/* roulang page: index */
:root {
            --brand-dark: #0F4C3A;
            --brand-teal: #0B6B5A;
            --brand-gradient: linear-gradient(135deg, #0F4C3A 0%, #0B6B5A 100%);
            --accent: #F58220;
            --accent-light: #FFF3E8;
            --accent-dark: #D96A0E;
            --page-bg: #F5F6F7;
            --card-bg: #FFFFFF;
            --text-main: #1A1A1A;
            --text-secondary: #5A5F66;
            --text-muted: #8A9099;
            --border: #E4E7EB;
            --nav-bg: #2C3A4A;
            --success: #2E7D5B;
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-full: 999px;
            --shadow-card: 0 4px 16px rgba(15, 76, 58, 0.06);
            --shadow-card-hover: 0 8px 24px rgba(15, 76, 58, 0.12);
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'MiSans', 'HarmonyOS Sans SC', '思源黑体', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-main);
            background-color: var(--page-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        :focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section-padding {
            padding: 72px 0;
        }

        .section-alt {
            background-color: #FFFFFF;
        }

        .section-subtle {
            background-color: #FAFAFB;
        }

        /* Navigation */
        .site-header {
            background-color: var(--nav-bg);
            border-bottom: 2px solid rgba(255, 255, 255, 0.06);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.12);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 24px;
        }

        .logo-link {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--brand-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 14px;
            color: #fff;
            letter-spacing: 0;
        }

        .logo-text {
            font-size: 19px;
            font-weight: 800;
            color: #FFFFFF;
            letter-spacing: 0.04em;
            white-space: nowrap;
        }

        .nav-container {
            display: flex;
            align-items: center;
            gap: 28px;
            flex: 1;
            justify-content: center;
        }

        .nav-group {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .nav-group + .nav-group {
            border-left: 1px solid rgba(255, 255, 255, 0.18);
            padding-left: 28px;
        }

        .nav-group-label {
            font-size: 11px;
            color: rgba(255, 255, 255, 0.45);
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-right: 4px;
            user-select: none;
        }

        .nav-link {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
            letter-spacing: 0.02em;
            padding: 8px 10px;
            border-radius: 8px;
            transition: background-color var(--transition-fast), color var(--transition-fast);
            white-space: nowrap;
        }

        .nav-link:hover {
            background-color: rgba(255, 255, 255, 0.1);
            color: var(--accent);
        }

        .nav-link.active {
            background-color: rgba(245, 130, 32, 0.2);
            color: #FFFFFF;
            font-weight: 600;
        }

        .nav-cta-group {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-shrink: 0;
        }

        .nav-cta-link {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
            padding: 6px 10px;
            border-radius: 6px;
            transition: color var(--transition-fast), background-color var(--transition-fast);
            white-space: nowrap;
        }

        .nav-cta-link:hover {
            color: var(--accent);
            background-color: rgba(255, 255, 255, 0.08);
        }

        .hamburger-btn {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 5px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
        }

        .hamburger-btn span {
            width: 20px;
            height: 2px;
            background-color: #fff;
            border-radius: 2px;
            transition: all 0.3s ease;
        }

        .mobile-nav {
            display: none;
            background-color: var(--nav-bg);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 16px 0 20px;
        }

        .mobile-nav .container {
            flex-direction: column;
            gap: 8px;
        }

        .mobile-nav-group-label {
            font-size: 11px;
            color: rgba(255, 255, 255, 0.4);
            letter-spacing: 0.08em;
            padding: 8px 0 4px;
        }

        .mobile-nav-link {
            display: block;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.88);
            padding: 8px 12px;
            border-radius: 8px;
            transition: background-color var(--transition-fast);
        }

        .mobile-nav-link:hover {
            background-color: rgba(255, 255, 255, 0.08);
            color: var(--accent);
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 26px;
            border-radius: var(--radius-full);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.01em;
            transition: all var(--transition-fast);
            line-height: 1.5;
            text-align: center;
        }

        .btn-primary {
            background: var(--brand-gradient);
            color: #FFFFFF;
            border: none;
            box-shadow: 0 4px 14px rgba(15, 76, 58, 0.28);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 22px rgba(15, 76, 58, 0.36);
            filter: brightness(1.08);
            color: #FFFFFF;
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(15, 76, 58, 0.2);
        }

        .btn-secondary {
            background: #FFFFFF;
            color: var(--brand-dark);
            border: 1.5px solid var(--brand-dark);
        }

        .btn-secondary:hover {
            background-color: var(--accent-light);
            border-color: var(--accent);
            color: var(--accent-dark);
            transform: translateY(-2px);
        }

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

        .btn-accent {
            background: var(--accent);
            color: #FFFFFF;
            border: none;
            box-shadow: 0 4px 14px rgba(245, 130, 32, 0.3);
        }

        .btn-accent:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 22px rgba(245, 130, 32, 0.4);
            background-color: var(--accent-dark);
            color: #FFFFFF;
        }

        /* Hero */
        .hero-section {
            position: relative;
            background: var(--brand-gradient);
            overflow: hidden;
            min-height: 560px;
            display: flex;
            align-items: center;
        }

        .hero-bg-image {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.35;
            pointer-events: none;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 76, 58, 0.88) 0%, rgba(11, 107, 90, 0.72) 100%);
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 1;
            width: 100%;
            padding: 80px 0;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.16);
            border: 1px solid rgba(255, 255, 255, 0.24);
            color: #FFFFFF;
            font-size: 13px;
            font-weight: 600;
            padding: 8px 18px;
            border-radius: var(--radius-full);
            letter-spacing: 0.04em;
            backdrop-filter: blur(8px);
        }

        .hero-badge-dot {
            width: 8px;
            height: 8px;
            background: var(--accent);
            border-radius: 50%;
            display: inline-block;
            animation: pulse-dot 2s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.5; transform: scale(1.4); }
        }

        .hero-title {
            font-size: clamp(28px, 4vw, 40px);
            font-weight: 800;
            color: #FFFFFF;
            letter-spacing: -0.01em;
            line-height: 1.35;
            margin: 20px 0 16px;
        }

        .hero-subtitle {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.85;
            max-width: 560px;
            margin-bottom: 28px;
        }

        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 28px;
        }

        .hero-metrics {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.2);
        }

        .hero-metric-item {
            text-align: left;
        }

        .hero-metric-value {
            font-size: 28px;
            font-weight: 800;
            color: #FFFFFF;
            letter-spacing: -0.01em;
        }

        .hero-metric-label {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.65);
            letter-spacing: 0.03em;
        }

        .hero-visual-card {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.16);
            border-radius: var(--radius-lg);
            padding: 20px;
            backdrop-filter: blur(10px);
        }

        .hero-visual-card img {
            border-radius: var(--radius-md);
            width: 100%;
            height: 200px;
            object-fit: cover;
        }

        .hero-visual-card-caption {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.75);
            text-align: center;
            padding-top: 10px;
        }

        /* Sections */
        .section-title {
            font-size: clamp(22px, 2.8vw, 28px);
            font-weight: 800;
            color: var(--text-main);
            letter-spacing: -0.01em;
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .section-desc {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.85;
            max-width: 680px;
            margin-bottom: 36px;
        }

        .section-header {
            margin-bottom: 40px;
        }

        /* Cards */
        .card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-fast), transform var(--transition-fast), border-color var(--transition-fast);
        }

        .card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: rgba(15, 76, 58, 0.2);
        }

        .card-image {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: var(--radius-sm);
            margin-bottom: 16px;
        }

        .card-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
            line-height: 1.5;
            transition: color var(--transition-fast);
        }

        .card:hover .card-title {
            color: var(--accent-dark);
        }

        .card-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 12px;
        }

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

        .card-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            padding: 3px 10px;
            border-radius: var(--radius-full);
            background: var(--accent-light);
            color: var(--accent-dark);
        }

        /* Badge */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: var(--radius-full);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.03em;
            line-height: 1.4;
        }

        .badge-accent {
            background: var(--accent);
            color: #FFFFFF;
        }

        .badge-light-accent {
            background: var(--accent-light);
            color: var(--accent-dark);
        }

        .badge-green {
            background: #E8F5EE;
            color: var(--success);
        }

        .badge-outline {
            background: transparent;
            border: 1px solid var(--border);
            color: var(--text-secondary);
        }

        /* Number badge for steps */
        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: var(--radius-full);
            background: var(--accent);
            color: #FFFFFF;
            font-weight: 800;
            font-size: 15px;
            flex-shrink: 0;
            box-shadow: 0 3px 10px rgba(245, 130, 32, 0.3);
        }

        /* Testimonial stars */
        .stars {
            display: flex;
            gap: 2px;
            color: #F58220;
            font-size: 16px;
            letter-spacing: 1px;
        }

        /* FAQ */
        .faq-item {
            background: #FAFAFB;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color var(--transition-fast);
        }

        .faq-item:hover {
            border-color: rgba(245, 130, 32, 0.4);
        }

        .faq-item summary {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 16px 18px;
            cursor: pointer;
            font-weight: 600;
            font-size: 15px;
            color: var(--text-main);
            list-style: none;
            user-select: none;
            transition: background-color var(--transition-fast);
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary:hover {
            background-color: rgba(245, 130, 32, 0.04);
        }

        .faq-answer {
            padding: 0 18px 16px 52px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* Footer */
        .site-footer {
            background-color: var(--nav-bg);
            color: rgba(255, 255, 255, 0.75);
            padding-top: 56px;
            margin-top: 0;
        }

        .footer-top {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-brand {
            flex: 1 1 240px;
        }

        .footer-brand-name {
            font-size: 20px;
            font-weight: 800;
            color: #FFFFFF;
            margin-bottom: 8px;
            letter-spacing: 0.04em;
        }

        .footer-brand-desc {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.75;
        }

        .footer-links {
            flex: 2 1 400px;
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
        }

        .footer-link-group {
            flex: 1 1 140px;
        }

        .footer-link-group h4 {
            font-size: 14px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 12px;
            letter-spacing: 0.03em;
        }

        .footer-link-group a {
            display: block;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
            padding: 5px 0;
            transition: color var(--transition-fast);
        }

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

        .footer-contact {
            flex: 1 1 180px;
        }

        .footer-contact h4 {
            font-size: 14px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 12px;
        }

        .footer-contact p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.7;
            margin-bottom: 6px;
        }

        .footer-legal {
            padding: 20px 0;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.45);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer-legal a {
            color: rgba(255, 255, 255, 0.55);
            transition: color var(--transition-fast);
        }

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

        .footer-legal-sep {
            margin: 0 8px;
            color: rgba(255, 255, 255, 0.25);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .nav-container {
                gap: 18px;
            }

            .nav-group {
                gap: 14px;
            }

            .nav-group + .nav-group {
                padding-left: 18px;
            }

            .section-padding {
                padding: 56px 0;
            }
        }

        @media (max-width: 768px) {
            .site-header .container {
                height: 60px;
                gap: 12px;
            }

