/* Shipr Brand Center chrome — consumes palette tokens from /brand.css
   via html[data-palette]. Never hardcode light-only boards here. */

body.bc {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font: 400 1rem/1.55 var(--sans);
  -webkit-font-smoothing: antialiased;
  --bc-radius: 1rem;
}

body.bc a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 0.18em; }
body.bc a:hover { filter: brightness(0.92); }

.bc-wrap {
  width: min(56rem, calc(100% - 3rem));
  margin: 0 auto;
  padding: 3.5rem 0 5rem;
  position: relative;
}
.bc-wrap::before {
  content: "";
  position: absolute;
  inset: 4rem auto auto -12%;
  width: min(34rem, 80vw);
  height: min(34rem, 80vw);
  border-radius: 50%;
  background: radial-gradient(circle, color-mix(in srgb, var(--accent) 14%, transparent), transparent 70%);
  pointer-events: none;
  z-index: 0;
}
.bc-wrap > * { position: relative; z-index: 1; }

.bc-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
  margin-bottom: 1.1rem;
}
.bc-top a.home {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: inherit;
}
.bc-top .mark {
  width: 2rem;
  height: 2rem;
  border-radius: 0.45rem;
  display: block;
  overflow: hidden;
  background: transparent;
  padding: 0;
  border: 0;
}
.bc-top .mark img {
  width: 100%;
  height: 100%;
  display: block;
}
.bc-top .label {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.bc-top-right {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  flex-wrap: wrap;
}
.bc-top .count {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--ink-soft);
}

.bc-palette {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
}
.bc-palette .plabel {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
  padding: 0 0.35rem 0 0.55rem;
}
.bc-palette button {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--ink-soft);
  font: 600 0.72rem/1 var(--sans);
  padding: 0.4rem 0.7rem;
  border-radius: 999px;
  cursor: pointer;
}
.bc-palette button:hover { color: var(--ink); }
.bc-palette button[aria-pressed="true"] {
  background: var(--ink);
  color: var(--bg);
}
.bc-palette .swatch {
  display: inline-block;
  width: 0.65rem;
  height: 0.65rem;
  border-radius: 50%;
  margin-right: 0.3rem;
  vertical-align: -0.05em;
  border: 1px solid var(--line);
}
.bc-palette .swatch.paper { background: #f0ebe4; }
.bc-palette .swatch.ink { background: #161210; }

.bc-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 2.4rem;
}
.bc-nav a {
  font-size: 0.75rem;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--raised);
  color: var(--ink-mid);
  text-decoration: none;
  transition: border-color .15s, color .15s, background .15s;
}
.bc-nav a:hover {
  color: var(--accent);
  border-color: color-mix(in srgb, var(--accent) 45%, var(--line));
}
.bc-nav a.on {
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
}

.bc-hero { margin-bottom: 2.2rem; }
.bc-hero h1 {
  font-size: clamp(2.6rem, 6.5vw, 3.75rem);
  line-height: 1.08;
  letter-spacing: -0.035em;
  margin: 0 0 0.9rem;
  font-weight: 700;
  color: var(--ink);
}
.bc-hero h1 .stop { color: var(--accent); }
.bc-hero .lede {
  margin: 0;
  max-width: 40rem;
  font-size: clamp(1.15rem, 2.4vw, 1.45rem);
  line-height: 1.45;
  font-weight: 500;
  color: var(--ink-mid);
}

.bc-quick {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin: 1.75rem 0 0.85rem;
  border-block: 1px solid var(--line);
}
@media (max-width: 720px) { .bc-quick { grid-template-columns: 1fr; } }
.bc-quick a {
  display: block;
  padding: 1rem 1.1rem;
  text-decoration: none;
  color: inherit;
  border-right: 1px solid var(--line);
}
.bc-quick a:last-child { border-right: none; }
@media (max-width: 720px) {
  .bc-quick a { border-right: none; border-bottom: 1px solid var(--line); }
  .bc-quick a:last-child { border-bottom: none; }
}
.bc-quick .k {
  display: block;
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--ink-soft);
  margin-bottom: 0.25rem;
}
.bc-quick .t {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--ink);
}
.bc-quick a:hover .t { color: var(--accent); }
.bc-note { margin: 0 0 2rem; font-size: 0.9rem; color: var(--ink-soft); }

.bc-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.1rem;
  margin-bottom: 2.5rem;
}
@media (max-width: 720px) { .bc-grid { grid-template-columns: 1fr; } }

.bc-card {
  display: flex;
  gap: 1.25rem;
  align-items: center;
  padding: 1.35rem 1.4rem;
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: var(--bc-radius);
  text-decoration: none;
  color: inherit;
  transition: border-color .18s, box-shadow .18s, transform .18s;
}
.bc-card:hover {
  border-color: color-mix(in srgb, var(--accent) 50%, var(--line));
  box-shadow: 0 10px 28px color-mix(in srgb, var(--ink) 8%, transparent);
  transform: translateY(-1px);
}
.bc-card h2 {
  margin: 0 0 0.3rem;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.bc-card:hover h2 { color: var(--accent); }
.bc-card p { margin: 0; font-size: 0.9rem; line-height: 1.45; color: var(--ink-soft); }
.bc-teaser {
  flex: none;
  width: 4rem;
  min-height: 3.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink);
}

.bc-panel {
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: var(--bc-radius);
  padding: 1.4rem 1.5rem;
}
.bc-panel h2 {
  margin: 0 0 0.5rem;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.bc-panel h2 .stop { color: var(--accent); }
.bc-panel > p { margin: 0 0 1rem; color: var(--ink-mid); font-size: 0.92rem; }
.bc-log { display: flex; flex-direction: column; gap: 0.65rem; }
.bc-log p { margin: 0; font-size: 0.9rem; color: var(--ink-mid); line-height: 1.45; }
.bc-log .when {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--ink-soft);
  margin-right: 0.35rem;
}

.bc-prose h1 {
  font-size: clamp(2.3rem, 5vw, 3.2rem);
  letter-spacing: -0.03em;
  margin: 0 0 0.7rem;
  font-weight: 700;
}
.bc-prose h1 .stop { color: var(--accent); }
.bc-prose > .lede {
  margin: 0 0 2rem;
  max-width: 40rem;
  font-size: clamp(1.1rem, 2.2vw, 1.35rem);
  line-height: 1.45;
  font-weight: 500;
  color: var(--ink-mid);
}
.bc-prose h2 {
  font-size: 1.45rem;
  margin: 2.2rem 0 0.85rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.bc-prose > p, .bc-prose li { color: var(--ink-mid); font-size: 0.98rem; line-height: 1.55; }
.bc-prose > p { margin: 0 0 0.9rem; max-width: 40rem; }
.bc-prose ul, .bc-prose ol { margin: 0 0 1rem; padding-left: 1.2rem; max-width: 40rem; }
.bc-prose li { margin: 0.4rem 0; }
.bc-prose strong { color: var(--ink); font-weight: 650; }
.bc-prose code {
  font-family: var(--mono);
  font-size: 0.84em;
  background: var(--surface);
  color: var(--ink);
  padding: 0.1rem 0.4rem;
  border-radius: 0.3rem;
}

