:root {
  --paper: #f6f6f3;
  --white: #fff;
  --ink: #161716;
  --muted: #6e706c;
  --line: #d8d8d2;
  --red: #bd3028;
  --red-on-dark: #e85c54;
  --mono: "Courier New", monospace;
  --sans: Arial, Helvetica, sans-serif;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-geist, var(--sans));
  -webkit-font-smoothing: antialiased;
}
a {
  color: inherit;
  text-decoration: none;
}
button,
a,
select,
summary {
  -webkit-tap-highlight-color: transparent;
}
:focus-visible {
  outline: 2px solid var(--red);
  outline-offset: 4px;
}
.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1000;
  padding: 11px 14px;
  background: var(--ink);
  color: var(--white);
  font: 700 11px/1 var(--font-mono, var(--mono));
  transform: translateY(-160%);
}
.skip-link:focus {
  transform: translateY(0);
}
button,
select {
  font: inherit;
}
.site-header {
  height: 72px;
  padding: 0 max(24px, 4vw);
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  border-bottom: 1px solid var(--line);
  background: rgba(246, 246, 243, 0.96);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 20;
}

@media (min-width: 1241px) {
  .site-header {
    padding-inline: calc((100vw - 1240px) / 2 + max(24px, 4vw));
  }
}

.identity {
  display: flex;
  align-items: center;
  gap: 11px;
  width: max-content;
  min-width: 0;
}
.identity > span {
  width: 32px;
  height: 32px;
  background: var(--ink);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 11px;
  font-weight: 800;
}
.identity b,
.identity small {
  display: block;
}
.identity b {
  font-size: 13px;
  line-height: 1.1;
  letter-spacing: 0.045em;
}
.identity small {
  font: 9px/1.25 var(--font-mono, var(--mono));
  text-transform: uppercase;
  color: var(--muted);
  letter-spacing: 0.12em;
  margin-top: 4px;
}
.site-nav {
  display: flex;
  align-items: center;
  gap: 21px;
  font: 600 11px var(--font-mono, var(--mono));
  text-transform: uppercase;
}
.site-nav a {
  padding: 8px 0;
  position: relative;
  transition: color 0.25s ease;
}
.site-nav a::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 2px;
  left: 0;
  height: 1px;
  background: var(--red);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.25s ease;
}
.site-nav a:hover,
.site-nav a.active {
  color: var(--red);
}
.site-nav a:hover::after,
.site-nav a.active::after {
  transform: scaleX(1);
  transform-origin: left;
}
.menu-button {
  display: none;
  background: none;
  border: 0;
  color: var(--ink);
  cursor: pointer;
  text-transform: uppercase;
  font: 700 11px var(--font-mono, var(--mono));
  transition: color 0.2s ease;
}
.menu-button:hover,
.menu-button:focus-visible,
.menu-button:active,
.menu-button[aria-expanded="true"] {
  color: var(--red);
}
.home-intro {
  min-height: 490px;
  padding: 80px max(24px, 8vw);
  display: grid;
  grid-template-columns: 0.35fr 1fr;
  gap: 6vw;
  align-items: center;
  border-bottom: 1px solid var(--line);
}
.home-label {
  align-self: start;
  padding-top: 9px;
  display: flex;
  flex-direction: column;
  gap: 9px;
  font: 10px var(--font-mono, var(--mono));
  text-transform: uppercase;
  color: var(--muted);
}
.home-label span:first-child {
  color: var(--red);
}
.home-intro > div:last-child {
  max-width: 780px;
}
.jp {
  font-size: 13px;
  letter-spacing: 0.14em;
  margin: 0 0 22px;
  color: var(--muted);
}
.home-intro h1 {
  font-size: clamp(44px, 5.5vw, 76px);
  letter-spacing: -0.055em;
  line-height: 1;
  margin: 0 0 26px;
  font-weight: 650;
}
.home-intro > div:last-child > p:last-child {
  max-width: 620px;
  font-size: 17px;
  line-height: 1.7;
  color: #545651;
}
.principles {
  min-height: 58px;
  padding: 0 max(24px, 8vw);
  display: flex;
  align-items: center;
  gap: 40px;
  border-bottom: 1px solid var(--line);
  font: 11px var(--font-mono, var(--mono));
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.principles span:before {
  content: "";
  display: inline-block;
  width: 5px;
  height: 5px;
  background: var(--red);
  margin-right: 10px;
}
.home-directory {
  padding: 90px max(24px, 8vw);
