:root{
      --bg:#f6f8fc;
      --bg2:#eef4ff;
      --card:#ffffff;
      --text:#162033;
      --muted:#5c6b84;
      --line:#dfe7f3;
      --primary:#2563eb;
      --primary2:#12b981;
      --accent:#f59e0b;
      --shadow:0 18px 50px rgba(31, 51, 97, .10);
      --radius:22px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:Inter, "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(37,99,235,.08), transparent 28%),
        radial-gradient(circle at 85% 10%, rgba(18,185,129,.10), transparent 22%),
        linear-gradient(180deg, #ffffff 0%, var(--bg) 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}
    .topbar{
      position:sticky; top:0; z-index:60;
      backdrop-filter:saturate(1.2) blur(14px);
      background:rgba(255,255,255,.82);
      border-bottom:1px solid rgba(223,231,243,.85);
    }
    .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; border-radius:12px; object-fit:cover; box-shadow:0 10px 24px rgba(37,99,235,.12)}
    .brand-text{min-width:0}
    .brand-text strong{display:block; font-size:18px; letter-spacing:.4px}
    .brand-text span{display:block; font-size:12px; color:var(--muted); margin-top:2px}
    .menu-btn{
      display:none; border:1px solid var(--line); background:#fff; color:var(--text);
      border-radius:14px; padding:10px 12px; font-size:14px;
    }
    .nav-links{display:flex; align-items:center; gap:14px; flex-wrap:wrap; justify-content:flex-end}
    .nav-links a{font-size:14px; color:var(--muted); padding:8px 10px; border-radius:10px; transition:.25s}
    .nav-links a:hover{color:var(--primary); background:#f2f7ff}
    .container-main{padding:18px 0 0}
    .hero{
      position:relative;
      overflow:hidden;
      padding:38px 0 24px;
    }
    .hero-grid{
      display:grid; grid-template-columns:1.18fr .82fr; gap:22px; align-items:stretch;
    }
    .hero-panel{
      background:linear-gradient(135deg, rgba(255,255,255,.96), rgba(240,246,255,.96));
      border:1px solid rgba(223,231,243,.92);
      border-radius:28px;
      box-shadow:var(--shadow);
      padding:34px;
      position:relative;
      overflow:hidden;
    }
    .hero-panel::before,.hero-panel::after{
      content:""; position:absolute; border-radius:999px; pointer-events:none;
      background:linear-gradient(180deg, rgba(37,99,235,.18), rgba(18,185,129,.06));
      filter:blur(10px);
    }
    .hero-panel::before{width:180px;height:180px; right:-48px; top:-30px}
    .hero-panel::after{width:120px;height:120px; left:-34px; bottom:-34px}
    .eyebrow{
      display:inline-flex; align-items:center; gap:8px;
      color:var(--primary); background:#eff6ff; border:1px solid #dbeafe;
      font-size:13px; padding:8px 12px; border-radius:999px;
      position:relative; z-index:1;
    }
    h1{margin:16px 0 14px; font-size:clamp(30px, 4.8vw, 54px); line-height:1.08; letter-spacing:-.8px; position:relative; z-index:1}
    .hero p{margin:0; color:var(--muted); font-size:16px; line-height:1.8; position:relative; z-index:1; max-width:60ch}
    .hero-actions{display:flex; flex-wrap:wrap; gap:12px; margin-top:24px; position:relative; z-index:1}
    .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:.25s ease; cursor:pointer;
    }
    .btn-primary{background:linear-gradient(135deg, var(--primary), #1d4ed8); color:#fff; box-shadow:0 12px 24px rgba(37,99,235,.25)}
    .btn-primary:hover{transform:translateY(-2px); box-shadow:0 16px 28px rgba(37,99,235,.3)}
    .btn-ghost{background:#fff; border-color:var(--line); color:var(--text)}
    .btn-ghost:hover{border-color:#c6d3ea; transform:translateY(-2px)}
    .hero-stats{
      display:grid; grid-template-columns:repeat(2, minmax(0,1fr)); gap:14px;
    }
    .mini-card, .card, .testimonial, .faq-item, .promo, .contact-card, .article, .service-box, .compare, .step, .tag-cloud, .network, .table-wrap{
      background:var(--card); border:1px solid rgba(223,231,243,.95); border-radius:var(--radius); box-shadow:0 8px 28px rgba(31,51,97,.06);
    }
    .mini-card{padding:18px}
    .mini-card b{display:block; font-size:22px; margin-bottom:6px}
    .mini-card span{color:var(--muted); font-size:13px; line-height:1.6}
