:root {
  --bg: #f6f7f9;
  --text: #1a1f2e;
  --muted: #5c6578;
  --border: #d8dde6;
  --accent: #2f5a8a;
  --accent-hover: #24456a;
  --error: #9b2c2c;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}
.wrap { max-width: 960px; margin: 0 auto; padding: 1rem 1.25rem 2rem; }
.site-header {
  background: #fff;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1rem;
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
}
.brand { font-weight: 600; text-decoration: none; color: var(--text); }
nav a { margin-left: 1rem; color: var(--accent); text-decoration: none; }
nav a:hover { text-decoration: underline; }
h1 { font-size: 1.5rem; margin: 0 0 1rem; }
h2 { font-size: 1.125rem; margin: 1.25rem 0 0.5rem; }
.toolbar { display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; }
.button, button {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 0.45rem 0.9rem;
  border-radius: 4px;
  cursor: pointer;
  text-decoration: none;
  font-size: 0.95rem;
}
.button:hover, button:hover { background: var(--accent-hover); }
.button-secondary { background: #fff; color: var(--text); border: 1px solid var(--border); }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 0.75rem; margin-bottom: 1.5rem; }
.stat { background: #fff; border: 1px solid var(--border); padding: 0.75rem; border-radius: 6px; }
.stat-value { display: block; font-size: 1.5rem; font-weight: 600; }
.stat-label { color: var(--muted); font-size: 0.875rem; }
.data-table { width: 100%; border-collapse: collapse; background: #fff; border: 1px solid var(--border); }
.data-table th, .data-table td { padding: 0.5rem 0.65rem; border-bottom: 1px solid var(--border); text-align: left; }
.data-table th { background: #eef1f6; font-weight: 600; }
.search-form { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1rem; align-items: center; }
.search-form input[type="search"] { flex: 1; min-width: 200px; padding: 0.4rem 0.5rem; }
.stack-form label { display: block; margin-bottom: 0.75rem; }
.stack-form input, .stack-form textarea { width: 100%; max-width: 480px; padding: 0.4rem 0.5rem; margin-top: 0.25rem; }
.grid-two { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
@media (max-width: 720px) { .grid-two { grid-template-columns: 1fr; } }
.detail-list dt { font-weight: 600; margin-top: 0.35rem; }
.detail-list dd { margin: 0 0 0.25rem; }
.muted { color: var(--muted); }
.error { color: var(--error); }
.badge { display: inline-block; background: #fff3cd; padding: 0.2rem 0.5rem; border-radius: 4px; }
.plain-list { padding-left: 1.2rem; }