/* roulang page: index */
:root {
            --sidebar-width: 260px;
            --color-gold: #eab308;
            --color-gold-light: #facc15;
            --color-surface-dark: #0f1117;
            --color-surface-mid: #181a23;
            --color-surface-card: #1f2230;
            --color-surface-hover: #282d3d;
            --color-border: #2a3040;
            --color-text-primary: #f1f5f9;
            --color-text-secondary: #94a3b8;
            --color-text-muted: #64748b;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.4), 0 4px 16px rgba(0, 0, 0, 0.25);
            --shadow-lg: 0 4px 24px rgba(0, 0, 0, 0.5), 0 8px 40px rgba(0, 0, 0, 0.3);
            --shadow-gold: 0 0 24px rgba(234, 179, 8, 0.15), 0 0 60px rgba(234, 179, 8, 0.06);
            --transition-fast: 0.18s ease;
            --transition-normal: 0.28s 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: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            background-color: var(--color-surface-dark);
            color: var(--color-text-primary);
            line-height: 1.7;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

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

        /* ========== 左侧App Shell导航 ========== */
        .app-sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: linear-gradient(180deg, #12151e 0%, #0d0f16 100%);
            border-right: 1px solid var(--color-border);
            z-index: 1000;
            display: flex;
            flex-direction: column;
            transition: transform var(--transition-normal);
            overflow-y: auto;
            overflow-x: hidden;
        }

        .app-sidebar::-webkit-scrollbar {
            width: 4px;
        }

        .app-sidebar::-webkit-scrollbar-track {
            background: transparent;
        }

        .app-sidebar::-webkit-scrollbar-thumb {
            background: var(--color-border);
            border-radius: 4px;
        }

        .sidebar-logo {
            padding: 24px 20px 20px;
            border-bottom: 1px solid var(--color-border);
            flex-shrink: 0;
        }

        .sidebar-logo a {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.2rem;
            font-weight: 700;
            letter-spacing: 0.01em;
            color: #ffffff;
            white-space: nowrap;
        }

        .sidebar-logo .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, #eab308 0%, #ca8a04 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            font-weight: 800;
            color: #0f1117;
            flex-shrink: 0;
            box-shadow: var(--shadow-gold);
        }

        .sidebar-nav {
            flex: 1;
            padding: 16px 12px;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 11px 14px;
            border-radius: var(--radius-md);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            position: relative;
        }

        .sidebar-nav a:hover {
            background-color: var(--color-surface-hover);
            color: #e2e8f0;
        }

        .sidebar-nav a.active {
            background: linear-gradient(135deg, rgba(234, 179, 8, 0.15) 0%, rgba(202, 138, 4, 0.08) 100%);
            color: var(--color-gold);
            font-weight: 600;
            box-shadow: inset 3px 0 0 var(--color-gold);
        }

        .sidebar-nav a .nav-icon {
            width: 20px;
            height: 20px;
            flex-shrink: 0;
            opacity: 0.7;
            transition: opacity var(--transition-fast);
        }

        .sidebar-nav a.active .nav-icon,
        .sidebar-nav a:hover .nav-icon {
            opacity: 1;
        }

        .sidebar-footer {
            padding: 16px 20px;
            border-top: 1px solid var(--color-border);
            flex-shrink: 0;
            font-size: 0.78rem;
            color: var(--color-text-muted);
        }

        /* ========== 主内容区域 ========== */
        .app-main {
            margin-left: var(--sidebar-width);
            min-height: 100vh;
            transition: margin-left var(--transition-normal);
        }

        /* ========== 移动端顶部导航 ========== */
        .mobile-topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 56px;
            background: linear-gradient(180deg, #12151e 0%, #0d0f16 100%);
            border-bottom: 1px solid var(--color-border);
            z-index: 999;
            align-items: center;
            padding: 0 16px;
            gap: 12px;
        }

        .mobile-topbar .hamburger-btn {
            width: 36px;
            height: 36px;
            border: none;
            background: transparent;
            color: #e2e8f0;
            font-size: 1.4rem;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
            flex-shrink: 0;
        }

        .mobile-topbar .hamburger-btn:hover {
            background: var(--color-surface-hover);
        }

        .mobile-topbar .mobile-logo {
            font-weight: 700;
            font-size: 1.05rem;
            color: #ffffff;
            white-space: nowrap;
        }

        /* 移动端遮罩 */
        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.7);
            z-index: 998;
            transition: opacity var(--transition-normal);
        }

        .sidebar-overlay.active {
            display: block;
        }

        /* ========== Hero区域 ========== */
        .hero-section {
            position: relative;
            min-height: 580px;
            display: flex;
            align-items: center;
            overflow: hidden;
            background-color: #0a0c13;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 12, 19, 0.88) 0%, rgba(15, 17, 23, 0.78) 40%, rgba(24, 26, 35, 0.7) 70%, rgba(10, 12, 19, 0.85) 100%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            padding: 80px 40px;
            max-width: 800px;
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            background: rgba(234, 179, 8, 0.12);
            color: var(--color-gold-light);
            border: 1px solid rgba(234, 179, 8, 0.25);
            margin-bottom: 20px;
        }

        .hero-title {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.25;
            color: #ffffff;
            margin: 0 0 18px;
            letter-spacing: -0.01em;
        }

        .hero-title .highlight {
            color: var(--color-gold);
        }

        .hero-desc {
            font-size: 1.12rem;
            color: var(--color-text-secondary);
            line-height: 1.75;
            margin: 0 0 32px;
            max-width: 600px;
        }

