:root{
      --bg:#fff8f1;
      --panel:#ffffff;
      --panel-2:#fff2e5;
      --line:#f0d7c5;
      --text:#1f2430;
      --muted:#5f6877;
      --brand:#ff6a1a;
      --brand-2:#ff8a2a;
      --brand-3:#ffb15c;
      --shadow:0 18px 40px rgba(189, 88, 19, .12);
      --shadow-2:0 12px 24px rgba(31,36,48,.08);
      --radius:22px;
      --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;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(255,122,38,.18), transparent 28%),
        radial-gradient(circle at 85% 10%, rgba(255,177,92,.18), transparent 22%),
        linear-gradient(180deg, #fffaf5 0%, #fff4ea 48%, #fff8f2 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{max-width:var(--container);margin:0 auto;padding:0 18px}
    .site-header{
      position:sticky;top:0;z-index:50;
      backdrop-filter:blur(14px);
      background:rgba(255,250,245,.84);
      border-bottom:1px solid rgba(240,215,197,.7);
    }
    .nav{
      display:flex;align-items:center;justify-content:space-between;gap:16px;
      min-height:76px;
    }
    .brand{display:flex;align-items:center;gap:12px;font-weight:800}
    .ai-page-logo{width:42px;height:42px;object-fit:contain;border-radius:12px;background:#fff;border:1px solid var(--line);padding:4px;box-shadow:var(--shadow-2)}
    .brand strong{font-size:18px;letter-spacing:.4px}
    .brand span{display:block;font-size:12px;color:var(--muted);font-weight:600}
    .menu-toggle{
      display:none;border:1px solid var(--line);background:var(--panel);color:var(--text);
      border-radius:14px;padding:10px 12px;font-weight:700
    }
    .nav-links{display:flex;flex-wrap:wrap;gap:8px;align-items:center;justify-content:flex-end}
    .nav-links a{
      padding:10px 12px;border-radius:12px;color:var(--muted);font-weight:700;font-size:14px;
      transition:.25s ease;background:transparent
    }
    .nav-links a:hover,.nav-links a.active{color:var(--brand);background:#fff1e5}
    .home-link{
      padding:11px 14px;border-radius:14px;background:linear-gradient(135deg,var(--brand),var(--brand-2));
      color:#fff !important;box-shadow:0 10px 24px rgba(255,106,26,.24)
    }
    .hero{padding:36px 0 24px}
    .hero-grid{
      display:grid;grid-template-columns:1.25fr .75fr;gap:18px;align-items:stretch
    }
    .hero-main,.hero-side,.card,.panel,.faq-item,.review,.article,.step,.service-card,.compare-card,.form-card{
      background:rgba(255,255,255,.9);border:1px solid rgba(240,215,197,.85);border-radius:var(--radius);
      box-shadow:var(--shadow-2)
    }
    .hero-main{
      padding:34px;position:relative;overflow:hidden;background:
        linear-gradient(135deg, rgba(255,255,255,.95), rgba(255,241,229,.96));
    }
    .hero-main:before,.hero-main:after{
      content:"";position:absolute;border-radius:50%;pointer-events:none
    }
    .hero-main:before{width:220px;height:220px;background:radial-gradient(circle, rgba(255,106,26,.18), transparent 68%);right:-60px;top:-50px}
    .hero-main:after{width:180px;height:180px;background:radial-gradient(circle, rgba(255,177,92,.18), transparent 68%);right:80px;bottom:-70px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:#fff1e6;color:#c24a05;font-weight:800;font-size:13px}
    h1{margin:16px 0 14px;font-size:clamp(32px,5vw,54px);line-height:1.08;letter-spacing:-.6px}
    .lead{margin:0;color:var(--muted);font-size:16px;line-height:1.8;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;
      padding:13px 18px;border-radius:14px;font-weight:800;border:1px solid transparent;transition:.25s ease;
      cursor:pointer
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:0 14px 30px rgba(255,106,26,.22)}
    .btn-secondary{background:#fff;border-color:var(--line);color:var(--text)}
    .btn:hover{transform:translateY(-2px)}
    .metric-grid{
      display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:26px
    }
    .metric{padding:16px;border-radius:18px;background:#fff;border:1px solid var(--line)}
    .metric b{display:block;font-size:24px;color:var(--brand);line-height:1.1}
    .metric span{display:block;margin-top:6px;color:var(--muted);font-size:13px;line-height:1.5}
    .hero-side{padding:24px;display:grid;gap:14px}
    .side-item{padding:16px;border-radius:18px;background:linear-gradient(180deg,#fff,#fff7f0);border:1px solid var(--line)}
    .side-item h3{margin:0 0 8px;font-size:16px}
    .side-item p{margin:0;color:var(--muted);line-height:1.7;font-size:14px}
    .section{padding:18px 0 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:14px}
    .section h2{margin:0;font-size:28px}
    .section p.sub{margin:0;color:var(--muted);line-height:1.7;max-width:74ch}
    .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,.service-card,.compare-card,.review,.article,.step,.form-card,.panel{padding:20px}
    .card h3,.service-card h3,.compare-card h3,.review h3,.article h3,.step h3{margin:0 0 10px;font-size:18px}
    .card p,.service-card p,.compare-card p,.review p,.article p,.step p{margin:0;color:var(--muted);line-height:1.8}
    .chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
    .chip{padding:8px 10px;border-radius:999px;background:#fff1e6;border:1px solid #ffd6b5;color:#9e440c;font-size:12px;font-weight:700}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:10px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#47505d;font-weight:700;font-size:13px}
