:root{
      --bg:#f7f8fc;
      --surface:#ffffff;
      --surface-2:#f1f5ff;
      --line:#dce3f2;
      --text:#142033;
      --muted:#5b6b82;
      --brand:#4b6bff;
      --brand2:#00b8d9;
      --brand3:#8a5cff;
      --warm:#ff9f43;
      --good:#1f9d6b;
      --shadow:0 18px 42px rgba(20,32,51,.08);
      --shadow2:0 10px 24px rgba(75,107,255,.14);
      --radius:20px;
      --radius-sm:14px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(75,107,255,.12), transparent 28%),
        radial-gradient(circle at top right, rgba(0,184,217,.10), transparent 24%),
        linear-gradient(180deg,#f9fbff 0%, #f6f8fd 48%, #f7f8fc 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(100%, var(--container));margin:0 auto;padding:0 18px}
    .topbar{
      position:sticky;top:0;z-index:50;
      backdrop-filter:blur(14px);
      background:rgba(247,248,252,.82);
      border-bottom:1px solid rgba(220,227,242,.8);
    }
    header .nav{
      display:flex;align-items:center;justify-content:space-between;gap:18px;
      min-height:72px;
    }
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .brand img{width:42px;height:42px;object-fit:contain;border-radius:10px;background:#fff;padding:4px;border:1px solid var(--line)}
    .brand-text{display:flex;flex-direction:column;min-width:0}
    .brand-text strong{font-size:16px;line-height:1.1}
    .brand-text span{font-size:12px;color:var(--muted);margin-top:3px}
    .menu{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    .menu a{font-size:14px;color:var(--text);padding:8px 10px;border-radius:999px;transition:.25s ease}
    .menu a:hover,.menu a.active{background:rgba(75,107,255,.10);color:var(--brand)}
    .nav-actions{display:flex;align-items:center;gap:10px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      border:1px solid transparent;border-radius:999px;padding:12px 18px;
      font-weight:700;cursor:pointer;transition:.25s ease;white-space:nowrap;
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand3));color:#fff;box-shadow:var(--shadow2)}
    .btn-primary:hover{transform:translateY(-2px);filter:saturate(1.05)}
    .btn-soft{background:#fff;border-color:var(--line);color:var(--text)}
    .btn-soft:hover{border-color:rgba(75,107,255,.35);transform:translateY(-2px)}
    .burger{display:none;border:1px solid var(--line);background:#fff;border-radius:14px;width:44px;height:44px;align-items:center;justify-content:center;cursor:pointer}
    .burger span{display:block;width:18px;height:2px;background:var(--text);position:relative}
    .burger span:before,.burger span:after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text)}
    .burger span:before{top:-6px}.burger span:after{top:6px}
    main{overflow:hidden}
    .hero{padding:54px 0 24px}
    .hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:24px;align-items:stretch}
    .hero-copy{
      background:
        linear-gradient(135deg, rgba(75,107,255,.09), rgba(0,184,217,.08)),
        rgba(255,255,255,.72);
      border:1px solid rgba(220,227,242,.9);
      border-radius:28px;
      padding:34px;
      box-shadow:var(--shadow);
      position:relative;overflow:hidden;
    }
    .hero-copy:before{
      content:"";position:absolute;inset:auto -30px -60px auto;width:220px;height:220px;border-radius:50%;
      background:radial-gradient(circle, rgba(75,107,255,.22), transparent 68%);
      pointer-events:none;
    }
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);color:var(--brand);font-size:13px;font-weight:700}
    h1{font-size:clamp(34px,5vw,54px);line-height:1.08;margin:18px 0 14px;letter-spacing:-.02em}
    .hero p{font-size:16px;line-height:1.8;color:var(--muted);margin:0}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
    .hero-meta{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:26px}
    .mini-stat{
      background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px 14px;
      box-shadow:0 10px 24px rgba(20,32,51,.05)
    }
    .mini-stat strong{display:block;font-size:22px}
    .mini-stat span{font-size:13px;color:var(--muted)}
