:root { --ink: #222; --bg: #fefcf8; --accent: #6b4e2e; --mute: #666; }
* { box-sizing: border-box; }
body { margin: 0; font: 16px/1.55 Georgia, serif; color: var(--ink); background: var(--bg); }
header { padding: 1rem 1.5rem; border-bottom: 1px solid #ddd; }
header a, header strong { color: var(--accent); text-decoration: none; font-weight: 700; }
main { max-width: 42rem; padding: 1.5rem; margin: 0 auto; }
h1, h2, h3 { font-family: Georgia, serif; }
pre { background: #f1ece2; padding: 0.75rem 1rem; overflow-x: auto; border-left: 3px solid var(--accent); }
code { font: 14px/1.5 "SF Mono", Menlo, monospace; }
pre code { font-size: 14px; }
button.run { margin: 0.25rem 0 0.5rem; padding: 0.3rem 0.8rem; background: var(--accent); color: #fff; border: 0; cursor: pointer; font: inherit; }
button.run:disabled { opacity: 0.6; cursor: wait; }
.playground-output { background: #222; color: #eee; border-left-color: #999; }
a { color: var(--accent); }
ul { padding-left: 1.25rem; }
li { margin-bottom: 0.25rem; }