/* roulang page: index */
:root {
            --color-primary: #0f6e3f;
            --color-primary-dark: #0a5230;
            --color-primary-light: #e8f5ee;
            --color-accent: #f59e0b;
            --color-accent-dark: #d97706;
            --color-bg: #f8fafb;
            --color-surface: #ffffff;
            --color-text: #1a1f2b;
            --color-text-weak: #5f6b7a;
            --color-text-muted: #8b95a3;
            --color-border: #e2e7ed;
            --color-border-light: #eef1f5;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
            --shadow-lg: 0 8px 32px rgba(0,0,0,0.10);
            --shadow-xl: 0 12px 40px rgba(0,0,0,0.12);
            --transition-fast: 0.15s ease;
            --transition-base: 0.25s ease;
            --max-width: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
        }

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

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

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

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

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

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255,255,255,0.95);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
        }

        .logo-text {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: -0.02em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: color var(--transition-fast);
        }
        .logo-text:hover {
            color: var(--color-primary-dark);
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--color-primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 1rem;
            flex-shrink: 0;
        }

        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-desktop a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.925rem;
            color: var(--color-text-weak);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .nav-desktop a:hover {
            color: var(--color-primary);
            background: var(--color-primary-light);
        }
        .nav-desktop a.nav-active {
            color: var(--color-primary);
            background: var(--color-primary-light);
            font-weight: 600;
        }
        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 20px;
            background: var(--color-primary);
            color: #fff !important;
            border-radius: 25px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition-base);
            white-space: nowrap;
        }
        .nav-cta-btn:hover {
            background: var(--color-primary-dark);
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        /* Mobile Bottom Tab Nav */
        .bottom-tab-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1001;
            background: rgba(255,255,255,0.97);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-top: 1px solid var(--color-border-light);
            box-shadow: 0 -2px 16px rgba(0,0,0,0.07);
            padding: 6px 8px env(safe-area-inset-bottom, 8px);
        }
        .bottom-tab-inner {
            display: flex;
            justify-content: space-around;
            align-items: center;
            max-width: 500px;
            margin: 0 auto;
        }
        .bottom-tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 3px;
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            font-size: 0.7rem;
            font-weight: 500;
            color: var(--color-text-muted);
            transition: all var(--transition-fast);
            text-align: center;
            min-width: 52px;
        }
        .bottom-tab-item i {
            font-size: 1.2rem;
            transition: inherit;
        }
        .bottom-tab-item.tab-active {
            color: var(--color-primary);
            font-weight: 600;
        }
        .bottom-tab-item:hover {
            color: var(--color-primary);
        }

        /* Hero */
        .hero-section {
            position: relative;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            min-height: 580px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10,30,20,0.82) 0%, rgba(8,22,16,0.7) 50%, rgba(4,15,10,0.78) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
            padding: 60px 0;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255,255,255,0.13);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255,255,255,0.2);
            color: #fff;
            padding: 8px 18px;
            border-radius: 25px;
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 20px;
            letter-spacing: 0.02em;
        }
        .hero-badge .dot {
            width: 8px;
            height: 8px;
            background: var(--color-accent);
            border-radius: 50%;
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.5; transform: scale(1.5); }
        }
        .hero-title {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin: 0 0 16px;
            letter-spacing: -0.03em;
        }
        .hero-subtitle {
            font-size: 1.15rem;
            color: rgba(255,255,255,0.85);
            line-height: 1.7;
            margin: 0 0 32px;
            max-width: 560px;
        }
        .hero-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .btn-primary-hero {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            background: var(--color-primary);
            color: #fff;
            border-radius: 28px;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition-base);
            border: none;
            cursor: pointer;
        }
        .btn-primary-hero:hover {
            background: var(--color-primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }
        .btn-outline-hero {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            background: transparent;
            color: #fff;
            border-radius: 28px;
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid rgba(255,255,255,0.4);
            transition: all var(--transition-base);
            cursor: pointer;
        }
        .btn-outline-hero:hover {
            border-color: #fff;
            background: rgba(255,255,255,0.08);
            transform: translateY(-2px);
        }

        /* Section Common */
        .section {
            padding: 70px 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--color-primary);
            background: var(--color-primary-light);
            padding: 6px 16px;
            border-radius: 20px;
            margin-bottom: 12px;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-text);
            margin: 0 0 12px;
            letter-spacing: -0.02em;
        }
        .section-desc {
            font-size: 1rem;
            color: var(--color-text-weak);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }

        /* Feature Cards */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--color-primary);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform var(--transition-base);
        }
        .feature-card:hover {
            box-shadow: var(--shadow-lg);
            border-color: transparent;
            transform: translateY(-4px);
        }
        .feature-card:hover::before {
            transform: scaleX(1);
        }
        .feature-icon-wrap {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            font-size: 1.4rem;
        }
        .feature-icon-green {
            background: #e8f5ee;
            color: var(--color-primary);
        }
        .feature-icon-amber {
            background: #fef3c7;
            color: var(--color-accent-dark);
        }
        .feature-icon-blue {
            background: #e0f0ff;
            color: #2563eb;
        }
        .feature-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin: 0 0 8px;
            color: var(--color-text);
        }
        .feature-card p {
            font-size: 0.925rem;
            color: var(--color-text-weak);
            margin: 0;
            line-height: 1.65;
        }

        /* Category Cards */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .category-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .category-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: transparent;
        }
        .category-card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .category-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-base);
        }
        .category-card:hover .category-card-img img {
            transform: scale(1.06);
        }
        .category-card-body {
            padding: 22px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .category-card-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 14px;
            margin-bottom: 10px;
            background: var(--color-primary-light);
            color: var(--color-primary);
            align-self: flex-start;
        }
        .category-card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin: 0 0 8px;
            color: var(--color-text);
        }
        .category-card-body p {
            font-size: 0.875rem;
            color: var(--color-text-weak);
            margin: 0 0 16px;
            line-height: 1.6;
            flex: 1;
        }
        .category-card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 0.875rem;
            color: var(--color-primary);
            transition: gap var(--transition-fast);
        }
        .category-card-link:hover {
            gap: 10px;
        }

        /* CMS List */
        .cms-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .cms-item {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            padding: 22px 24px;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }
        .cms-item:hover {
            box-shadow: var(--shadow-md);
            border-color: transparent;
            transform: translateY(-2px);
        }
        .cms-item-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: var(--color-primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            color: var(--color-primary);
            font-size: 1rem;
        }
        .cms-item-content h4 {
            font-size: 0.95rem;
            font-weight: 600;
            margin: 0 0 6px;
            color: var(--color-text);
            line-height: 1.4;
        }
        .cms-item-content p {
            font-size: 0.825rem;
            color: var(--color-text-weak);
            margin: 0 0 8px;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .cms-item-meta {
            font-size: 0.75rem;
            color: var(--color-text-muted);
            display: flex;
            gap: 12px;
        }
        .cms-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 40px;
            color: var(--color-text-muted);
            font-size: 0.95rem;
            background: var(--color-surface);
            border-radius: var(--radius-md);
            border: 1px dashed var(--color-border);
        }

        /* Stats */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .stat-card {
            text-align: center;
            padding: 28px 16px;
            background: var(--color-surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: -0.02em;
        }
        .stat-label {
            font-size: 0.85rem;
            color: var(--color-text-weak);
            margin-top: 6px;
        }

