/* ==========================================================================
   MotoSpecsLab — 2026 Editorial Design System
   "Factory Service Manual × Campdal Daylight Atelier"
   ========================================================================== */

:root {
  /* Daylight Technical Paper (Default Theme — Harmonized with campdalstudio.com) */
  --bg-canvas: #F6F5F2;
  --bg-surface: #FFFFFF;
  --bg-subtle: #ECEAE4;
  --bg-chip: #E5E2DA;
  --bg-header: rgba(246, 245, 242, 0.92);
  --bg-footer: #EAE8E1;

  --border-hairline: rgba(17, 19, 24, 0.10);
  --border-strong: rgba(17, 19, 24, 0.22);
  --rule-heavy: #111318;

  --text-primary: #111318;
  --text-secondary: #3E4552;
  --text-muted: #666E7E;

  --accent-amber: #B45309;
  --accent-amber-fill: #D97706;
  --accent-amber-soft: rgba(180, 83, 9, 0.08);
  --accent-amber-border: rgba(180, 83, 9, 0.28);

  --accent-blue: #1D4ED8;
  --accent-blue-soft: rgba(29, 78, 216, 0.07);
  --accent-blue-border: rgba(29, 78, 216, 0.26);

  --accent-green: #166534;
  --accent-green-soft: rgba(22, 101, 52, 0.08);
  --accent-green-border: rgba(22, 101, 52, 0.28);

  --accent-danger: #991B1B;
  --accent-danger-soft: rgba(153, 27, 27, 0.07);
  --accent-danger-border: rgba(153, 27, 27, 0.28);

  --cta-primary-bg: #111318;
  --cta-primary-fg: #FFFFFF;
  --cta-primary-hover: #282D3A;

  --shadow-frame: 0 10px 28px rgba(17, 19, 24, 0.06), 0 1px 3px rgba(17, 19, 24, 0.04);

  /* Strict Industrial Corner Radius Discipline (No SaaS Bubble Cards) */
  --radius-xs: 3px;
  --radius-sm: 5px;
  --radius-md: 8px;

  --max-w: 1180px;
  --font-display: 'Plus Jakarta Sans', 'Pretendard Variable', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-sans: 'Pretendard Variable', 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

html[data-theme='moonlit'] {
  --bg-canvas: #0B0E14;
  --bg-surface: #121722;
  --bg-subtle: #181F2E;
  --bg-chip: #1E273A;
  --bg-header: rgba(11, 14, 20, 0.92);
  --bg-footer: #080A0F;

  --border-hairline: rgba(244, 246, 250, 0.10);
  --border-strong: rgba(244, 246, 250, 0.22);
  --rule-heavy: #E2E8F0;

  --text-primary: #F4F6FA;
  --text-secondary: #B4BCCB;
  --text-muted: #7F899C;

  --accent-amber: #F59E0B;
  --accent-amber-fill: #F59E0B;
  --accent-amber-soft: rgba(245, 158, 11, 0.13);
  --accent-amber-border: rgba(245, 158, 11, 0.34);

  --accent-blue: #93C5FD;
  --accent-blue-soft: rgba(147, 197, 253, 0.11);
  --accent-blue-border: rgba(147, 197, 253, 0.30);

  --accent-green: #4ADE80;
  --accent-green-soft: rgba(74, 222, 128, 0.12);
  --accent-green-border: rgba(74, 222, 128, 0.32);

  --accent-danger: #FDA4AF;
  --accent-danger-soft: rgba(253, 164, 175, 0.12);
  --accent-danger-border: rgba(253, 164, 175, 0.32);

  --cta-primary-bg: #F59E0B;
  --cta-primary-fg: #0B0E14;
  --cta-primary-hover: #FBBF24;

  --shadow-frame: 0 16px 36px rgba(0, 0, 0, 0.38);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.65;
  font-size: 16px;
  word-break: keep-all;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.2s ease, color 0.2s ease;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  color: var(--text-primary);
}

a {
  color: var(--accent-blue);
  text-decoration: none;
  transition: color 0.15s ease, background-color 0.15s ease, border-color 0.15s ease;
}

a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 22px;
}

.mono,
.num,
code {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

code {
  font-size: 0.88em;
  background: var(--bg-subtle);
  border: 1px solid var(--border-hairline);
  padding: 1px 5px;
  border-radius: var(--radius-xs);
}