            .nav-container {
                display: none;
            }

            .nav-cta-group {
                display: none;
            }

            .hamburger-btn {
                display: flex;
            }

            .mobile-nav {
                display: block;
            }

            .hero-section {
                min-height: auto;
            }

            .hero-content {
                padding: 48px 0;
            }

            .hero-title {
                font-size: 26px;
            }

            .hero-metrics {
                gap: 18px;
            }

            .hero-metric-value {
                font-size: 22px;
            }

            .section-padding {
                padding: 44px 0;
            }

            .section-title {
                font-size: 20px;
            }

            .card-image {
                height: 150px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .logo-text {
                font-size: 17px;
            }

            .hero-title {
                font-size: 22px;
            }

            .hero-subtitle {
                font-size: 14px;
            }

            .btn {
                padding: 10px 20px;
                font-size: 14px;
            }

            .hero-cta-group {
                gap: 10px;
            }

            .hero-visual-card img {
                height: 140px;
            }

            .footer-top {
                flex-direction: column;
                gap: 28px;
            }

            .footer-links {
                flex-direction: column;
                gap: 20px;
            }

            .footer-legal {
                flex-direction: column;
                align-items: flex-start;
            }
        }

/* roulang page: category2 */
:root {
            --brand-dark: #0F4C3A;
            --brand-teal: #0B6B5A;
            --brand-gradient: linear-gradient(135deg, #0F4C3A 0%, #0B6B5A 100%);
            --accent: #F58220;
            --accent-light: #FFF3E8;
            --accent-dark: #D96A0E;
            --page-bg: #F5F6F7;
            --card-bg: #FFFFFF;
            --text-main: #1A1A1A;
            --text-secondary: #5A5F66;
            --text-muted: #8A9099;
            --border: #E4E7EB;
            --nav-bg: #2C3A4A;
            --success: #2E7D5B;
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-full: 999px;
            --shadow-card: 0 4px 16px rgba(15, 76, 58, 0.06);
            --shadow-card-hover: 0 8px 24px rgba(15, 76, 58, 0.12);
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'MiSans', 'HarmonyOS Sans SC', '思源黑体', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-main);
            background-color: var(--page-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .section-padding {
            padding: 72px 0;
        }
        .section-alt {
            background-color: #FFFFFF;
        }
        .section-subtle {
            background-color: #FAFAFB;
        }
        /* Navigation */
        .site-header {
            background-color: var(--nav-bg);
            border-bottom: 2px solid rgba(255,255,255,0.06);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 10px rgba(0,0,0,0.12);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 24px;
        }
        .logo-link {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--brand-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 14px;
            color: #fff;
            letter-spacing: 0;
        }
        .logo-text {
            font-size: 19px;
            font-weight: 800;
            color: #FFFFFF;
            letter-spacing: 0.04em;
            white-space: nowrap;
        }
        .nav-container {
            display: flex;
            align-items: center;
            gap: 28px;
            flex: 1;
            justify-content: center;
        }
        .nav-group {
            display: flex;
            align-items: center;
            gap: 20px;
        }
        .nav-group + .nav-group {
            border-left: 1px solid rgba(255,255,255,0.18);
            padding-left: 28px;
        }
        .nav-group-label {
            font-size: 11px;
            color: rgba(255,255,255,0.45);
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-right: 4px;
            user-select: none;
        }
        .nav-link {
            font-size: 14px;
            color: rgba(255,255,255,0.85);
            letter-spacing: 0.02em;
            padding: 8px 10px;
            border-radius: 8px;
            transition: background-color 0.2s ease, color 0.2s ease;
            white-space: nowrap;
        }
        .nav-link:hover {
            background-color: rgba(255,255,255,0.1);
            color: var(--accent);
        }
        .nav-link.active {
            background-color: rgba(245,130,32,0.2);
            color: #FFFFFF;
            font-weight: 600;
        }
        .nav-cta-group {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-shrink: 0;
        }
        .nav-cta-link {
            font-size: 14px;
            color: rgba(255,255,255,0.85);
            padding: 6px 10px;
            border-radius: 6px;
            transition: color 0.2s ease, background-color 0.2s ease;
            white-space: nowrap;
        }
        .nav-cta-link:hover {
            color: var(--accent);
            background-color: rgba(255,255,255,0.08);
        }
        .hamburger-btn {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 5px;
            background: rgba(255,255,255,0.08);
            border: 1px solid rgba(255,255,255,0.15);
        }
        .hamburger-btn span {
            width: 20px;
            height: 2px;
            background-color: #fff;
            border-radius: 2px;
            transition: all 0.3s ease;
        }
        .mobile-nav {
            display: none;
            background-color: var(--nav-bg);
            border-top: 1px solid rgba(255,255,255,0.08);
            padding: 16px 0 20px;
        }
        .mobile-nav .container {
            flex-direction: column;
            gap: 8px;
        }
        .mobile-nav-group-label {
            font-size: 12px;
            color: rgba(255,255,255,0.5);
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-top: 8px;
        }
        .mobile-nav-link {
            font-size: 15px;
            color: rgba(255,255,255,0.85);
            padding: 10px 12px;
            border-radius: 8px;
            display: block;
            width: 100%;
        }
        .mobile-nav-link:hover, .mobile-nav-link.active {
            background-color: rgba(245,130,32,0.15);
            color: #fff;
        }
        .mobile-nav-cta {
            display: flex;
            gap: 12px;
            padding: 10px 0;
        }
        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 15px;
            transition: all 0.2s ease;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--brand-gradient);
            color: #fff;
            box-shadow: 0 4px 12px rgba(15,76,58,0.2);
        }
        .btn-primary:hover {
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(15,76,58,0.3);
            filter: brightness(1.05);
        }
        .btn-secondary {
            background: #fff;
            color: var(--brand-dark);
            border: 1px solid var(--brand-dark);
        }
        .btn-secondary:hover {
            background: var(--accent-light);
            border-color: var(--accent);
            color: var(--accent-dark);
        }
        .btn-accent {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 12px rgba(245,130,32,0.25);
        }
        .btn-accent:hover {
            background: var(--accent-dark);
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(245,130,32,0.35);
        }
        /* Cards */
        .card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
            overflow: hidden;
        }
        .card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
            border-color: #d0d5da;
        }
        .card-img {
            aspect-ratio: 16/9;
            overflow: hidden;
            background-color: #eceff1;
        }
        .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .card:hover .card-img img {
            transform: scale(1.03);
        }
        .card-body {
            padding: 18px 20px 22px;
        }
        .card-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-main);
            margin: 0 0 8px;
            line-height: 1.5;
        }
        .card-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0 0 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 12px;
            color: var(--text-muted);
        }
        .badge {
            display: inline-flex;
            align-items: center;
            padding: 6px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            background: var(--accent-light);
            color: var(--accent-dark);
            line-height: 1;
        }
        .badge-outline {
            background: transparent;
            border: 1px solid var(--accent);
            color: var(--accent-dark);
        }
        .bignum {
            font-size: 36px;
            font-weight: 800;
            color: var(--brand-dark);
            line-height: 1.2;
        }
        /* Section headers */
        .section-title {
            font-size: 28px;
            font-weight: 800;
            letter-spacing: -0.01em;
            margin: 0 0 12px;
            color: var(--text-main);
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            margin: 0 0 32px;
            max-width: 720px;
            line-height: 1.8;
        }
        /* Newsletter form */
        .newsletter-form {
            display: flex;
            gap: 12px;
            max-width: 520px;
        }
        .newsletter-input {
            flex: 1;
            padding: 12px 18px;
            border: 1px solid var(--border);
            border-radius: 999px;
            background: #fff;
            font-size: 14px;
            color: var(--text-main);
            outline: none;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }
        .newsletter-input:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(245,130,32,0.15);
        }
        /* Footer */
        .site-footer {
            background-color: var(--nav-bg);
            color: rgba(255,255,255,0.8);
            padding: 48px 0 24px;
            margin-top: 0;
        }
        .site-footer .container {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }
        .footer-top {
            display: grid;
            grid-template-columns: 1.2fr 1fr 1fr;
            gap: 40px;
        }
        .footer-brand-name {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 8px;
        }
        .footer-brand-desc {
            font-size: 14px;
            color: rgba(255,255,255,0.7);
            line-height: 1.7;
            margin: 0;
        }
        .footer-link-group h4, .footer-contact h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 12px;
        }
        .footer-link-group a, .footer-contact a {
            display: block;
            color: rgba(255,255,255,0.75);
            font-size: 14px;
            margin-bottom: 8px;
            transition: color 0.2s ease;
        }
        .footer-link-group a:hover, .footer-contact a:hover {
            color: var(--accent);
        }
        .footer-contact p {
            font-size: 14px;
            margin: 0 0 4px;
            color: rgba(255,255,255,0.75);
        }
        .footer-legal {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 12px;
            color: rgba(255,255,255,0.55);
        }
        .footer-legal a {
            color: rgba(255,255,255,0.55);
            transition: color 0.2s ease;
        }
        .footer-legal a:hover {
            color: var(--accent);
        }
        .footer-legal-sep {
            margin: 0 8px;
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .footer-top {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .section-padding { padding: 48px 0; }
            .section-title { font-size: 24px; }
            .bignum { font-size: 28px; }
            .site-header .container { height: 60px; }
            .nav-container, .nav-cta-group { display: none; }
            .hamburger-btn { display: flex; }
            .mobile-nav.open { display: block; }
            .mobile-nav .container { flex-direction: column; }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-legal {
                flex-direction: column;
                align-items: flex-start;
            }
            .newsletter-form { flex-direction: column; align-items: stretch; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .logo-text { font-size: 17px; }
            .section-title { font-size: 22px; }
        }

/* roulang page: category1 */
:root {
            --brand-dark: #0F4C3A;
            --brand-teal: #0B6B5A;
            --brand-gradient: linear-gradient(135deg, #0F4C3A 0%, #0B6B5A 100%);
            --accent: #F58220;
            --accent-light: #FFF3E8;
            --accent-dark: #D96A0E;
            --page-bg: #F5F6F7;
            --card-bg: #FFFFFF;
            --text-main: #1A1A1A;
            --text-secondary: #5A5F66;
            --text-muted: #8A9099;
            --border: #E4E7EB;
            --nav-bg: #2C3A4A;
            --success: #2E7D5B;
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-full: 999px;
            --shadow-card: 0 4px 16px rgba(15, 76, 58, 0.06);
            --shadow-card-hover: 0 8px 24px rgba(15, 76, 58, 0.12);
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'MiSans', 'HarmonyOS Sans SC', '思源黑体', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-main);
            background-color: var(--page-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section-padding {
            padding: 64px 0;
        }

        .section-alt {
            background-color: #FFFFFF;
        }

        .section-subtle {
            background-color: #FAFAFB;
        }

        /* Navigation */
        .site-header {
            background-color: var(--nav-bg);
            border-bottom: 2px solid rgba(255, 255, 255, 0.06);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.12);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 24px;
        }

        .logo-link {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--brand-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 14px;
            color: #fff;
            letter-spacing: 0;
        }

        .logo-text {
            font-size: 19px;
            font-weight: 800;
            color: #FFFFFF;
            letter-spacing: 0.04em;
            white-space: nowrap;
        }

