/* airc.oroboro.com — utilitarian. Readable by people, unremarkable to machines. */
:root {
  --bg: #ffffff; --fg: #1a1a1a; --muted: #5c6166; --line: #e2e5e8; --code-bg: #f4f5f7;
  --link: #0b57d0; --accent: #0b57d0; --side-bg: #fafbfc; --mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #111417; --fg: #e6e8ea; --muted: #9aa3ab; --line: #2a3036; --code-bg: #1a1f24; --link: #7cb0ff; --accent: #7cb0ff; --side-bg: #14181c; }
}
* { box-sizing: border-box; }
html { font-size: 16px; }
body { margin: 0; background: var(--bg); color: var(--fg); font-family: var(--sans); line-height: 1.55; }
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
code, pre, kbd { font-family: var(--mono); font-size: 0.92em; }
code { background: var(--code-bg); padding: 0.1em 0.35em; border-radius: 3px; }
pre { background: var(--code-bg); padding: 0.9rem 1rem; border-radius: 4px; overflow-x: auto; line-height: 1.45; border: 1px solid var(--line); }
pre code { background: none; padding: 0; font-size: 0.86rem; }
.top { display: flex; align-items: baseline; gap: 1rem; padding: 0.7rem 1.25rem; border-bottom: 1px solid var(--line); }
.brand { font-family: var(--mono); font-weight: 700; font-size: 1.15rem; color: var(--fg); }
.tag { color: var(--muted); font-size: 0.9rem; }
.raw { margin-left: auto; font-family: var(--mono); font-size: 0.85rem; color: var(--muted); }
.wrap { display: flex; min-height: calc(100vh - 3rem); }
.side { flex: 0 0 15rem; background: var(--side-bg); border-right: 1px solid var(--line); padding: 1rem 0; }
.side ul { list-style: none; margin: 0; padding: 0; }
.side li a { display: block; padding: 0.35rem 1.25rem; color: var(--fg); }
.side li.cur a { border-left: 3px solid var(--accent); padding-left: calc(1.25rem - 3px); font-weight: 600; }
.side li a:hover { background: var(--code-bg); text-decoration: none; }
.side .aux { margin-top: 1.25rem; padding-top: 0.75rem; border-top: 1px solid var(--line); }
.side .aux a { font-family: var(--mono); font-size: 0.85rem; color: var(--muted); }
main { flex: 1 1 auto; min-width: 0; padding: 1.5rem 2.5rem 3rem; max-width: 60rem; }
article > *:first-child { margin-top: 0; }
h1 { font-size: 1.9rem; line-height: 1.2; margin: 0 0 1rem; }
h2 { font-size: 1.35rem; margin: 2.2rem 0 0.6rem; padding-top: 0.4rem; border-top: 1px solid var(--line); }
h3 { font-size: 1.1rem; margin: 1.6rem 0 0.4rem; }
h4 { font-size: 1rem; margin: 1.2rem 0 0.3rem; }
.anchor { margin-left: 0.4rem; color: var(--line); font-weight: 400; }
h1:hover .anchor, h2:hover .anchor, h3:hover .anchor, h4:hover .anchor { color: var(--muted); }
p, ul, ol { margin: 0.6rem 0; }
li { margin: 0.2rem 0; }
li > ul, li > ol { margin: 0.2rem 0 0.2rem 0; }
table { border-collapse: collapse; margin: 0.8rem 0; width: 100%; font-size: 0.95rem; }
th, td { text-align: left; vertical-align: top; padding: 0.4rem 0.6rem; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-weight: 600; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.03em; }
blockquote { margin: 0.8rem 0; padding: 0.2rem 1rem; border-left: 3px solid var(--line); color: var(--muted); }
hr { border: 0; border-top: 1px solid var(--line); margin: 1.5rem 0; }
input[type=checkbox] { margin-right: 0.3rem; }
.toc { float: right; margin: 0 0 1rem 1.5rem; padding: 0.6rem 0.9rem; background: var(--side-bg); border: 1px solid var(--line); border-radius: 4px; max-width: 18rem; font-size: 0.88rem; }
.tochead { color: var(--muted); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: 0.3rem; }
.toc ol { margin: 0; padding-left: 1.2rem; }
footer { margin-top: 3rem; padding-top: 1rem; border-top: 1px solid var(--line); color: var(--muted); font-size: 0.85rem; }
@media (max-width: 800px) {
  .wrap { display: block; }
  .side { border-right: 0; border-bottom: 1px solid var(--line); padding: 0.5rem 0; }
  .side ul { display: flex; flex-wrap: wrap; gap: 0 0.25rem; padding: 0 0.5rem; }
  .side li a { padding: 0.3rem 0.6rem; font-size: 0.92rem; }
  .side .aux { border-top: 0; margin-top: 0; padding-top: 0; }
  main { padding: 1rem 1rem 2rem; }
  .toc { float: none; margin: 0 0 1rem; max-width: none; }
}