:root{
      --bg:#f7f8fc;
      --panel:#ffffff;
      --panel-2:#fff7ef;
      --text:#162033;
      --muted:#5f6b84;
      --line:#e5e8f1;
      --brand:#ff5c5c;
      --brand-2:#ffb347;
      --brand-3:#5b7cff;
      --shadow:0 18px 50px rgba(22,32,51,.10);
      --radius:20px;
      --container: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, rgba(91,124,255,.10), transparent 28%),
      radial-gradient(circle at right top, rgba(255,92,92,.10), transparent 22%),
      linear-gradient(180deg, #fbfcff 0%, #f7f8fc 100%);
      color:var(--text);line-height:1.65}
    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,.section,.footer{width:100%}
    .topbar{background:rgba(255,255,255,.75);backdrop-filter:blur(10px);border-bottom:1px solid rgba(229,232,241,.8);position:sticky;top:0;z-index:40}
    .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(0,0,0,.06)}
    .brand strong{font-size:18px;letter-spacing:.4px}
    .brand span{display:block;font-size:12px;color:var(--muted)}
    .menu{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    .menu a{font-size:14px;color:#2b3550;padding:8px 10px;border-radius:999px;transition:.25s ease}
    .menu a:hover,.menu a:focus-visible{background:#fff;color:var(--brand);box-shadow:0 8px 18px rgba(255,92,92,.12)}
    .nav-actions{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:.25s ease;box-shadow:none}
    .btn-primary{background:linear-gradient(135deg,var(--brand),#ff7a3d);color:#fff;box-shadow:0 14px 28px rgba(255,92,92,.24)}
    .btn-secondary{background:#fff;color:var(--text);border:1px solid var(--line)}
    .btn:hover{transform:translateY(-2px);box-shadow:0 16px 30px rgba(22,32,51,.12)}
    .burger{display:none;background:#fff;border:1px solid var(--line);width:44px;height:44px;border-radius:14px}
    .hero{padding:32px 0 18px}
    .hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:22px;align-items:stretch}
    .hero-card{background:
      linear-gradient(135deg, rgba(255,92,92,.98), rgba(91,124,255,.96));
      color:#fff;border-radius:28px;padding:34px;position:relative;overflow:hidden;box-shadow:var(--shadow)}
    .hero-card:before,.hero-card:after{content:"";position:absolute;border-radius:50%;background:rgba(255,255,255,.10)}
    .hero-card:before{width:220px;height:220px;right:-70px;top:-60px}
    .hero-card:after{width:160px;height:160px;right:40px;bottom:-70px}
    .hero h1{margin:12px 0 12px;font-size:clamp(30px,5vw,52px);line-height:1.12}
    .hero p{margin:0;color:rgba(255,255,255,.9);max-width:56ch}
    .hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin:20px 0}
    .pill{padding:8px 12px;border-radius:999px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.2);font-size:13px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
    .hero-side{display:grid;gap:14px}
    .mini-card{background:rgba(255,255,255,.86);border:1px solid rgba(229,232,241,.9);border-radius:24px;padding:20px;box-shadow:var(--shadow)}
    .mini-card h3{margin:0 0 8px;font-size:18px}
    .mini-card ul{margin:0;padding:0;list-style:none;display:grid;gap:10px}
    .mini-card li{display:flex;justify-content:space-between;gap:12px;color:#2b3550;font-size:14px}
    .mini-card li span{color:var(--muted)}
    .section{padding:18px 0}
    .section-title{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:16px}
    .section-title h2{margin:0;font-size:clamp(22px,3vw,32px)}
    .section-title p{margin:0;color:var(--muted);max-width:60ch}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:0 10px 26px rgba(22,32,51,.05);transition:.25s ease}
    .card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .metric{font-size:30px;font-weight:800;margin:8px 0 6px}
    .muted{color:var(--muted)}
    .tagcloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{background:#fff;border:1px solid var(--line);padding:8px 12px;border-radius:999px;font-size:13px;color:#2b3550}
    .split{display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:start}
    .feature-list{display:grid;gap:12px;margin:0;padding:0;list-style:none}
    .feature-list li{display:flex;gap:12px;align-items:flex-start;padding:12px 0;border-bottom:1px dashed var(--line)}
