/* roulang page: index */
:root {
            --primary: #00B4FF;
            --primary-deep: #0077FF;
            --accent: #00FFC6;
            --warning: #FF9F0A;
            --bg: #0A0F1F;
            --bg-soft: #121929;
            --text-primary: #F5F9FF;
            --text-secondary: #A0B0C3;
            --text-muted: #66788F;
            --border: rgba(255,255,255,0.08);
            --border-light: rgba(255,255,255,0.06);
            --radius: 14px;
            --radius-btn: 999px;
            --radius-input: 12px;
            --shadow: 0 8px 32px rgba(0,0,0,0.35);
            --shadow-hover: 0 12px 40px rgba(0,180,255,0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --gradient-main: linear-gradient(135deg, #0099FF, #0070FF);
        }
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "HarmonyOS Sans SC", "Noto Sans SC", sans-serif;
            font-size: 16px;
            line-height: 1.6;
            color: var(--text-primary);
            background-color: var(--bg);
            background-image: radial-gradient(ellipse at 20% 0%, rgba(0,180,255,0.08) 0%, transparent 50%), radial-gradient(ellipse at 80% 100%, rgba(0,255,198,0.04) 0%, transparent 40%);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--accent); }
        button, input, select, textarea { font-family: inherit; font-size: inherit; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 80;
            background: rgba(10, 15, 31, 0.3);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255,255,255,0.06);
            transition: background var(--transition), box-shadow var(--transition);
        }
        .header.scrolled {
            background: rgba(10,15,31,0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            box-shadow: 0 4px 20px rgba(0,0,0,0.4);
            border-bottom-color: rgba(255,255,255,0.05);
        }
        .nav-wrap { display: flex; align-items: center; height: 72px; justify-content: space-between; }
        .logo-area { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
        .logo-icon {
            width: 36px; height: 36px;
            background: linear-gradient(135deg, var(--primary), var(--primary-deep));
            border-radius: 10px;
            display: flex; align-items: center; justify-content: center;
            font-size: 18px; color: #fff;
            box-shadow: 0 0 16px rgba(0,180,255,0.4);
            flex-shrink: 0;
        }
        .logo-text { font-size: 20px; font-weight: 700; color: var(--text-primary); letter-spacing: 0.02em; }
        .logo-text span { color: var(--primary); }
        .nav-links { display: flex; align-items: center; gap: 8px; list-style: none; }
        .nav-links li a {
            display: block; padding: 8px 16px;
            font-size: 15px; font-weight: 500;
            color: var(--text-secondary);
            position: relative; border-radius: 8px;
            transition: color var(--transition);
        }
        .nav-links li a::after {
            content: "";
            position: absolute;
            left: 16px; right: 16px; bottom: 2px;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left center;
            transition: transform var(--transition);
        }
        .nav-links li a:hover, .nav-links li a.active { color: var(--text-primary); }
        .nav-links li a:hover::after, .nav-links li a.active::after { transform: scaleX(1); }
        .nav-actions { display: flex; align-items: center; gap: 12px; }
        .btn {
            display: inline-flex; align-items: center; justify-content: center;
            border-radius: var(--radius-btn);
            font-size: 15px; font-weight: 500;
            padding: 10px 22px;
            border: none; cursor: pointer;
            transition: all var(--transition);
            text-align: center;
            line-height: 1.4;
            min-height: 44px;
        }
        .btn-primary {
            background: var(--gradient-main);
            color: #fff;
            box-shadow: 0 0 20px rgba(0,180,255,0.4);
        }
        .btn-primary:hover { box-shadow: 0 0 30px rgba(0,180,255,0.7); transform: translateY(-2px); color: #fff; }
        .btn-outline {
            background: transparent;
            border: 1px solid rgba(255,255,255,0.2);
            color: var(--text-primary);
        }
        .btn-outline:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-2px); }
        .btn-ghost {
            background: transparent;
            color: var(--text-secondary);
            padding: 8px 8px;
            font-size: 15px;
        }
        .btn-ghost i { transition: transform var(--transition); }
        .btn-ghost:hover { color: var(--primary); }
        .btn-ghost:hover i { transform: translateX(4px); }
        .btn:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; }

        .search-btn {
            width: 44px; height: 44px;
            background: rgba(255,255,255,0.06);
            border: 1px solid var(--border);
            border-radius: 50%;
            display: flex; align-items: center; justify-content: center;
            color: var(--text-secondary);
            cursor: pointer;
            transition: all var(--transition);
            font-size: 16px;
        }
        .search-btn:hover { border-color: var(--primary); color: var(--primary); }

        .mobile-toggle {
            display: none;
            width: 44px; height: 44px;
            background: rgba(255,255,255,0.06);
            border: 1px solid var(--border);
            border-radius: 10px;
            color: var(--text-primary);
            font-size: 18px;
            cursor: pointer;
            align-items: center; justify-content: center;
        }

        .mobile-menu {
            position: fixed;
            top: 0; right: 0; bottom: 0;
            width: min(320px, 85%);
            background: rgba(10,15,31,0.98);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            z-index: 100;
            padding: 100px 32px 32px;
            transform: translateX(100%);
            transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            display: flex;
            flex-direction: column;
            gap: 8px;
            border-left: 1px solid var(--border);
        }
        .mobile-menu.open { transform: translateX(0); }
        .mobile-menu a {
            display: flex; align-items: center;
            padding: 16px;
            font-size: 18px; font-weight: 500;
            color: var(--text-primary);
            border-radius: 12px;
            gap: 12px;
        }
        .mobile-menu a:hover, .mobile-menu a.active { background: rgba(0,180,255,0.1); color: var(--primary); }
        .mobile-menu .btn { margin-top: 16px; width: 100%; }
        .mobile-close {
            position: absolute; top: 24px; right: 24px;
            width: 44px; height: 44px;
            background: rgba(255,255,255,0.06);
            border: 1px solid var(--border);
            border-radius: 50%;
            color: var(--text-primary);
            cursor: pointer;
            display: flex; align-items: center; justify-content: center;
        }
        .menu-overlay {
            position: fixed; inset: 0;
            background: rgba(0,0,0,0.5);
            z-index: 90;
            opacity: 0; visibility: hidden;
            transition: opacity 0.3s;
        }
        .menu-overlay.open { opacity: 1; visibility: visible; }

        .hero {
            position: relative;
            padding: 160px 0 80px;
            min-height: 100vh;
            display: flex; align-items: center;
            background: url('/assets/images/backpic/back-1.png') center 30% / cover no-repeat;
        }
        .hero::before {
            content: "";
            position: absolute; inset: 0;
            background: linear-gradient(180deg, rgba(10,15,31,0.85) 0%, rgba(10,15,31,0.65) 40%, var(--bg) 100%);
            z-index: 1;
        }
        .hero::after {
            content: "";
            position: absolute; inset: 0;
            background-image: linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
            background-size: 40px 40px;
            z-index: 1;
        }
        .hero .container { position: relative; z-index: 2; }
        .hero-grid {
            display: grid;
            grid-template-columns: 1.05fr 0.95fr;
            gap: 48px;
            align-items: center;
        }
        .hero-content { max-width: 600px; }
        .hero-badge {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 6px 16px;
            background: rgba(0,255,198,0.1);
            border: 1px solid rgba(0,255,198,0.2);
            border-radius: 999px;
            font-size: 13px;
            color: var(--accent);
            margin-bottom: 20px;
        }
        .hero-title {
            font-size: 48px;
            font-weight: 700;
            line-height: 1.12;
            margin-bottom: 16px;
            color: var(--text-primary);
            letter-spacing: -0.02em;
        }
        .hero-title .gradient-text {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .hero-subtitle {
            font-size: 18px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 32px;
        }
        .hero-ctas { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 32px; }
        .hero-trust { display: flex; gap: 24px; flex-wrap: wrap; }
        .trust-item { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--text-secondary); }
        .trust-item i { color: var(--accent); font-size: 16px; }

