:root {
            --bg-deep: #040A08;
            --bg-card: rgba(10, 26, 20, 0.5);
            --border-subtle: rgba(255, 255, 255, 0.05);
            --border-glow: rgba(16, 185, 129, 0.28);
            --accent-300: #6EE7B7;
            --accent-400: #34D399;
            --accent-500: #10B981;
            --accent-600: #059669;
            --accent-700: #047857;
            --teal-400: #2DD4BF;
            --text-primary: #EDEDF0;
            --text-secondary: #9CA3AF;
            --text-muted: #6B7280;
            --amber: #FBBF24;
            --radius-xl: 32px;
            --radius-2xl: 48px;
            --radius-3xl: 64px;
            --transition-fast: 0.2s;
            --transition-smooth: 0.28s;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            background: var(--bg-deep);
            color: var(--text-primary);
            overflow-x: hidden;
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        .glow-bg {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: 0;
            background:
                radial-gradient(circle at 30% 25%, rgba(16, 185, 129, 0.06) 0%, rgba(4, 10, 8, 0) 55%),
                radial-gradient(circle at 70% 65%, rgba(20, 184, 166, 0.04) 0%, rgba(4, 10, 8, 0) 50%);
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 32px;
            position: relative;
            z-index: 2;
        }
        /* Header */
        header {
            background: rgba(4, 10, 8, 0.88);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 16px 0;
            flex-wrap: wrap;
        }
        .logo {
            font-size: 1.5rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            background: linear-gradient(125deg, #FFFFFF, #34D399, #10B981);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-decoration: none;
            white-space: nowrap;
        }
        .logo .icon-rocket {
            display: inline-block;
            margin-right: 3px;
            animation: rocketBounce 2s ease-in-out infinite;
        }
        @keyframes rocketBounce {
            0%,
            100% {
                transform: translateY(0);
            }
            30% {
                transform: translateY(-6px);
            }
            50% {
                transform: translateY(0);
            }
            70% {
                transform: translateY(-3px);
            }
        }
        .nav-links {
            display: flex;
            gap: 28px;
            align-items: center;
            flex-wrap: wrap;
        }
        .nav-links a {
            text-decoration: none;
            font-weight: 500;
            color: #A1A1AA;
            transition: var(--transition-fast);
            font-size: 0.88rem;
            white-space: nowrap;
            position: relative;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 50%;
            width: 0;
            height: 2px;
            background: var(--accent-500);
            transition: var(--transition-fast);
            transform: translateX(-50%);
            border-radius: 2px;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-400);
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 60%;
        }

        /* Hero */
        .hero-center {
            padding: 80px 0 50px;
            text-align: center;
        }
        .section-badge {
            display: inline-block;
            background: rgba(16, 185, 129, 0.13);
            border: 1px solid rgba(16, 185, 129, 0.3);
            padding: 6px 18px;
            border-radius: 60px;
            font-size: 0.74rem;
            font-weight: 500;
            color: var(--accent-400);
            margin-bottom: 22px;
        }
        .hero-center h1 {
            font-size: 3.2rem;
            font-weight: 800;
            line-height: 1.16;
            letter-spacing: -0.025em;
            margin-bottom: 18px;
        }
        .hero-gradient {
            background: linear-gradient(135deg, #FFFFFF 18%, #34D399 48%, #14B8A6 88%);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .hero-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            margin: 0 auto 28px;
            max-width: 700px;
            line-height: 1.65;
        }

        /* 订阅控制台仪表盘 */
        .dashboard-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
            gap: 18px;
            margin: 30px 0 50px;
        }
        .metric-card {
            background: rgba(10, 26, 20, 0.5);
            border-radius: 28px;
            padding: 24px 18px;
            border: 1px solid rgba(255, 255, 255, 0.05);
            text-align: center;
            transition: var(--transition-smooth);
        }
        .metric-card:hover {
            border-color: var(--accent-500);
            background: rgba(16, 38, 28, 0.5);
            transform: translateY(-2px);
        }
        .metric-icon {
            font-size: 2rem;
            margin-bottom: 12px;
        }
        .metric-value {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }
        .metric-label {
            font-size: 0.8rem;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }
        .status-indicator {
            display: inline-block;
            width: 10px;
            height: 10px;
            background: var(--accent-500);
            border-radius: 50%;
            margin-right: 6px;
            box-shadow: 0 0 8px var(--accent-500);
            animation: dotPulse 2s infinite;
        }
        @keyframes dotPulse {
            0%,
            100% {
                box-shadow: 0 0 6px var(--accent-500);
            }
            50% {
                box-shadow: 0 0 20px var(--accent-400), 0 0 35px var(--accent-600);
            }
        }
        .offline-indicator {
            background: #6B7280;
            box-shadow: none;
        }

