:root{
      --bg:#eef3ff;
      --panel:#ffffff;
      --panel-2:#f7f9ff;
      --text:#162033;
      --muted:#5c6880;
      --line:#d9e2f3;
      --brand:#165dff;
      --brand-2:#0b3fb8;
      --accent:#2dd4bf;
      --gold:#ffb020;
      --shadow:0 18px 45px rgba(22,93,255,.12);
      --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,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(22,93,255,.12), transparent 30%),
        radial-gradient(circle at 80% 10%, rgba(45,212,191,.14), transparent 26%),
        linear-gradient(180deg,#f7faff 0%, #edf3ff 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(100% - 32px, var(--container));margin:0 auto}
    header{position:sticky;top:0;z-index:50;background:rgba(245,248,255,.85);backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid rgba(217,226,243,.8)}
    .nav{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0}
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .brand img{width:44px;height:44px;object-fit:contain;border-radius:12px;background:#fff;padding:4px;box-shadow:0 8px 20px rgba(22,93,255,.12)}
    .brand .meta{min-width:0}
    .brand strong{display:block;font-size:18px;line-height:1.2}
    .brand span{display:block;font-size:12px;color:var(--muted);margin-top:2px}
    .nav-links{display:flex;align-items:center;gap:16px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:14px;color:#33415c;padding:8px 10px;border-radius:999px;transition:.2s}
    .nav-links a:hover{background:#e9efff;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:0;border-radius:999px;padding:12px 18px;font-weight:700;cursor:pointer;transition:.22s ease;white-space:nowrap}
    .btn-primary{background:linear-gradient(135deg,var(--brand),#3a86ff);color:#fff;box-shadow:0 14px 30px rgba(22,93,255,.22)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 36px rgba(22,93,255,.28)}
    .btn-soft{background:#eaf1ff;color:var(--brand)}
    .menu-btn{display:none;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px}
    .hero{padding:40px 0 22px}
    .hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:22px;align-items:stretch}
    .hero-panel{background:linear-gradient(180deg,#ffffff 0%, #f6f9ff 100%);border:1px solid rgba(217,226,243,.9);border-radius:28px;padding:30px;box-shadow:var(--shadow);position:relative;overflow:hidden}
    .hero-panel::before,.hero-panel::after{content:"";position:absolute;border-radius:50%;background:rgba(22,93,255,.08);filter:blur(10px)}
    .hero-panel::before{width:220px;height:220px;right:-70px;top:-60px}
    .hero-panel::after{width:180px;height:180px;left:-80px;bottom:-90px;background:rgba(45,212,191,.12)}
    .badge{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:#e9f2ff;color:var(--brand);font-size:13px;font-weight:700}
    h1{margin:18px 0 14px;font-size:clamp(30px,4vw,54px);line-height:1.08;letter-spacing:-.03em}
    .lead{font-size:16px;line-height:1.8;color:var(--muted);max-width:60ch}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:24px 0 18px}
    .hero-points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:20px}
    .mini-card{background:rgba(255,255,255,.82);border:1px solid var(--line);border-radius:18px;padding:16px;backdrop-filter:blur(6px)}
    .mini-card strong{display:block;font-size:18px}
    .mini-card span{display:block;color:var(--muted);font-size:13px;margin-top:6px;line-height:1.6}
    .hero-side{display:grid;gap:14px}
    .side-card{background:#fff;border:1px solid var(--line);border-radius:24px;padding:22px;box-shadow:var(--shadow)}
    .side-card h3{margin:0 0 8px;font-size:20px}
    .side-card p{margin:0;color:var(--muted);line-height:1.7}
    .logo-row{display:flex;align-items:center;gap:14px;margin-top:16px}
    .logo-row img{width:68px;height:68px;object-fit:contain;border-radius:18px;background:#f7f9ff;padding:8px;border:1px solid var(--line)}
    .stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:22px 0 0}
    .stat{background:var(--panel);border:1px solid var(--line);border-radius:22px;padding:18px;box-shadow:0 12px 28px rgba(22,93,255,.08)}
    .stat b{display:block;font-size:24px;color:var(--brand);margin-bottom:6px}
    .section{padding:24px 0}
    .section h2{margin:0 0 14px;font-size:clamp(24px,2.4vw,36px);line-height:1.18}
    .section p.section-lead{margin:0 0 18px;color:var(--muted);line-height:1.8}
    .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(--panel);border:1px solid var(--line);border-radius:24px;padding:22px;box-shadow:0 10px 24px rgba(12,40,110,.06);transition:.2s ease}
    .card:hover{transform:translateY(-3px);box-shadow:0 16px 34px rgba(12,40,110,.1)}
    .card h3{margin:0 0 10px;font-size:20px}
