:root{--ink:#202333;--muted:#687083;--paper:#f7f8fc;--white:#fff;--line:#e6e8f0;--pink:#f53179;--orange:#ff8b38;--cyan:#13b8c7;--blue:#5266ed;--green:#168b6b;--shadow:0 16px 42px rgba(38,43,76,.09);--max:1180px}
    *{box-sizing:border-box}
    html{scroll-behavior:smooth;scroll-padding-top:88px}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","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(var(--max),calc(100% - 40px));margin-inline:auto}
    .topbar{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);border-bottom:1px solid rgba(224,227,236,.9);backdrop-filter:blur(14px)}
    .nav{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:22px}
    .brand{display:flex;align-items:center;gap:10px;flex-shrink:0;font-weight:800}
    .ai-page-logo{width:38px;max-height:38px;object-fit:contain}
    .brand-name{font-size:17px}
    .nav-links{display:flex;align-items:center;justify-content:flex-end;gap:0;flex-wrap:wrap}
    .nav-links a{font-size:13px;color:#50576b;padding:10px 9px;transition:color .2s}
    .nav-links a:hover{color:var(--pink)}
    .nav-cta,.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:7px;padding:12px 18px;font-weight:750;cursor:pointer;transition:transform .2s,box-shadow .2s,filter .2s}
    .nav-cta,.button-primary{color:#fff;background:linear-gradient(110deg,var(--pink),#ff694d);box-shadow:0 8px 20px rgba(245,49,121,.22)}
    .nav-cta:hover,.button:hover{transform:translateY(-2px);box-shadow:0 12px 25px rgba(39,46,80,.18)}
    .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;background:#fff;padding:76px 0 46px;border-bottom:1px solid var(--line)}
    .hero:before{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(120deg,rgba(255,63,120,.07),transparent 38%,rgba(20,184,199,.08) 75%,transparent)}
    .hero-grid{position:relative;display:grid;grid-template-columns:1.25fr .75fr;gap:54px;align-items:center}
    .eyebrow{display:inline-flex;align-items:center;gap:9px;color:#ad315d;font-size:13px;font-weight:800}
    .eyebrow:before{content:"";width:24px;height:3px;background:linear-gradient(90deg,var(--pink),var(--orange));border-radius:4px}
    h1{max-width:720px;margin:18px 0;font-size:clamp(38px,5.4vw,66px);line-height:1.12}
    .hero h1 span{color:var(--pink)}
    .hero-copy{max-width:650px;color:#596174;font-size:17px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:26px 0}
    .button-secondary{color:#30374b;background:#fff;border:1px solid #dfe2ec}
    .hero-note{font-size:13px;color:#71788b}
    .hero-visual{position:relative;min-height:350px;display:grid;place-items:center}
    .orbit{width:min(330px,75vw);aspect-ratio:1;border:1px solid rgba(82,102,237,.22);border-radius:50%;display:grid;place-items:center;position:relative;background:radial-gradient(circle,rgba(255,255,255,.96) 0 31%,rgba(245,49,121,.035) 32% 58%,transparent 59%)}
    .orbit:before,.orbit:after{content:"";position:absolute;border:1px dashed rgba(19,184,199,.45);border-radius:50%;inset:12%;animation:spin 24s linear infinite}
    .orbit:after{inset:24%;border-color:rgba(245,49,121,.35);animation-direction:reverse;animation-duration:18s}
    .core{width:138px;aspect-ratio:1;display:grid;place-items:center;text-align:center;border-radius:50%;color:#fff;font-size:23px;font-weight:850;background:linear-gradient(145deg,var(--pink),#ff8d42 55%,#ffc04d);box-shadow:0 18px 45px rgba(245,49,121,.25)}
    .orbit-label{position:absolute;padding:8px 12px;border:1px solid #e4e7ef;border-radius:5px;background:#fff;font-size:12px;font-weight:750;box-shadow:0 8px 20px rgba(38,43,76,.08)}
