/* roulang page: index */
:root {
            --bg-primary: #050814;
            --bg-panel: rgba(255, 255, 255, 0.04);
            --bg-glass: linear-gradient(135deg, rgba(255, 255, 255, 0.10), rgba(255, 255, 255, 0.02));
            --border-glass: rgba(255, 255, 255, 0.10);
            --accent-cyan: #00E5FF;
            --accent-gold: #D4A94E;
            --text-primary: #EDF2FF;
            --text-secondary: #A8B3D4;
            --text-muted: #5E6B8C;
            --gradient-main: linear-gradient(135deg, #00E5FF, #2B7FFF);
            --shadow-primary: 0 18px 40px rgba(0, 0, 0, 0.30);
            --shadow-hover: 0 24px 60px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(0, 229, 255, 0.10);
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-sm: 10px;
            --sidebar-width: 240px;
            --sidebar-width-sm: 220px;
            --section-gap: 80px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.75;
            overflow-x: hidden;
        }

        body::before {
            content: '';
            position: fixed;
            inset: 0;
            background-image: radial-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px);
            background-size: 26px 26px;
            pointer-events: none;
            z-index: 0;
        }

        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color 0.2s ease;
        }

        a:hover {
            color: #4df0ff;
        }

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

        .app-sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: rgba(10, 15, 32, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-right: 1px solid rgba(255, 255, 255, 0.06);
            z-index: 1040;
            display: flex;
            flex-direction: column;
            padding: 28px 16px 20px;
        }

        .sidebar-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 0 12px 24px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            margin-bottom: 20px;
        }

        .sidebar-logo i {
            font-size: 28px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-gold));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .sidebar-logo span {
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 0.02em;
            color: var(--text-primary);
            line-height: 1.3;
        }

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

        .sidebar-nav .nav-item {
            display: flex;
            align-items: center;
            gap: 14px;
            height: 48px;
            padding: 0 16px;
            border-radius: 10px;
            color: var(--text-secondary);
            font-size: 15px;
            font-weight: 500;
            transition: all 0.2s ease;
            position: relative;
        }

        .sidebar-nav .nav-item i {
            width: 20px;
            text-align: center;
            font-size: 16px;
        }

        .sidebar-nav .nav-item:hover {
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-primary);
        }

        .sidebar-nav .nav-item.active {
            background: rgba(0, 229, 255, 0.06);
            color: var(--accent-cyan);
            font-weight: 600;
        }

        .sidebar-nav .nav-item.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 20px;
            border-radius: 0 3px 3px 0;
            background: var(--accent-cyan);
            box-shadow: 0 0 8px rgba(0, 229, 255, 0.6);
        }

        .sidebar-auth {
            display: flex;
            align-items: center;
            gap: 10px;
            height: 44px;
            padding: 0 14px;
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
            border: 1px solid rgba(212, 169, 78, 0.25);
            border-radius: 22px;
            font-size: 13px;
            color: var(--accent-gold);
            font-weight: 600;
        }

        .sidebar-auth i {
            font-size: 14px;
        }

        .mobile-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 64px;
            background: rgba(5, 8, 20, 0.85);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
            z-index: 1040;
        }

        .mobile-header .btn-mobile-nav {
            background: transparent;
            border: none;
            color: var(--text-primary);
            font-size: 20px;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .mobile-header .btn-mobile-nav:hover {
            background: rgba(255, 255, 255, 0.06);
        }

        .mobile-header .mobile-logo {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.02em;
        }

        .mobile-drawer {
            background-color: #0A0F20;
            color: var(--text-primary);
            width: 280px;
        }

        .mobile-drawer .offcanvas-header {
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            padding: 20px 20px 16px;
        }

        .mobile-drawer .drawer-logo {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .mobile-drawer .drawer-logo i {
            color: var(--accent-cyan);
            font-size: 22px;
        }

        .mobile-drawer .btn-close {
            filter: invert(1) grayscale(1);
            opacity: 0.7;
        }

        .mobile-drawer .offcanvas-body {
            padding: 16px;
        }

        .drawer-link {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 14px 16px;
            border-radius: 10px;
            color: var(--text-secondary);
            font-size: 15px;
            font-weight: 500;
            transition: all 0.2s ease;
            margin-bottom: 4px;
        }

        .drawer-link i {
            width: 20px;
            text-align: center;
        }

        .drawer-link:hover {
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-primary);
        }

        .drawer-link.active {
            background: rgba(0, 229, 255, 0.06);
            color: var(--accent-cyan);
            font-weight: 600;
        }

        .app-main {
            margin-left: var(--sidebar-width);
            min-height: 100vh;
            padding-bottom: 60px;
            position: relative;
            z-index: 1;
        }

        .page-container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 32px;
        }

        .section-block {
            padding: var(--section-gap) 0;
        }

        .hero-section {
            position: relative;
            min-height: 80vh;
            display: flex;
            align-items: center;
            padding: calc(var(--section-gap) + 30px) 0 var(--section-gap);
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(5, 8, 20, 0.88), rgba(5, 8, 20, 0.68));
            z-index: 1;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            width: 480px;
            height: 480px;
            background: rgba(0, 229, 255, 0.15);
            border-radius: 50%;
            filter: blur(120px);
            top: 15%;
            right: 8%;
            z-index: 1;
            pointer-events: none;
        }

        .hero-container {
            position: relative;
            z-index: 2;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 32px;
            width: 100%;
        }

        .hero-glass-panel {
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.10), rgba(255, 255, 255, 0.02));
            border: 1px solid rgba(255, 255, 255, 0.10);
            backdrop-filter: blur(18px) saturate(150%);
            -webkit-backdrop-filter: blur(18px) saturate(150%);
            border-radius: var(--radius-lg);
            padding: 64px 56px;
            max-width: 760px;
            box-shadow: var(--shadow-primary);
        }

        .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 24px;
        }

        .badge-gold {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 600;
            color: var(--accent-gold);
            background: rgba(212, 169, 78, 0.08);
            border: 1px solid rgba(212, 169, 78, 0.35);
            border-radius: 999px;
            padding: 6px 14px;
            letter-spacing: 0.02em;
        }

        .badge-cyan {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 600;
            color: var(--accent-cyan);
            background: rgba(0, 229, 255, 0.06);
            border: 1px solid rgba(0, 229, 255, 0.30);
            border-radius: 999px;
            padding: 6px 14px;
            letter-spacing: 0.02em;
        }

        .hero-title {
            font-size: 46px;
            font-weight: 700;
            letter-spacing: 0.02em;
            color: var(--text-primary);
            line-height: 1.2;
            margin-bottom: 20px;
        }

        .hero-subtitle {
            font-size: 17px;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 32px;
            max-width: 600px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        .btn-cyber {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 30px;
            background: var(--gradient-main);
            color: #050814;
            font-weight: 700;
            font-size: 16px;
            border: none;
            border-radius: var(--radius-sm);
            box-shadow: 0 0 24px rgba(0, 229, 255, 0.35);
            transition: all 0.25s ease;
            text-decoration: none;
            cursor: pointer;
        }

        .btn-cyber:hover {
            transform: translateY(-1px);
            box-shadow: 0 0 34px rgba(0, 229, 255, 0.55);
            color: #050814;
        }

        .btn-cyber:active {
            transform: scale(0.98);
        }

        .btn-cyber .fa-arrow-right {
            margin-left: 8px;
            font-size: 14px;
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 30px;
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-primary);
            font-weight: 500;
            font-size: 16px;
            border: 1px solid rgba(255, 255, 255, 0.20);
            border-radius: var(--radius-sm);
            transition: all 0.25s ease;
            text-decoration: none;
            cursor: pointer;
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-primary);
            border-color: rgba(255, 255, 255, 0.30);
        }

        .btn-ghost:active {
            transform: scale(0.98);
        }

        .section-title {
            font-size: 32px;
            font-weight: 700;
            letter-spacing: 0.02em;
            color: var(--text-primary);
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 48px;
            max-width: 640px;
        }

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

        .section-head .section-title {
            margin-bottom: 8px;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .feature-card {
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            transition: all 0.3s ease;
        }

        .feature-card:hover {
            border-color: rgba(0, 229, 255, 0.30);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: rgba(0, 229, 255, 0.10);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--accent-cyan);
            margin-bottom: 20px;
            transition: box-shadow 0.3s ease;
        }

        .feature-card:hover .feature-icon {
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.30);
        }

        .feature-card h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        .feature-card p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .feature-card .feature-link {
            font-size: 14px;
            font-weight: 500;
        }

        .steps-section {
            position: relative;
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 40px;
            position: relative;
        }

        .steps-grid::before {
            content: '';
            position: absolute;
            top: 60px;
            left: 15%;
            right: 15%;
            height: 1px;
            background: repeating-linear-gradient(90deg, rgba(0, 229, 255, 0.30) 0 8px, transparent 8px 16px);
        }

        .step-item {
            text-align: center;
            padding: 0 10px;
            position: relative;
            z-index: 1;
        }

        .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: rgba(5, 8, 20, 0.9);
            border: 2px solid rgba(212, 169, 78, 0.6);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            color: var(--accent-gold);
            margin: 0 auto 20px;
            box-shadow: 0 0 16px rgba(212, 169, 78, 0.15);
        }

        .step-title {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        .step-desc {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .step-img {
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-glass);
            margin-bottom: 20px;
        }

        .step-img img {
            width: 100%;
            height: 140px;
            object-fit: cover;
            display: block;
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .news-card {
            display: flex;
            align-items: center;
            gap: 24px;
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 20px;
            transition: all 0.3s ease;
        }

        .news-card:hover {
            border-color: rgba(0, 229, 255, 0.25);
            box-shadow: var(--shadow-hover);
        }

        .news-thumb {
            width: 120px;
            height: 80px;
            flex-shrink: 0;
            border-radius: 10px;
            overflow: hidden;
            background: rgba(0, 229, 255, 0.05);
        }

        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

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

        .news-content h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 6px;
            line-height: 1.4;
        }

        .news-content h3 a {
            color: var(--text-primary);
        }

        .news-content h3 a:hover {
            color: var(--accent-cyan);
        }

        .news-content p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-more {
            font-size: 13px;
            font-weight: 500;
        }

        .news-side {
            display: flex;
            flex-direction: column;
            align-items: flex-end;
            gap: 10px;
            flex-shrink: 0;
        }

        .news-side time {
            font-size: 13px;
            color: var(--text-muted);
            white-space: nowrap;
        }

        .empty-state {
            border: 1px dashed rgba(255, 255, 255, 0.20);
            border-radius: var(--radius-md);
            padding: 60px 30px;
            text-align: center;
            background: rgba(255, 255, 255, 0.02);
        }

