/* ═══════════════════════════════════════════════════════════════
   SUMMIT TRACTORS — TX25H SMART OPERATOR MANUAL
   Brand system (matches Buyer's Guide + Owners App):
   Primary: #254A4F · Gold: #E6B24A
   Fonts: Merriweather (serif, display) + Open Sans (sans, body)
   ═══════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Merriweather:ital,wght@0,400;0,700;1,400&family=Open+Sans:wght@400;500;600;700;800&display=swap');

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  /* Brand palette */
  --brand-dark:        #254a4f;
  --brand-deeper:      #1a383c;
  --brand-ink:         #0f2326;
  --brand-mist:        #f3f8f7;
  --brand-accent:      #e6f0e9;
  --brand-rule:        #c9d6d3;
  --brand-gold:        #e6b24a;
  --brand-gold-deeper: #b88522;
  --brand-gold-light:  #faecc9;

  /* Text */
  --text-main:   #2b2f31;
  --text-muted:  #5a6468;
  --text-faint:  #8a9094;

  /* Surfaces */
  --paper:       #ffffff;
  --surface:     #ffffff;
  --page-border: #dde5e2;

  /* Callouts */
  --danger:  #b71c1c;
  --warning: #b88522;
  --caution: #f6a02f;

  /* Shadows */
  --shadow-sm: 0 4px 14px rgba(15,35,38,.08);
  --shadow-md: 0 12px 30px rgba(15,35,38,.10);
  --shadow-lg: 0 32px 68px rgba(15,35,38,.14);
}

/* ─────── Dark mode ─────── */
body.dark-mode {
  --paper:       #0f1618;
  --surface:     #172124;
  --brand-mist:  #162023;
  --brand-accent:#1e2b2e;
  --brand-rule:  #2d3a3d;
  --page-border: #2d3a3d;
  --text-main:   #e8ecec;
  --text-muted:  #a0a8aa;
  --text-faint:  #6c7577;
  --brand-dark:  #3d7278;
  --brand-deeper:#2d5a5f;
  --brand-ink:   #1a2c2f;
  --shadow-lg:   0 32px 68px rgba(0,0,0,.5);
  --shadow-md:   0 12px 30px rgba(0,0,0,.35);
  --shadow-sm:   0 4px 14px rgba(0,0,0,.28);
}

html {
  background:
    radial-gradient(1200px 600px at 50% -40px, rgba(37,74,79,0.06), transparent 65%),
    linear-gradient(180deg, #eef3f0 0%, #e1ebe6 100%);
  min-height: 100vh;
  scroll-behavior: smooth;
}
body.dark-mode, html:has(body.dark-mode) {
  background:
    radial-gradient(1200px 600px at 50% -40px, rgba(61,114,120,0.1), transparent 65%),
    linear-gradient(180deg, #0a1113 0%, #0f1618 100%);
}

body {
  font-family: 'Open Sans', 'Helvetica Neue', Arial, sans-serif;
  color: var(--text-main);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  transition: background 0.25s ease, color 0.25s ease;
}

/* ═══════════════════════════════════════════════════════════════
   TOP BAR
   ═══════════════════════════════════════════════════════════════ */
.topbar {
  position: sticky; top: 0; z-index: 100;
  background: linear-gradient(145deg, var(--brand-dark) 0%, var(--brand-deeper) 60%, var(--brand-ink) 100%);
  color: #fff;
  border-bottom: 3px solid var(--brand-gold);
  box-shadow: 0 4px 18px rgba(15,35,38,0.25);
}
.topbar-inner {
  max-width: 1400px; margin: 0 auto;
  display: grid; grid-template-columns: auto 1fr auto;
  align-items: center; gap: 24px;
  padding: 12px 28px;
}
.brand-lockup { display: flex; align-items: center; gap: 14px; text-decoration: none; color: inherit; }
.brand-logo {
  flex-shrink: 0;
  height: 50px; display: flex; align-items: center;
}
.brand-logo img {
  height: 100%; width: auto; display: block;
  max-width: 180px; object-fit: contain;
  /* Logo ships on black background — treat the black as our header color */
  mix-blend-mode: screen;
  filter: contrast(1.08);
}
.brand-divider {
  width: 1px; height: 34px;
  background: linear-gradient(180deg, transparent 0%, rgba(230,178,74,0.55) 30%, rgba(230,178,74,0.55) 70%, transparent 100%);
  flex-shrink: 0;
}
.brand-text .line1 {
  font-family: 'Open Sans', sans-serif; font-weight: 800;
  font-size: 0.68rem; letter-spacing: 0.28em;
  color: var(--brand-gold); text-transform: uppercase;
}
.brand-text .line2 {
  font-family: 'Merriweather', Georgia, serif; font-weight: 700;
  font-size: 0.95rem; color: #fff; line-height: 1.15; margin-top: 3px;
  white-space: nowrap;
}

/* Search */
.search-wrap { position: relative; max-width: 560px; width: 100%; margin: 0 auto; }
.search-input {
  width: 100%;
  font-family: 'Open Sans', sans-serif; font-size: 0.95rem;
  padding: 11px 18px 11px 44px;
  border: 1px solid rgba(255,255,255,0.25);
  background: rgba(255,255,255,0.12);
  color: #fff;
  border-radius: 999px;
  outline: none;
  transition: all .2s ease;
}
.search-input::placeholder { color: rgba(255,255,255,0.7); }
.search-input:focus {
  background: #fff; color: var(--brand-ink);
  border-color: var(--brand-gold);
  box-shadow: 0 0 0 4px rgba(230,178,74,0.28);
}
.search-input:focus::placeholder { color: var(--text-muted); }
.search-icon {
  position: absolute; left: 15px; top: 50%; transform: translateY(-50%);
  width: 18px; height: 18px; opacity: .75; pointer-events: none;
  fill: #fff;
}
.search-input:focus ~ .search-icon { fill: var(--brand-dark); opacity: 1; }

.search-results {
  position: absolute; top: calc(100% + 8px); left: 0; right: 0;
  background: var(--paper); border-radius: 14px;
  box-shadow: 0 18px 48px rgba(0,0,0,.22);
  max-height: 60vh; overflow-y: auto;
  display: none; color: var(--text-main);
  border: 1px solid var(--page-border);
}
.search-results.open { display: block; }
.search-result {
  padding: 12px 18px; cursor: pointer;
  border-bottom: 1px solid var(--page-border);
  transition: background .12s ease;
}
.search-result:last-child { border-bottom: none; }
.search-result:hover, .search-result.active { background: var(--brand-mist); }
.search-result .sr-crumb {
  font-size: 0.7rem; font-weight: 700; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--brand-dark);
}
.search-result .sr-title {
  font-family: 'Merriweather', Georgia, serif;
  font-size: 0.98rem; font-weight: 700;
  color: var(--brand-ink); margin-top: 2px;
}
body.dark-mode .search-result .sr-title { color: #e8ecec; }
.search-result .sr-excerpt {
  font-size: 0.85rem; color: var(--text-muted);
  margin-top: 4px; line-height: 1.5;
}
.search-result mark { background: #fff3c8; color: #0f2326; padding: 0 2px; border-radius: 2px; }
body.dark-mode .search-result mark { background: #e6b24a; color: #0f2326; }
.search-no-results { padding: 20px; text-align: center; color: var(--text-muted); font-size: 0.9rem; }

/* Topbar actions */
.topbar-actions { display: flex; align-items: center; gap: 8px; }
#btnHomeTop { display:grid; }
.iconbtn {
  width: 38px; height: 38px; border-radius: 10px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.2);
  color: #fff; display: grid; place-items: center;
  cursor: pointer; transition: all .15s ease;
}
.iconbtn:hover { background: var(--brand-gold); color: var(--brand-ink); border-color: var(--brand-gold); }
.iconbtn svg { width: 18px; height: 18px; }

.btn-pill {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: 'Open Sans', sans-serif; font-size: 0.8rem; font-weight: 700;
  letter-spacing: 0.08em; text-transform: uppercase;
  padding: 8px 14px; border-radius: 999px;
  text-decoration: none; transition: all .18s ease;
  border: 1px solid rgba(255,255,255,0.25);
  color: #fff; background: rgba(255,255,255,0.08);
  cursor: pointer; font-family: inherit;
}
.btn-pill:hover { background: var(--brand-gold); color: var(--brand-ink); border-color: var(--brand-gold); }
.btn-pill.primary { background: var(--brand-gold); color: var(--brand-ink); border-color: var(--brand-gold); }
.btn-pill.primary:hover { background: #f0c26a; }

/* ═══════════════════════════════════════════════════════════════
   LAYOUT
   ═══════════════════════════════════════════════════════════════ */
.layout {
  max-width: 1400px; margin: 0 auto;
  display: grid; grid-template-columns: 300px 1fr;
  gap: 28px; padding: 28px;
}

/* Sidebar */
.sidebar {
  position: sticky; top: 88px; align-self: start;
  max-height: calc(100vh - 110px);
  overflow-y: auto;
  background: var(--paper);
  border: 1px solid var(--page-border);
  border-radius: 18px;
  box-shadow: var(--shadow-sm);
  padding: 22px 18px;
}
.sidebar-title {
  font-family: 'Open Sans', sans-serif; font-weight: 800;
  font-size: 0.7rem; letter-spacing: 0.3em;
  color: var(--brand-dark); text-transform: uppercase;
  padding-bottom: 10px; margin-bottom: 8px;
  border-bottom: 2px solid var(--brand-gold);
}
body.dark-mode .sidebar-title { color: #e6b24a; }

.toc { list-style: none; }
.toc > li { margin-bottom: 3px; }
.toc-chapter {
  display: flex; align-items: center; gap: 10px;
  width: 100%; text-align: left;
  padding: 9px 12px; border-radius: 10px;
  background: transparent; border: none; cursor: pointer;
  font-family: 'Open Sans', sans-serif; font-size: 0.9rem; font-weight: 600;
  color: var(--text-main); transition: all .15s ease;
}
.toc-chapter:hover { background: var(--brand-mist); }
.toc-chapter.active { background: var(--brand-dark); color: #fff; }
.toc-chapter.active .ch-num { background: var(--brand-gold); color: var(--brand-ink); }
.ch-num {
  flex-shrink: 0; width: 26px; height: 26px;
  border-radius: 7px; background: var(--brand-mist);
  color: var(--brand-dark); font-weight: 700; font-size: 0.76rem;
  display: grid; place-items: center;
  transition: all .15s ease;
}
body.dark-mode .ch-num { background: #1e2b2e; color: #e6b24a; }
.ch-label { flex: 1; }
.ch-caret { font-size: 0.6rem; opacity: .5; transition: transform .2s ease; }
.toc-chapter[aria-expanded="true"] .ch-caret { transform: rotate(90deg); }

.toc-subs {
  list-style: none; padding: 3px 0 6px 40px;
  max-height: 0; overflow: hidden;
  transition: max-height .25s ease;
}
.toc-subs.open { max-height: 900px; }
.toc-subs a {
  display: block; padding: 5px 10px;
  font-size: 0.82rem; color: var(--text-muted);
  text-decoration: none; border-radius: 6px;
  border-left: 2px solid transparent;
  transition: all .12s ease;
  line-height: 1.4;
}
.toc-subs a:hover { color: var(--brand-dark); background: var(--brand-mist); border-left-color: var(--brand-gold); }
.toc-subs a.active { color: var(--brand-dark); font-weight: 600; border-left-color: var(--brand-gold); background: var(--brand-mist); }
body.dark-mode .toc-subs a:hover,
body.dark-mode .toc-subs a.active { color: #e6b24a; }

/* Pinned bookmarks (Summit-curated) — always at top of bookmark list */
#bookmarksList .bookmark-pinned a {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 10px;
  font-size: 0.82rem; font-weight: 600;
  color: var(--brand-ink) !important;
  background: linear-gradient(135deg, rgba(230,178,74,0.14) 0%, rgba(230,178,74,0.04) 100%);
  border: 1px solid rgba(230,178,74,0.35) !important;
  border-left: 3px solid var(--brand-gold) !important;
  border-radius: 8px;
  margin-bottom: 6px;
  text-decoration: none;
  transition: all 0.15s ease;
  line-height: 1.35;
}
#bookmarksList .bookmark-pinned a span { flex: 1; }
#bookmarksList .bookmark-pinned a:hover {
  background: linear-gradient(135deg, rgba(230,178,74,0.22) 0%, rgba(230,178,74,0.08) 100%);
  border-color: var(--brand-gold) !important;
  transform: translateX(2px);
}
body.dark-mode #bookmarksList .bookmark-pinned a {
  color: #f5f7f7 !important;
  background: linear-gradient(135deg, rgba(230,178,74,0.18) 0%, rgba(230,178,74,0.06) 100%);
}
#bookmarksList .bookmark-empty {
  color: var(--text-muted); font-size: .78rem;
  padding: 8px 12px; line-height: 1.5;
  font-style: italic;
}

/* Sidebar footer (quick links) */
.sidebar-footer {
  margin-top: 18px; padding-top: 16px;
  border-top: 1px dashed var(--brand-rule);
  display: flex; flex-direction: column; gap: 6px;
}
.sidebar-footer a {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 12px; font-size: 0.82rem;
  color: var(--text-muted); text-decoration: none;
  border-radius: 8px; transition: all .12s ease;
}
.sidebar-footer a:hover { background: var(--brand-mist); color: var(--brand-dark); }
.sidebar-footer a svg { width: 14px; height: 14px; flex-shrink: 0; }

/* Main */
.main {
  background: var(--paper);
  border: 1px solid var(--page-border);
  border-radius: 22px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  min-height: 80vh;
}

/* Chapter page */
.chapter-page { display: none; animation: fadeIn .25s ease; }
.chapter-page.active { display: block; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

/* ═══════════════════════════════════════════════════════════════
   HERO
   ═══════════════════════════════════════════════════════════════ */
.hero {
  background:
    radial-gradient(640px 260px at 50% -10%, rgba(255,255,255,0.08), transparent 60%),
    linear-gradient(145deg, var(--brand-dark) 0%, var(--brand-deeper) 60%, var(--brand-ink) 100%);
  color: #fff; padding: 64px 60px 54px;
  text-align: center; position: relative; overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; left: 50%; top: 0;
  transform: translateX(-50%);
  width: 100px; height: 4px; background: var(--brand-gold);
  border-bottom-left-radius: 4px; border-bottom-right-radius: 4px;
}
.hero .eyebrow {
  display: inline-block;
  font-family: 'Open Sans', sans-serif; font-size: 0.78rem; font-weight: 700;
  letter-spacing: 0.3em; text-transform: uppercase;
  color: var(--brand-gold); margin-bottom: 14px;
  text-shadow: 0 1px 2px rgba(0,0,0,0.25);
}
.hero h1 {
  font-family: 'Merriweather', Georgia, serif; font-weight: 700;
  font-size: clamp(2rem, 4.4vw, 2.9rem);
  line-height: 1.15; letter-spacing: -0.01em; margin-bottom: 14px;
  color: #fff;
}
.hero .lead {
  font-family: 'Merriweather', Georgia, serif; font-style: italic;
  font-size: 1.04rem; max-width: 720px; margin: 0 auto 28px;
  color: var(--brand-accent); line-height: 1.55;
}
.hero-meta {
  display: inline-flex; gap: 8px; flex-wrap: wrap; justify-content: center;
  font-family: 'Open Sans', sans-serif; font-size: 0.76rem; font-weight: 600;
  letter-spacing: 0.1em; text-transform: uppercase;
}
.hero-meta span {
  padding: 6px 14px; border: 1px solid rgba(230,178,74,0.5);
  border-radius: 999px; color: var(--brand-gold);
  background: rgba(230,178,74,0.08);
}

/* ═══════════════════════════════════════════════════════════════
   REGISTER BAR (home page — prominent warranty activation CTA)
   Matches style of summittractors.com/1-Reg/regbaseline.html
   ═══════════════════════════════════════════════════════════════ */
.register-bar {
  margin: 28px 44px 0;
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px; flex-wrap: wrap;
  padding: 22px 28px;
  background: linear-gradient(145deg, var(--brand-deeper) 0%, var(--brand-ink) 100%);
  color: #fff;
  border: 1px solid rgba(230,178,74,0.3);
  border-radius: 16px;
  box-shadow: var(--shadow-md);
  position: relative; overflow: hidden;
}
.register-bar::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--brand-gold) 0%, transparent 70%);
}
.register-bar::after {
  content: ""; position: absolute; right: -40px; bottom: -60px;
  width: 160px; height: 160px; border-radius: 24px;
  background: rgba(230,178,74,0.07);
  transform: rotate(25deg);
  pointer-events: none;
}
.register-bar-text { flex: 1; min-width: 240px; position: relative; z-index: 1; }
.register-eyebrow {
  font-family: 'Open Sans', sans-serif; font-size: 0.7rem;
  font-weight: 700; letter-spacing: 0.28em;
  color: var(--brand-gold); text-transform: uppercase;
  margin-bottom: 6px;
}
.register-headline {
  font-family: 'Merriweather', Georgia, serif; font-weight: 700;
  font-size: 1.25rem; color: #fff;
  line-height: 1.25; margin-bottom: 6px;
}
.register-sub {
  font-size: 0.88rem; color: rgba(255,255,255,0.8);
  line-height: 1.5;
}
.register-cta {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 14px 24px;
  background: var(--brand-gold); color: var(--brand-ink);
  font-family: 'Open Sans', sans-serif; font-size: 0.9rem; font-weight: 800;
  letter-spacing: 0.06em; text-transform: uppercase;
  text-decoration: none; border-radius: 999px;
  box-shadow: 0 6px 18px rgba(230,178,74,0.35);
  transition: all 0.2s ease;
  position: relative; z-index: 1;
}
.register-cta svg { width: 16px; height: 16px; transition: transform 0.2s ease; }
.register-cta:hover {
  background: #f0c26a; transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(230,178,74,0.5);
}
.register-cta:hover svg { transform: translateX(3px); }

/* Inline registration banner (used in Chapter 1 and Chapter 2) */
.reg-banner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 20px; flex-wrap: wrap;
  padding: 18px 22px;
  background: linear-gradient(145deg, var(--brand-dark) 0%, var(--brand-deeper) 100%);
  color: #fff;
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  position: relative; overflow: hidden;
  margin-bottom: 0;
}
.reg-banner::before {
  content: ""; position: absolute; top: 0; left: 0; bottom: 0;
  width: 4px; background: var(--brand-gold);
}
.reg-banner > div:first-child { flex: 1; min-width: 220px; }
.reg-banner-eyebrow {
  font-family: 'Open Sans', sans-serif; font-size: 0.68rem;
  font-weight: 700; letter-spacing: 0.26em;
  color: var(--brand-gold); text-transform: uppercase;
  margin-bottom: 4px;
}
.reg-banner-title {
  font-family: 'Merriweather', Georgia, serif; font-weight: 700;
  font-size: 1.05rem; color: #fff;
  line-height: 1.3; margin-bottom: 3px;
}
.reg-banner-sub {
  font-size: 0.85rem; color: rgba(255,255,255,0.78);
  line-height: 1.45;
}
.reg-banner-cta {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 11px 20px;
  background: var(--brand-gold); color: var(--brand-ink);
  font-family: 'Open Sans', sans-serif; font-size: 0.82rem; font-weight: 800;
  letter-spacing: 0.06em; text-transform: uppercase;
  text-decoration: none; border-radius: 999px;
  transition: all 0.2s ease; white-space: nowrap;
  flex-shrink: 0;
}
.reg-banner-cta svg { width: 14px; height: 14px; transition: transform 0.2s ease; }
.reg-banner-cta:hover {
  background: #f0c26a; transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(230,178,74,0.35);
}
.reg-banner-cta:hover svg { transform: translateX(3px); }

