:root{
      --bg:#f7f8fc;
      --surface:#ffffff;
      --surface-2:#f3f6ff;
      --text:#162033;
      --muted:#5d6a80;
      --line:#dde4f3;
      --brand:#2f6bff;
      --brand-2:#7c4dff;
      --accent:#12c2e9;
      --gold:#f5b942;
      --shadow:0 18px 45px rgba(24,43,103,.10);
      --shadow-soft:0 10px 24px rgba(24,43,103,.08);
      --radius:22px;
      --radius-sm:14px;
      --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 12% 10%, rgba(47,107,255,.10), transparent 28%),
        radial-gradient(circle at 85% 0%, rgba(124,77,255,.12), transparent 24%),
        linear-gradient(180deg, #fbfcff 0%, #f7f8fc 60%, #f4f7fd 100%);
    }
    a{color:var(--brand);text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--container), calc(100% - 32px)); margin:0 auto}
    header{
      position:sticky; top:0; z-index:40;
      backdrop-filter:blur(14px);
      background:rgba(247,248,252,.78);
      border-bottom:1px solid rgba(221,228,243,.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}
    .ai-page-logo{width:38px;height:38px; object-fit:contain; border-radius:10px; background:#fff; box-shadow:var(--shadow-soft)}
    .brand strong{display:block; font-size:18px; line-height:1.1}
    .brand span{display:block; font-size:12px; color:var(--muted); margin-top:2px}
    .menu{display:flex; align-items:center; gap:18px; flex-wrap:wrap; justify-content:flex-end}
    .menu a{font-size:14px; color:var(--text); padding:8px 10px; border-radius:999px}
    .menu a:hover{background:#eef3ff}
    .nav-actions{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; transition:.25s ease;
      cursor:pointer;
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2)); color:#fff; box-shadow:0 10px 24px rgba(47,107,255,.24)}
    .btn-primary:hover{transform:translateY(-2px); box-shadow:0 16px 34px rgba(47,107,255,.28)}
    .btn-ghost{background:#fff; color:var(--text); border-color:var(--line)}
    .btn-ghost:hover{border-color:#b9c7ea; transform:translateY(-1px)}
    .menu-toggle{display:none}
    main{padding-bottom:22px}
    section{padding:26px 0}
    .hero{padding:28px 0 18px}
    .hero-grid{display:grid; grid-template-columns:1.25fr .75fr; gap:22px; align-items:stretch}
    .hero-card,.panel,.card,.faq-item,.quote,.form-wrap,.table-wrap{background:rgba(255,255,255,.92); border:1px solid rgba(221,228,243,.9); border-radius:var(--radius); box-shadow:var(--shadow)}
    .hero-card{padding:30px; position:relative; overflow:hidden}
    .hero-card::before,.hero-card::after{
      content:""; position:absolute; border-radius:999px; pointer-events:none;
      background:linear-gradient(135deg, rgba(47,107,255,.18), rgba(124,77,255,.08), transparent);
      filter:blur(2px);
    }
    .hero-card::before{width:250px;height:250px; right:-90px; top:-70px}
    .hero-card::after{width:180px;height:180px; right:80px; bottom:-90px}
    .eyebrow{
      display:inline-flex; align-items:center; gap:8px; padding:8px 12px;
      background:linear-gradient(135deg, rgba(47,107,255,.12), rgba(18,194,233,.10));
      color:#2153d5; border-radius:999px; font-size:13px; font-weight:700
    }
    h1{font-size:clamp(30px,5vw,54px); line-height:1.08; margin:16px 0 14px}
    .lead{font-size:16px; color:var(--muted); line-height:1.8; max-width:60ch}
    .hero-actions{display:flex; flex-wrap:wrap; gap:12px; margin:22px 0}
    .mini-tags{display:flex; flex-wrap:wrap; gap:10px; margin-top:14px}
    .tag{padding:9px 12px; border-radius:999px; background:#f3f6ff; border:1px solid #dbe4fb; color:#304160; font-size:13px}
    .hero-side{display:grid; gap:14px}
    .stat-grid{display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:14px}
    .stat{padding:18px; background:linear-gradient(180deg,#fff,#f7f9ff); border:1px solid var(--line); border-radius:20px}
    .stat b{display:block; font-size:28px; color:#1a2a4a}
    .stat span{display:block; color:var(--muted); font-size:13px; margin-top:5px; line-height:1.5}
    .panel{padding:20px}
    .panel h3{margin:0 0 10px; font-size:18px}
    .panel p{margin:0; color:var(--muted); line-height:1.7}
    .logos{display:flex; flex-wrap:wrap; gap:10px; margin-top:14px}
    .logos span{padding:8px 10px; border-radius:12px; background:#f6f8ff; border:1px solid #e2e8f7; font-size:13px}
    .section-head{display:flex; align-items:end; justify-content:space-between; gap:16px; margin-bottom:16px}
    .section-head h2{margin:0; font-size:28px}
    .section-head p{margin:0; color:var(--muted); line-height:1.7; max-width:62ch}
    .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{padding:20px}
    .card h3{margin:8px 0 10px; font-size:18px}
    .card p,.card li{color:var(--muted); line-height:1.7}
    .icon{
      width:44px;height:44px;border-radius:14px; display:grid; place-items:center;
      background:linear-gradient(135deg, rgba(47,107,255,.12), rgba(124,77,255,.12)); color:#2455d4; font-weight:900
    }
    .list{padding-left:18px; margin:0}
    .timeline{display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:16px}
    .step{padding:18px; border-radius:20px; background:linear-gradient(180deg,#fff,#f7f9ff); border:1px solid var(--line)}