        .empty-state i {
            font-size: 36px;
            color: var(--text-muted);
            margin-bottom: 16px;
        }

        .empty-state p {
            color: var(--text-secondary);
            font-size: 15px;
            margin: 0;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-bottom: 48px;
        }

        .stat-item {
            text-align: center;
            padding: 32px 20px;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
        }

        .stat-number {
            font-family: 'Rajdhani', 'DIN Alternate', sans-serif;
            font-size: 44px;
            font-weight: 700;
            background: var(--gradient-main);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1.1;
            margin-bottom: 8px;
        }

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

        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .testimonial-card {
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.01));
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 28px;
            position: relative;
        }

        .testimonial-card .fa-quote-left {
            position: absolute;
            top: 20px;
            right: 24px;
            font-size: 32px;
            color: rgba(212, 169, 78, 0.25);
        }

        .testimonial-text {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 20px;
            font-style: italic;
        }

        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .testimonial-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, #00E5FF, #2B7FFF);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            color: #050814;
            font-weight: 700;
        }

        .testimonial-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
        }

        .testimonial-role {
            font-size: 12px;
            color: var(--text-muted);
        }

        .faq-section {
            background: rgba(255, 255, 255, 0.02);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

        .accordion-item {
            background: var(--bg-panel);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md) !important;
            margin-bottom: 16px;
            overflow: hidden;
        }

        .accordion-button {
            background: transparent;
            color: var(--text-primary);
            font-size: 16px;
            font-weight: 600;
            padding: 20px 24px;
            line-height: 1.5;
            border: none;
        }

        .accordion-button::after {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%2300E5FF'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
            transition: transform 0.2s ease;
        }

        .accordion-button:not(.collapsed) {
            background: rgba(0, 229, 255, 0.04);
            color: var(--accent-cyan);
            box-shadow: none;
        }

        .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.15);
            border-color: rgba(0, 229, 255, 0.5);
            outline: none;
        }

        .accordion-body {
            padding: 0 24px 20px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
        }

        .cta-section {
            text-align: center;
            padding: 80px 0;
        }

        .cta-panel {
            background: linear-gradient(135deg, rgba(0, 229, 255, 0.10), rgba(43, 127, 255, 0.04));
            border: 1px solid rgba(0, 229, 255, 0.20);
            border-radius: var(--radius-lg);
            padding: 56px 40px;
            position: relative;
            overflow: hidden;
        }

        .cta-panel::before {
            content: '';
            position: absolute;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(0, 229, 255, 0.10);
            filter: blur(80px);
            top: -60px;
            right: -60px;
        }

        .cta-title {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            position: relative;
            z-index: 1;
        }

        .cta-desc {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 32px;
            position: relative;
            z-index: 1;
        }

        .cta-panel .btn-cyber {
            position: relative;
            z-index: 1;
        }

        .app-footer {
            background: rgba(3, 5, 12, 0.95);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            margin-left: var(--sidebar-width);
            padding: 48px 0 20px;
        }

        .footer-inner {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 32px;
        }

        .footer-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 24px;
            margin-bottom: 32px;
        }

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

        .footer-logo i {
            color: var(--accent-cyan);
            font-size: 24px;
        }

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

        .footer-links a {
            font-size: 14px;
            color: var(--text-secondary);
        }

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

        .footer-bottom {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            color: var(--text-muted);
            font-size: 13px;
            line-height: 1.8;
        }

        .fixed-cta-bar {
            position: fixed;
            bottom: 0;
            left: var(--sidebar-width);
            right: 0;
            height: 64px;
            background: rgba(5, 8, 20, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-top: 1px solid rgba(0, 229, 255, 0.20);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 32px;
            z-index: 1030;
            transition: transform 0.3s ease;
        }

        .fixed-cta-bar .cta-text {
            font-size: 15px;
            color: var(--text-secondary);
            font-weight: 500;
        }

        .fixed-cta-bar .btn-cyber {
            height: 42px;
            padding: 0 24px;
            font-size: 14px;
        }

        .btn:focus,
        .btn-close:focus {
            box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.15);
            outline: none;
        }

        .img-fallback {
            background: var(--bg-panel);
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 80px;
            position: relative;
        }

        .img-fallback::after {
            content: '\f1c5';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 24px;
            color: var(--accent-cyan);
        }

        @media (max-width: 1199.98px) {
            :root {
                --sidebar-width: 220px;
            }

            .hero-title {
                font-size: 38px;
            }

            .section-title {
                font-size: 28px;
            }

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

        @media (max-width: 991.98px) {
            .app-main {
                margin-left: 0;
            }

            .app-sidebar {
                display: none;
            }

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

            .fixed-cta-bar {
                left: 0;
            }

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

            .steps-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .steps-grid::before {
                display: none;
            }

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

            .hero-section {
                background-attachment: scroll;
                padding-top: calc(var(--section-gap) + 20px);
            }

            .hero-glass-panel {
                padding: 40px 28px;
            }

            .hero-title {
                font-size: 34px;
            }

            .news-card {
                flex-direction: column;
                align-items: flex-start;
                gap: 16px;
            }

            .news-side {
                flex-direction: row;
                align-items: center;
                gap: 16px;
            }

            .page-container {
                padding: 0 20px;
            }

            .hero-container {
                padding: 0 20px;
            }

            .footer-inner {
                padding: 0 20px;
            }
        }

        @media (max-width: 767.98px) {
            .section-block {
                padding: 48px 0;
            }

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

            .stat-number {
                font-size: 32px;
            }

            .cta-panel {
                padding: 36px 24px;
            }

            .cta-title {
                font-size: 24px;
            }

            .fixed-cta-bar .cta-text {
                font-size: 13px;
            }

            .fixed-cta-bar .btn-cyber {
                padding: 0 16px;
                font-size: 13px;
            }

            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .hero-actions .btn-cyber,
            .hero-actions .btn-ghost {
                width: 100%;
            }
        }

        @media (max-width: 575.98px) {
            .hero-title {
                font-size: 28px;
            }

            .hero-subtitle {
                font-size: 15px;
            }

            .news-card {
                padding: 16px;
            }

            .news-thumb {
                width: 100%;
                height: 140px;
            }

            .news-side {
                flex-wrap: wrap;
            }

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

            .footer-links {
                gap: 16px;
            }
        }

/* roulang page: article */
:root {
            --bg-main: #050814;
            --bg-panel: rgba(255, 255, 255, 0.04);
            --glass-bg: linear-gradient(135deg, rgba(255, 255, 255, 0.10), rgba(255, 255, 255, 0.02));
            --glass-border: rgba(255, 255, 255, 0.10);
            --accent: #00E5FF;
            --gold: #D4A94E;
            --text-main: #EDF2FF;
            --text-secondary: #A8B3D4;
            --text-muted: #5E6B8C;
            --gradient-main: linear-gradient(135deg, #00E5FF, #2B7FFF);
            --glow: 0 0 24px rgba(0, 229, 255, 0.35);
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-sm: 10px;
            --shadow-regular: 0 18px 40px rgba(0, 0, 0, 0.30);
            --shadow-hover: 0 24px 60px rgba(0, 0, 0, 0.45);
            --sidebar-w: 240px;
            --sidebar-w-md: 220px;
            --content-max: 1280px;
            --section-space: 80px;
            --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-en: "Rajdhani", "DIN Alternate", "Bahnschrift", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            background-color: var(--bg-main);
            background-image: radial-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px);
            background-size: 24px 24px;
            color: var(--text-main);
            font-family: var(--font-cn);
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            min-height: 100vh;
            overflow-x: hidden;
        }

        a {
            color: var(--accent);
            text-decoration: none;
            transition: color 0.2s ease, opacity 0.2s ease;
        }

        a:hover {
            color: #66efff;
        }

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

        button,
        input {
            font-family: inherit;
        }

        .app-sidebar {
            position: fixed;
            left: 0;
            top: 0;
            width: var(--sidebar-w);
            height: 100vh;
            background: rgba(10, 15, 32, 0.86);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-right: 1px solid rgba(255, 255, 255, 0.06);
            z-index: 1050;
            display: flex;
            flex-direction: column;
            padding: 24px 16px 20px;
        }

        .sidebar-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 8px 12px 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            margin-bottom: 16px;
        }

        .sidebar-brand .brand-icon {
            width: 40px;
            height: 40px;
            flex-shrink: 0;
            border-radius: 12px;
            background: var(--gradient-main);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #050814;
            font-size: 18px;
            box-shadow: var(--glow);
        }

        .sidebar-brand .brand-text {
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 0.02em;
            color: var(--text-main);
            line-height: 1.3;
            white-space: nowrap;
        }

        .sidebar-brand .brand-text span {
            color: var(--gold);
            font-size: 12px;
            display: block;
            font-weight: 500;
            letter-spacing: 0.08em;
            margin-top: 2px;
        }

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

        .sidebar-nav .nav-item {
            display: flex;
            align-items: center;
            gap: 14px;
            height: 48px;
            padding: 0 16px;
            border-radius: var(--radius-sm);
            color: var(--text-secondary);
            font-size: 15px;
            font-weight: 500;
            position: relative;
            transition: background 0.2s ease, color 0.2s ease;
        }

        .sidebar-nav .nav-item i {
            width: 20px;
            text-align: center;
            font-size: 16px;
            color: var(--text-muted);
            transition: color 0.2s ease;
        }

        .sidebar-nav .nav-item:hover {
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-main);
        }

        .sidebar-nav .nav-item:hover i {
            color: var(--accent);
        }

        .sidebar-nav .nav-item.active {
            background: rgba(0, 229, 255, 0.06);
            color: var(--text-main);
        }

        .sidebar-nav .nav-item.active i {
            color: var(--accent);
        }

        .sidebar-nav .nav-item.active::before {
            content: "";
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 22px;
            border-radius: 0 3px 3px 0;
            background: var(--accent);
            box-shadow: 0 0 12px rgba(0, 229, 255, 0.5);
        }

        .sidebar-badge {
            height: 44px;
            margin-top: 12px;
            padding: 0 14px;
            border-radius: 44px;
            background: var(--glass-bg);
            border: 1px solid rgba(212, 169, 78, 0.25);
            backdrop-filter: blur(12px);
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--gold);
            font-size: 13px;
            font-weight: 500;
        }

        .sidebar-badge i {
            font-size: 14px;
        }

        .mobile-topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 64px;
            z-index: 1100;
            background: rgba(5, 8, 20, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            align-items: center;
            justify-content: space-between;
            padding: 0 20px;
        }

        .mobile-topbar .topbar-brand {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-main);
        }

        .mobile-topbar .topbar-brand i {
            color: var(--accent);
            margin-right: 8px;
        }

