:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --text: #1f2328;
  --muted: #656d76;
  --border: #d0d7de;
  --link: #0969da;
  --hot: #d9480f;
  --hot-bg: #fff4ec;
  --new: #1a7f37;
  --new-bg: #dafbe1;
  --gh: #57606a;
  --zn: #3ea8ff;
  --tag-bg: #eaeef2;
  --warning-bg: #fff1e5;
  --warning-border: #f0883e;
  --notice-bg: #ddf4ff;
  --notice-border: #54aeff;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1117;
    --card: #161b22;
    --text: #e6edf3;
    --muted: #8b949e;
    --border: #30363d;
    --link: #58a6ff;
    --hot: #ff8c4b;
    --hot-bg: #2a1a10;
    --new: #3fb950;
    --new-bg: #12361f;
    --gh: #8b949e;
    --zn: #58b4ff;
    --tag-bg: #21262d;
    --warning-bg: #3a2210;
    --warning-border: #d18616;
    --notice-bg: #0c2d6b;
    --notice-border: #1f6feb;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 16px 24px 32px;
  background: var(--bg);
  color: var(--text);
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans",
    "Noto Sans JP", Meiryo, sans-serif;
  font-size: 14px;
  line-height: 1.5;
}

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

a:hover {
  text-decoration: underline;
}

.header {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 12px;
}

.header-main,
.header-sub {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.brand {
  font-size: 18px;
  margin: 0;
}

.nav {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav button {
  font: inherit;
  padding: 3px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--card);
  color: var(--text);
  cursor: pointer;
}

.nav button:disabled {
  opacity: 0.4;
  cursor: default;
}

.date {
  font-size: 16px;
  font-weight: 700;
  min-width: 10em;
  text-align: center;
}

.header-sub {
  color: var(--muted);
  font-size: 12px;
}

.notices:empty {
  display: none;
}

.notice,
.warning {
  margin: 0 0 8px;
  padding: 6px 10px;
  border-radius: 6px;
  border: 1px solid var(--notice-border);
  background: var(--notice-bg);
  font-size: 13px;
}

.warning {
  border-color: var(--warning-border);
  background: var(--warning-bg);
  font-weight: 600;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 10px;
}

.card {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--card);
  min-height: 96px;
}

.card.hot {
  border-color: var(--hot);
  box-shadow: inset 0 0 0 1px var(--hot);
  background: var(--hot-bg);
}

.card .title {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  overflow-wrap: anywhere;
}

.card .title a {
  color: inherit;
}

.card .sub {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card .meta {
  margin: auto 0 0;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  font-size: 12px;
  color: var(--muted);
}

.src {
  font-size: 11px;
  padding: 0 7px;
  border-radius: 10px;
  border: 1px solid currentColor;
}

.src.gh {
  color: var(--gh);
}

.src.zn {
  color: var(--zn);
}

.tag {
  font-size: 11px;
  padding: 0 6px;
  border-radius: 4px;
  background: var(--tag-bg);
}

.count {
  color: var(--text);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.delta {
  color: var(--hot);
}

.new {
  font-size: 11px;
  font-weight: 700;
  color: var(--new);
  background: var(--new-bg);
  padding: 0 6px;
  border-radius: 4px;
}

.hot-mark {
  color: var(--hot);
}

.empty {
  color: var(--muted);
  padding: 24px 0;
}

.footer {
  margin-top: 20px;
  color: var(--muted);
  font-size: 12px;
}

@media (max-width: 640px) {
  body {
    padding: 12px 16px 24px;
  }
  .grid {
    grid-template-columns: 1fr;
  }
}