:root{
      --bg:#f6f7fb;
      --bg2:#eef3ff;
      --card:#ffffff;
      --text:#182233;
      --muted:#5f6b84;
      --line:#dbe3f0;
      --brand:#2d6cff;
      --brand2:#7c4dff;
      --accent:#ff8a4c;
      --shadow:0 16px 40px rgba(31,54,97,.10);
      --radius:22px;
      --radius-sm:16px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;background:
      radial-gradient(circle at top left, rgba(45,108,255,.10), transparent 32%),
      radial-gradient(circle at top right, rgba(255,138,76,.11), transparent 28%),
      linear-gradient(180deg, #fbfcff 0%, #f6f7fb 100%);
      color:var(--text);line-height:1.65}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(100%,var(--container));margin:0 auto;padding:0 20px}
    .site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.84);backdrop-filter:blur(16px);border-bottom:1px solid rgba(219,227,240,.75)}
    .nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:74px}
    .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;box-shadow:0 6px 18px rgba(45,108,255,.12)}
    .brand .name{font-weight:800;font-size:1.05rem;white-space:nowrap}
    .brand .tag{font-size:.82rem;color:var(--muted);display:block;white-space:nowrap}
    .nav-toggle{display:none;border:1px solid var(--line);background:#fff;color:var(--text);border-radius:14px;padding:10px 12px}
    .nav-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:.95rem;color:#30405d;padding:8px 10px;border-radius:999px;transition:.25s ease}
    .nav-links a:hover,.nav-links a:focus-visible{background:#edf3ff;color:#1847b8;outline:none}
    .home-btn{display:inline-flex;align-items:center;gap:8px;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff !important;padding:10px 16px !important;box-shadow:0 12px 24px rgba(45,108,255,.18)}
    .home-btn:hover{transform:translateY(-1px)}
    main{overflow:hidden}
    section{padding:72px 0}
    .hero{padding:34px 0 64px;position:relative}
    .hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:24px;align-items:stretch}
    .hero-copy{padding:32px;background:
      linear-gradient(135deg, rgba(255,255,255,.94), rgba(245,249,255,.92));
      border:1px solid rgba(219,227,240,.9);border-radius:28px;box-shadow:var(--shadow);position:relative;overflow:hidden}
    .hero-copy::before,.hero-copy::after{content:"";position:absolute;border-radius:50%;pointer-events:none}
    .hero-copy::before{width:260px;height:260px;background:radial-gradient(circle, rgba(45,108,255,.12), transparent 66%);right:-80px;top:-70px}
    .hero-copy::after{width:180px;height:180px;background:radial-gradient(circle, rgba(255,138,76,.12), transparent 66%);left:-60px;bottom:-60px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;background:#eef4ff;color:#2557cc;padding:8px 12px;border-radius:999px;font-size:.9rem;font-weight:700}
    h1{margin:16px 0 14px;font-size:clamp(2rem,4vw,3.7rem);line-height:1.08;letter-spacing:-.03em}
    .lead{margin:0;color:var(--muted);font-size:1.02rem;max-width:58ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 18px;border-radius:14px;border:1px solid transparent;font-weight:700;transition:transform .2s ease, box-shadow .2s ease, background .2s ease}
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:0 14px 28px rgba(45,108,255,.2)}
    .btn-secondary{background:#fff;border-color:var(--line);color:var(--text)}
    .btn:hover{transform:translateY(-2px)}
    .hero-stats{margin-top:28px;display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .mini-stat{background:rgba(255,255,255,.72);border:1px solid rgba(219,227,240,.9);border-radius:18px;padding:16px}
    .mini-stat strong{display:block;font-size:1.4rem}
    .mini-stat span{color:var(--muted);font-size:.92rem}
    .hero-side{display:grid;gap:14px}
    .side-card{background:linear-gradient(180deg,#ffffff,#f7f9ff);border:1px solid rgba(219,227,240,.9);border-radius:24px;padding:22px;box-shadow:var(--shadow)}
    .side-card h2{margin:0 0 10px;font-size:1.15rem}
    .side-card p{margin:0;color:var(--muted)}
    .side-list{margin:14px 0 0;padding:0;list-style:none;display:grid;gap:10px}
    .side-list li{display:flex;gap:10px;align-items:flex-start;color:#324156}
    .dot{width:10px;height:10px;border-radius:50%;margin-top:.46em;background:linear-gradient(135deg,var(--accent),#ffbf7a);flex:none}
    .badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
    .badge{padding:8px 12px;border-radius:999px;background:#f1f5ff;border:1px solid #dbe3f0;color:#2f4f96;font-size:.88rem}
    .section-title{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:22px}
    .section-title h2{margin:0;font-size:clamp(1.5rem,2.7vw,2.3rem)}
    .section-title p{margin:0;color:var(--muted);max-width:62ch}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
    .card{background:rgba(255,255,255,.92);border:1px solid rgba(219,227,240,.9);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px;transition:transform .2s ease, box-shadow .2s ease}
    .card:hover{transform:translateY(-4px);box-shadow:0 18px 44px rgba(31,54,97,.14)}
    .card h3{margin:0 0 10px;font-size:1.12rem}
    .card p{margin:0;color:var(--muted)}
    .metric{font-size:2rem;font-weight:800;color:#1d3358}