/* ═══════════════════════════════════════════════════════════════
   VIDEO CARD (YouTube walkthrough embed)
   ═══════════════════════════════════════════════════════════════ */
.video-card {
  display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 22px;
  align-items: center;
  background: linear-gradient(145deg, var(--brand-dark) 0%, var(--brand-deeper) 60%, var(--brand-ink) 100%);
  color: #fff;
  border-radius: 16px; padding: 20px;
  box-shadow: var(--shadow-md);
  margin: 1.4em 0 1.6em;
  position: relative; overflow: hidden;
}
.video-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--brand-gold);
}
.video-thumb {
  position: relative; display: block;
  aspect-ratio: 16 / 9; border-radius: 10px; overflow: hidden;
  box-shadow: 0 12px 32px rgba(0,0,0,0.4);
  transition: transform 0.2s ease;
}
.video-thumb img { display: block; width: 100%; height: 100%; object-fit: cover; }
.video-thumb:hover { transform: translateY(-2px); }
.video-thumb:hover .video-play { transform: translate(-50%, -50%) scale(1.1); background: var(--brand-gold); color: var(--brand-ink); }
.video-play {
  position: absolute; top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 68px; height: 68px; border-radius: 50%;
  background: rgba(255,255,255,0.92);
  color: var(--brand-ink);
  display: grid; place-items: center;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
  transition: all 0.2s ease;
}
.video-play svg { width: 30px; height: 30px; margin-left: 3px; }
.video-badge {
  position: absolute; bottom: 10px; left: 10px;
  background: rgba(0,0,0,0.75); color: var(--brand-gold);
  font-family: 'Open Sans', sans-serif; font-size: 0.66rem; font-weight: 700;
  letter-spacing: 0.14em; text-transform: uppercase;
  padding: 5px 10px; border-radius: 999px;
  border: 1px solid rgba(230,178,74,0.3);
}
.video-copy { padding: 6px 4px; }
.video-eyebrow {
  font-family: 'Open Sans', sans-serif; font-size: 0.7rem;
  font-weight: 700; letter-spacing: 0.28em;
  color: var(--brand-gold); text-transform: uppercase;
  margin-bottom: 8px;
}
h3.video-title,
.video-card .video-title {
  font-family: 'Merriweather', Georgia, serif; font-weight: 700;
  font-size: 1.22rem;
  color: #FFFFFF !important;
  line-height: 1.25; margin-bottom: 8px;
}
body.dark-mode h3.video-title,
body.dark-mode .video-card .video-title { color: #FFFFFF !important; }
.video-copy p { color: rgba(255,255,255,0.82); font-size: 0.9rem; margin-bottom: 14px; }
.video-copy p strong { color: #fff; }
.video-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.btn-pill-light {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 9px 16px; border-radius: 999px;
  font-family: 'Open Sans', sans-serif; font-size: 0.78rem; font-weight: 700;
  letter-spacing: 0.08em; text-transform: uppercase;
  text-decoration: none; border: 1px solid rgba(255,255,255,0.3);
  color: #fff; background: rgba(255,255,255,0.08);
  transition: all 0.15s ease; white-space: nowrap;
}
.btn-pill-light svg { width: 12px; height: 12px; }
.btn-pill-light:hover { background: rgba(255,255,255,0.18); border-color: rgba(255,255,255,0.5); }
.btn-pill-light.primary { background: var(--brand-gold); color: var(--brand-ink); border-color: var(--brand-gold); }
.btn-pill-light.primary:hover { background: #f0c26a; }

/* Quick tiles */
.quick-tiles {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 14px; padding: 28px 44px 0;
}
.tile {
  display: block; text-decoration: none; cursor: pointer;
  background: var(--surface); border: 1px solid var(--page-border);
  border-radius: 14px; padding: 18px;
  transition: all .18s ease;
  position: relative; overflow: hidden; color: inherit;
}
.tile::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0;
  width: 4px; background: var(--brand-gold); opacity: 0;
  transition: opacity .18s ease;
}
.tile:hover { transform: translateY(-2px); box-shadow: var(--shadow-sm); border-color: var(--brand-dark); }
.tile:hover::before { opacity: 1; }
.tile-icon {
  width: 42px; height: 42px; border-radius: 10px;
  background: var(--brand-mist); color: var(--brand-dark);
  display: grid; place-items: center; margin-bottom: 10px;
  font-size: 1.3rem;
}
body.dark-mode .tile-icon { background: #1e2b2e; color: #e6b24a; }
.tile-title {
  font-family: 'Merriweather', serif; font-weight: 700;
  font-size: 1rem; color: var(--brand-ink); margin-bottom: 2px;
}
body.dark-mode .tile-title { color: #e8ecec; }
.tile-desc { font-size: 0.82rem; color: var(--text-muted); line-height: 1.4; }

/* ═══════════════════════════════════════════════════════════════
   CONTENT
   ═══════════════════════════════════════════════════════════════ */
.content { padding: 36px 60px 56px; }
.content h2 {
  font-family: 'Merriweather', Georgia, serif;
  color: var(--brand-dark); font-size: 1.6rem;
  margin: 2em 0 0.7em; padding-bottom: 10px;
  line-height: 1.2; letter-spacing: -0.005em;
  position: relative; scroll-margin-top: 100px;
}
body.dark-mode .content h2 { color: #e6b24a; }
.content h2::after {
  content: ""; display: block; width: 58px; height: 3px;
  background: var(--brand-gold);
  margin-top: 10px; border-radius: 2px;
}
.content h2:first-of-type { margin-top: 0.4em; }
.content h3 {
  font-family: 'Merriweather', Georgia, serif;
  color: var(--brand-dark); font-size: 1.18rem;
  margin: 1.6em 0 0.5em; line-height: 1.3;
  scroll-margin-top: 100px;
}
body.dark-mode .content h3 { color: #e8ecec; }
.content h4 {
  font-family: 'Open Sans', sans-serif; font-size: 0.8rem;
  font-weight: 700; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--brand-dark); margin: 1.4em 0 0.5em;
}
body.dark-mode .content h4 { color: #e6b24a; }
.content p { margin-bottom: 1em; font-size: 0.97rem; color: var(--text-main); }
.content ul, .content ol { margin: 0.4em 0 1.2em 22px; }
.content li { margin-bottom: 0.45em; font-size: 0.94rem; line-height: 1.6; }
.content strong { color: var(--brand-ink); font-weight: 700; }
body.dark-mode .content strong { color: #f5f7f7; }
.content em { font-style: italic; color: var(--text-muted); }
.content dl { margin-bottom: 1.2em; }
.content dt {
  font-weight: 700; color: var(--brand-ink);
  margin-top: 0.6em; font-size: 0.95rem;
}
body.dark-mode .content dt { color: #f5f7f7; }
.content dd {
  margin-left: 0; padding-left: 16px;
  border-left: 2px solid var(--brand-rule);
  color: var(--text-main); font-size: 0.92rem;
  margin-bottom: 0.5em;
}

/* Chapter intro banner */
.chapter-intro {
  display: flex; align-items: center; gap: 18px;
  padding-bottom: 18px; margin-bottom: 26px;
  border-bottom: 1px solid var(--page-border);
}
.chapter-badge {
  flex-shrink: 0; width: 72px; height: 72px;
  border-radius: 14px;
  background: linear-gradient(145deg, var(--brand-dark), var(--brand-deeper));
  color: #fff; display: grid; place-items: center;
  box-shadow: 0 6px 18px rgba(37,74,79,0.28);
  position: relative; overflow: hidden;
}
.chapter-badge::after {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--brand-gold);
}
.chapter-badge-num {
  font-family: 'Merriweather', serif; font-weight: 700;
  font-size: 1.8rem; line-height: 1; text-align: center;
}
.chapter-badge-label {
  font-size: 0.6rem; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--brand-gold); margin-top: 2px; text-align: center;
}
.chapter-heading .eyebrow {
  font-family: 'Open Sans', sans-serif; font-size: 0.7rem;
  font-weight: 700; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--brand-gold-deeper);
}
body.dark-mode .chapter-heading .eyebrow { color: #e6b24a; }
.chapter-heading h1 {
  font-family: 'Merriweather', serif; font-weight: 700;
  font-size: 1.8rem; color: var(--brand-ink);
  line-height: 1.2; margin-top: 2px;
}
body.dark-mode .chapter-heading h1 { color: #f5f7f7; }

/* ═══════════════════════════════════════════════════════════════
   CALLOUTS (SAFETY)
   ═══════════════════════════════════════════════════════════════ */
.callout {
  border-radius: 12px; padding: 18px 22px;
  margin: 1.4em 0; border-left: 5px solid var(--brand-dark);
  background: linear-gradient(180deg, var(--surface) 0%, var(--brand-mist) 100%);
  border: 1px solid var(--brand-rule); border-left-width: 5px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.03);
}
.callout h4 {
  margin: 0 0 8px; padding-bottom: 8px;
  border-bottom: 1px solid var(--brand-rule);
  display: flex; align-items: center; gap: 8px;
  font-size: 0.82rem;
}
.callout h4::before {
  content: ""; display: inline-block; width: 18px; height: 18px;
  background: currentColor; mask-size: contain; mask-repeat: no-repeat; mask-position: center;
  -webkit-mask-size: contain; -webkit-mask-repeat: no-repeat; -webkit-mask-position: center;
  mask-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><path d='M12 2L1 21h22L12 2zm0 6l7 12H5l7-12zm-1 3v4h2v-4h-2zm0 5v2h2v-2h-2z'/></svg>");
  -webkit-mask-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><path d='M12 2L1 21h22L12 2zm0 6l7 12H5l7-12zm-1 3v4h2v-4h-2zm0 5v2h2v-2h-2z'/></svg>");
}
.callout p:last-child { margin-bottom: 0; }
.callout p { font-size: 0.94rem; }

.callout.danger { background: #fdf1f1; border-color: #f3c5c5; border-left-color: var(--danger); }
.callout.danger h4 { color: var(--danger); border-bottom-color: #f3c5c5; }
.callout.warning { background: #fef6e1; border-color: #f3d99b; border-left-color: var(--brand-gold-deeper); }
.callout.warning h4 { color: var(--brand-gold-deeper); border-bottom-color: #f3d99b; }
.callout.caution { background: #fff6e6; border-color: #f7d9a6; border-left-color: var(--caution); }
.callout.caution h4 { color: #a36510; border-bottom-color: #f7d9a6; }
.callout.important { background: var(--brand-mist); border-color: var(--brand-rule); border-left-color: var(--brand-dark); }
.callout.important h4 { color: var(--brand-dark); }
body.dark-mode .callout.important h4 { color: #e6b24a; }
.callout.note { background: var(--surface); border-color: var(--page-border); border-left-color: #9aa0a3; }
.callout.note h4 { color: #5a6468; border-bottom-color: var(--page-border); }
.callout.note h4::before { mask-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><path d='M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm1 15h-2v-6h2v6zm0-8h-2V7h2v2z'/></svg>"); -webkit-mask-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><path d='M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm1 15h-2v-6h2v6zm0-8h-2V7h2v2z'/></svg>"); }

body.dark-mode .callout.danger { background: #3a1414; border-color: #6b2020; }
body.dark-mode .callout.warning { background: #3a2e0f; border-color: #6b5416; }
body.dark-mode .callout.caution { background: #3a2a10; border-color: #6b4a1a; }

/* ═══════════════════════════════════════════════════════════════
   INFO GRID / CARDS / IMAGES
   ═══════════════════════════════════════════════════════════════ */
.info-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px; margin: 1em 0 1.2em;
}
.info-card {
  background: var(--brand-mist); border: 1px solid var(--brand-rule);
  border-radius: 10px; padding: 14px 16px;
}
.info-card .label {
  font-family: 'Open Sans', sans-serif; font-size: 0.66rem;
  font-weight: 700; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--brand-dark); margin-bottom: 4px;
}
body.dark-mode .info-card .label { color: #e6b24a; }
.info-card .value {
  font-family: 'Merriweather', serif; font-weight: 700;
  color: var(--brand-ink); font-size: 1rem;
}
body.dark-mode .info-card .value { color: #f5f7f7; }
.info-card-cta {
  display:block;
  position:relative;
  padding-right:46px;
  color:inherit;
  text-decoration:none;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease, background .18s ease;
}
.info-card-cta::after {
  content:'↗';
  position:absolute;
  right:16px;
  top:50%;
  transform:translateY(-50%);
  font-size:1.05rem;
  font-weight:800;
  color:var(--brand-dark);
  opacity:.7;
}
.info-card-cta:hover {
  transform:translateY(-2px);
  box-shadow:var(--shadow-md);
  border-color:var(--brand-gold);
  background:#fff;
}
.info-card-cta:hover::after { opacity:1; }
.info-card-value-small { font-size:.82rem !important; line-height:1.4; word-break:break-word; }
body.dark-mode .info-card-cta:hover { background:rgba(255,255,255,.06); }
body.dark-mode .info-card-cta::after { color:#e6b24a; }

/* Split layout for procedures */
.split {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 24px; margin: 1.4em 0 1.6em; align-items: start;
}
.split-text > *:first-child { margin-top: 0; }
.split-img {
  background: var(--surface); border: 1px solid var(--page-border);
  border-radius: 12px; padding: 8px; box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.split-img img { display: block; width: 100%; height: auto; border-radius: 6px; }
.split-img .caption {
  display: block; text-align: center; padding: 8px 6px 4px;
  font-size: 0.78rem; color: var(--text-muted);
  letter-spacing: 0.04em;
}

/* Card grid (for symbols, safety labels, etc.) */
.card-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 14px; margin: 1.2em 0 1.4em;
}
.card {
  background: var(--surface); border: 1px solid var(--page-border);
  border-radius: 12px; overflow: hidden; transition: all .15s ease;
  display: flex; flex-direction: column;
}
.card:hover { box-shadow: var(--shadow-sm); transform: translateY(-1px); border-color: var(--brand-dark); }
.card-visual {
  padding: 16px; background: var(--brand-mist);
  display: grid; place-items: center; aspect-ratio: 16/10;
  border-bottom: 1px solid var(--page-border);
}
.card-visual img { max-width: 100%; max-height: 90%; object-fit: contain; }
.card-visual.icon-mode img { filter: none; }
.card-visual.icon-mode.teal-style img {
  filter: brightness(0) saturate(100%) invert(25%) sepia(8%) saturate(1500%) hue-rotate(140deg);
}
body.dark-mode .card-visual img { filter: invert(1) brightness(1.2); }
body.dark-mode .card-visual.icon-mode.teal-style img {
  filter: invert(1) brightness(1.2) sepia(1) saturate(3) hue-rotate(150deg);
}
.card-body { padding: 12px 14px; }
.card-title {
  font-family: 'Open Sans', sans-serif; font-size: 0.88rem;
  font-weight: 700; color: var(--brand-ink); margin-bottom: 4px;
  line-height: 1.3;
}
body.dark-mode .card-title { color: #f5f7f7; }
.card-desc { font-size: 0.78rem; color: var(--text-muted); line-height: 1.45; }

/* Single image figure */
.figure {
  background: var(--surface); border: 1px solid var(--page-border);
  border-radius: 12px; padding: 12px;
  margin: 1.4em auto; box-shadow: var(--shadow-sm);
  max-width: 100%; overflow: hidden;
}
.figure img { display: block; width: 100%; height: auto; border-radius: 6px; }
.figure figcaption {
  display: block; text-align: center; padding: 10px 8px 4px;
  font-size: 0.82rem; color: var(--text-muted);
  letter-spacing: 0.03em;
}
.figure.narrow { max-width: 560px; }
.figure.wide { }

/* Symbol toggle */
.toggle-bar {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 12px; margin: 0.8em 0 1em;
  padding: 12px 16px; background: var(--brand-mist);
  border: 1px solid var(--brand-rule); border-radius: 10px;
}
.toggle-bar .label {
  font-size: 0.78rem; font-weight: 700; letter-spacing: 0.08em;
  color: var(--brand-dark); text-transform: uppercase;
}
body.dark-mode .toggle-bar .label { color: #e6b24a; }
.toggle-group {
  display: inline-flex; background: var(--surface);
  border: 1px solid var(--brand-rule); border-radius: 999px;
  padding: 3px;
}
.toggle-group button {
  border: none; background: transparent;
  padding: 6px 14px; border-radius: 999px;
  font-family: 'Open Sans', sans-serif; font-size: 0.78rem; font-weight: 600;
  color: var(--text-muted); cursor: pointer;
  transition: all .15s ease;
}
.toggle-group button.active {
  background: var(--brand-dark); color: #fff;
  box-shadow: 0 1px 4px rgba(0,0,0,0.15);
}
body.dark-mode .toggle-group button.active { background: #e6b24a; color: var(--brand-ink); }

/* ═══════════════════════════════════════════════════════════════
   INTERACTIVE: CLICKABLE DASHBOARD / MAP
   ═══════════════════════════════════════════════════════════════ */
.interactive-map {
  position: relative;
  background: var(--surface); border: 1px solid var(--page-border);
  border-radius: 14px; padding: 16px;
  box-shadow: var(--shadow-sm); margin: 1.4em 0;
}
.interactive-map img {
  display: block; width: 100%; height: auto; border-radius: 8px;
}
.hotspot {
  position: absolute; width: 32px; height: 32px;
  border-radius: 50%; cursor: pointer;
  background: var(--brand-gold);
  color: var(--brand-ink);
  border: 3px solid #fff;
  box-shadow: 0 0 0 2px var(--brand-gold), 0 4px 10px rgba(0,0,0,0.25);
  display: grid; place-items: center;
  font-family: 'Open Sans', sans-serif; font-weight: 800; font-size: 0.85rem;
  transition: all .18s ease;
  animation: hotspotPulse 2s infinite;
  /* Guarantee clickability & proper stacking above the image */
  z-index: 4;
  pointer-events: auto;
  user-select: none;
  -webkit-tap-highlight-color: rgba(230,178,74,0.3);
}
.hotspot:hover {
  transform: scale(1.2);
  background: var(--brand-dark); color: #fff;
  animation: none;
}
.hotspot.active {
  background: var(--brand-dark); color: #fff;
  transform: scale(1.3);
  box-shadow: 0 0 0 3px var(--brand-gold), 0 0 0 6px rgba(37,74,79,0.25), 0 4px 14px rgba(0,0,0,0.3);
  animation: none;
  z-index: 5;
}
.hotspot:focus-visible {
  outline: 3px solid var(--brand-dark);
  outline-offset: 3px;
}
@keyframes hotspotPulse {
  0%, 100% { box-shadow: 0 0 0 2px var(--brand-gold), 0 0 0 0 rgba(230,178,74,0.5), 0 4px 10px rgba(0,0,0,0.25); }
  50% { box-shadow: 0 0 0 2px var(--brand-gold), 0 0 0 10px rgba(230,178,74,0), 0 4px 10px rgba(0,0,0,0.25); }
}
.hotspot-info {
  margin-top: 18px; padding: 20px 22px;
  background: var(--brand-mist); border-radius: 10px;
  border-left: 4px solid var(--brand-gold);
  min-height: 80px;
  transition: background 0.25s ease;
  scroll-margin-top: 90px;
}
.hotspot-info.info-flash {
  animation: infoFlash 0.6s ease;
}
@keyframes infoFlash {
  0%   { background: var(--brand-gold-light, #faecc9); transform: translateY(-2px); }
  40%  { background: var(--brand-gold-light, #faecc9); }
  100% { background: var(--brand-mist); transform: translateY(0); }
}
body.dark-mode .hotspot-info.info-flash {
  animation: infoFlashDark 0.6s ease;
}
@keyframes infoFlashDark {
  0%   { background: rgba(230,178,74,0.25); transform: translateY(-2px); }
  40%  { background: rgba(230,178,74,0.25); }
  100% { background: var(--brand-mist); transform: translateY(0); }
}
.hotspot-info h4 {
  font-family: 'Merriweather', serif; font-weight: 700;
  color: var(--brand-ink); font-size: 1.02rem;
  margin-bottom: 6px; letter-spacing: 0;
  text-transform: none;
}
.hotspot-info h4::before { display: none; }
body.dark-mode .hotspot-info h4 { color: #f5f7f7; }
.hotspot-info p { margin: 0; font-size: 0.92rem; color: var(--text-main); }
.hotspot-info .placeholder { color: var(--text-muted); font-style: italic; }

