:root{
      --bg:#f6f8ff;
      --bg2:#fffaf3;
      --card:#ffffff;
      --text:#162033;
      --muted:#5f6b84;
      --line:#dfe7f3;
      --brand:#3b82f6;
      --brand2:#8b5cf6;
      --brand3:#06b6d4;
      --accent:#ff8a4c;
      --shadow:0 20px 50px rgba(26, 47, 92, .10);
      --radius:22px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family: -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(59,130,246,.10), transparent 28%),
        radial-gradient(circle at top right, rgba(139,92,246,.10), transparent 24%),
        linear-gradient(180deg, var(--bg) 0%, #fbfcff 32%, #fff 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--container), calc(100% - 32px)); margin:0 auto}
    .site-header{
      position:sticky; top:0; z-index:50;
      backdrop-filter: blur(14px);
      background: rgba(246,248,255,.84);
      border-bottom:1px solid rgba(223,231,243,.75);
    }
    .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:44px; height:44px; object-fit:contain; border-radius:12px; background:#fff; border:1px solid var(--line)}
    .brand strong{display:block; font-size:18px; line-height:1.2}
    .brand span{display:block; font-size:12px; color:var(--muted); margin-top:3px}
    .nav-toggle{display:none; border:1px solid var(--line); background:#fff; border-radius:14px; padding:10px 12px; color:var(--text)}
    .nav-links{display:flex; align-items:center; gap:16px; flex-wrap:wrap; justify-content:flex-end}
    .nav-links a{font-size:14px; color:var(--text); padding:8px 10px; border-radius:999px}
    .nav-links a:hover,.nav-links a:focus{background:rgba(59,130,246,.10); color:#1f4fa5}
    .home-btn{display:inline-flex; align-items:center; gap:8px; padding:10px 16px; border-radius:999px; background:linear-gradient(135deg, var(--brand), var(--brand2)); color:#fff!important; box-shadow:0 12px 28px rgba(59,130,246,.22)}
    main{padding:18px 0 0}
    section{padding:34px 0}
    .hero{padding:26px 0 36px; position:relative; overflow:hidden}
    .hero::before,.hero::after{content:""; position:absolute; inset:auto; border-radius:999px; filter:blur(8px); opacity:.55}
    .hero::before{width:240px;height:240px;background:rgba(59,130,246,.12); top:-40px; right:-70px}
    .hero::after{width:180px;height:180px;background:rgba(255,138,76,.12); bottom:10px; left:-60px}
    .hero-grid{display:grid; grid-template-columns:1.18fr .82fr; gap:24px; align-items:stretch}
    .hero-copy,.hero-panel,.card,.feature,.review,.faq-item,.form-card,.metric,.article,.case,.compare,.block{
      background:var(--card); border:1px solid rgba(223,231,243,.95); border-radius:var(--radius); box-shadow:var(--shadow)
    }
    .hero-copy{padding:28px}
    .eyebrow{display:inline-flex; align-items:center; gap:8px; padding:8px 12px; border-radius:999px; background:linear-gradient(135deg, rgba(59,130,246,.12), rgba(139,92,246,.12)); color:#21407a; font-size:13px; font-weight:700}
    h1{margin:16px 0 14px; font-size:clamp(30px, 4vw, 54px); line-height:1.08; letter-spacing:-.02em}
    .lead{margin:0; color:var(--muted); font-size:16px; line-height:1.85; max-width:62ch}
    .hero-actions{display:flex; flex-wrap:wrap; gap:12px; margin-top:22px}
    .btn{display:inline-flex; align-items:center; justify-content:center; gap:8px; padding:13px 18px; border-radius:14px; border:1px solid transparent; font-weight:700; transition:.25s ease; cursor:pointer}
    .btn-primary{background:linear-gradient(135deg, var(--brand), var(--brand2)); color:#fff; box-shadow:0 14px 26px rgba(59,130,246,.20)}
    .btn-secondary{background:#fff; border-color:var(--line); color:var(--text)}