.bc-mean {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.9rem;
  margin: 0 0 1.5rem;
}
@media (max-width: 720px) { .bc-mean { grid-template-columns: 1fr; } }
.bc-mean .cell {
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: 0.85rem;
  padding: 1.1rem 1.15rem;
}
.bc-mean .cell .name { font-weight: 700; color: var(--ink); margin-bottom: 0.25rem; }
.bc-mean .cell .name .is { font-weight: 500; color: var(--ink-soft); font-size: 0.9rem; }
.bc-mean .cell p { margin: 0; font-size: 0.9rem; color: var(--ink-mid); }

.bc-swatches {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(4.5rem, 1fr));
  gap: 0.55rem;
  margin: 0.5rem 0 0.75rem;
}
.bc-swatch {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  min-width: 0;
}
.bc-swatch i {
  display: block;
  width: 100%;
  height: 3rem;
  border-radius: 0.45rem;
  border: 1px solid color-mix(in srgb, var(--ink) 12%, transparent);
  background: var(--swatch, var(--surface));
}
.bc-swatch i.ring {
  box-shadow: 0 0 0 2px var(--bg), 0 0 0 4px color-mix(in srgb, var(--ink) 28%, transparent);
}
.bc-swatch span {
  font-family: var(--mono);
  font-size: 0.62rem;
  color: var(--ink-soft);
}
.bc-notes {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1.25rem;
  margin: 0 0 1.5rem;
  font-size: 0.8rem;
  color: var(--ink-soft);
}
.bc-notes code { font-family: var(--mono); font-size: 0.85em; color: var(--ink-mid); }

.bc-chiprow { display: flex; flex-wrap: wrap; gap: 0.45rem; margin: 0.75rem 0 1.25rem; }
.bc-chip {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.32rem 0.55rem;
  border-radius: 0.35rem;
}
.bc-chip.inflight { background: var(--ship-inflight); color: var(--ship-inflight-ink); }
.bc-chip.ok { background: var(--ship-ok); color: var(--ship-ok-ink); }
.bc-chip.blocked { background: var(--ship-blocked); color: var(--ship-blocked-ink); }
.bc-chip.failed { background: var(--ship-failed); color: var(--ship-failed-ink); }

.bc-a11y {
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: var(--bc-radius);
  padding: 1.2rem 1.3rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--ink-mid);
  line-height: 1.7;
  margin: 0 0 1.5rem;
}
.bc-a11y .ok { color: var(--ship-ok); font-weight: 700; }
.bc-a11y .bad { color: var(--ship-failed); font-weight: 700; }

.bc-surfaces {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.9rem;
  margin: 0.5rem 0 1.5rem;
}
@media (max-width: 720px) { .bc-surfaces { grid-template-columns: 1fr; } }
.bc-surfaces a {
  display: block;
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: var(--bc-radius);
  padding: 1.2rem 1.25rem;
  text-decoration: none;
  color: inherit;
  transition: border-color .15s, box-shadow .15s;
}
.bc-surfaces a:hover {
  border-color: color-mix(in srgb, var(--accent) 50%, var(--line));
  box-shadow: 0 8px 22px color-mix(in srgb, var(--ink) 7%, transparent);
}
.bc-surfaces .k {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--ink-soft);
  margin-bottom: 0.3rem;
}
.bc-surfaces .t {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--ink);
  margin-bottom: 0.25rem;
}
.bc-surfaces a:hover .t { color: var(--accent); }
.bc-surfaces .d { font-size: 0.9rem; color: var(--ink-soft); line-height: 1.4; }

.bc-specimen {
  margin: 1.25rem 0 1.5rem;
  padding: 1.4rem 1.5rem;
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: var(--bc-radius);
}
.bc-specimen .big {
  font-size: clamp(2.2rem, 5vw, 3.2rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.05;
  color: var(--ink);
  margin: 0 0 0.55rem;
}
.bc-specimen .mono {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--ink-soft);
}

.bc-foot {
  margin-top: 3rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem;
  font-size: 0.88rem;
  color: var(--ink-soft);
}
.bc-foot a { color: var(--accent); }
.bc-foot .mono { font-family: var(--mono); font-size: 0.72rem; }

@keyframes bc-in {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: none; }
}
.bc-hero, .bc-quick, .bc-grid, .bc-panel, .bc-prose {
  animation: bc-in 0.55s cubic-bezier(0.22, 1, 0.36, 1) both;
}
.bc-grid .bc-card:nth-child(n) { animation: bc-in 0.55s cubic-bezier(0.22, 1, 0.36, 1) both; }
@media (prefers-reduced-motion: reduce) {
  .bc-hero, .bc-quick, .bc-grid, .bc-panel, .bc-prose, .bc-card { animation: none; }
}

/* —— Page specimens (each standard shows itself) —— */
.bc-type-scale {
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: var(--bc-radius);
  padding: 1.5rem 1.6rem;
  margin: 0 0 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1.35rem;
}
.bc-type-row .meta {
  display: block;
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--ink-soft);
  margin-bottom: 0.35rem;
}
.bc-type-display {
  font-size: clamp(3rem, 8vw, 4.75rem);
  font-weight: 700;
  letter-spacing: -0.045em;
  line-height: 0.95;
  color: var(--ink);
  margin: 0;
}
.bc-type-display .stop { color: var(--accent); }
.bc-type-h1 {
  font-size: clamp(2.2rem, 5vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin: 0;
  color: var(--ink);
}
.bc-type-h2 {
  font-size: 1.45rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0;
  color: var(--ink);
}
.bc-type-body {
  margin: 0;
  max-width: 38rem;
  font-size: 1.05rem;
  font-weight: 500;
  line-height: 1.5;
  color: var(--ink-mid);
}
.bc-type-caption {
  margin: 0;
  font-size: 0.9rem;
  color: var(--ink-soft);
}
.bc-type-mono {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--ink-soft);
}
.bc-type-faces {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.9rem;
  margin: 0 0 1.75rem;
}
@media (max-width: 720px) { .bc-type-faces { grid-template-columns: 1fr; } }
.bc-type-face {
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: var(--bc-radius);
  padding: 1.25rem 1.3rem;
}
.bc-type-face .sample {
  font-size: 2.6rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1;
  margin: 0 0 0.55rem;
  color: var(--ink);
}
.bc-type-face .sample.mono {
  font-family: var(--mono);
  font-size: 1.6rem;
  font-weight: 600;
  letter-spacing: 0;
}
.bc-type-face .role {
  font-weight: 700;
  color: var(--ink);
  margin: 0 0 0.2rem;
}
.bc-type-face .role .stop { color: var(--accent); }
.bc-type-face p { margin: 0; font-size: 0.88rem; color: var(--ink-soft); line-height: 1.4; }

.bc-id-hero {
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: var(--bc-radius);
  padding: 2.5rem 1.75rem;
  margin: 0 0 1.75rem;
  text-align: center;
}
.bc-id-hero .word {
  font-size: clamp(4rem, 14vw, 7rem);
  font-weight: 700;
  letter-spacing: -0.045em;
  line-height: 0.9;
  color: var(--ink);
  margin: 0 0 0.75rem;
}
.bc-id-hero .eyebrow {
  font-family: var(--mono);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0;
}
.bc-id-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.9rem;
  margin: 0 0 1.75rem;
}
@media (max-width: 720px) { .bc-id-pair { grid-template-columns: 1fr; } }
.bc-id-tile {
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: var(--bc-radius);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  min-height: 9rem;
}
.bc-id-tile.on-ink { background: #161210; border-color: #332c26; }
.bc-id-tile .mark-lg {
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 0.65rem;
  display: grid;
  place-items: center;
  font-family: var(--mono);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.04em;
}
.bc-id-tile .mark-lg.light { background: var(--ink); color: var(--bg); }
.bc-id-tile.on-ink .mark-lg.light { background: #dcd5cb; color: #161210; }
.bc-id-tile .cap {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--ink-soft);
}
.bc-id-tile.on-ink .cap { color: #8b8179; }