/* Skip Link */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 8px;
  background: var(--cta-primary-bg);
  color: var(--cta-primary-fg);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  z-index: 1000;
}
.skip-link:focus {
  left: 16px;
}

/* ==========================================================================
   1. Sticky Workshop Header & Precision Sight-Glass Brand Mark
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-header);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-strong);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 66px;
  gap: 14px;
  flex-wrap: wrap;
  padding-top: 8px;
  padding-bottom: 8px;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text-primary);
  text-decoration: none;
}
.brand-logo:hover {
  color: var(--text-primary);
  text-decoration: none;
}

.brand-mark-svg {
  width: 30px;
  height: 30px;
  flex-shrink: 0;
  color: var(--text-primary);
  display: block;
}

.brand-wordmark {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.12rem;
  letter-spacing: -0.03em;
  line-height: 1;
}

.brand-divider {
  width: 1px;
  height: 14px;
  background: var(--border-strong);
  display: inline-block;
}

.brand-sub {
  font-size: 0.66rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
}

.main-nav a {
  color: var(--text-secondary);
  font-size: 0.88rem;
  font-weight: 650;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  border-bottom: 2px solid transparent;
  text-decoration: none;
}

.main-nav a:hover,
.main-nav a[aria-current='page'] {
  color: var(--text-primary);
  background: var(--bg-subtle);
  text-decoration: none;
}

.main-nav a[aria-current='page'] {
  border-bottom-color: var(--accent-amber-fill);
  border-bottom-left-radius: 0;
  border-bottom-right-radius: 0;
}

.header-controls {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 32px;
  padding: 0 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  background: var(--bg-surface);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  cursor: pointer;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}
.theme-toggle:hover {
  border-color: var(--accent-amber-fill);
  background: var(--bg-subtle);
}
.theme-toggle svg {
  width: 14px;
  height: 14px;
  color: var(--accent-amber-fill);
  flex-shrink: 0;
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  background: var(--bg-subtle);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 2px;
  gap: 2px;
}

.lang-switch a {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 4px 8px;
  border-radius: var(--radius-xs);
  color: var(--text-muted);
  text-decoration: none;
}

.lang-switch a:hover {
  color: var(--text-primary);
  text-decoration: none;
}

.lang-switch a.active {
  background: var(--bg-surface);
  color: var(--text-primary);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.08);
}

@media (max-width: 1079px) {
  .header-inner {
    min-height: auto;
    gap: 8px;
    padding-top: 8px;
    padding-bottom: 6px;
  }
  .brand-logo {
    order: 1;
  }
  .header-controls {
    order: 2;
    margin-left: auto;
  }
  .main-nav {
    order: 3;
    flex: 1 0 100%;
    width: 100%;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    gap: 4px;
    padding-top: 6px;
    padding-bottom: 2px;
    border-top: 1px solid var(--border-hairline);
  }
  .main-nav::-webkit-scrollbar {
    display: none;
  }
  .main-nav a {
    white-space: nowrap;
    flex-shrink: 0;
    font-size: 0.82rem;
    padding: 4px 8px;
  }
}

@media (min-width: 1080px) {
  .header-inner {
    flex-wrap: nowrap;
    gap: 12px;
  }
  .brand-logo,
  .header-controls {
    flex-shrink: 0;
  }
  .main-nav {
    flex-wrap: nowrap;
    gap: 2px;
  }
  .main-nav a {
    font-size: 0.84rem;
    padding: 6px 8px;
    white-space: nowrap;
  }
}

/* ==========================================================================
   2. Breadcrumbs & Technical Datelines
   ========================================================================== */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--text-muted);
  margin: 18px 0 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-hairline);
}
.breadcrumbs a {
  color: var(--text-secondary);
}
.breadcrumbs span.sep {
  color: var(--border-strong);
}

.doc-dateline {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 10px;
}

/* ==========================================================================
   3. Editorial Hero & Contact-Sheet Photo Frame
   ========================================================================== */
.hero {
  padding: 36px 0 34px;
  border-bottom: 1px solid var(--border-hairline);
  margin-bottom: 28px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  gap: 32px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-amber);
  margin-bottom: 12px;
}
.eyebrow::before {
  content: '';
  width: 14px;
  height: 2px;
  background: var(--accent-amber-fill);
  display: inline-block;
}

