:root{color-scheme:light;--ink:#20252d;--muted:#626b77;--paper:#fffaf4;--white:#fff;--line:#eadfd3;--coral:#f45b52;--orange:#ffb84d;--teal:#2b9a91;--blue:#467fd1;--pink:#f6d7d0;--shadow:0 14px 36px rgba(54,43,31,.08)}
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:system-ui,-apple-system,"Segoe UI","Microsoft YaHei",sans-serif;line-height:1.65}
    a{color:inherit;text-decoration:none}
    button,input,select,textarea{font:inherit}
    img{max-width:100%;height:auto}
    .container{width:min(1160px,calc(100% - 40px));margin-inline:auto}
    .site-header{position:sticky;top:0;z-index:20;background:rgba(255,250,244,.96);border-bottom:1px solid rgba(234,223,211,.9);backdrop-filter:blur(12px)}
    .nav-wrap{min-height:74px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .brand{display:flex;align-items:center;gap:10px;flex:none;font-weight:800;font-size:19px}
    .ai-page-logo{width:38px;height:38px;object-fit:contain}
    .nav-links{display:flex;align-items:center;justify-content:flex-end;gap:0;flex-wrap:wrap}
    .nav-links a{padding:7px 8px;color:#424a55;font-size:12px;white-space:nowrap;border-radius:5px;transition:background .2s,color .2s}
    .nav-links a:hover{background:#ffeadc;color:#b84036}
    .nav-cta,.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:6px;padding:12px 18px;background:var(--coral);color:#fff;font-weight:750;box-shadow:0 7px 18px rgba(244,91,82,.22);transition:transform .2s,box-shadow .2s,background .2s}
    .nav-cta{flex:none;padding:10px 14px;font-size:13px}
    .nav-cta:hover,.button:hover{transform:translateY(-2px);box-shadow:0 10px 22px rgba(244,91,82,.3);background:#df4943}
    .menu-toggle{display:none;width:42px;height:42px;border:1px solid var(--line);background:#fff;border-radius:6px;color:var(--ink);font-size:20px}
    .hero{position:relative;overflow:hidden;padding:76px 0 60px;background:linear-gradient(135deg,#fff2df 0%,#fffaf4 54%,#f1fbf7 100%);border-bottom:1px solid var(--line)}
    .hero:before,.hero:after{content:"";position:absolute;pointer-events:none;border:1px solid rgba(244,91,82,.15);border-radius:50%}
    .hero:before{width:360px;height:360px;right:-120px;top:-190px}
    .hero:after{width:230px;height:230px;right:6%;bottom:-175px;border-color:rgba(43,154,145,.22)}
    .hero-grid{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(280px,.8fr);align-items:center;gap:48px;position:relative;z-index:1}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:#b84036;font-size:13px;font-weight:800;letter-spacing:.4px}
    .eyebrow:before{content:"";width:22px;height:3px;background:var(--orange);border-radius:2px}
    h1{max-width:650px;margin:14px 0 16px;font-size:clamp(38px,5vw,62px);line-height:1.12;letter-spacing:0}
    .hero-copy{max-width:630px;color:#515b67;font-size:18px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:25px}
    .button.secondary{background:#fff;color:#303944;border:1px solid var(--line);box-shadow:none}
    .button.secondary:hover{background:#fff7ee;box-shadow:var(--shadow)}
    .hero-note{margin-top:15px;color:var(--muted);font-size:13px}
    .hero-visual{position:relative;padding:25px 0}
    .signal-panel{border:1px solid #efddcb;background:rgba(255,255,255,.82);padding:24px;border-radius:8px;box-shadow:var(--shadow);transform:rotate(1deg);animation:arrive .65s ease both}
    .signal-panel h2{font-size:17px;margin:0 0 15px}
    .signal-list{display:grid;gap:10px}
    .signal-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:11px 12px;border:1px solid #f1e8df;background:#fffdfa;border-radius:5px}
    .signal-row strong{font-size:13px}
    .signal-row span{color:var(--muted);font-size:12px;text-align:right}
    .signal-footer{margin-top:15px;padding-top:14px;border-top:1px solid var(--line);color:#52616c;font-size:13px}
    .trust-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;margin-top:35px;background:#ebdfd3;border:1px solid #ebdfd3;border-radius:6px;overflow:hidden}
    .trust-strip div{padding:14px;background:#fffaf4;text-align:center;font-size:13px;font-weight:700}
    .section{padding:66px 0;border-bottom:1px solid rgba(234,223,211,.78)}
    .section.tint{background:#fff5e9}
    .section.mint{background:#eff8f3}
    .section-head{max-width:720px;margin-bottom:30px}
    .section-head h2{margin:7px 0 9px;font-size:clamp(27px,3vw,38px);line-height:1.2}
    .section-head p{margin:0;color:var(--muted)}
    .kicker{color:#b84036;font-weight:800;font-size:12px;text-transform:uppercase;letter-spacing:1px}
    .intro-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:42px;align-items:start}
    .intro-copy p{color:#505a65;margin:0 0 14px}
    .pill-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
