:root{--ink:#172b2a;--muted:#647674;--green:#147b68;--green-dark:#0c5e50;--lime:#d6f46a;--paper:#f7faf9;--white:#fff;--line:#dce8e4;--coral:#e87658;--blue:#dceefa;--shadow:0 16px 40px rgba(23,65,57,.08);--max:1160px}
    *{box-sizing:border-box}
    html{scroll-behavior:smooth;scroll-padding-top:86px}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:Arial,"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}
    .site-header{position:sticky;top:0;z-index:20;background:rgba(247,250,249,.96);border-bottom:1px solid rgba(220,232,228,.9);backdrop-filter:blur(14px)}
    .nav-bar{min-height:74px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
    .brand img{width:42px;height:42px;object-fit:contain}
    .brand-name{font-weight:800;font-size:17px;line-height:1.2}
    .brand-name small{display:block;color:var(--muted);font-size:10px;font-weight:600;margin-top:3px}
    .nav-links{display:flex;align-items:center;gap:0}
    .nav-links a{padding:10px 11px;color:#455956;font-size:13px;white-space:nowrap;border-radius:6px;transition:background .2s,color .2s}
    .nav-links a:hover{background:#e6f2ee;color:var(--green-dark)}
    .nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
    .nav-visit,.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:6px;padding:11px 17px;background:var(--green);color:#fff;font-weight:700;transition:transform .2s,background .2s,box-shadow .2s;cursor:pointer}
    .nav-visit{font-size:13px;padding:10px 14px}
    .nav-visit:hover,.button:hover{background:var(--green-dark);transform:translateY(-2px);box-shadow:0 8px 18px rgba(20,123,104,.2)}
    .menu-toggle{display:none;background:#fff;border:1px solid var(--line);border-radius:6px;width:42px;height:42px;color:var(--ink);cursor:pointer}
    .hero{position:relative;overflow:hidden;padding:80px 0 66px;background:#e8f5ef;border-bottom:1px solid var(--line)}
    .hero:before{content:"";position:absolute;inset:0;background:linear-gradient(115deg,transparent 52%,rgba(202,238,221,.72) 52%,rgba(202,238,221,.72) 70%,transparent 70%);pointer-events:none}
    .hero:after{content:"";position:absolute;right:max(3vw,calc((100vw - var(--max))/2));top:70px;width:172px;height:172px;border:1px solid rgba(20,123,104,.18);border-radius:50%;box-shadow:0 0 0 28px rgba(20,123,104,.035),0 0 0 56px rgba(20,123,104,.025);pointer-events:none}
    .hero-inner{position:relative;z-index:1;max-width:780px}
    .eyebrow{display:inline-flex;align-items:center;gap:9px;color:var(--green-dark);font-size:13px;font-weight:800;letter-spacing:.08em}
    .eyebrow:before{content:"";width:25px;height:2px;background:var(--coral)}
    h1{font-size:clamp(38px,5vw,64px);line-height:1.12;margin:18px 0 18px;max-width:760px;letter-spacing:0}
    .hero p{max-width:650px;color:#425956;font-size:17px;margin:0 0 26px}
    .hero-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
    .button.secondary{background:#fff;color:var(--green-dark);border:1px solid #b9d6cc}
    .button.secondary:hover{background:#f4fbf8}
    .hero-meta{display:flex;align-items:center;gap:22px;flex-wrap:wrap;margin-top:30px;color:#516763;font-size:13px}
    .hero-meta span{display:flex;align-items:center;gap:8px}
    .dot{width:8px;height:8px;border-radius:50%;background:var(--coral);display:inline-block}
    .metrics{position:relative;z-index:2;margin-top:-1px;background:var(--white);border-bottom:1px solid var(--line)}
    .metric-row{display:grid;grid-template-columns:repeat(4,1fr);padding:23px 0}
    .metric{padding:2px 22px;border-right:1px solid var(--line)}
    .metric:first-child{padding-left:0}
    .metric:last-child{border-right:0}
    .metric strong{display:block;font-size:23px;line-height:1.2;color:var(--green-dark)}
    .metric span{font-size:12px;color:var(--muted)}
    section.content-section{padding:76px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:30px}
    .section-head h2{font-size:32px;line-height:1.2;margin:0 0 8px;letter-spacing:0}
    .section-head p{margin:0;color:var(--muted);max-width:640px}