.hero h1 {
  font-size: clamp(1.85rem, 3.5vw, 2.7rem);
  font-weight: 800;
  line-height: 1.16;
  margin: 0 0 14px;
  letter-spacing: -0.03em;
}

.hero p.lead {
  color: var(--text-secondary);
  font-size: 1.02rem;
  line-height: 1.7;
  margin: 0 0 22px;
  max-width: 620px;
}

.hero-visual {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-strong);
  background: var(--bg-surface);
  padding: 8px;
  box-shadow: var(--shadow-frame);
}

.hero-visual img {
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-xs);
}

.photo-caption {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  padding: 8px 4px 2px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--text-muted);
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin-top: 24px;
  border-top: 2px solid var(--rule-heavy);
  border-bottom: 1px solid var(--border-strong);
  background: var(--bg-surface);
}

.stat-pill {
  padding: 12px 14px;
  border-right: 1px solid var(--border-hairline);
}
.stat-pill:last-child {
  border-right: none;
}
.stat-pill strong {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}
.stat-pill span {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ==========================================================================
   4. Atomic Citation Capsule (GEO Specification Summary)
   ========================================================================== */
.citation-capsule {
  background: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-top: 2px solid var(--rule-heavy);
  border-left: 4px solid var(--accent-amber-fill);
  border-radius: var(--radius-xs);
  padding: 16px 20px;
  margin: 18px 0 26px;
}

.citation-capsule .capsule-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-amber);
  margin-bottom: 6px;
}

.citation-capsule p {
  margin: 0;
  color: var(--text-primary);
  font-size: 0.96rem;
  line-height: 1.7;
}

/* ==========================================================================
   5. Workshop Tool Panels, Controls & Buttons
   ========================================================================== */
.panel {
  background: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-top: 2px solid var(--rule-heavy);
  border-radius: var(--radius-sm);
  padding: 22px 24px;
  margin-bottom: 28px;
  box-shadow: var(--shadow-frame);
}

.panel-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-hairline);
}

.panel-index {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.71rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-amber);
  margin-bottom: 4px;
}

.panel-header h2,
.section-title {
  margin: 0;
  font-size: 1.32rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin: 40px 0 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--rule-heavy);
}

.section-header a {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
}

.controls-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}

label.field-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  margin-bottom: 6px;
}

input[type='text'],
input[type='search'],
input[type='number'],
select {
  width: 100%;
  background: var(--bg-canvas);
  color: var(--text-primary);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-size: 0.94rem;
  font-family: inherit;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}

input:focus,
select:focus {
  outline: 2px solid var(--accent-amber-fill);
  outline-offset: 1px;
  background: var(--bg-surface);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 0.88rem;
  cursor: pointer;
  border: 1px solid transparent;
  font-family: inherit;
  text-decoration: none;
  transition: background-color 0.15s ease, border-color 0.15s ease, transform 0.12s ease;
}
.btn:hover {
  text-decoration: none;
}

.btn-primary {
  background: var(--cta-primary-bg);
  color: var(--cta-primary-fg);
}
.btn-primary:hover {
  background: var(--cta-primary-hover);
  color: var(--cta-primary-fg);
}

.btn-secondary {
  background: var(--bg-surface);
  color: var(--text-primary);
  border-color: var(--border-strong);
}
.btn-secondary:hover {
  background: var(--bg-subtle);
  border-color: var(--text-primary);
  color: var(--text-primary);
}

.btn-copy {
  background: var(--bg-subtle);
  color: var(--text-primary);
  border: 1px solid var(--border-strong);
  padding: 4px 9px;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  font-weight: 600;
  border-radius: var(--radius-xs);
  cursor: pointer;
  text-decoration: none;
}
.btn-copy:hover {
  border-color: var(--accent-amber-fill);
  background: var(--accent-amber-soft);
  text-decoration: none;
}
.btn-copy.copied {
  color: var(--accent-green);
  border-color: var(--accent-green);
  background: var(--accent-green-soft);
}

/* ==========================================================================
   6. Specification Readout Cells & Industrial Stamped Badges
   ========================================================================== */
.telemetry-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(235px, 1fr));
  gap: 12px;
}

.spec-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-top: 2px solid var(--border-strong);
  border-radius: var(--radius-xs);
  padding: 14px 16px;
}

.spec-card .kicker {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.spec-card .big-val {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.spec-card .sub-val {
  font-size: 0.84rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* Rectangular Stamped Technical Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 2px 7px;
  border-radius: var(--radius-xs);
  font-size: 0.71rem;
  font-weight: 700;
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  white-space: nowrap;
  flex-shrink: 0;
}

