:root{
      --bg:#f7f8fc;
      --panel:#ffffff;
      --panel-2:#f1f4ff;
      --text:#152033;
      --muted:#5b667d;
      --line:#dbe2f1;
      --brand:#2f6bff;
      --brand-2:#7a4dff;
      --accent:#ff7a59;
      --good:#19b57a;
      --shadow:0 18px 50px rgba(35,54,103,.10);
      --shadow-2:0 12px 30px rgba(47,107,255,.16);
      --radius:20px;
      --radius-sm:14px;
      --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(47,107,255,.12), transparent 28%),
      radial-gradient(circle at top right, rgba(122,77,255,.10), transparent 24%),
      linear-gradient(180deg,#f9fbff 0%, #f6f8fc 42%, #f7f8fc 100%);
      color:var(--text);line-height:1.7}
    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:60;background:rgba(247,248,252,.82);backdrop-filter:blur(14px);border-bottom:1px solid rgba(219,226,241,.75)}
    .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:44px;height:44px;object-fit:contain;border-radius:12px;background:#fff;padding:6px;box-shadow:0 8px 24px rgba(47,107,255,.12)}
    .brand .t{display:flex;flex-direction:column;min-width:0}
    .brand .t strong{font-size:18px;line-height:1.2}
    .brand .t span{font-size:12px;color:var(--muted)}
    .nav-links{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:10px;align-items:center}
    .nav-links a{font-size:14px;color:var(--muted);padding:8px 11px;border-radius:999px;transition:.2s ease}
    .nav-links a:hover{color:var(--text);background:#eef3ff}
    .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;transition:.22s ease;cursor:pointer;white-space:nowrap}
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:var(--shadow-2)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 36px rgba(47,107,255,.24)}
    .btn-ghost{background:#fff;border-color:var(--line);color:var(--text)}
    .btn-ghost:hover{border-color:#bfd0ff;color:var(--brand);transform:translateY(-2px)}
    .menu-btn{display:none;background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px 12px;color:var(--text)}
    .hero{padding:34px 0 20px}
    .hero-grid{display:grid;grid-template-columns:1.3fr .9fr;gap:22px;align-items:stretch}
    .hero-main,.hero-side,.panel,.section-card,.faq-item,.review,.article,.timeline li,.price-card,.service-card,.case-card,.compare-card,.form-card{background:rgba(255,255,255,.88);border:1px solid rgba(219,226,241,.92);border-radius:var(--radius);box-shadow:var(--shadow)}
    .hero-main{padding:34px;position:relative;overflow:hidden}
    .hero-main:before,.hero-side:before{content:"";position:absolute;inset:auto -20% -30% auto;width:260px;height:260px;background:radial-gradient(circle, rgba(47,107,255,.17), transparent 70%);pointer-events:none}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;background:#eef3ff;color:var(--brand);padding:8px 12px;border-radius:999px;font-size:13px;font-weight:700}
    h1{margin:16px 0 12px;font-size:clamp(30px,5vw,52px);line-height:1.08;letter-spacing:-.03em}
    .lead{margin:0;color:var(--muted);font-size:16px;max-width:62ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:24px 0 18px}
    .hero-metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:24px}
    .metric{padding:16px;border-radius:16px;background:linear-gradient(180deg,#f7faff,#edf3ff);border:1px solid #dfe7fb}
    .metric strong{display:block;font-size:24px;line-height:1.1}
    .metric span{font-size:13px;color:var(--muted)}
    .hero-side{padding:22px;display:flex;flex-direction:column;gap:16px;position:relative;overflow:hidden}
    .side-banner{padding:18px;border-radius:18px;background:linear-gradient(135deg,rgba(47,107,255,.10),rgba(122,77,255,.08));border:1px solid #d6e1ff}
    .side-banner .row{display:flex;align-items:center;justify-content:space-between;gap:12px}
    .side-banner strong{font-size:18px}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:8px 11px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;color:#33415d}
    .quick-list{display:grid;gap:10px}
    .quick-item{display:flex;align-items:flex-start;gap:10px;padding:12px 14px;border-radius:14px;background:#fff;border:1px solid var(--line)}
    .dot{width:10px;height:10px;border-radius:50%;margin-top:7px;background:linear-gradient(135deg,var(--brand),var(--brand-2))}
    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:28px;line-height:1.15}
    .section-head p{margin:0;color:var(--muted);max-width:68ch}
    .grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
    .grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .section-card,.service-card,.case-card,.compare-card,.review,.article,.faq-item,.form-card,.panel,.price-card,.timeline li{padding:20px}
    .service-card h3,.case-card h3,.price-card h3,.article h3,.review h3{margin:0 0 8px;font-size:18px}
    .service-card p,.case-card p,.price-card p,.article p,.review p{margin:0;color:var(--muted)}
    .statbar{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
    .statbar span{padding:7px 10px;border-radius:999px;background:#f3f6ff;border:1px solid #dfe7fb;font-size:13px;color:#41506d}
    .steps{counter-reset:step;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .step{padding:20px;border-radius:18px;background:linear-gradient(180deg,#fff, #f8faff);border:1px solid var(--line);position:relative}
