:root{
      --bg:#f7f4ff;
      --bg2:#ffffff;
      --card:#ffffff;
      --text:#1f2430;
      --muted:#5f6575;
      --line:#e7e0fb;
      --primary:#7a39ff;
      --primary2:#b14cff;
      --accent:#ff6ea8;
      --shadow:0 20px 50px rgba(84,43,163,.12);
      --shadow2:0 12px 30px rgba(122,57,255,.15);
      --radius:20px;
      --radius2:28px;
      --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;background:radial-gradient(circle at top left,#fff 0,#fbf8ff 26%,#f4efff 100%);color:var(--text)}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--container),calc(100% - 32px));margin:0 auto}
    .topbar{position:sticky;top:0;z-index:50;background:rgba(247,244,255,.88);backdrop-filter:blur(14px);border-bottom:1px solid rgba(231,224,251,.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}
    .brand .ai-page-logo{width:42px;height:42px;object-fit:contain}
    .brand strong{display:block;font-size:16px;letter-spacing:.4px}
    .brand span{display:block;font-size:12px;color:var(--muted)}
    .navlinks{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    .navlinks a{font-size:14px;color:#343b4a;padding:8px 10px;border-radius:999px;transition:.25s ease}
    .navlinks a:hover,.navlinks a.active{background:#fff;color:var(--primary);box-shadow:0 8px 20px rgba(122,57,255,.09)}
    .menu-btn{display:none;border:1px solid var(--line);background:#fff;color:var(--text);border-radius:12px;padding:10px 12px}
    .hero{position:relative;overflow:hidden;padding:52px 0 28px}
    .hero::before,.hero::after{content:"";position:absolute;inset:auto;border-radius:999px;filter:blur(14px);opacity:.7;pointer-events:none}
    .hero::before{width:280px;height:280px;background:radial-gradient(circle,#d9c1ff 0,rgba(217,193,255,0) 70%);top:-80px;right:-60px}
    .hero::after{width:220px;height:220px;background:radial-gradient(circle,#ffcae0 0,rgba(255,202,224,0) 72%);bottom:10px;left:-40px}
    .hero-grid{display:grid;grid-template-columns:1.35fr .9fr;gap:22px;align-items:stretch}
    .hero-main,.hero-side,.card,.panel,.faq-item,.review,.article,.step,.compare,.form-box,.quote,.metric{background:rgba(255,255,255,.92);border:1px solid rgba(231,224,251,.95);border-radius:var(--radius2);box-shadow:var(--shadow);backdrop-filter:blur(6px)}
    .hero-main{padding:34px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--primary);background:#f2ebff;border:1px solid #e4d8ff;padding:8px 12px;border-radius:999px}
    h1{margin:16px 0 14px;font-size:clamp(32px,4vw,56px);line-height:1.08;letter-spacing:-.8px}
    .lead{margin:0;color:var(--muted);font-size:16px;line-height:1.9;max-width:62ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:14px;padding:13px 18px;font-weight:700;font-size:14px;border:1px solid transparent;transition:.25s ease;cursor:pointer}
    .btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;box-shadow:0 16px 30px rgba(122,57,255,.22)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 20px 36px rgba(122,57,255,.28)}
    .btn-ghost{background:#fff;color:var(--primary);border-color:#dacdff}
    .btn-ghost:hover{transform:translateY(-2px);box-shadow:var(--shadow2)}
    .hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
    .chip{padding:9px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;color:#424b5b}
    .hero-side{padding:24px}
    .stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    .metric{padding:18px}
    .metric b{display:block;font-size:24px;color:var(--primary);margin-bottom:6px}
    .metric span{font-size:13px;color:var(--muted);line-height:1.5}
    .hero-note{margin-top:14px;padding:16px;border-radius:18px;background:linear-gradient(180deg,#f8f3ff,#fff);border:1px dashed #d9c9ff;color:#3b4252;line-height:1.8}
    main{padding:8px 0 28px}
    section{padding:18px 0}
    .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);max-width:64ch;line-height:1.8}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    .card,.panel,.article,.review,.faq-item,.step,.compare,.form-box{padding:22px}
    .card h3,.panel h3,.article h3,.review h3,.step h3,.form-box h3{margin:0 0 10px;font-size:19px}
    .card p,.panel p,.article p,.review p,.step p,.form-box p{margin:0;color:var(--muted);line-height:1.8}
    .icon{width:42px;height:42px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg,#efe6ff,#fff1fb);color:var(--primary);margin-bottom:14px;font-weight:900}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag-cloud span{padding:8px 11px;border-radius:999px;background:#faf8ff;border:1px solid var(--line);font-size:13px;color:#3c4353}
    .timeline{display:grid;gap:12px}
