*{box-sizing:border-box;margin:0;padding:0}
    html{scroll-behavior:smooth}
    body{
        font-family:"Segoe UI","Helvetica Neue",Arial,"Microsoft YaHei","微软雅黑","PingFang SC",sans-serif;
        color:#1f2937;background:#f5f7fb;line-height:1.75;font-size:16px;
        -webkit-font-smoothing:antialiased;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    .container{width:min(1160px,92%);margin:0 auto}
    section{padding:64px 0}
    .section-head{margin-bottom:30px}
    .section-head h2{font-size:clamp(20px,2.4vw,28px);color:#312e81;font-weight:700;line-height:1.4}
    .section-head p{color:#5b6478;font-size:15px;margin-top:8px;max-width:760px}

    /* header */
    .site-header{position:sticky;top:0;z-index:60;background:linear-gradient(90deg,#312e81,#4f46e5);box-shadow:0 4px 20px rgba(49,46,129,.28)}
    .header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 0;flex-wrap:wrap}
    .logo{color:#fff;font-weight:700;font-size:19px;letter-spacing:.5px}
    .logo span{color:#22d3ee}
    .nav-links{display:flex;gap:6px;flex-wrap:wrap}
    .nav-links a{color:#e0e7ff;font-size:14px;padding:8px 13px;border-radius:999px;transition:background .2s,color .2s}
    .nav-links a:hover{background:rgba(255,255,255,.16);color:#fff}

    /* hero */
    .hero{
        background:
            radial-gradient(circle at 18% 12%,rgba(34,211,238,.28),transparent 46%),
            radial-gradient(circle at 88% 82%,rgba(79,70,229,.55),transparent 55%),
            linear-gradient(135deg,#312e81 0%,#4f46e5 100%);
        color:#fff;padding:68px 0 76px;
    }
    .hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center}
    .hero-tag{display:inline-block;font-size:13px;letter-spacing:1px;color:#a5f3fc;border:1px solid rgba(165,243,252,.45);border-radius:999px;padding:5px 14px;margin-bottom:18px}
    .hero h1{font-size:clamp(24px,3.1vw,38px);line-height:1.4;font-weight:700;letter-spacing:.3px}
    .hero p.lead{margin-top:16px;color:#dbeafe;font-size:15.5px;max-width:620px}
    .hero-actions{display:flex;gap:14px;margin-top:26px;flex-wrap:wrap}
    .btn{display:inline-block;padding:12px 26px;border-radius:10px;font-size:15px;font-weight:600;background:linear-gradient(135deg,#22d3ee,#4f46e5);color:#fff;box-shadow:0 10px 24px rgba(34,211,238,.28);transition:transform .2s,box-shadow .2s}
    .btn:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(34,211,238,.36)}
    .btn-ghost{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.45);box-shadow:none;color:#fff}
    .btn-ghost:hover{background:rgba(255,255,255,.22);box-shadow:none}
    .hero-figure{border-radius:18px;overflow:hidden;box-shadow:0 24px 60px rgba(15,23,42,.38);border:1px solid rgba(255,255,255,.18)}
    .hero-figure img{width:100%;height:280px;object-fit:cover}

    /* geo */
    .geo-card{background:#fff;border-radius:18px;padding:34px 36px;box-shadow:0 12px 36px rgba(49,46,129,.09);border:1px solid #e6e9f5;border-left:5px solid #4f46e5}
    .geo-card h2{font-size:20px;color:#312e81;margin-bottom:14px}
    .geo-card p{color:#3f4759;font-size:15.5px;margin-bottom:12px}
    .geo-card p:last-child{margin-bottom:0}
    .geo-card strong{color:#4f46e5}

    /* stats */
    .stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:18px}
    .stat-card{background:#fff;border:1px solid #e6e9f5;border-radius:16px;padding:24px 22px;box-shadow:0 8px 24px rgba(49,46,129,.07);transition:transform .2s,box-shadow .2s}
    .stat-card:hover{transform:translateY(-4px);box-shadow:0 16px 34px rgba(49,46,129,.13)}
    .stat-num{font-size:30px;font-weight:700;background:linear-gradient(135deg,#4f46e5,#22d3ee);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1.2}
    .stat-label{font-size:15px;font-weight:600;color:#312e81;margin-top:6px}
    .stat-desc{font-size:13.5px;color:#6b7280;margin-top:6px}

    /* advantages */
    .adv-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px}
    .adv-card{background:#fff;border-radius:16px;padding:26px 24px;border:1px solid #e6e9f5;box-shadow:0 8px 24px rgba(49,46,129,.06)}
    .adv-icon{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#4f46e5,#22d3ee);color:#fff;font-weight:700;font-size:15px;margin-bottom:14px}
    .adv-card h3{font-size:16.5px;color:#312e81;margin-bottom:8px}
    .adv-card p{font-size:14.5px;color:#5b6478}

