:root{
      --bg:#fff8f4;
      --bg2:#fff2ec;
      --card:#ffffff;
      --text:#201915;
      --muted:#6f5d56;
      --line:#f0ddd5;
      --brand:#d91f26;
      --brand2:#ff5a3d;
      --brand3:#ffb199;
      --shadow:0 18px 40px rgba(170, 55, 32, .12);
      --shadow2:0 10px 24px rgba(217,31,38,.14);
      --radius:22px;
      --radius2:16px;
      --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;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(255,90,61,.12), transparent 28%),
        radial-gradient(circle at top right, rgba(217,31,38,.10), transparent 22%),
        linear-gradient(180deg, var(--bg) 0%, #fff 32%, #fff8f4 100%);
      line-height:1.7;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(100% - 32px, var(--container)); margin:0 auto}
    .site-header{
      position:sticky;top:0;z-index:30;
      backdrop-filter: blur(12px);
      background:rgba(255,248,244,.84);
      border-bottom:1px solid rgba(240,221,213,.9);
    }
    .nav{
      display:flex;align-items:center;justify-content:space-between;gap:18px;
      min-height:76px;
    }
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .brand .ai-page-logo{width:42px;height:42px;object-fit:contain;flex:0 0 auto}
    .brand h1{font-size:18px;line-height:1.15;margin:0;color:#241916;font-weight:800;letter-spacing:.2px}
    .brand p{margin:2px 0 0;color:var(--muted);font-size:12px}
    .nav-toggle{
      display:none;border:1px solid var(--line);background:#fff;border-radius:12px;padding:10px 12px;color:var(--text);
    }
    .nav-links{display:flex;align-items:center;gap:10px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{
      padding:9px 12px;border-radius:999px;color:#4b3a33;font-size:14px;font-weight:600;
      transition:.2s ease;background:transparent;
    }
    .nav-links a:hover,.nav-links a:focus-visible{background:#fff;color:var(--brand);box-shadow:0 8px 22px rgba(217,31,38,.10)}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      padding:13px 18px;border-radius:14px;font-weight:700;border:1px solid transparent;
      transition:.2s ease;cursor:pointer;
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:var(--shadow2)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 30px rgba(217,31,38,.22)}
    .btn-ghost{background:#fff;border-color:var(--line);color:#3a2923}
    .btn-ghost:hover{border-color:#f1b6a4;color:var(--brand);transform:translateY(-2px)}
    .hero{
      padding:30px 0 18px;
    }
    .hero-wrap{
      position:relative;
      overflow:hidden;
      border:1px solid rgba(240,221,213,.85);
      border-radius:28px;
      background:
        linear-gradient(135deg, rgba(217,31,38,.98), rgba(255,90,61,.94) 55%, rgba(255,176,153,.98)),
        #d91f26;
      color:#fff;
      box-shadow:0 22px 50px rgba(217,31,38,.20);
    }
    .hero-wrap::before,.hero-wrap::after{
      content:"";position:absolute;border-radius:50%;pointer-events:none
    }
    .hero-wrap::before{width:360px;height:360px;right:-120px;top:-120px;background:radial-gradient(circle, rgba(255,255,255,.24), transparent 62%)}
    .hero-wrap::after{width:280px;height:280px;left:-120px;bottom:-120px;background:radial-gradient(circle, rgba(255,255,255,.15), transparent 62%)}
    .hero-inner{
      position:relative;
      display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:center;
      padding:38px;
    }
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:7px 12px;border-radius:999px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.18);font-size:13px;font-weight:700}
    .hero h2{
      margin:16px 0 12px;font-size:clamp(32px,4.5vw,58px);line-height:1.05;letter-spacing:-.02em
    }
    .hero p{margin:0;color:rgba(255,255,255,.92);font-size:16px;max-width:62ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
    .hero .btn{min-width:150px}
    .hero-card{
      background:rgba(255,255,255,.13);border:1px solid rgba(255,255,255,.18);border-radius:24px;padding:22px;
      box-shadow:inset 0 1px 0 rgba(255,255,255,.14)