        .phone-frame {
            width: min(300px, 80%);
            margin: 0 auto;
            aspect-ratio: 9/16;
            background: rgba(18,25,41,0.9);
            border: 1px solid rgba(255,255,255,0.12);
            border-radius: 36px;
            position: relative;
            overflow: hidden;
            box-shadow: 0 0 60px rgba(0,180,255,0.15), 0 20px 60px rgba(0,0,0,0.5);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            padding: 12px;
        }
        .phone-screen {
            width: 100%; height: 100%;
            border-radius: 26px;
            background: url('/assets/images/coverpic/cover-1.png') center/cover no-repeat;
            position: relative;
            overflow: hidden;
        }
        .phone-screen::before {
            content: "";
            position: absolute; inset: 0;
            background: linear-gradient(180deg, rgba(10,15,31,0.1) 0%, rgba(10,15,31,0.2) 50%, rgba(10,15,31,0.85) 100%);
        }
        .phone-status {
            position: absolute; top: 12px; left: 0; right: 0;
            display: flex; justify-content: space-between;
            padding: 0 20px;
            font-size: 12px; color: #fff; opacity: 0.9;
            z-index: 2;
        }
        .phone-play {
            position: absolute; top: 50%; left: 50%;
            transform: translate(-50%, -50%);
            width: 64px; height: 64px;
            background: rgba(255,255,255,0.2);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid rgba(255,255,255,0.3);
            border-radius: 50%;
            display: flex; align-items: center; justify-content: center;
            color: #fff; font-size: 22px;
            z-index: 2;
            animation: pulseRing 2.5s infinite;
        }
        .phone-data {
            position: absolute; bottom: 16px; left: 16px; right: 16px;
            z-index: 2;
            display: flex; justify-content: space-between;
            align-items: center;
        }
        .phone-data span { font-size: 13px; color: #fff; display: flex; align-items: center; gap: 4px; }

        .section { padding: 80px 0; position: relative; }
        .section-head {
            display: flex; align-items: center; gap: 12px;
            margin-bottom: 40px;
        }
        .section-head::before {
            content: "";
            width: 4px; height: 28px;
            background: linear-gradient(180deg, var(--primary), var(--accent));
            border-radius: 4px;
            box-shadow: 0 0 12px rgba(0,180,255,0.6);
        }
        .section-title { font-size: 28px; font-weight: 600; color: var(--text-primary); line-height: 1.2; }

        .stats-bar {
            background: rgba(18,25,41,0.6);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 32px 40px;
            display: flex;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
            box-shadow: var(--shadow);
            position: relative;
        }
        .stat-item { text-align: center; flex: 1; min-width: 140px; }
        .stat-number {
            font-size: 36px; font-weight: 700;
            color: var(--primary);
            text-shadow: 0 0 12px rgba(0,180,255,0.6);
            font-family: "Inter", "DIN", sans-serif;
        }
        .stat-label { font-size: 14px; color: var(--text-secondary); margin-top: 4px; }
        .scroll-hint {
            display: flex; align-items: center; justify-content: center;
            gap: 8px; margin-top: 32px;
            color: var(--text-muted); font-size: 14px;
            animation: floatY 2s ease-in-out infinite;
        }

        @keyframes floatY {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(6px); }
        }
        @keyframes pulseRing {
            0% { box-shadow: 0 0 0 0 rgba(0,180,255,0.5); }
            100% { box-shadow: 0 0 0 20px rgba(0,180,255,0); }
        }

        .featured-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 20px;
        }
        .feature-card {
            background: var(--bg-soft);
            border: 1px solid var(--border);
            border-radius: 16px;
            overflow: hidden;
            position: relative;
            transition: transform var(--transition), box-shadow var(--transition);
            aspect-ratio: 3/4;
            min-height: 280px;
            display: block;
            box-shadow: var(--shadow);
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .feature-card:hover .feature-img img { transform: scale(1.05); }
        .feature-card.large {
            grid-column: span 3;
            grid-row: span 2;
            aspect-ratio: auto;
        }
        .feature-card.small { grid-column: span 1.5; }
        .feature-card.small:nth-child(2) { grid-column: span 3; }
        .feature-card.small:nth-child(3) { grid-column: span 3; }

        .feature-img { position: absolute; inset: 0; overflow: hidden; }
        .feature-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
        .feature-img::after {
            content: "";
            position: absolute; inset: 0;
            background: linear-gradient(180deg, rgba(10,15,31,0) 30%, rgba(10,15,31,0.95) 100%);
        }
        .feature-badge {
            position: absolute; top: 12px; left: 12px;
            background: linear-gradient(135deg, #FF9F0A, #FF6A00);
            color: #fff;
            font-size: 12px; font-weight: 600;
            padding: 4px 10px;
            border-radius: 6px;
            z-index: 2;
            box-shadow: 0 4px 12px rgba(255,159,10,0.3);
        }
        .feature-badge.top { background: linear-gradient(135deg, var(--primary), var(--primary-deep)); box-shadow: 0 4px 12px rgba(0,180,255,0.3); }
        .feature-content {
            position: absolute; bottom: 0; left: 0; right: 0;
            padding: 20px;
            z-index: 2;
        }
        .feature-title {
            font-size: 18px; font-weight: 600;
            color: var(--text-primary);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 8px;
        }
        .feature-meta {
            display: flex; align-items: center;
            gap: 14px; font-size: 13px;
            color: rgba(255,255,255,0.7);
        }
        .feature-meta span { display: flex; align-items: center; gap: 4px; }

        .list-wrap {
            display: grid;
            grid-template-columns: 240px 1fr;
            gap: 32px;
        }
        .list-tabs { display: flex; flex-direction: column; gap: 4px; }
        .list-tab {
            display: flex; align-items: center; justify-content: space-between;
            padding: 16px;
            border-radius: 12px;
            color: var(--text-secondary);
            font-size: 15px;
            cursor: pointer;
            transition: all var(--transition);
            border: 1px solid transparent;
        }
        .list-tab:hover {
            color: var(--text-primary);
            background: rgba(255,255,255,0.04);
        }
        .list-tab.active {
            color: var(--primary);
            background: rgba(0,180,255,0.08);
            border-color: rgba(0,180,255,0.2);
            font-weight: 600;
        }
        .list-tab .badge {
            font-size: 12px;
            padding: 2px 8px;
            border-radius: 999px;
            background: rgba(0,180,255,0.15);
            color: var(--primary);
        }
        .list-items { display: flex; flex-direction: column; gap: 12px; }
        .list-item {
            display: flex; align-items: center; gap: 20px;
            padding: 16px;
            border-radius: 14px;
            border: 1px solid transparent;
            transition: all var(--transition);
            cursor: pointer;
            background: transparent;
        }
        .list-item:hover {
            background: rgba(18,25,41,0.65);
            border-color: var(--border);
            transform: translateX(4px);
            box-shadow: var(--shadow);
        }
        .list-item::before {
            content: "";
            position: absolute;
            left: 0; top: 50%;
            transform: translateY(-50%);
            width: 2px; height: 0;
            background: linear-gradient(180deg, var(--primary), var(--accent));
            border-radius: 2px;
            transition: height var(--transition);
        }
        .list-item:hover::before { height: 60%; }
        .list-num {
            font-family: "Inter", "DIN", sans-serif;
            font-size: 28px;
            font-weight: 700;
            color: rgba(0,180,255,0.3);
            min-width: 48px;
        }
        .list-thumb {
            width: 96px; height: 72px;
            border-radius: 10px;
            overflow: hidden;
            flex-shrink: 0;
        }
        .list-thumb img { width: 100%; height: 100%; object-fit: cover; }
        .list-info { flex: 1; min-width: 0; }
        .list-info h4 {
            font-size: 16px; font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .list-info p {
            font-size: 14px;
            color: var(--text-secondary);
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .list-arrow {
            width: 40px; height: 40px;
            border-radius: 50%;
            background: rgba(255,255,255,0.04);
            border: 1px solid var(--border);
            display: flex; align-items: center; justify-content: center;
            color: var(--text-secondary);
            font-size: 14px;
            flex-shrink: 0;
            transition: all var(--transition);
        }
        .list-item:hover .list-arrow { color: var(--primary); border-color: var(--primary); }

        .comments-scroll {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
            overflow-x: auto;
            scrollbar-width: thin;
            scrollbar-color: var(--primary) transparent;
        }
        .comments-scroll::-webkit-scrollbar { height: 4px; }
        .comments-scroll::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 4px; }
        .comments-scroll::-webkit-scrollbar-track { background: transparent; }
        .comment-card {
            background: rgba(18,25,41,0.65);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: 24px;
            box-shadow: var(--shadow);
            position: relative;
        }
        .comment-card:nth-child(2) { transform: translateY(12px); }
        .comment-card:nth-child(3) { transform: translateY(4px); }
        .comment-card:nth-child(4) { transform: translateY(-8px); }
        .comment-head { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
        .comment-avatar {
            width: 40px; height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: flex; align-items: center; justify-content: center;
            font-size: 16px; color: #fff;
            font-weight: 600;
        }
        .comment-name { font-size: 14px; font-weight: 600; color: var(--text-primary); }
        .comment-stars { color: var(--warning); font-size: 13px; margin-top: 2px; }
        .comment-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 16px;
        }
        .comment-meta { display: flex; align-items: center; gap: 16px; font-size: 13px; color: var(--text-muted); }
        .comment-badge {
            position: absolute; top: 16px; right: 16px;
            font-size: 12px;
            padding: 2px 8px;
            border-radius: 4px;
            background: rgba(0,255,198,0.12);
            color: var(--accent);
        }

