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

        body {
            font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            background: #fefaff;
            color: #1f1a3c;
            line-height: 1.5;
            scroll-behavior: smooth;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 28px;
        }

        /* 全新配色：紫罗兰 + 珊瑚粉渐变 */
        :root {
            --primary: #a855f7;
            --primary-dark: #7e22ce;
            --secondary: #f43f5e;
            --gradient-hero: linear-gradient(135deg, #c084fc 0%, #db2777 100%);
            --glass-bg: rgba(255, 255, 255, 0.75);
            --card-shadow: 0 20px 35px -12px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0,0,0,0.02);
            --border-light: 1px solid rgba(168, 85, 247, 0.15);
        }

        /* 头部导航 */
        .header {
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(12px);
            position: sticky;
            top: 0;
            z-index: 100;
            border-bottom: 1px solid rgba(168, 85, 247, 0.2);
        }

        .nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding: 1rem 0;
        }

        .logo a {
            font-size: 1.6rem;
            font-weight: 800;
            background: linear-gradient(125deg, #a855f7, #ec4899);
            background-clip: text;
            -webkit-background-clip: text;
            color: transparent;
            text-decoration: none;
            letter-spacing: -0.02em;
        }

        .nav-links {
            display: flex;
            gap: 2rem;
            align-items: center;
            flex-wrap: wrap;
        }

        .nav-links a {
            text-decoration: none;
            font-weight: 500;
            color: #2d2a4a;
            transition: 0.2s;
        }

        .nav-links a:hover {
            color: #a855f7;
        }

        .btn-subscribe {
            background: linear-gradient(105deg, #a855f7, #d946ef);
            color: white !important;
            padding: 0.5rem 1.4rem;
            border-radius: 40px;
            box-shadow: 0 6px 12px -6px rgba(168, 85, 247, 0.4);
            transition: all 0.2s;
        }

        .btn-subscribe:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 20px -10px #a855f7;
        }

        /* Hero 全新设计 */
        .hero {
            text-align: center;
            padding: 4rem 0 3rem;
            position: relative;
        }

        .hero-badge {
            background: #f3e8ff;
            color: #7e22ce;
            display: inline-block;
            padding: 0.3rem 1.2rem;
            border-radius: 60px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 1.5rem;
            backdrop-filter: blur(4px);
        }

        .hero h1 {
            font-size: 3.2rem;
            font-weight: 800;
            background: linear-gradient(to right, #4c1d95, #db2777, #c026d3);
            background-clip: text;
            -webkit-background-clip: text;
            color: transparent;
            margin-bottom: 1rem;
            letter-spacing: -0.02em;
        }

        .hero .tagline {
            font-size: 1.25rem;
            color: #4c4b6e;
            max-width: 720px;
            margin: 0 auto 1.8rem;
        }

        .hero-buttons {
            display: flex;
            gap: 1.2rem;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn-download-large {
            background: linear-gradient(105deg, #a855f7, #ec4899);
            color: white;
            padding: 0.9rem 2.4rem;
            border-radius: 56px;
            font-weight: 700;
            font-size: 1.1rem;
            transition: all 0.25s;
            box-shadow: 0 12px 20px -12px #c084fc;
            text-decoration: none;
            display: inline-block;
        }

        .btn-download-large:hover {
            transform: translateY(-3px);
            box-shadow: 0 20px 28px -12px #a855f7;
        }

        .btn-outline {
            background: transparent;
            border: 1.5px solid #a855f7;
            color: #a855f7;
            padding: 0.85rem 2rem;
            border-radius: 56px;
            font-weight: 600;
            text-decoration: none;
            transition: 0.2s;
        }

        .btn-outline:hover {
            background: #f9f5ff;
            border-color: #d946ef;
            color: #d946ef;
        }

        /* 核心特性卡片 (全新文案) */
        .features {
            padding: 3rem 0 2rem;
        }

        .section-title {
            text-align: center;
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 2.5rem;
            background: linear-gradient(125deg, #5b21b6, #be185d);
            background-clip: text;
            -webkit-background-clip: text;
            color: transparent;
        }

        .cards-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 2rem;
        }

        .card {
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(2px);
            border-radius: 2rem;
            padding: 1.8rem;
            transition: all 0.3s;
            border: var(--border-light);
            box-shadow: var(--card-shadow);
        }

        .card:hover {
            transform: translateY(-8px);
            border-color: #c084fc;
            box-shadow: 0 25px 35px -16px rgba(168, 85, 247, 0.25);
        }

        .card-icon {
            font-size: 2.6rem;
            margin-bottom: 1rem;
        }

        .card h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
            color: #2d1b69;
        }

