:root{
      --bg:#f5f7fb;
      --panel:#ffffff;
      --panel-2:#f8fbff;
      --text:#152033;
      --muted:#5d6b86;
      --line:#dfe7f3;
      --brand:#2d5bff;
      --brand-2:#7f5cff;
      --accent:#15b8a6;
      --gold:#ffb84d;
      --shadow:0 18px 50px rgba(33, 59, 120, .10);
      --radius:22px;
      --radius-sm:14px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(45,91,255,.10), transparent 30%),
        radial-gradient(circle at top right, rgba(127,92,255,.10), transparent 28%),
        linear-gradient(180deg,#f9fbff 0%,#f5f7fb 100%);
    }
    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:30;
      backdrop-filter:blur(14px);
      background:rgba(245,247,251,.82);
      border-bottom:1px solid rgba(223,231,243,.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;border-radius:10px;background:#fff;padding:4px;border:1px solid var(--line)}
    .brand strong{display:block;font-size:18px;line-height:1.1}
    .brand span{display:block;font-size:12px;color:var(--muted);margin-top:4px}
    .navlinks{display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:flex-end}
    .navlinks a{font-size:14px;color:var(--muted);padding:8px 11px;border-radius:999px;transition:.2s}
    .navlinks a:hover{background:#eaf0ff;color:var(--brand)}
    .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:.25s;cursor:pointer}
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:0 12px 30px rgba(45,91,255,.22)}
    .btn-secondary{background:#fff;color:var(--text);border-color:var(--line)}
    .btn:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(25,38,70,.12)}
    .menu-btn{display:none;background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px 12px}
    .hero{padding:54px 0 24px;position:relative}
    .hero-grid{display:grid;grid-template-columns:1.18fr .82fr;gap:24px;align-items:stretch}
    .hero-main,.hero-side,.section-card,.panel{
      background:linear-gradient(180deg,rgba(255,255,255,.98),rgba(248,250,255,.96));
      border:1px solid rgba(223,231,243,.95);
      box-shadow:var(--shadow);
      border-radius:var(--radius);
    }
    .hero-main{padding:34px;position:relative;overflow:hidden}
    .hero-main:before{
      content:"";position:absolute;inset:auto -80px -80px auto;width:240px;height:240px;border-radius:50%;
      background:radial-gradient(circle, rgba(45,91,255,.16), transparent 68%);
    }
    .eyebrow{display:inline-flex;align-items:center;gap:8px;background:#eef4ff;color:var(--brand);padding:8px 12px;border-radius:999px;font-size:13px;font-weight:700}
    h1{margin:16px 0 14px;font-size:clamp(30px,4vw,52px);line-height:1.08;letter-spacing:-.02em}
    .hero p{margin:0;color:var(--muted);font-size:16px;line-height:1.8;max-width:62ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
    .hero-points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:26px}
    .mini-stat{padding:16px;border:1px solid var(--line);border-radius:18px;background:#fff}
    .mini-stat strong{display:block;font-size:22px;margin-bottom:6px}
    .mini-stat span{display:block;font-size:13px;color:var(--muted);line-height:1.5}
    .hero-side{padding:24px;display:grid;gap:14px}
    .side-card{padding:18px;border-radius:18px;background:linear-gradient(180deg,#f7faff,#ffffff);border:1px solid var(--line)}
    .side-card h3{margin:0 0 8px;font-size:17px}
    .side-card p,.small{margin:0;color:var(--muted);line-height:1.7;font-size:14px}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
    .tag-cloud span{padding:8px 11px;border-radius:999px;background:#eff4ff;border:1px solid #dbe6ff;color:#3551a8;font-size:13px}
    section{padding:18px 0}
    .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:14px}
    .section-head h2{margin:0;font-size:28px}
    .section-head p{margin:0;color:var(--muted);line-height:1.7;max-width:70ch}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .card{background:linear-gradient(180deg,#fff,#f9fbff);border:1px solid var(--line);border-radius:20px;padding:22px;box-shadow:0 10px 26px rgba(34,58,103,.06);transition:.25s}
    .card:hover{transform:translateY(-3px);box-shadow:0 18px 36px rgba(34,58,103,.10)}
    .card h3{margin:0 0 10px;font-size:18px}
    .card p,.card li{color:var(--muted);line-height:1.75}
