:root{
      --bg:#f7f9fc;
      --panel:#ffffff;
      --panel2:#f3f7ff;
      --text:#182230;
      --muted:#5f6b7a;
      --line:#e4ebf5;
      --brand:#2457ff;
      --brand2:#ff7b54;
      --brand3:#14b8a6;
      --shadow:0 18px 45px rgba(26, 43, 72, .08);
      --radius:20px;
      --radius-sm:14px;
      --max: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",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 15% 10%, rgba(36,87,255,.12), transparent 30%),
        radial-gradient(circle at 90% 0%, rgba(255,123,84,.14), transparent 24%),
        linear-gradient(180deg, #fbfdff 0%, #f7f9fc 34%, #f7f9fc 100%);
      line-height:1.65;
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--max), calc(100% - 32px)); margin:0 auto}
    .topbar{
      position:sticky; top:0; z-index:40;
      background:rgba(247,249,252,.82); backdrop-filter: blur(14px);
      border-bottom:1px solid rgba(228,235,245,.8);
    }
    .nav{
      display:flex; align-items:center; justify-content:space-between; gap:16px;
      padding:12px 0;
    }
    .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; box-shadow:0 8px 20px rgba(0,0,0,.06)}
    .brand strong{display:block; font-size:18px; line-height:1.1}
    .brand span{display:block; font-size:12px; color:var(--muted)}
    .nav-links{display:flex; align-items:center; gap:18px; flex-wrap:wrap; justify-content:flex-end}
    .nav-links a{font-size:14px; color:#2b3647; padding:8px 10px; border-radius:999px}
    .nav-links a:hover,.nav-links a:focus{background:#eef4ff; color:var(--brand)}
    .nav-cta{display:flex; align-items:center; gap:10px}
    .btn{
      display:inline-flex; align-items:center; justify-content:center; gap:8px;
      border:none; border-radius:999px; padding:12px 18px; font-weight:700; cursor:pointer;
      transition:.2s ease; box-shadow:none;
    }
    .btn-primary{background:linear-gradient(135deg, var(--brand), #4d7cff); color:#fff; box-shadow:0 12px 28px rgba(36,87,255,.22)}
    .btn-secondary{background:#fff; color:var(--text); border:1px solid var(--line)}
    .btn:hover{transform:translateY(-1px); box-shadow:var(--shadow)}
    .menu-toggle{display:none; background:#fff; border:1px solid var(--line); width:44px; height:44px; border-radius:14px}
    .hero{padding:46px 0 20px}
    .hero-grid{display:grid; grid-template-columns:1.25fr .95fr; gap:24px; align-items:stretch}
    .hero-copy{
      background:linear-gradient(135deg, rgba(255,255,255,.96), rgba(243,247,255,.96));
      border:1px solid rgba(228,235,245,.9); border-radius:28px; padding:34px; box-shadow:var(--shadow); position:relative; overflow:hidden;
    }
    .hero-copy:before{
      content:""; position:absolute; inset:auto -80px -80px auto; width:220px; height:220px; border-radius:50%;
      background:radial-gradient(circle, rgba(36,87,255,.16), transparent 65%);
    }
    .eyebrow{display:inline-flex; align-items:center; gap:8px; padding:8px 12px; border-radius:999px; background:#eef4ff; color:#244bdb; font-size:13px; font-weight:700}
    h1{margin:18px 0 14px; font-size:clamp(30px, 5vw, 52px); line-height:1.08; letter-spacing:-.02em}
    .lead{margin:0; color:var(--muted); font-size:16px; max-width:62ch}
    .hero-actions{display:flex; flex-wrap:wrap; gap:12px; margin-top:22px}
    .hero-points{display:grid; grid-template-columns:repeat(3, minmax(0,1fr)); gap:12px; margin-top:24px}
    .mini{
      background:#fff; border:1px solid var(--line); border-radius:18px; padding:16px;
    }
    .mini b{display:block; font-size:18px}
    .mini span{display:block; font-size:13px; color:var(--muted); margin-top:4px}
    .hero-side{
      display:grid; gap:12px; align-content:start;
    }
    .glass-card{
      background:linear-gradient(160deg, rgba(255,255,255,.95), rgba(239,246,255,.92));
      border:1px solid rgba(228,235,245,.9); border-radius:24px; padding:22px; box-shadow:var(--shadow);
    }
    .metric-grid{display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:12px}
    .metric{
      padding:16px; border-radius:18px; background:linear-gradient(180deg, #ffffff, #f7fbff); border:1px solid var(--line)
    }
    .metric b{display:block; font-size:22px}
    .metric span{font-size:13px; color:var(--muted)}
    .section{padding:18px 0}
    .section-head{display:flex; align-items:end; justify-content:space-between; gap:16px; margin-bottom:16px}
    .section-head h2{margin:0; font-size:clamp(22px, 2.8vw, 32px)}
    .section-head p{margin:0; color:var(--muted); max-width:68ch}
    .grid-4{display:grid; grid-template-columns:repeat(4, minmax(0,1fr)); gap:14px}
    .card{
      background:var(--panel); border:1px solid var(--line); border-radius:22px; padding:20px; box-shadow:0 10px 24px rgba(24,34,48,.04);
      transition:.22s ease; height:100%;
    }
    .card:hover{transform:translateY(-3px); box-shadow:var(--shadow)}
    .icon{
      width:44px; height:44px; border-radius:14px; display:grid; place-items:center; margin-bottom:12px;
      background:linear-gradient(135deg, rgba(36,87,255,.12), rgba(20,184,166,.12)); color:var(--brand); font-weight:900;
    }
    .card h3{margin:0 0 8px; font-size:18px}
    .card p{margin:0; color:var(--muted)}
    .chips{display:flex; flex-wrap:wrap; gap:10px}
