/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #6C5CE7;
            --primary-dark: #5a4bd1;
            --primary-light: #8b7cf0;
            --secondary: #00D2D3;
            --secondary-dark: #00b3b4;
            --accent: #FD79A8;
            --accent-dark: #e86a94;
            --bg-dark: #0d0d1a;
            --bg-card: #1a1a2e;
            --bg-card-hover: #22223a;
            --bg-sidebar: #0a0a14;
            --text-light: #ffffff;
            --text-muted: #a0a0b8;
            --text-dim: #6a6a82;
            --border-color: #2a2a42;
            --border-glow: rgba(108, 92, 231, 0.3);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 20px rgba(108, 92, 231, 0.15);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --sidebar-width: 260px;
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-sans);
            background: var(--bg-dark);
            color: var(--text-light);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--secondary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-light);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            outline: none;
        }
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        a:focus-visible {
            outline: 2px solid var(--secondary);
            outline-offset: 2px;
        }
        ul,
        ol {
            padding-left: 0;
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            margin-top: 0;
            color: var(--text-light);
        }
        p {
            margin-top: 0;
            color: var(--text-muted);
        }
        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ===== 布局 ===== */
        .app-wrapper {
            display: flex;
            min-height: 100vh;
        }
        .sidebar {
            width: var(--sidebar-width);
            background: var(--bg-sidebar);
            border-right: 1px solid var(--border-color);
            padding: 0;
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            z-index: 1040;
            display: flex;
            flex-direction: column;
            transition: var(--transition);
            overflow-y: auto;
        }
        .sidebar-brand {
            padding: 28px 24px 20px;
            border-bottom: 1px solid var(--border-color);
        }
        .sidebar-brand .logo-text {
            font-size: 1.35rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary-light), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
        }
        .sidebar-brand .logo-sub {
            font-size: 0.72rem;
            color: var(--text-dim);
            letter-spacing: 1px;
            margin-top: 2px;
            -webkit-text-fill-color: var(--text-dim);
        }
        .sidebar-nav {
            padding: 16px 12px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            color: var(--text-muted);
            font-size: 0.92rem;
            font-weight: 500;
            transition: var(--transition);
            position: relative;
        }
        .sidebar-nav a i {
            width: 20px;
            text-align: center;
            font-size: 1rem;
            color: var(--text-dim);
            transition: var(--transition);
        }
        .sidebar-nav a:hover {
            background: rgba(108, 92, 231, 0.1);
            color: var(--text-light);
        }
        .sidebar-nav a:hover i {
            color: var(--primary-light);
        }
        .sidebar-nav a.active {
            background: linear-gradient(135deg, rgba(108, 92, 231, 0.2), rgba(0, 210, 211, 0.08));
            color: var(--text-light);
            border: 1px solid var(--border-glow);
            box-shadow: 0 0 20px rgba(108, 92, 231, 0.05);
        }
        .sidebar-nav a.active i {
            color: var(--secondary);
        }
        .sidebar-nav a.active::before {
            content: '';
            position: absolute;
            left: -12px;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 20px;
            background: var(--secondary);
            border-radius: 0 4px 4px 0;
            box-shadow: 0 0 12px rgba(0, 210, 211, 0.4);
        }
        .sidebar-footer {
            padding: 16px 20px 24px;
            border-top: 1px solid var(--border-color);
            font-size: 0.75rem;
            color: var(--text-dim);
        }

        .main-content {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-width: 0;
        }

        /* ===== 移动端导航 ===== */
        .mobile-nav {
            display: none;
            background: var(--bg-sidebar);
            border-bottom: 1px solid var(--border-color);
            padding: 12px 20px;
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: var(--shadow-sm);
        }
        .mobile-nav .navbar-brand {
            font-size: 1.2rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary-light), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            padding: 0;
        }
        .mobile-nav .navbar-toggler {
            border: 1px solid var(--border-color);
            color: var(--text-light);
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            background: transparent;
        }
        .mobile-nav .navbar-toggler:focus {
            box-shadow: 0 0 0 2px var(--border-glow);
        }
        .mobile-nav .navbar-toggler-icon {
            background-image: none !important;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 24px;
            height: 24px;
        }
        .mobile-nav .navbar-toggler-icon::after {
            content: '\f0c9';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 1.2rem;
            color: var(--text-light);
        }
        .mobile-nav .offcanvas {
            background: var(--bg-sidebar);
            border-right: 1px solid var(--border-color);
        }
        .mobile-nav .offcanvas-header {
            border-bottom: 1px solid var(--border-color);
            padding: 20px 24px;
        }
        .mobile-nav .offcanvas-body {
            padding: 16px 20px;
        }
        .mobile-nav .offcanvas-body .nav-link {
            color: var(--text-muted);
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            transition: var(--transition);
        }
        .mobile-nav .offcanvas-body .nav-link:hover {
            color: var(--text-light);
            background: rgba(108, 92, 231, 0.1);
        }
        .mobile-nav .offcanvas-body .nav-link.active {
            color: var(--text-light);
            background: linear-gradient(135deg, rgba(108, 92, 231, 0.2), rgba(0, 210, 211, 0.08));
            border: 1px solid var(--border-glow);
        }
        .mobile-nav .btn-close {
            filter: brightness(0) invert(1);
            opacity: 0.6;
        }
        .mobile-nav .btn-close:focus {
            box-shadow: 0 0 0 2px var(--border-glow);
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            padding: 120px 0 100px;
            background: linear-gradient(135deg, rgba(13, 13, 26, 0.92), rgba(26, 26, 46, 0.88)),
                url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            overflow: hidden;
            border-bottom: 1px solid var(--border-color);
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(108, 92, 231, 0.12), transparent 70%);
            pointer-events: none;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0, 210, 211, 0.08), transparent 70%);
            pointer-events: none;
        }
        .hero-section .container {
            position: relative;
            z-index: 2;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(108, 92, 231, 0.15);
            border: 1px solid rgba(108, 92, 231, 0.25);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.8rem;
            color: var(--primary-light);
            margin-bottom: 24px;
            letter-spacing: 0.5px;
        }
        .hero-badge i {
            font-size: 0.7rem;
            color: var(--secondary);
        }
        .hero-title {
            font-size: 3.2rem;
            font-weight: 800;
            line-height: 1.15;
            margin-bottom: 20px;
            letter-spacing: -1px;
        }
        .hero-title .highlight {
            background: linear-gradient(135deg, var(--primary-light), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-desc {
            font-size: 1.15rem;
            color: var(--text-muted);
            max-width: 600px;
            margin-bottom: 36px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
        }
        .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 50px;
            padding-top: 36px;
            border-top: 1px solid var(--border-color);
        }
        .hero-stat-item h4 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 0;
            background: linear-gradient(135deg, var(--secondary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-stat-item p {
            font-size: 0.85rem;
            color: var(--text-dim);
            margin-bottom: 0;
        }

        /* ===== Buttons ===== */
        .btn-custom {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
        }
        .btn-primary-custom {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: 0 4px 20px rgba(108, 92, 231, 0.35);
        }
        .btn-primary-custom:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(108, 92, 231, 0.45);
            color: #fff;
        }
        .btn-primary-custom:active {
            transform: translateY(0);
        }
        .btn-secondary-custom {
            background: transparent;
            color: var(--text-light);
            border: 1px solid var(--border-color);
        }
        .btn-secondary-custom:hover {
            border-color: var(--primary);
            color: var(--text-light);
            background: rgba(108, 92, 231, 0.08);
            transform: translateY(-2px);
        }
        .btn-glow {
            background: linear-gradient(135deg, var(--secondary), #00a8a9);
            color: #0d0d1a;
            font-weight: 700;
            box-shadow: 0 4px 24px rgba(0, 210, 211, 0.3);
        }
        .btn-glow:hover {
            transform: translateY(-2px) scale(1.02);
            box-shadow: 0 8px 36px rgba(0, 210, 211, 0.4);
            color: #0d0d1a;
        }

        /* ===== Section通用 ===== */
        .section-padding {
            padding: 90px 0;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--secondary);
            letter-spacing: 2px;
            text-transform: uppercase;
            margin-bottom: 12px;
        }
        .section-label i {
            font-size: 0.6rem;
        }
        .section-title {
            font-size: 2.4rem;
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .section-sub {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 640px;
            margin-bottom: 48px;
        }
        .section-divider {
            width: 60px;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            border-radius: 4px;
            margin-bottom: 32px;
        }

        /* ===== Card ===== */
        .card-custom {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: var(--transition);
            height: 100%;
        }
        .card-custom:hover {
            background: var(--bg-card-hover);
            border-color: rgba(108, 92, 231, 0.3);
            transform: translateY(-4px);
            box-shadow: var(--shadow-glow);
        }
        .card-custom .card-icon {
            width: 52px;
            height: 52px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            background: rgba(108, 92, 231, 0.12);
            color: var(--primary-light);
            font-size: 1.4rem;
            margin-bottom: 18px;
            transition: var(--transition);
        }
        .card-custom:hover .card-icon {
            background: linear-gradient(135deg, rgba(108, 92, 231, 0.2), rgba(0, 210, 211, 0.1));
        }
        .card-custom h5 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .card-custom p {
            font-size: 0.92rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }
        .card-custom .card-tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 50px;
            font-size: 0.72rem;
            font-weight: 600;
            background: rgba(0, 210, 211, 0.1);
            color: var(--secondary);
            margin-bottom: 14px;
        }