        /* Process / Steps */
        .steps-list {
            display: flex;
            flex-wrap: wrap;
            gap: 0;
            counter-reset: step;
            position: relative;
        }
        .steps-list::before {
            content: '';
            position: absolute;
            top: 48px;
            left: 60px;
            right: 60px;
            height: 2px;
            background: var(--color-border);
            z-index: 0;
        }
        .step-item {
            flex: 1;
            min-width: 200px;
            text-align: center;
            position: relative;
            z-index: 1;
            padding: 0 16px 24px;
        }
        .step-circle {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--color-surface);
            border: 3px solid var(--color-primary);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.2rem;
            margin: 0 auto 16px;
            position: relative;
            z-index: 2;
            transition: all var(--transition-base);
        }
        .step-item:hover .step-circle {
            background: var(--color-primary);
            color: #fff;
            box-shadow: var(--shadow-md);
            transform: scale(1.08);
        }
        .step-item h4 {
            font-size: 1rem;
            font-weight: 700;
            margin: 0 0 6px;
            color: var(--color-text);
        }
        .step-item p {
            font-size: 0.85rem;
            color: var(--color-text-weak);
            margin: 0;
            line-height: 1.5;
        }

        /* FAQ */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .faq-item:hover {
            border-color: var(--color-primary);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            padding: 20px 24px;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--color-text);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            user-select: none;
            transition: color var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--color-primary);
        }
        .faq-question i {
            transition: transform var(--transition-base);
            color: var(--color-text-muted);
            flex-shrink: 0;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
            font-size: 0.875rem;
            color: var(--color-text-weak);
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--color-primary);
        }
        .faq-item.open {
            border-color: var(--color-primary);
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, #0a3d24 0%, #0f6e3f 50%, #0a5230 100%);
            border-radius: var(--radius-xl);
            padding: 56px 40px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }
        .cta-section > * {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin: 0 0 12px;
        }
        .cta-section p {
            font-size: 1rem;
            color: rgba(255,255,255,0.85);
            margin: 0 0 28px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }
        .btn-cta-white {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            background: #fff;
            color: var(--color-primary);
            border-radius: 28px;
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition-base);
            border: none;
            cursor: pointer;
        }
        .btn-cta-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0,0,0,0.2);
        }

        /* Footer */
        .site-footer {
            background: #111827;
            color: rgba(255,255,255,0.7);
            padding: 50px 0 30px;
            margin-top: 10px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-brand .logo-text-footer {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            display: block;
        }
        .footer-brand p {
            font-size: 0.85rem;
            line-height: 1.7;
            margin: 0;
            max-width: 280px;
        }
        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 14px;
            letter-spacing: 0.03em;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.6);
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 22px;
            text-align: center;
            font-size: 0.8rem;
            color: rgba(255,255,255,0.45);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .features-grid,
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .cms-list {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .hero-title {
                font-size: 2.2rem;
            }
            .steps-list::before {
                display: none;
            }
            .step-item {
                min-width: 140px;
                flex: 1 1 45%;
            }
        }

        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
            .nav-cta-btn.desktop-only {
                display: none;
            }
            .bottom-tab-nav {
                display: block;
            }
            body {
                padding-bottom: 80px;
            }
            .features-grid,
            .category-grid {
                grid-template-columns: 1fr;
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero-title {
                font-size: 1.8rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .hero-section {
                min-height: 460px;
            }
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .cta-section {
                padding: 36px 20px;
            }
            .cta-section h2 {
                font-size: 1.4rem;
            }
            .step-item {
                flex: 1 1 100%;
                min-width: 100%;
            }
            .steps-list {
                flex-direction: column;
                gap: 8px;
            }
            .header-inner {
                height: 56px;
            }
            .logo-text {
                font-size: 1.05rem;
            }
            .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 0.85rem;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.5rem;
            }
            .hero-buttons {
                flex-direction: column;
                width: 100%;
            }
            .hero-buttons > * {
                width: 100%;
                justify-content: center;
                text-align: center;
            }
            .stats-row {
                grid-template-columns: 1fr 1fr;
            }
            .stat-number {
                font-size: 1.6rem;
            }
            .bottom-tab-item {
                font-size: 0.65rem;
                padding: 4px 6px;
            }
            .bottom-tab-item i {
                font-size: 1rem;
            }
            .category-card-img {
                height: 160px;
            }
            .cms-item {
                flex-direction: column;
                gap: 10px;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #1a5276;
            --color-primary-dark: #123856;
            --color-accent: #ff5a1f;
            --color-accent-dark: #e6440d;
            --color-surface-light: #f8f9fb;
            --color-surface-card: #ffffff;
            --color-surface-muted: #f1f3f6;
            --color-surface-border: #e2e6ec;
            --color-text-primary: #1a1f2e;
            --color-text-secondary: #4a5568;
            --color-text-muted: #8895a7;
            --color-text-inverse: #ffffff;
            --radius-sm: 0.5rem;
            --radius-md: 0.75rem;
            --radius-lg: 1rem;
            --radius-xl: 1.25rem;
            --radius-2xl: 1.5rem;
            --shadow-card: 0 1px 3px rgba(10, 30, 54, 0.06), 0 4px 16px rgba(10, 30, 54, 0.05);
            --shadow-card-hover: 0 2px 8px rgba(10, 30, 54, 0.1), 0 8px 28px rgba(10, 30, 54, 0.08);
            --shadow-nav: 0 1px 4px rgba(10, 30, 54, 0.06);
            --transition-base: 0.2s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: "Inter", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text-primary);
            background-color: var(--color-surface-light);
            overflow-x: hidden;
        }

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

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

        button,
        input {
            font-family: inherit;
        }

        .container-custom {
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        @media (max-width: 768px) {
            .container-custom {
                padding-left: 1rem;
                padding-right: 1rem;
            }
        }

        /* ===== 导航样式 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-surface-border);
            box-shadow: var(--shadow-nav);
            transition: all var(--transition-smooth);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 1.5rem;
        }

        @media (max-width: 768px) {
            .header-inner {
                height: 56px;
            }
        }

        .logo-text {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 700;
            font-size: 1.2rem;
            color: var(--color-primary);
            white-space: nowrap;
            transition: opacity var(--transition-base);
            flex-shrink: 0;
        }

        .logo-text:hover {
            opacity: 0.85;
        }

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
            color: #fff;
            border-radius: var(--radius-md);
            font-weight: 800;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .nav-desktop {
            display: flex;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 0.25rem;
            align-items: center;
        }

        .nav-desktop li a {
            display: inline-block;
            padding: 0.5rem 0.9rem;
            border-radius: var(--radius-md);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .nav-desktop li a:hover {
            color: var(--color-primary);
            background-color: rgba(26, 82, 118, 0.05);
        }

        .nav-desktop li a.nav-active,
        .nav-desktop li a[aria-current="page"] {
            color: var(--color-primary);
            background-color: rgba(26, 82, 118, 0.08);
            font-weight: 600;
        }

        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.55rem 1.2rem;
            background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
            color: #fff !important;
            border-radius: 2rem;
            font-weight: 600;
            font-size: 0.88rem;
            white-space: nowrap;
            box-shadow: var(--shadow-btn, 0 2px 6px rgba(255, 90, 31, 0.25));
            transition: all var(--transition-smooth);
            flex-shrink: 0;
        }

        .nav-cta-btn:hover {
            box-shadow: var(--shadow-btn-hover, 0 4px 14px rgba(255, 90, 31, 0.35));
            transform: translateY(-1px);
            color: #fff !important;
        }

        @media (max-width: 900px) {
            .desktop-only {
                display: none !important;
            }
            .nav-desktop li a {
                padding: 0.4rem 0.55rem;
                font-size: 0.8rem;
            }
        }

        @media (max-width: 768px) {
            .nav-desktop {
                gap: 0;
            }
            .nav-desktop li a {
                padding: 0.35rem 0.45rem;
                font-size: 0.75rem;
                border-radius: 0.4rem;
            }
            .site-header {
                position: sticky;
                top: 0;
            }
        }

        @media (max-width: 520px) {
            .nav-desktop li a {
                padding: 0.3rem 0.35rem;
                font-size: 0.7rem;
            }
        }

        /* ===== 移动端底部Tab导航 ===== */
        .bottom-tab-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 99;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-top: 1px solid var(--color-surface-border);
            box-shadow: var(--shadow-tab, 0 -1px 8px rgba(10, 30, 54, 0.08));
            padding: 0.35rem 0.5rem;
            padding-bottom: max(0.35rem, env(safe-area-inset-bottom));
        }