    .pill{display:inline-flex;padding:7px 11px;border:1px solid #e7d8c7;border-radius:4px;background:#fff;color:#46515c;font-size:12px}
    .capability-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 22px;border-top:1px solid var(--line)}
    .capability{padding:15px 0;border-bottom:1px solid var(--line)}
    .capability h3{font-size:15px;margin:0 0 4px}
    .capability p{font-size:13px;color:var(--muted);margin:0}
    .service-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
    .service{background:#fff;border:1px solid var(--line);border-top:3px solid var(--orange);padding:19px;border-radius:5px;transition:transform .2s,box-shadow .2s}
    .service:nth-child(3n+2){border-top-color:var(--teal)}
    .service:nth-child(3n){border-top-color:var(--coral)}
    .service:hover,.quote:hover,.case:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
    .service h3{font-size:16px;margin:0 0 6px}
    .service p{font-size:13px;color:var(--muted);margin:0}
    .workflow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0}
    .step{position:relative;padding:17px 20px 17px 0;border-top:2px solid #f2b36a}
    .step:not(:last-child):after{content:"";position:absolute;top:-6px;right:12px;width:10px;height:10px;border-radius:50%;background:var(--coral)}
    .step b{display:block;margin-bottom:5px}
    .step p{margin:0;color:var(--muted);font-size:13px}
    .solution-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .solution{padding:19px;background:#fff;border:1px solid var(--line);border-radius:5px}
    .solution h3{margin:0 0 7px;font-size:16px}
    .solution p{margin:0;color:var(--muted);font-size:13px}
    .network{display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:start}
    .model-cloud{display:flex;flex-wrap:wrap;gap:8px}
    .model-cloud span{padding:7px 10px;border:1px solid #d7e6de;border-radius:4px;background:#fff;color:#344d43;font-size:12px}
    .network-note{color:var(--muted);font-size:14px}
    .timeline{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:25px}
    .timeline article{border-left:3px solid var(--teal);padding:2px 0 2px 14px}
    .timeline h3{font-size:15px;margin:0 0 5px}
    .timeline p{font-size:13px;color:var(--muted);margin:0}
    .case-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .case{padding:18px;background:#fff;border:1px solid var(--line);border-radius:5px;transition:transform .2s,box-shadow .2s}
    .case-label{color:#b84036;font-size:12px;font-weight:800}
    .case h3{font-size:16px;margin:7px 0}
    .case p{color:var(--muted);font-size:13px;margin:0}
    .rating-layout{display:grid;grid-template-columns:.72fr 1.28fr;gap:26px;align-items:start}
    .rating-score{background:#fff;border:1px solid var(--line);padding:22px;border-radius:5px}
    .rating-score .score{font-size:48px;line-height:1;font-weight:850;color:#c74b3f}
    .stars{color:#e6a22f;letter-spacing:2px;font-size:20px;margin:8px 0}
    .rating-score p{color:var(--muted);font-size:13px;margin:8px 0 0}
    .table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:5px;background:#fff}
    table{width:100%;min-width:620px;border-collapse:collapse;text-align:left;font-size:13px}
    th,td{padding:12px 14px;border-bottom:1px solid #eee5dc}
    th{background:#fff1df;font-size:12px}
    tr:last-child td{border-bottom:0}
    td:first-child{font-weight:700}
    .good{color:#247c60;font-weight:750}
    .ref{color:#68717b}
    .price-layout{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:center}
    .price-note{padding:21px;border-left:4px solid var(--orange);background:#fff;border-radius:0 5px 5px 0}
    .price-note p{margin:0;color:#505a65}
    .price-items{display:grid;gap:10px}
    .price-items div{display:flex;justify-content:space-between;gap:16px;padding:12px 0;border-bottom:1px solid var(--line);font-size:14px}
    .price-items span:last-child{font-weight:750}
    .reviews{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
    .quote{padding:18px;background:#fff;border:1px solid var(--line);border-radius:5px;transition:transform .2s,box-shadow .2s}
    .quote p{font-size:13px;color:#4f5964;margin:0 0 14px}
    .quote strong{font-size:13px}
    .quote span{display:block;color:var(--muted);font-size:12px}
    .faq-list{border-top:1px solid var(--line)}
    .faq-item{border-bottom:1px solid var(--line)}
    .faq-item summary{position:relative;list-style:none;padding:16px 35px 16px 0;font-weight:750;cursor:pointer}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{content:"+";position:absolute;right:5px;top:12px;color:#b84036;font-size:22px}
    .faq-item[open] summary:after{content:"−"}
    .faq-item p{margin:0;padding:0 35px 16px 0;color:var(--muted);font-size:14px}
    .article-row{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:16px 0;border-bottom:1px solid var(--line)}