/* ═══════════════════════════════════════════════════════════════
   TABLES
   ═══════════════════════════════════════════════════════════════ */
.content table {
  width: 100%; border-collapse: collapse;
  margin: 1.4em 0; font-size: 0.9rem;
  background: var(--surface); border: 1px solid var(--page-border);
  border-radius: 10px; overflow: hidden;
}
.content thead {
  background: linear-gradient(180deg, var(--brand-dark), var(--brand-deeper));
  color: #fff;
}
.content thead th,
.content table thead th {
  color: #FFFFFF !important;
  text-shadow: 0 1px 0 rgba(0,0,0,0.12);
}
.content th {
  padding: 10px 14px; text-align: left;
  font-family: 'Open Sans', sans-serif;
  font-size: 0.76rem; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase;
}
.content td {
  padding: 10px 14px;
  border-top: 1px solid var(--page-border);
  vertical-align: top;
}
.content tbody tr:nth-child(even) { background: var(--brand-mist); }
.content tbody tr:hover { background: var(--brand-accent); }
body.dark-mode .content tbody tr:hover { background: #1e2b2e; }
.content td strong { color: var(--brand-ink); }

/* ═══════════════════════════════════════════════════════════════
   REGISTRATION FORM / BOOKMARK BADGE
   ═══════════════════════════════════════════════════════════════ */
.reg-form {
  background: var(--brand-mist);
  border: 1px solid var(--brand-rule);
  border-left: 4px solid var(--brand-gold);
  border-radius: 12px;
  padding: 20px; margin: 1.2em 0;
}
.reg-form .hint {
  font-size: 0.82rem; color: var(--text-muted);
  margin-bottom: 14px;
}
.reg-fields {
  display: grid; gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}
.reg-fields label {
  display: block; font-size: 0.72rem; font-weight: 700;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--brand-dark); margin-bottom: 4px;
}
body.dark-mode .reg-fields label { color: #e6b24a; }
.reg-fields input {
  width: 100%; padding: 10px 12px;
  border: 1px solid var(--page-border);
  border-radius: 8px; background: var(--surface);
  color: var(--text-main);
  font-family: 'Open Sans', sans-serif; font-size: 0.94rem;
}
.reg-fields input:focus { outline: none; border-color: var(--brand-dark); box-shadow: 0 0 0 3px rgba(37,74,79,0.12); }
.reg-actions { margin-top: 14px; display: flex; gap: 8px; align-items: center; }
.btn {
  padding: 9px 18px; border-radius: 8px; border: none; cursor: pointer;
  font-family: 'Open Sans', sans-serif; font-size: 0.82rem; font-weight: 700;
  letter-spacing: 0.08em; text-transform: uppercase;
  transition: all .15s ease;
}
.btn-primary { background: var(--brand-dark); color: #fff; }
.btn-primary:hover { background: var(--brand-ink); }
body.dark-mode .btn-primary { background: #e6b24a; color: var(--brand-ink); }
.btn-secondary { background: var(--surface); color: var(--brand-dark); border: 1px solid var(--brand-rule); }
.btn-secondary:hover { background: var(--brand-mist); }
.reg-status { font-size: 0.82rem; color: #16a34a; font-weight: 600; }

/* Bookmark button */
.bookmark-btn {
  position: sticky; top: 100px; float: right;
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--surface); border: 1px solid var(--page-border);
  cursor: pointer; display: grid; place-items: center;
  box-shadow: var(--shadow-sm);
  z-index: 10;
}
.bookmark-btn svg { width: 18px; height: 18px; fill: none; stroke: var(--brand-dark); stroke-width: 2; }
.bookmark-btn.active svg { fill: var(--brand-gold); stroke: var(--brand-gold-deeper); }

/* ═══════════════════════════════════════════════════════════════
   PREV/NEXT NAV, HOME CARDS
   ═══════════════════════════════════════════════════════════════ */
.section-nav {
  display: flex; justify-content: space-between; gap: 14px;
  margin-top: 56px; padding-top: 24px;
  border-top: 1px solid var(--page-border);
}
.section-nav a {
  flex: 1; max-width: 48%;
  display: block; text-decoration: none;
  padding: 14px 18px; border-radius: 12px;
  background: var(--brand-mist); border: 1px solid var(--brand-rule);
  transition: all .18s ease;
}
.section-nav a:hover { background: var(--brand-dark); color: #fff; border-color: var(--brand-dark); }
.section-nav a:hover .sn-label, .section-nav a:hover .sn-title { color: inherit; }
.section-nav .sn-label {
  font-size: 0.7rem; letter-spacing: 0.2em; text-transform: uppercase;
  font-weight: 700; color: var(--brand-gold-deeper);
}
.section-nav .sn-title {
  font-family: 'Merriweather', serif; font-weight: 700;
  font-size: 0.96rem; color: var(--brand-ink); margin-top: 4px;
}
body.dark-mode .section-nav .sn-title { color: #f5f7f7; }
.section-nav a.next { text-align: right; }

/* Home chapter grid */
.home-grid { padding: 36px 44px; }
.home-grid h2 {
  font-family: 'Merriweather', serif; color: var(--brand-dark);
  font-size: 1.35rem; margin: 32px 0 16px; padding-bottom: 10px;
  border-bottom: 1px solid var(--page-border);
}
body.dark-mode .home-grid h2 { color: #e6b24a; }
.home-grid h2:first-child { margin-top: 0; }

.chapter-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 14px;
}
.chapter-card {
  text-decoration: none; color: inherit; display: block;
  background: var(--surface); border: 1px solid var(--page-border);
  border-radius: 14px; padding: 20px;
  transition: all .18s ease; position: relative; overflow: hidden;
  cursor: pointer;
}
.chapter-card::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0;
  width: 4px; background: var(--brand-dark);
}
.chapter-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); border-color: var(--brand-dark); }
.chapter-card:hover::before { background: var(--brand-gold); }
.chapter-card .cc-num {
  display: inline-block; font-family: 'Merriweather', serif;
  font-weight: 700; font-size: 0.72rem; color: var(--brand-gold-deeper);
  letter-spacing: 0.2em; text-transform: uppercase; margin-bottom: 6px;
}
.chapter-card .cc-title {
  font-family: 'Merriweather', serif; font-weight: 700;
  font-size: 1.05rem; color: var(--brand-ink); margin-bottom: 6px;
}
body.dark-mode .chapter-card .cc-title { color: #f5f7f7; }
.chapter-card .cc-desc { font-size: 0.86rem; color: var(--text-muted); line-height: 1.5; }

/* CTA bar */
.cta-bar {
  background: linear-gradient(145deg, var(--brand-dark), var(--brand-deeper));
  color: #fff; border-radius: 16px; padding: 24px 28px;
  margin: 28px 0; display: flex; align-items: center;
  gap: 20px; flex-wrap: wrap; justify-content: space-between;
  box-shadow: var(--shadow-md); position: relative; overflow: hidden;
}
.cta-bar::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--brand-gold);
}
.cta-bar .cta-text h3 {
  font-family: 'Merriweather', serif; font-size: 1.15rem;
  color: #fff; margin-bottom: 4px;
}
.cta-bar .cta-text p { font-size: 0.88rem; color: rgba(255,255,255,0.8); margin: 0; }
.cta-bar .cta-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.cta-bar .btn-pill { padding: 10px 18px; font-size: 0.82rem; }

/* ═══════════════════════════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════════════════════════ */
.footer {
  background: var(--brand-ink); color: rgba(255,255,255,0.8);
  padding: 28px 60px; border-top: 3px solid var(--brand-gold);
  font-size: 0.82rem; text-align: center;
}
.footer strong { color: var(--brand-gold); font-weight: 700; letter-spacing: 0.08em; }
.footer a { color: var(--brand-gold); text-decoration: none; }
.footer a:hover { text-decoration: underline; }
.footer .meta {
  margin-top: 8px; font-size: 0.76rem; color: rgba(255,255,255,0.5);
  letter-spacing: 0.06em;
}

/* Search-match flash */
.highlight-flash { animation: flashHighlight 1.6s ease; }
@keyframes flashHighlight {
  0% { background: rgba(230,178,74,0.35); }
  100% { background: transparent; }
}

/* ═══════════════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════════════ */
@media (max-width: 960px) {
  .layout { grid-template-columns: 1fr; padding: 14px; gap: 16px; }
  .sidebar { position: static; max-height: none; }
  .topbar-inner { grid-template-columns: auto auto; gap: 10px; padding: 10px 14px; }
  .search-wrap { grid-column: 1 / -1; order: 3; }
  .topbar-actions .btn-pill { display: none; }
  .hero { padding: 44px 22px 36px; }
  .content { padding: 28px 22px 40px; }
  .home-grid { padding: 28px 18px; }
  .quick-tiles { padding: 22px 22px 0; }
  .register-bar { margin: 20px 22px 0; padding: 18px 20px; }
  .register-headline { font-size: 1.05rem; }
  .register-cta { padding: 12px 20px; font-size: 0.82rem; }
  .reg-banner { padding: 16px 18px; }
  .reg-banner-cta { padding: 10px 16px; font-size: 0.78rem; }
  .video-card { grid-template-columns: 1fr; padding: 16px; }
  .video-title { font-size: 1.05rem; }
  .footer { padding: 24px; }
  .split { grid-template-columns: 1fr; }
  .brand-text .line2 { font-size: 0.82rem; }
  .brand-logo { height: 40px; }
  .brand-logo img { max-width: 130px; }
  .brand-divider { height: 28px; }
}

/* Print */
@media print {
  .topbar, .sidebar, .quick-tiles, .section-nav, .cta-bar, .bookmark-btn, .toggle-bar { display: none; }
  .layout { grid-template-columns: 1fr; padding: 0; gap: 0; }
  .main { box-shadow: none; border: none; border-radius: 0; }
  .chapter-page { display: block !important; page-break-before: always; }
  .chapter-page:first-of-type { page-break-before: auto; }
  .hero { background: white !important; color: black !important; }
  .hero h1, .hero .eyebrow, .hero .lead { color: black !important; }
}


/* ═══════════════════════════════════════════════════════════════
   PARTS & DIAGRAMS EXPERIENCE
   ═══════════════════════════════════════════════════════════════ */
.tile-parts { border: 1px solid rgba(230,178,74,.28); }
.parts-stats { justify-content: flex-end; }
.parts-stats span {
  background:#fffaf3;
  border-color:rgba(230,178,74,.7);
  color:#b07a13;
  font-weight:800;
  box-shadow:0 1px 0 rgba(37,74,79,.04);
}
.parts-hero-card {
  display:grid; grid-template-columns:1.6fr 1fr; gap:22px; align-items:center;
  background:linear-gradient(135deg, rgba(37,74,79,.08), rgba(230,178,74,.12));
  border:1px solid rgba(37,74,79,.12); border-radius:18px; padding:22px; margin:8px 0 26px;
}
.parts-hero-actions { display:flex; gap:10px; flex-wrap:wrap; justify-content:flex-end; }
.parts-hero-actions .btn-pill,
.parts-detail-panel .btn-pill,
.parts-basket-panel .btn-pill {
  background:#fff;
  color:var(--brand-dark);
  border-color:rgba(37,74,79,.18);
  box-shadow:var(--shadow-sm);
}
.parts-hero-actions .btn-pill:hover,
.parts-detail-panel .btn-pill:hover,
.parts-basket-panel .btn-pill:hover {
  background:#f7faf9;
  color:var(--brand-dark);
  border-color:rgba(37,74,79,.3);
}
.parts-hero-actions .btn-pill.primary {
  background:var(--brand-gold);
  color:var(--brand-ink);
  border-color:var(--brand-gold);
}
.parts-hero-actions .btn-pill.primary:hover {
  background:#f0c26a;
  color:var(--brand-ink);
  border-color:#f0c26a;
}
.parts-curated-groups { display:grid; gap:18px; margin:18px 0 28px; }
.parts-group { background:var(--paper); border:1px solid var(--page-border); border-radius:18px; padding:18px; box-shadow:var(--shadow-sm); }
.parts-group h3 { margin-bottom:12px; }
.parts-group-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(220px,1fr)); gap:12px; }
.parts-curated-card, .parts-assembly-card, .parts-mini-card, .parts-page-chip {
  border:none; cursor:pointer; text-align:left; transition:transform .15s ease, box-shadow .15s ease, background .15s ease;
}
.parts-curated-card {
  background:linear-gradient(180deg, rgba(37,74,79,.06), rgba(255,255,255,.55));
  border:1px solid rgba(37,74,79,.12); border-radius:14px; padding:14px;
}
.parts-curated-card:hover, .parts-assembly-card:hover, .parts-mini-card:hover { transform:translateY(-1px); box-shadow:var(--shadow-sm); }
.parts-curated-card.active, .parts-assembly-card.active, .parts-mini-card.active {
  background:var(--brand-dark); color:#fff; border-color:var(--brand-dark);
}
.parts-curated-code, .parts-assembly-code, .parts-detail-code {
  display:inline-flex; align-items:center; gap:8px; font-size:.78rem; font-weight:800; letter-spacing:.12em; text-transform:uppercase; color:var(--brand-dark);
}
.parts-curated-card.active .parts-curated-code, .parts-assembly-card.active .parts-assembly-code, .parts-mini-card.active, body.dark-mode .parts-detail-code { color:var(--brand-gold); }
.parts-curated-title, .parts-assembly-title { font-family:'Merriweather', Georgia, serif; font-size:1rem; font-weight:700; color:var(--brand-ink); margin:6px 0; }
.parts-curated-meta, .parts-assembly-meta, .parts-result-meta, .parts-items-meta { color:var(--text-muted); font-size:.86rem; }
.parts-curated-card.active .parts-curated-title,
.parts-assembly-card.active .parts-assembly-title,
.parts-mini-card.active .parts-mini-title {
  color:#fff;
}
.parts-curated-card.active .parts-curated-meta,
.parts-assembly-card.active .parts-assembly-meta,
.parts-mini-card.active .parts-mini-meta,
.parts-curated-card.active .parts-assembly-count,
.parts-assembly-card.active .parts-assembly-count {
  color:rgba(255,255,255,.84);
}
.parts-browser-shell { display:grid; grid-template-columns:minmax(240px, 320px) minmax(0, 1fr); gap:16px; align-items:start; }
.parts-browser-panel, .parts-detail-panel { min-width:0; }
.parts-browser-panel, .parts-detail-panel {
  background:var(--paper); border:1px solid var(--page-border); border-radius:18px; box-shadow:var(--shadow-sm); padding:18px;
}
.parts-search-label { display:block; font-weight:700; margin-bottom:8px; }
.parts-search-input {
  width:100%; border-radius:12px; border:1px solid var(--page-border); padding:12px 14px; font-size:.95rem; margin-bottom:10px; background:var(--surface-soft); color:var(--text-main);
}
.parts-assembly-list { display:grid; gap:10px; max-height:72vh; overflow:auto; padding-right:2px; }
.parts-assembly-card { background:var(--surface-soft); border:1px solid var(--page-border); border-radius:14px; padding:14px; }
.parts-assembly-top { display:flex; justify-content:space-between; gap:8px; align-items:center; }
.parts-assembly-count { font-size:.78rem; color:var(--text-muted); }
.parts-detail-empty { min-height:280px; display:grid; place-items:center; text-align:center; color:var(--text-muted); }
.parts-detail-head { display:flex; justify-content:space-between; gap:16px; align-items:flex-start; margin-bottom:12px; }
.parts-page-chips { display:flex; flex-wrap:wrap; gap:8px; margin-bottom:14px; }
.parts-page-chip { padding:8px 12px; border-radius:999px; background:var(--surface-soft); border:1px solid var(--page-border); color:var(--text-main); }
.parts-page-chip.active { background:var(--brand-gold); color:var(--brand-ink); border-color:var(--brand-gold); }
.parts-diagram-frame {
  background:linear-gradient(180deg, rgba(37,74,79,.06), rgba(37,74,79,.02)); border:1px solid var(--page-border); border-radius:18px; padding:14px; margin-bottom:16px;
}
.parts-diagram-frame img { width:100%; height:auto; display:block; border-radius:10px; }
.parts-diagram-fallback { padding:18px; color:var(--text-muted); text-align:center; font-style:italic; }
.parts-diagram-pdf-embed[hidden],
.parts-diagram-modal-pdf[hidden] { display:none !important; }
.parts-diagram-pdf-embed {
  margin-top:12px;
  border:1px solid var(--page-border);
  border-radius:14px;
  overflow:hidden;
  background:#fff;
}
.parts-diagram-pdf-embed iframe {
  width:100%;
  min-height:780px;
  border:none;
  display:block;
  background:#fff;
}
.parts-diagram-pdf-note {
  padding:10px 14px;
  border-top:1px solid var(--page-border);
  color:var(--text-muted);
  font-size:.82rem;
  background:rgba(37,74,79,.03);
}
.parts-diagram-modal-pdf {
  width:100%;
  min-height:min(82vh, 1000px);
  border:1px solid var(--page-border);
  border-radius:14px;
  overflow:hidden;
  background:#fff;
}
.parts-diagram-modal-pdf iframe {
  width:100%;
  min-height:min(82vh, 1000px);
  border:none;
  display:block;
  background:#fff;
}
body.dark-mode .parts-diagram-pdf-embed,
body.dark-mode .parts-diagram-modal-pdf { background:#fff; }
body.dark-mode .parts-diagram-pdf-note {
  background:rgba(255,255,255,.04);
  color:rgba(255,255,255,.78);
}
@media (max-width: 900px) {
  .parts-diagram-pdf-embed iframe,
  .parts-diagram-modal-pdf iframe { min-height:68vh; }
}
@media print {
  .parts-diagram-pdf-note { display:none; }
}
.parts-detail-grid { display:grid; grid-template-columns:1.15fr .85fr; gap:14px; margin-bottom:14px; }
.parts-card { background:var(--surface-soft); border:1px solid var(--page-border); border-radius:14px; padding:14px; }
.parts-table-wrap { overflow-x:visible; overflow-y:visible; max-width:100%; border:1px solid var(--page-border); border-radius:14px; }
.parts-table { width:100%; max-width:100%; border-collapse:collapse; min-width:0; table-layout:fixed; }
.parts-table th, .parts-table td { padding:9px 8px; border-bottom:1px solid var(--page-border); text-align:left; vertical-align:top; overflow-wrap:anywhere; word-break:normal; }
.parts-table td { font-size:.88rem; }
.parts-table th { background:rgba(37,74,79,.06); font-size:.68rem; letter-spacing:.04em; text-transform:uppercase; }
.parts-table th:nth-child(1), .parts-table td:nth-child(1) { width:22%; }
.parts-table th:nth-child(2), .parts-table td:nth-child(2) { width:34%; }
.parts-table th:nth-child(3), .parts-table td:nth-child(3) {
  width:8%; min-width:54px; text-align:center; white-space:nowrap;
}
.parts-table th:nth-child(4), .parts-table td:nth-child(4),
.parts-table th:nth-child(5), .parts-table td:nth-child(5) {
  width:10%; min-width:88px; text-align:right; white-space:nowrap;
}
.parts-table th:nth-child(6), .parts-table td:nth-child(6) {
  width:16%; min-width:0; text-align:center; white-space:normal;
}
.parts-table th:nth-child(3) { padding-right:10px; }
.parts-table th:nth-child(4), .parts-table td:nth-child(4),
.parts-table th:nth-child(5), .parts-table td:nth-child(5) { padding-left:10px; padding-right:10px; }
.parts-table th:nth-child(6), .parts-table td:nth-child(6) { padding-left:14px; padding-right:10px; }
.parts-table td:nth-child(1) code { white-space:nowrap; font-size:.82rem; }
.parts-table td:nth-child(2) { white-space:normal; }
.parts-table tbody tr:hover { background:rgba(230,178,74,.08); }

