:root{--blue:#174ed1;--blue-dark:#12379c;--cyan:#39b9df;--ink:#15233b;--muted:#596a83;--line:#dce5f2;--paper:#f5f8ff;--white:#fff;--green:#147c65;--max:1180px}
    *{box-sizing:border-box}
    html{scroll-behavior:smooth;scroll-padding-top:82px}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.7}
    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(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
    .header-row{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:22px}
    .brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;font-size:18px;font-weight:800;color:#173c9f}
    .brand img{width:38px;max-height:38px;object-fit:contain}
    .nav-links{display:flex;align-items:center;gap:0;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:12px;color:#42536c;padding:7px 8px;border-radius:5px;white-space:nowrap}
    .nav-links a:hover,.nav-links a:focus-visible{background:#edf3ff;color:var(--blue)}
    .header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
    .menu-toggle{display:none;background:#fff;border:1px solid var(--line);border-radius:6px;padding:8px 11px;color:var(--ink);cursor:pointer}
    .button{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 17px;border:1px solid var(--blue);border-radius:5px;background:var(--blue);color:#fff;font-weight:700;transition:transform .2s,background .2s,box-shadow .2s}
    .button:hover{transform:translateY(-2px);background:var(--blue-dark);box-shadow:0 8px 20px #174ed12b}
    .button.secondary{background:#fff;color:var(--blue)}
    .button.small{padding:8px 12px;font-size:13px}
    .hero{overflow:hidden;background:linear-gradient(125deg,#f4f8ff 0%,#e6efff 50%,#e9f8fb 100%);border-bottom:1px solid #d8e5f8}
    .hero-inner{padding:68px 0 54px;display:grid;grid-template-columns:minmax(0,1.18fr) minmax(280px,.82fr);gap:45px;align-items:center}
    .eyebrow{display:inline-flex;align-items:center;gap:9px;color:#1749bb;font-size:13px;font-weight:800;letter-spacing:0}
    .eyebrow:before{content:"";width:22px;height:2px;background:var(--cyan)}
    h1{max-width:720px;margin:15px 0 16px;font-size:clamp(36px,5vw,58px);line-height:1.13;letter-spacing:0}
    .hero-copy{max-width:650px;margin:0;color:#42536c;font-size:17px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:27px}
    .hero-note{margin-top:19px;color:#64748b;font-size:13px}
    .hero-panel{position:relative;padding:25px;background:#fff;border:1px solid #d7e4f5;border-radius:8px;box-shadow:0 18px 45px #17429b12}
    .hero-panel:after{content:"";position:absolute;z-index:0;right:20px;top:18px;width:78px;height:5px;background:var(--cyan)}
    .panel-label{margin:0 0 6px;color:#60718b;font-size:12px;font-weight:700}
    .hero-panel h2{margin:0 0 19px;font-size:21px}
    .week{display:grid;grid-template-columns:repeat(5,1fr);gap:7px}
    .day{min-width:0;padding:10px 6px;background:#f4f7fc;border-top:3px solid #b8c9e2;border-radius:3px;text-align:center}
    .day:nth-child(2),.day:nth-child(4){border-color:var(--blue);background:#edf3ff}
    .day b{display:block;font-size:12px}
    .day span{display:block;margin-top:8px;color:#60718b;font-size:10px;line-height:1.35}
    .panel-foot{margin:17px 0 0;padding-top:14px;border-top:1px solid var(--line);color:#52627a;font-size:13px}
    .metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:-1px;background:#fff;border-bottom:1px solid var(--line)}
    .metric{padding:22px 18px;text-align:center;border-right:1px solid var(--line)}
    .metric:last-child{border:0}
    .metric strong{display:block;color:#1749bb;font-size:23px}
    .metric span{color:#617089;font-size:13px}
    main section{padding:66px 0}
    .section-head{max-width:760px;margin:0 0 30px}
    .section-head.center{text-align:center;margin-inline:auto}
    .section-head h2{margin:8px 0 10px;font-size:32px;line-height:1.25;letter-spacing:0}
    .section-head p{margin:0;color:var(--muted)}
    .kicker{color:#1b55c8;font-size:12px;font-weight:800;text-transform:uppercase;letter-spacing:1px}
    .intro-grid{display:grid;grid-template-columns:1fr 1fr;gap:42px;align-items:start}
    .intro-copy p{color:var(--muted)}
    .feature-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    .feature{padding:17px 16px;border-left:3px solid var(--cyan);background:#fff}
