:root{--bg:#f6f8fc;--panel:#ffffff;--panel2:#fdfefe;--text:#1f2937;--muted:#667085;--line:#dbe4f0;--brand:#1f7aff;--brand2:#27c2a0;--accent:#ffb64d;--shadow:0 18px 40px rgba(31,122,255,.10);--radius:20px}
    *{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,#f9fbff 0%,#f5f8fd 42%,#f7f9fc 100%);color:var(--text);line-height:1.65}
    a{color:var(--brand);text-decoration:none}img{display:block;max-width:100%}button,input,select,textarea{font:inherit}
    .container{width:min(1180px,calc(100% - 32px));margin:0 auto}
    header{position:sticky;top:0;z-index:30;background:rgba(246,248,252,.86);backdrop-filter:blur(12px);border-bottom:1px solid rgba(219,228,240,.8)}
    .nav{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:14px 0}
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .brand img{width:44px;height:44px;object-fit:contain;border-radius:12px;background:#fff;padding:4px;border:1px solid var(--line)}
    .brand strong{font-size:1.05rem}
    .brand span{display:block;font-size:.86rem;color:var(--muted)}
    .nav-links{display:flex;align-items:center;gap:16px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{color:var(--text);font-size:.95rem;padding:8px 10px;border-radius:999px}
    .nav-links a:hover,.nav-links a:focus{background:#eaf2ff;color:#0f4fbf}
    .nav-cta{display:flex;align-items:center;gap:10px}
    .btn,.btn-ghost{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:999px;padding:12px 18px;border:1px solid transparent;cursor:pointer;transition:.25s ease;white-space:nowrap}
    .btn{background:linear-gradient(135deg,var(--brand),#5c8dff);color:#fff;box-shadow:0 12px 24px rgba(31,122,255,.18)}
    .btn:hover{transform:translateY(-2px);box-shadow:0 16px 30px rgba(31,122,255,.22)}
    .btn-ghost{background:#fff;color:var(--text);border-color:var(--line)}
    .btn-ghost:hover{border-color:#b7c9e6;transform:translateY(-1px)}
    .menu-toggle{display:none;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 12px}
    .hero{padding:34px 0 14px}
    .hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:22px;align-items:stretch}
    .hero-card{position:relative;overflow:hidden;background:linear-gradient(135deg,#fefeff 0%,#eef5ff 48%,#f4fbff 100%);border:1px solid #dbe6f7;border-radius:28px;box-shadow:var(--shadow);padding:32px}
    .hero-card:before,.hero-card:after{content:"";position:absolute;border-radius:999px;background:radial-gradient(circle at 30% 30%,rgba(39,194,160,.22),rgba(39,194,160,0) 65%);width:220px;height:220px;right:-50px;top:-30px}
    .hero-card:after{width:180px;height:180px;left:-40px;bottom:-40px;top:auto;background:radial-gradient(circle at 30% 30%,rgba(31,122,255,.18),rgba(31,122,255,0) 68%)}
    .hero h1{margin:12px 0 12px;font-size:clamp(2rem,4vw,3.5rem);line-height:1.08;letter-spacing:-.02em}
    .sub{color:var(--muted);font-size:1.03rem;max-width:62ch}
    .pill-row{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0 22px}
    .pill{padding:9px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:.92rem;color:#29415e;box-shadow:0 8px 18px rgba(31,122,255,.05)}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:8px}
    .stat-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .stat{background:rgba(255,255,255,.78);border:1px solid rgba(219,228,240,.9);border-radius:22px;padding:18px 16px;box-shadow:0 10px 26px rgba(23,45,88,.05)}
    .stat strong{display:block;font-size:1.5rem;color:#0f3a85}
    .stat span{color:var(--muted);font-size:.92rem}
    .hero-side{display:grid;gap:14px}
    .side-card{background:var(--panel);border:1px solid var(--line);border-radius:24px;padding:18px;box-shadow:var(--shadow)}
    .side-card h3{margin:0 0 10px;font-size:1.05rem}
    .side-card ul{margin:0;padding-left:18px;color:var(--muted)}
    section{padding:22px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:14px;margin-bottom:16px}
    .section-head h2{margin:0;font-size:1.65rem}
    .section-head p{margin:0;color:var(--muted);max-width:60ch}
    .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
    .card{background:var(--panel);border:1px solid var(--line);border-radius:24px;padding:18px;box-shadow:0 10px 28px rgba(16,24,40,.05);transition:.25s ease}
    .card:hover{transform:translateY(-3px);box-shadow:0 18px 38px rgba(31,122,255,.10)}
    .card h3{margin:0 0 8px;font-size:1.08rem}
    .card p,.card li{color:var(--muted)}
