:root {
  color-scheme: dark;
  --bg: #101213;
  --panel: #151819;
  --ink: #e8e6df;
  --ink2: #b8bbb8;
  --muted: #969d9f;
  --line: #303637;
  --accent: #d8cfb6;
  --sans: system-ui, -apple-system, "Segoe UI", "Noto Sans JP", sans-serif;
  --mono: ui-monospace, "Cascadia Mono", monospace;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 14px/1.8 var(--sans);
}
a {
  color: inherit;
}
button,
select,
input {
  font: inherit;
}
button,
select {
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 8px 14px;
}
button,
summary,
select {
  cursor: pointer;
}
button:hover,
select:hover {
  border-color: var(--muted);
}
button:disabled {
  opacity: 0.45;
  cursor: wait;
}
:focus-visible {
  outline: 1px solid var(--accent);
  outline-offset: 5px;
}
input {
  accent-color: var(--accent);
}
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid var(--line);
  min-height: 76px;
}
.site-name {
  font:
    22px Georgia,
    "Times New Roman",
    serif;
  letter-spacing: -0.025em;
  text-decoration: none;
  white-space: nowrap;
}
.site-nav {
  display: flex;
  gap: 30px;
  align-self: stretch;
}
.site-nav a {
  display: flex;
  align-items: center;
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  margin-bottom: -1px;
  font-size: 13px;
}
.site-nav a:hover {
  color: var(--ink);
}
.site-nav a[aria-current] {
  color: var(--ink);
  border-bottom-color: var(--ink);
}
.note {
  color: var(--muted);
  font-size: 12px;
}
summary {
  color: var(--ink2);
}
details {
  border-top: 1px solid var(--line);
  padding: 16px 0;
}
footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 11px;
  padding: 18px 0;
}
@media (max-width: 600px) {
  .site-header {
    flex-wrap: wrap;
    gap: 0;
    padding-top: 22px;
  }
  .site-name {
    font-size: 22px;
  }
  .site-nav {
    width: 100%;
    gap: 30px;
    height: 54px;
  }
}