:root{
      --ink:#17202c;
      --muted:#5e6978;
      --paper:#f8fafc;
      --white:#fff;
      --line:#dce3eb;
      --cyan:#00c9c8;
      --pink:#f24b91;
      --violet:#6b5cff;
      --lime:#b7e636;
      --navy:#162336;
      --shadow:0 18px 45px rgba(22,35,54,.10);
      --container:min(1180px,calc(100% - 40px));
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.7}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;height:auto;display:block}
    .container{width:var(--container);margin:0 auto}
    .topline{height:4px;background:var(--navy);border-bottom:2px solid var(--cyan)}
    header{position:sticky;top:0;z-index:20;background:rgba(248,250,252,.94);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}
    .nav{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
    .ai-page-logo{width:42px;height:42px;object-fit:contain}
    .brand strong{font-size:20px;letter-spacing:0}
    .brand small{display:block;color:var(--muted);font-size:11px;line-height:1.2}
    .nav-links{display:flex;align-items:center;gap:0;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{padding:7px 10px;font-size:13px;color:#344052;transition:.25s}
    .nav-links a:hover{color:var(--pink)}
    .nav-cta,.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;cursor:pointer;font-weight:700;transition:transform .25s,box-shadow .25s,background .25s}
    .nav-cta{padding:10px 16px;background:var(--pink);color:#fff;font-size:13px}
    .nav-cta:hover,.button:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(242,75,145,.24)}
    .menu-toggle{display:none;background:none;border:1px solid var(--line);padding:8px 11px;font-size:20px;color:var(--ink)}
    .hero{position:relative;overflow:hidden;background:var(--navy);color:#fff;padding:92px 0 74px;border-bottom:6px solid var(--lime)}
    .hero:before,.hero:after{content:"";position:absolute;border:1px solid rgba(0,201,200,.45);transform:rotate(25deg);pointer-events:none}
    .hero:before{width:280px;height:280px;right:5%;top:-90px}
    .hero:after{width:150px;height:150px;left:10%;bottom:-80px;border-color:rgba(242,75,145,.55)}
    .hero-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(320px,.85fr);gap:58px;align-items:center;position:relative;z-index:1}
    .eyebrow{display:inline-flex;color:var(--lime);font-weight:700;letter-spacing:.12em;font-size:13px;border-left:3px solid var(--cyan);padding-left:12px}
    h1{font-size:clamp(36px,5vw,64px);line-height:1.16;letter-spacing:0;margin:18px 0 20px;max-width:680px}
    .hero-copy{font-size:18px;color:#dbe6ef;max-width:650px;margin:0 0 30px}
    .actions{display:flex;gap:12px;flex-wrap:wrap}
    .button{padding:13px 22px;font-size:15px}
    .button.primary{background:var(--cyan);color:#08252b}
    .button.secondary{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.45)}
    .hero-panel{border:1px solid rgba(255,255,255,.25);padding:24px;background:rgba(255,255,255,.07)}
    .hero-panel h2{font-size:19px;margin:0 0 18px}
    .signal{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .signal div{padding:16px;border-left:3px solid var(--pink);background:rgba(255,255,255,.08)}
    .signal b{display:block;font-size:27px;color:var(--lime);line-height:1.2}
    .signal span{font-size:12px;color:#dbe6ef}
    section{padding:82px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:32px}
    .section-head h2{font-size:clamp(27px,3vw,40px);line-height:1.25;margin:0;letter-spacing:0}
    .section-head p{color:var(--muted);max-width:560px;margin:0}
    .kicker{color:var(--pink);font-size:13px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;margin-bottom:8px}
    .about{background:#fff;border-bottom:1px solid var(--line)}
    .about-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start}
    .about-lead{font-size:20px;line-height:1.7;margin:0}
    .about-list{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .about-list div{border-top:3px solid var(--cyan);padding:13px 0}