        .hero-buttons {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: var(--radius-md);
            font-size: 0.95rem;
            font-weight: 600;
            border: none;
            background: linear-gradient(135deg, #eab308 0%, #ca8a04 100%);
            color: #0f1117;
            transition: all var(--transition-fast);
            box-shadow: 0 2px 12px rgba(234, 179, 8, 0.25);
            cursor: pointer;
            text-decoration: none;
        }

        .btn-primary:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(234, 179, 8, 0.35);
            background: linear-gradient(135deg, #facc15 0%, #eab308 100%);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(234, 179, 8, 0.2);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: var(--radius-md);
            font-size: 0.95rem;
            font-weight: 600;
            background: transparent;
            color: #e2e8f0;
            border: 1.5px solid var(--color-border);
            transition: all var(--transition-fast);
            cursor: pointer;
            text-decoration: none;
        }

        .btn-outline:hover {
            border-color: var(--color-gold);
            color: var(--color-gold);
            background: rgba(234, 179, 8, 0.05);
        }

        /* ========== 板块通用样式 ========== */
        .section-block {
            padding: 72px 40px;
        }

        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--color-gold);
            margin-bottom: 10px;
        }

        .section-title {
            font-size: 1.9rem;
            font-weight: 700;
            color: #ffffff;
            margin: 0 0 14px;
            letter-spacing: -0.01em;
        }

        .section-desc {
            font-size: 1.02rem;
            color: var(--color-text-secondary);
            max-width: 620px;
            line-height: 1.7;
        }

        /* ========== 数据统计条 ========== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            padding: 48px 40px;
            background: var(--color-surface-mid);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }

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

        .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--color-gold);
            letter-spacing: -0.02em;
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            margin-top: 6px;
        }

        /* ========== 服务卡片网格 ========== */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
            margin-top: 40px;
        }

        .service-card {
            background: var(--color-surface-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-normal);
            cursor: pointer;
        }

        .service-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(234, 179, 8, 0.3);
        }

        .service-card .card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: var(--color-surface-hover);
        }

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

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

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

        .service-card .card-tag {
            display: inline-block;
            padding: 4px 10px;
            border-radius: 12px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(234, 179, 8, 0.1);
            color: var(--color-gold-light);
            margin-bottom: 10px;
        }

        .service-card .card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: #ffffff;
            margin: 0 0 8px;
        }

        .service-card .card-desc {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.6;
            margin: 0;
        }

        /* ========== 资讯列表 ========== */
        .news-list {
            margin-top: 36px;
            display: flex;
            flex-direction: column;
            gap: 0;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--color-surface-card);
        }

        .news-item {
            display: flex;
            align-items: center;
            gap: 18px;
            padding: 16px 22px;
            border-bottom: 1px solid var(--color-border);
            transition: background var(--transition-fast);
            text-decoration: none;
            color: inherit;
        }

        .news-item:last-child {
            border-bottom: none;
        }

        .news-item:hover {
            background: var(--color-surface-hover);
        }

        .news-item .news-date {
            font-size: 0.82rem;
            color: var(--color-text-muted);
            white-space: nowrap;
            flex-shrink: 0;
            min-width: 80px;
        }

        .news-item .news-title {
            font-size: 0.95rem;
            font-weight: 500;
            color: #e2e8f0;
            flex: 1;
            transition: color var(--transition-fast);
        }

        .news-item:hover .news-title {
            color: var(--color-gold-light);
        }

        .news-item .news-arrow {
            color: var(--color-text-muted);
            flex-shrink: 0;
            transition: transform var(--transition-fast);
        }

        .news-item:hover .news-arrow {
            transform: translateX(4px);
            color: var(--color-gold);
        }

        .news-empty {
            padding: 40px 22px;
            text-align: center;
            color: var(--color-text-muted);
            font-size: 0.95rem;
        }

        /* ========== 优势列表 ========== */
        .advantages-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .advantage-item {
            display: flex;
            gap: 16px;
            padding: 22px 24px;
            background: var(--color-surface-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            transition: all var(--transition-fast);
        }

        .advantage-item:hover {
            border-color: rgba(234, 179, 8, 0.25);
            box-shadow: var(--shadow-card);
        }

        .advantage-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-md);
            background: rgba(234, 179, 8, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            flex-shrink: 0;
            color: var(--color-gold);
        }

        .advantage-text h4 {
            font-size: 1.02rem;
            font-weight: 700;
            color: #ffffff;
            margin: 0 0 5px;
        }

        .advantage-text p {
            font-size: 0.88rem;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.6;
        }

        /* ========== 流程/步骤 ========== */
        .steps-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .step-card {
            text-align: center;
            padding: 28px 18px;
            background: var(--color-surface-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            position: relative;
            transition: all var(--transition-fast);
        }

        .step-card:hover {
            border-color: rgba(234, 179, 8, 0.3);
            box-shadow: var(--shadow-card);
        }

        .step-num {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, #eab308 0%, #ca8a04 100%);
            color: #0f1117;
            font-weight: 800;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            box-shadow: 0 0 16px rgba(234, 179, 8, 0.2);
        }

        .step-card h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #ffffff;
            margin: 0 0 6px;
        }

        .step-card p {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.6;
        }

        /* ========== FAQ ========== */
        .faq-list {
            margin-top: 36px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 780px;
        }

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

        .faq-item:hover {
            border-color: rgba(234, 179, 8, 0.2);
        }

        .faq-question {
            width: 100%;
            padding: 18px 22px;
            background: transparent;
            border: none;
            color: #e2e8f0;
            font-size: 0.98rem;
            font-weight: 600;
            text-align: left;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            transition: color var(--transition-fast);
        }