        .card p {
            color: #4a456c;
        }

        /* 新板块: 智能路由实验室 + 全球延迟热力图创意区 */
        .smart-lab {
            background: linear-gradient(115deg, #faf5ff 0%, #ffffff 100%);
            border-radius: 2rem;
            padding: 2rem;
            margin: 2rem 0;
            border: 1px solid #e9e4ff;
        }

        .lab-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 2rem;
            margin-top: 1.5rem;
        }

        .lab-item {
            flex: 1;
            background: white;
            border-radius: 1.5rem;
            padding: 1.5rem;
            text-align: center;
            box-shadow: 0 8px 20px rgba(0,0,0,0.02);
            border: 1px solid #f0eaff;
        }

        .lab-number {
            font-size: 2rem;
            font-weight: 800;
            color: #db2777;
        }

        .platform-download {
            background: #ffffff;
            border-radius: 2rem;
            padding: 2rem;
            margin: 2rem 0;
            border: 1px solid #ede9fe;
        }

        .platform-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            justify-content: center;
            margin: 1.5rem 0;
        }

        .platform-item {
            background: #faf9ff;
            border-radius: 1.8rem;
            padding: 1.2rem 1.5rem;
            text-align: center;
            flex: 1 1 150px;
            transition: all 0.2s;
            border: 1px solid #ede9fe;
        }

        .platform-item:hover {
            background: #f3e8ff;
            transform: translateY(-3px);
        }

        .download-mini-btn {
            background: linear-gradient(105deg, #a855f7, #d946ef);
            color: white;
            padding: 0.4rem 1rem;
            border-radius: 40px;
            font-size: 0.8rem;
            font-weight: 500;
            text-decoration: none;
            display: inline-block;
            margin-top: 0.6rem;
        }

        .news-update {
            background: linear-gradient(115deg, #fcf9ff 0%, #ffffff 100%);
            border-radius: 2rem;
            padding: 2rem;
            margin: 2rem 0;
            border: 1px solid #ede9fe;
        }

        .update-list li {
            padding: 0.7rem 0;
            border-bottom: 1px dashed #ddd6fe;
            display: flex;
            gap: 1rem;
            align-items: baseline;
        }

        .update-date {
            font-weight: 700;
            color: #a855f7;
            min-width: 95px;
        }

        .stats-grid {
            display: flex;
            gap: 2rem;
            justify-content: space-around;
            flex-wrap: wrap;
            margin-top: 1.8rem;
        }

        .stat-card {
            background: white;
            padding: 1.2rem 1.5rem;
            border-radius: 1.5rem;
            flex: 1;
            text-align: center;
            border: 1px solid #f0eaff;
        }

        .stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: #db2777;
        }

        .guide {
            background: #ffffff;
            border-radius: 2rem;
            padding: 2rem;
            margin: 2rem 0;
            border: 1px solid #ede9fe;
        }

        .steps {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            margin: 1.8rem 0;
        }

        .step {
            flex: 1;
            background: #faf9ff;
            padding: 1.2rem;
            border-radius: 1.5rem;
            border: 1px solid #f0eaff;
        }

        .step-number {
            width: 34px;
            height: 34px;
            background: linear-gradient(135deg, #a855f7, #ec4899);
            border-radius: 60px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: 700;
            margin-bottom: 0.8rem;
        }

        .btn-primary {
            background: linear-gradient(105deg, #a855f7, #d946ef);
            color: white;
            padding: 0.7rem 2rem;
            border-radius: 60px;
            font-weight: 600;
            text-decoration: none;
            display: inline-block;
            transition: 0.2s;
        }

        .faq-preview {
            background: #ffffff;
            border-radius: 2rem;
            padding: 2rem;
            margin: 2rem 0;
            border: 1px solid #ede9fe;
        }

        .faq-item {
            margin-bottom: 1.2rem;
            border-bottom: 1px solid #f0eaff;
            padding-bottom: 0.9rem;
        }

        .faq-question {
            font-weight: 700;
            font-size: 1.05rem;
            color: #2d1b69;
        }

        .footer {
            border-top: 1px solid #ede9fe;
            background: #fcfaff;
            padding: 2rem 0;
            text-align: center;
            color: #5b5580;
        }

        .footer-links {
            display: flex;
            justify-content: center;
            gap: 2rem;
            flex-wrap: wrap;
            margin-bottom: 1rem;
        }

        .footer-links a {
            text-decoration: none;
            color: #a855f7;
            font-weight: 500;
        }

        @media (max-width: 768px) {
            .hero h1 {
                font-size: 2.2rem;
            }
            .nav {
                flex-direction: column;
                gap: 0.8rem;
            }
            .cards-grid, .steps {
                gap: 1rem;
            }
        }