:root{
      --ink:#17233d;
      --muted:#647089;
      --paper:#fffaf5;
      --white:#ffffff;
      --line:#e9e4df;
      --orange:#ff7447;
      --yellow:#f5c84b;
      --mint:#63c7b2;
      --blue:#5b80dc;
      --pink:#ef8dab;
      --navy:#192640;
      --shadow:0 16px 42px rgba(39,45,72,.10);
      --radius:18px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:Arial,"Microsoft YaHei","PingFang SC",sans-serif;line-height:1.7}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;height:auto;display:block}
    .container{width:min(1180px,calc(100% - 40px));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:20;background:rgba(255,250,245,.94);border-bottom:1px solid rgba(233,228,223,.85);backdrop-filter:blur(12px)}
    .nav{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .brand{display:flex;align-items:center;gap:12px;min-width:180px;font-weight:800;font-size:19px}
    .brand img{width:42px;height:42px;object-fit:contain}
    .nav-links{display:flex;align-items:center;justify-content:flex-end;gap:0;flex-wrap:wrap}
    .nav-links a{padding:9px 10px;font-size:13px;color:#4b5870;transition:.25s}
    .nav-links a:hover{color:var(--orange)}
    .nav-cta,.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:10px;padding:12px 18px;font-weight:700;cursor:pointer;transition:transform .25s,box-shadow .25s,background .25s}
    .nav-cta{background:var(--orange);color:#fff;white-space:nowrap}
    .button{background:var(--orange);color:#fff;box-shadow:0 8px 20px rgba(255,116,71,.2)}
    .button:hover,.nav-cta:hover{transform:translateY(-2px);box-shadow:0 12px 25px rgba(255,116,71,.3)}
    .button.secondary{background:var(--navy)}
    .button.light{background:#fff;color:var(--navy);border:1px solid var(--line);box-shadow:none}
    .menu-toggle{display:none;background:none;border:0;font-size:25px;color:var(--ink)}
    .hero{position:relative;overflow:hidden;padding:86px 0 70px;background:#fff0df}
    .hero:before,.hero:after{content:"";position:absolute;pointer-events:none}
    .hero:before{width:240px;height:240px;right:7%;top:35px;background:var(--yellow);border-radius:48% 52% 35% 65%;opacity:.7}
    .hero:after{width:180px;height:180px;left:-60px;bottom:-75px;background:var(--mint);border-radius:55% 45% 58% 42%;opacity:.55}
    .hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
    .eyebrow{color:var(--orange);font-weight:800;letter-spacing:1px;font-size:13px;text-transform:uppercase}
    h1,h2,h3{line-height:1.2;margin:0 0 18px;letter-spacing:0}
    h1{font-size:clamp(38px,6vw,72px);max-width:680px}
    h2{font-size:clamp(28px,4vw,44px)}
    h3{font-size:20px}
    .hero-copy{font-size:18px;color:#526079;max-width:620px;margin:0 0 28px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap}
    .hero-panel{background:var(--navy);color:#fff;border-radius:24px;padding:28px;box-shadow:var(--shadow);position:relative}
    .hero-panel:after{content:"";position:absolute;width:90px;height:90px;background:var(--pink);right:-18px;bottom:-20px;border-radius:50%}
    .hero-panel h3{position:relative;z-index:1;color:#fff}
    .panel-list{display:grid;gap:14px;margin-top:22px;position:relative;z-index:1}
    .panel-item{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid rgba(255,255,255,.16);padding-bottom:12px;color:#dbe3f1}
    .panel-item strong{color:#fff;font-size:18px}
    .metrics{margin-top:-28px;position:relative;z-index:3}
    .metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
    .metric{background:#fff;padding:22px;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:14px}
    .metric strong{display:block;font-size:28px;color:var(--orange)}
    .metric span{color:var(--muted);font-size:14px}
    section{padding:88px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:34px}
    .section-head p{max-width:560px;color:var(--muted);margin:0}
    .kicker{color:var(--blue);font-size:13px;font-weight:800;letter-spacing:1px}
    .about-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:50px;align-items:start}
    .about-intro{font-size:20px;color:#45536d}
    .feature-list{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
    .feature{padding:22px;background:#fff;border-left:4px solid var(--mint);border-radius:4px 14px 14px 4px;box-shadow:0 10px 26px rgba(39,45,72,.06)}
    .feature:nth-child(2){border-color:var(--orange)}.feature:nth-child(3){border-color:var(--yellow)}.feature:nth-child(4){border-color:var(--pink)}
    .feature p,.service p,.case p,.review p{color:var(--muted);font-size:14px;margin:0}
    .services{background:#f4f7fb}
    .service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .service{background:#fff;padding:22px;border-top:4px solid var(--blue);min-height:205px;box-shadow:0 8px 25px rgba(39,45,72,.06);transition:.25s}
    .service:nth-child(4n+2){border-color:var(--orange)}.service:nth-child(4n+3){border-color:var(--mint)}.service:nth-child(4n+4){border-color:var(--pink)}
    .service:hover,.case:hover,.review:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
    .service-tag{display:inline-block;color:var(--blue);font-size:12px;font-weight:700;margin-bottom:10px}
    .process{background:#fff}
    .process-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
    .step{padding:22px 18px;border:1px solid var(--line);background:#fffaf5;position:relative}
    .step-num{font-size:34px;font-weight:800;color:var(--orange);display:block;margin-bottom:15px}
    .step p{color:var(--muted);font-size:14px;margin:0}
    .network-band{background:var(--navy);color:#fff}
    .network-band .section-head p{color:#c8d1e3}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:9px 14px;border:1px solid rgba(255,255,255,.25);border-radius:20px;color:#eef3ff;font-size:14px}