}
.home-directory > header {
  display: flex;
  justify-content: space-between;
  align-items: end;
  margin-bottom: 30px;
}
.home-directory > header small {
  font: 10px var(--font-mono, var(--mono));
  text-transform: uppercase;
  color: var(--red);
}
.home-directory > header p {
  font-size: 13px;
  color: var(--muted);
  margin: 0;
}
.home-directory > div {
  border-top: 1px solid var(--line);
}
.home-directory a {
  min-height: 112px;
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: 50px 1fr 80px 28px;
  gap: 20px;
  align-items: center;
  transition: 0.2s;
}
.home-directory a:hover,
.home-directory a:focus-visible {
  background: var(--white);
  padding: 0 18px;
}
.home-directory a > span,
.home-directory a > small {
  font: 10px var(--font-mono, var(--mono));
  color: var(--muted);
}
.home-directory h2 {
  font-size: 25px;
  margin: 0 0 5px;
  font-weight: 600;
}
.home-directory p {
  font-size: 12px;
  color: var(--muted);
  margin: 0;
}
.home-directory b {
  font-size: 16px;
}
.home-note {
  margin: 0 max(24px, 8vw) 100px;
  padding: 50px;
  background: var(--ink);
  color: #f2f2ef;
  display: grid;
  grid-template-columns: 0.3fr 1fr auto;
  gap: 40px;
  align-items: start;
}
.home-note small {
  font: 11px var(--font-mono, var(--mono));
  color: #92938f;
  text-transform: uppercase;
}
.home-note blockquote {
  font-size: clamp(22px, 3vw, 38px);
  line-height: 1.3;
  letter-spacing: -0.03em;
  margin: 0;
  max-width: 800px;
}
.home-note a {
  font: 11px var(--font-mono, var(--mono));
  color: #ddd;
  border-bottom: 1px solid #777;
  padding-bottom: 6px;
}
.page {
  max-width: 1240px;
  margin: auto;
  padding: 0 max(24px, 4vw) 110px;
}
.page-head {
  padding: 85px 0 70px;
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: 0.32fr 1fr 0.65fr;
  gap: 5vw;
  align-items: end;
}
.page-meta {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font: 10px var(--font-mono, var(--mono));
  text-transform: uppercase;
  color: var(--muted);
}
.page-meta span:first-child {
  color: var(--red);
}
.page-head h1 {
  font-size: clamp(42px, 5vw, 64px);
  letter-spacing: -0.055em;
  line-height: 1;
  margin: 0;
  font-weight: 650;
}
.page-head > p {
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
  margin: 0;
}
.model-table {
  margin-top: 55px;
  border-top: 1px solid var(--line);
}
.table-head {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 100px;
  padding: 13px 0 13px 60px;
  border-bottom: 1px solid var(--line);
  font: 11px var(--font-mono, var(--mono));
  text-transform: uppercase;
  color: var(--muted);
}
.model-table article {
  min-height: 100px;
  display: grid;
  grid-template-columns: 45px 1.3fr 1fr 1fr 100px;
  gap: 15px;
  align-items: center;
  border-bottom: 1px solid var(--line);
}
.row-index {
  font: 10px var(--font-mono, var(--mono));
  color: var(--red);
}
.model-table h2 {
  font-size: 23px;
  margin: 0 0 5px;
  font-weight: 600;
}
.model-table article small {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0 8px;
}
.model-table article small .model-jp {
  font-family: sans-serif;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.04em;
}
.model-table article small .model-jp::after {
  content: "/";
  margin-left: 8px;
  color: var(--line);
}
.model-table article small {
  font: 10px/1.45 var(--font-mono, var(--mono));
  color: var(--muted);
}
.model-table article p {
  font: 11px/1.55 var(--font-mono, var(--mono));
  color: var(--muted);
}
.badge {
  width: max-content;
  padding: 6px 8px;
  background: #e6e6e1;
  font: 11px var(--font-mono, var(--mono));
  text-transform: uppercase;
}
.badge.available {
  color: #325b3b;
  background: #e0e9e0;
}
.badge.verify {
  color: #7b4d00;
  background: #f3e5c8;
}

.badge.mixed {
  color: #684800;
  background: #f1dfad;
}
.info-note {
  margin-top: 45px;
  padding: 24px;
  border-left: 2px solid var(--red);
  background: #edede8;
  display: grid;
  grid-template-columns: 180px 1fr;
}
.info-note b {
  font: 11px var(--font-mono, var(--mono));
  text-transform: uppercase;