        /* ===== Cover Card ===== */
        .cover-card {
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .cover-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-glow);
            border-color: rgba(108, 92, 231, 0.3);
        }
        .cover-card .cover-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .cover-card:hover .cover-img {
            transform: scale(1.02);
        }
        .cover-card .cover-body {
            padding: 22px 20px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .cover-card .cover-body h5 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            transition: var(--transition);
        }
        .cover-card:hover .cover-body h5 {
            color: var(--primary-light);
        }
        .cover-card .cover-body p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 14px;
            flex: 1;
        }
        .cover-card .cover-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.78rem;
            color: var(--text-dim);
        }
        .cover-card .cover-meta i {
            margin-right: 4px;
        }
        .cover-link {
            text-decoration: none;
            color: inherit;
        }
        .cover-link:hover {
            color: inherit;
        }

        /* ===== 分类卡片 ===== */
        .category-card {
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            height: 100%;
            position: relative;
            min-height: 300px;
            display: flex;
            align-items: flex-end;
        }
        .category-card .cat-bg {
            position: absolute;
            inset: 0;
            object-fit: cover;
            transition: var(--transition);
            opacity: 0.5;
        }
        .category-card:hover .cat-bg {
            transform: scale(1.05);
            opacity: 0.7;
        }
        .category-card .cat-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(13, 13, 26, 0.95) 30%, rgba(13, 13, 26, 0.3) 100%);
            z-index: 1;
        }
        .category-card .cat-content {
            position: relative;
            z-index: 2;
            padding: 28px 24px;
            width: 100%;
        }
        .category-card .cat-content h5 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .category-card .cat-content p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 16px;
            max-width: 280px;
        }
        .category-card .cat-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--secondary);
            transition: var(--transition);
        }
        .category-card .cat-btn i {
            transition: var(--transition);
        }
        .category-card:hover .cat-btn i {
            transform: translateX(4px);
        }

        /* ===== 流程步骤 ===== */
        .step-item {
            display: flex;
            gap: 20px;
            padding: 24px 20px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            transition: var(--transition);
            margin-bottom: 16px;
        }
        .step-item:hover {
            border-color: rgba(108, 92, 231, 0.2);
            background: var(--bg-card-hover);
        }
        .step-number {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: linear-gradient(135deg, rgba(108, 92, 231, 0.2), rgba(0, 210, 211, 0.1));
            color: var(--secondary);
            font-weight: 800;
            font-size: 1.1rem;
            border: 1px solid var(--border-glow);
        }
        .step-content h6 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .step-content p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ===== 数据块 ===== */
        .stat-block {
            text-align: center;
            padding: 32px 20px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            transition: var(--transition);
        }
        .stat-block:hover {
            border-color: rgba(108, 92, 231, 0.3);
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow);
        }
        .stat-block .stat-num {
            font-size: 2.6rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--secondary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 4px;
        }
        .stat-block .stat-label {
            font-size: 0.92rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }
        .stat-block .stat-icon {
            font-size: 2rem;
            color: var(--primary-light);
            margin-bottom: 12px;
            opacity: 0.6;
        }

        /* ===== FAQ ===== */
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(108, 92, 231, 0.2);
        }
        .faq-question {
            padding: 18px 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-weight: 600;
            font-size: 0.98rem;
            color: var(--text-light);
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
            gap: 16px;
        }
        .faq-question:hover {
            color: var(--primary-light);
        }
        .faq-question i {
            color: var(--secondary);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 22px 18px;
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.8;
        }
        .faq-answer p:last-child {
            margin-bottom: 0;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, rgba(108, 92, 231, 0.08), rgba(0, 210, 211, 0.04));
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .cta-box {
            background: linear-gradient(135deg, var(--bg-card), #1e1e36);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            text-align: center;
            box-shadow: var(--shadow-glow);
        }
        .cta-box h3 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .cta-box p {
            color: var(--text-muted);
            max-width: 520px;
            margin: 0 auto 28px;
            font-size: 1rem;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-sidebar);
            border-top: 1px solid var(--border-color);
            padding: 48px 0 32px;
        }
        .footer-brand {
            font-size: 1.1rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary-light), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 8px;
        }
        .footer-desc {
            font-size: 0.85rem;
            color: var(--text-dim);
            max-width: 300px;
            margin-bottom: 20px;
        }
        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 8px 20px;
        }
        .footer-links a {
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--secondary);
        }
        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 16px;
        }
        .footer-social a {
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-color);
            color: var(--text-muted);
            font-size: 0.95rem;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: rgba(108, 92, 231, 0.15);
            border-color: var(--primary);
            color: var(--primary-light);
            transform: translateY(-2px);
        }
        .footer-bottom {
            margin-top: 32px;
            padding-top: 20px;
            border-top: 1px solid var(--border-color);
            font-size: 0.78rem;
            color: var(--text-dim);
            text-align: center;
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--secondary);
        }

        /* ===== 文章列表项 ===== */
        .post-item {
            display: flex;
            gap: 18px;
            padding: 18px 20px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            transition: var(--transition);
            margin-bottom: 12px;
            align-items: flex-start;
        }
        .post-item:hover {
            background: var(--bg-card-hover);
            border-color: rgba(108, 92, 231, 0.2);
            transform: translateX(4px);
        }
        .post-item .post-thumb {
            width: 80px;
            height: 60px;
            border-radius: 6px;
            object-fit: cover;
            flex-shrink: 0;
            border: 1px solid var(--border-color);
        }
        .post-item .post-info {
            flex: 1;
            min-width: 0;
        }
        .post-item .post-info h6 {
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 4px;
            transition: var(--transition);
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        .post-item:hover .post-info h6 {
            color: var(--primary-light);
        }
        .post-item .post-info p {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-bottom: 4px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .post-item .post-meta {
            font-size: 0.72rem;
            color: var(--text-dim);
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .post-item .post-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .post-item .post-meta .cat-tag {
            display: inline-block;
            padding: 1px 10px;
            border-radius: 50px;
            background: rgba(108, 92, 231, 0.1);
            color: var(--primary-light);
            font-size: 0.7rem;
            font-weight: 500;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1199.98px) {
            .hero-title {
                font-size: 2.8rem;
            }
            .section-title {
                font-size: 2rem;
            }
        }

        @media (max-width: 991.98px) {
            .sidebar {
                display: none;
            }
            .mobile-nav {
                display: block;
            }
            .main-content {
                margin-left: 0;
            }
            .hero-section {
                padding: 80px 0 70px;
            }
            .hero-title {
                font-size: 2.2rem;
            }
            .hero-stats {
                gap: 24px;
                flex-wrap: wrap;
            }
            .hero-stat-item h4 {
                font-size: 1.5rem;
            }
            .section-padding {
                padding: 60px 0;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .cta-box {
                padding: 40px 28px;
            }
            .cta-box h3 {
                font-size: 1.4rem;
            }
            .category-card {
                min-height: 240px;
            }
        }

        @media (max-width: 767.98px) {
            .hero-title {
                font-size: 1.7rem;
            }
            .hero-desc {
                font-size: 0.95rem;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn-custom {
                width: 100%;
                justify-content: center;
            }
            .hero-stats {
                flex-direction: column;
                gap: 16px;
                margin-top: 30px;
                padding-top: 24px;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .section-sub {
                font-size: 0.92rem;
                margin-bottom: 32px;
            }
            .section-padding {
                padding: 48px 0;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .cover-card .cover-img {
                height: 160px;
            }
            .category-card {
                min-height: 200px;
            }
            .category-card .cat-content {
                padding: 20px 18px;
            }
            .category-card .cat-content h5 {
                font-size: 1.1rem;
            }
            .step-item {
                flex-direction: column;
                gap: 12px;
                padding: 18px 16px;
            }
            .step-number {
                width: 36px;
                height: 36px;
                font-size: 0.95rem;
            }
            .stat-block .stat-num {
                font-size: 2rem;
            }
            .cta-box {
                padding: 32px 20px;
            }
            .cta-box h3 {
                font-size: 1.2rem;
            }
            .faq-question {
                font-size: 0.88rem;
                padding: 14px 16px;
            }
            .faq-answer {
                padding: 0 16px 14px;
                font-size: 0.84rem;
            }
            .post-item {
                flex-direction: column;
                gap: 12px;
                padding: 14px 16px;
            }
            .post-item .post-thumb {
                width: 100%;
                height: 120px;
            }
            .post-item .post-info h6 {
                white-space: normal;
            }
            .footer {
                padding: 32px 0 24px;
            }
            .footer-links {
                flex-direction: column;
                gap: 6px;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.4rem;
            }
            .hero-section {
                padding: 60px 0 50px;
            }
            .section-title {
                font-size: 1.25rem;
            }
            .hero-badge {
                font-size: 0.7rem;
                padding: 4px 12px;
            }
            .btn-custom {
                padding: 12px 24px;
                font-size: 0.85rem;
            }
            .cover-card .cover-img {
                height: 130px;
            }
            .category-card .cat-content h5 {
                font-size: 1rem;
            }
            .card-custom {
                padding: 20px 16px;
            }
            .card-custom .card-icon {
                width: 42px;
                height: 42px;
                font-size: 1.1rem;
            }
            .stat-block {
                padding: 24px 16px;
            }
            .stat-block .stat-num {
                font-size: 1.7rem;
            }
        }

