/* 站点样式：无外部字体、无 CDN、无构建。
 * 颜色跟随系统主题，中文优先使用系统自带的中文字体。 */

:root {
  color-scheme: light dark;
  --fg: #1f2328;
  --muted: #59636e;
  --bg: #ffffff;
  --line: #d1d9e0;
  --accent: #0969da;
  --tag-bg: #eaeef2;
  --tag-fg: #59636e;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fg: #e6edf3;
    --muted: #9198a1;
    --bg: #0d1117;
    --line: #30363d;
    --accent: #4493f8;
    --tag-bg: #21262d;
    --tag-fg: #9198a1;
  }
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  padding: 2.5rem 1.25rem 4rem;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  font-size: 16px;
  line-height: 1.7;
}

main,
header,
footer {
  max-width: 46rem;
  margin: 0 auto;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover,
a:focus {
  text-decoration: underline;
}

a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 3px;
}

h1 {
  margin: 0 0 0.25rem;
  font-size: 1.5rem;
  line-height: 1.35;
}

h1 .sub {
  color: var(--muted);
  font-size: 1rem;
  font-weight: 400;
}

h2 {
  margin: 2.25rem 0 0.75rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--line);
  font-size: 1.05rem;
  letter-spacing: 0.02em;
}

header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}

.lang {
  color: var(--muted);
  font-size: 0.925rem;
  white-space: nowrap;
}

.lang strong {
  color: var(--fg);
}

.sep {
  padding: 0 0.25rem;
  color: var(--muted);
}

ul.repos {
  margin: 0;
  padding: 0;
  list-style: none;
}

ul.repos > li {
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--line);
}

ul.repos > li:last-child {
  border-bottom: 0;
}

.name {
  display: inline-block;
  margin-right: 0.5rem;
  font-weight: 600;
}

.name code {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
    "Liberation Mono", monospace;
  font-size: 0.95em;
}

.desc {
  display: block;
  color: var(--muted);
  font-size: 0.925rem;
}

.tags {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.25rem;
  font-size: 0.85rem;
}

.tag {
  padding: 0.05rem 0.45rem;
  border-radius: 999px;
  background: var(--tag-bg);
  color: var(--tag-fg);
  white-space: nowrap;
}

.tag-archived {
  background: transparent;
  border: 1px solid var(--line);
}

.tag-fork {
  background: transparent;
  border: 1px dashed var(--line);
}

footer {
  margin-top: 3rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.875rem;
}

/* 根页：语言选择兜底 */
body.root {
  display: flex;
  align-items: center;
  min-height: 100vh;
  padding-top: 0;
  padding-bottom: 0;
}

body.root main {
  width: 100%;
  text-align: center;
}

body.root .choose {
  margin: 0.75rem 0 0.5rem;
  color: var(--muted);
}

body.root .choices {
  margin: 0;
  font-size: 1.15rem;
}

body.root .note {
  margin-top: 1.5rem;
  color: var(--muted);
  font-size: 0.85rem;
}