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

        .faq-question .faq-icon {
            font-size: 1.2rem;
            transition: transform var(--transition-fast);
            flex-shrink: 0;
            color: var(--color-text-muted);
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 200px;
        }

        .faq-answer-inner {
            padding: 0 22px 18px;
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* ========== CTA区块 ========== */
        .cta-block {
            background: linear-gradient(135deg, #181a23 0%, #1a1d2a 100%);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-xl);
            padding: 56px 48px;
            text-align: center;
            margin: 0 40px 72px;
            position: relative;
            overflow: hidden;
        }

        .cta-block::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle at center, rgba(234, 179, 8, 0.04) 0%, transparent 60%);
            pointer-events: none;
        }

        .cta-block .cta-title {
            font-size: 1.7rem;
            font-weight: 700;
            color: #ffffff;
            margin: 0 0 12px;
            position: relative;
            z-index: 1;
        }

        .cta-block .cta-desc {
            font-size: 1rem;
            color: var(--color-text-secondary);
            margin: 0 0 28px;
            position: relative;
            z-index: 1;
        }

        .cta-block .btn-primary {
            position: relative;
            z-index: 1;
            font-size: 1rem;
            padding: 14px 34px;
        }

        /* ========== Footer ========== */
        .app-footer {
            border-top: 1px solid var(--color-border);
            padding: 40px;
            background: var(--color-surface-mid);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 20px;
            font-size: 0.88rem;
            color: var(--color-text-muted);
        }

        .app-footer .footer-brand {
            font-weight: 700;
            color: #e2e8f0;
            font-size: 1rem;
        }

        .app-footer .footer-links {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
        }

        .app-footer .footer-links a {
            color: var(--color-text-muted);
            transition: color var(--transition-fast);
        }

        .app-footer .footer-links a:hover {
            color: var(--color-gold-light);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .app-sidebar {
                transform: translateX(-100%);
            }

            .app-sidebar.open {
                transform: translateX(0);
            }

            .app-main {
                margin-left: 0;
            }

            .mobile-topbar {
                display: flex;
            }

            .hero-section {
                min-height: 480px;
            }

            .hero-content {
                padding: 100px 24px 60px;
            }

            .hero-title {
                font-size: 2rem;
            }

            .hero-desc {
                font-size: 1rem;
            }

            .section-block {
                padding: 48px 24px;
            }

            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                padding: 32px 24px;
                gap: 12px;
            }

            .cards-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

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

            .steps-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }

            .cta-block {
                margin: 0 24px 48px;
                padding: 40px 28px;
            }

            .cta-block .cta-title {
                font-size: 1.4rem;
            }

            .app-footer {
                padding: 28px 24px;
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 640px) {
            .hero-section {
                min-height: 420px;
            }

            .hero-content {
                padding: 90px 16px 44px;
            }

            .hero-title {
                font-size: 1.6rem;
            }

            .hero-desc {
                font-size: 0.92rem;
            }

            .hero-buttons {
                flex-direction: column;
                gap: 10px;
            }

            .hero-buttons .btn-primary,
            .hero-buttons .btn-outline {
                justify-content: center;
                width: 100%;
            }

            .section-block {
                padding: 40px 16px;
            }

            .section-title {
                font-size: 1.5rem;
            }

            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                padding: 24px 16px;
                gap: 8px;
            }

            .stat-number {
                font-size: 1.8rem;
            }

            .stat-label {
                font-size: 0.78rem;
            }

            .cards-grid {
                grid-template-columns: 1fr;
                gap: 14px;
                margin-top: 28px;
            }

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

            .news-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
                padding: 14px 16px;
            }

            .news-item .news-date {
                min-width: auto;
            }

            .cta-block {
                margin: 0 16px 40px;
                padding: 32px 20px;
            }

            .cta-block .cta-title {
                font-size: 1.2rem;
            }

            .advantage-item {
                flex-direction: column;
                gap: 10px;
                padding: 18px;
            }

            .app-footer {
                padding: 22px 16px;
                gap: 14px;
            }

            .app-footer .footer-links {
                gap: 16px;
                justify-content: center;
            }
        }

/* roulang page: category1 */
:root {
            --color-bg: #0d1117;
            --color-bg-secondary: #111820;
            --color-surface: #161c26;
            --color-surface-hover: #1c2432;
            --color-surface-elevated: #1e2633;
            --color-border: #2a3344;
            --color-border-light: #353f52;
            --color-accent: #c9a040;
            --color-accent-light: #dbb958;
            --color-accent-glow: rgba(201, 160, 64, 0.25);
            --color-accent-strong: #e8c865;
            --color-text: #e6edf3;
            --color-text-secondary: #b0b8c4;
            --color-text-muted: #7a8494;
            --color-text-inverse: #0d1117;
            --color-success: #3fb950;
            --color-warning: #d29922;
            --color-danger: #f85149;
            --color-info: #58a6ff;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.5);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.6);
            --shadow-glow: 0 0 24px var(--color-accent-glow);
            --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.45);
            --sidebar-width: 250px;
            --sidebar-collapsed-width: 0px;
            --topbar-height: 56px;
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

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

        body {
            font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            min-height: 100vh;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
        }
        input,
        textarea {
            font-family: inherit;
            outline: none;
        }
        ul {
            list-style: none;
        }

        /* Sidebar */
        .app-sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--color-bg-secondary);
            border-right: 1px solid var(--color-border);
            z-index: 1000;
            display: flex;
            flex-direction: column;
            padding: 28px 0 20px;
            transition: transform var(--transition-slow);
            overflow-y: auto;
            box-shadow: var(--shadow-lg);
        }