        .nav-container {
            display: flex;
            align-items: center;
            gap: 24px;
            flex: 1;
            justify-content: center;
        }

        .nav-group {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .nav-group + .nav-group {
            border-left: 1px solid rgba(255, 255, 255, 0.18);
            padding-left: 24px;
        }

        .nav-group-label {
            font-size: 11px;
            color: rgba(255, 255, 255, 0.45);
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-right: 2px;
            user-select: none;
            display: none;
        }

        .nav-link {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
            letter-spacing: 0.02em;
            padding: 8px 10px;
            border-radius: 8px;
            transition: background-color var(--transition-fast), color var(--transition-fast);
            white-space: nowrap;
        }

        .nav-link:hover {
            background-color: rgba(255, 255, 255, 0.1);
            color: var(--accent);
        }

        .nav-link.active {
            background-color: rgba(245, 130, 32, 0.25);
            color: #FFFFFF;
            font-weight: 600;
        }

        .nav-cta-group {
            display: flex;
            align-items: center;
            gap: 18px;
            flex-shrink: 0;
        }

        .nav-cta-link {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
            padding: 6px 4px;
            border-radius: 6px;
            transition: color var(--transition-fast), background-color var(--transition-fast);
            white-space: nowrap;
        }

        .nav-cta-link:hover {
            color: var(--accent);
            background-color: rgba(255, 255, 255, 0.08);
        }

        .hamburger-btn {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 5px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            flex-shrink: 0;
        }

        .hamburger-btn span {
            width: 20px;
            height: 2px;
            background-color: #fff;
            border-radius: 2px;
            transition: all 0.3s ease;
        }

        .hamburger-btn.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger-btn.open span:nth-child(2) {
            opacity: 0;
        }
        .hamburger-btn.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-nav {
            display: none;
            background-color: var(--nav-bg);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 12px 0 20px;
        }

        .mobile-nav .container {
            flex-direction: column;
            gap: 6px;
            padding: 0 24px;
        }

        .mobile-nav .mobile-nav-group-label {
            font-size: 11px;
            color: rgba(255, 255, 255, 0.45);
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-top: 8px;
        }

        .mobile-nav .mobile-nav-link {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.85);
            padding: 10px 12px;
            border-radius: 8px;
            transition: background-color var(--transition-fast), color var(--transition-fast);
            display: block;
        }

        .mobile-nav .mobile-nav-link:hover {
            background-color: rgba(255, 255, 255, 0.1);
            color: var(--accent);
        }

        .mobile-nav .mobile-nav-link.active {
            background-color: rgba(245, 130, 32, 0.25);
            color: #FFFFFF;
            font-weight: 600;
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

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

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

        .breadcrumb .sep {
            color: var(--text-muted);
            user-select: none;
        }

        .breadcrumb .current {
            color: var(--text-main);
            font-weight: 600;
        }

        /* Category header */
        .category-header {
            background: var(--brand-gradient);
            border-radius: var(--radius-lg);
            padding: 44px 40px;
            position: relative;
            overflow: hidden;
            color: #FFFFFF;
            margin-bottom: 8px;
        }

        .category-header::after {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 50%;
            height: 100%;
            background: linear-gradient(90deg, transparent 0%, rgba(0, 0, 0, 0.18) 100%);
            pointer-events: none;
        }

        .category-header .category-header-content {
            position: relative;
            z-index: 2;
            max-width: 600px;
        }

        .category-header h1 {
            font-size: 32px;
            font-weight: 800;
            letter-spacing: -0.01em;
            margin: 0 0 12px;
            color: #FFFFFF;
        }

        .category-header p {
            font-size: 15px;
            line-height: 1.85;
            color: rgba(255, 255, 255, 0.88);
            margin: 0;
        }

        .category-header .header-img {
            position: absolute;
            top: 0;
            right: 0;
            width: 42%;
            height: 100%;
            object-fit: cover;
            opacity: 0.5;
            z-index: 1;
            mask-image: linear-gradient(90deg, transparent 0%, rgba(0, 0, 0, 0.7) 100%);
            -webkit-mask-image: linear-gradient(90deg, transparent 0%, rgba(0, 0, 0, 0.7) 100%);
        }

        /* Support links */
        .support-links {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            padding: 20px 0 8px;
        }

        .support-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-full);
            padding: 10px 20px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-card);
        }

        .support-link:hover {
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-1px);
            box-shadow: var(--shadow-card-hover);
        }

        .support-link .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            flex-shrink: 0;
        }

        /* Card grid */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

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

        .event-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(245, 130, 32, 0.35);
        }

        .event-card .card-img-wrap {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            position: relative;
            background: #E8EBED;
        }

        .event-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }

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

        .event-card .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(255, 255, 255, 0.92);
            color: var(--text-secondary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-full);
            letter-spacing: 0.02em;
        }

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

        .event-card .card-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            margin: 0 0 8px;
            line-height: 1.5;
            letter-spacing: -0.01em;
            transition: color var(--transition-fast);
        }

        .event-card:hover .card-title {
            color: var(--accent);
        }

        .event-card .card-summary {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0 0 14px;
            flex: 1;
        }

        .event-card .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--text-muted);
            border-top: 1px solid var(--border);
            padding-top: 12px;
        }

        .event-card .card-meta .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* Trending */
        .trending-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .trending-item {
            display: flex;
            gap: 14px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 14px 16px;
            box-shadow: var(--shadow-card);
            transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
            align-items: center;
        }

        .trending-item:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(245, 130, 32, 0.35);
        }

        .trending-item .trending-img {
            width: 64px;
            height: 64px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: #E8EBED;
        }

        .trending-item .trending-info {
            flex: 1;
            min-width: 0;
        }

        .trending-item .trending-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.5;
            margin: 0 0 4px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition-fast);
        }

        .trending-item:hover .trending-title {
            color: var(--accent);
        }

        .trending-item .trending-tag {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* Stats badges */
        .stats-badge-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .stat-badge-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: transform var(--transition-fast), box-shadow var(--transition-fast);
        }

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

        .stat-badge-card .stat-number {
            font-size: 32px;
            font-weight: 800;
            color: var(--brand-dark);
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-bottom: 4px;
        }

        .stat-badge-card .stat-badge-pill {
            display: inline-block;
            background: var(--accent-light);
            color: var(--accent-dark);
            font-size: 12px;
            font-weight: 600;
            padding: 3px 14px;
            border-radius: var(--radius-full);
            margin-bottom: 8px;
        }

        .stat-badge-card .stat-label {
            font-size: 14px;
            color: var(--text-secondary);
        }

        /* Subscribe box */
        .subscribe-box {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 36px 40px;
            box-shadow: var(--shadow-card);
            display: flex;
            align-items: center;
            gap: 32px;
            flex-wrap: wrap;
            justify-content: space-between;
        }

        .subscribe-box .subscribe-info {
            flex: 1;
            min-width: 260px;
        }

        .subscribe-box .subscribe-info h2 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-main);
            margin: 0 0 8px;
            letter-spacing: -0.01em;
        }

        .subscribe-box .subscribe-info p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
        }

        .subscribe-form {
            display: flex;
            gap: 12px;
            flex-shrink: 0;
            min-width: 280px;
        }

        .subscribe-form input {
            flex: 1;
            min-width: 200px;
            padding: 12px 18px;
            border: 1.5px solid var(--border);
            border-radius: 12px;
            font-size: 14px;
            color: var(--text-main);
            background: var(--page-bg);
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            outline: none;
        }

        .subscribe-form input:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(245, 130, 32, 0.15);
        }

        .subscribe-form input::placeholder {
            color: var(--text-muted);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--brand-gradient);
            color: #FFFFFF;
            font-weight: 600;
            font-size: 14px;
            padding: 12px 24px;
            border-radius: 12px;
            transition: all var(--transition-fast);
            white-space: nowrap;
            box-shadow: 0 2px 8px rgba(15, 76, 58, 0.2);
        }

        .btn-primary:hover {
            filter: brightness(1.1);
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(15, 76, 58, 0.28);
        }

        .btn-primary:active {
            transform: translateY(0);
            filter: brightness(0.95);
        }

        .btn-primary:focus {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: transparent;
            color: var(--brand-dark);
            font-weight: 600;
            font-size: 14px;
            padding: 11px 24px;
            border-radius: 12px;
            border: 1.5px solid var(--brand-dark);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .btn-secondary:hover {
            background: var(--accent-light);
            border-color: var(--accent);
            color: var(--accent-dark);
            transform: translateY(-1px);
        }

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

        .btn-secondary:focus {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        /* Category links */
        .category-links-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .category-link-card {
            display: block;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 18px 16px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
        }

        .category-link-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(245, 130, 32, 0.4);
        }

        .category-link-card .cl-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--accent-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            margin: 0 auto 8px;
            color: var(--accent-dark);
            font-weight: 700;
        }

        .category-link-card .cl-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            transition: color var(--transition-fast);
        }

        .category-link-card:hover .cl-name {
            color: var(--accent);
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 820px;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: border-color var(--transition-fast);
        }

        .faq-item:hover {
            border-color: rgba(245, 130, 32, 0.35);
        }

        .faq-item summary {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 16px 20px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            list-style: none;
            user-select: none;
            transition: background-color var(--transition-fast);
            position: relative;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary::-moz-list-bullet {
            list-style-type: none;
        }

        .faq-item summary:hover {
            background-color: #FAFAFB;
        }

        .faq-item summary .faq-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            flex-shrink: 0;
        }

        .faq-item summary .faq-arrow {
            margin-left: auto;
            font-size: 12px;
            color: var(--text-muted);
            transition: transform var(--transition-fast);
            flex-shrink: 0;
        }

        .faq-item[open] summary .faq-arrow {
            transform: rotate(180deg);
        }

        .faq-item .faq-answer {
            padding: 0 20px 18px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            border-top: 1px solid var(--border);
            padding-top: 14px;
            margin: 0 20px;
            padding-left: 20px;
            padding-right: 0;
            margin-left: 20px;
            margin-right: 0;
        }

        /* Section titles */
        .section-title {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: -0.01em;
            margin: 0 0 8px;
            line-height: 1.3;
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--text-secondary);
            margin: 0 0 32px;
            line-height: 1.7;
        }

        .section-head {
            margin-bottom: 28px;
        }

        .more-link {
            font-size: 13px;
            color: var(--accent);
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: color var(--transition-fast);
            white-space: nowrap;
        }

        .more-link:hover {
            color: var(--accent-dark);
        }

        .more-link .arrow {
            font-size: 14px;
            line-height: 1;
        }

        /* Footer */
        .site-footer {
            background-color: var(--nav-bg);
            color: rgba(255, 255, 255, 0.82);
            padding: 48px 0 24px;
            margin-top: 24px;
        }

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

        .footer-top {
            display: grid;
            grid-template-columns: 2fr 2fr 1.5fr;
            gap: 40px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-brand .footer-brand-name {
            font-size: 22px;
            font-weight: 800;
            color: #FFFFFF;
            letter-spacing: 0.04em;
            margin-bottom: 8px;
        }

        .footer-brand .footer-brand-desc {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.62);
            line-height: 1.7;
        }

