:root{--ink:#12343b;--muted:#587178;--teal:#0b9f9a;--cyan:#35c7c0;--deep:#083c49;--mint:#e9faf6;--line:#d6ebe7;--white:#fff;--orange:#ef9f52;--shadow:0 16px 40px rgba(13,74,79,.11)}
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:#f5fbfa;color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","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:min(1160px,calc(100% - 40px));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:20;background:rgba(245,251,250,.94);border-bottom:1px solid rgba(214,235,231,.9);backdrop-filter:blur(16px)}
    .nav-wrap{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .brand{display:flex;align-items:center;gap:10px;min-width:160px;font-weight:800;color:var(--deep)}
    .brand img{width:42px;height:42px;object-fit:contain}
    .brand span{font-size:18px;letter-spacing:0}
    .nav-links{display:flex;align-items:center;gap:0;flex-wrap:nowrap}
    .nav-links a{font-size:13px;color:#345961;padding:10px 9px;white-space:nowrap;border-radius:8px}
    .nav-links a:hover{color:var(--teal);background:var(--mint)}
    .nav-cta,.btn{display:inline-flex;align-items:center;justify-content:center;border:0;cursor:pointer;font-weight:700;transition:.25s ease}
    .nav-cta{padding:11px 17px;border-radius:8px;background:var(--deep);color:#fff;font-size:13px;white-space:nowrap}
    .nav-cta:hover,.btn:hover{transform:translateY(-2px);box-shadow:0 9px 20px rgba(8,60,73,.2)}
    .menu-toggle{display:none;background:transparent;border:1px solid var(--line);color:var(--deep);font-size:22px;border-radius:7px;padding:4px 10px}
    .hero{position:relative;overflow:hidden;background:linear-gradient(130deg,#e8fbf7 0%,#f6fcfb 52%,#dff7f4 100%);padding:82px 0 68px}
    .hero:after{content:"";position:absolute;width:360px;height:360px;border:1px solid rgba(11,159,154,.18);border-radius:50%;right:-110px;top:30px;box-shadow:0 0 0 34px rgba(11,159,154,.05),0 0 0 68px rgba(11,159,154,.035)}
    .hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center;position:relative;z-index:1}
    .eyebrow,.kicker{color:var(--teal);font-size:13px;font-weight:800;letter-spacing:1.5px;text-transform:uppercase}
    h1,h2,h3{line-height:1.25;margin:0;color:var(--deep)}
    h1{font-size:clamp(38px,5vw,66px);max-width:650px;letter-spacing:0}
    h2{font-size:clamp(28px,3vw,40px)}
    h3{font-size:19px}
    .hero p{font-size:18px;color:var(--muted);max-width:640px;margin:22px 0 30px}
    .actions{display:flex;gap:12px;flex-wrap:wrap}
    .btn{padding:13px 20px;border-radius:8px;font-size:15px}
    .btn-primary{background:var(--teal);color:#fff}
    .btn-secondary{background:#fff;color:var(--deep);border:1px solid #b9dfd9}
    .hero-panel{border:1px solid rgba(11,159,154,.18);background:rgba(255,255,255,.72);border-radius:18px;padding:24px;box-shadow:var(--shadow)}
    .panel-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}
    .signal{display:inline-flex;align-items:center;gap:7px;color:#27746f;font-size:13px}
    .signal i{width:8px;height:8px;border-radius:50%;background:#2bc39d;box-shadow:0 0 0 5px rgba(43,195,157,.14)}
    .metric-list{display:grid;gap:12px}
    .metric{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;background:#f4fcfa;border:1px solid #dcefeb;border-radius:10px}
    .metric strong{font-size:24px;color:var(--teal)}
    .metric span{font-size:13px;color:var(--muted)}
    .section{padding:88px 0}
    .section-tint{background:linear-gradient(180deg,#effaf8 0%,#f8fcfb 100%)}
    .section-head{max-width:700px;margin-bottom:34px}
    .section-head p{color:var(--muted);margin:14px 0 0}
    .stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:-30px;position:relative;z-index:2}
    .stat{background:#fff;border:1px solid var(--line);padding:22px;border-radius:12px;box-shadow:0 8px 24px rgba(13,74,79,.07)}
    .stat strong{display:block;color:var(--teal);font-size:30px}
    .stat span{font-size:13px;color:var(--muted)}
    .about-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start}
    .about-copy p{color:var(--muted);font-size:16px}
    .check-list{display:grid;grid-template-columns:1fr 1fr;gap:12px;padding:0;margin:24px 0 0;list-style:none}
