/* ==========================================================================
   Fiche Parrain — blueprint / technical-drawing stylesheet
   Original design tokens & components. All classes use the `bp-` prefix.
   Dark mode is the default archetype; light mode = "whiteprint" inverse.
   ========================================================================== */

:root {
  /* Dark (default) — cyan/white lines on deep navy */
  --bp-bg: #0a1a2f;
  --bp-bg-2: #0d223d;
  --bp-panel: rgba(13, 34, 61, 0.72);
  --bp-ink: #e9f4fb;
  --bp-ink-2: #a9c8dc;
  --bp-line: #55d3e4;
  --bp-line-soft: rgba(85, 211, 228, 0.28);
  --bp-line-faint: rgba(85, 211, 228, 0.12);
  --bp-accent: #ffb54d;
  --bp-accent-ink: #241300;
  --bp-ok: #7fe0a6;
  --bp-danger: #ff8f7a;

  --bp-font-head: "Bahnschrift", "DIN Alternate", "Roboto Condensed", "Segoe UI", system-ui, sans-serif;
  --bp-font-body: "Segoe UI", system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
  --bp-font-mono: "Consolas", ui-monospace, "SF Mono", Menlo, "Roboto Mono", monospace;

  --bp-grid: 26px;
  --bp-radius: 4px;
  --bp-maxw: 1080px;
  --bp-shadow: 0 10px 40px rgba(0, 0, 0, 0.35);
}

:root[data-theme="light"] {
  /* Whiteprint — navy lines on pale blueprint paper */
  --bp-bg: #eaf1f8;
  --bp-bg-2: #ffffff;
  --bp-panel: rgba(255, 255, 255, 0.86);
  --bp-ink: #0a1a2f;
  --bp-ink-2: #3a5d76;
  --bp-line: #0e6a94;
  --bp-line-soft: rgba(14, 106, 148, 0.26);
  --bp-line-faint: rgba(14, 106, 148, 0.12);
  --bp-accent: #b25e00;
  --bp-accent-ink: #fff7ec;
  --bp-ok: #1c7a4a;
  --bp-danger: #b23b23;
  --bp-shadow: 0 10px 30px rgba(14, 42, 71, 0.14);
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --bp-bg: #eaf1f8;
    --bp-bg-2: #ffffff;
    --bp-panel: rgba(255, 255, 255, 0.86);
    --bp-ink: #0a1a2f;
    --bp-ink-2: #3a5d76;
    --bp-line: #0e6a94;
    --bp-line-soft: rgba(14, 106, 148, 0.26);
    --bp-line-faint: rgba(14, 106, 148, 0.12);
    --bp-accent: #b25e00;
    --bp-accent-ink: #fff7ec;
    --bp-ok: #1c7a4a;
    --bp-danger: #b23b23;
    --bp-shadow: 0 10px 30px rgba(14, 42, 71, 0.14);
  }
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation: none !important; transition: none !important; }
}

body {
  margin: 0;
  color: var(--bp-ink);
  background-color: var(--bp-bg);
  /* dashed measurement grid, like graph/engineering paper */
  background-image:
    linear-gradient(var(--bp-line-faint) 1px, transparent 1px),
    linear-gradient(90deg, var(--bp-line-faint) 1px, transparent 1px);
  background-size: var(--bp-grid) var(--bp-grid);
  font-family: var(--bp-font-body);
  font-size: 17px;
  line-height: 1.65;
  overflow-x: hidden;
}

.bp-shell { max-width: var(--bp-maxw); margin: 0 auto; padding: 0 20px; }

a { color: var(--bp-line); text-underline-offset: 3px; }
a:hover { color: var(--bp-accent); }

:focus-visible {
  outline: 2px dashed var(--bp-accent);
  outline-offset: 3px;
  border-radius: 2px;
}

.bp-skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--bp-accent); color: var(--bp-accent-ink);
  padding: 10px 16px; z-index: 100; font-weight: 700;
}
.bp-skip:focus { left: 8px; top: 8px; }

