:root{
      --bg:#f6f8fc;
      --panel:#ffffff;
      --panel-2:#f1f5ff;
      --text:#162033;
      --muted:#5d6b84;
      --line:#d9e1f2;
      --brand:#1d6fff;
      --brand-2:#28c2ff;
      --brand-3:#7c5cff;
      --good:#19a974;
      --warn:#ffb020;
      --shadow:0 14px 40px rgba(22,32,51,.10);
      --shadow-soft:0 8px 24px rgba(22,32,51,.08);
      --radius:22px;
      --radius-sm:16px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family: -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 12% 10%, rgba(40,194,255,.10), transparent 24%),
        radial-gradient(circle at 85% 0%, rgba(29,111,255,.10), transparent 28%),
        linear-gradient(180deg,#fbfcff 0%, #f4f7fd 52%, #f7f9fe 100%);
    }
    a{color:var(--brand);text-decoration:none}
    img{display:block;max-width:100%}
    .container{max-width:var(--container);margin:0 auto;padding:0 20px}
    .site-header{
      position:sticky;top:0;z-index:60;
      backdrop-filter: blur(14px);
      background:rgba(251,252,255,.82);
      border-bottom:1px solid rgba(217,225,242,.75);
    }
    .nav{
      display:flex;align-items:center;justify-content:space-between;gap:16px;
      min-height:76px;
    }
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .brand .logo{
      width:44px;height:44px;border-radius:14px;overflow:hidden;flex:0 0 auto;
      background:#fff;box-shadow:var(--shadow-soft);display:grid;place-items:center;border:1px solid #e9eef9;
    }
    .brand .txt{min-width:0}
    .brand strong{display:block;font-size:18px;line-height:1.1}
    .brand span{display:block;font-size:12px;color:var(--muted);margin-top:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .menu-toggle{
      display:none;border:1px solid var(--line);background:#fff;color:var(--text);
      border-radius:14px;padding:10px 14px;font-size:14px;font-weight:600
    }
    .nav-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{
      color:#21304b;font-size:14px;font-weight:600;padding:9px 0;opacity:.92;
      position:relative;
    }
    .nav-links a::after{
      content:"";position:absolute;left:0;bottom:0;width:100%;height:2px;border-radius:999px;
      background:linear-gradient(90deg,var(--brand),var(--brand-2));transform:scaleX(0);transform-origin:left;transition:.25s ease;
    }
    .nav-links a:hover::after,.nav-links a:focus-visible::after{transform:scaleX(1)}
    .nav-cta{display:flex;gap:10px;align-items:center}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      border-radius:999px;padding:12px 18px;font-weight:700;border:1px solid transparent;
      transition:transform .22s ease, box-shadow .22s ease, background .22s ease, color .22s ease;
      cursor:pointer;white-space:nowrap;
    }
    .btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-soft)}
    .btn-primary{
      background:linear-gradient(135deg,var(--brand) 0%,var(--brand-2) 100%);
      color:#fff;box-shadow:0 14px 30px rgba(29,111,255,.25);
    }
    .btn-secondary{
      background:#fff;color:var(--text);border-color:var(--line);
    }
    main{overflow:hidden}
    .hero{
      padding:42px 0 22px;
      position:relative;
    }
    .hero-shell{
      position:relative;
      background:
        linear-gradient(135deg, rgba(255,255,255,.88), rgba(241,245,255,.82)),
        linear-gradient(135deg, rgba(29,111,255,.08), rgba(124,92,255,.08));
      border:1px solid rgba(217,225,242,.9);
      border-radius:30px;
      box-shadow:var(--shadow);
      padding:28px;
      overflow:hidden;
    }
    .hero-shell::before,.hero-shell::after{
      content:"";position:absolute;border-radius:50%;pointer-events:none
    }
    .hero-shell::before{
      width:220px;height:220px;right:-60px;top:-70px;background:radial-gradient(circle, rgba(40,194,255,.22), transparent 62%);
    }
    .hero-shell::after{
      width:180px;height:180px;left:-56px;bottom:-72px;background:radial-gradient(circle, rgba(124,92,255,.16), transparent 60%);
    }
    .hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:24px;align-items:start;position:relative;z-index:1}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;
      background:#eef5ff;color:#1a4fb8;font-size:13px;font-weight:700;border:1px solid #d9e7ff;
    }
    h1{font-size:clamp(32px,5vw,54px);line-height:1.06;margin:14px 0 14px;letter-spacing:-.03em}
    .hero p{margin:0;color:var(--muted);font-size:16px;line-height:1.8;max-width:62ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
    .trust-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
    .chip{
      padding:9px 12px;border:1px solid var(--line);background:#fff;border-radius:999px;
