:root{
      --bg:#f7f3ec;
      --bg2:#eef3f7;
      --card:#ffffff;
      --text:#1f2937;
      --muted:#5b6472;
      --line:#dfe5ea;
      --primary:#4f46e5;
      --primary2:#7c3aed;
      --accent:#ea580c;
      --soft:#f5f7ff;
      --shadow:0 18px 50px rgba(47, 54, 86, .10);
      --shadow2:0 10px 24px rgba(47, 54, 86, .08);
      --radius:20px;
      --radius2:28px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(124,58,237,.13), transparent 30%),
        radial-gradient(circle at top right, rgba(79,70,229,.12), transparent 28%),
        linear-gradient(180deg, #fffdf9 0%, var(--bg) 35%, #f5f8fb 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:blur(14px);
      background:rgba(255,255,255,.78);
      border-bottom:1px solid rgba(223,229,234,.9);
    }
    .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 22px rgba(0,0,0,.08);padding:4px}
    .brand strong{display:block;font-size:18px;line-height:1.15}
    .brand span{display:block;font-size:12px;color:var(--muted);margin-top:2px}
    .nav-links{display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:flex-end}
    .nav-links a{font-size:14px;color:#334155;padding:8px 10px;border-radius:999px;transition:.2s}
    .nav-links a:hover{background:#eef2ff;color:#3730a3}
    .nav-actions{display:flex;align-items:center;gap:10px}
    .btn,.btn-outline{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      min-height:44px;padding:0 16px;border-radius:999px;font-weight:700;border:1px solid transparent;
      transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease;
      cursor:pointer;white-space:nowrap
    }
    .btn{background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;box-shadow:0 12px 24px rgba(79,70,229,.22)}
    .btn:hover,.btn-outline:hover{transform:translateY(-1px)}
    .btn-outline{background:#fff;border-color:#dbe2ea;color:#111827}
    .menu-toggle{display:none;background:#fff;border:1px solid #dbe2ea;border-radius:12px;width:44px;height:44px}
    .menu-toggle span{display:block;width:18px;height:2px;background:#334155;margin:4px auto;border-radius:2px}
    .hero{padding:42px 0 20px}
    .hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:22px;align-items:stretch}
    .hero-main,.hero-side,.panel,.card,.faq-item,.review,.step,.info-box,.quote,.form-box,.table-card,.news-item,.article-card{background:rgba(255,255,255,.86);border:1px solid rgba(223,229,234,.9);box-shadow:var(--shadow2);border-radius:var(--radius)}
    .hero-main{padding:34px;border-radius:30px;position:relative;overflow:hidden}
    .hero-main:before,.hero-main:after{content:"";position:absolute;border-radius:999px;filter:blur(10px);opacity:.7;pointer-events:none}
    .hero-main:before{width:240px;height:240px;background:radial-gradient(circle, rgba(124,58,237,.25), transparent 62%);right:-40px;top:-40px}
    .hero-main:after{width:180px;height:180px;background:radial-gradient(circle, rgba(79,70,229,.22), transparent 60%);left:-20px;bottom:-30px}
    .kicker{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:#f1f5ff;color:#3730a3;font-weight:700;font-size:13px}
    h1{margin:16px 0 14px;font-size:clamp(30px,4vw,52px);line-height:1.08;letter-spacing:-.02em}
    .lead{margin:0;color:var(--muted);font-size:16px;line-height:1.8;max-width:62ch}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:24px 0 18px}
    .hero-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
    .tag{display:inline-flex;align-items:center;gap:6px;border:1px solid #dbe2ea;background:#fff;border-radius:999px;padding:8px 12px;font-size:13px;color:#334155}
    .hero-side{padding:22px;display:grid;gap:14px;align-content:start}
    .mini-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    .mini{
      padding:16px;border-radius:18px;background:linear-gradient(180deg,#ffffff,#f8fbff);border:1px solid #e5ebf2
    }
    .mini strong{display:block;font-size:24px;color:#111827}
    .mini span{display:block;font-size:13px;color:var(--muted);margin-top:5px;line-height:1.5}
    .metric-row{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:18px 0 0}
    .metric{padding:18px}
    .metric h3{margin:0 0 8px;font-size:26px}
    .metric p{margin:0;color:var(--muted);line-height:1.6;font-size:14px}
    section{padding:18px 0}
    .section-title{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:16px}
    .section-title h2{margin:0;font-size:clamp(24px,2.6vw,34px);line-height:1.15}
    .section-title p{margin:0;color:var(--muted);max-width:66ch;line-height:1.7}
    .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,.review,.step,.news-item,.article-card{padding:20px}
    .card h3,.panel h3,.review h3,.step h3,.news-item h3,.article-card h3{margin:0 0 10px;font-size:18px}
    .card p,.panel p,.review p,.step p,.news-item p,.article-card p{margin:0;color:var(--muted);line-height:1.75}
    .icon{
      width:46px;height:46px;border-radius:14px;display:grid;place-items:center;margin-bottom:14px;
      background:linear-gradient(135deg,#eef2ff,#f5efff);color:#4338ca;font-size:20px
    }
    .bg-strip{background:linear-gradient(135deg,rgba(79,70,229,.08),rgba(124,58,237,.08));border:1px solid rgba(129,140,248,.18);border-radius:28px;padding:18px}