        /* ===== 工具类 ===== */
        .text-gradient {
            background: linear-gradient(135deg, var(--primary-light), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .glow-border {
            border: 1px solid var(--border-glow);
            box-shadow: 0 0 24px rgba(108, 92, 231, 0.06);
        }
        .bg-card {
            background: var(--bg-card);
        }
        .gap-2 {
            gap: 8px;
        }
        .gap-3 {
            gap: 16px;
        }
        .gap-4 {
            gap: 24px;
        }
        .mb-0 {
            margin-bottom: 0;
        }
        .mt-2 {
            margin-top: 8px;
        }
        .mt-3 {
            margin-top: 16px;
        }
        .mt-4 {
            margin-top: 24px;
        }

        /* ===== 滚动条 ===== */
        .sidebar::-webkit-scrollbar {
            width: 4px;
        }
        .sidebar::-webkit-scrollbar-track {
            background: transparent;
        }
        .sidebar::-webkit-scrollbar-thumb {
            background: var(--border-color);
            border-radius: 4px;
        }
        .sidebar::-webkit-scrollbar-thumb:hover {
            background: var(--text-dim);
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #00d4ff;
            --primary-dark: #00a8cc;
            --primary-light: #66e5ff;
            --accent: #ff6b35;
            --accent-light: #ff8f66;
            --bg-dark: #0b0f1a;
            --bg-card: #131a2e;
            --bg-card-hover: #1a2340;
            --bg-section-alt: #0f1524;
            --text-light: #f0f4ff;
            --text-body: #c8d0e0;
            --text-muted: #7a85a0;
            --border-color: #1e2a45;
            --border-light: #2a3a5a;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.45);
            --shadow-hover: 0 14px 48px rgba(0, 212, 255, 0.10);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --sidebar-width: 240px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

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

        body {
            font-family: var(--font-base);
            background: var(--bg-dark);
            color: var(--text-body);
            line-height: 1.7;
            font-size: 1rem;
            min-height: 100vh;
            display: flex;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-light);
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: transparent;
            color: inherit;
        }

        /* ===== 左侧导航 ===== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--bg-card);
            border-right: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            z-index: 1050;
            overflow-y: auto;
            padding: 0;
            transition: transform var(--transition);
        }

        .sidebar-brand {
            display: flex;
            align-items: center;
            padding: 24px 20px 20px;
            border-bottom: 1px solid var(--border-color);
        }

        .sidebar-brand .brand-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: #fff;
            margin-right: 12px;
            flex-shrink: 0;
        }

        .sidebar-brand .brand-text {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-light);
            letter-spacing: 0.3px;
            line-height: 1.3;
        }

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

        .sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            color: var(--text-muted);
            font-size: 0.92rem;
            font-weight: 500;
            transition: all var(--transition);
            position: relative;
        }

        .sidebar-nav a i {
            width: 20px;
            text-align: center;
            font-size: 1rem;
            flex-shrink: 0;
        }

        .sidebar-nav a:hover {
            color: var(--text-light);
            background: rgba(0, 212, 255, 0.07);
        }

        .sidebar-nav a.active {
            color: var(--primary);
            background: rgba(0, 212, 255, 0.12);
            box-shadow: inset 3px 0 0 var(--primary);
        }

        .sidebar-nav a.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 24px;
            background: var(--primary);
            border-radius: 0 3px 3px 0;
        }

        /* ===== 主内容区 ===== */
        .main-wrapper {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* ===== 文章 Banner ===== */
        .article-banner {
            position: relative;
            padding: 80px 0 60px;
            background: var(--bg-section-alt);
            border-bottom: 1px solid var(--border-color);
            overflow: hidden;
        }

        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.12;
            pointer-events: none;
        }

        .article-banner .container {
            position: relative;
            z-index: 2;
        }

        .article-breadcrumb {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            align-items: center;
        }

        .article-breadcrumb a {
            color: var(--text-muted);
        }
        .article-breadcrumb a:hover {
            color: var(--primary);
        }
        .article-breadcrumb .separator {
            color: var(--border-light);
            margin: 0 4px;
        }

        .article-category-badge {
            display: inline-block;
            background: rgba(0, 212, 255, 0.15);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 30px;
            margin-bottom: 16px;
            border: 1px solid rgba(0, 212, 255, 0.2);
        }

        .article-title {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--text-light);
            line-height: 1.25;
            margin-bottom: 16px;
            max-width: 900px;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            align-items: center;
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        .article-meta i {
            margin-right: 6px;
            color: var(--primary);
        }

        .article-meta span {
            display: flex;
            align-items: center;
        }

        /* ===== 文章正文 ===== */
        .article-content-section {
            padding: 60px 0 80px;
            background: var(--bg-dark);
        }

        .article-body {
            max-width: 840px;
            margin: 0 auto;
        }

        .article-body .content {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-body);
        }

        .article-body .content p {
            margin-bottom: 1.5rem;
        }

        .article-body .content h2,
        .article-body .content h3,
        .article-body .content h4 {
            color: var(--text-light);
            font-weight: 700;
            margin-top: 2.2rem;
            margin-bottom: 1rem;
        }

        .article-body .content h2 {
            font-size: 1.6rem;
        }
        .article-body .content h3 {
            font-size: 1.3rem;
        }

        .article-body .content img {
            border-radius: var(--radius-md);
            margin: 1.8rem 0;
            box-shadow: var(--shadow-card);
        }

        .article-body .content blockquote {
            border-left: 4px solid var(--primary);
            background: var(--bg-card);
            padding: 20px 24px;
            margin: 1.8rem 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-body);
            font-style: italic;
        }

        .article-body .content ul,
        .article-body .content ol {
            padding-left: 1.5rem;
            margin-bottom: 1.5rem;
        }

        .article-body .content li {
            margin-bottom: 0.5rem;
        }

        .article-body .content a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 2px;
        }

        .article-body .content a:hover {
            color: var(--primary-light);
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 40px;
            padding-top: 28px;
            border-top: 1px solid var(--border-color);
        }

        .article-tags .tag {
            background: var(--bg-card);
            color: var(--text-muted);
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 0.82rem;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
        }

        .article-tags .tag:hover {
            background: var(--bg-card-hover);
            color: var(--primary);
            border-color: var(--primary);
        }

        .article-nav-links {
            display: flex;
            justify-content: space-between;
            margin-top: 48px;
            gap: 20px;
            flex-wrap: wrap;
        }

        .article-nav-links a {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 12px 24px;
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            color: var(--text-body);
            font-size: 0.92rem;
            transition: all var(--transition);
        }

        .article-nav-links a:hover {
            background: var(--bg-card-hover);
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
        }

        /* ===== 相关推荐 ===== */
        .related-section {
            background: var(--bg-section-alt);
            padding: 60px 0;
            border-top: 1px solid var(--border-color);
        }

        .related-section .section-title {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 32px;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .related-section .section-title i {
            color: var(--primary);
        }

        .related-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
            height: 100%;
        }

        .related-card:hover {
            transform: translateY(-6px);
            border-color: var(--primary);
            box-shadow: var(--shadow-hover);
        }

        .related-card .card-img {
            height: 180px;
            background: var(--bg-card-hover);
            position: relative;
            overflow: hidden;
        }

        .related-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
        }

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

        .related-card .card-body .card-category {
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 8px;
        }

        .related-card .card-body .card-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 8px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card .card-body .card-text {
            font-size: 0.88rem;
            color: var(--text-muted);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card .card-body .card-date {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 12px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-card);
            border-top: 1px solid var(--border-color);
            padding: 48px 0 28px;
            margin-top: auto;
        }

        .footer .footer-brand {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 12px;
        }

        .footer .footer-desc {
            font-size: 0.88rem;
            color: var(--text-muted);
            max-width: 360px;
            line-height: 1.7;
        }

        .footer .footer-social {
            display: flex;
            gap: 14px;
            margin-top: 18px;
        }

        .footer .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--bg-section-alt);
            color: var(--text-muted);
            font-size: 1.1rem;
            transition: all var(--transition);
            border: 1px solid var(--border-color);
        }

        .footer .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-3px);
        }

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

        .footer .footer-links a {
            color: var(--text-muted);
            font-size: 0.88rem;
            transition: color var(--transition);
        }

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

        .footer .footer-bottom {
            margin-top: 36px;
            padding-top: 20px;
            border-top: 1px solid var(--border-color);
            text-align: center;
            font-size: 0.84rem;
            color: var(--text-muted);
        }

        .footer .footer-bottom a {
            color: var(--text-muted);
        }
        .footer .footer-bottom a:hover {
            color: var(--primary);
        }