    .chip{padding:8px 12px; border-radius:999px; background:#fff; border:1px solid var(--line); color:#344356; font-size:13px}
    .two-col{display:grid; grid-template-columns:1fr 1fr; gap:14px}
    .timeline{display:grid; gap:12px}
    .step{display:flex; gap:14px; padding:18px; border:1px solid var(--line); border-radius:18px; background:#fff}
    .step-num{width:34px; height:34px; border-radius:50%; background:#eef4ff; color:var(--brand); display:grid; place-items:center; font-weight:800; flex:0 0 auto}
    .step h3{margin:0 0 6px; font-size:16px}
    .step p{margin:0; color:var(--muted); font-size:14px}
    .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 14px; text-align:left; border-bottom:1px solid var(--line); vertical-align:top}
    th{background:#f7faff; color:#243246}
    tr:last-child td{border-bottom:none}
    .badge-good{color:#0f766e; font-weight:700}
    .badge-warm{color:#b45309; font-weight:700}
    .faq details{
      background:#fff; border:1px solid var(--line); border-radius:18px; padding:0 18px; box-shadow:0 10px 24px rgba(24,34,48,.04)
    }
    .faq summary{cursor:pointer; padding:16px 0; font-weight:700; list-style:none}
    .faq summary::-webkit-details-marker{display:none}
    .faq p{margin:0 0 16px; color:var(--muted)}
    .quotes{display:grid; grid-template-columns:repeat(3, minmax(0,1fr)); gap:14px}
    .quote{position:relative}
    .quote .role{font-size:13px; color:var(--brand)}
    .quote p{color:var(--text); margin:10px 0 14px}
    .quote .name{color:var(--muted); font-size:13px}
    .articles{display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:14px}
    .article a{display:block; font-weight:700; margin-bottom:8px}
    .article p{margin:0; color:var(--muted)}
    .gallery{display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:14px}
    .gallery img{border-radius:20px; border:1px solid var(--line); background:#fff; box-shadow:var(--shadow)}
    .form-grid{display:grid; grid-template-columns:1.1fr .9fr; gap:14px}
    form{
      background:#fff; border:1px solid var(--line); border-radius:24px; padding:22px; box-shadow:var(--shadow)
    }
    .field-grid{display:grid; grid-template-columns:repeat(2, minmax(0,1fr)); gap:12px}
    label{display:block; font-size:13px; color:#324154; margin-bottom:8px; font-weight:700}
    input, select, textarea{
      width:100%; border:1px solid #d8e2ef; background:#fbfcfe; color:var(--text); border-radius:14px; padding:13px 14px; font:inherit; outline:none;
    }
    textarea{min-height:120px; resize:vertical}
    input:focus, select:focus, textarea:focus{border-color:#8aa6ff; box-shadow:0 0 0 4px rgba(36,87,255,.10)}
    .sidebox{
      background:linear-gradient(180deg, #ffffff, #f6fbff); border:1px solid var(--line); border-radius:24px; padding:22px; box-shadow:var(--shadow)
    }
    .sidebox ul{margin:12px 0 0; padding-left:18px; color:var(--muted)}
    .footer{
      margin-top:18px; padding:24px 0 30px; background:#eef4ff; border-top:1px solid #d9e5ff;
      color:#1f2b3c;
    }
    .footer a{color:#244bdb}
    .footer-grid{display:grid; grid-template-columns:1.2fr .8fr .9fr; gap:16px; align-items:start}
    .footer small{color:#516072}
    .tagcloud{display:flex; flex-wrap:wrap; gap:10px}
    .floating{
      position:fixed; right:16px; bottom:16px; z-index:50; display:flex; flex-direction:column; gap:10px;
    }
    .float-btn{
      width:50px; height:50px; border-radius:16px; display:grid; place-items:center; background:#fff; border:1px solid var(--line);
      box-shadow:var(--shadow); cursor:pointer; color:var(--brand); font-weight:900;
    }
    .float-panel{
      position:fixed; right:16px; bottom:78px; z-index:49; width:min(320px, calc(100vw - 32px));
      background:#fff; border:1px solid var(--line); border-radius:22px; box-shadow:var(--shadow); padding:18px; display:none;
    }
    .float-panel.open{display:block}
    .float-panel h3{margin:0 0 10px}
    .float-panel img{width:120px; border-radius:16px; border:1px solid var(--line); margin-top:10px}
    .scroll-reveal{opacity:0; transform:translateY(12px); transition:.55s ease}
    .scroll-reveal.visible{opacity:1; transform:none}
    .topline{display:flex; gap:12px; flex-wrap:wrap; align-items:center; margin-top:16px}
    .pill{padding:8px 12px; border-radius:999px; background:#eef8f6; color:#0f766e; font-size:13px; font-weight:700}
    .compare-badge{display:inline-flex; align-items:center; gap:8px; padding:10px 14px; border-radius:14px; background:#f5f8ff; border:1px solid var(--line)}
    .subtle{color:var(--muted)}
    .anchor{scroll-margin-top:92px}
    @media (max-width: 980px){
      .hero-grid,.grid-4,.two-col,.quotes,.articles,.form-grid,.footer-grid,.gallery{grid-template-columns:1fr}
      .hero-points{grid-template-columns:1fr}
      .nav-links{display:none}
      .menu-toggle{display:inline-grid; place-items:center}
      .nav.open .nav-links{
        display:flex; position:absolute; left:16px; right:16px; top:66px; flex-direction:column; align-items:flex-start;
        background:#fff; border:1px solid var(--line); border-radius:18px; padding:12px; box-shadow:var(--shadow);
      }
      .nav{position:relative}
      .field-grid{grid-template-columns:1fr}
    }