:root{
      --bg:#f4f8fb;
      --panel:#ffffff;
      --panel-2:#f7fbfd;
      --text:#173042;
      --muted:#5f7280;
      --line:#dbe7ee;
      --brand:#0ea5a8;
      --brand-2:#2563eb;
      --accent:#13b8a6;
      --shadow:0 18px 40px rgba(16, 40, 60, .08);
      --radius:18px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;background:
      radial-gradient(circle at top left, rgba(14,165,168,.12), transparent 28%),
      radial-gradient(circle at top right, rgba(37,99,235,.10), transparent 24%),
      linear-gradient(180deg,#f7fbfe 0%,#f4f8fb 40%,#f8fbfc 100%);
      color:var(--text);line-height:1.65}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--container),calc(100% - 32px));margin:0 auto}
    .topbar{position:sticky;top:0;z-index:50;background:rgba(247,251,254,.88);backdrop-filter:blur(12px);border-bottom:1px solid rgba(219,231,238,.9)}
    .nav{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0}
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .brand img{width:42px;height:42px;object-fit:contain}
    .brand h2{margin:0;font-size:17px;line-height:1.2}
    .brand small{display:block;color:var(--muted);font-size:12px}
    .nav-links{display:flex;align-items:center;gap:14px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:14px;color:#274656;padding:8px 10px;border-radius:999px;transition:.2s ease}
    .nav-links a:hover{background:#e8f4f6;color:#0d6470}
    .nav-cta{display:flex;align-items:center;gap:10px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:999px;padding:11px 16px;font-weight:700;transition:.22s ease;cursor:pointer;white-space:nowrap}
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:0 10px 24px rgba(14,165,168,.25)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(14,165,168,.28)}
    .btn-ghost{background:#fff;border-color:var(--line);color:var(--text)}
    .btn-ghost:hover{border-color:#b9d7e2;background:#f7fbfd}
    .menu-btn{display:none;background:#fff;border:1px solid var(--line);border-radius:12px;width:42px;height:42px}
    .menu-btn span{display:block;width:18px;height:2px;background:#24404f;margin:4px auto;border-radius:2px}
    main{overflow:hidden}
    .hero{padding:48px 0 26px}
    .hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:22px;align-items:stretch}
    .hero-card,.panel{background:rgba(255,255,255,.8);border:1px solid rgba(219,231,238,.9);border-radius:var(--radius);box-shadow:var(--shadow)}
    .hero-card{padding:34px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:7px 12px;border-radius:999px;background:#e6faf8;color:#0b6e73;font-weight:700;font-size:13px}
    h1{margin:16px 0 12px;font-size:clamp(30px,5vw,52px);line-height:1.08;letter-spacing:-.03em}
    .hero p{margin:0;color:var(--muted);font-size:16px;max-width:58ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
    .hero-meta{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:22px}
    .mini{padding:14px;border-radius:16px;background:linear-gradient(180deg,#fafdff,#eef8fb);border:1px solid #dbeef2}
    .mini strong{display:block;font-size:22px}
    .mini span{color:var(--muted);font-size:13px}
    .hero-side{display:grid;gap:12px}
    .side-box{padding:20px}
    .side-box h3{margin:0 0 10px;font-size:18px}
    .chips{display:flex;flex-wrap:wrap;gap:10px}
    .chip{padding:9px 12px;border-radius:999px;background:#f2f8fb;border:1px solid #d8e8ef;color:#24404f;font-size:13px}
    section{padding:22px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:14px}
    .section-head h2{margin:0;font-size:28px}
    .section-head p{margin:0;color:var(--muted);max-width:60ch}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    .card{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:20px;box-shadow:0 10px 24px rgba(16,40,60,.05);transition:transform .22s ease,box-shadow .22s ease}
    .card:hover{transform:translateY(-3px);box-shadow:0 18px 36px rgba(16,40,60,.09)}
    .card h3{margin:0 0 10px;font-size:18px}
    .card p,.card li{color:var(--muted)}
    .metrics .card strong{display:block;font-size:30px;margin-bottom:4px;color:#0c3f59}
    .tagcloud{display:flex;flex-wrap:wrap;gap:10px}
    .tagcloud span{padding:8px 12px;border-radius:999px;background:#eef8fb;border:1px solid #d6e9ef;color:#295062;font-size:13px}