        .sidebar-logo {
            padding: 0 22px 24px;
            border-bottom: 1px solid var(--color-border);
            margin-bottom: 16px;
        }
        .sidebar-logo a {
            font-size: 1.15rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            color: var(--color-accent);
            display: flex;
            align-items: center;
            gap: 10px;
            transition: color var(--transition-fast);
        }
        .sidebar-logo a:hover {
            color: var(--color-accent-light);
        }
        .sidebar-logo .logo-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--color-accent);
            box-shadow: 0 0 12px var(--color-accent-glow);
            flex-shrink: 0;
            animation: logoPulse 2.4s ease-in-out infinite;
        }
        @keyframes logoPulse {
            0%,
            100% {
                box-shadow: 0 0 12px var(--color-accent-glow);
            }
            50% {
                box-shadow: 0 0 22px rgba(201, 160, 64, 0.55);
            }
        }

        .sidebar-nav {
            flex: 1;
            display: flex;
            flex-direction: column;
            padding: 0 14px;
            gap: 4px;
        }
        .sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: var(--radius-md);
            color: var(--color-text-secondary);
            font-size: 0.95rem;
            font-weight: 500;
            transition: all var(--transition-fast);
            position: relative;
        }
        .sidebar-nav a:hover {
            background: var(--color-surface);
            color: var(--color-text);
        }
        .sidebar-nav a.active {
            background: var(--color-surface-elevated);
            color: var(--color-accent);
            font-weight: 600;
            box-shadow: inset 3px 0 0 var(--color-accent);
        }
        .sidebar-nav a .nav-icon {
            width: 20px;
            height: 20px;
            flex-shrink: 0;
            opacity: 0.75;
        }
        .sidebar-nav a.active .nav-icon {
            opacity: 1;
            color: var(--color-accent);
        }

        .sidebar-footer-tag {
            padding: 16px 22px 0;
            margin-top: auto;
            font-size: 0.72rem;
            color: var(--color-text-muted);
            text-align: center;
            border-top: 1px solid var(--color-border);
            margin-left: 14px;
            margin-right: 14px;
        }

        /* Main content */
        .app-main {
            margin-left: var(--sidebar-width);
            min-height: 100vh;
            transition: margin-left var(--transition-slow);
        }

        /* Topbar (mobile) */
        .mobile-topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--topbar-height);
            background: var(--color-bg-secondary);
            border-bottom: 1px solid var(--color-border);
            z-index: 999;
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
        }
        .mobile-topbar .topbar-logo {
            font-weight: 700;
            color: var(--color-accent);
            font-size: 1rem;
            letter-spacing: 0.02em;
        }
        .mobile-topbar .menu-toggle {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            color: var(--color-text);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            transition: all var(--transition-fast);
        }
        .mobile-topbar .menu-toggle:hover {
            background: var(--color-surface-hover);
            border-color: var(--color-accent);
        }

        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 998;
            opacity: 0;
            transition: opacity var(--transition-base);
            pointer-events: none;
        }
        .sidebar-overlay.active {
            opacity: 1;
            pointer-events: auto;
        }

        /* Hero */
        .hero-category {
            position: relative;
            padding: 100px 40px 90px;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            min-height: 440px;
        }
        .hero-category::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(13, 17, 23, 0.78) 0%, rgba(13, 17, 23, 0.88) 60%, rgba(13, 17, 23, 0.96) 100%);
            z-index: 1;
        }
        .hero-category .hero-inner {
            position: relative;
            z-index: 2;
            max-width: 720px;
            margin: 0 auto;
        }
        .hero-category .hero-badge {
            display: inline-block;
            padding: 6px 18px;
            border-radius: 50px;
            background: var(--color-accent-glow);
            border: 1px solid rgba(201, 160, 64, 0.4);
            color: var(--color-accent-light);
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            margin-bottom: 20px;
        }
        .hero-category h1 {
            font-size: 2.8rem;
            font-weight: 800;
            letter-spacing: 0.02em;
            color: #ffffff;
            margin-bottom: 16px;
            line-height: 1.25;
        }
        .hero-category .hero-sub {
            font-size: 1.12rem;
            color: var(--color-text-secondary);
            max-width: 540px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .hero-category .hero-cta-group {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
            transition: all var(--transition-base);
            cursor: pointer;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--color-accent);
            color: var(--color-text-inverse);
            box-shadow: 0 4px 16px var(--color-accent-glow);
        }
        .btn-primary:hover {
            background: var(--color-accent-light);
            box-shadow: 0 6px 24px rgba(201, 160, 64, 0.45);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px var(--color-accent-glow);
        }
        .btn-outline {
            background: transparent;
            color: var(--color-text);
            border: 2px solid var(--color-border-light);
        }
        .btn-outline:hover {
            border-color: var(--color-accent);
            color: var(--color-accent-light);
            background: rgba(201, 160, 64, 0.06);
        }
        .btn-sm {
            padding: 9px 18px;
            font-size: 0.85rem;
            border-radius: 50px;
        }

        /* Section */
        .section-block {
            padding: 70px 32px;
        }
        .section-container {
            max-width: 1100px;
            margin: 0 auto;
        }
        .section-label {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--color-accent);
            text-transform: uppercase;
            margin-bottom: 10px;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
            line-height: 1.3;
        }
        .section-desc {
            font-size: 1rem;
            color: var(--color-text-secondary);
            max-width: 600px;
            line-height: 1.7;
            margin-bottom: 40px;
        }
        .section-title.centered,
        .section-desc.centered {
            text-align: center;
            margin-left: auto;
            margin-right: auto;
        }

