:root{
      --bg:#f6f8fc;
      --panel:#ffffff;
      --panel-2:#f1f6ff;
      --line:#d9e3f0;
      --text:#10203a;
      --muted:#5f6e85;
      --brand:#2e6bff;
      --brand-2:#7b5cff;
      --accent:#00d4ff;
      --warm:#ffcf5b;
      --shadow:0 18px 50px rgba(16,32,58,.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;
      color:var(--text);
      background:
        radial-gradient(circle at 10% 10%, rgba(123,92,255,.10), transparent 26%),
        radial-gradient(circle at 90% 16%, rgba(46,107,255,.12), transparent 24%),
        radial-gradient(circle at 50% 0%, rgba(0,212,255,.08), transparent 20%),
        linear-gradient(180deg,#f7f9fd 0%, #eef4ff 100%);
      overflow-x:hidden;
    }
    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,.site-footer{position:relative;z-index:5}
    .topbar{
      backdrop-filter:blur(14px);
      background:rgba(255,255,255,.76);
      border-bottom:1px solid rgba(217,227,240,.85);
    }
    .nav{
      display:flex;align-items:center;justify-content:space-between;gap:18px;
      padding:14px 0;
    }
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .brand img{width:42px;height:42px;object-fit:contain;flex:0 0 auto}
    .brand-text{display:flex;flex-direction:column;line-height:1.1;min-width:0}
    .brand-text strong{font-size:16px;letter-spacing:.4px}
    .brand-text span{font-size:12px;color:var(--muted)}
    .nav-links{display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:flex-end}
    .nav-links a{
      font-size:13px;padding:10px 12px;border-radius:999px;color:var(--text);
      background:rgba(255,255,255,.7);border:1px solid rgba(217,227,240,.9);
      transition:.25s ease;
    }
    .nav-links a:hover,.nav-links a:focus-visible{transform:translateY(-1px);box-shadow:var(--shadow);border-color:rgba(46,107,255,.22)}
    .menu-btn{
      display:none;border:1px solid rgba(217,227,240,.95);background:#fff;color:var(--text);
      border-radius:14px;padding:10px 12px;cursor:pointer
    }
    .hero{
      padding:34px 0 18px;
    }
    .hero-grid{
      display:grid;grid-template-columns:1.18fr .82fr;gap:22px;align-items:stretch;
    }
    .hero-main,.hero-side,.section-card,.form-card,.review-card,.faq-item,.mini-card,.price-card,.case-card,.metric-card,.compare-card,.timeline-card,.support-card{
      background:rgba(255,255,255,.84);
      border:1px solid rgba(217,227,240,.92);
      border-radius:var(--radius);
      box-shadow:var(--shadow);
    }
    .hero-main{
      padding:28px;
      position:relative;
      overflow:hidden;
      background:
        linear-gradient(135deg, rgba(46,107,255,.10), rgba(123,92,255,.08) 45%, rgba(255,255,255,.88) 100%);
    }
    .hero-main::before{
      content:"";
      position:absolute;inset:auto -60px -90px auto;width:240px;height:240px;border-radius:50%;
      background:radial-gradient(circle, rgba(0,212,255,.25), transparent 62%);
      pointer-events:none;
    }
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      padding:8px 12px;border-radius:999px;background:rgba(255,255,255,.75);
      border:1px solid rgba(46,107,255,.16);color:#21458f;font-size:13px;font-weight:600;
    }
    h1{margin:16px 0 14px;font-size:clamp(30px,4vw,48px);line-height:1.06;letter-spacing:-.6px}
    .hero p,.section-lead,.card p,.faq-item p,.review-card p,.case-card p,.mini-card p,.compare-card p,.form-tip,.muted{color:var(--muted);line-height:1.75}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:22px 0 18px}
    .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:.25s ease;cursor:pointer;line-height:1;
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:0 12px 26px rgba(46,107,255,.24)}
    .btn-primary:hover,.btn-primary:focus-visible{transform:translateY(-2px)}
    .btn-ghost{background:#fff;border-color:rgba(46,107,255,.18);color:var(--text)}
    .btn-ghost:hover,.btn-ghost:focus-visible{transform:translateY(-2px);box-shadow:var(--shadow)}
    .hero-points{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:20px}
    .hero-point{
      padding:14px;border-radius:18px;background:rgba(255,255,255,.72);border:1px solid rgba(217,227,240,.9)