/* ---- Typography ---- */
h1, h2, h3, h4 {
  font-family: var(--bp-font-head);
  line-height: 1.15;
  letter-spacing: 0.01em;
  font-weight: 700;
}
h1 { font-size: clamp(1.9rem, 5vw, 3rem); margin: 0 0 0.4em; }
h2 { font-size: clamp(1.35rem, 3.4vw, 2rem); margin: 2.2em 0 0.5em; }
h3 { font-size: clamp(1.1rem, 2.4vw, 1.35rem); margin: 1.6em 0 0.4em; }
p { margin: 0 0 1em; }
strong { color: var(--bp-ink); }

.bp-eyebrow {
  font-family: var(--bp-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--bp-line);
  margin: 0 0 0.6em;
  display: inline-flex; align-items: center; gap: 8px;
}
.bp-eyebrow::before {
  content: ""; width: 26px; height: 1px;
  background: repeating-linear-gradient(90deg, var(--bp-line) 0 5px, transparent 5px 9px);
}

/* ---- Header / nav ---- */
.bp-top {
  position: sticky; top: 0; z-index: 40;
  background: color-mix(in srgb, var(--bp-bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--bp-line-soft);
}
.bp-top__inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 10px 20px; max-width: var(--bp-maxw); margin: 0 auto;
}
.bp-brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--bp-ink); }
.bp-brand svg { width: 34px; height: 34px; display: block; }
.bp-brand b { font-family: var(--bp-font-head); font-size: 1.05rem; letter-spacing: 0.04em; }
.bp-brand span { font-family: var(--bp-font-mono); font-size: 0.64rem; color: var(--bp-ink-2); letter-spacing: 0.18em; display: block; }

.bp-nav { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.bp-nav a {
  font-family: var(--bp-font-head); font-size: 0.92rem; letter-spacing: 0.02em;
  color: var(--bp-ink-2); text-decoration: none; padding: 8px 10px; border-radius: 3px;
}
.bp-nav a:hover, .bp-nav a[aria-current="page"] { color: var(--bp-ink); background: var(--bp-line-faint); }
.bp-nav a[aria-current="page"] { color: var(--bp-line); }

.bp-themebtn {
  font-family: var(--bp-font-mono); font-size: 0.72rem; letter-spacing: 0.08em;
  background: transparent; color: var(--bp-ink-2);
  border: 1px solid var(--bp-line-soft); border-radius: 3px;
  padding: 7px 10px; cursor: pointer;
}
.bp-themebtn:hover { color: var(--bp-line); border-color: var(--bp-line); }

.bp-navtoggle { display: none; }

/* ---- Layout blocks ---- */
main { display: block; }
.bp-band { padding: 34px 0; border-bottom: 1px dashed var(--bp-line-soft); }
.bp-band--lead { padding-top: 44px; }

/* Blueprint "sheet" panel with corner ticks + title block */
.bp-sheet {
  position: relative;
  background: var(--bp-panel);
  border: 1px solid var(--bp-line-soft);
  border-radius: var(--bp-radius);
  padding: 26px;
  box-shadow: var(--bp-shadow);
}
.bp-sheet::before, .bp-sheet::after {
  content: ""; position: absolute; width: 14px; height: 14px; border: 1.5px solid var(--bp-line);
}
.bp-sheet::before { top: 8px; left: 8px; border-right: 0; border-bottom: 0; }
.bp-sheet::after { bottom: 8px; right: 8px; border-left: 0; border-top: 0; }

/* ---- Hero / lead grid ---- */
.bp-lead { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 30px; align-items: start; }
@media (max-width: 860px) { .bp-lead { grid-template-columns: 1fr; } }
.bp-lead p.bp-sub { color: var(--bp-ink-2); font-size: 1.08rem; max-width: 52ch; }