    .about-list b{display:block;font-size:18px}
    .about-list span{font-size:13px;color:var(--muted)}
    .service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .service-card{background:#fff;border:1px solid var(--line);padding:22px;position:relative;transition:.25s}
    .service-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:var(--cyan)}
    .service-card:nth-child(3n+2){border-top:4px solid var(--pink)}
    .service-card:nth-child(3n+1){border-top:4px solid var(--cyan)}
    .service-card:nth-child(3n){border-top:4px solid var(--violet)}
    .service-card h3{margin:0 0 8px;font-size:19px}
    .service-card p{margin:0;color:var(--muted);font-size:14px}
    .service-card .tag{display:inline-block;margin-top:16px;padding:3px 8px;background:#eef9f8;color:#008e8c;font-size:12px}
    .workflow{background:#edf3f7}
    .steps{display:grid;grid-template-columns:repeat(5,1fr);gap:0;border-top:2px solid var(--navy)}
    .step{padding:22px 18px 0;border-right:1px solid var(--line);position:relative}
    .step:last-child{border-right:0}
    .step strong{display:block;color:var(--pink);font-size:30px;line-height:1;margin-bottom:15px}
    .step h3{font-size:17px;margin:0 0 7px}
    .step p{font-size:13px;color:var(--muted);margin:0}
    .solution-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
    .solution{background:var(--navy);color:#fff;padding:30px;min-height:220px}
    .solution:nth-child(2){background:var(--pink)}
    .solution:nth-child(3){background:var(--violet)}
    .solution:nth-child(4){background:#087f82}
    .solution h3{margin:0 0 10px;font-size:23px}
    .solution p{margin:0;color:#eef7f7;font-size:14px}
    .solution ul{margin:16px 0 0;padding-left:20px;color:#eef7f7;font-size:13px}
    .network{background:#fff}
    .model-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
    .model-cloud span{padding:7px 12px;border:1px solid var(--line);background:#f7fafc;font-size:13px}
    .network-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:30px;align-items:start}
    .network-note{border-left:5px solid var(--lime);padding:18px 22px;background:#f5f9e5}
    .compare{background:#f2f6fa}
    .rating{display:flex;align-items:center;gap:18px;background:var(--navy);color:#fff;padding:22px 26px;margin-bottom:22px}
    .rating strong{font-size:38px;color:var(--lime);line-height:1}
    .stars{color:var(--lime);letter-spacing:4px;font-size:20px}
    .table-wrap{overflow-x:auto;background:#fff;border:1px solid var(--line)}
    table{width:100%;min-width:720px;border-collapse:collapse}
    th,td{text-align:left;padding:15px 17px;border-bottom:1px solid var(--line);font-size:14px;vertical-align:top}
    th{background:#e8eef4;color:#273649}
    td:last-child{color:#008e8c;font-weight:700}
    .cases-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .case{background:#fff;border:1px solid var(--line);overflow:hidden}
    .case-image{aspect-ratio:16/9;background:#e9eef2;overflow:hidden}
    .case-image img{width:100%;height:100%;object-fit:cover}
    .case-body{padding:18px}
    .case h3{margin:0 0 7px;font-size:18px}
    .case p{margin:0;color:var(--muted);font-size:13px}
    .comments{background:#fff}
    .comment-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .comment{padding:22px;border:1px solid var(--line);background:#fbfcfd}
    .comment p{margin:0 0 16px;font-size:14px}
    .comment footer{color:var(--pink);font-size:13px;font-weight:700}
    .match{background:#eaf8f6}
    .match-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:34px;align-items:start}
    .match-copy h2{margin-top:0}
    .match-copy p{color:var(--muted)}
    form{display:grid;grid-template-columns:1fr 1fr;gap:14px;background:#fff;padding:24px;border:1px solid var(--line)}
    label{font-size:13px;font-weight:700}
    input,select,textarea{width:100%;margin-top:6px;padding:12px;border:1px solid #cdd7e1;background:#fff;color:var(--ink);font:inherit}