        .footer-links {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }

        .footer-link-group h4,
        .footer-contact h4 {
            font-size: 14px;
            font-weight: 700;
            color: #FFFFFF;
            margin: 0 0 12px;
            letter-spacing: 0.03em;
        }

        .footer-link-group a {
            display: block;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.68);
            padding: 4px 0;
            transition: color var(--transition-fast), padding-left var(--transition-fast);
        }

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

        .footer-contact p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.62);
            line-height: 1.7;
            margin: 0 0 4px;
        }

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

        .footer-legal a {
            color: rgba(255, 255, 255, 0.5);
            transition: color var(--transition-fast);
        }

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

        .footer-legal-sep {
            margin: 0 8px;
            color: rgba(255, 255, 255, 0.25);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .nav-group-label {
                display: none;
            }
            .nav-container {
                gap: 16px;
            }
            .nav-cta-group {
                gap: 12px;
            }
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-badge-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .category-links-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .footer-contact {
                grid-column: span 2;
            }
        }

        @media (max-width: 768px) {
            .site-header .container {
                height: 64px;
                gap: 12px;
                flex-wrap: nowrap;
            }
            .logo-text {
                font-size: 17px;
            }
            .nav-container {
                display: none;
            }
            .nav-cta-group {
                display: none;
            }
            .hamburger-btn {
                display: flex;
            }
            .mobile-nav {
                display: block;
            }
            .mobile-nav .container {
                padding: 0 20px;
            }
            .section-padding {
                padding: 48px 0;
            }
            .category-header {
                padding: 32px 24px;
            }
            .category-header h1 {
                font-size: 26px;
            }
            .category-header p {
                font-size: 14px;
            }
            .category-header .header-img {
                width: 100%;
                opacity: 0.22;
            }
            .card-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .trending-list {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .stats-badge-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .subscribe-box {
                flex-direction: column;
                align-items: flex-start;
                padding: 24px 20px;
                gap: 16px;
            }
            .subscribe-form {
                width: 100%;
                min-width: unset;
                flex-direction: column;
            }
            .subscribe-form input {
                width: 100%;
                min-width: unset;
            }
            .category-links-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-contact {
                grid-column: span 1;
            }
            .footer-legal {
                flex-direction: column;
                align-items: flex-start;
            }
            .section-title {
                font-size: 20px;
            }
            .section-subtitle {
                font-size: 14px;
                margin-bottom: 24px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .section-padding {
                padding: 36px 0;
            }
            .category-header {
                padding: 24px 18px;
                border-radius: var(--radius-md);
            }
            .category-header h1 {
                font-size: 22px;
            }
            .stats-badge-grid {
                grid-template-columns: 1fr;
            }
            .category-links-grid {
                grid-template-columns: 1fr;
            }
            .support-link {
                padding: 8px 14px;
                font-size: 13px;
            }
            .event-card .card-body {
                padding: 14px 16px 16px;
            }
            .event-card .card-title {
                font-size: 15px;
            }
            .event-card .card-summary {
                font-size: 13px;
            }
            .faq-item summary {
                font-size: 14px;
                padding: 14px 16px;
            }
            .faq-item .faq-answer {
                font-size: 13px;
                margin: 0 16px;
                padding-left: 0;
            }
            .subscribe-form .btn-primary {
                width: 100%;
            }
            .subscribe-form .btn-secondary {
                width: 100%;
            }
        }

/* roulang page: category3 */
:root {
            --brand-dark: #0F4C3A;
            --brand-teal: #0B6B5A;
            --brand-gradient: linear-gradient(135deg, #0F4C3A 0%, #0B6B5A 100%);
            --accent: #F58220;
            --accent-light: #FFF3E8;
            --accent-dark: #D96A0E;
            --page-bg: #F5F6F7;
            --card-bg: #FFFFFF;
            --text-main: #1A1A1A;
            --text-secondary: #5A5F66;
            --text-muted: #8A9099;
            --border: #E4E7EB;
            --nav-bg: #2C3A4A;
            --success: #2E7D5B;
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-full: 999px;
            --shadow-card: 0 4px 16px rgba(15, 76, 58, 0.06);
            --shadow-card-hover: 0 8px 24px rgba(15, 76, 58, 0.12);
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'MiSans', 'HarmonyOS Sans SC', '思源黑体', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-main);
            background-color: var(--page-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section-padding {
            padding: 64px 0;
        }

        .section-alt {
            background-color: #FFFFFF;
        }

        .section-subtle {
            background-color: #FAFAFB;
        }

        .site-header {
            background-color: var(--nav-bg);
            border-bottom: 2px solid rgba(255, 255, 255, 0.06);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.12);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 24px;
        }

        .logo-link {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--brand-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 14px;
            color: #fff;
            letter-spacing: 0;
        }

        .logo-text {
            font-size: 19px;
            font-weight: 800;
            color: #FFFFFF;
            letter-spacing: 0.04em;
            white-space: nowrap;
        }

        .nav-container {
            display: flex;
            align-items: center;
            gap: 28px;
            flex: 1;
            justify-content: center;
        }

        .nav-group {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .nav-group+.nav-group {
            border-left: 1px solid rgba(255, 255, 255, 0.18);
            padding-left: 28px;
        }

        .nav-group-label {
            font-size: 11px;
            color: rgba(255, 255, 255, 0.45);
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-right: 4px;
            user-select: none;
        }

        .nav-link {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
            letter-spacing: 0.02em;
            padding: 8px 10px;
            border-radius: 8px;
            transition: background-color var(--transition-fast), color var(--transition-fast);
            white-space: nowrap;
        }

        .nav-link:hover {
            background-color: rgba(255, 255, 255, 0.1);
            color: var(--accent);
        }

        .nav-link.active {
            background-color: rgba(245, 130, 32, 0.2);
            color: #FFFFFF;
            font-weight: 600;
        }

        .nav-cta-group {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-shrink: 0;
        }

        .nav-cta-link {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
            padding: 6px 10px;
            border-radius: 6px;
            transition: color var(--transition-fast), background-color var(--transition-fast);
            white-space: nowrap;
        }

        .nav-cta-link:hover {
            color: var(--accent);
            background-color: rgba(255, 255, 255, 0.08);
        }

        .hamburger-btn {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 5px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
        }

        .hamburger-btn span {
            width: 20px;
            height: 2px;
            background-color: #fff;
            border-radius: 2px;
            transition: all 0.3s ease;
        }

        .mobile-nav {
            display: none;
            background-color: var(--nav-bg);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 16px 0 20px;
        }

        .mobile-nav .container {
            flex-direction: column;
            gap: 8px;
        }

        .mobile-nav-group-label {
            font-size: 11px;
            color: rgba(255, 255, 255, 0.45);
            letter-spacing: 0.08em;
            text-transform: uppercase;
        }

        .mobile-nav-link {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.85);
            padding: 10px 12px;
            border-radius: 8px;
            transition: background-color var(--transition-fast), color var(--transition-fast);
        }

        .mobile-nav-link:hover {
            background-color: rgba(255, 255, 255, 0.1);
            color: var(--accent);
        }

        .mobile-nav-link.active {
            background-color: rgba(245, 130, 32, 0.2);
            color: #fff;
            font-weight: 600;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--brand-gradient);
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            padding: 12px 28px;
            border-radius: var(--radius-full);
            transition: transform var(--transition-fast), box-shadow var(--transition-fast), filter var(--transition-fast);
            box-shadow: 0 4px 12px rgba(15, 76, 58, 0.2);
            white-space: nowrap;
        }

        .btn-primary:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(15, 76, 58, 0.3);
            filter: brightness(1.06);
            color: #fff;
        }

        .btn-primary:focus-visible {
            outline: 3px solid rgba(245, 130, 32, 0.5);
            outline-offset: 2px;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: #fff;
            color: var(--brand-dark);
            font-weight: 600;
            font-size: 14px;
            padding: 12px 28px;
            border-radius: var(--radius-full);
            border: 1.5px solid var(--brand-dark);
            transition: background-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
            white-space: nowrap;
        }

        .btn-secondary:hover {
            background-color: var(--accent-light);
            color: var(--accent-dark);
            border-color: var(--accent);
            transform: translateY(-1px);
        }

        .btn-secondary:focus-visible {
            outline: 3px solid rgba(245, 130, 32, 0.5);
            outline-offset: 2px;
        }

        .card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-fast), transform var(--transition-fast), border-color var(--transition-fast);
            overflow: hidden;
        }

        .card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
            border-color: rgba(15, 76, 58, 0.25);
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: var(--radius-full);
            background: var(--accent);
            color: #fff;
            line-height: 1.4;
            white-space: nowrap;
        }

        .badge-light {
            background: var(--accent-light);
            color: var(--accent-dark);
        }

        .badge-outline {
            background: transparent;
            color: var(--brand-dark);
            border: 1px solid var(--border);
        }

        .section-title {
            font-size: 26px;
            font-weight: 800;
            letter-spacing: -0.01em;
            color: var(--text-main);
            margin: 0 0 12px;
            line-height: 1.4;
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--text-secondary);
            margin: 0 0 32px;
            line-height: 1.8;
            max-width: 680px;
        }

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

        .breadcrumb a {
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }

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

        .breadcrumb .separator {
            color: var(--text-muted);
            user-select: none;
        }

        .breadcrumb .current {
            color: var(--brand-dark);
            font-weight: 600;
        }

        .category-hero {
            background: var(--brand-gradient);
            border-radius: var(--radius-lg);
            padding: 40px 40px 36px;
            color: #fff;
            position: relative;
            overflow: hidden;
            margin-top: 32px;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 50%;
            height: 180%;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 50%;
            pointer-events: none;
        }

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

        .category-hero h1 {
            font-size: 32px;
            font-weight: 800;
            letter-spacing: -0.01em;
            margin: 12px 0 12px;
            line-height: 1.35;
        }

        .category-hero .hero-desc {
            font-size: 15px;
            line-height: 1.85;
            color: rgba(255, 255, 255, 0.88);
            max-width: 720px;
            margin: 0;
        }

        .category-hero .hero-image {
            position: absolute;
            right: 0;
            top: 0;
            height: 100%;
            width: 30%;
            object-fit: cover;
            opacity: 0.35;
            mask-image: linear-gradient(to right, transparent 0%, #000 100%);
            -webkit-mask-image: linear-gradient(to right, transparent 0%, #000 100%);
            pointer-events: none;
        }

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

        .content-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: rgba(15, 76, 58, 0.25);
        }

        .content-card .card-image {
            aspect-ratio: 16/10;
            overflow: hidden;
            position: relative;
        }

        .content-card .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

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

        .content-card .card-body {
            padding: 20px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .content-card .card-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-main);
            margin: 0 0 10px;
            line-height: 1.5;
            transition: color var(--transition-fast);
        }

        .content-card:hover .card-title {
            color: var(--accent-dark);
        }

        .content-card .card-excerpt {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin: 0 0 16px;
            flex: 1;
        }

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

        .content-card .card-meta .tag {
            background: var(--accent-light);
            color: var(--accent-dark);
            font-weight: 600;
            padding: 3px 10px;
            border-radius: var(--radius-full);
            font-size: 11px;
        }