        .bottom-tab-inner {
            display: flex;
            align-items: center;
            justify-content: space-around;
            max-width: 500px;
            margin: 0 auto;
        }

        .bottom-tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 0.2rem;
            padding: 0.35rem 0.4rem;
            border-radius: var(--radius-md);
            font-size: 0.68rem;
            font-weight: 500;
            color: var(--color-text-muted);
            transition: all var(--transition-base);
            cursor: pointer;
            text-decoration: none;
            min-width: 48px;
            text-align: center;
        }

        .bottom-tab-item i {
            font-size: 1.15rem;
            transition: color var(--transition-base);
        }

        .bottom-tab-item.tab-active {
            color: var(--color-accent);
            font-weight: 600;
        }

        .bottom-tab-item.tab-active i {
            color: var(--color-accent);
        }

        .bottom-tab-item:hover {
            color: var(--color-primary);
            background-color: rgba(26, 82, 118, 0.04);
        }

        .bottom-tab-item.tab-active:hover {
            color: var(--color-accent);
            background-color: rgba(255, 90, 31, 0.04);
        }

        @media (max-width: 768px) {
            .bottom-tab-nav {
                display: block;
            }
            body {
                padding-bottom: 80px;
            }
        }

        /* ===== Hero区域 ===== */
        .hero-category {
            position: relative;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            min-height: 420px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }

        .hero-category::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 30, 54, 0.82) 0%, rgba(10, 30, 54, 0.55) 50%, rgba(10, 30, 54, 0.7) 100%);
            z-index: 1;
        }

        .hero-category-content {
            position: relative;
            z-index: 2;
            width: 100%;
            padding: 3rem 0;
        }

        @media (max-width: 768px) {
            .hero-category {
                min-height: 340px;
            }
            .hero-category-content {
                padding: 2rem 0;
            }
        }

        /* ===== 卡片样式 ===== */
        .card-sport {
            background: var(--color-surface-card);
            border-radius: var(--radius-xl);
            padding: 1.5rem;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            border: 1px solid transparent;
            height: 100%;
        }

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

        .card-sport-img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
            border-radius: var(--radius-lg);
            margin-bottom: 1rem;
        }

        .card-icon-circle {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            font-size: 1.4rem;
            flex-shrink: 0;
        }

        /* ===== 板块间距 ===== */
        .section-py {
            padding-top: 4rem;
            padding-bottom: 4rem;
        }

        @media (max-width: 768px) {
            .section-py {
                padding-top: 2.5rem;
                padding-bottom: 2.5rem;
            }
        }

        /* ===== FAQ样式 ===== */
        .faq-item {
            background: var(--color-surface-card);
            border-radius: var(--radius-lg);
            padding: 1.25rem 1.5rem;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-surface-border);
            transition: all var(--transition-base);
            cursor: default;
        }

        .faq-item:hover {
            border-color: #c8d4e0;
            box-shadow: var(--shadow-card-hover);
        }

        .faq-item h4 {
            margin: 0 0 0.4rem 0;
            font-size: 1.05rem;
            color: var(--color-primary);
            font-weight: 600;
        }

        .faq-item p {
            margin: 0;
            color: var(--color-text-secondary);
            font-size: 0.95rem;
            line-height: 1.65;
        }

        /* ===== 页脚样式 ===== */
        .site-footer {
            background: #0e1f30;
            color: #c8d6e2;
            padding: 3rem 0 1.5rem;
            margin-top: 0;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 2rem;
        }

        @media (max-width: 900px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }
        }

        @media (max-width: 520px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.25rem;
            }
        }

        .site-footer .footer-brand p {
            margin-top: 0.6rem;
            font-size: 0.88rem;
            line-height: 1.6;
            color: #9aafc2;
        }

        .site-footer .logo-text-footer {
            font-weight: 700;
            font-size: 1.2rem;
            color: #ffffff;
        }

        .site-footer .footer-col h4 {
            color: #ffffff;
            font-weight: 600;
            margin-bottom: 0.8rem;
            font-size: 0.95rem;
        }

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

        .site-footer .footer-col ul li {
            margin-bottom: 0.45rem;
        }

        .site-footer .footer-col ul li a {
            color: #9aafc2;
            font-size: 0.88rem;
            transition: color var(--transition-base);
        }

        .site-footer .footer-col ul li a:hover {
            color: #ffffff;
        }

        .site-footer .footer-bottom {
            margin-top: 2rem;
            padding-top: 1.25rem;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            text-align: center;
            font-size: 0.82rem;
            color: #6e8599;
        }

        /* ===== 响应式补充 ===== */
        @media (max-width: 768px) {
            .card-sport {
                padding: 1rem;
            }
            .faq-item {
                padding: 1rem 1.1rem;
            }
            .faq-item h4 {
                font-size: 0.95rem;
            }
            .faq-item p {
                font-size: 0.85rem;
            }
        }

        /* ===== 动画 ===== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .animate-fade-in-up {
            animation: fadeInUp 0.6s ease forwards;
        }

        .animate-delay-100 {
            animation-delay: 0.1s;
            opacity: 0;
        }
        .animate-delay-200 {
            animation-delay: 0.2s;
            opacity: 0;
        }
        .animate-delay-300 {
            animation-delay: 0.3s;
            opacity: 0;
        }
        .animate-delay-400 {
            animation-delay: 0.4s;
            opacity: 0;
        }

/* roulang page: article */
:root {
            --color-brand-600: #2563eb;
            --color-brand-700: #1d4ed8;
            --color-brand-800: #1e40af;
            --color-accent-500: #f97316;
            --color-accent-600: #ea580c;
            --color-warm-50: #fafaf9;
            --color-warm-100: #f5f5f4;
            --color-warm-700: #44403c;
            --color-warm-800: #292524;
            --color-warm-900: #1c1917;
            --radius-sm: 0.5rem;
            --radius-md: 0.75rem;
            --radius-lg: 1rem;
            --radius-xl: 1.25rem;
            --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-card-hover: 0 10px 25px rgba(0, 0, 0, 0.08), 0 4px 10px rgba(0, 0, 0, 0.05);
            --shadow-nav: 0 1px 4px rgba(0, 0, 0, 0.06);
            --shadow-bottom-nav: 0 -2px 12px rgba(0, 0, 0, 0.08);
            --transition-base: 0.2s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            margin: 0;
            font-family: 'Inter', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            line-height: 1.6;
            color: var(--color-warm-800);
            background-color: #fafbfc;
            min-height: 100vh;
            -webkit-tap-highlight-color: transparent;
        }

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

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

        button {
            cursor: pointer;
            font-family: inherit;
        }

        input:focus-visible,
        button:focus-visible,
        a:focus-visible {
            outline: 2px solid var(--color-brand-600);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.25rem;
        }

        @media (min-width: 768px) {
            .container-custom {
                padding: 0 2rem;
            }
        }

        @media (min-width: 1024px) {
            .container-custom {
                padding: 0 2.5rem;
            }
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid #e5e7eb;
            box-shadow: var(--shadow-nav);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 1.5rem;
        }

        @media (min-width: 768px) {
            .header-inner {
                height: 72px;
            }
        }

        .logo-text {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 800;
            font-size: 1.25rem;
            color: var(--color-brand-700);
            white-space: nowrap;
            letter-spacing: -0.01em;
            transition: opacity var(--transition-base);
            flex-shrink: 0;
        }

        .logo-text:hover {
            opacity: 0.85;
        }

        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--color-brand-600), var(--color-brand-800));
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 900;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .nav-desktop {
            display: none;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 0.25rem;
            align-items: center;
        }

        @media (min-width: 1024px) {
            .nav-desktop {
                display: flex;
            }
        }