      font-size:13px;color:#2a3853;font-weight:600;
    }
    .hero-card{
      background:linear-gradient(180deg,#fff 0%,#f7faff 100%);
      border:1px solid #e4ebf8;border-radius:24px;padding:18px;box-shadow:var(--shadow-soft)
    }
    .metric-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
    .metric{
      background:linear-gradient(180deg,#fff 0%,#f6f9ff 100%);
      border:1px solid #e3eaf6;border-radius:18px;padding:16px
    }
    .metric strong{display:block;font-size:24px;line-height:1.1;color:#10213a}
    .metric span{display:block;margin-top:6px;color:var(--muted);font-size:13px;line-height:1.5}
    .hero-mini{
      margin-top:12px;padding:14px;border-radius:18px;background:linear-gradient(135deg,#f2f7ff,#eef8ff);
      border:1px solid #dceafe;color:#254165;font-size:14px;line-height:1.7
    }
    section{padding:18px 0}
    .section-head{
      display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:16px
    }
    .section-head h2{margin:0;font-size:28px;line-height:1.15}
    .section-head p{margin:0;color:var(--muted);line-height:1.7;max-width:70ch}
    .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
    .card{
      background:var(--panel);border:1px solid #e3e9f6;border-radius:var(--radius);
      box-shadow:var(--shadow-soft);padding:22px;transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
    }
    .card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cfe0ff}
    .card h3{margin:0 0 10px;font-size:20px;line-height:1.25}
    .card p,.card li{color:var(--muted);line-height:1.75}
    .icon{
      width:46px;height:46px;border-radius:16px;display:grid;place-items:center;
      background:linear-gradient(135deg,#eef5ff,#eaf9ff);color:var(--brand);font-size:20px;margin-bottom:14px;
      border:1px solid #d8e6ff;
    }
    .stats{
      display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px
    }
    .stats .card{padding:20px}
    .stats .num{font-size:28px;font-weight:800;color:#10213a}
    .stats .label{font-size:13px;color:var(--muted);margin-top:6px}
    .table-wrap{
      overflow-x:auto;border-radius:24px;border:1px solid #e2e9f8;background:#fff;box-shadow:var(--shadow-soft)
    }
    table{width:100%;border-collapse:collapse;min-width:860px}
    th,td{padding:16px 18px;text-align:left;border-bottom:1px solid #edf2fb;vertical-align:top}
    th{background:#f6f9ff;font-size:14px;color:#20304d}
    td{font-size:14px;color:#3b4b68}
    tr:last-child td{border-bottom:none}
    .badge{
      display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border-radius:999px;
      background:#eefbf5;color:#12845d;font-size:12px;font-weight:700;border:1px solid #d7f3e6
    }
    .timeline{display:grid;gap:12px}
    .step{
      display:grid;grid-template-columns:76px 1fr;gap:14px;align-items:start;
      padding:18px;border-radius:20px;background:linear-gradient(180deg,#fff,#f7faff);border:1px solid #e3eaf7
    }
    .step .k{
      font-size:13px;font-weight:800;color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand-3));
      border-radius:16px;padding:14px 12px;text-align:center;box-shadow:0 10px 24px rgba(29,111,255,.22)
    }
    .step h3{margin:0 0 8px;font-size:18px}
    .faq{display:grid;gap:12px}
    .faq-item{
      background:#fff;border:1px solid #e2e8f5;border-radius:18px;overflow:hidden;box-shadow:var(--shadow-soft)
    }
    .faq-q{
      width:100%;background:none;border:0;padding:18px 18px;text-align:left;
      display:flex;justify-content:space-between;align-items:center;gap:14px;font-size:16px;font-weight:700;color:#18253b;cursor:pointer
    }
    .faq-q span{display:inline-block}
    .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease}
    .faq-a .inner{padding:0 18px 18px;color:var(--muted);line-height:1.8}
    .faq-item.active .faq-a{max-height:220px}
    .faq-item.active .chev{transform:rotate(180deg)}
    .chev{transition:transform .22s ease;color:var(--brand)}
    .reviews{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .quote{
      padding:22px;border-radius:22px;background:linear-gradient(180deg,#fff,#f8fbff);
      border:1px solid #e2e9f7;box-shadow:var(--shadow-soft)
    }
    .quote .name{margin-top:16px;font-weight:800;color:#21324f}
    .quote .role{font-size:13px;color:var(--muted);margin-top:4px}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{
      padding:10px 14px;border-radius:999px;background:#fff;border:1px solid #dfe6f4;color:#31415f;
      font-size:13px;font-weight:600;box-shadow:0 8px 18px rgba(22,32,51,.05)
    }
    .media-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .media-card{