.badge-ma {
  background: var(--accent-green-soft);
  color: var(--accent-green);
  border: 1px solid var(--accent-green-border);
}

.badge-mb {
  background: var(--accent-amber-soft);
  color: var(--accent-amber);
  border: 1px solid var(--accent-amber-border);
}

.badge-warn {
  background: var(--accent-danger-soft);
  color: var(--accent-danger);
  border: 1px solid var(--accent-danger-border);
}

.badge-info {
  background: var(--bg-subtle);
  color: var(--text-secondary);
  border: 1px solid var(--border-strong);
}

/* ==========================================================================
   7. Category Contact Sheets & Bike Directory Cards
   ========================================================================== */
.category-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.cat-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  overflow: hidden;
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
  text-decoration: none;
  transition: border-color 0.16s ease, transform 0.16s ease;
}
.cat-card:hover {
  border-color: var(--rule-heavy);
  transform: translateY(-2px);
  text-decoration: none;
}
.cat-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-bottom: 1px solid var(--border-hairline);
}
.cat-card-body {
  padding: 14px 16px;
}
.cat-card-body h3 {
  margin: 4px 0 6px;
  font-size: 1.02rem;
  font-weight: 800;
  letter-spacing: -0.015em;
}
.cat-card-body p {
  margin: 0;
  font-size: 0.82rem;
  line-height: 1.55;
  color: var(--text-muted);
}

.bike-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(272px, 1fr));
  gap: 12px;
}

.bike-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  border-top: 2px solid var(--border-strong);
  border-radius: var(--radius-xs);
  padding: 15px 17px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 12px;
  color: var(--text-primary);
  text-decoration: none;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}
.bike-item:hover {
  border-color: var(--border-strong);
  border-top-color: var(--accent-amber-fill);
  background: var(--bg-surface);
  color: var(--text-primary);
  text-decoration: none;
}
.bike-item-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}
.bike-brand {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent-amber);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
}
.bike-item h3 {
  margin: 5px 0 6px;
  font-size: 1.06rem;
  font-weight: 800;
  letter-spacing: -0.015em;
}
.bike-quick-nums {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--text-secondary);
  padding-top: 10px;
  border-top: 1px solid var(--border-hairline);
}
.bike-quick-nums span {
  background: var(--bg-subtle);
  padding: 2px 7px;
  border-radius: var(--radius-xs);
}

/* ==========================================================================
   8. Ruled Factory Service Manual Spec Tables
   ========================================================================== */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border-strong);
  border-top: 2px solid var(--rule-heavy);
  border-radius: var(--radius-xs);
  background: var(--bg-surface);
  margin: 14px 0 28px;
}

table.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

table.spec-table thead th {
  background: var(--bg-subtle);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border-bottom: 1px solid var(--border-strong);
}

table.spec-table th,
table.spec-table td {
  padding: 11px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border-hairline);
  vertical-align: top;
}

table.spec-table tbody th {
  width: 34%;
  color: var(--text-secondary);
  font-weight: 650;
  background: var(--bg-subtle);
  border-right: 1px solid var(--border-hairline);
}

table.spec-table tr:last-child th,
table.spec-table tr:last-child td {
  border-bottom: none;
}

/* ==========================================================================
   9. Engineering Callouts, FAQs, Checklists & Companion Atelier Card
   ========================================================================== */
.eng-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-left: 3px solid var(--rule-heavy);
  border-radius: var(--radius-xs);
  padding: 18px 20px;
  margin-bottom: 16px;
}
.eng-box.warn {
  border-left-color: var(--accent-danger);
}
.eng-box.tip {
  border-left-color: var(--accent-amber-fill);
}
.eng-box h3 {
  margin: 0 0 8px;
  font-size: 1.04rem;
  font-weight: 800;
}
.eng-box p,
.eng-box li {
  color: var(--text-secondary);
  margin: 0 0 8px;
  line-height: 1.68;
}
.eng-box ul {
  margin: 0;
  padding-left: 20px;
}

