:root{
      --bg:#f7f8fc;
      --panel:#ffffff;
      --panel-2:#f3f7ff;
      --text:#172033;
      --muted:#5f6b86;
      --line:#d9e1f2;
      --brand:#4f7cff;
      --brand2:#7b5cff;
      --accent:#20b8a5;
      --warning:#ffb347;
      --shadow:0 16px 40px rgba(23,32,51,.08);
      --radius:20px;
      --radius-sm:14px;
      --max:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(79,124,255,.12), transparent 34%),
        radial-gradient(circle at top right, rgba(123,92,255,.10), transparent 28%),
        linear-gradient(180deg, #fbfcff 0%, #f6f8fd 32%, #f7f8fc 100%);
    }
    a{color:inherit;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:40;
      backdrop-filter: blur(14px);
      background:rgba(251,252,255,.82);
      border-bottom:1px solid rgba(217,225,242,.8);
    }
    .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;border-radius:10px;background:#fff;border:1px solid var(--line);padding:4px}
    .brand strong{display:block;font-size:18px;line-height:1.1}
    .brand span{display:block;font-size:12px;color:var(--muted);margin-top:3px}
    .nav-links{display:flex;align-items:center;gap:14px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:14px;color:var(--muted);padding:8px 10px;border-radius:999px;transition:.2s}
    .nav-links a:hover,.nav-links a.active{background:#edf2ff;color:#2140a6}
    .nav-cta{display:flex;align-items:center;gap:10px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      border:0;border-radius:999px;cursor:pointer;
      padding:12px 18px;font-weight:700;font-size:14px;
      transition:transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease;
      white-space:nowrap;
    }
    .btn:hover{transform:translateY(-2px);box-shadow:0 14px 28px rgba(79,124,255,.18)}
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff}
    .btn-secondary{background:#edf2ff;color:#2140a6}
    .menu-toggle{display:none;background:#edf2ff;color:#2140a6;padding:10px 14px}
    main{padding:18px 0 28px}
    section{padding:26px 0}
    .hero{
      padding-top:14px;
    }
    .hero-grid{
      display:grid;grid-template-columns:1.15fr .85fr;gap:22px;align-items:stretch;
    }
    .hero-copy{
      background:
        linear-gradient(135deg, rgba(79,124,255,.10), rgba(123,92,255,.08)),
        linear-gradient(180deg,#fff, #f8fbff);
      border:1px solid rgba(217,225,242,.92);
      border-radius:28px;
      padding:28px;
      box-shadow:var(--shadow);
      position:relative;
      overflow:hidden;
    }
    .hero-copy:before,.hero-copy:after{
      content:"";position:absolute;border-radius:999px;filter:blur(0);
      background:linear-gradient(135deg, rgba(79,124,255,.18), rgba(32,184,165,.15));
    }
    .hero-copy:before{width:180px;height:180px;right:-60px;top:-60px}
    .hero-copy:after{width:120px;height:120px;left:-40px;bottom:-30px}
    .kicker{
      display:inline-flex;align-items:center;gap:8px;
      font-size:13px;font-weight:700;color:#2140a6;
      background:#edf2ff;border:1px solid #d8e4ff;
      padding:8px 12px;border-radius:999px;
      position:relative;z-index:1;
    }
    h1{
      margin:16px 0 12px;font-size:clamp(30px,5vw,54px);line-height:1.08;letter-spacing:-.02em;
      position:relative;z-index:1;
    }
    .hero-copy p{
      margin:0;color:var(--muted);font-size:16px;line-height:1.8;max-width:60ch;position:relative;z-index:1;
    }
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px;position:relative;z-index:1}
    .hero-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:22px;position:relative;z-index:1}
    .mini{
      background:rgba(255,255,255,.86);border:1px solid rgba(217,225,242,.95);border-radius:18px;padding:14px;
    }
    .mini strong{display:block;font-size:18px;margin-bottom:5px}
    .mini span{display:block;color:var(--muted);font-size:13px;line-height:1.6}
    .hero-side{
      display:grid;gap:14px;
    }
    .side-card,.card{
      background:rgba(255,255,255,.92);border:1px solid rgba(217,225,242,.95);
      border-radius:22px;box-shadow:var(--shadow);
    }
    .side-card{padding:20px}
    .side-card h2,.section-head h2{margin:0 0 10px;font-size:26px}
    .side-card p,.section-head p{margin:0;color:var(--muted);line-height:1.8}
    .side-list{display:grid;gap:10px;margin-top:16px}
    .side-list div{