    .sub{color:var(--muted);font-size:.92rem}
    .chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
    .chip{background:#f6f8ff;border:1px solid #dbe3f0;border-radius:999px;padding:8px 12px;font-size:.88rem;color:#36507f}
    .timeline{display:grid;gap:14px}
    .step{display:flex;gap:14px;padding:18px;border-radius:18px;background:#fff;border:1px solid var(--line)}
    .step .num{width:38px;height:38px;display:grid;place-items:center;border-radius:12px;background:linear-gradient(135deg,#2d6cff,#7c4dff);color:#fff;font-weight:800;flex:none}
    .step h3{margin:0 0 6px}
    .step p{margin:0;color:var(--muted)}
    .compare-wrap{overflow:auto;border-radius:22px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow)}
    table{width:100%;border-collapse:collapse;min-width:860px}
    th,td{padding:16px 14px;border-bottom:1px solid var(--line);vertical-align:top;text-align:left}
    th{background:#f7f9ff;color:#20314d;font-size:.95rem}
    td{color:#324156}
    .scorebox{display:flex;align-items:center;gap:16px;background:linear-gradient(135deg,#ffffff,#f6f8ff);border:1px solid var(--line);border-radius:24px;padding:22px;box-shadow:var(--shadow)}
    .scorebox .star{font-size:2.2rem;color:#ff9f2f}
    .scorebox strong{font-size:1.15rem}
    .review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .avatar{width:46px;height:46px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,#eaf1ff,#fff2ea);font-weight:800;color:#25457e}
    .review-head{display:flex;align-items:center;gap:12px;margin-bottom:12px}
    .review-head span{color:var(--muted);font-size:.92rem}
    .faq{display:grid;gap:12px}
    details{background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:0 8px 24px rgba(31,54,97,.06);overflow:hidden}
    summary{list-style:none;cursor:pointer;padding:18px 20px;font-weight:700;color:#20314d}
    summary::-webkit-details-marker{display:none}
    details p{padding:0 20px 18px;margin:0;color:var(--muted)}
    .article-list{display:grid;gap:14px}
    .article-item{display:flex;justify-content:space-between;gap:18px;padding:18px 20px;border-radius:18px;border:1px solid var(--line);background:#fff}
    .article-item strong{display:block;margin-bottom:6px}
    .article-item span{color:var(--muted);font-size:.92rem}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .form-card{background:linear-gradient(180deg,#fff,#f8fbff);border:1px solid var(--line);border-radius:28px;padding:24px;box-shadow:var(--shadow)}
    .field{display:flex;flex-direction:column;gap:8px}
    .field label{font-weight:700;color:#263651;font-size:.95rem}
    .field input,.field select,.field textarea{width:100%;border:1px solid #cfd8e8;border-radius:14px;padding:13px 14px;font:inherit;background:#fff;color:var(--text);outline:none;transition:border-color .2s ease, box-shadow .2s ease}
    .field textarea{min-height:124px;resize:vertical}
    .field input:focus,.field select:focus,.field textarea:focus{border-color:#7b98ff;box-shadow:0 0 0 4px rgba(45,108,255,.12)}
    .form-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:18px}
    .tag-cloud,.price-box,.network{display:flex;flex-wrap:wrap;gap:12px}
    .tag-cloud .chip,.network .chip{background:#fff}
    .footer{padding:34px 0 26px;background:#17243b;color:#e8eefc}
    .footer a{color:#dbe9ff}
    .footer .muted{color:#b8c5dd}
    .footer-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:18px;align-items:start}
    .footer-bottom{margin-top:20px;padding-top:18px;border-top:1px solid rgba(255,255,255,.12);font-size:.92rem;color:#b7c2d8}
    .floating{position:fixed;right:18px;bottom:18px;z-index:60;display:grid;gap:10px}
    .float-btn{width:52px;height:52px;border-radius:16px;display:grid;place-items:center;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:0 16px 30px rgba(45,108,255,.24);border:none;cursor:pointer}
    .service-float{position:fixed;left:18px;bottom:18px;z-index:60;display:flex;gap:10px;align-items:center}
    .service-float .qr{width:54px;height:54px;border-radius:16px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow);background:#fff}
    .service-float .qr img{width:100%;height:100%;object-fit:cover}
    .service-float .tip{background:#fff;border:1px solid var(--line);border-radius:16px;padding:10px 12px;box-shadow:var(--shadow);font-size:.92rem}
    .scroll-reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease, transform .6s ease}
    .scroll-reveal.is-visible{opacity:1;transform:translateY(0)}
    .hero-copy .scroll-reveal{opacity:1;transform:none}
    @media (max-width: 980px){
      .hero-grid,.grid-3,.grid-2,.review-grid,.footer-grid{grid-template-columns:1fr}
      .section-title{align-items:flex-start;flex-direction:column}
      .nav-toggle{display:inline-flex}
      .nav-links{display:none;position:absolute;left:20px;right:20px;top:74px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:14px;box-shadow:var(--shadow)}
      .nav-links.open{display:flex;flex-direction:column;align-items:stretch}
      .nav-links a{padding:12px 14px}
      .hero-stats{grid-template-columns:1fr}
      .form-grid{grid-template-columns:1fr}
      .service-float{left:14px;right:auto;bottom:86px}
    }