:root {
            --primary: #A55EEA;
            --primary-dark: #7C3AED;
            --accent: #2BCBBA;
            --blue: #5F9DFF;
            --bg: #0B0B12;
            --surface: rgba(255,255,255,0.04);
            --surface2: rgba(255,255,255,0.07);
            --text: #F0F0F5;
            --text-muted: #8888A0;
            --border: rgba(255,255,255,0.08);
            --radius: 24px;
        }

        * { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            background: var(--bg); color: var(--text); overflow-x: hidden; line-height: 1.7;
        }
        ::-webkit-scrollbar { width: 6px; }
        ::-webkit-scrollbar-track { background: var(--bg); }
        ::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 3px; }

        /* NAV (与首页一致) */
        nav {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
            padding: 0.9rem 3rem;
            display: flex; align-items: center; justify-content: space-between;
            backdrop-filter: blur(24px);
            background: rgba(11,11,18,0.85);
            border-bottom: 1px solid var(--border);
        }
        .nav-logo { display: flex; align-items: center; gap: 0.75rem; font-size: 1.4rem; font-weight: 950; text-decoration: none; color: var(--text); }
        .nav-logo img { width: 38px; height: 38px; border-radius: 10px; object-fit: cover; }
        .nav-logo .logo-text { background: linear-gradient(135deg, var(--primary), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
        .nav-links { display: flex; gap: 2rem; list-style: none; align-items: center; }
        .nav-links a { color: var(--text-muted); text-decoration: none; font-size: 0.88rem; font-weight: 500; transition: color 0.3s; }
        .nav-links a:hover { color: var(--text); }
        .nav-links a.active { color: var(--primary); font-weight: 700; }
        .nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: white; border: none; padding: 0.55rem 1.5rem; border-radius: 10px;
            font-weight: 700; cursor: pointer; font-size: 0.88rem; text-decoration: none;
            transition: all 0.2s;
        }
        .nav-cta:hover { transform: translateY(-1px); box-shadow: 0 8px 25px rgba(165,94,234,0.4); }

        /* HERO */
        .hero {
            min-height: 90vh;
            display: flex; align-items: center;
            padding: 7rem 3rem 4rem;
            max-width: 1300px; margin: 0 auto;
            gap: 5rem;
        }
        .hero-left { flex: 1; }
        .hero-right { flex: 1; display: flex; justify-content: center; align-items: center; }
        .hero-tag {
            display: inline-flex; align-items: center; gap: 0.5rem;
            background: rgba(165,94,234,0.12); border: 1px solid rgba(165,94,234,0.3);
            padding: 0.4rem 1.2rem; border-radius: 50px;
            font-size: 0.78rem; color: var(--primary); font-weight: 700;
            margin-bottom: 2rem;
        }
        .hero h1 {
            font-size: clamp(2.8rem, 5vw, 4.2rem);
            font-weight: 950; line-height: 1.1; margin-bottom: 1.25rem;
        }
        .hero h1 .highlight {
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
            -webkit-background-clip: text; -webkit-text-fill-color: transparent;
        }
        .hero p { color: var(--text-muted); font-size: 1.05rem; max-width: 480px; margin-bottom: 2.5rem; line-height: 1.85; }
        .hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; margin-bottom: 3rem; }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: white; border: none; padding: 0.9rem 2.2rem; border-radius: 12px;
            font-weight: 700; font-size: 0.98rem; cursor: pointer; text-decoration: none;
            display: inline-flex; align-items: center; gap: 0.5rem; transition: all 0.3s;
        }
        .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 35px rgba(165,94,234,0.45); }
        .btn-ghost {
            background: var(--surface2); color: var(--text); border: 1px solid var(--border);
            padding: 0.9rem 2.2rem; border-radius: 12px;
            font-weight: 600; font-size: 0.98rem; cursor: pointer; text-decoration: none;
            display: inline-flex; align-items: center; gap: 0.5rem; transition: all 0.3s;
        }
        .btn-ghost:hover { border-color: var(--primary); }
        .hero-stats { display: flex; gap: 2rem; flex-wrap: wrap; }
        .stat-item { text-align: left; }
        .stat-num { font-size: 1.8rem; font-weight: 950; background: linear-gradient(135deg, var(--primary), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
        .stat-label { font-size: 0.78rem; color: var(--text-muted); font-weight: 600; }

        /* 右侧视觉 - 节点地图模拟 */
        .hero-visual { position: relative; width: 100%; max-width: 500px; }
        .map-container {
            background: linear-gradient(135deg, rgba(165,94,234,0.1), rgba(43,203,186,0.05));
            border: 1px solid rgba(165,94,234,0.2);
            border-radius: 24px; padding: 2rem;
            position: relative; z-index: 2;
        }
        .map-title { font-size: 0.9rem; font-weight: 800; color: var(--primary); margin-bottom: 1.5rem; }
        .map-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.8rem; }
        .map-node {
            background: rgba(255,255,255,0.04);
            border: 1px solid var(--border); border-radius: 12px;
            padding: 0.8rem; text-align: center; font-size: 0.8rem;
            transition: all 0.3s;
        }
        .map-node:hover { border-color: var(--primary); background: rgba(165,94,234,0.08); }
        .map-node .flag { font-size: 1.5rem; }
        .map-node .name { font-weight: 700; }
        .map-node .ping { font-size: 0.7rem; color: var(--accent); }
        .float-badge {
            position: absolute; background: var(--surface2);
            border: 1px solid rgba(43,203,186,0.3); border-radius: 16px; padding: 0.8rem 1.1rem;
            display: flex; align-items: center; gap: 0.5rem;
            font-size: 0.82rem; font-weight: 700; color: var(--accent);
            box-shadow: 0 10px 30px rgba(0,0,0,0.3);
            animation: float 3s ease-in-out infinite;
        }
        .float-badge.top { top: -20px; right: -20px; }
        .float-badge.bottom { bottom: -15px; left: -20px; animation-delay: -1.5s; }
        @keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }

