:root{
      --bg:#f7f2ea;
      --panel:#fffaf2;
      --card:#ffffff;
      --text:#1f2937;
      --muted:#617084;
      --line:#eadfce;
      --brand:#ff4d5f;
      --brand2:#ff8a3d;
      --accent:#6b5cff;
      --shadow:0 18px 40px rgba(72,51,28,.08);
      --radius:22px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;background:linear-gradient(180deg,#fffdf8 0%,#f7f2ea 34%,#fbf8f2 100%);color:var(--text)}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%;height:auto}
    .container{max-width:var(--container);margin:0 auto;padding:0 20px}
    .site-header{position:sticky;top:0;z-index:50;background:rgba(255,250,242,.88);backdrop-filter:saturate(1.2) blur(14px);border-bottom:1px solid rgba(234,223,206,.8)}
    .nav{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:74px}
    .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;padding:5px;box-shadow:0 8px 20px rgba(0,0,0,.06)}
    .brand-text{display:flex;flex-direction:column;line-height:1.1}
    .brand-text strong{font-size:16px}
    .brand-text span{font-size:12px;color:var(--muted)}
    .nav-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:14px;color:#344255;padding:8px 0;opacity:.9}
    .nav-links a:hover{color:var(--brand)}
    .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;font-size:14px;transition:.25s ease;cursor:pointer;white-space:nowrap}
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:0 12px 24px rgba(255,77,95,.22)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 28px rgba(255,77,95,.28)}
    .btn-ghost{background:#fff;color:#243042;border:1px solid var(--line)}
    .btn-ghost:hover{border-color:#f0b0b0;color:var(--brand)}
    .menu-toggle{display:none}
    .hero{padding:34px 0 18px}
    .hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:24px;align-items:stretch}
    .hero-copy,.hero-panel,.section-card,.faq-item,.review-card,.service-card,.step-card,.feature-card,.article-card,.compare-card,.form-card,.quote-card{background:var(--card);border:1px solid rgba(234,223,206,.88);border-radius:var(--radius);box-shadow:var(--shadow)}
    .hero-copy{padding:34px;position:relative;overflow:hidden;background:linear-gradient(180deg,#fff 0%,#fffaf3 100%)}
    .hero-copy:before{content:"";position:absolute;inset:auto -70px -120px auto;width:260px;height:260px;background:radial-gradient(circle,rgba(255,77,95,.18),transparent 65%);border-radius:50%}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;background:rgba(255,77,95,.1);color:#be2438;padding:8px 12px;border-radius:999px;font-size:13px;font-weight:700}
    h1{margin:16px 0 14px;font-size:clamp(32px,5vw,54px);line-height:1.08;letter-spacing:-.03em}
    .lead{margin:0 0 22px;color:var(--muted);font-size:16px;line-height:1.8;max-width:56ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:22px}
    .hero-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
    .hero-points div{background:#fff;border:1px solid var(--line);border-radius:18px;padding:14px 14px 12px}
    .hero-points strong{display:block;font-size:18px}
    .hero-points span{display:block;color:var(--muted);font-size:13px;margin-top:4px;line-height:1.5}
    .hero-panel{padding:18px;background:linear-gradient(160deg,#12192a 0%,#202b43 48%,#321a2d 100%);color:#f7f2ea;overflow:hidden;position:relative}
    .hero-panel:before,.hero-panel:after{content:"";position:absolute;border-radius:50%;background:rgba(255,255,255,.08)}
    .hero-panel:before{width:240px;height:240px;right:-90px;top:-70px}
    .hero-panel:after{width:180px;height:180px;left:-70px;bottom:-80px}
    .metric-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
    .metric{padding:18px;border-radius:18px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12)}
    .metric strong{display:block;font-size:28px;line-height:1}
    .metric span{display:block;margin-top:8px;font-size:13px;color:rgba(247,242,234,.82);line-height:1.5}
    .panel-note{margin-top:14px;padding:16px;border-radius:18px;background:rgba(255,255,255,.08);line-height:1.7;color:rgba(247,242,234,.92)}
    .section{padding:22px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:16px}
    .section-head h2{margin:0;font-size:26px}
    .section-head p{margin:0;color:var(--muted);line-height:1.7;max-width:60ch}
    .section-card{padding:24px}
    .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}
    .feature-card,.service-card,.step-card,.review-card,.article-card,.compare-card,.quote-card{padding:20px}
    .feature-card h3,.service-card h3,.step-card h3,.review-card h3,.article-card h3{margin:0 0 10px;font-size:18px}
    .feature-card p,.service-card p,.step-card p,.review-card p,.article-card p,.compare-card p{margin:0;color:var(--muted);line-height:1.75}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:10px 14px;border:1px solid var(--line);border-radius:999px;background:#fff;font-size:13px;color:#324154}