.bc-voice-laws {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.9rem;
  margin: 0 0 1.75rem;
}
@media (max-width: 720px) { .bc-voice-laws { grid-template-columns: 1fr; } }
.bc-voice-laws .law {
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: 0.85rem;
  padding: 1.1rem 1.15rem;
}
.bc-voice-laws .law h3 {
  margin: 0 0 0.3rem;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--ink);
}
.bc-voice-laws .law h3 .stop { color: var(--accent); }
.bc-voice-laws .law p { margin: 0; font-size: 0.9rem; color: var(--ink-mid); line-height: 1.45; }

.bc-rewrite {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.9rem;
  margin: 0 0 0.9rem;
}
@media (max-width: 720px) { .bc-rewrite { grid-template-columns: 1fr; } }
.bc-rewrite .bad, .bc-rewrite .good {
  border-radius: 0.85rem;
  padding: 1.15rem 1.2rem;
  border: 2px solid;
}
.bc-rewrite .bad {
  border-color: color-mix(in srgb, var(--ship-failed) 45%, var(--line));
  background: var(--raised);
}
.bc-rewrite .good {
  border-color: color-mix(in srgb, var(--ship-ok) 45%, var(--line));
  background: var(--raised);
}
.bc-rewrite .tag {
  font-family: var(--mono);
  font-size: 0.68rem;
  margin: 0 0 0.45rem;
}
.bc-rewrite .bad .tag { color: var(--ship-failed); }
.bc-rewrite .good .tag { color: var(--ship-ok); }
.bc-rewrite p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.45;
  color: var(--ink-mid);
}
.bc-rewrite .bad p { font-style: italic; }

.bc-comp-stage {
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: var(--bc-radius);
  padding: 1.25rem;
  margin: 0 0 1.5rem;
}
.bc-comp-row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 0.75rem;
  align-items: center;
  padding: 0.75rem 0.85rem;
  border-radius: 0.45rem;
  border: 1px solid transparent;
  border-left: 3px solid transparent;
  cursor: default;
}
.bc-comp-row + .bc-comp-row { margin-top: 0.35rem; }
.bc-comp-row.sel {
  background: color-mix(in srgb, var(--accent) 12%, var(--surface));
  border-color: var(--line);
  border-left-color: var(--accent);
}
.bc-comp-row .title { font-weight: 700; font-size: 0.92rem; color: var(--ink); }
.bc-comp-row .sub { font-size: 0.78rem; color: var(--ink-soft); margin-top: 0.12rem; }
.bc-comp-row .when { font-family: var(--mono); font-size: 0.68rem; color: var(--ink-soft); }
.bc-comp-actions { display: flex; flex-wrap: wrap; gap: 0.45rem; margin-top: 1rem; }
.bc-btn {
  appearance: none;
  font: 600 0.8rem/1 var(--sans);
  padding: 0.55rem 0.85rem;
  border-radius: 0.4rem;
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--ink);
  cursor: pointer;
}
.bc-btn.primary {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
}
.bc-filters { display: flex; flex-wrap: wrap; gap: 0.35rem; margin-bottom: 0.85rem; }
.bc-filters button {
  appearance: none;
  font-family: var(--mono);
  font-size: 0.65rem;
  padding: 0.28rem 0.55rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--ink-soft);
  cursor: pointer;
}
.bc-filters button.on {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
}
.bc-dock-demo {
  display: inline-flex;
  align-items: flex-end;
  gap: 0.55rem;
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  margin-top: 0.75rem;
}
.bc-dock-demo .app {
  position: relative;
  width: 48px;
  height: 48px;
  border-radius: 11px;
  background: var(--accent);
  color: var(--accent-ink);
  display: grid;
  place-items: center;
  font-family: var(--mono);
  font-size: 0.58rem;
  font-weight: 700;
}
.bc-dock-demo .app .badge {
  position: absolute;
  top: -6px;
  right: -6px;
  min-width: 1.2rem;
  height: 1.2rem;
  padding: 0 0.28rem;
  border-radius: 999px;
  background: var(--badge-count-bg);
  color: var(--badge-count-ink);
  border: 2px solid var(--bg);
  font-size: 0.62rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}
.bc-dock-demo .ghost {
  width: 48px;
  height: 48px;
  border-radius: 11px;
  background: var(--surface);
  color: var(--ink-soft);
  display: grid;
  place-items: center;
  font-family: var(--mono);
  font-size: 0.55rem;
}

/* —— Components kit —— */
.bc-kit { display: flex; flex-direction: column; gap: 1.35rem; margin: 0 0 1.75rem; }
.bc-kit-block {
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: var(--bc-radius);
  padding: 1.15rem 1.25rem 1.25rem;
}
.bc-kit-block > .lab {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  margin: 0 0 0.85rem;
}
.bc-kit-block > .lab h2 {
  margin: 0;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
  font-family: var(--mono);
}
.bc-kit-block > .lab .hint {
  font-size: 0.72rem;
  color: var(--ink-soft);
  font-family: var(--mono);
}
.bc-kit-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.55rem;
}
.bc-kit-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.85rem;
}
@media (max-width: 720px) { .bc-kit-grid { grid-template-columns: 1fr; } }
.bc-kit-field { display: flex; flex-direction: column; gap: 0.35rem; min-width: 0; }
.bc-kit-field .fname {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.bc-btn.ghost {
  background: transparent;
  color: var(--ink-mid);
}
.bc-btn.danger {
  background: var(--ship-failed);
  color: var(--ship-failed-ink);
  border-color: var(--ship-failed);
}
.bc-btn:disabled,
.bc-btn[aria-disabled="true"] {
  opacity: 0.45;
  cursor: not-allowed;
}
.bc-btn.sm {
  font-size: 0.72rem;
  padding: 0.4rem 0.65rem;
}

.bc-seg {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0;
  padding: 0.18rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--bg);
}
.bc-seg button {
  appearance: none;
  font-family: var(--mono);
  font-size: 0.65rem;
  padding: 0.35rem 0.7rem;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--ink-soft);
  cursor: pointer;
}
.bc-seg button.on {
  background: var(--accent);
  color: var(--accent-ink);
}

.bc-select {
  appearance: none;
  width: 100%;
  font: 500 0.88rem/1.2 var(--sans);
  color: var(--ink);
  background:
    linear-gradient(45deg, transparent 50%, var(--ink-soft) 50%) right 0.85rem top 1.05rem / 5px 5px no-repeat,
    linear-gradient(135deg, var(--ink-soft) 50%, transparent 50%) right 0.55rem top 1.05rem / 5px 5px no-repeat,
    var(--bg);
  border: 1px solid var(--line);
  border-radius: 0.45rem;
  padding: 0.65rem 2rem 0.65rem 0.8rem;
  cursor: pointer;
}
.bc-select:focus {
  outline: 2px solid color-mix(in srgb, var(--accent) 55%, transparent);
  outline-offset: 1px;
}