}
.info-note p {
  font-size: 12px;
  color: #5f615d;
  line-height: 1.6;
  margin: 0;
}
.filter-panel {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  gap: 12px;
  margin: 45px 0 15px;
}

@media (min-width: 761px) {
  .filter-panel {
    position: sticky;
    top: 84px;
    z-index: 8;
    padding: 12px;
    border: 1px solid var(--line);
    background: rgb(246 246 243 / 96%);
    backdrop-filter: blur(12px);
  }
}

.model-table article[hidden] { display: none; }
.filter-panel label {
  display: grid;
  gap: 7px;
  font: 11px var(--font-mono, var(--mono));
  text-transform: uppercase;
  color: var(--muted);
}
.filter-panel select,
.filter-panel input {
  min-width: 190px;
  padding: 11px 12px;
  background: var(--white);
  border: 1px solid var(--line);
  color: var(--ink);
  font: 11px var(--font-sans, Arial, sans-serif);
}
.filter-panel input:focus,
.filter-panel select:focus {
  outline: 2px solid var(--red);
  outline-offset: 2px;
}
.part-search-field input {
  min-width: min(310px, 75vw);
}
.filter-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}
.filter-actions span {
  margin-right: 4px;
  font: 11px var(--font-mono, var(--mono));
  text-transform: uppercase;
  color: var(--muted);
}
.filter-actions button,
.copy-part-number {
  min-height: 34px;
  padding: 0 11px;
  border: 1px solid var(--line);
  background: var(--white);
  color: var(--ink);
  cursor: pointer;
  font: 11px var(--font-mono, var(--mono));
  text-transform: uppercase;
  transition: border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}
.filter-actions button:hover,
.filter-actions button:focus-visible,
.copy-part-number:hover,
.copy-part-number:focus-visible {
  border-color: var(--red);
  color: var(--red);
  transform: translateY(-1px);
}
.parts-list {
  border-top: 1px solid var(--line);
}
.parts-list article {
  min-height: 158px;
  display: grid;
  grid-template-columns: 85px 1.1fr 0.8fr 1.2fr;
  gap: 25px;
  align-items: center;
  border-bottom: 1px solid var(--line);
  padding: 22px 0;
}
.part-code span {
  width: max-content;
  min-width: 36px;
  height: 36px;
  padding: 0 6px;
  box-sizing: border-box;
  border: 1px solid var(--ink);
  display: grid;
  place-items: center;
  font: 10px var(--font-mono, var(--mono));
  margin-bottom: 8px;
}
.part-code small,
.part-main > small,
.part-ref small {
  font: 11px var(--font-mono, var(--mono));
  color: var(--muted);
  text-transform: uppercase;
}
.part-main h2 {
  font-size: 20px;
  margin: 8px 0 3px;
}
.part-main p {
  font-size: 11px;
  color: var(--muted);
  margin: 0;
}
.part-ref code {
  display: block;
  font: 12px var(--font-mono, var(--mono));
}
.part-ref-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 9px;
}
.copy-part-number {
  min-height: 28px;
  padding: 0 8px;
}
.part-detail p {
  font-size: 12px;
  line-height: 1.55;
  margin: 0 0 9px;
}
.part-detail small {
  font-size: 10px;
  line-height: 1.5;
  color: var(--muted);
}
.legal-line {
  font: 11px/1.65 var(--font-mono, var(--mono));
  color: var(--muted);
  margin-top: 22px;
}
.recommendation-section {
  margin-top: 70px;
  padding-top: 30px;
  border-top: 1px solid var(--ink);
}
.parts-jump {
  margin-top: 55px;
  padding: 14px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.parts-jump a {
  min-height: 24px;
  display: inline-flex;
  align-items: center;
  color: var(--muted);
  font: 11px var(--font-mono, var(--mono));
  text-transform: uppercase;
  text-decoration: underline;
  text-decoration-color: transparent;
  text-underline-offset: 5px;
  transition: color 0.2s ease, text-decoration-color 0.2s ease;
}
.parts-jump a:hover,
.parts-jump a:focus-visible {
  color: var(--ink);
  text-decoration-color: var(--red);
}
.technical-disclosure {
  scroll-margin-top: 95px;
}
.technical-disclosure > summary {
  cursor: pointer;
  list-style: none;
  margin-bottom: 0;
}
.technical-disclosure > summary::-webkit-details-marker {
  display: none;
}
.technical-disclosure .disclosure-label {
  grid-column: 1 / -1;
  justify-self: end;
