:root{
      --bg:#f5f8ff;
      --bg2:#eef4ff;
      --panel:#ffffff;
      --line:#d9e3ff;
      --text:#13213c;
      --muted:#5d6b89;
      --primary:#1154d8;
      --primary2:#2c7dff;
      --accent:#00a7ff;
      --warm:#eaf2ff;
      --shadow:0 18px 40px rgba(17,84,216,.10);
      --radius:20px;
      --radius-sm:14px;
      --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",Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(17,84,216,.12), transparent 28%),
        radial-gradient(circle at top right, rgba(0,167,255,.10), transparent 24%),
        linear-gradient(180deg, #f8fbff 0%, #eef5ff 42%, #f6f9ff 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:saturate(1.2) blur(10px);
      background:rgba(248,251,255,.84);
      border-bottom:1px solid rgba(17,84,216,.10);
    }
    .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:12px;background:#fff;padding:4px;border:1px solid var(--line)}
    .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:18px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:14px;color:var(--text);opacity:.9}
    .nav-links a:hover{color:var(--primary)}
    .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:12px 18px;font-weight:700;font-size:14px;transition:.25s ease;
      cursor:pointer;white-space:nowrap;
    }
    .btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;box-shadow:0 14px 30px rgba(17,84,216,.22)}
    .btn-ghost{background:#fff;color:var(--primary);border-color:rgba(17,84,216,.18)}
    .btn:hover{transform:translateY(-1px);box-shadow:0 14px 26px rgba(17,84,216,.14)}
    .menu-btn{display:none;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 12px;color:var(--text)}
    .hero{
      padding:34px 0 18px;
    }
    .hero-grid{
      display:grid;grid-template-columns:1.18fr .82fr;gap:22px;align-items:stretch;
    }
    .hero-main,.panel{
      background:linear-gradient(180deg, rgba(255,255,255,.98), rgba(245,249,255,.96));
      border:1px solid rgba(17,84,216,.12);
      border-radius:28px;
      box-shadow:var(--shadow);
    }
    .hero-main{padding:34px}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      background:rgba(17,84,216,.08);color:var(--primary);
      border:1px solid rgba(17,84,216,.14);
      padding:8px 14px;border-radius:999px;font-size:13px;font-weight:700;
    }
    h1{font-size:clamp(30px, 4vw, 54px);line-height:1.08;margin:16px 0 14px;letter-spacing:-.02em}
    .lead{font-size:16px;line-height:1.85;color:var(--muted);margin:0 0 22px;max-width:62ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:22px}
    .hero-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:12px}
    .point{
      background:linear-gradient(180deg,#fff, #f5f9ff);
      border:1px solid var(--line);border-radius:18px;padding:16px;
    }
    .point b{display:block;font-size:18px;color:var(--primary)}
    .point span{display:block;margin-top:6px;font-size:13px;color:var(--muted);line-height:1.6}
    .hero-side{display:grid;gap:14px}
    .mini-card{
      padding:20px;border-radius:24px;background:rgba(255,255,255,.96);border:1px solid rgba(17,84,216,.12)
    }
    .mini-card h3,.section-title h2{margin:0 0 10px;font-size:24px}
    .mini-card p{margin:0;color:var(--muted);line-height:1.7}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
    .tag{padding:8px 12px;border-radius:999px;background:var(--warm);border:1px solid var(--line);font-size:13px;color:#27406f}
    .section{padding:18px 0}
    .section-title{display:flex;justify-content:space-between;gap:16px;align-items:end;margin-bottom:16px}
    .section-title p{margin:0;color:var(--muted);max-width:70ch;line-height:1.75}
    .grid-4,.grid-3,.grid-2{display:grid;gap:16px}
    .grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
    .grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
    .grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
    .card{
      background:rgba(255,255,255,.96);
      border:1px solid rgba(17,84,216,.12);
      border-radius:22px;padding:20px;box-shadow:0 10px 24px rgba(13,46,120,.05);
      transition:transform .25s ease, box-shadow .25s ease, border-color .25s ease;
    }
    .card:hover{transform:translateY(-3px);box-shadow:0 18px 34px rgba(13,46,120,.10);border-color:rgba(17,84,216,.22)}
    .metric{font-size:30px;font-weight:800;color:var(--primary);line-height:1}
    .label{margin-top:10px;font-weight:700}
    .desc{margin:8px 0 0;color:var(--muted);line-height:1.72;font-size:14px}
    .feature h3,.case h3,.review h3,.resource h3,.help h3{margin:0 0 8px;font-size:18px}
    .list{margin:12px 0 0;padding:0;list-style:none;display:grid;gap:10px}
    .list li{display:flex;gap:10px;align-items:flex-start;color:var(--text);line-height:1.7;font-size:14px}
    .dot{width:10px;height:10px;border-radius:50%;margin-top:7px;background:linear-gradient(135deg,var(--primary),var(--accent));flex:0 0 auto}
