:root{
      --bg:#f5f7fb;
      --bg-soft:#eef3ff;
      --card:#ffffff;
      --card-2:#f8fbff;
      --line:#dbe3f0;
      --text:#18202f;
      --muted:#5f6b7d;
      --brand:#4b63ff;
      --brand-2:#7a5cff;
      --accent:#17b3a7;
      --gold:#f2b134;
      --shadow:0 18px 50px rgba(18, 36, 78, .10);
      --shadow-soft:0 10px 24px rgba(18, 36, 78, .08);
      --radius:20px;
      --radius-sm:14px;
      --container:1200px;
    }
    *{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 top left, rgba(75,99,255,.12), transparent 28%),
        radial-gradient(circle at top right, rgba(23,179,167,.10), transparent 24%),
        linear-gradient(180deg, #f9fbff 0%, #f4f7fc 42%, #f6f8fd 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{
      width:min(var(--container), calc(100% - 32px));
      margin:0 auto;
    }
    .topbar{
      position:sticky;top:0;z-index:1000;
      backdrop-filter: blur(14px);
      background: rgba(245,247,251,.82);
      border-bottom:1px solid rgba(219,227,240,.8);
    }
    .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;object-fit:contain;border-radius:12px;background:#fff;padding:6px;box-shadow:var(--shadow-soft);
      border:1px solid rgba(219,227,240,.85);
    }
    .brand h2{
      font-size:16px;line-height:1.15;margin:0 0 2px 0;
    }
    .brand p{
      margin:0;color:var(--muted);font-size:12px;
    }
    .nav-links{
      display:flex;align-items:center;gap:16px;flex-wrap:wrap;justify-content:flex-end;
    }
    .nav-links a{
      color:var(--text);font-size:14px;padding:8px 10px;border-radius:10px;transition:.2s ease;
    }
    .nav-links a:hover,.nav-links a:focus{background:rgba(75,99,255,.08);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:1px solid transparent;border-radius:999px;
      padding:12px 18px;font-weight:700;font-size:14px;cursor:pointer;
      transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease;
      white-space:nowrap;
    }
    .btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-soft)}
    .btn-primary{
      color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand-2));
      box-shadow:0 14px 30px rgba(75,99,255,.25);
    }
    .btn-light{
      color:var(--text);background:#fff;border-color:var(--line);
    }
    .menu-toggle{
      display:none;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 12px;cursor:pointer;
    }
    .hero{
      position:relative;overflow:hidden;
      padding:46px 0 24px;
    }
    .hero::before{
      content:"";position:absolute;inset:0;
      background:
        linear-gradient(120deg, rgba(75,99,255,.10), rgba(122,92,255,.08), rgba(23,179,167,.08));
      mask: linear-gradient(180deg, rgba(0,0,0,.95), rgba(0,0,0,.55), transparent);
      pointer-events:none;
    }
    .hero-grid{
      position:relative;
      display:grid;grid-template-columns:1.2fr .8fr;gap:22px;align-items:stretch;
    }
    .hero-main,.hero-side,.panel,.card,.faq-item,.review,.article,.form-box,.compare,.timeline-item,.price-box{
      background:rgba(255,255,255,.82);
      border:1px solid rgba(219,227,240,.92);
      border-radius:var(--radius);
      box-shadow:var(--shadow-soft);
    }
    .hero-main{
      padding:34px;
      backdrop-filter: blur(10px);
    }
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      padding:8px 12px;border-radius:999px;
      background:rgba(75,99,255,.08);
      color:var(--brand);
      font-size:13px;font-weight:700;
      margin-bottom:18px;
    }
    h1{
      margin:0;
      font-size:clamp(32px, 5vw, 56px);
      line-height:1.06;
      letter-spacing:-.03em;
    }
    .hero p.lead{
      margin:18px 0 0;
      color:var(--muted);
      font-size:16px;
      line-height:1.9;
      max-width:64ch;
    }
    .hero-actions{
      display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;
    }
    .hero-points{
      display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:26px;