    .split{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .image-stack{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .image-stack img,.case-image{border-radius:18px;border:1px solid var(--line)}
    .note-box{padding:18px;border-radius:18px;background:#fff8f0;border:1px solid #f1d8be;color:#5a4634;line-height:1.75}
    .table-wrap{overflow:auto;border-radius:18px;border:1px solid var(--line);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:16px 14px;border-bottom:1px solid #f0e6d8;text-align:left;vertical-align:top}
    th{background:#fff7ef;font-size:14px}
    td{color:#354355;font-size:14px;line-height:1.65}
    .rating{display:flex;gap:6px;align-items:center;font-weight:800;color:#d34836}
    .stars{letter-spacing:2px}
    .faq-list{display:grid;gap:12px}
    .faq-item{overflow:hidden}
    .faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 20px;background:none;border:0;text-align:left;font-size:16px;font-weight:700;color:#223042;cursor:pointer}
    .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;padding:0 20px;color:var(--muted);line-height:1.8}
    .faq-item.open .faq-a{max-height:200px;padding-bottom:18px}
    .faq-icon{font-size:20px;color:var(--brand)}
    .reviews,.articles,.services,.steps,.compare,.contact{display:grid;gap:16px}
    .review-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px}
    .review-role{font-size:13px;color:var(--brand);font-weight:700}
    .time{font-size:12px;color:#7a8797}
    .article-card .meta{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px;color:#6d7b8b;font-size:13px}
    .article-card .meta span{padding:6px 10px;background:#f8f3ea;border-radius:999px}
    .form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .field{display:flex;flex-direction:column;gap:8px}
    .field label{font-size:14px;font-weight:700;color:#2d3746}
    input,select,textarea{width:100%;border:1px solid #dfe2e8;border-radius:14px;padding:13px 14px;font:inherit;background:#fff;color:#233041;outline:none;transition:.2s}
    input:focus,select:focus,textarea:focus{border-color:#ff8a3d;box-shadow:0 0 0 4px rgba(255,138,61,.12)}
    textarea{min-height:120px;resize:vertical}
    .full{grid-column:1/-1}
    .footer{margin-top:24px;padding:24px 0 30px;background:#111827;color:#f8fafc}
    .footer a{color:#ffe0b8}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr .9fr;gap:18px;align-items:start}
    .footer small,.footer p,.footer li{color:#d4d8df;line-height:1.8}
    .footer h3{margin:0 0 12px;font-size:16px;color:#fff}
    .footer ul{margin:0;padding:0;list-style:none;display:grid;gap:8px}
    .footer-bottom{margin-top:18px;padding-top:18px;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
    .floating{position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px}
    .float-btn{display:inline-flex;align-items:center;justify-content:center;width:52px;height:52px;border-radius:16px;background:linear-gradient(135deg,var(--brand),var(--accent));color:#fff;box-shadow:0 14px 28px rgba(80,45,130,.24);font-weight:800}
    .float-btn:hover{transform:translateY(-2px)}
    .service-map{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
    .service-node{padding:16px;border-radius:18px;background:#fff;border:1px solid var(--line);text-align:center;color:#2e3c4e;font-weight:700}
    .case-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .case-card{overflow:hidden;border-radius:22px;border:1px solid var(--line);background:#fff}
    .case-card .body{padding:16px}
    .pill{display:inline-flex;padding:7px 10px;border-radius:999px;background:#f7ecff;color:#6b4ca8;font-size:12px;font-weight:700}
    .scroll-top{display:none}
    .mobile-menu{display:none}
    @media (max-width: 960px){
      .hero-grid,.split,.footer-grid,.grid-4,.service-map,.case-grid,.grid-3{grid-template-columns:1fr 1fr}
      .nav-links{display:none}
      .menu-toggle{display:inline-flex}
      .mobile-menu{display:none;flex-direction:column;gap:8px;padding:14px 0 18px}
      .mobile-menu a{padding:10px 0;border-top:1px solid rgba(234,223,206,.9);color:#2d3847}
      .mobile-menu.open{display:flex}
      .section-head{align-items:start;flex-direction:column}
    }
    @media (max-width: 640px){
      .hero-grid,.split,.footer-grid,.grid-4,.service-map,.case-grid,.grid-3,.hero-points,.metric-grid,.form-grid{grid-template-columns:1fr}
      .hero-copy,.section-card{padding:20px}
      .hero{padding-top:20px}
      .nav{min-height:68px}
      .brand-text span{display:none}
      .hero-actions .btn,.nav-cta .btn{width:100%}
      .nav-cta{display:none}
      .menu-toggle{margin-left:auto}
      .mobile-menu .btn{width:100%}
      .floating{right:12px;bottom:12px}
    }
    .reveal{opacity:0;transform:translateY(12px);transition:.5s ease}
    .reveal.show{opacity:1;transform:none}