:root{
      --bg:#fff8f1;
      --panel:#ffffff;
      --panel-2:#fff3e7;
      --text:#1f2430;
      --muted:#5e6678;
      --brand:#ff6a1a;
      --brand-2:#ff8a2a;
      --line:#efd8c6;
      --shadow:0 18px 50px rgba(255,106,26,.10);
      --radius:20px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:Arial,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--text);background:linear-gradient(180deg,#fff8f1 0%,#fffdfb 34%,#fff7ef 100%)}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{max-width:var(--container);margin:0 auto;padding:0 20px}
    .topbar,.site-header,.site-footer{width:100%}
    .topbar{background:#fff1e5;border-bottom:1px solid #f3dcc8;color:#8a4e22;font-size:14px}
    .topbar .container{display:flex;justify-content:space-between;gap:14px;padding-top:10px;padding-bottom:10px;align-items:center}
    .topbar .links{display:flex;gap:14px;flex-wrap:wrap}
    .site-header{position:sticky;top:0;z-index:50;background:rgba(255,248,241,.92);backdrop-filter:blur(10px);border-bottom:1px solid rgba(239,216,198,.8)}
    .header-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;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:10px;background:#fff;padding:4px;box-shadow:0 8px 20px rgba(0,0,0,.06)}
    .brand-txt{min-width:0}
    .brand-txt strong{display:block;font-size:18px;letter-spacing:.5px}
    .brand-txt span{display:block;font-size:12px;color:var(--muted);margin-top:3px}
    .nav-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:12px;padding:10px 12px;color:var(--text)}
    .nav{display:flex;align-items:center;gap:14px;flex-wrap:wrap;justify-content:flex-end}
    .nav a{font-size:14px;color:#374151;padding:8px 10px;border-radius:999px;transition:.2s}
    .nav a:hover,.nav a:focus{background:#fff1e5;color:#d65012}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:999px;padding:14px 20px;font-weight:700;cursor:pointer;transition:.25s;white-space:nowrap}
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:0 12px 26px rgba(255,106,26,.24)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 30px rgba(255,106,26,.28)}
    .btn-ghost{background:#fff;border:1px solid var(--line);color:var(--text)}
    .hero{position:relative;overflow:hidden;padding:42px 0 22px}
    .hero::before,.hero::after{content:"";position:absolute;border-radius:50%;background:radial-gradient(circle, rgba(255,138,42,.16), rgba(255,138,42,0) 65%)}
    .hero::before{width:380px;height:380px;right:-120px;top:-100px}
    .hero::after{width:260px;height:260px;left:-120px;bottom:-90px}
    .hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:24px;align-items:stretch}
    .hero-card{background:linear-gradient(180deg, rgba(255,255,255,.9), rgba(255,246,236,.95));border:1px solid rgba(239,216,198,.8);border-radius:28px;box-shadow:var(--shadow)}
    .hero-main{padding:34px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;background:#fff3e7;color:#c24f11;border:1px solid #ffd3af;border-radius:999px;padding:8px 12px;font-size:13px;font-weight:700}
    h1{margin:18px 0 14px;font-size:clamp(30px,4vw,54px);line-height:1.08;letter-spacing:-.02em}
    .lead{margin:0;color:var(--muted);font-size:17px;line-height:1.8;max-width:62ch}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
    .hero-points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:24px}
    .mini-stat{background:#fff;border:1px solid var(--line);border-radius:18px;padding:14px}
    .mini-stat b{display:block;font-size:18px}
    .mini-stat span{display:block;color:var(--muted);font-size:13px;margin-top:4px;line-height:1.5}
    .hero-side{padding:22px;display:flex;flex-direction:column;gap:14px}
    .side-panel{background:#fff;border:1px solid var(--line);border-radius:22px;padding:18px;box-shadow:0 12px 30px rgba(0,0,0,.04)}
    .side-panel h3{margin:0 0 10px;font-size:18px}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:8px 12px;border-radius:999px;background:#fff4ea;border:1px solid #f4d7c1;color:#8d4d24;font-size:13px}
    .section{padding:24px 0}
    .section h2{margin:0 0 14px;font-size:28px;line-height:1.2}
    .section p.section-desc{margin:0 0 18px;color:var(--muted);line-height:1.8}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .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{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:0 10px 28px rgba(31,36,48,.04);transition:.25s}