    .timeline-item{display:flex;gap:14px;padding:16px;border:1px solid var(--line);border-radius:18px;background:#fff}
    .timeline-item .dot{width:12px;height:12px;border-radius:50%;margin-top:6px;background:linear-gradient(135deg,var(--primary),var(--accent));flex:0 0 auto}
    .timeline-item b{display:block;margin-bottom:4px}
    .timeline-item span{display:block;color:var(--muted);line-height:1.7;font-size:14px}
    .table-wrap{overflow:auto;border-radius:18px;border:1px solid var(--line);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:14px 16px;border-bottom:1px solid #eee;text-align:left;vertical-align:top;font-size:14px}
    th{background:#faf7ff;color:#30384b}
    td{color:#454c5d}
    .rating{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:#f3ecff;color:#6b2cff;font-weight:700}
    .faq-list{display:grid;gap:12px}
    .faq-item{padding:0;overflow:hidden}
    .faq-q{display:flex;justify-content:space-between;align-items:center;gap:14px;width:100%;padding:18px 20px;background:transparent;border:none;text-align:left;font-size:16px;font-weight:700;color:#222;cursor:pointer}
    .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease}
    .faq-a p{padding:0 20px 18px;margin:0;color:var(--muted);line-height:1.85}
    .faq-item.open .faq-a{max-height:200px}
    .faq-item.open .faq-q{color:var(--primary)}
    .reviews .review{height:100%}
    .review .meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:12px}
    .review .role{font-size:13px;color:var(--primary);background:#f2ebff;padding:6px 10px;border-radius:999px}
    .article-list{display:grid;gap:12px}
    .article{display:flex;justify-content:space-between;gap:16px;align-items:center}
    .article small{color:var(--muted)}
    .form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    label{display:block;font-size:13px;color:#3a4150;margin-bottom:8px}
    input,select,textarea{width:100%;border:1px solid #dcd5ef;background:#fff;border-radius:14px;padding:13px 14px;font:inherit;color:var(--text);outline:none;transition:.2s ease}
    input:focus,select:focus,textarea:focus{border-color:#b89cff;box-shadow:0 0 0 4px rgba(122,57,255,.08)}
    textarea{min-height:120px;resize:vertical}
    .form-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:14px}
    .footer{margin-top:10px;padding:26px 0 34px;background:linear-gradient(180deg,#f3ecff,#efe7ff);border-top:1px solid #e0d1ff;color:#243047}
    .footer a{color:#5d2fd8}
    .footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:18px}
    .footer p,.footer li{color:#485065;line-height:1.8}
    .footer ul{margin:0;padding:0;list-style:none;display:grid;gap:8px}
    .floating{position:fixed;right:14px;bottom:16px;z-index:60;display:grid;gap:10px}
    .float-btn{width:52px;height:52px;border:none;border-radius:16px;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;display:grid;place-items:center;box-shadow:var(--shadow2);cursor:pointer}
    .service-box{position:fixed;right:14px;bottom:82px;z-index:59;width:min(320px,calc(100vw - 28px));background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);padding:16px;display:none}
    .service-box.open{display:block}
    .service-box img{border-radius:14px;border:1px solid #eee;margin-top:10px}
    .two-col{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .mini-list{display:grid;gap:10px}
    .mini-list div{padding:13px 14px;background:#fff;border:1px solid var(--line);border-radius:14px;color:#424b5b}
    .scroll-top{position:fixed;right:14px;bottom:146px;z-index:60}
    .fade-in{opacity:0;transform:translateY(16px);transition:.6s ease}
    .fade-in.visible{opacity:1;transform:none}
    .mobile-only{display:none}
    @media (max-width: 980px){
      .hero-grid,.grid-3,.grid-2,.footer-grid,.two-col,.form-grid{grid-template-columns:1fr}
      .navlinks{display:none;position:absolute;top:100%;left:0;right:0;background:rgba(255,255,255,.98);padding:14px 16px;border-bottom:1px solid var(--line);box-shadow:0 12px 30px rgba(0,0,0,.05)}
      .navlinks.open{display:flex;flex-direction:column;align-items:flex-start}
      .menu-btn{display:inline-flex}
      .mobile-only{display:block}
    }
    @media (max-width: 640px){
      .hero{padding-top:30px}
      .hero-main,.hero-side,.card,.panel,.article,.review,.faq-item,.step,.compare,.form-box{padding:18px}
      h1{font-size:30px}
      .section-head{flex-direction:column;align-items:flex-start}
      .stat-grid{grid-template-columns:1fr 1fr}
      .article{align-items:flex-start;flex-direction:column}
      .scroll-top,.floating{right:10px}
      .service-box{right:10px}
    }