    .article-row h3{font-size:15px;margin:0 0 3px}
    .article-row p{font-size:12px;color:var(--muted);margin:0}
    .article-row a{color:#b84036;font-size:13px;font-weight:750;white-space:nowrap}
    .resource-images{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:14px;margin-top:22px}
    .media-frame{border:1px solid var(--line);background:#fff;padding:7px;border-radius:5px}
    .media-frame img{display:block;width:100%;height:auto;aspect-ratio:16/9;object-fit:contain}
    .media-frame.square img{aspect-ratio:1/1}
    .resource-caption{font-size:12px;color:var(--muted);margin:7px 2px 1px}
    .contact-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:32px;align-items:start}
    .contact-info{display:grid;gap:11px}
    .contact-line{padding:13px 0;border-bottom:1px solid var(--line)}
    .contact-line strong{display:block;font-size:14px}
    .contact-line span,.contact-line a{color:var(--muted);font-size:14px}
    .contact-qr{width:148px;padding:7px;border:1px solid var(--line);background:#fff;border-radius:5px}
    .contact-qr img{display:block;width:100%;height:auto}
    .form{display:grid;grid-template-columns:1fr 1fr;gap:13px}
    .field{display:grid;gap:6px}
    .field.full{grid-column:1/-1}
    .field label{font-size:13px;font-weight:700}
    .field input,.field select,.field textarea{width:100%;min-width:0;padding:11px 12px;background:#fff;border:1px solid #d8d1c8;border-radius:4px;color:var(--ink)}
    .field textarea{min-height:112px;resize:vertical}
    .form .button{justify-self:start;cursor:pointer}
    .affiliate{display:flex;justify-content:space-between;align-items:center;gap:24px;padding:24px 0}
    .affiliate h2{font-size:22px;margin:0 0 5px}
    .affiliate p{color:var(--muted);margin:0;max-width:700px}
    .footer{background:#fff1df;color:#303740;padding:28px 0 20px}
    .footer-main{display:flex;align-items:flex-start;justify-content:space-between;gap:30px}
    .footer-brand{font-weight:800;font-size:16px}
    .footer p{color:#5b626b;font-size:13px;margin:5px 0}
    .footer-links{display:flex;flex-wrap:wrap;gap:8px 16px;max-width:560px}
    .footer-links a{color:#434b55;font-size:12px;text-decoration:underline;text-decoration-color:#d7b9a4;text-underline-offset:3px}
    .copyright{border-top:1px solid #e5d5c5;margin-top:18px;padding-top:14px;color:#626871;font-size:12px}
    .float-contact{position:fixed;right:18px;bottom:20px;z-index:15;display:grid;gap:8px}
    .float-contact a{display:grid;place-items:center;width:48px;height:48px;border-radius:50%;background:var(--teal);color:#fff;font-size:12px;font-weight:800;box-shadow:0 6px 18px rgba(35,112,102,.28);transition:transform .2s}
    .float-contact a:last-child{background:var(--coral)}
    .float-contact a:hover{transform:translateY(-3px)}
    .reveal{opacity:0;transform:translateY(12px);transition:opacity .55s ease,transform .55s ease}
    .reveal.visible{opacity:1;transform:none}
    @keyframes arrive{from{opacity:0;transform:translateY(10px) rotate(1deg)}to{opacity:1;transform:translateY(0) rotate(1deg)}}
    @media (prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;animation-duration:.01ms!important;transition-duration:.01ms!important}}
    @media(max-width:980px){
      .nav-wrap{position:relative;flex-wrap:wrap;padding:12px 0}
      .menu-toggle{display:block;margin-left:auto}
      .nav-cta{order:2}
      .nav-links{display:none;order:3;width:100%;justify-content:flex-start;border-top:1px solid var(--line);padding-top:8px}
      .nav-links.open{display:flex}
      .hero-grid{gap:28px}
      .service-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
    }
    @media(max-width:700px){
      .container{width:min(100% - 30px,560px)}
      .hero{padding:52px 0 38px}
      .hero-grid,.intro-grid,.network,.rating-layout,.price-layout,.contact-grid{grid-template-columns:1fr}
      .hero-grid{gap:16px}
      .hero-visual{padding:7px 0}
      .hero-copy{font-size:16px}
      .trust-strip{grid-template-columns:repeat(2,1fr);margin-top:25px}
      .section{padding:48px 0}
      .service-grid,.solution-grid,.case-grid,.reviews{grid-template-columns:1fr}
      .workflow{grid-template-columns:1fr 1fr;gap:10px 18px}
      .step:not(:last-child):after{display:none}
      .timeline{grid-template-columns:1fr;gap:14px}
      .capability-list{grid-template-columns:1fr}
      .resource-images{grid-template-columns:1fr 1fr}
      .resource-images .media-frame:first-child{grid-column:1/-1}
      .footer-main,.affiliate{flex-direction:column;align-items:flex-start}
      .form{grid-template-columns:1fr}
      .field.full{grid-column:auto}
      .float-contact{right:10px;bottom:12px}
      .float-contact a{width:44px;height:44px}
    }