    .orbit-label.one{top:12%;left:1%}.orbit-label.two{top:16%;right:-2%}.orbit-label.three{bottom:13%;left:0}.orbit-label.four{bottom:11%;right:0}
    @keyframes spin{to{transform:rotate(360deg)}}
    .metrics{display:grid;grid-template-columns:repeat(4,1fr);margin-top:38px;border-top:1px solid var(--line)}
    .metric{padding:21px 18px 4px;border-right:1px solid var(--line)}
    .metric:last-child{border:0}
    .metric strong{display:block;font-size:21px}
    .metric span{font-size:12px;color:var(--muted)}
    .section{padding:78px 0}
    .section-head{max-width:720px;margin-bottom:34px}
    .section-kicker{color:#e33f72;text-transform:uppercase;font-size:12px;font-weight:850}
    h2{margin:7px 0 12px;font-size:clamp(28px,3.6vw,42px);line-height:1.2}
    .section-head p,.lead{margin:0;color:var(--muted)}
    .intro-band{background:#242a3d;color:#fff;padding:48px 0}
    .intro-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:48px;align-items:center}
    .intro-band h2{font-size:32px}
    .intro-band p{color:#d6dae6;margin:0}
    .intro-points{display:grid;grid-template-columns:repeat(2,1fr);gap:17px 26px}
    .intro-point{border-left:2px solid var(--orange);padding-left:13px}
    .intro-point strong{display:block;color:#fff;font-size:14px}.intro-point span{font-size:12px;color:#c5cada}
    .service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .service{padding:22px;background:#fff;border:1px solid var(--line);border-radius:7px;transition:transform .2s,border-color .2s,box-shadow .2s}
    .service:hover,.case:hover,.review:hover{transform:translateY(-4px);border-color:#f6a2bd;box-shadow:var(--shadow)}
    .service-mark{width:35px;height:35px;display:grid;place-items:center;border-radius:7px;color:#fff;background:linear-gradient(145deg,var(--pink),var(--orange));font-weight:850;font-size:14px}
    .service h3{font-size:17px;margin:13px 0 6px}
    .service p{font-size:13px;color:var(--muted);margin:0}
    .service-tag{display:inline-block;margin-top:13px;color:#a53259;font-size:11px;font-weight:800}
    .strip{background:#fff;border-block:1px solid var(--line)}
    .workflow{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
    .step{padding:8px 23px 8px 0;position:relative}
    .step:not(:last-child):after{content:"";position:absolute;top:20px;right:15px;width:calc(100% - 72px);height:1px;background:#d7dce8;transform:translateX(50%)}
    .step-num{position:relative;z-index:1;width:40px;height:40px;border-radius:50%;display:grid;place-items:center;background:#fff;border:2px solid var(--cyan);color:#087e88;font-weight:850}
    .step h3{font-size:16px;margin:13px 0 5px}.step p{margin:0;color:var(--muted);font-size:13px}
    .industry{display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:center}
    .industry-copy p{color:var(--muted)}
    .industry-list{display:grid;grid-template-columns:repeat(2,1fr);gap:0 22px}
    .industry-list span{padding:12px 0;border-bottom:1px solid var(--line);font-size:14px}
    .industry-list span:before{content:"+";color:var(--pink);font-weight:900;margin-right:9px}
    .network{background:#fff;border-block:1px solid var(--line)}
    .model-cloud{display:flex;flex-wrap:wrap;gap:9px}
    .model-cloud span{padding:8px 13px;border:1px solid var(--line);border-radius:4px;background:#fff;font-size:13px;color:#3f465a}
    .network-note{color:var(--muted);font-size:13px;margin-top:18px}
    .case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .case{background:#fff;border:1px solid var(--line);border-radius:7px;overflow:hidden;transition:transform .2s,box-shadow .2s}
    .media-frame{aspect-ratio:16/9;background:#f0f1f6;overflow:hidden}