    .btn:hover{transform:translateY(-2px)}
    .hero-points{display:grid; grid-template-columns:repeat(2, minmax(0,1fr)); gap:12px; margin-top:22px}
    .point{padding:14px; border-radius:18px; background:linear-gradient(180deg, #fff, #f8fbff); border:1px solid #e8eef8}
    .point b{display:block; font-size:15px}
    .point span{display:block; margin-top:6px; color:var(--muted); font-size:13px; line-height:1.6}
    .hero-panel{padding:22px; display:grid; gap:14px; align-content:start}
    .mini-metrics{display:grid; grid-template-columns:repeat(2,1fr); gap:12px}
    .mini{padding:16px; border-radius:18px; background:linear-gradient(180deg, #fbfdff, #f3f7ff); border:1px solid #e5ecf7}
    .mini strong{display:block; font-size:24px}
    .mini span{color:var(--muted); font-size:13px}
    .panel-note{padding:16px; border-radius:18px; background:linear-gradient(135deg, rgba(6,182,212,.10), rgba(59,130,246,.08)); color:#17355d; line-height:1.75}
    .section-title{display:flex; justify-content:space-between; gap:18px; align-items:end; margin-bottom:18px}
    .section-title h2{margin:0; font-size:clamp(22px, 2.4vw, 34px)}
    .section-title p{margin:0; color:var(--muted); max-width:62ch; line-height:1.8}
    .metrics{display:grid; grid-template-columns:repeat(4,1fr); gap:16px}
    .metric{padding:20px}
    .metric strong{display:block; font-size:30px}
    .metric span{display:block; color:var(--muted); margin-top:6px; line-height:1.6}
    .tags{display:flex; flex-wrap:wrap; gap:10px}
    .tag{padding:9px 12px; border-radius:999px; background:#fff; border:1px solid #dce6f3; color:#2f466e; font-size:13px}
    .grid-3{display:grid; grid-template-columns:repeat(3,1fr); gap:16px}
    .card,.feature,.review,.article,.case,.compare,.block,.faq-item,.form-card{padding:20px}
    .feature h3,.card h3,.review h3,.case h3,.article h3{margin:10px 0 8px; font-size:18px}
    .feature p,.card p,.review p,.article p,.case p{margin:0; color:var(--muted); line-height:1.75}
    .icon{
      width:44px; height:44px; border-radius:14px; display:grid; place-items:center;
      background:linear-gradient(135deg, rgba(59,130,246,.15), rgba(139,92,246,.12));
      color:#21407a; font-weight:800
    }
    .split{display:grid; grid-template-columns:1fr 1fr; gap:18px}
    .steps{display:grid; gap:14px}
    .step{display:flex; gap:14px; align-items:flex-start; padding:16px; border-radius:18px; background:#fff; border:1px solid #e8eef8}
    .step-num{width:36px; height:36px; border-radius:50%; background:linear-gradient(135deg, var(--brand), var(--brand2)); color:#fff; display:grid; place-items:center; font-weight:800; flex:none}
    .step h3{margin:0 0 6px; font-size:16px}
    .step p{margin:0; color:var(--muted); line-height:1.7}
    table{width:100%; border-collapse:collapse; overflow:hidden}
    th,td{padding:14px 12px; text-align:left; border-bottom:1px solid #e8eef8; vertical-align:top}
    th{background:#f7faff; font-size:14px}
    .table-wrap{overflow:auto; border:1px solid #e1e9f4; border-radius:18px; background:#fff}
    .badge{display:inline-flex; align-items:center; padding:6px 10px; border-radius:999px; background:rgba(59,130,246,.12); color:#1f4fa5; font-size:12px; font-weight:700}
    .rating{display:flex; flex-wrap:wrap; align-items:center; gap:10px; margin-top:10px}
    .stars{color:#ffb23f; letter-spacing:2px; font-size:18px}
    .compare-grid{display:grid; grid-template-columns:1.05fr .95fr; gap:16px}
    .review-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:16px}
    .quote{font-size:15px; line-height:1.8; color:var(--text)}