    .workflow{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
    .step{position:relative}
    .step .num{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;font-weight:800;margin-bottom:10px}
    .step:after{content:"";position:absolute;top:18px;right:-7px;width:14px;height:2px;background:linear-gradient(90deg,#8bd7df,transparent)}
    .step:last-child:after{display:none}
    .table-wrap{overflow-x:auto;border-radius:18px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow)}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:15px 14px;border-bottom:1px solid #e5eef2;text-align:left;vertical-align:top}
    th{background:#f5fbfd;color:#173042;font-size:14px}
    td{color:#486170}
    .rating{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
    .stars{color:#f59e0b;font-size:20px;letter-spacing:2px}
    .accordion{display:grid;gap:12px}
    .faq-item{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden}
    .faq-q{width:100%;text-align:left;padding:16px 18px;background:#fff;border:0;font-size:16px;font-weight:700;color:#163243;display:flex;align-items:center;justify-content:space-between;gap:10px;cursor:pointer}
    .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;padding:0 18px}
    .faq-item.active .faq-a{max-height:180px;padding-bottom:16px}
    .reviews,.articles,.cases{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .review .role{color:#0d6671;font-weight:700;font-size:13px;margin-bottom:8px}
    .quote{font-size:15px;color:#335162}
    .article-list{display:grid;gap:12px}
    .article{display:flex;justify-content:space-between;gap:12px;padding:14px 0;border-bottom:1px dashed #dbe7ee}
    .article:last-child{border-bottom:0}
    .article span{color:var(--muted);font-size:13px}
    .contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:16px}
    .form{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    .form .full{grid-column:1/-1}
    label{display:block;font-size:13px;color:#315063;margin-bottom:6px;font-weight:700}
    input,select,textarea{width:100%;border:1px solid #d7e5ec;border-radius:14px;background:#fff;padding:12px 14px;font:inherit;color:var(--text);outline:none;transition:border-color .2s ease,box-shadow .2s ease}
    input:focus,select:focus,textarea:focus{border-color:#49b8c0;box-shadow:0 0 0 4px rgba(14,165,168,.12)}
    textarea{min-height:118px;resize:vertical}
    .form-actions{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
    .aside-box{display:grid;gap:14px}
    .qrcode{display:flex;gap:14px;align-items:center}
    .qrcode img{width:132px;height:132px;object-fit:cover;border-radius:16px;border:1px solid var(--line);background:#fff}
    footer{padding:24px 0 34px;border-top:1px solid #dde9ef;background:#f7fbfd;color:#24404f}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:16px;align-items:start}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px}
    .footer-links a{color:#20414f;padding:8px 11px;border-radius:999px;background:#eef8fb;border:1px solid #d8e8ef}
    .floating{position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px}
    .floating a,.floating button{width:48px;height:48px;border-radius:50%;display:grid;place-items:center;border:1px solid var(--line);background:#fff;box-shadow:0 14px 30px rgba(16,40,60,.12);cursor:pointer}
    .scrolltop{display:none}
    .reveal{opacity:0;transform:translateY(12px);transition:.55s ease}
    .reveal.show{opacity:1;transform:none}
    .mobile-only{display:none}
    @media (max-width: 980px){
      .hero-grid,.grid-4,.grid-3,.grid-2,.workflow,.reviews,.articles,.cases,.contact-grid,.footer-grid{grid-template-columns:1fr}
      .section-head{align-items:flex-start;flex-direction:column}
      .step:after{display:none}
      .nav-links{display:none}
      .menu-btn{display:inline-grid;place-items:center}
      .nav.open .nav-links{display:flex;position:absolute;left:16px;right:16px;top:70px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:12px;box-shadow:var(--shadow);flex-direction:column;align-items:flex-start}
      .nav{position:relative}
      .mobile-only{display:inline-flex}
      .hero{padding-top:28px}
      .form{grid-template-columns:1fr}
    }