:root {
  --bg: #f5f6fb;
  --surface: #ffffff;
  --text: #151830;
  --muted: #5a5f7d;
  --primary: #3d3fb8;
  --accent: #4a7a00;
  --line: #dfe2f0;
  --on-primary: #ffffff;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d0f1f;
    --surface: #151833;
    --text: #e3e4f7;
    --muted: #a4a8c8;
    --primary: #c6f432;
    --accent: #c6f432;
    --line: #2a2e52;
    --on-primary: #1c2600;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

main {
  max-width: 680px;
  margin: 0 auto;
  padding: 48px 16px 64px;
}

header { display: flex; align-items: center; gap: 16px; margin-bottom: 32px; }
header img { width: 64px; height: 64px; }
header h1 { margin: 0; font-size: 2rem; line-height: 1.1; }
header p { margin: 4px 0 0; color: var(--muted); }

h2 { margin: 40px 0 8px; font-size: 1.15rem; }
p, li { color: var(--text); }
.muted { color: var(--muted); }
a { color: var(--primary); }

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 20px 24px;
  margin: 16px 0;
}
.card p { margin: 0; }
.card strong { color: var(--accent); }

ul { padding-left: 1.2em; }
li { margin: 6px 0; }

footer {
  margin-top: 56px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
}

.button {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 999px;
  background: var(--primary);
  color: var(--on-primary);
  font-weight: 600;
  text-decoration: none;
}

ol { padding-left: 1.2em; }
code { overflow-wrap: anywhere; font-size: 0.85em; }