        .news-card {
            background: rgba(18,25,41,0.6);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: 20px;
            display: flex;
            gap: 16px;
            transition: all var(--transition);
            box-shadow: var(--shadow);
        }
        .news-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); }
        .news-thumb {
            width: 120px; height: 80px;
            border-radius: 10px;
            overflow: hidden;
            flex-shrink: 0;
        }
        .news-thumb img { width: 100%; height: 100%; object-fit: cover; }
        .news-info { flex: 1; min-width: 0; }
        .news-title {
            font-size: 16px; font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 4px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-title:hover { color: var(--primary); }
        .news-desc {
            font-size: 14px;
            color: var(--text-secondary);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 8px;
            line-height: 1.5;
        }
        .news-meta {
            display: flex; align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .news-tag {
            display: inline-flex;
            padding: 2px 10px;
            border-radius: 999px;
            background: rgba(0,180,255,0.1);
            border: 1px solid rgba(0,180,255,0.2);
            color: var(--primary);
            font-size: 12px;
        }
        .empty-state {
            display: flex; flex-direction: column; align-items: center;
            justify-content: center;
            padding: 60px 24px;
            border: 2px dashed var(--border);
            border-radius: 20px;
            color: var(--text-muted);
            font-size: 16px;
            background: rgba(18,25,41,0.3);
        }
        .empty-state i {
            font-size: 40px;
            color: var(--text-muted);
            margin-bottom: 16px;
            opacity: 0.5;
        }

        .faq-list { max-width: 860px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item {
            background: rgba(18,25,41,0.65);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border);
            border-radius: 14px;
            overflow: hidden;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .faq-item.active { border-color: rgba(0,180,255,0.4); box-shadow: 0 0 24px rgba(0,180,255,0.08); }
        .faq-question {
            display: flex; align-items: center; justify-content: space-between;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 16px; font-weight: 600;
            color: var(--text-primary);
            -webkit-user-select: none;
            user-select: none;
        }
        .faq-icon {
            width: 28px; height: 28px;
            border-radius: 50%;
            background: rgba(0,255,198,0.1);
            border: 1px solid rgba(0,255,198,0.2);
            display: flex; align-items: center; justify-content: center;
            color: var(--accent);
            font-size: 16px;
            font-style: normal;
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-answer {
            display: grid;
            grid-template-rows: 0fr;
            transition: grid-template-rows 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .faq-answer-inner { overflow: hidden; }
        .faq-item.active .faq-answer { grid-template-rows: 1fr; }
        .faq-item.active .faq-icon { transform: rotate(45deg); }
        .faq-answer-inner p {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .cta-section {
            background: rgba(18,25,41,0.7);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border);
            border-radius: 24px;
            padding: 64px;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .cta-glow {
            position: absolute; top: -100px; right: -100px;
            width: 300px; height: 300px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0,255,198,0.2) 0%, transparent 70%);
            pointer-events: none;
        }
        .cta-glow::before {
            content: "";
            position: absolute; bottom: -80px; left: -100px;
            width: 250px; height: 250px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0,180,255,0.18) 0%, transparent 70%);
        }
        .cta-inner { position: relative; z-index: 2; text-align: center; }
        .cta-title { font-size: 32px; font-weight: 700; color: var(--text-primary); margin-bottom: 12px; }
        .cta-title span { background: linear-gradient(135deg, var(--primary), var(--accent)); -webkit-background-clip: text; background-clip: text; color: transparent; }
        .cta-actions {
            display: flex; gap: 16px;
            justify-content: center; align-items: center;
            flex-wrap: wrap;
        }
        .btn-breathe {
            animation: breatheGlow 2.5s ease-in-out infinite;
        }
        @keyframes breatheGlow {
            0%, 100% { box-shadow: 0 0 20px rgba(0,180,255,0.35); }
            50% { box-shadow: 0 0 40px rgba(0,180,255,0.65); }
        }
        .cta-privacy { font-size: 13px; color: var(--text-muted); margin-top: 12px; }

        .footer {
            background: #070C18;
            border-top: 1px solid rgba(255,255,255,0.06);
            padding: 60px 0 24px;
            margin-top: 80px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo-text { font-size: 22px; }
        .footer-brand p {
            margin-top: 16px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-title { font-size: 14px; font-weight: 600; color: var(--text-primary); margin-bottom: 16px; }
        .footer-links { list-style: none; display: flex; flex-direction: column; gap: 8px; }
        .footer-links a { color: var(--text-muted); font-size: 14px; line-height: 1.6; }
        .footer-links a:hover { color: var(--primary); }
        .footer-contact { color: var(--text-muted); font-size: 14px; display: flex; flex-direction: column; gap: 12px; }
        .footer-contact i { color: var(--primary); width: 16px; margin-right: 4px; }
        .footer-copyright {
            border-top: 1px solid rgba(255,255,255,0.06);
            padding-top: 20px;
            display: flex; justify-content: space-between; align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-copyright a { color: var(--text-muted); }
        .footer-copyright a:hover { color: var(--primary); }

        .breadcrumb {
            display: flex; align-items: center; gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .breadcrumb a { color: var(--text-muted); }
        .breadcrumb a:hover { color: var(--primary); }
        .breadcrumb span { color: var(--text-secondary); }

        @media (max-width: 1024px) {
            .hero-grid { gap: 32px; }
            .hero-title { font-size: 38px; }
            .hero { padding-top: 140px; }
            .featured-grid { grid-template-columns: repeat(4, 1fr); }
            .feature-card.large { grid-column: span 4; }
            .feature-card.small { grid-column: span 2 !important; }
            .list-wrap { grid-template-columns: 200px 1fr; }
            .comments-scroll { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }

        @media (max-width: 640px) {
            .container { padding: 0 16px; }
            .nav-links, .nav-actions .btn { display: none; }
            .mobile-toggle { display: flex; }
            .hero { padding: 120px 0 48px; min-height: auto; }
            .hero-grid { grid-template-columns: 1fr; }
            .hero-content { text-align: center; }
            .hero-title { font-size: 32px; }
            .hero-subtitle { font-size: 16px; }
            .hero-trust { justify-content: center; gap: 16px; }
            .phone-frame { margin-top: 32px; }
            .section { padding: 48px 0; }
            .section-title { font-size: 24px; }
            .featured-grid { grid-template-columns: 1fr; gap: 12px; }
            .feature-card.large { grid-column: span 1; }
            .feature-card.small { grid-column: span 1 !important; }
            .feature-card { min-height: 360px; }
            .list-wrap { grid-template-columns: 1fr; gap: 20px; }
            .list-tabs { flex-direction: row; overflow-x: auto; padding-bottom: 12px; gap: 8px; }
            .list-tab { flex-shrink: 0; white-space: nowrap; }
            .list-item { flex-wrap: wrap; gap: 12px; }
            .list-num { min-width: 36px; font-size: 22px; }
            .list-thumb { width: 72px; height: 56px; }
            .news-card { flex-direction: column; }
            .news-thumb { width: 100%; height: 120px; }
            .comments-scroll { grid-template-columns: 1fr; }
            .stats-bar { padding: 24px 16px; gap: 16px; }
            .stat-number { font-size: 28px; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-copyright { flex-direction: column; text-align: center; }
            .search-btn { display: none; }
            .cta-section { padding: 32px 24px; }
            .cta-title { font-size: 24px; }
        }

        @media (max-width: 480px) {
            .hero-title { font-size: 28px; }
            .btn { width: 100%; }
            .hero-ctas { flex-direction: column; }
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #00B4FF;
            --primary-deep: #0077FF;
            --bg: #0A0F1F;
            --bg-soft: #121929;
            --accent: #00FFC6;
            --warning: #FF9F0A;
            --text-primary: #F5F9FF;
            --text-secondary: #A0B0C3;
            --text-muted: #66788F;
            --border: rgba(255, 255, 255, 0.08);
            --radius: 14px;
            --radius-lg: 20px;
            --shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-primary: 0 0 20px rgba(0, 180, 255, 0.4);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --glass: rgba(18, 25, 41, 0.65);
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "HarmonyOS Sans SC", "Noto Sans SC", sans-serif;
            font-size: 16px;
            line-height: 1.75;
            background: var(--bg);
            color: var(--text-primary);
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input {
            font-family: inherit;
            font-size: inherit;
            border: none;
            background: none;
            color: inherit;
            outline: none;
        }
        ul,
        ol {
            list-style: none;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        section {
            position: relative;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border: none;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            border-radius: 999px;
            padding: 12px 32px;
            transition: all var(--transition);
            text-decoration: none;
            line-height: 1.4;
        }
        .btn-primary {
            background: linear-gradient(135deg, #0099FF, #0070FF);
            color: #fff;
            box-shadow: 0 0 20px rgba(0, 180, 255, 0.4);
        }
        .btn-primary:hover {
            box-shadow: 0 0 32px rgba(0, 180, 255, 0.7);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: var(--text-primary);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        .btn:focus-visible,
        button:focus-visible,
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 8px;
        }