  color: var(--ink);
  font: 11px var(--font-mono, var(--mono));
  text-transform: uppercase;
}
.technical-disclosure .disclosure-label::after {
  content: "+";
  width: 21px;
  height: 21px;
  margin-left: 9px;
  display: inline-grid;
  place-items: center;
  border: 1px solid var(--ink);
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease;
}
.technical-disclosure > summary:hover .disclosure-label::after,
.technical-disclosure > summary:focus-visible .disclosure-label::after {
  border-color: var(--red);
  background: var(--red);
  color: var(--white);
}
.technical-disclosure[open] .disclosure-label::after {
  transform: rotate(45deg);
  background: var(--ink);
  color: var(--white);
}
.technical-disclosure[open] > summary {
  margin-bottom: 28px;
}
.technical-disclosure[open] > :not(summary) {
  animation: disclosure-in 0.28s ease both;
}
@keyframes disclosure-in {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.recommendation-section.compact-top {
  margin-top: 30px;
}
.section-head {
  display: grid;
  grid-template-columns: 0.35fr 1fr 0.8fr;
  gap: 35px;
  align-items: start;
  margin-bottom: 28px;
}
.section-head small,
.card-label {
  font: 11px/1.5 var(--font-mono, var(--mono));
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--red);
}
.section-head h2 {
  margin: 0;
  font-size: clamp(25px, 3vw, 38px);
  letter-spacing: -0.035em;
}
.section-head p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.7;
}
.recommendation-grid,
.build-grid,
.support-columns {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.recommendation-grid.three-columns {
  grid-template-columns: repeat(3, 1fr);
}
.recommendation-grid.two-columns,
.build-grid,
.support-columns {
  grid-template-columns: repeat(2, 1fr);
}
.recommendation-card,
.build-card,
.support-list {
  padding: 26px;
  background: var(--white);
}
.recommendation-card.accent {
  border-top: 2px solid var(--red);
}
.recommendation-card h3,
.build-card h3,
.support-list h3,
.compatibility-list h3 {
  margin: 9px 0;
  font-size: 18px;
}
.recommendation-card p,
.build-card > p,
.compatibility-list p {
  margin: 0;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.65;
}
.spec-table {
  border-top: 1px solid var(--line);
}
.spec-table > div {
  display: grid;
  grid-template-columns: 0.7fr 0.8fr 1.5fr;
  gap: 24px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
  align-items: start;
}
.spec-table span,
.spec-table strong {
  font: 11px/1.5 var(--font-mono, var(--mono));
  text-transform: uppercase;
}
.spec-table strong {
  color: var(--red);
}
.spec-table p {
  margin: 0;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.6;
}
.source-note {
  margin: 18px 0 0;
  font: 11px/1.7 var(--font-mono, var(--mono));
  color: var(--muted);
}
.source-note a {
  color: var(--red);
  border-bottom: 1px solid var(--red);
}
.build-title {
  display: flex;
  gap: 15px;
  align-items: flex-start;
}
.build-title > span {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 1px solid var(--ink);
  flex: 0 0 auto;
  font: 11px var(--font-mono, var(--mono));
}
.build-title small {
  font: 11px var(--font-mono, var(--mono));
  text-transform: uppercase;
  color: var(--red);
}
.build-title h3 {
  margin-top: 6px;
}
.part-specs {
  margin: 25px 0;
  border-top: 1px solid var(--line);
}
.part-specs > div {
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}
.part-specs dt {
  font-size: 10px;
  color: var(--muted);
  margin-bottom: 5px;
}
.part-specs dd {
  margin: 0;
  font: 11px var(--font-mono, var(--mono));
  overflow-wrap: anywhere;
}
.compatibility-list {
  border-top: 1px solid var(--line);
}
.compatibility-list article {
  display: grid;
  grid-template-columns: 115px 0.7fr 1.4fr;
  gap: 25px;
  align-items: center;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}
.compatibility {
  width: max-content;
  padding: 6px 8px;
  font: 11px var(--font-mono, var(--mono));
  text-transform: uppercase;
}
.compatibility.yes {
  color: #325b3b;
  background: #e0e9e0;
}
.compatibility.no {
  color: #8a2924;