    .section{padding:20px 0}
    .section-head{display:flex; justify-content:space-between; align-items:end; gap:16px; margin-bottom:16px}
    .section-head h2{margin:0; font-size:clamp(22px, 3vw, 32px)}
    .section-head p{margin:0; color:var(--muted); max-width:64ch; line-height:1.7; font-size:14px}
    .grid-4{display:grid; grid-template-columns:repeat(4, minmax(0,1fr)); gap:16px}
    .grid-3{display:grid; grid-template-columns:repeat(3, minmax(0,1fr)); gap:16px}
    .grid-2{display:grid; grid-template-columns:repeat(2, minmax(0,1fr)); gap:16px}
    .card{padding:20px}
    .card h3,.service-box h3,.promo h3,.contact-card h3,.article h3{margin:0 0 10px; font-size:18px}
    .card p,.service-box p,.promo p,.contact-card p,.article p{margin:0; color:var(--muted); line-height:1.75; font-size:14px}
    .badge{display:inline-flex; align-items:center; gap:6px; padding:7px 11px; background:#f8fbff; border:1px solid #e6eefb; border-radius:999px; color:#35507e; font-size:12px; margin-bottom:12px}
    .service-box{padding:20px}
    .service-box ul{padding:0; margin:14px 0 0; list-style:none; display:grid; gap:10px}
    .service-box li{position:relative; padding-left:18px; color:var(--text); font-size:14px; line-height:1.6}
    .service-box li::before{content:""; position:absolute; left:0; top:.7em; width:8px; height:8px; border-radius:50%; background:linear-gradient(135deg,var(--primary),var(--primary2))}
    .timeline{display:grid; gap:12px}
    .step{padding:18px; display:flex; gap:14px}
    .step-num{
      flex:0 0 40px; height:40px; border-radius:12px; display:grid; place-items:center; font-weight:800;
      background:linear-gradient(135deg, rgba(37,99,235,.10), rgba(18,185,129,.10)); color:var(--primary);
    }
    .step h3{margin:0 0 6px; font-size:16px}
    .step p{margin:0; color:var(--muted); line-height:1.7; font-size:14px}
    .table-wrap{overflow:auto}
    table{width:100%; border-collapse:collapse; min-width:760px}
    th,td{padding:14px 14px; border-bottom:1px solid var(--line); text-align:left; vertical-align:top; font-size:14px; line-height:1.7}
    th{background:#f8fbff; color:#20314f}
    .highlight{color:#0f766e; font-weight:700}
    .compare{padding:18px}
    .rating{
      display:flex; flex-wrap:wrap; gap:10px; margin:14px 0 0;
    }
    .rating span{padding:8px 12px; border-radius:999px; background:#f7fbff; border:1px solid #e4edf9; font-size:13px}
    .tag-cloud{padding:18px}
    .tags{display:flex; flex-wrap:wrap; gap:10px}
    .tag{padding:9px 12px; border-radius:999px; background:#f5f8ff; border:1px solid #e2e9f7; color:#35507e; font-size:13px}
    .network{padding:18px}
    .network ul{margin:0; padding:0; list-style:none; display:grid; gap:10px}
    .network li{display:flex; justify-content:space-between; gap:14px; color:var(--text); font-size:14px; padding:10px 0; border-bottom:1px dashed #e5ebf5}
    .network li:last-child{border-bottom:none}
    .reviews{display:grid; grid-template-columns:repeat(3, minmax(0,1fr)); gap:16px}
    .testimonial{padding:18px}
    .testimonial .who{display:flex; justify-content:space-between; gap:12px; align-items:center; margin-bottom:10px}
    .testimonial strong{font-size:15px}
    .stars{color:#f59e0b; letter-spacing:1px}
    .faq-list{display:grid; gap:12px}
    .faq-item{overflow:hidden}
    .faq-q{
      width:100%; border:0; background:#fff; text-align:left; padding:18px 18px; font:inherit;
      display:flex; justify-content:space-between; gap:16px; align-items:center; cursor:pointer; color:var(--text);
    }
    .faq-q span{font-weight:700}
    .faq-a{max-height:0; overflow:hidden; transition:max-height .3s ease; padding:0 18px}
    .faq-item.open .faq-a{max-height:220px; padding-bottom:18px}
    .faq-a p{margin:0; color:var(--muted); line-height:1.75; font-size:14px}
    .articles{display:grid; grid-template-columns:repeat(3, minmax(0,1fr)); gap:16px}
    .article{padding:18px}
    .article .meta{font-size:12px; color:#6a7a96; margin-bottom:10px}
    .contact-grid{display:grid; grid-template-columns:1fr .9fr; gap:16px}
    .contact-card{padding:22px}
    form{display:grid; gap:12px}
    .field{display:grid; gap:7px}