    .metric{font-size:30px;font-weight:800;color:var(--brand);line-height:1}
    .metric-label{margin-top:8px;color:var(--muted);font-size:14px}
    .list{margin:0;padding-left:18px}
    .timeline{display:grid;gap:12px}
    .step{display:flex;gap:14px;align-items:flex-start;padding:18px;border-radius:18px;background:#fff;border:1px solid var(--line)}
    .step .num{min-width:38px;height:38px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,#2d5bff,#7f5cff);color:#fff;font-weight:800}
    .table-wrap{overflow:auto;border:1px solid var(--line);border-radius:18px;background:#fff}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:16px 14px;border-bottom:1px solid var(--line);text-align:left;font-size:14px;vertical-align:top}
    th{background:#f4f7ff;color:#20304c}
    td{color:var(--muted)}
    .compare-badge{display:inline-flex;padding:7px 10px;border-radius:999px;background:#ecfff8;color:#0e7a64;font-weight:700;font-size:13px}
    details{background:#fff;border:1px solid var(--line);border-radius:16px;padding:0 16px}
    details+details{margin-top:12px}
    summary{cursor:pointer;list-style:none;padding:16px 0;font-weight:700}
    summary::-webkit-details-marker{display:none}
    details p{margin:0 0 16px;color:var(--muted);line-height:1.8}
    .review{display:flex;flex-direction:column;gap:10px}
    .review .who{display:flex;justify-content:space-between;gap:10px;align-items:center}
    .stars{color:#ffb02e;font-size:18px;letter-spacing:1px}
    .case{
      padding:20px;border-radius:20px;background:
      linear-gradient(135deg, rgba(45,91,255,.06), rgba(127,92,255,.05)),
      #fff;border:1px solid var(--line)
    }
    .article-list{display:grid;gap:10px}
    .article-item{display:flex;justify-content:space-between;gap:16px;padding:14px 16px;border-radius:14px;border:1px solid var(--line);background:#fff}
    .article-item span{color:var(--muted)}
    .form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    label{display:block;font-size:14px;font-weight:700;margin-bottom:8px}
    input,select,textarea{
      width:100%;padding:13px 14px;border-radius:14px;border:1px solid #d9e3f1;background:#fff;color:var(--text);
      font:inherit;outline:none;transition:.2s
    }
    input:focus,select:focus,textarea:focus{border-color:rgba(45,91,255,.55);box-shadow:0 0 0 4px rgba(45,91,255,.10)}
    textarea{min-height:120px;resize:vertical}
    .full{grid-column:1/-1}
    .footer{
      margin-top:20px;padding:24px 0 28px;background:#eef3fb;border-top:1px solid #dfe7f3;color:#21314f
    }
    .footer a{color:#274dbd}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:18px;align-items:start}
    .footer small{color:#5f6f8b;line-height:1.7}
    .subtle{color:var(--muted)}
    .floating{
      position:fixed;right:16px;bottom:16px;z-index:40;display:grid;gap:10px
    }
    .float-btn{display:inline-flex;align-items:center;justify-content:center;width:52px;height:52px;border-radius:16px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);font-size:18px}
    .kefu-box{
      position:fixed;left:16px;bottom:16px;z-index:40;max-width:260px;padding:14px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)
    }
    .kefu-box img{width:100%;border-radius:12px;border:1px solid var(--line);margin-top:10px}
    .mobile-only{display:none}
    .badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
    .badge-row span{background:#fff;border:1px solid var(--line);padding:8px 10px;border-radius:12px;font-size:13px;color:#49607f}
    .scroll-reveal{opacity:0;transform:translateY(14px);transition:opacity .6s ease, transform .6s ease}
    .scroll-reveal.in{opacity:1;transform:none}
    @media (max-width: 980px){
      .hero-grid,.grid-4,.grid-3,.grid-2,.footer-grid{grid-template-columns:1fr}
      .navlinks,.nav-cta{display:none}
      .menu-btn{display:inline-flex}
      .mobile-only{display:block}
      .hero{padding-top:24px}
      .hero-main{padding:24px}
      .hero-points{grid-template-columns:1fr}
      .form-grid{grid-template-columns:1fr}
    }
    .mobile-menu{display:none;padding:0 0 14px}
    .mobile-menu.open{display:block}
    .mobile-menu a{display:block;padding:12px 4px;border-top:1px solid rgba(223,231,243,.8);color:var(--muted)}
    .mobile-menu a:hover{color:var(--brand)}