:root{
      --bg:#f6f8fc;
      --bg2:#eef4ff;
      --card:#ffffff;
      --text:#162033;
      --muted:#5f6b7a;
      --line:#dfe7f3;
      --primary:#2c6cff;
      --primary2:#23c8a8;
      --accent:#ffb84d;
      --shadow:0 18px 50px rgba(20,38,78,.08);
      --radius:22px;
      --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;color:var(--text);background:linear-gradient(180deg,#fbfcff 0%,var(--bg) 48%,#f8fbff 100%);}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%;height:auto}
    .container{width:min(var(--container),calc(100% - 32px));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:50;background:rgba(250,252,255,.86);backdrop-filter:blur(14px);border-bottom:1px solid rgba(223,231,243,.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;border:1px solid var(--line);box-shadow:0 8px 18px rgba(44,108,255,.08)}
    .brand strong{display:block;font-size:18px;line-height:1.1}
    .brand span{display:block;font-size:12px;color:var(--muted);margin-top:4px}
    .nav-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:14px;color:var(--text);padding:8px 10px;border-radius:999px;transition:.2s}
    .nav-links a:hover,.nav-links a:focus{background:#edf4ff;color:var(--primary)}
    .nav-cta{display:flex;align-items:center;gap:10px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 18px;border-radius:999px;border:1px solid transparent;font-weight:700;cursor:pointer;transition:.25s ease;white-space:nowrap}
    .btn-primary{background:linear-gradient(135deg,var(--primary),#5b86ff);color:#fff;box-shadow:0 14px 30px rgba(44,108,255,.24)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 20px 36px rgba(44,108,255,.28)}
    .btn-ghost{background:#fff;border-color:var(--line);color:var(--text)}
    .btn-ghost:hover{border-color:#b9c9e8;transform:translateY(-2px)}
    .menu-btn{display:none}
    .hero{position:relative;overflow:hidden;padding:34px 0 24px;background:
      radial-gradient(circle at 10% 10%,rgba(44,108,255,.12),transparent 24%),
      radial-gradient(circle at 92% 18%,rgba(35,200,168,.12),transparent 18%),
      linear-gradient(180deg,#fdfefe 0%,#f5f8ff 100%)}
    .hero::before,.hero::after{content:"";position:absolute;border-radius:50%;filter:blur(2px);pointer-events:none}
    .hero::before{width:280px;height:280px;background:rgba(44,108,255,.08);right:-80px;top:-70px}
    .hero::after{width:180px;height:180px;background:rgba(255,184,77,.13);left:-50px;bottom:-60px}
    .hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:center}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:#eef5ff;color:#234fb2;font-size:13px;font-weight:700;border:1px solid #dbe7ff}
    h1{font-size:clamp(32px,5vw,54px);line-height:1.06;margin:16px 0 14px;letter-spacing:-.03em}
    .lead{font-size:17px;line-height:1.8;color:var(--muted);max-width:58ch}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:24px 0 18px}
    .hero-points{display:flex;flex-wrap:wrap;gap:10px}
    .chip{padding:10px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);box-shadow:0 10px 24px rgba(20,38,78,.04);font-size:13px;color:#31415c}
    .hero-panel{background:linear-gradient(180deg,#ffffff 0%,#f8fbff 100%);border:1px solid var(--line);border-radius:28px;padding:22px;box-shadow:var(--shadow)}
    .hero-stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .stat{padding:16px;border-radius:20px;background:linear-gradient(180deg,#fff 0%,#f4f8ff 100%);border:1px solid #e6eefb}
    .stat b{display:block;font-size:28px;line-height:1;color:#12203a}
    .stat span{display:block;font-size:13px;color:var(--muted);margin-top:8px;line-height:1.5}
    .section{padding:26px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:18px}
    .section-head h2{font-size:28px;line-height:1.2;margin:0}
    .section-head p{margin:0;color:var(--muted);max-width:62ch;line-height:1.7}
    .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(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 10px 28px rgba(19,33,63,.05);padding:20px;transition:.25s ease}
    .card:hover{transform:translateY(-4px);box-shadow:0 18px 40px rgba(19,33,63,.09)}
    .card h3{margin:0 0 10px;font-size:18px}
    .card p,.card li{color:var(--muted);line-height:1.75}
    .badge{display:inline-flex;align-items:center;padding:6px 10px;border-radius:999px;background:#eef9f7;color:#13806a;font-size:12px;font-weight:700;margin-bottom:12px}
    .split{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .step{padding:18px;border-radius:22px;background:linear-gradient(180deg,#fff 0%,#f7fbff 100%);border:1px solid var(--line);position:relative}
    .step .no{width:34px;height:34px;border-radius:12px;background:linear-gradient(135deg,var(--primary),#5f8cff);color:#fff;display:grid;place-items:center;font-weight:800;margin-bottom:12px}