  background: #f0dfdc;
}
.support-list h3 {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-top: 0;
}
.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #477451;
}
.unsupported .status-dot {
  background: var(--red);
}
.support-list ul {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}
.support-list li {
  padding: 10px 0;
  border-top: 1px solid var(--line);
  font-size: 11px;
  line-height: 1.55;
}
.ecu-note {
  margin-top: 28px;
  padding: 18px;
  background: var(--paper);
  border-left: 2px solid var(--red);
}
.ecu-note small {
  font: 11px/1.5 var(--font-mono, var(--mono));
  text-transform: uppercase;
  color: var(--muted);
}
.ecu-note p {
  margin: 9px 0 0;
  font-size: 11px;
  line-height: 1.65;
}
.baseline {
  margin: 50px 0;
  background: var(--ink);
  color: #eee;
  padding: 40px;
  display: grid;
  grid-template-columns: 0.3fr 1fr 1fr;
  gap: 40px;
  align-items: start;
}
.baseline small {
  font: 11px var(--font-mono, var(--mono));
  color: #aaa;
  text-transform: uppercase;
}
.baseline h2 {
  font-size: 25px;
  line-height: 1.3;
  margin: 0;
}
.baseline p {
  font-size: 12px;
  line-height: 1.7;
  color: #aaa;
  margin: 0;
}
.maintenance-list {
  border-top: 1px solid var(--line);
}
.maintenance-list article {
  display: grid;
  grid-template-columns: 70px 1fr;
  border-bottom: 1px solid var(--line);
  padding: 28px 0;
}
.maintenance-list article > span {
  font: 11px var(--font-mono, var(--mono));
  color: var(--red);
}
.maintenance-list small {
  font: 11px var(--font-mono, var(--mono));
  text-transform: uppercase;
  color: var(--muted);
}
.maintenance-list h2 {
  font-size: 21px;
  margin: 7px 0;
}
.maintenance-list p {
  font-size: 12px;
  line-height: 1.65;
  color: var(--muted);
  max-width: 760px;
  margin: 0;
}
.warning {
  margin: 45px 0 25px;
  padding: 22px;
  border: 1px solid #cfb8b4;
  border-left: 2px solid var(--red);
  display: grid;
  grid-template-columns: 180px 1fr;
}
.warning b {
  font: 11px var(--font-mono, var(--mono));
  text-transform: uppercase;
  color: var(--red);
}
.warning p {
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted);
  margin: 0;
}
.download-panel {
  margin: 35px 0 55px;
  padding: 34px;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 55px;
  align-items: center;
  background: var(--ink);
  color: var(--white);
}
.download-copy small,
.download-action small {
  font: 11px/1.6 var(--font-mono, var(--mono));
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.download-copy small {
  color: #9a9c97;
}
.download-copy h2 {
  margin: 10px 0 12px;
  font-size: clamp(26px, 3vw, 38px);
  letter-spacing: -0.04em;
}
.download-copy p {
  max-width: 650px;
  margin: 0;
  color: #a8aaa5;
  font-size: 12px;
  line-height: 1.7;
}
.download-action {
  display: grid;
  gap: 14px;
}
.download-action > a {
  min-height: 52px;
  padding: 0 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  background: var(--red);
  color: var(--white);
  font: 700 11px var(--font-mono, var(--mono));
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition:
    background 0.2s ease,
    transform 0.2s ease;
}
.download-action > a:hover,
.download-action > a:focus-visible {
  background: #d13a31;
  transform: translateY(-2px);
}
.download-action > a span {
  font-size: 15px;
}
.download-action small {
  color: #b9bbb6;
}
.steps {
  border-top: 1px solid var(--line);
}
.steps article {
  min-height: 112px;
  display: grid;
  grid-template-columns: 70px 1fr;
  border-bottom: 1px solid var(--line);
  padding: 25px 0;
}
.steps article > span {
  font: 11px var(--font-mono, var(--mono));
  color: var(--red);
}
.steps h2 {
  font-size: 20px;
  margin: 0 0 8px;
}
.steps p {
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted);
  margin: 0;
  max-width: 760px;
}
.log-guide {
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: #eaeae5;
  margin-top: 35px;
}
.log-guide > div {
  padding: 25px;
}
.log-guide > div + div {
  border-left: 1px solid var(--line);
}
.log-guide small {
  font: 11px var(--font-mono, var(--mono));