        .nav-desktop li a {
            display: inline-flex;
            align-items: center;
            padding: 0.5rem 0.9rem;
            border-radius: var(--radius-md);
            font-size: 0.925rem;
            font-weight: 500;
            color: var(--color-warm-700);
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .nav-desktop li a:hover {
            background-color: #f1f5f9;
            color: var(--color-brand-700);
        }

        .nav-desktop li a.nav-active {
            background-color: #eff6ff;
            color: var(--color-brand-700);
            font-weight: 600;
        }

        .nav-cta-btn {
            display: none;
            align-items: center;
            gap: 0.4rem;
            padding: 0.55rem 1.2rem;
            background: linear-gradient(135deg, var(--color-brand-600), var(--color-brand-700));
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            border-radius: var(--radius-md);
            white-space: nowrap;
            transition: all var(--transition-smooth);
            box-shadow: 0 2px 8px rgba(37, 99, 235, 0.25);
            flex-shrink: 0;
        }

        .nav-cta-btn:hover {
            background: linear-gradient(135deg, var(--color-brand-700), var(--color-brand-800));
            box-shadow: 0 4px 16px rgba(37, 99, 235, 0.35);
            transform: translateY(-1px);
        }

        @media (min-width: 1024px) {
            .nav-cta-btn {
                display: inline-flex;
            }
        }

        .desktop-only {
            display: none;
        }

        @media (min-width: 1024px) {
            .desktop-only {
                display: inline-flex;
            }
        }

        /* Bottom Mobile Nav */
        .bottom-nav {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 55;
            background: #fff;
            border-top: 1px solid #e5e7eb;
            box-shadow: var(--shadow-bottom-nav);
            display: flex;
            align-items: center;
            justify-content: space-around;
            padding: 0.35rem 0.25rem;
            padding-bottom: max(0.35rem, env(safe-area-inset-bottom));
            height: auto;
            min-height: 56px;
        }

        @media (min-width: 1024px) {
            .bottom-nav {
                display: none;
            }
        }

        .bottom-nav a {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 0.2rem;
            padding: 0.35rem 0.5rem;
            border-radius: var(--radius-sm);
            font-size: 0.7rem;
            font-weight: 500;
            color: #9ca3af;
            transition: all var(--transition-base);
            min-width: 52px;
            text-align: center;
            line-height: 1.2;
        }

        .bottom-nav a i {
            font-size: 1.2rem;
            transition: color var(--transition-base);
        }

        .bottom-nav a:hover,
        .bottom-nav a.nav-active-bottom {
            color: var(--color-brand-600);
        }

        .bottom-nav a.nav-active-bottom {
            font-weight: 600;
        }

        .bottom-nav a.nav-active-bottom i {
            color: var(--color-brand-600);
        }

        /* Article Page Specific */
        .article-banner {
            position: relative;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            min-height: 260px;
            display: flex;
            align-items: flex-end;
            padding: 3rem 0 2rem;
            overflow: hidden;
        }

        @media (min-width: 768px) {
            .article-banner {
                min-height: 340px;
                padding: 4rem 0 2.5rem;
            }
        }

        @media (min-width: 1024px) {
            .article-banner {
                min-height: 400px;
                padding: 5rem 0 3rem;
            }
        }

        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 23, 42, 0.88) 0%, rgba(15, 23, 42, 0.45) 50%, rgba(15, 23, 42, 0.2) 100%);
            z-index: 1;
        }

        .article-banner-content {
            position: relative;
            z-index: 2;
            width: 100%;
            max-width: 800px;
            margin: 0 auto;
        }

        .article-breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 0.75rem;
        }

        .article-breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
            transition: color var(--transition-base);
            font-weight: 500;
        }

        .article-breadcrumb a:hover {
            color: #fff;
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-breadcrumb .separator {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.65rem;
        }

        .article-banner .article-category-tag {
            display: inline-flex;
            align-items: center;
            padding: 0.3rem 0.8rem;
            background: var(--color-accent-500);
            color: #fff;
            font-size: 0.8rem;
            font-weight: 600;
            border-radius: 999px;
            margin-bottom: 0.75rem;
            letter-spacing: 0.02em;
        }

        .article-banner h1 {
            font-size: 1.6rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.35;
            margin: 0 0 0.6rem;
            letter-spacing: -0.015em;
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
        }

        @media (min-width: 768px) {
            .article-banner h1 {
                font-size: 2.1rem;
            }
        }

        @media (min-width: 1024px) {
            .article-banner h1 {
                font-size: 2.5rem;
            }
        }

        .article-meta-banner {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 1rem;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.7);
        }

        .article-meta-banner span {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
        }

        /* Article Body */
        .article-body-wrapper {
            background: #fff;
            border-radius: var(--radius-xl) var(--radius-xl) 0 0;
            margin-top: -2rem;
            position: relative;
            z-index: 3;
            padding: 2rem 1.25rem;
            box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.04);
        }

        @media (min-width: 768px) {
            .article-body-wrapper {
                padding: 2.5rem 2rem;
                margin-top: -2.5rem;
                border-radius: var(--radius-xl) var(--radius-xl) 0 0;
            }
        }

        @media (min-width: 1024px) {
            .article-body-wrapper {
                padding: 3rem 2.5rem;
                margin-top: -3rem;
            }
        }

        .article-content {
            max-width: 760px;
            margin: 0 auto;
            font-size: 1.05rem;
            line-height: 1.85;
            color: #374151;
        }

        .article-content h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: #1f2937;
            margin: 2rem 0 0.75rem;
            padding-top: 0.75rem;
            border-top: 2px solid #f3f4f6;
            letter-spacing: -0.01em;
        }

        .article-content h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: #1f2937;
            margin: 1.5rem 0 0.6rem;
            letter-spacing: -0.005em;
        }

        .article-content h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: #374151;
            margin: 1.25rem 0 0.5rem;
        }

        .article-content p {
            margin: 0 0 1rem;
        }

        .article-content img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius-lg);
            margin: 1.5rem auto;
            box-shadow: var(--shadow-card);
        }

        .article-content ul,
        .article-content ol {
            margin: 0.75rem 0 1.25rem;
            padding-left: 1.5rem;
        }

        .article-content li {
            margin-bottom: 0.4rem;
        }

        .article-content blockquote {
            border-left: 4px solid var(--color-brand-500);
            background: #f8fafc;
            padding: 1rem 1.25rem;
            margin: 1.5rem 0;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            color: #4b5563;
            font-style: italic;
        }

        .article-content a {
            color: var(--color-brand-600);
            font-weight: 500;
            text-decoration: underline;
            text-underline-offset: 3px;
            text-decoration-thickness: 1px;
        }

        .article-content a:hover {
            color: var(--color-brand-800);
        }

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
            font-size: 0.95rem;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .article-content table th,
        .article-content table td {
            padding: 0.75rem 1rem;
            border: 1px solid #e5e7eb;
            text-align: left;
        }

        .article-content table th {
            background: #f8fafc;
            font-weight: 600;
            color: #374151;
        }

        .article-content pre {
            background: #1e293b;
            color: #e2e8f0;
            padding: 1.25rem;
            border-radius: var(--radius-md);
            overflow-x: auto;
            font-size: 0.9rem;
            line-height: 1.6;
            margin: 1.25rem 0;
        }

        .article-content code {
            background: #f1f5f9;
            padding: 0.15rem 0.4rem;
            border-radius: 4px;
            font-size: 0.9em;
            color: #be123c;
            font-weight: 500;
        }

        .article-content pre code {
            background: none;
            color: inherit;
            padding: 0;
            font-weight: 400;
        }

        /* Related Posts */
        .related-section {
            max-width: 760px;
            margin: 2.5rem auto 0;
            padding-top: 2rem;
            border-top: 1px solid #e5e7eb;
        }

        .related-section h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: #1f2937;
            margin: 0 0 1.25rem;
            letter-spacing: -0.01em;
        }