.bc-chooser {
  position: relative;
}
.bc-chooser-btn {
  appearance: none;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
  text-align: left;
  font: 500 0.88rem/1.2 var(--sans);
  color: var(--ink);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 0.45rem;
  padding: 0.65rem 0.8rem;
  cursor: pointer;
}
.bc-chooser-btn .val { font-weight: 700; }
.bc-chooser-btn .chev {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--ink-soft);
}
.bc-chooser-menu {
  display: none;
  position: absolute;
  z-index: 5;
  left: 0;
  right: 0;
  top: calc(100% + 0.3rem);
  margin: 0;
  padding: 0.35rem;
  list-style: none;
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  box-shadow: 0 10px 28px color-mix(in srgb, var(--ink) 12%, transparent);
}
.bc-chooser.open .bc-chooser-menu { display: block; }
.bc-chooser-menu button {
  appearance: none;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  text-align: left;
  font: 500 0.85rem/1.2 var(--sans);
  padding: 0.55rem 0.65rem;
  border: 0;
  border-radius: 0.35rem;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
}
.bc-chooser-menu button:hover,
.bc-chooser-menu button.on {
  background: color-mix(in srgb, var(--accent) 14%, var(--surface));
}
.bc-chooser-menu .meta {
  font-family: var(--mono);
  font-size: 0.62rem;
  color: var(--ink-soft);
}

.bc-input {
  width: 100%;
  font: 500 0.88rem/1.2 var(--sans);
  color: var(--ink);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 0.45rem;
  padding: 0.65rem 0.8rem;
}
.bc-input::placeholder { color: var(--ink-soft); }
.bc-input:focus {
  outline: 2px solid color-mix(in srgb, var(--accent) 55%, transparent);
  outline-offset: 1px;
}

.bc-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.85rem;
  color: var(--ink-mid);
  cursor: pointer;
  user-select: none;
}
.bc-toggle input {
  appearance: none;
  width: 2.2rem;
  height: 1.25rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--bg);
  position: relative;
  cursor: pointer;
  flex: none;
}
.bc-toggle input::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 0.85rem;
  height: 0.85rem;
  border-radius: 999px;
  background: var(--ink-soft);
  transition: transform 0.15s ease, background 0.15s ease;
}
.bc-toggle input:checked {
  background: var(--accent);
  border-color: var(--accent);
}
.bc-toggle input:checked::after {
  transform: translateX(0.9rem);
  background: var(--accent-ink);
}

.bc-strip {
  display: flex;
  flex-wrap: nowrap;
  gap: 0.35rem;
  overflow-x: auto;
  padding-bottom: 0.15rem;
}
.bc-strip button {
  appearance: none;
  flex: none;
  font-family: var(--mono);
  font-size: 0.65rem;
  padding: 0.35rem 0.65rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--ink-soft);
  cursor: pointer;
  white-space: nowrap;
}
.bc-strip button.on {
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
}

.bc-tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.25rem;
  border: 1px solid var(--line);
  border-radius: 0.7rem;
  padding: 0.3rem;
  background: var(--bg);
}
.bc-tabs button {
  appearance: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.2rem;
  padding: 0.45rem 0.35rem;
  border: 0;
  border-radius: 0.5rem;
  background: transparent;
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 0.58rem;
  cursor: pointer;
}
.bc-tabs button.on {
  background: var(--surface);
  color: var(--ink);
}
.bc-tabs svg {
  width: 1rem;
  height: 1rem;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.bc-kv {
  display: grid;
  gap: 0.45rem;
}
.bc-kv .row {
  display: grid;
  grid-template-columns: 7.5rem 1fr;
  gap: 0.75rem;
  align-items: baseline;
  font-size: 0.85rem;
}
.bc-kv .k {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.bc-kv .v { color: var(--ink); word-break: break-word; }
.bc-kv .v.mono { font-family: var(--mono); font-size: 0.78rem; color: var(--ink-mid); }

.bc-state {
  border: 1px dashed var(--line);
  border-radius: 0.55rem;
  padding: 1.1rem 1rem;
  text-align: center;
  background: var(--bg);
}
.bc-state .title {
  margin: 0 0 0.25rem;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--ink);
}
.bc-state .body {
  margin: 0;
  font-size: 0.82rem;
  color: var(--ink-soft);
  line-height: 1.4;
}
.bc-state.loading .pulse {
  width: 1.1rem;
  height: 1.1rem;
  margin: 0 auto 0.55rem;
  border-radius: 999px;
  border: 2px solid var(--line);
  border-top-color: var(--accent);
  animation: bc-spin 0.7s linear infinite;
}
@keyframes bc-spin { to { transform: rotate(360deg); } }
.bc-state.error .title { color: var(--ship-failed); }

.bc-comp-row[hidden] { display: none !important; }
.bc-comp-stage .bc-kit-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.85rem;
}

.bc-asset-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.9rem;
  margin: 0 0 1.5rem;
}
@media (max-width: 720px) { .bc-asset-grid { grid-template-columns: 1fr; } }
.bc-asset {
  display: flex;
  gap: 1rem;
  align-items: center;
  padding: 1.15rem 1.2rem;
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: var(--bc-radius);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.12s ease, box-shadow 0.12s ease;
}
.bc-asset:hover { border-color: var(--accent); }
.bc-asset.on {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent) 35%, transparent);
}
.bc-asset .preview {
  flex: none;
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 0.55rem;
  border: 1px solid var(--line);
  background: var(--bg);
  display: grid;
  place-items: center;
  overflow: hidden;
  font-family: var(--mono);
  font-size: 0.62rem;
  color: var(--ink-soft);
}
.bc-asset .preview img { width: 100%; height: 100%; object-fit: cover; }
.bc-asset .name { font-weight: 700; color: var(--ink); margin: 0 0 0.15rem; }
.bc-asset .desc { margin: 0; font-size: 0.82rem; color: var(--ink-soft); }
.bc-asset .path {
  margin: 0.2rem 0 0;
  font-family: var(--mono);
  font-size: 0.62rem;
  color: var(--accent);
}

/* —— Assets loop —— */
.bc-loop {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.45rem;
  margin: 0 0 1.5rem;
}
@media (max-width: 900px) { .bc-loop { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .bc-loop { grid-template-columns: 1fr; } }
.bc-loop-step {
  appearance: none;
  text-align: left;
  font: inherit;
  color: inherit;
  cursor: pointer;
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: var(--bc-radius);
  padding: 0.95rem 0.9rem;
  position: relative;
}
.bc-loop-step:hover { border-color: var(--accent); }
.bc-loop-step.on {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 10%, var(--raised));
}
.bc-loop-step .n {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  display: block;
  margin-bottom: 0.35rem;
}
.bc-loop-step .t {
  display: block;
  font-weight: 700;
  font-size: 0.98rem;
  color: var(--ink);
  margin-bottom: 0.25rem;
}
.bc-loop-step .d {
  margin: 0;
  font-size: 0.78rem;
  line-height: 1.35;
  color: var(--ink-soft);
}
.bc-loop-arrow {
  display: none;
}