/* ---- The schematic component callout (referral code unit) ---- */
.bp-unit {
  position: relative;
  margin: 0;
  background:
    radial-gradient(circle at 12px 12px, var(--bp-line-faint) 1px, transparent 1.6px) 0 0 / var(--bp-grid) var(--bp-grid),
    var(--bp-bg-2);
  border: 1.5px solid var(--bp-line);
  border-radius: var(--bp-radius);
  padding: 20px 20px 18px;
  box-shadow: var(--bp-shadow);
}
.bp-unit__tag {
  position: absolute; top: -11px; left: 16px;
  font-family: var(--bp-font-mono); font-size: 0.7rem; letter-spacing: 0.14em;
  background: var(--bp-bg-2); color: var(--bp-line);
  border: 1px solid var(--bp-line); border-radius: 2px; padding: 2px 8px;
}
.bp-unit__frame {
  display: flex; align-items: center; gap: 6px; flex-wrap: nowrap;
  border: 1px dashed var(--bp-line-soft); border-radius: 3px;
  padding: 12px 12px; margin-top: 6px; min-height: 58px;
}
.bp-unit__dim { font-family: var(--bp-font-mono); color: var(--bp-ink-2); font-size: 1.05rem; }
.bp-unit__code {
  font-family: var(--bp-font-mono); font-weight: 700;
  font-size: clamp(1.05rem, 3.6vw, 1.5rem); color: var(--bp-ink);
  letter-spacing: 0.02em;
  min-width: 8ch; /* fixes box width => zero CLS on code swap */
  display: inline-block;
}
.bp-copy {
  margin-left: auto;
  font-family: var(--bp-font-head); font-size: 0.95rem; letter-spacing: 0.04em;
  background: var(--bp-accent); color: var(--bp-accent-ink);
  border: 0; border-radius: 3px; padding: 12px 18px; cursor: pointer;
  min-width: 112px; /* stable width across "Copier" / "Copié ✓" => zero CLS */
  text-align: center; white-space: nowrap; font-weight: 700;
}
.bp-copy:hover { filter: brightness(1.06); }
.bp-copy[data-copied="1"] { background: var(--bp-ok); color: var(--bp-accent-ink); }

/* leader line + verified note under the frame */
.bp-unit__leader {
  display: flex; align-items: center; gap: 10px; margin-top: 14px;
  font-family: var(--bp-font-mono); font-size: 0.76rem; color: var(--bp-ink-2);
}
.bp-unit__leader::before {
  content: ""; flex: 0 0 34px; height: 1px;
  background: repeating-linear-gradient(90deg, var(--bp-line) 0 6px, transparent 6px 11px);
}
.bp-unit__leader b { color: var(--bp-line); }

.bp-openrow { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-top: 14px; }
.bp-openlink {
  font-family: var(--bp-font-head); font-weight: 700; letter-spacing: 0.03em;
  text-decoration: none; color: var(--bp-line);
  border: 1.5px solid var(--bp-line); border-radius: 3px; padding: 11px 16px;
}
.bp-openlink:hover { background: var(--bp-line); color: var(--bp-bg); }
.bp-hint { font-family: var(--bp-font-mono); font-size: 0.74rem; color: var(--bp-ink-2); }

/* ---- Buttons (generic actions, unique names) ---- */
.bp-action {
  display: inline-block; font-family: var(--bp-font-head); font-weight: 700; letter-spacing: 0.03em;
  text-decoration: none; cursor: pointer; border-radius: 3px; padding: 12px 20px;
  background: var(--bp-accent); color: var(--bp-accent-ink); border: 0;
}
.bp-action:hover { filter: brightness(1.06); color: var(--bp-accent-ink); }
.bp-action--outline { background: transparent; color: var(--bp-line); border: 1.5px solid var(--bp-line); }
.bp-action--outline:hover { background: var(--bp-line); color: var(--bp-bg); filter: none; }

/* ---- Callout note (warning / info annotation) ---- */
.bp-note {
  position: relative; border-left: 3px solid var(--bp-accent);
  background: color-mix(in srgb, var(--bp-accent) 10%, transparent);
  padding: 14px 16px; border-radius: 3px; margin: 18px 0;
}
.bp-note--warn { border-left-color: var(--bp-danger); background: color-mix(in srgb, var(--bp-danger) 10%, transparent); }
.bp-note__tag {
  font-family: var(--bp-font-mono); font-size: 0.7rem; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--bp-accent); display: block; margin-bottom: 4px;
}
.bp-note--warn .bp-note__tag { color: var(--bp-danger); }
.bp-note p:last-child { margin-bottom: 0; }