.parts-row-in-basket { background:rgba(230,178,74,.08); }
.parts-row-in-basket td { padding-top:11px; padding-bottom:11px; }
.parts-row-admin-selected { box-shadow:inset 0 0 0 2px rgba(37,74,79,.34); }
.parts-money-cell { font-variant-numeric:tabular-nums; color:var(--brand-dark); font-weight:700; }
.parts-action-cell {
  width:100%; text-align:center; display:flex; flex-direction:column; justify-content:flex-start; align-items:center; gap:6px; overflow:visible; min-width:0;
}
.parts-add-btn {
  display:inline-flex; align-items:center; justify-content:center; width:100%; min-width:0; max-width:104px; margin:0 auto;
  border:1px solid rgba(37,74,79,.18); background:#fff; color:var(--brand-dark); border-radius:999px; padding:6px 8px; font-weight:800; font-size:.76rem; line-height:1.1; cursor:pointer; white-space:nowrap;
}
.parts-add-btn:hover { transform:translateY(-1px); box-shadow:var(--shadow-sm); }
.parts-add-btn.is-added { background:#254A4F; border-color:#254A4F; color:#fff; }

.parts-qty-stepper {
  display:grid; grid-template-columns:24px minmax(18px,1fr) 24px; align-items:center; gap:3px; width:100%; min-width:0; max-width:104px;
  margin:0 auto; padding:2px; border:1px solid rgba(37,74,79,.18); border-radius:999px; background:#fff;
}
.parts-qty-btn { width:22px; height:22px; border-radius:999px; border:1px solid rgba(37,74,79,.14); background:#fff; color:var(--brand-dark); font-size:.84rem; font-weight:800; line-height:1; cursor:pointer; padding:0; }
.parts-qty-btn:hover { transform:translateY(-1px); box-shadow:var(--shadow-sm); }
.parts-qty-value { min-width:0; text-align:center; font-weight:800; font-size:.8rem; color:var(--brand-dark); }
body.dark-mode .parts-qty-stepper { background:rgba(255,255,255,.05); border-color:rgba(255,255,255,.14); }
body.dark-mode .parts-qty-btn { background:rgba(255,255,255,.04); color:#f5f7f7; border-color:rgba(255,255,255,.14); }
body.dark-mode .parts-qty-value { color:#f5f7f7; }

.parts-basket-panel {
  background:var(--paper); border:1px solid var(--page-border); border-radius:18px; box-shadow:var(--shadow-sm); padding:20px; margin:22px 0 24px;
}
.parts-basket-head { display:flex; flex-wrap:wrap; justify-content:space-between; gap:18px; align-items:flex-start; margin-bottom:14px; }
.parts-basket-head h3 { margin:4px 0 8px; }
.parts-basket-head p { margin:0; max-width:56rem; color:var(--text-muted); }
.parts-basket-actions { display:flex; flex-wrap:wrap; gap:10px; }
.parts-basket-summary { display:flex; flex-wrap:wrap; gap:12px; align-items:stretch; margin-bottom:16px; }
.parts-basket-stat, .parts-basket-save {
  background:var(--surface-soft); border:1px solid var(--page-border); border-radius:14px; padding:12px 14px; min-width:130px;
}
.parts-basket-stat strong { display:block; font-family:'Merriweather', Georgia, serif; font-size:1.1rem; color:var(--brand-dark); }
.parts-basket-stat span, .parts-basket-save { color:var(--text-muted); font-size:.86rem; }
.parts-basket-save { display:flex; align-items:center; min-width:220px; }
.parts-basket-form { display:grid; grid-template-columns:repeat(2, minmax(0, 1fr)); gap:12px; margin-bottom:16px; }
.parts-basket-field { display:grid; gap:6px; font-weight:700; }
.parts-basket-field span { font-size:.88rem; color:var(--brand-dark); }
.parts-basket-field input, .parts-basket-field textarea {
  width:100%; border-radius:12px; border:1px solid var(--page-border); padding:11px 12px; font-size:.95rem; background:var(--surface-soft); color:var(--text-main); font-family:inherit;
}
.parts-basket-field textarea { resize:vertical; min-height:86px; }
.parts-basket-field-wide { grid-column:1 / -1; }
.parts-basket-empty {
  background:linear-gradient(180deg, rgba(37,74,79,.04), rgba(37,74,79,.02)); border:1px dashed rgba(37,74,79,.24); border-radius:16px; padding:18px; color:var(--text-muted);
}
.parts-basket-items { display:grid; gap:12px; }
.parts-basket-item { background:var(--surface-soft); border:1px solid var(--page-border); border-radius:16px; padding:14px; }
.parts-basket-item-head { display:flex; flex-wrap:wrap; justify-content:space-between; gap:10px; align-items:flex-start; margin-bottom:6px; }
.parts-basket-item-title { font-family:'Merriweather', Georgia, serif; font-size:1rem; color:var(--brand-ink); margin:0; }
.parts-basket-item-meta { color:var(--text-muted); font-size:.88rem; margin-bottom:12px; }
.parts-basket-remove { border:none; background:transparent; color:#9c2b2e; font-weight:800; cursor:pointer; padding:0; }
.parts-basket-item-grid { display:grid; grid-template-columns:repeat(4, minmax(0, 1fr)); gap:10px; }
.parts-basket-item-grid .parts-basket-field { margin:0; }
.parts-basket-item-total {
  display:flex; align-items:center; justify-content:flex-start; padding:11px 12px; border:1px solid var(--page-border); border-radius:12px; background:#fff; font-weight:800; color:var(--brand-dark); min-height:46px;
}
.parts-basket-item-note { margin-top:10px; }
body.dark-mode .parts-add-btn { background:rgba(255,255,255,.04); color:#f5f7f7; border-color:rgba(255,255,255,.14); }
body.dark-mode .parts-basket-panel, body.dark-mode .parts-basket-stat, body.dark-mode .parts-basket-save, body.dark-mode .parts-basket-item, body.dark-mode .parts-basket-empty { background:rgba(255,255,255,.03); }
body.dark-mode .parts-basket-item-total { background:rgba(255,255,255,.04); color:#f5f7f7; }
@media (max-width: 1280px) {
  .parts-browser-shell { grid-template-columns:minmax(220px, 288px) minmax(0, 1fr); }
  .parts-table td { font-size:.84rem; }
  .parts-table td:nth-child(1) code { font-size:.78rem; }
  .parts-add-btn, .parts-qty-stepper { max-width:98px; }
}
@media (max-width: 1100px) {
  .parts-table td { font-size:.82rem; }
  .parts-table th:nth-child(4), .parts-table td:nth-child(4),
  .parts-table th:nth-child(5), .parts-table td:nth-child(5) { width:11%; }
  .parts-table th:nth-child(6), .parts-table td:nth-child(6) { width:18%; }
  .parts-add-btn, .parts-qty-stepper { max-width:94px; }
}
@media (max-width: 960px) {
  .parts-basket-form, .parts-basket-item-grid { grid-template-columns:1fr; }
  .parts-table-wrap { border:none; overflow:visible; }
  .parts-table { border-collapse:separate; border-spacing:0 10px; table-layout:auto; }
  .parts-table thead, .parts-table thead tr, .parts-table thead th { display:none; }
  .parts-table, .parts-table tbody { display:block; }
  .parts-table tbody tr {
    display:grid; grid-template-columns:repeat(2, minmax(0, 1fr)); grid-template-areas:'part page' 'desc desc' 'retail dealer' 'action action';
    gap:10px 12px; padding:12px; margin:0 0 10px; border:1px solid var(--page-border); border-radius:14px; background:#fff;
  }
  .parts-table td {
    display:block; width:100%; padding:0; border:none; font-size:.86rem;
  }
  .parts-table td::before {
    content:attr(data-label); display:block; margin-bottom:4px; font-size:.64rem; font-weight:800; letter-spacing:.06em; text-transform:uppercase; color:var(--text-muted);
  }
  .parts-table td:nth-child(1) { grid-area:part; }
  .parts-table td:nth-child(2) { grid-area:desc; }
  .parts-table td:nth-child(3) { grid-area:page; text-align:left; }
  .parts-table td:nth-child(4) { grid-area:retail; text-align:left; }
  .parts-table td:nth-child(5) { grid-area:dealer; text-align:left; }
  .parts-table td:nth-child(6) { grid-area:action; text-align:left; }
  .parts-action-cell { justify-content:flex-start; align-items:stretch; }
  .parts-add-btn, .parts-qty-stepper { max-width:none; width:100%; }
  .parts-qty-stepper { grid-template-columns:28px minmax(18px,1fr) 28px; }
  body.dark-mode .parts-table tbody tr { background:rgba(255,255,255,.03); }
}
@media (max-width: 640px) {
  .parts-table tbody tr {
    grid-template-columns:1fr; grid-template-areas:'part' 'desc' 'page' 'retail' 'dealer' 'action';
  }
  .parts-table td { font-size:.84rem; }
  .parts-add-btn, .parts-qty-stepper { max-width:160px; }
}
#partsBasketPanel { scroll-margin-top: 96px; }
.parts-admin-shell[hidden] { display:none !important; }
.parts-admin-shell {
  position:fixed; inset:0; z-index:1200; display:grid; place-items:center; padding:24px;
}
.parts-admin-backdrop {
  position:absolute; inset:0; background:rgba(16,24,26,.58); backdrop-filter:blur(4px);
}
.parts-admin-panel {
  position:relative; width:min(980px, 100%); max-height:min(88vh, 920px); overflow:auto; background:var(--paper); border:1px solid rgba(37,74,79,.18); border-radius:22px; box-shadow:0 28px 60px rgba(0,0,0,.22); padding:22px;
}
.parts-admin-head { display:flex; justify-content:space-between; gap:18px; align-items:flex-start; margin-bottom:16px; }
.parts-admin-head p, .parts-admin-copy { margin:6px 0 0; color:var(--text-muted); }
.parts-admin-grid { display:grid; grid-template-columns:1fr 1.2fr; gap:16px; }
.parts-admin-card {
  background:var(--surface-soft); border:1px solid var(--page-border); border-radius:16px; padding:16px;
}
.parts-admin-actions { display:flex; flex-wrap:wrap; gap:10px; margin-top:14px; }
.parts-admin-status, .parts-admin-selection {
  margin-top:12px; padding:12px 14px; border-radius:12px; background:#fff; border:1px solid var(--page-border); color:var(--brand-dark); font-size:.9rem;
}
.parts-admin-form-grid { display:grid; grid-template-columns:repeat(2, minmax(0, 1fr)); gap:12px; margin-top:12px; }
.parts-admin-upload input { background:#fff; }
.parts-admin-upload-stack { display:grid; gap:12px; }
.parts-admin-helper { font-size:.82rem; line-height:1.5; margin-top:10px; }
body.parts-admin-open { overflow:hidden; }
body.dark-mode .parts-admin-panel,
body.dark-mode .parts-admin-card,
body.dark-mode .parts-admin-status,
body.dark-mode .parts-admin-selection { background:rgba(255,255,255,.04); }
@media (max-width: 960px) {
  .parts-admin-shell { padding:14px; }
  .parts-admin-grid, .parts-admin-form-grid { grid-template-columns:1fr; }
  .parts-admin-head { flex-direction:column; }
}
.parts-callout {
  background:linear-gradient(135deg, rgba(37,74,79,.06), rgba(230,178,74,.14));
  border:1px solid rgba(37,74,79,.12); border-radius:18px; padding:18px; margin:14px 0 18px;
}
.parts-callout.compact { margin-top:10px; }
.parts-callout-head { display:flex; justify-content:space-between; gap:18px; align-items:flex-start; }
.parts-callout-head h3 { margin-bottom:6px; }
.parts-mini-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(150px,1fr)); gap:10px; margin-top:14px; }
.parts-mini-card {
  padding:12px 14px; border-radius:12px; background:rgba(255,255,255,.75); border:1px solid rgba(37,74,79,.12); font-weight:800; color:var(--brand-ink);
}
body.dark-mode .parts-curated-card,
body.dark-mode .parts-browser-panel,
body.dark-mode .parts-detail-panel,
body.dark-mode .parts-group,
body.dark-mode .parts-card,
body.dark-mode .parts-assembly-card,
body.dark-mode .parts-page-chip,
body.dark-mode .parts-mini-card,
body.dark-mode .parts-table th,
body.dark-mode .parts-diagram-frame,
body.dark-mode .parts-hero-card,
body.dark-mode .parts-callout { background:rgba(255,255,255,.03); }
@media (max-width: 1100px) {
  .parts-browser-shell, .parts-detail-grid, .parts-hero-card { grid-template-columns:1fr; }
  .parts-detail-head, .parts-callout-head { flex-direction:column; }
}
@media (max-width: 760px) {
  .parts-group-grid, .parts-mini-grid { grid-template-columns:1fr; }
  .parts-browser-panel { order:2; }
  .parts-detail-panel { order:1; }
}