    .hero-side{
      display:grid;gap:14px;
      grid-template-rows:auto auto 1fr;
    }
    .glass-card{
      background:rgba(255,255,255,.82);
      border:1px solid rgba(220,227,242,.9);
      border-radius:24px;
      padding:22px;
      box-shadow:var(--shadow);
    }
    .headline-row{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:14px}
    .headline-row h2,.section-title h2{margin:0;font-size:clamp(24px,3vw,34px);line-height:1.15}
    .headline-row small,.section-sub{color:var(--muted)}
    .model-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{
      padding:9px 12px;border-radius:999px;background:linear-gradient(180deg,#fff,#f4f7ff);
      border:1px solid var(--line);font-size:13px;color:#2a3550;box-shadow:0 8px 16px rgba(20,32,51,.04)
    }
    .tag.accent{background:linear-gradient(135deg,rgba(75,107,255,.14),rgba(138,92,255,.10));border-color:rgba(75,107,255,.20);color:#2541b2}
    .section{padding:18px 0 26px}
    .section-title{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:18px}
    .section-title p{margin:10px 0 0;color:var(--muted);line-height:1.7;max-width:70ch}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    .card{
      background:var(--surface);
      border:1px solid var(--line);
      border-radius:var(--radius);
      padding:22px;
      box-shadow:0 10px 24px rgba(20,32,51,.05);
      transition:.25s ease;
    }
    .card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .icon{
      width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
      background:linear-gradient(135deg,rgba(75,107,255,.14),rgba(0,184,217,.14));color:var(--brand);font-size:22px;margin-bottom:14px
    }
    .card h3{margin:0 0 10px;font-size:18px}
    .card p,.card li{color:var(--muted);line-height:1.75}
    .metric{
      display:flex;flex-direction:column;gap:6px;
      min-height:132px;
      background:linear-gradient(180deg,#fff, #f8fbff);
    }
    .metric strong{font-size:32px;line-height:1}
    .metric span{font-size:14px;color:var(--muted)}
    .split{
      display:grid;grid-template-columns:1.02fr .98fr;gap:16px;align-items:stretch
    }
    .feature-list{display:grid;gap:10px;margin:0;padding:0;list-style:none}
    .feature-list li{display:flex;gap:10px;align-items:flex-start}
    .check{flex:0 0 22px;height:22px;border-radius:50%;background:rgba(31,157,107,.12);color:var(--good);display:grid;place-items:center;font-size:14px;margin-top:2px}
    .step-list{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .step{
      position:relative;background:linear-gradient(180deg,#fff,#fbfcff);border:1px solid var(--line);border-radius:20px;padding:20px
    }
    .step .num{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:12px;background:linear-gradient(135deg,var(--brand),var(--brand3));color:#fff;font-weight:700;margin-bottom:12px}
    .table-wrap{overflow:auto;border:1px solid var(--line);border-radius:22px;background:#fff;box-shadow:var(--shadow)}
    table{width:100%;border-collapse:collapse;min-width:860px}
    th,td{padding:16px 18px;border-bottom:1px solid #edf1f7;text-align:left;vertical-align:top}
    th{background:#f7f9ff;color:#25324b;font-size:14px}
    td{color:var(--muted);font-size:14px}
    .pill{display:inline-flex;padding:6px 10px;border-radius:999px;background:rgba(75,107,255,.10);color:var(--brand);font-weight:700;font-size:12px}
    .compare-banner{
      display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
      padding:20px;border-radius:22px;background:linear-gradient(135deg,rgba(75,107,255,.10),rgba(0,184,217,.08));border:1px solid rgba(75,107,255,.16)
    }
    .faq-list{display:grid;gap:12px}
    details{
      background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:0 8px 18px rgba(20,32,51,.04);overflow:hidden
    }
    summary{
      list-style:none;cursor:pointer;padding:18px 20px;font-weight:700;display:flex;justify-content:space-between;gap:12px;align-items:center
    }
    summary::-webkit-details-marker{display:none}
    summary:after{content:"＋";color:var(--brand);font-size:20px;line-height:1}