        .sub-topic-card {
            display: flex;
            align-items: center;
            gap: 16px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-fast), transform var(--transition-fast), border-color var(--transition-fast);
        }

        .sub-topic-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
            border-color: rgba(15, 76, 58, 0.25);
        }

        .sub-topic-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: var(--brand-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #fff;
            flex-shrink: 0;
        }

        .sub-topic-card h3 {
            font-size: 16px;
            font-weight: 700;
            margin: 0 0 4px;
            color: var(--text-main);
        }

        .sub-topic-card p {
            font-size: 13px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.6;
        }

        .stat-item {
            text-align: center;
            padding: 24px 16px;
        }

        .stat-number {
            font-size: 30px;
            font-weight: 800;
            color: var(--brand-dark);
            line-height: 1.2;
            letter-spacing: -0.02em;
        }

        .stat-label {
            font-size: 13px;
            color: var(--text-secondary);
            margin-top: 6px;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: border-color var(--transition-fast);
        }

        .faq-item:hover {
            border-color: rgba(15, 76, 58, 0.3);
        }

        .faq-item summary {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 18px 22px;
            cursor: pointer;
            font-weight: 700;
            font-size: 15px;
            color: var(--text-main);
            list-style: none;
            position: relative;
            transition: color var(--transition-fast);
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary:hover {
            color: var(--accent-dark);
        }

        .faq-item summary::after {
            content: '+';
            font-size: 20px;
            font-weight: 400;
            color: var(--accent);
            margin-left: auto;
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }

        .faq-item[open] summary::after {
            transform: rotate(45deg);
        }

        .faq-item .faq-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            flex-shrink: 0;
        }

        .faq-item .faq-answer {
            padding: 0 22px 20px 42px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        .cta-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 32px 36px;
            box-shadow: var(--shadow-card);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }

        .cta-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            margin: 0 0 8px;
        }

        .cta-card p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.7;
        }

        .site-footer {
            background-color: var(--nav-bg);
            color: rgba(255, 255, 255, 0.85);
            padding: 48px 0 0;
            margin-top: 64px;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-brand-name {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.04em;
            margin-bottom: 10px;
        }

        .footer-brand-desc {
            font-size: 13px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            margin: 0;
            max-width: 300px;
        }

        .footer-link-group h4,
        .footer-contact h4 {
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 14px;
            letter-spacing: 0.04em;
        }

        .footer-link-group {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-link-group a {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            transition: color var(--transition-fast);
        }

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

        .footer-contact p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            margin: 0 0 8px;
            line-height: 1.7;
        }

        .footer-legal {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            padding: 20px 0;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-legal a {
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition-fast);
        }

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

        .footer-legal-sep {
            margin: 0 8px;
            opacity: 0.5;
        }

        @media (max-width: 1024px) {
            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }

            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 768px) {
            .nav-container {
                display: none;
            }

            .nav-cta-group {
                display: none;
            }

            .hamburger-btn {
                display: flex;
            }

            .mobile-nav.open {
                display: block;
            }

            .mobile-nav .container {
                display: flex;
            }

            .category-hero {
                padding: 28px 24px;
            }

            .category-hero h1 {
                font-size: 26px;
            }

            .category-hero .hero-image {
                width: 50%;
                opacity: 0.2;
            }

            .section-padding {
                padding: 48px 0;
            }

            .section-title {
                font-size: 22px;
            }

            .cta-card {
                flex-direction: column;
                align-items: flex-start;
            }

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

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

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .site-header .container {
                height: 60px;
                gap: 12px;
            }

            .logo-text {
                font-size: 17px;
            }

            .category-hero {
                border-radius: var(--radius-md);
                padding: 22px 18px;
            }

            .category-hero h1 {
                font-size: 22px;
            }

            .section-title {
                font-size: 20px;
            }

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

            .cta-card {
                padding: 24px 20px;
            }
        }

/* roulang page: category4 */
:root {
            --brand-dark: #0F4C3A;
            --brand-teal: #0B6B5A;
            --brand-gradient: linear-gradient(135deg, #0F4C3A 0%, #0B6B5A 100%);
            --accent: #F58220;
            --accent-light: #FFF3E8;
            --accent-dark: #D96A0E;
            --page-bg: #F5F6F7;
            --card-bg: #FFFFFF;
            --text-main: #1A1A1A;
            --text-secondary: #5A5F66;
            --text-muted: #8A9099;
            --border: #E4E7EB;
            --nav-bg: #2C3A4A;
            --success: #2E7D5B;
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-full: 999px;
            --shadow-card: 0 4px 16px rgba(15, 76, 58, 0.06);
            --shadow-card-hover: 0 8px 24px rgba(15, 76, 58, 0.12);
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'MiSans', 'HarmonyOS Sans SC', '思源黑体', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-main);
            background-color: var(--page-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section-padding {
            padding: 64px 0;
        }

        .section-alt {
            background-color: #FFFFFF;
        }

        .section-subtle {
            background-color: #FAFAFB;
        }

        /* Navigation */
        .site-header {
            background-color: var(--nav-bg);
            border-bottom: 2px solid rgba(255, 255, 255, 0.06);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.12);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 24px;
            flex-wrap: nowrap;
        }

        .logo-link {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--brand-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 14px;
            color: #fff;
            letter-spacing: 0;
        }

        .logo-text {
            font-size: 19px;
            font-weight: 800;
            color: #FFFFFF;
            letter-spacing: 0.04em;
            white-space: nowrap;
        }

        .nav-container {
            display: flex;
            align-items: center;
            gap: 26px;
            flex: 1;
            justify-content: center;
        }

        .nav-group {
            display: flex;
            align-items: center;
            gap: 18px;
        }

        .nav-group+.nav-group {
            border-left: 1px solid rgba(255, 255, 255, 0.18);
            padding-left: 26px;
        }

        .nav-group-label {
            font-size: 11px;
            color: rgba(255, 255, 255, 0.45);
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-right: 2px;
            user-select: none;
            white-space: nowrap;
        }

        .nav-link {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
            letter-spacing: 0.02em;
            padding: 8px 10px;
            border-radius: 8px;
            transition: background-color var(--transition-fast), color var(--transition-fast);
            white-space: nowrap;
        }

        .nav-link:hover {
            background-color: rgba(255, 255, 255, 0.1);
            color: var(--accent);
        }

        .nav-link.active {
            background-color: rgba(245, 130, 32, 0.2);
            color: #FFFFFF;
            font-weight: 600;
        }

        .nav-cta-group {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }

        .nav-cta-link {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
            padding: 6px 10px;
            border-radius: 6px;
            transition: color var(--transition-fast), background-color var(--transition-fast);
            white-space: nowrap;
        }

        .nav-cta-link:hover {
            color: var(--accent);
            background-color: rgba(255, 255, 255, 0.08);
        }

        .hamburger-btn {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 5px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            flex-shrink: 0;
        }

        .hamburger-btn span {
            width: 20px;
            height: 2px;
            background-color: #fff;
            border-radius: 2px;
            transition: all 0.3s ease;
        }

        .mobile-nav {
            display: none;
            background-color: var(--nav-bg);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 16px 0 20px;
        }

        .mobile-nav .container {
            flex-direction: column;
            gap: 8px;
            align-items: stretch;
        }

        .mobile-nav-group-label {
            font-size: 11px;
            color: rgba(255, 255, 255, 0.45);
            letter-spacing: 0.08em;
            margin: 8px 0 4px;
        }

        .mobile-nav .nav-link {
            display: block;
            padding: 10px 12px;
            border-radius: 8px;
            font-size: 15px;
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

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

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

        .breadcrumb .sep {
            color: var(--text-muted);
            user-select: none;
        }

        .breadcrumb .current {
            color: var(--brand-dark);
            font-weight: 600;
        }

        /* Category Header */
        .category-header {
            background: var(--brand-gradient);
            border-radius: var(--radius-lg);
            padding: 40px 40px 36px;
            position: relative;
            overflow: hidden;
            color: #fff;
            margin-bottom: 24px;
        }

        .category-header::after {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 420px;
            height: 420px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            pointer-events: none;
        }

        .category-header .header-content {
            position: relative;
            z-index: 1;
            max-width: 720px;
        }

        .category-header h1 {
            font-size: clamp(24px, 3vw, 34px);
            font-weight: 800;
            letter-spacing: -0.01em;
            margin: 0 0 12px;
            color: #fff;
        }

        .category-header .category-desc {
            font-size: 15px;
            line-height: 1.85;
            color: rgba(255, 255, 255, 0.88);
            margin: 0;
            max-width: 660px;
        }

        /* Section Titles */
        .section-title {
            font-size: clamp(20px, 2.5vw, 27px);
            font-weight: 800;
            letter-spacing: -0.01em;
            color: var(--text-main);
            margin: 0 0 8px;
            line-height: 1.4;
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--text-secondary);
            margin: 0 0 32px;
            line-height: 1.75;
        }

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

        /* Cards */
        .content-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-fast), transform var(--transition-fast), border-color var(--transition-fast);
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .content-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
            border-color: rgba(15, 76, 58, 0.25);
        }

        .content-card .card-image-wrap {
            aspect-ratio: 16/10;
            overflow: hidden;
            background-color: #E8EDEB;
            position: relative;
        }

        .content-card .card-image-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }

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

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

        .content-card .card-tag {
            display: inline-block;
            background: var(--accent-light);
            color: var(--accent-dark);
            font-size: 12px;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: var(--radius-full);
            margin-bottom: 12px;
            align-self: flex-start;
        }

        .content-card .card-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-main);
            margin: 0 0 8px;
            line-height: 1.5;
            transition: color var(--transition-fast);
        }

        .content-card:hover .card-title {
            color: var(--accent-dark);
        }

        .content-card .card-excerpt {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0 0 14px;
            flex: 1;
        }

        .content-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 12px;
            color: var(--text-muted);
            padding-top: 12px;
            border-top: 1px solid var(--border);
            flex-wrap: wrap;
            gap: 8px;
        }

        .content-card .card-meta .meta-source {
            font-weight: 500;
        }

        .content-card .card-meta .meta-date {
            white-space: nowrap;
        }

        /* Support Entry */
        .support-entry {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 16px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            flex-wrap: wrap;
        }

        .support-entry:hover {
            border-color: rgba(15, 76, 58, 0.3);
            box-shadow: var(--shadow-card);
        }

        .support-entry .entry-label {
            font-weight: 700;
            font-size: 15px;
            color: var(--text-main);
        }

        .support-entry .entry-desc {
            font-size: 13px;
            color: var(--text-secondary);
            margin-top: 2px;
        }

        .support-entry .entry-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            color: var(--brand-dark);
            font-weight: 600;
            padding: 8px 14px;
            border-radius: var(--radius-full);
            border: 1px solid var(--brand-dark);
            transition: background-color var(--transition-fast), color var(--transition-fast);
            white-space: nowrap;
        }

        .support-entry .entry-link:hover {
            background-color: var(--brand-dark);
            color: #fff;
        }