.bc-proof {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 0.9rem;
  margin: 0 0 1.5rem;
}
@media (max-width: 720px) { .bc-proof { grid-template-columns: 1fr; } }
.bc-proof-card {
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: var(--bc-radius);
  padding: 1.15rem 1.2rem;
}
.bc-proof-card .lab {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin: 0 0 0.75rem;
}
.bc-proof-face {
  font-size: clamp(2.4rem, 6vw, 3.6rem);
  font-weight: 700;
  letter-spacing: -0.045em;
  line-height: 0.95;
  color: var(--ink);
  margin: 0 0 0.55rem;
}
.bc-proof-face .stop { color: var(--accent); }
.bc-proof-meta {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--ink-soft);
  line-height: 1.45;
}
.bc-proof-swatches {
  display: flex;
  gap: 0.35rem;
  margin: 0.85rem 0 0.55rem;
}
.bc-proof-swatches i {
  display: block;
  width: 1.55rem;
  height: 1.55rem;
  border-radius: 0.35rem;
  border: 1px solid var(--line);
}
.bc-proof-mark {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}
.bc-proof-mark img {
  width: 4rem;
  height: 4rem;
  border-radius: 0.55rem;
  border: 1px solid var(--line);
  background: var(--bg);
}
.bc-proof-og {
  width: 100%;
  border-radius: 0.45rem;
  border: 1px solid var(--line);
  display: block;
  margin-top: 0.35rem;
}
.bc-wire {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 0.55rem;
  padding: 0.95rem 1rem;
  margin: 0 0 1.5rem;
  overflow-x: auto;
}
.bc-wire pre {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.72rem;
  line-height: 1.55;
  color: var(--ink-mid);
  white-space: pre;
}
.bc-wire .c { color: var(--ink-soft); }
.bc-wire .k { color: var(--accent); }
.bc-copy-sys {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.55rem;
  margin: 0 0 1.25rem;
}
@media (max-width: 720px) { .bc-copy-sys { grid-template-columns: 1fr; } }
.bc-copy-sys a {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  align-items: baseline;
  padding: 0.75rem 0.9rem;
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: 0.45rem;
  text-decoration: none;
  color: inherit;
}
.bc-copy-sys a:hover { border-color: var(--accent); }
.bc-copy-sys .p {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--accent);
}
.bc-copy-sys .w {
  font-size: 0.82rem;
  color: var(--ink-soft);
  text-align: right;
}
.bc-loop-status {
  margin: -0.5rem 0 1.25rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--ink-soft);
}

/* —— UI standard —— */
.bc-ui-pick {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.55rem;
  margin: 0 0 1rem;
}
@media (max-width: 820px) { .bc-ui-pick { grid-template-columns: 1fr 1fr; } }
.bc-ui-pick button {
  appearance: none;
  text-align: left;
  font: inherit;
  color: inherit;
  cursor: pointer;
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: var(--bc-radius);
  padding: 0.9rem 0.95rem;
}
.bc-ui-pick button:hover { border-color: var(--accent); }
.bc-ui-pick button.on {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 10%, var(--raised));
}
.bc-ui-pick .k {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ink-soft);
  display: block;
  margin-bottom: 0.25rem;
}
.bc-ui-pick .t {
  display: block;
  font-weight: 700;
  font-size: 1.02rem;
  color: var(--ink);
  margin-bottom: 0.2rem;
}
.bc-ui-pick .d {
  margin: 0;
  font-size: 0.78rem;
  color: var(--ink-soft);
  line-height: 1.35;
}
.bc-ui-stage {
  background: color-mix(in srgb, var(--surface) 70%, var(--bg));
  border: 1px solid var(--line);
  border-radius: var(--bc-radius);
  padding: 1.25rem 1.1rem 1.35rem;
  margin: 0 0 1.5rem;
  min-height: 34rem;
}
.bc-ui-stage-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.55rem;
  margin: 0 0 1rem;
}
.bc-ui-stage-head .lesson {
  margin: 0;
  font-size: 0.88rem;
  color: var(--ink-mid);
  max-width: 36rem;
  line-height: 1.4;
}
.bc-ui-stage-head .open {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--accent);
  text-decoration: none;
}
.bc-ui-stage-head .open:hover { text-decoration: underline; }
.bc-ui-pane { display: none; }
.bc-ui-pane.on { display: block; }

.bc-geom {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  margin: 0 0 1.5rem;
}
@media (max-width: 720px) { .bc-geom { grid-template-columns: 1fr; } }
.bc-geom-card {
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: var(--bc-radius);
  padding: 1rem 1.05rem;
}
.bc-geom-card .lab {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin: 0 0 0.55rem;
}
.bc-geom-bar {
  height: 0.7rem;
  border-radius: 999px;
  background: var(--bg);
  border: 1px solid var(--line);
  overflow: hidden;
  margin: 0 0 0.55rem;
}
.bc-geom-bar > i {
  display: block;
  height: 100%;
  background: var(--accent);
}
.bc-geom-card .val {
  font-family: var(--mono);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--ink);
  margin: 0 0 0.2rem;
}
.bc-geom-card .note {
  margin: 0;
  font-size: 0.8rem;
  color: var(--ink-soft);
  line-height: 1.35;
}

.bc-ui-laws {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.65rem;
  margin: 0 0 1.5rem;
}
@media (max-width: 720px) { .bc-ui-laws { grid-template-columns: 1fr; } }
.bc-ui-laws .law {
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: var(--bc-radius);
  padding: 0.95rem 1rem;
}
.bc-ui-laws .law h3 {
  margin: 0 0 0.3rem;
  font-size: 0.98rem;
  letter-spacing: -0.015em;
}
.bc-ui-laws .law h3 .stop { color: var(--accent); }
.bc-ui-laws .law p {
  margin: 0;
  font-size: 0.86rem;
  color: var(--ink-mid);
  line-height: 1.4;
}

/* Device shells (live specimens on /brand/ui) */
.bc-dev-chrome {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(220px, 360px);
  border: 1px solid var(--line);
  border-radius: 0.55rem;
  overflow: hidden;
  background: var(--surface);
  min-height: 28rem;
  box-shadow: 0 16px 40px color-mix(in srgb, var(--ink) 10%, transparent);
}
@media (max-width: 820px) { .bc-dev-chrome { grid-template-columns: 1fr; } }
.bc-dev-chrome .host {
  display: flex;
  flex-direction: column;
  min-width: 0;
  background: var(--bg);
  border-right: 1px solid var(--line);
}
.bc-dev-chrome .bbar {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.5rem 0.7rem;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}
.bc-dev-chrome .dots { display: flex; gap: 5px; }
.bc-dev-chrome .dots i {
  width: 8px; height: 8px; border-radius: 50%; background: var(--line); display: block;
}
.bc-dev-chrome .url {
  flex: 1;
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--ink-soft);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 0.3rem;
  padding: 0.25rem 0.5rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.bc-dev-chrome .gh {
  padding: 0.75rem 0.9rem;
  border-bottom: 1px solid var(--line);
  font-size: 0.82rem;
}
.bc-dev-chrome .gh .repo { font-weight: 700; }
.bc-dev-chrome .gh .repo span { color: var(--ink-soft); font-weight: 500; }
.bc-dev-chrome .runs { padding: 0.55rem; display: flex; flex-direction: column; gap: 0.3rem; }
.bc-dev-chrome .run {
  appearance: none;
  text-align: left;
  font: inherit;
  color: inherit;
  cursor: pointer;
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: 0.35rem;
  padding: 0.55rem 0.65rem;
}
.bc-dev-chrome .run.sel { border-color: var(--accent); }
.bc-dev-chrome .run .n { font-weight: 600; font-size: 0.82rem; }
.bc-dev-chrome .run .m { font-size: 0.7rem; color: var(--ink-soft); margin-top: 0.1rem; }
.bc-dev-chrome .panel {
  display: flex;
  flex-direction: column;
  min-width: 0;
  background: var(--bg);
}
.bc-dev-chrome .phead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.65rem 0.75rem;
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}
.bc-dev-chrome .phead .mark {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--accent);
}
.bc-dev-chrome .pctx {
  font-family: var(--mono);
  font-size: 0.62rem;
  color: var(--ink-soft);
  padding: 0.45rem 0.75rem;
  border-bottom: 1px solid var(--line);
}
.bc-dev-chrome .plist { flex: 1; overflow: auto; }
.bc-dev-chrome .pfoot {
  padding: 0.65rem 0.75rem;
  border-top: 1px solid var(--line);
  font-size: 0.78rem;
  color: var(--ink-mid);
}

