:root{
      --bg:#f5f7ff;
      --bg2:#eef4ff;
      --card:#ffffff;
      --text:#162033;
      --muted:#5d6b85;
      --line:#dce4f3;
      --brand:#5a67ff;
      --brand2:#17c3b2;
      --accent:#ff7a59;
      --shadow:0 18px 50px rgba(31,54,109,.10);
      --shadow2:0 10px 24px rgba(26,40,84,.08);
      --radius:20px;
      --container: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;
      background:
        radial-gradient(circle at top left, rgba(90,103,255,.16), transparent 22%),
        radial-gradient(circle at 80% 12%, rgba(23,195,178,.14), transparent 18%),
        linear-gradient(180deg, #f7f9ff 0%, #eef4ff 50%, #f8fbff 100%);
      color:var(--text);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(100% - 32px, var(--container));margin:0 auto}
    .site-header{
      position:sticky;top:0;z-index:50;
      backdrop-filter:saturate(1.2) blur(14px);
      background:rgba(245,248,255,.82);
      border-bottom:1px solid rgba(220,228,243,.7);
    }
    .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:42px;height:42px;object-fit:contain;border-radius:10px;background:#fff;box-shadow:var(--shadow2)}
    .brand strong{display:block;font-size:18px;line-height:1.1}
    .brand span{display:block;font-size:12px;color:var(--muted);margin-top:3px}
    .nav-toggle{
      display:none;border:1px solid var(--line);background:#fff;color:var(--text);
      padding:10px 12px;border-radius:12px;box-shadow:var(--shadow2)
    }
    .nav-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:14px;color:var(--muted);padding:8px 0;position:relative}
    .nav-links a:hover{color:var(--brand)}
    .nav-links a::after{
      content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:linear-gradient(90deg,var(--brand),var(--brand2));
      transition:.25s ease;
    }
    .nav-links a:hover::after{width:100%}
    .hero{
      padding:42px 0 22px;
    }
    .hero-wrap{
      display:grid;grid-template-columns:1.2fr .8fr;gap:24px;align-items:stretch;
    }
    .hero-copy,.hero-panel,.section-card,.metric,.feature,.step,.compare-card,.review,.article,.faq-item,.form-card,.price-box,.timeline,.tag-cloud,.network,.quote{
      background:rgba(255,255,255,.88);
      border:1px solid rgba(220,228,243,.9);
      box-shadow:var(--shadow2);
    }
    .hero-copy{
      border-radius:28px;padding:34px;
      position:relative;overflow:hidden;
    }
    .hero-copy::before,.hero-copy::after{
      content:"";position:absolute;border-radius:999px;filter:blur(2px);pointer-events:none;
    }
    .hero-copy::before{
      width:240px;height:240px;right:-70px;top:-70px;
      background:radial-gradient(circle, rgba(90,103,255,.23), transparent 68%);
    }
    .hero-copy::after{
      width:180px;height:180px;left:-40px;bottom:-60px;
      background:radial-gradient(circle, rgba(23,195,178,.18), transparent 66%);
    }
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      padding:8px 12px;border-radius:999px;
      background:linear-gradient(90deg, rgba(90,103,255,.12), rgba(23,195,178,.12));
      color:#27406e;font-size:13px;font-weight:600;
    }
    h1{font-size:clamp(32px,5vw,54px);line-height:1.08;margin:16px 0 14px}
    .lead{font-size:17px;line-height:1.8;color:var(--muted);max-width:62ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:24px 0}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      border:0;border-radius:14px;padding:13px 18px;font-weight:700;
      transition:.25s ease;cursor:pointer;
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),#7b5cff);color:#fff;box-shadow:0 14px 28px rgba(90,103,255,.22)}
    .btn-secondary{background:#fff;color:var(--text);border:1px solid var(--line)}
    .btn:hover{transform:translateY(-2px)}
    .hero-points{
      display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:22px
    }
    .mini{
      padding:14px;border-radius:18px;background:linear-gradient(180deg, rgba(246,248,255,.96), rgba(255,255,255,.96));
      border:1px solid rgba(220,228,243,.9)
    }
    .mini b{display:block;font-size:18px}
    .mini span{font-size:12px;color:var(--muted)}
    .hero-panel{border-radius:28px;padding:22px;display:flex;flex-direction:column;gap:14px}
    .panel-top{display:flex;justify-content:space-between;gap:12px;align-items:flex-start}
    .panel-badge{
      display:inline-flex;padding:8px 12px;border-radius:999px;font-size:12px;font-weight:700;
      color:#185d59;background:rgba(23,195,178,.12)
    }
    .metric-grid,.feature-grid,.review-grid,.case-grid,.article-grid,.faq-grid,.price-grid,.network-grid,.time-grid,.compare-grid{display:grid;gap:16px}
    .metric-grid{grid-template-columns:repeat(4,minmax(0,1fr));margin:18px 0 4px}
    .metric{border-radius:22px;padding:18px}
    .metric .num{font-size:28px;font-weight:800;color:#1b2b55}
    .metric .label{font-size:13px;color:var(--muted);margin-top:4px}
    .section{padding:22px 0}
    .section-head{display:flex;justify-content:space-between;gap:14px;align-items:flex-end;margin-bottom:14px}
    .section-head h2{margin:0;font-size:28px}
    .section-head p{margin:0;color:var(--muted);max-width:64ch;line-height:1.7}
    .section-card{border-radius:26px;padding:24px}
    .feature-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
    .feature{border-radius:20px;padding:20px}
    .feature h3{margin:10px 0 8px;font-size:18px}
    .feature p,.feature li,.review p,.article p,.faq-item p,.price-box p,.timeline p,.compare-card td,.compare-card th{color:var(--muted);line-height:1.75}
    .chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
