:root{--bg:#f6f8fc;--bg2:#eef4ff;--card:#ffffff;--text:#132238;--muted:#5d6b82;--line:#d9e2f2;--pri:#4f7cff;--pri2:#7c5cff;--accent:#19c6d2;--shadow:0 20px 60px rgba(28,56,116,.10);--radius:22px}
    *{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 top left,#ffffff 0,#f4f8ff 34%,#eff4ff 100%);color:var(--text)}
    a{color:inherit;text-decoration:none}img{display:block;max-width:100%}
    .container{width:min(1180px,calc(100% - 32px));margin:0 auto}
    header{position:sticky;top:0;z-index:30;background:rgba(246,248,252,.82);backdrop-filter:blur(14px);border-bottom:1px solid rgba(217,226,242,.75)}
    .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;box-shadow:0 10px 20px rgba(79,124,255,.12)}
    .brand strong{display:block;font-size:18px;letter-spacing:.5px}.brand span{display:block;font-size:12px;color:var(--muted)}
    .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}
    .nav-links a:hover,.nav-links a:focus{color:var(--text);background:#fff;box-shadow:0 8px 20px rgba(25,198,210,.10)}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:999px;padding:13px 18px;font-weight:700;cursor:pointer;transition:.25s ease;white-space:nowrap}
    .btn-primary{color:#fff;background:linear-gradient(135deg,var(--pri),var(--pri2));box-shadow:0 16px 30px rgba(79,124,255,.28)}.btn-primary:hover{transform:translateY(-2px)}
    .btn-ghost{background:#fff;color:var(--text);border:1px solid var(--line)}.btn-ghost:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
    .hero{padding:42px 0 18px}.hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:20px;align-items:stretch}
    .hero-main,.hero-side,.panel,.card,.faq-item,.form-wrap,.table-wrap,.quote{background:linear-gradient(180deg,rgba(255,255,255,.98),rgba(255,255,255,.92));border:1px solid rgba(217,226,242,.95);border-radius:var(--radius);box-shadow:var(--shadow)}
    .hero-main{padding:34px;position:relative;overflow:hidden}
    .hero-main::before,.hero-main::after{content:"";position:absolute;border-radius:999px;filter:blur(4px);pointer-events:none}
    .hero-main::before{width:220px;height:220px;background:radial-gradient(circle,#7ad8ff 0,rgba(122,216,255,0) 70%);right:-60px;top:-30px}
    .hero-main::after{width:180px;height:180px;background:radial-gradient(circle,#8d6dff 0,rgba(141,109,255,0) 68%);right:80px;bottom:-90px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:rgba(79,124,255,.08);color:#2752d8;font-size:13px;font-weight:700}
    h1{margin:18px 0 14px;font-size:clamp(34px,5vw,56px);line-height:1.05;letter-spacing:-.04em}
    .lead{font-size:18px;line-height:1.75;color:var(--muted);max-width:760px;margin:0 0 22px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:22px}
    .hero-points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
    .mini-stat{padding:16px;border-radius:18px;background:linear-gradient(180deg,#f8fbff,#eef4ff);border:1px solid #dde7fb}
    .mini-stat b{display:block;font-size:20px}.mini-stat span{display:block;font-size:13px;color:var(--muted);margin-top:6px;line-height:1.5}
    .hero-side{padding:22px;display:grid;gap:14px;align-content:start}
    .side-metric{padding:16px;border-radius:18px;background:#fff;border:1px solid var(--line)}
    .side-metric .v{font-size:26px;font-weight:800;color:#20314b}.side-metric .t{font-size:13px;color:var(--muted);margin-top:6px}
    section{padding:22px 0}.section-title{display:flex;align-items:end;justify-content:space-between;gap:16px;margin:0 0 16px}
    .section-title h2{margin:0;font-size:clamp(24px,3vw,34px)}.section-title p{margin:0;color:var(--muted);max-width:720px;line-height:1.7}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .card{padding:20px;transition:.25s ease}.card:hover{transform:translateY(-4px);box-shadow:0 24px 64px rgba(28,56,116,.14)}
    .card h3,.card h4{margin:0 0 10px}.card p,.card li{color:var(--muted);line-height:1.75}
    .icon{width:42px;height:42px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg,rgba(79,124,255,.12),rgba(25,198,210,.12));color:#2856de;font-weight:900;margin-bottom:12px}