/* ---- Spec / step list (numbered, schematic) ---- */
.bp-steps { list-style: none; counter-reset: bp-step; margin: 18px 0; padding: 0; }
.bp-steps > li {
  counter-increment: bp-step; position: relative; padding: 4px 0 20px 56px; margin: 0;
  border-left: 1px dashed var(--bp-line-soft); margin-left: 18px;
}
.bp-steps > li:last-child { border-left-color: transparent; padding-bottom: 0; }
.bp-steps > li::before {
  content: counter(bp-step, decimal-leading-zero);
  position: absolute; left: -18px; top: 0;
  width: 36px; height: 36px; display: grid; place-items: center;
  font-family: var(--bp-font-mono); font-weight: 700; font-size: 0.85rem;
  color: var(--bp-bg); background: var(--bp-line); border-radius: 50%;
}
.bp-steps h3 { margin: 0 0 0.2em; }

/* ---- Feature grid (spec tiles) ---- */
.bp-grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 20px 0; }
@media (max-width: 820px) { .bp-grid3 { grid-template-columns: 1fr; } }
.bp-tile {
  background: var(--bp-panel); border: 1px solid var(--bp-line-soft);
  border-radius: var(--bp-radius); padding: 18px;
}
.bp-tile__ico { width: 40px; height: 40px; margin-bottom: 8px; color: var(--bp-line); }
.bp-tile h3 { margin-top: 0; }
.bp-tile p { margin-bottom: 0; color: var(--bp-ink-2); }

/* ---- Tables (spec sheet) ---- */
.bp-tablewrap { overflow-x: auto; -webkit-overflow-scrolling: touch; margin: 18px 0; border: 1px solid var(--bp-line-soft); border-radius: var(--bp-radius); }
table.bp-table { border-collapse: collapse; width: 100%; min-width: 560px; font-size: 0.96rem; }
.bp-table caption { text-align: left; font-family: var(--bp-font-mono); font-size: 0.74rem; letter-spacing: 0.1em; color: var(--bp-ink-2); padding: 10px 14px; }
.bp-table th, .bp-table td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--bp-line-faint); vertical-align: top; }
.bp-table thead th { font-family: var(--bp-font-head); letter-spacing: 0.03em; color: var(--bp-line); border-bottom: 1.5px solid var(--bp-line-soft); background: var(--bp-line-faint); }
.bp-table tbody tr:last-child td { border-bottom: 0; }
.bp-verified { font-family: var(--bp-font-mono); font-size: 0.72rem; color: var(--bp-ok); white-space: nowrap; }

/* ---- FAQ (details/summary) ---- */
.bp-faq { margin: 16px 0; }
.bp-faq details {
  border: 1px solid var(--bp-line-soft); border-radius: var(--bp-radius);
  margin-bottom: 10px; background: var(--bp-panel); overflow: hidden;
}
.bp-faq summary {
  cursor: pointer; padding: 14px 16px; font-family: var(--bp-font-head); font-weight: 700;
  list-style: none; display: flex; justify-content: space-between; gap: 12px; align-items: center;
}
.bp-faq summary::-webkit-details-marker { display: none; }
.bp-faq summary::after { content: "+"; font-family: var(--bp-font-mono); color: var(--bp-line); font-size: 1.3rem; }
.bp-faq details[open] summary::after { content: "\2212"; }
.bp-faq details > div { padding: 0 16px 14px; color: var(--bp-ink-2); }
.bp-faq details > div p:last-child { margin-bottom: 0; }

/* ---- Breadcrumb ---- */
.bp-crumbs { font-family: var(--bp-font-mono); font-size: 0.74rem; letter-spacing: 0.06em; color: var(--bp-ink-2); padding: 14px 0 0; }
.bp-crumbs ol { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; margin: 0; padding: 0; }
.bp-crumbs li::after { content: "/"; margin-left: 6px; color: var(--bp-line-soft); }
.bp-crumbs li:last-child::after { content: ""; }
.bp-crumbs a { text-decoration: none; }

/* ---- Author byline ---- */
.bp-byline {
  display: flex; align-items: center; gap: 12px; margin: 24px 0;
  padding: 14px 16px; border: 1px dashed var(--bp-line-soft); border-radius: var(--bp-radius);
}
.bp-byline svg { width: 44px; height: 44px; flex: 0 0 auto; }
.bp-byline b { font-family: var(--bp-font-head); }
.bp-byline span { font-size: 0.86rem; color: var(--bp-ink-2); }