    .kicker{font-size:12px;font-weight:800;color:var(--green);margin-bottom:8px;letter-spacing:.08em}
    .intro-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:52px;align-items:center}
    .intro-copy h2{font-size:34px;line-height:1.25;margin:0 0 16px}
    .intro-copy p{color:var(--muted);margin:0 0 14px}
    .intro-points{display:grid;grid-template-columns:repeat(2,1fr);gap:12px 20px;margin-top:24px}
    .intro-point{display:flex;gap:10px;align-items:flex-start;font-size:14px;font-weight:700}
    .check{display:grid;place-items:center;flex:0 0 22px;height:22px;border-radius:50%;background:#dff2e9;color:var(--green-dark);font-size:13px}
    .model-panel{padding:26px;background:#fff;border:1px solid var(--line);border-radius:8px;box-shadow:var(--shadow)}
    .model-panel h3{margin:0 0 7px;font-size:18px}
    .model-panel p{margin:0 0 18px;color:var(--muted);font-size:13px}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
    .tag{padding:7px 10px;background:#eef6f2;color:#355c53;border:1px solid #dcebe4;border-radius:4px;font-size:12px}
    .service-section{background:#edf5f1}
    .service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .service{background:#fff;border:1px solid #deebe5;border-radius:7px;padding:22px;transition:transform .2s,box-shadow .2s}
    .service:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .service-icon{width:38px;height:38px;display:grid;place-items:center;background:#e4f4eb;color:var(--green-dark);border-radius:6px;font-weight:800;font-size:17px}
    .service h3{font-size:17px;margin:14px 0 6px}
    .service p{font-size:13px;color:var(--muted);margin:0}
    .service-link{display:inline-block;margin-top:13px;color:var(--green-dark);font-size:13px;font-weight:700}
    .workflows{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
    .workflow{padding:24px 22px 24px 0;position:relative}
    .workflow:not(:last-child):after{content:"";position:absolute;right:18px;top:37px;width:26px;height:1px;background:#a9c8bd}
    .step-no{font-size:12px;color:var(--coral);font-weight:800}
    .workflow h3{font-size:16px;margin:8px 0 6px}
    .workflow p{font-size:13px;color:var(--muted);margin:0;max-width:230px}
    .industry-layout{display:grid;grid-template-columns:1fr 1fr;gap:20px}
    .industry-feature{background:var(--green-dark);color:#fff;border-radius:8px;padding:30px}
    .industry-feature h3{font-size:24px;margin:0 0 10px}
    .industry-feature p{color:#d8ebe5;margin:0 0 22px}
    .industry-feature .button{background:var(--lime);color:#18312b}
    .industry-list{display:grid;grid-template-columns:1fr 1fr;gap:10px}
    .industry-list div{background:#fff;border:1px solid var(--line);padding:16px;border-radius:6px;font-weight:700;font-size:14px}
    .industry-list span{display:block;color:var(--muted);font-weight:400;font-size:12px;margin-top:4px}
    .network-band{background:#dff0e8;padding:28px 0}
    .network-row{display:flex;align-items:center;justify-content:space-between;gap:25px}
    .network-row h2{font-size:22px;margin:0}
    .network-row p{font-size:13px;color:#506a63;margin:5px 0 0}
    .network-badges{display:flex;flex-wrap:wrap;gap:8px;justify-content:flex-end}
    .network-badges span{padding:8px 12px;border:1px solid #b9d9cb;background:#f5fbf8;border-radius:4px;font-size:12px;color:#31564c}
    .case-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:16px}
    .case{background:#fff;border:1px solid var(--line);border-radius:7px;overflow:hidden}
    .case img{display:block;width:100%;aspect-ratio:16/9;object-fit:cover}
    .case-body{padding:18px}
    .case-body small{color:var(--green);font-weight:800}
    .case-body h3{font-size:17px;margin:5px 0}
    .case-body p{font-size:13px;color:var(--muted);margin:0}
    .square-case{display:grid;grid-template-columns:.75fr 1fr;align-items:center;gap:20px;margin-top:16px;padding:18px;border:1px solid var(--line);border-radius:7px;background:#fff}