        /* Cards */
        .card-service {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            gap: 14px;
            position: relative;
            overflow: hidden;
        }
        .card-service:hover {
            border-color: var(--color-accent);
            box-shadow: var(--shadow-glow);
            transform: translateY(-4px);
            background: var(--color-surface-hover);
        }
        .card-service .card-icon-wrap {
            width: 50px;
            height: 50px;
            border-radius: var(--radius-md);
            background: var(--color-accent-glow);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--color-accent-light);
            flex-shrink: 0;
        }
        .card-service h3 {
            font-size: 1.18rem;
            font-weight: 700;
            color: #ffffff;
        }
        .card-service p {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.65;
        }
        .card-service .card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-top: auto;
        }
        .card-service .card-tags span {
            font-size: 0.72rem;
            padding: 5px 12px;
            border-radius: 50px;
            background: rgba(201, 160, 64, 0.1);
            color: var(--color-accent-light);
            border: 1px solid rgba(201, 160, 64, 0.25);
            font-weight: 500;
        }
        .card-service .card-img {
            width: 100%;
            border-radius: var(--radius-md);
            aspect-ratio: 16 / 10;
            object-fit: cover;
            border: 1px solid var(--color-border);
        }

        /* Timeline */
        .timeline-steps {
            display: flex;
            flex-direction: column;
            gap: 0;
            position: relative;
            padding-left: 32px;
        }
        .timeline-steps::before {
            content: '';
            position: absolute;
            left: 15px;
            top: 8px;
            bottom: 8px;
            width: 2px;
            background: var(--color-border-light);
            border-radius: 1px;
        }
        .timeline-step {
            position: relative;
            padding: 20px 0 20px 28px;
        }
        .timeline-step::before {
            content: '';
            position: absolute;
            left: -21px;
            top: 24px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--color-accent);
            border: 3px solid var(--color-bg);
            box-shadow: 0 0 10px var(--color-accent-glow);
            z-index: 2;
        }
        .timeline-step h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 4px;
        }
        .timeline-step p {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }

        /* Stats grid */
        .stat-item {
            text-align: center;
            padding: 24px 16px;
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border);
            transition: all var(--transition-base);
        }
        .stat-item:hover {
            border-color: var(--color-accent);
            box-shadow: var(--shadow-md);
        }
        .stat-item .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--color-accent);
            letter-spacing: 0.01em;
            line-height: 1.1;
        }
        .stat-item .stat-label {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            margin-top: 6px;
        }

        /* FAQ */
        .faq-item {
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            margin-bottom: 10px;
            background: var(--color-surface);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--color-border-light);
        }
        .faq-question {
            width: 100%;
            padding: 18px 20px;
            text-align: left;
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-text);
            background: transparent;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            cursor: pointer;
            transition: all var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--color-accent-light);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            transition: transform var(--transition-base);
            font-size: 0.85rem;
            color: var(--color-accent);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-base);
            padding: 0 20px;
            color: var(--color-text-secondary);
            font-size: 0.92rem;
            line-height: 1.7;
            background: rgba(0, 0, 0, 0.15);
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 14px 20px 18px;
        }
        .faq-item.open .faq-icon {
            transform: rotate(180deg);
        }
        .faq-item.open {
            border-color: var(--color-accent);
            box-shadow: 0 0 12px rgba(201, 160, 64, 0.1);
        }

        /* CTA */
        .cta-block {
            background: linear-gradient(135deg, var(--color-surface-elevated) 0%, var(--color-bg-secondary) 100%);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-xl);
            padding: 50px 36px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-block::after {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: var(--color-accent-glow);
            filter: blur(60px);
            opacity: 0.5;
            pointer-events: none;
        }
        .cta-block h2 {
            font-size: 1.7rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 10px;
            position: relative;
            z-index: 1;
        }
        .cta-block p {
            color: var(--color-text-secondary);
            margin-bottom: 24px;
            position: relative;
            z-index: 1;
            font-size: 1rem;
        }

        /* Footer */
        .app-footer {
            background: var(--color-bg-secondary);
            border-top: 1px solid var(--color-border);
            padding: 32px 20px 24px;
            text-align: center;
        }
        .footer-brand {
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--color-accent);
            margin-bottom: 12px;
            letter-spacing: 0.03em;
        }
        .footer-links {
            display: flex;
            gap: 20px;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 10px;
        }
        .footer-links a {
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            transition: color var(--transition-fast);
        }
        .footer-links a:hover {
            color: var(--color-accent-light);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .app-sidebar {
                transform: translateX(-100%);
                width: 260px;
            }
            .app-sidebar.mobile-open {
                transform: translateX(0);
            }
            .sidebar-overlay {
                display: block;
            }
            .mobile-topbar {
                display: flex;
            }
            .app-main {
                margin-left: 0;
                padding-top: var(--topbar-height);
            }
            .hero-category {
                padding: 60px 20px 50px;
                min-height: 340px;
            }
            .hero-category h1 {
                font-size: 2rem;
            }
            .hero-category .hero-sub {
                font-size: 0.95rem;
            }
            .section-block {
                padding: 44px 18px;
            }
            .section-title {
                font-size: 1.55rem;
            }
            .timeline-steps {
                padding-left: 20px;
            }
            .timeline-step {
                padding-left: 18px;
            }
            .timeline-step::before {
                left: -16px;
                width: 12px;
                height: 12px;
            }
            .timeline-steps::before {
                left: 10px;
            }
        }
        @media (max-width: 640px) {
            .hero-category {
                padding: 44px 16px 36px;
                min-height: 280px;
            }
            .hero-category h1 {
                font-size: 1.55rem;
            }
            .hero-category .hero-sub {
                font-size: 0.88rem;
            }
            .hero-category .hero-cta-group {
                flex-direction: column;
                align-items: center;
            }
            .btn {
                width: 100%;
                justify-content: center;
                padding: 11px 20px;
                font-size: 0.9rem;
            }
            .section-block {
                padding: 34px 12px;
            }
            .section-title {
                font-size: 1.35rem;
            }
            .stat-item .stat-number {
                font-size: 1.8rem;
            }
            .cta-block {
                padding: 32px 16px;
            }
            .cta-block h2 {
                font-size: 1.35rem;
            }
            .card-service {
                padding: 20px 16px;
            }
        }