        /* ===== 内容未找到 ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 20px;
            max-width: 600px;
            margin: 0 auto;
        }

        .not-found-box .nf-icon {
            font-size: 4rem;
            color: var(--text-muted);
            margin-bottom: 24px;
            opacity: 0.4;
        }

        .not-found-box h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 12px;
        }

        .not-found-box p {
            color: var(--text-muted);
            margin-bottom: 28px;
        }

        .not-found-box .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            background: var(--primary);
            color: #000;
            font-weight: 600;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
        }

        .not-found-box .btn-back:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 212, 255, 0.25);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .sidebar {
                transform: translateX(-100%);
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .main-wrapper {
                margin-left: 0;
            }
            .article-title {
                font-size: 2rem;
            }
            .mobile-nav-toggle {
                display: flex !important;
            }
        }

        .mobile-nav-toggle {
            display: none;
            position: fixed;
            top: 16px;
            left: 16px;
            z-index: 1060;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            color: var(--text-light);
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            cursor: pointer;
            transition: all var(--transition);
            box-shadow: var(--shadow-card);
        }

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

        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 1045;
            backdrop-filter: blur(4px);
        }

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

        @media (max-width: 768px) {
            .article-banner {
                padding: 60px 0 40px;
            }
            .article-title {
                font-size: 1.6rem;
            }
            .article-meta {
                gap: 12px;
                font-size: 0.82rem;
            }
            .article-body .content {
                font-size: 0.98rem;
            }
            .article-body .content h2 {
                font-size: 1.3rem;
            }
            .article-body .content h3 {
                font-size: 1.1rem;
            }
            .related-section .section-title {
                font-size: 1.3rem;
            }
            .related-card .card-img {
                height: 140px;
            }
            .footer .footer-brand {
                font-size: 1rem;
            }
            .article-nav-links {
                flex-direction: column;
            }
            .article-nav-links a {
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            .article-banner {
                padding: 50px 0 30px;
            }
            .article-title {
                font-size: 1.3rem;
            }
            .article-meta {
                flex-wrap: wrap;
                gap: 8px;
            }
            .article-meta span {
                font-size: 0.78rem;
            }
            .article-body .content {
                font-size: 0.92rem;
            }
            .article-body .content h2 {
                font-size: 1.15rem;
            }
            .article-body .content h3 {
                font-size: 1rem;
            }
            .article-category-badge {
                font-size: 0.7rem;
                padding: 3px 12px;
            }
            .related-card .card-img {
                height: 120px;
            }
            .footer {
                padding: 32px 0 20px;
            }
            .footer .footer-social a {
                width: 36px;
                height: 36px;
                font-size: 0.95rem;
            }
            .sidebar {
                width: 200px;
            }
            .sidebar-brand .brand-text {
                font-size: 0.9rem;
            }
            .sidebar-nav a {
                font-size: 0.84rem;
                padding: 10px 12px;
            }
        }

/* roulang page: category1 */
/* ========== 设计变量 ========== */
        :root {
            --primary: #0d1b2a;
            --primary-light: #1b2838;
            --primary-dark: #070c14;
            --accent: #00ff88;
            --accent2: #00d4ff;
            --accent3: #7c3aed;
            --accent-gradient: linear-gradient(135deg, #00ff88 0%, #00d4ff 50%, #7c3aed 100%);
            --bg-dark: #0a0e17;
            --bg-card: #111827;
            --bg-card-hover: #1a2332;
            --text-light: #f0f4f8;
            --text-muted: #94a3b8;
            --text-weak: #64748b;
            --border-color: #1e293b;
            --border-glow: rgba(0, 255, 136, 0.15);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 30px rgba(0, 255, 136, 0.08);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --sidebar-width: 250px;
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
        }

        /* ========== 基础重置 ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

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

        body {
            font-family: var(--font-sans);
            background: var(--bg-dark);
            color: var(--text-light);
            line-height: 1.7;
            overflow-x: hidden;
            min-height: 100vh;
        }

        a {
            color: var(--accent2);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 4px;
            border-radius: 4px;
        }

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }

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

        ul,
        ol {
            list-style: none;
        }

        /* ========== 容器 ========== */
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 768px) {
            .container-custom {
                padding: 0 16px;
            }
        }

        /* ========== 站点整体布局 ========== */
        .site-wrapper {
            display: flex;
            min-height: 100vh;
        }

        /* ========== 侧边栏（左侧导航） ========== */
        .sidebar {
            width: var(--sidebar-width);
            background: var(--primary);
            border-right: 1px solid var(--border-color);
            padding: 32px 20px;
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            z-index: 1040;
            display: flex;
            flex-direction: column;
            overflow-y: auto;
            transition: var(--transition);
            box-shadow: 2px 0 30px rgba(0, 0, 0, 0.3);
        }

        .sidebar-brand {
            font-size: 1.25rem;
            font-weight: 800;
            background: var(--accent-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 36px;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--border-color);
            letter-spacing: 0.02em;
            line-height: 1.3;
        }

        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 6px;
            flex: 1;
        }

        .sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 13px 16px;
            border-radius: var(--radius-sm);
            color: var(--text-muted);
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
            position: relative;
            border: 1px solid transparent;
        }

        .sidebar-nav a i {
            width: 22px;
            text-align: center;
            font-size: 1.1rem;
            color: var(--text-weak);
            transition: var(--transition);
        }

        .sidebar-nav a:hover {
            background: var(--bg-card);
            color: var(--text-light);
            border-color: var(--border-color);
        }
        .sidebar-nav a:hover i {
            color: var(--accent);
        }

        .sidebar-nav a.active {
            background: rgba(0, 255, 136, 0.07);
            color: var(--accent);
            border-color: var(--border-glow);
            box-shadow: 0 0 20px rgba(0, 255, 136, 0.04);
        }
        .sidebar-nav a.active i {
            color: var(--accent);
        }
        .sidebar-nav a.active::before {
            content: '';
            position: absolute;
            left: -20px;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 24px;
            background: var(--accent);
            border-radius: 0 4px 4px 0;
            box-shadow: 0 0 12px rgba(0, 255, 136, 0.3);
        }

        /* 侧边栏底部 */
        .sidebar-footer {
            margin-top: auto;
            padding-top: 20px;
            border-top: 1px solid var(--border-color);
            font-size: 0.8rem;
            color: var(--text-weak);
            text-align: center;
        }

        /* ========== 主内容区 ========== */
        .main-content {
            flex: 1;
            margin-left: var(--sidebar-width);
            min-height: 100vh;
            background: var(--bg-dark);
            position: relative;
        }

        /* ========== 移动端顶部导航 ========== */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: rgba(13, 27, 42, 0.97);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            padding: 12px 16px;
            border-bottom: 1px solid var(--border-color);
            align-items: center;
            justify-content: space-between;
        }

        .mobile-header .brand {
            font-size: 1.1rem;
            font-weight: 800;
            background: var(--accent-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .mobile-menu-btn {
            background: transparent;
            border: none;
            color: var(--text-light);
            font-size: 1.6rem;
            padding: 4px 8px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .mobile-menu-btn:hover {
            color: var(--accent);
        }

        /* 移动端抽屉菜单 */
        .drawer-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.6);
            backdrop-filter: blur(6px);
            z-index: 1060;
        }
        .drawer-overlay.show {
            display: block;
        }

        .drawer-menu {
            position: fixed;
            top: 0;
            left: -280px;
            bottom: 0;
            width: 270px;
            background: var(--primary);
            z-index: 1070;
            padding: 28px 20px;
            transition: left 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            border-right: 1px solid var(--border-color);
            box-shadow: 4px 0 40px rgba(0, 0, 0, 0.5);
            overflow-y: auto;
        }
        .drawer-menu.open {
            left: 0;
        }
        .drawer-menu .drawer-brand {
            font-size: 1.15rem;
            font-weight: 800;
            background: var(--accent-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 32px;
            padding-bottom: 16px;
            border-bottom: 1px solid var(--border-color);
        }
        .drawer-menu .drawer-nav {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .drawer-menu .drawer-nav a {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 13px 16px;
            border-radius: var(--radius-sm);
            color: var(--text-muted);
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .drawer-menu .drawer-nav a i {
            width: 22px;
            text-align: center;
            color: var(--text-weak);
        }
        .drawer-menu .drawer-nav a:hover {
            background: var(--bg-card);
            color: var(--text-light);
        }
        .drawer-menu .drawer-nav a.active {
            background: rgba(0, 255, 136, 0.07);
            color: var(--accent);
            border-color: var(--border-glow);
        }
        .drawer-menu .drawer-nav a.active i {
            color: var(--accent);
        }
        .drawer-close {
            background: transparent;
            border: none;
            color: var(--text-muted);
            font-size: 1.5rem;
            position: absolute;
            top: 16px;
            right: 16px;
            transition: var(--transition);
        }
        .drawer-close:hover {
            color: var(--accent);
        }