  text-transform: uppercase;
  color: var(--muted);
}
.log-guide p,
.log-guide code {
  display: block;
  font: 11px/1.6 var(--font-mono, var(--mono));
  margin: 10px 0 0;
}
.faq-page {
  max-width: 1000px;
}
.faq-list {
  margin-top: 45px;
  border-top: 1px solid var(--line);
}
details {
  border-bottom: 1px solid var(--line);
}
summary {
  list-style: none;
  display: grid;
  grid-template-columns: 50px 1fr 20px;
  align-items: center;
  padding: 24px 0;
  cursor: pointer;
}
summary::-webkit-details-marker {
  display: none;
}
summary span {
  font: 11px var(--font-mono, var(--mono));
  color: var(--red);
}
summary b {
  font-size: 15px;
  transition: color 0.2s ease;
}
summary i {
  font-style: normal;
  font-size: 17px;
  transition: 0.2s;
}
summary:hover b,
summary:focus-visible b {
  color: var(--red);
}
details[open] summary i {
  transform: rotate(45deg);
}
details > p {
  margin: 0 30px 25px 50px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted);
  max-width: 700px;
}
.faq-answer {
  margin: 0 30px 25px 50px;
  max-width: 760px;
  color: var(--muted);
}
.faq-answer p,
.faq-answer li {
  font-size: 12px;
  line-height: 1.7;
}
.faq-answer p {
  margin: 0;
}
.faq-answer p + p,
.faq-answer ul + p {
  margin-top: 12px;
}
.faq-answer ul {
  margin: 0;
  padding-left: 18px;
}
.faq-answer a {
  color: var(--ink);
  text-decoration-color: var(--red);
  text-underline-offset: 3px;
}
.faq-answer a:hover,
.faq-answer a:focus-visible {
  color: var(--red);
}
.site-footer {
  padding: 55px max(24px, 4vw) 25px;
  background: var(--ink);
  color: #eee;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 35px;
}
.site-footer b {
  font-size: 12px;
}
.site-footer p {
  font-size: 10px;
  line-height: 1.6;
  color: #888;
}
.site-footer > div:nth-child(2),
.site-footer .footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  font: 11px var(--font-mono, var(--mono));
  text-transform: uppercase;
}
.site-footer > small {
  grid-column: 1/-1;
  border-top: 1px solid #333;
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  font: 12px/1.5 var(--font-mono, var(--mono));
  color: #aaa;
}

.site-footer a {
  transition: color 0.2s ease;
}

.site-footer a:hover {
  color: var(--red-on-dark);
}
.editorial-signature {
  max-width: 1180px;
  margin: 20px auto 75px;
  padding: 22px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--line);
}
.editorial-signature p,
.editorial-signature small {
  margin: 0;
}
.editorial-signature strong {
  display: block;
  margin-bottom: 5px;
  font-size: 13px;
}
.editorial-signature p {
  color: var(--muted);
  font-size: 11px;
  line-height: 1.55;
}
.editorial-signature small {
  color: var(--muted);
  font: 11px var(--font-mono, var(--mono));
  text-transform: uppercase;
  white-space: nowrap;
}
.legal-page {
  max-width: 920px;
  margin: 45px auto 0;
  border-top: 1px solid var(--line);
}
.legal-page section {
  padding: 30px 0;
  border-bottom: 1px solid var(--line);
}
.legal-page section > small,
.legal-updated {
  font: 11px/1.6 var(--font-mono, var(--mono));
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--red);
}
.legal-page h2 {
  margin: 10px 0 12px;
  font-size: clamp(22px, 3vw, 31px);
  letter-spacing: -0.03em;
}
.legal-page section > p {
  max-width: 820px;
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.75;
}
.legal-updated {
  margin: 24px 0 0;
  color: var(--muted);
}
.about-intro {
  margin-top: 45px;
  padding: 38px 0;
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: 70px;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--line);
}
.about-intro small,
.about-principles > small,
.about-contact small {
  font: 11px/1.6 var(--font-mono, var(--mono));
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--red);
}
.about-intro h2 {
  margin: 12px 0 0;
  font-size: clamp(28px, 4vw, 46px);
  line-height: 1.05;
  letter-spacing: -0.045em;
}
.about-intro p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.75;
}
.about-intro p + p {
  margin-top: 17px;
}
.about-method,