        .menu-toggle {
            background: none;
            border: none;
            color: var(--text-main);
            font-size: 20px;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .menu-toggle:hover {
            background: rgba(255, 255, 255, 0.06);
        }

        .mobile-drawer {
            position: fixed;
            top: 0;
            left: 0;
            width: 280px;
            height: 100vh;
            background: rgba(10, 15, 32, 0.98);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            z-index: 1200;
            padding: 24px 16px;
            transform: translateX(-100%);
            transition: transform 0.3s ease;
            display: flex;
            flex-direction: column;
        }

        .mobile-drawer.show {
            transform: translateX(0);
        }

        .drawer-close {
            position: absolute;
            top: 16px;
            right: 16px;
            background: rgba(255, 255, 255, 0.06);
            border: none;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            color: var(--text-main);
            font-size: 16px;
            cursor: pointer;
        }

        .drawer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 8px 8px 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            margin-bottom: 16px;
            font-size: 17px;
            font-weight: 700;
            color: var(--text-main);
        }

        .drawer-brand i {
            color: var(--accent);
            font-size: 20px;
        }

        .drawer-nav {
            display: flex;
            flex-direction: column;
            gap: 4px;
            flex: 1;
        }

        .drawer-nav .nav-item {
            display: flex;
            align-items: center;
            gap: 12px;
            height: 48px;
            padding: 0 14px;
            border-radius: 10px;
            color: var(--text-secondary);
            font-size: 15px;
        }

        .drawer-nav .nav-item i {
            width: 20px;
            color: var(--text-muted);
        }

        .drawer-nav .nav-item.active {
            background: rgba(0, 229, 255, 0.06);
            color: var(--text-main);
        }

        .drawer-nav .nav-item.active i {
            color: var(--accent);
        }

        .drawer-overlay {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.55);
            z-index: 1150;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s ease, visibility 0.3s ease;
        }

        .drawer-overlay.show {
            opacity: 1;
            visibility: visible;
        }

        .app-main {
            margin-left: var(--sidebar-w);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        .app-main .container {
            max-width: var(--content-max);
            padding: 0 32px;
            margin: 0 auto;
            width: 100%;
        }

        .reading-progress {
            position: fixed;
            top: 0;
            left: var(--sidebar-w);
            right: 0;
            height: 2px;
            z-index: 1300;
            background: transparent;
            pointer-events: none;
        }

        .reading-progress .bar {
            height: 100%;
            width: 0%;
            background: var(--gradient-main);
            box-shadow: 0 0 10px rgba(0, 229, 255, 0.5);
            transition: width 0.08s linear;
        }

        .article-wrapper {
            flex: 1;
            padding: 56px 0 48px;
        }

        .breadcrumb-glass {
            display: inline-flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            padding: 8px 16px;
            border-radius: 32px;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(12px);
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 28px;
        }

        .breadcrumb-glass a {
            color: var(--text-secondary);
            transition: color 0.2s ease;
        }

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

        .breadcrumb-glass .sep {
            color: var(--text-muted);
        }

        .breadcrumb-glass .current {
            color: var(--text-main);
            max-width: 300px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .article-header {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            padding: 40px 44px;
            backdrop-filter: blur(18px);
            margin-bottom: 32px;
            position: relative;
            overflow: hidden;
        }

        .article-header::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: var(--gradient-main);
            opacity: 0.8;
        }

        .article-header h1 {
            font-size: 36px;
            line-height: 1.3;
            font-weight: 700;
            letter-spacing: 0.02em;
            color: var(--text-main);
            margin-bottom: 16px;
        }

        .article-summary {
            color: var(--text-secondary);
            font-size: 16px;
            line-height: 1.8;
            max-width: 780px;
            margin-bottom: 20px;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 18px;
            font-size: 14px;
            color: var(--text-muted);
        }

        .article-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 7px;
        }

        .article-meta .meta-item i {
            color: var(--accent);
            font-size: 14px;
        }

        .article-meta .badge-cat {
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 500;
            border: 1px solid rgba(0, 229, 255, 0.3);
            background: rgba(0, 229, 255, 0.06);
            color: var(--accent);
        }

        .article-body {
            max-width: 820px;
            margin: 0 auto;
            padding: 24px 8px 16px;
            color: var(--text-main);
            font-size: 16px;
            line-height: 1.9;
        }

        .article-body h2 {
            font-size: 26px;
            font-weight: 700;
            border-left: 4px solid var(--accent);
            padding-left: 16px;
            margin: 1.6em 0 0.8em;
            line-height: 1.4;
            color: var(--text-main);
        }

        .article-body h3 {
            font-size: 21px;
            font-weight: 600;
            margin: 1.4em 0 0.6em;
            color: var(--text-main);
        }

        .article-body h4 {
            font-size: 18px;
            font-weight: 600;
            margin: 1.2em 0 0.5em;
            color: var(--text-main);
        }

        .article-body p {
            margin-bottom: 1.4em;
            color: var(--text-secondary);
            line-height: 1.9;
        }

        .article-body strong {
            color: var(--text-main);
            font-weight: 600;
        }

        .article-body ul,
        .article-body ol {
            margin-bottom: 1.4em;
            padding-left: 1.5em;
            color: var(--text-secondary);
        }

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

        .article-body a {
            color: var(--accent);
            border-bottom: 1px solid rgba(0, 229, 255, 0.3);
            padding-bottom: 1px;
        }

        .article-body a:hover {
            border-bottom-color: var(--accent);
        }

        .article-body img {
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-regular);
            margin: 24px 0;
        }

        .article-body blockquote {
            border-left: 4px solid var(--gold);
            background: rgba(212, 169, 78, 0.06);
            padding: 18px 24px;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            color: var(--text-secondary);
            margin: 24px 0;
            font-style: italic;
        }

        .article-body blockquote p {
            margin-bottom: 0;
        }

        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            background: rgba(255, 255, 255, 0.02);
            border-radius: 12px;
            overflow: hidden;
        }

        .article-body th {
            background: rgba(0, 229, 255, 0.08);
            color: var(--text-main);
            padding: 12px 16px;
            font-weight: 600;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .article-body td {
            padding: 12px 16px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            color: var(--text-secondary);
        }

        .article-body tr:last-child td {
            border-bottom: none;
        }

        .article-body pre {
            background: #0d1226;
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 12px;
            padding: 20px 24px;
            overflow-x: auto;
            color: #b8c7e0;
            font-size: 14px;
            line-height: 1.7;
            margin: 24px 0;
        }

        .article-body code {
            background: rgba(255, 255, 255, 0.06);
            border-radius: 6px;
            padding: 2px 8px;
            font-size: 0.9em;
            color: var(--accent);
        }

        .article-body pre code {
            background: transparent;
            padding: 0;
            color: inherit;
        }

        .article-tags {
            margin: 40px 0 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .article-tags .tag {
            padding: 6px 16px;
            border-radius: 24px;
            font-size: 13px;
            border: 1px solid rgba(0, 229, 255, 0.3);
            background: rgba(0, 229, 255, 0.04);
            color: var(--accent);
            transition: all 0.2s ease;
        }

        .article-tags .tag:hover {
            background: rgba(0, 229, 255, 0.12);
            border-color: var(--accent);
        }

        .article-pagination {
            display: flex;
            justify-content: space-between;
            gap: 16px;
            margin: 32px 0 40px;
        }

        .pagination-btn {
            flex: 1;
            max-width: 320px;
            padding: 16px 20px;
            border-radius: var(--radius-md);
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            color: var(--text-secondary);
            font-size: 14px;
            transition: all 0.25s ease;
            display: block;
        }

        .pagination-btn:hover {
            border-color: rgba(0, 229, 255, 0.3);
            color: var(--text-main);
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            text-decoration: none;
        }

        .pagination-btn .dir {
            display: block;
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 4px;
        }

        .pagination-btn .title {
            color: var(--text-main);
            font-weight: 500;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .related-section {
            margin-top: 48px;
        }

        .related-section h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-main);
        }

        .related-section h3::before {
            content: "";
            width: 4px;
            height: 20px;
            border-radius: 2px;
            background: var(--accent);
            box-shadow: var(--glow);
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .related-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            padding: 0;
            transition: all 0.3s ease;
            display: block;
        }

        .related-card:hover {
            border-color: rgba(0, 229, 255, 0.25);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            text-decoration: none;
        }

        .related-card .card-img {
            height: 140px;
            overflow: hidden;
            position: relative;
            background: #0d1226;
        }

        .related-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: transform 0.4s ease;
        }

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

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

        .related-card .card-body .card-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 8px;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card .card-body .card-date {
            font-size: 13px;
            color: var(--text-muted);
        }

        .article-not-found {
            text-align: center;
            padding: 80px 24px;
            background: var(--glass-bg);
            border: 1px dashed rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-lg);
            max-width: 720px;
            margin: 0 auto;
        }

        .article-not-found i {
            font-size: 48px;
            color: var(--gold);
            margin-bottom: 20px;
            display: block;
        }

        .article-not-found h2 {
            font-size: 28px;
            color: var(--text-main);
            margin-bottom: 12px;
        }

        .article-not-found p {
            color: var(--text-secondary);
            margin-bottom: 24px;
        }

        .btn {
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            height: 48px;
            padding: 0 28px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            transition: all 0.25s ease;
            border: none;
            cursor: pointer;
        }

        .btn-primary {
            background: var(--gradient-main);
            color: #050814 !important;
            box-shadow: 0 0 24px rgba(0, 229, 255, 0.25);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 36px rgba(0, 229, 255, 0.4);
            color: #050814 !important;
        }

        .btn-primary:active {
            transform: scale(0.98);
        }

        .btn-outline {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: var(--text-main);
        }

        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.06);
            border-color: rgba(255, 255, 255, 0.3);
            color: var(--text-main);
        }

        .btn:focus,
        .btn:focus-visible {
            outline: none;
            box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.25), 0 0 24px rgba(0, 229, 255, 0.2);
        }

        .sticky-cta {
            position: fixed;
            bottom: 0;
            left: var(--sidebar-w);
            right: 0;
            height: 64px;
            z-index: 1050;
            background: rgba(5, 8, 20, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-top: 1px solid rgba(0, 229, 255, 0.2);
            display: flex;
            align-items: center;
            opacity: 0.92;
        }

        .sticky-cta .cta-inner {
            max-width: var(--content-max);
            width: 100%;
            margin: 0 auto;
            padding: 0 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }

        .sticky-cta .cta-text {
            font-size: 15px;
            color: var(--text-secondary);
            margin: 0;
        }

        .sticky-cta .cta-text strong {
            color: var(--text-main);
        }

        .sticky-cta .btn {
            height: 42px;
            padding: 0 24px;
            font-size: 14px;
            flex-shrink: 0;
        }