    label{font-size:13px; color:#31415f}
    input,select,textarea{
      width:100%; border:1px solid #dbe4f1; background:#fff; color:var(--text);
      border-radius:14px; padding:12px 14px; font:inherit; outline:none; transition:.2s;
    }
    input:focus,select:focus,textarea:focus{border-color:#90b5ff; box-shadow:0 0 0 4px rgba(37,99,235,.08)}
    textarea{min-height:118px; resize:vertical}
    .footer{
      margin-top:16px; padding:24px 0 30px; border-top:1px solid rgba(223,231,243,.95); background:rgba(255,255,255,.68)
    }
    .footer-grid{display:grid; grid-template-columns:1.1fr .9fr; gap:18px; align-items:start}
    .footer a{color:#2957c7}
    .footer small,.footer p{color:var(--muted); line-height:1.7}
    .quick-contact{display:grid; grid-template-columns:repeat(2, minmax(0,1fr)); gap:12px}
    .qbox{padding:14px; background:#f9fbff; border:1px solid #e4edf9; border-radius:16px}
    .qbox b{display:block; margin-bottom:6px}
    .floating{
      position:fixed; right:16px; bottom:16px; z-index:80; display:grid; gap:10px;
    }
    .float-btn{
      width:52px; height:52px; border-radius:16px; display:grid; place-items:center; border:1px solid rgba(223,231,243,.9);
      background:#fff; box-shadow:var(--shadow); color:var(--primary); font-size:20px;
    }
    .float-panel{
      position:fixed; right:16px; bottom:84px; width:min(320px, calc(100vw - 32px));
      background:#fff; border:1px solid var(--line); border-radius:22px; box-shadow:var(--shadow);
      padding:16px; display:none; z-index:79;
    }
    .float-panel.open{display:block}
    .float-panel .ai-page-image{border-radius:16px; margin-top:10px}
    .scroll-top{cursor:pointer}
    .muted{color:var(--muted)}
    .center{text-align:center}
    .home-link{display:inline-flex; align-items:center; gap:8px; color:var(--primary); font-weight:700}
    .home-link:hover{text-decoration:underline}
    .hero-visual{
      display:grid; gap:16px;
    }
    .promo{padding:18px}
    .promo .list{display:grid; gap:10px; margin-top:12px}
    .promo .list div{display:flex; gap:10px; align-items:flex-start; color:var(--text); font-size:14px; line-height:1.6}
    .dot{width:9px; height:9px; margin-top:.48em; border-radius:50%; background:linear-gradient(135deg,var(--primary),var(--primary2)); flex:0 0 auto}
    .hero-links{display:flex; flex-wrap:wrap; gap:10px; margin-top:16px}
    .hero-links a{padding:8px 12px; border:1px solid #dbe4f2; border-radius:999px; background:#fff; color:#395079; font-size:13px}
    .ai-page-home-link{display:inline-flex; align-items:center; gap:6px}
    .anchor-pad{scroll-margin-top:92px}
    .gallery{
      display:grid; grid-template-columns:1fr 1fr; gap:12px;
    }
    .gallery .ai-page-image{border-radius:18px; border:1px solid var(--line)}
    .soft{
      background:linear-gradient(180deg, rgba(37,99,235,.05), rgba(18,185,129,.03));
      border:1px solid #e2ebf8;
    }
    .mobile-only{display:none}
    @media (max-width: 960px){
      .hero-grid,.contact-grid,.footer-grid,.grid-4,.grid-3,.grid-2,.reviews,.articles,.hero-stats{grid-template-columns:1fr}
      .nav-links{display:none}
      .menu-btn{display:inline-flex}
      .nav-links.open{
        display:flex; position:absolute; left:0; right:0; top:72px; flex-direction:column; align-items:stretch;
        background:rgba(255,255,255,.98); padding:14px 16px 18px; border-bottom:1px solid var(--line);
        box-shadow:0 18px 30px rgba(31,51,97,.08);
      }
      .nav-links.open a{padding:12px 10px; background:#f8fbff}
      .hero-panel{padding:24px}
      .gallery{grid-template-columns:1fr}
      .mobile-only{display:block}
    }
    @media (max-width: 640px){
      .container{width:min(var(--container), calc(100% - 20px))}
      .hero{padding-top:22px}
      .hero-panel{border-radius:22px}
      .section-head{flex-direction:column; align-items:flex-start}
      .btn{width:100%}
      .hero-actions{display:grid; grid-template-columns:1fr}
      .quick-contact{grid-template-columns:1fr}
    }
    .reveal{opacity:0; transform:translateY(16px); transition:.55s ease}
    .reveal.in{opacity:1; transform:none}