:root{
      --bg:#f6f8fc;
      --panel:#ffffff;
      --panel-2:#f4f7ff;
      --line:#dde4f2;
      --text:#162033;
      --muted:#5f6b84;
      --brand:#286bff;
      --brand-2:#ff5d4e;
      --brand-3:#15c3a5;
      --shadow:0 18px 48px rgba(26,43,82,.10);
      --shadow-soft:0 10px 24px rgba(26,43,82,.08);
      --radius:20px;
      --radius-sm:14px;
      --max: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;background:linear-gradient(180deg,#f7f9ff 0%,#f4f7fb 46%,#eef3ff 100%);color:var(--text)}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(100% - 32px,var(--max));margin:0 auto}
    .topbar{position:sticky;top:0;z-index:50;background:rgba(246,248,252,.88);backdrop-filter:blur(14px);border-bottom:1px solid rgba(221,228,242,.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);box-shadow:var(--shadow-soft)}
    .brand strong{display:block;font-size:18px;line-height:1.1}
    .brand span{display:block;font-size:12px;color:var(--muted);margin-top:4px}
    .nav-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:14px;color:#32405c;padding:8px 10px;border-radius:999px;transition:.2s}
    .nav-links a:hover,.nav-links a:focus{background:#eaf0ff;color:#17306a}
    .nav-cta{display:flex;align-items:center;gap:10px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:999px;padding:12px 18px;font-weight:700;cursor:pointer;transition:.22s ease;box-shadow:var(--shadow-soft)}
    .btn-primary{background:linear-gradient(135deg,var(--brand) 0%,#6a7dff 100%);color:#fff}
    .btn-secondary{background:#fff;color:#17306a;border:1px solid var(--line)}
    .btn-accent{background:linear-gradient(135deg,var(--brand-2),#ff8b55);color:#fff}
    .btn:hover{transform:translateY(-1px)}
    .menu-btn{display:none;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 12px}
    .hero{padding:54px 0 28px;position:relative;overflow:hidden}
    .hero::before,.hero::after{content:"";position:absolute;border-radius:999px;filter:blur(8px);pointer-events:none}
    .hero::before{width:340px;height:340px;background:radial-gradient(circle,rgba(40,107,255,.16),transparent 70%);top:-70px;right:-90px}
    .hero::after{width:260px;height:260px;background:radial-gradient(circle,rgba(255,93,78,.14),transparent 70%);left:-90px;bottom:-80px}
    .hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:28px;align-items:stretch}
    .hero-card{background:linear-gradient(160deg,#fff 0%,#f8fbff 100%);border:1px solid rgba(221,228,242,.9);border-radius:28px;box-shadow:var(--shadow);padding:32px;position:relative;overflow:hidden}
    .hero-card::after{content:"";position:absolute;inset:auto -60px -70px auto;width:220px;height:220px;background:linear-gradient(135deg,rgba(40,107,255,.12),rgba(255,93,78,.08));border-radius:50%}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;background:#eef4ff;color:#2147a5;border:1px solid #d6e1ff;padding:8px 12px;border-radius:999px;font-size:13px;font-weight:700}
    h1{font-size:clamp(32px,4.2vw,56px);line-height:1.05;margin:18px 0 14px;letter-spacing:-.02em}
    .hero p{font-size:16px;line-height:1.8;color:var(--muted);margin:0 0 22px;max-width:58ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:22px}
    .hero-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
    .point{background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px}
    .point b{display:block;font-size:18px;margin-bottom:4px}
    .point span{font-size:13px;color:var(--muted);line-height:1.5}
    .hero-side{display:grid;gap:14px}
    .metric-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .metric{background:linear-gradient(180deg,#fff 0%,#f5f8ff 100%);border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:var(--shadow-soft)}
    .metric strong{display:block;font-size:24px;margin-bottom:6px}
    .metric span{font-size:13px;color:var(--muted)}
    .side-panel{background:linear-gradient(160deg,#12233f 0%,#203968 100%);color:#fff;border-radius:28px;padding:22px;box-shadow:var(--shadow)}
    .side-panel h2,.section-title h2{margin:0}
    .side-panel h3{margin:0 0 10px;font-size:20px}
    .side-panel p{margin:0 0 16px;color:#d4ddf4;line-height:1.75}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag-cloud span{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.16);padding:8px 12px;border-radius:999px;font-size:13px}
    section{padding:26px 0}
    .section-title{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:18px}
    .section-title p{margin:0;color:var(--muted);line-height:1.7;max-width:70ch}
    .section-title h2{font-size:28px}
    .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:16px}
    .card{background:var(--panel);border:1px solid var(--line);border-radius:22px;padding:20px;box-shadow:var(--shadow-soft);transition:.22s}
    .card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