    textarea{min-height:120px;resize:vertical}
    .field-full{grid-column:1/-1}
    form .button{background:var(--pink);color:#fff}
    .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px 28px}
    details{background:#fff;border-bottom:1px solid var(--line);padding:15px 0}
    summary{cursor:pointer;font-weight:700;padding-right:20px}
    details p{color:var(--muted);font-size:14px;margin:10px 0 0}
    .articles{background:#f2f6fa}
    .article-layout{display:grid;grid-template-columns:1.2fr .8fr;gap:24px}
    .article-list{display:grid;gap:10px}
    .article-item{display:flex;justify-content:space-between;gap:18px;background:#fff;border-left:4px solid var(--cyan);padding:15px 17px}
    .article-item span{color:var(--muted);font-size:12px;white-space:nowrap}
    .百科{background:#fff}
    .knowledge{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .knowledge div{padding:18px;background:#f6f8fa;border-top:3px solid var(--violet)}
    .knowledge h3{font-size:17px;margin:0 0 6px}
    .knowledge p{margin:0;color:var(--muted);font-size:13px}
    .contact{background:var(--navy);color:#fff}
    .contact .section-head p{color:#cbd9e4}
    .contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
    .contact-card{border:1px solid rgba(255,255,255,.2);padding:24px}
    .contact-card h3{margin:0 0 12px}
    .contact-card p{color:#d8e4ec;margin:7px 0}
    .qr{width:130px;margin-top:15px;background:#fff;padding:7px}
    footer{background:#0d1725;color:#c9d6e0;padding:30px 0 22px}
    .footer-top{display:flex;justify-content:space-between;gap:30px;align-items:start}
    .footer-top h3{color:#fff;margin:0 0 8px}
    .footer-top p{margin:0;color:#b6c5d0;font-size:13px}
    .links{display:flex;flex-wrap:wrap;gap:12px 18px;justify-content:flex-end;font-size:13px}
    .links a:hover{color:var(--lime)}
    .copyright{border-top:1px solid rgba(255,255,255,.15);margin-top:24px;padding-top:15px;font-size:12px;color:#91a3b2}
    .float-help{position:fixed;right:22px;bottom:22px;z-index:18;background:var(--pink);color:#fff;padding:12px 16px;box-shadow:0 10px 25px rgba(0,0,0,.2);font-weight:700;font-size:13px}
    .reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
    .reveal.visible{opacity:1;transform:none}
    @media(max-width:980px){
      .nav-links{display:none;position:absolute;top:76px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);padding:10px 20px;box-shadow:var(--shadow)}
      .nav-links.open{display:grid;grid-template-columns:repeat(3,1fr)}
      .nav-links a{padding:10px 6px}
      .menu-toggle{display:block}
      .nav-cta{display:none}
      .hero-grid,.about-grid,.network-layout,.match-grid,.article-layout{grid-template-columns:1fr}
      .service-grid{grid-template-columns:repeat(2,1fr)}
      .steps{grid-template-columns:repeat(3,1fr);gap:16px;border-top:0}
      .step{border-right:0;border-top:2px solid var(--navy);padding-left:0}
      .cases-grid,.comment-grid{grid-template-columns:repeat(2,1fr)}
      .knowledge{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:620px){
      :root{--container:calc(100% - 28px)}
      .nav{min-height:68px}
      .nav-links{top:68px}
      .nav-links.open{grid-template-columns:repeat(2,1fr)}
      .brand strong{font-size:17px}
      .hero{padding:64px 0 58px}
      h1{font-size:38px}
      .hero-copy{font-size:16px}
      section{padding:58px 0}
      .section-head{display:block}
      .section-head p{margin-top:12px}
      .service-grid,.cases-grid,.comment-grid,.solution-grid,.faq-grid,.contact-grid{grid-template-columns:1fr}
      .about-list{grid-template-columns:1fr}
      .steps{grid-template-columns:1fr 1fr}
      .knowledge{grid-template-columns:1fr 1fr}
      form{grid-template-columns:1fr}
      .field-full{grid-column:auto}
      .footer-top{display:block}
      .links{justify-content:flex-start;margin-top:20px}
      .float-help{right:14px;bottom:14px}
    }