:root{--bg:#fff8f3;--card:#fff;--text:#1f2937;--muted:#6b7280;--brand:#c81e1e;--brand2:#ef4444;--line:#f0d4cc;--shadow:0 18px 40px rgba(185,28,28,.12);--radius:20px}
    *{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:radial-gradient(circle at top left,#ffe7dd 0,#fff8f3 32%,#fffdfb 100%);color:var(--text)}
    a{color:inherit;text-decoration:none} img{display:block;max-width:100%}
    .container{width:min(1180px,calc(100% - 32px));margin:0 auto}
    header{position:sticky;top:0;z-index:50;background:rgba(255,248,243,.88);backdrop-filter:blur(10px);border-bottom:1px solid rgba(185,28,28,.08)}
    .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 img{width:42px;height:42px;object-fit:contain;border-radius:12px;background:#fff;padding:4px;box-shadow:0 10px 25px rgba(0,0,0,.08)}
    .brand strong{display:block;font-size:18px;line-height:1.1}
    .brand span{display:block;font-size:12px;color:var(--muted)}
    .menu-toggle{display:none;border:1px solid var(--line);background:#fff;color:var(--text);border-radius:12px;padding:10px 12px}
    nav ul{display:flex;align-items:center;gap:18px;list-style:none;padding:0;margin:0;flex-wrap:wrap}
    nav a{font-size:14px;color:#374151}
    .top-cta{display:flex;align-items:center;gap:10px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:999px;padding:12px 18px;border:1px solid transparent;transition:.25s ease;cursor:pointer}
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:0 10px 24px rgba(200,30,30,.22)}
    .btn-secondary{background:#fff;border-color:var(--line);color:#991b1b}
    .btn:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(185,28,28,.14)}
    main{overflow:hidden}
    section{padding:70px 0}
    .hero{padding:34px 0 56px}
    .hero-wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:stretch}
    .hero-copy,.hero-panel,.card,.panel,.faq-item,.review,.article,.stat,.step,.quote,.form-card,.compare,.price-box{background:rgba(255,255,255,.92);border:1px solid rgba(185,28,28,.09);border-radius:var(--radius);box-shadow:var(--shadow)}
    .hero-copy{padding:34px;position:relative;overflow:hidden}
    .hero-copy:before,.hero-copy:after{content:"";position:absolute;border-radius:50%;background:rgba(200,30,30,.08)}
    .hero-copy:before{width:180px;height:180px;right:-40px;top:-40px}.hero-copy:after{width:120px;height:120px;right:50px;bottom:-50px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;background:#fff1ef;color:#b91c1c;border:1px solid #f5c1b8;border-radius:999px;padding:8px 12px;font-size:13px;font-weight:700}
    h1{margin:16px 0 14px;font-size:clamp(32px,5vw,54px);line-height:1.08;letter-spacing:-.02em}
    .lead{font-size:17px;line-height:1.9;color:#4b5563;max-width:62ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:24px 0 20px}
    .hero-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:18px}
    .mini{padding:14px;border-radius:16px;background:#fff7f4;border:1px solid #f6d7cf}
    .mini b{display:block;font-size:15px}.mini span{display:block;color:var(--muted);font-size:13px;margin-top:6px;line-height:1.5}
    .hero-panel{padding:24px;display:grid;gap:14px}
    .metrics{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
    .stat{padding:18px}
    .stat strong{display:block;font-size:28px;color:#991b1b}.stat span{color:var(--muted);font-size:13px}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag-cloud span{padding:9px 12px;border-radius:999px;background:#fff5f2;border:1px solid #f7d7cf;font-size:13px;color:#7f1d1d}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:20px}
    .section-head h2{margin:0;font-size:clamp(24px,3vw,36px)}
    .section-head p{margin:0;color:var(--muted);max-width:62ch;line-height:1.8}
    .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
    .card,.panel,.review,.article,.step,.quote,.compare,.price-box,.form-card{padding:22px}
    .card h3,.panel h3,.review h3,.article h3,.step h3{margin:0 0 10px;font-size:18px}
    .card p,.panel p,.review p,.article p,.step p{margin:0;color:#4b5563;line-height:1.8}
    .icon{width:46px;height:46px;border-radius:14px;background:linear-gradient(135deg,#ffe2dc,#fff);display:grid;place-items:center;color:#b91c1c;font-size:20px;margin-bottom:14px;border:1px solid #f2cbc2}