        /* ===== Header / Nav ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            height: 72px;
            background: rgba(10, 15, 31, 0.3);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: background var(--transition), box-shadow var(--transition);
        }
        .header.scrolled {
            background: rgba(10, 15, 31, 0.92);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
        }
        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .logo-area {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--primary-deep));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #fff;
            box-shadow: 0 0 16px rgba(0, 180, 255, 0.5);
        }
        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.5px;
        }
        .logo-text span {
            color: var(--primary);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-links a {
            display: inline-block;
            padding: 8px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 8px;
            position: relative;
            transition: color var(--transition);
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            left: 50%;
            bottom: 0;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 2px;
            transition: width var(--transition);
        }
        .nav-links a:hover {
            color: var(--primary);
        }
        .nav-links a:hover::after {
            width: 60%;
        }
        .nav-links a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-links a.active::after {
            width: 60%;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .search-btn {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.06);
            transition: all var(--transition);
            cursor: pointer;
        }
        .search-btn:hover {
            color: var(--primary);
            background: rgba(0, 180, 255, 0.15);
        }
        .mobile-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-primary);
            font-size: 18px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: background var(--transition);
        }
        .mobile-toggle:hover {
            background: rgba(0, 180, 255, 0.2);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
        }
        .breadcrumb a {
            color: var(--text-secondary);
            transition: color var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .sep {
            color: var(--text-muted);
            margin: 0 4px;
        }
        .breadcrumb .current {
            color: var(--text-primary);
            max-width: 280px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        /* ===== Article Hero ===== */
        .article-hero {
            padding: 140px 0 48px;
            background:
                linear-gradient(rgba(10, 15, 31, 0.88), rgba(10, 15, 31, 0.95)),
                url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            border-bottom: 1px solid var(--border);
        }
        .article-category {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(0, 180, 255, 0.12);
            border: 1px solid rgba(0, 180, 255, 0.3);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 999px;
            margin-bottom: 16px;
        }
        .article-hero h1 {
            font-size: 32px;
            line-height: 1.3;
            font-weight: 700;
            margin-bottom: 20px;
            max-width: 860px;
            text-wrap: balance;
            color: var(--text-primary);
        }
        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 14px;
            color: var(--text-muted);
        }
        .article-meta .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta .meta-item i {
            color: var(--primary);
            font-size: 13px;
        }

        /* ===== Article Body ===== */
        .article-body {
            padding: 48px 0 24px;
        }
        .article-content-wrap {
            max-width: 860px;
            margin: 0 auto;
        }
        .article-content {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-primary);
            max-width: 760px;
            margin: 0 auto;
        }
        .article-content p {
            margin-bottom: 1.5em;
            text-align: justify;
            color: rgba(245, 249, 255, 0.92);
        }
        .article-content h2 {
            font-size: 26px;
            font-weight: 700;
            margin: 1.8em 0 0.8em;
            color: var(--text-primary);
            line-height: 1.3;
        }
        .article-content h3 {
            font-size: 20px;
            font-weight: 600;
            margin: 1.4em 0 0.6em;
            color: var(--text-primary);
            line-height: 1.4;
        }
        .article-content h4 {
            font-size: 18px;
            font-weight: 600;
            margin: 1.2em 0 0.5em;
            color: var(--text-primary);
        }
        .article-content img {
            max-width: 100%;
            border-radius: var(--radius);
            margin: 1.5em auto;
            box-shadow: var(--shadow);
        }
        .article-content figure {
            margin: 1.5em 0;
        }
        .article-content figcaption {
            font-size: 13px;
            color: var(--text-muted);
            text-align: center;
            margin-top: 8px;
        }
        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: rgba(0, 180, 255, 0.08);
            padding: 16px 20px;
            margin: 1.5em 0;
            border-radius: 0 10px 10px 0;
            color: var(--text-secondary);
            font-style: normal;
        }
        .article-content ul {
            list-style: disc;
            padding-left: 1.5em;
            margin: 1em 0 1.5em;
        }
        .article-content ol {
            list-style: decimal;
            padding-left: 1.5em;
            margin: 1em 0 1.5em;
        }
        .article-content li {
            margin-bottom: 0.6em;
            color: rgba(245, 249, 255, 0.88);
        }
        .article-content a {
            color: var(--primary);
            border-bottom: 1px solid rgba(0, 180, 255, 0.3);
            transition: border-color var(--transition);
        }
        .article-content a:hover {
            border-bottom-color: var(--primary);
        }
        .article-content strong {
            color: var(--text-primary);
            font-weight: 700;
        }
        .article-content .content-img {
            border-radius: var(--radius);
            overflow: hidden;
        }

        /* ===== Article Empty ===== */
        .article-empty {
            text-align: center;
            padding: 80px 20px;
            background: var(--glass);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            backdrop-filter: blur(12px);
        }
        .article-empty i {
            font-size: 56px;
            color: var(--text-muted);
            display: block;
            margin-bottom: 20px;
        }
        .article-empty p {
            font-size: 18px;
            color: var(--text-secondary);
            margin-bottom: 24px;
        }

        /* ===== Article Footer Meta ===== */
        .article-footer-meta {
            padding: 32px 0;
        }
        .article-footer-meta .inner {
            max-width: 760px;
            margin: 0 auto;
            border-top: 1px solid var(--border);
            padding-top: 28px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 20px;
        }
        .article-tags {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag {
            display: inline-flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            padding: 4px 14px;
            border-radius: 999px;
            font-size: 13px;
            color: var(--text-secondary);
            transition: all var(--transition);
        }
        .tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(0, 180, 255, 0.1);
        }
        .share-box {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .share-box span {
            font-size: 14px;
            color: var(--text-muted);
        }
        .share-btn {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--text-secondary);
            font-size: 14px;
            transition: all var(--transition);
        }
        .share-btn:hover {
            background: rgba(0, 180, 255, 0.15);
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-3px);
        }

        /* ===== Post Pagination ===== */
        .post-pagination {
            padding: 24px 0 48px;
        }
        .post-pagination .inner {
            max-width: 760px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }
        .post-pager {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 18px 22px;
            background: var(--glass);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            transition: all var(--transition);
            text-decoration: none;
        }
        .post-pager:hover {
            border-color: rgba(0, 180, 255, 0.4);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
            transform: translateY(-2px);
        }
        .post-pager.pager-next {
            justify-content: flex-end;
            text-align: right;
        }
        .pager-arrow {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(0, 180, 255, 0.12);
            border: 1px solid rgba(0, 180, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 14px;
            flex-shrink: 0;
            transition: all var(--transition);
        }
        .post-pager:hover .pager-arrow {
            background: var(--primary);
            color: #fff;
        }
        .pager-text {
            display: flex;
            flex-direction: column;
            gap: 2px;
            min-width: 0;
        }
        .pager-label {
            font-size: 13px;
            color: var(--text-muted);
        }
        .pager-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        /* ===== Related Section ===== */
        .related-section {
            padding: 56px 0;
            border-top: 1px solid var(--border);
            background: rgba(18, 25, 41, 0.3);
        }
        .related-section .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 32px;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .related-section .section-title::before {
            content: '';
            width: 3px;
            height: 24px;
            background: linear-gradient(180deg, var(--primary), var(--accent));
            border-radius: 3px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--glass);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: all var(--transition);
            text-decoration: none;
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            border-color: rgba(0, 180, 255, 0.4);
            box-shadow: 0 12px 40px rgba(0, 180, 255, 0.1);
            transform: translateY(-4px);
        }
        .related-cover {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--bg-soft);
        }
        .related-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .related-card:hover .related-cover img {
            transform: scale(1.06);
        }
        .related-cover::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 15, 31, 0) 55%, rgba(10, 15, 31, 0.75) 100%);
        }
        .related-info {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 16px 4px;
        }
        .related-tag {
            font-size: 12px;
            font-weight: 600;
            background: rgba(0, 180, 255, 0.15);
            color: var(--primary);
            padding: 2px 10px;
            border-radius: 999px;
        }
        .related-info time {
            font-size: 13px;
            color: var(--text-muted);
        }
        .related-card h3 {
            font-size: 16px;
            font-weight: 600;
            line-height: 1.4;
            color: var(--text-primary);
            padding: 10px 16px 18px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 56px 0;
        }
        .cta-card {
            position: relative;
            background:
                linear-gradient(135deg, rgba(0, 119, 255, 0.25), rgba(0, 180, 255, 0.08)),
                url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            border: 1px solid rgba(0, 180, 255, 0.2);
            border-radius: 24px;
            padding: 56px 48px;
            text-align: center;
            overflow: hidden;
        }
        .cta-card::before {
            content: '';
            position: absolute;
            top: -50%;
            left: 50%;
            transform: translateX(-50%);
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(0, 180, 255, 0.25), transparent 70%);
            pointer-events: none;
        }
        .cta-card h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            position: relative;
        }
        .cta-card p {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 28px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
            position: relative;
        }
        .cta-card .btn {
            position: relative;
            animation: pulse-glow 2.5s ease-in-out infinite;
        }
        @keyframes pulse-glow {
            0%,
            100% {
                box-shadow: 0 0 18px rgba(0, 180, 255, 0.4);
            }
            50% {
                box-shadow: 0 0 32px rgba(0, 180, 255, 0.75);
            }
        }