/* ---- Sources ---- */
.bp-sources { font-size: 0.9rem; color: var(--bp-ink-2); }
.bp-sources ol { padding-left: 1.2em; }
.bp-sources li { margin-bottom: 6px; }

/* ---- Blog list ---- */
.bp-posts { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin: 20px 0; }
@media (max-width: 720px) { .bp-posts { grid-template-columns: 1fr; } }
.bp-post {
  display: flex; flex-direction: column; gap: 8px;
  background: var(--bp-panel); border: 1px solid var(--bp-line-soft);
  border-radius: var(--bp-radius); padding: 18px; text-decoration: none; color: var(--bp-ink);
}
.bp-post:hover { border-color: var(--bp-line); color: var(--bp-ink); }
.bp-post time { font-family: var(--bp-font-mono); font-size: 0.72rem; color: var(--bp-ink-2); letter-spacing: 0.08em; }
.bp-post h3 { margin: 0; font-size: 1.1rem; }
.bp-post p { margin: 0; color: var(--bp-ink-2); font-size: 0.94rem; }

/* ---- Prose article ---- */
.bp-prose { max-width: 72ch; }
.bp-prose ul, .bp-prose ol { padding-left: 1.3em; }
.bp-prose li { margin-bottom: 6px; }
.bp-prose figure { margin: 20px 0; }
.bp-prose figcaption { font-family: var(--bp-font-mono); font-size: 0.74rem; color: var(--bp-ink-2); margin-top: 6px; }

/* schematic illustration frame */
.bp-figframe {
  border: 1px solid var(--bp-line-soft); border-radius: var(--bp-radius);
  background:
    linear-gradient(var(--bp-line-faint) 1px, transparent 1px) 0 0 / 18px 18px,
    linear-gradient(90deg, var(--bp-line-faint) 1px, transparent 1px) 0 0 / 18px 18px,
    var(--bp-bg-2);
  padding: 16px;
}
.bp-figframe svg { display: block; width: 100%; height: auto; }
.bp-newsphoto { padding: 0; overflow: hidden; }
.bp-newsphoto img { display: block; width: 100%; height: auto; }
.bp-newsphoto figcaption { padding: 8px 14px; }

/* ---- Footer ---- */
.bp-foot { border-top: 1px solid var(--bp-line-soft); margin-top: 20px; padding: 28px 0 40px; }
.bp-foot__grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 24px; }
@media (max-width: 760px) { .bp-foot__grid { grid-template-columns: 1fr; } }
.bp-foot h4 { font-family: var(--bp-font-head); font-size: 0.82rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--bp-ink-2); margin: 0 0 10px; }
.bp-foot ul { list-style: none; padding: 0; margin: 0; }
.bp-foot li { margin-bottom: 6px; }
.bp-foot a { text-decoration: none; color: var(--bp-ink-2); }
.bp-foot a:hover { color: var(--bp-line); }
.bp-disclosure { font-size: 0.82rem; color: var(--bp-ink-2); border-top: 1px dashed var(--bp-line-soft); margin-top: 22px; padding-top: 16px; }
.bp-disclosure b { color: var(--bp-ink); }

.bp-lastmod { font-family: var(--bp-font-mono); font-size: 0.72rem; color: var(--bp-ink-2); letter-spacing: 0.06em; }

/* ---- Mobile nav ---- */
@media (max-width: 720px) {
  .bp-navtoggle {
    display: inline-flex; background: transparent; border: 1px solid var(--bp-line-soft);
    color: var(--bp-ink); border-radius: 3px; padding: 8px 10px; cursor: pointer; font-size: 1rem;
  }
  .bp-nav {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--bp-bg-2); border-bottom: 1px solid var(--bp-line-soft); padding: 8px 16px 16px;
  }
  .bp-nav[data-open="1"] { display: flex; }
  .bp-nav a { padding: 12px 8px; border-bottom: 1px solid var(--bp-line-faint); }
  .bp-top__inner { position: relative; flex-wrap: wrap; }
}

.bp-visually-hidden {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* ==========================================================================
   Datasheet components (spec-sheet IA): engineering title block / cartouche,
   spec parameter tables, per-model spec sheets, definition lists, anchored
   table of contents, reference marks. Same bp- tokens, palette & fonts.
   ========================================================================== */