.bc-dev-phone {
  width: min(100%, 320px);
  margin: 0 auto;
  border: 1px solid var(--line);
  border-radius: 1.5rem;
  overflow: hidden;
  background: var(--bg);
  box-shadow: 0 18px 48px color-mix(in srgb, var(--ink) 12%, transparent);
  min-height: 28rem;
  display: flex;
  flex-direction: column;
}
.bc-dev-phone .notch {
  display: flex;
  justify-content: center;
  padding: 0.45rem 0 0.2rem;
  background: var(--surface);
}
.bc-dev-phone .notch i {
  width: 5.5rem;
  height: 0.55rem;
  border-radius: 999px;
  background: var(--ink);
  opacity: 0.35;
  display: block;
}
.bc-dev-phone .abar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.55rem 0.85rem;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}
.bc-dev-phone .abar .mark {
  font-weight: 700;
  letter-spacing: -0.02em;
}
.bc-dev-phone .strip {
  display: flex;
  gap: 0.3rem;
  padding: 0.55rem 0.65rem;
  overflow-x: auto;
  border-bottom: 1px solid var(--line);
}
.bc-dev-phone .strip button {
  appearance: none;
  flex: none;
  font-family: var(--mono);
  font-size: 0.6rem;
  padding: 0.3rem 0.55rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--ink-soft);
  cursor: pointer;
}
.bc-dev-phone .strip button.on {
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
}
.bc-dev-phone .list { flex: 1; overflow: auto; }
.bc-dev-phone .tabbar {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  background: var(--surface);
}
.bc-dev-phone .tabbar button {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 0.55rem;
  padding: 0.55rem 0.25rem;
  cursor: pointer;
}
.bc-dev-phone .tabbar button.on { color: var(--ink); font-weight: 700; }

.bc-dev-mac { max-width: 720px; margin: 0 auto; }
.bc-dev-mac .win {
  border: 1px solid var(--line);
  border-radius: 0.65rem;
  overflow: hidden;
  background: var(--bg);
  box-shadow: 0 18px 48px color-mix(in srgb, var(--ink) 12%, transparent);
  min-height: 22rem;
}
.bc-dev-mac .mchrome {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.55rem 0.75rem;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}
.bc-dev-mac .mchrome .dot {
  width: 9px; height: 9px; border-radius: 50%; background: var(--line);
}
.bc-dev-mac .mchrome .ttl {
  margin-left: 0.45rem;
  font-size: 0.75rem;
  color: var(--ink-soft);
}
.bc-dev-mac .mbody {
  display: grid;
  grid-template-columns: 9.5rem 1fr;
  min-height: 20rem;
}
.bc-dev-mac .side {
  border-right: 1px solid var(--line);
  background: var(--surface);
  padding: 0.45rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.bc-dev-mac .side button {
  appearance: none;
  text-align: left;
  font: inherit;
  font-size: 0.78rem;
  color: var(--ink-mid);
  background: transparent;
  border: 0;
  border-radius: 0.35rem;
  padding: 0.45rem 0.55rem;
  cursor: pointer;
}
.bc-dev-mac .side button.on {
  background: color-mix(in srgb, var(--accent) 14%, var(--bg));
  color: var(--ink);
  font-weight: 600;
}
.bc-dev-mac .main { display: flex; flex-direction: column; min-width: 0; }
.bc-dev-mac .toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.55rem 0.75rem;
  border-bottom: 1px solid var(--line);
  font-size: 0.82rem;
}
.bc-dev-mac .toolbar .mark { font-weight: 700; }
.bc-dev-mac .dock {
  display: inline-flex;
  gap: 0.55rem;
  align-items: flex-end;
  margin: 0.9rem auto 0;
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: color-mix(in srgb, var(--surface) 88%, transparent);
}
.bc-dev-mac .dock .ghost,
.bc-dev-mac .dock .app {
  width: 44px; height: 44px; border-radius: 10px;
  display: grid; place-items: center;
  font-family: var(--mono); font-size: 0.55rem;
}
.bc-dev-mac .dock .ghost { background: var(--surface); color: var(--ink-soft); }
.bc-dev-mac .dock .app {
  position: relative;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 700;
}
.bc-dev-mac .dock .badge {
  position: absolute;
  top: -6px; right: -6px;
  min-width: 1.15rem; height: 1.15rem;
  padding: 0 0.25rem;
  border-radius: 999px;
  background: var(--badge-count-bg);
  color: var(--badge-count-ink);
  border: 2px solid var(--bg);
  font-size: 0.6rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.bc-dev-tab {
  max-width: 820px;
  margin: 0 auto;
  border: 1px solid var(--line);
  border-radius: 1rem;
  overflow: hidden;
  background: var(--bg);
  box-shadow: 0 18px 48px color-mix(in srgb, var(--ink) 12%, transparent);
  min-height: 26rem;
  display: flex;
  flex-direction: column;
}
.bc-dev-tab .tbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.65rem 0.9rem;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}
.bc-dev-tab .tbar .mark {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--accent);
}
.bc-dev-tab .split {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  flex: 1;
  min-height: 22rem;
}
@media (max-width: 720px) { .bc-dev-tab .split { grid-template-columns: 1fr; } }
.bc-dev-tab .list { border-right: 1px solid var(--line); overflow: auto; }
.bc-dev-tab .detail {
  padding: 1rem 1.05rem;
  background: var(--surface);
  overflow: auto;
}
.bc-dev-tab .detail h3 {
  margin: 0 0 0.25rem;
  font-size: 1.05rem;
}
.bc-dev-tab .detail .meta {
  margin: 0 0 0.85rem;
  font-size: 0.8rem;
  color: var(--ink-soft);
}
.bc-dev-tab .block {
  border: 1px solid var(--line);
  border-radius: 0.4rem;
  padding: 0.7rem 0.8rem;
  background: var(--bg);
  margin-bottom: 0.65rem;
}
.bc-dev-tab .block .k {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin: 0 0 0.2rem;
}
.bc-dev-tab .block p { margin: 0; font-size: 0.86rem; color: var(--ink); }