    .step .num{display:inline-flex; width:34px; height:34px; align-items:center; justify-content:center; border-radius:50%; background:linear-gradient(135deg,var(--brand),var(--brand-2)); color:#fff; font-weight:800}
    .step h3{margin:12px 0 8px; font-size:17px}
    .step p{margin:0; color:var(--muted); line-height:1.7}
    .scroll-x{overflow:auto; border-radius:var(--radius)}
    table{width:100%; border-collapse:collapse; min-width:900px; background:#fff}
    th,td{padding:15px 14px; border-bottom:1px solid var(--line); text-align:left; vertical-align:top}
    th{background:#f4f7ff; color:#1c2b47; font-size:14px}
    td{color:var(--text); font-size:14px; line-height:1.65}
    .badge{display:inline-flex; align-items:center; padding:6px 10px; border-radius:999px; font-size:12px; font-weight:700}
    .good{background:#e9fff5; color:#147a54}
    .warn{background:#fff6e8; color:#9b6400}
    .soft{background:#edf3ff; color:#2f5fd5}
    .quote{padding:20px}
    .quote strong{display:block; margin-bottom:8px}
    .rating{display:flex; gap:4px; color:#f5b942; margin:8px 0}
    .faq{display:grid; gap:12px}
    .faq-item{overflow:hidden}
    .faq-q{
      width:100%; border:0; background:transparent; color:var(--text); padding:18px 20px;
      display:flex; justify-content:space-between; align-items:center; gap:12px; font-size:16px; font-weight:700; cursor:pointer
    }
    .faq-a{max-height:0; overflow:hidden; transition:max-height .3s ease; padding:0 20px}
    .faq-item.open .faq-a{max-height:180px; padding-bottom:18px}
    .faq-a p{margin:0; color:var(--muted); line-height:1.8}
    .form-wrap{padding:22px}
    .form-grid{display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:14px}
    label{display:block; font-size:13px; color:#33445f; margin-bottom:8px; font-weight:700}
    input,select,textarea{
      width:100%; border:1px solid #d7dff0; border-radius:14px; background:#fff; color:var(--text);
      padding:13px 14px; font:inherit; outline:none; transition:border-color .2s, box-shadow .2s;
    }
    input:focus,select:focus,textarea:focus{border-color:#6b8eff; box-shadow:0 0 0 4px rgba(47,107,255,.10)}
    textarea{min-height:120px; resize:vertical}
    .full{grid-column:1/-1}
    .footer-links{display:flex; flex-wrap:wrap; gap:10px}
    footer{margin-top:8px; background:#eef2fb; border-top:1px solid #dce4f3; color:#20304a}
    footer .container{padding:24px 0}
    .footer-grid{display:grid; grid-template-columns:1.2fr .8fr; gap:18px; align-items:start}
    .footer-note{color:#51627d; line-height:1.8}
    .contact-box{display:grid; gap:12px}
    .qr{display:flex; gap:14px; align-items:center; padding:16px; background:#fff; border:1px solid var(--line); border-radius:18px}
    .qr img{width:96px; height:96px; object-fit:cover; border-radius:12px; background:#f3f6ff}
    .floating{
      position:fixed; right:16px; bottom:16px; z-index:50; display:grid; gap:10px
    }
    .floating a,.floating button{
      width:52px; height:52px; border-radius:18px; border:1px solid rgba(255,255,255,.6);
      background:linear-gradient(135deg,var(--brand),var(--brand-2)); color:#fff; box-shadow:0 14px 28px rgba(47,107,255,.26);
      display:grid; place-items:center; cursor:pointer
    }
    .backtop{opacity:0; pointer-events:none; transform:translateY(8px); transition:.25s}
    .backtop.show{opacity:1; pointer-events:auto; transform:translateY(0)}
    .image-strip{display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:14px}
    .image-strip img{border-radius:18px; border:1px solid var(--line); box-shadow:var(--shadow-soft)}
    .article-list{display:grid; gap:12px}
    .article-item{
      display:flex; justify-content:space-between; gap:12px; padding:16px 18px;
      border:1px solid var(--line); border-radius:18px; background:#fff
    }
    .article-item span{color:var(--muted)}
    .chip-cloud{display:flex; flex-wrap:wrap; gap:10px}
    .chip-cloud a,.chip-cloud span{padding:9px 12px; border-radius:999px; background:#fff; border:1px solid var(--line); color:#33445f; font-size:13px}
    .hidden-mobile{display:block}
    @media (max-width: 960px){
      .hero-grid,.grid-3,.grid-4,.timeline,.footer-grid,.form-grid,.image-strip,.stat-grid{grid-template-columns:1fr}
      .section-head{align-items:start; flex-direction:column}
      .menu{display:none}
      .menu-toggle{display:inline-flex}
      .nav-actions .btn-ghost{display:none}
      .hidden-mobile{display:none}
      .hero-card{padding:24px}
    }
    @media (max-width: 640px){
      .container{width:min(var(--container), calc(100% - 24px))}
      .nav{padding:12px 0}
      h1{font-size:32px}
      .hero-card,.panel,.card,.step,.quote,.form-wrap{border-radius:18px}
      .article-item{flex-direction:column}
      .qr{align-items:flex-start}
      .faq-q{font-size:15px}
    }
    .reveal{opacity:0; transform:translateY(18px); transition:.7s ease}
    .reveal.show{opacity:1; transform:none}
    .mobile-menu{
      display:none; padding:0 0 14px
    }
    .mobile-menu.open{display:block}
    .mobile-menu a{display:block; padding:10px 0; color:var(--text); border-top:1px solid rgba(221,228,243,.7)}