      display:flex;align-items:flex-start;gap:10px;padding:11px 12px;border-radius:14px;background:#f6f9ff;border:1px solid #e4ebff;
      color:var(--text)
    }
    .dot{width:10px;height:10px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--accent));margin-top:6px;flex:none}
    .hero-panel{
      padding:18px;background:linear-gradient(135deg,#ffffff,#f3f7ff);
      border-radius:22px;border:1px solid rgba(217,225,242,.95);box-shadow:var(--shadow);
    }
    .hero-panel .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
    .stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .stat{
      background:linear-gradient(180deg,#fff,#f7faff);
      border:1px solid var(--line);border-radius:18px;padding:18px;
      transition:transform .2s ease, box-shadow .2s ease;
    }
    .stat:hover,.card:hover,.review:hover,.case:hover{transform:translateY(-3px);box-shadow:0 18px 34px rgba(23,32,51,.10)}
    .stat b{display:block;font-size:24px;margin-bottom:6px;color:#1d2a48}
    .stat span{font-size:13px;color:var(--muted);line-height:1.6}
    .section-head{
      display:flex;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:16px;
    }
    .section-head .tag{display:inline-flex;padding:7px 12px;border-radius:999px;background:#eef7ff;color:#1e5fbf;font-size:12px;font-weight:700}
    .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
    .grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .card{padding:20px}
    .card h3{margin:0 0 10px;font-size:18px}
    .card p{margin:0;color:var(--muted);line-height:1.8}
    .chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
    .chip{padding:8px 12px;border-radius:999px;background:#f4f7ff;border:1px solid #dde6fb;color:#24418b;font-size:13px}
    .steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .step{
      position:relative;padding:20px;border-radius:22px;background:linear-gradient(180deg,#fff,#f7faff);
      border:1px solid var(--line);box-shadow:var(--shadow)
    }
    .step .no{
      display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:12px;
      background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;font-weight:800;margin-bottom:14px
    }
    .step h3{margin:0 0 8px}
    .step p{margin:0;color:var(--muted);line-height:1.75}
    .table-wrap{overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow)}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:16px 18px;border-bottom:1px solid #e8eef9;text-align:left;vertical-align:top}
    th{background:#f6f8ff;color:#23335a;font-size:14px}
    td{color:var(--text);line-height:1.7}
    tr:last-child td{border-bottom:0}
    .badge{
      display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border-radius:999px;
      background:#eaf7ef;color:#17724c;font-size:12px;font-weight:700
    }
    .highlight{
      background:linear-gradient(135deg, rgba(79,124,255,.08), rgba(32,184,165,.08));
      border:1px solid rgba(217,225,242,.95);
      border-radius:26px;padding:22px;box-shadow:var(--shadow)
    }
    .two-col{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .timeline{display:grid;gap:12px}
    .timeline-item{
      display:grid;grid-template-columns:60px 1fr;gap:14px;align-items:start;padding:14px;border-radius:18px;background:#fff;border:1px solid var(--line)
    }
    .timeline-item b{display:block;font-size:15px;margin-bottom:6px}
    .timeline-item span{color:var(--muted);line-height:1.7;font-size:14px}
    .network{
      display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px
    }
    .network div{
      padding:14px;border:1px solid var(--line);border-radius:16px;background:#fff;color:var(--text)
    }
    .compare{
      display:grid;grid-template-columns:1fr .9fr;gap:14px;align-items:stretch
    }
    .scorebox{
      padding:22px;border-radius:22px;background:linear-gradient(135deg,#ffffff,#f3f7ff);border:1px solid var(--line);box-shadow:var(--shadow)
    }
    .scorebox .big{font-size:44px;font-weight:900;color:#2140a6;line-height:1}
    .scorebox p{margin:8px 0 0;color:var(--muted);line-height:1.8}
    .form{
      display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px
    }
    .field{display:flex;flex-direction:column;gap:8px}
    .field.full{grid-column:1/-1}
    label{font-size:14px;font-weight:700;color:#25324d}
    input,select,textarea{
      width:100%;border:1px solid #d6def0;border-radius:14px;background:#fff;color:var(--text);