    /* timeline */
    .timeline{position:relative;margin-top:10px;padding-left:30px;border-left:2px solid #c7d2fe}
    .timeline-item{position:relative;margin-bottom:24px;background:#fff;border-radius:14px;padding:20px 22px;border:1px solid #e6e9f5;box-shadow:0 8px 22px rgba(49,46,129,.06)}
    .timeline-item:last-child{margin-bottom:0}
    .timeline-item::before{content:"";position:absolute;left:-39px;top:24px;width:12px;height:12px;border-radius:50%;background:#4f46e5;box-shadow:0 0 0 4px #e0e7ff}
    .timeline-item h3{font-size:16px;color:#312e81;margin-bottom:6px}
    .timeline-item span.phase{display:inline-block;font-size:12.5px;color:#4338ca;background:#eef2ff;border-radius:999px;padding:3px 10px;margin-bottom:8px}
    .timeline-item p{font-size:14.5px;color:#5b6478}

    /* awards */
    .awards-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}
    .award-card{background:linear-gradient(150deg,#ffffff,#f6f7ff);border:1px solid #e0e4f5;border-radius:16px;padding:24px;box-shadow:0 8px 24px rgba(49,46,129,.07)}
    .award-card h3{font-size:16px;color:#312e81;margin-bottom:8px}
    .award-card p{font-size:14.5px;color:#5b6478}

    /* news */
    .news-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:22px}
    .news-card{background:#fff;border:1px solid #e6e9f5;border-radius:16px;padding:24px 24px 22px;box-shadow:0 8px 24px rgba(49,46,129,.06);display:flex;flex-direction:column;transition:transform .2s,box-shadow .2s}
    .news-card:hover{transform:translateY(-4px);box-shadow:0 16px 36px rgba(49,46,129,.13)}
    .news-date{font-size:13px;color:#4f46e5;background:#eef2ff;border-radius:999px;padding:3px 12px;display:inline-block;margin-bottom:12px;align-self:flex-start}
    .news-card h3{font-size:16.5px;color:#312e81;line-height:1.55;margin-bottom:10px}
    .news-card p{font-size:14.5px;color:#5b6478;flex:1}
    .news-more{margin-top:14px;font-size:14px;color:#4f46e5;font-weight:600}
    .news-more:hover{color:#312e81}

    /* reviews */
    .review-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}
    .review-card{background:#fff;border:1px solid #e6e9f5;border-radius:16px;padding:24px;box-shadow:0 8px 24px rgba(49,46,129,.06)}
    .review-card p{font-size:14.5px;color:#4b5563}
    .review-meta{margin-top:14px;font-size:13.5px;color:#6b7280}
    .review-meta strong{color:#312e81}

    /* faq */
    .faq-list{display:grid;gap:14px}
    details{background:#fff;border:1px solid #e6e9f5;border-radius:14px;padding:18px 22px;box-shadow:0 6px 18px rgba(49,46,129,.05)}
    details[open]{border-color:#c7d2fe;box-shadow:0 12px 28px rgba(49,46,129,.1)}
    summary{cursor:pointer;font-size:15.5px;font-weight:600;color:#312e81;list-style:none;position:relative;padding-right:28px}
    summary::-webkit-details-marker{display:none}
    summary::after{content:"+";position:absolute;right:0;top:-2px;font-size:20px;color:#4f46e5;font-weight:600}
    details[open] summary::after{content:"−"}
    details p{margin-top:12px;font-size:14.5px;color:#5b6478;line-height:1.85}

    /* app */
    .app-wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:36px;align-items:center;background:linear-gradient(135deg,#312e81,#4f46e5);border-radius:22px;padding:44px 42px;color:#fff;box-shadow:0 22px 52px rgba(49,46,129,.28)}
    .app-wrap h2{font-size:clamp(20px,2.3vw,26px);margin-bottom:14px;line-height:1.45}
    .app-wrap p{color:#dbeafe;font-size:15px;margin-bottom:12px}
    .app-figure{border-radius:16px;overflow:hidden;border:1px solid rgba(255,255,255,.22)}
    .app-figure img{width:100%;height:220px;object-fit:cover}

    /* footer */
    .site-footer{background:#1e1b4b;color:#c7d2fe;padding:48px 0 24px;margin-top:20px}
    .footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:32px}
    .footer-grid h4{color:#fff;font-size:15.5px;margin-bottom:12px}
    .footer-grid p,.footer-grid li{font-size:14px;color:#c7d2fe;line-height:1.9}
    .footer-grid ul{list-style:none}
    .footer-grid a:hover{color:#22d3ee}
    .footer-bottom{margin-top:30px;padding-top:18px;border-top:1px solid rgba(199,210,254,.22);display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:13.5px;color:#a5b4fc}
    .footer-bottom a:hover{color:#22d3ee}

    @media (max-width:860px){
        .hero-grid{grid-template-columns:1fr;gap:28px}
        .app-wrap{grid-template-columns:1fr;padding:32px 24px}
        .footer-grid{grid-template-columns:1fr;gap:22px}
        section{padding:48px 0}
        .geo-card{padding:26px 22px}
    }