    .timeline{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
    .step{position:relative}.step:after{content:"";position:absolute;right:-10px;top:34px;width:20px;height:2px;background:#f1b5aa}.step:last-child:after{display:none}
    .table-wrap{overflow-x:auto;border-radius:18px;border:1px solid rgba(185,28,28,.09);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:14px 16px;border-bottom:1px solid #f2e3de;text-align:left;vertical-align:top}
    th{background:#fff6f3;color:#7f1d1d}
    .compare-note{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
    .compare-note span{background:#fff4ef;border:1px solid #f5d1c7;border-radius:999px;padding:9px 12px;font-size:13px}
    .columns{display:grid;grid-template-columns:1fr 1fr;gap:18px}
    .qa{display:grid;gap:12px}
    .faq-item{padding:0;overflow:hidden}
    .faq-q{width:100%;display:flex;justify-content:space-between;gap:16px;align-items:center;padding:18px 20px;background:#fff;border:0;color:var(--text);font-size:16px;text-align:left;cursor:pointer}
    .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;padding:0 20px;color:#4b5563;line-height:1.8}
    .faq-item.active .faq-a{max-height:180px;padding-bottom:18px}
    .faq-item.active .faq-q{color:#b91c1c}
    .reviews,.articles{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .stars{color:#f59e0b;font-size:18px;letter-spacing:2px;margin-bottom:10px}
    .article .meta{color:#9a3412;font-size:13px;margin-bottom:10px}
    .service-map{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .floating{position:fixed;right:18px;bottom:18px;z-index:60;display:grid;gap:10px}
    .float-btn{width:54px;height:54px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,var(--brand),#ef4444);color:#fff;box-shadow:0 12px 26px rgba(185,28,28,.28)}
    .footer{background:#9f1d1d;color:#fff;padding:34px 0 20px;margin-top:0}
    .footer a{color:#fff7d6}
    .footer .foot-grid{display:grid;grid-template-columns:1.2fr .8fr 1fr;gap:18px}
    .footer small{display:block;color:#ffe7e1;line-height:1.8}
    .footer .links{display:flex;flex-wrap:wrap;gap:10px}
    .footer .links a{padding:8px 10px;border:1px solid rgba(255,255,255,.18);border-radius:999px}
    .contact-grid{display:grid;grid-template-columns:1fr .9fr;gap:18px}
    .form-card form{display:grid;gap:12px}
    .form-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
    input,select,textarea{width:100%;padding:13px 14px;border-radius:14px;border:1px solid #e7c8bf;background:#fff;color:var(--text);font:inherit}
    textarea{min-height:128px;resize:vertical}
    label{font-size:14px;color:#374151;font-weight:600}
    .muted{color:var(--muted)}
    .list{margin:0;padding-left:18px;color:#4b5563;line-height:1.9}
    .toolbar{display:flex;flex-wrap:wrap;gap:10px}
    .video-hero{background:linear-gradient(135deg,#fff4f0,#fff);border:1px solid #f0d6ce;border-radius:22px;padding:18px}
    .responsive-img{border-radius:18px;border:1px solid #f0d6ce;background:#fff;box-shadow:var(--shadow)}
    .top-link{font-weight:700;color:#b91c1c}
    .mobile-menu{display:none}
    .ai-page-logo{width:42px;height:42px;object-fit:contain}
    .ai-page-image{width:100%;height:auto}
    @media (max-width: 980px){
      .hero-wrap,.columns,.contact-grid,.footer .foot-grid,.grid-4,.grid-3,.reviews,.articles,.service-map,.timeline{grid-template-columns:1fr 1fr}
      .hero-points{grid-template-columns:1fr}
      .step:after{display:none}
    }
    @media (max-width: 720px){
      .menu-toggle{display:inline-flex}
      nav{display:none}
      nav.open{display:block}
      nav ul{flex-direction:column;align-items:flex-start;padding:14px 0 0;gap:12px}
      .nav{flex-wrap:wrap}
      .top-cta{margin-left:auto}
      .hero-wrap,.columns,.contact-grid,.footer .foot-grid,.grid-4,.grid-3,.reviews,.articles,.service-map,.timeline,.metrics,.form-row{grid-template-columns:1fr}
      .hero-copy,.hero-panel{padding:22px}
      section{padding:56px 0}
      .section-head{flex-direction:column;align-items:flex-start}
    }