:root {
  --bg: #0f1115;
  --card: #181b21;
  --accent: #ffcc33;
  --text: #f2f2f2;
  --muted: #9aa0a6;
  --border: #262a32;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  padding-bottom: 24px;
}
header {
  padding: 20px 16px 12px;
}
header h1 {
  margin: 0 0 4px;
  font-size: 22px;
}
header p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}
.tabs {
  display: flex;
  gap: 8px;
  padding: 0 16px 12px;
  overflow-x: auto;
}
.tab {
  flex: none;
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 14px;
  cursor: pointer;
}
.tab.active {
  background: var(--accent);
  color: #1a1400;
  border-color: var(--accent);
  font-weight: 600;
}
.list {
  padding: 0 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px 16px;
}
.card h3 {
  margin: 0 0 4px;
  font-size: 16px;
}
.card p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}
.article-body {
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--text);
  display: none;
}
.card.open .article-body { display: block; }
.checklist-item {
  display: flex;
  gap: 10px;
}
.checklist-item .num {
  flex: none;
  width: 24px; height: 24px;
  border-radius: 50%;
  background: var(--accent);
  color: #1a1400;
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 700;
}
.empty {
  padding: 24px 16px;
  color: var(--muted);
  text-align: center;
  font-size: 14px;
}