    }
    .mini-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
    .mini{
      background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.12);border-radius:18px;padding:14px
    }
    .mini strong{display:block;font-size:18px;margin-bottom:4px}
    .mini span{font-size:13px;color:rgba(255,255,255,.84)}
    .section{padding:22px 0}
    .section-title{display:flex;justify-content:space-between;gap:18px;align-items:end;margin-bottom:16px}
    .section-title h3{margin:0;font-size:clamp(24px,3vw,34px);line-height:1.15}
    .section-title p{margin:0;color:var(--muted);max-width:58ch}
    .grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
    .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}
    .card{
      background:var(--card);border:1px solid rgba(240,221,213,.9);border-radius:var(--radius);
      box-shadow:var(--shadow);padding:22px;transition:transform .22s ease, box-shadow .22s ease, border-color .22s ease;
    }
    .card:hover{transform:translateY(-4px);box-shadow:0 22px 50px rgba(170,55,32,.14);border-color:#efc2b3}
    .metric{
      display:flex;flex-direction:column;gap:10px;min-height:148px;justify-content:space-between
    }
    .metric .num{font-size:34px;font-weight:900;color:var(--brand)}
    .metric .label{font-weight:800}
    .metric .desc{color:var(--muted);font-size:14px}
    .pill-row{display:flex;flex-wrap:wrap;gap:10px}
    .pill{
      display:inline-flex;align-items:center;padding:8px 12px;border-radius:999px;background:#fff4f0;border:1px solid #ffd7cb;
      color:#8c3b2a;font-size:13px;font-weight:600
    }
    .service-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .service-item{padding:18px;border-radius:18px;background:linear-gradient(180deg,#fff, #fff9f6);border:1px solid #f2dfd7}
    .service-item h4{margin:0 0 8px;font-size:18px}
    .service-item p{margin:0;color:var(--muted);font-size:14px}
    .timeline{display:grid;gap:12px}
    .step{display:grid;grid-template-columns:54px 1fr;gap:14px;align-items:start;padding:18px;border-radius:18px;background:#fff;border:1px solid #f1e0d8}
    .step .idx{width:54px;height:54px;border-radius:16px;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;display:grid;place-items:center;font-weight:900;box-shadow:var(--shadow2)}
    .step h4{margin:0 0 6px}
    .step p{margin:0;color:var(--muted)}
    .table-wrap{overflow:auto;border:1px solid #efddd5;border-radius:20px;background:#fff;box-shadow:var(--shadow)}
    table{width:100%;border-collapse:collapse;min-width:780px}
    th,td{padding:16px 14px;border-bottom:1px solid #f3e5df;text-align:left;vertical-align:top}
    th{background:#fff7f4;color:#4a342d;font-size:14px}
    tr:last-child td{border-bottom:none}
    .score{
      display:inline-flex;align-items:center;gap:8px;padding:10px 14px;border-radius:999px;background:#fff3ef;border:1px solid #ffd8cb;color:#a92a17;font-weight:800
    }
    .rating-box{display:grid;gap:14px}
    .stars{color:#ff9c2f;font-size:22px;letter-spacing:2px}
    .faq details{
      background:#fff;border:1px solid #f1dfd7;border-radius:18px;padding:16px 18px;box-shadow:var(--shadow);transition:all .2s ease
    }
    .faq details+details{margin-top:12px}
    .faq summary{cursor:pointer;font-weight:800;list-style:none}
    .faq summary::-webkit-details-marker{display:none}
    .faq summary::after{content:"+";float:right;color:var(--brand);font-size:22px;line-height:1}
    .faq details[open] summary::after{content:"−"}
    .faq p{margin:12px 0 0;color:var(--muted)}
    .review-card{display:flex;flex-direction:column;gap:12px}
    .review-top{display:flex;align-items:center;justify-content:space-between;gap:12px}
    .avatar{
      width:42px;height:42px;border-radius:14px;background:linear-gradient(135deg,#ffd3c5,#ff8d74);display:grid;place-items:center;font-weight:900;color:#7c2418
    }
    .review-card .role{font-weight:800}
    .review-card .text{margin:0;color:var(--muted)}