        .related-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1rem;
        }

        @media (min-width: 640px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1.25rem;
            }
        }

        @media (min-width: 768px) {
            .related-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 1.5rem;
            }
        }

        .related-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            border: 1px solid #f3f4f6;
            display: flex;
            flex-direction: column;
        }

        .related-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
            border-color: #e5e7eb;
        }

        .related-card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            display: block;
        }

        .related-card-body {
            padding: 1rem 1.1rem 1.1rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .related-card-body .tag-sm {
            display: inline-block;
            font-size: 0.7rem;
            font-weight: 600;
            color: var(--color-accent-600);
            background: #fff7ed;
            padding: 0.2rem 0.6rem;
            border-radius: 999px;
            margin-bottom: 0.5rem;
            width: fit-content;
            letter-spacing: 0.02em;
        }

        .related-card-body h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #1f2937;
            margin: 0 0 0.4rem;
            line-height: 1.4;
            letter-spacing: -0.005em;
        }

        .related-card-body p {
            font-size: 0.8rem;
            color: #6b7280;
            margin: 0;
            line-height: 1.5;
        }

        .related-card-body a {
            color: inherit;
            transition: color var(--transition-base);
        }

        .related-card-body a:hover h4 {
            color: var(--color-brand-600);
        }

        /* CTA Section */
        .cta-section-article {
            background: linear-gradient(135deg, #1e3a8a 0%, #1d4ed8 40%, #2563eb 100%);
            border-radius: var(--radius-xl);
            padding: 2rem 1.5rem;
            text-align: center;
            max-width: 760px;
            margin: 2.5rem auto 1rem;
            position: relative;
            overflow: hidden;
        }

        .cta-section-article::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 160px;
            height: 160px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section-article::after {
            content: '';
            position: absolute;
            bottom: -30px;
            left: -30px;
            width: 120px;
            height: 120px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section-article h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 0.5rem;
            position: relative;
            z-index: 1;
            letter-spacing: -0.01em;
        }

        .cta-section-article p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 0.95rem;
            margin: 0 0 1.25rem;
            position: relative;
            z-index: 1;
            line-height: 1.6;
        }

        .cta-section-article .cta-btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
            justify-content: center;
            position: relative;
            z-index: 1;
        }

        .cta-btn-primary-white {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.7rem 1.5rem;
            background: #fff;
            color: var(--color-brand-700);
            font-weight: 600;
            font-size: 0.95rem;
            border-radius: var(--radius-md);
            transition: all var(--transition-smooth);
            box-shadow: 0 4px 14px rgba(0, 0, 0, 0.12);
            white-space: nowrap;
        }

        .cta-btn-primary-white:hover {
            background: #f0f4ff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
        }

        .cta-btn-outline-white {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.7rem 1.5rem;
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            border-radius: var(--radius-md);
            border: 2px solid rgba(255, 255, 255, 0.5);
            transition: all var(--transition-smooth);
            white-space: nowrap;
        }

        .cta-btn-outline-white:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            transform: translateY(-2px);
        }

        /* Not Found State */
        .not-found-wrapper {
            min-height: 55vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 3rem 1.25rem;
        }

        .not-found-card {
            max-width: 480px;
            width: 100%;
            background: #fff;
            border-radius: var(--radius-xl);
            padding: 2.5rem 2rem;
            box-shadow: var(--shadow-card);
            border: 1px solid #f3f4f6;
        }

        .not-found-icon {
            width: 80px;
            height: 80px;
            background: #f1f5f9;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.25rem;
            font-size: 2rem;
            color: #94a3b8;
        }

        .not-found-card h2 {
            font-size: 1.4rem;
            font-weight: 700;
            color: #1f2937;
            margin: 0 0 0.5rem;
        }

        .not-found-card p {
            color: #6b7280;
            font-size: 0.95rem;
            margin: 0 0 1.5rem;
            line-height: 1.6;
        }

        .btn-back-home {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.7rem 1.8rem;
            background: var(--color-brand-600);
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            border-radius: var(--radius-md);
            transition: all var(--transition-smooth);
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
        }

        .btn-back-home:hover {
            background: var(--color-brand-700);
            box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
            transform: translateY(-2px);
        }

        /* Footer */
        .site-footer {
            background: #1e293b;
            color: #cbd5e1;
            padding: 3rem 0 5rem;
            margin-top: 0;
        }

        @media (min-width: 1024px) {
            .site-footer {
                padding: 3.5rem 0 2.5rem;
            }
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
        }

        @media (min-width: 640px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr;
                gap: 2rem;
            }
        }

        @media (min-width: 1024px) {
            .footer-grid {
                grid-template-columns: 2.5fr 1fr 1fr 1fr;
                gap: 2.5rem;
            }
        }

        .footer-brand .logo-text-footer {
            font-size: 1.15rem;
            font-weight: 700;
            color: #fff;
            display: block;
            margin-bottom: 0.6rem;
        }

        .footer-brand p {
            font-size: 0.875rem;
            color: #94a3b8;
            line-height: 1.65;
            margin: 0;
        }

        .footer-col h4 {
            font-size: 0.85rem;
            font-weight: 600;
            color: #e2e8f0;
            margin: 0 0 0.75rem;
            letter-spacing: 0.03em;
            text-transform: uppercase;
        }

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

        .footer-col ul li {
            margin-bottom: 0.45rem;
        }

        .footer-col ul li a {
            font-size: 0.875rem;
            color: #94a3b8;
            transition: color var(--transition-base);
            padding: 0.15rem 0;
            display: inline-block;
        }

        .footer-col ul li a:hover {
            color: #fff;
        }

        .footer-bottom {
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid #334155;
            font-size: 0.8rem;
            color: #64748b;
            text-align: center;
            letter-spacing: 0.02em;
        }

        @media (min-width: 1024px) {
            .footer-bottom {
                text-align: left;
            }
        }

        /* Mobile body padding for bottom nav */
        @media (max-width: 1023px) {
            body {
                padding-bottom: 72px;
            }

            .site-footer {
                padding-bottom: 5.5rem;
            }
        }

        /* Smooth scroll offset for sticky header */
        @media (min-width: 1024px) {
            html {
                scroll-padding-top: 80px;
            }
        }

/* roulang page: category2 */
:root {
            --brand-600: #1d4ed8;
            --brand-700: #1e40af;
            --brand-800: #1a365d;
            --accent-500: #f97316;
            --accent-600: #ea580c;
            --gray-50: #f9fafb;
            --gray-100: #f3f4f6;
            --gray-200: #e5e7eb;
            --gray-300: #d1d5db;
            --gray-400: #9ca3af;
            --gray-500: #6b7280;
            --gray-600: #4b5563;
            --gray-700: #374151;
            --gray-800: #1f2937;
            --gray-900: #111827;
            --white: #ffffff;
            --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
            --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
            --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: "Inter", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
            line-height: 1.7;
            color: var(--gray-800);
            background-color: var(--white);
            min-height: 100vh;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }

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

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--gray-200);
            box-shadow: var(--shadow-sm);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
        }

        .logo-text {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--brand-700);
            letter-spacing: -0.01em;
            white-space: nowrap;
            transition: color 0.2s ease;
        }

        .logo-text:hover {
            color: var(--brand-600);
        }

        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--brand-600), var(--brand-800));
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 800;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .nav-desktop {
            display: flex;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 4px;
        }

        .nav-desktop li a {
            display: block;
            padding: 8px 16px;
            border-radius: 8px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--gray-600);
            transition: all 0.2s ease;
            white-space: nowrap;
        }

        .nav-desktop li a:hover {
            color: var(--brand-600);
            background: var(--gray-50);
        }

        .nav-desktop li a.nav-active {
            color: var(--brand-600);
            background: #eff6ff;
            font-weight: 600;
        }

        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 20px;
            background: var(--accent-500);
            color: #fff;
            border-radius: 8px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all 0.25s ease;
            white-space: nowrap;
            box-shadow: 0 2px 6px rgba(249, 115, 22, 0.3);
        }