    .chip{padding:8px 12px;border-radius:999px;background:#f3f6ff;border:1px solid #dce4f3;font-size:13px;color:#31456f}
    .two-col{display:grid;grid-template-columns:1.05fr .95fr;gap:18px}
    .steps{display:grid;gap:14px}
    .step{border-radius:18px;padding:18px;display:flex;gap:14px;align-items:flex-start}
    .step .index{width:34px;height:34px;border-radius:12px;display:grid;place-items:center;
      background:linear-gradient(135deg,rgba(90,103,255,.14),rgba(23,195,178,.14));font-weight:800;color:#26406f;flex:none}
    table{width:100%;border-collapse:collapse}
    .compare-card{border-radius:22px;overflow:auto}
    th,td{padding:14px 12px;border-bottom:1px solid #e7edf7;text-align:left;vertical-align:top;min-width:140px}
    th{background:#f8fbff;color:#20345a;font-size:14px}
    .rating{
      display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:14px
    }
    .stars{color:#ffb000;font-size:18px;letter-spacing:2px}
    .tag-cloud,.price-box,.timeline,.network{border-radius:22px;padding:18px}
    .tag-list{display:flex;flex-wrap:wrap;gap:10px}
    .tag-list span{padding:9px 12px;border-radius:999px;background:linear-gradient(180deg,#f7f9ff,#edf3ff);border:1px solid #dce4f3;font-size:13px}
    .price-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
    .price-box h3,.timeline h3,.network h3,.form-card h3{margin:0 0 8px}
    .timeline{display:grid;gap:12px}
    .timeline-item{display:flex;gap:12px;padding:10px 0;border-bottom:1px dashed #e3e9f3}
    .timeline-item:last-child{border-bottom:0}
    .dot{width:12px;height:12px;border-radius:50%;margin-top:6px;background:linear-gradient(135deg,var(--brand),var(--brand2));flex:none}
    .network-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
    .review-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
    .review,.article{border-radius:20px;padding:18px}
    .review .meta{display:flex;justify-content:space-between;gap:10px;align-items:center;margin-bottom:10px}
    .article-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
    .article .meta,.faq-item .q{display:flex;justify-content:space-between;gap:12px;align-items:center}
    .faq-grid{grid-template-columns:1fr}
    .faq-item{border-radius:18px;padding:0;overflow:hidden}
    .faq-q{
      width:100%;background:transparent;border:0;color:var(--text);text-align:left;padding:18px 20px;
      display:flex;justify-content:space-between;align-items:center;font-size:16px;font-weight:700;cursor:pointer
    }
    .faq-a{display:none;padding:0 20px 18px}
    .faq-item.open .faq-a{display:block}
    .faq-item.open .chev{transform:rotate(180deg)}
    .chev{transition:.25s ease}
    .form-card form{display:grid;gap:14px}
    .form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .field{display:grid;gap:8px}
    label{font-size:13px;color:#30466f;font-weight:700}
    input,select,textarea{
      width:100%;border:1px solid #dce4f3;border-radius:14px;background:#fff;color:var(--text);
      padding:13px 14px;font:inherit;outline:none
    }
    textarea{min-height:116px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:#9fb0ff;box-shadow:0 0 0 4px rgba(90,103,255,.10)}
    .submit-row{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
    .footer{
      margin-top:22px;padding:24px 0 30px;background:linear-gradient(180deg, rgba(236,242,255,.4), rgba(230,237,252,.8));
      border-top:1px solid rgba(220,228,243,.9)
    }
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:18px}
    .footer a{color:#223761}
    .footer p,.footer li{color:#5b6782;line-height:1.75}
    .footer small{color:#5b6782}
    .social{display:flex;flex-wrap:wrap;gap:10px}
    .social a{padding:9px 12px;border-radius:999px;background:#fff;border:1px solid #dce4f3}
    .floating{
      position:fixed;right:18px;bottom:18px;z-index:60;display:grid;gap:10px
    }
    .float-btn{
      width:52px;height:52px;border-radius:16px;border:0;background:linear-gradient(135deg,var(--brand),#7b5cff);
      color:#fff;display:grid;place-items:center;box-shadow:0 14px 30px rgba(90,103,255,.25);cursor:pointer
    }
    .float-panel{
      width:min(320px, calc(100vw - 36px));
      background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);
      padding:16px;display:none
    }
    .float-panel.open{display:block}
    .float-panel .qr{display:grid;grid-template-columns:86px 1fr;gap:14px;align-items:center}
    .float-panel img{width:86px;height:86px;object-fit:cover;border-radius:12px;border:1px solid #e5ebf5}
    .fade-up{opacity:0;transform:translateY(18px);transition:.65s ease}
    .fade-up.show{opacity:1;transform:translateY(0)}
    .scroll-top{display:none}
    @media (max-width: 1024px){
      .hero-wrap,.two-col,.footer-grid{grid-template-columns:1fr}
      .metric-grid,.feature-grid,.review-grid,.article-grid,.price-grid,.network-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
    }
    @media (max-width: 760px){
      .nav-toggle{display:inline-flex}
      .nav-links{
        display:none;position:absolute;left:16px;right:16px;top:70px;padding:14px;border-radius:18px;
        background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);flex-direction:column;align-items:flex-start
      }
      .nav-links.open{display:flex}
      .hero{padding-top:22px}
      .hero-copy,.hero-panel,.section-card{padding:18px;border-radius:22px}
      .hero-points,.metric-grid,.feature-grid,.review-grid,.article-grid,.price-grid,.network-grid,.form-grid{grid-template-columns:1fr}
      .section-head{flex-direction:column;align-items:flex-start}
      h1{font-size:30px}
      .lead{font-size:16px}
      .container{width:min(100% - 24px, var(--container))}
    }