    details[open] summary:after{content:"－"}
    details .answer{padding:0 20px 18px;color:var(--muted);line-height:1.8}
    .review{
      display:flex;flex-direction:column;gap:12px
    }
    .review-top{display:flex;align-items:center;justify-content:space-between;gap:12px}
    .avatar{
      width:42px;height:42px;border-radius:50%;display:grid;place-items:center;
      background:linear-gradient(135deg,rgba(75,107,255,.16),rgba(138,92,255,.16));color:var(--brand);font-weight:800
    }
    .stars{color:#f5a623;letter-spacing:1px}
    .timeline{display:grid;gap:14px}
    .timeline-item{
      display:grid;grid-template-columns:92px 1fr;gap:14px;align-items:start;padding:18px;border-radius:18px;background:#fff;border:1px solid var(--line)
    }
    .timeline-item strong{display:block;font-size:16px;margin-bottom:6px}
    .sidebar-box{
      display:grid;gap:14px
    }
    .form{
      display:grid;gap:12px
    }
    .field{display:grid;gap:6px}
    .field label{font-size:14px;font-weight:700}
    .field input,.field select,.field textarea{
      width:100%;border:1px solid #dbe3f1;background:#fff;border-radius:14px;padding:13px 14px;font:inherit;color:var(--text);outline:none;transition:.2s ease
    }
    .field input:focus,.field select:focus,.field textarea:focus{border-color:rgba(75,107,255,.5);box-shadow:0 0 0 4px rgba(75,107,255,.08)}
    .field textarea{min-height:110px;resize:vertical}
    .footer{
      margin-top:16px;padding:26px 0 32px;border-top:1px solid rgba(220,227,242,.9);background:rgba(255,255,255,.55)
    }
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:18px;align-items:start}
    .footer a{color:var(--brand)}
    .link-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .subtle{color:var(--muted);line-height:1.8}
    .mobile-only{display:none}
    .floating{
      position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px
    }
    .float-btn{
      width:50px;height:50px;border-radius:16px;display:grid;place-items:center;
      background:linear-gradient(135deg,var(--brand),var(--brand3));color:#fff;box-shadow:var(--shadow2)
    }
    .float-panel{
      position:fixed;right:16px;bottom:78px;z-index:59;width:min(320px,calc(100vw - 32px));
      background:#fff;border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow);padding:16px;display:none
    }
    .float-panel.show{display:block;animation:pop .22s ease}
    @keyframes pop{from{transform:translateY(8px);opacity:.4}to{transform:translateY(0);opacity:1}}
    .reveal{opacity:0;transform:translateY(18px);transition:.55s ease}
    .reveal.in{opacity:1;transform:translateY(0)}
    .scroll-tag-row{display:flex;flex-wrap:wrap;gap:10px}
    .price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .price{
      background:linear-gradient(180deg,#fff,#f7fbff);
      border:1px solid var(--line);border-radius:22px;padding:22px
    }
    .price strong{display:block;font-size:28px;margin:10px 0 8px}
    .price ul{margin:0;padding-left:18px}
    .nav-mobile-panel{display:none}
    @media (max-width: 980px){
      .hero-grid,.split,.footer-grid,.grid-4,.grid-3,.grid-2,.price-grid,.step-list{grid-template-columns:1fr}
      .menu,.nav-actions{display:none}
      .burger{display:inline-flex}
      .nav-mobile-panel{
        display:none;padding:0 0 16px
      }
      .nav-mobile-panel.open{display:block}
      .nav-mobile-panel .menu{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
      .nav-mobile-panel .nav-actions{display:flex;display:none}
      .mobile-only{display:inline-flex}
      .hero{padding-top:24px}
      .hero-copy{padding:26px}
      .hero-meta{grid-template-columns:1fr}
      .timeline-item{grid-template-columns:1fr}
    }
    @media (max-width: 560px){
      .container{padding:0 14px}
      .hero-copy,.glass-card,.card,.price,.timeline-item,.step{border-radius:18px}
      h1{font-size:30px}
      .section-title{flex-direction:column;align-items:flex-start}
      .nav{min-height:66px}
      .brand-text span{display:none}
    }