/* roulang page: article */
:root {
            --color-brand: #d4a853;
            --color-brand-light: #e0c478;
            --color-brand-dark: #b8923a;
            --color-surface: #1a1d25;
            --color-surface-light: #22252f;
            --color-surface-dark: #0f1117;
            --color-surface-deeper: #0a0c10;
            --color-surface-card: #1e2130;
            --color-text-primary: #e8e6e0;
            --color-text-secondary: #b0ada5;
            --color-text-muted: #7a7670;
            --color-border: rgba(255,255,255,0.08);
            --color-border-light: rgba(255,255,255,0.14);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-card: 0 4px 24px rgba(0,0,0,0.35);
            --shadow-elevated: 0 8px 40px rgba(0,0,0,0.5);
            --shadow-brand: 0 4px 20px rgba(212,168,83,0.2);
            --sidebar-width: 256px;
            --transition-fast: 0.18s ease;
            --transition-smooth: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
        }
        *,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
        html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
        body{font-family:'PingFang SC','Noto Sans SC','Microsoft YaHei',sans-serif;background:var(--color-surface-dark);color:var(--color-text-primary);line-height:1.7;min-height:100vh;overflow-x:hidden}
        a{text-decoration:none;color:inherit;transition:color var(--transition-fast)}
        img{max-width:100%;height:auto;display:block}
        button,input{font-family:inherit;border:none;outline:none;cursor:pointer}
        ::selection{background:rgba(212,168,83,0.3);color:#fff}
        ::-webkit-scrollbar{width:6px}
        ::-webkit-scrollbar-track{background:var(--color-surface-deeper)}
        ::-webkit-scrollbar-thumb{background:rgba(255,255,255,0.15);border-radius:3px}
        ::-webkit-scrollbar-thumb:hover{background:rgba(255,255,255,0.25)}

        /* Sidebar */
        .app-sidebar{position:fixed;top:0;left:0;width:var(--sidebar-width);height:100vh;background:var(--color-surface-deeper);z-index:100;display:flex;flex-direction:column;border-right:1px solid var(--color-border);transition:transform var(--transition-smooth);overflow-y:auto}
        .sidebar-logo{padding:28px 24px 20px;border-bottom:1px solid var(--color-border);flex-shrink:0}
        .sidebar-logo a{font-size:1.25rem;font-weight:700;letter-spacing:0.02em;color:var(--color-brand);display:flex;align-items:center;gap:10px;transition:color var(--transition-fast)}
        .sidebar-logo a:hover{color:var(--color-brand-light)}
        .sidebar-logo .logo-icon{width:36px;height:36px;background:linear-gradient(135deg,var(--color-brand),var(--color-brand-dark));border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:1.1rem;color:#1a1a1a;font-weight:900;flex-shrink:0}
        .sidebar-nav{flex:1;padding:12px 14px;display:flex;flex-direction:column;gap:4px}
        .sidebar-nav a{display:flex;align-items:center;gap:12px;padding:12px 16px;border-radius:var(--radius-md);font-size:0.95rem;font-weight:500;color:var(--color-text-secondary);transition:all var(--transition-fast);position:relative}
        .sidebar-nav a:hover{background:rgba(255,255,255,0.04);color:var(--color-text-primary)}
        .sidebar-nav a.active{background:rgba(212,168,83,0.1);color:var(--color-brand);font-weight:600}
        .sidebar-nav a.active::before{content:'';position:absolute;left:0;top:50%;transform:translateY(-50%);width:3px;height:24px;background:var(--color-brand);border-radius:0 3px 3px 0}
        .nav-icon{width:20px;height:20px;flex-shrink:0}
        .sidebar-footer{padding:16px 20px;border-top:1px solid var(--color-border);flex-shrink:0}
        .sidebar-footer .footer-info{font-size:0.75rem;color:var(--color-text-muted);text-align:center}

        /* Mobile header */
        .mobile-header{position:fixed;top:0;left:0;right:0;height:56px;background:var(--color-surface-deeper);z-index:99;display:flex;align-items:center;justify-content:space-between;padding:0 16px;border-bottom:1px solid var(--color-border);display:none}
        .mobile-header .mobile-logo{font-size:1.05rem;font-weight:700;color:var(--color-brand)}
        .hamburger-btn{width:40px;height:40px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;background:transparent;border-radius:var(--radius-sm);transition:background var(--transition-fast)}
        .hamburger-btn:hover{background:rgba(255,255,255,0.05)}
        .hamburger-btn span{display:block;width:22px;height:2px;background:var(--color-text-primary);border-radius:2px;transition:all var(--transition-smooth);transform-origin:center}
        .hamburger-btn.open span:nth-child(1){transform:translateY(8px) rotate(45deg)}
        .hamburger-btn.open span:nth-child(2){opacity:0;transform:scaleX(0)}
        .hamburger-btn.open span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}

        /* Overlay */
        .sidebar-overlay{position:fixed;inset:0;background:rgba(0,0,0,0.6);z-index:98;opacity:0;pointer-events:none;transition:opacity var(--transition-smooth)}
        .sidebar-overlay.show{opacity:1;pointer-events:auto}