        /* 订阅工作原理 */
        .explain-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
            margin: 30px 0 50px;
        }
        .explain-card {
            background: rgba(10, 26, 20, 0.45);
            border-radius: 24px;
            padding: 28px 24px;
            border: 1px solid rgba(255, 255, 255, 0.04);
            transition: var(--transition-smooth);
        }
        .explain-card:hover {
            border-color: var(--accent-500);
            background: rgba(16, 38, 28, 0.5);
        }
        .explain-card h3 {
            font-size: 1.3rem;
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        /* 订阅实验室卡片 */
        .lab-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 20px;
            margin: 30px 0;
        }
        .lab-card {
            background: rgba(10, 26, 20, 0.45);
            border-radius: 24px;
            padding: 30px 22px;
            border: 1px solid rgba(255, 255, 255, 0.04);
            text-decoration: none;
            color: var(--text-primary);
            transition: var(--transition-smooth);
            display: flex;
            flex-direction: column;
            text-align: center;
        }
        .lab-card:hover {
            border-color: var(--accent-500);
            background: rgba(16, 38, 28, 0.5);
            transform: translateY(-3px);
            box-shadow: 0 10px 28px rgba(16, 185, 129, 0.1);
        }
        .lab-card .lc-icon {
            font-size: 2.4rem;
            margin-bottom: 14px;
        }
        .lab-card h4 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .lab-card p {
            font-size: 0.84rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }
        .lab-card .lc-link {
            margin-top: 12px;
            color: var(--accent-400);
            font-weight: 600;
            font-size: 0.86rem;
            display: inline-block;
        }

        /* 配置启动台 */
        .launchpad-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 20px;
            margin: 30px 0;
        }
        .launchpad-card {
            background: rgba(10, 26, 20, 0.45);
            border-radius: 24px;
            padding: 28px 20px;
            text-align: center;
            border: 1px solid var(--border-subtle);
            text-decoration: none;
            color: var(--text-primary);
            transition: var(--transition-smooth);
        }
        .launchpad-card:hover {
            border-color: var(--accent-500);
            background: rgba(16, 38, 28, 0.5);
            transform: translateY(-2px);
        }
        .launchpad-card .lp-icon {
            font-size: 2.2rem;
            margin-bottom: 10px;
        }
        .launchpad-card h4 {
            font-weight: 700;
            font-size: 1.05rem;
            margin-bottom: 6px;
        }
        .launchpad-card p {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 10px;
        }
        .launchpad-card .lp-link {
            color: var(--accent-400);
            font-weight: 600;
            font-size: 0.85rem;
        }

        /* SEO长文 */
        .seo-content {
            padding: 50px 0 60px;
            border-top: 1px solid rgba(255, 255, 255, 0.03);
            color: #B0B7C3;
            font-size: 0.94rem;
            line-height: 1.85;
        }
        .seo-content h2 {
            font-size: 1.65rem;
            color: #E2E8F0;
            margin: 30px 0 15px;
            font-weight: 700;
        }
        .seo-content h3 {
            font-size: 1.2rem;
            color: #CBD5E1;
            margin: 22px 0 9px;
            font-weight: 600;
        }
        .seo-content p {
            margin-bottom: 13px;
        }
        .seo-content ul {
            margin: 9px 0 14px 20px;
            list-style-type: disc;
        }
        .seo-content ul li {
            margin-bottom: 5px;
        }
        .seo-content strong {
            color: #D1D5DB;
        }
        .seo-content a {
            color: var(--accent-400);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .seo-content a:hover {
            color: var(--accent-300);
        }

        /* Footer */
        footer {
            background: #020806;
            padding: 45px 0 26px;
            border-top: 1px solid rgba(255, 255, 255, 0.02);
            font-size: 0.83rem;
            color: #6B7280;
        }
        .footer-grid {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 32px;
            margin-bottom: 36px;
        }
        .footer-col h4 {
            color: #CBD5E1;
            margin-bottom: 10px;
            font-size: 0.88rem;
            font-weight: 600;
        }
        .footer-col a {
            display: block;
            color: #6B7280;
            text-decoration: none;
            margin-bottom: 5px;
            transition: var(--transition-fast);
            font-size: 0.8rem;
        }
        .footer-col a:hover {
            color: var(--accent-400);
        }
        .footer-bottom {
            text-align: center;
            border-top: 1px solid rgba(255, 255, 255, 0.03);
            padding-top: 18px;
            font-size: 0.76rem;
            color: #4B5563;
        }

        @media (max-width: 900px) {
            .hero-center h1 {
                font-size: 2.4rem;
            }
            .nav-links {
                gap: 18px;
                margin-top: 8px;
                width: 100%;
                justify-content: center;
            }
            nav {
                flex-direction: column;
            }
        }
        @media (max-width: 500px) {
            .container {
                padding: 0 14px;
            }
            .hero-center h1 {
                font-size: 1.8rem;
            }
            .dashboard-grid {
                grid-template-columns: 1fr 1fr;
            }
        }