        /* Popular list */
        .popular-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 16px 18px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .popular-item:hover {
            border-color: rgba(15, 76, 58, 0.3);
            box-shadow: var(--shadow-card);
        }

        .popular-item .popular-rank {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--accent-light);
            color: var(--accent-dark);
            font-weight: 800;
            font-size: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .popular-item .popular-info {
            flex: 1;
            min-width: 0;
        }

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

        .popular-item .popular-meta {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* Data badge */
        .data-badge {
            background: var(--accent);
            color: #fff;
            border-radius: var(--radius-full);
            padding: 8px 18px;
            font-weight: 700;
            font-size: 20px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            line-height: 1.2;
            letter-spacing: -0.01em;
        }

        .data-badge .badge-label {
            font-size: 13px;
            font-weight: 500;
            opacity: 0.9;
            letter-spacing: 0.02em;
        }

        .data-badge-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-fast), transform var(--transition-fast);
        }

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

        .data-badge-card .badge-number {
            font-size: 28px;
            font-weight: 800;
            color: var(--brand-dark);
            letter-spacing: -0.01em;
            line-height: 1.3;
        }

        .data-badge-card .badge-caption {
            font-size: 13px;
            color: var(--text-secondary);
            margin-top: 4px;
        }

        /* Subscribe CTA */
        .subscribe-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            box-shadow: var(--shadow-card);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 28px;
            flex-wrap: wrap;
        }

        .subscribe-card .subscribe-info {
            flex: 1;
            min-width: 240px;
        }

        .subscribe-card .subscribe-title {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-main);
            margin: 0 0 6px;
        }

        .subscribe-card .subscribe-desc {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
        }

        .subscribe-form {
            display: flex;
            gap: 10px;
            align-items: center;
            flex-shrink: 0;
            flex-wrap: wrap;
        }

        .subscribe-form input[type="email"] {
            padding: 10px 16px;
            border: 1px solid var(--border);
            border-radius: 12px;
            font-size: 14px;
            min-width: 240px;
            outline: none;
            background: #FAFAFB;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            color: var(--text-main);
        }

        .subscribe-form input[type="email"]:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(245, 130, 32, 0.15);
            background: #fff;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--brand-gradient);
            color: #fff;
            border-radius: var(--radius-full);
            padding: 10px 22px;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.02em;
            transition: transform var(--transition-fast), box-shadow var(--transition-fast), filter var(--transition-fast);
            white-space: nowrap;
            border: none;
        }

        .btn-primary:hover {
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(15, 76, 58, 0.3);
            filter: brightness(1.06);
            color: #fff;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: #fff;
            color: var(--brand-dark);
            border: 1px solid var(--brand-dark);
            border-radius: var(--radius-full);
            padding: 10px 22px;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.02em;
            transition: background-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
            white-space: nowrap;
        }

        .btn-secondary:hover {
            background-color: var(--accent-light);
            color: var(--accent-dark);
            border-color: var(--accent);
            transform: translateY(-1px);
        }

        /* Related Categories */
        .related-cat-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 18px 20px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-fast), transform var(--transition-fast), border-color var(--transition-fast);
            height: 100%;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
        }

        .related-cat-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
            border-color: rgba(15, 76, 58, 0.25);
        }

        .related-cat-card .cat-name {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 4px;
        }

        .related-cat-card .cat-desc {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* FAQ */
        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            margin-bottom: 12px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }

        .faq-item:hover {
            border-color: rgba(15, 76, 58, 0.3);
            box-shadow: var(--shadow-card);
        }

        .faq-item summary {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 15px;
            color: var(--text-main);
            cursor: pointer;
            list-style: none;
            position: relative;
            padding-right: 24px;
            user-select: none;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary .faq-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            flex-shrink: 0;
        }

        .faq-item summary::after {
            content: '+';
            position: absolute;
            right: 0;
            top: 50%;
            transform: translateY(-50%);
            font-size: 20px;
            color: var(--text-muted);
            transition: transform var(--transition-fast);
        }

        .faq-item[open] summary::after {
            transform: translateY(-50%) rotate(45deg);
            color: var(--accent);
        }

        .faq-item .faq-answer {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 12px 0 0 18px;
            padding-top: 12px;
            border-top: 1px solid var(--border);
        }

        /* Footer */
        .site-footer {
            background-color: var(--nav-bg);
            color: rgba(255, 255, 255, 0.85);
            padding: 48px 0 24px;
            margin-top: 0;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.2fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-brand-name {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.04em;
            margin-bottom: 8px;
        }

        .footer-brand-desc {
            font-size: 13px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.65);
            margin: 0;
            max-width: 300px;
        }

        .footer-links {
            display: flex;
            gap: 40px;
        }

        .footer-link-group h4 {
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 12px;
            letter-spacing: 0.03em;
        }

        .footer-link-group a {
            display: block;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 8px;
            transition: color var(--transition-fast);
        }

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

        .footer-contact h4 {
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 12px;
            letter-spacing: 0.03em;
        }

        .footer-contact p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            margin: 0 0 6px;
            line-height: 1.7;
        }

        .footer-legal {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            padding-top: 20px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.55);
        }

        .footer-legal a {
            color: rgba(255, 255, 255, 0.7);
            transition: color var(--transition-fast);
        }

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

        .footer-legal-sep {
            margin: 0 8px;
            opacity: 0.5;
        }

        /* Scroll reveal */
        .reveal {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }

        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .nav-group-label {
                display: none;
            }

            .nav-container {
                gap: 16px;
            }

            .nav-group {
                gap: 10px;
            }

            .nav-group+.nav-group {
                padding-left: 16px;
            }

            .footer-top {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .site-header .container {
                height: 60px;
                gap: 12px;
            }

            .nav-container {
                display: none;
            }

            .nav-cta-group {
                display: none;
            }

            .hamburger-btn {
                display: flex;
            }

            .mobile-nav.open {
                display: block;
            }

            .section-padding {
                padding: 48px 0;
            }

            .category-header {
                padding: 28px 24px;
            }

            .footer-top {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-links {
                gap: 28px;
                flex-wrap: wrap;
            }

            .breadcrumb {
                font-size: 12px;
                gap: 6px;
            }

            .subscribe-card {
                flex-direction: column;
                align-items: flex-start;
            }

            .subscribe-form {
                width: 100%;
            }

            .subscribe-form input[type="email"] {
                min-width: 0;
                flex: 1;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

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

            .category-header {
                padding: 22px 18px;
                border-radius: var(--radius-md);
            }

            .category-header h1 {
                font-size: 22px;
            }

            .data-badge-card .badge-number {
                font-size: 22px;
            }

            .data-badge {
                font-size: 16px;
                padding: 6px 14px;
            }

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

            .subscribe-form input[type="email"] {
                width: 100%;
                min-width: 0;
            }

            .btn-primary,
            .btn-secondary {
                width: 100%;
                justify-content: center;
            }

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

            .popular-item {
                flex-direction: column;
                align-items: flex-start;
            }

            .support-entry {
                flex-direction: column;
                align-items: flex-start;
            }

