:root {
  color-scheme: light dark;
  --bg: #0d1117;
  --panel: #151b23;
  --text: #f5f7fa;
  --muted: #b7c0cc;
  --line: #2b3440;
  --accent: #f2c94c;
  --accent-text: #17130a;
  --link: #f6d76b;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  background: var(--bg);
  color: var(--text);
}
a { color: var(--link); }
a:hover { text-decoration-thickness: 2px; }
header {
  border-bottom: 1px solid var(--line);
  background: rgba(13,17,23,.96);
}
.nav {
  max-width: 980px;
  margin: 0 auto;
  padding: 18px 22px;
  display: flex;
  gap: 18px;
  align-items: center;
  flex-wrap: wrap;
}
.brand { font-weight: 800; letter-spacing: .2px; margin-right: auto; color: var(--text); text-decoration: none; }
.nav a:not(.brand) { color: var(--muted); text-decoration: none; font-size: .95rem; }
.nav a:hover { color: var(--text); }
main { max-width: 860px; margin: 0 auto; padding: 48px 22px 72px; }
.hero { padding: 28px 0 24px; }
h1 { font-size: clamp(2rem, 5vw, 3.3rem); line-height: 1.1; margin: 0 0 14px; }
h2 { margin-top: 38px; font-size: 1.35rem; }
h3 { margin-top: 28px; }
p, li { color: var(--muted); }
.lead { font-size: 1.12rem; max-width: 720px; }
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 22px;
  margin: 20px 0;
}
.grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(220px,1fr)); gap: 14px; margin-top: 26px; }
.grid a { display: block; background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 18px; text-decoration: none; color: var(--text); }
.grid a span { display: block; color: var(--muted); font-size: .92rem; margin-top: 4px; }
.button { display: inline-block; background: var(--accent); color: var(--accent-text); font-weight: 700; text-decoration: none; border-radius: 10px; padding: 11px 16px; }
.notice { border-left: 4px solid var(--accent); padding: 12px 16px; background: var(--panel); color: var(--muted); }
.meta { color: var(--muted); font-size: .9rem; }
footer { border-top: 1px solid var(--line); color: var(--muted); }
footer div { max-width: 980px; margin: 0 auto; padding: 24px 22px 42px; font-size: .9rem; }
code { background: var(--panel); border: 1px solid var(--line); padding: 2px 5px; border-radius: 5px; }
@media (prefers-color-scheme: light) {
  :root { --bg:#ffffff; --panel:#f6f7f9; --text:#17191d; --muted:#535c68; --line:#dde2e8; --accent:#e6b800; --accent-text:#15120a; --link:#725a00; }
  header { background: rgba(255,255,255,.96); }
}