:root {
  --cream: #F6EDDC;
  --paper: #FFFBF4;
  --navy: #2E3C3F;
  --navy-soft: #5C6B6A;
  --orange: #EB6F2E;
  --orange-tint: #F7DCC4;
  --border: rgba(46, 60, 63, 0.14);
  --shadow: rgba(46, 60, 63, 0.10);
}
:root[data-theme="dark"] {
  --cream: #1B2224;
  --paper: #222B2D;
  --navy: #F1E9DA;
  --navy-soft: #ADB8B4;
  --orange: #F0813C;
  --orange-tint: rgba(240, 129, 60, 0.16);
  --border: rgba(241, 233, 218, 0.14);
  --shadow: rgba(0, 0, 0, 0.35);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --cream: #1B2224;
    --paper: #222B2D;
    --navy: #F1E9DA;
    --navy-soft: #ADB8B4;
    --orange: #F0813C;
    --orange-tint: rgba(240, 129, 60, 0.16);
    --border: rgba(241, 233, 218, 0.14);
    --shadow: rgba(0, 0, 0, 0.35);
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--cream);
  color: var(--navy);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  max-width: 760px;
  margin: 0 auto;
  padding: 40px 24px 0;
}
.topbar a { display: block; }
.wordmark-badge {
  display: inline-flex;
  align-items: center;
  padding: 5px 12px;
  border-radius: 10px;
}
.wordmark-badge img { display: block; height: 26px; width: auto; }
.topnav { display: flex; gap: 20px; }
.topnav a {
  color: var(--navy-soft);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
}
.topnav a:hover, .topnav a:focus-visible { color: var(--orange); }

.sheet {
  max-width: 760px;
  margin: 20px auto 80px;
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: 0 20px 60px var(--shadow);
  padding: 48px clamp(20px, 5vw, 64px) 56px;
}

h1 {
  font-family: Georgia, "Times New Roman", serif;
  font-style: italic;
  font-weight: 700;
  font-size: clamp(28px, 4vw, 36px);
  line-height: 1.15;
  margin: 0 0 6px;
  text-wrap: balance;
  color: var(--navy);
}
.subtitle { color: var(--navy-soft); font-size: 15px; margin: 0 0 36px; max-width: 60ch; }

.toc {
  display: grid;
  gap: 6px;
  padding: 18px 20px;
  margin-bottom: 40px;
  background: var(--orange-tint);
  border-radius: 12px;
  border: 1px solid var(--border);
}
.toc-label {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--navy-soft);
  margin-bottom: 4px;
}
.toc a { color: var(--navy); text-decoration: none; font-size: 14.5px; display: flex; gap: 10px; }
.toc a:hover, .toc a:focus-visible { color: var(--orange); }
.toc a span { color: var(--orange); font-variant-numeric: tabular-nums; font-weight: 600; width: 1.4em; }

section { margin-top: 40px; scroll-margin-top: 24px; }
section:first-of-type { margin-top: 0; }

h2 {
  display: flex;
  align-items: baseline;
  gap: 12px;
  font-family: Georgia, "Times New Roman", serif;
  font-style: italic;
  font-size: 20px;
  color: var(--navy);
  margin: 0 0 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
h2 .num {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-style: normal;
  font-size: 14px;
  font-weight: 700;
  color: var(--orange);
}

p { margin: 0 0 14px; color: var(--navy-soft); max-width: 66ch; }
strong { color: var(--navy); font-weight: 600; }

ul, ol { margin: 0 0 14px; padding-left: 22px; color: var(--navy-soft); max-width: 62ch; }
li { margin-bottom: 8px; }
li::marker { color: var(--orange); }

.callout {
  background: var(--orange-tint);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 18px;
  margin: 0 0 14px;
  font-size: 14.5px;
  color: var(--navy);
}

.contact { color: var(--orange); font-weight: 600; text-decoration: none; }
.contact:hover, .contact:focus-visible { text-decoration: underline; }

footer.page-footer {
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--navy-soft);
}

@media (max-width: 480px) {
  .sheet { padding: 32px 18px 40px; border-radius: 0; margin: 0; border-left: none; border-right: none; }
  .topbar { padding: 28px 18px 0; flex-wrap: wrap; }
}