    .feature h3{margin:0 0 5px;font-size:16px}
    .feature p{margin:0;color:var(--muted);font-size:13px}
    .band{background:#eaf1fc;border-block:1px solid #dce6f5}
    .service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .service{padding:20px;background:#fff;border:1px solid var(--line);border-radius:5px;transition:transform .2s,border-color .2s,box-shadow .2s}
    .service:hover{transform:translateY(-3px);border-color:#aac2ec;box-shadow:0 12px 24px #203e7410}
    .service h3{margin:0 0 7px;font-size:17px}
    .service p{margin:0;color:var(--muted);font-size:13px}
    .service .tag{display:inline-block;margin-top:13px;color:#1650c2;font-size:11px;font-weight:700}
    .workflow{display:grid;grid-template-columns:repeat(5,1fr);gap:0;border-top:1px solid #cbd8eb;border-bottom:1px solid #cbd8eb}
    .step{padding:22px 16px 24px;border-right:1px solid #cbd8eb}
    .step:last-child{border:0}
    .step b{display:block;color:#1d58c9;font-size:13px}
    .step h3{margin:10px 0 6px;font-size:16px}
    .step p{margin:0;color:var(--muted);font-size:13px}
    .split{display:grid;grid-template-columns:1fr 1fr;gap:35px;align-items:start}
    .industry-list{display:grid;grid-template-columns:1fr 1fr;gap:10px}
    .industry-list div{padding:14px;background:#fff;border:1px solid var(--line);font-size:14px;font-weight:700}
    .network{padding:23px;background:#1749bb;color:#fff;border-radius:6px}
    .network h3{margin:0 0 9px;font-size:20px}
    .network p{margin:0;color:#e2edff;font-size:14px}
    .network .channels{display:flex;gap:8px;flex-wrap:wrap;margin-top:17px}
    .channels span{padding:6px 9px;border:1px solid #ffffff66;border-radius:3px;color:#fff;font-size:12px}
    .case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}
    .case{padding:19px;background:#fff;border-bottom:3px solid var(--cyan)}
    .case h3{margin:0 0 8px;font-size:17px}
    .case p{margin:0;color:var(--muted);font-size:13px}
    .media-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:22px}
    .media-frame{margin:0;overflow:hidden;background:#e0e8f5;border:1px solid var(--line);aspect-ratio:16/7}
    .media-frame img{width:100%;height:100%;object-fit:cover;display:block}
    .review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:13px}
    .review{padding:18px 19px;background:#fff;border:1px solid var(--line)}
    .review blockquote{margin:0;color:#34455e;font-size:14px}
    .review cite{display:block;margin-top:13px;color:#1749bb;font-size:12px;font-style:normal;font-weight:700}
    .score-panel{display:flex;align-items:center;gap:25px;padding:23px 25px;margin-bottom:19px;background:#eaf2ff;border-left:4px solid var(--blue)}
    .score{color:#1749bb;font-size:37px;font-weight:800;line-height:1}
    .stars{color:#e2a319;font-size:19px;letter-spacing:2px}
    .score-panel p{margin:5px 0 0;color:var(--muted);font-size:13px}
    .table-wrap{overflow-x:auto;background:#fff;border:1px solid var(--line)}
    table{width:100%;min-width:720px;border-collapse:collapse;text-align:left}
    th,td{padding:13px 15px;border-bottom:1px solid var(--line);font-size:13px}
    th{background:#edf3fc;color:#263c5d}
    td:first-child{font-weight:700}
    .good{color:#147c65;font-weight:700}
    .price-strip{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:22px 24px;background:#fff;border:1px solid var(--line)}
    .price-strip h3{margin:0 0 4px}
    .price-strip p{margin:0;color:var(--muted);font-size:13px}
    .tags{display:flex;gap:9px;flex-wrap:wrap}
    .tags span{padding:7px 11px;border:1px solid #c9d8ed;background:#fff;color:#3f536d;border-radius:3px;font-size:12px}
    .faq-list{max-width:900px;margin-inline:auto}
    details{border-bottom:1px solid #ced9e8;background:#fff}
    summary{position:relative;padding:16px 42px 16px 17px;cursor:pointer;list-style:none;font-weight:700}
    summary::-webkit-details-marker{display:none}
    summary:after{content:"+";position:absolute;right:17px;color:var(--blue);font-size:20px;top:10px}
    details[open] summary:after{content:"−"}
    details p{margin:0;padding:0 17px 17px;color:var(--muted);font-size:14px}
    .article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:13px}
    .article{padding:18px;background:#fff;border:1px solid var(--line)}
