:root {
  --bg: #ffffff;
  --fg: #1f2328;
  --muted: #59636e;
  --border: #d1d9e0;
  --soft: #f6f8fa;
  --accent: #0969da;
  --accent-fg: #ffffff;
  --header-h: 3.25rem;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1117;
    --fg: #e6edf3;
    --muted: #9198a1;
    --border: #30363d;
    --soft: #151b23;
    --accent: #4493f8;
    --accent-fg: #0d1117;
  }
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 1rem);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 1rem/1.65 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

code, kbd {
  font: 0.875em ui-monospace, "Cascadia Mono", Consolas, "Liberation Mono", monospace;
}
code {
  background: var(--soft);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.1em 0.35em;
}
kbd {
  background: var(--soft);
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  border-radius: 4px;
  padding: 0.05em 0.4em;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.25rem;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}
.brand { font-weight: 700; font-size: 1.125rem; letter-spacing: 0.02em; color: var(--fg); }
.brand:hover { text-decoration: none; }
.toplinks a { margin-left: 1.25rem; color: var(--muted); }
.toplinks a:hover { color: var(--fg); text-decoration: none; }

.layout {
  display: grid;
  grid-template-columns: 14rem minmax(0, 44rem);
  gap: 3rem;
  max-width: 64rem;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.sidebar {
  position: sticky;
  top: var(--header-h);
  align-self: start;
  padding: 2rem 0;
}
.sidebar ul { list-style: none; margin: 0; padding: 0; }
.sidebar a {
  display: block;
  padding: 0.3rem 0.75rem;
  border-left: 2px solid var(--border);
  color: var(--muted);
}
.sidebar a:hover { color: var(--fg); border-left-color: var(--fg); text-decoration: none; }

main { padding: 2rem 0 4rem; }

h1 { font-size: 2rem; line-height: 1.25; margin: 0 0 1rem; }
h2 {
  font-size: 1.5rem;
  line-height: 1.3;
  margin: 3rem 0 1rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}
h3 { font-size: 1.0625rem; margin: 1.75rem 0 0.25rem; }
p, ul, ol { margin: 0.75rem 0; }
li { margin: 0.35rem 0; }
.lead { font-size: 1.125rem; }

img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 1.5rem 0;
  border: 1px solid var(--border);
  border-radius: 8px;
}

.download {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem 1.5rem;
}
.download p { margin: 0.6rem 0; }
.download .version { margin-top: 0; color: var(--muted); }
.button {
  display: inline-block;
  padding: 0.55rem 1rem;
  background: var(--accent);
  color: var(--accent-fg);
  font-weight: 600;
  border-radius: 6px;
}
.button:hover { text-decoration: none; filter: brightness(1.08); }
.meta { margin-left: 0.5rem; color: var(--muted); }
.hashes { margin: 1rem 0 0; font-size: 0.875rem; color: var(--muted); }
.hashes dt { margin-top: 0.6rem; }
.hashes dd { margin: 0.15rem 0 0; overflow-wrap: anywhere; }

.tag { margin-left: 0.6rem; font-size: 0.875rem; font-weight: 400; color: var(--muted); }
.date { margin: 0 0 0.5rem; color: var(--muted); }
.notes { margin: 0.5rem 0 1rem; }
.hash { margin: 0.1rem 0 0.9rem; font-size: 0.8125rem; overflow-wrap: anywhere; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; margin: 1rem 0; }
th, td {
  text-align: left;
  vertical-align: top;
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--border);
}
th { font-size: 0.8125rem; font-weight: 600; color: var(--muted); }
td:first-child { white-space: nowrap; }

footer {
  margin-top: 4rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9375rem;
}
footer p { margin: 0.25rem 0; }

@media (max-width: 52rem) {
  .layout { display: block; }
  .sidebar { position: static; padding: 1rem 0 0; }
  .sidebar ul { display: flex; flex-wrap: wrap; gap: 0.35rem 0.5rem; }
  .sidebar a { border: 1px solid var(--border); border-radius: 6px; padding: 0.25rem 0.6rem; }
  h1 { font-size: 1.625rem; }
}