:root{
      --bg:#f6f8fc;
      --panel:#ffffff;
      --panel-2:#f1f6ff;
      --text:#1f2937;
      --muted:#5b6475;
      --line:#dbe4f0;
      --brand:#2563eb;
      --brand2:#7c3aed;
      --accent:#14b8a6;
      --warm:#f97316;
      --shadow:0 18px 50px rgba(37,99,235,.12);
      --radius:22px;
      --container: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;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(37,99,235,.12), transparent 28%),
        radial-gradient(circle at top right, rgba(124,58,237,.10), transparent 22%),
        linear-gradient(180deg,#f9fbff 0%, #f6f8fc 28%, #f6f8fc 100%);
    }
    a{color:var(--brand);text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(100% - 32px,var(--container));margin:0 auto}
    .topbar{
      position:sticky;top:0;z-index:50;
      backdrop-filter:blur(14px);
      background:rgba(246,248,252,.82);
      border-bottom:1px solid rgba(219,228,240,.9);
    }
    .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;border:1px solid var(--line);padding:4px}
    .brand strong{display:block;font-size:18px;line-height:1.1}
    .brand span{display:block;font-size:12px;color:var(--muted);margin-top:3px}
    .nav-links{display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:flex-end}
    .nav-links a{font-size:14px;color:var(--text);padding:8px 10px;border-radius:999px}
    .nav-links a:hover{background:#eaf1ff;color:#1747b5}
    .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;font-size:14px;cursor:pointer;
      transition:.22s ease;white-space:nowrap
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:0 12px 26px rgba(37,99,235,.22)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(37,99,235,.28)}
    .btn-light{background:#fff;border-color:var(--line);color:var(--text)}
    .btn-light:hover{transform:translateY(-2px);border-color:#b9c9e6}
    .menu-btn{display:none;background:#fff;border:1px solid var(--line);width:44px;height:44px;border-radius:14px}
    .menu-btn span{display:block;width:18px;height:2px;background:#334155;margin:4px auto;border-radius:2px}
    .hero{padding:40px 0 24px}
    .hero-grid{display:grid;grid-template-columns:1.18fr .82fr;gap:24px;align-items:stretch}
    .hero-main,.hero-side,.card,.section,.panel{
      background:rgba(255,255,255,.86);
      border:1px solid rgba(219,228,240,.95);
      box-shadow:var(--shadow);
      border-radius:var(--radius);
    }
    .hero-main{padding:34px;position:relative;overflow:hidden}
    .hero-main::before,.hero-main::after{
      content:"";position:absolute;border-radius:999px;filter:blur(2px);pointer-events:none
    }
    .hero-main::before{width:220px;height:220px;right:-90px;top:-70px;background:radial-gradient(circle, rgba(20,184,166,.18), transparent 62%)}
    .hero-main::after{width:260px;height:260px;left:-130px;bottom:-120px;background:radial-gradient(circle, rgba(124,58,237,.15), transparent 64%)}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;background:#eef4ff;border:1px solid #d6e2ff;color:#1d4ed8;padding:8px 12px;border-radius:999px;font-size:13px;font-weight:700}
    h1{margin:18px 0 14px;font-size:clamp(32px,5vw,52px);line-height:1.08;letter-spacing:-.03em}
    .lead{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}
    .point{background:linear-gradient(180deg,#fff, #f7fbff);border:1px solid var(--line);border-radius:18px;padding:14px}
    .point strong{display:block;font-size:18px}
    .point span{display:block;color:var(--muted);font-size:13px;margin-top:4px;line-height:1.5}
    .hero-side{padding:22px;display:grid;gap:14px}
    .stat{
      padding:18px;border-radius:18px;background:linear-gradient(135deg,#eff6ff,#f7f3ff);
      border:1px solid #d8e4ff
    }
    .stat h3{margin:0;font-size:15px}
    .stat p{margin:8px 0 0;color:var(--muted);line-height:1.7;font-size:14px}
    .mini-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .mini{padding:14px;border-radius:16px;background:#fff;border:1px solid var(--line)}
    .mini b{display:block;font-size:18px}
    .mini span{display:block;color:var(--muted);font-size:13px;margin-top:4px}
    .section{margin-top:22px;padding:28px}
    .section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:14px;margin-bottom:18px}
    .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}
    .service-card,.feature-card,.review-card,.case-card,.article-card{
      background:linear-gradient(180deg,#fff, #f8fbff);
      border:1px solid var(--line);border-radius:20px;padding:20px;transition:.22s ease
    }
    .service-card:hover,.feature-card:hover,.review-card:hover,.case-card:hover,.article-card:hover{transform:translateY(-4px);box-shadow:0 14px 34px rgba(37,99,235,.11)}
    .icon{
      width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
      background:linear-gradient(135deg,#dbeafe,#ede9fe);color:#1d4ed8;font-weight:800;margin-bottom:14px