.bc-ui-row {
  appearance: none;
  width: 100%;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 0.55rem;
  align-items: center;
  text-align: left;
  font: inherit;
  color: inherit;
  cursor: pointer;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line);
  border-left: 3px solid transparent;
  padding: 0.7rem 0.75rem;
}
.bc-ui-row:hover { background: var(--surface); }
.bc-ui-row.sel {
  background: color-mix(in srgb, var(--accent) 10%, var(--surface));
  border-left-color: var(--accent);
}
.bc-ui-row .title { font-weight: 600; font-size: 0.86rem; }
.bc-ui-row .sub { font-size: 0.7rem; color: var(--ink-soft); margin-top: 0.1rem; }
.bc-ui-row .when { font-family: var(--mono); font-size: 0.62rem; color: var(--ink-soft); }

.bc-ui-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  padding: 0.55rem 0.65rem;
  border-bottom: 1px solid var(--line);
}
.bc-ui-filters button {
  appearance: none;
  font-family: var(--mono);
  font-size: 0.6rem;
  padding: 0.25rem 0.5rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--ink-soft);
  cursor: pointer;
}
.bc-ui-filters button.on {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
}

.bc-badge {
  min-width: 1.25rem;
  height: 1.25rem;
  padding: 0 0.35rem;
  border-radius: 999px;
  background: var(--badge-count-bg);
  color: var(--badge-count-ink);
  font-family: var(--mono);
  font-size: 0.65rem;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.bc-ui-frame {
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: var(--bc-radius);
  overflow: hidden;
  margin: 0 0 1rem;
  min-height: 12rem;
}
.bc-ui-frame iframe {
  width: 100%;
  height: 28rem;
  border: 0;
  display: block;
  background: var(--bg);
}

/* —— Full-demo exit chrome (no Brand Center sidebar) —— */
.bc-demo-bar {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.55rem 0.85rem;
  padding: 0.55rem 0.9rem;
  margin: -1.4rem -1.25rem 1.15rem;
  background: color-mix(in srgb, var(--raised) 92%, transparent);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.bc-demo-bar .back {
  appearance: none;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font: 700 0.8rem/1 var(--sans);
  color: var(--accent-ink);
  background: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 0.4rem;
  padding: 0.45rem 0.7rem;
  text-decoration: none;
  white-space: nowrap;
}
.bc-demo-bar .back:hover { filter: brightness(0.95); }
.bc-demo-bar .mode {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
  white-space: nowrap;
}
.bc-demo-bar .surfaces {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  flex: 1;
  min-width: 0;
}
.bc-demo-bar .surfaces a {
  font-family: var(--mono);
  font-size: 0.65rem;
  padding: 0.32rem 0.55rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--ink-soft);
  text-decoration: none;
}
.bc-demo-bar .surfaces a:hover { border-color: var(--accent); color: var(--ink); }
.bc-demo-bar .surfaces a.on {
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
}
.bc-demo-bar .bc-palette { margin: 0; }
.bc-demo-bar .esc {
  font-family: var(--mono);
  font-size: 0.62rem;
  color: var(--ink-soft);
}
.bc-demo-bar .esc kbd {
  font: inherit;
  padding: 0.1rem 0.35rem;
  border: 1px solid var(--line);
  border-radius: 0.25rem;
  background: var(--bg);
  color: var(--ink-mid);
}
body.bc-demo {
  padding-top: 0;
}
body.bc-demo > .bc-demo-bar + .crumb { display: none; }

/* —— Identity depth —— */
.bc-id-lockups {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  margin: 0 0 1.5rem;
}
@media (max-width: 720px) { .bc-id-lockups { grid-template-columns: 1fr; } }
.bc-id-lock {
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: var(--bc-radius);
  padding: 1.1rem 1rem;
  text-align: center;
}
.bc-id-lock.on-ink { background: #161210; border-color: #332c26; }
.bc-id-lock img {
  width: 3.5rem;
  height: 3.5rem;
  display: block;
  margin: 0 auto 0.65rem;
  border-radius: 0.45rem;
}
.bc-id-lock .cap {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin: 0;
}
.bc-id-lock.on-ink .cap { color: #8b8179; }
.bc-id-lock .word {
  margin: 0 0 0.55rem;
  font-size: 1.55rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--ink);
}
.bc-id-lock.on-ink .word { color: #dcd5cb; }
.bc-id-clear {
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: var(--bc-radius);
  padding: 1.5rem;
  margin: 0 0 1.5rem;
  display: grid;
  place-items: center;
}
.bc-id-clear .box {
  position: relative;
  width: 7.5rem;
  height: 7.5rem;
  border: 1px dashed color-mix(in srgb, var(--accent) 55%, var(--line));
  display: grid;
  place-items: center;
}
.bc-id-clear .box img { width: 3.5rem; height: 3.5rem; border-radius: 0.4rem; }
.bc-id-clear .guide {
  position: absolute;
  font-family: var(--mono);
  font-size: 0.58rem;
  color: var(--accent);
  letter-spacing: 0.04em;
}
.bc-id-clear .guide.t { top: -1.1rem; left: 50%; transform: translateX(-50%); }
.bc-id-clear .guide.b { bottom: -1.1rem; left: 50%; transform: translateX(-50%); }
.bc-id-clear .guide.l { left: -2.4rem; top: 50%; transform: translateY(-50%); writing-mode: vertical-rl; transform: translateY(-50%) rotate(180deg); }
.bc-id-clear .guide.r { right: -2.4rem; top: 50%; writing-mode: vertical-rl; transform: translateY(-50%); }
.bc-id-clear .note {
  margin: 1.35rem 0 0;
  font-size: 0.82rem;
  color: var(--ink-soft);
  text-align: center;
  max-width: 28rem;
}
.bc-id-donts {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.65rem;
  margin: 0 0 1.25rem;
}
@media (max-width: 820px) { .bc-id-donts { grid-template-columns: 1fr 1fr; } }
.bc-id-dont {
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: var(--bc-radius);
  padding: 0.9rem 0.75rem 0.85rem;
  text-align: center;
  position: relative;
}
.bc-id-dont .x {
  position: absolute;
  top: 0.45rem;
  left: 0.55rem;
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--ship-failed);
  font-weight: 700;
}
.bc-id-dont img {
  width: 2.6rem;
  height: 2.6rem;
  margin: 0.35rem auto 0.55rem;
  display: block;
  border-radius: 0.35rem;
}
.bc-id-dont.stretch img { transform: scaleX(1.55); }
.bc-id-dont.outline img {
  filter: none;
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
.bc-id-dont.glow img {
  box-shadow: 0 0 18px 4px color-mix(in srgb, var(--accent) 70%, transparent);
}
.bc-id-dont.recolor img { filter: hue-rotate(160deg) saturate(1.4); }
.bc-id-dont .cap {
  margin: 0;
  font-size: 0.75rem;
  color: var(--ink-soft);
}