/* ---- Engineering title block / cartouche (dl grid) ---- */
.bp-titleblock {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 0 0 22px;
  border: 1.5px solid var(--bp-line);
  border-radius: var(--bp-radius);
  overflow: hidden;
  background: var(--bp-bg-2);
  box-shadow: var(--bp-shadow);
}
.bp-titleblock__cell {
  padding: 8px 12px;
  border-top: 1px solid var(--bp-line-soft);
  border-right: 1px solid var(--bp-line-soft);
}
.bp-titleblock__cell:last-child { border-right: 0; }
.bp-titleblock__cell--full {
  grid-column: 1 / -1;
  border-top: 0;
  border-right: 0;
  background: var(--bp-line-faint);
}
.bp-titleblock__k {
  margin: 0 0 2px;
  font-family: var(--bp-font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--bp-ink-2);
}
.bp-titleblock__v {
  margin: 0;
  font-family: var(--bp-font-head);
  font-size: 0.98rem;
  letter-spacing: 0.01em;
  color: var(--bp-ink);
}
.bp-titleblock__cell--full .bp-titleblock__v { color: var(--bp-line); font-size: 1.06rem; }
@media (max-width: 620px) {
  .bp-titleblock { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* ---- Reference superscript marks -> numbered sources ---- */
.bp-ref { font-family: var(--bp-font-mono); font-size: 0.64em; font-weight: 700; white-space: nowrap; }
.bp-ref a { color: var(--bp-line); text-decoration: none; padding: 0 1px; }
.bp-ref a:hover { color: var(--bp-accent); text-decoration: underline; }

/* ---- Spec parameter tables (Paramètre / Valeur / Réf.) ---- */
.bp-table--spec th[scope="row"] {
  font-family: var(--bp-font-body); font-weight: 600; color: var(--bp-ink); width: 44%;
}
.bp-spec-val { font-family: var(--bp-font-mono); font-size: 0.9rem; color: var(--bp-ink); }
.bp-table td.bp-spec-ref { width: 3.5rem; white-space: nowrap; text-align: center; color: var(--bp-ink-2); }

/* ---- Model spec-sheet grid + cards ---- */
.bp-specgrid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin: 18px 0; }
@media (max-width: 760px) { .bp-specgrid { grid-template-columns: 1fr; } }
.bp-modelsheet {
  background: var(--bp-panel);
  border: 1px solid var(--bp-line-soft);
  border-radius: var(--bp-radius);
  padding: 18px;
}
.bp-modelsheet__head {
  display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap;
  margin-bottom: 10px; padding-bottom: 10px;
  border-bottom: 1px dashed var(--bp-line-soft);
}
.bp-modelsheet__ref {
  font-family: var(--bp-font-mono); font-size: 0.66rem; letter-spacing: 0.12em;
  color: var(--bp-bg); background: var(--bp-line);
  border-radius: 2px; padding: 3px 7px; white-space: nowrap;
}
.bp-modelsheet__head h3 { margin: 0; font-size: 1.14rem; }

/* ---- Definition list (spec rows inside a model sheet) ---- */
.bp-dl { margin: 0; }
.bp-dl__row {
  display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 12px;
  padding: 7px 0; border-bottom: 1px solid var(--bp-line-faint);
}
.bp-dl__row:last-child { border-bottom: 0; }
.bp-dl dt {
  margin: 0;
  font-family: var(--bp-font-mono); font-size: 0.7rem; letter-spacing: 0.05em;
  text-transform: uppercase; color: var(--bp-ink-2);
}
.bp-dl dd { margin: 0; font-size: 0.92rem; color: var(--bp-ink); }

/* ---- Anchored table of contents (reference feel) ---- */
.bp-toc {
  margin: 18px 0 8px; padding: 16px 18px;
  background: var(--bp-panel);
  border: 1px solid var(--bp-line-soft);
  border-left: 3px solid var(--bp-line);
  border-radius: var(--bp-radius);
}
.bp-toc__title {
  display: block; margin-bottom: 8px;
  font-family: var(--bp-font-mono); font-size: 0.7rem; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--bp-line);
}
.bp-toc ol { margin: 0; padding-left: 1.4em; }
.bp-toc li { margin-bottom: 5px; }
.bp-toc a { text-decoration: none; }
.bp-toc a:hover { text-decoration: underline; }