.faq-list details {
  background: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  border-top: 1px solid var(--border-strong);
  border-radius: var(--radius-xs);
  padding: 14px 18px;
  margin-bottom: 8px;
}
.faq-list summary {
  cursor: pointer;
  font-weight: 700;
  color: var(--text-primary);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
.faq-list summary::-webkit-details-marker {
  display: none;
}
.faq-list summary::after {
  content: '+';
  font-family: var(--font-mono);
  color: var(--accent-amber);
  font-size: 1.15rem;
}
.faq-list details[open] summary::after {
  content: '−';
}
.faq-list details p {
  margin: 12px 0 0;
  color: var(--text-secondary);
  border-top: 1px solid var(--border-hairline);
  padding-top: 12px;
}

/* Campdal Studio Sister-App Card (MotoPing) */
.motoping-cta {
  background: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-top: 3px solid var(--accent-amber-fill);
  border-radius: var(--radius-sm);
  padding: 24px 26px;
  margin: 36px 0;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 22px;
  align-items: center;
  box-shadow: var(--shadow-frame);
}

.motoping-cta img.mp-icon {
  width: 64px;
  height: 64px;
  border-radius: 14px;
  border: 1px solid var(--border-hairline);
}

.motoping-cta h3 {
  margin: 4px 0 6px;
  font-size: 1.18rem;
  font-weight: 800;
}

.motoping-cta p {
  margin: 0 0 14px;
  color: var(--text-secondary);
  font-size: 0.93rem;
}

.mp-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.mp-qrs {
  display: flex;
  gap: 10px;
}
.mp-qrs figure {
  margin: 0;
  text-align: center;
  background: #FFFFFF;
  border: 1px solid rgba(17, 19, 24, 0.14);
  padding: 6px;
  border-radius: var(--radius-xs);
}
.mp-qrs img {
  width: 60px;
  height: 60px;
}
.mp-qrs figcaption {
  color: #111318;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  margin-top: 3px;
}

/* T-CLOCS Checklist */
.check-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 10px;
}
.check-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  background: var(--bg-canvas);
  border: 1px solid var(--border-hairline);
  padding: 12px 14px;
  border-radius: var(--radius-xs);
  cursor: pointer;
}
.check-item input[type='checkbox'] {
  margin-top: 4px;
  width: 17px;
  height: 17px;
  accent-color: var(--accent-green);
}

/* ==========================================================================
   10. Footer & Prose Articles
   ========================================================================== */
.site-footer {
  margin-top: 60px;
  border-top: 2px solid var(--rule-heavy);
  background: var(--bg-footer);
  padding: 40px 0 32px;
  color: var(--text-muted);
  font-size: 0.86rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 24px;
  margin-bottom: 28px;
}

.site-footer h4 {
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  margin: 0 0 10px;
  font-size: 0.8rem;
}

.site-footer ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.site-footer li {
  margin-bottom: 7px;
}
.site-footer a {
  color: var(--text-secondary);
}
.site-footer a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  border-top: 1px solid var(--border-hairline);
  padding-top: 18px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
}

.prose {
  max-width: 820px;
}
.prose h1 {
  font-size: clamp(1.65rem, 3vw, 2.3rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.22;
  margin: 0 0 14px;
}
.prose h2 {
  font-size: 1.28rem;
  font-weight: 800;
  margin: 32px 0 10px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border-hairline);
}
.prose p,
.prose li {
  color: var(--text-secondary);
  font-size: 0.99rem;
  line-height: 1.76;
}

/* Studio Crest Seal on /about/ */
.studio-seal-row {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 16px 20px;
  background: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  margin: 18px 0 24px;
}
.studio-seal-row img {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-hairline);
  flex-shrink: 0;
}

@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .category-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .motoping-cta {
    grid-template-columns: 1fr;
  }
  .mp-qrs {
    display: none;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 600px) {
  .brand-divider,
  .brand-sub,
  .theme-toggle span[data-theme-label] {
    display: none;
  }
  .hero-stats {
    grid-template-columns: 1fr;
  }
  .stat-pill {
    border-right: none;
    border-bottom: 1px solid var(--border-hairline);
  }
  .stat-pill:last-child {
    border-bottom: none;
  }
  .category-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }
  table.spec-table tbody th {
    width: 42%;
  }
}

@media print {
  .site-header,
  .site-footer,
  .no-print {
    display: none !important;
  }
  body {
    background: #ffffff;
    color: #000000;
  }
  .panel,
  .spec-card,
  .check-item {
    border-color: #cbd5e1;
    background: #ffffff;
    color: #000000;
    box-shadow: none;
  }
}