    .check-list li{padding:13px 14px;background:#fff;border-left:3px solid var(--cyan);border-radius:7px;color:#315860;font-size:14px}
    .check-list li:before{content:"✓";color:var(--teal);font-weight:800;margin-right:8px}
    .service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .service-card,.review,.case-card,.network-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:22px;transition:.25s ease}
    .service-card:hover,.review:hover,.case-card:hover,.network-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
    .service-card .num{color:var(--teal);font-weight:800;font-size:13px}
    .service-card p,.review p,.case-card p,.network-card p{color:var(--muted);font-size:14px;margin:10px 0 0}
    .tag-row{display:flex;gap:7px;flex-wrap:wrap;margin-top:15px}
    .tag{font-size:12px;padding:4px 9px;border-radius:99px;background:var(--mint);color:#28736e}
    .workflow{display:grid;grid-template-columns:repeat(5,1fr);gap:0;border-top:1px solid var(--line)}
    .step{padding:25px 18px 10px;position:relative}
    .step:not(:last-child):after{content:"→";position:absolute;right:-7px;top:30px;color:var(--cyan);font-size:22px}
    .step-no{width:34px;height:34px;border-radius:50%;background:var(--deep);color:#fff;display:grid;place-items:center;font-weight:800;margin-bottom:16px}
    .step p{color:var(--muted);font-size:14px}
    .solution-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
    .solution{padding:24px;background:#fff;border-radius:12px;border:1px solid var(--line)}
    .solution strong{color:var(--teal);font-size:15px}
    .solution p{margin:8px 0 0;color:var(--muted);font-size:14px}
    .network-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .network-card h3{font-size:18px}
    .model-cloud{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}
    .model-cloud span{padding:9px 13px;border:1px solid #b9dfd9;border-radius:7px;background:#fff;color:#2d666c;font-size:13px}
    .comparison{display:grid;grid-template-columns:280px 1fr;gap:28px;align-items:start}
    .rating{background:var(--deep);color:#fff;border-radius:14px;padding:27px;position:sticky;top:96px}
    .rating h3{color:#fff;margin-bottom:18px}
    .stars{color:#ffc76a;font-size:25px;letter-spacing:2px}
    .rating strong{font-size:45px;display:block;margin:4px 0}
    .rating small{color:#c9e7e2}
    .table-wrap{overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:12px}
    table{width:100%;border-collapse:collapse;min-width:680px}
    th,td{text-align:left;padding:16px;border-bottom:1px solid #e3f0ed;font-size:14px}
    th{background:#effaf8;color:var(--deep)}
    td:first-child{font-weight:700;color:#315860}
    .good{color:var(--teal);font-weight:700}
    .price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .price{background:#fff;border:1px solid var(--line);padding:24px;border-radius:12px}
    .price h3{font-size:18px}.price strong{font-size:30px;color:var(--teal);display:block;margin:10px 0}
    .price p{color:var(--muted);font-size:14px}
    .timeline{border-left:2px solid #a9dcd4;margin-left:13px}
    .timeline-item{position:relative;padding:0 0 22px 28px}
    .timeline-item:before{content:"";position:absolute;left:-9px;top:5px;width:15px;height:15px;border-radius:50%;background:var(--teal);border:4px solid #e7f8f4}
    .timeline-item strong{display:block;color:var(--deep)}
    .timeline-item span{color:var(--muted);font-size:14px}
    .review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .review-top{display:flex;align-items:center;justify-content:space-between}.review-top strong{font-size:14px}.review-top span{color:#e69b42;font-size:13px}
    .case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .case-card{padding:0;overflow:hidden}.case-card img{width:100%;aspect-ratio:16/8;object-fit:cover}.case-card div{padding:19px}
    .case-card h3{font-size:18px}
    .articles{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
    .article{background:#fff;border:1px solid var(--line);border-radius:9px;padding:17px;min-height:130px}
    .article small{color:var(--teal)}.article strong{display:block;margin-top:7px;font-size:14px;line-height:1.5}