    .author{margin-top:14px; color:var(--muted); font-size:13px}
    .faq-list{display:grid; gap:12px}
    .faq-item{padding:0; overflow:hidden}
    .faq-q{width:100%; text-align:left; border:0; background:#fff; padding:18px 20px; display:flex; justify-content:space-between; gap:14px; cursor:pointer; font-size:16px; color:var(--text); font-weight:700}
    .faq-a{max-height:0; overflow:hidden; transition:max-height .28s ease; padding:0 20px}
    .faq-item.active .faq-a{max-height:220px; padding-bottom:18px}
    .faq-a p{margin:0; color:var(--muted); line-height:1.8}
    .form-grid{display:grid; grid-template-columns:1fr 1fr; gap:14px}
    label{display:block; font-size:13px; color:#324461; margin:0 0 8px; font-weight:700}
    input,select,textarea{
      width:100%; border:1px solid #dbe4f0; border-radius:14px; padding:12px 14px; font:inherit; color:var(--text); background:#fff;
      outline:none; transition:border-color .2s, box-shadow .2s
    }
    input:focus,select:focus,textarea:focus{border-color:#7aa8ff; box-shadow:0 0 0 4px rgba(59,130,246,.10)}
    textarea{min-height:120px; resize:vertical}
    .form-actions{display:flex; gap:12px; flex-wrap:wrap; margin-top:16px}
    .footer{
      margin-top:12px; padding:26px 0 34px; background:#f3f7ff; border-top:1px solid #dfe7f3; color:#23314d
    }
    .footer-grid{display:grid; grid-template-columns:1.1fr .9fr .9fr; gap:18px}
    .footer a{color:#173f86}
    .muted{color:var(--muted)}
    .article-list{display:grid; grid-template-columns:repeat(3,1fr); gap:16px}
    .article .meta,.case .meta{display:flex; gap:10px; flex-wrap:wrap; margin-top:12px}
    .floating{
      position:fixed; right:16px; bottom:16px; z-index:60; display:grid; gap:10px
    }
    .float-btn{
      width:52px; height:52px; border-radius:18px; display:grid; place-items:center; background:linear-gradient(135deg, var(--brand), var(--brand2)); color:#fff; box-shadow:0 16px 34px rgba(59,130,246,.22)
    }
    .float-kefu{position:fixed; left:16px; bottom:16px; z-index:60; width:64px; height:64px; border-radius:20px; background:#fff; border:1px solid var(--line); display:grid; place-items:center; box-shadow:var(--shadow); overflow:hidden}
    .float-kefu img{width:100%; height:100%; object-fit:cover}
    .timeline{display:grid; gap:12px}
    .timeline-item{display:grid; grid-template-columns:120px 1fr; gap:16px; padding:14px 16px; background:#fff; border:1px solid #e8eef8; border-radius:18px}
    .timeline-item b{color:#1f4fa5}
    .service-net{display:flex; flex-wrap:wrap; gap:10px}
    .service-net .tag{background:linear-gradient(180deg,#fff, #f6f9ff)}
    .scroll-reveal{opacity:0; transform:translateY(18px); transition:.6s ease}
    .scroll-reveal.in{opacity:1; transform:none}
    @media (max-width: 980px){
      .hero-grid,.compare-grid,.split,.footer-grid,.grid-3,.metrics,.review-grid,.article-list{grid-template-columns:1fr}
      .section-title{flex-direction:column; align-items:flex-start}
      .timeline-item{grid-template-columns:1fr}
    }
    @media (max-width: 760px){
      .nav-toggle{display:inline-flex}
      .nav-links{display:none; width:100%; padding:12px 0 4px; justify-content:flex-start}
      .nav-links.open{display:flex}
      .nav{flex-wrap:wrap}
      .hero-copy,.hero-panel,.card,.feature,.review,.article,.case,.compare,.block,.faq-item,.form-card{padding:18px}
      .hero-points,.mini-metrics,.form-grid{grid-template-columns:1fr}
      .hero-actions{flex-direction:column}
      .btn{width:100%}
      .floating{right:12px; bottom:12px}
      .float-kefu{left:12px; bottom:12px}
    }