:root {
  color-scheme: light;
  --ink: #202124;
  --muted: #5f6368;
  --line: #d8dde3;
  --soft: #f4f6f8;
  --paper: #ffffff;
  --brand: #ba1f2d;
  --brand-dark: #8f1722;
  --accent: #0f766e;
  --shadow: 0 18px 42px rgba(32, 33, 36, 0.14);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: #eef1f5;
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}
a { color: inherit; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px clamp(18px, 4vw, 56px);
  border-bottom: 1px solid rgba(216, 221, 227, 0.8);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(14px);
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}
.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 8px;
  background: var(--ink);
  color: white;
  font-weight: 800;
}
.brand strong, .brand small { display: block; }
.brand small, .eyebrow, .muted, .part-meta, .summary-note { color: var(--muted); }
.top-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 18px;
  color: var(--muted);
  font-size: 0.95rem;
}
.top-nav a, .brand { text-decoration: none; }
.call-link {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 9px 12px;
  font-weight: 700;
  text-decoration: none;
}
.hero, .page-section {
  margin: clamp(22px, 4vw, 54px);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: var(--shadow);
}
.hero {
  padding: clamp(28px, 5vw, 64px);
}
.hero h1 {
  max-width: 1060px;
  margin: 0 0 12px;
  font-size: clamp(2.25rem, 5vw, 4.75rem);
  line-height: 1.05;
}
.hero p {
  max-width: 820px;
  font-size: 1.08rem;
}
.page-section {
  border: 1px solid var(--line);
  padding: clamp(24px, 4vw, 54px);
}
.section-head { max-width: 860px; margin-bottom: 24px; }
.section-head h2 { margin: 0 0 8px; font-size: clamp(1.7rem, 3vw, 2.45rem); }
.eyebrow {
  margin: 0 0 8px;
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.hero-actions, .detail-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}
.primary-action, .secondary-action {
  display: inline-flex;
  justify-content: center;
  border-radius: 8px;
  padding: 13px 16px;
  font-weight: 950;
  text-decoration: none;
}
.primary-action { background: var(--brand); color: #fff; }
.secondary-action { border: 1px solid var(--line); background: #fff; }
.stock-strip, .fact-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 26px;
  max-width: 980px;
}
.stock-strip article, .fact-grid article, .part-card, .note-box {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--soft);
  padding: 14px 16px;
}
.note-box {
  max-width: 920px;
  margin-top: 22px;
}
.note-box h2 {
  margin: 0 0 8px;
}
.note-box p:last-child {
  margin-bottom: 0;
}
.stock-strip span, .fact-grid span, .part-card span.label {
  display: block;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 900;
  text-transform: uppercase;
}
.stock-strip strong, .fact-grid strong { display: block; margin-top: 4px; font-size: 1.25rem; }
.parts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 12px;
}
.part-card {
  display: grid;
  gap: 8px;
}
.part-card a {
  color: var(--ink);
  font-weight: 900;
  text-decoration-color: rgba(186, 31, 45, 0.35);
  text-underline-offset: 3px;
}
.part-code {
  display: inline-flex;
  width: fit-content;
  border: 1px solid rgba(186, 31, 45, 0.2);
  border-radius: 999px;
  background: #fff7f8;
  color: var(--brand-dark);
  padding: 5px 9px;
  font-size: 0.82rem;
  font-weight: 950;
}
.part-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  font-size: 0.9rem;
}
.part-request-link {
  display: inline-flex;
  width: fit-content;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  padding: 8px 11px;
  font-weight: 900;
  text-decoration: none;
}
.detail-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.34fr);
  gap: 18px;
  align-items: start;
}
.detail-title { margin-bottom: 16px; }
.detail-title h1 { margin: 10px 0 8px; font-size: clamp(2rem, 4vw, 3.4rem); line-height: 1.08; }
.price-box {
  border: 1px solid rgba(15, 118, 110, 0.22);
  border-radius: 8px;
  background: #eef7f3;
  padding: 16px;
}
.price-box strong { display: block; font-size: 1.65rem; }
.breadcrumbs {
  margin: 22px clamp(22px, 4vw, 54px) 0;
  color: var(--muted);
  font-size: 0.9rem;
}
.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
}
@media (max-width: 900px) {
  .site-header, .detail-layout { grid-template-columns: 1fr; }
  .site-header { align-items: flex-start; flex-direction: column; }
  .stock-strip, .fact-grid { grid-template-columns: 1fr; }
}