:root{
      --bg:#f6f8ff;
      --bg2:#eef5ff;
      --card:#ffffff;
      --text:#162033;
      --muted:#5c6780;
      --line:#dfe7fb;
      --primary:#6a5cff;
      --primary2:#23c6d9;
      --accent:#ff7cc8;
      --shadow:0 18px 50px rgba(35, 56, 120, .12);
      --shadow2:0 10px 24px rgba(106, 92, 255, .16);
      --radius:22px;
      --radius2:16px;
      --max: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;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(106,92,255,.10), transparent 28%),
        radial-gradient(circle at top right, rgba(35,198,217,.10), transparent 24%),
        linear-gradient(180deg, #fbfcff 0%, var(--bg) 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--max), calc(100% - 32px)); margin:0 auto}
    .topbar{
      position:sticky;top:0;z-index:40;
      backdrop-filter:blur(14px);
      background:rgba(247,249,255,.78);
      border-bottom:1px solid rgba(223,231,251,.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;border-radius:12px;object-fit:cover;background:#fff;box-shadow:0 8px 22px rgba(106,92,255,.12)}
    .brand h2{margin:0;font-size:18px;line-height:1.2}
    .brand p{margin:3px 0 0;color:var(--muted);font-size:12px}
    .nav-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
    .nav-links a{font-size:14px;color:#24314f}
    .nav-links a:hover{color:var(--primary)}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      padding:12px 18px;border-radius:999px;border:1px solid transparent;
      font-weight:700;transition:.25s ease;cursor:pointer;
      box-shadow:0 8px 20px rgba(0,0,0,.05);
    }
    .btn-primary{background:linear-gradient(135deg,var(--primary),#8a7cff);color:#fff;box-shadow:var(--shadow2)}
    .btn-primary:hover{transform:translateY(-1px);filter:saturate(1.05)}
    .btn-ghost{background:#fff;border-color:var(--line);color:#26324c}
    .btn-ghost:hover{border-color:#b8c6ee;color:var(--primary)}
    .menu-toggle{display:none;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 12px;color:#26324c}
    .hero{
      padding:38px 0 24px;
    }
    .hero-grid{
      display:grid;grid-template-columns:1.15fr .85fr;gap:22px;align-items:stretch;
    }
    .hero-main,.hero-side,.panel,.card,.faq-item,.review,.form-wrap,.table-wrap,.timeline,.compare-box{
      background:rgba(255,255,255,.86);
      border:1px solid rgba(223,231,251,.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:50%;
      pointer-events:none;
      filter:blur(2px);
    }
    .hero-main:before{width:240px;height:240px;background:radial-gradient(circle, rgba(106,92,255,.18), transparent 68%);right:-80px;top:-70px}
    .hero-main:after{width:180px;height:180px;background:radial-gradient(circle, rgba(35,198,217,.18), transparent 66%);left:-70px;bottom:-60px}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      padding:8px 12px;border-radius:999px;
      background:linear-gradient(135deg, rgba(106,92,255,.10), rgba(35,198,217,.10));
      color:#4338ca;font-weight:700;font-size:13px;
    }
    h1{margin:18px 0 14px;font-size:clamp(32px, 5vw, 56px);line-height:1.08;letter-spacing:-.02em}
    .lead{margin:0;max-width:52ch;color:var(--muted);font-size:16px;line-height:1.8}
    .hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin:24px 0 18px}
    .hero-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:18px}
    .mini-stat{
      padding:14px;border-radius:18px;background:linear-gradient(180deg,#fff, #f8fbff);
      border:1px solid var(--line)
    }
    .mini-stat strong{display:block;font-size:18px}
    .mini-stat span{display:block;color:var(--muted);font-size:12px;margin-top:6px;line-height:1.5}
    .hero-side{padding:22px;display:grid;gap:14px}
    .side-badge{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 16px;border-radius:18px;background:linear-gradient(135deg,rgba(106,92,255,.12),rgba(35,198,217,.10));}
    .side-badge strong{font-size:15px}
    .side-badge small{display:block;color:var(--muted);margin-top:4px}
    .quick-list{display:grid;gap:10px}
    .quick-item{padding:12px 14px;border-radius:16px;background:#fff;border:1px solid var(--line);color:#25314d;font-size:14px;line-height:1.5}
    section{padding:18px 0}
    .section-title{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:14px}
    .section-title h2{margin:0;font-size:28px}
    .section-title p{margin:0;color:var(--muted);max-width:60ch;line-height:1.7}
    .grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
    .card{padding:18px}
    .card h3{margin:10px 0 8px;font-size:18px}
    .card p,.card li{color:var(--muted);line-height:1.7}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:10px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;color:#31405f}
    .panel{padding:18px}
    .steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .step{padding:18px;border-radius:20px;background:linear-gradient(180deg,#fff, #f7faff);border:1px solid var(--line);position:relative}
    .step .no{width:34px;height:34px;border-radius:12px;display:grid;place-items:center;background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;font-weight:800;margin-bottom:12px}
