:root{
      --bg:#f6f8fc;
      --surface:#ffffff;
      --surface-2:#f3f7ff;
      --line:#dbe5f4;
      --text:#1f2a37;
      --muted:#5f6b7a;
      --brand:#0b6cff;
      --brand-2:#15c1b8;
      --accent:#ffb64d;
      --shadow:0 18px 50px rgba(22,54,120,.10);
      --shadow-soft:0 10px 28px rgba(22,54,120,.08);
      --radius:20px;
      --radius-sm:14px;
      --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(11,108,255,.12), transparent 25%),
        radial-gradient(circle at top right, rgba(21,193,184,.10), transparent 24%),
        linear-gradient(180deg, #fbfdff 0%, #f5f8fe 42%, #f6f8fc 100%);
    }
    a{color:inherit;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:50;
      backdrop-filter:saturate(180%) blur(14px);
      background:rgba(255,255,255,.82);
      border-bottom:1px solid rgba(219,229,244,.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:42px;height:42px;object-fit:contain;border-radius:12px;background:#fff;border:1px solid var(--line);padding:4px;box-shadow:0 8px 18px rgba(0,0,0,.05)}
    .brand strong{display:block;font-size:18px;line-height:1.1}
    .brand span{display:block;font-size:12px;color:var(--muted);margin-top:4px}
    .menu-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:12px;padding:10px 12px;color:var(--text)}
    nav ul{display:flex;gap:18px;list-style:none;margin:0;padding:0;align-items:center;flex-wrap:wrap;justify-content:flex-end}
    nav a{font-size:14px;color:#314256;padding:8px 0;position:relative}
    nav a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:linear-gradient(90deg,var(--brand),var(--brand-2));transition:.25s ease}
    nav a:hover::after, nav a:focus::after{width:100%}
    .top-cta{display:flex;gap:10px;align-items:center}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      border:1px solid transparent;border-radius:14px;padding:12px 16px;
      font-weight:700;cursor:pointer;transition:.25s ease;white-space:nowrap
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),#2b8cff);color:#fff;box-shadow:0 14px 28px rgba(11,108,255,.22)}
    .btn-secondary{background:#fff;border-color:var(--line);color:var(--text)}
    .btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-soft)}
    main{display:block}
    section{padding:72px 0}
    .hero{padding:34px 0 56px}
    .hero-grid{display:grid;grid-template-columns:1.18fr .82fr;gap:22px;align-items:stretch}
    .hero-card,.info-card,.panel,.faq-item,.review-card,.case-card,.article-card,.quote-card,.form-card,.compare-card{
      background:rgba(255,255,255,.9);border:1px solid rgba(219,229,244,.9);border-radius:var(--radius);box-shadow:var(--shadow-soft)
    }
    .hero-card{padding:34px;overflow:hidden;position:relative}
    .hero-card::before,.hero-card::after{
      content:"";position:absolute;border-radius:999px;background:linear-gradient(135deg,rgba(11,108,255,.14),rgba(21,193,184,.14));filter:blur(4px)
    }
    .hero-card::before{width:220px;height:220px;right:-90px;top:-80px}
    .hero-card::after{width:160px;height:160px;right:90px;bottom:-70px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:#eef5ff;color:#2457c5;font-size:13px;font-weight:700}
    h1{font-size:clamp(30px,4.4vw,54px);line-height:1.06;margin:16px 0 14px;letter-spacing:-.02em}
    .hero p{color:var(--muted);font-size:16px;line-height:1.8;margin:0 0 18px;max-width:62ch}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:18px 0 22px}
    .hero-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:18px}
    .point{background:linear-gradient(180deg,#fff,#f7fbff);border:1px solid var(--line);border-radius:16px;padding:14px}
    .point b{display:block;font-size:17px}
    .point span{display:block;color:var(--muted);font-size:13px;margin-top:4px;line-height:1.6}
    .hero-side{display:grid;gap:14px}
    .data-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .metric{padding:20px;min-height:124px}
    .metric .num{font-size:30px;font-weight:800;color:#103d8a}
    .metric .label{font-size:14px;font-weight:700;margin-top:6px}
    .metric .desc{font-size:13px;color:var(--muted);line-height:1.7;margin-top:8px}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:16px;margin-bottom:22px}
    .section-head h2{margin:0;font-size:clamp(24px,3vw,36px)}
    .section-head p{margin:0;color:var(--muted);max-width:64ch;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{padding:22px}
    .card h3{margin:12px 0 10px;font-size:18px}
    .card p,.card li{color:var(--muted);line-height:1.75}
    .badge{display:inline-flex;padding:7px 10px;border-radius:999px;background:#eef8f7;color:#0a7f78;font-size:12px;font-weight:700}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:10px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#314256;font-size:13px;box-shadow:0 6px 18px rgba(16,61,138,.05)}
    .table-wrap{overflow-x:auto;border-radius:18px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-soft)}