      padding:13px 14px;font:inherit;outline:none;transition:border .2s, box-shadow .2s
    }
    input:focus,select:focus,textarea:focus{border-color:#82a3ff;box-shadow:0 0 0 4px rgba(79,124,255,.12)}
    textarea{min-height:130px;resize:vertical}
    .submit-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
    .small-note{color:var(--muted);font-size:13px;line-height:1.7}
    .reviews,.cases,.articles,.faq,.linkcloud{display:grid;gap:14px}
    .reviews{grid-template-columns:repeat(3,minmax(0,1fr))}
    .review{padding:20px;border-radius:22px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow)}
    .review .meta{display:flex;justify-content:space-between;gap:10px;margin-bottom:12px;color:#2b3a5d}
    .review p{margin:0;color:var(--muted);line-height:1.8}
    .case{padding:18px;border-radius:20px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow)}
    .case .media{
      display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:14px
    }
    .case .media img,.gallery img,.qr img{
      width:100%;border-radius:16px;border:1px solid var(--line);background:#f8fbff
    }
    .articles a,.linkcloud a{
      display:flex;align-items:center;justify-content:space-between;gap:12px;
      padding:14px 16px;border-radius:16px;background:#fff;border:1px solid var(--line);
      color:var(--text);box-shadow:var(--shadow)
    }
    .articles a span,.linkcloud a span{color:var(--muted);font-size:13px}
    .faq details{
      background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);overflow:hidden
    }
    .faq summary{
      list-style:none;cursor:pointer;padding:16px 18px;font-weight:700;color:#23335a;display:flex;justify-content:space-between;gap:10px
    }
    .faq summary::-webkit-details-marker{display:none}
    .faq .ans{padding:0 18px 16px;color:var(--muted);line-height:1.8}
    .footer-top{
      display:grid;grid-template-columns:1.2fr .8fr;gap:14px;align-items:start;
      padding:18px 0 28px
    }
    footer{
      margin-top:10px;
      background:#edf2fb;border-top:1px solid #d9e1f2;color:#24324d
    }
    footer a{color:#2140a6}
    .footer-bottom{padding:16px 0 24px;border-top:1px solid #d9e1f2;color:#587}
    .qr{display:grid;grid-template-columns:150px 1fr;gap:14px;align-items:start}
    .float-tools{
      position:fixed;right:16px;bottom:16px;z-index:50;display:grid;gap:10px
    }
    .float-tools a,.float-tools button{
      width:48px;height:48px;border-radius:16px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow);
      display:grid;place-items:center;color:#2140a6;cursor:pointer
    }
    .mobile-menu{display:none}
    .back-top{opacity:0;pointer-events:none;transform:translateY(10px);transition:.2s}
    .back-top.show{opacity:1;pointer-events:auto;transform:translateY(0)}
    .reveal{opacity:0;transform:translateY(14px);transition:.55s ease}
    .reveal.in{opacity:1;transform:translateY(0)}
    .pill-row{display:flex;flex-wrap:wrap;gap:10px}
    .pill{padding:8px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#30456f;font-size:13px}
    .gallery{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
    .gallery figure{margin:0}
    .gallery figcaption{margin-top:8px;color:var(--muted);font-size:13px;line-height:1.6}
    @media (max-width: 1024px){
      .hero-grid,.compare,.footer-top,.two-col,.grid-3,.grid-2,.steps,.reviews,.stat-grid,.network,.gallery,.qr{grid-template-columns:1fr}
      .hero-points{grid-template-columns:1fr}
      .nav-links{display:none}
      .menu-toggle{display:inline-flex}
      .mobile-menu{display:none;padding:0 0 14px}
      .mobile-menu.open{display:block}
      .mobile-menu a{display:block;padding:10px 0;color:#3a4a6a;border-bottom:1px solid rgba(217,225,242,.75)}
    }
    @media (max-width: 640px){
      .container{width:min(var(--max), calc(100% - 24px))}
      .hero-copy{padding:22px;border-radius:24px}
      .side-card,.card,.scorebox,.review,.case{border-radius:18px}
      .form{grid-template-columns:1fr}
      .hero-actions,.submit-row{flex-direction:column;align-items:stretch}
      .btn{width:100%}
      .section-head{align-items:flex-start;flex-direction:column}
      .nav{padding:12px 0}
      .brand span{display:none}
      .stat-grid{grid-template-columns:1fr 1fr}
      .reviews .review:last-child{grid-column:auto}
    }