    .faq{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    details{background:#fff;border:1px solid var(--line);border-radius:9px;padding:16px 18px}
    summary{cursor:pointer;font-weight:700;color:var(--deep);list-style:none}
    summary::-webkit-details-marker{display:none}
    summary:after{content:"+";float:right;color:var(--teal);font-size:20px;line-height:1}
    details[open] summary:after{content:"−"}
    details p{color:var(--muted);font-size:14px;margin:12px 0 0}
    .form-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:40px;align-items:start}
    .contact-info{background:var(--deep);color:#fff;border-radius:14px;padding:28px}
    .contact-info h2{color:#fff}.contact-info p{color:#cce5e1}
    .contact-info a{color:#8de2d4}
    .contact-list{list-style:none;padding:0;margin:22px 0 0}.contact-list li{padding:9px 0;border-bottom:1px solid rgba(255,255,255,.15);font-size:14px}
    form{background:#fff;border:1px solid var(--line);border-radius:14px;padding:26px;display:grid;grid-template-columns:1fr 1fr;gap:16px}
    label{font-size:13px;font-weight:700;color:#315860}label.full{grid-column:1/-1}
    input,select,textarea{display:block;width:100%;margin-top:7px;border:1px solid #c9e2de;border-radius:7px;padding:12px 13px;font:inherit;color:var(--ink);background:#fbfefd;outline:0}
    input:focus,select:focus,textarea:focus{border-color:var(--teal);box-shadow:0 0 0 3px rgba(11,159,154,.1)}
    textarea{min-height:120px;resize:vertical}
    form .btn{grid-column:1/-1}
    .footer{background:#083c49;color:#d5ece8;padding:42px 0 24px}
    .footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:30px}
    .footer h3{color:#fff;font-size:17px}.footer p,.footer a{font-size:13px;color:#b9d9d5}.footer a:hover{color:#fff}
    .footer-links{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}
    .copyright{border-top:1px solid rgba(255,255,255,.15);margin-top:30px;padding-top:18px;font-size:12px;color:#9fc7c1}
    .float-tools{position:fixed;right:20px;bottom:22px;z-index:15;display:grid;gap:9px}
    .float-tools a,.top-btn{width:46px;height:46px;border-radius:50%;display:grid;place-items:center;background:var(--teal);color:#fff;box-shadow:0 8px 20px rgba(11,159,154,.28);font-size:12px;border:0;cursor:pointer}
    .qr{position:fixed;right:76px;bottom:22px;background:#fff;padding:10px;border:1px solid var(--line);border-radius:10px;display:none;box-shadow:var(--shadow);z-index:16}.qr img{width:130px}.qr.show{display:block}
    .reveal{opacity:0;transform:translateY(18px);transition:opacity .65s ease,transform .65s ease}.reveal.visible{opacity:1;transform:none}
    @media(max-width:1050px){.nav-links a{padding:10px 5px;font-size:12px}.nav-cta{padding:10px 12px}.articles{grid-template-columns:repeat(3,1fr)}}
    @media(max-width:780px){.container{width:min(100% - 28px,600px)}.nav-wrap{min-height:66px}.menu-toggle{display:block}.nav-links{display:none;position:absolute;top:66px;left:14px;right:14px;background:#fff;border:1px solid var(--line);border-radius:10px;padding:8px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}.nav-links.open{display:flex}.nav-links a{padding:11px 12px}.nav-cta{display:none}.hero{padding:58px 0 50px}.hero-grid,.about-grid,.comparison,.form-layout{grid-template-columns:1fr;gap:28px}.hero p{font-size:16px}.stats{grid-template-columns:1fr 1fr;margin-top:-18px}.section{padding:62px 0}.service-grid,.network-grid,.review-grid,.case-grid,.price-grid{grid-template-columns:1fr 1fr}.workflow{grid-template-columns:1fr;border-top:0;border-left:2px solid var(--line);margin-left:14px}.step{padding:8px 10px 20px 28px}.step:not(:last-child):after{content:"↓";right:auto;left:-9px;top:auto;bottom:-7px}.solution-grid,.faq{grid-template-columns:1fr}.rating{position:static}.articles{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr 1fr}form{grid-template-columns:1fr}.float-tools{right:12px}}
    @media(max-width:480px){h1{font-size:38px}.service-grid,.network-grid,.review-grid,.case-grid,.price-grid,.stats,.articles,.footer-grid{grid-template-columns:1fr}.check-list{grid-template-columns:1fr}.actions .btn{width:100%}.qr{right:67px}}