:root{
      --bg:#f6f7fb;
      --panel:#ffffff;
      --panel-2:#fbfcff;
      --text:#172033;
      --muted:#5f6b85;
      --line:#dfe5f2;
      --primary:#6a5cff;
      --primary-2:#00b7c3;
      --accent:#ff7ab6;
      --gold:#b58b3f;
      --shadow:0 16px 40px rgba(24,39,75,.08);
      --radius:22px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:Inter,system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;background:
      radial-gradient(circle at 10% 0%, rgba(106,92,255,.10), transparent 28%),
      radial-gradient(circle at 90% 10%, rgba(0,183,195,.08), transparent 24%),
      linear-gradient(180deg,#fbfcff 0%,#f6f7fb 35%,#f6f7fb 100%);
      color:var(--text);line-height:1.65}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--container),calc(100% - 32px));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:50;background:rgba(246,247,251,.82);backdrop-filter:blur(14px);border-bottom:1px solid rgba(223,229,242,.8)}
    .nav{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:14px 0}
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .ai-page-logo{width:42px;height:42px;object-fit:contain;border-radius:12px;background:#fff;border:1px solid var(--line);padding:5px;box-shadow:0 8px 18px rgba(34,50,84,.08)}
    .brand strong{display:block;font-size:1.02rem}
    .brand span{display:block;font-size:.82rem;color:var(--muted)}
    .menu{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    .menu a{font-size:.95rem;color:var(--muted);padding:8px 0;position:relative}
    .menu a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:linear-gradient(90deg,var(--primary),var(--primary-2));transition:.25s}
    .menu a:hover::after,.menu a:focus::after{width:100%}
    .nav-cta{display:flex;align-items:center;gap:10px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:999px;padding:12px 18px;font-weight:700;cursor:pointer;transition:.25s ease;box-shadow:none}
    .btn-primary{color:#fff;background:linear-gradient(135deg,var(--primary),var(--primary-2));box-shadow:0 12px 26px rgba(106,92,255,.22)}
    .btn-secondary{background:#fff;color:var(--text);border:1px solid var(--line)}
    .btn:hover{transform:translateY(-2px);box-shadow:0 16px 28px rgba(24,39,75,.12)}
    .mobile-toggle{display:none;background:#fff;border:1px solid var(--line);width:44px;height:44px;border-radius:14px}
    .hero{padding:34px 0 18px}
    .hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:22px;align-items:stretch}
    .hero-main{padding:34px;border-radius:28px;background:
      linear-gradient(135deg, rgba(255,255,255,.86), rgba(255,255,255,.92)),
      radial-gradient(circle at 80% 18%, rgba(255,122,182,.15), transparent 20%),
      radial-gradient(circle at 10% 10%, rgba(0,183,195,.12), transparent 24%);
      border:1px solid rgba(223,229,242,.9);box-shadow:var(--shadow);position:relative;overflow:hidden}
    .hero-main::before{content:"";position:absolute;inset:auto -20% -40% auto;width:260px;height:260px;background:conic-gradient(from 180deg, rgba(106,92,255,.16), rgba(0,183,195,.16), rgba(255,122,182,.16), rgba(106,92,255,.16));border-radius:50%;filter:blur(8px)}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:7px 12px;border-radius:999px;background:rgba(106,92,255,.08);color:var(--primary);font-weight:700;font-size:.88rem}
    h1{margin:16px 0 12px;font-size:clamp(2rem,4vw,3.8rem);line-height:1.08;letter-spacing:-.03em}
    .hero p{margin:0;color:var(--muted);font-size:1.05rem;max-width:60ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:24px 0 18px}
    .hero-points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:18px}
    .point{background:rgba(255,255,255,.88);border:1px solid var(--line);border-radius:18px;padding:14px}
    .point strong{display:block;font-size:1.05rem}
    .point span{display:block;color:var(--muted);font-size:.92rem;margin-top:4px}
    .hero-side{display:grid;gap:14px}
    .glass-card{border-radius:24px;background:linear-gradient(180deg, rgba(17,32,51,.95), rgba(43,54,92,.92));color:#fff;padding:22px;box-shadow:var(--shadow);position:relative;overflow:hidden}
    .glass-card::after{content:"";position:absolute;right:-30px;top:-30px;width:140px;height:140px;background:radial-gradient(circle, rgba(255,255,255,.2), transparent 70%);filter:blur(4px)}
    .glass-card h2,.glass-card p{margin:0}
    .glass-card h2{font-size:1.2rem}
    .glass-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-top:16px}
    .mini{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);border-radius:16px;padding:12px}
    .mini b{display:block;font-size:1rem}
    .mini span{display:block;font-size:.85rem;color:rgba(255,255,255,.74)}
    .section{padding:20px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:12px;margin-bottom:16px}