    .card p,.card li{color:var(--muted);line-height:1.75}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag-cloud span{padding:9px 12px;border-radius:999px;background:#eef4ff;border:1px solid #d9e4ff;color:#27406d;font-size:13px}
    .workflow{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .step{position:relative}
    .step .num{width:42px;height:42px;border-radius:14px;background:linear-gradient(135deg,var(--brand),#4c8dff);color:#fff;display:grid;place-items:center;font-weight:800;margin-bottom:12px}
    .compare-wrap{overflow:auto;border-radius:20px;border:1px solid var(--line);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:920px}
    th,td{padding:16px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
    th{background:#f5f8ff;color:#24314b;font-size:14px}
    td{color:#40506b}
    .highlight{background:#eef5ff}
    .rating{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
    .stars{color:#ffb020;letter-spacing:2px;font-size:18px}
    .timeline{display:grid;gap:12px}
    .time-item{display:grid;grid-template-columns:120px 1fr;gap:14px;align-items:start;background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px}
    .time-item strong{color:var(--brand)}
    .review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .quote{font-size:15px;line-height:1.8;color:#32415b}
    .quote::before{content:"“";font-size:32px;color:var(--brand);line-height:0;vertical-align:middle}
    .article-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .article{display:flex;justify-content:space-between;gap:12px;padding:16px;border:1px solid var(--line);border-radius:18px;background:#fff}
    .article small{color:var(--muted)}
    .form{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .field{display:flex;flex-direction:column;gap:8px}
    .field.full{grid-column:1/-1}
    label{font-size:14px;font-weight:700;color:#2b3952}
    input,select,textarea{
      width:100%;border:1px solid #cfd9ec;background:#fff;border-radius:14px;padding:13px 14px;font:inherit;color:var(--text);outline:none;transition:.2s;
    }
    input:focus,select:focus,textarea:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(22,93,255,.12)}
    textarea{min-height:132px;resize:vertical}
    .footer{margin-top:18px;padding:28px 0 34px;background:#0d1a3a;color:#dbe6ff}
    .footer a{color:#ffffff}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:18px}
    .footer .card{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.12);box-shadow:none}
    .footer .card p,.footer .card li,.footer .card span{color:#dbe6ff}
    .footer h3,.footer h4{margin-top:0;color:#fff}
    .links{display:flex;flex-wrap:wrap;gap:10px}
    .links a{padding:8px 12px;border-radius:999px;background:rgba(255,255,255,.08)}
    .bottom{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;margin-top:16px;color:#b9c9ea;font-size:13px}
    .float-box{position:fixed;right:18px;bottom:18px;z-index:40;display:grid;gap:10px}
    .float-box a,.top-btn{width:52px;height:52px;border-radius:16px;display:grid;place-items:center;box-shadow:0 14px 28px rgba(0,0,0,.12)}
    .float-box a{background:linear-gradient(135deg,var(--brand),#53a1ff);color:#fff;font-weight:800}
    .top-btn{border:0;background:#fff;color:var(--brand);cursor:pointer;border:1px solid var(--line)}
    .mobile-panel{display:none}
    details{background:#fff;border:1px solid var(--line);border-radius:18px;padding:14px 16px}
    details+details{margin-top:12px}
    summary{cursor:pointer;font-weight:700;list-style:none}
    summary::-webkit-details-marker{display:none}
    .note{padding:12px 14px;border-radius:14px;background:#f2f7ff;border:1px solid #dce7ff;color:#3b4f75;font-size:14px}
    @media (max-width: 980px){
      .hero-grid,.grid-3,.grid-2,.review-grid,.footer-grid,.article-list,.stat-grid,.workflow{grid-template-columns:1fr 1fr}
      .hero-points{grid-template-columns:1fr}
      .time-item{grid-template-columns:1fr}
      .nav-links{display:none}
      .menu-btn{display:inline-grid}
      .mobile-panel{display:none;padding:0 0 16px}
      .mobile-panel.open{display:block}
      .mobile-panel .nav-links{display:grid;grid-template-columns:1fr 1fr;gap:8px;display:grid}
      .mobile-panel a{background:#fff;border:1px solid var(--line);padding:10px 12px;border-radius:12px}
    }
    @media (max-width: 720px){
      .hero,.section{padding:22px 0}
      .hero-grid,.grid-3,.grid-2,.review-grid,.footer-grid,.article-list,.stat-grid,.workflow,.form{grid-template-columns:1fr}
      .hero-panel,.side-card,.card{padding:18px}
      .nav{padding:12px 0}
      .brand strong{font-size:16px}
      .container{width:min(100% - 22px, var(--container))}
    }
    .reveal{opacity:0;transform:translateY(18px);transition:.6s ease}
    .reveal.show{opacity:1;transform:none}