        .app-footer {
            background: #030510;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            margin-top: 48px;
            padding: 40px 0 100px;
            margin-left: var(--sidebar-w);
        }

        .app-footer .footer-inner {
            max-width: var(--content-max);
            margin: 0 auto;
            padding: 0 32px;
        }

        .footer-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 24px;
            margin-bottom: 24px;
            flex-wrap: wrap;
        }

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

        .footer-logo i {
            color: var(--accent);
            font-size: 20px;
        }

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

        .footer-links a {
            color: var(--text-secondary);
            font-size: 15px;
            transition: color 0.2s ease;
        }

        .footer-links a:hover {
            color: var(--accent);
            text-decoration: none;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            padding-top: 20px;
            font-size: 13px;
            color: var(--text-muted);
        }

        .footer-bottom p {
            margin: 0;
        }

        @media (min-width: 1200px) {
            :root {
                --sidebar-w: 240px;
            }
        }

        @media (min-width: 992px) and (max-width: 1199.98px) {
            :root {
                --sidebar-w: 220px;
            }

            .sidebar-brand .brand-text {
                font-size: 16px;
            }

            .sidebar-nav .nav-item {
                padding: 0 12px;
                font-size: 14px;
            }

            .article-wrapper {
                padding-top: 40px;
            }
        }

        @media (max-width: 991.98px) {
            .app-sidebar {
                display: none;
            }

            .mobile-topbar {
                display: flex;
            }

            .app-main {
                margin-left: 0;
                padding-top: 64px;
            }

            .reading-progress {
                left: 0;
            }

            .sticky-cta {
                left: 0;
            }

            .app-footer {
                margin-left: 0;
                padding-bottom: 96px;
            }

            .app-main .container,
            .footer-inner,
            .sticky-cta .cta-inner {
                padding-left: 20px;
                padding-right: 20px;
            }

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

            .article-header h1 {
                font-size: 30px;
            }

            .article-body {
                padding: 16px 0;
            }

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

            .article-wrapper {
                padding-top: 32px;
            }
        }

        @media (max-width: 767.98px) {
            :root {
                --section-space: 48px;
            }

            .app-main .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .footer-inner,
            .sticky-cta .cta-inner {
                padding-left: 16px;
                padding-right: 16px;
            }

            .breadcrumb-glass .current {
                max-width: 140px;
            }

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

            .article-summary {
                font-size: 15px;
            }

            .article-meta {
                gap: 12px;
            }

            .article-body h2 {
                font-size: 22px;
            }

            .article-body h3 {
                font-size: 19px;
            }

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

            .article-pagination {
                flex-direction: column;
            }

            .pagination-btn {
                max-width: 100%;
            }

            .sticky-cta .cta-text {
                font-size: 13px;
            }

            .sticky-cta .btn {
                padding: 0 16px;
                font-size: 13px;
                height: 38px;
            }

            .footer-top {
                flex-direction: column;
                align-items: flex-start;
                gap: 16px;
            }

            .footer-links {
                gap: 16px;
            }

            .footer-links a {
                font-size: 14px;
            }

            .article-not-found {
                padding: 48px 16px;
            }
        }

        @media (max-width: 520px) {
            .mobile-topbar {
                padding: 0 12px;
            }

            .topbar-brand {
                font-size: 15px !important;
            }

            .article-header {
                padding: 24px 18px;
                border-radius: 18px;
            }

            .article-header h1 {
                font-size: 23px;
            }

            .article-meta .meta-item {
                font-size: 13px;
            }

            .sticky-cta .cta-text {
                display: none;
            }

            .sticky-cta .cta-inner {
                justify-content: center;
            }

            .btn {
                height: 44px;
                padding: 0 20px;
                font-size: 14px;
            }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --bg-primary: #050814;
            --bg-panel: rgba(255, 255, 255, 0.04);
            --glass-gradient: linear-gradient(135deg, rgba(255, 255, 255, 0.10), rgba(255, 255, 255, 0.02));
            --glass-border: rgba(255, 255, 255, 0.10);
            --accent-cyan: #00E5FF;
            --accent-gold: #D4A94E;
            --accent-blue: #2B7FFF;
            --text-primary: #EDF2FF;
            --text-secondary: #A8B3D4;
            --text-muted: #5E6B8C;
            --gradient-main: linear-gradient(135deg, #00E5FF, #2B7FFF);
            --glow-cyan: 0 0 24px rgba(0, 229, 255, 0.35);
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-sm: 10px;
            --shadow-normal: 0 18px 40px rgba(0, 0, 0, 0.30);
            --shadow-hover: 0 24px 60px rgba(0, 0, 0, 0.45);
            --sidebar-width: 240px;
            --sidebar-width-md: 220px;
            --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-num: "Rajdhani", "DIN Alternate", "Arial Narrow", sans-serif;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-cn);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-primary);
            background-color: var(--bg-primary);
            background-image: radial-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px);
            background-size: 24px 24px;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
        }
        a:hover {
            color: #4de9ff;
        }
        ul,
        ol {
            list-style: none;
        }
        button {
            font-family: inherit;
        }
        a:focus-visible,
        button:focus-visible,
        .accordion-button:focus {
            outline: none;
            box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.15);
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 48px;
            padding: 0 28px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.02em;
            border: none;
            transition: all 0.25s ease;
        }
        .btn-primary-custom {
            background: var(--gradient-main);
            color: #04121F;
            box-shadow: var(--glow-cyan);
            border: none;
        }
        .btn-primary-custom:hover {
            color: #04121F;
            filter: brightness(1.08);
            transform: translateY(-1px);
            box-shadow: 0 0 32px rgba(0, 229, 255, 0.5);
        }
        .btn-primary-custom:active {
            transform: scale(0.98);
        }
        .btn-ghost-custom {
            background: transparent;
            color: var(--text-primary);
            border: 1px solid rgba(255, 255, 255, 0.25);
            backdrop-filter: blur(4px);
        }
        .btn-ghost-custom:hover {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-primary);
            border-color: rgba(255, 255, 255, 0.4);
        }
        .btn-ghost-custom:active {
            transform: scale(0.98);
        }
        .btn-link-custom {
            background: transparent;
            color: var(--accent-cyan);
            padding: 0;
            height: auto;
            font-weight: 600;
        }
        .btn-link-custom:hover {
            color: #4de9ff;
            text-decoration: underline;
        }
        .btn-sm-custom {
            height: 36px;
            padding: 0 18px;
            font-size: 13px;
            border-radius: 8px;
        }

        /* ===== 徽章 ===== */
        .section-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 14px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.04em;
        }
        .section-badge.gold {
            background: rgba(212, 169, 78, 0.08);
            border: 1px solid rgba(212, 169, 78, 0.35);
            color: var(--accent-gold);
        }
        .section-badge.cyan {
            background: rgba(0, 229, 255, 0.06);
            border: 1px solid rgba(0, 229, 255, 0.30);
            color: var(--accent-cyan);
        }
        .info-badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 3px 10px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 500;
            border: 1px solid rgba(0, 229, 255, 0.30);
            background: rgba(0, 229, 255, 0.06);
            color: var(--accent-cyan);
            white-space: nowrap;
        }
        .info-badge.gold {
            border-color: rgba(212, 169, 78, 0.35);
            background: rgba(212, 169, 78, 0.08);
            color: var(--accent-gold);
        }

        /* ===== 侧边栏 ===== */
        .app-sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: rgba(10, 15, 32, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-right: 1px solid rgba(255, 255, 255, 0.06);
            z-index: 1040;
            display: flex;
            flex-direction: column;
        }
        .sidebar-inner {
            display: flex;
            flex-direction: column;
            height: 100%;
            padding: 24px 16px 20px;
        }
        .sidebar-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 0 8px 24px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            margin-bottom: 20px;
        }
        .sidebar-logo i {
            font-size: 22px;
            color: var(--accent-cyan);
            filter: drop-shadow(0 0 6px rgba(0, 229, 255, 0.4));
        }
        .sidebar-logo span {
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 0.02em;
            color: var(--text-primary);
            line-height: 1.3;
        }
        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 6px;
            flex: 1;
        }
        .sidebar-nav .nav-item {
            display: flex;
            align-items: center;
            gap: 12px;
            height: 48px;
            padding: 0 12px;
            border-radius: var(--radius-sm);
            color: var(--text-secondary);
            font-size: 15px;
            font-weight: 500;
            position: relative;
            transition: background 0.2s ease, color 0.2s ease;
        }
        .sidebar-nav .nav-item i {
            width: 20px;
            text-align: center;
            font-size: 15px;
            color: var(--text-muted);
            transition: color 0.2s ease;
        }
        .sidebar-nav .nav-item:hover {
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-primary);
        }
        .sidebar-nav .nav-item:hover i {
            color: var(--accent-cyan);
        }
        .sidebar-nav .nav-item.active {
            background: rgba(0, 229, 255, 0.06);
            color: var(--accent-cyan);
            font-weight: 600;
        }
        .sidebar-nav .nav-item.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 22px;
            background: var(--accent-cyan);
            border-radius: 0 3px 3px 0;
            box-shadow: 0 0 8px rgba(0, 229, 255, 0.5);
        }
        .sidebar-nav .nav-item.active i {
            color: var(--accent-cyan);
        }
        .sidebar-badge {
            display: flex;
            align-items: center;
            gap: 8px;
            height: 44px;
            padding: 0 14px;
            margin-top: 16px;
            background: var(--glass-gradient);
            border: 1px solid rgba(212, 169, 78, 0.25);
            border-radius: 50px;
            backdrop-filter: blur(10px);
            font-size: 13px;
            font-weight: 600;
            color: var(--accent-gold);
        }
        .sidebar-badge i {
            font-size: 13px;
            color: var(--accent-gold);
        }

        /* ===== 移动端顶部栏 ===== */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 64px;
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
            background: rgba(5, 8, 20, 0.82);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            z-index: 1050;
        }
        .mobile-header .mobile-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.01em;
        }
        .mobile-header .mobile-logo i {
            color: var(--accent-cyan);
            font-size: 18px;
        }
        .mobile-menu-btn {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: var(--text-primary);
            width: 40px;
            height: 40px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            transition: background 0.2s;
        }
        .mobile-menu-btn:hover {
            background: rgba(255, 255, 255, 0.06);
        }
        .mobile-cta {
            height: 36px;
            padding: 0 16px;
            font-size: 13px;
        }