        /* ========== Hero / Banner ========== */
        .category-hero {
            position: relative;
            padding: 80px 40px 70px;
            background: linear-gradient(135deg, rgba(13, 27, 42, 0.92) 0%, rgba(17, 24, 39, 0.88) 100%);
            border-bottom: 1px solid var(--border-color);
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.2;
            z-index: 0;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(0, 255, 136, 0.04) 0%, transparent 70%);
            z-index: 1;
        }
        .category-hero .hero-content {
            position: relative;
            z-index: 2;
            max-width: 700px;
        }
        .category-hero .hero-tag {
            display: inline-block;
            background: rgba(0, 255, 136, 0.12);
            color: var(--accent);
            padding: 4px 16px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            margin-bottom: 16px;
            border: 1px solid rgba(0, 255, 136, 0.15);
        }
        .category-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
            background: var(--accent-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .category-hero p {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 580px;
            margin-bottom: 0;
            line-height: 1.8;
        }
        .category-hero .hero-stats {
            display: flex;
            gap: 32px;
            margin-top: 28px;
        }
        .category-hero .hero-stats .stat-item {
            text-align: center;
        }
        .category-hero .hero-stats .stat-num {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--text-light);
            line-height: 1.2;
        }
        .category-hero .hero-stats .stat-num span {
            color: var(--accent);
        }
        .category-hero .hero-stats .stat-label {
            font-size: 0.8rem;
            color: var(--text-weak);
            margin-top: 2px;
        }

        @media (max-width: 768px) {
            .category-hero {
                padding: 60px 20px 50px;
                min-height: 260px;
            }
            .category-hero h1 {
                font-size: 1.9rem;
            }
            .category-hero p {
                font-size: 0.95rem;
            }
            .category-hero .hero-stats {
                gap: 20px;
                flex-wrap: wrap;
            }
            .category-hero .hero-stats .stat-num {
                font-size: 1.4rem;
            }
        }

        /* ========== 通用板块标题 ========== */
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 8px;
            color: var(--text-light);
            letter-spacing: -0.02em;
        }
        .section-subtitle {
            color: var(--text-muted);
            font-size: 1rem;
            max-width: 600px;
            margin-bottom: 32px;
        }
        .section-header {
            margin-bottom: 40px;
        }
        .section-title .highlight {
            background: var(--accent-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        @media (max-width: 768px) {
            .section-title {
                font-size: 1.5rem;
            }
            .section-subtitle {
                font-size: 0.9rem;
            }
        }

        /* ========== 卡片通用 ========== */
        .card-modern {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
        }
        .card-modern:hover {
            background: var(--bg-card-hover);
            border-color: rgba(0, 255, 136, 0.15);
            box-shadow: var(--shadow-glow);
            transform: translateY(-4px);
        }
        .card-modern .card-img-top {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            border-bottom: 1px solid var(--border-color);
        }
        .card-modern .card-body {
            padding: 24px;
        }
        .card-modern .card-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 2px 12px;
            border-radius: 50px;
            background: rgba(0, 212, 255, 0.1);
            color: var(--accent2);
            margin-bottom: 10px;
            border: 1px solid rgba(0, 212, 255, 0.12);
        }
        .card-modern .card-title {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-light);
            line-height: 1.4;
        }
        .card-modern .card-text {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 14px;
        }
        .card-modern .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--text-weak);
        }
        .card-modern .card-meta i {
            margin-right: 4px;
            color: var(--accent);
        }
        .card-modern .card-link {
            color: var(--accent);
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }
        .card-modern .card-link:hover {
            gap: 10px;
            color: var(--accent2);
        }

        /* ========== 按钮 ========== */
        .btn-custom {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            text-decoration: none;
        }
        .btn-custom-primary {
            background: var(--accent-gradient);
            color: #0a0e17;
            box-shadow: 0 4px 20px rgba(0, 255, 136, 0.2);
        }
        .btn-custom-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(0, 255, 136, 0.3);
            color: #0a0e17;
        }
        .btn-custom-outline {
            background: transparent;
            color: var(--accent);
            border: 2px solid var(--accent);
        }
        .btn-custom-outline:hover {
            background: rgba(0, 255, 136, 0.08);
            color: var(--accent);
            transform: translateY(-2px);
            box-shadow: 0 0 25px rgba(0, 255, 136, 0.08);
        }
        .btn-custom-sm {
            padding: 10px 24px;
            font-size: 0.85rem;
        }

        /* ========== 标签 / 徽章 ========== */
        .badge-custom {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(0, 255, 136, 0.1);
            color: var(--accent);
            border: 1px solid rgba(0, 255, 136, 0.12);
        }
        .badge-custom-hot {
            background: rgba(255, 107, 107, 0.12);
            color: #ff6b6b;
            border-color: rgba(255, 107, 107, 0.15);
        }
        .badge-custom-new {
            background: rgba(0, 212, 255, 0.1);
            color: var(--accent2);
            border-color: rgba(0, 212, 255, 0.12);
        }

        /* ========== 流程步骤 ========== */
        .step-item {
            display: flex;
            gap: 20px;
            padding: 24px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            transition: var(--transition);
            position: relative;
        }
        .step-item:hover {
            border-color: rgba(0, 255, 136, 0.12);
            box-shadow: var(--shadow-glow);
        }
        .step-number {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--accent-gradient);
            color: #0a0e17;
            font-weight: 800;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .step-content h5 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text-light);
        }
        .step-content p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.6;
        }
        .step-connector {
            display: flex;
            justify-content: center;
            padding: 4px 0;
            color: var(--accent);
            font-size: 1.2rem;
            opacity: 0.4;
        }

        /* ========== FAQ ========== */
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            padding: 20px 24px;
            margin-bottom: 12px;
            transition: var(--transition);
            cursor: pointer;
        }
        .faq-item:hover {
            border-color: rgba(0, 255, 136, 0.1);
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-light);
            gap: 12px;
        }
        .faq-question i {
            color: var(--accent);
            font-size: 1.1rem;
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-answer {
            margin-top: 14px;
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.7;
            display: none;
            border-top: 1px solid var(--border-color);
            padding-top: 14px;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--accent2);
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(135deg, rgba(13, 27, 42, 0.95) 0%, rgba(17, 24, 39, 0.9) 100%);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 60px 48px;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 70% 50%, rgba(0, 255, 136, 0.04) 0%, transparent 70%);
            z-index: 0;
        }
        .cta-section .cta-content {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: var(--text-muted);
            font-size: 1rem;
            max-width: 520px;
            margin-bottom: 28px;
        }
        .cta-section .btn-custom {
            font-size: 1.05rem;
            padding: 16px 40px;
        }

        @media (max-width: 768px) {
            .cta-section {
                padding: 36px 24px;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
        }

        /* ========== 页脚 ========== */
        .footer {
            background: var(--primary);
            border-top: 1px solid var(--border-color);
            padding: 60px 40px 30px;
            margin-top: 60px;
        }
        .footer .footer-brand {
            font-size: 1.2rem;
            font-weight: 800;
            background: var(--accent-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 12px;
        }
        .footer .footer-desc {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 360px;
        }
        .footer .footer-social {
            display: flex;
            gap: 14px;
            margin-top: 18px;
        }
        .footer .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .footer .footer-social a:hover {
            background: rgba(0, 255, 136, 0.08);
            color: var(--accent);
            border-color: rgba(0, 255, 136, 0.15);
            transform: translateY(-3px);
        }
        .footer .footer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer .footer-links a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer .footer-bottom {
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px solid var(--border-color);
            text-align: center;
            font-size: 0.85rem;
            color: var(--text-weak);
        }
        .footer .footer-bottom a {
            color: var(--text-muted);
        }
        .footer .footer-bottom a:hover {
            color: var(--accent);
        }

        @media (max-width: 768px) {
            .footer {
                padding: 40px 16px 24px;
            }
            .footer .footer-desc {
                max-width: 100%;
            }
        }

        /* ========== 通用板块间距 ========== */
        .section-padding {
            padding: 70px 40px;
        }
        @media (max-width: 768px) {
            .section-padding {
                padding: 44px 16px;
            }
        }

        /* ========== 响应式断点 ========== */
        @media (max-width: 1024px) {
            :root {
                --sidebar-width: 220px;
            }
            .sidebar {
                padding: 24px 16px;
            }
            .sidebar-nav a {
                font-size: 0.88rem;
                padding: 11px 14px;
            }
            .sidebar-brand {
                font-size: 1.1rem;
            }
            .category-hero h1 {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            .sidebar {
                display: none;
            }
            .main-content {
                margin-left: 0;
                padding-top: 68px;
            }
            .mobile-header {
                display: flex;
            }
            .section-padding {
                padding: 36px 16px;
            }
            .category-hero {
                padding: 48px 16px 40px;
                min-height: auto;
            }
            .category-hero h1 {
                font-size: 1.6rem;
            }
            .category-hero .hero-stats {
                gap: 16px;
            }
            .category-hero .hero-stats .stat-num {
                font-size: 1.2rem;
            }
            .step-item {
                flex-direction: column;
                gap: 14px;
                padding: 18px;
            }
            .step-number {
                width: 40px;
                height: 40px;
                font-size: 1rem;
            }
            .footer .footer-social {
                justify-content: center;
            }
            .footer .footer-links {
                align-items: center;
            }
            .footer .footer-desc {
                text-align: center;
                max-width: 100%;
            }
            .footer .footer-brand {
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .category-hero h1 {
                font-size: 1.3rem;
            }
            .category-hero .hero-tag {
                font-size: 0.7rem;
            }
            .section-title {
                font-size: 1.25rem;
            }
            .card-modern .card-body {
                padding: 16px;
            }
            .card-modern .card-title {
                font-size: 1rem;
            }
            .btn-custom {
                padding: 12px 24px;
                font-size: 0.85rem;
            }
            .cta-section {
                padding: 28px 16px;
            }
            .cta-section h2 {
                font-size: 1.25rem;
            }
            .faq-item {
                padding: 16px;
            }
            .faq-question {
                font-size: 0.9rem;
            }
        }

