:root {
  --bg: #0f1419;
  --card: #1a222c;
  --text: #e7eef7;
  --muted: #9aabbd;
  --accent: #5eb1ff;
  --us: #3dd68c;
  --flash: #f0a35e;
  --border: #2a3644;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: "Segoe UI", system-ui, -apple-system, sans-serif;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 980px; margin: 0 auto; padding: 2rem 1.25rem 4rem; }
.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2.5rem;
  font-size: 0.95rem;
}
.nav .logo {
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  font-size: 0.85rem;
}
.nav-links { display: flex; flex-wrap: wrap; gap: 1rem; color: var(--muted); }
.nav-links a { color: var(--muted); }
.brand { color: var(--accent); letter-spacing: 0.04em; text-transform: uppercase; font-size: 0.8rem; margin: 0 0 0.25rem; }
h1 { font-size: 1.85rem; margin: 0 0 0.75rem; }
h2 { font-size: 1.2rem; margin: 0 0 0.75rem; }
.lede, .cta, .note, .readout, .fine { color: var(--muted); }
.cta { margin-top: 0.5rem; }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem 1.35rem;
  margin: 1.5rem 0;
}
.badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--bg);
  background: var(--accent);
  border-radius: 999px;
  padding: 0.15rem 0.55rem;
  margin-left: 0.35rem;
  vertical-align: middle;
}
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; margin: 1rem 0; font-size: 0.95rem; }
th, td { border-bottom: 1px solid var(--border); padding: 0.65rem 0.5rem; text-align: left; vertical-align: top; }
thead th { color: var(--muted); font-weight: 600; }
.sub { display: block; font-weight: 400; font-size: 0.8rem; color: var(--muted); }
.tag {
  display: inline-block;
  margin-left: 0.35rem;
  font-size: 0.75rem;
  color: var(--flash);
  border: 1px solid var(--flash);
  border-radius: 6px;
  padding: 0 0.35rem;
}
.ex {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.75rem 1rem;
  margin: 0.75rem 0;
  overflow: hidden;
  max-width: 100%;
}
.ex > summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}
.ex > summary::-webkit-details-marker { display: none; }
.ex-summary-row {
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
}
.ex-chevron {
  flex: 0 0 auto;
  width: 1.1rem;
  height: 1.1rem;
  margin-top: 0.15rem;
  border-radius: 4px;
  border: 1px solid var(--accent);
  background: #0b1015;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  line-height: 1;
  transition: transform 0.15s ease, background 0.15s ease;
}
.ex-chevron::before {
  content: "▶";
  display: block;
  transform: translateX(0.5px);
}
.ex[open] > summary .ex-chevron {
  background: rgba(94, 177, 255, 0.15);
  transform: rotate(90deg);
}
.ex-title { font-size: 0.98rem; flex: 1; min-width: 0; }
.ex-expand-hint {
  font-size: 0.78rem;
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.01em;
}
.ex[open] > summary .ex-expand-hint {
  visibility: hidden; /* keep layout; avoid “expand” when open */
  height: 0;
  margin: 0;
  overflow: hidden;
}
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  padding-left: 1.65rem; /* align under title, past chevron */
}
.chip {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  border-radius: 999px;
  padding: 0.2rem 0.55rem;
  border: 1px solid var(--border);
  color: var(--muted);
  background: #0b1015;
  white-space: nowrap;
}
.chip.us { border-color: var(--us); color: var(--us); }
.chip.flash { border-color: var(--flash); color: var(--flash); }
.prompt { color: var(--muted); font-size: 0.95rem; overflow-wrap: anywhere; }
.cols {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-top: 0.75rem;
  min-width: 0;
  max-width: 100%;
}
.col {
  min-width: 0;
  max-width: 100%;
}
.col h3 { margin: 0 0 0.5rem; font-size: 1rem; }
.col.us h3 { color: var(--us); }
.col.flash h3 { color: var(--flash); }
.col ul { margin: 0 0 0.75rem; padding-left: 1.1rem; color: var(--muted); font-size: 0.9rem; }
.trunc-note { color: var(--muted); font-size: 0.82rem; margin: 0.4rem 0 0.55rem; }
.flash-full {
  margin-top: 0.5rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.45rem 0.65rem;
  background: #0b1015;
}
.flash-full > summary {
  cursor: pointer;
  color: var(--flash);
  font-size: 0.88rem;
  font-weight: 600;
}
pre.code-block {
  margin: 0;
  padding: 0.75rem;
  background: #0b1015;
  border-radius: 8px;
  overflow-x: auto;
  overflow-y: auto;
  max-height: 320px;
  max-width: 100%;
  width: 100%;
  box-sizing: border-box;
  font-family: var(--mono);
  font-size: 0.78rem;
  line-height: 1.4;
  border: 1px solid var(--border);
  white-space: pre;
}
pre.code-block.preview { max-height: 160px; opacity: 0.95; }
pre.code-block code {
  display: block;
  font-family: var(--mono);
  font-size: inherit;
  white-space: pre;
}
code { font-family: var(--mono); font-size: 0.9em; }
a { color: var(--accent); }
footer { margin-top: 2rem; color: var(--muted); font-size: 0.85rem; }