        .nav-cta-btn:hover {
            background: var(--accent-600);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(249, 115, 22, 0.4);
            color: #fff;
        }

        .nav-cta-btn i {
            transition: transform 0.25s ease;
        }

        .nav-cta-btn:hover i {
            transform: translateX(3px);
        }

        /* 移动端底部 Tab */
        .mobile-bottom-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 200;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-top: 1px solid var(--gray-200);
            box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.06);
            padding: 6px 0 env(safe-area-inset-bottom, 6px);
        }

        .mobile-bottom-nav .bottom-tabs {
            display: flex;
            list-style: none;
            margin: 0;
            padding: 0;
            justify-content: space-around;
            align-items: center;
        }

        .mobile-bottom-nav .bottom-tabs li {
            flex: 1;
            text-align: center;
        }

        .mobile-bottom-nav .bottom-tabs a {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 3px;
            padding: 6px 4px;
            font-size: 0.68rem;
            font-weight: 500;
            color: var(--gray-500);
            transition: color 0.2s ease;
            border-radius: 8px;
        }

        .mobile-bottom-nav .bottom-tabs a i {
            font-size: 1.2rem;
            transition: color 0.2s ease;
        }

        .mobile-bottom-nav .bottom-tabs a.tab-active {
            color: var(--brand-600);
            font-weight: 600;
        }

        .mobile-bottom-nav .bottom-tabs a.tab-active i {
            color: var(--brand-600);
        }

        .mobile-bottom-nav .bottom-tabs a:hover {
            color: var(--brand-600);
        }

        /* Footer */
        .site-footer {
            background: var(--gray-900);
            color: #cbd5e1;
            padding: 56px 0 28px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }

        .footer-brand .logo-text-footer {
            display: inline-block;
            font-weight: 700;
            font-size: 1.2rem;
            color: #f1f5f9;
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }

        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: #94a3b8;
            margin: 0;
            max-width: 280px;
        }

        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 600;
            color: #e2e8f0;
            margin: 0 0 14px;
            letter-spacing: 0.02em;
        }

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

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

        .footer-col ul li a {
            font-size: 0.875rem;
            color: #94a3b8;
            transition: color 0.2s ease;
        }

        .footer-col ul li a:hover {
            color: #e2e8f0;
        }

        .footer-bottom {
            border-top: 1px solid #334155;
            padding-top: 22px;
            text-align: center;
            font-size: 0.8rem;
            color: #64748b;
        }

        /* 通用板块间距 */
        .section-spacing {
            padding: 64px 0;
        }

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

        /* 卡片 hover 效果 */
        .card-hover {
            transition: all 0.3s ease;
        }

        .card-hover:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-xl);
        }

        /* FAQ 样式 */
        .faq-item {
            border: 1px solid var(--gray-200);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all 0.25s ease;
            background: var(--white);
        }

        .faq-item:hover {
            border-color: #93c5fd;
            box-shadow: var(--shadow-md);
        }

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 18px 22px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--gray-800);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            text-align: left;
            transition: color 0.2s ease;
            gap: 12px;
        }

        .faq-question:hover {
            color: var(--brand-600);
        }

        .faq-answer {
            padding: 0 22px 18px;
            font-size: 0.95rem;
            color: var(--gray-600);
            line-height: 1.7;
            display: none;
        }

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

        .faq-item.open .faq-question {
            color: var(--brand-600);
        }

        .faq-icon {
            flex-shrink: 0;
            transition: transform 0.3s ease;
            font-size: 0.85rem;
            color: var(--gray-400);
        }

        .faq-item.open .faq-icon {
            transform: rotate(180deg);
            color: var(--brand-600);
        }

        /* 步骤流程 */
        .step-number {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--brand-600), var(--brand-800));
            color: #fff;
            font-weight: 700;
            font-size: 1.2rem;
            flex-shrink: 0;
            box-shadow: 0 4px 10px rgba(29, 78, 216, 0.3);
        }

        .step-connector {
            width: 2px;
            height: 36px;
            background: var(--gray-300);
            margin: 4px auto;
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .section-spacing {
                padding: 48px 0;
            }
        }

        @media (max-width: 768px) {
            .desktop-only {
                display: none !important;
            }
            .header-inner {
                height: 56px;
            }
            .logo-text {
                font-size: 1.05rem;
            }
            .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 0.9rem;
            }
            .nav-desktop {
                gap: 0;
            }
            .nav-desktop li a {
                padding: 6px 10px;
                font-size: 0.8rem;
                border-radius: 6px;
            }
            .mobile-bottom-nav {
                display: block;
            }
            body {
                padding-bottom: 72px;
            }
            .site-footer {
                padding-bottom: 90px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .section-spacing {
                padding: 36px 0;
            }
            .section-spacing-sm {
                padding: 28px 0;
            }
            .faq-question {
                font-size: 0.9rem;
                padding: 14px 16px;
            }
            .faq-answer {
                padding: 0 16px 14px;
                font-size: 0.85rem;
            }
            .step-number {
                width: 38px;
                height: 38px;
                font-size: 1rem;
            }
        }

        @media (max-width: 520px) {
            .container-custom {
                padding-left: 14px;
                padding-right: 14px;
            }
            .header-inner {
                height: 50px;
            }
            .logo-text {
                font-size: 0.9rem;
                gap: 5px;
            }
            .logo-icon {
                width: 26px;
                height: 26px;
                font-size: 0.75rem;
            }
            .nav-desktop li a {
                padding: 4px 7px;
                font-size: 0.7rem;
                border-radius: 5px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .section-spacing {
                padding: 28px 0;
            }
            .section-spacing-sm {
                padding: 20px 0;
            }
            .faq-question {
                font-size: 0.85rem;
                padding: 12px 14px;
            }
            .faq-answer {
                padding: 0 14px 12px;
                font-size: 0.8rem;
            }
            .step-number {
                width: 32px;
                height: 32px;
                font-size: 0.85rem;
            }
            .step-connector {
                height: 24px;
            }
        }

        @media (min-width: 769px) {
            .mobile-bottom-nav {
                display: none !important;
            }
            body {
                padding-bottom: 0;
            }
            .site-footer {
                padding-bottom: 28px;
            }
        }

/* roulang page: category3 */
:root {
            --brand-800: #1e3a5f;
            --brand-700: #1d4ed8;
            --brand-600: #2563eb;
            --accent-500: #f97316;
            --accent-400: #fb923c;
            --warm-500: #f59e0b;
            --gray-50: #f9fafb;
            --gray-100: #f3f4f6;
            --gray-200: #e5e7eb;
            --gray-300: #d1d5db;
            --gray-400: #9ca3af;
            --gray-500: #6b7280;
            --gray-600: #4b5563;
            --gray-700: #374151;
            --gray-800: #1f2937;
            --gray-900: #111827;
            --white: #ffffff;
            --shadow-card: 0 1px 3px rgba(0,0,0,0.06), 0 4px 16px rgba(0,0,0,0.05);
            --shadow-card-hover: 0 2px 6px rgba(0,0,0,0.08), 0 8px 28px rgba(0,0,0,0.09);
            --shadow-nav: 0 1px 4px rgba(0,0,0,0.06);
            --shadow-tab: 0 -2px 12px rgba(0,0,0,0.07);
            --radius-sm: 0.5rem;
            --radius-md: 0.75rem;
            --radius-lg: 0.875rem;
            --radius-xl: 1rem;
            --radius-2xl: 1.25rem;
            --transition-fast: 180ms ease;
            --transition-normal: 260ms ease;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            line-height: 1.65;
            color: var(--gray-800);
            background-color: #fafbfc;
            min-height: 100vh;
        }

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

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

        button,
        input {
            font-family: inherit;
        }

        .container-custom {
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        @media (min-width: 640px) {
            .container-custom {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
        }

