:root{--bg:#f5f8ff;--card:#ffffff;--line:#dbe5ff;--text:#17233a;--muted:#5b6b84;--blue:#1d4ed8;--blue2:#2f80ff;--cyan:#22c3ff;--soft:#eef4ff;--shadow:0 18px 40px rgba(23,35,58,.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,"PingFang SC","Microsoft YaHei",sans-serif;background:radial-gradient(circle at top left,#eaf2ff 0,#f6f8ff 32%,#f8fbff 100%);color:var(--text)}
    a{color:var(--blue);text-decoration:none} img{display:block;max-width:100%}
    .container{width:min(var(--max),calc(100% - 32px));margin:0 auto}
    .topbar,.nav,.hero,.section,.footer{position:relative}
    header{position:sticky;top:0;z-index:50;background:rgba(245,248,255,.86);backdrop-filter:saturate(150%) blur(10px);border-bottom:1px solid rgba(219,229,255,.8)}
    .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:42px;height:42px;object-fit:contain;border-radius:12px;background:#fff;padding:4px;box-shadow:0 8px 18px rgba(29,78,216,.12)}
    .brand strong{display:block;font-size:16px;line-height:1.2}
    .brand span{display:block;font-size:12px;color:var(--muted)}
    .menu{display:flex;align-items:center;gap:12px;flex-wrap:wrap;justify-content:flex-end}
    .menu a{font-size:14px;color:var(--text);padding:8px 10px;border-radius:999px}
    .menu a:hover,.menu a.active{background:var(--soft);color:var(--blue)}
    .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:11px 16px;font-weight:700;cursor:pointer;transition:.25s ease;box-shadow:0 10px 24px rgba(29,78,216,.12)}
    .btn-primary{background:linear-gradient(135deg,var(--blue),#245ff5 45%,#3f8cff);color:#fff}
    .btn-secondary{background:#fff;border-color:var(--line);color:var(--text);box-shadow:none}
    .btn:hover{transform:translateY(-2px)}
    .mobile-toggle{display:none;background:#fff;border:1px solid var(--line);border-radius:12px;width:44px;height:44px}
    .hero{padding:34px 0 20px}
    .hero-grid{display:grid;grid-template-columns:1.35fr .95fr;gap:24px;align-items:stretch}
    .hero-panel,.card,.stat,.review,.faq-item,.form-panel,.table-panel{background:rgba(255,255,255,.88);border:1px solid rgba(219,229,255,.9);box-shadow:var(--shadow);border-radius:var(--radius)}
    .hero-panel{padding:34px;overflow:hidden}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;background:#eaf2ff;color:var(--blue);border-radius:999px;padding:8px 12px;font-size:13px;font-weight:700}
    h1{margin:18px 0 12px;font-size:clamp(32px,4vw,54px);line-height:1.08;letter-spacing:-.02em}
    .lead{font-size:17px;line-height:1.8;color:var(--muted);max-width:60ch;margin:0 0 22px}
    .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}
    .mini{padding:14px;border-radius:16px;background:linear-gradient(180deg,#f8fbff,#f0f6ff);border:1px solid var(--line)}
    .mini b{display:block;font-size:18px;margin-bottom:4px;color:var(--blue)}
    .mini span{font-size:13px;color:var(--muted)}
    .hero-side{display:grid;gap:14px}
    .side-card{padding:22px}
    .side-card h3{margin:0 0 8px;font-size:20px}
    .side-card p,.card p,.section p{color:var(--muted);line-height:1.8}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:9px 12px;border-radius:999px;background:#f2f7ff;border:1px solid var(--line);font-size:13px;color:#234}
    .section{padding:22px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:16px}
    .section h2{margin:0;font-size:28px}
    .sub{margin:6px 0 0;color:var(--muted)}
    .grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
    .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
    .stat,.card,.review,.faq-item,.form-panel,.table-panel{padding:20px}
    .stat .num{font-size:28px;font-weight:800;color:var(--blue);margin-bottom:6px}
    .card h3,.review h3{margin:0 0 8px;font-size:18px}
    .list{margin:0;padding-left:18px;color:var(--muted);line-height:1.9}
    .workflow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
