:root {
  --bg: #f6f3ec;
  --paper: #fffdf8;
  --ink: #1d1a16;
  --muted: #5e584f;
  --line: #e4ddd0;
  --link: #8a3b24;
  --link-hover: #5e2414;
  --chip: #efe8dc;
  --code: #f3eee6;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161411;
    --paper: #211e1a;
    --ink: #f3efe7;
    --muted: #b7b0a4;
    --line: #3a342c;
    --link: #f0a184;
    --link-hover: #ffd0bf;
    --chip: #2c2823;
    --code: #2a251f;
  }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Hiragino Sans", "Noto Sans JP", "Yu Gothic", sans-serif;
  line-height: 1.75;
}
a { color: var(--link); }
a:hover { color: var(--link-hover); }
.archive-wrap { width: min(760px, calc(100% - 32px)); margin-inline: auto; }
.archive-top {
  position: sticky;
  top: 0;
  z-index: 2;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.archive-bar { display: flex; justify-content: space-between; gap: 16px; align-items: center; min-height: 56px; }
.archive-brand { color: var(--ink); text-decoration: none; font-weight: 700; }
.archive-brand span { color: var(--muted); font-weight: 500; }
.archive-top nav { display: flex; flex-wrap: wrap; gap: 12px 16px; }
.archive-top nav a { color: var(--muted); text-decoration: none; font-size: 0.92rem; }
.archive-top nav a:hover { color: var(--ink); }
main { padding-block: 36px 64px; }
h1 { font-size: clamp(1.7rem, 4vw, 2.3rem); line-height: 1.35; margin: 0 0 12px; letter-spacing: -0.02em; }
h2 { font-size: 1.25rem; margin: 2rem 0 0.6rem; }
h3, h4 { margin: 1.4rem 0 0.4rem; }
.kicker, .meta, .lead, .note, .source { color: var(--muted); }
.lead { font-size: 1.05rem; }
.button {
  display: inline-block;
  margin: 0 8px 8px 0;
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--ink);
  color: var(--bg);
  text-decoration: none;
  font-weight: 700;
}
.button-quiet { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.years { display: flex; flex-wrap: wrap; gap: 8px; }
.years a {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 10px;
  background: var(--chip);
  text-decoration: none;
  color: var(--ink);
}
.years small, h2 small { color: var(--muted); font-weight: 500; }
.cards { display: grid; gap: 12px; }
.card {
  display: grid;
  gap: 4px;
  padding: 14px 16px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 14px;
  text-decoration: none;
  color: inherit;
}
.card time, .index time { color: var(--muted); font-size: 0.86rem; }
.card span { color: var(--muted); }
.archive-body { font-size: 1.02rem; }
.archive-body img { max-width: 100%; height: auto; display: block; margin: 1rem 0; border-radius: 8px; background: var(--chip); }
.archive-body pre {
  overflow: auto;
  padding: 12px 14px;
  background: var(--code);
  border-radius: 10px;
  line-height: 1.55;
}
.archive-body code { font-family: "SFMono-Regular", ui-monospace, monospace; font-size: 0.9em; }
.archive-body blockquote {
  margin: 1rem 0;
  padding: 0.2rem 0 0.2rem 1rem;
  border-left: 3px solid var(--line);
  color: var(--muted);
}
.archive-body li { margin: 0.2rem 0; }
.archive-body a.embed { display: inline-block; margin: 0.4rem 0; }
.index { list-style: none; padding: 0; }
.index li { padding: 8px 0; border-bottom: 1px solid var(--line); }
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 28px; }
.pager a { display: block; padding: 12px; border: 1px solid var(--line); border-radius: 12px; text-decoration: none; background: var(--paper); }
.pager .next { text-align: right; }
.source { font-size: 0.9rem; overflow-wrap: anywhere; }
.archive-foot { border-top: 1px solid var(--line); padding-block: 28px 40px; color: var(--muted); font-size: 0.9rem; }
.archive-foot a { margin-right: 8px; }
@media (max-width: 640px) {
  .archive-bar { flex-direction: column; align-items: flex-start; padding-block: 10px; }
  .pager { grid-template-columns: 1fr; }
  .pager .next { text-align: left; }
}