        @media (min-width: 1024px) {
            .container-custom {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        /* ===== Header / Navigation ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255,255,255,0.94);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            box-shadow: var(--shadow-nav);
            border-bottom: 1px solid var(--gray-200);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 60px;
            gap: 1.25rem;
        }

        @media (min-width: 1024px) {
            .header-inner {
                height: 68px;
                gap: 2rem;
            }
        }

        .logo-text {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--brand-800);
            white-space: nowrap;
            letter-spacing: -0.01em;
            transition: opacity var(--transition-fast);
            flex-shrink: 0;
        }

        .logo-text:hover {
            opacity: 0.82;
        }

        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--brand-700), var(--brand-800));
            color: #fff;
            font-weight: 800;
            font-size: 1rem;
            letter-spacing: 0;
            flex-shrink: 0;
        }

        .nav-desktop {
            display: none;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 0.25rem;
        }

        @media (min-width: 1024px) {
            .nav-desktop {
                display: flex;
                align-items: center;
            }
        }

        .nav-desktop a {
            display: inline-block;
            padding: 0.5rem 0.85rem;
            border-radius: var(--radius-md);
            font-size: 0.925rem;
            font-weight: 500;
            color: var(--gray-700);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .nav-desktop a:hover {
            color: var(--brand-700);
            background-color: #eff6ff;
        }

        .nav-desktop a.nav-active,
        .nav-desktop a[aria-current="page"] {
            color: var(--brand-700);
            background-color: #eff6ff;
            font-weight: 600;
        }

        .nav-cta-btn {
            display: none;
            align-items: center;
            gap: 0.4rem;
            padding: 0.55rem 1.2rem;
            border-radius: var(--radius-md);
            font-size: 0.875rem;
            font-weight: 600;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-500), #e65c00);
            white-space: nowrap;
            transition: all var(--transition-fast);
            box-shadow: 0 2px 8px rgba(249,115,22,0.25);
            flex-shrink: 0;
        }

        .nav-cta-btn:hover {
            box-shadow: 0 4px 16px rgba(249,115,22,0.35);
            transform: translateY(-1px);
        }

        @media (min-width: 1024px) {
            .nav-cta-btn.desktop-only {
                display: inline-flex;
            }
        }

        /* ===== Mobile Bottom Tab Navigation ===== */
        .bottom-tab-nav {
            display: flex;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 55;
            background: rgba(255,255,255,0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            box-shadow: var(--shadow-tab);
            border-top: 1px solid var(--gray-200);
            padding: 0.35rem 0.25rem;
            padding-bottom: calc(0.35rem + env(safe-area-inset-bottom, 0px));
            justify-content: space-around;
            align-items: center;
        }

        @media (min-width: 1024px) {
            .bottom-tab-nav {
                display: none;
            }
        }

        .bottom-tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 0.2rem;
            padding: 0.35rem 0.5rem;
            border-radius: var(--radius-md);
            font-size: 0.7rem;
            font-weight: 500;
            color: var(--gray-500);
            transition: all var(--transition-fast);
            min-width: 52px;
            text-align: center;
            cursor: pointer;
            -webkit-tap-highlight-color: transparent;
            user-select: none;
        }

        .bottom-tab-item i {
            font-size: 1.2rem;
            transition: color var(--transition-fast);
        }

        .bottom-tab-item.tab-active {
            color: var(--brand-700);
            font-weight: 600;
        }

        .bottom-tab-item.tab-active i {
            color: var(--brand-700);
        }

        .bottom-tab-item:active {
            transform: scale(0.94);
        }

        /* ===== Hero Section ===== */
        .hero-section {
            position: relative;
            background: linear-gradient(160deg, #0f1f36 0%, #1e3a5f 40%, #1a3352 100%);
            overflow: hidden;
            padding: 3rem 0 3.5rem;
        }

        @media (min-width: 768px) {
            .hero-section {
                padding: 4.5rem 0 5rem;
            }
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.22;
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
            margin: 0 auto;
            text-align: center;
        }

        .hero-badge {
            display: inline-block;
            padding: 0.3rem 0.9rem;
            border-radius: 999px;
            font-size: 0.8rem;
            font-weight: 600;
            background: rgba(255,255,255,0.13);
            color: #e2e8f0;
            border: 1px solid rgba(255,255,255,0.18);
            letter-spacing: 0.02em;
            margin-bottom: 1rem;
        }

        @media (min-width: 768px) {
            .hero-badge {
                font-size: 0.85rem;
                padding: 0.35rem 1rem;
                margin-bottom: 1.25rem;
            }
        }

        .hero-title {
            font-size: 1.75rem;
            font-weight: 800;
            color: #ffffff;
            line-height: 1.25;
            margin: 0 0 0.85rem;
            letter-spacing: -0.02em;
        }

        @media (min-width: 640px) {
            .hero-title {
                font-size: 2.25rem;
            }
        }

        @media (min-width: 768px) {
            .hero-title {
                font-size: 2.75rem;
                margin-bottom: 1rem;
            }
        }

        @media (min-width: 1024px) {
            .hero-title {
                font-size: 3rem;
            }
        }

        .hero-subtitle {
            font-size: 1rem;
            color: #cbd5e1;
            line-height: 1.6;
            margin: 0 0 1.5rem;
            max-width: 540px;
            margin-left: auto;
            margin-right: auto;
        }

        @media (min-width: 768px) {
            .hero-subtitle {
                font-size: 1.1rem;
                margin-bottom: 2rem;
            }
        }

        .hero-btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
            justify-content: center;
        }

        .btn-primary-hero {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.7rem 1.6rem;
            border-radius: var(--radius-lg);
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-500), #e65c00);
            box-shadow: 0 4px 14px rgba(249,115,22,0.35);
            transition: all var(--transition-normal);
            border: none;
            cursor: pointer;
        }

        .btn-primary-hero:hover {
            box-shadow: 0 6px 22px rgba(249,115,22,0.45);
            transform: translateY(-2px);
        }

        .btn-outline-hero {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.7rem 1.6rem;
            border-radius: var(--radius-lg);
            font-size: 0.95rem;
            font-weight: 600;
            color: #e2e8f0;
            background: transparent;
            border: 1.5px solid rgba(255,255,255,0.35);
            transition: all var(--transition-normal);
            cursor: pointer;
        }

        .btn-outline-hero:hover {
            background: rgba(255,255,255,0.08);
            border-color: rgba(255,255,255,0.55);
            color: #fff;
        }

        /* ===== Section Common ===== */
        .section {
            padding: 2.5rem 0;
        }

        @media (min-width: 768px) {
            .section {
                padding: 3.5rem 0;
            }
        }

        @media (min-width: 1024px) {
            .section {
                padding: 4.5rem 0;
            }
        }

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

        @media (min-width: 768px) {
            .section-header {
                margin-bottom: 2.5rem;
            }
        }

        .section-tag {
            display: inline-block;
            padding: 0.25rem 0.8rem;
            border-radius: 999px;
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--brand-700);
            background: #eff6ff;
            letter-spacing: 0.02em;
            margin-bottom: 0.6rem;
        }

        .section-title {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--gray-900);
            margin: 0 0 0.5rem;
            letter-spacing: -0.01em;
        }

        @media (min-width: 768px) {
            .section-title {
                font-size: 1.75rem;
            }
        }

        @media (min-width: 1024px) {
            .section-title {
                font-size: 2rem;
            }
        }

        .section-desc {
            font-size: 0.95rem;
            color: var(--gray-500);
            max-width: 560px;
            margin: 0 auto;
            line-height: 1.6;
        }

        /* ===== Cards Grid ===== */
        .cards-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1rem;
        }

        @media (min-width: 640px) {
            .cards-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1.25rem;
            }
        }

        @media (min-width: 1024px) {
            .cards-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 1.5rem;
            }
        }

        .cards-grid-4 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1rem;
        }

