:root {
  --bg: #F2EEE6;
  --paper: #FAF8F3;
  --ink: #1C1A17;
  --ink-soft: #6B6459;
  --rule: rgba(28, 26, 23, 0.16);
  --stamp: #4A4F8F;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17161B;
    --paper: #201F26;
    --ink: #EDE8DF;
    --ink-soft: #918A80;
    --rule: rgba(237, 232, 223, 0.16);
    --stamp: #9AA3E4;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "IBM Plex Sans", system-ui, sans-serif;
  font-size: 17px;
  line-height: 1.6;
}

.wrap { max-width: 640px; margin: 0 auto; padding: 56px 24px 80px; }

header { display: flex; align-items: center; gap: 14px; padding-bottom: 20px; border-bottom: 1px solid var(--rule); }
header svg { flex-shrink: 0; }
.mark-name { font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 13px; letter-spacing: 0.22em; font-weight: 500; }

h1 { font-family: Spectral, Georgia, serif; font-weight: 400; font-size: 40px; line-height: 1.1; letter-spacing: -0.02em; margin: 40px 0 8px; }
h2 { font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 12px; letter-spacing: 0.2em; color: var(--ink-soft); margin: 40px 0 12px; font-weight: 500; }
p { margin: 0 0 16px; }
.lede { font-family: Spectral, Georgia, serif; font-style: italic; font-size: 20px; line-height: 1.5; color: var(--ink-soft); margin-bottom: 32px; }
.date { font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 11px; letter-spacing: 0.1em; color: var(--ink-soft); }

ul { margin: 0 0 16px; padding-left: 20px; }
li { margin-bottom: 8px; }

a { color: var(--stamp); text-underline-offset: 3px; }

.note { background: var(--paper); border: 1px solid var(--rule); padding: 18px 20px; margin: 28px 0; }
.note p:last-child { margin-bottom: 0; }

footer { margin-top: 56px; padding-top: 20px; border-top: 1px solid var(--rule); font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 11px; letter-spacing: 0.08em; color: var(--ink-soft); display: flex; gap: 20px; flex-wrap: wrap; }

.lang { float: right; font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 11px; letter-spacing: 0.1em; }