:root {
  color-scheme: dark;
  --bg: #0a0a0a;
  --card: #141414;
  --text: #f5f5f7;
  --muted: #a1a1aa;
  --border: #27272a;
}
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
}
main {
  max-width: 760px;
  margin: 0 auto;
  padding: 48px 20px 64px;
}
.logo {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}
.logo a {
  color: inherit;
  text-decoration: none;
}
h1 {
  font-size: clamp(1.6rem, 4vw, 2.1rem);
  line-height: 1.25;
  margin: 12px 0;
}
.meta {
  color: var(--muted);
  margin-bottom: 20px;
}
.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
}
.tabs a {
  font-size: 0.88rem;
  color: var(--muted);
  text-decoration: none;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 14px;
}
.tabs a.on,
.tabs a:hover {
  color: #fff;
  border-color: #52525b;
}
section {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 22px 24px;
  margin-bottom: 16px;
}
h2 {
  font-size: 1.05rem;
  margin: 0 0 10px;
}
p,
ul {
  margin: 0 0 12px;
}
ul {
  padding-left: 1.25rem;
}
li + li {
  margin-top: 6px;
}
a {
  color: #fff;
}
strong {
  color: #fff;
}
footer {
  color: var(--muted);
  font-size: 0.92rem;
}