        /* ===== Footer ===== */
        .footer {
            background: #070C18;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 56px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
        }
        .footer-brand .logo-text {
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 300px;
        }
        .footer-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 16px;
        }
        .footer-links li {
            margin-bottom: 8px;
        }
        .footer-links a {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
            transition: color var(--transition);
        }
        .footer-links a:hover {
            color: var(--primary);
        }
        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-contact span {
            font-size: 14px;
            color: var(--text-muted);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .footer-contact i {
            color: var(--primary);
            font-size: 13px;
        }
        .footer-copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 12px;
            color: var(--text-muted);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                flex-direction: column;
                background: rgba(10, 15, 31, 0.98);
                backdrop-filter: blur(20px);
                padding: 20px 24px;
                border-bottom: 1px solid var(--border);
                gap: 6px;
                z-index: 999;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                width: 100%;
                padding: 14px 16px;
                font-size: 16px;
            }
            .nav-links a.active {
                background: rgba(0, 180, 255, 0.1);
            }
            .mobile-toggle {
                display: inline-flex;
            }
            .nav-actions .btn-primary {
                display: none;
            }
            .article-hero {
                padding: 120px 0 36px;
            }
            .article-hero h1 {
                font-size: 26px;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .cta-card {
                padding: 40px 24px;
            }
            .cta-card h2 {
                font-size: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .post-pagination .inner {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .article-hero h1 {
                font-size: 22px;
            }
            .article-content {
                font-size: 15px;
            }
            .article-content p {
                line-height: 1.75;
            }
            .article-meta {
                gap: 12px;
                font-size: 13px;
            }
            .related-section .section-title {
                font-size: 22px;
            }
            .footer-copyright {
                flex-direction: column;
                text-align: center;
            }
            .tag {
                font-size: 12px;
                padding: 3px 10px;
            }
            .share-btn {
                width: 32px;
                height: 32px;
                font-size: 13px;
            }
            .pager-title {
                font-size: 14px;
            }
        }

