:root{
      --bg:#f7f8fb;
      --card:#ffffff;
      --card2:#f3f7ff;
      --text:#16212f;
      --muted:#5b6473;
      --line:#dfe5ef;
      --brand:#2563eb;
      --brand2:#7c3aed;
      --accent:#00b8d9;
      --warm:#ffb547;
      --shadow:0 18px 50px rgba(31,54,102,.10);
      --shadow2:0 10px 28px rgba(37,99,235,.14);
      --radius:20px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(124,58,237,.10), transparent 28%),
        radial-gradient(circle at top right, rgba(0,184,217,.08), transparent 24%),
        linear-gradient(180deg, #ffffff 0%, #f7f8fb 28%, #f5f7fc 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%;height:auto}
    .container{width:min(100% - 32px, var(--container));margin:0 auto}
    .topbar,.nav,.hero,.section,.footer{width:100%}
    .site-header{
      position:sticky;top:0;z-index:50;
      backdrop-filter:saturate(1.4) blur(16px);
      background:rgba(255,255,255,.72);
      border-bottom:1px solid rgba(223,229,239,.8);
    }
    .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:44px;height:44px;object-fit:contain;border-radius:12px;background:#fff;border:1px solid var(--line);padding:4px;box-shadow:0 8px 18px rgba(0,0,0,.05)}
    .brand strong{font-size:1.02rem;letter-spacing:.2px}
    .brand span{display:block;font-size:.82rem;color:var(--muted);margin-top:2px}
    .menu{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    .menu a{font-size:.95rem;color:#253244;padding:8px 10px;border-radius:999px;transition:.25s ease}
    .menu a:hover{background:#eef4ff;color:var(--brand)}
    .nav-actions{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:.25s ease;cursor:pointer;white-space:nowrap
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:var(--shadow2)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 34px rgba(37,99,235,.22)}
    .btn-ghost{background:#fff;border-color:var(--line);color:var(--text)}
    .btn-ghost:hover{border-color:#bdd0ff;color:var(--brand);transform:translateY(-1px)}
    .burger{display:none;background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px;cursor:pointer}
    .hero{
      padding:42px 0 18px;
      position:relative;
    }
    .hero-grid{
      display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:stretch;
    }
    .hero-panel{
      background:
        linear-gradient(135deg, rgba(37,99,235,.10), rgba(124,58,237,.08)),
        linear-gradient(180deg, #ffffff 0%, #f9fbff 100%);
      border:1px solid rgba(191,207,239,.85);
      border-radius:28px;
      padding:28px;
      box-shadow:var(--shadow);
      position:relative;overflow:hidden;
    }
    .hero-panel:before,.hero-panel:after{
      content:"";position:absolute;border-radius:50%;filter:blur(6px);opacity:.7;pointer-events:none
    }
    .hero-panel:before{width:180px;height:180px;background:rgba(0,184,217,.12);right:-40px;top:-40px}
    .hero-panel:after{width:220px;height:220px;background:rgba(124,58,237,.10);left:-70px;bottom:-80px}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      padding:8px 12px;border-radius:999px;background:#eff6ff;color:#1d4ed8;
      font-weight:700;font-size:.85rem;margin-bottom:16px
    }
    h1{margin:0 0 14px;font-size:clamp(2rem,4vw,3.45rem);line-height:1.08;letter-spacing:-.03em}
    .hero p{margin:0;color:var(--muted);font-size:1.05rem;line-height:1.85;max-width:62ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
    .hero-meta{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:24px}
    .meta-card{
      background:rgba(255,255,255,.82);
      border:1px solid rgba(223,229,239,.9);
      border-radius:18px;padding:16px 14px;box-shadow:0 10px 20px rgba(15,23,42,.05)
    }
    .meta-card b{display:block;font-size:1.14rem;margin-bottom:6px}
    .meta-card span{color:var(--muted);font-size:.92rem;line-height:1.5}
    .hero-side{
      display:grid;gap:16px;
    }
    .side-card{
      background:linear-gradient(180deg,#fff 0%, #fbfcff 100%);
      border:1px solid var(--line);border-radius:24px;padding:20px;box-shadow:var(--shadow)
    }
    .side-card h2,.section-head h2{margin:0 0 10px;font-size:1.55rem}
