;
            font-weight: 600;
            line-height: 1.5;
            color: var(--text-main);
            margin: 0 0 8px;
            letter-spacing: -0.2px;
        }
        .guide-card-summary {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin: 0 0 16px;
            flex: 1;
        }
        .guide-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .guide-tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 3px 10px;
            border-radius: var(--radius-tag);
            font-size: 12px;
            font-weight: 500;
            background: var(--primary-soft);
            color: var(--primary);
        }
        .guide-tag.medium {
            background: #FFF7EB;
            color: var(--warning);
        }
        .guide-tag.advanced {
            background: #F0F7F7;
            color: var(--accent);
        }
        .guide-tag.easy {
            background: #F0FAF0;
            color: #2D8F4E;
        }

        /* Steps */
        .step-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
        }
        .step-item {
            flex: 1 1 220px;
            background: var(--card-bg);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 24px 20px;
            position: relative;
            transition: box-shadow .3s ease;
        }
        .step-item:hover {
            box-shadow: var(--shadow-card-hover);
        }
        .step-number {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 14px;
            flex-shrink: 0;
        }
        .step-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin: 0 0 6px;
        }
        .step-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin: 0;
        }

        /* Term List */
        .term-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 16px;
        }
        .term-item {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 18px 20px;
            border-left: 3px solid var(--primary);
            transition: box-shadow .3s ease;
        }
        .term-item:hover {
            box-shadow: var(--shadow-card-hover);
        }
        .term-name {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin: 0 0 6px;
        }
        .term-def {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
        }

        /* Risk Notice */
        .risk-box {
            background: #FFF9F0;
            border: 1px solid #FFE8CC;
            border-radius: var(--radius-card);
            padding: 24px 28px;
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }
        .risk-box i {
            color: var(--warning);
            font-size: 22px;
            flex-shrink: 0;
            margin-top: 4px;
        }
        .risk-box p {
            margin: 0;
            font-size: 14px;
            color: #6B4E2E;
            line-height: 1.85;
        }

        /* Subscription */
        .sub-panel {
            background: var(--dark-bg);
            border-radius: var(--radius-card);
            padding: 40px;
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            align-items: center;
            justify-content: space-between;
        }
        .sub-panel .sub-text {
            flex: 1 1 300px;
        }
        .sub-panel .sub-text h3 {
            font-size: 20px;
            font-weight: 600;
            color: #fff;
            margin: 0 0 8px;
        }
        .sub-panel .sub-text p {
            font-size: 14px;
            color: #B8C7D9;
            margin: 0;
            line-height: 1.75;
        }
        .sub-panel form {
            flex: 1 1 320px;
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }
        .sub-panel input[type="email"] {
            flex: 1 1 200px;
            padding: 10px 16px;
            border-radius: var(--radius-btn);
            border: 1px solid rgba(255,255,255,.15);
            background: rgba(255,255,255,.08);
            color: #fff;
            font-size: 14px;
            outline: none;
            transition: border-color .2s ease, background .2s ease;
        }
        .sub-panel input[type="email"]::placeholder {
            color: #7A8CA3;
        }
        .sub-panel input[type="email"]:focus {
            border-color: var(--primary);
            background: rgba(255,255,255,.12);
        }

        /* Footer */
        .site-footer {
            background: var(--dark-bg);
            color: #B8C7D9;
            padding: 48px 0 24px;
            font-size: 14px;
        }
        .site-footer .footer-title {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .site-footer p {
            line-height: 1.8;
            color: #B8C7D9;
            margin: 0 0 12px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 8px;
        }
        .footer-links a {
            color: #B8C7D9;
            font-size: 14px;
            transition: color .2s ease;
        }
        .footer-links a:hover {
            color: var(--primary);
        }
        .footer-divider {
            border-top: 1px solid rgba(255,255,255,.1);
            margin: 24px 0;
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
            font-size: 13px;
            color: #7A8CA3;
            justify-content: space-between;
            align-items: center;
        }
        .footer-bottom a {
            color: #7A8CA3;
        }
        .footer-bottom a:hover {
            color: var(--primary);
        }
        @media (max-width: 640px) {
            .site-footer {
                padding: 32px 0 16px;
            }
            .footer-bottom {
                gap: 8px 16px;
                font-size: 12px;
            }
        }

        /* Utility */
        .mt-0 { margin-top: 0; }
        .mb-0 { margin-bottom: 0; }
        .mt-1 { margin-top: 8px; }
        .mb-1 { margin-bottom: 8px; }
        .mt-2 { margin-top: 16px; }
        .mb-2 { margin-bottom: 16px; }
        .mt-3 { margin-top: 24px; }
        .mb-3 { margin-bottom: 24px; }
        .mt-4 { margin-top: 32px; }
        .mb-4 { margin-bottom: 32px; }
        .mx-auto { margin-left: auto; margin-right: auto; }
        .d-flex { display: flex; }
        .align-center { align-items: center; }
        .justify-between { justify-content: space-between; }
        .gap-2 { gap: 16px; }
        .flex-wrap { flex-wrap: wrap; }
        .w-100 { width: 100%; }
        .text-muted { color: var(--text-muted); }
        .text-secondary { color: var(--text-secondary); }
        .text-accent { color: var(--accent); }
        .text-warning { color: var(--warning); }
        .fw-600 { font-weight: 600; }
        .fs-sm { font-size: 13px; }
        .fs-lg { font-size: 17px; }