:root{color-scheme:light;--ink:#18202e;--muted:#616b7a;--paper:#f7f8fc;--white:#fff;--line:#e3e7ef;--violet:#6847d8;--cyan:#0d9fa7;--coral:#df6259;--lime:#b6d650;--shadow:0 14px 38px rgba(28,37,57,.08);--width:1180px}
    *{box-sizing:border-box}
    html{scroll-behavior:smooth;scroll-padding-top:86px}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,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(--width),calc(100% - 40px));margin-inline:auto}
    .site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
    .nav{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .brand{display:flex;align-items:center;gap:10px;font-weight:800;white-space:nowrap}
    .brand img{width:38px;height:38px;object-fit:contain}
    .nav-links{display:flex;align-items:center;gap:0}
    .nav-links a{padding:10px 11px;color:#4d5665;font-size:13px;white-space:nowrap;transition:color .2s}
    .nav-links a:hover{color:var(--violet)}
    .nav-actions{display:flex;align-items:center;gap:10px}
    .nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:6px;cursor:pointer}
    .button{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:12px 18px;border:1px solid transparent;border-radius:5px;font-weight:700;transition:transform .2s,box-shadow .2s,background .2s}
    .button:hover{transform:translateY(-2px);box-shadow:0 9px 20px rgba(64,47,128,.16)}
    .button-primary{background:var(--violet);color:#fff}
    .button-dark{background:var(--ink);color:#fff}
    .button-outline{border-color:#cdd3df;color:var(--ink);background:#fff}
    .hero{position:relative;overflow:hidden;background:#f0eefb;border-bottom:1px solid #e4def8}
    .hero::before{content:"";position:absolute;inset:0;background:linear-gradient(112deg,transparent 0 38%,rgba(104,71,216,.07) 38% 39%,transparent 39% 66%,rgba(13,159,167,.08) 66% 67%,transparent 67%);pointer-events:none}
    .hero::after{content:"";position:absolute;width:380px;height:380px;border:1px solid rgba(104,71,216,.18);border-radius:50%;right:-100px;top:-175px;box-shadow:0 0 0 28px rgba(104,71,216,.025),0 0 0 58px rgba(13,159,167,.025)}
    .hero-inner{position:relative;z-index:1;padding:70px 0 40px}
    .hero-copy{max-width:800px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:#5140a2;font-size:13px;font-weight:800;letter-spacing:0}
    .eyebrow::before{content:"";width:24px;height:2px;background:var(--cyan)}
    h1{max-width:780px;margin:16px 0 17px;font-size:clamp(38px,6vw,64px);line-height:1.12;letter-spacing:0}
    .hero-copy p{max-width:660px;margin:0;color:#4d5665;font-size:17px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
    .hero-note{margin-top:18px;color:#606a79;font-size:13px}
    .hero-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:54px;border-top:1px solid #d9d4eb}
    .hero-stat{padding:20px 20px 2px 0}
    .hero-stat+.hero-stat{padding-left:20px;border-left:1px solid #d9d4eb}
    .hero-stat strong{display:block;font-size:21px;line-height:1.3}
    .hero-stat span{color:var(--muted);font-size:13px}
    main section{padding:68px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:28px;margin-bottom:28px}
    .section-head h2{margin:0;font-size:32px;line-height:1.2;letter-spacing:0}
    .section-head p{max-width:570px;margin:8px 0 0;color:var(--muted)}
    .kicker{margin:0 0 10px;color:var(--violet);font-size:12px;font-weight:800;text-transform:uppercase}
    .about-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
    .about-copy{max-width:620px}
    .about-copy p{color:var(--muted)}
    .capability-list{display:grid;grid-template-columns:1fr 1fr;gap:0 24px;margin:24px 0 0;padding:0;list-style:none}
    .capability-list li{padding:12px 0;border-top:1px solid var(--line);font-weight:650}
    .capability-list li::before{content:"+";margin-right:10px;color:var(--cyan);font-weight:800}
    .model-panel{padding:24px 0;border-top:2px solid var(--ink);border-bottom:1px solid var(--line)}
    .model-panel h3{margin:0 0 14px;font-size:18px}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
    .tag-cloud span{padding:6px 10px;border:1px solid #dfe3ec;background:#fff;color:#445064;font-size:13px}
    .section-tint{background:#f0f3f8;border-top:1px solid #e6e9f0;border-bottom:1px solid #e6e9f0}
    .service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:#dfe3eb;border:1px solid #dfe3eb}
    .service-item{min-height:182px;padding:22px;background:#fff;transition:transform .2s,box-shadow .2s;position:relative}