    .table-wrap{overflow:auto;border:1px solid var(--line);border-radius:24px;background:#fff;box-shadow:var(--shadow)}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:16px 18px;text-align:left;border-bottom:1px solid #edf1f7;vertical-align:top}
    th{background:#f7faff;font-size:14px;color:#23314b}
    td{color:var(--muted);line-height:1.7}
    .highlight{color:#0e61ff;font-weight:800}
    details{background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px 18px;box-shadow:0 8px 18px rgba(19,33,63,.04)}
    details+details{margin-top:12px}
    summary{cursor:pointer;font-weight:700;list-style:none}
    summary::-webkit-details-marker{display:none}
    summary::after{content:"＋";float:right;color:var(--primary)}
    details[open] summary::after{content:"－"}
    .reviews,.articles,.cases,.network,.tags,.prices{display:grid;gap:16px}
    .reviews{grid-template-columns:repeat(3,minmax(0,1fr))}
    .review{padding:18px;border-radius:22px;background:linear-gradient(180deg,#fff 0%,#f8fbff 100%);border:1px solid var(--line)}
    .stars{color:#ffb11a;font-size:16px;letter-spacing:2px;margin-bottom:10px}
    .avatar{width:42px;height:42px;border-radius:14px;background:linear-gradient(135deg,#dfeaff,#f0f7ff);display:grid;place-items:center;font-weight:800;color:#2a4d9a;margin-bottom:12px}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag-cloud span{padding:10px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#31415c;font-size:13px}
    .pricing{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .price{padding:22px;border-radius:24px;background:linear-gradient(180deg,#fff 0%,#f6f9ff 100%);border:1px solid var(--line)}
    .price strong{display:block;font-size:30px;margin:8px 0 12px}
    .price ul{margin:0;padding-left:18px}
    .articles a,.cases a{display:block;padding:16px 18px;border-radius:18px;background:#fff;border:1px solid var(--line);box-shadow:0 8px 18px rgba(19,33,63,.04)}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    label{display:block;font-size:14px;font-weight:700;margin:2px 0 8px}
    input,select,textarea{width:100%;border:1px solid #d9e3f1;border-radius:14px;padding:13px 14px;background:#fff;color:var(--text);font:inherit;outline:none;transition:.2s}
    input:focus,select:focus,textarea:focus{border-color:#93b5ff;box-shadow:0 0 0 4px rgba(44,108,255,.09)}
    textarea{min-height:132px;resize:vertical}
    .form-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:14px}
    .contact-box{display:grid;grid-template-columns:1fr 280px;gap:16px;align-items:start}
    .qrcode{padding:16px;border-radius:22px;background:#fff;border:1px solid var(--line);text-align:center}
    .qrcode img{margin:0 auto 10px;width:180px;border-radius:18px}
    .floating{position:fixed;right:18px;bottom:18px;z-index:60;display:flex;flex-direction:column;gap:10px}
    .float-btn{padding:12px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);font-weight:700;color:var(--text)}
    .footer{padding:22px 0 28px;border-top:1px solid var(--line);background:#f8fbff;color:#31415c;margin-top:8px}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr 1fr;gap:16px;align-items:start}
    .small{font-size:13px;color:var(--muted);line-height:1.8}
    .mobile-toggle{display:none}
    .scroll-top{display:none}
    .ai-page-home-link{font-weight:700}
    .page-images{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
    .page-images img{border-radius:20px;border:1px solid var(--line);box-shadow:var(--shadow)}
    .hidden{display:none}
    .fade-up{animation:fadeUp .7s ease both}
    @keyframes fadeUp{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:translateY(0)}}
    @media (max-width: 1024px){
      .hero-grid,.split,.contact-box,.footer-grid{grid-template-columns:1fr}
      .grid-4,.steps,.reviews,.pricing,.grid-3,.page-images{grid-template-columns:repeat(2,minmax(0,1fr))}
      .nav-links{display:none}
      .menu-btn{display:inline-flex}
      .nav.open .nav-links{display:flex;position:absolute;left:16px;right:16px;top:66px;flex-direction:column;align-items:stretch;background:#fff;border:1px solid var(--line);border-radius:18px;padding:12px;box-shadow:var(--shadow)}
      .nav.open .nav-links a{padding:12px 14px}
      .section-head{align-items:flex-start;flex-direction:column}
    }
    @media (max-width: 640px){
      .grid-4,.steps,.reviews,.pricing,.grid-3,.page-images,.hero-stats,.grid-3,.grid-4,.form-grid{grid-template-columns:1fr}
      h1{font-size:30px}
      .lead{font-size:15px}
      .hero{padding-top:22px}
      .nav{position:relative}
      .brand strong{font-size:16px}
      .btn{width:100%}
      .hero-actions,.form-actions{flex-direction:column}
      .floating{right:12px;bottom:12px}
      .scroll-top{display:inline-flex}
    }