:root { color-scheme: dark; }
[data-md-color-scheme="slate"] {
  --md-primary-fg-color: #07111f;
  --md-primary-bg-color: #ffffff;
  --md-accent-fg-color: #2dd4bf;
  --md-default-bg-color: #1f232b;
  --md-default-fg-color: #d8dee9;
  --md-typeset-color: #d8dee9;
  --md-typeset-a-color: #67e8f9;
}
body,.md-main{background:#1f232b}
.vna-header{background:#07111f!important;border-bottom:1px solid rgba(148,163,184,.20);box-shadow:none}
.vna-topbar{max-width:1280px;margin:0 auto;min-height:86px;padding:0 30px;display:flex;align-items:center;justify-content:space-between}
.vna-brand{display:flex;align-items:center;gap:18px;color:#fff!important;font-weight:800;font-size:21px;text-decoration:none}
.vna-brand img{height:58px;width:auto;display:block}
.vna-links{display:flex;align-items:center;gap:24px}
.vna-links a{color:#cbd5e1!important;text-decoration:none;font-size:14px;font-weight:500}
.vna-links a:hover{color:#67e8f9!important}
.vna-portal{border:1px solid rgba(148,163,184,.35);border-radius:999px;padding:10px 18px;background:rgba(15,23,42,.45)}
.vna-mobile-menu{display:none}
.md-header__topic,.md-header__title{display:none!important}
.md-search{display:flex!important}
.md-sidebar{padding-top:1rem}
.md-typeset h1{color:#f8fafc;font-weight:650}
.md-typeset h2,.md-typeset h3{color:#f1f5f9}
.md-typeset pre>code{background:#0b1220}
.md-footer{background:#07111f}
.vna-card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:24px 0}
.vna-card{border:1px solid rgba(148,163,184,.18);border-radius:16px;padding:18px;background:rgba(15,23,42,.35)}
.vna-card h3{margin-top:0}
@media(max-width:900px){.vna-links{display:none}.vna-mobile-menu{display:inline-flex}.vna-brand img{height:44px}.vna-brand span{font-size:17px}.vna-card-grid{grid-template-columns:1fr}}