    .tags{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:8px 12px;border-radius:999px;background:#fff;border:1px solid #f0ddd5;color:#563c33;font-size:13px}
    .article-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .article{
      display:flex;flex-direction:column;gap:12px
    }
    .article .meta{color:var(--muted);font-size:13px}
    .article h4{margin:0;font-size:18px}
    .article p{margin:0;color:var(--muted)}
    .form-wrap{display:grid;grid-template-columns:1fr .92fr;gap:16px;align-items:start}
    form{display:grid;gap:12px}
    .field{display:grid;gap:8px}
    label{font-weight:700;font-size:14px}
    input,select,textarea{
      width:100%;border:1px solid #e8d6cd;background:#fff;border-radius:14px;padding:13px 14px;
      font:inherit;color:var(--text);outline:none;transition:border-color .2s ease, box-shadow .2s ease
    }
    input:focus,select:focus,textarea:focus{border-color:#ff9b84;box-shadow:0 0 0 4px rgba(255,90,61,.12)}
    textarea{min-height:124px;resize:vertical}
    .sidebox{display:grid;gap:14px}
    .qrcode{
      display:flex;align-items:center;gap:14px;padding:16px;border-radius:18px;background:#fff7f4;border:1px solid #f1ddd4
    }
    .qrcode img{width:104px;height:104px;object-fit:cover;border-radius:14px;border:1px solid #edd5cb}
    .footer{
      margin-top:6px;padding:26px 0 20px;border-top:1px solid #efddd5;background:#fff;
      color:#4d3a33
    }
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:16px}
    .footer a{color:#5b342b}
    .footer a:hover{color:var(--brand)}
    .copyright{margin-top:18px;padding-top:14px;border-top:1px solid #f2e2da;color:#7a655d;font-size:13px}
    .floating{
      position:fixed;right:16px;bottom:16px;z-index:40;display:grid;gap:10px
    }
    .float-btn{
      width:48px;height:48px;border-radius:16px;display:grid;place-items:center;background:linear-gradient(135deg,var(--brand),var(--brand2));
      color:#fff;box-shadow:0 14px 30px rgba(217,31,38,.22);border:none;cursor:pointer
    }
    .float-link{display:grid;place-items:center;width:48px;height:48px;border-radius:16px;background:#fff;border:1px solid #f0ddd5;color:var(--brand);box-shadow:var(--shadow)}
    .reveal{opacity:0;transform:translateY(18px);transition:all .65s ease}
    .reveal.show{opacity:1;transform:translateY(0)}
    .hero-badge{display:grid;gap:10px;margin-top:18px}
    .hero-badge .stats{display:flex;flex-wrap:wrap;gap:10px}
    .stats span{padding:9px 12px;border-radius:999px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.16);font-size:13px}
    .pricing{
      display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px
    }
    .price{
      background:linear-gradient(180deg,#fff, #fff8f5);border:1px solid #f1ddd5;border-radius:22px;padding:22px;box-shadow:var(--shadow)
    }
    .price strong{display:block;font-size:28px;color:var(--brand);margin:8px 0}
    .price ul{padding-left:18px;margin:12px 0 0;color:var(--muted)}
    .network{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px}
    .network .tag{text-align:center}
    @media (max-width: 1024px){
      .hero-inner,.form-wrap,.footer-grid{grid-template-columns:1fr}
      .grid-4,.grid-3,.grid-2,.pricing,.article-list,.network{grid-template-columns:repeat(2,minmax(0,1fr))}
    }
    @media (max-width: 760px){
      .nav{min-height:68px}
      .nav-toggle{display:inline-flex}
      .nav-links{
        position:absolute;left:16px;right:16px;top:72px;background:#fff;border:1px solid #efddd5;border-radius:18px;
        padding:12px;display:none;box-shadow:var(--shadow);flex-direction:column;align-items:stretch
      }
      .nav-links.open{display:flex}
      .nav-links a{width:100%;padding:12px 14px;background:#fff7f4}
      .hero-inner{padding:24px}
      .hero h2{font-size:30px}
      .grid-4,.grid-3,.grid-2,.pricing,.article-list,.network,.service-list,.mini-grid{grid-template-columns:1fr}
      .section-title{flex-direction:column;align-items:flex-start}
      table{min-width:920px}
      .container{width:min(100% - 22px, var(--container))}
    }