    }
    .hero-point strong{display:block;font-size:14px;margin-bottom:6px}
    .hero-point span{font-size:13px;color:var(--muted);line-height:1.6}
    .hero-side{padding:22px;display:flex;flex-direction:column;gap:14px}
    .hero-panel{
      border-radius:20px;padding:18px;background:linear-gradient(180deg,#0f1f3f,#18346d);
      color:#fff;overflow:hidden;position:relative
    }
    .hero-panel::after{
      content:"";position:absolute;inset:-40px -30px auto auto;width:180px;height:180px;border-radius:50%;
      background:radial-gradient(circle, rgba(0,212,255,.28), transparent 66%);
    }
    .hero-panel h2{margin:0 0 8px;font-size:20px}
    .hero-panel p{margin:0;color:rgba(255,255,255,.82);line-height:1.7}
    .hero-stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
    .metric-card{padding:18px}
    .metric-card b{display:block;font-size:24px;letter-spacing:-.5px}
    .metric-card span{display:block;margin-top:6px;font-size:13px;color:var(--muted)}
    .section{padding:16px 0 6px}
    .section-card{padding:24px}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:18px;flex-wrap:wrap}
    .section-head h2{margin:0;font-size:clamp(24px,2.8vw,34px)}
    .section-lead{max-width:780px;margin:8px 0 0}
    .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .card,.mini-card,.support-card,.compare-card,.price-card,.case-card{padding:18px}
    .icon{
      width:42px;height:42px;border-radius:14px;display:inline-flex;align-items:center;justify-content:center;
      background:linear-gradient(135deg,rgba(46,107,255,.12),rgba(0,212,255,.12));color:var(--brand);font-weight:800;margin-bottom:12px
    }
    .card h3,.mini-card h3,.case-card h3,.price-card h3,.compare-card h3{margin:0 0 10px;font-size:18px}
    .card ul,.feature-list,.simple-list{margin:12px 0 0;padding:0;list-style:none;display:grid;gap:9px}
    .card li,.feature-list li,.simple-list li{position:relative;padding-left:18px;color:var(--muted);line-height:1.65}
    .card li::before,.feature-list li::before,.simple-list li::before{
      content:"";position:absolute;left:0;top:.72em;width:8px;height:8px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--accent))
    }
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag-cloud span{
      padding:9px 12px;border-radius:999px;background:#fff;border:1px solid rgba(217,227,240,.95);
      color:#335; font-size:13px
    }
    .step-list{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .step{
      padding:18px;border-radius:20px;background:linear-gradient(180deg,#fff, #f6f9ff);border:1px solid var(--line)
    }
    .step b{display:inline-flex;width:32px;height:32px;border-radius:50%;align-items:center;justify-content:center;
      background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;margin-bottom:10px}
    .table-wrap{overflow:auto;border-radius:18px;border:1px solid var(--line);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:14px 16px;text-align:left;border-bottom:1px solid #e8eef7;vertical-align:top}
    th{background:#f5f8ff;color:#17305d;font-size:14px}
    td{color:var(--muted);font-size:14px;line-height:1.7}
    .badge{display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border-radius:999px;background:rgba(46,107,255,.08);color:#2348a0;font-size:12px;font-weight:700}
    .split{
      display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:start
    }
    .timeline{
      display:grid;gap:14px
    }
    .timeline-item{
      display:grid;grid-template-columns:auto 1fr;gap:14px;align-items:start;padding:16px;border-radius:18px;background:#fff;border:1px solid var(--line)
    }
    .timeline-item .dot{width:12px;height:12px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--accent));margin-top:6px;box-shadow:0 0 0 6px rgba(46,107,255,.08)}
    .timeline-item h3{margin:0 0 6px;font-size:16px}
    .faq-list{display:grid;gap:12px}
    .faq-item{padding:0;overflow:hidden}
    .faq-q{
      width:100%;background:none;border:0;padding:18px;text-align:left;display:flex;align-items:center;justify-content:space-between;gap:16px;
      color:var(--text);font-weight:700;font-size:16px;cursor:pointer
    }