    .media-frame img{width:100%;height:100%;object-fit:cover;display:block}
    .case-body{padding:16px 18px}.case-body h3{font-size:16px;margin:0 0 5px}.case-body p{font-size:13px;color:var(--muted);margin:0}
    .case-square{aspect-ratio:1;background:#f0f1f6;overflow:hidden}
    .case-square img{width:100%;height:100%;object-fit:cover;display:block}
    .review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .review{padding:21px;background:#fff;border:1px solid var(--line);border-radius:7px;transition:transform .2s,box-shadow .2s}
    .stars{color:#f09a20;letter-spacing:2px;font-size:14px}
    .review blockquote{margin:12px 0 17px;font-size:14px;color:#40475a}
    .review cite{font-style:normal;color:var(--muted);font-size:12px;font-weight:750}
    .comparison{display:grid;grid-template-columns:.7fr 1.3fr;gap:30px;align-items:start}
    .score-panel{background:#293047;color:#fff;padding:27px;border-radius:7px}
    .score-panel .score{font-size:52px;line-height:1;font-weight:900;color:#ffbd55;margin:14px 0}
    .score-panel p{margin:7px 0;color:#dce0ea;font-size:13px}
    .score-panel .stars{font-size:20px}
    .table-wrap{overflow-x:auto;border:1px solid var(--line);background:#fff;border-radius:7px}
    table{width:100%;border-collapse:collapse;min-width:590px}
    th,td{text-align:left;padding:13px 15px;border-bottom:1px solid var(--line);font-size:13px}
    th{background:#f0f2f8;color:#30374b}
    td:last-child{color:#168b6b;font-weight:750}
    .table-wrap tr:last-child td{border-bottom:0}
    .match{background:#edf2ff;border-block:1px solid #dce3ff}
    .form-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:42px;align-items:start}
    .contact-details{display:grid;gap:14px;margin-top:22px}
    .contact-details div{padding-bottom:12px;border-bottom:1px solid #d8def0;font-size:14px}
    .contact-details strong{display:block;font-size:12px;color:#626b83}
    .contact-form{display:grid;grid-template-columns:1fr 1fr;gap:14px;background:#fff;padding:24px;border:1px solid #dce3f7;border-radius:7px}
    .field{display:grid;gap:6px}.field.full{grid-column:1/-1}
    .field label{font-size:12px;font-weight:750}
    .field input,.field select,.field textarea{width:100%;border:1px solid #dfe3ec;border-radius:5px;padding:11px 12px;background:#fff;color:var(--ink);outline:none}
    .field input:focus,.field select:focus,.field textarea:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(82,102,237,.12)}
    .field textarea{min-height:110px;resize:vertical}
    .contact-form .button{grid-column:1/-1;justify-self:start}
    .lower-grid{display:grid;grid-template-columns:1fr 1fr;gap:46px}
    .faq-list details{border-bottom:1px solid var(--line);padding:15px 0}
    .faq-list summary{cursor:pointer;list-style:none;font-weight:750;font-size:14px}
    .faq-list summary::-webkit-details-marker{display:none}
    .faq-list summary:after{content:"+";float:right;color:var(--pink);font-size:20px;line-height:1}
    .faq-list details[open] summary:after{content:"−"}
    .faq-list details p{margin:10px 24px 0 0;color:var(--muted);font-size:13px}
    .article-list{list-style:none;padding:0;margin:0}
    .article-list li{padding:13px 0;border-bottom:1px solid var(--line)}
    .article-list a{display:flex;justify-content:space-between;gap:15px;font-size:14px;font-weight:700}
    .article-list a span{color:var(--pink);font-size:12px;white-space:nowrap}
    .subsection{padding:44px 0 0}
    .subsection h2{font-size:25px}
    .subsection p{color:var(--muted)}
    .cta-band{background:linear-gradient(105deg,#fa4078,#ff8943);color:#fff;padding:35px 0}
