:root{--bg:#f6fbfb;--card:#ffffff;--card2:#eef8f7;--text:#17323a;--muted:#5e7680;--line:#d6e7e5;--brand:#0ea5a8;--brand2:#2f7ef7;--accent:#10b981;--shadow:0 18px 40px rgba(22,68,78,.08);--radius:18px;--max: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:linear-gradient(180deg,#f3fbfb 0%,#f7fbff 45%,#f8faf9 100%);color:var(--text)}
    a{color:var(--brand2);text-decoration:none} img{display:block;max-width:100%}
    .container{width:min(var(--max),calc(100% - 32px));margin:0 auto}
    header{position:sticky;top:0;z-index:60;background:rgba(246,251,251,.88);backdrop-filter:blur(14px);border-bottom:1px solid rgba(214,231,229,.75)}
    .topbar{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 strong{display:block;font-size:16px;line-height:1.2}
    .brand span{display:block;font-size:12px;color:var(--muted)}
    nav{display:flex;align-items:center;gap:16px;flex-wrap:wrap;justify-content:flex-end}
    nav a{font-size:14px;color:var(--text);padding:8px 10px;border-radius:999px;transition:.2s}
    nav a:hover,nav a:focus{background:#e8f7f6;color:#0d5f66}
    .nav-cta{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff !important;box-shadow:0 10px 20px rgba(47,126,247,.18)}
    .menu-btn{display:none;border:1px solid var(--line);background:#fff;border-radius:12px;padding:10px 12px;color:var(--text)}
    main{overflow:hidden}
    section{padding:72px 0}
    .hero{padding:34px 0 42px;background:
      radial-gradient(circle at 12% 18%,rgba(14,165,168,.14),transparent 24%),
      radial-gradient(circle at 82% 12%,rgba(47,126,247,.14),transparent 24%),
      linear-gradient(180deg,rgba(255,255,255,.5),rgba(255,255,255,0))}
    .hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:24px;align-items:stretch}
    .hero-card{background:linear-gradient(180deg,rgba(255,255,255,.96),rgba(246,252,252,.95));border:1px solid rgba(214,231,229,.85);border-radius:28px;padding:34px;box-shadow:var(--shadow);position:relative;overflow:hidden}
    .hero-card::after{content:"";position:absolute;inset:auto -12% -28% auto;width:260px;height:260px;border-radius:50%;background:radial-gradient(circle,rgba(14,165,168,.15),transparent 64%)}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:7px 12px;border-radius:999px;background:#e8f7f6;color:#0f6b73;font-size:13px;font-weight:700}
    h1{font-size:clamp(30px,5vw,52px);line-height:1.08;margin:16px 0 14px}
    .lead{font-size:17px;line-height:1.8;color:var(--muted);max-width:56ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:14px;padding:13px 18px;font-weight:700;transition:.2s;cursor:pointer}
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:0 16px 24px rgba(47,126,247,.18)}
    .btn-secondary{background:#fff;border-color:var(--line);color:var(--text)}
    .btn:hover{transform:translateY(-2px)}
    .hero-points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:24px}
    .point{background:rgba(255,255,255,.8);border:1px solid var(--line);border-radius:18px;padding:16px}
    .point b{display:block;font-size:20px;margin-bottom:6px}
    .point span{font-size:13px;color:var(--muted);line-height:1.6}
    .hero-side{display:grid;gap:16px}
    .panel{background:linear-gradient(180deg,#fff,#f4fbfb);border:1px solid var(--line);border-radius:22px;padding:20px;box-shadow:var(--shadow)}
    .panel h3{margin:0 0 12px;font-size:18px}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:8px 12px;background:#edf9f8;border:1px solid #d7ecea;border-radius:999px;font-size:13px;color:#0f5f66}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .section-title{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:22px}
    .section-title h2{margin:0;font-size:28px}
    .section-title p{margin:0;color:var(--muted)}
    .card{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:22px;box-shadow:0 10px 24px rgba(22,68,78,.05);transition:.2s}
    .card:hover{transform:translateY(-4px);box-shadow:0 20px 35px rgba(22,68,78,.09)}
    .metric strong{display:block;font-size:30px;margin-bottom:6px;color:#0d5f66}
    .metric span{color:var(--muted)}
