:root{
      --bg:#fffdf5;
      --panel:#ffffff;
      --panel-2:#fff8d9;
      --ink:#18202b;
      --muted:#5e6875;
      --line:#eadf9e;
      --brand:#ffcc00;
      --brand-2:#ffb300;
      --accent:#1b4dff;
      --shadow:0 18px 40px rgba(61, 48, 0, .10);
      --radius:22px;
      --radius-sm:16px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
      color:var(--ink);
      background:
        radial-gradient(circle at top left, rgba(255,204,0,.18), transparent 28%),
        radial-gradient(circle at top right, rgba(27,77,255,.08), transparent 26%),
        linear-gradient(180deg, #fffef8 0%, #fffdf5 40%, #fffaf0 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--container), calc(100% - 32px)); margin:0 auto}
    .site-header{
      position:sticky; top:0; z-index:50;
      backdrop-filter:saturate(170%) blur(14px);
      background:rgba(255,252,240,.82);
      border-bottom:1px solid rgba(234,223,158,.72);
    }
    .topbar{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}
    .brand strong{display:block;font-size:18px;line-height:1.1}
    .brand span{display:block;font-size:12px;color:var(--muted)}
    .nav{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    .nav a{font-size:14px;color:#34404f;padding:8px 10px;border-radius:999px;transition:.2s}
    .nav a:hover,.nav a.active{background:rgba(255,204,0,.15);color:#111}
    .nav-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:12px;padding:10px 12px;color:#111}
    .hero{
      padding:34px 0 22px;
    }
    .hero-shell{
      position:relative;
      overflow:hidden;
      border:1px solid rgba(234,223,158,.8);
      border-radius:30px;
      background:
        linear-gradient(135deg, rgba(255,225,88,.92), rgba(255,249,218,.94) 42%, rgba(255,255,255,.98) 100%);
      box-shadow:var(--shadow);
      padding:28px;
    }
    .hero-shell::before,.hero-shell::after{
      content:"";
      position:absolute;border-radius:50%;
      background:radial-gradient(circle, rgba(255,255,255,.9), rgba(255,255,255,0) 68%);
      pointer-events:none;
    }
    .hero-shell::before{width:240px;height:240px;right:-60px;top:-70px;opacity:.55}
    .hero-shell::after{width:180px;height:180px;left:-50px;bottom:-60px;opacity:.35}
    .hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:22px;align-items:stretch;position:relative;z-index:1}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:#fff;border:1px solid rgba(24,32,43,.08);font-size:13px;color:#4a5563}
    h1{margin:14px 0 12px;font-size:clamp(30px,5vw,54px);line-height:1.05;letter-spacing:-.03em}
    .lead{margin:0;color:#34404f;font-size:16px;line-height:1.75;max-width:58ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      min-height:46px;padding:0 18px;border-radius:14px;border:1px solid transparent;
      font-weight:700;font-size:14px;transition:.2s ease;cursor:pointer
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#111;box-shadow:0 12px 22px rgba(255,188,0,.3)}
    .btn-secondary{background:#fff;border-color:var(--line);color:#243040}
    .btn:hover{transform:translateY(-2px)}
    .hero-metrics{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .metric{background:rgba(255,255,255,.88);border:1px solid rgba(234,223,158,.8);border-radius:20px;padding:18px;box-shadow:0 10px 24px rgba(45,36,0,.06)}
    .metric b{display:block;font-size:28px;line-height:1;color:#111}
    .metric span{display:block;margin-top:8px;color:var(--muted);font-size:13px;line-height:1.5}
    .section{padding:18px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:16px}
    .section-head h2{margin:0;font-size:28px;line-height:1.15}
    .section-head p{margin:0;color:var(--muted);max-width:66ch}
    .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 rgba(234,223,158,.95);
      border-radius:var(--radius);
      box-shadow:0 10px 30px rgba(59, 49, 0, .06);
      padding:20px;
      transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
    }
    .card:hover{transform:translateY(-3px);box-shadow:0 16px 34px rgba(59,49,0,.09);border-color:#dfcf7a}
    .card h3{margin:0 0 10px;font-size:18px}
    .card p,.card li{color:var(--muted);line-height:1.7}
    .pill-row{display:flex;flex-wrap:wrap;gap:10px}
    .pill{padding:8px 12px;border-radius:999px;background:#fff8cc;border:1px solid #f0df7d;font-size:13px;color:#374151}
    .media-strip{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .media-strip img,.hero-banner img{width:100%;height:auto;border-radius:18px;border:1px solid rgba(234,223,158,.95);box-shadow:var(--shadow)}
    .hero-banner{display:grid;gap:12px}
    .compare-wrap{overflow:auto;border-radius:22px;border:1px solid rgba(234,223,158,.95);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:14px 16px;border-bottom:1px solid #f1e7b2;text-align:left;vertical-align:top}
    th{background:#fff7c7;color:#253041;font-size:14px}
    td{color:#465261}
    .timeline{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
    .step{position:relative;padding-top:6px}
    .step .num{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,var(--brand),#ffe87c);color:#111;font-weight:800;margin-bottom:12px}
    .step:not(:last-child)::after{content:"";position:absolute;top:24px;right:-8px;width:16px;height:2px;background:#eadf9e}