/* roulang page: category1 */
:root {
  --primary: #00B4FF;
  --primary-deep: #0077FF;
  --accent: #00FFC6;
  --warning: #FF9F0A;
  --bg: #0A0F1F;
  --bg-soft: #121929;
  --text-primary: #F5F9FF;
  --text-secondary: #A0B0C3;
  --text-muted: #66788F;
  --border: rgba(255, 255, 255, 0.08);
  --radius: 14px;
  --radius-btn: 999px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
  --shadow-hover: 0 12px 40px rgba(0, 180, 255, 0.15);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: "PingFang SC", "Microsoft YaHei", "HarmonyOS Sans SC", "Noto Sans SC", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  background: var(--bg);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}
ul,
ol {
  list-style: none;
}
button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  outline: none;
}
input {
  font-family: inherit;
  outline: none;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.section {
  padding: 96px 0;
}
.section-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 48px;
}
.section-head::before {
  content: "";
  width: 3px;
  height: 26px;
  border-radius: 2px;
  background: var(--primary);
  box-shadow: 0 0 12px rgba(0, 180, 255, 0.6);
}
.section-head h2 {
  font-size: 28px;
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-wrap: balance;
}
.section-head .sub {
  font-size: 14px;
  color: var(--text-secondary);
  margin-left: auto;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-btn);
  padding: 12px 32px;
  transition: all var(--transition);
  cursor: pointer;
  border: none;
  line-height: 1.4;
}
.btn i {
  font-size: 14px;
}
.btn-primary {
  background: linear-gradient(135deg, #0099FF, #0070FF);
  color: #fff;
  box-shadow: 0 0 20px rgba(0, 180, 255, 0.4);
}
.btn-primary:hover {
  box-shadow: 0 0 30px rgba(0, 180, 255, 0.7);
  transform: translateY(-2px);
}
.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 0 15px rgba(0, 180, 255, 0.5);
}
.btn-outline {
  border: 1px solid rgba(255, 255, 255, 0.35);
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.03);
}
.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(0, 180, 255, 0.06);
  transform: translateY(-2px);
}
.btn-ghost {
  padding: 8px 0;
  color: var(--primary);
  font-weight: 600;
}
.btn-ghost i {
  transition: transform var(--transition);
}
.btn-ghost:hover i {
  transform: translateX(4px);
}
.btn:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(255, 159, 10, 0.15);
  color: var(--warning);
  border: 1px solid rgba(255, 159, 10, 0.25);
}
.badge-hot {
  background: linear-gradient(135deg, #FF9F0A, #FF6A00);
  color: #fff;
  border: none;
  font-weight: 600;
}
.text-glow {
  text-shadow: 0 0 12px rgba(0, 180, 255, 0.6);
}
.gradient-text {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: 72px;
  background: rgba(10, 15, 31, 0.3);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  transition: all var(--transition);
}
.header.scrolled {
  background: rgba(10, 15, 31, 0.92);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}
.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}
.logo-area {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--primary-deep));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: #fff;
  box-shadow: 0 0 14px rgba(0, 180, 255, 0.4);
}
.logo-text {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: var(--text-primary);
  line-height: 1.2;
}
.logo-text span {
  color: var(--primary);
  font-size: 16px;
  font-weight: 500;
  margin-left: 2px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-links a {
  position: relative;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 8px 2px;
  transition: color var(--transition);
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 2px;
  transition: width var(--transition);
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
}
.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}
.nav-links a.active {
  color: var(--primary);
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.search-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
  transition: all var(--transition);
  font-size: 15px;
}
.search-btn:hover {
  color: var(--primary);
  border-color: var(--primary);
  box-shadow: 0 0 12px rgba(0, 180, 255, 0.3);
}
.mobile-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border);
  font-size: 18px;
  align-items: center;
  justify-content: center;
}
.search-overlay {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  z-index: 999;
  background: rgba(10, 15, 31, 0.95);
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
  backdrop-filter: blur(18px);
}
.search-overlay.active {
  display: block;
}
.search-box {
  display: flex;
  gap: 10px;
}
.search-box input {
  flex: 1;
  height: 46px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 0 18px;
  color: var(--text-primary);
  font-size: 15px;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.search-box input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 16px rgba(0, 180, 255, 0.2);
}
.search-box input::placeholder {
  color: var(--text-muted);
}
.search-box button {
  height: 46px;
  padding: 0 22px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-deep));
  color: #fff;
  font-weight: 600;
  box-shadow: 0 0 16px rgba(0, 180, 255, 0.35);
}
.hero-cat {
  position: relative;
  padding: 160px 0 80px;
  background:
    linear-gradient(135deg, rgba(10, 15, 31, 0.88) 0%, rgba(10, 15, 31, 0.72) 50%, rgba(10, 15, 31, 0.9) 100%),
    url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  border-bottom: 1px solid var(--border);
}
.hero-cat::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(0, 180, 255, 0.16) 0%, transparent 70%);
  pointer-events: none;
}
.hero-cat::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 180, 255, 0.3), transparent);
}
.hero-cat .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 20px;
}
.hero-cat .breadcrumb a:hover {
  color: var(--primary);
}
.hero-cat .breadcrumb i {
  font-size: 10px;
  color: var(--text-muted);
}
.hero-cat-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 60px;
  align-items: center;
}
.hero-cat h1 {
  font-size: 48px;
  line-height: 1.12;
  font-weight: 800;
  margin-bottom: 18px;
  letter-spacing: 1px;
  text-wrap: balance;
}
.hero-cat .hero-desc {
  font-size: 17px;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 500px;
  margin-bottom: 28px;
}
.hero-cat .hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.hero-trust {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}
.hero-trust span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--text-secondary);
}
.hero-trust span i {
  color: var(--accent);
  font-size: 15px;
}
.hero-visual {
  position: relative;
}
.hero-phone {
  position: relative;
  max-width: 240px;
  margin: 0 auto;
  aspect-ratio: 9 / 16;
  border-radius: 28px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: var(--bg-soft);
  box-shadow:
    0 24px 60px rgba(0, 0, 0, 0.5),
    0 0 40px rgba(0, 180, 255, 0.08);
  overflow: hidden;
  transform: rotate(2deg);
}
.hero-phone .phone-status {
  height: 28px;
  background: rgba(0, 0, 0, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  color: rgba(255, 255, 255, 0.6);
  position: relative;
  z-index: 2;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}
.hero-phone .phone-cover {
  position: absolute;
  inset: 28px 0 0;
  background: url('/assets/images/coverpic/cover-1.png') center center / cover no-repeat;
}
.hero-phone .phone-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10, 15, 31, 0.1) 50%, rgba(10, 15, 31, 0.92) 100%);
}
.hero-phone .phone-play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(0, 180, 255, 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 20px;
  box-shadow: 0 0 24px rgba(0, 180, 255, 0.6);
  z-index: 2;
  animation: pulse 2s ease-in-out infinite;
}
.hero-phone .phone-info {
  position: absolute;
  bottom: 20px;
  left: 20px;
  right: 20px;
  z-index: 2;
}
.hero-phone .phone-info h4 {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 8px;
}
.hero-phone .phone-stats {
  display: flex;
  gap: 12px;
  font-size: 12px;
  color: var(--text-secondary);
}
.hero-phone .phone-stats i {
  margin-right: 3px;
  color: var(--accent);
}
@keyframes pulse {
  0% {
    box-shadow: 0 0 18px rgba(0, 180, 255, 0.4);
  }
  50% {
    box-shadow: 0 0 36px rgba(0, 180, 255, 0.8);
  }
  100% {
    box-shadow: 0 0 18px rgba(0, 180, 255, 0.4);
  }
}
@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
  }
}
.stats-bar {
  margin-top: 64px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.stat-item {
  background: rgba(18, 25, 41, 0.65);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  transition: all var(--transition);
}
.stat-item:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 180, 255, 0.3);
  box-shadow: var(--shadow-hover);
}
.stat-item .num {
  font-size: 32px;
  font-weight: 800;
  color: var(--primary);
  text-shadow: 0 0 12px rgba(0, 180, 255, 0.6);
  line-height: 1.2;
  font-family: "Inter", "DIN", "PingFang SC", sans-serif;
}
.stat-item .label {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 6px;
}
.features {
  position: relative;
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.feature-card {
  background: rgba(18, 25, 41, 0.6);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 24px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(0, 180, 255, 0.25);
}
.feature-card:hover::before {
  opacity: 1;
}
.feature-card .icon-wrap {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: rgba(0, 180, 255, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: var(--primary);
  margin-bottom: 20px;
  transition: all var(--transition);
}
.feature-card:hover .icon-wrap {
  background: linear-gradient(135deg, var(--primary), var(--primary-deep));
  color: #fff;
  box-shadow: 0 0 20px rgba(0, 180, 255, 0.4);
}
.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}
.feature-card p {
  font-size: 14px;
  line-height: 1.65;
  color: var(--text-secondary);
}
.scenes {
  background: rgba(18, 25, 41, 0.3);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.scene-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.scene-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 3 / 4;
  border: 1px solid var(--border);
  transition: all var(--transition);
  background: var(--bg-soft);
}
.scene-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.scene-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10, 15, 31, 0.1) 30%, rgba(10, 15, 31, 0.94) 100%);
  transition: background 0.3s ease;
}
.scene-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 44px rgba(0, 180, 255, 0.16);
  border-color: rgba(0, 180, 255, 0.3);
}
.scene-card:hover img {
  transform: scale(1.06);
}
.scene-card .scene-info {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 24px;
  z-index: 2;
}
.scene-card .scene-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  background: rgba(0, 255, 198, 0.1);
  border: 1px solid rgba(0, 255, 198, 0.2);
  padding: 3px 10px;
  border-radius: 6px;
  margin-bottom: 10px;
}
.scene-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 6px;
}
.scene-card p {
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-secondary);
}
.featured {
  position: relative;
}
.featured-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.f-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 3 / 4;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  transition: all var(--transition);
  cursor: pointer;
}
.f-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.f-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10, 15, 31, 0) 40%, rgba(10, 15, 31, 0.92) 100%);
}
.f-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 44px rgba(0, 180, 255, 0.18);
  border-color: rgba(0, 180, 255, 0.3);
}
.f-card:hover img {
  transform: scale(1.06);
}
.f-card .f-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 3;
  font-size: 12px;
  font-weight: 700;
  padding: 5px 12px;
  border-radius: 6px;
  background: linear-gradient(135deg, #FF9F0A, #FF6A00);
  color: #fff;
  box-shadow: 0 4px 14px rgba(255, 106, 0, 0.4);
}
.f-card .f-info {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 20px;
  z-index: 2;
}
.f-card .f-info h3 {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.f-card .f-meta {
  display: flex;
  gap: 14px;
  font-size: 12px;
  color: var(--text-secondary);
}
.f-card .f-meta i {
  color: var(--accent);
  margin-right: 3px;
}
.steps {
  background: rgba(18, 25, 41, 0.25);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.step-item {
  position: relative;
  text-align: center;
  padding: 0 12px;
}
.step-num {
  width: 56px;
  height: 56px;
  margin: 0 auto 18px;
  border-radius: 50%;
  background: rgba(0, 180, 255, 0.1);
  border: 1px solid rgba(0, 180, 255, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 800;
  color: var(--primary);
  font-family: "Inter", "DIN", sans-serif;
  box-shadow: 0 0 18px rgba(0, 180, 255, 0.15);
  transition: all var(--transition);
}
.step-item:hover .step-num {
  background: linear-gradient(135deg, var(--primary), var(--primary-deep));
  color: #fff;
  box-shadow: 0 0 26px rgba(0, 180, 255, 0.5);
}
.step-item h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}
.step-item p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}
.faq {
  position: relative;
}
.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: grid;
  gap: 12px;
}
.faq-item {
  background: rgba(18, 25, 41, 0.6);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.faq-item.active {
  border-color: rgba(0, 180, 255, 0.35);
  box-shadow: 0 8px 28px rgba(0, 180, 255, 0.08);
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 20px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  width: 100%;
  text-align: left;
  color: var(--text-primary);
  background: none;
  border: none;
}
.faq-toggle {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: rgba(0, 180, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 18px;
  flex-shrink: 0;
  transition: transform 0.35s ease, background 0.3s ease;
}
.faq-item.active .faq-toggle {
  transform: rotate(45deg);
  background: var(--primary);
  color: #fff;
}
.faq-answer {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}
.faq-item.active .faq-answer {
  grid-template-rows: 1fr;
}
.faq-answer-inner {
  overflow: hidden;
  padding: 0 20px;
}
.faq-item.active .faq-answer-inner {
  padding: 0 20px 18px;
}
.faq-answer-inner p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
}
.cta-section {
  position: relative;
  padding: 80px 0;
}
.cta-card {
  position: relative;
  background:
    linear-gradient(135deg, rgba(0, 180, 255, 0.12) 0%, rgba(10, 15, 31, 0.85) 60%),
    url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  border: 1px solid rgba(0, 180, 255, 0.25);
  border-radius: 20px;
  padding: 72px 48px;
  text-align: center;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}
.cta-card::before {
  content: "";
  position: absolute;
  top: -60px;
  right: -60px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 255, 198, 0.2) 0%, transparent 70%);
  pointer-events: none;
}
.cta-card h2 {
  font-size: 34px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 14px;
}
.cta-card p {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto 32px;
  line-height: 1.7;
}
.cta-card .cta-btns {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}
.footer {
  background: #070C18;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
}
.footer-brand .logo-text {
  margin-bottom: 16px;
  font-size: 22px;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 360px;
}
.footer-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}
.footer-links li a {
  font-size: 14px;
  line-height: 2.1;
  color: var(--text-secondary);
  transition: color var(--transition);
}
.footer-links li a:hover {
  color: var(--primary);
}
.footer-contact span {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 10px;
}
.footer-contact i {
  color: var(--primary);
  width: 18px;
  text-align: center;
}
.footer-copyright {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 12px;
  color: var(--text-muted);
}
@media (max-width: 1024px) {
  .hero-cat-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero-cat {
    padding: 120px 0 60px;
  }
  .hero-visual {
    order: -1;
    max-width: 300px;
    margin: 0 auto;
  }
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .scene-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .featured-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px 16px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .nav-links {
    display: none;
  }
  .nav-links.open {
    display: flex;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(10, 15, 31, 0.97);
    backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: flex-start;
    padding: 24px;
    gap: 8px;
    border-bottom: 1px solid var(--border);
    z-index: 999;
  }
  .nav-links.open a {
    display: block;
    width: 100%;
    padding: 14px 4px;
    font-size: 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  }
  .mobile-toggle {
    display: flex;
  }
}
@media (max-width: 640px) {
  .container {
    padding: 0 16px;
  }
  .section {
    padding: 64px 0;
  }
  .section-head h2 {
    font-size: 24px;
  }
  .hero-cat {
    padding: 100px 0 48px;
  }
  .hero-cat h1 {
    font-size: 32px;
  }
  .hero-cat .hero-desc {
    font-size: 15px;
  }
  .hero-cat .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .hero-cat .hero-actions .btn {
    width: 100%;
  }
  .hero-trust {
    gap: 12px;
    justify-content: space-between;
  }
  .hero-phone {
    transform: none;
    max-width: 200px;
  }
  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin-top: 40px;
  }
  .stat-item {
    padding: 16px;
  }
  .stat-item .num {
    font-size: 24px;
  }
  .feature-grid {
    grid-template-columns: 1fr;
  }
  .scene-grid {
    grid-template-columns: 1fr;
  }
  .featured-grid {
    grid-template-columns: 1fr;
  }
  .steps-grid {
    grid-template-columns: 1fr;
  }
  .cta-card {
    padding: 48px 20px;
  }
  .cta-card h2 {
    font-size: 26px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-copyright {
    flex-direction: column;
    gap: 8px;
    padding: 16px 0;
  }
  .nav-actions .btn-primary {
    display: none;
  }
}