    .section-head p{margin:0;color:var(--muted);line-height:1.8}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{
      background:#fff;border:1px solid var(--line);border-radius:999px;padding:9px 12px;
      font-size:.9rem;color:#334155;box-shadow:0 6px 14px rgba(15,23,42,.04)
    }
    .section{padding:20px 0}
    .section-card{
      background:rgba(255,255,255,.86);
      border:1px solid rgba(223,229,239,.92);
      border-radius:28px;padding:26px;box-shadow:var(--shadow)
    }
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:18px;flex-wrap:wrap}
    .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{
      background:linear-gradient(180deg,#fff 0%, #fbfdff 100%);
      border:1px solid var(--line);border-radius:22px;padding:20px;
      box-shadow:0 10px 22px rgba(15,23,42,.05);transition:.25s ease
    }
    .card:hover{transform:translateY(-3px);box-shadow:0 16px 32px rgba(37,99,235,.11)}
    .card h3{margin:0 0 10px;font-size:1.08rem}
    .card p,.card li{margin:0;color:var(--muted);line-height:1.8}
    .stat{
      font-size:1.8rem;font-weight:800;letter-spacing:-.03em;margin-bottom:6px;
      background:linear-gradient(135deg,var(--brand),var(--brand2));
      -webkit-background-clip:text;background-clip:text;color:transparent
    }
    .timeline{display:grid;gap:14px}
    .timeline-item{
      display:grid;grid-template-columns:70px 1fr;gap:14px;align-items:start;
      padding:16px;border:1px solid var(--line);border-radius:18px;background:#fff
    }
    .time-pill{
      display:inline-flex;align-items:center;justify-content:center;
      padding:8px 10px;border-radius:12px;background:#eff6ff;color:#1d4ed8;font-weight:700
    }
    .table-wrap{overflow-x:auto;border-radius:20px;border:1px solid var(--line);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:16px 14px;border-bottom:1px solid #edf1f7;text-align:left;vertical-align:top}
    th{background:#f8fbff;color:#1f2b3a;font-size:.95rem}
    td{color:var(--muted);line-height:1.8}
    .strong{color:#0f172a;font-weight:700}
    .badge{
      display:inline-flex;align-items:center;gap:6px;padding:7px 10px;border-radius:999px;
      background:#eefdf8;color:#0f766e;font-size:.85rem;font-weight:700
    }
    .compare-box{
      display:grid;grid-template-columns:.9fr 1.1fr;gap:16px;align-items:stretch
    }
    .score{
      background:linear-gradient(135deg,#1d4ed8,#7c3aed);
      color:#fff;border-radius:24px;padding:24px;box-shadow:var(--shadow2)
    }
    .score .big{font-size:3rem;font-weight:900;line-height:1}
    .score p{margin:10px 0 0;opacity:.92;line-height:1.8}
    .accordion{display:grid;gap:12px}
    .faq-item{
      border:1px solid var(--line);border-radius:18px;background:#fff;overflow:hidden
    }
    .faq-q{
      width:100%;display:flex;align-items:center;justify-content:space-between;gap:12px;
      padding:16px 18px;background:none;border:none;font-size:1rem;font-weight:700;color:var(--text);text-align:left;cursor:pointer
    }
    .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;padding:0 18px}
    .faq-a p{margin:0;color:var(--muted);line-height:1.8;padding-bottom:16px}
    .faq-item.active .faq-a{max-height:220px}
    .faq-item.active .faq-q{color:var(--brand)}
    .reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .quote{font-size:2rem;line-height:1;color:#c7d2fe;margin-bottom:12px}
    .reviewer{display:flex;justify-content:space-between;align-items:center;margin-top:14px;gap:12px}
    .reviewer strong{display:block}
    .reviewer span{color:var(--muted);font-size:.9rem}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .field{display:flex;flex-direction:column;gap:8px}
    label{font-weight:700;font-size:.95rem}
    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:.2s ease
    }
    input:focus,select:focus,textarea:focus{border-color:#8bb2ff;box-shadow:0 0 0 4px rgba(37,99,235,.10)}
    textarea{min-height:124px;resize:vertical}
    .full{grid-column:1/-1}
    .footer{
      margin-top:10px;
      background:#0f172a;color:#e5eefc;
      border-top:1px solid rgba(255,255,255,.08)
    }