    .faq-q span{display:inline-block;transition:.22s ease}
    .faq-item[open] .faq-q span{transform:rotate(45deg)}
    .faq-a{padding:0 18px 18px}
    .reviews,.cases,.articles,.prices{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .stars{color:#ffb300;letter-spacing:2px;font-size:14px;margin-bottom:10px}
    .compare-card strong{display:block;font-size:18px;margin-bottom:10px}
    .form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .field{display:flex;flex-direction:column;gap:8px}
    .field.full{grid-column:1/-1}
    label{font-size:14px;font-weight:700;color:#213658}
    input,select,textarea{
      width:100%;border:1px solid var(--line);background:#fff;border-radius:14px;padding:13px 14px;
      color:var(--text);font:inherit;outline:none;transition:.2s ease
    }
    input:focus,select:focus,textarea:focus{border-color:rgba(46,107,255,.5);box-shadow:0 0 0 4px rgba(46,107,255,.10)}
    textarea{min-height:120px;resize:vertical}
    .form-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-top:12px}
    .help-rail{display:grid;grid-template-columns:1.1fr .9fr;gap:16px;align-items:start}
    .footer-top{padding:26px 0 16px}
    .footer-grid{display:grid;grid-template-columns:1.15fr 1fr 1fr;gap:18px}
    .footer-box{padding:20px;border-radius:20px;background:#fff;border:1px solid var(--line)}
    .footer-box a{color:#21458f}
    .footer-bottom{
      padding:16px 0 28px;color:#5d6a80;font-size:13px
    }
    .floating{
      position:fixed;right:16px;bottom:16px;display:flex;flex-direction:column;gap:10px;z-index:20
    }
    .float-btn{
      width:48px;height:48px;border-radius:50%;border:1px solid rgba(217,227,240,.95);background:#fff;color:var(--text);
      display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow);cursor:pointer
    }
    .float-contact{
      position:fixed;left:16px;bottom:16px;z-index:20;
      width:min(320px,calc(100% - 32px));
      background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);padding:14px;display:grid;gap:10px
    }
    .float-contact .row{display:flex;align-items:center;gap:12px}
    .float-contact img{width:72px;height:72px;object-fit:cover;border-radius:16px;border:1px solid var(--line)}
    .float-contact strong{display:block;margin-bottom:4px}
    .float-contact small{color:var(--muted);line-height:1.6}
    .scroll-reveal{opacity:0;transform:translateY(18px);transition:.6s ease}
    .scroll-reveal.visible{opacity:1;transform:none}
    .article-meta{font-size:12px;color:#6a7690;margin-top:10px}
    .price-card .price{
      font-size:30px;font-weight:800;letter-spacing:-.5px;margin:4px 0 8px;
      background:linear-gradient(135deg,var(--brand),var(--brand-2));-webkit-background-clip:text;background-clip:text;color:transparent
    }
    .support-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
    .mini-card p{margin:0}
    .highlight{
      display:inline-flex;padding:7px 11px;border-radius:999px;background:rgba(0,212,255,.10);color:#0f5c72;font-size:12px;font-weight:700
    }
    @media (max-width: 980px){
      .hero-grid,.split,.help-rail,.footer-grid,.grid-3,.grid-4,.reviews,.cases,.articles,.prices,.support-grid,.step-list{grid-template-columns:1fr 1fr}
      .nav-links{display:none}
      .menu-btn{display:inline-flex}
      .nav.open .nav-links{
        display:flex;position:absolute;left:16px;right:16px;top:72px;padding:14px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);z-index:8
      }
      .nav.open{position:relative}
    }
    @media (max-width: 720px){
      .hero,.section{padding-left:0;padding-right:0}
      .hero-grid,.split,.help-rail,.footer-grid,.grid-3,.grid-4,.reviews,.cases,.articles,.prices,.support-grid,.step-list,.hero-points,.hero-stats,.form-grid{grid-template-columns:1fr}
      .hero-main,.hero-side,.section-card,.form-card,.footer-box,.hero-panel,.metric-card,.mini-card,.case-card,.price-card,.compare-card,.review-card,.support-card{padding:18px}
      .container{width:min(var(--container),calc(100% - 24px))}
      h1{font-size:32px}
      .menu-btn{display:inline-flex}
      .float-contact{left:12px;right:12px;bottom:12px;width:auto}
    }