    .step{padding:20px;border-radius:18px;background:linear-gradient(180deg,#fff,#f5f9ff);border:1px solid var(--line)}
    .step .no{display:inline-flex;width:32px;height:32px;border-radius:10px;align-items:center;justify-content:center;background:var(--blue);color:#fff;font-weight:800;margin-bottom:12px}
    .table-wrap{overflow:auto;border-radius:16px;border:1px solid var(--line)}
    table{width:100%;border-collapse:collapse;min-width:760px;background:#fff}
    th,td{padding:14px 16px;border-bottom:1px solid #edf2ff;text-align:left;font-size:14px;vertical-align:top}
    th{background:#f3f7ff;color:#1f2d4d}
    .badge{display:inline-flex;align-items:center;padding:6px 10px;border-radius:999px;background:#eaf2ff;color:var(--blue);font-size:12px;font-weight:700}
    .blue{color:var(--blue);font-weight:700}
    .faq-item{overflow:hidden}
    .faq-q{display:flex;justify-content:space-between;align-items:center;gap:12px;cursor:pointer;font-weight:700}
    .faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;margin-top:0;color:var(--muted)}
    .faq-item.open .faq-a{max-height:180px;margin-top:12px}
    .reviews .review{display:flex;flex-direction:column;gap:10px}
    .review .meta{font-size:13px;color:var(--muted)}
    .timeline{display:grid;gap:14px}
    .timeline-item{display:grid;grid-template-columns:90px 1fr;gap:14px;align-items:start;padding:16px 18px;border-radius:18px;background:#fff;border:1px solid var(--line)}
    .timeline-item b{color:var(--blue)}
    .articles a{display:block;padding:14px 0;border-bottom:1px dashed #dfe8ff;color:var(--text)}
    .articles a:last-child{border-bottom:0}
    .form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    input,select,textarea{width:100%;border:1px solid #cfdcf9;border-radius:14px;background:#fff;padding:13px 14px;font:inherit;color:var(--text);outline:none}
    textarea{min-height:124px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:var(--blue2);box-shadow:0 0 0 4px rgba(47,128,255,.12)}
    .full{grid-column:1/-1}
    .footer{margin-top:10px;padding:24px 0 30px;background:#edf4ff;border-top:1px solid #d7e4ff;color:#19304f}
    .footer a{color:#123f9b}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:20px}
    .footer small{color:#4a5b79}
    .sticky-float{position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px}
    .float-btn{display:inline-flex;align-items:center;justify-content:center;width:48px;height:48px;border-radius:16px;background:linear-gradient(135deg,var(--blue),#3d8cff);color:#fff;box-shadow:0 16px 30px rgba(29,78,216,.28)}
    .float-panel{display:none;position:fixed;right:16px;bottom:76px;width:min(320px,calc(100vw - 32px));background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);padding:16px;z-index:59}
    .float-panel img{width:100%;border-radius:14px}
    .reveal{opacity:0;transform:translateY(18px);transition:.55s ease}
    .reveal.visible{opacity:1;transform:none}
    .hero::before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(29,78,216,.06),rgba(34,195,255,.05));pointer-events:none}
    @media (max-width: 1024px){
      .hero-grid,.grid-4,.workflow,.grid-3,.grid-2,.footer-grid{grid-template-columns:1fr}
      .hero-points,.form-grid{grid-template-columns:1fr 1fr}
    }
    @media (max-width: 768px){
      header{position:sticky}
      .menu{display:none;flex-direction:column;align-items:stretch;width:100%;padding:10px 0}
      .menu.open{display:flex}
      .nav{flex-wrap:wrap}
      .nav-actions{margin-left:auto}
      .mobile-toggle{display:inline-flex;align-items:center;justify-content:center}
      .hero-panel{padding:24px}
      h1{font-size:30px}
      .lead{font-size:15px}
      .hero-points,.form-grid{grid-template-columns:1fr}
      .section h2{font-size:24px}
      .section-head{align-items:start;flex-direction:column}
      .timeline-item{grid-template-columns:1fr}
      .float-panel{left:16px;right:16px;width:auto}
    }