    .step:before{counter-increment:step;content:counter(step);position:absolute;top:16px;right:16px;width:34px;height:34px;display:grid;place-items:center;border-radius:50%;background:#eef3ff;color:var(--brand);font-weight:800}
    .step h3{margin:0 0 8px}
    .step p{margin:0;color:var(--muted)}
    .table-wrap{overflow:auto;border-radius:18px;border:1px solid var(--line);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:860px}
    th,td{padding:16px 14px;text-align:left;border-bottom:1px solid #edf1f8;vertical-align:top}
    th{background:#f5f8ff;color:#24314c;font-size:14px}
    td{color:#39455e}
    .compare-hero{display:flex;gap:16px;align-items:center;justify-content:space-between;margin-bottom:14px;flex-wrap:wrap}
    .score{display:flex;align-items:center;gap:12px;padding:14px 16px;border-radius:18px;background:linear-gradient(135deg,#eff5ff,#f8f1ff);border:1px solid #dce6ff}
    .score strong{font-size:26px;color:#1b2a4a}
    .stars{color:#ffb400;font-size:18px;letter-spacing:2px}
    .faq{display:grid;gap:12px}
    .faq-item button{width:100%;text-align:left;background:none;border:none;padding:0;font:inherit;color:inherit;display:flex;justify-content:space-between;gap:16px;cursor:pointer}
    .faq-item h3{margin:0;font-size:17px}
    .faq-item .answer{max-height:0;overflow:hidden;transition:max-height .28s ease}
    .faq-item .answer p{margin:12px 0 0;color:var(--muted)}
    .faq-item.active .answer{max-height:220px}
    .faq-item .icon{flex:0 0 auto;width:28px;height:28px;border-radius:50%;display:grid;place-items:center;background:#eef3ff;color:var(--brand);font-weight:800}
    .reviews .review{display:flex;flex-direction:column;gap:10px}
    .review .meta{display:flex;align-items:center;justify-content:space-between;gap:10px;color:var(--muted);font-size:13px}
    .article-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
    .article .link{margin-top:12px;color:var(--brand);font-weight:700}
    .timeline{list-style:none;margin:0;padding:0;display:grid;gap:12px}
    .timeline li{display:flex;gap:14px;align-items:flex-start}
    .timeline .badge{flex:0 0 auto;width:38px;height:38px;border-radius:14px;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;display:grid;place-items:center;font-weight:800}
    .form-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:14px}
    form{display:grid;gap:12px}
    label{display:grid;gap:8px;font-size:14px;color:#2b3650;font-weight:600}
    input,select,textarea{width:100%;border:1px solid var(--line);border-radius:14px;padding:13px 14px;background:#fff;color:var(--text);font:inherit;outline:none;transition:.2s ease}
    input:focus,select:focus,textarea:focus{border-color:#93adff;box-shadow:0 0 0 4px rgba(47,107,255,.12)}
    textarea{min-height:120px;resize:vertical}
    .footer{padding:24px 0 30px;margin-top:10px;background:#f3f6fd;border-top:1px solid #dbe2f1;color:#24314c}
    .footer a{color:#1f57d6}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:14px;align-items:start}
    .mini{color:var(--muted);font-size:14px}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px}
    .footer-links a{padding:8px 10px;border-radius:999px;background:#fff;border:1px solid var(--line)}
    .floating{position:fixed;right:16px;bottom:16px;z-index:80;display:grid;gap:10px}
    .float-btn{width:52px;height:52px;border-radius:18px;display:grid;place-items:center;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:0 16px 28px rgba(47,107,255,.25)}
    .客服{position:fixed;left:16px;bottom:16px;z-index:80;background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);overflow:hidden;width:min(290px, calc(100vw - 32px))}
    .客服 .hd{padding:12px 14px;background:linear-gradient(135deg,#eef3ff,#f7f1ff);font-weight:800}
    .客服 .bd{padding:12px 14px;display:grid;gap:10px}
    .客服 .qr{display:flex;align-items:center;gap:12px}
    .客服 .qr img{width:82px;height:82px;object-fit:cover;border-radius:14px;border:1px solid var(--line)}
    .reveal{opacity:0;transform:translateY(16px);transition:.6s ease}
    .reveal.in{opacity:1;transform:none}
    .mobile-only{display:none}
    @media (max-width: 1024px){
      .hero-grid,.grid-4,.steps,.grid-3,.article-list,.footer-grid,.form-grid{grid-template-columns:1fr 1fr}
      .nav-links{display:none}
      .menu-btn{display:inline-flex}
    }
    @media (max-width: 720px){
      .hero-main{padding:24px}
      .hero-grid,.grid-4,.grid-3,.grid-2,.steps,.article-list,.footer-grid,.form-grid,.grid-2{grid-template-columns:1fr}
      .hero-metrics{grid-template-columns:1fr}
      .section-head{align-items:flex-start;flex-direction:column}
      .nav{padding:12px 0}
      .brand .t span{display:none}
      .desktop-only{display:none}
      .mobile-only{display:block}
      .nav-open .nav-links{display:flex;flex-direction:column;align-items:flex-start;position:absolute;left:16px;right:16px;top:72px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:12px;box-shadow:var(--shadow)}
      .nav-open .nav-cta{display:none}
      .nav-open .nav-links a{width:100%}
      .客服{display:none}
    }