      background:#fff;border:1px solid #e2e9f7;border-radius:24px;overflow:hidden;box-shadow:var(--shadow-soft)
    }
    .media-card .body{padding:18px}
    .media-card .body h3{margin-bottom:8px}
    .media-card .body p{margin:0;color:var(--muted);line-height:1.75}
    .media-card img{width:100%;aspect-ratio:16/9;object-fit:cover;background:#edf2fb}
    .article-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .article{
      padding:18px;border:1px solid #e2e9f6;background:#fff;border-radius:18px;box-shadow:var(--shadow-soft)
    }
    .article h3{font-size:17px;margin-bottom:8px}
    .article p{margin:0;color:var(--muted);line-height:1.7}
    .form-box{
      background:linear-gradient(180deg,#ffffff,#f7faff);
      border:1px solid #e2e9f7;border-radius:28px;padding:22px;box-shadow:var(--shadow-soft)
    }
    form{display:grid;gap:14px}
    .fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    label{display:block;font-size:13px;font-weight:700;color:#24324d;margin-bottom:8px}
    input,select,textarea{
      width:100%;border:1px solid #d7e0f0;background:#fff;color:var(--text);border-radius:14px;
      padding:13px 14px;font:inherit;outline:none;transition:border-color .2s ease, box-shadow .2s ease
    }
    input:focus,select:focus,textarea:focus{border-color:#8cb9ff;box-shadow:0 0 0 4px rgba(29,111,255,.10)}
    textarea{min-height:124px;resize:vertical}
    .footer{
      padding:24px 0 32px;border-top:1px solid #dbe4f4;margin-top:18px;background:rgba(248,250,255,.88)
    }
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:16px;align-items:start}
    .footer h3{margin:0 0 12px;font-size:18px}
    .footer p,.footer a,.footer li{color:#41516f;line-height:1.8;font-size:14px}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px}
    .footer-links a{padding:8px 0}
    .fine{margin-top:14px;padding-top:14px;border-top:1px solid #e1e8f6;color:#62718a;font-size:13px;line-height:1.7}
    .floating{
      position:fixed;right:16px;bottom:18px;z-index:70;display:grid;gap:10px
    }
    .float-btn{
      width:48px;height:48px;border-radius:16px;display:grid;place-items:center;color:#fff;font-weight:800;
      background:linear-gradient(135deg,var(--brand),var(--brand-3));box-shadow:0 12px 24px rgba(29,111,255,.28)
    }
    .float-card{
      position:fixed;right:16px;bottom:76px;z-index:69;width:min(320px,calc(100vw - 32px));
      background:#fff;border:1px solid #e3e9f6;border-radius:22px;box-shadow:var(--shadow);padding:14px;display:none
    }
    .float-card.show{display:block;animation:pop .22s ease}
    @keyframes pop{from{transform:translateY(8px);opacity:0}to{transform:translateY(0);opacity:1}}
    .float-card .row{display:flex;gap:12px;align-items:center}
    .float-card img{width:88px;height:88px;object-fit:cover;border-radius:16px;border:1px solid #e4ebf8}
    .small{font-size:13px;color:var(--muted);line-height:1.7}
    .scroll-reveal{opacity:0;transform:translateY(18px);transition:all .55s ease}
    .scroll-reveal.in{opacity:1;transform:none}
    .anchors{display:flex;flex-wrap:wrap;gap:10px}
    .anchor{font-size:13px;padding:9px 12px;border-radius:999px;background:#fff;border:1px solid #dee6f4;color:#31415f}
    .mobile-panel{display:none}
    .comparison-card{display:grid;grid-template-columns:1.2fr .8fr;gap:16px}
    @media (max-width: 1024px){
      .hero-grid,.grid-3,.grid-2,.stats,.reviews,.media-grid,.article-list,.footer-grid,.comparison-card{grid-template-columns:1fr}
      .section-head{align-items:start;flex-direction:column}
      .fields{grid-template-columns:1fr}
    }
    @media (max-width: 860px){
      .menu-toggle{display:inline-flex}
      .nav-links,.nav-cta{display:none}
      .mobile-panel{
        display:none;padding:0 0 18px
      }
      .mobile-panel.open{display:block}
      .mobile-links{
        display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;
        padding:16px 0 0
      }
      .mobile-links a,.mobile-links button{
        width:100%;text-align:center;padding:12px 10px;border-radius:14px;border:1px solid var(--line);
        background:#fff;color:#24324d;font-weight:700
      }
      .hero-shell{padding:20px}
      .hero{padding-top:24px}
    }
    @media (max-width: 560px){
      .container{padding:0 14px}
      .hero-shell{border-radius:24px}
      h1{font-size:30px}
      .section-head h2{font-size:24px}
      .metric-grid,.step{grid-template-columns:1fr}
      .step .k{max-width:88px}
      .mobile-links{grid-template-columns:1fr}
      .chip{font-size:12px}
      .btn{width:100%}
      .hero-actions{display:grid}
      .float-btn{width:46px;height:46px}
    }