    .square-case img{width:100%;aspect-ratio:1;object-fit:cover;border-radius:4px}
    .square-case h3{margin:0 0 8px;font-size:18px}
    .square-case p{color:var(--muted);margin:0;font-size:13px}
    .comparison{background:#fff;border:1px solid var(--line);border-radius:8px;overflow:hidden}
    .rating-strip{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:22px 25px;background:#eaf5ef;border-bottom:1px solid var(--line)}
    .rating-strip strong{font-size:19px}
    .rating-score{display:flex;align-items:center;gap:12px;color:var(--green-dark)}
    .rating-score b{font-size:30px}
    .stars{color:#d88136;letter-spacing:2px;font-size:19px}
    .table-wrap{overflow-x:auto}
    table{width:100%;border-collapse:collapse;min-width:680px}
    th,td{text-align:left;padding:14px 18px;border-bottom:1px solid #e8efec;font-size:13px}
    th{background:#fbfdfc;color:#536963;font-size:12px}
    td:first-child{font-weight:700}
    .positive{color:var(--green-dark);font-weight:700}
    .reviews-section{background:#f1f6f4}
    .review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .review{padding:21px;background:#fff;border-left:3px solid #91cbb0;border-radius:0 6px 6px 0}
    .review p{font-size:14px;margin:0 0 17px;color:#405651}
    .review-foot{display:flex;align-items:center;justify-content:space-between;gap:10px}
    .review-foot strong{font-size:13px}
    .review-foot span{font-size:11px;color:var(--muted)}
    .review-stars{color:#d88136;font-size:12px}
    .article-list{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
    .article{background:#fff;padding:18px;border:1px solid var(--line);border-radius:6px;transition:border-color .2s,transform .2s}
    .article:hover{border-color:#9dcbbb;transform:translateY(-2px)}
    .article small{color:var(--green);font-weight:700}
    .article h3{font-size:15px;margin:8px 0}
    .article span{font-size:12px;color:var(--muted)}
    .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 24px}
    details{border-bottom:1px solid var(--line);padding:17px 0}
    summary{cursor:pointer;font-weight:700;list-style:none;display:flex;justify-content:space-between;gap:14px}
    summary::-webkit-details-marker{display:none}
    summary:after{content:"+";font-size:20px;line-height:1;color:var(--green)}
    details[open] summary:after{content:"−"}
    details p{color:var(--muted);font-size:13px;margin:12px 0 0}
    .contact-section{background:#e8f4ee}
    .contact-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:34px;align-items:start}
    .contact-info h2{font-size:30px;line-height:1.2;margin:0 0 12px}
    .contact-info>p{color:var(--muted);margin:0 0 24px}
    .contact-lines{display:grid;gap:12px}
    .contact-line{padding-bottom:12px;border-bottom:1px solid #cfe2d8;font-size:14px}
    .contact-line strong{display:block;font-size:12px;color:#668079;margin-bottom:3px}
    .form-panel{background:#fff;border:1px solid #d8e8df;border-radius:8px;padding:24px}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .field{display:grid;gap:6px}
    .field.full{grid-column:1/-1}
    .field label{font-size:12px;font-weight:700;color:#4a625c}
    .field input,.field select,.field textarea{width:100%;border:1px solid #d7e4de;border-radius:5px;padding:11px 12px;background:#fbfdfc;color:var(--ink);outline:none}
    .field input:focus,.field select:focus,.field textarea:focus{border-color:var(--green);box-shadow:0 0 0 3px rgba(20,123,104,.1)}
    .field textarea{resize:vertical;min-height:105px}
    .form-note{font-size:11px;color:var(--muted);margin:12px 0}
    .footer{background:#e3eeea;color:#243c36;border-top:1px solid #d2e1da;padding:28px 0 20px}
    .footer-top{display:flex;align-items:flex-start;justify-content:space-between;gap:30px;padding-bottom:22px}
    .footer-brand{max-width:350px}
    .footer-brand p{font-size:12px;color:#526b63;margin:10px 0 0}
    .footer-links{display:flex;flex-wrap:wrap;gap:8px 18px;justify-content:flex-end;max-width:650px}
    .footer-links a{font-size:12px;color:#365950}