        /* ===== 移动端抽屉 ===== */
        .mobile-overlay {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.55);
            backdrop-filter: blur(2px);
            z-index: 1060;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s ease, visibility 0.3s ease;
        }
        .mobile-overlay.show {
            opacity: 1;
            visibility: visible;
        }
        .mobile-drawer {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            width: 280px;
            background: rgba(10, 15, 32, 0.97);
            backdrop-filter: blur(24px);
            z-index: 1070;
            transform: translateX(-100%);
            transition: transform 0.3s ease;
            padding: 24px 20px;
            display: flex;
            flex-direction: column;
            border-right: 1px solid rgba(255, 255, 255, 0.06);
        }
        .mobile-drawer.open {
            transform: translateX(0);
        }
        .drawer-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-bottom: 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            margin-bottom: 20px;
            font-size: 17px;
            font-weight: 700;
            color: var(--text-primary);
        }
        .drawer-close {
            background: rgba(255, 255, 255, 0.06);
            border: none;
            color: var(--text-secondary);
            width: 36px;
            height: 36px;
            border-radius: 10px;
            font-size: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
        }
        .drawer-close:hover {
            background: rgba(255, 255, 255, 0.12);
            color: var(--text-primary);
        }
        .drawer-nav {
            display: flex;
            flex-direction: column;
            gap: 6px;
            flex: 1;
        }
        .drawer-nav .drawer-link {
            display: flex;
            align-items: center;
            gap: 12px;
            height: 48px;
            padding: 0 12px;
            border-radius: var(--radius-sm);
            color: var(--text-secondary);
            font-size: 15px;
            font-weight: 500;
            transition: background 0.2s ease, color 0.2s ease;
        }
        .drawer-nav .drawer-link i {
            width: 20px;
            text-align: center;
            color: var(--text-muted);
        }
        .drawer-nav .drawer-link:hover {
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-primary);
        }
        .drawer-nav .drawer-link.active {
            background: rgba(0, 229, 255, 0.06);
            color: var(--accent-cyan);
            font-weight: 600;
        }
        .drawer-nav .drawer-link.active i {
            color: var(--accent-cyan);
        }
        .drawer-badge {
            display: flex;
            align-items: center;
            gap: 8px;
            height: 44px;
            padding: 0 14px;
            margin-top: 16px;
            background: var(--glass-gradient);
            border: 1px solid rgba(212, 169, 78, 0.25);
            border-radius: 50px;
            font-size: 13px;
            color: var(--accent-gold);
            font-weight: 600;
        }

        /* ===== 主内容区 ===== */
        .main-content {
            margin-left: var(--sidebar-width);
            padding: 32px 32px 140px;
            min-height: 100vh;
        }
        .main-content-inner {
            max-width: 1280px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 40px;
        }

        /* ===== 分类 Hero ===== */
        .category-hero {
            position: relative;
            min-height: 320px;
            display: flex;
            align-items: center;
            gap: 48px;
            padding: 48px;
            background: var(--glass-gradient);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            backdrop-filter: blur(18px) saturate(150%);
            overflow: hidden;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
            opacity: 0.12;
            pointer-events: none;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            top: -60px;
            right: 30%;
            width: 260px;
            height: 260px;
            background: rgba(0, 229, 255, 0.07);
            border-radius: 50%;
            filter: blur(60px);
            pointer-events: none;
        }
        .hero-content {
            flex: 1;
            position: relative;
            z-index: 2;
        }
        .hero-content .section-badge {
            margin-bottom: 16px;
        }
        .hero-content h1 {
            font-size: 42px;
            font-weight: 700;
            letter-spacing: 0.02em;
            color: var(--text-primary);
            line-height: 1.25;
            margin-bottom: 16px;
        }
        .hero-content p {
            color: var(--text-secondary);
            font-size: 16px;
            line-height: 1.75;
            max-width: 600px;
            margin-bottom: 24px;
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .hero-image {
            flex: 0 0 300px;
            height: 220px;
            border-radius: var(--radius-md);
            overflow: hidden;
            position: relative;
            z-index: 2;
            border: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: var(--shadow-normal);
        }
        .hero-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* ===== 主体大玻璃容器 ===== */
        .main-panel {
            background: var(--glass-gradient);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            padding: 48px;
            backdrop-filter: blur(18px) saturate(150%);
            box-shadow: var(--shadow-normal);
        }
        .panel-intro h2 {
            font-size: 30px;
            font-weight: 700;
            letter-spacing: 0.02em;
            color: var(--text-primary);
            margin-bottom: 16px;
            position: relative;
            padding-left: 16px;
        }
        .panel-intro h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 24px;
            background: var(--accent-cyan);
            border-radius: 4px;
            box-shadow: 0 0 10px rgba(0, 229, 255, 0.5);
        }
        .panel-intro p {
            color: var(--text-secondary);
            font-size: 16px;
            line-height: 1.8;
            margin-bottom: 0;
            max-width: 860px;
        }
        .panel-divider {
            height: 1px;
            background: rgba(255, 255, 255, 0.07);
            margin: 40px 0;
        }
        .panel-subsection h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 20px;
        }
        .content-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 12px 32px;
            margin-bottom: 36px;
        }
        .content-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.7;
            padding: 10px 0;
        }
        .content-list li i {
            color: var(--accent-cyan);
            margin-top: 4px;
            font-size: 14px;
            flex-shrink: 0;
        }
        .info-cards {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .info-card {
            background: var(--bg-panel);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            padding: 28px;
            transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
        }
        .info-card:hover {
            border-color: rgba(0, 229, 255, 0.25);
            box-shadow: 0 0 24px rgba(0, 229, 255, 0.10);
            transform: translateY(-2px);
        }
        .info-card-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: rgba(0, 229, 255, 0.08);
            border: 1px solid rgba(0, 229, 255, 0.20);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--accent-cyan);
            margin-bottom: 18px;
            box-shadow: 0 0 18px rgba(0, 229, 255, 0.10);
        }
        .info-card h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
        }
        .info-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== 流程 ===== */
        .process-section {
            margin-top: 8px;
        }
        .section-header {
            text-align: center;
            margin-bottom: 32px;
        }
        .section-header .section-badge {
            margin-bottom: 12px;
        }
        .section-header h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.02em;
        }
        .process-steps {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            position: relative;
        }
        .process-step {
            position: relative;
            background: var(--glass-gradient);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            backdrop-filter: blur(12px);
            transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
        }
        .process-step:hover {
            border-color: rgba(0, 229, 255, 0.25);
            box-shadow: var(--shadow-normal);
            transform: translateY(-2px);
        }
        .process-step::after {
            content: '';
            position: absolute;
            top: 50%;
            right: -24px;
            width: 20px;
            border-top: 1px dashed rgba(0, 229, 255, 0.35);
            z-index: 2;
        }
        .process-step:last-child::after {
            display: none;
        }
        .step-number {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(212, 169, 78, 0.10);
            border: 1px solid rgba(212, 169, 78, 0.30);
            color: var(--accent-gold);
            font-family: var(--font-num);
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
        }
        .process-step h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
        }
        .process-step p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== FAQ 手风琴 ===== */
        .faq-section {
            margin-top: 8px;
        }
        .accordion {
            max-width: 860px;
            margin: 0 auto;
            --bs-accordion-bg: transparent;
            --bs-accordion-border-color: transparent;
            --bs-accordion-border-radius: var(--radius-md);
            --bs-accordion-inner-border-radius: var(--radius-md);
            --bs-accordion-btn-focus-box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.15);
        }
        .accordion-item {
            background: var(--bg-panel);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md) !important;
            margin-bottom: 16px;
            overflow: hidden;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }
        .accordion-item:hover {
            border-color: rgba(0, 229, 255, 0.20);
        }
        .accordion-button {
            background: transparent;
            color: var(--text-primary);
            font-size: 16px;
            font-weight: 600;
            padding: 20px 24px;
            line-height: 1.5;
            transition: background 0.2s ease, color 0.2s ease;
        }
        .accordion-button:not(.collapsed) {
            background: rgba(0, 229, 255, 0.04);
            color: var(--accent-cyan);
            box-shadow: none;
        }
        .accordion-button::after {
            background-image: none;
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            content: "\f078";
            color: var(--accent-cyan);
            width: 20px;
            height: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: transform 0.2s ease;
        }
        .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
        }
        .accordion-body {
            padding: 0 24px 24px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 16px;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            text-align: center;
            padding: 56px 48px;
            background: var(--glass-gradient);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            backdrop-filter: blur(18px) saturate(150%);
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -80px;
            left: 50%;
            transform: translateX(-50%);
            width: 400px;
            height: 200px;
            background: rgba(0, 229, 255, 0.06);
            border-radius: 50%;
            filter: blur(80px);
            pointer-events: none;
        }
        .cta-section h3 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 14px;
            position: relative;
        }
        .cta-section p {
            color: var(--text-secondary);
            font-size: 15px;
            max-width: 640px;
            margin: 0 auto 28px;
            position: relative;
        }
        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
            position: relative;
        }

        /* ===== 页脚 ===== */
        .app-footer {
            margin-left: var(--sidebar-width);
            background: rgba(2, 4, 12, 0.60);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 40px 32px 100px;
        }
        .footer-inner {
            max-width: 1280px;
            margin: 0 auto;
        }
        .footer-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
        }
        .footer-logo i {
            color: var(--accent-cyan);
            font-size: 20px;
        }
        .footer-links {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        .footer-links a {
            color: var(--text-secondary);
            font-size: 14px;
            padding: 8px 14px;
            border-radius: 8px;
            transition: color 0.2s ease, background 0.2s ease;
        }
        .footer-links a:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.04);
        }
        .footer-bottom {
            margin-top: 28px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            text-align: center;
        }
        .footer-bottom p {
            color: var(--text-muted);
            font-size: 13px;
            margin: 0;
            line-height: 1.6;
        }