    .icon{width:42px;height:42px;border-radius:14px;background:linear-gradient(135deg,#e9f2ff,#effaf8);display:grid;place-items:center;color:#0f5ccc;font-weight:700;margin-bottom:12px}
    .list{margin:0;padding-left:18px;display:grid;gap:8px}
    .compare-wrap{overflow-x:auto;border-radius:24px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow)}
    table{width:100%;border-collapse:collapse;min-width:860px}
    th,td{padding:14px 16px;border-bottom:1px solid #edf2f7;text-align:left;vertical-align:top}
    th{background:#f7fbff;color:#143b77;font-size:.96rem}
    td{color:var(--text)}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{background:#fff;border:1px solid var(--line);padding:10px 13px;border-radius:999px;color:#27415b}
    .timeline{display:grid;gap:14px}
    .step{display:grid;grid-template-columns:72px 1fr;gap:14px;align-items:start;background:#fff;border:1px solid var(--line);border-radius:22px;padding:16px}
    .step b{display:inline-grid;place-items:center;width:48px;height:48px;border-radius:16px;background:linear-gradient(135deg,#1f7aff,#27c2a0);color:#fff;font-size:1.1rem}
    .gallery{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
    .gallery .card img{border-radius:16px;border:1px solid var(--line)}
    .testimonials{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .quote{position:relative}
    .quote:before{content:"“";position:absolute;right:16px;top:4px;font-size:3rem;color:#d9e7ff}
    .faq{display:grid;gap:12px}
    details{background:#fff;border:1px solid var(--line);border-radius:18px;padding:0 16px;box-shadow:0 8px 22px rgba(16,24,40,.04)}
    summary{cursor:pointer;list-style:none;padding:16px 0;font-weight:600}
    summary::-webkit-details-marker{display:none}
    details p{margin:0 0 16px;color:var(--muted)}
    .form-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:16px;align-items:start}
    form{display:grid;gap:12px;background:#fff;border:1px solid var(--line);border-radius:24px;padding:18px;box-shadow:var(--shadow)}
    label{font-size:.94rem;font-weight:600;color:#344054}
    input,select,textarea{width:100%;padding:12px 14px;border:1px solid #d7e0ec;border-radius:14px;background:#fbfcfe;color:var(--text);outline:none;transition:.2s}
    input:focus,select:focus,textarea:focus{border-color:#7fb0ff;box-shadow:0 0 0 4px rgba(31,122,255,.10)}
    textarea{min-height:120px;resize:vertical}
    .contact-box{display:grid;gap:14px}
    .contact-row{display:grid;grid-template-columns:1fr 160px;gap:14px;align-items:start}
    .qrcode{background:#fff;border:1px solid var(--line);border-radius:22px;padding:14px;text-align:center;box-shadow:var(--shadow)}
    .qrcode img{width:100%;max-width:160px;margin:0 auto;border-radius:16px}
    .footer-links{display:flex;flex-wrap:wrap;gap:12px}
    footer{margin-top:18px;background:#eef4fb;border-top:1px solid #d7e2ef;color:#29415b}
    footer a{color:#164b9b}
    .footer-inner{padding:22px 0;display:grid;gap:14px}
    .footer-top{display:grid;grid-template-columns:1.2fr .8fr;gap:16px;align-items:start}
    .mini{color:var(--muted);font-size:.92rem}
    .float-actions{position:fixed;right:16px;bottom:16px;display:grid;gap:10px;z-index:40}
    .float-actions a,.to-top{width:52px;height:52px;border-radius:16px;display:grid;place-items:center;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);color:var(--text)}
    .floating-contact{position:fixed;left:16px;bottom:16px;z-index:40}
    .floating-contact .btn{padding:12px 16px}
    .reveal{opacity:0;transform:translateY(16px);transition:opacity .7s ease,transform .7s ease}
    .reveal.in{opacity:1;transform:none}
    .mobile-only{display:none}
    @media (max-width: 980px){
      .hero-grid,.grid-3,.grid-4,.testimonials,.gallery,.form-grid,.footer-top,.contact-row{grid-template-columns:1fr}
      .nav-links{display:none;position:absolute;left:16px;right:16px;top:68px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:12px;box-shadow:var(--shadow)}
      .nav-links.open{display:flex;flex-direction:column;align-items:flex-start}
      .menu-toggle{display:inline-flex}
      .mobile-only{display:inline-flex}
      .nav{position:relative}
      .stat-grid{grid-template-columns:1fr 1fr}
    }
    @media (max-width: 640px){
      .container{width:min(100% - 20px,1180px)}
      .hero-card{padding:22px}
      .hero h1{font-size:2rem}
      .stat-grid{grid-template-columns:1fr}
      .step{grid-template-columns:1fr}
      .floating-contact .btn{padding:12px 14px}
    }