    table{width:100%;border-collapse:collapse;min-width:820px}
    th,td{padding:16px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
    th{background:#f7faff;font-size:14px}
    td{font-size:14px;color:#314256}
    .star{color:#f5a623;font-weight:800}
    .timeline{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .step{padding:20px;position:relative}
    .step .index{width:38px;height:38px;border-radius:12px;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800}
    .step h3{margin:14px 0 8px}
    .step p{margin:0;color:var(--muted);line-height:1.7}
    .split{display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:start}
    .list{margin:0;padding-left:18px}
    .list li{margin:10px 0;color:var(--muted);line-height:1.7}
    .faq-item{margin-bottom:12px;overflow:hidden}
    .faq-q{width:100%;display:flex;justify-content:space-between;align-items:center;gap:12px;background:none;border:0;padding:18px 20px;font-size:16px;font-weight:700;color:var(--text);cursor:pointer;text-align:left}
    .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;padding:0 20px}
    .faq-item.active .faq-a{padding-bottom:18px}
    .faq-a p{margin:0;color:var(--muted);line-height:1.8}
    .reviews,.cases,.articles{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .review-card,.case-card,.article-card{padding:22px}
    .review-card .who{font-weight:800;margin-bottom:8px}
    .review-card .role{font-size:13px;color:#2e5ea8;margin-bottom:12px}
    .review-card p,.case-card p,.article-card p{margin:0;color:var(--muted);line-height:1.75}
    .quote-card{padding:22px;background:linear-gradient(180deg,#ffffff,#f5fbff)}
    .form-card{padding:24px}
    form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    label{display:block;font-size:14px;font-weight:700;margin-bottom:8px;color:#2b3b4f}
    input,select,textarea{
      width:100%;border:1px solid #cfd9ea;border-radius:14px;padding:13px 14px;font:inherit;color:var(--text);background:#fff;outline:none;transition:.2s ease
    }
    textarea{min-height:120px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:#72a7ff;box-shadow:0 0 0 4px rgba(11,108,255,.10)}
    .full{grid-column:1/-1}
    .submit{display:inline-flex;justify-content:center}
    .media-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:16px}
    .image-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .image-grid img,.wide-image img{border-radius:18px;border:1px solid var(--line);box-shadow:var(--shadow-soft);object-fit:cover;width:100%;height:auto}
    .footer-wrap{
      background:linear-gradient(180deg,#eff5ff,#e9f0fb);
      border-top:1px solid var(--line);
      color:#203040;
    }
    footer{padding:34px 0 26px}
    .footer-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:18px;align-items:start}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px}
    .mini{font-size:13px;color:#526274;line-height:1.8}
    .bottom{margin-top:20px;padding-top:16px;border-top:1px solid rgba(219,229,244,.9);font-size:13px;color:#526274}
    .floating{
      position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px
    }
    .float-btn{
      width:52px;height:52px;border-radius:16px;border:1px solid rgba(219,229,244,.95);
      background:#fff;box-shadow:var(--shadow-soft);display:flex;align-items:center;justify-content:center;font-size:20px
    }
    .customer{
      position:fixed;left:16px;bottom:16px;z-index:60;max-width:250px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);overflow:hidden
    }
    .customer .head{padding:12px 14px;background:linear-gradient(135deg,#eef5ff,#f2fbff);font-weight:800}
    .customer .body{padding:12px 14px}
    .customer .body p{margin:6px 0;color:var(--muted);font-size:13px;line-height:1.6}
    .mobile-only{display:none}
    .reveal{opacity:0;transform:translateY(16px);transition:.55s ease}
    .reveal.in{opacity:1;transform:none}
    @media (max-width: 980px){
      .hero-grid,.split,.media-grid,.footer-grid,.grid-3,.grid-4,.reviews,.cases,.articles,.timeline{grid-template-columns:1fr}
      .hero-points,.data-grid{grid-template-columns:1fr 1fr}
      nav{display:none}
      .menu-toggle{display:inline-flex}
      nav.open{display:block;position:absolute;left:0;right:0;top:100%;background:rgba(255,255,255,.98);border-bottom:1px solid var(--line);box-shadow:var(--shadow)}
      nav.open ul{padding:12px 0 16px;flex-direction:column;align-items:flex-start;gap:10px}
      .nav{position:relative}
      .top-cta{display:none}
      .mobile-only{display:inline-flex}
      form{grid-template-columns:1fr}
    }
    @media (max-width: 640px){
      section{padding:56px 0}
      .hero{padding-top:18px}
      .hero-card{padding:24px}
      .hero-points,.data-grid{grid-template-columns:1fr}
      .customer{display:none}
      .floating{right:12px;bottom:12px}
      .float-btn{width:48px;height:48px}
    }