        /* ===== 底部固定转化条 ===== */
        .bottom-bar {
            position: fixed;
            bottom: 0;
            left: var(--sidebar-width);
            right: 0;
            height: 64px;
            background: rgba(5, 8, 20, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-top: 1px solid rgba(0, 229, 255, 0.20);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 32px;
            z-index: 1030;
            transition: transform 0.3s ease;
        }
        .bottom-bar .bar-text {
            color: var(--text-secondary);
            font-size: 14px;
        }
        .bottom-bar .bar-text i {
            color: var(--accent-cyan);
            margin-right: 6px;
        }
        .bottom-bar .bar-cta {
            height: 40px;
            padding: 0 22px;
            border-radius: var(--radius-sm);
            font-size: 14px;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1199px) {
            .app-sidebar {
                width: var(--sidebar-width-md);
            }
            .main-content {
                margin-left: var(--sidebar-width-md);
                padding: 28px 24px 120px;
            }
            .app-footer {
                margin-left: var(--sidebar-width-md);
                padding: 32px 24px 100px;
            }
            .bottom-bar {
                left: var(--sidebar-width-md);
                padding: 0 24px;
            }
            .category-hero {
                padding: 40px;
                gap: 32px;
            }
            .hero-image {
                flex-basis: 260px;
                height: 200px;
            }
        }
        @media (max-width: 991px) {
            .app-sidebar {
                display: none;
            }
            .mobile-header {
                display: flex;
            }
            .main-content {
                margin-left: 0;
                padding: 84px 20px 120px;
            }
            .app-footer {
                margin-left: 0;
                padding: 32px 20px 100px;
            }
            .bottom-bar {
                left: 0;
                padding: 0 20px;
            }
            .category-hero {
                min-height: auto;
                padding: 40px 32px;
            }
            .content-list {
                grid-template-columns: 1fr;
            }
            .process-steps {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .process-step::after {
                display: none;
            }
            .process-step {
                padding: 28px 24px;
            }
            .main-panel {
                padding: 36px 28px;
            }
        }
        @media (max-width: 768px) {
            .category-hero {
                flex-direction: column;
                gap: 24px;
                padding: 32px 24px;
            }
            .hero-content h1 {
                font-size: 32px;
            }
            .hero-image {
                width: 100%;
                flex: none;
                height: 180px;
            }
            .main-panel {
                padding: 28px 20px;
            }
            .panel-intro h2 {
                font-size: 24px;
            }
            .section-header h2 {
                font-size: 24px;
            }
            .info-cards {
                grid-template-columns: 1fr;
            }
            .cta-section {
                padding: 40px 24px;
            }
            .cta-section h3 {
                font-size: 22px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: flex-start;
                width: 100%;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .cta-actions {
                flex-direction: column;
                width: 100%;
            }
            .cta-actions .btn {
                width: 100%;
            }
            .footer-top {
                flex-direction: column;
                align-items: flex-start;
            }
            .footer-links {
                width: 100%;
            }
            .footer-links a {
                padding: 6px 10px;
                font-size: 13px;
            }
            .bottom-bar {
                height: 60px;
                padding: 0 16px;
            }
            .bottom-bar .bar-text {
                font-size: 12px;
            }
            .bottom-bar .bar-cta {
                height: 36px;
                padding: 0 16px;
                font-size: 13px;
            }
            .main-content {
                padding-left: 16px;
                padding-right: 16px;
                padding-bottom: 110px;
            }
            .app-footer {
                padding-left: 16px;
                padding-right: 16px;
            }
        }
        @media (max-width: 480px) {
            .main-content {
                padding-top: 76px;
                padding-bottom: 100px;
                gap: 24px;
            }
            .main-content-inner {
                gap: 24px;
            }
            .mobile-header .mobile-logo span {
                font-size: 14px;
            }
            .mobile-cta {
                display: none;
            }
            .hero-content p {
                font-size: 14px;
            }
            .panel-intro p {
                font-size: 14px;
            }
            .content-list li {
                font-size: 14px;
            }
            .info-card {
                padding: 20px;
            }
            .process-step {
                padding: 24px 20px;
            }
            .accordion-button {
                font-size: 15px;
                padding: 16px 18px;
            }
            .accordion-body {
                padding: 0 18px 18px;
                font-size: 14px;
            }
        }

/* roulang page: category2 */
:root {
  --bg-primary: #050814;
  --bg-panel: rgba(255, 255, 255, 0.04);
  --glass-gradient: linear-gradient(135deg, rgba(255, 255, 255, 0.10), rgba(255, 255, 255, 0.02));
  --border-glass: rgba(255, 255, 255, 0.10);
  --accent-cyan: #00E5FF;
  --accent-blue: #2B7FFF;
  --accent-gold: #D4A94E;
  --text-primary: #EDF2FF;
  --text-secondary: #A8B3D4;
  --text-muted: #5E6B8C;
  --gradient-main: linear-gradient(135deg, #00E5FF, #2B7FFF);
  --shadow-card: 0 18px 40px rgba(0, 0, 0, 0.30);
  --shadow-hover: 0 24px 60px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(0, 229, 255, 0.10);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 10px;
  --radius-xs: 8px;
  --space-section: 80px;
  --sidebar-w: 240px;
  --sidebar-w-md: 220px;
  --mobile-header-h: 64px;
  --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-num: "Rajdhani", "DIN Alternate", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  background: var(--bg-primary);
  background-image: radial-gradient(circle at 30% 20%, rgba(0, 229, 255, 0.05) 0%, transparent 60%);
  color: var(--text-primary);
  font-family: var(--font-cn);
  font-size: 16px;
  line-height: 1.75;
  min-height: 100vh;
  overflow-x: hidden;
}

a {
  color: var(--accent-cyan);
  text-decoration: none;
  transition: all 0.25s ease;
}

a:hover {
  color: #fff;
  text-decoration: none;
}

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

button {
  font-family: var(--font-cn);
}

/* 左侧导航 */
.sidebar {
  position: fixed;
  left: 0;
  top: 0;
  width: var(--sidebar-w);
  height: 100vh;
  background: rgba(10, 15, 32, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-right: 1px solid rgba(255, 255, 255, 0.06);
  z-index: 1050;
  display: flex;
  flex-direction: column;
  padding: 32px 20px 20px;
  transition: transform 0.3s ease;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 12px 28px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  margin-bottom: 24px;
}

.sidebar-logo .logo-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--glass-gradient);
  border: 1px solid var(--border-glass);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  font-size: 20px;
  flex-shrink: 0;
}

.sidebar-logo .logo-icon i {
  filter: drop-shadow(0 0 8px rgba(0, 229, 255, 0.4));
}

.sidebar-logo .logo-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.02em;
  line-height: 1.3;
}

.sidebar-nav {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 14px;
  height: 48px;
  padding: 0 14px;
  border-radius: 12px;
  color: var(--text-secondary);
  font-size: 15px;
  font-weight: 500;
  position: relative;
  transition: all 0.25s ease;
}

.nav-item i {
  width: 20px;
  text-align: center;
  font-size: 16px;
}

.nav-item:hover {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-primary);
}

.nav-item.active {
  background: rgba(0, 229, 255, 0.06);
  color: var(--accent-cyan);
}

.nav-item.active::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 24px;
  border-radius: 3px;
  background: var(--accent-cyan);
  box-shadow: 0 0 10px rgba(0, 229, 255, 0.5);
}

.sidebar-auth {
  margin-top: auto;
  height: 44px;
  background: var(--glass-gradient);
  border: 1px solid rgba(212, 169, 78, 0.25);
  border-radius: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 16px;
  font-size: 13px;
  color: var(--accent-gold);
  font-weight: 500;
}

.sidebar-auth i {
  font-size: 14px;
}

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

.main-content {
  flex: 1;
  max-width: 1280px;
  width: 100%;
  padding: 0 32px;
  margin: 0 auto;
}

/* 移动端顶部栏 */
.mobile-header {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--mobile-header-h);
  background: rgba(5, 8, 20, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  z-index: 1050;
  align-items: center;
  padding: 0 20px;
  gap: 16px;
}

.mobile-header .menu-toggle {
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 20px;
  padding: 8px;
  cursor: pointer;
}

.mobile-header .mobile-logo {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.mobile-header .mobile-cta {
  height: 36px;
  padding: 0 16px;
  border-radius: 10px;
  background: var(--gradient-main);
  border: none;
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  box-shadow: 0 0 18px rgba(0, 229, 255, 0.3);
}

.drawer-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  z-index: 1040;
}

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

/* Hero 分类页 */
.category-hero {
  position: relative;
  min-height: 320px;
  margin: 32px 0 48px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  display: flex;
  align-items: center;
  border: 1px solid var(--border-glass);
  box-shadow: var(--shadow-card);
}

.category-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(5, 8, 20, 0.92) 0%, rgba(5, 8, 20, 0.65) 60%, rgba(5, 8, 20, 0.2) 100%);
  z-index: 1;
}

.category-hero .hero-content {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  width: 100%;
  padding: 48px;
}

.category-hero .hero-text {
  flex: 1;
  max-width: 580px;
}

.category-hero .hero-text h1 {
  font-size: 44px;
  font-weight: 700;
  margin: 0 0 12px;
  letter-spacing: 0.02em;
  color: var(--text-primary);
  position: relative;
  display: inline-block;
}

.category-hero .hero-text h1::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 56px;
  height: 3px;
  border-radius: 3px;
  background: var(--gradient-main);
  box-shadow: 0 0 12px rgba(0, 229, 255, 0.5);
}

.category-hero .hero-text p {
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.8;
  margin: 20px 0 0;
}

.category-hero .hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.badge-gold {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border: 1px solid rgba(212, 169, 78, 0.4);
  border-radius: 20px;
  font-size: 12px;
  color: var(--accent-gold);
  background: rgba(212, 169, 78, 0.08);
  font-weight: 500;
}

.badge-cyan {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border: 1px solid rgba(0, 229, 255, 0.3);
  border-radius: 20px;
  font-size: 12px;
  color: var(--accent-cyan);
  background: rgba(0, 229, 255, 0.06);
  font-weight: 500;
}

.category-hero .hero-image {
  flex-shrink: 0;
  width: 320px;
  height: 220px;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: var(--shadow-card);
}

.category-hero .hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* 主指南面板 */
.main-guide-panel {
  background: var(--glass-gradient);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  padding: 48px;
  margin-bottom: var(--space-section);
  box-shadow: var(--shadow-card);
}

.guide-intro-text {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.guide-intro-text strong {
  color: var(--text-primary);
}

.guide-subsection {
  margin-bottom: 36px;
  padding-left: 24px;
  position: relative;
}

.guide-subsection::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 4px;
  height: 28px;
  border-radius: 4px;
  background: var(--gradient-main);
  opacity: 0.7;
}

.guide-subsection h3 {
  font-size: 22px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 8px;
}

.guide-subsection p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.8;
  margin: 0;
}

.guide-subsection .sub-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(0, 229, 255, 0.06);
  border: 1px solid rgba(0, 229, 255, 0.2);
  border-radius: var(--radius-xs);
  font-size: 13px;
  color: var(--accent-cyan);
  margin-top: 14px;
}

/* 辅助信息卡 */
.guide-info-cards {
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.guide-info-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 28px;
  height: 100%;
  transition: all 0.3s ease;
}

.guide-info-card:hover {
  border-color: rgba(0, 229, 255, 0.25);
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.guide-info-card .card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(0, 229, 255, 0.08);
  border: 1px solid rgba(0, 229, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--accent-cyan);
  margin-bottom: 16px;
}

