:root {
  color-scheme: light dark;
  --bg: #fbfaf7;
  --text: #24211d;
  --muted: #706a62;
  --link: #1f5f8b;
  --line: #ded8cf;
  --surface: #ffffff;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #171717;
    --text: #eeeeea;
    --muted: #aaa49b;
    --link: #8abce0;
    --line: #34312d;
    --surface: #202020;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 15px;
  line-height: 1.55;
}

a {
  color: var(--link);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

.site-header {
  align-items: baseline;
  border-bottom: 1px solid var(--line);
  display: flex;
  gap: 12px;
  justify-content: space-between;
  padding: 16px max(18px, env(safe-area-inset-left));
}

.site-heading {
  align-items: baseline;
  display: flex;
  gap: 12px;
  min-width: 0;
}

.site-title {
  display: inline-block;
  color: var(--text);
  font-size: 1.15rem;
  font-weight: 700;
  text-decoration: none;
}

.site-subtitle {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0;
}

.feed-link {
  color: var(--muted);
  flex: 0 0 auto;
  font-size: 0.85rem;
  text-decoration: none;
}

.page {
  width: min(100%, 720px);
  margin: 0 auto;
  padding: 24px 18px 56px;
}

.section + .section {
  margin-top: 40px;
}

.entry-stream + .section,
.entry-stream + .page-nav {
  margin-top: 56px;
}

h1,
h2 {
  line-height: 1.25;
  margin: 0 0 16px;
}

h1 {
  font-size: 1.7rem;
}

h2 {
  font-size: 1.25rem;
}

.entry-list,
.month-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.entry-list li,
.month-list li {
  border-bottom: 1px solid var(--line);
  display: grid;
  gap: 4px;
  padding: 14px 0;
}

time,
.count {
  color: var(--muted);
  font-size: 0.9rem;
}

.entry {
  font-family: "Hiragino Mincho ProN", "Yu Mincho", "YuMincho", "Noto Serif JP", serif;
  line-height: 1.55;
  overflow-wrap: anywhere;
}

.entry-stream {
  display: grid;
  gap: 18px;
}

.entry-summary {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px 18px 6px;
}

.entry-future {
  background: color-mix(in srgb, var(--surface) 88%, var(--link));
}

.entry-future .entry-date {
  color: var(--text);
  font-weight: 700;
}

.entry-date {
  display: inline-block;
  font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans CJK JP", "Noto Sans JP", "Yu Gothic", "YuGothic", system-ui, sans-serif;
  margin-bottom: 10px;
}

.entry-date-link {
  color: inherit;
  text-decoration: none;
}

.entry h1 {
  margin-bottom: 24px;
}

.entry p {
  margin: 0 0 1.2em;
}

.entry ul,
.entry ol {
  margin: 0 0 1.2em;
}

.entry li {
  margin: 0;
}

.entry .math-display {
  margin: 0 0 1.2em;
  overflow-x: auto;
}

.entry a {
  text-decoration: none;
}

.entry img {
  height: auto;
  max-width: 100%;
}

.entry blockquote {
  border-left: 4px solid var(--line);
  color: var(--muted);
  margin: 1.4em 0;
  padding-left: 1em;
}

.entry code {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 0.1em 0.3em;
}

.entry pre {
  background: var(--surface);
  border: 1px solid var(--line);
  overflow-x: auto;
  padding: 14px;
}

.entry pre code {
  background: transparent;
  border: 0;
  padding: 0;
}

.entry-nav {
  border-top: 1px solid var(--line);
  display: flex;
  gap: 14px;
  justify-content: space-between;
  margin-top: 36px;
  padding-top: 18px;
}

.page-nav {
  border-top: 1px solid var(--line);
  padding-top: 18px;
}