    .card h3{margin:0 0 10px;font-size:18px}
    .card p,.card li{color:var(--muted);line-height:1.75}
    .list{padding-left:18px;margin:0}
    .workflow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .step{position:relative;padding-top:18px}
    .step::before{content:attr(data-step);position:absolute;top:-8px;left:18px;background:linear-gradient(135deg,var(--brand),#6f84ff);color:#fff;width:36px;height:36px;border-radius:12px;display:grid;place-items:center;font-weight:800;box-shadow:var(--shadow-soft)}
    .step .card{padding-top:28px}
    .table-wrap{overflow-x:auto;border-radius:22px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-soft)}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:16px 14px;border-bottom:1px solid #edf1f8;text-align:left;vertical-align:top}
    th{background:#f6f9ff;font-size:14px}
    td{font-size:14px;color:#41516d}
    .badge{display:inline-flex;align-items:center;gap:6px;padding:7px 10px;border-radius:999px;background:#eef4ff;color:#1f4bb3;font-size:12px;font-weight:700}
    .dual{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .accordion{display:grid;gap:12px}
    details{background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow-soft);overflow:hidden}
    summary{list-style:none;cursor:pointer;padding:18px 18px;font-weight:700;display:flex;justify-content:space-between;gap:12px}
    summary::-webkit-details-marker{display:none}
    details p{margin:0;padding:0 18px 18px;color:var(--muted);line-height:1.8}
    .quotes{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .quote{background:linear-gradient(180deg,#fff 0%,#f8fbff 100%);border:1px solid var(--line);border-radius:22px;padding:20px;box-shadow:var(--shadow-soft)}
    .quote .meta{display:flex;align-items:center;gap:12px;margin-bottom:12px}
    .avatar{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,#286bff,#ff7e5a)}
    .quote strong{display:block}
    .quote small{color:var(--muted)}
    .case-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:16px}
    .thumbs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
    .thumbs img,.side-media img,.gallery img{width:100%;border-radius:18px;border:1px solid var(--line);object-fit:cover;background:#fff}
    .side-media{display:grid;gap:12px}
    .articles{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .article a{color:#17306a;font-weight:700}
    .article time{display:block;color:var(--muted);font-size:13px;margin-bottom:8px}
    .form{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .field{display:grid;gap:8px}
    .field.full{grid-column:1/-1}
    label{font-size:14px;font-weight:700}
    input,select,textarea{width:100%;border:1px solid var(--line);border-radius:14px;padding:13px 14px;font:inherit;background:#fff;color:var(--text);outline:none;transition:.2s}
    textarea{min-height:120px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:#94abff;box-shadow:0 0 0 4px rgba(40,107,255,.10)}
    .footer{padding:26px 0 30px;border-top:1px solid rgba(221,228,242,.8);background:#f8fbff;color:#22304c}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:18px}
    .foot-links{display:flex;flex-wrap:wrap;gap:10px}
    .foot-links a{padding:8px 10px;background:#eef4ff;border-radius:999px;color:#2147a5;font-size:13px}
    .floating{position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px}
    .float-btn{width:52px;height:52px;border-radius:16px;display:grid;place-items:center;background:linear-gradient(135deg,var(--brand),#6f84ff);color:#fff;box-shadow:var(--shadow);border:0}
    .kefu{position:fixed;left:16px;bottom:16px;z-index:60;max-width:160px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:12px;box-shadow:var(--shadow-soft)}
    .kefu img{border-radius:12px;margin-top:8px}
    .mobile-toggle{display:none}
    @media (max-width: 980px){
      .hero-grid,.grid-3,.grid-4,.workflow,.quotes,.articles,.case-grid,.footer-grid,.dual{grid-template-columns:1fr}
      .hero-points,.metric-grid,.thumbs,.form{grid-template-columns:1fr 1fr}
      .section-title{align-items:start;flex-direction:column}
      .nav-links{display:none}
      .menu-btn{display:inline-flex}
      .mobile-toggle{display:block}
      .nav.open .nav-links{display:flex;position:absolute;left:16px;right:16px;top:74px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:12px;flex-direction:column;align-items:stretch;box-shadow:var(--shadow)}
      .nav.open .nav-links a{padding:12px 14px}
      .nav.open .nav-cta{display:none}
      .nav{position:relative}
    }
    @media (max-width: 640px){
      .hero{padding-top:34px}
      .hero-card,.card,.side-panel{padding:20px}
      .hero-points,.metric-grid,.thumbs,.form{grid-template-columns:1fr}
      .kefu{max-width:138px}
    }
    .reveal{opacity:0;transform:translateY(18px);transition:.6s ease}
    .reveal.show{opacity:1;transform:none}