    }
    .mini-stat{
      padding:16px;border-radius:16px;background:linear-gradient(180deg,#fff, #f7faff);
      border:1px solid var(--line);
    }
    .mini-stat strong{display:block;font-size:20px;margin-bottom:6px;color:#24304a}
    .mini-stat span{font-size:13px;color:var(--muted);line-height:1.6}
    .hero-side{
      padding:22px;
      display:flex;flex-direction:column;gap:16px;
      backdrop-filter: blur(10px);
    }
    .side-card{
      padding:18px;border-radius:18px;background:linear-gradient(180deg, #f8fbff 0%, #ffffff 100%);
      border:1px solid var(--line);
    }
    .side-card h3{margin:0 0 10px;font-size:18px}
    .stack{
      display:flex;flex-wrap:wrap;gap:10px
    }
    .chip{
      display:inline-flex;align-items:center;gap:6px;
      border-radius:999px;padding:8px 12px;background:#fff;border:1px solid var(--line);
      font-size:13px;color:#304055;
    }
    section{padding:22px 0}
    .section-head{
      display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:16px;
    }
    .section-head h2{margin:0;font-size:28px;line-height:1.2}
    .section-head p{margin:0;color:var(--muted);max-width:64ch;line-height:1.8}
    .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{padding:22px}
    .card h3,.card h4{margin:0 0 10px}
    .card p{margin:0;color:var(--muted);line-height:1.8}
    .icon{
      width:46px;height:46px;border-radius:14px;
      display:grid;place-items:center;
      background:linear-gradient(135deg, rgba(75,99,255,.10), rgba(23,179,167,.10));
      color:var(--brand);font-size:20px;margin-bottom:14px;
    }
    .metric strong{display:block;font-size:28px;margin-bottom:4px}
    .metric span{color:var(--muted);font-size:13px}
    .flow{
      counter-reset:step;
      display:grid;grid-template-columns:repeat(5,1fr);gap:16px;
    }
    .flow .card{position:relative}
    .flow .card::before{
      counter-increment:step;
      content:"0" counter(step);
      position:absolute;top:16px;right:16px;
      color:rgba(75,99,255,.18);font-weight:800;font-size:28px;
    }
    .flow .card h3{padding-right:52px}
    .compare-wrap{overflow:auto;border-radius:var(--radius);box-shadow:var(--shadow-soft)}
    table{
      width:100%;
      border-collapse:separate;border-spacing:0;
      min-width:860px;
      background:#fff;
    }
    th,td{padding:16px 14px;border-bottom:1px solid var(--line);vertical-align:top;text-align:left}
    th{
      background:linear-gradient(180deg,#f7f9ff,#eef3ff);
      color:#22304a;font-size:14px
    }
    td{color:#334155;font-size:14px;line-height:1.7}
    tr:last-child td{border-bottom:none}
    .badge{
      display:inline-flex;align-items:center;padding:6px 10px;border-radius:999px;
      background:rgba(23,179,167,.10);color:#0d796f;font-size:12px;font-weight:700
    }
    .rating{
      display:flex;align-items:center;gap:8px;flex-wrap:wrap
    }
    .stars{color:#f2b134;letter-spacing:1px}
    .review-grid,.article-grid,.faq-list,.timeline,.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .review .meta{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}
    .review .role{color:var(--muted);font-size:13px}
    .review .quote{font-size:14px;line-height:1.8;color:#334155}
    .article h3{font-size:17px}
    .article .time{font-size:12px;color:var(--muted);margin-bottom:10px}
    .faq-item{
      overflow:hidden;
    }
    .faq-q{
      width:100%;padding:18px 20px;border:0;background:transparent;color:var(--text);
      display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:15px;font-weight:700;cursor:pointer;text-align:left;
    }
    .faq-a{
      max-height:0;overflow:hidden;padding:0 20px;color:var(--muted);line-height:1.9;transition:max-height .28s ease,padding .28s ease;
    }
    .faq-item.open .faq-a{max-height:180px;padding:0 20px 18px}
    .faq-item.open .chev{transform:rotate(180deg)}
