:root{
      --bg:#f6f8fc;
      --panel:#ffffff;
      --panel-2:#f4f7ff;
      --text:#162033;
      --muted:#5b667a;
      --line:#dce4f1;
      --accent:#4f6cf0;
      --accent2:#19c6b8;
      --accent3:#ff8b5e;
      --shadow:0 18px 40px rgba(22,32,51,.08);
      --shadow2:0 10px 24px rgba(79,108,240,.12);
      --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",Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 12% 8%, rgba(79,108,240,.14), transparent 28%),
        radial-gradient(circle at 85% 12%, rgba(25,198,184,.14), transparent 24%),
        linear-gradient(180deg, #f9fbff 0%, #f6f8fc 35%, #f8fafc 100%);
      line-height:1.65;
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--container), calc(100% - 32px)); margin:0 auto}
    .site-header{
      position:sticky;top:0;z-index:60;
      backdrop-filter:saturate(180%) blur(14px);
      background:rgba(246,248,252,.82);
      border-bottom:1px solid rgba(220,228,241,.75);
    }
    .nav{
      display:flex;align-items:center;justify-content:space-between;gap:18px;
      min-height:76px;
    }
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .brand-mark{
      width:42px;height:42px;border-radius:14px;background:linear-gradient(135deg,var(--accent),var(--accent2));
      display:grid;place-items:center;color:#fff;font-weight:800;box-shadow:var(--shadow2);flex:0 0 auto;
    }
    .brand-text{display:flex;flex-direction:column;min-width:0}
    .brand-text strong{font-size:1rem;line-height:1.2}
    .brand-text span{font-size:.86rem;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .nav-links{display:flex;align-items:center;gap:14px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:.95rem;color:var(--text);padding:8px 10px;border-radius:999px;transition:.25s ease}
    .nav-links a:hover{background:#eaf0ff;color:var(--accent)}
    .menu-btn{
      display:none;border:1px solid var(--line);background:var(--panel);color:var(--text);
      border-radius:12px;padding:10px 12px;box-shadow:var(--shadow);
    }
    .hero{
      padding:34px 0 24px;
    }
    .hero-shell{
      display:grid;grid-template-columns:1.2fr .8fr;gap:22px;align-items:stretch;
    }
    .hero-main,.hero-side,.section-card,.soft-card,.form-card,.faq-card,.review-card,.case-card,.service-card,.compare-card,.help-card,.timeline-card,.price-card,.network-card{
      background:rgba(255,255,255,.86);
      border:1px solid rgba(220,228,241,.88);
      border-radius:var(--radius);
      box-shadow:var(--shadow);
    }
    .hero-main{
      padding:32px;
      position:relative;
      overflow:hidden;
      background:
        linear-gradient(135deg, rgba(79,108,240,.12), rgba(25,198,184,.08) 45%, rgba(255,255,255,.94) 100%);
    }
    .hero-main::before,.hero-main::after{
      content:"";position:absolute;border-radius:999px;pointer-events:none;
      background:radial-gradient(circle, rgba(79,108,240,.22), rgba(79,108,240,0) 68%);
    }
    .hero-main::before{width:180px;height:180px;right:-40px;top:-24px}
    .hero-main::after{width:220px;height:220px;left:-70px;bottom:-80px}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      padding:7px 12px;border-radius:999px;background:#eef4ff;color:var(--accent);
      font-weight:700;font-size:.88rem;
    }
    h1{
      margin:14px 0 14px;font-size:clamp(2rem,4vw,3.5rem);line-height:1.08;letter-spacing:-.02em;
    }
    .hero p{margin:0;color:var(--muted);font-size:1.03rem;max-width:62ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      padding:12px 18px;border-radius:14px;border:1px solid transparent;font-weight:700;
      transition:transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
      cursor:pointer;
    }
    .btn:hover{transform:translateY(-2px)}
    .btn-primary{background:linear-gradient(135deg,var(--accent),#6b7ff4);color:#fff;box-shadow:0 14px 28px rgba(79,108,240,.22)}
    .btn-secondary{background:#fff;color:var(--text);border-color:var(--line)}
    .hero-metrics{
      display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:22px
    }
    .metric{
      background:rgba(255,255,255,.86);border:1px solid rgba(220,228,241,.9);border-radius:18px;padding:16px;
    }
    .metric strong{display:block;font-size:1.35rem}
    .metric span{color:var(--muted);font-size:.92rem}
    .hero-side{padding:22px}
    .side-grid{display:grid;gap:12px}
    .mini-card{
      padding:16px;border-radius:18px;background:linear-gradient(135deg,#fff,#f5f8ff);border:1px solid var(--line)
    }
    .mini-card h3{margin:0 0 6px;font-size:1rem}
    .mini-card p{margin:0;color:var(--muted);font-size:.93rem}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag-cloud span{
      padding:8px 12px;border-radius:999px;background:#eef4ff;border:1px solid #dce6ff;color:#33405f;font-size:.88rem
    }
    section{padding:18px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:14px}
    .section-head h2{margin:0;font-size:1.65rem}
    .section-head p{margin:0;color:var(--muted);max-width:70ch}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    .section-card,.soft-card,.form-card,.faq-card,.review-card,.case-card,.service-card,.compare-card,.help-card,.timeline-card,.price-card,.network-card{padding:20px}
    .service-card h3,.case-card h3,.review-card h3,.help-card h3,.price-card h3,.network-card h3{margin:0 0 8px;font-size:1.08rem}
    .muted{color:var(--muted)}
    .feature-list,.bullet-list{margin:0;padding:0;list-style:none;display:grid;gap:10px}
    .feature-list li,.bullet-list li{
      display:flex;gap:10px;align-items:flex-start;color:var(--text)
    }
    .dot{
      width:10px;height:10px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent2));margin-top:.5rem;flex:0 0 auto
