:root {
  --bg: #0f1115;
  --panel: #171a21;
  --text: #e8eaf0;
  --muted: #9aa3b2;
  --accent: #7c5cff;
  --border: #262b36;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f7fb;
    --panel: #ffffff;
    --text: #1b1f2a;
    --muted: #5b6475;
    --accent: #5b3df5;
    --border: #e2e5ee;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

header, main, footer {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 20px;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  padding-bottom: 24px;
}

.brand { font-weight: 700; font-size: 1.15rem; color: var(--text); text-decoration: none; }
nav a { color: var(--muted); text-decoration: none; margin-left: 16px; font-size: 0.95rem; }
nav a:hover { color: var(--text); }

h1 { font-size: 2.1rem; line-height: 1.2; margin: 32px 0 12px; }
h2 { font-size: 1.25rem; margin: 32px 0 8px; }
p, li { color: var(--text); }
.lead { color: var(--muted); font-size: 1.1rem; }
.updated { color: var(--muted); font-size: 0.9rem; }

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

.cards { display: grid; gap: 14px; margin: 28px 0; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 18px; }
.card h3 { margin: 0 0 6px; font-size: 1.05rem; }
.card p { margin: 0; color: var(--muted); font-size: 0.95rem; }

footer {
  margin-top: 56px;
  padding-top: 20px;
  padding-bottom: 40px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
}
footer a { color: var(--muted); }