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

/* roulang page: category5 */
:root {
            --brand-dark: #0F4C3A;
            --brand-teal: #0B6B5A;
            --brand-gradient: linear-gradient(135deg, #0F4C3A 0%, #0B6B5A 100%);
            --accent: #F58220;
            --accent-light: #FFF3E8;
            --accent-dark: #D96A0E;
            --page-bg: #F5F6F7;
            --card-bg: #FFFFFF;
            --text-main: #1A1A1A;
            --text-secondary: #5A5F66;
            --text-muted: #8A9099;
            --border: #E4E7EB;
            --nav-bg: #2C3A4A;
            --success: #2E7D5B;
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-full: 999px;
            --shadow-card: 0 4px 16px rgba(15, 76, 58, 0.06);
            --shadow-card-hover: 0 8px 24px rgba(15, 76, 58, 0.12);
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'MiSans', 'HarmonyOS Sans SC', '思源黑体', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-main);
            background-color: var(--page-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .section-padding {
            padding: 64px 0;
        }
        .section-alt {
            background-color: #FFFFFF;
        }
        .section-subtle {
            background-color: #FAFAFB;
        }
        .site-header {
            background-color: var(--nav-bg);
            border-bottom: 2px solid rgba(255, 255, 255, 0.06);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.12);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 24px;
        }
        .logo-link {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--brand-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 14px;
            color: #fff;
            letter-spacing: 0;
        }
        .logo-text {
            font-size: 19px;
            font-weight: 800;
            color: #FFFFFF;
            letter-spacing: 0.04em;
            white-space: nowrap;
        }
        .nav-container {
            display: flex;
            align-items: center;
            gap: 28px;
            flex: 1;
            justify-content: center;
        }
        .nav-group {
            display: flex;
            align-items: center;
            gap: 20px;
        }
        .nav-group+.nav-group {
            border-left: 1px solid rgba(255, 255, 255, 0.18);
            padding-left: 28px;
        }
        .nav-group-label {
            font-size: 11px;
            color: rgba(255, 255, 255, 0.45);
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-right: 4px;
            user-select: none;
        }
        .nav-link {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
            letter-spacing: 0.02em;
            padding: 8px 10px;
            border-radius: 8px;
            transition: background-color var(--transition-fast), color var(--transition-fast);
            white-space: nowrap;
        }
        .nav-link:hover {
            background-color: rgba(255, 255, 255, 0.1);
            color: var(--accent);
        }
        .nav-link.active {
            background-color: rgba(245, 130, 32, 0.2);
            color: #FFFFFF;
            font-weight: 600;
        }
        .nav-cta-group {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-shrink: 0;
        }
        .nav-cta-link {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
            padding: 6px 10px;
            border-radius: 6px;
            transition: color var(--transition-fast), background-color var(--transition-fast);
            white-space: nowrap;
        }
        .nav-cta-link:hover {
            color: var(--accent);
            background-color: rgba(255, 255, 255, 0.08);
        }
        .hamburger-btn {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 5px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
        }
        .hamburger-btn span {
            width: 20px;
            height: 2px;
            background-color: #fff;
            border-radius: 2px;
            transition: all 0.3s ease;
        }
        .mobile-nav {
            display: none;
            background-color: var(--nav-bg);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 16px 0 20px;
        }
        .mobile-nav .container {
            flex-direction: column;
            gap: 8px;
        }
        .mobile-nav-group-label {
            font-size: 11px;
            color: rgba(255, 255, 255, 0.45);
            letter-spacing: 0.08em;
            text-transform: uppercase;
            padding: 8px 10px 4px;
        }
        .mobile-nav-link {
            display: block;
            font-size: 15px;
            color: rgba(255, 255, 255, 0.85);
            padding: 10px 12px;
            border-radius: 8px;
            transition: background-color var(--transition-fast), color var(--transition-fast);
        }
        .mobile-nav-link:hover {
            background-color: rgba(255, 255, 255, 0.1);
            color: var(--accent);
        }
        .mobile-nav-link.active {
            background-color: rgba(245, 130, 32, 0.2);
            color: #fff;
            font-weight: 600;
        }
        .section-title {
            font-size: clamp(22px, 3vw, 28px);
            font-weight: 700;
            letter-spacing: -0.01em;
            color: var(--text-main);
            margin: 0 0 12px;
            line-height: 1.35;
        }
        .section-desc {
            font-size: 15px;
            color: var(--text-secondary);
            margin: 0 0 32px;
            max-width: 720px;
            line-height: 1.75;
        }
        .card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: box-shadow var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
        }
        .card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(15, 76, 58, 0.25);
            transform: translateY(-2px);
        }
        .card-cover {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background-color: #EAECEE;
        }
        .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .card:hover .card-cover img {
            transform: scale(1.03);
        }
        .card-body {
            padding: 20px;
        }
        .card-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-main);
            margin: 0 0 8px;
            line-height: 1.4;
            transition: color var(--transition-fast);
        }
        .card:hover .card-title {
            color: var(--accent-dark);
        }
        .card-summary {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0 0 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            font-size: 12px;
            color: var(--text-muted);
        }
        .card-tag {
            display: inline-block;
            background: var(--accent-light);
            color: var(--accent-dark);
            font-size: 12px;
            font-weight: 600;
            padding: 2px 10px;
            border-radius: var(--radius-full);
            white-space: nowrap;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: var(--radius-full);
            font-size: 13px;
            font-weight: 600;
            white-space: nowrap;
        }
        .badge-orange {
            background: var(--accent);
            color: #fff;
        }
        .badge-orange-light {
            background: var(--accent-light);
            color: var(--accent-dark);
        }
        .badge-green {
            background: var(--success);
            color: #fff;
        }
        .badge-outline {
            background: transparent;
            color: var(--brand-dark);
            border: 1px solid var(--brand-dark);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-full);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.01em;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--brand-gradient);
            color: #fff;
        }
        .btn-primary:hover {
            filter: brightness(1.1);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(15, 76, 58, 0.25);
        }
        .btn-secondary {
            background: #fff;
            color: var(--brand-dark);
            border: 1px solid var(--brand-dark);
        }
        .btn-secondary:hover {
            background: var(--accent-light);
            border-color: var(--accent);
            color: var(--accent-dark);
        }
        .btn-accent {
            background: var(--accent);
            color: #fff;
        }
        .btn-accent:hover {
            background: var(--accent-dark);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(245, 130, 32, 0.3);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: var(--accent-dark);
        }
        .breadcrumb .sep {
            color: var(--text-muted);
            user-select: none;
        }
        .breadcrumb .current {
            color: var(--brand-dark);
            font-weight: 600;
        }
        .category-header {
            background: linear-gradient(135deg, #F0F4F2 0%, #F8FAF9 100%);
            border-bottom: 1px solid var(--border);
            padding: 48px 0 40px;
        }
        .category-header .container {
            display: flex;
            align-items: flex-start;
            gap: 32px;
            flex-wrap: wrap;
        }
        .category-header-text {
            flex: 1;
            min-width: 280px;
        }
        .category-header-text h1 {
            font-size: clamp(26px, 3.5vw, 34px);
            font-weight: 800;
            letter-spacing: -0.01em;
            color: var(--text-main);
            margin: 0 0 12px;
            line-height: 1.3;
        }
        .category-header-text .desc {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0;
            max-width: 700px;
        }
        .category-header-img {
            flex-shrink: 0;
            width: 240px;
            height: 160px;
            border-radius: var(--radius-md);
            overflow: hidden;
            background-color: #E4E7EB;
            box-shadow: var(--shadow-card);
        }
        .category-header-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .subnav {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin-top: 20px;
        }
        .subnav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: var(--radius-full);
            font-size: 14px;
            font-weight: 500;
            background: #fff;
            border: 1px solid var(--border);
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .subnav-link:hover {
            border-color: var(--accent);
            color: var(--accent-dark);
            background: var(--accent-light);
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .list-row {
            display: flex;
            gap: 16px;
            padding: 16px 0;
            border-bottom: 1px solid var(--border);
            align-items: flex-start;
        }
        .list-row:last-child {
            border-bottom: none;
        }
        .list-row-img {
            flex-shrink: 0;
            width: 100px;
            height: 68px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            background-color: #EAECEE;
        }
        .list-row-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .list-row-content {
            flex: 1;
            min-width: 0;
        }
        .list-row-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin: 0 0 4px;
            line-height: 1.4;
        }
        .list-row-desc {
            font-size: 13px;
            color: var(--text-secondary);
            margin: 0;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .stat-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 22px 18px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-fast), transform var(--transition-fast);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .stat-number {
            font-size: clamp(26px, 3vw, 34px);
            font-weight: 800;
            color: var(--brand-dark);
            letter-spacing: -0.01em;
            line-height: 1.2;
        }
        .stat-number .accent {
            color: var(--accent);
        }
        .stat-label {
            font-size: 13px;
            color: var(--text-secondary);
            margin-top: 6px;
        }
        .stat-note {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 4px;
        }
        .cta-box {
            background: #F8FAF9;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 36px 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }
        .cta-box-text h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            margin: 0 0 8px;
        }
        .cta-box-text p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
        }
        .form-row {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .form-input {
            flex: 1;
            min-width: 200px;
            padding: 12px 16px;
            border-radius: 12px;
            border: 1px solid var(--border);
            background: #fff;
            font-size: 14px;
            color: var(--text-main);
            outline: none;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }
        .form-input:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(245, 130, 32, 0.15);
        }
        .related-entry-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 20px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
        }
        .related-entry-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(15, 76, 58, 0.25);
            transform: translateY(-2px);
        }
        .related-entry-card .icon-box {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: var(--brand-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 12px;
            font-size: 22px;
            color: #fff;
            font-weight: 700;
        }
        .related-entry-card h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            margin: 0 0 6px;
        }
        .related-entry-card p {
            font-size: 13px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.6;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .faq-item details {
            padding: 0;
        }
        .faq-item summary {
            list-style: none;
            cursor: pointer;
            padding: 18px 22px;
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            transition: color var(--transition-fast), background-color var(--transition-fast);
            user-select: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary:hover {
            color: var(--accent-dark);
            background-color: #FAFAFB;
        }
        .faq-dot {
            flex-shrink: 0;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
        }
        .faq-answer {
            padding: 0 22px 18px 42px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin: 0;
        }
        .site-footer {
            background-color: var(--nav-bg);
            color: rgba(255, 255, 255, 0.85);
            padding: 48px 0 24px;
            margin-top: 0;
        }
        .footer-top {
            display: grid;
            grid-template-columns: 1.2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand-name {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 10px;
        }
        .footer-brand-desc {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.7;
            margin: 0;
            max-width: 280px;
        }
        .footer-links {
            display: flex;
            gap: 40px;
        }
        .footer-link-group h4 {
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 12px;
        }
        .footer-link-group a {
            display: block;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 8px;
            transition: color var(--transition-fast);
        }
        .footer-link-group a:hover {
            color: var(--accent);
        }
        .footer-contact h4 {
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 12px;
        }
        .footer-contact p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            margin: 0 0 6px;
            line-height: 1.6;
        }
        .footer-legal {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-legal a {
            color: rgba(255, 255, 255, 0.65);
            transition: color var(--transition-fast);
        }
        .footer-legal a:hover {
            color: var(--accent);
        }
        .footer-legal-sep {
            margin: 0 8px;
            color: rgba(255, 255, 255, 0.3);
        }
        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
            .nav-container {
                display: none;
            }
            .nav-cta-group {
                display: none;
            }
            .hamburger-btn {
                display: flex;
            }
            .mobile-nav.open {
                display: block;
            }
            .footer-top {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .section-padding {
                padding: 48px 0;
            }
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
            }
            .grid-2 {
                grid-template-columns: 1fr;
            }
            .category-header .container {
                flex-direction: column;
            }
            .category-header-img {
                width: 100%;
                height: 180px;
            }
            .cta-box {
                flex-direction: column;
                align-items: flex-start;
            }
            .form-row {
                width: 100%;
                flex-direction: column;
            }
            .form-input {
                width: 100%;
                min-width: unset;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-links {
                flex-direction: column;
                gap: 20px;
            }
            .footer-legal {
                flex-direction: column;
                align-items: flex-start;
            }
            .list-row {
                flex-direction: column;
                gap: 10px;
            }
            .list-row-img {
                width: 100%;
                height: 140px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .section-title {
                font-size: 20px;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
            .subnav-link {
                font-size: 13px;
                padding: 6px 12px;
            }
            .site-header .container {
                height: 60px;
                gap: 12px;
            }
            .logo-text {
                font-size: 17px;
            }
            .stat-card {
                padding: 16px 12px;
            }
            .stat-number {
                font-size: 24px;
            }
        }

/* roulang page: category6 */
:root {
            --brand-dark: #0F4C3A;
            --brand-teal: #0B6B5A;
            --brand-gradient: linear-gradient(135deg, #0F4C3A 0%, #0B6B5A 100%);
            --accent: #F58220;
            --accent-light: #FFF3E8;
            --accent-dark: #D96A0E;
            --page-bg: #F5F6F7;
            --card-bg: #FFFFFF;
            --text-main: #1A1A1A;
            --text-secondary: #5A5F66;
            --text-muted: #8A9099;
            --border: #E4E7EB;
            --nav-bg: #2C3A4A;
            --success: #2E7D5B;
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-full: 999px;
            --shadow-card: 0 4px 16px rgba(15, 76, 58, 0.06);
            --shadow-card-hover: 0 8px 24px rgba(15, 76, 58, 0.12);
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'MiSans', 'HarmonyOS Sans SC', '思源黑体', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-main);
            background-color: var(--page-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section-padding {
            padding: 64px 0;
        }

        .section-alt {
            background-color: #FFFFFF;
        }

        .section-subtle {
            background-color: #FAFAFB;
        }

        /* Navigation */
        .site-header {
            background-color: var(--nav-bg);
            border-bottom: 2px solid rgba(255, 255, 255, 0.06);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.12);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 24px;
        }

        .logo-link {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--brand-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 14px;
            color: #fff;
            letter-spacing: 0;
        }

        .logo-text {
            font-size: 19px;
            font-weight: 800;
            color: #FFFFFF;
            letter-spacing: 0.04em;
            white-space: nowrap;
        }

        .nav-container {
            display: flex;
            align-items: center;
            gap: 28px;
            flex: 1;
            justify-content: center;
        }

        .nav-group {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .nav-group + .nav-group {
            border-left: 1px solid rgba(255, 255, 255, 0.18);
            padding-left: 28px;
        }

        .nav-group-label {
            font-size: 11px;
            color: rgba(255, 255, 255, 0.45);
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-right: 4px;
            user-select: none;
        }

        .nav-link {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
            letter-spacing: 0.02em;
            padding: 8px 10px;
            border-radius: 8px;
            transition: background-color var(--transition-fast), color var(--transition-fast);
            white-space: nowrap;
        }

        .nav-link:hover {
            background-color: rgba(255, 255, 255, 0.1);
            color: var(--accent);
        }

        .nav-link.active {
            background-color: rgba(245, 130, 32, 0.2);
            color: #FFFFFF;
            font-weight: 600;
        }

        .nav-cta-group {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-shrink: 0;
        }

