* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
        }

        body {
            background: #0b1221;
            color: #eef2f8;
            line-height: 1.5;
        }

        /* 磨砂玻璃效果通用 */
        .glass {
            background: rgba(18, 28, 46, 0.8);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid rgba(66, 140, 255, 0.15);
            border-radius: 2rem;
        }

        .container {
            max-width: 1300px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 导航 */
        header {
            /*position: sticky;*/
            top: 0;
            z-index: 100;
            background: rgba(8, 16, 30, 0.9);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid #1e2c46;
        }

        .navbar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 16px 0;
            flex-wrap: wrap;
        }

        .logo a {
            font-size: 1.9rem;
            font-weight: 800;
            background: linear-gradient(130deg, #6c9eff, #b3d0ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            letter-spacing: -0.5px;
        }

        .nav-links {
            display: flex;
            gap: 2.2rem;
            flex-wrap: wrap;
        }

        .nav-links a {
            color: #cdddfd;
            font-weight: 500;
            transition: 0.2s;
            border-bottom: 2px solid transparent;
            padding-bottom: 5px;
        }

        .nav-links a:hover {
            border-bottom-color: #3b82f6;
            color: white;
        }

        /* banner */
        .banner {
            margin: 2.5rem 0 3.5rem;
            padding: 3.2rem 2.5rem;
            background: radial-gradient(circle at 10% 30%, #13294b, #020b1a);
            border-radius: 3rem;
            border: 1px solid #2f416b;
            box-shadow: 0 30px 40px -20px #00000080;
            text-align: center;
        }

        .banner h1 {
            font-size: 3rem;
            font-weight: 800;
            background: linear-gradient(145deg, #fff, #b0cdff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 1.2rem;
        }

        .banner p {
            font-size: 1.4rem;
            max-width: 900px;
            margin: 0 auto 2rem;
            color: #ccdeff;
        }

        .banner .badge {
            display: inline-block;
            background: #1e3e6f;
            color: white;
            padding: 0.75rem 2.5rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1.25rem;
            border: 1px solid #5680e9;
            box-shadow: 0 10px 18px -6px #1e3e6f;
        }

        .badge strong {
            background: #fbbf24;
            color: #0b1a30;
            padding: 0.2rem 1rem;
            border-radius: 40px;
            margin-left: 12px;
            font-weight: 800;
        }

        /* 标题 */
        .section-title {
            font-size: 2.3rem;
            font-weight: 700;
            margin: 3rem 0 2rem;
            padding-left: 1.5rem;
            border-left: 6px solid #3b82f6;
            background: linear-gradient(90deg, #1e2f4a, transparent);
            padding: 1rem 0 1rem 1.8rem;
            border-radius: 0 60px 60px 0;
        }

        /* 卡片网格 */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 2rem;
        }

        .card {
            background: #111f33;
            border-radius: 2rem;
            padding: 2rem 1.8rem;
            border: 1px solid #2e4365;
            transition: 0.2s all;
            box-shadow: 0 18px 25px -18px #000;
        }

        .card:hover {
            transform: translateY(-8px);
            border-color: #567fcf;
            box-shadow: 0 25px 35px -15px #1e3f7a;
        }

        .card h3 {
            font-size: 1.8rem;
            margin-bottom: 1rem;
            color: #bed6ff;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .card p {
            color: #b7c9ed;
            font-size: 1rem;
        }

        strong {
            background: #24416b;
            color: #ffffff;
            font-weight: 700;
            padding: 0.15rem 0.5rem;
            border-radius: 30px;
            border: 1px solid #5780d4;
            font-weight: 600;
            display: inline-block;
            margin: 0 2px;
        }

        /* FAQ 区域 */
        .faq-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.8rem;
            margin: 2rem 0;
        }

        .faq-item {
            background: #142439;
            border-radius: 1.8rem;
            padding: 1.8rem;
            border-left: 6px solid #3b82f6;
        }

        .faq-item h4 {
            font-size: 1.35rem;
            margin-bottom: 0.8rem;
            color: #d5e5ff;
        }

        /* 平台按钮 */
        .platform-row {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 1.2rem;
            margin: 3rem 0 2rem;
        }

        .platform-btn {
            background: rgba(20, 40, 70, 0.8);
            backdrop-filter: blur(6px);
            border: 1px solid #3561a5;
            color: #deecff;
            font-weight: 600;
            padding: 1rem 2.4rem;
            border-radius: 60px;
            transition: 0.25s;
            min-width: 150px;
            text-align: center;
            font-size: 1.1rem;
        }

        .platform-btn:hover {
            background: #2b4a85;
            border-color: #90b4ff;
            color: white;
            transform: scale(1.04);
            box-shadow: 0 12px 22px -8px #1b3b7a;
        }

        /* 底部 */
        footer {
            background: #0b1424;
            border-top: 1px solid #25395b;
            margin-top: 4rem;
            padding: 2.5rem 0 3rem;
            border-radius: 4rem 4rem 0 0;
        }

        .copyright {
            text-align: center;
            color: #7b93bb;
            margin-top: 3rem;
            font-size: 0.95rem;
        }

        .copyright a {
            color: #9bb9ff;
        }

        /* 锚点偏移 */
        .anchor {
            scroll-margin-top: 90px;
        }

        /* 移动端 */
        @media (max-width: 700px) {
            .navbar {
                flex-direction: column;
                gap: 0.8rem;
            }
            .nav-links {
                justify-content: center;
                gap: 1.2rem;
            }
            .banner h1 {
                font-size: 2.2rem;
            }
            .banner p {
                font-size: 1.1rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .faq-grid {
                grid-template-columns: 1fr;
            }
            .platform-btn {
                padding: 0.8rem 1.6rem;
                min-width: 130px;
            }
        }