/* ═══════════════════════════════════════════════════════════════
   GX54 BRAND CONFORMITY + WORKSPACE SHELL
   ═══════════════════════════════════════════════════════════════ */
:root {
  --brand-dark: #1E4348;
  --brand-deeper: #0A181B;
  --brand-ink: #081113;
  --brand-mist: #E4EBE8;
  --brand-accent: #eff4f2;
  --brand-rule: rgba(30,67,72,.18);
  --brand-gold: #C9922E;
  --brand-gold-deeper: #8B611D;
  --brand-gold-light: #F2E1C0;
  --brand-cyan: #C9922E;
  --text-main: #081113;
  --text-muted: #4F6164;
  --text-faint: #708285;
  --paper: #ffffff;
  --surface: #ffffff;
  --page-border: rgba(30,67,72,.14);
  --shadow-sm: 0 2px 6px rgba(0,0,0,0.08);
  --shadow-md: 0 8px 26px rgba(0,0,0,0.12);
  --shadow-lg: 0 16px 44px rgba(13,31,34,0.25);
}
body.dark-mode {
  --paper: #0d1719;
  --surface: #112024;
  --brand-mist: #142225;
  --brand-accent: #16282c;
  --page-border: rgba(201,146,46,.22);
  --text-main: #eef4f2;
  --text-muted: #aac1c0;
  --text-faint: #78908f;
  --brand-dark: #2d666d;
  --brand-deeper: #081113;
  --brand-ink: #081113;
}
html {
  background:
    radial-gradient(1200px 640px at 50% -60px, rgba(201,146,46,.12), transparent 65%),
    linear-gradient(180deg, #eef3f0 0%, #dde7e4 100%);
}
body.dark-mode, html:has(body.dark-mode) {
  background:
    radial-gradient(1200px 640px at 50% -60px, rgba(201,146,46,.14), transparent 65%),
    linear-gradient(180deg, #081113 0%, #0d1719 100%);
}
.topbar {
  background:
    radial-gradient(ellipse 60% 80% at 18% 6%, rgba(201,146,46,.18), transparent 58%),
    radial-gradient(ellipse 55% 70% at 100% 100%, rgba(30,67,72,.7), transparent 60%),
    linear-gradient(180deg, var(--brand-deeper) 0%, #122A2E 54%, var(--brand-ink) 100%);
  border-bottom: 2px solid var(--brand-cyan);
  box-shadow: 0 8px 20px rgba(8,17,19,.28);
}
.topbar-inner {
  max-width: 1440px;
  grid-template-columns: auto minmax(320px, 1fr) auto;
  gap: 18px;
  padding: 14px 24px;
}
.topbar-leading { display:flex; align-items:center; gap:16px; min-width:0; }
.brand-lockup { gap: 16px; }
.brand-divider {
  height: 38px;
  background: linear-gradient(180deg, transparent 0%, rgba(201,146,46,.72) 18%, rgba(201,146,46,.76) 82%, transparent 100%);
}
.brand-text .line1 { color: var(--brand-cyan); }
.brand-text .line2 { font-size: 1rem; }
.workspace-switcher {
  display:inline-flex; align-items:center; gap:6px;
  padding:6px; border-radius:999px;
  background:rgba(255,255,255,.06); border:1px solid rgba(201,146,46,.25);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.05);
}
.workspace-tab {
  border:none; border-radius:999px; padding:10px 14px; cursor:pointer;
  background:transparent; color:rgba(255,255,255,.78); font:800 .74rem 'Open Sans', sans-serif;
  letter-spacing:.14em; text-transform:uppercase; transition:all .2s ease;
}
.workspace-tab:hover { color:#fff; background:rgba(255,255,255,.08); }
.workspace-tab.active {
  background: linear-gradient(135deg, rgba(201,146,46,.95), rgba(228,180,84,.96));
  color: var(--brand-deeper); box-shadow: 0 6px 16px rgba(201,146,46,.28);
}
.search-input {
  border-color: rgba(201,146,46,.24);
  background: rgba(255,255,255,.1);
}
.search-input:focus { border-color: var(--brand-gold); box-shadow: 0 0 0 4px rgba(201,146,46,.22); }
.search-result:hover, .search-result.active { background: rgba(201,146,46,.08); }
.search-result .sr-crumb { color: var(--brand-cyan); }
.search-result mark { background: #ffe1a8; }
.iconbtn, .btn-pill { border-color: rgba(255,255,255,.16); }
.iconbtn:hover { background: var(--brand-cyan); color: var(--brand-deeper); border-color: var(--brand-cyan); }
.btn-pill {
  background: rgba(255,255,255,.06);
  letter-spacing: .14em;
}
.btn-pill:hover { background: var(--brand-cyan); color: var(--brand-deeper); border-color: var(--brand-cyan); }
.btn-pill.primary, .btn.btn-primary {
  background: linear-gradient(135deg, rgba(201,146,46,.98), rgba(233,193,86,.96));
  color: var(--brand-deeper);
  border-color: rgba(201,146,46,.98);
  box-shadow: 0 6px 16px rgba(201,146,46,.34), inset 0 -2px 0 rgba(0,0,0,.12);
}
.btn-pill.primary:hover, .btn.btn-primary:hover { background: linear-gradient(135deg, #d8a344, #efc76f); color: var(--brand-deeper); }
.layout { max-width: 1480px; gap: 22px; padding: 22px; }
.main {
  background: linear-gradient(180deg, rgba(255,255,255,.98) 0%, rgba(255,255,255,.96) 100%);
  border-radius: 24px; border:1px solid rgba(30,67,72,.12);
  box-shadow: var(--shadow-lg);
}
.sidebar {
  background: linear-gradient(180deg, rgba(255,255,255,.96) 0%, rgba(244,248,246,.98) 100%);
  border:1px solid rgba(30,67,72,.14); border-radius:20px; padding:18px 16px 20px;
  box-shadow: var(--shadow-md); transition: transform .24s ease, opacity .24s ease, box-shadow .24s ease;
}
.sidebar-head { display:flex; justify-content:space-between; gap:12px; align-items:flex-start; margin-bottom:10px; }
.sidebar-mode-label {
  margin-top:6px; font:800 .68rem 'Open Sans', sans-serif; letter-spacing:.24em; text-transform:uppercase; color:var(--brand-cyan);
}
.sidebar-close, .sidebar-reveal {
  display:inline-flex; align-items:center; justify-content:center;
  border:1px solid rgba(30,67,72,.14); background:#fff; color:var(--brand-dark);
  border-radius:999px; padding:10px 14px; font:800 .72rem 'Open Sans', sans-serif; letter-spacing:.12em; text-transform:uppercase; cursor:pointer;
  box-shadow: var(--shadow-sm); transition: all .18s ease;
}
.sidebar-close:hover, .sidebar-reveal:hover { background: var(--brand-cyan); color: var(--brand-deeper); border-color: var(--brand-cyan); }
.sidebar-reveal { position:fixed; left:16px; top:96px; z-index:125; opacity:0; pointer-events:none; transform:translateX(-8px); }
body.sidebar-collapsed .sidebar-reveal { opacity:1; pointer-events:auto; transform:none; }
body.sidebar-collapsed .layout { grid-template-columns: 1fr; }
body.sidebar-collapsed .sidebar {
  position: fixed; left: 18px; top: 94px; width: 300px; max-width: calc(100vw - 36px); z-index: 122;
  transform: translateX(-120%); opacity: 0; pointer-events: none;
}
body.sidebar-collapsed .main { min-width: 0; }
.toc-chapter:hover { background: rgba(201,146,46,.08); }
.toc-chapter.active {
  background: linear-gradient(135deg, rgba(30,67,72,.96), rgba(13,31,34,.98));
  box-shadow: 0 10px 24px rgba(8,17,19,.14);
}
.ch-num { background: rgba(201,146,46,.08); color: var(--brand-dark); }
.toc-subs a:hover, .toc-subs a.active { background: rgba(201,146,46,.08); border-left-color: var(--brand-gold); }
.hero {
  background:
    radial-gradient(ellipse 70% 80% at 20% 10%, rgba(201,146,46,.18), transparent 60%),
    radial-gradient(ellipse 60% 80% at 100% 100%, rgba(30,67,72,.72), transparent 60%),
    linear-gradient(180deg, var(--brand-deeper) 0%, #122A2E 54%, var(--brand-ink) 100%);
  padding: 58px 54px 48px;
}
.hero::before { width: 112px; height: 3px; background: var(--brand-cyan); }
.hero .eyebrow { color: var(--brand-cyan); border-bottom: 2px solid var(--brand-gold); padding-bottom: 6px; }
.hero h1 { text-transform: uppercase; font-weight: 900; }
.hero .lead { color: rgba(255,255,255,.9); font-size: 1.08rem; }
.hero-meta span { border-color: rgba(201,146,46,.4); color: #d5ecea; background: rgba(201,146,46,.08); }
.workspace-launcher {
  margin: 26px 44px 0; padding: 24px 28px; border-radius: 18px;
  background: linear-gradient(180deg, rgba(255,255,255,.98), rgba(241,246,244,.98));
  border: 1px solid rgba(30,67,72,.12); box-shadow: var(--shadow-md);
}
.workspace-launcher-head h2 { font-family: 'Merriweather', Georgia, serif; color: var(--brand-deeper); margin: 8px 0 10px; text-transform: uppercase; line-height: 1.14; }
.workspace-launcher-head p { color: var(--text-muted); max-width: 72ch; }
.workspace-launcher-grid { display:grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap:16px; margin-top:18px; }
.workspace-card {
  text-align:left; border:none; cursor:pointer; padding:22px; border-radius:16px;
  background: linear-gradient(180deg, rgba(228,235,232,.78), rgba(255,255,255,.98));
  border-left: 4px solid var(--brand-cyan); box-shadow: var(--shadow-sm); transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
  color: var(--text-main);
}
.workspace-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); border-left-color: var(--brand-gold); }
.workspace-card.active { box-shadow: 0 14px 32px rgba(13,31,34,.16); }
.workspace-card strong { display:block; font-family:'Merriweather', Georgia, serif; font-size:1.3rem; line-height:1.15; color:var(--brand-deeper); margin-bottom:8px; text-transform:uppercase; }
.workspace-card span { display:block; }
.workspace-card-eyebrow { font:800 .68rem 'Open Sans', sans-serif; letter-spacing:.26em; text-transform:uppercase; color:var(--brand-cyan); margin-bottom:10px; }
.workspace-card.parts { border-left-color: var(--brand-gold); }
.workspace-card.parts .workspace-card-eyebrow { color: var(--brand-gold-deeper); }
.quick-tiles { padding-top: 22px; }
.tile, .chapter-card, .info-card, .parts-group, .parts-browser-panel, .parts-detail-panel, .parts-basket-panel, .parts-card {
  box-shadow: var(--shadow-sm); border-color: rgba(30,67,72,.12);
}
.tile, .chapter-card { border-top: 3px solid transparent; }
.tile:hover, .chapter-card:hover { border-top-color: var(--brand-cyan); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.tile-parts { border-top-color: var(--brand-gold) !important; }
.chapter-intro, .page-header {
  background: linear-gradient(180deg, rgba(8,17,19,.98), rgba(18,42,46,.96));
  color: #fff; border-radius: 20px; padding: 24px 26px; margin-bottom: 28px; box-shadow: var(--shadow-md);
}
.chapter-intro .eyebrow, .page-header .eyebrow { color: var(--brand-cyan); }
.chapter-intro h1, .page-header h1 { color: #fff; text-transform: uppercase; }
.chapter-badge { background: linear-gradient(135deg, rgba(201,146,46,.96), rgba(233,193,86,.92)); color: var(--brand-deeper); }
.content h2, .content h3, .content h4 { color: var(--brand-deeper); }
.callout, .reg-form, .video-card, .figure, table { border-color: rgba(30,67,72,.12); box-shadow: var(--shadow-sm); }
.callout.important, .callout.warning, .callout.danger { background: linear-gradient(180deg, rgba(255,255,255,.98), rgba(240,245,243,.98)); }
.table, table { overflow:hidden; }
thead th { background: rgba(30,67,72,.07); color: var(--brand-deeper); }
.section-nav a {
  background: linear-gradient(180deg, rgba(255,255,255,.98), rgba(243,247,245,.98));
  border-color: rgba(30,67,72,.12);
}
.section-nav a.next { background: linear-gradient(135deg, rgba(30,67,72,.96), rgba(13,31,34,.98)); color:#fff; }
.section-nav a.next .sn-label { color: var(--brand-cyan); }
.parts-hero-card {
  background:
    radial-gradient(ellipse 60% 100% at 0% 0%, rgba(201,146,46,.12), transparent 62%),
    linear-gradient(180deg, rgba(255,255,255,.98), rgba(241,246,244,.98));
  border:1px solid rgba(30,67,72,.12);
}
.parts-assembly-card.active, .parts-curated-card.active, .parts-mini-card.active { background: linear-gradient(180deg, rgba(30,67,72,.98), rgba(8,17,19,.98)); }
.parts-page-chip.active { background: var(--brand-cyan); color: var(--brand-deeper); border-color: var(--brand-cyan); }
.parts-basket-stat strong, .parts-money-cell, .parts-basket-item-total { color: var(--brand-deeper); }
.footer { background: linear-gradient(180deg, var(--brand-deeper) 0%, var(--brand-ink) 100%); border-top-color: var(--brand-cyan); }
[data-workspace] { transition: opacity .18s ease; }
body.workspace-manual [data-workspace="parts"],
body.workspace-parts [data-workspace="manual"] { display:none !important; }
body.workspace-manual .workspace-card.manual,
body.workspace-parts .workspace-card.parts { box-shadow: 0 16px 34px rgba(8,17,19,.18); }
@media (max-width: 1180px) {
  .topbar-inner { grid-template-columns: 1fr; }
  .topbar-leading { flex-wrap: wrap; }
  .search-wrap { order: 3; max-width: none; }
  .topbar-actions { justify-content: flex-start; flex-wrap: wrap; }
}
@media (max-width: 960px) {
  .workspace-switcher { width: 100%; justify-content: stretch; }
  .workspace-tab { flex:1; }
  .sidebar-reveal { top: 88px; }
  body.sidebar-collapsed .sidebar { top: 84px; }
  .workspace-launcher { margin: 22px 22px 0; padding: 20px; }
  .workspace-launcher-grid { grid-template-columns: 1fr; }
  .hero { padding: 44px 22px 34px; }
}
@media (max-width: 640px) {
  .sidebar-close, .sidebar-reveal { padding: 9px 12px; font-size: .68rem; }
  .workspace-card strong { font-size: 1.08rem; }
}
@media print {
  .workspace-switcher, .sidebar-close, .sidebar-reveal, .workspace-launcher { display:none !important; }
}


/* ═══════════════════════════════════════════════════════════════
   2026-04-26 PATCH — contrast, basket CTA, responsive polish, PDF fallback
   ═══════════════════════════════════════════════════════════════ */

.direct-mail-link { color: inherit; text-decoration: none; }
.direct-mail-link:hover { text-decoration: underline; }

.parts-diagram-pdf {
  width: 100%;
  min-height: 760px;
  border: 0;
  border-radius: 12px;
  background: #ffffff;
  box-shadow: inset 0 0 0 1px rgba(37,74,79,.08);
}

.parts-diagram-fallback {
  margin-top: 12px;
  padding: 14px 16px;
  border-radius: 12px;
  background: linear-gradient(180deg, rgba(230,178,74,.12), rgba(230,178,74,.06));
  border: 1px solid rgba(184,133,34,.28);
  color: var(--brand-ink);
  font-style: normal;
  line-height: 1.5;
}

.parts-basket-panel {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, #ffffff 0%, #f6fbfa 100%);
  border: 1px solid rgba(37,74,79,.12);
  box-shadow: 0 16px 32px rgba(15,35,38,.08);
}
.parts-basket-panel::before {
  content: '';
  position: absolute;
  inset: 0 0 auto 0;
  height: 6px;
  background: linear-gradient(90deg, var(--brand-dark) 0%, var(--brand-gold) 100%);
}
.parts-basket-head,
.parts-basket-summary,
.parts-basket-form,
.parts-basket-empty,
.parts-basket-items,
.parts-basket-cta {
  position: relative;
  z-index: 1;
}
.parts-basket-head h3,
.parts-basket-item-title,
.parts-basket-cta h4,
.parts-detail-head h3,
.parts-card h4,
.parts-admin-card h4,
.parts-admin-head h3,
.parts-detail-code,
.parts-search-label,
.parts-basket-field span,
.parts-table th,
.parts-group h3,
.parts-assembly-title,
.parts-curated-title,
.content .parts-basket-panel h3,
.content .parts-basket-panel h4,
.content .parts-browser-panel h3,
.content .parts-detail-panel h3,
.content .parts-detail-panel h4,
.content .parts-admin-panel h3,
.content .parts-admin-panel h4,
.content .page-header h1,
.content .page-header h2,
.content .chapter-heading h1,
.content .chapter-heading h2,
.content .cta-text h3,
.content .video-card h3,
.content .info-card .label,
.content label,
.content th,
.content dt,
.content strong {
  color: var(--brand-deeper);
}
.content .eyebrow,
.parts-basket-save,
.parts-basket-head p,
.parts-basket-item-meta,
.parts-detail-empty,
.parts-result-meta,
.parts-items-meta,
.parts-card p,
.parts-admin-copy,
.parts-admin-helper,
.parts-admin-selection,
.parts-admin-status,
.content p,
.content li,
.content td,
.content dd,
.content .meta,
.content .value.info-card-value-small,
.content .tile-desc,
.content .cc-desc {
  color: var(--text-main);
}

.parts-basket-stat,
.parts-basket-save,
.parts-basket-item,
.parts-basket-empty,
.parts-basket-cta {
  background: rgba(255,255,255,.92);
  border: 1px solid rgba(37,74,79,.10);
  box-shadow: 0 10px 20px rgba(15,35,38,.05);
}
.parts-basket-stat strong,
.parts-money-cell,
.parts-basket-item-total {
  color: var(--brand-deeper);
}

.parts-basket-cta {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) auto;
  gap: 16px;
  align-items: center;
  margin: 2px 0 16px;
  padding: 18px;
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(37,74,79,.97), rgba(26,56,60,.97));
  color: #ffffff;
}
.parts-basket-cta .eyebrow {
  color: rgba(230,178,74,.96);
  margin-bottom: 6px;
}
.parts-basket-cta h4 {
  margin: 0 0 8px;
  color: #ffffff;
}
.parts-basket-cta p {
  margin: 0;
  color: rgba(245,247,247,.9);
  max-width: 60ch;
}
.parts-basket-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
}
.parts-basket-cta .btn-pill {
  box-shadow: none;
}
.parts-basket-cta .btn-pill.primary {
  background: var(--brand-gold);
  border-color: var(--brand-gold);
  color: var(--brand-ink);
}
.parts-basket-cta .btn-pill:not(.primary) {
  background: rgba(255,255,255,.08);
  border-color: rgba(255,255,255,.18);
  color: #ffffff;
}
.parts-basket-cta .btn-pill:not(.primary):hover {
  background: rgba(255,255,255,.14);
}

body.dark-mode .content .page-header h1,
body.dark-mode .content .page-header h2,
body.dark-mode .content .chapter-heading h1,
body.dark-mode .content .chapter-heading h2,
body.dark-mode .content .cta-text h3,
body.dark-mode .content .video-card h3,
body.dark-mode .parts-basket-head h3,
body.dark-mode .parts-basket-item-title,
body.dark-mode .parts-basket-cta h4,
body.dark-mode .parts-detail-head h3,
body.dark-mode .parts-card h4,
body.dark-mode .parts-admin-card h4,
body.dark-mode .parts-admin-head h3,
body.dark-mode .parts-group h3,
body.dark-mode .parts-assembly-title,
body.dark-mode .parts-curated-title,
body.dark-mode .parts-search-label,
body.dark-mode .parts-basket-field span,
body.dark-mode .parts-table th,
body.dark-mode .content label,
body.dark-mode .content th,
body.dark-mode .content dt,
body.dark-mode .content strong {
  color: #f5f7f7 !important;
}
body.dark-mode .content .eyebrow,
body.dark-mode .parts-detail-code,
body.dark-mode .parts-basket-save,
body.dark-mode .info-card .label,
body.dark-mode .parts-page-chip,
body.dark-mode .parts-result-meta,
body.dark-mode .parts-items-meta,
body.dark-mode .content .meta,
body.dark-mode .content .label {
  color: var(--brand-gold) !important;
}
body.dark-mode .content p,
body.dark-mode .content li,
body.dark-mode .content td,
body.dark-mode .content dd,
body.dark-mode .parts-basket-head p,
body.dark-mode .parts-basket-item-meta,
body.dark-mode .parts-detail-empty,
body.dark-mode .parts-card p,
body.dark-mode .parts-admin-copy,
body.dark-mode .parts-admin-helper,
body.dark-mode .parts-admin-selection,
body.dark-mode .parts-admin-status,
body.dark-mode .content .value,
body.dark-mode .content .tile-desc,
body.dark-mode .content .cc-desc {
  color: rgba(245,247,247,.92) !important;
}
body.dark-mode .parts-basket-panel,
body.dark-mode .parts-basket-stat,
body.dark-mode .parts-basket-save,
body.dark-mode .parts-basket-item,
body.dark-mode .parts-basket-empty,
body.dark-mode .parts-browser-panel,
body.dark-mode .parts-detail-panel,
body.dark-mode .parts-card,
body.dark-mode .parts-group,
body.dark-mode .parts-diagram-frame,
body.dark-mode .parts-admin-panel,
body.dark-mode .parts-admin-card,
body.dark-mode .parts-admin-selection,
body.dark-mode .parts-admin-status,
body.dark-mode .parts-table th,
body.dark-mode .parts-page-chip,
body.dark-mode .parts-hero-card {
  background: rgba(255,255,255,.04) !important;
  border-color: rgba(255,255,255,.12) !important;
}
body.dark-mode .parts-basket-item-total,
body.dark-mode .parts-basket-field input,
body.dark-mode .parts-basket-field textarea,
body.dark-mode .parts-search-input,
body.dark-mode .parts-diagram-pdf {
  background: rgba(255,255,255,.05);
  color: #f5f7f7;
  border-color: rgba(255,255,255,.14);
}
body.dark-mode .parts-basket-field input::placeholder,
body.dark-mode .parts-basket-field textarea::placeholder,
body.dark-mode .parts-search-input::placeholder {
  color: rgba(245,247,247,.58);
}
body.dark-mode .parts-diagram-fallback {
  background: rgba(230,178,74,.14);
  border-color: rgba(230,178,74,.28);
  color: #f5f7f7;
}
body.dark-mode .parts-basket-cta {
  background: linear-gradient(135deg, rgba(18,31,34,.98), rgba(31,49,53,.98));
  border-color: rgba(230,178,74,.18);
}
body.dark-mode .parts-basket-cta h4 { color: #ffffff !important; }
body.dark-mode .parts-basket-cta p { color: rgba(245,247,247,.88) !important; }
body.dark-mode .parts-basket-cta .btn-pill:not(.primary) { color: #ffffff !important; }

@media (max-width: 1180px) {
  .parts-basket-cta {
    grid-template-columns: 1fr;
    align-items: flex-start;
  }
  .parts-basket-cta-actions {
    justify-content: flex-start;
  }
}

@media (max-width: 960px) {
  .topbar-inner {
    grid-template-columns: 1fr;
    gap: 12px;
    align-items: stretch;
  }
  .topbar .search-wrap,
  .topbar .actions,
  .topbar .topbar-actions {
    width: 100%;
  }
  .parts-diagram-pdf {
    min-height: 620px;
  }
}

@media (max-width: 760px) {
  .parts-basket-summary {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .parts-basket-summary,
  .parts-basket-form,
  .parts-basket-item-grid,
  .parts-detail-grid,
  .parts-hero-card {
    grid-template-columns: 1fr !important;
  }
  .parts-basket-actions,
  .parts-basket-cta-actions,
  .parts-hero-actions {
    width: 100%;
  }
  .parts-basket-actions > *,
  .parts-basket-cta-actions > *,
  .parts-hero-actions > * {
    width: 100%;
    justify-content: center;
    text-align: center;
  }
  .parts-diagram-pdf {
    min-height: 480px;
  }
}


