:root {
  --ink: #0e1014;
  --deck: #161921;
  --rule: #262a35;
  --text: #eceef2;
  --muted: #a6acb8;
  --signal: #e5243b;
  --signal-soft: #ff6b7c;
  color-scheme: dark;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--ink);
  color: var(--text);
  font: 400 1.0625rem/1.65 system-ui, -apple-system, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--text); text-decoration-thickness: 1px; text-underline-offset: 0.22em; text-decoration-color: var(--signal-soft); }
a:hover { color: #fff; text-decoration-color: var(--signal); }
:focus-visible { outline: 2px solid var(--signal-soft); outline-offset: 3px; border-radius: 6px; }
.wrap { width: min(760px, 100% - 32px); margin-inline: auto; }
header.top { border-bottom: 1px solid var(--rule); }
header.top .wrap { display: flex; align-items: center; justify-content: space-between; min-height: 60px; gap: 16px; }
.mark { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.15rem; text-decoration: none; }
nav { display: flex; gap: 18px; font-size: 0.95rem; }
nav a { color: var(--muted); text-decoration: none; }
nav a:hover { color: var(--text); }
article { padding: 48px 0 56px; }
article + article { border-top: 1px solid var(--rule); }
h1 { font-size: clamp(2rem, 5vw, 2.75rem); line-height: 1.1; letter-spacing: -0.02em; margin: 0; }
h2 { font-size: 1.25rem; margin: 36px 0 0; }
p, ul { margin: 14px 0 0; color: var(--muted); max-width: 68ch; }
li + li { margin-top: 8px; }
strong { color: var(--text); font-weight: 600; }
code { font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 0.88em; background: var(--deck); border: 1px solid var(--rule); padding: 2px 6px; border-radius: 6px; color: var(--text); }
.updated { font-size: 0.92rem; }
footer { border-top: 1px solid var(--rule); padding: 32px 0 44px; color: var(--muted); font-size: 0.92rem; }
footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px 32px; }
footer p { margin: 0; }