:root{
      --bg:#f7f8fc;
      --bg2:#eef3ff;
      --card:#ffffff;
      --text:#1f2937;
      --muted:#5b6472;
      --line:#dce3f0;
      --brand:#4f6df5;
      --brand2:#8a5cf6;
      --brand3:#14b8a6;
      --accent:#ff8a5c;
      --shadow:0 16px 40px rgba(31,41,55,.08);
      --radius:22px;
      --radius-sm:16px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;background:
      radial-gradient(circle at top left, rgba(79,109,245,.11), transparent 30%),
      radial-gradient(circle at top right, rgba(20,184,166,.12), transparent 26%),
      linear-gradient(180deg, var(--bg), #fff 58%, #fbfcff 100%);
      color:var(--text);line-height:1.7}
    a{color:var(--brand);text-decoration:none}
    img{display:block;max-width:100%}
    .container{max-width:var(--container);margin:0 auto;padding:0 20px}
    .site-header{position:sticky;top:0;z-index:50;background:rgba(247,248,252,.82);backdrop-filter:blur(14px);border-bottom:1px solid rgba(220,227,240,.8)}
    .nav{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:74px}
    .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;padding:6px;box-shadow:0 8px 20px rgba(79,109,245,.12)}
    .brand-text strong{display:block;font-size:16px;color:#162033}
    .brand-text span{display:block;font-size:12px;color:var(--muted)}
    .nav-links{display:flex;align-items:center;gap:14px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:14px;color:#2b3444;padding:8px 10px;border-radius:999px;transition:.25s}
    .nav-links a:hover{background:rgba(79,109,245,.08);color:var(--brand)}
    .nav-actions{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;white-space:nowrap}
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:0 14px 30px rgba(79,109,245,.23)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 36px rgba(79,109,245,.28)}
    .btn-ghost{background:#fff;color:#233047;border:1px solid var(--line)}
    .btn-ghost:hover{border-color:rgba(79,109,245,.35);color:var(--brand)}
    .menu-toggle{display:none;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 12px}
    .hero{padding:34px 0 28px}
    .hero-grid{display:grid;grid-template-columns:1.22fr .78fr;gap:22px;align-items:stretch}
    .hero-main,.hero-side,.section-card,.info-card,.review-card,.news-card,.faq-item,.panel,.form-card,.timeline-card,.price-card,.service-card,.case-card{background:var(--card);border:1px solid rgba(220,227,240,.95);border-radius:var(--radius);box-shadow:var(--shadow)}
    .hero-main{padding:34px;position:relative;overflow:hidden}
    .hero-main:before{content:"";position:absolute;inset:auto -15% -35% auto;width:360px;height:360px;background:radial-gradient(circle, rgba(79,109,245,.18), transparent 60%);pointer-events:none}
    .hero-kicker{display:inline-flex;align-items:center;gap:8px;background:rgba(79,109,245,.08);color:var(--brand);padding:8px 12px;border-radius:999px;font-size:13px;font-weight:700}
    h1{font-size:clamp(30px,4.6vw,52px);line-height:1.1;margin:14px 0 14px;letter-spacing:-.02em}
    .hero p{margin:0;color:var(--muted);max-width:58ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:22px 0 18px}
    .hero-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:18px}
    .mini-stat{padding:14px 14px 13px;border-radius:18px;background:linear-gradient(180deg,#fff, #f7f9ff);border:1px solid var(--line)}
    .mini-stat strong{display:block;font-size:20px;color:#172033}
    .mini-stat span{font-size:12px;color:var(--muted)}
    .hero-side{padding:20px;display:grid;gap:14px}
    .side-chip{display:flex;justify-content:space-between;align-items:center;padding:14px 16px;border-radius:18px;background:linear-gradient(135deg, rgba(79,109,245,.08), rgba(20,184,166,.08));border:1px solid rgba(79,109,245,.14)}
    .side-chip b{font-size:15px}
    .side-chip small{color:var(--muted)}
    .hero-tags{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:8px 12px;border-radius:999px;background:#f5f7ff;border:1px solid var(--line);color:#334155;font-size:13px}
    .section{padding:18px 0 10px}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:16px;margin-bottom:14px}
    .section-head h2{margin:0;font-size:28px;line-height:1.15}
    .section-head p{margin:0;color:var(--muted);max-width:64ch}
    .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
    .section-card,.service-card,.case-card,.news-card,.review-card,.timeline-card,.price-card,.panel,.form-card{padding:20px}