    .service-item:hover{z-index:1;transform:translateY(-3px);box-shadow:var(--shadow)}
    .service-item .index{display:block;margin-bottom:22px;color:var(--cyan);font-size:12px;font-weight:800}
    .service-item h3{margin:0 0 8px;font-size:17px}
    .service-item p{margin:0;color:var(--muted);font-size:13px}
    .service-footer{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-top:24px}
    .service-footer p{margin:0;color:var(--muted);font-size:14px}
    .workflow{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
    .step{padding:22px 22px 22px 0;position:relative}
    .step+.step{padding-left:22px;border-left:1px solid var(--line)}
    .step-no{color:var(--violet);font-size:13px;font-weight:800}
    .step h3{margin:9px 0 6px;font-size:17px}
    .step p{margin:0;color:var(--muted);font-size:14px}
    .sector-row{display:grid;grid-template-columns:170px 1fr;gap:28px;padding:20px 0;border-top:1px solid var(--line)}
    .sector-row h3{margin:0;font-size:16px}
    .sector-row p{margin:0;color:var(--muted)}
    .compare-layout{display:grid;grid-template-columns:250px 1fr;gap:32px;align-items:start}
    .rating{padding:22px;background:#202a3b;color:#fff}
    .rating .label{color:#d7dbe5;font-size:13px}
    .rating strong{display:block;margin:8px 0;font-size:42px;line-height:1}
    .rating .stars{color:#e7cb5c;letter-spacing:0}
    .rating p{margin:12px 0 0;color:#d7dbe5;font-size:13px}
    .table-wrap{overflow-x:auto;border:1px solid var(--line);background:#fff}
    table{width:100%;min-width:660px;border-collapse:collapse;text-align:left}
    th,td{padding:13px 15px;border-bottom:1px solid var(--line);vertical-align:top}
    th{background:#f1f3f8;font-size:13px}
    td{font-size:14px}
    td:last-child{color:#246b61;font-weight:700}
    .reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:24px 28px}
    .review{padding:20px 0;border-top:2px solid var(--cyan)}
    .review blockquote{margin:0;color:#384253}
    .review footer{margin-top:14px;color:var(--muted);font-size:13px}
    .review strong{display:block;color:var(--ink);font-size:14px}
    .case-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px}
    .case{display:grid;grid-template-columns:42% 1fr;gap:18px;align-items:center;padding:14px;background:#fff;border:1px solid var(--line)}
    .case-media{overflow:hidden;background:#eceff5}
    .case-media img{display:block;width:100%;height:auto;aspect-ratio:16/10;object-fit:cover}
    .case h3{margin:0 0 7px;font-size:17px}
    .case p{margin:0;color:var(--muted);font-size:13px}
    .articles{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
    .article{display:flex;min-height:108px;flex-direction:column;justify-content:space-between;padding:16px;background:#fff;border-top:2px solid var(--violet)}
    .article span{color:var(--muted);font-size:12px}
    .article strong{font-size:14px}
    .faq-list{border-top:1px solid var(--line)}
    details{border-bottom:1px solid var(--line)}
    summary{position:relative;padding:17px 38px 17px 0;cursor:pointer;font-weight:700;list-style:none}
    summary::-webkit-details-marker{display:none}
    summary::after{content:"+";position:absolute;right:4px;top:14px;color:var(--violet);font-size:22px;font-weight:400}
    details[open] summary::after{content:"−"}
    details p{max-width:850px;margin:0;padding:0 0 18px;color:var(--muted)}
    .contact{background:#202a3b;color:#fff}
    .contact .section-head p,.contact .kicker{color:#c4cbe0}
    .contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:52px;align-items:start}
    .contact form{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .field{display:grid;gap:6px}
    .field-wide{grid-column:1/-1}
    .field label{color:#e2e6ee;font-size:13px}
    .field input,.field select,.field textarea{width:100%;border:1px solid #566174;border-radius:3px;background:#2b3649;color:#fff;padding:11px 12px;outline:none}
    .field input:focus,.field select:focus,.field textarea:focus{border-color:#97a7ff}
    .field select option{color:#18202e}
    .field textarea{min-height:115px;resize:vertical}
    .field input::placeholder,.field textarea::placeholder{color:#a8b0bf}
    .contact-info{padding-top:4px}
    .contact-info h3{margin:0 0 12px;font-size:20px}
    .contact-info p{margin:7px 0;color:#d1d7e2}
