:root {
  /* Nature palette: deep green background + warm neutrals + leaf accent */
  /* Lighter moss direction */
  --bg: #102016;
  --card: #162a1d;
  --text: #f3f7f4;
  --muted: #d0ddd4;
  --accent: #97d8a3;
  --accent-peach: #f2b6a0;
  --border: rgba(243, 247, 244, 0.12);
  --radius-card: 40px;
  --radius-pill: 999px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Noto Sans",
    "Apple Color Emoji", "Segoe UI Emoji";
  line-height: 1.55;
  color: var(--text);
  background: var(--bg);
}

a {
  color: var(--accent);
}

.container {
  max-width: 980px;
  margin: 0 auto;
  padding: 20px;
}

.topnav {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.topnav a {
  text-decoration: none;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.02);
}

.topnav a:hover {
  border-color: rgba(151, 216, 163, 0.60);
}

h1 {
  margin: 0;
  font-size: 2.1rem;
  letter-spacing: 0.2px;
}

.subtitle {
  margin: 8px 0 0;
  color: var(--muted);
}

.card {
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px;
  margin: 16px 0;
  background: var(--card);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}

.callout {
  border-left: 4px solid rgba(151, 216, 163, 0.75);
  padding-left: 12px;
}

.meta {
  color: var(--muted);
  font-size: 0.95rem;
}

.facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
}

.facts > div {
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.02);
}

dt {
  font-weight: 700;
  color: var(--text);
}

dd {
  margin: 6px 0 0;
  color: var(--muted);
}

.tags {
  list-style: none;
  padding: 0;
  margin: 10px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tags li {
  border: 1px solid rgba(242, 182, 160, 0.95);
  border-radius: var(--radius-pill);
  padding: 6px 10px;
  font-size: 0.95rem;
  color: var(--muted);
  background: rgba(242, 182, 160, 0.06);
}

details {
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 10px 12px;
  margin: 10px 0;
  background: rgba(255, 255, 255, 0.02);
}

summary {
  cursor: pointer;
  font-weight: 650;
}

.footer {
  color: var(--muted);
  padding-bottom: 40px;
}