        /* ========== 辅助 ========== */
        .text-accent {
            color: var(--accent);
        }
        .text-accent2 {
            color: var(--accent2);
        }
        .bg-card-custom {
            background: var(--bg-card);
        }
        .border-glow {
            border-color: rgba(0, 255, 136, 0.12);
        }
        .gap-section {
            height: 1px;
            background: var(--border-color);
            margin: 0 40px;
            opacity: 0.4;
        }
        @media (max-width: 768px) {
            .gap-section {
                margin: 0 16px;
            }
        }

        /* 列表样式 */
        .list-check {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .list-check li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 0.95rem;
            color: var(--text-muted);
        }
        .list-check li i {
            color: var(--accent);
            margin-top: 4px;
            flex-shrink: 0;
        }

        /* 动画 */
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .animate-in {
            animation: fadeUp 0.6s ease forwards;
        }
        .animate-delay-1 {
            animation-delay: 0.1s;
        }
        .animate-delay-2 {
            animation-delay: 0.2s;
        }
        .animate-delay-3 {
            animation-delay: 0.3s;
        }
        .animate-delay-4 {
            animation-delay: 0.4s;
        }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #6c2bd0;
            --primary-dark: #521cab;
            --primary-light: #8e4ee8;
            --primary-gradient: linear-gradient(135deg, #6c2bd0 0%, #b44aff 100%);
            --secondary: #ff6b35;
            --secondary-light: #ff8a5c;
            --accent: #00d4aa;
            --bg-dark: #0d0b1a;
            --bg-card: #15122a;
            --bg-card-hover: #1d1938;
            --bg-section: #100d22;
            --bg-light: #f8f6ff;
            --text-light: #ffffff;
            --text-muted: #b8b0d4;
            --text-dim: #7a72a0;
            --border-color: #2d2850;
            --border-light: #3d3570;
            --shadow: 0 8px 32px rgba(0,0,0,0.5);
            --shadow-card: 0 4px 24px rgba(108,43,208,0.15);
            --shadow-hover: 0 12px 40px rgba(108,43,208,0.3);
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --sidebar-width: 240px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            background: var(--bg-dark);
            color: var(--text-light);
            line-height: 1.7;
            overflow-x: hidden;
            display: flex;
            min-height: 100vh;
        }
        a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--secondary); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        .row { --bs-gutter-x: 24px; }

        /* ===== 左侧竖向导航 ===== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            width: var(--sidebar-width);
            background: var(--bg-card);
            border-right: 1px solid var(--border-color);
            z-index: 1050;
            display: flex;
            flex-direction: column;
            padding: 28px 0 20px;
            transition: var(--transition);
            backdrop-filter: blur(12px);
        }
        .sidebar-brand {
            font-size: 1.2rem;
            font-weight: 800;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            padding: 0 24px 24px;
            border-bottom: 1px solid var(--border-color);
            margin-bottom: 20px;
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .sidebar-brand i { font-size: 1.4rem; -webkit-text-fill-color: var(--primary-light); }
        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 4px;
            padding: 0 12px;
            flex: 1;
            overflow-y: auto;
        }
        .sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            color: var(--text-muted);
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
            position: relative;
        }
        .sidebar-nav a i { width: 20px; text-align: center; font-size: 1.05rem; }
        .sidebar-nav a:hover {
            background: rgba(108,43,208,0.12);
            color: var(--text-light);
        }
        .sidebar-nav a.active {
            background: var(--primary-gradient);
            color: #fff;
            box-shadow: 0 4px 16px rgba(108,43,208,0.35);
        }
        .sidebar-nav a.active::after {
            content: '';
            position: absolute;
            right: -12px;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 28px;
            background: var(--secondary);
            border-radius: 4px 0 0 4px;
        }
        .sidebar-footer {
            padding: 16px 24px 0;
            border-top: 1px solid var(--border-color);
            margin-top: 8px;
        }
        .sidebar-footer .social-mini {
            display: flex;
            gap: 12px;
        }
        .sidebar-footer .social-mini a {
            color: var(--text-dim);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .sidebar-footer .social-mini a:hover { color: var(--primary-light); transform: scale(1.15); }

        /* ===== 主内容区 ===== */
        .main-wrapper {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* ===== 顶部移动端导航 ===== */
        .topbar {
            display: none;
            background: var(--bg-card);
            border-bottom: 1px solid var(--border-color);
            padding: 12px 24px;
            align-items: center;
            justify-content: space-between;
            position: sticky;
            top: 0;
            z-index: 1040;
            backdrop-filter: blur(12px);
        }
        .topbar-brand {
            font-size: 1.1rem;
            font-weight: 800;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .topbar-toggle {
            background: none;
            border: none;
            color: var(--text-light);
            font-size: 1.5rem;
            padding: 4px 8px;
            cursor: pointer;
        }
        .mobile-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,0.7);
            z-index: 1045;
            backdrop-filter: blur(4px);
        }
        .mobile-overlay.show { display: block; }

        /* ===== Banner / Hero 内页 ===== */
        .page-banner {
            position: relative;
            padding: 80px 0 60px;
            background: var(--bg-section);
            overflow: hidden;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.2;
            z-index: 0;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13,11,26,0.85) 0%, rgba(108,43,208,0.4) 100%);
            z-index: 1;
        }
        .page-banner .container { position: relative; z-index: 2; }
        .page-banner h1 {
            font-size: 2.8rem;
            font-weight: 800;
            margin-bottom: 16px;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .page-banner .breadcrumb-custom {
            display: flex;
            gap: 10px;
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-bottom: 12px;
        }
        .page-banner .breadcrumb-custom a { color: var(--text-muted); }
        .page-banner .breadcrumb-custom a:hover { color: var(--primary-light); }
        .page-banner .breadcrumb-custom span { color: var(--text-light); }
        .page-banner p {
            font-size: 1.15rem;
            color: var(--text-muted);
            max-width: 680px;
            line-height: 1.8;
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 70px 0;
        }
        .section-dark { background: var(--bg-section); }
        .section-card { background: var(--bg-card); }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-light);
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 600px;
            margin-bottom: 40px;
        }
        .text-center .section-subtitle { margin-left: auto; margin-right: auto; }
        .divider {
            width: 60px;
            height: 4px;
            background: var(--primary-gradient);
            border-radius: 4px;
            margin-bottom: 24px;
        }
        .text-center .divider { margin-left: auto; margin-right: auto; }

        /* ===== 卡片 ===== */
        .card-custom {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 28px 24px;
            transition: var(--transition);
            height: 100%;
        }
        .card-custom:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-light);
            box-shadow: var(--shadow-card);
            transform: translateY(-4px);
        }
        .card-custom .icon-box {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            background: rgba(108,43,208,0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--primary-light);
            margin-bottom: 18px;
        }
        .card-custom h5 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .card-custom p {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-bottom: 0;
            line-height: 1.7;
        }
        .card-custom .badge-step {
            background: var(--primary-gradient);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 20px;
            display: inline-block;
            margin-bottom: 12px;
        }
        .card-custom .tag {
            display: inline-block;
            background: rgba(0,212,170,0.12);
            color: var(--accent);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 20px;
            margin-right: 6px;
            margin-bottom: 6px;
        }

        /* ===== 步骤流程 ===== */
        .step-flow {
            display: flex;
            flex-wrap: wrap;
            gap: 30px;
            justify-content: center;
            counter-reset: step;
        }
        .step-item {
            flex: 1 1 180px;
            max-width: 220px;
            text-align: center;
            position: relative;
        }
        .step-item::before {
            counter-increment: step;
            content: counter(step);
            display: flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary-gradient);
            font-size: 1.2rem;
            font-weight: 800;
            color: #fff;
            margin: 0 auto 16px;
            box-shadow: 0 4px 20px rgba(108,43,208,0.3);
        }
        .step-item h6 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .step-item p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }
        .step-item:not(:last-child)::after {
            content: '\f054';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            right: -20px;
            top: 12px;
            color: var(--primary-light);
            opacity: 0.5;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .step-item:not(:last-child)::after { display: none; }
            .step-item { flex: 1 1 140px; max-width: 160px; }
        }