    }
    .service-card h3,.feature-card h3,.case-card h3,.article-card h3{margin:0 0 8px;font-size:18px}
    .service-card p,.feature-card p,.case-card p,.article-card p,.review-card p{margin:0;color:var(--muted);line-height:1.75;font-size:14px}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:9px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#344155;font-size:13px}
    .process{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .step{position:relative;padding:20px 18px 18px;background:#fff;border:1px solid var(--line);border-radius:20px}
    .step-num{display:inline-flex;width:34px;height:34px;border-radius:50%;align-items:center;justify-content:center;color:#fff;font-weight:800;background:linear-gradient(135deg,var(--brand),var(--brand2))}
    .step h3{margin:14px 0 8px;font-size:18px}
    .compare-wrap{overflow-x:auto;border-radius:20px;border:1px solid var(--line);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:16px 14px;border-bottom:1px solid #edf2f7;text-align:left;vertical-align:top}
    th{background:#f7faff;font-size:14px}
    td{font-size:14px;color:#334155;line-height:1.65}
    .badge{display:inline-flex;align-items:center;padding:5px 10px;border-radius:999px;background:#e8fff8;color:#0f766e;font-size:12px;font-weight:700}
    .price-grid,.timeline{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .price-card,.time-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:20px}
    .price-card b{display:block;font-size:26px;margin:10px 0;color:#0f172a}
    .faq{display:grid;gap:12px}
    details{background:#fff;border:1px solid var(--line);border-radius:18px;padding:0 18px;overflow:hidden}
    summary{cursor:pointer;list-style:none;padding:18px 0;font-weight:700}
    summary::-webkit-details-marker{display:none}
    details p{margin:0 0 18px;color:var(--muted);line-height:1.8}
    .review-grid,.case-grid,.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .review-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px}
    .stars{color:#f59e0b;font-size:14px;letter-spacing:1px}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .field{display:grid;gap:8px}
    label{font-size:14px;font-weight:700;color:#334155}
    input,select,textarea{
      width:100%;border:1px solid #cfd9e8;background:#fff;border-radius:14px;padding:13px 14px;
      font:inherit;color:var(--text);outline:none;transition:.2s ease
    }
    input:focus,select:focus,textarea:focus{border-color:#7aa2ff;box-shadow:0 0 0 4px rgba(37,99,235,.10)}
    textarea{min-height:130px;resize:vertical}
    .full{grid-column:1/-1}
    .footer{
      margin-top:22px;padding:28px 0 24px;background:#edf3fb;border-top:1px solid #dbe4f0;color:#223047
    }
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr .9fr;gap:18px;align-items:start}
    .footer h3{margin:0 0 12px;font-size:18px}
    .footer p,.footer a,.footer li{color:#334155;font-size:14px;line-height:1.8}
    .footer ul{margin:0;padding:0;list-style:none}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px}
    .floating{
      position:fixed;right:18px;bottom:18px;z-index:60;display:grid;gap:10px
    }
    .float-btn{
      width:52px;height:52px;border-radius:16px;border:1px solid var(--line);background:#fff;display:grid;place-items:center;
      box-shadow:0 14px 30px rgba(15,23,42,.12);color:#1d4ed8;font-weight:800
    }
    .kefu{
      position:fixed;left:18px;bottom:18px;z-index:60;width:82px;text-align:center
    }
    .kefu img{width:82px;height:82px;object-fit:cover;border-radius:18px;border:1px solid var(--line);background:#fff}
    .kefu span{display:block;margin-top:6px;font-size:12px;color:#475569}
    .mobile-menu{display:none}
    .scroll-reveal{opacity:0;transform:translateY(16px);transition:.6s ease}
    .scroll-reveal.in{opacity:1;transform:translateY(0)}
    @media (max-width: 1080px){
      .hero-grid,.grid-4,.process,.review-grid,.case-grid,.article-grid,.footer-grid,.price-grid,.timeline{grid-template-columns:1fr 1fr}
      .hero-points{grid-template-columns:1fr}
    }
    @media (max-width: 760px){
      .nav-links,.nav-cta{display:none}
      .menu-btn{display:inline-grid;place-items:center}
      .mobile-menu{display:none;padding:0 0 14px}
      .mobile-menu.open{display:block}
      .mobile-menu .stack{display:grid;gap:10px;padding:10px 0 0}
      .mobile-menu a{padding:12px 14px;background:#fff;border:1px solid var(--line);border-radius:14px;color:var(--text)}
      .hero{padding-top:22px}
      .hero-main,.section{padding:22px}
      .hero-grid,.grid-4,.process,.review-grid,.case-grid,.article-grid,.footer-grid,.price-grid,.timeline,.form-grid{grid-template-columns:1fr}
      .section-head{flex-direction:column;align-items:flex-start}
      .kefu{left:12px;bottom:12px;width:72px}
      .kefu img{width:72px;height:72px}
      .floating{right:12px;bottom:12px}
      table{min-width:680px}
    }