    .feature-list li:last-child{border-bottom:0;padding-bottom:0}
    .dot{width:10px;height:10px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand-3));margin-top:7px;flex:0 0 auto}
    .step{position:relative}
    .step-num{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand-3));color:#fff;display:grid;place-items:center;font-weight:800;margin-bottom:10px}
    .table-wrap{overflow:auto;border-radius:22px;border:1px solid var(--line);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:820px}
    th,td{padding:16px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
    th{background:#fbfcff;font-size:14px}
    tr:last-child td{border-bottom:0}
    .rating{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
    .stars{color:#ffb000;font-size:20px;letter-spacing:1px}
    .accordion{display:grid;gap:12px}
    .qa{background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden}
    .qa button{width:100%;text-align:left;background:none;border:0;padding:16px 18px;font:inherit;font-weight:700;color:var(--text);display:flex;justify-content:space-between;gap:16px;cursor:pointer}
    .qa .answer{max-height:0;overflow:hidden;transition:max-height .3s ease;padding:0 18px;color:var(--muted)}
    .qa.open .answer{padding-bottom:16px;max-height:240px}
    .reviews .card h3{margin:0 0 8px;font-size:16px}
    .avatar{width:44px;height:44px;border-radius:14px;background:linear-gradient(135deg,#ffebe7,#e8efff);display:grid;place-items:center;font-weight:800;color:#223}
    .review-head{display:flex;gap:12px;align-items:center;margin-bottom:12px}
    .form{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .field{display:grid;gap:8px}
    label{font-size:14px;font-weight:700}
    input,select,textarea{width:100%;padding:13px 14px;border-radius:14px;border:1px solid var(--line);background:#fff;color:var(--text);font:inherit;outline:none}
    textarea{min-height:120px;grid-column:1/-1;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:#ff8a5f;box-shadow:0 0 0 4px rgba(255,122,61,.12)}
    .footer{margin-top:18px;background:#111827;color:#e8edf8;padding:28px 0 18px}
    .footer a{color:#fff}
    .footer .muted{color:#b9c3d8}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:18px}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px}
    .footer-links a{background:rgba(255,255,255,.08);padding:8px 12px;border-radius:999px}
    .foot-bottom{margin-top:18px;padding-top:14px;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
    .floating{position:fixed;right:16px;bottom:16px;z-index:50;display:grid;gap:10px}
    .float-btn{width:52px;height:52px;border-radius:18px;background:linear-gradient(135deg,var(--brand),#ff7a3d);color:#fff;display:grid;place-items:center;box-shadow:0 16px 30px rgba(255,92,92,.28)}
    .reveal{opacity:0;transform:translateY(18px);transition:.6s ease}
    .reveal.show{opacity:1;transform:none}
    .mobile-menu{display:none}
    .article-list{display:grid;gap:12px}
    .article-item{display:flex;justify-content:space-between;gap:12px;padding:14px 16px;background:#fff;border:1px solid var(--line);border-radius:16px}
    .badge{display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border-radius:999px;background:#fff1ec;color:#d63d2d;font-size:12px;font-weight:700}
    .timeline{display:grid;gap:14px}
    .timeline-item{display:grid;grid-template-columns:86px 1fr;gap:16px;align-items:start;padding:14px 0;border-bottom:1px solid var(--line)}
    .timeline-item:last-child{border-bottom:0}
    .kpi{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
    .kpi .card{background:linear-gradient(180deg,#fff, #fff9f4)}
    @media (max-width: 980px){
      .hero-grid,.split,.grid-4,.grid-3,.footer-grid,.form,.kpi{grid-template-columns:1fr}
      .menu,.nav-actions .btn-secondary{display:none}
      .burger{display:inline-grid;place-items:center}
      .mobile-menu{display:none;padding:0 0 16px}
      .mobile-menu.open{display:grid;gap:8px}
      .mobile-menu a{padding:12px 14px;background:#fff;border:1px solid var(--line);border-radius:14px}
    }