        /* ===== FAQ ===== */
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--border-light); }
        .faq-question {
            padding: 18px 22px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--text-light);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }
        .faq-question i { transition: var(--transition); color: var(--primary-light); }
        .faq-question[aria-expanded="true"] i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 22px 18px;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-block {
            background: var(--primary-gradient);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }
        .cta-block * { position: relative; z-index: 1; }
        .cta-block h3 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .cta-block p {
            font-size: 1.1rem;
            opacity: 0.9;
            margin-bottom: 28px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .btn-cta {
            background: #fff;
            color: var(--primary-dark);
            border: none;
            padding: 14px 40px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.05rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .btn-cta:hover {
            background: var(--secondary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(255,107,53,0.3);
        }

        /* ===== 按钮 ===== */
        .btn-primary-custom {
            background: var(--primary-gradient);
            border: none;
            color: #fff;
            padding: 12px 32px;
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-primary-custom:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(108,43,208,0.35);
            color: #fff;
        }
        .btn-outline-custom {
            background: transparent;
            border: 2px solid var(--border-light);
            color: var(--text-light);
            padding: 10px 28px;
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-outline-custom:hover {
            border-color: var(--primary-light);
            color: var(--primary-light);
            transform: translateY(-2px);
        }

        /* ===== 统计数字 ===== */
        .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }
        .stat-label {
            font-size: 0.95rem;
            color: var(--text-muted);
        }

        /* ===== 标签云 ===== */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .tag-cloud a {
            display: inline-block;
            padding: 8px 20px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 50px;
            color: var(--text-muted);
            font-size: 0.9rem;
            font-weight: 500;
            transition: var(--transition);
        }
        .tag-cloud a:hover {
            background: var(--primary-gradient);
            border-color: transparent;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 4px 20px rgba(108,43,208,0.3);
        }

        /* ===== 内容列表 ===== */
        .list-item {
            display: flex;
            gap: 18px;
            padding: 18px 0;
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .list-item:last-child { border-bottom: none; }
        .list-item:hover { padding-left: 8px; }
        .list-item .list-icon {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: rgba(108,43,208,0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-light);
            font-size: 1rem;
        }
        .list-item h6 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 4px;
        }
        .list-item p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ===== 嵌入封面图 ===== */
        .cover-wrap {
            border-radius: var(--radius-sm);
            overflow: hidden;
            position: relative;
        }
        .cover-wrap img {
            width: 100%;
            height: 220px;
            object-fit: cover;
            transition: var(--transition);
        }
        .cover-wrap:hover img { transform: scale(1.03); }
        .cover-wrap .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(13,11,26,0.7) 0%, transparent 60%);
            pointer-events: none;
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--bg-card);
            border-top: 1px solid var(--border-color);
            padding: 48px 0 24px;
            margin-top: auto;
        }
        .footer-brand {
            font-size: 1.25rem;
            font-weight: 800;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 12px;
        }
        .footer-desc {
            color: var(--text-muted);
            font-size: 0.92rem;
            max-width: 340px;
            line-height: 1.8;
        }
        .footer-social {
            display: flex;
            gap: 14px;
            margin-top: 18px;
        }
        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(108,43,208,0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary-gradient);
            color: #fff;
            transform: translateY(-3px);
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .footer-links a {
            color: var(--text-muted);
            font-size: 0.92rem;
            transition: var(--transition);
        }
        .footer-links a:hover { color: var(--primary-light); padding-left: 4px; }
        .footer-bottom {
            margin-top: 32px;
            padding-top: 20px;
            border-top: 1px solid var(--border-color);
            text-align: center;
            color: var(--text-dim);
            font-size: 0.88rem;
        }
        .footer-bottom a { color: var(--text-dim); }
        .footer-bottom a:hover { color: var(--primary-light); }

        /* ===== 响应式 ===== */
        @media (max-width: 992px) {
            .sidebar { transform: translateX(-100%); }
            .sidebar.open { transform: translateX(0); }
            .main-wrapper { margin-left: 0; }
            .topbar { display: flex; }
            .mobile-overlay.show { display: block; }
            .page-banner h1 { font-size: 2rem; }
            .page-banner { padding: 60px 0 40px; }
            .section { padding: 50px 0; }
            .cta-block { padding: 40px 28px; }
            .cta-block h3 { font-size: 1.6rem; }
        }
        @media (max-width: 768px) {
            .page-banner h1 { font-size: 1.65rem; }
            .section-title { font-size: 1.5rem; }
            .stat-number { font-size: 2rem; }
            .card-custom { padding: 20px 18px; }
            .step-item { flex: 1 1 120px; max-width: 140px; }
            .footer .row > div { margin-bottom: 24px; }
            .footer-links { flex-direction: row; flex-wrap: wrap; gap: 12px; }
        }
        @media (max-width: 520px) {
            .page-banner h1 { font-size: 1.35rem; }
            .page-banner p { font-size: 0.95rem; }
            .section-title { font-size: 1.3rem; }
            .section-subtitle { font-size: 0.95rem; }
            .btn-cta { padding: 12px 28px; font-size: 0.95rem; }
            .cta-block h3 { font-size: 1.3rem; }
            .tag-cloud a { font-size: 0.82rem; padding: 6px 16px; }
        }

/* roulang page: category3 */
/* ===== CSS Variables / Design System ===== */
        :root {
            --primary: #7c3aed;
            --primary-dark: #5b21b6;
            --primary-light: #a78bfa;
            --primary-glow: rgba(124, 58, 237, 0.45);
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --accent-glow: rgba(245, 158, 11, 0.4);
            --bg-dark: #0f0e17;
            --bg-card: #1a1932;
            --bg-card-hover: #232146;
            --bg-sidebar: #0b0a16;
            --text-light: #f1f5f9;
            --text-muted: #a1a1aa;
            --text-dim: #6b7280;
            --border-color: #2d2b55;
            --border-glow: rgba(124, 58, 237, 0.25);
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(124, 58, 237, 0.08);
            --shadow-glow: 0 0 40px rgba(124, 58, 237, 0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --sidebar-width: 260px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg-dark);
            color: var(--text-light);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            display: flex;
        }

        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }

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

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

        /* ===== Layout: Sidebar + Main ===== */
        .app-wrapper {
            display: flex;
            width: 100%;
            min-height: 100vh;
        }

        /* --- Sidebar --- */
        .sidebar {
            width: var(--sidebar-width);
            background: var(--bg-sidebar);
            border-right: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            z-index: 1050;
            padding: 28px 20px 20px;
            transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            box-shadow: 4px 0 30px rgba(0, 0, 0, 0.5);
        }

        .sidebar-brand {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-light);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 12px;
            padding-bottom: 28px;
            border-bottom: 1px solid var(--border-color);
            margin-bottom: 20px;
        }
        .sidebar-brand i {
            font-size: 1.6rem;
            color: var(--primary-light);
            filter: drop-shadow(0 0 8px var(--primary-glow));
        }

        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 6px;
            flex: 1;
            overflow-y: auto;
        }
        .sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition);
            position: relative;
        }
        .sidebar-nav a i {
            width: 22px;
            text-align: center;
            font-size: 1.15rem;
            color: var(--text-dim);
            transition: var(--transition);
        }
        .sidebar-nav a:hover {
            background: rgba(124, 58, 237, 0.1);
            color: var(--text-light);
        }
        .sidebar-nav a:hover i {
            color: var(--primary-light);
        }
        .sidebar-nav a.active {
            background: linear-gradient(135deg, rgba(124, 58, 237, 0.2), rgba(91, 33, 182, 0.1));
            color: var(--text-light);
            border: 1px solid var(--border-glow);
            box-shadow: 0 0 20px rgba(124, 58, 237, 0.08);
        }
        .sidebar-nav a.active i {
            color: var(--primary-light);
            filter: drop-shadow(0 0 6px var(--primary-glow));
        }
        .sidebar-nav a.active::before {
            content: '';
            position: absolute;
            left: -1px;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 60%;
            background: var(--primary-light);
            border-radius: 0 4px 4px 0;
            box-shadow: 0 0 12px var(--primary-glow);
        }

        .sidebar-footer-mini {
            border-top: 1px solid var(--border-color);
            padding-top: 16px;
            margin-top: 12px;
            font-size: 0.75rem;
            color: var(--text-dim);
            text-align: center;
        }

        /* --- Main Content --- */
        .main-content {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* ===== Mobile Toggle ===== */
        .mobile-toggle {
            display: none;
            position: fixed;
            top: 16px;
            right: 16px;
            z-index: 1060;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            color: var(--text-light);
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            font-size: 1.3rem;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }
        .mobile-toggle:hover {
            background: var(--primary);
            border-color: var(--primary);
        }

        .sidebar-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 1045;
            backdrop-filter: blur(4px);
        }

        /* ===== Hero / Banner ===== */
        .page-hero {
            position: relative;
            padding: 80px 40px 70px;
            background: linear-gradient(135deg, #1a1932 0%, #0f0e17 100%);
            overflow: hidden;
            min-height: 280px;
            display: flex;
            align-items: center;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.25;
            mix-blend-mode: overlay;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(124, 58, 237, 0.15), transparent 70%);
            pointer-events: none;
        }
        .page-hero .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
        }
        .page-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(124, 58, 237, 0.2);
            border: 1px solid var(--border-glow);
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--primary-light);
            letter-spacing: 0.5px;
            margin-bottom: 18px;
        }
        .page-hero .hero-badge i {
            font-size: 0.9rem;
        }
        .page-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.03em;
            color: var(--text-light);
            text-shadow: 0 2px 30px rgba(0, 0, 0, 0.4);
            margin-bottom: 16px;
        }
        .page-hero h1 span {
            color: var(--primary-light);
            text-shadow: 0 0 30px var(--primary-glow);
        }
        .page-hero p {
            font-size: 1.15rem;
            color: var(--text-muted);
            max-width: 640px;
            line-height: 1.8;
        }

