:root {
  --ink: #102418;
  --ink-soft: #1c3a28;
  --field: #dce8c8;
  --field-deep: #b8c99a;
  --harvest: #d4a017;
  --harvest-deep: #a67c0a;
  --soil: #3a2418;
  --paper: #f3f0e6;
  --paper-2: #e7e2d3;
  --line: color-mix(in srgb, var(--ink) 14%, transparent);
  --muted: color-mix(in srgb, var(--ink) 62%, transparent);
  --radius: 2px;
  --font-display: "Bricolage Grotesque", sans-serif;
  --font-body: "Source Serif 4", Georgia, serif;
  --shell: min(1120px, calc(100% - 2.5rem));
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(1200px 500px at 10% -10%, color-mix(in srgb, var(--harvest) 18%, transparent), transparent 60%),
    linear-gradient(180deg, var(--paper) 0%, var(--paper-2) 100%);
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.55;
}

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

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--harvest-deep);
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.9em;
}

.shell {
  width: var(--shell);
  margin-inline: auto;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  z-index: 100;
  padding: 0.5rem 0.75rem;
  background: var(--ink);
  color: var(--paper);
}

.skip-link:focus {
  top: 1rem;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(10px);
  background: color-mix(in srgb, var(--paper) 82%, transparent);
  border-bottom: 1px solid var(--line);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 3.75rem;
}

.wordmark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.site-nav {
  display: flex;
  gap: 1.25rem;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
}

.site-nav a {
  text-decoration: none;
  opacity: 0.8;
}

.site-nav a:hover {
  opacity: 1;
}

/* Page intro */
.page-hero {
  padding: 3.5rem 0 2rem;
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--field) 35%, transparent), transparent 70%);
}

.page-hero--compact {
  padding-top: 2.5rem;
}

.page-hero__title {
  margin: 0.35rem 0 0.65rem;
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.05;
}

.page-hero__lede {
  margin: 0;
  max-width: 42rem;
  color: var(--muted);
}

.eyebrow {
  margin: 0;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--harvest-deep);
}

.crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 1rem;
  font-family: var(--font-display);
  font-size: 0.88rem;
  color: var(--muted);
}

.crumbs a {
  text-decoration: none;
}

/* Catalog */
.catalog {
  padding: 3.5rem 0 5rem;
}

.section-head {
  margin-bottom: 1.75rem;
}

.section-head--tight {
  margin-bottom: 1.1rem;
}

.section-head h2 {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  letter-spacing: -0.03em;
}

.section-head p {
  margin: 0;
  color: var(--muted);
  max-width: 40rem;
}

.catalog-toolbar {
  display: grid;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.catalog-search {
  width: 100%;
  min-height: 3rem;
  padding: 0.7rem 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: color-mix(in srgb, white 70%, var(--paper));
  color: var(--ink);
  font: inherit;
}

.catalog-search:focus {
  outline: 2px solid var(--harvest);
  outline-offset: 1px;
}

.catalog-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.chip {
  min-height: 2.25rem;
  padding: 0.35rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: transparent;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
}

.chip:hover,
.chip.is-active {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}

.alpha-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.2rem 0.45rem;
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 600;
}

.alpha-nav a {
  text-decoration: none;
  opacity: 0.55;
}

.alpha-nav a:hover,
.alpha-nav a.is-available {
  opacity: 1;
}

.alpha-nav a.is-disabled {
  pointer-events: none;
  opacity: 0.25;
}

.catalog-count {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: 0.9rem;
  color: var(--muted);
}

.brand-group {
  margin-bottom: 1.5rem;
}

.brand-group.is-hidden {
  display: none;
}

.brand-group__letter {
  position: sticky;
  top: 3.75rem;
  z-index: 5;
  margin: 0 0 0.35rem;
  padding: 0.45rem 0;
  font-family: var(--font-display);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  background: color-mix(in srgb, var(--paper-2) 92%, transparent);
  border-bottom: 1px solid var(--line);
}

.brand-row {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1.6fr);
  gap: 0.75rem 1.25rem;
  align-items: baseline;
  padding: 0.85rem 0.15rem;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  transition: background 0.2s ease, padding-left 0.2s var(--ease);
}

.brand-row:hover {
  background: color-mix(in srgb, var(--field) 35%, transparent);
  padding-left: 0.45rem;
  color: inherit;
}

.brand-row.is-hidden {
  display: none;
}

.brand-row__name {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-weight: 650;
  font-size: 1.08rem;
  letter-spacing: -0.02em;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.12rem 0.4rem;
  border: 1px solid color-mix(in srgb, var(--harvest-deep) 45%, transparent);
  color: var(--harvest-deep);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.brand-row__meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.5rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.catalog-empty {
  margin: 2rem 0 0;
  color: var(--muted);
}

/* Detail */
.detail-grid {
  padding: 2.5rem 0 4.5rem;
  display: grid;
  gap: 2rem;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  margin: 0;
}

.stat-grid > div {
  padding: 1rem 0;
  border-top: 1px solid var(--line);
}

.stat-grid dt {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.stat-grid dd {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.4vw, 1.7rem);
  font-weight: 650;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.stat-grid .unit {
  font-size: 0.55em;
  font-weight: 600;
  color: var(--muted);
}

.model-table-wrap {
  overflow-x: auto;
  border-top: 1px solid var(--line);
}

.model-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.98rem;
}

.model-table th,
.model-table td {
  padding: 0.8rem 0.65rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
  white-space: nowrap;
}

.model-table thead th {
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.model-table tbody th {
  font-family: var(--font-display);
  font-weight: 650;
}

.model-table tbody tr.is-hidden {
  display: none;
}

.model-table a {
  text-decoration: none;
}

.model-table a:hover {
  text-decoration: underline;
}

.empty-note {
  padding: 1.5rem 0;
  border-top: 1px solid var(--line);
  max-width: 38rem;
}

.empty-note h2 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: 1.4rem;
}

.empty-note p {
  margin: 0;
  color: var(--muted);
}

.back-link {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
}

.back-link a {
  text-decoration: none;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 2rem 0 2.5rem;
  background: color-mix(in srgb, var(--ink) 4%, transparent);
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
}

.site-footer__brand {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
}

.site-footer__meta {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.page-home .catalog {
  padding-top: 1.75rem;
}

@media (max-width: 820px) {
  .brand-row {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }

  .brand-row__meta {
    grid-template-columns: 1fr;
    gap: 0.15rem;
  }

  .stat-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  :root {
    --shell: min(1120px, calc(100% - 1.5rem));
  }

  .stat-grid {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}