    .timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .step{position:relative}
    .step .num{display:inline-flex;width:34px;height:34px;border-radius:50%;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--brand),var(--brand-3));color:#fff;font-weight:900;margin-bottom:14px}
    .compare-wrap{overflow:auto;border-radius:22px;border:1px solid var(--line);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:14px 16px;text-align:left;border-bottom:1px solid #f3e2d5;vertical-align:top}
    th{background:#fff4ea;color:#8b3f0d;font-size:14px}
    td{color:var(--text);font-size:14px;line-height:1.7}
    .accent{color:var(--brand);font-weight:800}
    .faq-list{display:grid;gap:12px}
    .faq-item summary{
      list-style:none;cursor:pointer;padding:18px 20px;font-weight:800;display:flex;align-items:center;justify-content:space-between;gap:12px
    }
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{content:"＋";color:var(--brand);font-size:20px;line-height:1}
    .faq-item[open] summary:after{content:"－"}
    .faq-item .answer{padding:0 20px 18px;color:var(--muted);line-height:1.8}
    .reviews,.articles,.services,.about-grid,.network-grid,.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .rating{display:flex;align-items:center;gap:10px;margin-top:10px}
    .stars{color:#ff9f1a;letter-spacing:2px;font-size:18px}
    .score{font-weight:900;color:var(--brand)}
    .article .meta{margin-top:12px;color:#a05a2d;font-size:13px;font-weight:700}
    .network-grid .card{min-height:100%}
    .pricing-grid{grid-template-columns:repeat(4,1fr)}
    .price{font-size:28px;font-weight:900;color:var(--brand);margin:8px 0}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .field{display:grid;gap:8px}
    .field label{font-weight:800;font-size:14px}
    .field input,.field select,.field textarea{
      width:100%;padding:13px 14px;border-radius:14px;border:1px solid #e9d5c6;background:#fff;color:var(--text);font:inherit;outline:none
    }
    .field textarea{min-height:120px;resize:vertical}
    .field input:focus,.field select:focus,.field textarea:focus{border-color:#ff9b52;box-shadow:0 0 0 4px rgba(255,106,26,.08)}
    .form-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-top:4px}
    .note{color:var(--muted);font-size:13px;line-height:1.7}
    .floating{
      position:fixed;right:18px;bottom:18px;z-index:60;display:grid;gap:10px
    }
    .float-btn{
      width:54px;height:54px;border-radius:18px;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;
      display:flex;align-items:center;justify-content:center;box-shadow:0 14px 32px rgba(255,106,26,.28);border:none;cursor:pointer;font-size:20px
    }
    .customer-box{
      position:fixed;right:18px;bottom:84px;z-index:60;width:280px;max-width:calc(100vw - 36px);
      display:none;background:#fff;border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow);overflow:hidden
    }
    .customer-box.open{display:block;animation:pop .2s ease}
    .customer-box .head{padding:14px 16px;background:#fff4ea;font-weight:900}
    .customer-box .body{padding:14px 16px;color:var(--muted);line-height:1.7}
    .customer-box img{width:100%;border-radius:16px;border:1px solid var(--line);margin:10px 0 12px}
    footer{
      margin-top:18px;padding:24px 0 30px;background:#1f2430;color:#f4efe8
    }
    footer a{color:#ffd8b4}
    footer .footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:18px;align-items:start}
    footer h3{margin:0 0 12px;font-size:16px;color:#fff}
    footer p,footer li{color:#d7dce3;line-height:1.8;margin:0}
    footer ul{margin:0;padding-left:18px}
    .foot-btm{margin-top:18px;padding-top:18px;border-top:1px solid rgba(255,255,255,.08);color:#c9d0d8;font-size:13px;line-height:1.7}
    .reveal{opacity:0;transform:translateY(18px);transition:.55s ease}
    .reveal.show{opacity:1;transform:none}
    .gallery{
      display:grid;grid-template-columns:repeat(2,1fr);gap:14px
    }
    .media-card{padding:14px;background:#fff;border:1px solid var(--line);border-radius:20px}
    .media-card img{border-radius:14px}
    .center{text-align:center}
    .small{font-size:13px;color:var(--muted)}
    .compact-list{display:grid;gap:10px;margin:0;padding-left:18px;color:var(--muted);line-height:1.8}
    .divider{height:1px;background:linear-gradient(90deg,transparent,var(--line),transparent);margin:14px 0}
    @media (max-width: 980px){
      .hero-grid,.grid-3,.grid-2,.reviews,.articles,.services,.about-grid,.network-grid,.pricing-grid,.timeline,.footer-grid,.gallery{grid-template-columns:1fr 1fr}
      .metric-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media (max-width: 720px){
      .menu-toggle{display:inline-flex}
      .nav-links{
        display:none;position:absolute;left:18px;right:18px;top:78px;flex-direction:column;align-items:stretch;
        padding:12px;background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow)
      }
      .nav-links.open{display:flex}
      .nav-links a{padding:12px 14px}
      .hero-grid,.grid-3,.grid-2,.reviews,.articles,.services,.about-grid,.network-grid,.pricing-grid,.timeline,.footer-grid,.gallery,.form-grid{grid-template-columns:1fr}
      .hero-main{padding:24px}
      .metric-grid{grid-template-columns:1fr 1fr}
      .section h2{font-size:24px}
      h1{font-size:30px}
      .customer-box{right:12px;left:12px;width:auto}
    }