/* ═══════════════════════════════════════════════════════════════
   GX54 BRAND CONFORMITY LAYER — 2026-04-26
   Reference: GX54 product creative
   ═══════════════════════════════════════════════════════════════ */
:root {
  --brand-dark: #1E4348;
  --brand-deeper: #0A181B;
  --brand-ink: #081113;
  --brand-mist: #E4EBE8;
  --brand-accent: #E8F1EF;
  --brand-rule: rgba(30, 67, 72, 0.14);
  --brand-gold: #C9922E;
  --brand-gold-deeper: #9B6C16;
  --brand-gold-light: #F0E0B7;
  --brand-cyan: #C9922E;
  --text-main: #112327;
  --text-muted: #4F6164;
  --text-faint: #738487;
  --surface-soft: #F3F8F7;
  --surface-page: #FFFFFF;
  --page-border: rgba(30, 67, 72, 0.12);
  --shadow-sm: 0 2px 6px rgba(0,0,0,.08);
  --shadow-md: 0 8px 26px rgba(0,0,0,.12);
  --shadow-lg: 0 16px 44px rgba(13,31,34,.25);
}

html {
  background:
    radial-gradient(ellipse 68% 82% at 12% 2%, rgba(201,146,46,.08), transparent 58%),
    linear-gradient(180deg, #edf3f1 0%, #e4ebe8 100%);
}
body {
  background: transparent;
  color: var(--text-main);
}
body.dark-mode {
  background:
    radial-gradient(ellipse 68% 82% at 12% 2%, rgba(201,146,46,.10), transparent 58%),
    linear-gradient(180deg, #0b1719 0%, #102427 100%);
}

.topbar {
  background: rgba(13,31,34,.96) !important;
  border-bottom: 2px solid var(--brand-cyan) !important;
  box-shadow: 0 2px 10px rgba(0,0,0,.18) !important;
  backdrop-filter: saturate(120%) blur(6px);
  -webkit-backdrop-filter: saturate(120%) blur(6px);
}
.topbar-inner {
  max-width: 1480px;
}
.brand-lockup .brand-logo img {
  filter: drop-shadow(0 10px 22px rgba(0,0,0,.24));
}
.brand-divider {
  background: linear-gradient(180deg, rgba(201,146,46,.2), rgba(201,146,46,.75), rgba(201,146,46,.2));
}
.brand-text .line1 {
  color: var(--brand-cyan);
  letter-spacing: .22em;
  text-transform: uppercase;
}
.brand-text .line2 {
  color: #ffffff;
  text-transform: uppercase;
  letter-spacing: .04em;
}
.workspace-switcher {
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 999px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.06);
}
.workspace-tab {
  color: rgba(255,255,255,.82);
  letter-spacing: .08em;
  text-transform: uppercase;
  font-weight: 800;
}
.workspace-tab:hover {
  background: rgba(255,255,255,.08) !important;
  color: #fff !important;
}
.workspace-tab.active {
  background: var(--brand-cyan) !important;
  color: var(--brand-deeper) !important;
  box-shadow: 0 8px 18px rgba(201,146,46,.22);
}
.search-wrap {
  box-shadow: 0 8px 20px rgba(0,0,0,.18);
}
.search-input {
  border-color: rgba(201,146,46,.24);
}
.search-input:focus {
  border-color: var(--brand-cyan);
  box-shadow: 0 0 0 4px rgba(201,146,46,.12);
}
.iconbtn, .btn-pill {
  border-radius: 999px;
}
.iconbtn:hover {
  background: var(--brand-cyan) !important;
  color: var(--brand-deeper) !important;
  border-color: var(--brand-cyan) !important;
}
.btn-pill {
  background: rgba(255,255,255,.04);
  border-color: rgba(255,255,255,.16);
  color: #ffffff;
}
.btn-pill:hover {
  background: var(--brand-cyan) !important;
  color: var(--brand-deeper) !important;
  border-color: var(--brand-cyan) !important;
}
.btn-pill.primary,
.btn.btn-primary,
.register-cta,
.btn-primary {
  background: linear-gradient(135deg, #C9922E 0%, #E7C068 100%) !important;
  border-color: #C9922E !important;
  color: var(--brand-deeper) !important;
  box-shadow: 0 8px 18px rgba(201,146,46,.24);
}
.btn-pill.primary:hover,
.btn.btn-primary:hover,
.register-cta:hover,
.btn-primary:hover {
  background: linear-gradient(135deg, #d8a344 0%, #efc76f 100%) !important;
  color: var(--brand-deeper) !important;
}

.sidebar {
  background: rgba(255,255,255,.9);
  border: 1px solid rgba(30,67,72,.12);
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(8px);
}
.sidebar-title {
  color: var(--brand-deeper);
  text-transform: uppercase;
  letter-spacing: .1em;
}
.sidebar-mode-label {
  color: var(--brand-cyan);
  font-weight: 800;
  letter-spacing: .16em;
  text-transform: uppercase;
}
.sidebar-close, .sidebar-reveal {
  border-radius: 999px;
  background: rgba(13,31,34,.92);
  color: rgba(255,255,255,.84);
  border: 1px solid rgba(201,146,46,.22);
}
.sidebar-close:hover, .sidebar-reveal:hover {
  background: var(--brand-cyan) !important;
  color: var(--brand-deeper) !important;
}
.toc-chapter {
  border-radius: 12px;
}
.toc-chapter:hover,
.toc-chapter.active {
  background: rgba(201,146,46,.08);
}
.ch-num {
  background: rgba(201,146,46,.08);
  color: var(--brand-deeper);
}
.toc-subs a:hover,
.toc-subs a.active {
  color: var(--brand-cyan);
}

.hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(ellipse 70% 80% at 20% 10%, rgba(201,146,46,.18), transparent 60%),
    radial-gradient(ellipse 60% 80% at 100% 100%, rgba(30,67,72,.72), transparent 60%),
    linear-gradient(180deg, var(--brand-deeper) 0%, #122A2E 54%, var(--brand-ink) 100%) !important;
  color: #fff;
  border: 1px solid rgba(201,146,46,.18);
  box-shadow: var(--shadow-lg);
}
.hero::before {
  content: '';
  position: absolute;
  right: -8%;
  top: -10%;
  width: min(45vw, 520px);
  height: 220px;
  background: var(--brand-cyan) !important;
  opacity: .18;
  transform: rotate(-14deg);
  border-radius: 10px;
}
.hero::after {
  content: '';
  position: absolute;
  left: -6%;
  bottom: -15%;
  width: min(40vw, 420px);
  height: 180px;
  border: 2px solid rgba(201,146,46,.18);
  border-radius: 50%;
}
.hero .eyebrow {
  color: var(--brand-cyan) !important;
  border-bottom: 2px solid var(--brand-gold) !important;
  letter-spacing: .28em;
  text-transform: uppercase;
}
.hero h1 {
  font-family: 'Merriweather', Georgia, serif;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -.01em;
}
.hero .lead {
  font-family: 'Merriweather', Georgia, serif;
  font-style: italic;
  color: rgba(255,255,255,.9) !important;
  max-width: 56rem;
}
.hero-meta span {
  background: rgba(255,255,255,.06) !important;
  border: 1px solid rgba(201,146,46,.28) !important;
  color: #d5ecea !important;
  text-transform: uppercase;
  letter-spacing: .18em;
}

.workspace-launcher,
.chapter-intro,
.page-header,
.parts-hero-card,
.cta-bar {
  background:
    linear-gradient(180deg, rgba(10,24,27,.96) 0%, rgba(30,67,72,.96) 100%);
  color: #fff;
  border: 1px solid rgba(201,146,46,.18);
  box-shadow: var(--shadow-lg);
}
.workspace-launcher .eyebrow,
.chapter-intro .eyebrow,
.page-header .eyebrow,
.parts-hero-card .eyebrow,
.cta-bar .eyebrow,
.register-eyebrow {
  color: var(--brand-cyan) !important;
  letter-spacing: .24em;
  text-transform: uppercase;
}
.workspace-launcher h2,
.chapter-intro h1,
.page-header h1,
.parts-hero-card h2,
.cta-bar h3,
.register-headline {
  color: #fff !important;
  text-transform: uppercase;
}
.workspace-launcher p,
.chapter-intro p,
.page-header p,
.parts-hero-card p,
.cta-bar p,
.register-sub {
  color: rgba(255,255,255,.88) !important;
}
.register-bar {
  background: linear-gradient(135deg, rgba(10,24,27,.97), rgba(30,67,72,.97));
  border: 1px solid rgba(201,146,46,.18);
  box-shadow: var(--shadow-lg);
}

.workspace-card,
.tile,
.chapter-card,
.info-card,
.card,
.parts-group,
.parts-browser-panel,
.parts-detail-panel,
.parts-basket-panel,
.parts-card,
.parts-basket-stat,
.parts-basket-save,
.parts-basket-item,
.parts-basket-empty,
.parts-admin-card,
.parts-admin-selection,
.parts-admin-status,
.parts-diagram-frame,
.parts-table th {
  background: #fff !important;
  border: 1px solid rgba(30,67,72,.10) !important;
  box-shadow: var(--shadow-sm) !important;
}
.workspace-card,
.chapter-card,
.tile,
.product-card,
.info-card,
.parts-card,
.parts-browser-panel,
.parts-detail-panel {
  border-left: 4px solid var(--brand-cyan) !important;
  border-top: 1px solid rgba(30,67,72,.10) !important;
}
.workspace-card.parts,
.chapter-card:hover,
.tile:hover,
.info-card:hover,
.parts-card:hover,
.parts-browser-panel:hover,
.parts-detail-panel:hover,
.workspace-card:hover {
  border-left-color: var(--brand-gold) !important;
}
.workspace-card:hover,
.chapter-card:hover,
.tile:hover,
.info-card:hover,
.card:hover,
.parts-card:hover,
.parts-browser-panel:hover,
.parts-detail-panel:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md) !important;
}
.workspace-card strong,
.chapter-card .cc-title,
.card-title,
.parts-basket-head h3,
.parts-basket-item-title,
.parts-detail-head h3,
.parts-card h4,
.parts-admin-card h4,
.parts-admin-head h3,
.parts-group h3,
.parts-assembly-title,
.parts-curated-title,
.content h2,
.content h3,
.content h4 {
  color: var(--brand-deeper) !important;
}
.workspace-card-eyebrow,
.chapter-card .cc-num,
.parts-detail-code,
.parts-search-label,
.info-card .label,
.parts-basket-field span,
.parts-table th,
.content .label,
.content .eyebrow {
  color: var(--brand-cyan) !important;
}
.workspace-card.parts .workspace-card-eyebrow,
.parts-basket-cta .eyebrow {
  color: var(--brand-gold) !important;
}
.workspace-card span,
.chapter-card .cc-desc,
.card-desc,
.parts-basket-head p,
.parts-basket-item-meta,
.parts-detail-empty,
.parts-result-meta,
.parts-items-meta,
.parts-card p,
.parts-admin-copy,
.parts-admin-helper,
.parts-admin-selection,
.parts-admin-status,
.content p,
.content li,
.content td,
.content dd,
.content .meta,
.content .value,
.content .tile-desc,
.content .cc-desc {
  color: var(--text-main) !important;
}
.card-visual,
.parts-basket-item-total,
.parts-basket-field input,
.parts-basket-field textarea,
.parts-search-input {
  background: var(--surface-soft) !important;
}
.parts-money-cell,
.parts-basket-stat strong,
.parts-basket-item-total {
  color: var(--brand-deeper) !important;
}
.parts-page-chip.active,
.toggle-group button.active {
  background: var(--brand-cyan) !important;
  color: var(--brand-deeper) !important;
  border-color: var(--brand-cyan) !important;
}
.parts-assembly-card.active,
.parts-curated-card.active,
.parts-mini-card.active {
  border-left-color: var(--brand-gold) !important;
  box-shadow: var(--shadow-md) !important;
}
.parts-basket-panel::before {
  background: linear-gradient(90deg, var(--brand-cyan) 0%, var(--brand-gold) 100%) !important;
}
.parts-basket-cta {
  background: linear-gradient(135deg, rgba(10,24,27,.98), rgba(30,67,72,.98)) !important;
  border: 1px solid rgba(201,146,46,.18) !important;
  box-shadow: var(--shadow-lg) !important;
}
.parts-basket-cta h4 { color: #fff !important; }
.parts-basket-cta p { color: rgba(255,255,255,.88) !important; }
.parts-basket-cta .btn-pill:not(.primary) {
  background: rgba(255,255,255,.08) !important;
  border-color: rgba(255,255,255,.18) !important;
}
.parts-diagram-fallback {
  background: linear-gradient(180deg, rgba(201,146,46,.10), rgba(201,146,46,.04)) !important;
  border-color: rgba(201,146,46,.24) !important;
}
.footer {
  background: linear-gradient(180deg, var(--brand-deeper) 0%, var(--brand-ink) 100%) !important;
  border-top: 3px solid var(--brand-cyan) !important;
}
.footer strong,
.footer a {
  color: var(--brand-cyan) !important;
}
.footer a:hover,
.footer strong:hover {
  color: var(--brand-gold) !important;
}

body.dark-mode .topbar {
  background: rgba(5,12,14,.96) !important;
}
body.dark-mode .sidebar,
body.dark-mode .workspace-card,
body.dark-mode .tile,
body.dark-mode .chapter-card,
body.dark-mode .info-card,
body.dark-mode .card,
body.dark-mode .parts-group,
body.dark-mode .parts-browser-panel,
body.dark-mode .parts-detail-panel,
body.dark-mode .parts-basket-panel,
body.dark-mode .parts-card,
body.dark-mode .parts-basket-stat,
body.dark-mode .parts-basket-save,
body.dark-mode .parts-basket-item,
body.dark-mode .parts-basket-empty,
body.dark-mode .parts-admin-card,
body.dark-mode .parts-admin-selection,
body.dark-mode .parts-admin-status,
body.dark-mode .parts-diagram-frame,
body.dark-mode .parts-table th {
  background: rgba(255,255,255,.04) !important;
  border-color: rgba(255,255,255,.12) !important;
}
body.dark-mode .workspace-card strong,
body.dark-mode .chapter-card .cc-title,
body.dark-mode .card-title,
body.dark-mode .parts-basket-head h3,
body.dark-mode .parts-basket-item-title,
body.dark-mode .parts-detail-head h3,
body.dark-mode .parts-card h4,
body.dark-mode .parts-admin-card h4,
body.dark-mode .parts-admin-head h3,
body.dark-mode .parts-group h3,
body.dark-mode .parts-assembly-title,
body.dark-mode .parts-curated-title,
body.dark-mode .content h2,
body.dark-mode .content h3,
body.dark-mode .content h4 {
  color: #fff !important;
}
body.dark-mode .workspace-card-eyebrow,
body.dark-mode .chapter-card .cc-num,
body.dark-mode .parts-detail-code,
body.dark-mode .parts-search-label,
body.dark-mode .info-card .label,
body.dark-mode .parts-basket-field span,
body.dark-mode .parts-table th,
body.dark-mode .content .label,
body.dark-mode .content .eyebrow,
body.dark-mode .sidebar-mode-label {
  color: var(--brand-cyan) !important;
}
body.dark-mode .workspace-card.parts .workspace-card-eyebrow,
body.dark-mode .parts-basket-cta .eyebrow,
body.dark-mode .hero-meta span {
  color: var(--brand-gold) !important;
}
body.dark-mode .workspace-card span,
body.dark-mode .chapter-card .cc-desc,
body.dark-mode .card-desc,
body.dark-mode .parts-basket-head p,
body.dark-mode .parts-basket-item-meta,
body.dark-mode .parts-detail-empty,
body.dark-mode .parts-result-meta,
body.dark-mode .parts-items-meta,
body.dark-mode .parts-card p,
body.dark-mode .parts-admin-copy,
body.dark-mode .parts-admin-helper,
body.dark-mode .parts-admin-selection,
body.dark-mode .parts-admin-status,
body.dark-mode .content p,
body.dark-mode .content li,
body.dark-mode .content td,
body.dark-mode .content dd,
body.dark-mode .content .meta,
body.dark-mode .content .value,
body.dark-mode .content .tile-desc,
body.dark-mode .content .cc-desc {
  color: rgba(245,247,247,.9) !important;
}
body.dark-mode .card-visual,
body.dark-mode .parts-basket-item-total,
body.dark-mode .parts-basket-field input,
body.dark-mode .parts-basket-field textarea,
body.dark-mode .parts-search-input {
  background: rgba(255,255,255,.05) !important;
  color: #fff !important;
  border-color: rgba(255,255,255,.14) !important;
}
body.dark-mode .footer strong,
body.dark-mode .footer a { color: var(--brand-cyan) !important; }
body.dark-mode .footer a:hover { color: var(--brand-gold) !important; }

@media (max-width: 960px) {
  .hero {
    padding: 44px 22px 34px !important;
  }
  .workspace-switcher {
    width: 100%;
  }
  .workspace-tab {
    flex: 1 1 0;
  }
}
@media (max-width: 640px) {
  .hero .eyebrow,
  .workspace-launcher .eyebrow,
  .chapter-intro .eyebrow,
  .page-header .eyebrow,
  .parts-hero-card .eyebrow,
  .register-eyebrow {
    letter-spacing: .18em;
  }
}

/* ═══════════════════════════════════════════════════════════════
   2026-04-26 V2 — top landing + contrast safety + contents menu fixes
   ═══════════════════════════════════════════════════════════════ */
body:not(.dark-mode) .sidebar,
body:not(.dark-mode) .toc-chapter,
body:not(.dark-mode) .toc-chapter .ch-label,
body:not(.dark-mode) .toc-chapter .ch-caret,
body:not(.dark-mode) .toc-subs a,
body:not(.dark-mode) .sidebar-title,
body:not(.dark-mode) .sidebar-mode-label {
  color: var(--brand-ink) !important;
}
body:not(.dark-mode) .toc-chapter.active {
  background: rgba(201,146,46,.14) !important;
  color: var(--brand-ink) !important;
}
body:not(.dark-mode) .toc-chapter.active .ch-label,
body:not(.dark-mode) .toc-chapter.active .ch-caret,
body:not(.dark-mode) .toc-chapter.active .ch-num {
  color: var(--brand-ink) !important;
}
body:not(.dark-mode) .toc-chapter.active .ch-num {
  background: var(--brand-gold) !important;
}
body:not(.dark-mode) .toc-subs a:hover,
body:not(.dark-mode) .toc-subs a.active {
  color: var(--brand-ink) !important;
  background: rgba(201,146,46,.12) !important;
  border-left-color: var(--brand-gold) !important;
}

body.dark-mode .sidebar,
body.dark-mode .toc-chapter,
body.dark-mode .toc-chapter .ch-label,
body.dark-mode .toc-chapter .ch-caret,
body.dark-mode .toc-subs a,
body.dark-mode .sidebar-title,
body.dark-mode .sidebar-mode-label {
  color: #f5f7f7 !important;
}
body.dark-mode .toc-chapter.active {
  background: var(--brand-gold) !important;
  color: var(--brand-ink) !important;
}
body.dark-mode .toc-chapter.active .ch-label,
body.dark-mode .toc-chapter.active .ch-caret,
body.dark-mode .toc-chapter.active .ch-num {
  color: var(--brand-ink) !important;
}
body.dark-mode .toc-chapter.active .ch-num {
  background: rgba(8,17,19,.12) !important;
}
body.dark-mode .toc-subs a:hover,
body.dark-mode .toc-subs a.active {
  color: #ffffff !important;
  background: rgba(201,146,46,.16) !important;
  border-left-color: var(--brand-gold) !important;
}

body:not(.dark-mode) .content,
body:not(.dark-mode) .content p,
body:not(.dark-mode) .content li,
body:not(.dark-mode) .content td,
body:not(.dark-mode) .content dd,
body:not(.dark-mode) .content .value,
body:not(.dark-mode) .content .meta,
body:not(.dark-mode) .content .tile-desc,
body:not(.dark-mode) .content .cc-desc,
body:not(.dark-mode) .parts-basket-head p,
body:not(.dark-mode) .parts-basket-item-meta,
body:not(.dark-mode) .parts-detail-empty,
body:not(.dark-mode) .parts-card p,
body:not(.dark-mode) .parts-admin-copy,
body:not(.dark-mode) .parts-admin-helper,
body:not(.dark-mode) .parts-admin-selection,
body:not(.dark-mode) .parts-admin-status {
  color: var(--brand-ink) !important;
}
body:not(.dark-mode) .content h1,
body:not(.dark-mode) .content h2,
body:not(.dark-mode) .content h3,
body:not(.dark-mode) .content h4,
body:not(.dark-mode) .content strong,
body:not(.dark-mode) .parts-basket-head h3,
body:not(.dark-mode) .parts-basket-item-title,
body:not(.dark-mode) .parts-detail-head h3,
body:not(.dark-mode) .parts-card h4,
body:not(.dark-mode) .parts-admin-card h4,
body:not(.dark-mode) .parts-admin-head h3,
body:not(.dark-mode) .info-card .label {
  color: var(--brand-deeper) !important;
}
body.dark-mode .content p,
body.dark-mode .content li,
body.dark-mode .content td,
body.dark-mode .content dd,
body.dark-mode .content .value,
body.dark-mode .content .meta,
body.dark-mode .content .tile-desc,
body.dark-mode .content .cc-desc,
body.dark-mode .parts-basket-head p,
body.dark-mode .parts-basket-item-meta,
body.dark-mode .parts-detail-empty,
body.dark-mode .parts-card p,
body.dark-mode .parts-admin-copy,
body.dark-mode .parts-admin-helper,
body.dark-mode .parts-admin-selection,
body.dark-mode .parts-admin-status {
  color: rgba(245,247,247,.94) !important;
}
body.dark-mode .content h1,
body.dark-mode .content h2,
body.dark-mode .content h3,
body.dark-mode .content h4,
body.dark-mode .content strong,
body.dark-mode .parts-basket-head h3,
body.dark-mode .parts-basket-item-title,
body.dark-mode .parts-detail-head h3,
body.dark-mode .parts-card h4,
body.dark-mode .parts-admin-card h4,
body.dark-mode .parts-admin-head h3,
body.dark-mode .info-card .label {
  color: #ffffff !important;
}