        .nav-cta-link {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
            padding: 6px 10px;
            border-radius: 6px;
            transition: color var(--transition-fast), background-color var(--transition-fast);
            white-space: nowrap;
        }

        .nav-cta-link:hover {
            color: var(--accent);
            background-color: rgba(255, 255, 255, 0.08);
        }

        .hamburger-btn {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 5px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            flex-shrink: 0;
        }

        .hamburger-btn span {
            width: 20px;
            height: 2px;
            background-color: #fff;
            border-radius: 2px;
            transition: all 0.3s ease;
        }

        .mobile-nav {
            display: none;
            background-color: var(--nav-bg);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 16px 0 20px;
        }

        .mobile-nav.open {
            display: block;
        }

        .mobile-nav .container {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .mobile-nav-group-label {
            font-size: 11px;
            color: rgba(255, 255, 255, 0.45);
            letter-spacing: 0.08em;
            text-transform: uppercase;
            padding: 8px 10px 0;
            user-select: none;
        }

        .mobile-nav .nav-link {
            display: block;
            width: 100%;
            text-align: left;
        }

        .mobile-nav .nav-link.active {
            background-color: rgba(245, 130, 32, 0.2);
            color: #FFFFFF;
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

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

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

        .breadcrumb-sep {
            color: var(--text-muted);
            user-select: none;
        }

        .breadcrumb-current {
            color: var(--brand-dark);
            font-weight: 600;
        }

        /* Category Header */
        .category-header {
            background: var(--brand-gradient);
            padding: 48px 0;
            position: relative;
            overflow: hidden;
        }

        .category-header::after {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 40%;
            height: 100%;
            background: url('/assets/images/1d513505a07e99a0.webp') center/cover no-repeat;
            opacity: 0.25;
            pointer-events: none;
        }

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

        .category-header h1 {
            font-size: 32px;
            font-weight: 800;
            color: #FFFFFF;
            margin: 0 0 12px;
            letter-spacing: -0.01em;
        }

        .category-header-desc {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.88);
            max-width: 720px;
            line-height: 1.85;
            margin: 0;
        }

        /* Cards */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: box-shadow var(--transition-smooth), transform var(--transition-smooth), border-color var(--transition-fast);
        }

        .card:hover {
            border-color: rgba(15, 76, 58, 0.25);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .card-image {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background-color: #EDF0F2;
        }

        .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }

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

        .card-body {
            padding: 20px 20px 22px;
        }

        .card-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-main);
            margin: 0 0 10px;
            line-height: 1.5;
            letter-spacing: -0.01em;
        }

        .card-title:hover {
            color: var(--accent);
        }

        .card-summary {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0 0 14px;
            line-height: 1.75;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

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

        .card-tag {
            display: inline-flex;
            align-items: center;
            padding: 3px 10px;
            border-radius: var(--radius-full);
            background: var(--accent-light);
            color: var(--accent-dark);
            font-size: 11px;
            font-weight: 600;
            letter-spacing: 0.02em;
        }

        .card-source {
            color: var(--text-muted);
        }

        .card-date {
            color: var(--text-muted);
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            border-radius: var(--radius-full);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.02em;
            transition: all var(--transition-fast);
            text-align: center;
            white-space: nowrap;
        }

        .btn:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }

        .btn-primary {
            background: var(--brand-gradient);
            color: #FFFFFF;
            border: none;
        }

        .btn-primary:hover {
            filter: brightness(1.1);
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(15, 76, 58, 0.2);
        }

        .btn-primary:active {
            transform: translateY(0);
            filter: brightness(0.95);
        }

        .btn-secondary {
            background: #FFFFFF;
            color: var(--brand-dark);
            border: 1px solid var(--brand-dark);
        }

        .btn-secondary:hover {
            background: var(--accent-light);
            border-color: var(--accent);
            color: var(--accent-dark);
            transform: translateY(-1px);
        }

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

        /* Badge */
        .badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 6px 14px;
            border-radius: var(--radius-full);
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 0.02em;
            min-height: 28px;
        }

        .badge-accent {
            background-color: var(--accent);
            color: #FFFFFF;
        }

        .badge-light-accent {
            background-color: var(--accent-light);
            color: var(--accent-dark);
        }

        .badge-green {
            background-color: rgba(46, 125, 91, 0.14);
            color: var(--success);
        }

        /* Section Titles */
        .section-heading {
            margin-bottom: 36px;
        }

        .section-heading h2 {
            font-size: 26px;
            font-weight: 800;
            color: var(--text-main);
            margin: 0 0 10px;
            letter-spacing: -0.01em;
        }

        .section-heading p {
            font-size: 15px;
            color: var(--text-secondary);
            margin: 0;
            max-width: 680px;
            line-height: 1.8;
        }

        /* List cards horizontal */
        .list-horizontal {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .list-horizontal-item {
            display: flex;
            gap: 16px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 14px;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-fast), transform var(--transition-fast), border-color var(--transition-fast);
            align-items: center;
        }

        .list-horizontal-item:hover {
            border-color: rgba(15, 76, 58, 0.25);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-1px);
        }

        .list-horizontal-thumb {
            width: 100px;
            height: 72px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
            background-color: #EDF0F2;
        }

        .list-horizontal-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .list-horizontal-body {
            flex: 1;
            min-width: 0;
        }

        .list-horizontal-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-main);
            margin: 0 0 6px;
            line-height: 1.5;
        }

        .list-horizontal-title:hover {
            color: var(--accent);
        }

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

        /* Stats */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .stat-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            text-align: center;
            box-shadow: var(--shadow-card);
        }

        .stat-number {
            font-size: 32px;
            font-weight: 800;
            color: var(--brand-dark);
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .stat-label {
            font-size: 13px;
            color: var(--text-secondary);
            font-weight: 500;
        }

        /* Support entry links */
        .support-entry-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }

        .support-entry {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 18px 20px;
            display: flex;
            align-items: center;
            gap: 12px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-fast);
        }

        .support-entry:hover {
            border-color: var(--accent);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-1px);
        }

        .support-entry-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--accent);
            flex-shrink: 0;
        }

        .support-entry-text {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
        }

        .support-entry:hover .support-entry-text {
            color: var(--accent-dark);
        }

        /* Subscribe CTA */
        .subscribe-cta {
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            box-shadow: var(--shadow-card);
            flex-wrap: wrap;
        }

        .subscribe-cta h2 {
            font-size: 22px;
            font-weight: 800;
            color: var(--text-main);
            margin: 0 0 6px;
            letter-spacing: -0.01em;
        }

        .subscribe-cta p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
        }

        .subscribe-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            align-items: center;
        }

        .subscribe-input {
            padding: 12px 18px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            font-size: 14px;
            min-width: 260px;
            background: #FFFFFF;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }

        .subscribe-input:focus {
            outline: none;
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(245, 130, 32, 0.12);
        }

        /* Related category entries */
        .related-cat-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .related-cat-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 18px 16px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-fast);
        }

        .related-cat-card:hover {
            border-color: var(--brand-teal);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .related-cat-icon {
            font-size: 28px;
            margin-bottom: 8px;
            display: block;
        }

        .related-cat-name {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-main);
        }

        .related-cat-card:hover .related-cat-name {
            color: var(--brand-dark);
        }

        .related-cat-desc {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 4px 20px;
            box-shadow: var(--shadow-card);
            transition: border-color var(--transition-fast);
        }

        .faq-item:hover {
            border-color: rgba(15, 76, 58, 0.25);
        }

        .faq-item summary {
            cursor: pointer;
            padding: 16px 0;
            font-size: 15px;
            font-weight: 700;
            color: var(--text-main);
            display: flex;
            align-items: center;
            gap: 10px;
            list-style: none;
            position: relative;
            transition: color var(--transition-fast);
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary::after {
            content: '+';
            position: absolute;
            right: 0;
            top: 50%;
            transform: translateY(-50%);
            font-size: 20px;
            color: var(--accent);
            font-weight: 600;
            transition: transform var(--transition-fast);
        }

        .faq-item[open] summary::after {
            transform: translateY(-50%) rotate(45deg);
        }

        .faq-item summary:hover {
            color: var(--accent-dark);
        }

        .faq-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            flex-shrink: 0;
        }

        .faq-answer {
            padding: 0 0 18px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            border-top: 1px solid var(--border);
            padding-top: 14px;
        }

        /* Footer */
        .site-footer {
            background-color: var(--nav-bg);
            color: rgba(255, 255, 255, 0.85);
            padding: 48px 0 0;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.4fr 1.2fr 1fr;
            gap: 40px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
        }

        .footer-brand-name {
            font-size: 20px;
            font-weight: 800;
            color: #FFFFFF;
            letter-spacing: 0.04em;
            margin-bottom: 10px;
        }

        .footer-brand-desc {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.8;
            margin: 0;
        }

        .footer-links {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }

        .footer-link-group h4 {
            font-size: 15px;
            font-weight: 700;
            color: #FFFFFF;
            margin: 0 0 12px;
            letter-spacing: 0.02em;
        }

        .footer-link-group a {
            display: block;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            padding: 4px 0;
            transition: color var(--transition-fast);
        }

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

        .footer-contact h4 {
            font-size: 15px;
            font-weight: 700;
            color: #FFFFFF;
            margin: 0 0 12px;
            letter-spacing: 0.02em;
        }

        .footer-contact p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            margin: 0 0 6px;
            line-height: 1.8;
        }

        .footer-legal {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 0;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.5);
            flex-wrap: wrap;
            gap: 8px;
        }

        .footer-legal a {
            color: rgba(255, 255, 255, 0.65);
            transition: color var(--transition-fast);
        }

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

        .footer-legal-sep {
            margin: 0 8px;
            color: rgba(255, 255, 255, 0.3);
        }

        /* View more button container */
        .view-more-container {
            display: flex;
            justify-content: flex-end;
            margin-top: 28px;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .related-cat-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .support-entry-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .footer-top {
                grid-template-columns: 1fr 1fr;
            }

            .footer-links {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-container {
                display: none;
            }

            .nav-cta-group {
                display: none;
            }

            .hamburger-btn {
                display: flex;
            }

            .site-header .container {
                height: 60px;
            }

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

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

            .related-cat-grid {
                grid-template-columns: 1fr 1fr;
            }

            .support-entry-grid {
                grid-template-columns: 1fr;
            }

            .footer-top {
                grid-template-columns: 1fr;
                gap: 28px;
            }

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

            .subscribe-cta {
                flex-direction: column;
                align-items: flex-start;
            }

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

            .category-header h1 {
                font-size: 26px;
            }

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

            .list-horizontal-item {
                flex-direction: row;
                align-items: center;
            }

            .list-horizontal-thumb {
                width: 72px;
                height: 56px;
            }

            .view-more-container {
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .section-padding {
                padding: 48px 0;
            }

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

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .stat-number {
                font-size: 26px;
            }

            .related-cat-grid {
                grid-template-columns: 1fr;
            }

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

            .category-header {
                padding: 36px 0;
            }

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

            .btn {
                padding: 10px 22px;
                font-size: 14px;
            }

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

            .subscribe-input {
                width: 100%;
                min-width: 0;
            }
        }