    .icon-badge{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg, rgba(79,109,245,.12), rgba(138,92,246,.12));color:var(--brand);font-weight:800;margin-bottom:12px}
    .service-card h3,.case-card h3,.review-card h3,.news-card h3,.panel h3,.form-card h3,.price-card h3{margin:0 0 8px;font-size:18px}
    .muted{color:var(--muted)}
    .compare-wrap{overflow:auto;border-radius:22px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow)}
    table{width:100%;border-collapse:collapse;min-width:820px}
    th,td{padding:15px 14px;border-bottom:1px solid #edf1f7;text-align:left;vertical-align:top}
    th{background:#f7f9ff;font-size:14px;color:#334155}
    td{font-size:14px;color:#334155}
    .good{color:#0f766e;font-weight:700}
    .warn{color:#b45309;font-weight:700}
    .timeline{display:grid;gap:12px}
    .timeline-item{display:grid;grid-template-columns:90px 1fr;gap:12px;align-items:start;padding:14px 0;border-bottom:1px dashed #e7ebf3}
    .timeline-item:last-child{border-bottom:0;padding-bottom:0}
    .time{font-weight:800;color:var(--brand)}
    .price-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .price-card .price{font-size:30px;font-weight:900;color:#132033;margin:4px 0 8px}
    .faq-list{display:grid;gap:12px}
    .faq-item summary{list-style:none;cursor:pointer;padding:18px 20px;font-weight:700}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item p{margin:0;padding:0 20px 18px;color:var(--muted)}
    .review-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .review-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:14px;font-size:13px;color:var(--muted)}
    .stars{color:#f59e0b;letter-spacing:2px;font-size:14px}
    .article-list{display:grid;gap:12px}
    .article-item{display:flex;justify-content:space-between;gap:14px;padding:14px 16px;border:1px solid var(--line);border-radius:18px;background:#fbfcff}
    .article-item span{color:var(--muted);font-size:13px;white-space:nowrap}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag-cloud a{padding:10px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#344155;font-size:13px}
    .contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:16px;align-items:start}
    form{display:grid;gap:12px}
    .field{display:grid;gap:6px}
    label{font-size:14px;font-weight:700;color:#243044}
    input,select,textarea{width:100%;border:1px solid #d9e1ef;border-radius:14px;background:#fff;color:#1f2937;padding:12px 14px;font:inherit;outline:none;transition:.2s}
    input:focus,select:focus,textarea:focus{border-color:rgba(79,109,245,.7);box-shadow:0 0 0 4px rgba(79,109,245,.1)}
    textarea{min-height:120px;resize:vertical}
    .footer{margin-top:18px;background:#0f172a;color:#e5eefc;padding:24px 0 18px}
    .footer a{color:#9cc2ff}
    .footer .muted{color:#b8c2d8}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:18px;align-items:start}
    .footer small{display:block;margin-top:12px;color:#9fb0cf}
    .float-tools{position:fixed;right:18px;bottom:18px;display:grid;gap:10px;z-index:60}
    .float-tools a,.float-tools button{width:48px;height:48px;border-radius:50%;display:grid;place-items:center;border:0;box-shadow:0 14px 28px rgba(15,23,42,.18);cursor:pointer}
    .float-tools a{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff}
    .float-tools button{background:#fff;color:#243044;border:1px solid var(--line)}
    .mobile-panel{display:none}
    .scroll-reveal{opacity:0;transform:translateY(12px);transition:.6s ease}
    .scroll-reveal.show{opacity:1;transform:none}
    .center{text-align:center}
    .inline-list{padding-left:18px;margin:0;color:var(--muted)}
    .service-network{display:flex;flex-wrap:wrap;gap:10px}
    .service-network .tag{background:#fff}
    @media (max-width: 980px){
      .hero-grid,.grid-3,.grid-2,.review-grid,.price-grid,.contact-grid,.footer-grid{grid-template-columns:1fr}
      .hero-points{grid-template-columns:1fr}
      .nav-links,.nav-actions{display:none}
      .menu-toggle{display:inline-grid;place-items:center}
      .mobile-panel{display:block;max-height:0;overflow:hidden;transition:max-height .32s ease;background:#fff;border-bottom:1px solid var(--line)}
      .mobile-panel.open{max-height:520px}
      .mobile-panel .container{padding:14px 20px 18px}
      .mobile-panel a{display:block;padding:11px 0;color:#253146;border-bottom:1px solid #eef2f8}
      .mobile-panel a:last-child{border-bottom:0}
      .section-head{align-items:start;flex-direction:column}
      .timeline-item{grid-template-columns:1fr}
      table{min-width:760px}
    }