/* 2026-04-26 V3 — final contents/menu contrast overrides */
html, body { scroll-behavior: auto; }
body .toc-chapter.active,
body .toc-chapter.active .ch-label,
body .toc-chapter.active .ch-caret,
body .toc-chapter.active .ch-num,
body .toc-subs a.active,
body .toc-subs a:hover {
  color: var(--brand-ink) !important;
}
body .toc-subs a.active,
body .toc-subs a:hover {
  background: rgba(201,146,46,.22) !important;
  border-left-color: var(--brand-gold) !important;
}
body.dark-mode .toc-subs a,
body.dark-mode .toc-chapter,
body.dark-mode .toc-chapter .ch-label,
body.dark-mode .toc-chapter .ch-caret,
body.dark-mode .sidebar-title,
body.dark-mode .sidebar-mode-label {
  color: #f5f7f7 !important;
}
body.dark-mode .toc-chapter.active {
  background: var(--brand-gold) !important;
}
body.dark-mode .toc-subs a.active,
body.dark-mode .toc-subs a:hover {
  color: var(--brand-ink) !important;
  background: rgba(201,146,46,.28) !important;
}
body .workspace-tab.active,
body .workspace-card.active {
  color: var(--brand-ink) !important;
}
body .workspace-tab.active strong,
body .workspace-card.active strong,
body .workspace-card.active span,
body .workspace-tab.active span {
  color: var(--brand-ink) !important;
}
body:not(.dark-mode) .content,
body:not(.dark-mode) .content p,
body:not(.dark-mode) .content li,
body:not(.dark-mode) .content td,
body:not(.dark-mode) .content th,
body:not(.dark-mode) .content h1,
body:not(.dark-mode) .content h2,
body:not(.dark-mode) .content h3,
body:not(.dark-mode) .content h4,
body:not(.dark-mode) .card-title,
body:not(.dark-mode) .info-card .value,
body:not(.dark-mode) .parts-hero-card h1,
body:not(.dark-mode) .parts-hero-card p,
body:not(.dark-mode) .parts-curated-title,
body:not(.dark-mode) .parts-assembly-title,
body:not(.dark-mode) .parts-basket-item-title,
body:not(.dark-mode) .parts-basket-cta h4 {
  color: var(--brand-ink) !important;
}
body.dark-mode .content,
body.dark-mode .content p,
body.dark-mode .content li,
body.dark-mode .content td,
body.dark-mode .content th,
body.dark-mode .content h1,
body.dark-mode .content h2,
body.dark-mode .content h3,
body.dark-mode .content h4,
body.dark-mode .card-title,
body.dark-mode .info-card .value,
body.dark-mode .parts-curated-title,
body.dark-mode .parts-assembly-title,
body.dark-mode .parts-basket-item-title {
  color: #f5f7f7 !important;
}


/* 2026-04-26 V4 — admin exports, quick parts lookup, black non-header accent headings */
.parts-quick-search-card {
  margin: 24px 28px 0;
  padding: 24px 26px;
  border-radius: 22px;
  background: rgba(255,255,255,.96);
  border: 1px solid rgba(13,31,34,.08);
  box-shadow: var(--shadow-md);
}
.parts-quick-search-head h2 {
  margin: 8px 0 10px;
  font-family: 'Merriweather', Georgia, serif;
  color: var(--brand-deeper);
  text-transform: uppercase;
  line-height: 1.14;
}
.parts-quick-search-head p {
  margin: 0;
  color: var(--text-muted);
  max-width: 72ch;
}
.parts-quick-search-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}
.parts-quick-search-row {
  display: flex;
  gap: 10px;
  align-items: center;
}
.parts-quick-search-row .parts-search-input {
  flex: 1 1 auto;
  min-width: 0;
}
.parts-admin-lookup {
  margin-bottom: 10px;
}
.parts-quick-search-head .eyebrow,
.parts-quick-search-card .parts-basket-field > span,
.workspace-card-eyebrow,
.parts-search-label,
.info-card .label,
.content .label,
.content label,
.content .eyebrow,
.parts-admin-card h4,
.parts-admin-head .eyebrow,
.parts-admin-selection {
  color: #000 !important;
  font-weight: 800 !important;
}
body.dark-mode .parts-quick-search-card {
  background: #f4f6f5;
  border-color: rgba(13,31,34,.12);
}
body.dark-mode .parts-quick-search-head h2,
body.dark-mode .parts-quick-search-head p,
body.dark-mode .parts-quick-search-head .eyebrow,
body.dark-mode .parts-quick-search-card .parts-basket-field > span,
body.dark-mode .parts-admin-lookup span,
body.dark-mode .parts-admin-selection,
body.dark-mode .parts-admin-card h4 {
  color: #000 !important;
}
@media (max-width: 860px) {
  .parts-quick-search-grid {
    grid-template-columns: 1fr;
  }
  .parts-quick-search-row {
    flex-direction: column;
    align-items: stretch;
  }
}
@media (max-width: 640px) {
  .parts-quick-search-card {
    margin: 20px 18px 0;
    padding: 18px;
  }
}


/* 2026-04-26 V5 — move quick search, dark-panel contrast repair, in-app video */
.page-header .eyebrow,
.parts-hero-card .eyebrow,
.chapter-intro .eyebrow,
.cta-bar .eyebrow,
.register-bar .register-eyebrow,
.video-eyebrow,
.parts-basket-cta .eyebrow,
.video-badge {
  color: #e6b24a !important;
}
body:not(.dark-mode) .page-header h1,
body:not(.dark-mode) .parts-hero-card h2,
body:not(.dark-mode) .chapter-intro h1,
body:not(.dark-mode) .video-card .video-title,
body:not(.dark-mode) .parts-basket-cta h4,
body:not(.dark-mode) .cta-bar h3,
body:not(.dark-mode) .register-headline,
body.dark-mode .page-header h1,
body.dark-mode .parts-hero-card h2,
body.dark-mode .chapter-intro h1,
body.dark-mode .video-card .video-title,
body.dark-mode .parts-basket-cta h4,
body.dark-mode .cta-bar h3,
body.dark-mode .register-headline {
  color: #ffffff !important;
}
body:not(.dark-mode) .page-header p,
body:not(.dark-mode) .parts-hero-card p,
body:not(.dark-mode) .chapter-intro p,
body:not(.dark-mode) .video-card p,
body:not(.dark-mode) .parts-basket-cta p,
body:not(.dark-mode) .cta-bar p,
body:not(.dark-mode) .register-sub,
body.dark-mode .page-header p,
body.dark-mode .parts-hero-card p,
body.dark-mode .chapter-intro p,
body.dark-mode .video-card p,
body.dark-mode .parts-basket-cta p,
body.dark-mode .cta-bar p,
body.dark-mode .register-sub {
  color: rgba(255,255,255,.92) !important;
}
body:not(.dark-mode) .page-header,
body:not(.dark-mode) .parts-hero-card,
body:not(.dark-mode) .chapter-intro,
body:not(.dark-mode) .video-card,
body:not(.dark-mode) .parts-basket-cta,
body:not(.dark-mode) .cta-bar,
body:not(.dark-mode) .register-bar,
body.dark-mode .page-header,
body.dark-mode .parts-hero-card,
body.dark-mode .chapter-intro,
body.dark-mode .video-card,
body.dark-mode .parts-basket-cta,
body.dark-mode .cta-bar,
body.dark-mode .register-bar {
  background: linear-gradient(180deg, rgba(10,24,27,.98) 0%, rgba(30,67,72,.97) 100%) !important;
  color: #ffffff !important;
}
body:not(.dark-mode) .workspace-card-eyebrow,
body:not(.dark-mode) .parts-search-label,
body:not(.dark-mode) .info-card .label,
body:not(.dark-mode) .parts-basket-field > span,
body:not(.dark-mode) .parts-admin-card h4,
body:not(.dark-mode) .parts-admin-head .eyebrow,
body:not(.dark-mode) .parts-admin-selection,
body:not(.dark-mode) .parts-quick-search-head .eyebrow,
body:not(.dark-mode) .parts-quick-search-card .parts-basket-field > span,
body:not(.dark-mode) .content .label {
  color: #000 !important;
  font-weight: 800 !important;
}
body.dark-mode .workspace-card-eyebrow,
body.dark-mode .parts-search-label,
body.dark-mode .info-card .label,
body.dark-mode .parts-basket-field > span,
body.dark-mode .parts-admin-card h4,
body.dark-mode .parts-admin-head .eyebrow,
body.dark-mode .parts-admin-selection,
body.dark-mode .parts-quick-search-head .eyebrow,
body.dark-mode .parts-quick-search-card .parts-basket-field > span,
body.dark-mode .content .label {
  color: #000 !important;
  font-weight: 800 !important;
}
.video-embed-wrap {
  position: relative;
  width: 100%;
  border-radius: 18px;
  overflow: hidden;
  min-height: 260px;
  background: #081113;
  box-shadow: var(--shadow-md);
}
.video-embed {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  min-height: 260px;
  border: 0;
  background: #081113;
}
.video-card .btn-pill-light.primary {
  background: var(--brand-gold) !important;
  color: var(--brand-ink) !important;
  border-color: var(--brand-gold) !important;
}
.video-card .btn-pill-light:not(.primary) {
  color: #ffffff !important;
  border-color: rgba(255,255,255,.2) !important;
}
.video-card .btn-pill-light:not(.primary):hover {
  color: var(--brand-ink) !important;
}
.parts-quick-search-card {
  margin: 26px 0 30px !important;
}
body .workspace-launcher + .register-bar {
  margin-top: 24px;
}
@media (max-width: 860px) {
  .video-embed-wrap,
  .video-embed {
    min-height: 220px;
  }
}
@media (max-width: 640px) {
  .video-embed-wrap,
  .video-embed {
    min-height: 190px;
  }
  .parts-quick-search-card {
    margin: 20px 0 24px !important;
  }
}


/* 2026-04-26 V6 — baseline local diagrams, zoom, print */
.parts-detail-actions {
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  justify-content:flex-end;
  align-items:center;
}
.parts-diagram-frame {
  display:grid;
  gap:12px;
}
.parts-diagram-frame img {
  width:100%;
  max-height:72vh;
  object-fit:contain;
  background:#ffffff;
  border:1px solid rgba(37,74,79,.14);
  cursor:zoom-in;
}
.parts-diagram-fallback {
  border:1px dashed rgba(37,74,79,.24);
  border-radius:14px;
  background:rgba(37,74,79,.04);
  color:var(--text-muted);
}
.parts-detail-actions .btn-pill[disabled] {
  opacity:.52;
  cursor:not-allowed;
  pointer-events:none;
}
.parts-diagram-modal[hidden] { display:none !important; }
.parts-diagram-modal {
  position:fixed;
  inset:0;
  z-index:1200;
  display:grid;
  place-items:center;
  padding:24px;
}
.parts-diagram-modal-backdrop {
  position:absolute;
  inset:0;
  background:rgba(3,10,12,.72);
  backdrop-filter:blur(4px);
}
.parts-diagram-modal-panel {
  position:relative;
  width:min(1200px, calc(100vw - 32px));
  max-height:calc(100vh - 32px);
  overflow:auto;
  border-radius:22px;
  background:var(--paper);
  border:1px solid var(--page-border);
  box-shadow:0 20px 60px rgba(0,0,0,.3);
  padding:20px;
}
.parts-diagram-modal-head {
  display:flex;
  justify-content:space-between;
  gap:16px;
  align-items:flex-start;
  margin-bottom:16px;
}
.parts-diagram-modal-body {
  background:linear-gradient(180deg, rgba(37,74,79,.06), rgba(37,74,79,.02));
  border:1px solid var(--page-border);
  border-radius:18px;
  padding:16px;
}
.parts-diagram-modal-body img {
  display:block;
  width:100%;
  height:auto;
  max-height:calc(100vh - 220px);
  object-fit:contain;
  background:#ffffff;
  border-radius:12px;
}
body.diagram-modal-open { overflow:hidden; }
body.dark-mode .parts-diagram-frame img,
body.dark-mode .parts-diagram-modal-body img {
  background:#ffffff;
}
@media print {
  .parts-diagram-modal,
  .parts-detail-actions {
    display:none !important;
  }
}
@media (max-width: 860px) {
  .parts-detail-head,
  .parts-diagram-modal-head {
    flex-direction:column;
  }
  .parts-detail-actions {
    justify-content:flex-start;
  }
  .parts-diagram-modal {
    padding:12px;
  }
  .parts-diagram-modal-panel {
    width:min(100vw - 12px, 1000px);
    max-height:calc(100vh - 12px);
    padding:16px;
  }
  .parts-diagram-frame img {
    max-height:58vh;
  }
}


/* 2026-04-26 V6 — baseline parts diagrams, clickable control jumps, hotspot alignment, nav contrast */
.control-jump-note {
  display: inline-block;
  margin-left: 0.25rem;
  color: var(--brand-dark);
  font-weight: 800;
}
body.dark-mode .control-jump-note {
  color: #f5f7f7;
}
.control-jump-grid .info-card-link {
  display: block;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}
.control-jump-grid .info-card-link:hover,
.control-jump-grid .info-card-link:focus-visible {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--brand-dark);
}
.control-jump-grid .info-card-link:focus-visible {
  outline: 3px solid rgba(230,178,74,.55);
  outline-offset: 2px;
}
.control-jump-grid .info-card-link .value {
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.16em;
}
.parts-callout.compact .btn-pill {
  background: linear-gradient(135deg, rgba(30,67,72,.98), rgba(13,31,34,.98)) !important;
  color: #ffffff !important;
  border-color: rgba(13,31,34,.9) !important;
}
.parts-callout.compact .btn-pill:hover {
  background: var(--brand-gold) !important;
  color: var(--brand-ink) !important;
  border-color: var(--brand-gold) !important;
}
.hotspot {
  transform: translate(-50%, -50%);
}
.hotspot:hover {
  transform: translate(-50%, -50%) scale(1.16);
}
.hotspot.active {
  transform: translate(-50%, -50%) scale(1.22);
}
.section-nav a.next,
body.dark-mode .section-nav a.next,
body:not(.dark-mode) .section-nav a.next {
  background: linear-gradient(135deg, rgba(30,67,72,.98), rgba(13,31,34,.98)) !important;
  border-color: rgba(13,31,34,.92) !important;
  color: #ffffff !important;
}
.section-nav a.next .sn-label,
body.dark-mode .section-nav a.next .sn-label,
body:not(.dark-mode) .section-nav a.next .sn-label {
  color: #f3d48a !important;
}
.section-nav a.next .sn-title,
body.dark-mode .section-nav a.next .sn-title,
body:not(.dark-mode) .section-nav a.next .sn-title {
  color: #ffffff !important;
}

/* 2026-04-26 V7 — keyboard-ready navigation, tighter dashboard hotspots, temperature note */
.tile[role="button"],
.chapter-card[role="button"] {
  outline: none;
}
.tile[role="button"]:focus-visible,
.chapter-card[role="button"]:focus-visible,
.workspace-card:focus-visible {
  outline: 3px solid rgba(230,178,74,.68);
  outline-offset: 3px;
}
.hotspot[data-hotspot-tier="top"] {
  width: 24px;
  height: 24px;
  border-width: 2px;
  box-shadow: 0 0 0 2px var(--brand-gold), 0 3px 10px rgba(0,0,0,.22);
}
.hotspot[data-hotspot-tier="top"]:hover {
  transform: translate(-50%, -50%) scale(1.12);
}
.hotspot[data-hotspot-tier="top"].active {
  transform: translate(-50%, -50%) scale(1.18);
}
.inline-support-note {
  margin: .45rem 0 .75rem;
  padding: .7rem .85rem;
  border-left: 4px solid var(--brand-gold);
  border-radius: 10px;
  background: rgba(230,178,74,.12);
  color: var(--brand-ink);
  font-size: .92rem;
}
body.dark-mode .inline-support-note {
  background: rgba(230,178,74,.18);
  color: #f5f7f7;
}