    .svc-grid,.case-grid,.review-grid,.info-grid,.network-grid,.links-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .svc h3,.case h3,.review h3{margin:0 0 10px;font-size:18px}
    .svc ul,.case ul,.review p,.faq p{margin:0;color:var(--muted);line-height:1.8}
    .timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .step{position:relative}
    .step .num{width:42px;height:42px;border-radius:14px;background:linear-gradient(135deg,#e8f7f6,#dff0ff);display:grid;place-items:center;font-weight:800;color:#125b64;margin-bottom:12px}
    .table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:22px;background:#fff;box-shadow:var(--shadow)}
    table{width:100%;border-collapse:collapse;min-width:860px}
    th,td{padding:16px 14px;border-bottom:1px solid #e7f0ef;text-align:left;font-size:14px;vertical-align:top}
    th{background:#f2fbfb;color:#18464d}
    tr:last-child td{border-bottom:none}
    .rating{display:flex;gap:10px;align-items:center;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:18px;overflow:hidden}
    .faq-q{width:100%;border:0;background:transparent;padding:18px 18px;display:flex;justify-content:space-between;gap:12px;align-items:center;font-size:16px;font-weight:700;color:var(--text);cursor:pointer;text-align:left}
    .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;padding:0 18px}
    .faq-item.active .faq-a{max-height:170px;padding-bottom:18px}
    .faq-item.active .faq-q span{transform:rotate(45deg)}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .form-grid .full{grid-column:1/-1}
    input,select,textarea{width:100%;padding:13px 14px;border-radius:14px;border:1px solid var(--line);background:#fff;color:var(--text);font:inherit;outline:none}
    textarea{min-height:132px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:#7fd1d0;box-shadow:0 0 0 4px rgba(14,165,168,.12)}
    .footer{padding:30px 0 22px;background:#eef8f7;border-top:1px solid #d6e7e5;color:var(--text)}
    .footer a{color:#165e73}
    .footer-top{display:grid;grid-template-columns:1.1fr .9fr;gap:18px;align-items:start}
    .mini-links{display:flex;flex-wrap:wrap;gap:10px}
    .mini-links a{padding:8px 11px;border-radius:999px;background:#fff;border:1px solid var(--line)}
    .bottom{margin-top:18px;padding-top:16px;border-top:1px solid #d8e7e5;color:#4d666c;font-size:13px}
    .floating{position:fixed;right:16px;bottom:16px;display:grid;gap:10px;z-index:70}
    .float-btn{display:grid;place-items:center;width:48px;height:48px;border-radius:16px;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:0 16px 26px rgba(47,126,247,.22)}
    .float-box{position:fixed;left:16px;bottom:16px;z-index:70;max-width:300px;background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);overflow:hidden}
    .float-box .head{padding:12px 14px;background:#f2fbfb;font-weight:700}
    .float-box .body{padding:14px}
    .scroll-reveal{opacity:0;transform:translateY(16px);transition:.55s ease}
    .scroll-reveal.show{opacity:1;transform:none}
    .article-list{display:grid;gap:12px}
    .article-item{display:flex;justify-content:space-between;gap:12px;padding:14px 16px;border:1px solid var(--line);border-radius:16px;background:#fff}
    .article-item b{display:block;margin-bottom:4px}
    .article-item span{font-size:13px;color:var(--muted)}
    .compare-box{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .quote{padding:18px;border-left:4px solid var(--brand);background:#f5fbfb;border-radius:16px}
    @media (max-width: 960px){
      nav{display:none}.menu-btn{display:inline-flex}.hero-grid,.grid-4,.svc-grid,.case-grid,.review-grid,.info-grid,.network-grid,.links-grid,.timeline,.footer-top,.compare-box{grid-template-columns:1fr}.hero-points{grid-template-columns:1fr}.section-title{align-items:flex-start;flex-direction:column}.form-grid{grid-template-columns:1fr}
      .mobile-nav{display:none;flex-direction:column;gap:8px;padding:0 0 14px}.mobile-nav.show{display:flex}
      header.open nav{display:flex;flex-direction:column;align-items:flex-start;padding:0 0 14px}
    }