    .steps{counter-reset:step}
    .step{
      position:relative;padding:22px 20px 20px 22px
    }
    .step:before{
      counter-increment:step;content:counter(step, decimal-leading-zero);
      position:absolute;top:16px;right:16px;font-size:13px;color:rgba(17,84,216,.35);font-weight:800
    }
    .step h3{margin-top:0}
    .compare{
      width:100%;border-collapse:separate;border-spacing:0;overflow:hidden;border-radius:20px;border:1px solid rgba(17,84,216,.12);background:#fff
    }
    .compare th,.compare td{padding:16px;border-bottom:1px solid #e6ecfb;text-align:left;vertical-align:top;font-size:14px;line-height:1.7}
    .compare th{background:#f3f7ff;font-size:14px}
    .compare tr:last-child td{border-bottom:none}
    .score{
      display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:12px
    }
    .stars{color:#ffb400;font-size:20px;letter-spacing:2px}
    .badge{
      display:inline-flex;align-items:center;border-radius:999px;padding:6px 10px;background:rgba(17,84,216,.08);color:var(--primary);font-size:12px;font-weight:700
    }
    .article-item,.link-item{
      display:flex;justify-content:space-between;gap:14px;align-items:center;padding:14px 0;border-bottom:1px dashed #dbe5fb
    }
    .article-item:last-child,.link-item:last-child{border-bottom:none}
    .article-item span,.link-item span{color:var(--muted);font-size:13px}
    .faq-item{border:1px solid rgba(17,84,216,.12);border-radius:18px;background:#fff;overflow:hidden}
    .faq-q{
      width:100%;border:none;background:linear-gradient(180deg,#fff,#f7faff);color:var(--text);
      padding:16px 18px;font-size:15px;font-weight:700;text-align:left;display:flex;justify-content:space-between;gap:16px;cursor:pointer
    }
    .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;padding:0 18px}
    .faq-item.open .faq-a{max-height:180px;padding-bottom:16px}
    .faq-a p{margin:0;color:var(--muted);line-height:1.75;font-size:14px}
    .reviews{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .review .role{color:var(--primary);font-size:13px;font-weight:700;margin-bottom:8px}
    .quote{font-size:14px;line-height:1.8;color:var(--text);margin:0}
    .rating{margin-top:12px;color:#ffb400;font-size:14px}
    .media-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:16px;align-items:start}
    .image-box{border-radius:20px;overflow:hidden;border:1px solid rgba(17,84,216,.12);background:#fff}
    .image-box img{width:100%;height:auto}
    .form-grid{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}
    input,select,textarea{
      width:100%;border:1px solid #d6e0f8;border-radius:14px;padding:13px 14px;font-size:14px;color:var(--text);background:#fff;outline:none;
    }
    textarea{min-height:128px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(17,84,216,.10)}
    .submit-row{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
    .note{font-size:12px;color:var(--muted);line-height:1.7}
    .footer{
      margin-top:24px;padding:24px 0 32px;border-top:1px solid rgba(17,84,216,.10);background:rgba(244,248,255,.85)
    }
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:18px;align-items:start}
    .footer a{color:var(--text)}
    .footer .muted{color:var(--muted);line-height:1.8}
    .bottom{margin-top:16px;padding-top:14px;border-top:1px solid rgba(17,84,216,.12);font-size:13px;color:var(--muted)}
    .floating{
      position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px
    }
    .float-btn{
      width:50px;height:50px;border-radius:16px;border:1px solid rgba(17,84,216,.14);
      background:#fff;display:grid;place-items:center;box-shadow:0 12px 24px rgba(17,84,216,.12);
      color:var(--primary);font-weight:800
    }
    .mobile-panel{display:none}
    .scroll-reveal{opacity:0;transform:translateY(16px);transition:opacity .55s ease, transform .55s ease}
    .scroll-reveal.in{opacity:1;transform:translateY(0)}
    .table-wrap{overflow:auto;border-radius:20px}
    @media (max-width: 1024px){
      .hero-grid,.media-grid,.footer-grid,.grid-4,.reviews{grid-template-columns:1fr 1fr}
      .grid-3{grid-template-columns:1fr 1fr}
    }
    @media (max-width: 768px){
      .nav-links,.nav-cta{display:none}
      .menu-btn{display:inline-flex}
      .mobile-panel{display:none;padding:0 0 14px}
      .mobile-panel.open{display:block}
      .mobile-panel .panel-inner{
        background:#fff;border:1px solid var(--line);border-radius:18px;padding:14px;display:grid;gap:10px
      }
      .mobile-panel a{padding:10px 12px;border-radius:12px;background:#f6f9ff}
      .hero-grid,.hero-points,.grid-4,.grid-3,.grid-2,.reviews,.media-grid,.footer-grid,.form-grid{grid-template-columns:1fr}
      .hero-main{padding:24px}
      .section-title{flex-direction:column;align-items:flex-start}
      .compare th,.compare td{padding:12px}
    }