    }
    .workflow{
      display:grid;grid-template-columns:repeat(4,1fr);gap:14px
    }
    .step{
      padding:18px;border-radius:18px;background:linear-gradient(180deg,#fff, #f7f9ff);
      border:1px solid var(--line);position:relative;overflow:hidden
    }
    .step .num{
      display:inline-flex;width:34px;height:34px;border-radius:12px;align-items:center;justify-content:center;
      background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;font-weight:800;margin-bottom:10px
    }
    .step h3{margin:0 0 8px;font-size:1.02rem}
    .table-wrap{overflow-x:auto;border-radius:18px;border:1px solid var(--line);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:840px}
    th,td{padding:14px 16px;border-bottom:1px solid #edf1f7;text-align:left;vertical-align:top}
    th{background:#f6f9ff;color:#23304a;font-size:.95rem}
    tr:last-child td{border-bottom:none}
    .rating{
      display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:#effaf7;color:#13856f;font-weight:700
    }
    .price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .price-item{
      border:1px solid var(--line);border-radius:18px;padding:18px;background:linear-gradient(180deg,#fff,#f7faff)
    }
    .price-item strong{display:block;font-size:1.25rem;margin:8px 0}
    .timeline{
      display:grid;grid-template-columns:repeat(4,1fr);gap:14px
    }
    .timeline-item{
      padding:18px;border-left:4px solid var(--accent);border-radius:18px;background:#fff;border:1px solid var(--line)
    }
    .faq details{
      border:1px solid var(--line);border-radius:16px;background:#fff;overflow:hidden
    }
    .faq summary{
      list-style:none;cursor:pointer;padding:16px 18px;font-weight:700;display:flex;justify-content:space-between;gap:16px
    }
    .faq summary::-webkit-details-marker{display:none}
    .faq .answer{padding:0 18px 16px;color:var(--muted)}
    .reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .stars{color:#f6a700;font-size:1rem;letter-spacing:2px}
    .case-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .case-card ul{padding-left:18px;margin:10px 0 0;color:var(--muted)}
    .article-list{display:grid;gap:12px}
    .article-item{
      display:flex;justify-content:space-between;gap:12px;align-items:center;
      padding:15px 16px;border:1px solid var(--line);border-radius:16px;background:#fff
    }
    .article-item span{color:var(--muted);font-size:.92rem}
    .form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    .field{display:grid;gap:8px}
    label{font-weight:700;font-size:.95rem}
    input,select,textarea{
      width:100%;border:1px solid #cfd8ea;border-radius:14px;padding:12px 14px;
      background:#fff;color:var(--text);outline:none;font:inherit;
    }
    textarea{min-height:120px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:var(--accent);box-shadow:0 0 0 4px rgba(79,108,240,.12)}
    .form-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-top:12px}
    .footer{
      padding:22px 0 28px;
      color:#24324d;
    }
    .footer-inner{
      border-top:1px solid var(--line);padding-top:18px;
      display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;align-items:flex-start
    }
    .footer a{color:var(--accent)}
    .floating{
      position:fixed;right:16px;bottom:16px;z-index:70;display:grid;gap:10px
    }
    .float-btn{
      width:52px;height:52px;border-radius:16px;border:1px solid rgba(220,228,241,.9);
      background:#fff;box-shadow:var(--shadow);display:grid;place-items:center;color:var(--accent);font-weight:800
    }
    .chat-panel{
      position:fixed;right:16px;bottom:80px;z-index:75;width:min(320px, calc(100vw - 32px));
      background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);padding:16px;
      display:none;
    }
    .chat-panel.open{display:block}
    .chat-panel h3{margin:0 0 8px}
    .chat-panel p{margin:0 0 10px;color:var(--muted);font-size:.94rem}
    .chat-panel .qrcode{border-radius:14px;overflow:hidden;border:1px solid var(--line);margin:10px 0}
    .section-reveal{opacity:0;transform:translateY(18px);transition:.7s ease}
    .section-reveal.in{opacity:1;transform:none}
    .mobile-only{display:none}
    .flex-between{display:flex;justify-content:space-between;gap:12px;align-items:center}
    .badge{display:inline-flex;padding:6px 10px;border-radius:999px;background:#fff6ec;color:#c36a21;border:1px solid #ffe0c5;font-size:.86rem;font-weight:700}
    .faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    .table-note{font-size:.9rem;color:var(--muted);margin-top:10px}
    .home-link{font-weight:700;color:var(--accent)}
    @media (max-width: 980px){
      .hero-shell,.grid-3,.grid-2,.workflow,.timeline,.reviews,.case-grid,.price-grid,.faq-grid{grid-template-columns:1fr}
      .hero-main{padding:24px}
      .nav-links{display:none}
      .menu-btn{display:inline-flex}
      .nav-links.open{
        display:flex;position:absolute;left:16px;right:16px;top:76px;flex-direction:column;align-items:flex-start;
        padding:14px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)
      }
      .mobile-only{display:inline-flex}
      .hero-metrics{grid-template-columns:1fr}
      .form-grid{grid-template-columns:1fr}
      .section-head{align-items:flex-start;flex-direction:column}
    }
    @media (max-width: 640px){
      .container{width:min(var(--container), calc(100% - 24px))}
      .hero{padding-top:22px}
      h1{font-size:1.9rem}
      .hero-main,.hero-side,.section-card,.soft-card,.form-card,.faq-card,.review-card,.case-card,.service-card,.compare-card,.help-card,.timeline-card,.price-card,.network-card{padding:16px}
      .btn{width:100%}
      .hero-actions{display:grid}
    }