    .article h3{margin:0 0 9px;font-size:16px}
    .article p{margin:0;color:var(--muted);font-size:13px}
    .article a{display:inline-block;margin-top:12px;color:var(--blue);font-size:13px;font-weight:700}
    .form-area{display:grid;grid-template-columns:.8fr 1.2fr;gap:40px;align-items:start}
    .contact-copy h2{margin:8px 0 12px;font-size:31px;line-height:1.25}
    .contact-copy p{color:var(--muted)}
    .contact-lines{margin-top:20px;color:#34455e;font-size:14px}
    .contact-lines p{margin:7px 0}
    .form{display:grid;grid-template-columns:1fr 1fr;gap:13px;padding:22px;background:#fff;border:1px solid var(--line)}
    .field{display:flex;flex-direction:column;gap:5px}
    .field.full{grid-column:1/-1}
    .field label{font-size:12px;font-weight:700;color:#41536c}
    .field input,.field select,.field textarea{width:100%;padding:10px 11px;border:1px solid #cbd7e6;border-radius:4px;background:#fff;color:var(--ink)}
    .field textarea{min-height:100px;resize:vertical}
    .form .button{justify-self:start}
    .footer{background:#e9eff9;border-top:1px solid #d2deef;color:#26374f}
    .footer-main{display:grid;grid-template-columns:1fr 1fr;gap:30px;padding:28px 0}
    .footer p{margin:5px 0;color:#53647b;font-size:13px}
    .footer-links{display:flex;justify-content:flex-end;align-content:flex-start;gap:8px 15px;flex-wrap:wrap}
    .footer-links a{color:#244b93;font-size:13px}
    .copyright{padding:13px 0;border-top:1px solid #ccd8e9;color:#607089;font-size:12px}
    .float-links{position:fixed;right:16px;bottom:20px;z-index:15;display:grid;gap:8px}
    .float-links a{display:grid;place-items:center;width:44px;height:44px;border-radius:50%;background:#174ed1;color:#fff;box-shadow:0 5px 14px #102c6a33;font-size:12px;font-weight:700}
    .float-links a:last-child{background:#fff;color:#174ed1;border:1px solid #ccd9ed}
    .reveal{opacity:0;transform:translateY(12px);transition:opacity .55s ease,transform .55s ease}
    .reveal.visible{opacity:1;transform:translateY(0)}
    @media(max-width:1050px){
      .nav-links{display:none;position:absolute;left:20px;right:20px;top:72px;padding:12px;background:#fff;border:1px solid var(--line);box-shadow:0 12px 24px #15233b18;justify-content:flex-start}
      .nav-links.open{display:flex}
      .nav-links a{font-size:13px}
      .menu-toggle{display:inline-flex}
      .header-row{gap:10px}
    }
    @media(max-width:760px){
      .container{width:min(var(--max),calc(100% - 30px))}
      .header-row{min-height:64px}
      .nav-links{top:64px;left:15px;right:15px}
      .header-actions>.button{display:none}
      .hero-inner{grid-template-columns:1fr;gap:28px;padding:48px 0 38px}
      .hero-panel{max-width:540px}
      .metrics{grid-template-columns:repeat(2,1fr)}
      .metric:nth-child(2){border-right:0}
      .metric:nth-child(-n+2){border-bottom:1px solid var(--line)}
      main section{padding:48px 0}
      .intro-grid,.split,.form-area{grid-template-columns:1fr;gap:24px}
      .service-grid,.case-grid,.review-grid,.article-grid{grid-template-columns:repeat(2,1fr)}
      .workflow{grid-template-columns:1fr 1fr}
      .step:nth-child(2n){border-right:0}
      .step:last-child{grid-column:1/-1}
      .footer-main{grid-template-columns:1fr}
      .footer-links{justify-content:flex-start}
    }
    @media(max-width:480px){
      h1{font-size:36px}
      .section-head h2,.contact-copy h2{font-size:27px}
      .service-grid,.case-grid,.review-grid,.article-grid,.feature-list,.industry-list{grid-template-columns:1fr}
      .workflow{grid-template-columns:1fr}
      .step,.step:nth-child(2n){border-right:0;border-bottom:1px solid #cbd8eb}
      .step:last-child{grid-column:auto;border-bottom:0}
      .score-panel{align-items:flex-start;gap:14px}
      .price-strip{align-items:flex-start;flex-direction:column}
      .form{grid-template-columns:1fr}
      .field.full{grid-column:auto}
      .media-row{grid-template-columns:1fr}
      .week{gap:4px}
      .day{padding:8px 3px}
      .float-links{right:10px;bottom:12px}
    }
    @media(prefers-reduced-motion:reduce){
      *,*::before,*::after{scroll-behavior:auto!important;animation-duration:.01ms!important;transition-duration:.01ms!important}
      .reveal{opacity:1;transform:none}
    }