/* roulang page: category2 */
:root {
            --primary: #00B4FF;
            --primary-deep: #0077FF;
            --accent: #00FFC6;
            --warning: #FF9F0A;
            --bg: #0A0F1F;
            --bg-soft: #121929;
            --text-primary: #F5F9FF;
            --text-secondary: #A0B0C3;
            --text-muted: #66788F;
            --border: rgba(255, 255, 255, 0.08);
            --border-light: rgba(255, 255, 255, 0.06);
            --radius-lg: 14px;
            --radius-md: 12px;
            --radius-full: 999px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 12px 40px rgba(0, 180, 255, 0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --container: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "HarmonyOS Sans SC", "Noto Sans SC", sans-serif;
            font-size: 16px;
            line-height: 1.6;
            background: var(--bg);
            color: var(--text-primary);
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

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

        button {
            font-family: inherit;
            border: none;
            background: none;
            cursor: pointer;
            color: inherit;
        }

        input {
            font-family: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 72px;
            display: flex;
            align-items: center;
            background: rgba(10, 15, 31, 0.35);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border-light);
            z-index: 1000;
            transition: background var(--transition), box-shadow var(--transition);
        }

        .header.scrolled {
            background: rgba(10, 15, 31, 0.92);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
        }

        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            height: 72px;
        }

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

        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--primary-deep));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: #fff;
            box-shadow: 0 0 18px rgba(0, 180, 255, 0.5);
        }

        .logo-text {
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .logo-text span {
            color: var(--primary);
            font-weight: 500;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            margin: 0;
        }

        .nav-links li {
            margin: 0;
        }

        .nav-links a {
            position: relative;
            display: inline-block;
            padding: 10px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 8px;
            white-space: nowrap;
            transition: color var(--transition);
        }

        .nav-links a::after {
            content: "";
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 4px;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            transform: scaleX(0);
            transform-origin: left;
            transition: transform var(--transition);
        }

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

        .nav-links a:hover::after,
        .nav-links a.active::after {
            transform: scaleX(1);
        }

        .nav-links a.active {
            color: var(--primary);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .search-btn {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border);
            color: var(--text-secondary);
            font-size: 15px;
            transition: all var(--transition);
        }

        .search-btn:hover {
            color: var(--primary);
            border-color: rgba(0, 180, 255, 0.4);
            box-shadow: 0 0 12px rgba(0, 180, 255, 0.2);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-full);
            font-size: 15px;
            font-weight: 600;
            line-height: 1;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, #0099FF, #0070FF);
            color: #fff;
            padding: 12px 28px;
            box-shadow: 0 0 20px rgba(0, 180, 255, 0.4);
        }

        .btn-primary:hover {
            box-shadow: 0 0 30px rgba(0, 180, 255, 0.7);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-outline {
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: var(--text-primary);
            padding: 12px 28px;
        }

        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: 0 0 18px rgba(0, 180, 255, 0.2);
        }

        .btn-ghost {
            color: var(--primary);
            padding: 8px 4px;
            font-weight: 500;
        }

        .btn-ghost i {
            transition: transform var(--transition);
        }

        .btn-ghost:hover i {
            transform: translateX(4px);
        }

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

        .mobile-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border);
            color: var(--text-primary);
            font-size: 18px;
        }

        /* ---------- Page Hero ---------- */
        .page-hero {
            position: relative;
            padding: 170px 0 100px;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            overflow: hidden;
        }

        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 15, 31, 0.92) 0%, rgba(10, 15, 31, 0.72) 50%, rgba(0, 180, 255, 0.18) 100%);
        }

        .page-hero::after {
            content: "";
            position: absolute;
            inset: 0;
            background-image: linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
            background-size: 60px 60px;
            pointer-events: none;
        }

        .page-hero .container {
            position: relative;
            z-index: 2;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

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

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

        .breadcrumb i {
            font-size: 10px;
            opacity: 0.6;
        }

        .page-hero h1 {
            font-size: 46px;
            line-height: 1.15;
            font-weight: 700;
            margin-bottom: 18px;
            letter-spacing: 1px;
            color: var(--text-primary);
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.4);
            text-wrap: balance;
        }

        .page-hero h1 .highlight {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .page-hero .lead {
            font-size: 18px;
            line-height: 1.7;
            color: var(--text-secondary);
            max-width: 600px;
            margin-bottom: 32px;
        }

        .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 32px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 16px;
            border-radius: var(--radius-full);
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid var(--border);
            font-size: 14px;
            font-weight: 500;
            color: var(--text-primary);
            backdrop-filter: blur(8px);
        }

        .hero-badge i {
            color: var(--accent);
            font-size: 13px;
        }

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

        /* ---------- Filter Tabs ---------- */
        .filter-tabs {
            padding: 24px 0 8px;
        }

        .filter-tabs .container {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .filter-pill {
            padding: 10px 22px;
            border-radius: var(--radius-full);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border);
            color: var(--text-secondary);
            font-size: 14px;
            font-weight: 500;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .filter-pill:hover {
            color: var(--text-primary);
            border-color: rgba(0, 180, 255, 0.35);
        }

        .filter-pill.active {
            background: linear-gradient(135deg, rgba(0, 180, 255, 0.2), rgba(0, 119, 255, 0.15));
            border-color: rgba(0, 180, 255, 0.5);
            color: var(--primary);
            box-shadow: 0 0 14px rgba(0, 180, 255, 0.15);
        }

        /* ---------- Category Cards ---------- */
        .category-cards {
            padding: 48px 0 64px;
        }

        .section-head {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: 36px;
        }

        .section-bar {
            width: 3px;
            height: 26px;
            border-radius: 3px;
            background: linear-gradient(180deg, var(--primary), var(--accent));
            box-shadow: 0 0 12px rgba(0, 180, 255, 0.5);
        }

        .section-head h2 {
            font-size: 28px;
            line-height: 1.2;
            font-weight: 700;
            margin: 0;
            letter-spacing: 0.5px;
        }

        .section-head .sub {
            font-size: 14px;
            color: var(--text-muted);
            margin-left: auto;
            align-self: flex-end;
            padding-bottom: 4px;
        }

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

        .cat-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--bg-soft);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            cursor: pointer;
        }

        .cat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(0, 180, 255, 0.25);
        }

        .card-media {
            position: relative;
            aspect-ratio: 3 / 3.8;
            overflow: hidden;
        }

        .card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .cat-card:hover .card-media img {
            transform: scale(1.05);
        }

        .card-media::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 15, 31, 0) 40%, rgba(10, 15, 31, 0.9) 100%);
            pointer-events: none;
        }

        .card-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
            padding: 5px 12px;
            border-radius: 6px;
            background: linear-gradient(135deg, rgba(255, 159, 10, 0.9), rgba(255, 120, 20, 0.85));
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.5px;
            box-shadow: 0 2px 12px rgba(255, 159, 10, 0.3);
            backdrop-filter: blur(4px);
        }

        .card-info {
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 2;
            padding: 20px;
        }

        .card-tag {
            display: inline-block;
            padding: 4px 10px;
            border-radius: 6px;
            background: rgba(0, 255, 198, 0.12);
            color: var(--accent);
            font-size: 12px;
            font-weight: 500;
            margin-bottom: 10px;
            border: 1px solid rgba(0, 255, 198, 0.18);
        }

        .card-title {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .card-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
        }

        .card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .card-meta i {
            color: var(--primary);
            font-size: 12px;
        }

        /* ---------- Features ---------- */
        .features {
            position: relative;
            padding: 80px 0;
            background: var(--bg-soft);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }

        .features .container {
            position: relative;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 40px;
        }