    .review-grid,.article-grid,.faq-grid,.network-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .avatar{width:48px;height:48px;border-radius:14px;background:linear-gradient(135deg,#ffe15d,#fff5a5);display:grid;place-items:center;font-weight:800;color:#1a1a1a}
    .review-head{display:flex;align-items:center;gap:12px;margin-bottom:10px}
    .stars{color:#f0b400;letter-spacing:2px;font-size:14px}
    .article{display:flex;flex-direction:column;gap:12px}
    .article small{color:#8a6d00;font-weight:700}
    .article a{font-weight:700;color:#18202b}
    .faq-item{border:1px solid rgba(234,223,158,.95);border-radius:18px;background:#fff;overflow:hidden}
    .faq-q{
      width:100%;border:0;background:transparent;color:#18202b;
      padding:16px 18px;display:flex;align-items:center;justify-content:space-between;gap:16px;
      font-size:15px;font-weight:700;cursor:pointer;text-align:left
    }
    .faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease;padding:0 18px}
    .faq-item.open .faq-a{max-height:220px;padding-bottom:16px}
    .faq-a p{margin:0;color:var(--muted);line-height:1.75}
    .form{
      display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px
    }
    .field{display:flex;flex-direction:column;gap:8px}
    .field.full{grid-column:1/-1}
    label{font-size:14px;font-weight:700;color:#27313f}
    input,select,textarea{
      width:100%;border:1px solid #e7da96;background:#fff;padding:13px 14px;border-radius:14px;
      color:#18202b;font:inherit;outline:none;transition:border-color .2s, box-shadow .2s
    }
    textarea{min-height:120px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:#d6b900;box-shadow:0 0 0 4px rgba(255,204,0,.18)}
    .submit-row{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;margin-top:4px}
    .muted{color:var(--muted)}
    .footer{
      margin-top:18px;padding:26px 0 30px;border-top:1px solid rgba(234,223,158,.9);
      background:#fff9de;color:#243040
    }
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:16px;align-items:start}
    .footer a{color:#253041}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag-cloud a{padding:8px 12px;border-radius:999px;background:#fff;border:1px solid #eadf9e;font-size:13px}
    .fixed-contact{
      position:fixed;right:16px;bottom:16px;z-index:60;
      display:flex;flex-direction:column;gap:10px
    }
    .fixed-contact a,.backtop{
      width:52px;height:52px;border-radius:16px;border:1px solid rgba(234,223,158,.95);
      display:grid;place-items:center;background:#fff;box-shadow:0 12px 30px rgba(54,43,0,.12);color:#18202b;font-weight:800
    }
    .backtop{cursor:pointer}
    .floating-kefu{
      position:fixed;left:16px;bottom:16px;z-index:60;
      width:64px;height:64px;border-radius:18px;background:linear-gradient(135deg,var(--brand),#fff08c);
      border:1px solid rgba(0,0,0,.06);display:grid;place-items:center;box-shadow:0 18px 30px rgba(63,49,0,.18)
    }
    .floating-kefu img{width:38px;height:38px;object-fit:cover;border-radius:12px}
    .logo-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
    .kpi-strip{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px}
    .kpi{padding:16px;border-radius:18px;background:#fff;border:1px solid #efe1a8}
    .kpi b{display:block;font-size:18px}
    .kpi span{display:block;margin-top:6px;color:var(--muted);font-size:13px;line-height:1.45}
    .note-box{background:linear-gradient(180deg,#fffef7,#fff8d9);border:1px solid #eadf9e;border-radius:22px;padding:20px}
    .two-col{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .list{margin:0;padding-left:18px}
    .service-badges{display:flex;flex-wrap:wrap;gap:10px}
    .service-badges span{padding:8px 12px;border-radius:12px;background:#fff;border:1px solid #eadf9e;color:#334155;font-size:13px}
    .mobile-only{display:none}
    @media (max-width: 980px){
      .hero-grid,.grid-3,.grid-4,.timeline,.review-grid,.article-grid,.faq-grid,.network-grid,.footer-grid,.two-col,.kpi-strip,.media-strip{grid-template-columns:1fr 1fr}
      .hero-grid{grid-template-columns:1fr}
      .kpi-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
      .step:not(:last-child)::after{display:none}
    }
    @media (max-width: 720px){
      .container{width:min(var(--container), calc(100% - 24px))}
      .nav-toggle{display:inline-flex}
      .nav{display:none;position:absolute;left:16px;right:16px;top:68px;background:#fff;border:1px solid #eadf9e;border-radius:18px;padding:10px;box-shadow:var(--shadow)}
      .nav.open{display:flex;flex-direction:column;align-items:stretch}
      .nav a{padding:12px 14px}
      .topbar{position:relative}
      .section-head{flex-direction:column;align-items:flex-start}
      .form,.hero-metrics,.hero-grid,.grid-3,.grid-4,.timeline,.review-grid,.article-grid,.faq-grid,.network-grid,.footer-grid,.two-col,.kpi-strip,.media-strip{grid-template-columns:1fr}
      .hero-shell{padding:20px}
      .mobile-only{display:inline-flex}
      .fixed-contact{right:10px;bottom:10px}
      .floating-kefu{left:10px;bottom:10px}
    }
    .reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease, transform .6s ease}
    .reveal.show{opacity:1;transform:none}