:root{
  --bg:#ffffff;
  --text:#111827;
  --muted:#6b7280;
  --border:#e5e7eb;
  --card:#f9fafb;
  --accent:#2563eb;
  --accent2:#22c55e;
  --shadow: 0 10px 30px rgba(17,24,39,.08);
  --radius:18px;
  --max: 980px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.55;
}
a{color:var(--accent); text-decoration:none}
a:hover{text-decoration:underline}
header{
  position:sticky; top:0; z-index:50;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--border);
}
.wrap{max-width:var(--max); margin:0 auto; padding:0 16px}
.topbar{display:flex; align-items:center; justify-content:space-between; gap:12px; padding:10px 0}
.brand{display:flex; align-items:center; gap:12px}
.brand img{height:34px; width:auto}
.nav{display:flex; gap:14px; flex-wrap:wrap}
.nav a{color:var(--text); font-weight:600; font-size:14px; padding:8px 10px; border-radius:10px}
.nav a:hover{background:rgba(37,99,235,.08); text-decoration:none}
.search{display:flex; gap:8px; align-items:center}
.search input{
  width:220px; max-width:52vw;
  padding:10px 12px; border:1px solid var(--border); border-radius:12px;
}
.search button{
  border:1px solid var(--border); background:#fff; padding:10px 12px;
  border-radius:12px; font-weight:700; cursor:pointer;
}
main{padding:22px 0 44px}
.hero{
  padding:18px 18px;
  border:1px solid var(--border);
  border-radius:var(--radius);
  background:linear-gradient(135deg, rgba(34,197,94,.08), rgba(37,99,235,.08));
  box-shadow:var(--shadow);
}
.hero h1{margin:0 0 8px; font-size:28px}
.hero p{margin:0; color:var(--muted)}
.grid{display:grid; grid-template-columns:repeat(12,1fr); gap:16px; margin-top:18px}
.col-8{grid-column: span 8}
.col-4{grid-column: span 4}
@media (max-width:900px){.col-8,.col-4{grid-column:span 12}}
.card{
  border:1px solid var(--border);
  border-radius:var(--radius);
  background:var(--card);
  box-shadow:var(--shadow);
  padding:16px;
}
.card h2{margin:0 0 10px; font-size:18px}
.list{display:flex; flex-direction:column; gap:10px}
.item{
  display:flex; gap:12px; align-items:flex-start;
  padding:12px; border:1px solid var(--border); border-radius:14px; background:#fff;
}
.item:hover{border-color:rgba(37,99,235,.35)}
.badge{font-size:12px; color:var(--muted)}
h1{font-size:30px}
h2{font-size:22px; margin-top:28px}
h3{font-size:18px; margin-top:18px}
.lead{font-size:18px}
.muted{color:var(--muted)}
.breadcrumb{font-size:13px; color:var(--muted); margin:10px 0 0}
.breadcrumb a{color:var(--muted)}
.content section{margin-top:18px}
.download-box .btn-row{display:flex; flex-wrap:wrap; gap:10px; margin:10px 0}
.btn{
  display:inline-block;
  background:var(--accent);
  color:#fff;
  padding:10px 14px;
  border-radius:14px;
  font-weight:800;
  text-decoration:none;
}
.btn:hover{filter:brightness(0.95); text-decoration:none}
.btn.secondary{background:#111827}
.gallery{display:grid; grid-template-columns:repeat(3,1fr); gap:12px}
.gallery img{width:100%; height:auto; border-radius:16px; border:1px solid var(--border); background:#fff}
.gallery figure{margin:0}
.gallery figcaption{font-size:12px; color:var(--muted); margin-top:6px}
@media(max-width:900px){.gallery{grid-template-columns:1fr}}
.video{
  position:relative; padding-top:56.25%; border-radius:16px; overflow:hidden;
  border:1px solid var(--border); background:#000;
}
.video iframe{position:absolute; inset:0; width:100%; height:100%}
details{
  border:1px solid var(--border);
  border-radius:14px;
  background:#fff;
  padding:10px 12px;
  margin:10px 0;
}
details summary{cursor:pointer; font-weight:700}
footer{
  border-top:1px solid var(--border);
  padding:18px 0;
  color:var(--muted);
  font-size:13px;
}
small a{color:var(--muted)}