:root{
      --bg:#f7f7fb;
      --panel:#ffffff;
      --panel-2:#fff6ee;
      --ink:#1f2430;
      --muted:#5d6576;
      --line:#e7e8ef;
      --brand:#ff4d6d;
      --brand-2:#ffb703;
      --brand-3:#6c63ff;
      --shadow:0 18px 45px rgba(28, 35, 56, .08);
      --shadow-soft:0 10px 24px rgba(28, 35, 56, .06);
      --radius:20px;
      --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(--ink);
      background:
        radial-gradient(circle at 10% 8%, rgba(255,77,109,.10), transparent 20%),
        radial-gradient(circle at 90% 12%, rgba(108,99,255,.10), transparent 18%),
        linear-gradient(180deg, #fff9f4 0%, #f7f7fb 26%, #f6f8fd 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--container), calc(100% - 32px)); margin:0 auto}
    .section{padding:72px 0}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      padding:8px 14px;border-radius:999px;background:rgba(255,77,109,.10);
      color:#b51f3e;font-weight:700;font-size:13px;letter-spacing:.02em
    }
    .section h2{font-size:30px;line-height:1.15;margin:14px 0 10px}
    .section p.lead{color:var(--muted);max-width:820px;line-height:1.8;margin:0}
    header{
      position:sticky;top:0;z-index:50;
      backdrop-filter:saturate(150%) blur(16px);
      background:rgba(255,255,255,.78);
      border-bottom:1px solid rgba(231,232,239,.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:var(--shadow-soft)}
    .brand strong{display:block;font-size:16px}
    .brand span{display:block;font-size:12px;color:var(--muted);margin-top:2px}
    .nav-toggle{
      display:none;border:1px solid var(--line);background:#fff;border-radius:12px;padding:10px 12px;color:var(--ink)
    }
    .nav-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:14px;color:#374151;font-weight:600}
    .nav-links a:hover{color:var(--brand)}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:10px;
      border:none;border-radius:14px;padding:13px 18px;font-weight:700;cursor:pointer;
      transition:.2s ease;box-shadow:var(--shadow-soft)
    }
    .btn:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
    .btn-primary{background:linear-gradient(135deg,var(--brand),#ff7a59);color:#fff}
    .btn-secondary{background:#fff;color:var(--ink);border:1px solid var(--line)}
    .hero{padding:34px 0 16px}
    .hero-wrap{
      display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:stretch
    }
    .hero-main,.hero-side,.card,.panel{
      background:rgba(255,255,255,.86);border:1px solid rgba(231,232,239,.95);
      border-radius:var(--radius);box-shadow:var(--shadow)
    }
    .hero-main{padding:34px}
    .hero h1{font-size:44px;line-height:1.08;margin:16px 0 14px;letter-spacing:-.02em}
    .hero .sub{font-size:18px;line-height:1.8;color:#4b5563;max-width:640px;margin:0 0 22px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:26px 0 22px}
    .hero-badges{display:flex;flex-wrap:wrap;gap:10px}
    .chip{
      display:inline-flex;align-items:center;gap:8px;padding:10px 12px;border-radius:999px;
      background:linear-gradient(135deg, rgba(255,183,3,.15), rgba(108,99,255,.10));
      color:#374151;font-size:13px;font-weight:700;border:1px solid rgba(255,183,3,.20)
    }
    .hero-side{padding:24px;background:linear-gradient(180deg, rgba(255,77,109,.08), rgba(255,255,255,.94))}
    .hero-side h3{margin:0 0 14px;font-size:18px}
    .mini-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .mini{
      padding:16px;border-radius:18px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-soft)
    }
    .mini b{display:block;font-size:22px;color:#111827}
    .mini span{display:block;margin-top:6px;color:var(--muted);font-size:13px;line-height:1.5}
    .stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:18px}
    .stat{padding:20px}
    .stat b{font-size:28px;display:block}
    .stat span{color:var(--muted);font-size:14px}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
    .card,.panel{padding:24px}
    .card h3,.panel h3{margin:0 0 10px;font-size:18px}
    .card p,.panel p,.card li,.panel li{color:var(--muted);line-height:1.75}
    .service-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .service{
      padding:18px;border-radius:18px;background:linear-gradient(180deg,#fff,#fff8f2);
      border:1px solid var(--line)
    }
    .service strong{display:block;margin-bottom:8px}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:10px 13px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;font-weight:600;color:#344054}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .step{padding:20px;position:relative;overflow:hidden}
    .step::after{
      content:"";position:absolute;inset:auto -25% -35% auto;width:120px;height:120px;border-radius:50%;
      background:radial-gradient(circle, rgba(255,77,109,.12), transparent 66%);
    }
    .step .num{font-size:14px;font-weight:800;color:#b51f3e}