/* —— Assets verify matrix —— */
.bc-verify {
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: var(--bc-radius);
  padding: 1.1rem 1.15rem;
  margin: 0 0 1.5rem;
}
.bc-verify .lab {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin: 0 0 0.75rem;
}
.bc-verify-row {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 0.75rem;
  align-items: baseline;
  padding: 0.45rem 0;
  border-top: 1px solid var(--line);
  font-size: 0.82rem;
}
.bc-verify-row:first-of-type { border-top: 0; }
.bc-verify-row .file { font-family: var(--mono); font-size: 0.72rem; color: var(--ink); }
.bc-verify-row .hash { font-family: var(--mono); font-size: 0.62rem; color: var(--ink-soft); }
.bc-verify-row .ok {
  font-family: var(--mono);
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--ship-ok);
}
.bc-verify-row .bad {
  font-family: var(--mono);
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--ship-failed);
}
.bc-palette-matrix {
  display: grid;
  grid-template-columns: auto repeat(6, 1fr);
  gap: 0.35rem;
  align-items: center;
  margin: 0.75rem 0 0;
}
.bc-palette-matrix .h,
.bc-palette-matrix .r {
  font-family: var(--mono);
  font-size: 0.58rem;
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.bc-palette-matrix i {
  display: block;
  height: 1.35rem;
  border-radius: 0.25rem;
  border: 1px solid var(--line);
}

/* —— UI state strip —— */
.bc-ui-states {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin: 0 0 0.85rem;
}
.bc-ui-states button {
  appearance: none;
  font-family: var(--mono);
  font-size: 0.62rem;
  padding: 0.32rem 0.55rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--ink-soft);
  cursor: pointer;
}
.bc-ui-states button.on {
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
}
.bc-ui-overlay {
  display: none;
  min-height: 16rem;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}
.bc-ui-overlay.on { display: flex; }
.bc-ui-stage[data-mode]:not([data-mode="live"]) .bc-ui-pane { display: none !important; }
.bc-ui-stage[data-mode="live"] .bc-ui-overlay { display: none; }

.bc-demo-states {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  margin: 0 0 1rem;
}
.bc-demo-states button {
  appearance: none;
  font-family: var(--mono);
  font-size: 0.62rem;
  padding: 0.28rem 0.5rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--ink-soft);
  cursor: pointer;
}
.bc-demo-states button.on {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
}
.bc-demo-state-panel {
  display: none;
  margin: 0 0 1rem;
}
.bc-demo-state-panel.on { display: block; }


/* —— Soul / blindfold —— */
.bc-soul {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.5rem 1.75rem;
  align-items: center;
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: var(--bc-radius);
  padding: 1.75rem 1.6rem;
  margin: 0 0 1.75rem;
}
@media (max-width: 720px) { .bc-soul { grid-template-columns: 1fr; text-align: center; justify-items: center; } }
.bc-soul .mark-xl {
  width: 6.5rem;
  height: 6.5rem;
  border-radius: 1rem;
  display: block;
}
.bc-soul .line {
  margin: 0 0 0.45rem;
  font-size: clamp(1.55rem, 3.5vw, 2.15rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.1;
  color: var(--ink);
}
.bc-soul .line .stop { color: var(--accent); }
.bc-soul .sub {
  margin: 0 0 0.85rem;
  font-size: 1rem;
  color: var(--ink-mid);
  line-height: 1.45;
  max-width: 34rem;
}
.bc-soul .row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  align-items: center;
}
@media (max-width: 720px) { .bc-soul .row { justify-content: center; } }
.bc-soul .blind {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--ink-soft);
  letter-spacing: 0.04em;
}
.bc-bronze-doctrine {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin: 0 0 1.5rem;
}
@media (max-width: 720px) { .bc-bronze-doctrine { grid-template-columns: 1fr; } }
.bc-bronze-doctrine .cell {
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: var(--bc-radius);
  padding: 1.1rem 1.15rem;
}
.bc-bronze-doctrine .cell .same {
  display: flex;
  gap: 0.45rem;
  align-items: center;
  margin: 0 0 0.65rem;
}
.bc-bronze-doctrine .cell .same i {
  width: 1.6rem;
  height: 1.6rem;
  border-radius: 0.35rem;
  border: 1px solid var(--line);
}
.bc-bronze-doctrine .cell h3 {
  margin: 0 0 0.3rem;
  font-size: 1rem;
}
.bc-bronze-doctrine .cell h3 .stop { color: var(--accent); }
.bc-bronze-doctrine .cell p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--ink-mid);
  line-height: 1.4;
}

/* —— scroll chapters: tones, side dots, next arrow —— */
html { scroll-behavior: smooth; }
.bc-chapter,
.bc-prose h1,
.bc-prose h2 {
  scroll-margin-top: 5.5rem;
}

body.bc.bc-scroll {
  transition: background-color 0.45s ease, color 0.45s ease;
}
body.bc[data-scroll-tone="bg"] { background: var(--bg); }
body.bc[data-scroll-tone="surface"] { background: var(--surface); }
body.bc[data-scroll-tone="raised"] { background: var(--raised); }

.bc-chapter {
  position: relative;
  min-height: min(100svh, 56rem);
  display: grid;
  align-content: center;
  padding: 5.5rem clamp(1.1rem, 4vw, 2rem) 4.5rem;
  border-bottom: 1px solid var(--line);
  transition: background-color 0.45s ease;
}
.bc-chapter[data-tone="bg"] { background: var(--bg); }
.bc-chapter[data-tone="surface"] { background: var(--surface); }
.bc-chapter[data-tone="raised"] { background: var(--raised); }
.bc-chapter > .inner {
  width: min(56rem, 100%);
  margin: 0 auto;
}
.bc-chapter--compact {
  min-height: 0;
  align-content: start;
  padding: 2.4rem clamp(1.1rem, 4vw, 2rem);
}
.bc-chapter .bc-card {
  max-width: 36rem;
}

body.bc.bc-scroll-hub .bc-wrap {
  width: 100%;
  max-width: none;
  margin: 0;
  padding: 0 0 3rem;
}
body.bc.bc-scroll-hub .bc-wrap::before { display: none; }
body.bc.bc-scroll-hub .bc-top {
  position: sticky;
  top: 0;
  z-index: 30;
  margin: 0;
  padding: 0.85rem clamp(1.1rem, 4vw, 2rem);
  width: 100%;
  box-sizing: border-box;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
body.bc.bc-scroll-hub .bc-foot {
  width: min(56rem, calc(100% - 3rem));
  margin: 0 auto;
  padding: 2rem 0 1rem;
}

.bc-dots {
  position: fixed;
  right: 1.1rem;
  top: 50%;
  transform: translateY(-50%);
  z-index: 40;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}
.bc-dots a {
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 999px;
  background: var(--line);
  text-decoration: none;
  transition: background 0.15s ease, transform 0.15s ease;
}
.bc-dots a.on {
  background: var(--accent);
  transform: scale(1.35);
}
.bc-dots a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.bc-more {
  position: fixed;
  left: 50%;
  bottom: 1.35rem;
  z-index: 40;
  width: 2.6rem;
  height: 2.6rem;
  margin: 0;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: color-mix(in srgb, var(--raised) 92%, transparent);
  color: var(--ink-mid);
  cursor: pointer;
  transform: translateX(-50%);
  box-shadow: 0 8px 24px color-mix(in srgb, var(--ink) 8%, transparent);
  animation: bc-more-bob 1.9s ease-in-out infinite;
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease, opacity 0.2s ease;
}
.bc-more:hover {
  color: var(--accent);
  border-color: color-mix(in srgb, var(--accent) 45%, var(--line));
}
.bc-more:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
.bc-more[hidden] { display: none; }

@keyframes bc-more-bob {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(0.4rem); }
}

@media (max-width: 720px) {
  .bc-dots { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  body.bc.bc-scroll { transition: none; }
  .bc-chapter { transition: none; }
  .bc-more { animation: none; }
  html { scroll-behavior: auto; }
}