/* Help guide layout, on top of styles.css */
.guide-page { max-width: 860px; }
.guide .hero-intro { margin-bottom: 20px; }
.guide .card { margin-bottom: 18px; }
.guide .topbar-actions .btn.ghost { text-decoration: none; display: inline-block; }
.toc h3 { margin-bottom: 8px; }
.toc ol { margin: 0; padding-left: 20px; columns: 2; column-gap: 32px; font-size: .95rem; }
.toc li { margin-bottom: 4px; break-inside: avoid; }
.toc a { color: var(--ink-2); text-decoration: none; }
.toc a:hover { color: var(--accent-ink); text-decoration: underline; }
@media (max-width: 600px) { .toc ol { columns: 1; } }

.prose h2 { font-size: 1.5rem; margin-bottom: 10px; scroll-margin-top: 20px; }
.prose h3 { font-size: 1.1rem; margin: 18px 0 6px; }
.prose p { margin: 0 0 12px; color: var(--ink-2); }
.prose ul { margin: 0 0 12px; padding-left: 20px; color: var(--ink-2); }
.prose li { margin-bottom: 6px; }
.prose strong { color: var(--ink); }
.prose dl { margin: 0 0 12px; }
.prose dt { font-weight: 700; margin-top: 12px; }
.prose dd { margin: 4px 0 0; color: var(--ink-2); }
.prose .glossary dt, .prose .faq dt { margin-top: 10px; }
.prose .faq dt { font-family: var(--font-ed); font-size: 1.05rem; }
.bench-inline, .stat-inline { display: block; font-size: .85rem; color: var(--muted); margin-top: 4px; }
.bench-inline a, .stat-inline a { color: var(--accent-ink); }
.bench-inline .q, .stat-inline .q, .src-list .q { font-style: italic; }

pre.formula { background: var(--bg); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; font-size: .85rem; line-height: 1.55; overflow-x: auto; color: var(--ink); }
table.example { width: 100%; border-collapse: collapse; font-size: .92rem; margin: 6px 0 14px; }
table.example th, table.example td { padding: 7px 10px; border-top: 1px solid var(--line); text-align: right; }
table.example th:first-child, table.example td:first-child { text-align: left; }
table.example thead th { border-top: 0; font-size: .75rem; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }
table.example tr.total td { font-weight: 700; background: var(--accent-soft); }

#bench-tables { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; align-items: start; }
@media (max-width: 640px) { #bench-tables { grid-template-columns: 1fr; } }
details.ind { border: 1px solid var(--line); border-radius: 12px; padding: 0 14px; margin: 0; min-width: 0; }
details.ind.open { grid-column: 1 / -1; }
details.ind summary { cursor: pointer; padding: 12px 0; font-weight: 700; display: flex; align-items: center; gap: 8px; list-style: none; text-align: left; }
details.ind summary::-webkit-details-marker { display: none; }
details.ind summary::before { content: "▸"; color: var(--accent-ink); flex: none; width: 12px; }
details.ind[open] summary::before { content: "▾"; }
details.ind .sum-name { flex: 1; min-width: 0; text-align: left; }
details.ind .sum-val { font-weight: 500; color: var(--muted); font-size: .9rem; white-space: nowrap; }
table.bench-table { width: 100%; border-collapse: collapse; font-size: .88rem; margin: 0 0 12px; }
table.bench-table th, table.bench-table td { padding: 7px 8px; border-top: 1px solid var(--line); text-align: left; vertical-align: top; }
table.bench-table thead th { border-top: 0; font-size: .72rem; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }
table.bench-table td:nth-child(2) { white-space: nowrap; font-weight: 600; }
table.bench-table .cat { display: block; font-weight: 400; color: var(--muted); font-size: .8rem; white-space: normal; }
table.bench-table tr.note td { color: var(--muted); font-size: .82rem; font-style: italic; }
table.bench-table a { color: var(--accent-ink); text-decoration: none; }
table.bench-table a:hover { text-decoration: underline; }
.topics-lead { font-weight: 600; color: var(--ink); margin: 8px 0 2px !important; }
details.ind .topics { margin-bottom: 8px; }
details.ind .topics-src { font-size: .78rem; color: var(--muted); margin: 6px 0 12px; }

.src-list { margin: 8px 0 0; padding-left: 22px; font-size: .88rem; columns: 2; column-gap: 32px; }
.src-list li { margin-bottom: 5px; break-inside: avoid; }
.src-list a { color: var(--accent-ink); text-decoration: none; }
.src-list a:hover { text-decoration: underline; }
.src-list .url { display: block; color: var(--muted); font-size: .75rem; }
@media (max-width: 700px) { .src-list { columns: 1; } }

@media print {
  .guide-page { max-width: none; }
  details.ind, details.ind[open] { break-inside: avoid; }
  details.ind:not([open]) > *:not(summary) { display: block; }
  .src-list, .toc ol { columns: 1; }
}

/* sticky top bar on the guide */
.guide .topbar { position: sticky; top: 0; z-index: 50; box-shadow: 0 6px 18px rgba(22,19,15,.18); }
.guide .prose h2 { scroll-margin-top: 84px; }