:root {
  color-scheme: light dark;
  --bg: #f6f7fb;
  --surface: #ffffff;
  --text: #111827;
  --body: #374151;
  --muted: #6b7280;
  --line: #e5e7eb;
  --accent: #0f766e;
  --accent-soft: #ccfbf1;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1120;
    --surface: #111827;
    --text: #f9fafb;
    --body: #d1d5db;
    --muted: #9ca3af;
    --line: #1f2937;
    --accent: #2dd4bf;
    --accent-soft: #123434;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei UI", sans-serif;
}
.top {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: calc(14px + env(safe-area-inset-top)) 16px 12px;
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}
h1 { margin: 0; font-size: 22px; letter-spacing: 0; }
p { margin: 0; }
#updated { margin-top: 3px; color: var(--muted); font-size: 12px; }
button {
  border: 0;
  border-radius: 8px;
  padding: 9px 12px;
  background: var(--accent-soft);
  color: var(--text);
  font-weight: 700;
}
.tabs {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 8px;
  padding: 10px 12px;
  background: var(--bg);
}
.tabs button {
  white-space: nowrap;
  padding: 9px 6px;
  color: var(--muted);
  background: var(--surface);
  border: 1px solid var(--line);
}
.tabs button.active {
  color: #042f2e;
  background: var(--accent);
  border-color: var(--accent);
}
main { padding: 0 12px 28px; }
.alerts {
  margin: 4px 0 10px;
  padding: 10px 12px;
  border-radius: 8px;
  background: #991b1b;
  color: #fff;
  font-size: 13px;
  line-height: 1.45;
}
.card {
  margin: 10px 0;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}
.card.read { opacity: .58; }
.meta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 7px;
  color: var(--muted);
  font-size: 12px;
}
.badge {
  color: #064e3b;
  background: var(--accent-soft);
  border-radius: 999px;
  padding: 2px 8px;
  font-weight: 700;
}
.headline {
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: var(--text);
  text-decoration: none;
  text-align: left;
  font-size: 17px;
  font-weight: 800;
  line-height: 1.35;
}
.summary {
  margin-top: 9px;
  color: var(--body);
  font-size: 14px;
  line-height: 1.6;
}
details {
  margin-top: 10px;
  color: var(--body);
  font-size: 13px;
}
details a { color: var(--accent); }
.empty {
  margin-top: 26px;
  text-align: center;
  color: var(--muted);
}