/* Guide page: a normal scrolling document on top of the atlas tokens. */
html, body.guide { overflow: auto; height: auto; }
body.guide { background: var(--bg); line-height: 1.6; }

.guide-top {
  position: sticky; top: 0; z-index: 5;
  display: flex; justify-content: space-between; align-items: center;
  padding: 10px 24px; background: rgba(5, 7, 13, 0.92); backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--border); font-size: 13px;
}
.back { font-weight: 600; }

.guide-layout { display: grid; grid-template-columns: 210px minmax(0, 780px); gap: 40px; justify-content: center; padding: 24px 24px 80px; }
.toc { position: sticky; top: 64px; align-self: start; display: flex; flex-direction: column; gap: 2px; font-size: 13px; }
.toc-title { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 6px; }
.toc a { color: var(--text); text-decoration: none; padding: 2px 0; }
.toc a:hover { color: var(--accent); }
.toc a.sub { padding-left: 14px; color: var(--muted); }

.guide-main h1 { font-size: 32px; line-height: 1.2; margin: 8px 0 12px; }
.guide-main h2 { font-size: 22px; margin: 48px 0 10px; padding-top: 12px; border-top: 1px solid var(--border); }
.guide-main h3 { font-size: 16px; margin: 0 0 6px; }
.guide-main section, .type-card { scroll-margin-top: 64px; }
.lede { font-size: 16px; color: #c9cfdc; }
.guide-main p, .guide-main li { font-size: 15px; }
.guide-main ul { padding-left: 20px; }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.box { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 14px 16px; }
.box p { margin: 0; font-size: 14px; }
.schemes dl { margin: 6px 0 0; display: grid; grid-template-columns: 150px 1fr; gap: 6px 14px; font-size: 14px; }
.schemes dt { font-weight: 600; }
.schemes dd { margin: 0; }
.stat { background: #ffffff08; border-left: 3px solid var(--accent); padding: 8px 12px; border-radius: 0 6px 6px 0; font-size: 14px; }

.chart { margin: 12px 0 0; }
.chart svg { width: 100%; height: auto; display: block; }
.chart figcaption { font-size: 12px; margin-top: 6px; }
.chart .grid { stroke: var(--border); stroke-width: 1; }
.chart .axis { fill: var(--muted); font-size: 11px; }
.chart .row-label { fill: var(--text); font-size: 12px; }
.chart a:hover .row-label { fill: var(--accent); }
.chart .hit { fill: transparent; }
.chart .hit:hover { fill: #ffffff08; }
.chart .bound { fill: none; stroke: #8b93a7; stroke-width: 1; opacity: 0.7; }
.chart .bound.strong { stroke: #c9cfdc; stroke-width: 1.5; opacity: 1; }
.chart .curve-label { fill: #c9cfdc; font-size: 10.5px; paint-order: stroke; stroke: var(--bg); stroke-width: 3px; }

.type-card { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 18px 20px; margin: 16px 0; }
.type-card h3 { font-size: 18px; display: flex; align-items: center; gap: 4px; }
.type-card h3 .sw { width: 14px; height: 14px; }
.type-card .sub { color: var(--muted); font-size: 13px; margin: 0 0 8px; }
.card-stats { margin-top: 12px; border-top: 1px solid var(--border); padding-top: 12px; }
.stat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.stat-grid .k { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.05em; }
.stat-grid .v { font-size: 20px; font-weight: 600; font-variant-numeric: tabular-nums; }
.stat-grid .muted { font-size: 12px; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin: 10px 0 0; }
.chip-s { font-size: 12px; border: 1px solid var(--border); border-radius: 10px; padding: 1px 8px; color: var(--muted); }
.chip-s b { color: var(--text); }
.examples { font-size: 14px !important; margin: 10px 0 4px; }
.map-link { font-size: 13px; font-weight: 600; }

.orbit-table { width: 100%; border-collapse: collapse; margin-top: 16px; font-size: 13.5px; }
.orbit-table th { text-align: left; color: var(--muted); font-weight: 500; font-size: 12px; padding: 6px 8px; border-bottom: 1px solid var(--border); }
.orbit-table td { padding: 8px; border-bottom: 1px solid var(--border); vertical-align: top; }
.orbit-table td:first-child { white-space: nowrap; }
.orbit-table .rule { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12px; white-space: nowrap; }
.orbit-table .num { text-align: right; font-variant-numeric: tabular-nums; }
.refs li { font-size: 13.5px; margin-bottom: 4px; }

@media (max-width: 900px) {
  .guide-layout { grid-template-columns: minmax(0, 1fr); padding: 16px; }
  .toc { display: none; }
  .two-col, .stat-grid { grid-template-columns: 1fr; }
  .orbit-table .rule { white-space: normal; }
}