    .table-wrap{padding:18px;overflow:auto}
    table{width:100%;border-collapse:separate;border-spacing:0;min-width:760px}
    th,td{padding:14px 12px;border-bottom:1px solid var(--line);vertical-align:top;text-align:left}
    th{font-size:14px;color:#23304b;background:#f9fbff;position:sticky;top:0}
    td{color:#41506d;line-height:1.7;font-size:14px}
    .highlight{color:#0f766e;font-weight:700}
    .rating{font-size:18px;font-weight:800;color:#4f46e5}
    .timeline{padding:18px}
    .timeline-list{display:grid;gap:12px}
    .timeline-item{display:grid;grid-template-columns:auto 1fr;gap:12px;padding:14px;border-radius:16px;background:#fff;border:1px solid var(--line)}
    .timeline-item .dot{width:12px;height:12px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--accent));margin-top:7px;box-shadow:0 0 0 5px rgba(106,92,255,.08)}
    .reviews,.articles,.faq-grid,.service-grid,.industry-grid,.network-grid,.compare-grid,.faq-layout{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
    .review cite{font-style:normal;font-weight:800}
    .stars{color:#f59e0b;letter-spacing:2px}
    .faq-item summary{
      list-style:none;cursor:pointer;padding:18px;font-weight:700;display:flex;justify-content:space-between;gap:16px;align-items:center
    }
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item .faq-content{padding:0 18px 18px;color:var(--muted);line-height:1.8}
    .form-wrap{padding:20px}
    .form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .field{display:grid;gap:8px}
    .field label{font-size:14px;font-weight:700;color:#273350}
    input,select,textarea{
      width:100%;padding:13px 14px;border-radius:14px;border:1px solid #d7e0f2;background:#fff;color:var(--text);
      font:inherit;outline:none;transition:.2s ease
    }
    input:focus,select:focus,textarea:focus{border-color:#8a7cff;box-shadow:0 0 0 4px rgba(106,92,255,.12)}
    textarea{min-height:120px;resize:vertical}
    .submit-row{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-top:8px}
    .footer{
      margin-top:20px;padding:22px 0 26px;border-top:1px solid rgba(223,231,251,.95);
      background:linear-gradient(180deg, rgba(255,255,255,.65), rgba(245,248,255,.9));
      color:#24314f;
    }
    .footer a{color:#3245b8}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:16px}
    .contact-box,.article-card,.network-card,.compare-card,.service-card,.industry-card{
      padding:18px;border-radius:20px;background:#fff;border:1px solid var(--line);box-shadow:0 8px 22px rgba(34,48,93,.06)
    }
    .contact-list{display:grid;gap:10px;color:var(--muted)}
    .contact-list strong{color:var(--text)}
    .floating{
      position:fixed;right:16px;bottom:16px;z-index:50;display:grid;gap:10px
    }
    .floating a,.floating button{
      width:52px;height:52px;border-radius:16px;border:1px solid var(--line);background:#fff;display:grid;place-items:center;
      box-shadow:var(--shadow);cursor:pointer;color:#273350
    }
    .backtop{display:none}
    .mobile-panel{display:none}
    .scroll-animate{opacity:0;transform:translateY(18px);transition:.7s ease}
    .scroll-animate.in{opacity:1;transform:none}
    .muted{color:var(--muted)}
    .inline-links{display:flex;flex-wrap:wrap;gap:10px}
    .inline-links a{padding:10px 12px;border-radius:12px;background:#fff;border:1px solid var(--line);font-size:14px}
    .image-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
    .image-strip img{border-radius:18px;border:1px solid var(--line);box-shadow:var(--shadow);width:100%;height:auto}
    @media (max-width: 980px){
      .hero-grid,.grid-4,.grid-3,.steps,.reviews,.articles,.faq-grid,.service-grid,.industry-grid,.network-grid,.compare-grid,.faq-layout,.footer-grid,.image-strip{grid-template-columns:1fr 1fr}
      .hero-main{padding:26px}
      .nav-links{display:none}
      .menu-toggle{display:inline-flex}
      .mobile-panel{display:none;padding:0 0 14px}
      .mobile-panel.open{display:block}
      .mobile-panel .panel-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;padding:12px 0 0}
      .panel-links a{padding:12px;border-radius:14px;background:#fff;border:1px solid var(--line);font-size:14px;text-align:center}
    }
    @media (max-width: 640px){
      .container{width:min(var(--max), calc(100% - 24px))}
      .hero-grid,.grid-4,.grid-3,.steps,.reviews,.articles,.faq-grid,.service-grid,.industry-grid,.network-grid,.compare-grid,.faq-layout,.footer-grid,.image-strip,.form-grid,.hero-points{grid-template-columns:1fr}
      .hero{padding-top:22px}
      h1{font-size:32px}
      .section-title{flex-direction:column;align-items:flex-start}
      .nav{padding:12px 0}
      .brand h2{font-size:16px}
      .brand p{display:none}
      .hero-main,.hero-side,.panel,.card,.faq-item,.review,.form-wrap,.table-wrap,.timeline,.compare-box{border-radius:20px}
      .floating{right:12px;bottom:12px}
      .floating a,.floating button{width:48px;height:48px;border-radius:14px}
      .mobile-panel .panel-links{grid-template-columns:1fr}
    }