:root{--bg:#fff7ef;--bg2:#fffdf9;--card:#ffffff;--text:#1f2937;--muted:#5f6774;--brand:#ff6a00;--brand2:#ff8a1f;--line:#f2dfcf;--shadow:0 16px 40px rgba(255,106,0,.12);--radius:22px;--container:1180px}
    *{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--text);background:linear-gradient(180deg,#fff7ef 0%,#fffdf9 42%,#fff 100%);line-height:1.7}
    a{color:inherit;text-decoration:none}img{display:block;max-width:100%}button,input,select,textarea{font:inherit}
    .container{width:min(var(--container),calc(100% - 32px));margin:0 auto}
    header{position:sticky;top:0;z-index:50;background:rgba(255,250,245,.88);backdrop-filter:blur(14px);border-bottom:1px solid rgba(242,223,207,.9)}
    .topbar{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:14px 0}
    .brand{display:flex;align-items:center;gap:14px;min-width:0}
    .ai-page-logo{width:46px;height:46px;object-fit:contain;border-radius:14px;background:#fff;border:1px solid var(--line);box-shadow:0 8px 24px rgba(0,0,0,.05)}
    .brand h1{margin:0;font-size:16px;line-height:1.25}.brand small{display:block;color:var(--muted);font-size:12px}
    nav{display:flex;align-items:center;gap:14px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
    .nav-links a{font-size:14px;color:#374151;padding:8px 0;position:relative}
    .nav-links a:after{content:"";position:absolute;left:0;bottom:3px;width:0;height:2px;background:linear-gradient(90deg,var(--brand),var(--brand2));transition:.25s}
    .nav-links a:hover:after,.nav-links a:focus-visible:after{width:100%}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:none;border-radius:999px;padding:12px 18px;font-weight:700;cursor:pointer;transition:.25s ease;white-space:nowrap}
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:0 14px 28px rgba(255,106,0,.22)}
    .btn-secondary{background:#fff;color:var(--brand);border:1px solid #ffd0ad}
    .btn:hover{transform:translateY(-2px);box-shadow:0 18px 30px rgba(255,106,0,.18)}
    .menu-toggle{display:none;background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px 12px;color:#111827}
    main{padding:22px 0 18px}
    section{padding:34px 0}
    .hero{padding-top:18px}
    .hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:stretch}
    .hero-card{background:linear-gradient(145deg,#1e293b 0%,#111827 100%);color:#f9fafb;border-radius:30px;padding:32px;box-shadow:0 24px 60px rgba(17,24,39,.16);position:relative;overflow:hidden}
    .hero-card:before,.hero-card:after{content:"";position:absolute;border-radius:50%;background:radial-gradient(circle,rgba(255,138,31,.22),rgba(255,138,31,0) 68%)}
    .hero-card:before{width:260px;height:260px;top:-100px;right:-70px}.hero-card:after{width:180px;height:180px;bottom:-70px;left:-30px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.1);padding:8px 12px;border-radius:999px;color:#ffd8b0;font-size:13px}
    .hero h2{margin:16px 0 12px;font-size:clamp(34px,6vw,52px);line-height:1.08;letter-spacing:-.02em}
    .hero p{margin:0;color:#d1d5db;max-width:62ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
    .hero-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:26px}
    .mini-stat{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.09);border-radius:20px;padding:14px}
    .mini-stat strong{display:block;font-size:22px;color:#fff}.mini-stat span{color:#e5e7eb;font-size:13px}
    .side-panel{display:grid;gap:14px}
    .glass{background:rgba(255,255,255,.78);border:1px solid rgba(255,208,173,.8);backdrop-filter:blur(10px);border-radius:28px;padding:22px;box-shadow:var(--shadow)}
    .glass h3{margin:0 0 10px;font-size:20px}.glass p,.glass li{color:var(--muted)}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}.tag{padding:8px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;color:#5a6170}
    .grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
    .card{background:var(--card);border:1px solid rgba(242,223,207,.9);border-radius:24px;padding:22px;box-shadow:0 10px 30px rgba(17,24,39,.05);transition:.25s ease}
    .card:hover{transform:translateY(-4px);box-shadow:0 18px 36px rgba(255,106,0,.11)}
    .card h3,.card h4{margin:0 0 10px}.card p{margin:0;color:var(--muted)}
    .section-title{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:18px}
    .section-title h2{margin:0;font-size:28px;line-height:1.15}.section-title p{margin:0;color:var(--muted);max-width:62ch}
    .metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .metric{padding:20px;border-radius:22px;background:linear-gradient(180deg,#fff,#fff9f2);border:1px solid #f5dcc5}