    .chips{display:flex;flex-wrap:wrap;gap:10px}.chip{padding:9px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;color:#31445f}
    .timeline{display:grid;gap:12px}.step{display:flex;gap:14px;padding:18px;border-radius:20px;background:#fff;border:1px solid var(--line)}.step .n{flex:0 0 38px;height:38px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,var(--pri),var(--accent));color:#fff;font-weight:800}
    .table-wrap{overflow:auto}.table{width:100%;border-collapse:collapse;min-width:860px}.table th,.table td{padding:14px 12px;border-bottom:1px solid #e6edf9;text-align:left;vertical-align:top}.table th{background:#f5f8ff;color:#21324e}.table td{color:var(--muted)}
    .rating{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.stars{color:#ffb400;font-size:22px;letter-spacing:2px;font-weight:900}
    .faq-item{overflow:hidden}.faq-q{width:100%;border:0;background:transparent;padding:18px 20px;font-size:16px;font-weight:700;color:var(--text);display:flex;justify-content:space-between;gap:12px;cursor:pointer;text-align:left}
    .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;padding:0 20px;color:var(--muted);line-height:1.8}.faq-item.open .faq-a{padding-bottom:18px;max-height:220px}
    .quote{padding:18px}.quote .meta{display:flex;justify-content:space-between;gap:10px;align-items:center;margin-bottom:10px}.quote .name{font-weight:800}.quote .role{font-size:12px;color:var(--muted)}
    .articles,.links-cloud{display:grid;gap:12px}.article{padding:18px;border-radius:18px;background:#fff;border:1px solid var(--line)}.article a{color:#2148c6;font-weight:700}
    .form-wrap{padding:22px}.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.field{display:grid;gap:8px}.field label{font-size:14px;font-weight:700;color:#22344d}.field input,.field select,.field textarea{width:100%;border:1px solid #d8e2f3;border-radius:14px;background:#fff;color:var(--text);padding:13px 14px;font:inherit;outline:none}.field textarea{min-height:120px;resize:vertical}.field input:focus,.field select:focus,.field textarea:focus{border-color:#7a9cff;box-shadow:0 0 0 4px rgba(79,124,255,.10)}
    footer{margin-top:18px;padding:24px 0 34px;background:#f2f6ff;border-top:1px solid #d8e2f3;color:#1a2940}
    footer a{color:#2148c6}.footer-grid{display:grid;grid-template-columns:1.1fr .9fr .8fr;gap:16px}.small{font-size:13px;color:#5c6a80;line-height:1.8}
    .floating{position:fixed;right:18px;bottom:18px;z-index:40;display:grid;gap:10px}.float-btn{display:inline-flex;align-items:center;justify-content:center;width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,var(--pri),var(--pri2));color:#fff;box-shadow:0 16px 30px rgba(79,124,255,.28);font-weight:800}
    .mobile-toggle{display:none}
    .panel{padding:20px}
    .image-row{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .image-row img,.single-image img{border-radius:18px;border:1px solid var(--line)}
    .service-network{display:flex;flex-wrap:wrap;gap:10px}
    .service-network span{padding:10px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#3b4d68;font-size:13px}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}.tag-cloud span{padding:8px 11px;border-radius:999px;background:linear-gradient(135deg,#f7faff,#eef5ff);border:1px solid #dde7fb;color:#31445f;font-size:13px}
    .scroll-reveal{opacity:0;transform:translateY(16px);transition:.6s ease}.scroll-reveal.show{opacity:1;transform:none}
    @media (max-width: 980px){
      .hero-grid,.grid-4,.grid-3,.grid-2,.footer-grid,.form-grid,.image-row{grid-template-columns:1fr}
      .nav-links{display:none}.mobile-toggle{display:inline-flex}
      .nav.open .nav-links{display:flex;position:absolute;left:16px;right:16px;top:68px;padding:14px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);flex-direction:column;align-items:flex-start}
      .hero-points{grid-template-columns:1fr}
      h1{font-size:clamp(30px,8vw,44px)}
    }