        /* Main content */
        .main-content{margin-left:var(--sidebar-width);min-height:100vh;display:flex;flex-direction:column}

        /* Article header banner */
        .article-banner{position:relative;padding:60px 40px 50px;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;overflow:hidden}
        .article-banner::before{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,12,16,0.65) 0%,rgba(10,12,16,0.9) 100%)}
        .article-banner::after{content:'';position:absolute;bottom:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--color-brand-dark),transparent)}
        .article-banner-inner{position:relative;z-index:1;max-width:860px;margin:0 auto;text-align:center}
        .article-category-tag{display:inline-flex;align-items:center;gap:6px;padding:6px 16px;background:rgba(212,168,83,0.15);border:1px solid rgba(212,168,83,0.35);border-radius:20px;font-size:0.82rem;color:var(--color-brand);font-weight:500;margin-bottom:20px;transition:all var(--transition-fast)}
        .article-category-tag:hover{background:rgba(212,168,83,0.25);border-color:var(--color-brand)}
        .article-banner h1{font-size:2.2rem;font-weight:800;color:#fff;line-height:1.35;letter-spacing:0.01em;margin-bottom:16px;text-shadow:0 2px 12px rgba(0,0,0,0.5)}
        .article-meta{display:flex;align-items:center;justify-content:center;gap:20px;flex-wrap:wrap;font-size:0.88rem;color:var(--color-text-secondary)}
        .article-meta span{display:flex;align-items:center;gap:6px}
        .article-meta .meta-dot{width:4px;height:4px;border-radius:50%;background:var(--color-text-muted)}

        /* Article body */
        .article-body-section{padding:40px 40px 20px;flex:1}
        .article-body-card{max-width:860px;margin:0 auto;background:var(--color-surface-card);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:48px 44px;box-shadow:var(--shadow-card)}
        .article-content{font-size:1.02rem;line-height:1.85;color:var(--color-text-secondary)}
        .article-content h2{font-size:1.55rem;font-weight:700;color:#fff;margin:36px 0 14px;padding-bottom:10px;border-bottom:2px solid rgba(212,168,83,0.2);letter-spacing:0.01em}
        .article-content h3{font-size:1.25rem;font-weight:600;color:var(--color-text-primary);margin:28px 0 10px}
        .article-content h4{font-size:1.08rem;font-weight:600;color:var(--color-text-primary);margin:22px 0 8px}
        .article-content p{margin-bottom:16px}
        .article-content a{color:var(--color-brand);text-decoration:underline;text-underline-offset:3px;transition:color var(--transition-fast)}
        .article-content a:hover{color:var(--color-brand-light)}
        .article-content strong{color:var(--color-text-primary);font-weight:600}
        .article-content ul,.article-content ol{margin:12px 0 20px;padding-left:24px}
        .article-content li{margin-bottom:8px}
        .article-content ul li::marker{color:var(--color-brand)}
        .article-content ol li::marker{color:var(--color-brand);font-weight:600}
        .article-content blockquote{margin:24px 0;padding:18px 24px;border-left:4px solid var(--color-brand);background:rgba(212,168,83,0.05);border-radius:0 var(--radius-md) var(--radius-md) 0;font-style:italic;color:var(--color-text-primary)}
        .article-content img{border-radius:var(--radius-md);margin:20px 0;box-shadow:var(--shadow-card)}
        .article-content code{background:rgba(255,255,255,0.06);padding:3px 8px;border-radius:4px;font-size:0.9em;color:var(--color-brand-light)}
        .article-content pre{background:var(--color-surface-deeper);padding:20px 24px;border-radius:var(--radius-md);overflow-x:auto;margin:20px 0;border:1px solid var(--color-border)}
        .article-content pre code{background:none;padding:0;color:var(--color-text-secondary)}
        .article-content hr{margin:32px 0;border:none;height:1px;background:var(--color-border)}
        .article-content table{width:100%;border-collapse:collapse;margin:20px 0}
        .article-content th,.article-content td{padding:10px 14px;border:1px solid var(--color-border);text-align:left}
        .article-content th{background:rgba(255,255,255,0.03);font-weight:600;color:var(--color-text-primary)}

        /* Not found */
        .not-found-section{padding:80px 40px;text-align:center;flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center}
        .not-found-icon{width:100px;height:100px;background:rgba(212,168,83,0.08);border-radius:50%;display:flex;align-items:center;justify-content:center;margin-bottom:28px;font-size:2.8rem;color:var(--color-brand)}
        .not-found-section h1{font-size:2rem;font-weight:700;color:#fff;margin-bottom:12px}
        .not-found-section p{color:var(--color-text-secondary);font-size:1.05rem;margin-bottom:28px;max-width:480px}
        .not-found-illustration{max-width:320px;margin-bottom:24px;border-radius:var(--radius-lg);box-shadow:var(--shadow-card)}