    .cta-row{display:flex;align-items:center;justify-content:space-between;gap:24px}
    .cta-row h2{font-size:27px;margin:0}.cta-row p{margin:5px 0 0;color:#fff0f3;font-size:14px}
    .cta-row .button{background:#fff;color:#a72e54;white-space:nowrap}
    footer{background:#fff;color:#30374b;border-top:1px solid var(--line);padding:34px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:32px}
    .footer-grid h3{margin:0 0 10px;font-size:14px}
    .footer-grid p,.footer-grid a{font-size:12px;color:#687083}
    .footer-links{display:flex;flex-wrap:wrap;gap:9px 14px}
    .copyright{border-top:1px solid var(--line);margin-top:24px;padding-top:15px;font-size:11px;color:#778094}
    .float-contact{position:fixed;right:16px;bottom:24px;z-index:18;display:grid;gap:8px}
    .float-contact a,.to-top{width:48px;height:48px;border:1px solid var(--line);border-radius:50%;display:grid;place-items:center;background:#fff;color:#30374b;box-shadow:0 7px 24px rgba(34,41,70,.14);font-size:12px;font-weight:800;cursor:pointer}
    .qr-pop{position:absolute;right:58px;bottom:0;display:none;width:168px;padding:9px;background:#fff;border:1px solid var(--line);border-radius:6px;box-shadow:var(--shadow)}
    .qr-pop img{display:block;width:100%;aspect-ratio:1;object-fit:contain}
    .float-contact:hover .qr-pop,.float-contact:focus-within .qr-pop{display:block}
    .reveal{opacity:0;transform:translateY(14px);transition:opacity .55s ease,transform .55s ease}
    .reveal.visible{opacity:1;transform:none}
    @media(max-width:980px){
      .nav-links{display:none;position:absolute;top:75px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);padding:12px 20px 18px;box-shadow:0 12px 20px rgba(38,43,76,.08)}
      .nav-links.open{display:grid;grid-template-columns:repeat(3,1fr)}
      .nav-links a{padding:10px}
      .menu-toggle{display:block;margin-left:auto}
      .nav>.nav-cta{display:none}
      .hero-grid{gap:25px}
      .service-grid{grid-template-columns:repeat(2,1fr)}
      .case-grid{grid-template-columns:repeat(2,1fr)}
      .comparison{grid-template-columns:.65fr 1.35fr}
    }
    @media(max-width:680px){
      .container{width:min(var(--max),calc(100% - 30px))}
      .nav{min-height:66px}.nav-links{top:65px}
      .nav-links.open{grid-template-columns:repeat(2,1fr)}
      .hero{padding:51px 0 30px}
      .hero-grid{grid-template-columns:1fr;gap:10px}
      h1{font-size:42px}
      .hero-copy{font-size:15px}
      .hero-visual{min-height:285px}
      .orbit{width:260px}
      .metrics{grid-template-columns:repeat(2,1fr)}
      .metric{padding:16px 12px;border-bottom:1px solid var(--line)}
      .metric:nth-child(2){border-right:0}
      .section{padding:56px 0}
      .intro-grid,.industry,.form-grid,.lower-grid,.comparison{grid-template-columns:1fr;gap:26px}
      .intro-band{padding:38px 0}
      .intro-points{gap:14px}
      .service-grid,.case-grid,.review-grid{grid-template-columns:1fr}
      .workflow{grid-template-columns:1fr 1fr;gap:24px 12px}
      .step:after{display:none}
      .industry-list{gap:0 13px}
      .contact-form{grid-template-columns:1fr;padding:18px}
      .field.full,.contact-form .button{grid-column:auto}
      .cta-row{align-items:flex-start;flex-direction:column}
      .footer-grid{grid-template-columns:1fr;gap:17px}
      .score-panel .score{font-size:46px}
      .article-list a{align-items:flex-start}
    }
    @media(prefers-reduced-motion:reduce){
      *,*:before,*:after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
      .reveal{opacity:1;transform:none}
    }