:root {
  --bg: #ffffff;
  --fg: #1c1c1c;
  --muted: #5a5a5a;
  --border: #e0e0e0;
  --code-bg: #f4f4f4;
  --code-fg: #1c1c1c;
  --link: #0552c9;
  --table-head: #f7f7f7;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16171a;
    --fg: #e4e4e4;
    --muted: #a0a0a0;
    --border: #33353a;
    --code-bg: #1e2024;
    --code-fg: #dcdcdc;
    --link: #6ba6ff;
    --table-head: #1e2024;
  }
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: light dark;
}

body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.55;
}

main {
  max-width: 760px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}

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

h1, h2 {
  line-height: 1.25;
}

h1 {
  font-size: 1.9rem;
  margin: 0 0 12px;
}

.deck {
  font-size: 1.08rem;
  color: var(--fg);
  margin: 0 0 10px;
}

.name-note {
  color: var(--muted);
  font-size: 0.95rem;
  margin: 0 0 40px;
}

section {
  margin: 40px 0;
}

section h2 {
  font-size: 1.1rem;
  margin: 0 0 14px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
}

p {
  margin: 0 0 14px;
}

ol, ul {
  margin: 0 0 14px;
  padding-left: 22px;
}

li {
  margin: 0 0 10px;
}

li:last-child {
  margin-bottom: 0;
}

figure {
  margin: 0;
}

figure img {
  width: 100%;
  height: auto;
  display: block;
  border: 1px solid var(--border);
  border-radius: 4px;
}

figcaption {
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 8px;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

th, td {
  text-align: left;
  padding: 8px 10px;
  border: 1px solid var(--border);
  vertical-align: top;
}

th {
  background: var(--table-head);
  font-weight: 600;
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.88em;
  background: var(--code-bg);
  color: var(--code-fg);
  padding: 0.1em 0.35em;
  border-radius: 3px;
}

pre {
  position: relative;
  background: var(--code-bg);
  color: var(--code-fg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 34px 16px 14px;
  overflow-x: auto;
  margin: 0 0 14px;
}

pre code {
  background: none;
  padding: 0;
  font-size: 0.85rem;
  line-height: 1.5;
}

.copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  font-family: inherit;
  font-size: 0.75rem;
  color: var(--muted);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 3px 8px;
  cursor: pointer;
}

.copy-btn:hover {
  color: var(--fg);
}

footer {
  color: var(--muted);
  font-size: 0.9rem;
  border-top: 1px solid var(--border);
  padding-top: 20px;
  margin-top: 48px;
}

footer p {
  margin: 0 0 6px;
}