    .footer a{color:#c7d2fe}
    .footer .container{padding:28px 0}
    .footer-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:18px}
    .footer small,.footer p,.footer li{color:#cbd5e1;line-height:1.8}
    .footer .mini-links{display:flex;flex-wrap:wrap;gap:10px}
    .footer .mini-links a{padding:8px 10px;border-radius:999px;background:rgba(255,255,255,.06)}
    .subfooter{margin-top:18px;padding-top:18px;border-top:1px solid rgba(255,255,255,.08);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
    .float-tools{
      position:fixed;right:16px;bottom:18px;z-index:60;display:grid;gap:10px
    }
    .float-btn{
      width:54px;height:54px;border-radius:18px;display:grid;place-items:center;
      background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;
      box-shadow:0 16px 30px rgba(37,99,235,.28);border:none;cursor:pointer
    }
    .float-link{
      width:auto;padding:0 14px;height:54px;border-radius:18px;display:inline-flex;align-items:center;gap:8px;
      color:#fff;background:linear-gradient(135deg,#10b981,#0ea5e9);box-shadow:0 16px 30px rgba(14,165,233,.22)
    }
    .wechat-pop{
      position:fixed;right:16px;bottom:82px;z-index:59;width:min(280px,calc(100vw - 32px));
      background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);padding:14px;
      opacity:0;pointer-events:none;transform:translateY(8px);transition:.22s ease
    }
    .wechat-pop.show{opacity:1;pointer-events:auto;transform:translateY(0)}
    .wechat-pop h3{margin:0 0 8px;font-size:1rem}
    .wechat-pop p{margin:6px 0 0;color:var(--muted);line-height:1.7;font-size:.93rem}
    .scroll-top{display:none}
    .mobile-menu{display:none}
    .article-list,.service-network,.detail-list{display:grid;gap:12px}
    .article-item,.network-item,.detail-item{
      display:flex;justify-content:space-between;gap:12px;align-items:flex-start;
      padding:14px 16px;border:1px solid var(--line);border-radius:16px;background:#fff
    }
    .article-item span,.network-item span,.detail-item span{color:var(--muted);font-size:.92rem;line-height:1.7}
    .mini-pills{display:flex;flex-wrap:wrap;gap:10px;margin-top:10px}
    .mini-pills span{padding:8px 10px;border-radius:999px;background:#f1f5f9;color:#334155;font-size:.86rem}
    .images-row{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .images-row img{border-radius:18px;border:1px solid var(--line);box-shadow:0 10px 22px rgba(15,23,42,.05)}
    .split{display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:stretch}
    .center{display:flex;align-items:center;justify-content:center}
    .muted{color:var(--muted)}
    @media (max-width: 1024px){
      .hero-grid,.compare-box,.footer-grid,.split,.grid-4,.grid-3,.reviews,.images-row{grid-template-columns:1fr 1fr}
      .grid-4{grid-template-columns:repeat(2,1fr)}
      .hero-meta{grid-template-columns:1fr}
      .form-grid{grid-template-columns:1fr}
    }
    @media (max-width: 760px){
      .menu,.nav-actions{display:none}
      .burger{display:inline-flex}
      .mobile-menu{
        display:none;border-top:1px solid var(--line);background:rgba(255,255,255,.94)
      }
      .mobile-menu.open{display:block}
      .mobile-menu .container{padding:12px 0 16px}
      .mobile-menu a{display:block;padding:12px 0;border-bottom:1px solid #edf1f7;color:#223043}
      .hero{padding-top:22px}
      .hero-grid,.compare-box,.footer-grid,.split,.grid-4,.grid-3,.grid-2,.reviews,.images-row{grid-template-columns:1fr}
      .section-card,.hero-panel{padding:20px;border-radius:22px}
      .section-head{align-items:flex-start}
      h1{font-size:2.05rem}
      .timeline-item{grid-template-columns:1fr}
      .float-tools{right:12px;bottom:12px}
    }
    .reveal{opacity:0;transform:translateY(16px);transition:.65s ease}
    .reveal.in{opacity:1;transform:none}
    .kpi{
      display:flex;flex-direction:column;gap:8px;align-items:flex-start
    }
    .kpi .label{font-size:.9rem;color:var(--muted)}
    .kpi .value{font-size:1.35rem;font-weight:900}
    .table-note{margin-top:12px;color:var(--muted);font-size:.92rem;line-height:1.8}