    .solutions{background:#fff0df}
    .solution-layout{display:grid;grid-template-columns:1fr 1fr;gap:20px}
    .solution-block{background:#fff;padding:28px;border-radius:16px;box-shadow:0 10px 28px rgba(112,77,47,.08)}
    .solution-block h3{color:var(--orange)}
    .solution-block ul{padding-left:20px;color:var(--muted);margin-bottom:0}
    .cases{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .case{background:#fff;border:1px solid var(--line);overflow:hidden;transition:.25s}
    .case-media{aspect-ratio:16/8;overflow:hidden;background:#f0e5d8}
    .case-media img{width:100%;height:100%;object-fit:cover}
    .case-body{padding:20px}
    .case-body h3{margin-bottom:8px}
    .compare-wrap{overflow-x:auto;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow)}
    table{border-collapse:collapse;width:100%;min-width:760px}
    th,td{padding:16px 18px;text-align:left;border-bottom:1px solid var(--line);font-size:14px}
    th{background:var(--navy);color:#fff;font-weight:700}
    td:first-child{font-weight:700;color:var(--ink)}
    .score{display:flex;align-items:center;gap:22px;background:#fff0df;padding:24px;margin-bottom:20px}
    .score strong{font-size:42px;color:var(--orange)}
    .stars{color:#e6a914;letter-spacing:3px;font-size:20px}
    .pricing{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:20px}
    .price-card{padding:24px;background:#f5f8ff;border:1px solid #dfe7fa}
    .price-card strong{font-size:27px;color:var(--blue)}
    .price-card p{color:var(--muted);margin-bottom:0}
    .reviews{background:#f4f7fb}
    .review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .review{background:#fff;padding:24px;border-left:4px solid var(--yellow);transition:.25s}
    .review:nth-child(2n){border-color:var(--mint)}
    .review-author{font-weight:800;margin-top:18px;font-size:14px}
    .review-role{font-size:12px;color:var(--muted)}
    .articles{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
    .article{background:#fff;border:1px solid var(--line);padding:17px;min-height:125px}
    .article span{font-size:12px;color:var(--orange)}
    .article h3{font-size:16px;margin-top:12px}
    .faq-list{display:grid;gap:10px;max-width:900px}
    .faq-item{background:#fff;border:1px solid var(--line)}
    .faq-question{width:100%;display:flex;align-items:center;justify-content:space-between;text-align:left;border:0;background:none;padding:18px 20px;color:var(--ink);font-size:16px;font-weight:700;cursor:pointer}
    .faq-question span{font-size:22px;color:var(--orange);transition:.25s}
    .faq-answer{display:none;padding:0 20px 18px;color:var(--muted);font-size:14px}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-question span{transform:rotate(45deg)}
    .contact{background:#fff0df}
    .contact-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:42px;align-items:start}
    .contact-note{font-size:18px;color:#526079}
    .contact-info{display:grid;gap:12px;margin-top:24px}
    .contact-info div{padding:14px 16px;background:#fff;border-left:3px solid var(--orange)}
    .contact-form{background:#fff;padding:28px;box-shadow:var(--shadow)}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    label{display:grid;gap:7px;font-size:13px;font-weight:700}
    input,select,textarea{width:100%;border:1px solid #d8dce5;border-radius:7px;padding:12px 13px;font:inherit;color:var(--ink);background:#fff}
    textarea{min-height:130px;resize:vertical}
    .full{grid-column:1/-1}
    .contact-form .button{margin-top:18px}
    .qr{width:130px;margin-top:12px;border:8px solid #fff}
    .footer{background:var(--navy);color:#dbe3f1;padding:48px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:35px}
    .footer h3{color:#fff;font-size:18px}
    .footer p,.footer a{font-size:14px;color:#b8c4d8}
    .footer a:hover{color:#fff}
    .link-list{display:flex;flex-wrap:wrap;gap:9px 16px}
    .copyright{border-top:1px solid rgba(255,255,255,.15);margin-top:32px;padding-top:18px;font-size:12px;color:#93a2bb}
    .float-help{position:fixed;right:20px;bottom:20px;z-index:15;background:var(--orange);color:#fff;padding:13px 16px;border-radius:30px;box-shadow:0 10px 24px rgba(255,116,71,.3);font-size:14px;font-weight:700}
    .reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease}
    .reveal.visible{opacity:1;transform:none}
    @media(max-width:1050px){
      .nav-links{display:none;position:absolute;left:20px;right:20px;top:70px;padding:12px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
      .nav-links.open{display:flex}.nav-links a{padding:12px 14px}
      .menu-toggle{display:block}.nav-cta{display:none}
      .service-grid{grid-template-columns:repeat(2,1fr)}.articles{grid-template-columns:repeat(3,1fr)}
    }
    @media(max-width:760px){
      .container{width:min(100% - 28px,1180px)}
      section{padding:62px 0}.hero{padding:62px 0 58px}.hero-grid,.about-layout,.solution-layout,.contact-layout{grid-template-columns:1fr;gap:30px}
      h1{font-size:42px}.hero-panel{margin-top:10px}.metric-grid{grid-template-columns:repeat(2,1fr)}
      .feature-list,.review-grid,.cases{grid-template-columns:1fr}.service-grid{grid-template-columns:1fr 1fr}.process-grid{grid-template-columns:1fr 1fr}
      .articles{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr}.section-head{display:block}.section-head p{margin-top:14px}
    }
    @media(max-width:480px){
      .brand{font-size:16px;min-width:0}.brand img{width:36px;height:36px}.hero-actions .button{width:100%}
      .service-grid,.process-grid,.articles,.form-grid{grid-template-columns:1fr}.metric{padding:17px}.metric strong{font-size:24px}
      .score{display:block}.score strong{display:block}.float-help{right:12px;bottom:12px}
    }