    .chev{transition:transform .2s ease;color:var(--brand)}
    .form-box{padding:24px}
    .form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .field{display:flex;flex-direction:column;gap:8px}
    label{font-size:13px;color:#304055;font-weight:700}
    input,select,textarea{
      width:100%;border:1px solid var(--line);border-radius:14px;
      background:#fff;padding:13px 14px;font:inherit;color:var(--text);outline:none;
      transition:border-color .2s ease,box-shadow .2s ease;
    }
    input:focus,select:focus,textarea:focus{border-color:rgba(75,99,255,.65);box-shadow:0 0 0 4px rgba(75,99,255,.10)}
    textarea{min-height:120px;resize:vertical}
    .form-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:14px}
    .aside-compact{
      display:grid;grid-template-columns:1fr 1fr;gap:14px
    }
    .qrcode{
      display:flex;gap:16px;align-items:center
    }
    .qrcode img{width:120px;height:120px;object-fit:cover;border-radius:16px;border:1px solid var(--line);background:#fff}
    .links-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .links-cloud a,.tag{
      display:inline-flex;padding:8px 12px;border-radius:999px;border:1px solid var(--line);background:#fff;color:#2e3b52;font-size:13px
    }
    .footer{
      margin-top:12px;
      padding:28px 0 34px;
      border-top:1px solid rgba(219,227,240,.9);
      background:linear-gradient(180deg, rgba(255,255,255,.75), rgba(247,249,253,.92));
      color:var(--text);
    }
    .footer a{color:#243a7a}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr 1fr;gap:18px;align-items:start}
    .footer small,.footer p{color:var(--muted);line-height:1.8}
    .floating{
      position:fixed;right:18px;bottom:18px;z-index:1200;
      display:flex;flex-direction:column;gap:10px;
    }
    .float-btn{
      width:52px;height:52px;border-radius:50%;
      display:grid;place-items:center;
      background:linear-gradient(135deg,var(--brand),var(--brand-2));
      color:#fff;box-shadow:0 16px 30px rgba(75,99,255,.25);
      border:none;cursor:pointer;
    }
    .float-link{
      padding:12px 14px;border-radius:16px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-soft);
      color:var(--text);font-size:13px;font-weight:700;display:flex;align-items:center;gap:8px
    }
    .mobile-only{display:none}
    .fade-up{opacity:0;transform:translateY(14px);transition:opacity .6s ease,transform .6s ease}
    .fade-up.in{opacity:1;transform:none}
    .marquee{
      display:flex;flex-wrap:wrap;gap:10px
    }
    .note{
      color:var(--muted);font-size:13px;line-height:1.8
    }
    .table-note{
      display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-top:10px;color:var(--muted);font-size:13px
    }
    @media (max-width: 1024px){
      .hero-grid,.grid-4,.grid-3,.grid-2,.review-grid,.article-grid,.faq-list,.timeline,.price-grid,.footer-grid,.flow{grid-template-columns:repeat(2,1fr)}
      .hero-points{grid-template-columns:repeat(2,1fr)}
      .section-head{align-items:flex-start;flex-direction:column}
    }
    @media (max-width: 768px){
      .nav-links,.nav-cta{display:none}
      .menu-toggle{display:inline-flex}
      .mobile-only{display:flex}
      .nav.open .nav-links,.nav.open .nav-cta{
        display:flex;flex-direction:column;align-items:stretch;width:100%;
        padding:12px 0 4px;
      }
      .nav.open{flex-wrap:wrap;align-items:flex-start;padding-bottom:14px}
      .nav.open .nav-links a{padding:10px 12px;background:#fff;border:1px solid var(--line)}
      .hero-grid,.grid-4,.grid-3,.grid-2,.review-grid,.article-grid,.faq-list,.timeline,.price-grid,.footer-grid,.flow,.hero-points,.form-grid,.aside-compact{grid-template-columns:1fr}
      .hero-main{padding:24px}
      .hero-side{padding:16px}
      .section-head h2{font-size:24px}
      .floating{right:12px;bottom:12px}
      .qrcode{align-items:flex-start;flex-direction:column}
      .brand{max-width:72%}
    }