        .feature-card {
            padding: 36px 28px;
            border-radius: var(--radius-lg);
            background: rgba(18, 25, 41, 0.75);
            border: 1px solid var(--border);
            backdrop-filter: blur(12px);
            transition: all var(--transition);
            text-align: center;
        }

        .feature-card:hover {
            border-color: rgba(0, 180, 255, 0.35);
            box-shadow: 0 8px 40px rgba(0, 180, 255, 0.08);
            transform: translateY(-3px);
        }

        .feature-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 20px;
            border-radius: 18px;
            background: linear-gradient(135deg, rgba(0, 180, 255, 0.2), rgba(0, 255, 198, 0.12));
            border: 1px solid rgba(0, 180, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--primary);
            box-shadow: 0 0 24px rgba(0, 180, 255, 0.1);
        }

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

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

        /* ---------- Scenarios ---------- */
        .scenarios {
            padding: 80px 0;
        }

        .scenarios-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .scenario-card {
            padding: 28px 22px;
            border-radius: var(--radius-lg);
            background: rgba(18, 25, 41, 0.5);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }

        .scenario-card:hover {
            background: rgba(18, 25, 41, 0.85);
            border-color: rgba(0, 180, 255, 0.3);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
        }

        .scenario-num {
            font-size: 28px;
            font-weight: 700;
            font-family: "Inter", "DIN", sans-serif;
            color: var(--primary);
            text-shadow: 0 0 16px rgba(0, 180, 255, 0.4);
            margin-bottom: 14px;
        }

        .scenario-card h4 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

        .scenario-card p {
            font-size: 14px;
            line-height: 1.6;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        /* ---------- Learning Path ---------- */
        .learning-path {
            padding: 80px 0;
            background: url('/assets/images/backpic/back-3.webp') center/cover fixed no-repeat;
            position: relative;
        }

        .learning-path::before {
            content: "";
            position: absolute;
            inset: 0;
            background: rgba(10, 15, 31, 0.88);
        }

        .learning-path .container {
            position: relative;
            z-index: 2;
        }

        .path-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 0;
            margin-top: 48px;
            position: relative;
        }

        .path-steps::before {
            content: "";
            position: absolute;
            top: 32px;
            left: 8%;
            right: 8%;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0.35;
            border-radius: 2px;
        }

        .path-step {
            position: relative;
            text-align: center;
            padding: 0 16px;
        }

        .path-dot {
            width: 64px;
            height: 64px;
            margin: 0 auto 18px;
            border-radius: 50%;
            background: var(--bg-soft);
            border: 2px solid var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
            font-family: "Inter", "DIN", sans-serif;
            color: var(--primary);
            box-shadow: 0 0 24px rgba(0, 180, 255, 0.4);
            position: relative;
            z-index: 2;
        }

        .path-step h4 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text-primary);
        }

        .path-step p {
            font-size: 14px;
            line-height: 1.65;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        /* ---------- FAQ ---------- */
        .faq-section {
            padding: 80px 0;
            background: var(--bg-soft);
            border-top: 1px solid var(--border-light);
        }

        .faq-list {
            max-width: 860px;
            margin: 40px auto 0;
        }

        .faq-item {
            margin-bottom: 14px;
            border-radius: var(--radius-lg);
            background: rgba(18, 25, 41, 0.7);
            border: 1px solid var(--border);
            backdrop-filter: blur(12px);
            overflow: hidden;
            transition: border-color var(--transition);
        }

        .faq-item.active {
            border-color: rgba(0, 180, 255, 0.4);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            transition: color var(--transition);
            min-height: 44px;
        }

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

        .faq-icon {
            width: 30px;
            height: 30px;
            border-radius: 50%;
            background: rgba(0, 180, 255, 0.12);
            border: 1px solid rgba(0, 180, 255, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: var(--primary);
            flex-shrink: 0;
            transition: transform var(--transition);
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .faq-item.active .faq-answer {
            max-height: 280px;
        }

        .faq-answer-inner {
            padding: 0 24px 22px;
            font-size: 14px;
            line-height: 1.75;
            color: var(--text-secondary);
        }

        /* ---------- CTA ---------- */
        .cta-section {
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-card {
            position: relative;
            max-width: 900px;
            margin: 0 auto;
            padding: 64px 48px;
            border-radius: 20px;
            background: linear-gradient(135deg, rgba(0, 119, 255, 0.18), rgba(10, 15, 31, 0.85));
            border: 1px solid rgba(0, 180, 255, 0.25);
            text-align: center;
            overflow: hidden;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
        }

        .cta-card::before {
            content: "";
            position: absolute;
            top: -40%;
            left: -20%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(0, 180, 255, 0.35);
            filter: blur(100px);
            pointer-events: none;
        }

        .cta-card h2 {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 14px;
            position: relative;
            color: var(--text-primary);
        }

        .cta-card .desc {
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-secondary);
            max-width: 480px;
            margin: 0 auto 32px;
            position: relative;
        }

        .cta-form {
            display: flex;
            gap: 12px;
            max-width: 440px;
            margin: 0 auto 14px;
            position: relative;
        }

        .cta-input {
            flex: 1;
            height: 48px;
            padding: 0 16px;
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: var(--text-primary);
            font-size: 15px;
            outline: none;
            transition: all var(--transition);
        }

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

        .cta-input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 18px rgba(0, 180, 255, 0.2);
        }

        .cta-privacy {
            font-size: 12px;
            color: var(--text-muted);
            position: relative;
        }

        .cta-privacy a {
            color: var(--text-secondary);
            text-decoration: underline;
            text-underline-offset: 2px;
        }

        .cta-privacy a:hover {
            color: var(--primary);
        }

        /* ---------- Footer ---------- */
        .footer {
            background: #070C18;
            border-top: 1px solid var(--border-light);
            padding: 60px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand .logo-text {
            font-size: 22px;
            margin-bottom: 14px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-muted);
            margin-bottom: 0;
            max-width: 320px;
        }

        .footer-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .footer-links a {
            font-size: 14px;
            line-height: 2;
            color: var(--text-secondary);
            transition: color var(--transition);
        }

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

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

        .footer-contact span {
            font-size: 14px;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-contact i {
            color: var(--primary);
            font-size: 13px;
            width: 16px;
        }

        .footer-copyright {
            padding-top: 24px;
            border-top: 1px solid var(--border-light);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 13px;
            color: var(--text-muted);
        }

        /* ---------- Mobile Drawer ---------- */
        .mobile-drawer {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(10, 15, 31, 0.98);
            z-index: 999;
            padding: 80px 24px 40px;
            flex-direction: column;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.35s ease, visibility 0.35s ease;
        }

        .mobile-drawer.open {
            opacity: 1;
            visibility: visible;
            display: flex;
        }

        .mobile-drawer .nav-links {
            flex-direction: column;
            align-items: flex-start;
            gap: 8px;
            margin-bottom: 32px;
        }

        .mobile-drawer .nav-links a {
            font-size: 20px;
            padding: 12px 0;
            width: 100%;
            border-bottom: 1px solid var(--border-light);
        }

        .mobile-drawer .nav-links a::after {
            display: none;
        }

        .mobile-drawer .nav-links a.active {
            color: var(--primary);
        }

        .drawer-close {
            position: absolute;
            top: 20px;
            right: 20px;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid var(--border);
            color: var(--text-primary);
            font-size: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .drawer-cta {
            margin-top: auto;
        }

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

            .mobile-toggle {
                display: flex;
            }

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

            .features-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 16px;
            }

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

            .path-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px 16px;
            }

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

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

        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }

            .header {
                height: 64px;
            }

            .nav-wrap {
                height: 64px;
            }

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

            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 14px;
            }

            .search-btn,
            .nav-actions .btn-primary {
                display: none;
            }

            .page-hero {
                padding: 130px 0 64px;
            }

            .page-hero h1 {
                font-size: 32px;
            }

            .page-hero .lead {
                font-size: 15px;
            }

            .hero-badges {
                gap: 8px;
            }

            .hero-badge {
                padding: 6px 12px;
                font-size: 12px;
            }

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

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

            .card-media {
                aspect-ratio: 3 / 3.4;
            }

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

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

            .path-steps {
                grid-template-columns: 1fr;
            }

            .cta-card {
                padding: 44px 20px;
            }

            .cta-card h2 {
                font-size: 24px;
            }

            .cta-form {
                flex-direction: column;
            }

            .cta-input {
                width: 100%;
            }

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

            .footer-copyright {
                flex-direction: column;
                text-align: center;
            }

            .filter-tabs {
                overflow-x: auto;
                flex-wrap: nowrap;
                padding-bottom: 16px;
                -webkit-overflow-scrolling: touch;
            }

            .filter-tabs::-webkit-scrollbar {
                display: none;
            }

            .filter-pill {
                flex-shrink: 0;
            }
        }