:root{
      --bg:#fff8f5;
      --bg2:#fff1eb;
      --card:#ffffff;
      --text:#231f20;
      --muted:#6d5a57;
      --primary:#b11217;
      --primary2:#e53935;
      --line:#f0d7d2;
      --shadow:0 14px 36px rgba(177,18,23,.10);
      --radius:20px;
      --max:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;background:linear-gradient(180deg,var(--bg),#fff 35%,var(--bg2));color:var(--text);line-height:1.65}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--max),calc(100% - 32px));margin:0 auto}
    header{position:sticky;top:0;z-index:50;background:rgba(255,248,245,.88);backdrop-filter:blur(12px);border-bottom:1px solid rgba(240,215,210,.7)}
    .nav{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 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:12px;background:#fff;box-shadow:0 6px 18px rgba(177,18,23,.12);padding:4px}
    .brand h2{margin:0;font-size:18px;line-height:1.1}
    .brand p{margin:2px 0 0;color:var(--muted);font-size:12px}
    .nav-links{display:flex;align-items:center;gap:16px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:14px;color:#4b3d3b}
    .nav-cta{display:flex;align-items:center;gap:10px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:999px;padding:12px 18px;font-weight:700;transition:.25s ease;cursor:pointer}
    .btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;box-shadow:0 10px 22px rgba(177,18,23,.22)}
    .btn-light{background:#fff;color:var(--primary);border-color:#f1c9c4}
    .btn:hover{transform:translateY(-2px);box-shadow:0 14px 28px rgba(177,18,23,.15)}
    .menu-toggle{display:none;border:1px solid #f1c9c4;background:#fff;border-radius:12px;padding:10px 12px;color:var(--primary);font-weight:700}
    .hero{padding:44px 0 24px}
    .hero-wrap{display:grid;grid-template-columns:1.25fr .75fr;gap:20px;align-items:stretch}
    .hero-main,.hero-side,.section-card,.panel,.faq-item,.review-card,.article-card,.timeline-item,.price-card{background:var(--card);border:1px solid rgba(240,215,210,.9);border-radius:var(--radius);box-shadow:var(--shadow)}
    .hero-main{padding:34px;position:relative;overflow:hidden}
    .hero-main:before,.hero-main:after{content:"";position:absolute;border-radius:999px;background:radial-gradient(circle,rgba(229,57,53,.18),rgba(229,57,53,0) 70%)}
    .hero-main:before{width:280px;height:280px;right:-80px;top:-70px}
    .hero-main:after{width:180px;height:180px;right:120px;bottom:-60px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;background:#fff1ef;color:var(--primary);border:1px solid #f6cbc5;border-radius:999px;padding:7px 12px;font-size:13px;font-weight:700}
    h1{margin:16px 0 12px;font-size:clamp(30px,4vw,54px);line-height:1.05;letter-spacing:-.02em}
    .lead{margin:0;color:#4e3c39;font-size:16px;max-width:56ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
    .hero-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:24px}
    .mini-stat{padding:14px 14px 12px;background:#fff7f5;border:1px solid #f2d4cf;border-radius:16px}
    .mini-stat strong{display:block;font-size:20px;color:var(--primary)}
    .mini-stat span{font-size:13px;color:var(--muted)}
    .hero-side{padding:22px}
    .side-block{padding:18px;border-radius:18px;background:linear-gradient(180deg,#fff,#fff7f5);border:1px solid #f3ddd7;margin-bottom:14px}
    .side-block h3{margin:0 0 8px;font-size:18px}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
    .tag{padding:8px 11px;border-radius:999px;background:#fff0ed;border:1px solid #f4d0ca;font-size:13px;color:#6b4742}
    section{padding:18px 0}
    .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin:10px 0 14px}
    .section-head h2{margin:0;font-size:28px}
    .section-head p{margin:0;color:var(--muted)}
    .grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
    .grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .section-card{padding:20px}
    .section-card h3{margin:0 0 8px;font-size:18px}
    .section-card p,.section-card li{color:#5a4845}
    .icon{width:44px;height:44px;border-radius:14px;background:linear-gradient(135deg,#ffe7e4,#ffd3cd);display:grid;place-items:center;color:var(--primary);font-weight:800;margin-bottom:12px}
    .steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .step{padding:20px;background:#fff;border:1px solid #f0d7d2;border-radius:18px}
    .step .num{font-size:14px;font-weight:800;color:var(--primary)}
    table{width:100%;border-collapse:collapse;background:#fff;border-radius:18px;overflow:hidden}
    th,td{padding:14px 12px;border-bottom:1px solid #f1dfda;text-align:left;vertical-align:top;font-size:14px}
    th{background:#fff3f1;color:#3d2f2d}
    .table-wrap{overflow-x:auto;border:1px solid #f0d7d2;border-radius:18px;box-shadow:var(--shadow)}
    .compare-badge{display:inline-flex;padding:7px 10px;border-radius:999px;background:#fff0ee;color:var(--primary);font-weight:700;font-size:13px}
    .review-card,.article-card,.timeline-item{padding:18px}
    .stars{color:#e7a11d;font-weight:700}
    .faq{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 .answer{padding:0 20px 18px;color:#5d4b48}
    .form{padding:22px}
    .form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
    .field{display:flex;flex-direction:column;gap:8px}
    label{font-size:14px;font-weight:700;color:#4b3d3b}
    input,select,textarea{width:100%;border:1px solid #e7cfc9;border-radius:14px;padding:12px 14px;font:inherit;background:#fff;color:var(--text);outline:none}
    textarea{min-height:120px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:#d84843;box-shadow:0 0 0 4px rgba(229,57,53,.09)}
    .full{grid-column:1/-1}
    .footer{margin-top:18px;padding:22px 0 30px;border-top:1px solid #eed8d3;background:#fff7f5;color:#4f3f3c}
    .footer a{color:#a31216}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:16px}
    .muted{color:var(--muted)}
    .floating{position:fixed;right:14px;bottom:14px;z-index:60;display:flex;flex-direction:column;gap:10px}
    .float-btn{width:48px;height:48px;border-radius:16px;display:grid;place-items:center;background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;box-shadow:0 12px 24px rgba(177,18,23,.25)}
    .top-btn{background:#fff;color:var(--primary);border:1px solid #f0d7d2}
    .mobile-nav{display:none;padding:0 0 14px}
    .mobile-nav .nav-links{justify-content:flex-start;gap:10px}
    .scroll-animate{opacity:0;transform:translateY(18px);transition:.6s ease}
    .scroll-animate.show{opacity:1;transform:none}
    .price-card{padding:18px}
    .price{font-size:30px;font-weight:900;color:var(--primary);margin:8px 0}
    @media (max-width: 960px){
      .hero-wrap,.grid-4,.grid-3,.steps,.footer-grid{grid-template-columns:1fr 1fr}
      .hero-points,.grid-2{grid-template-columns:1fr 1fr}
    }
    @media (max-width: 720px){
      .nav-links,.nav-cta{display:none}
      .menu-toggle{display:inline-flex}
      .mobile-nav.show{display:block}
      .hero-wrap,.grid-4,.grid-3,.grid-2,.steps,.footer-grid,.form-grid{grid-template-columns:1fr}
      .hero-main{padding:24px}
      .hero-points{grid-template-columns:1fr}
      .section-head{align-items:flex-start;flex-direction:column}
      h1{font-size:34px}
      .container{width:min(var(--max),calc(100% - 22px))}
    }