        /* CTA section */
        .article-cta-section{padding:30px 40px 50px}
        .article-cta-card{max-width:860px;margin:0 auto;background:linear-gradient(135deg,rgba(212,168,83,0.08),rgba(212,168,83,0.03));border:1px solid rgba(212,168,83,0.2);border-radius:var(--radius-lg);padding:36px 40px;text-align:center;box-shadow:var(--shadow-brand)}
        .article-cta-card h3{font-size:1.3rem;font-weight:700;color:#fff;margin-bottom:10px}
        .article-cta-card p{color:var(--color-text-secondary);margin-bottom:20px;font-size:0.95rem}
        .btn-brand{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;background:linear-gradient(135deg,var(--color-brand),var(--color-brand-dark));color:#1a1a1a;font-weight:700;border-radius:var(--radius-md);font-size:0.95rem;transition:all var(--transition-fast);box-shadow:0 4px 16px rgba(212,168,83,0.3);letter-spacing:0.01em}
        .btn-brand:hover{transform:translateY(-2px);box-shadow:0 8px 28px rgba(212,168,83,0.45);background:linear-gradient(135deg,var(--color-brand-light),var(--color-brand))}
        .btn-outline{display:inline-flex;align-items:center;gap:8px;padding:11px 26px;border:2px solid var(--color-brand);color:var(--color-brand);font-weight:600;border-radius:var(--radius-md);font-size:0.95rem;transition:all var(--transition-fast)}
        .btn-outline:hover{background:rgba(212,168,83,0.1);transform:translateY(-2px)}

        /* Related section */
        .related-section{padding:20px 40px 50px}
        .related-inner{max-width:860px;margin:0 auto}
        .related-inner h3{font-size:1.3rem;font-weight:700;color:#fff;margin-bottom:22px;display:flex;align-items:center;gap:10px}
        .related-inner h3::after{content:'';flex:1;height:1px;background:var(--color-border)}
        .related-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:18px}
        .related-card{background:var(--color-surface-card);border:1px solid var(--color-border);border-radius:var(--radius-md);overflow:hidden;transition:all var(--transition-fast);display:flex;flex-direction:column}
        .related-card:hover{border-color:var(--color-brand-dark);transform:translateY(-3px);box-shadow:var(--shadow-elevated)}
        .related-card img{width:100%;height:150px;object-fit:cover}
        .related-card-body{padding:16px 18px;flex:1;display:flex;flex-direction:column}
        .related-card-body h4{font-size:0.95rem;font-weight:600;color:var(--color-text-primary);margin-bottom:6px;line-height:1.4}
        .related-card-body p{font-size:0.82rem;color:var(--color-text-muted);line-height:1.5;flex:1}
        .related-card-body .read-more{font-size:0.8rem;color:var(--color-brand);font-weight:500;margin-top:10px;display:inline-flex;align-items:center;gap:4px}
        .related-card-body .read-more:hover{color:var(--color-brand-light)}

        /* FAQ */
        .faq-section{padding:40px 40px 60px}
        .faq-inner{max-width:860px;margin:0 auto}
        .faq-inner h3{font-size:1.3rem;font-weight:700;color:#fff;margin-bottom:24px;text-align:center}
        .faq-list{display:flex;flex-direction:column;gap:10px}
        .faq-item{background:var(--color-surface-card);border:1px solid var(--color-border);border-radius:var(--radius-md);overflow:hidden;transition:all var(--transition-fast)}
        .faq-item:hover{border-color:var(--color-border-light)}
        .faq-question{padding:18px 22px;font-weight:600;color:var(--color-text-primary);cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:0.98rem;user-select:none}
        .faq-question .faq-icon{flex-shrink:0;font-size:0.75rem;color:var(--color-brand);transition:transform var(--transition-fast)}
        .faq-item.open .faq-question .faq-icon{transform:rotate(180deg)}
        .faq-answer{padding:0 22px 18px;color:var(--color-text-secondary);font-size:0.9rem;line-height:1.7;display:none}
        .faq-item.open .faq-answer{display:block}

        /* Footer */
        .app-footer{padding:28px 40px 24px;border-top:1px solid var(--color-border);text-align:center;background:var(--color-surface-deeper)}
        .footer-brand{font-size:1rem;font-weight:700;color:var(--color-brand);margin-bottom:10px}
        .footer-links{display:flex;flex-wrap:wrap;justify-content:center;gap:20px;margin-bottom:8px}
        .footer-links a{font-size:0.85rem;color:var(--color-text-muted);transition:color var(--transition-fast)}
        .footer-links a:hover{color:var(--color-brand)}

        /* Responsive */
        @media (max-width:1023px){
            .app-sidebar{transform:translateX(-100%)}
            .app-sidebar.mobile-open{transform:translateX(0);box-shadow:var(--shadow-elevated)}
            .mobile-header{display:flex}
            .main-content{margin-left:0}
            .article-banner{padding:44px 20px 36px;margin-top:56px}
            .article-banner h1{font-size:1.6rem}
            .article-body-section{padding:24px 16px 16px}
            .article-body-card{padding:28px 20px}
            .article-content{font-size:0.95rem}
            .article-content h2{font-size:1.3rem}
            .article-content h3{font-size:1.1rem}
            .article-cta-section{padding:20px 16px 36px}
            .article-cta-card{padding:24px 20px}
            .related-section{padding:16px 16px 36px}
            .related-grid{grid-template-columns:1fr}
            .faq-section{padding:24px 16px 40px}
            .not-found-section{padding:60px 20px;margin-top:56px}
            .not-found-section h1{font-size:1.5rem}
            .app-footer{padding:20px 16px}
        }
        @media (min-width:1024px){
            .mobile-header{display:none !important}
            .app-sidebar{transform:translateX(0) !important}
            .sidebar-overlay{display:none !important}
        }
        @media (max-width:640px){
            .article-banner h1{font-size:1.35rem}
            .article-body-card{padding:20px 14px;border-radius:var(--radius-md)}
            .article-content{font-size:0.9rem}
            .article-meta{font-size:0.78rem;gap:10px}
            .btn-brand,.btn-outline{padding:10px 20px;font-size:0.85rem}
            .article-cta-card h3{font-size:1.1rem}
            .faq-question{font-size:0.9rem;padding:14px 16px}
            .faq-answer{padding:0 16px 14px;font-size:0.84rem}
        }