    .section-head h2{margin:0;font-size:1.7rem}
    .section-head p{margin:0;color:var(--muted);max-width:60ch}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .card{background:var(--panel);border:1px solid var(--line);border-radius:22px;padding:18px;box-shadow:0 8px 24px rgba(24,39,75,.05);transition:transform .25s ease,box-shadow .25s ease}
    .card:hover{transform:translateY(-4px);box-shadow:0 18px 34px rgba(24,39,75,.10)}
    .metric{font-size:1.7rem;font-weight:800;color:var(--primary);margin-bottom:6px}
    .card h3{margin:0 0 8px;font-size:1.06rem}
    .card p{margin:0;color:var(--muted)}
    .tags{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:8px 12px;border-radius:999px;background:linear-gradient(180deg,#fff,#f6f8ff);border:1px solid var(--line);font-size:.92rem;color:#30415f}
    .split{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;align-items:start}
    .list{display:grid;gap:12px}
    .list-item{display:flex;gap:12px;align-items:flex-start;padding:14px;border-radius:18px;background:var(--panel-2);border:1px solid var(--line)}
    .dot{width:10px;height:10px;border-radius:50%;margin-top:8px;background:linear-gradient(135deg,var(--primary),var(--accent))}
    .table-wrap{overflow-x:auto;border-radius:22px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow)}
    table{width:100%;border-collapse:collapse;min-width:860px}
    th,td{padding:16px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
    th{background:#f8faff}
    .highlight{background:linear-gradient(90deg,rgba(106,92,255,.08),rgba(0,183,195,.06))}
    details{background:#fff;border:1px solid var(--line);border-radius:18px;padding:14px 16px;box-shadow:0 8px 18px rgba(24,39,75,.04)}
    details+details{margin-top:12px}
    summary{cursor:pointer;font-weight:700}
    summary::-webkit-details-marker{display:none}
    .quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .quote{padding:18px;border-radius:22px;background:#fff;border:1px solid var(--line)}
    .quote .role{color:var(--primary);font-size:.9rem;font-weight:700}
    .quote p{margin:10px 0;color:var(--text)}
    .case-grid,.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .case{overflow:hidden}
    .case .thumb{border-radius:16px;overflow:hidden;border:1px solid var(--line);background:#f2f5fb;margin-bottom:12px}
    .case .thumb img{width:100%;height:auto}
    .timeline{display:grid;gap:12px}
    .step{display:grid;grid-template-columns:auto 1fr;gap:14px;padding:16px;border-radius:18px;background:#fff;border:1px solid var(--line)}
    .num{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;color:#fff;font-weight:800;background:linear-gradient(135deg,var(--primary),var(--primary-2))}
    .form-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:16px;align-items:start}
    form{display:grid;gap:12px}
    label{display:grid;gap:7px;font-weight:700}
    input,select,textarea{width:100%;border:1px solid var(--line);border-radius:14px;padding:13px 14px;font:inherit;background:#fff;color:var(--text);outline:none}
    input:focus,select:focus,textarea:focus{border-color:rgba(106,92,255,.55);box-shadow:0 0 0 4px rgba(106,92,255,.08)}
    textarea{min-height:120px;resize:vertical}
    .footer{margin-top:18px;padding:24px 0 26px;background:#eef2fb;border-top:1px solid #dde5f5;color:#24324f}
    .footer a{color:#24324f}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:18px}
    .footer small{color:#5f6b85}
    .sidebar-box{background:#fff;border:1px solid var(--line);border-radius:22px;padding:18px}
    .floating{position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px}
    .float-btn{width:52px;height:52px;border-radius:16px;display:grid;place-items:center;background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#fff;box-shadow:0 14px 28px rgba(106,92,255,.24)}
    .back-top{background:#fff;color:var(--text);border:1px solid var(--line)}
    .ai-page-image{border-radius:18px;border:1px solid var(--line);box-shadow:var(--shadow)}
    .reveal{opacity:0;transform:translateY(16px);transition:.6s ease}
    .reveal.show{opacity:1;transform:none}
    @media (max-width: 980px){
      .hero-grid,.split,.form-grid,.footer-grid,.grid-4,.quote-grid,.case-grid,.article-grid{grid-template-columns:1fr}
      .hero-points{grid-template-columns:1fr}
      .menu{display:none}
      .mobile-toggle{display:inline-grid;place-items:center}
      .menu.open{display:flex;position:absolute;left:16px;right:16px;top:72px;background:#fff;border:1px solid var(--line);border-radius:20px;padding:14px;box-shadow:var(--shadow);flex-direction:column;align-items:flex-start;gap:8px}
      .nav{position:relative}
    }