    .card:hover{transform:translateY(-4px);box-shadow:0 18px 38px rgba(255,106,26,.08)}
    .card h3{margin:0 0 10px;font-size:18px}
    .card p{margin:0;color:var(--muted);line-height:1.7}
    .metric{font-size:28px;font-weight:800;color:var(--brand)}
    .metric small{font-size:14px;color:var(--muted);font-weight:600}
    .table-wrap{overflow-x:auto;background:var(--panel);border:1px solid var(--line);border-radius:20px;box-shadow:0 10px 28px rgba(0,0,0,.04)}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:16px 14px;border-bottom:1px solid #f3e5d8;text-align:left;vertical-align:top}
    th{background:#fff6ee;font-size:14px;color:#7d4321}
    td{color:#334155;line-height:1.7}
    .steps{counter-reset:step}
    .step{position:relative;padding-left:54px}
    .step::before{counter-increment:step;content:counter(step,decimal-leading-zero);position:absolute;left:0;top:0;width:38px;height:38px;border-radius:12px;background:linear-gradient(135deg,var(--brand),#ff9a49);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800}
    .faq details{background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px 18px}
    .faq details+details{margin-top:12px}
    .faq summary{cursor:pointer;font-weight:700;list-style:none}
    .faq summary::-webkit-details-marker{display:none}
    .faq p{margin:12px 0 0;color:var(--muted);line-height:1.8}
    .reviews .card{display:flex;flex-direction:column;gap:12px}
    .stars{color:#f59e0b;letter-spacing:2px;font-size:18px}
    .quote{font-size:15px;line-height:1.8;color:#374151}
    .case-list,.article-list{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .case-item,.article-item{background:linear-gradient(180deg,#fff, #fff8f0);border:1px solid var(--line);border-radius:20px;padding:18px}
    .case-item h3,.article-item h3{margin:0 0 10px}
    .meta{font-size:13px;color:#8b5e3c;margin-bottom:10px}
    .form-wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:16px}
    .form-card form{display:grid;gap:12px}
    label{font-size:14px;font-weight:700;color:#334155}
    input,select,textarea{width:100%;margin-top:8px;border:1px solid #e8d3c1;border-radius:14px;padding:13px 14px;font:inherit;background:#fff;color:var(--text);outline:none;transition:.2s}
    input:focus,select:focus,textarea:focus{border-color:#ff9d5a;box-shadow:0 0 0 4px rgba(255,138,42,.12)}
    textarea{min-height:120px;resize:vertical}
    .form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px}
    .footer-links a{color:#7b4d2d;background:#fff6ee;border:1px solid #f0d8c6;padding:8px 12px;border-radius:999px;font-size:13px}
    .site-footer{margin-top:22px;background:#fff3e7;border-top:1px solid #efd8c6;color:#3b4252}
    .footer-inner{padding:26px 0;display:grid;grid-template-columns:1.2fr .8fr;gap:18px}
    .footer-inner p,.footer-inner a{color:#3b4252}
    .muted{color:var(--muted)}
    .service-net{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .service-net .card{padding:18px}
    .float-tools{position:fixed;right:16px;bottom:16px;z-index:60;display:flex;flex-direction:column;gap:10px}
    .float-tools a,.float-tools button{width:48px;height:48px;border-radius:50%;border:0;background:linear-gradient(135deg,var(--brand),#ff9c49);color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:0 12px 24px rgba(255,106,26,.24);cursor:pointer}
    .backtop{display:none}
    .reveal{opacity:0;transform:translateY(14px);transition:.55s ease}
    .reveal.in{opacity:1;transform:none}
    @media (max-width: 1080px){
      .hero-grid,.form-wrap,.footer-inner{grid-template-columns:1fr}
      .grid-4,.grid-3,.grid-2,.case-list,.article-list,.service-net{grid-template-columns:repeat(2,1fr)}
    }
    @media (max-width: 760px){
      .topbar .container{flex-direction:column;align-items:flex-start}
      .nav-toggle{display:inline-flex}
      .nav{display:none;width:100%;padding:12px 0 2px;justify-content:flex-start}
      .nav.open{display:flex}
      .header-inner{flex-wrap:wrap}
      .hero-main{padding:24px}
      .hero-points,.grid-4,.grid-3,.grid-2,.case-list,.article-list,.service-net,.form-grid{grid-template-columns:1fr}
      .hero-actions{flex-direction:column}
      .btn{width:100%}
      .float-tools{right:12px;bottom:12px}
    }