.guide-info-card h5 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

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

/* FAQ 区域 */
.section-title {
  text-align: center;
  margin-bottom: 40px;
}

.section-title h2 {
  font-size: 30px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.section-title p {
  color: var(--text-secondary);
  font-size: 15px;
  max-width: 560px;
  margin: 0 auto;
}

.guide-faq {
  margin-bottom: var(--space-section);
}

.accordion {
  max-width: 860px;
  margin: 0 auto;
}

.accordion-item {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.accordion-item:focus-within {
  border-color: rgba(0, 229, 255, 0.4);
}

.accordion-button {
  background: transparent;
  color: var(--text-primary);
  font-size: 16px;
  font-weight: 500;
  padding: 20px 24px;
  border: none;
  box-shadow: none;
}

.accordion-button:hover {
  background: rgba(255, 255, 255, 0.03);
}

.accordion-button:not(.collapsed) {
  background: rgba(0, 229, 255, 0.04);
  color: var(--text-primary);
  box-shadow: none;
}

.accordion-button:focus {
  box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.15);
  border-radius: var(--radius-md);
}

.accordion-button::after {
  background-image: none;
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  content: "\f078";
  color: var(--accent-cyan);
  width: auto;
  height: auto;
  transition: transform 0.2s ease;
}

.accordion-button:not(.collapsed)::after {
  background-image: none;
  transform: rotate(180deg);
}

.accordion-body {
  color: var(--text-secondary);
  font-size: 15px;
  padding: 0 24px 20px;
  line-height: 1.8;
}

/* CTA 区域 */
.back-home-cta {
  text-align: center;
  padding: 60px 0 var(--space-section);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 48px;
  padding: 0 28px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--text-primary);
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.25s ease;
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(0, 229, 255, 0.3);
  color: var(--accent-cyan);
  transform: translateY(-2px);
}

/* 页脚 */
.app-footer {
  background: rgba(3, 5, 12, 0.9);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 40px 32px 24px;
}

.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
  padding-bottom: 28px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
}

.footer-logo i {
  color: var(--accent-cyan);
  font-size: 18px;
}

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

.footer-links a {
  color: var(--text-secondary);
  font-size: 14px;
}

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

.footer-bottom {
  padding-top: 20px;
  text-align: center;
}

.footer-bottom p {
  color: var(--text-muted);
  font-size: 13px;
  margin: 0;
}

/* 底部转化条 */
.bottom-conversion {
  position: fixed;
  left: var(--sidebar-w);
  right: 0;
  bottom: 0;
  height: 64px;
  background: rgba(5, 8, 20, 0.82);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  border-top: 1px solid rgba(0, 229, 255, 0.2);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  transition: transform 0.3s ease;
}

.bottom-conversion.hidden {
  transform: translateY(100%);
}

.bottom-conversion .conversion-text {
  color: var(--text-secondary);
  font-size: 14px;
}

.bottom-conversion .conversion-text i {
  color: var(--accent-cyan);
  margin-right: 8px;
}

.btn-primary-cyan {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 40px;
  padding: 0 24px;
  border-radius: 10px;
  background: var(--gradient-main);
  border: none;
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 0 18px rgba(0, 229, 255, 0.3);
  transition: all 0.25s ease;
}

.btn-primary-cyan:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
  color: #fff;
  box-shadow: 0 0 26px rgba(0, 229, 255, 0.45);
}

.btn-primary-cyan:active {
  transform: scale(0.98);
}

/* 响应式 */
@media (max-width: 1199.98px) {
  .sidebar {
    width: var(--sidebar-w-md);
  }
  .main-wrapper {
    margin-left: var(--sidebar-w-md);
  }
  .bottom-conversion {
    left: var(--sidebar-w-md);
  }
  .category-hero .hero-image {
    width: 260px;
    height: 190px;
  }
}

@media (max-width: 991.98px) {
  .sidebar {
    transform: translateX(-100%);
    width: 280px;
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .mobile-header {
    display: flex;
  }
  .main-wrapper {
    margin-left: 0;
    padding-top: var(--mobile-header-h);
  }
  .bottom-conversion {
    left: 0;
  }
  .main-content {
    padding: 0 20px;
  }
  .category-hero {
    min-height: auto;
    padding: 24px;
  }
  .category-hero .hero-content {
    flex-direction: column;
    padding: 32px 24px;
  }
  .category-hero .hero-image {
    width: 100%;
    height: 180px;
  }
  .category-hero .hero-text h1 {
    font-size: 34px;
  }
  .main-guide-panel {
    padding: 32px 24px;
  }
}

@media (max-width: 767.98px) {
  :root {
    --space-section: 48px;
  }
  .category-hero {
    margin: 20px 0 32px;
  }
  .category-hero .hero-content {
    padding: 24px 16px;
  }
  .category-hero .hero-text h1 {
    font-size: 30px;
  }
  .category-hero .hero-text p {
    font-size: 14px;
  }
  .main-guide-panel {
    padding: 24px 16px;
    border-radius: 16px;
  }
  .guide-subsection {
    padding-left: 16px;
  }
  .guide-subsection h3 {
    font-size: 18px;
  }
  .guide-info-card {
    margin-bottom: 12px;
  }
  .section-title h2 {
    font-size: 24px;
  }
  .bottom-conversion {
    padding: 0 16px;
    height: 58px;
  }
  .bottom-conversion .conversion-text {
    font-size: 12px;
  }
  .bottom-conversion .conversion-text span {
    display: none;
  }
  .btn-primary-cyan {
    height: 36px;
    padding: 0 16px;
    font-size: 13px;
  }
  .footer-top {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
  .footer-links {
    gap: 16px;
  }
}

@media (max-width: 520px) {
  .category-hero .hero-badges {
    flex-direction: column;
    align-items: flex-start;
  }
  .main-content {
    padding: 0 14px;
  }
  .accordion-button {
    font-size: 14px;
    padding: 16px 18px;
  }
  .accordion-body {
    font-size: 14px;
    padding: 0 18px 16px;
  }
}

/* 禁止 Bootstrap 默认蓝色 */
.btn:focus,
.btn-ghost:focus,
.accordion-button:focus,
.nav-item:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.15);
}

::selection {
  background: rgba(0, 229, 255, 0.3);
  color: #fff;
}

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 229, 255, 0.3);
}

/* roulang page: category3 */
:root {
            --bg-primary: #050814;
            --bg-panel: rgba(255, 255, 255, 0.04);
            --glass-surface: linear-gradient(135deg, rgba(255, 255, 255, 0.10), rgba(255, 255, 255, 0.02));
            --glass-border: rgba(255, 255, 255, 0.10);
            --accent: #00E5FF;
            --accent-2: #2B7FFF;
            --gold: #D4A94E;
            --text-main: #EDF2FF;
            --text-secondary: #A8B3D4;
            --text-weak: #5E6B8C;
            --gradient-main: linear-gradient(135deg, #00E5FF, #2B7FFF);
            --shadow-card: 0 18px 40px rgba(0, 0, 0, 0.30);
            --shadow-hover: 0 24px 60px rgba(0, 0, 0, 0.45);
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-sm: 10px;
            --sidebar-w: 240px;
            --font-cn: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --font-en: 'Rajdhani', 'DIN Alternate', sans-serif;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-cn);
            background-color: var(--bg-primary);
            background-image: radial-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px);
            background-size: 28px 28px;
            color: var(--text-main);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

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

        button {
            font-family: inherit;
        }

        @media (min-width: 992px) and (max-width: 1199.98px) {
            :root {
                --sidebar-w: 220px;
            }
        }

        @media (min-width: 1200px) {
            :root {
                --sidebar-w: 240px;
            }
        }

        /* ===== 按钮 ===== */
        .btn-main {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            height: 48px;
            padding: 0 28px;
            border-radius: 10px;
            background: var(--gradient-main);
            color: #051024;
            font-weight: 700;
            border: none;
            letter-spacing: 0.02em;
            box-shadow: 0 0 24px rgba(0, 229, 255, 0.35);
            transition: transform 0.2s ease, filter 0.2s ease, box-shadow 0.2s ease;
        }

        .btn-main:hover {
            transform: translateY(-1px);
            filter: brightness(1.08);
            box-shadow: 0 0 32px rgba(0, 229, 255, 0.50);
            color: #051024;
        }

        .btn-main:active {
            transform: scale(0.98);
        }

        .btn-main:focus {
            outline: none;
            box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.25);
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            height: 48px;
            padding: 0 28px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-main);
            border: 1px solid rgba(255, 255, 255, 0.16);
            transition: all 0.2s ease;
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-main);
            border-color: rgba(255, 255, 255, 0.24);
        }

        .btn-ghost:active {
            transform: scale(0.98);
        }

        .btn-ghost:focus {
            outline: none;
            box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.2);
        }

        .btn-sm {
            height: 40px;
            padding: 0 18px;
            font-size: 14px;
            border-radius: 8px;
        }

        /* ===== 侧边导航 ===== */
        .sidebar {
            position: fixed;
            z-index: 1040;
            top: 0;
            left: 0;
            width: var(--sidebar-w);
            height: 100vh;
            background: rgba(10, 15, 32, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-right: 1px solid rgba(255, 255, 255, 0.06);
            display: flex;
            flex-direction: column;
            padding: 24px 16px 20px;
        }

        .sidebar-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 4px 8px 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            margin-bottom: 22px;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: linear-gradient(135deg, rgba(0, 229, 255, 0.18), rgba(255, 255, 255, 0.04));
            border: 1px solid rgba(0, 229, 255, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 18px;
            box-shadow: 0 0 16px rgba(0, 229, 255, 0.20);
        }

        .logo-text {
            font-size: 19px;
            font-weight: 700;
            font-family: var(--font-en), var(--font-cn);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

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

        .nav-item {
            position: relative;
            display: flex;
            align-items: center;
            gap: 14px;
            height: 48px;
            padding: 0 16px;
            border-radius: 10px;
            color: var(--text-secondary);
            font-size: 15.5px;
            font-weight: 500;
            transition: all 0.2s ease;
        }

        .nav-item i {
            width: 20px;
            text-align: center;
            font-size: 16px;
        }

        .nav-item:hover {
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-main);
        }

        .nav-item.active {
            color: var(--accent);
            background: rgba(0, 229, 255, 0.06);
        }

        .nav-item.active::before {
            content: "";
            position: absolute;
            left: -16px;
            top: 12px;
            bottom: 12px;
            width: 3px;
            border-radius: 0 4px 4px 0;
            background: var(--accent);
            box-shadow: 0 0 12px rgba(0, 229, 255, 0.70);
        }

        .sidebar-auth {
            margin-top: auto;
        }

        .auth-pill {
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: linear-gradient(135deg, rgba(212, 169, 78, 0.14), rgba(255, 255, 255, 0.03));
            border: 1px solid rgba(212, 169, 78, 0.25);
            border-radius: 999px;
            color: var(--gold);
            font-size: 14px;
            font-weight: 600;
        }