    .contact-info a{color:#fff;text-decoration:underline;text-underline-offset:3px}
    .qr{width:124px;margin-top:18px;padding:7px;background:#fff}
    .qr img{display:block;width:100%}
    .join-line{margin-top:24px;padding-top:20px;border-top:1px solid #4a5669}
    .join-line p{margin:5px 0 13px;color:#d1d7e2}
    .footer{background:#f7f8fc;color:#354052;border-top:1px solid var(--line)}
    .footer-main{display:grid;grid-template-columns:1fr 2fr;gap:32px;padding:28px 0}
    .footer-brand{font-weight:800}
    .footer-brand p{max-width:330px;margin:8px 0;color:var(--muted);font-size:13px;font-weight:400}
    .friend-links{display:flex;flex-wrap:wrap;align-content:start;gap:8px 18px}
    .friend-links a{color:#475367;font-size:13px}
    .friend-links a:hover{color:var(--violet)}
    .copyright{padding:14px 0;border-top:1px solid var(--line);color:#657082;font-size:12px}
    .float-contact{position:fixed;right:18px;bottom:22px;z-index:15;display:grid;gap:8px}
    .float-contact a,.back-top{display:flex;width:46px;height:46px;align-items:center;justify-content:center;border:1px solid #d9deea;border-radius:50%;background:#fff;color:var(--ink);box-shadow:0 6px 18px rgba(24,32,46,.12);font-size:12px;font-weight:800}
    .back-top{cursor:pointer}
    .reveal{opacity:0;transform:translateY(14px);transition:opacity .55s,transform .55s}
    .reveal.is-visible{opacity:1;transform:translateY(0)}
    @media(max-width:1000px){
      .nav-links{gap:0}
      .nav-links a{padding-inline:7px;font-size:12px}
      .nav-actions .button{padding:10px 12px}
      .service-grid{grid-template-columns:repeat(3,1fr)}
      .articles{grid-template-columns:repeat(3,1fr)}
    }
    @media(max-width:760px){
      .container{width:min(var(--width),calc(100% - 32px))}
      .nav{min-height:64px}
      .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
      .nav-actions .button{display:none}
      .nav-links{display:none;position:absolute;top:64px;left:0;right:0;padding:10px 16px 16px;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 14px 22px rgba(24,32,46,.08);flex-wrap:wrap}
      .nav-links.open{display:flex}
      .nav-links a{width:33.333%;padding:10px 8px;font-size:13px}
      .hero-inner{padding-top:54px}
      .hero-strip{grid-template-columns:repeat(2,1fr);margin-top:38px}
      .hero-stat{padding:16px 10px 12px 0}
      .hero-stat:nth-child(3){padding-left:0;border-left:0}
      .hero-stat:nth-child(4){padding-left:16px}
      main section{padding:52px 0}
      .section-head{display:block}
      .section-head h2{font-size:28px}
      .about-grid,.contact-grid{grid-template-columns:1fr;gap:30px}
      .service-grid{grid-template-columns:repeat(2,1fr)}
      .workflow{grid-template-columns:repeat(2,1fr)}
      .step:nth-child(3){padding-left:0;border-left:0;border-top:1px solid var(--line)}
      .step:nth-child(4){border-top:1px solid var(--line)}
      .sector-row{grid-template-columns:120px 1fr;gap:16px}
      .compare-layout{grid-template-columns:1fr}
      .rating{display:grid;grid-template-columns:auto 1fr;align-items:center;column-gap:14px}
      .rating strong{grid-row:span 2}
      .rating p{grid-column:1/-1}
      .reviews{grid-template-columns:repeat(2,1fr)}
      .case-grid{grid-template-columns:1fr}
      .articles{grid-template-columns:repeat(2,1fr)}
      .footer-main{grid-template-columns:1fr}
    }
    @media(max-width:480px){
      .brand img{width:32px;height:32px}
      .hero-copy p{font-size:15px}
      .hero-actions .button{width:100%}
      .capability-list{grid-template-columns:1fr}
      .service-grid{grid-template-columns:1fr 1fr}
      .service-item{min-height:174px;padding:16px}
      .workflow{grid-template-columns:1fr}
      .step,.step+.step{padding:17px 0;border-left:0;border-top:1px solid var(--line)}
      .step:first-child{border-top:0}
      .sector-row{grid-template-columns:1fr;gap:4px}
      .reviews{grid-template-columns:1fr}
      .case{grid-template-columns:1fr}
      .case-media img{aspect-ratio:16/9}
      .articles{grid-template-columns:1fr 1fr}
      .contact form{grid-template-columns:1fr}
      .field-wide{grid-column:auto}
      .nav-links a{width:50%}
      .float-contact{right:10px;bottom:12px}
    }
    @media(prefers-reduced-motion:reduce){
      *,*::before,*::after{scroll-behavior:auto!important;transition:none!important;animation:none!important}
      .reveal{opacity:1;transform:none}
    }