:root{
      --bg:#f7f9fc;
      --bg2:#eef6ff;
      --card:#ffffff;
      --text:#163042;
      --muted:#5c7283;
      --line:#dbe7f0;
      --brand:#1d6fff;
      --brand2:#00b8d9;
      --accent:#ffb84d;
      --shadow:0 18px 50px rgba(21,59,104,.10);
      --shadow2:0 12px 30px rgba(29,111,255,.16);
      --radius:22px;
      --radius2:16px;
      --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(--text);
      background:
        radial-gradient(circle at top left, rgba(0,184,217,.10), transparent 26%),
        radial-gradient(circle at top right, rgba(29,111,255,.10), transparent 24%),
        linear-gradient(180deg, #ffffff 0%, var(--bg) 100%);
      line-height:1.7;
    }
    img{display:block;max-width:100%;height:auto}
    a{color:inherit;text-decoration:none}
    .container{width:min(100% - 32px, var(--container)); margin:0 auto}
    .site-header{
      position:sticky; top:0; z-index:50;
      backdrop-filter:saturate(150%) blur(14px);
      background:rgba(247,249,252,.86);
      border-bottom:1px solid rgba(219,231,240,.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 .ai-page-logo{width:44px;height:44px;object-fit:contain;border-radius:12px;background:#fff;border:1px solid var(--line);padding:6px;box-shadow:0 8px 18px rgba(0,0,0,.05)}
    .brand h2{margin:0;font-size:18px;line-height:1.2}
    .brand p{margin:2px 0 0;color:var(--muted);font-size:12px}
    .menu-toggle{display:none;border:1px solid var(--line);background:#fff;color:var(--text);border-radius:12px;padding:10px 12px;font-size:14px}
    .nav-links{display:flex;align-items:center;gap:16px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:14px;color:var(--muted);padding:8px 10px;border-radius:999px;transition:.2s}
    .nav-links a:hover{background:#edf5ff;color:var(--brand)}
    .hero{
      padding:56px 0 28px;
    }
    .hero-grid{
      display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:stretch;
    }
    .hero-main,.hero-side,.section-card,.panel,.testimonial,.faq-item,.article-card,.case-card,.price-card,.step-card,.service-card,.metric-card,.quote-card,.compare-card,.contact-card,.agent-card,.timeline-card{
      background:rgba(255,255,255,.92);
      border:1px solid rgba(219,231,240,.9);
      border-radius:var(--radius);
      box-shadow:var(--shadow);
    }
    .hero-main{padding:34px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:linear-gradient(90deg, rgba(29,111,255,.10), rgba(0,184,217,.10));color:var(--brand);font-weight:700;font-size:13px}
    h1{margin:16px 0 14px;font-size:clamp(30px, 5vw, 54px);line-height:1.08;letter-spacing:-.02em}
    .lead{margin:0;color:var(--muted);font-size:16px;max-width:62ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      padding:13px 18px;border-radius:14px;border:1px solid transparent;
      font-weight:700;font-size:15px;transition:.22s ease;cursor:pointer;
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),#4b8dff);color:#fff;box-shadow:var(--shadow2)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 30px rgba(29,111,255,.24)}
    .btn-secondary{background:#fff;border-color:var(--line);color:var(--text)}
    .btn-secondary:hover{transform:translateY(-2px);border-color:#b8d0ff}
    .hero-points{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:28px}
    .mini{
      padding:16px;border-radius:18px;background:linear-gradient(180deg,#fff,#f8fbff);border:1px solid var(--line)
    }
    .mini strong{display:block;font-size:18px}
    .mini span{color:var(--muted);font-size:13px}
    .hero-side{padding:24px;background:
      linear-gradient(180deg, rgba(29,111,255,.08), rgba(255,255,255,.95)),
      radial-gradient(circle at top right, rgba(0,184,217,.15), transparent 38%);
    }
    .side-chip{display:flex;flex-wrap:wrap;gap:10px}
    .tag,.pill{
      display:inline-flex;align-items:center;gap:6px;
      padding:8px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;color:var(--text)
    }
    .side-box{margin-top:16px;padding:18px;border-radius:18px;background:#fff;border:1px solid var(--line)}
    .side-box h3{margin:0 0 8px;font-size:18px}
    .side-box ul{margin:0;padding-left:18px;color:var(--muted)}
    .side-box li{margin:8px 0}
    .metrics{padding:18px 0 4px}
    .grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
    .metric-card{padding:20px}
    .metric-card .num{font-size:28px;font-weight:800;line-height:1;color:var(--brand)}
    .metric-card .label{margin-top:8px;font-size:14px;font-weight:700}
    .metric-card .desc{margin-top:6px;color:var(--muted);font-size:13px}
    section{padding:26px 0}
    .section-card{padding:26px}
    .section-head{display:flex;justify-content:space-between;gap:16px;align-items:flex-end;margin-bottom:18px}
    .section-head h2{margin:0;font-size:28px;line-height:1.2}
    .section-head p{margin:0;color:var(--muted);max-width:68ch}
    .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .service-card,.case-card,.testimonial,.faq-item,.article-card,.compare-card,.contact-card,.agent-card,.price-card,.step-card,.timeline-card{padding:20px}
