:root {
  --fg: #1a1a1a;
  --muted: #666;
  --bg: #fff;
  --rule: #e5e5e5;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fg: #e8e8e8;
    --muted: #999;
    --bg: #111;
    --rule: #333;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0 auto;
  padding: 4rem 1.5rem 6rem;
  max-width: 42rem;
  background: var(--bg);
  color: var(--fg);
  font-size: 16px;
  line-height: 1.65;
}

header { margin-bottom: 3rem; }

h1 {
  font-size: 1.6rem;
  line-height: 1.3;
  margin: 0 0 0.5rem;
  font-weight: 600;
}

.tagline {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  letter-spacing: 0.02em;
}

.round {
  margin: 0.5rem 0 0;
  font-size: 1.1rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.cta { margin: 1.5rem 0 0; }

.cta a {
  display: inline-block;
  padding: 0.7rem 1.4rem;
  border: 1px solid var(--fg);
  border-radius: 8px;
  font-size: 1.35rem;
  font-weight: 600;
  text-decoration: none;
}

.cta a:hover { background: var(--fg); color: var(--bg); }

h2 {
  font-size: 1rem;
  margin: 2.5rem 0 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

p { margin: 0 0 1rem; }

ul { margin: 0 0 1rem; padding-left: 1.3rem; }

li { margin-bottom: 0.45rem; }

li b { font-weight: 600; }

li span { color: var(--muted); }

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.85rem;
}

.models { list-style: none; padding-left: 0; }

.models code { color: var(--muted); }

hr {
  border: 0;
  border-top: 1px solid var(--rule);
  margin: 3rem 0;
}

a { color: inherit; }

.opening {
  margin: 0 0 1.75rem;
  padding: 0.9rem 1.1rem;
  border: 1px solid var(--rule);
  border-radius: 8px;
}

.opening h2 { margin-top: 0; }

.opening .content {
  white-space: normal;
  font-style: italic;
  font-size: 1.05rem;
}

.entry { margin: 0 0 1.75rem; }

.entry .meta,
.opening .meta {
  margin: 0 0 0.25rem;
  color: var(--muted);
  font-size: 0.85rem;
  letter-spacing: 0.02em;
}

.entry .model {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.8rem;
}

.entry time {
  font-variant-numeric: tabular-nums;
}

.entry.reasoning,
.entry.tool_call,
.entry.tool_output {
  margin-bottom: 1rem;
  padding-left: 0.9rem;
  border-left: 2px solid var(--rule);
}

.entry.reasoning .content,
.entry.tool_call .content,
.entry.tool_output .content {
  color: var(--muted);
  font-size: 0.9rem;
}

.entry.message {
  margin-bottom: 1.75rem;
  padding: 0.9rem 1.1rem;
  border: 1px solid var(--rule);
  border-radius: 8px;
}

.entry.pass {
  margin-bottom: 1rem;
  padding: 0.6rem 1.1rem;
  border: 1px dashed var(--rule);
  border-radius: 8px;
}

.entry.pass .content {
  color: var(--muted);
  font-style: italic;
}

.content {
  margin: 0;
  white-space: pre-wrap;
}

.pass {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 0.85rem;
  font-style: italic;
}

.back { margin-top: 2rem; }

.notice {
  margin-top: 2.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: 0.9rem;
}