:root {
  --bg: #EDEAE3;
  --bg-card: #F6F4EF;
  --text: #1B1A17;
  --text-muted: #5B564C;
  --accent: #C4501E;
  --accent-strong: #9C3C15;
  --border: #D2CBBB;
  --mono-bg: #1B1A17;
  --mono-text: #EDE8DF;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #14120F;
    --bg-card: #1E1B17;
    --text: #EDE8E0;
    --text-muted: #A79E92;
    --accent: #FF7A3D;
    --accent-strong: #FF9660;
    --border: #322E27;
    --mono-bg: #0D0C0A;
    --mono-text: #E9E4DA;
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: #14120F;
  --bg-card: #1E1B17;
  --text: #EDE8E0;
  --text-muted: #A79E92;
  --accent: #FF7A3D;
  --accent-strong: #FF9660;
  --border: #322E27;
  --mono-bg: #0D0C0A;
  --mono-text: #E9E4DA;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: "IBM Plex Sans", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; }

.back {
  display: inline-block;
  margin: 20px 24px 0;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--accent-strong);
  text-decoration: none;
}
.back:hover { text-decoration: underline; }

main {
  max-width: 760px;
  margin: 0 auto;
  padding: 24px 24px 96px;
}

#content h1, #content h2, #content h3, #content h4 {
  font-family: "Big Shoulders Display", "Arial Narrow", sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.01em;
  font-weight: 800;
  text-wrap: balance;
  margin: 1.7em 0 0.5em;
  color: var(--text);
}
#content h1 { font-size: 2.1rem; margin-top: 0.3em; }
#content h2 {
  font-size: 1.4rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 8px;
}
#content h3 { font-size: 1.1rem; }
#content h4 { font-size: 0.95rem; text-transform: none; letter-spacing: 0; }

#content p, #content li { color: var(--text); }
#content a { color: var(--accent-strong); }
#content hr { border: none; border-top: 1px solid var(--border); margin: 2em 0; }

#content code {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.88em;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 1px 5px;
}
#content pre {
  background: var(--mono-bg);
  color: var(--mono-text);
  padding: 16px 18px;
  border-radius: 6px;
  overflow-x: auto;
  font-size: 0.85rem;
  line-height: 1.6;
}
#content pre code {
  background: none;
  border: none;
  padding: 0;
  color: inherit;
  font-size: inherit;
}

.tbl-wrap, #content table { max-width: 100%; }
#content table {
  border-collapse: collapse;
  width: 100%;
  margin: 1.2em 0;
  font-size: 0.92rem;
  display: block;
  overflow-x: auto;
}
#content th, #content td {
  border: 1px solid var(--border);
  padding: 8px 12px;
  text-align: left;
  vertical-align: top;
}
#content th {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  background: var(--bg-card);
}

#content blockquote {
  border-left: 3px solid var(--accent);
  margin: 1.2em 0;
  padding: 2px 18px;
  color: var(--text-muted);
}
#content blockquote p { color: var(--text-muted); }

@media (max-width: 480px) {
  main { padding: 16px 16px 72px; }
  #content h1 { font-size: 1.7rem; }
}