    .service-card h3,.case-card h3,.testimonial h3,.article-card h3,.price-card h3,.step-card h3,.timeline-card h3{margin:0 0 10px;font-size:18px}
    .service-card p,.case-card p,.testimonial p,.article-card p,.price-card p,.step-card p,.timeline-card p{margin:0;color:var(--muted)}
    .icon{
      width:44px;height:44px;border-radius:14px;display:grid;place-items:center;
      background:linear-gradient(135deg, rgba(29,111,255,.12), rgba(0,184,217,.12));color:var(--brand);font-weight:800;margin-bottom:14px
    }
    .process{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
    .step-card .step-no{font-weight:800;color:var(--brand);font-size:13px;margin-bottom:10px}
    .table-wrap{overflow:auto;border:1px solid var(--line);border-radius:18px;background:#fff}
    table{border-collapse:collapse;width:100%;min-width:760px}
    th,td{padding:14px 16px;border-bottom:1px solid var(--line);text-align:left;font-size:14px;vertical-align:top}
    th{background:#f4f8ff;color:#17354a}
    tr:last-child td{border-bottom:none}
    .highlight{font-weight:800;color:var(--brand)}
    .chips{display:flex;flex-wrap:wrap;gap:10px}
    .price-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .price-card .price{font-size:32px;font-weight:900;color:var(--text);margin:8px 0}
    .quote{margin-top:14px;padding:14px 16px;border-radius:16px;background:#f6fbff;border:1px dashed #b9d5ff;color:#2a4f70;font-size:14px}
    .timeline{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
    .testimonials,.faq-grid,.articles,.cases{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .testimonial .role{margin-top:12px;color:var(--brand);font-size:13px;font-weight:700}
    details{border-radius:16px}
    summary{list-style:none;cursor:pointer;font-weight:700}
    summary::-webkit-details-marker{display:none}
    .faq-item p{margin-top:10px}
    .tags-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tags-cloud .tag{background:linear-gradient(180deg,#fff,#f7fbff)}
    .contact-grid{display:grid;grid-template-columns:1fr .9fr;gap:16px}
    .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}
    input,select,textarea{
      width:100%;border:1px solid var(--line);border-radius:14px;background:#fff;color:var(--text);
      padding:12px 14px;font:inherit;outline:none;transition:.2s
    }
    input:focus,select:focus,textarea:focus{border-color:#8fb8ff;box-shadow:0 0 0 4px rgba(29,111,255,.08)}
    textarea{min-height:120px;resize:vertical}
    .contact-card .contact-list{display:grid;gap:10px;margin:0;padding:0;list-style:none}
    .contact-card .contact-list li{padding:12px 14px;border:1px solid var(--line);border-radius:14px;background:#fff}
    .floating{
      position:fixed;right:16px;bottom:16px;z-index:60;display:flex;flex-direction:column;gap:10px
    }
    .floating a,.floating button{
      display:inline-flex;align-items:center;justify-content:center;padding:12px 14px;border-radius:14px;border:none;
      background:var(--brand);color:#fff;box-shadow:0 14px 26px rgba(29,111,255,.22);font-weight:700;cursor:pointer
    }
    .floating a.secondary{background:#fff;color:var(--text);border:1px solid var(--line)}
    footer{
      margin-top:10px;
      background:#0f2340;color:#dce8f4;
      border-top:1px solid rgba(255,255,255,.08)
    }
    footer a{color:#fff}
    .footer-inner{padding:30px 0}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr 1fr;gap:18px;align-items:start}
    .footer-grid p,.footer-grid li{color:#c7d7e6}
    .footer-grid ul{margin:0;padding-left:18px}
    .footer-bottom{padding:14px 0 22px;border-top:1px solid rgba(255,255,255,.08);margin-top:18px;color:#b7c9da;font-size:13px}
    .mobile-only{display:none}
    .reveal{opacity:0;transform:translateY(14px);transition:opacity .6s ease, transform .6s ease}
    .reveal.in{opacity:1;transform:none}
    .home-link{font-weight:700;color:var(--brand)}
    .image-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .image-row img{border-radius:18px;border:1px solid var(--line);box-shadow:var(--shadow)}
    @media (max-width: 980px){
      .hero-grid,.contact-grid,.footer-grid,.grid-4,.grid-3,.process,.timeline,.price-grid,.testimonials,.faq-grid,.articles,.cases{grid-template-columns:1fr 1fr}
      .hero-main,.hero-side,.section-card{padding:22px}
      .footer-grid{grid-template-columns:1fr}
      .hero{padding-top:34px}
    }
    @media (max-width: 720px){
      .menu-toggle{display:inline-flex}
      .nav{position:relative}
      .nav-links{
        display:none; position:absolute; left:0; right:0; top:62px; padding:14px; border-radius:18px;
        background:rgba(255,255,255,.98); border:1px solid var(--line); box-shadow:var(--shadow); flex-direction:column; align-items:flex-start
      }
      .nav-links.open{display:flex}
      .hero-grid,.contact-grid,.grid-4,.grid-3,.process,.timeline,.price-grid,.testimonials,.faq-grid,.articles,.cases,.image-row,.form{grid-template-columns:1fr}
      .section-head{flex-direction:column;align-items:flex-start}
      h1{font-size:34px}
      .hero-points{grid-template-columns:1fr}
      .floating{right:12px;bottom:12px}
      .mobile-only{display:inline-flex}
    }