        /* ===== 移动端顶栏 / 抽屉 ===== */
        .topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 64px;
            background: rgba(5, 8, 20, 0.86);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            align-items: center;
            z-index: 1050;
            padding: 0 16px;
            gap: 12px;
        }

        .topbar-burger {
            width: 42px;
            height: 42px;
            border-radius: 10px;
            border: 1px solid rgba(255, 255, 255, 0.10);
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-main);
            font-size: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.2s;
            flex-shrink: 0;
        }

        .topbar-burger:hover {
            background: rgba(255, 255, 255, 0.08);
            color: var(--accent);
        }

        .topbar-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 17px;
            color: var(--text-main);
            flex: 1;
            min-width: 0;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .topbar-logo i {
            color: var(--accent);
        }

        .sidebar-backdrop {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.55);
            backdrop-filter: blur(4px);
            z-index: 1035;
        }

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

        /* ===== 主内容 ===== */
        .main-content {
            margin-left: var(--sidebar-w);
            min-height: 100vh;
        }

        .content-wrap {
            max-width: 1280px;
            margin: 0 auto;
            padding: 32px 32px 120px;
        }

        @media (max-width: 991.98px) {
            .sidebar {
                transform: translateX(-100%);
                transition: transform 0.3s ease;
                box-shadow: none;
                width: 280px;
            }

            .sidebar.open {
                transform: translateX(0);
                box-shadow: 0 0 60px rgba(0, 0, 0, 0.50);
            }

            .main-content {
                margin-left: 0;
                padding-top: 64px;
            }

            .topbar {
                display: flex;
            }

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

            .app-cta-bar {
                left: 0;
            }
        }

        /* ===== 分类 Hero ===== */
        .category-hero {
            position: relative;
            height: 320px;
            border-radius: 24px;
            overflow: hidden;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02)), url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
            border: 1px solid rgba(255, 255, 255, 0.10);
            box-shadow: var(--shadow-card);
            margin-bottom: 56px;
        }

        .category-hero::before {
            content: "";
            position: absolute;
            top: -80px;
            right: 10%;
            width: 280px;
            height: 280px;
            background: rgba(0, 229, 255, 0.10);
            filter: blur(80px);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            padding: 48px 56px;
            max-width: 640px;
        }

        .hero-badges {
            display: flex;
            gap: 10px;
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .badge-gold {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            border: 1px solid rgba(212, 169, 78, 0.40);
            background: rgba(212, 169, 78, 0.08);
            color: var(--gold);
            font-size: 12px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 999px;
            letter-spacing: 0.03em;
        }

        .badge-cyan {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            border: 1px solid rgba(0, 229, 255, 0.30);
            background: rgba(0, 229, 255, 0.07);
            color: var(--accent);
            font-size: 12px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 999px;
        }

        .category-hero h1 {
            font-size: 42px;
            font-weight: 700;
            margin: 8px 0 14px;
            letter-spacing: 0.02em;
        }

        .category-hero p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 540px;
            line-height: 1.8;
            margin: 0;
        }

        .hero-figure {
            position: relative;
            z-index: 2;
            padding: 24px 56px 24px 0;
            margin-left: auto;
        }

        .img-frame {
            width: 300px;
            height: 220px;
            border-radius: 20px;
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.12);
            background: rgba(255, 255, 255, 0.04);
            box-shadow: var(--shadow-hover);
            position: relative;
        }

        .img-frame img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        .img-fallback {
            display: none;
            position: absolute;
            inset: 0;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 36px;
            background: linear-gradient(135deg, rgba(0, 229, 255, 0.08), rgba(255, 255, 255, 0.02));
        }

        /* ===== 分类内容面板 ===== */
        .category-panel {
            background: var(--glass-surface);
            border: 1px solid var(--glass-border);
            border-radius: 24px;
            padding: 48px;
            backdrop-filter: blur(18px) saturate(150%);
            -webkit-backdrop-filter: blur(18px) saturate(150%);
            box-shadow: var(--shadow-card);
            margin-bottom: 56px;
        }

        .intro-block p {
            font-size: 16.5px;
            color: var(--text-secondary);
            line-height: 1.9;
            margin: 0 0 28px;
        }

        .section-block {
            margin-top: 36px;
        }

        .section-block h2 {
            position: relative;
            padding-left: 16px;
            margin: 0 0 16px;
            font-size: 22px;
            font-weight: 700;
        }

        .section-block h2::before {
            content: "";
            position: absolute;
            left: 0;
            top: 6px;
            bottom: 6px;
            width: 4px;
            background: linear-gradient(180deg, var(--accent), var(--accent-2));
            border-radius: 4px;
            box-shadow: 0 0 10px rgba(0, 229, 255, 0.40);
        }

        .section-block p {
            color: var(--text-secondary);
            font-size: 15.5px;
            line-height: 1.85;
            margin: 0;
        }

        /* ===== 辅助信息卡 ===== */
        .info-card-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
            margin-top: 40px;
        }

        .info-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 16px;
            padding: 24px;
            transition: all 0.25s ease;
        }

        .info-card:hover {
            border-color: rgba(0, 229, 255, 0.25);
            box-shadow: 0 18px 40px rgba(0, 0, 0, 0.30), 0 0 0 1px rgba(0, 229, 255, 0.08);
            transform: translateY(-2px);
        }

        .info-card-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 16px;
        }

        .info-card-icon.cyan {
            background: rgba(0, 229, 255, 0.10);
            border: 1px solid rgba(0, 229, 255, 0.25);
            color: var(--accent);
            box-shadow: 0 0 18px rgba(0, 229, 255, 0.15);
        }

        .info-card-icon.gold {
            background: rgba(212, 169, 78, 0.10);
            border: 1px solid rgba(212, 169, 78, 0.25);
            color: var(--gold);
            box-shadow: 0 0 18px rgba(212, 169, 78, 0.12);
        }

        .info-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin: 0 0 10px;
        }

        .info-card p {
            color: var(--text-secondary);
            font-size: 14.5px;
            line-height: 1.75;
            margin: 0 0 16px;
        }

        .text-link {
            color: var(--accent);
            font-size: 14.5px;
            font-weight: 600;
            transition: all 0.2s;
        }

        .text-link:hover {
            color: #66EFFF;
            text-decoration: underline;
        }

        /* ===== FAQ ===== */
        .faq-section {
            margin-bottom: 56px;
        }

        .faq-heading {
            text-align: center;
            margin-bottom: 32px;
        }

        .faq-heading h2 {
            font-size: 28px;
            font-weight: 700;
            margin: 0 0 8px;
        }

        .faq-heading p {
            color: var(--text-secondary);
            margin: 0;
        }

        .accordion {
            --bs-accordion-bg: transparent;
            --bs-accordion-border-width: 0;
        }

        .accordion-item {
            background: rgba(255, 255, 255, 0.03) !important;
            border: 1px solid rgba(255, 255, 255, 0.08) !important;
            border-radius: 16px !important;
            margin-bottom: 14px;
            overflow: hidden;
            color: var(--text-secondary);
            transition: border-color 0.25s ease;
        }

        .accordion-item:hover {
            border-color: rgba(255, 255, 255, 0.16) !important;
        }

        .accordion-button {
            background: transparent;
            color: var(--text-main);
            font-weight: 600;
            font-size: 16px;
            padding: 20px 24px;
            box-shadow: none !important;
            transition: background 0.2s ease, color 0.2s ease;
        }

        .accordion-button:not(.collapsed) {
            background: rgba(0, 229, 255, 0.04);
            color: var(--text-main);
        }

        .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.15) !important;
            border-radius: 16px 16px 0 0;
        }

        .accordion-button::after {
            background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16" fill="%2300E5FF"><path fill-rule="evenodd" d="M1.5 4.5 8 11l6.5-6.5"/></svg>');
            background-size: 1.2rem;
            transition: transform 0.2s ease;
        }

        .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
        }

        .accordion-body {
            color: var(--text-secondary);
            line-height: 1.85;
            padding: 0 24px 22px;
            font-size: 15px;
        }

        /* ===== CTA ===== */
        .category-cta {
            text-align: center;
            padding: 8px 0 24px;
        }

        /* ===== 页脚 ===== */
        .app-footer {
            margin-left: var(--sidebar-w);
            background: rgba(2, 4, 12, 0.80);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 32px 32px 88px;
        }

        .footer-inner {
            max-width: 1280px;
            margin: 0 auto;
        }

        .footer-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 20px;
            padding-bottom: 24px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

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

        .footer-logo i {
            color: var(--accent);
        }

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

        .footer-links a {
            color: var(--text-secondary);
            font-size: 14.5px;
            transition: color 0.2s;
        }

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

        .footer-bottom {
            padding-top: 20px;
        }

        .footer-bottom p {
            color: var(--text-weak);
            font-size: 13.5px;
            margin: 0;
            text-align: center;
        }

        /* ===== 底部固定转化条 ===== */
        .app-cta-bar {
            position: fixed;
            left: var(--sidebar-w);
            right: 0;
            bottom: 0;
            z-index: 1030;
            height: 64px;
            background: rgba(5, 8, 20, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-top: 1px solid rgba(0, 229, 255, 0.20);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 0 28px;
            transition: transform 0.3s ease, opacity 0.3s ease;
        }

        .app-cta-bar.hide {
            transform: translateY(100%);
            opacity: 0;
        }

        .cta-text {
            color: var(--text-secondary);
            font-size: 14.5px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        /* ===== 响应式 ===== */
        @media (min-width: 768px) and (max-width: 991.98px) {
            .hero-content {
                padding: 40px;
            }

            .hero-figure {
                padding-right: 40px;
            }

            .img-frame {
                width: 260px;
                height: 200px;
            }

            .category-panel {
                padding: 36px;
            }

            .category-hero h1 {
                font-size: 38px;
            }
        }

        @media (max-width: 767px) {
            .category-hero {
                height: auto;
                padding: 32px 24px;
                flex-direction: column;
                align-items: flex-start;
            }

            .hero-content {
                padding: 0;
                max-width: 100%;
            }

            .hero-figure {
                padding: 0;
                margin-top: 28px;
                width: 100%;
            }

            .img-frame {
                width: 100%;
                height: 200px;
            }

            .category-panel {
                padding: 28px 20px;
            }

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

            .content-wrap {
                padding: 16px 16px 120px;
            }

            .category-hero h1 {
                font-size: 34px;
            }

            .app-cta-bar {
                padding: 0 16px;
            }

            .cta-text {
                max-width: 180px;
            }

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