/* Nullius site: monochrome, calm, system font, plain solid colours. */
:root {
  --fg: #1c1c1e;
  --bg: #ffffff;
  --muted: #6e6e73;
  --line: #e3e3e8;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Helvetica, Arial, sans-serif;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --fg: #ececee; --bg: #121212; --muted: #9a9a9f; --line: #2c2c2e; }
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--fg); font-family: var(--font); }
body { font-size: 17px; line-height: 1.5; -webkit-text-size-adjust: 100%; }
a { color: var(--fg); text-underline-offset: 3px; }
.page { max-width: 720px; margin: 0 auto; padding: 24px 16px 48px; }
.top { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; padding-bottom: 16px; border-bottom: 1px solid var(--line); }
.brand { font-weight: 600; font-size: 17px; text-decoration: none; }
.top .store { font-size: 15px; }
h1 { font-size: 28px; line-height: 1.2; font-weight: 600; margin: 28px 0 8px; letter-spacing: -0.01em; }
.motto { margin: 0 0 24px; color: var(--muted); font-style: italic; }
.summary { margin: 0 0 20px; color: var(--fg); }
.muted { color: var(--muted); }
.small { font-size: 14px; }
section + section { margin-top: 28px; }
h2 { font-size: 17px; font-weight: 600; margin: 0 0 6px; }
p { margin: 0 0 12px; }
.sim-frame { display: block; width: 100%; height: 420px; border: 0; background: var(--bg); }
.state { padding: 32px 0; color: var(--muted); }
.cta { display: inline-block; margin-top: 8px; padding: 10px 16px; border: 1px solid var(--fg); border-radius: 10px; text-decoration: none; font-size: 15px; }
.foot { margin-top: 40px; padding-top: 16px; border-top: 1px solid var(--line); font-size: 14px; color: var(--muted); }
.links { margin-top: 16px; }
.doc h2 { margin-top: 24px; }
.doc ul { padding-left: 20px; margin: 0 0 12px; }
.doc li { margin-bottom: 6px; }
.lang-split { margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--line); }
/* Shared chat (/c/{id}) */
.bubble { margin: 28px 0 16px auto; max-width: 85%; width: fit-content; padding: 10px 14px; border-radius: 18px; background: var(--line); white-space: pre-wrap; }
.answer { margin-bottom: 8px; }
.answer h2 { margin-top: 20px; }
.answer h3 { font-size: 16px; font-weight: 600; margin: 16px 0 6px; }
.answer ul, .answer ol { padding-left: 22px; margin: 0 0 12px; }
.answer li { margin-bottom: 6px; }
.answer pre { overflow-x: auto; padding: 12px; border: 1px solid var(--line); border-radius: 10px; font-size: 14px; }
.answer code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.92em; }
.answer .table { overflow-x: auto; margin: 0 0 12px; }
.answer table { border-collapse: collapse; font-size: 15px; }
.answer th, .answer td { border-bottom: 1px solid var(--line); padding: 6px 10px; text-align: left; }
.card { border: 1px solid var(--line); border-radius: 14px; padding: 12px 14px; margin: 0 0 12px; }
.card-kind { font-size: 13px; color: var(--muted); }
.card-title { font-weight: 600; margin-bottom: 4px; }
.chip { display: inline-block; font-size: 13px; color: var(--muted); border: 1px solid var(--line); border-radius: 8px; padding: 1px 7px; margin: 0 4px 4px 0; text-decoration: none; }
.sources { margin-top: 8px; }