/* 2026-04-26 V8 — selected-card contrast, table header contrast, compact mobile header */
body:not(.dark-mode) .parts-assembly-card.active .parts-assembly-title,
body.dark-mode .parts-assembly-card.active .parts-assembly-title,
.parts-assembly-card.active .parts-assembly-title {
  color: #FFFFFF !important;
}
body:not(.dark-mode) .parts-assembly-card.active .parts-assembly-meta,
body:not(.dark-mode) .parts-assembly-card.active .parts-assembly-count,
body.dark-mode .parts-assembly-card.active .parts-assembly-meta,
body.dark-mode .parts-assembly-card.active .parts-assembly-count,
.parts-assembly-card.active .parts-assembly-meta,
.parts-assembly-card.active .parts-assembly-count {
  color: rgba(255,255,255,.92) !important;
}
body:not(.dark-mode) .parts-assembly-card.active .parts-assembly-code,
body.dark-mode .parts-assembly-card.active .parts-assembly-code,
.parts-assembly-card.active .parts-assembly-code {
  color: var(--brand-gold) !important;
}
body:not(.dark-mode) .content table thead th,
body.dark-mode .content table thead th,
.content table thead th,
.content thead th {
  color: #FFFFFF !important;
  -webkit-text-fill-color: #FFFFFF;
  background: transparent !important;
  text-shadow: 0 1px 0 rgba(0,0,0,.18);
}
.parts-detail-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}
.parts-detail-actions .btn-pill,
.parts-hero-actions .btn-pill,
.parts-basket-cta .btn-pill,
.parts-page-chip,
.workspace-tab,
.sidebar-reveal {
  min-width: 0;
  max-width: 100%;
  white-space: normal;
  overflow-wrap: anywhere;
  word-break: break-word;
  text-align: center;
}
@media (max-width: 860px) {
  .topbar {
    border-bottom-width: 1px !important;
  }
  .topbar-inner {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 8px;
    padding: 8px 10px;
    align-items: center;
  }
  .brand-lockup {
    gap: 8px;
    min-width: 0;
  }
  .brand-divider {
    display: none;
  }
  .brand-logo {
    height: 30px;
  }
  .brand-logo img {
    max-width: 104px;
  }
  .brand-text {
    min-width: 0;
  }
  .brand-text .line1 {
    font-size: .5rem;
    letter-spacing: .14em;
    line-height: 1.05;
  }
  .brand-text .line2 {
    font-size: .72rem;
    line-height: 1.05;
    white-space: normal;
    overflow-wrap: anywhere;
  }
  .topbar-actions {
    gap: 6px;
    flex-wrap: nowrap;
    justify-content: flex-end;
  }
  .topbar-actions .iconbtn {
    width: 34px;
    height: 34px;
  }
  .topbar-actions .btn-pill.primary,
  #btnBookmark,
  .topbar-actions button[onclick="window.print()"] {
    display: none !important;
  }
  .workspace-switcher,
  .search-wrap {
    grid-column: 1 / -1;
    width: 100%;
    max-width: 100%;
    margin: 0;
  }
  .workspace-switcher {
    order: 3;
  }
  .search-wrap {
    order: 4;
  }
  .workspace-tab {
    flex: 1 1 0;
    padding: 8px 10px;
    font-size: .62rem;
    letter-spacing: .05em;
    line-height: 1.15;
  }
  .search-input {
    font-size: .84rem;
    padding: 9px 12px 9px 36px;
  }
  .search-icon {
    left: 12px;
    width: 15px;
    height: 15px;
  }
  .sidebar-reveal {
    left: 8px;
    top: 70px;
    padding: 7px 10px;
    font-size: .62rem;
    line-height: 1;
    box-shadow: 0 6px 14px rgba(0,0,0,.16);
  }
}
@media (max-width: 640px) {
  .topbar-inner {
    padding: 7px 8px;
    gap: 7px;
  }
  .brand-logo {
    height: 26px;
  }
  .brand-logo img {
    max-width: 92px;
  }
  .brand-text .line1 {
    font-size: .46rem;
  }
  .brand-text .line2 {
    font-size: .66rem;
  }
  .workspace-switcher {
    padding: 3px;
  }
  .workspace-tab {
    padding: 7px 8px;
    font-size: .58rem;
  }
  .search-input {
    font-size: .8rem;
  }
  .parts-detail-head {
    gap: 12px;
  }
  .parts-detail-actions {
    width: 100%;
  }
  .parts-detail-actions .btn-pill {
    flex: 1 1 100%;
    justify-content: center;
  }
  .sidebar-reveal {
    top: 64px;
    left: 6px;
    padding: 6px 8px;
    font-size: .58rem;
  }
}

/* 2026-04-26 V9 — assembly toolbar alignment + mobile header/icon tightening */
.parts-detail-summary {
  min-width: 0;
}
.parts-detail-head {
  display: block !important;
  margin-bottom: 6px !important;
}
.parts-detail-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 10px 12px;
  margin-bottom: 14px;
}
.parts-page-chips {
  flex: 1 1 320px;
  margin-bottom: 0 !important;
  min-width: 0;
}
.parts-detail-actions {
  flex: 0 1 auto;
  justify-content: flex-end;
  align-self: flex-end;
  margin-top: 0 !important;
}
.parts-detail-actions .btn-pill {
  min-height: 40px;
  align-items: center;
  justify-content: center;
}
body:not(.dark-mode) .parts-assembly-card.active .parts-assembly-title,
body:not(.dark-mode) .parts-assembly-card.active .parts-assembly-code,
body:not(.dark-mode) .parts-assembly-card.active .parts-assembly-meta,
body:not(.dark-mode) .parts-assembly-card.active .parts-assembly-count,
body.dark-mode .parts-assembly-card.active .parts-assembly-title,
body.dark-mode .parts-assembly-card.active .parts-assembly-code,
body.dark-mode .parts-assembly-card.active .parts-assembly-meta,
body.dark-mode .parts-assembly-card.active .parts-assembly-count,
.parts-assembly-card.active .parts-assembly-title,
.parts-assembly-card.active .parts-assembly-code,
.parts-assembly-card.active .parts-assembly-meta,
.parts-assembly-card.active .parts-assembly-count {
  color: #FFFFFF !important;
}
body:not(.dark-mode) .content thead th,
body:not(.dark-mode) .content table thead th,
body.dark-mode .content thead th,
body.dark-mode .content table thead th,
.content thead th,
.content table thead th {
  color: #FFFFFF !important;
  -webkit-text-fill-color: #FFFFFF !important;
  text-shadow: 0 1px 0 rgba(0,0,0,.18);
}
.section-nav a,
.section-nav .sn-title,
.section-nav .sn-label,
.workspace-tab,
.btn-pill,
.parts-page-chip,
.parts-assembly-title,
.toc-chapter .ch-label {
  min-width: 0;
  max-width: 100%;
  white-space: normal;
  overflow-wrap: anywhere;
  word-break: break-word;
}
@media (max-width: 860px) {
  .topbar {
    border-bottom-width: 1px !important;
  }
  .topbar-inner {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 6px;
    padding: 8px 10px 8px 54px;
    align-items: center;
  }
  .brand-lockup {
    gap: 7px;
    min-width: 0;
  }
  .brand-divider {
    display: none;
  }
  .brand-logo {
    height: 28px;
  }
  .brand-logo img {
    max-width: 98px;
  }
  .brand-text {
    min-width: 0;
  }
  .brand-text .line1 {
    font-size: .48rem;
    letter-spacing: .12em;
    line-height: 1.02;
  }
  .brand-text .line2 {
    font-size: .68rem;
    line-height: 1.04;
    white-space: normal;
    overflow-wrap: anywhere;
    margin-top: 1px;
  }
  .topbar-actions {
    gap: 5px;
    flex-wrap: nowrap;
    justify-content: flex-end;
  }
  .topbar-actions .iconbtn {
    width: 32px;
    height: 32px;
  }
  .topbar-actions .btn-pill.primary,
  #btnBookmark,
  .topbar-actions button[onclick="window.print()"] {
    display: none !important;
  }
  .workspace-switcher,
  .search-wrap {
    grid-column: 1 / -1;
    width: 100%;
    max-width: 100%;
    margin: 0;
  }
  .workspace-switcher {
    order: 3;
    padding: 3px;
    gap: 3px;
  }
  .search-wrap {
    order: 4;
  }
  .workspace-tab {
    flex: 1 1 0;
    min-height: 38px;
    padding: 7px 8px;
    font-size: .58rem;
    letter-spacing: .04em;
    line-height: 1.1;
  }
  .search-input {
    font-size: .82rem;
    padding: 8px 12px 8px 34px;
  }
  .search-icon {
    left: 11px;
    width: 14px;
    height: 14px;
  }
  .sidebar-reveal {
    position: fixed;
    top: 10px;
    left: 8px;
    width: 38px;
    height: 38px;
    padding: 0;
    border-radius: 12px;
    font-size: 0;
    line-height: 0;
    letter-spacing: 0;
    text-indent: -9999px;
    overflow: hidden;
    box-shadow: 0 6px 14px rgba(0,0,0,.16);
  }
  .sidebar-reveal::before {
    content: '\2630';
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    color: var(--brand-dark);
    font-size: 16px;
    line-height: 1;
    text-indent: 0;
  }
  .section-nav {
    gap: 10px;
  }
  .section-nav a {
    min-width: 0;
    max-width: none;
    padding: 12px 10px;
  }
  .section-nav .sn-label {
    font-size: .58rem;
    letter-spacing: .08em;
  }
  .section-nav .sn-title {
    font-size: .8rem;
    line-height: 1.18;
  }
  .parts-detail-toolbar {
    gap: 10px;
  }
  .parts-page-chips {
    flex-basis: 100%;
  }
  .parts-detail-actions {
    width: 100%;
    justify-content: flex-start;
  }
}
@media (max-width: 640px) {
  .topbar-inner {
    padding: 7px 8px 7px 50px;
    gap: 6px;
  }
  .brand-logo {
    height: 24px;
  }
  .brand-logo img {
    max-width: 88px;
  }
  .brand-text .line1 {
    display: none;
  }
  .brand-text .line2 {
    font-size: .64rem;
    margin-top: 0;
  }
  .workspace-switcher {
    padding: 2px;
    gap: 2px;
  }
  .workspace-tab {
    min-height: 36px;
    padding: 7px 6px;
    font-size: .54rem;
    line-height: 1.08;
  }
  .search-input {
    font-size: .78rem;
    padding: 8px 10px 8px 32px;
  }
  .parts-detail-toolbar {
    margin-bottom: 12px;
  }
  .parts-detail-actions {
    width: 100%;
  }
  .parts-detail-actions .btn-pill {
    flex: 1 1 100%;
  }
  .sidebar-reveal {
    top: 8px;
    left: 6px;
    width: 36px;
    height: 36px;
  }
  .sidebar-reveal::before {
    font-size: 15px;
  }
  .section-nav {
    flex-direction: column;
  }
  .section-nav a,
  .section-nav a.next {
    max-width: 100%;
    text-align: left;
  }
}

/* 2026-04-26 V10 — compact empty state, safer hidden states, denser admin modal */
#partsDetail[hidden],
#partsDetailEmpty[hidden] {
  display: none !important;
}
#partsDetail:not([hidden]) {
  display: block;
}
.parts-detail-empty {
  min-height: 0 !important;
  display: block;
  padding: 4px 0 10px;
  text-align: left;
}
.parts-detail-empty h3 {
  margin-bottom: 4px;
}
.parts-detail-empty p {
  margin: 0;
  max-width: 48rem;
}
.parts-detail-toolbar {
  margin-top: 2px;
}
.parts-admin-panel {
  width: min(1120px, calc(100vw - 36px));
  max-height: min(88vh, 980px);
  padding: 18px;
}
.parts-admin-head {
  margin-bottom: 12px;
}
.parts-admin-grid {
  gap: 12px;
}
.parts-admin-card {
  padding: 16px;
}
.parts-admin-actions {
  gap: 8px;
  margin-top: 10px;
}
.parts-admin-upload-stack,
.parts-admin-form-grid {
  gap: 10px;
}
.parts-admin-copy,
.parts-admin-helper,
.parts-admin-selection,
.parts-admin-status {
  line-height: 1.45;
}
@media (max-width: 860px) {
  .parts-detail-empty {
    padding: 2px 0 8px;
  }
  .parts-detail-actions {
    gap: 8px;
  }
  .parts-admin-panel {
    width: min(100vw - 18px, 1000px);
    max-height: 92vh;
    padding: 14px;
  }
}

/* 2026-04-26 V10 — compact empty state, safer hidden states, denser admin modal */
#partsDetail[hidden],
#partsDetailEmpty[hidden] {
  display: none !important;
}
#partsDetail:not([hidden]) {
  display: block;
}
.parts-detail-empty {
  min-height: 0 !important;
  display: block;
  padding: 4px 0 10px;
  text-align: left;
}
.parts-detail-empty h3 {
  margin-bottom: 4px;
}
.parts-detail-empty p {
  margin: 0;
  max-width: 48rem;
}
.parts-detail-toolbar {
  margin-top: 2px;
}
.workspace-parts .topbar-actions button[onclick="window.print()"] {
  display: none !important;
}
.parts-admin-panel {
  width: min(1120px, calc(100vw - 36px));
  max-height: min(88vh, 980px);
  padding: 18px;
}
.parts-admin-head {
  margin-bottom: 12px;
}
.parts-admin-grid {
  gap: 12px;
}
.parts-admin-card {
  padding: 16px;
}
.parts-admin-actions {
  gap: 8px;
  margin-top: 10px;
}
.parts-admin-upload-stack,
.parts-admin-form-grid {
  gap: 10px;
}
.parts-admin-copy,
.parts-admin-helper,
.parts-admin-selection,
.parts-admin-status {
  line-height: 1.45;
}
@media (max-width: 860px) {
  .parts-detail-empty {
    padding: 2px 0 8px;
  }
  .parts-detail-actions {
    gap: 8px;
  }
  .parts-admin-panel {
    width: min(100vw - 18px, 1000px);
    max-height: 92vh;
    padding: 14px;
  }
}


/* 2026-04-26 V11 — mobile visibility, persistent navigation, basket shortcut */
.sidebar-reveal,
.sidebar-reveal::before {
  color: #FFFFFF !important;
  -webkit-text-fill-color: #FFFFFF !important;
}
.parts-diagram-modal-head {
  position: sticky;
  top: 0;
  z-index: 4;
  background: var(--paper);
  padding: 4px 56px 12px 0;
  margin-bottom: 14px;
}
.parts-diagram-modal-head .parts-detail-actions {
  position: relative;
  align-items: center;
}
.parts-diagram-modal-head [data-diagram-modal-close="true"] {
  position: absolute;
  top: 4px;
  right: 0;
  min-width: 44px;
  min-height: 44px;
  padding: 10px 14px;
  border-radius: 999px;
  z-index: 5;
}
.floating-utility-btn {
  position: fixed;
  bottom: 16px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 14px;
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(30,67,72,.98), rgba(13,31,34,.98));
  color: #FFFFFF;
  box-shadow: 0 12px 28px rgba(0,0,0,.22);
  font-size: .88rem;
  font-weight: 700;
  line-height: 1;
  z-index: 1305;
}
.floating-utility-btn:hover,
.floating-utility-btn:focus-visible {
  background: linear-gradient(135deg, rgba(230,178,74,.98), rgba(214,159,43,.98));
  color: var(--brand-ink);
  border-color: rgba(230,178,74,.95);
  outline: none;
}
#globalBackButton {
  left: 16px;
}
#partsBasketQuickOpen {
  right: 16px;
}
#partsBasketQuickOpen[hidden] {
  display: none !important;
}
.floating-basket-badge {
  display: inline-grid;
  place-items: center;
  min-width: 24px;
  height: 24px;
  padding: 0 6px;
  border-radius: 999px;
  background: var(--brand-gold);
  color: var(--brand-ink);
  font-size: .76rem;
  font-weight: 800;
}
@media (max-width: 860px) {
  .parts-diagram-modal-head {
    padding-right: 52px;
  }
  .parts-diagram-modal-head .parts-detail-actions {
    width: 100%;
    padding-top: 4px;
  }
  .parts-diagram-modal-head [data-diagram-modal-close="true"] {
    top: 0;
    right: 0;
  }
}
@media (max-width: 640px) {
  .parts-diagram-modal {
    padding: 8px;
  }
  .parts-diagram-modal-panel {
    width: calc(100vw - 8px);
    max-height: calc(100vh - 8px);
    padding: 12px;
    border-radius: 18px;
  }
  .parts-diagram-modal-head {
    padding: 4px 52px 10px 0;
    margin-bottom: 10px;
  }
  .parts-diagram-modal-head .parts-detail-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
  }
  .parts-diagram-modal-head .parts-detail-actions .btn-pill:not([data-diagram-modal-close="true"]) {
    flex: 1 1 100%;
  }
  .parts-diagram-modal-head [data-diagram-modal-close="true"] {
    min-width: 40px;
    min-height: 40px;
    padding: 8px 12px;
    font-size: .74rem;
  }
  .toc-chapter[data-chapter="ch6"] .ch-label,
  .toc-chapter[data-chapter="ch8"] .ch-label {
    font-size: .66rem;
    line-height: 1.08;
  }
  .section-nav a[data-nav="ch6"] .sn-title,
  .section-nav a[data-nav="ch8"] .sn-title {
    font-size: .74rem;
    line-height: 1.08;
  }
  .floating-utility-btn {
    bottom: 12px;
    min-height: 40px;
    padding: 9px 12px;
    font-size: .8rem;
  }
  #globalBackButton {
    left: 12px;
  }
  #partsBasketQuickOpen {
    right: 12px;
  }
  .floating-basket-badge {
    min-width: 22px;
    height: 22px;
    font-size: .72rem;
  }
}


/* 2026-04-26 V12 — iOS/mobile parts table + active assembly contrast */
@media (max-width: 860px) {
  body:not(.dark-mode) .parts-assembly-card.active .parts-assembly-title,
  body.dark-mode .parts-assembly-card.active .parts-assembly-title,
  .parts-assembly-card.active .parts-assembly-title {
    color: #FFFFFF !important;
    -webkit-text-fill-color: #FFFFFF !important;
    text-shadow: 0 1px 0 rgba(0,0,0,.12);
  }
  body:not(.dark-mode) .parts-assembly-card.active .parts-assembly-meta,
  body:not(.dark-mode) .parts-assembly-card.active .parts-assembly-count,
  body.dark-mode .parts-assembly-card.active .parts-assembly-meta,
  body.dark-mode .parts-assembly-card.active .parts-assembly-count,
  .parts-assembly-card.active .parts-assembly-meta,
  .parts-assembly-card.active .parts-assembly-count {
    color: rgba(255,255,255,.92) !important;
    -webkit-text-fill-color: rgba(255,255,255,.92) !important;
  }
  body:not(.dark-mode) .parts-assembly-card.active .parts-assembly-code,
  body.dark-mode .parts-assembly-card.active .parts-assembly-code,
  .parts-assembly-card.active .parts-assembly-code {
    color: var(--brand-gold) !important;
    -webkit-text-fill-color: var(--brand-gold) !important;
  }
}
@media (max-width: 640px) {
  .parts-table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  .parts-table {
    min-width: 620px;
  }
  .parts-table th:nth-child(6),
  .parts-table td:nth-child(6) {
    width: 92px !important;
    min-width: 92px !important;
    white-space: nowrap !important;
    overflow-wrap: normal !important;
    word-break: keep-all !important;
  }
  .parts-table th:nth-child(6) {
    writing-mode: horizontal-tb !important;
    text-orientation: mixed !important;
  }
  .parts-action-cell {
    flex-direction: row;
    justify-content: center;
    align-items: center;
  }
  .parts-add-btn {
    min-height: 38px;
    max-width: 124px;
    padding: 8px 14px;
    font-size: .84rem;
    line-height: 1;
  }
  .parts-qty-stepper {
    max-width: 124px;
    grid-template-columns: 28px minmax(24px,1fr) 28px;
    padding: 3px;
  }
  .parts-qty-btn {
    width: 26px;
    height: 26px;
  }
}


/* 2026-04-26 V13 — TOC fallback + remove light teal text accents */
#toc,
#toc .toc-chapter,
#toc .toc-chapter *,
#toc .toc-subs a {
  pointer-events: auto;
}

#toc .toc-chapter {
  position: relative;
  z-index: 2;
}

.brand-text .line1,
.search-result .sr-crumb,
.sidebar-mode-label,
.hero .eyebrow,
.workspace-card-eyebrow,
.chapter-intro .eyebrow,
.page-header .eyebrow,
.section-nav a.next .sn-label,
.register-eyebrow,
.content .eyebrow,
.footer a,
body.dark-mode .sidebar-mode-label,
body.dark-mode .footer a {
  color: var(--brand-gold) !important;
}

.toc-subs a.active {
  color: var(--brand-gold-deeper) !important;
  border-left-color: var(--brand-gold) !important;
  background: rgba(230,178,74,0.10) !important;
}

.search-result .sr-crumb {
  color: var(--brand-gold-deeper) !important;
}