    .service-wrap,.network-wrap,.faq-wrap,.timeline,.articles-wrap,.reviews-wrap,.compare-wrap{display:grid;gap:16px}
    .service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .workflow{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .step{position:relative;overflow:hidden}
    .step .num{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:50%;background:#111827;color:#fff;font-weight:800;margin-bottom:12px}
    .table-card{padding:0;overflow:hidden}
    table{width:100%;border-collapse:collapse}
    th,td{padding:14px 16px;border-bottom:1px solid #e8edf2;text-align:left;vertical-align:top;font-size:14px;line-height:1.6}
    th{background:#f8fafc;color:#0f172a}
    tr:last-child td{border-bottom:none}
    .compare-badge{display:inline-flex;align-items:center;padding:6px 10px;border-radius:999px;background:#eef2ff;color:#3730a3;font-weight:700;font-size:12px}
    .price-row{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .price-card{padding:20px;border-radius:22px;background:linear-gradient(180deg,#fff,#fafcff);border:1px solid #e5ebf2}
    .price-card strong{display:block;font-size:28px;margin:8px 0}
    .label{color:#6366f1;font-weight:700;font-size:13px}
    .faq-item{padding:0;overflow:hidden}
    .faq-q{width:100%;background:none;border:none;padding:18px 20px;display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:16px;font-weight:700;color:#111827;text-align:left;cursor:pointer}
    .faq-a{padding:0 20px 18px;color:var(--muted);line-height:1.75;display:none}
    .faq-item.active .faq-a{display:block}
    .faq-item.active .faq-q .arrow{transform:rotate(180deg)}
    .arrow{transition:transform .2s ease}
    .review-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px}
    .stars{color:#f59e0b;font-size:14px;letter-spacing:1px}
    .form-box{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:#1f2937}
    input,select,textarea{
      width:100%;border:1px solid #d7dee7;border-radius:14px;padding:13px 14px;font:inherit;background:#fff;color:#111827;outline:none
    }
    textarea{min-height:120px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:#818cf8;box-shadow:0 0 0 4px rgba(129,140,248,.12)}
    .full{grid-column:1/-1}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px}
    .footer-links a{padding:7px 10px;border-radius:999px;background:#fff;border:1px solid #dbe2ea;color:#334155}
    footer{margin-top:8px;padding:18px 0 26px;background:#fbfbfd;border-top:1px solid #e5e7eb;color:#334155}
    footer .container{display:grid;gap:14px}
    .foot-top{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;align-items:flex-start}
    .foot-top p{margin:0;color:#5b6472;line-height:1.7}
    .float-box{
      position:fixed;right:16px;bottom:18px;z-index:60;display:grid;gap:10px
    }
    .float-box a,.top-btn{
      display:grid;place-items:center;width:48px;height:48px;border-radius:16px;background:#fff;border:1px solid #dbe2ea;box-shadow:var(--shadow2);color:#111827
    }
    .top-btn{cursor:pointer}
    .side-image-row{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .side-image-row img,.square-image img{border-radius:18px;border:1px solid #e5ebf2;box-shadow:var(--shadow2)}
    .note-list{display:grid;gap:10px}
    .note{display:flex;gap:10px;align-items:flex-start;color:#334155;line-height:1.6}
    .dot{width:8px;height:8px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary2));margin-top:9px;flex:0 0 auto}
    .marquee{overflow:hidden;border-radius:18px;background:#0f172a;color:#fff;padding:10px 0}
    .marquee div{display:inline-block;white-space:nowrap;padding-left:100%;animation:mar 26s linear infinite}
    @keyframes mar{from{transform:translateX(0)}to{transform:translateX(-100%)}}
    .reveal{opacity:0;transform:translateY(16px);transition:.7s ease}
    .reveal.show{opacity:1;transform:none}
    .mobile-only{display:none}
    .desktop-only{display:block}
    .anchor-gap{scroll-margin-top:92px}
    .support-box{padding:20px;background:linear-gradient(135deg,#0f172a,#1e293b);color:#fff;border-radius:24px}
    .support-box p{color:#cbd5e1}
    .support-box .btn-outline{background:transparent;border-color:rgba(255,255,255,.2);color:#fff}
    @media (max-width: 980px){
      .hero-grid,.grid-3,.grid-2,.service-grid,.workflow,.price-row,.metric-row,.form-grid,.side-image-row{grid-template-columns:1fr 1fr}
      .hero-main{padding:26px}
      .nav-links{display:none}
      .menu-toggle{display:inline-grid;place-items:center}
      .nav.open .nav-links{
        display:flex;position:absolute;left:16px;right:16px;top:68px;background:#fff;border:1px solid #e5ebf2;border-radius:20px;padding:12px;box-shadow:var(--shadow);flex-direction:column;align-items:flex-start
      }
    }
    @media (max-width: 640px){
      .container{width:min(var(--container),calc(100% - 24px))}
      .hero{padding-top:24px}
      .hero-grid,.grid-3,.grid-2,.service-grid,.workflow,.price-row,.metric-row,.form-grid,.side-image-row{grid-template-columns:1fr}
      .hero-main,.hero-side,.card,.panel,.review,.step,.news-item,.article-card,.form-box{padding:18px}
      .section-title{flex-direction:column;align-items:flex-start}
      .mobile-only{display:block}
      .desktop-only{display:none}
      .foot-top{flex-direction:column}
      .menu-toggle{display:inline-grid}
    }