    .metric strong{display:block;font-size:28px;color:#111827}.metric span{color:var(--muted);font-size:13px}
    .timeline{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .step{position:relative;padding:22px 18px 18px}
    .step .num{display:inline-flex;width:38px;height:38px;align-items:center;justify-content:center;border-radius:12px;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;font-weight:800;margin-bottom:14px}
    .compare-wrap{overflow-x:auto;border-radius:24px;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 #f2e7dc;text-align:left;vertical-align:top}th{background:#fff8f2;font-size:14px}td{color:#374151}
    .badge{display:inline-flex;align-items:center;padding:6px 10px;border-radius:999px;background:#fff1e5;color:#c2410c;border:1px solid #ffd8b8;font-size:12px;font-weight:700}
    .split{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:start}
    .quote-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .quote{background:linear-gradient(180deg,#fff,#fff8f1);border:1px solid #f3dcc7;border-radius:24px;padding:20px}
    .quote p{margin:0 0 16px;color:#374151}.quote strong{display:block}.quote span{color:var(--muted);font-size:13px}
    .faq details{background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px 18px;box-shadow:0 8px 20px rgba(17,24,39,.04)}
    .faq details+details{margin-top:12px}.faq summary{cursor:pointer;font-weight:700;list-style:none}.faq summary::-webkit-details-marker{display:none}
    .faq summary:after{content:"＋";float:right;color:var(--brand);font-weight:800}.faq details[open] summary:after{content:"－"}
    .articles{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .article a{display:inline-flex;margin-top:14px;color:var(--brand);font-weight:700}
    .form-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:18px}
    form{display:grid;gap:12px}
    .field{display:grid;gap:6px}.field label{font-size:14px;font-weight:700;color:#374151}
    .field input,.field select,.field textarea{width:100%;border:1px solid #e8d6c5;background:#fff;border-radius:14px;padding:12px 14px;color:#111827;outline:none;transition:.2s}
    .field input:focus,.field select:focus,.field textarea:focus{border-color:#ffb170;box-shadow:0 0 0 4px rgba(255,138,31,.12)}
    .field textarea{min-height:120px;resize:vertical}
    .footer{padding:26px 0 34px;border-top:1px solid #f1dfcf;background:#fffdf9;color:#334155}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:18px}
    .footer a{color:#b45309}.footer small{color:#64748b}
    .floating{position:fixed;right:16px;bottom:18px;z-index:60;display:grid;gap:10px}
    .floating a,.floating button{width:48px;height:48px;border-radius:50%;display:grid;place-items:center;border:none;box-shadow:0 14px 30px rgba(0,0,0,.15);background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;cursor:pointer}
    .scrolltop{display:none}
    .fade-in{opacity:0;transform:translateY(14px);transition:.6s ease}
    .fade-in.show{opacity:1;transform:none}
    .service-images{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
    .service-images img{border-radius:20px;border:1px solid var(--line);background:#fff}
    .two-col{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .list{display:grid;gap:10px;padding:0;margin:0;list-style:none}
    .list li{display:flex;gap:10px;align-items:flex-start;color:#374151}
    .list li:before{content:"";width:10px;height:10px;border-radius:50%;margin-top:8px;background:linear-gradient(135deg,var(--brand),var(--brand2));flex:0 0 auto}
    .nav-mobile{display:none}
    @media (max-width: 980px){
      .hero-grid,.grid-4,.metrics,.timeline,.quote-grid,.articles,.split,.form-grid,.footer-grid,.service-images,.two-col{grid-template-columns:1fr}
      nav{gap:10px}.nav-links{display:none}.nav-mobile{display:flex}.menu-toggle{display:inline-flex}
      .topbar{flex-wrap:wrap}.hero-card{padding:24px}.hero-points{grid-template-columns:1fr}
      .section-title{align-items:start;flex-direction:column}
    }
    @media (max-width: 640px){
      .container{width:min(var(--container),calc(100% - 24px))}
      .hero h2{font-size:32px}.hero-card,.glass,.card{border-radius:22px}
      .hero-actions{flex-direction:column}.btn{width:100%}.floating{right:12px;bottom:12px}
      .mobile-panel{display:none;width:100%;padding:12px 0 2px}.mobile-panel.open{display:block}
      .mobile-panel .nav-links{display:grid;grid-template-columns:1fr 1fr;gap:8px}
      .mobile-panel .nav-links a{background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px 12px}
    }