    .footer-bottom{border-top:1px solid #cdded6;padding-top:14px;display:flex;align-items:center;justify-content:space-between;gap:15px;color:#63776f;font-size:11px}
    .floating-contact{position:fixed;z-index:15;right:18px;bottom:22px;display:flex;flex-direction:column;gap:8px}
    .float-link{position:relative;width:48px;height:48px;display:grid;place-items:center;border-radius:50%;background:var(--green);color:#fff;box-shadow:0 7px 18px rgba(20,123,104,.25);font-size:18px;font-weight:800;transition:transform .2s}
    .float-link:hover{transform:translateY(-3px)}
    .float-tip{position:absolute;right:57px;white-space:nowrap;background:#173a32;color:#fff;padding:6px 9px;border-radius:4px;font-size:11px;opacity:0;pointer-events:none;transition:opacity .2s}
    .float-link:hover .float-tip{opacity:1}
    .to-top{background:#fff;color:var(--green-dark);border:1px solid var(--line)}
    .reveal{opacity:0;transform:translateY(14px);transition:opacity .55s ease,transform .55s ease}
    .reveal.visible{opacity:1;transform:translateY(0)}
    @media(max-width:1000px){
      .nav-links a{padding-inline:7px;font-size:12px}
      .nav-actions .nav-visit{display:none}
      .intro-layout{gap:28px}
    }
    @media(max-width:780px){
      .container{width:min(var(--max),calc(100% - 32px))}
      .nav-bar{min-height:66px}
      .menu-toggle{display:grid;place-items:center}
      .nav-links{display:none;position:absolute;top:65px;left:0;right:0;background:var(--paper);padding:12px 16px 16px;border-bottom:1px solid var(--line);box-shadow:0 12px 18px rgba(24,58,49,.08);flex-wrap:wrap}
      .nav-links.open{display:flex}
      .nav-links a{width:33.333%;padding:10px 8px}
      .nav-actions{margin-left:auto}
      .hero{padding:61px 0 50px}
      .hero:after{right:-65px;top:44px;width:130px;height:130px}
      .hero-inner{max-width:620px}
      .hero p{font-size:15px}
      .metric-row{grid-template-columns:repeat(2,1fr);gap:16px 0}
      .metric:nth-child(2){border-right:0}
      .metric:nth-child(3){padding-left:0}
      section.content-section{padding:58px 0}
      .intro-layout,.contact-layout{grid-template-columns:1fr}
      .service-grid{grid-template-columns:repeat(2,1fr)}
      .case-grid{grid-template-columns:1fr 1fr}
      .case:last-child{grid-column:1/-1}
      .workflow{padding-right:12px}
      .workflow:not(:last-child):after{right:5px;width:16px}
      .review-grid{grid-template-columns:1fr 1fr}
      .network-row{align-items:flex-start;flex-direction:column}
      .network-badges{justify-content:flex-start}
      .footer-top{flex-direction:column}
      .footer-links{justify-content:flex-start}
    }
    @media(max-width:520px){
      .container{width:calc(100% - 28px)}
      .brand img{width:36px;height:36px}
      .brand-name{font-size:15px}
      .hero{padding:52px 0 43px}
      h1{font-size:40px}
      .hero-meta{gap:10px 16px}
      .section-head{display:block}
      .section-head h2,.intro-copy h2{font-size:27px}
      .section-head p{margin-top:8px}
      .intro-points{grid-template-columns:1fr}
      .service-grid,.case-grid,.review-grid,.article-list,.faq-grid{grid-template-columns:1fr}
      .case:last-child{grid-column:auto}
      .workflows{grid-template-columns:1fr 1fr}
      .workflow:nth-child(2):after{display:none}
      .industry-layout{grid-template-columns:1fr}
      .industry-list{grid-template-columns:1fr 1fr}
      .square-case{grid-template-columns:1fr}
      .square-case img{max-width:220px}
      .rating-strip{align-items:flex-start;flex-direction:column}
      .form-grid{grid-template-columns:1fr}
      .field.full{grid-column:auto}
      .footer-bottom{align-items:flex-start;flex-direction:column}
      .floating-contact{right:12px;bottom:14px}
      .float-link{width:43px;height:43px}
      .nav-links a{width:50%}
    }
    @media(prefers-reduced-motion:reduce){
      *,*::before,*::after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important}
      .reveal{opacity:1;transform:none}
    }