        @media (min-width: 768px) {
            .cards-grid-4 {
                grid-template-columns: repeat(4, 1fr);
                gap: 1.25rem;
            }
        }

        /* ===== Card Component ===== */
        .card {
            background: #fff;
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: all var(--transition-normal);
            display: flex;
            flex-direction: column;
            border: 1px solid transparent;
        }

        .card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: #e5e7eb;
        }

        .card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: #f3f4f6;
        }

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

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

        .card-badge {
            position: absolute;
            top: 0.75rem;
            left: 0.75rem;
            padding: 0.25rem 0.65rem;
            border-radius: 999px;
            font-size: 0.72rem;
            font-weight: 600;
            background: rgba(0,0,0,0.6);
            color: #fff;
            backdrop-filter: blur(4px);
            letter-spacing: 0.01em;
        }

        .card-badge.hot {
            background: rgba(249,115,22,0.88);
        }

        .card-body {
            padding: 1rem 1.1rem 1.25rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        @media (min-width: 768px) {
            .card-body {
                padding: 1.15rem 1.25rem 1.4rem;
            }
        }

        .card-category {
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--accent-500);
            text-transform: uppercase;
            letter-spacing: 0.03em;
            margin-bottom: 0.3rem;
        }

        .card-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--gray-900);
            margin: 0 0 0.4rem;
            line-height: 1.35;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        @media (min-width: 768px) {
            .card-title {
                font-size: 1.05rem;
            }
        }

        .card-desc {
            font-size: 0.85rem;
            color: var(--gray-500);
            line-height: 1.55;
            margin: 0 0 0.75rem;
            flex: 1;
        }

        .card-meta {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 0.78rem;
            color: var(--gray-400);
            flex-wrap: wrap;
        }

        .card-meta i {
            font-size: 0.7rem;
        }

        .card-rating {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            color: var(--warm-500);
            font-weight: 600;
            font-size: 0.82rem;
        }

        .card-rating i {
            font-size: 0.75rem;
        }

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--brand-700);
            margin-top: 0.6rem;
            transition: gap var(--transition-fast);
        }

        .card-link:hover {
            gap: 0.55rem;
            color: var(--brand-600);
        }

        /* ===== Criteria / Feature Block ===== */
        .criteria-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1rem;
        }

        @media (min-width: 640px) {
            .criteria-grid {
                grid-template-columns: repeat(4, 1fr);
                gap: 1.25rem;
            }
        }

        .criteria-card {
            background: #fff;
            border-radius: var(--radius-xl);
            padding: 1.25rem 1rem;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-normal);
            border: 1px solid transparent;
        }

        .criteria-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: #e5e7eb;
            transform: translateY(-2px);
        }

        .criteria-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 12px;
            font-size: 1.3rem;
            margin-bottom: 0.75rem;
        }

        .criteria-icon.blue {
            background: #eff6ff;
            color: var(--brand-700);
        }

        .criteria-icon.orange {
            background: #fff7ed;
            color: var(--accent-500);
        }

        .criteria-icon.green {
            background: #ecfdf5;
            color: #10b981;
        }

        .criteria-icon.purple {
            background: #f5f3ff;
            color: #7c3aed;
        }

        .criteria-title {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--gray-900);
            margin: 0 0 0.3rem;
        }

        .criteria-desc {
            font-size: 0.78rem;
            color: var(--gray-500);
            line-height: 1.45;
            margin: 0;
        }

        /* ===== Process / Steps ===== */
        .steps-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1rem;
        }

        @media (min-width: 640px) {
            .steps-list {
                grid-template-columns: repeat(2, 1fr);
                gap: 1.25rem;
            }
        }

        @media (min-width: 1024px) {
            .steps-list {
                grid-template-columns: repeat(4, 1fr);
            }
        }

        .step-item {
            background: #fff;
            border-radius: var(--radius-xl);
            padding: 1.25rem;
            box-shadow: var(--shadow-card);
            position: relative;
            transition: all var(--transition-normal);
            border: 1px solid transparent;
        }

        .step-item:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: #e5e7eb;
        }

        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            font-weight: 700;
            font-size: 0.9rem;
            color: #fff;
            background: linear-gradient(135deg, var(--brand-700), var(--brand-800));
            margin-bottom: 0.75rem;
        }

        .step-title {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--gray-900);
            margin: 0 0 0.3rem;
        }

        .step-desc {
            font-size: 0.82rem;
            color: var(--gray-500);
            line-height: 1.5;
            margin: 0;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
        }

        .faq-item {
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            border: 1px solid #f1f5f9;
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            border-color: #e2e8f0;
        }

        .faq-question {
            width: 100%;
            text-align: left;
            padding: 1rem 1.15rem;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--gray-800);
            background: none;
            border: none;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 0.75rem;
            line-height: 1.4;
        }

        .faq-question i {
            font-size: 0.8rem;
            color: var(--gray-400);
            transition: transform var(--transition-fast);
            flex-shrink: 0;
        }

        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--brand-700);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 1.15rem;
            font-size: 0.88rem;
            color: var(--gray-600);
            line-height: 1.6;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 1.15rem 1rem;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: linear-gradient(160deg, #1e3a5f 0%, #152c4a 100%);
            padding: 2.5rem 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        @media (min-width: 768px) {
            .cta-section {
                padding: 3.5rem 0;
            }
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
            pointer-events: none;
        }

        .cta-content {
            position: relative;
            z-index: 2;
        }

        .cta-title {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 0.6rem;
        }

        @media (min-width: 768px) {
            .cta-title {
                font-size: 1.85rem;
            }
        }

        .cta-desc {
            font-size: 0.95rem;
            color: #cbd5e1;
            margin: 0 0 1.5rem;
            max-width: 480px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.55;
        }

        .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.7rem 1.8rem;
            border-radius: var(--radius-lg);
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-500), #e65c00);
            box-shadow: 0 4px 16px rgba(249,115,22,0.4);
            transition: all var(--transition-normal);
            border: none;
            cursor: pointer;
        }

        .btn-cta:hover {
            box-shadow: 0 6px 24px rgba(249,115,22,0.5);
            transform: translateY(-2px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #fff;
            border-top: 1px solid var(--gray-200);
            padding: 2rem 0 1.25rem;
        }

        @media (min-width: 768px) {
            .site-footer {
                padding: 2.5rem 0 1.5rem;
            }
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
            margin-bottom: 1.5rem;
        }

        @media (min-width: 640px) {
            .footer-grid {
                grid-template-columns: 1.5fr 1fr 1fr 1fr;
                gap: 2rem;
            }
        }

        .footer-brand p {
            font-size: 0.85rem;
            color: var(--gray-500);
            line-height: 1.55;
            margin: 0.5rem 0 0;
        }

        .logo-text-footer {
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--brand-800);
        }

        .footer-col h4 {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--gray-800);
            margin: 0 0 0.6rem;
            text-transform: uppercase;
            letter-spacing: 0.03em;
        }

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

        .footer-col li {
            margin-bottom: 0.4rem;
        }

        .footer-col a {
            font-size: 0.85rem;
            color: var(--gray-500);
            transition: color var(--transition-fast);
        }

        .footer-col a:hover {
            color: var(--brand-700);
        }

        .footer-bottom {
            text-align: center;
            font-size: 0.8rem;
            color: var(--gray-400);
            padding-top: 1rem;
            border-top: 1px solid var(--gray-100);
        }

        /* ===== Mobile body padding ===== */
        @media (max-width: 1023px) {
            body {
                padding-bottom: 72px;
            }
        }

        /* ===== Utility ===== */
        .text-accent {
            color: var(--accent-500);
        }

        .bg-soft-gray {
            background-color: #f8fafc;
        }

        .bg-white-section {
            background-color: #fff;
        }

        @media (max-width: 639px) {
            .hide-mobile {
                display: none !important;
            }
        }

        /* Focus visible */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--brand-600);
            outline-offset: 2px;
            border-radius: 4px;
        }