    .step h3{margin:10px 0 8px}
    .compare-wrap{overflow:auto;border:1px solid var(--line);border-radius:18px;background:#fff;box-shadow:var(--shadow-soft)}
    table{width:100%;border-collapse:collapse;min-width:860px}
    th,td{padding:16px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
    th{background:#fff8f2;font-size:14px}
    td{color:#374151;line-height:1.7}
    .score{
      display:inline-flex;align-items:center;gap:8px;padding:10px 12px;border-radius:12px;
      background:linear-gradient(135deg, rgba(255,183,3,.14), rgba(255,77,109,.10));font-weight:700
    }
    .testimonial{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .quote{padding:22px;position:relative}
    .quote .role{color:#b51f3e;font-weight:700;font-size:13px;margin-bottom:10px}
    .quote p{margin:0 0 14px}
    .quote .name{font-weight:700;color:#111827}
    .case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .case .media{aspect-ratio:16/9;border-radius:16px;overflow:hidden;background:#f2f4f8;margin-bottom:14px;border:1px solid var(--line)}
    .case .media img{width:100%;height:100%;object-fit:cover}
    .list-articles{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .article-item{
      padding:18px;border-radius:18px;border:1px solid var(--line);background:#fff;display:flex;justify-content:space-between;gap:14px
    }
    .article-item small{display:block;color:#8a90a2;margin-top:8px}
    .form-wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:18px;align-items:start}
    form{display:grid;gap:14px}
    .field{display:grid;gap:8px}
    label{font-weight:700;font-size:14px}
    input,select,textarea{
      width:100%;padding:13px 14px;border-radius:14px;border:1px solid var(--line);background:#fff;
      font:inherit;color:var(--ink);outline:none;transition:.2s ease
    }
    input:focus,select:focus,textarea:focus{border-color:rgba(255,77,109,.55);box-shadow:0 0 0 4px rgba(255,77,109,.10)}
    textarea{min-height:120px;resize:vertical}
    .faq details{
      background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px 18px;box-shadow:var(--shadow-soft)
    }
    .faq details+details{margin-top:12px}
    .faq summary{cursor:pointer;font-weight:700;list-style:none}
    .faq summary::-webkit-details-marker{display:none}
    .faq .answer{color:var(--muted);line-height:1.8;padding-top:10px}
    .footer-links{display:flex;flex-wrap:wrap;gap:12px}
    footer{
      padding:28px 0 34px;border-top:1px solid var(--line);background:#fff;color:#1f2937
    }
    footer a{color:#1f2937}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:18px;align-items:start}
    .contact-card{display:grid;grid-template-columns:120px 1fr;gap:16px;align-items:center}
    .qrcode{
      width:120px;height:120px;border-radius:16px;object-fit:cover;border:1px solid var(--line);background:#fff
    }
    .floating{
      position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px
    }
    .floating a,.floating button{
      display:inline-flex;align-items:center;justify-content:center;padding:12px 14px;border-radius:14px;border:none;
      box-shadow:var(--shadow-soft);font-weight:700;cursor:pointer
    }
    .floating .service-btn{background:linear-gradient(135deg,#ff4d6d,#ff7a59);color:#fff}
    .floating .top-btn{background:#fff;color:#1f2937;border:1px solid var(--line)}
    .mobile-only{display:none}
    .supply{
      display:grid;grid-template-columns:repeat(5,1fr);gap:12px
    }
    .supply .node{padding:16px;text-align:center}
    .price-row{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .price{padding:22px}
    .price b{font-size:26px}
    .tone{color:var(--muted);line-height:1.75}
    .scroll-hint{font-size:13px;color:var(--muted);margin-top:10px}
    .reveal{opacity:0;transform:translateY(18px);transition:.7s ease}
    .reveal.show{opacity:1;transform:none}
    @media (max-width: 1024px){
      .hero-wrap,.form-wrap,.footer-grid,.grid-3,.testimonial,.case-grid,.price-row,.steps,.stats,.supply{grid-template-columns:1fr 1fr}
      .footer-grid{grid-template-columns:1fr}
      .hero h1{font-size:36px}
    }
    @media (max-width: 720px){
      .nav-toggle{display:inline-flex}
      .nav-links{
        display:none;position:absolute;left:16px;right:16px;top:70px;padding:16px;background:#fff;border:1px solid var(--line);
        border-radius:18px;box-shadow:var(--shadow);flex-direction:column;align-items:flex-start
      }
      .nav-links.open{display:flex}
      .hero-wrap,.form-wrap,.grid-3,.grid-2,.testimonial,.case-grid,.list-articles,.stats,.steps,.price-row,.service-list,.mini-grid,.supply{grid-template-columns:1fr}
      .hero-main{padding:24px}
      .hero h1{font-size:30px}
      .section{padding:56px 0}
      .mobile-only{display:block}
      .desktop-only{display:none}
      .contact-card{grid-template-columns:1fr}
      .floating{right:12px;bottom:12px}
    }