:root{
  --bg:#0b0f19;
  --fg:#e8eefc;
  --muted:#b7c2df;
  --card:#121a2c;
  --accent:#7aa7ff;
  --border:#243252;
  --focus:#ffd36a;
}
[data-theme="light"]{
  --bg:#ffffff;
  --fg:#0c1220;
  --muted:#3b4a6b;
  --card:#f3f6ff;
  --accent:#2b6bff;
  --border:#d7e1ff;
  --focus:#ffb000;
}
*{box-sizing:border-box}
html{font-size:18px}
body{
  margin:0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background:var(--bg);
  color:var(--fg);
  line-height:1.5;
}
a{color:var(--accent); text-decoration:none}
a:hover{text-decoration:underline}
header{
  position:sticky; top:0;
  background:color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom:1px solid var(--border);
  z-index:10;
}
.wrap{max-width:1050px; margin:0 auto; padding:16px}
.brand{
  display:flex; align-items:center; justify-content:space-between; gap:12px;
}
.logo{
  display:flex; align-items:center; gap:10px;
  font-weight:800; letter-spacing:.3px;
}
.badge{
  display:inline-flex; align-items:center; gap:8px;
  padding:6px 10px;
  border:1px solid var(--border);
  border-radius:999px;
  color:var(--muted);
  font-size:.9rem;
}
nav{
  display:flex; flex-wrap:wrap; gap:10px; align-items:center; justify-content:space-between;
  margin-top:10px;
}
.nav-left, .nav-right{display:flex; flex-wrap:wrap; gap:10px; align-items:center}
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:10px 12px;
  border:1px solid var(--border);
  border-radius:12px;
  background:var(--card);
  color:var(--fg);
  cursor:pointer;
}
.btn:hover{filter:brightness(1.05)}
.btn:focus{outline:3px solid var(--focus); outline-offset:2px}
.btn.primary{
  background: var(--accent);
  color:#0b0f19;
  border-color: transparent;
  font-weight:700;
}
main{padding:22px 0 60px}
.hero{
  display:grid;
  grid-template-columns: 1.2fr .8fr;
  gap:18px;
  align-items:stretch;
}
@media (max-width: 880px){
  .hero{grid-template-columns:1fr}
}
.card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:18px;
  padding:18px;
}
h1{margin:0 0 8px; font-size:1.8rem}
h2{margin:14px 0 8px; font-size:1.25rem}
p{margin:0 0 10px; color:var(--muted)}
.kbd{
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size:.9rem;
  padding:2px 8px;
  border:1px solid var(--border);
  border-radius:999px;
  color:var(--fg);
}
.grid{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap:12px;
}
@media (max-width: 900px){ .grid{grid-template-columns:1fr}}
.biglink{
  display:flex; flex-direction:column; gap:8px;
  padding:14px;
  border:1px solid var(--border);
  border-radius:16px;
  background:color-mix(in srgb, var(--card) 92%, transparent);
}
.biglink strong{font-size:1.1rem}
.biglink span{color:var(--muted)}
.searchbox{
  display:flex; gap:10px; align-items:center;
}
.searchbox input{
  flex:1;
  padding:12px 12px;
  border-radius:12px;
  border:1px solid var(--border);
  background: var(--bg);
  color: var(--fg);
}
.searchbox input:focus{outline:3px solid var(--focus); outline-offset:2px}
footer{
  border-top:1px solid var(--border);
  color:var(--muted);
  padding:18px 0;
}
.small{font-size:.95rem; color:var(--muted)}
.visually-hidden{
  position:absolute;
  width:1px;height:1px;
  padding:0;margin:-1px;
  overflow:hidden;clip:rect(0,0,0,0);
  white-space:nowrap;border:0;
}