:root {
  --bg: #fbf9f5; --fg: #22201c; --muted: #6b665d; --line: #e4dfd5; --accent: #7a4b1e;
  --quote-bg: #f3efe7; --card: #ffffff; --error: #9b2c2c;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #1b1a17; --fg: #ebe6dc; --muted: #a39d92; --line: #36332d; --accent: #e0a96a;
          --quote-bg: #26241f; --card: #22201c; --error: #f08080; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 17px/1.6 var(--sans); }
a { color: var(--accent); }
header.site { display: flex; flex-wrap: wrap; gap: 8px 24px; align-items: baseline; justify-content: space-between;
  padding: 14px 16px; border-bottom: 1px solid var(--line); max-width: 1100px; margin: 0 auto; }
.brand { font: 600 19px var(--serif); color: var(--fg); text-decoration: none; }
header nav { display: flex; gap: 18px; flex-wrap: wrap; }
header nav a { text-decoration: none; }
header nav a.quiet { color: var(--muted); }
main { padding: 0 16px 64px; }
.narrow { max-width: 720px; margin: 32px auto; }
.wide { max-width: 1100px; margin: 32px auto; }
h1, h2, h3 { font-family: var(--serif); line-height: 1.25; }
h1 { font-size: 30px; }
.lede { font-size: 19px; color: var(--muted); }
.small { font-size: 14px; color: var(--muted); }
.notice { background: var(--quote-bg); padding: 10px 14px; border-radius: 6px; }
.notice.error { color: var(--error); }
.button, button { font: inherit; background: var(--accent); color: var(--bg); border: 0; border-radius: 6px;
  padding: 9px 18px; cursor: pointer; text-decoration: none; display: inline-block; }
button:disabled { opacity: .5; cursor: default; }
button.link { background: none; color: var(--accent); padding: 0; text-decoration: underline; }
form.inline { display: inline; }
.actions { display: flex; gap: 18px; align-items: baseline; }
.actions form { margin: 0; }
.ask textarea { width: 100%; font: 17px/1.5 var(--sans); padding: 12px; border: 1px solid var(--line);
  border-radius: 8px; background: var(--card); color: var(--fg); resize: vertical; }
.ask-row { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-top: 10px; flex-wrap: wrap; }
.progress { margin-top: 24px; border: 1px solid var(--line); border-radius: 8px; padding: 14px 16px; background: var(--card); }
.progress-head { display: flex; align-items: center; gap: 10px; }
.progress-head .link { margin-left: auto; font-size: 14px; }
.spinner { width: 14px; height: 14px; border: 2px solid var(--line); border-top-color: var(--accent);
  border-radius: 50%; animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.steps { font-size: 14px; color: var(--muted); margin: 10px 0; padding-left: 20px; }
.thinking, .draft { white-space: pre-wrap; font-size: 14px; color: var(--muted); max-height: 220px; overflow: auto;
  background: var(--quote-bg); padding: 10px; border-radius: 6px; }
.draft { margin-top: 10px; }
.artifacts { padding-left: 20px; }
.artifacts li { margin: 6px 0; }
.answer { max-width: 720px; margin: 32px auto; font: 18px/1.65 var(--serif); }
.answer .meta, .answer .question { font-family: var(--sans); }
.answer h1 { font-size: 32px; }
.answer-body h2 { margin-top: 1.6em; }
figure.quote { margin: 1.4em 0; }
figure.quote blockquote { margin: 0; padding: 12px 18px; background: var(--quote-bg); border-left: 3px solid var(--accent); border-radius: 0 6px 6px 0; }
figure.quote blockquote p { margin: .4em 0; }
figure.quote figcaption { font: 14px/1.5 var(--sans); color: var(--muted); margin: 6px 0 0 18px; }
.inline-cite { font: 14px var(--sans); color: var(--muted); }
.licence-note { font-style: italic; }
.cite-error { color: var(--error); font: 14px var(--sans); }
.sources { margin-top: 2.5em; border-top: 1px solid var(--line); font: 15px/1.5 var(--sans); }
.sources h2 { font-size: 18px; }
.answer-foot { margin-top: 2.5em; border-top: 1px solid var(--line); padding-top: 12px; font-family: var(--sans); }
.answer-body table { border-collapse: collapse; font: 15px var(--sans); }
.answer-body td, .answer-body th { border: 1px solid var(--line); padding: 6px 8px; }
table.runs { width: 100%; border-collapse: collapse; font-size: 14px; }
table.runs td, table.runs th { border-bottom: 1px solid var(--line); padding: 6px; text-align: left; vertical-align: top; }
.login form.dev { margin-top: 24px; display: flex; gap: 8px; flex-wrap: wrap; align-items: end; }
.login input { font: inherit; padding: 6px; }
@media (max-width: 600px) { .wide { overflow-x: auto; } h1 { font-size: 25px; } }
.site-foot { max-width: 1100px; margin: 0 auto; padding: 16px; border-top: 1px solid var(--line); }
.prose li { margin: .4em 0; }