        /* SECTION 通用 */
        .section { padding: 5rem 3rem; max-width: 1300px; margin: 0 auto; }
        .section-label { text-align: center; font-size: 0.78rem; font-weight: 800; color: var(--primary); text-transform: uppercase; letter-spacing: 3px; margin-bottom: 0.5rem; }
        .section-title { text-align: center; font-size: 2.2rem; font-weight: 950; margin-bottom: 3rem; }

        /* 核心功能卡片 */
        .features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
        .feature-card {
            background: var(--surface2); border: 1px solid var(--border); border-radius: 20px;
            padding: 2rem; transition: all 0.3s;
        }
        .feature-card:hover { transform: translateY(-5px); border-color: rgba(165,94,234,0.4); }
        .feature-icon { font-size: 3rem; margin-bottom: 1rem; }
        .feature-card h3 { font-size: 1.3rem; font-weight: 800; margin-bottom: 0.75rem; }
        .feature-card p { color: var(--text-muted); font-size: 0.9rem; }

        /* 数据统计条 */
        .stats-bar {
            display: flex; justify-content: space-around; flex-wrap: wrap; gap: 1rem;
            background: var(--surface2); border: 1px solid var(--border); border-radius: 24px;
            padding: 2rem 1.5rem; margin: 4rem auto;
        }
        .stat-circle { text-align: center; }
        .stat-circle .num { font-size: 2.8rem; font-weight: 950; background: linear-gradient(135deg, var(--primary), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
        .stat-circle .label { color: var(--text-muted); font-size: 0.85rem; }

        /* 速度对比表格 */
        .speed-table { max-width: 800px; margin: 0 auto; border-collapse: collapse; width: 100%; background: var(--surface2); border-radius: 16px; overflow: hidden; }
        .speed-table th, .speed-table td { padding: 1rem 1.5rem; text-align: center; border-bottom: 1px solid var(--border); }
        .speed-table th { background: rgba(165,94,234,0.1); font-weight: 800; color: var(--primary); }
        .speed-table td:first-child { text-align: left; font-weight: 600; }
        .speed-value { color: var(--accent); font-weight: 700; }

        /* 场景图标网格 */
        .scenes-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1.5rem; margin-top: 3rem; }
        .scene-card { text-align: center; padding: 1.5rem 0.5rem; background: var(--surface2); border-radius: 16px; transition: all 0.3s; }
        .scene-card:hover { transform: translateY(-3px); border: 1px solid rgba(165,94,234,0.3); }
        .scene-icon { font-size: 2.5rem; margin-bottom: 0.5rem; }
        .scene-name { font-weight: 700; font-size: 0.9rem; }

        /* 设备支持 */
        .device-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 2rem; margin-top: 2rem; }
        .device-item { text-align: center; width: 100px; }
        .device-icon { font-size: 3rem; }
        .device-name { font-size: 0.8rem; color: var(--text-muted); }

        /* CTA */
        .cta { padding: 6rem 3rem; text-align: center; position: relative; overflow: hidden; background: radial-gradient(ellipse at 50% 50%, rgba(165,94,234,0.2), transparent 70%); }
        .cta h2 { font-size: 2.8rem; font-weight: 950; margin-bottom: 1rem; }
        .cta p { color: var(--text-muted); font-size: 1.05rem; margin-bottom: 2rem; }
        .cta .btn-primary { font-size: 1.05rem; padding: 1rem 2.5rem; }

        /* FOOTER (与首页一致) */
        footer { padding: 3rem; border-top: 1px solid var(--border); }
        .footer-grid { max-width: 1300px; margin: 0 auto; display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 2.5rem; margin-bottom: 2rem; }
        .footer-brand p { color: var(--text-muted); font-size: 0.86rem; margin-top: 0.75rem; line-height: 1.8; }
        .footer-col h4 { font-size: 0.87rem; font-weight: 800; margin-bottom: 1rem; }
        .footer-col a { display: block; color: var(--text-muted); text-decoration: none; font-size: 0.82rem; margin-bottom: 0.5rem; transition: color 0.3s; }
        .footer-col a:hover { color: var(--primary); }
        .footer-bottom { max-width: 1300px; margin: 0 auto; padding-top: 2rem; border-top: 1px solid var(--border); display: flex; justify-content: space-between; font-size: 0.79rem; color: var(--text-muted); }

        @media (max-width: 1024px) {
            .hero { flex-direction: column; padding: 7rem 2rem 3rem; gap: 3rem; }
            .features-grid { grid-template-columns: 1fr; }
            .scenes-grid { grid-template-columns: repeat(3, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .nav-links { display: none; }
        }
        @media (max-width: 600px) {
            .scenes-grid { grid-template-columns: 1fr 1fr; }
            .device-grid { gap: 1rem; }
            .footer-grid { grid-template-columns: 1fr; }
        }