        /* ===== Section Common ===== */
        .section-block {
            padding: 72px 40px;
        }
        .section-block .container {
            max-width: 1200px;
            margin: 0 auto;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
            color: var(--text-light);
        }
        .section-sub {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 640px;
            margin-bottom: 40px;
            line-height: 1.7;
        }
        .section-sub.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }
        .section-title.center {
            text-align: center;
        }

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

        /* ===== Cards ===== */
        .card-community {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 28px 24px;
            transition: var(--transition);
            box-shadow: var(--shadow-card);
            height: 100%;
            position: relative;
            overflow: hidden;
        }
        .card-community::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: var(--transition);
        }
        .card-community:hover {
            background: var(--bg-card-hover);
            transform: translateY(-6px);
            box-shadow: 0 16px 48px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(124, 58, 237, 0.15);
            border-color: var(--border-glow);
        }
        .card-community:hover::before {
            opacity: 1;
        }
        .card-community .card-icon {
            font-size: 2.2rem;
            color: var(--primary-light);
            margin-bottom: 16px;
            filter: drop-shadow(0 0 12px var(--primary-glow));
        }
        .card-community h5 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-light);
        }
        .card-community p {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .card-community .card-tag {
            display: inline-block;
            background: rgba(124, 58, 237, 0.15);
            border: 1px solid rgba(124, 58, 237, 0.2);
            padding: 3px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--primary-light);
        }
        .card-community .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--text-dim);
            margin-top: 12px;
        }
        .card-community .card-meta i {
            margin-right: 4px;
            color: var(--primary-light);
        }

        /* ===== Activity Feed ===== */
        .activity-item {
            display: flex;
            gap: 18px;
            padding: 20px 0;
            border-bottom: 1px solid rgba(45, 43, 85, 0.4);
            transition: var(--transition);
        }
        .activity-item:last-child {
            border-bottom: none;
        }
        .activity-item:hover {
            padding-left: 8px;
        }
        .activity-avatar {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: #fff;
            flex-shrink: 0;
            box-shadow: 0 0 20px rgba(124, 58, 237, 0.2);
        }
        .activity-avatar img {
            width: 100%;
            height: 100%;
            border-radius: 50%;
            object-fit: cover;
        }
        .activity-body h6 {
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 4px;
            color: var(--text-light);
        }
        .activity-body h6 span {
            color: var(--text-dim);
            font-weight: 400;
            font-size: 0.8rem;
        }
        .activity-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 6px;
            line-height: 1.6;
        }
        .activity-body .activity-time {
            font-size: 0.75rem;
            color: var(--text-dim);
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .activity-body .activity-time i {
            color: var(--primary-light);
        }
        .activity-body .activity-badge {
            display: inline-block;
            background: rgba(245, 158, 11, 0.15);
            border: 1px solid rgba(245, 158, 11, 0.25);
            padding: 1px 12px;
            border-radius: 50px;
            font-size: 0.7rem;
            font-weight: 600;
            color: var(--accent);
            margin-left: 6px;
        }

        /* ===== Stats / Numbers ===== */
        .stat-block {
            text-align: center;
            padding: 32px 20px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            transition: var(--transition);
            box-shadow: var(--shadow-card);
        }
        .stat-block:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-glow);
            transform: scale(1.02);
        }
        .stat-block .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }
        .stat-block .stat-label {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-top: 6px;
        }
        .stat-block .stat-icon {
            font-size: 1.8rem;
            color: var(--primary-light);
            margin-bottom: 12px;
            filter: drop-shadow(0 0 10px var(--primary-glow));
        }

        /* ===== FAQ ===== */
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            padding: 20px 24px;
            margin-bottom: 12px;
            transition: var(--transition);
            cursor: pointer;
        }
        .faq-item:hover {
            border-color: var(--border-glow);
            background: var(--bg-card-hover);
        }
        .faq-item .faq-q {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-light);
        }
        .faq-item .faq-q i {
            color: var(--primary-light);
            transition: var(--transition);
        }
        .faq-item.open .faq-q i {
            transform: rotate(180deg);
        }
        .faq-item .faq-a {
            margin-top: 12px;
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-a {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(135deg, #1a1932, #0f0e17);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 52px 48px;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 70% 30%, rgba(124, 58, 237, 0.12), transparent 60%);
            pointer-events: none;
        }
        .cta-block h3 {
            font-size: 1.8rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
            position: relative;
            z-index: 2;
        }
        .cta-block p {
            color: var(--text-muted);
            font-size: 1.05rem;
            max-width: 560px;
            margin-bottom: 24px;
            position: relative;
            z-index: 2;
        }
        .cta-block .btn-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border: none;
            color: #fff;
            padding: 14px 38px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            transition: var(--transition);
            box-shadow: 0 0 30px var(--primary-glow);
            position: relative;
            z-index: 2;
        }
        .cta-block .btn-cta:hover {
            transform: translateY(-3px) scale(1.02);
            box-shadow: 0 0 50px var(--primary-glow);
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
        }
        .cta-block .btn-cta i {
            margin-left: 8px;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-sidebar);
            border-top: 1px solid var(--border-color);
            padding: 56px 40px 30px;
            margin-top: auto;
        }
        .footer .footer-brand {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-light);
            margin-bottom: 12px;
        }
        .footer .footer-desc {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 360px;
        }
        .footer .footer-social {
            display: flex;
            gap: 16px;
            margin-top: 18px;
        }
        .footer .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(124, 58, 237, 0.1);
            border: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .footer .footer-social a:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            transform: translateY(-3px);
            box-shadow: 0 0 20px var(--primary-glow);
        }
        .footer .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer .footer-links a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer .footer-links a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer .footer-bottom {
            border-top: 1px solid var(--border-color);
            margin-top: 32px;
            padding-top: 20px;
            text-align: center;
            font-size: 0.82rem;
            color: var(--text-dim);
        }
        .footer .footer-bottom a {
            color: var(--text-dim);
        }
        .footer .footer-bottom a:hover {
            color: var(--primary-light);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .page-hero h1 {
                font-size: 2.2rem;
            }
            .section-block {
                padding: 52px 28px;
            }
            .footer {
                padding: 40px 28px 24px;
            }
        }

        @media (max-width: 768px) {
            .sidebar {
                transform: translateX(-100%);
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .sidebar-overlay.show {
                display: block;
            }
            .mobile-toggle {
                display: flex;
            }
            .main-content {
                margin-left: 0;
            }
            .page-hero {
                padding: 60px 24px 50px;
                min-height: 220px;
            }
            .page-hero h1 {
                font-size: 1.8rem;
            }
            .page-hero p {
                font-size: 1rem;
            }
            .section-block {
                padding: 40px 20px;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .cta-block {
                padding: 36px 24px;
            }
            .cta-block h3 {
                font-size: 1.4rem;
            }
            .stat-block .stat-number {
                font-size: 2.2rem;
            }
            .footer {
                padding: 32px 20px 20px;
            }
            .footer .footer-desc {
                max-width: 100%;
            }
            .activity-item {
                flex-direction: column;
                gap: 12px;
            }
        }

        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 1.4rem;
            }
            .page-hero {
                padding: 44px 16px 36px;
            }
            .section-block {
                padding: 28px 14px;
            }
            .section-title {
                font-size: 1.25rem;
            }
            .card-community {
                padding: 20px 16px;
            }
            .cta-block {
                padding: 28px 16px;
                border-radius: var(--radius);
            }
            .cta-block h3 {
                font-size: 1.15rem;
            }
            .cta-block .btn-cta {
                padding: 12px 28px;
                font-size: 0.9rem;
            }
            .stat-block .stat-number {
                font-size: 1.8rem;
            }
            .footer {
                padding: 24px 14px 16px;
            }
            .footer .footer-social a {
                width: 34px;
                height: 34px;
                font-size: 0.95rem;
            }
            .faq-item {
                padding: 16px 16px;
            }
        }

        /* ===== Utility ===== */
        .mb-0 {
            margin-bottom: 0 !important;
        }
        .me-2 {
            margin-right: 8px !important;
        }
        .ms-2 {
            margin-left: 8px !important;
        }
        .gap-2 {
            gap: 8px;
        }
        .gap-3 {
            gap: 16px;
        }
        .gap-4 {
            gap: 24px;
        }
        .fw-700 {
            font-weight: 700;
        }
        .text-center {
            text-align: center;
        }
        .mt-3 {
            margin-top: 16px;
        }
        .mt-4 {
            margin-top: 24px;
        }
        .mb-4 {
            margin-bottom: 24px;
        }
        .position-relative {
            position: relative;
        }
        .overflow-hidden {
            overflow: hidden;
        }