.about-boundaries {
  margin-top: 75px;
}
.about-method-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.about-method-grid article {
  min-height: 220px;
  padding: 26px;
  background: var(--white);
}
.about-method-grid span {
  font: 11px var(--font-mono, var(--mono));
  color: var(--red);
}
.about-method-grid h3 {
  margin: 54px 0 10px;
  font-size: 21px;
}
.about-method-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.65;
}
.about-principles {
  margin-top: 75px;
  padding: 38px;
  display: grid;
  grid-template-columns: 0.45fr 1fr 1fr;
  gap: 42px;
  background: var(--ink);
  color: var(--white);
}
.about-principles h2 {
  margin: 0 0 12px;
  font-size: 22px;
  line-height: 1.2;
}
.about-principles p {
  margin: 0;
  color: #a6a8a3;
  font-size: 12px;
  line-height: 1.7;
}
.about-contact {
  margin-top: 75px;
  padding: 34px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 45px;
  align-items: center;
  border: 1px solid var(--line);
  background: var(--white);
}
.about-contact h2 {
  margin: 10px 0;
  font-size: clamp(25px, 3vw, 37px);
  letter-spacing: -0.035em;
}
.about-contact p {
  max-width: 660px;
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.7;
}
.about-contact .content-actions {
  margin: 0;
}
@media (max-width: 1024px) {
  body.menu-open {
    overflow: hidden;
  }

  .menu-button {
    display: block;
  }
  .site-nav {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 71px;
    background: var(--paper);
    padding: 22px max(24px, 4vw);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: flex-start;
    max-height: calc(100dvh - 71px);
    overflow-y: auto;
    overscroll-behavior: contain;
  }
  .site-nav.open {
    display: flex;
  }
  .home-intro,
  .page-head {
    grid-template-columns: 1fr;
  }
  .home-intro {
    gap: 35px;
  }
  .home-label {
    flex-direction: row;
  }
  .page-head {
    gap: 25px;
  }
  .home-note {
    grid-template-columns: 1fr;
  }
  .table-head {
    display: none;
  }
  .model-table article {
    grid-template-columns: 40px 1fr 100px;
  }
  .model-table article > p {
    grid-column: 2;
  }
  .parts-list article {
    grid-template-columns: 65px 1fr 1fr;
  }
  .part-detail {
    grid-column: 2/4;
  }
  .baseline {
    grid-template-columns: 1fr;
  }
  .site-footer {
    grid-template-columns: 1fr;
  }
  .site-footer > small {
    grid-column: 1;
  }
  .site-footer > div:nth-child(2),
  .site-footer .footer-nav {
    flex-wrap: wrap;
  }
  .section-head {
    grid-template-columns: 1fr 1.5fr;
  }
  .section-head p {
    grid-column: 2;
  }
  .recommendation-grid.three-columns {
    grid-template-columns: 1fr;
  }
  .about-method-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .about-principles,
  .about-contact {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 560px) {
  .site-header {
    height: 64px;
  }
  .site-nav {
    top: 63px;
    max-height: calc(100dvh - 63px);
  }
  .home-intro {
    min-height: 430px;
    padding-top: 60px;
    padding-bottom: 60px;
  }
  .home-intro h1 {
    font-size: 43px;
  }
  .principles {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
    padding-top: 20px;
    padding-bottom: 20px;
  }
  .home-directory {
    padding-top: 65px;
    padding-bottom: 65px;
  }
  .home-directory > header {
    display: block;
  }
  .home-directory > header p {
    margin-top: 10px;
  }
  .home-directory a {
    grid-template-columns: 30px 1fr 20px;
    padding: 20px 0;
  }
  .home-directory a > small {
    display: none;
  }
  .home-directory a > p {
    font-size: 11px;
  }
  .home-note {
    padding: 30px;
    margin-bottom: 70px;
  }
  .page {
    padding-bottom: 75px;
  }
  .page-head {
    padding: 60px 0 50px;
  }
  .page-head h1 {
    font-size: 43px;
  }
  .about-intro,
  .about-method-grid {
    grid-template-columns: 1fr;
  }
  .about-intro {
    gap: 28px;
  }
  .about-principles,
  .about-contact {
    padding: 26px;
  }
  .model-table article {
    grid-template-columns: 30px 1fr;
  }
  .model-table article > .badge {
    grid-column: 2;
  }
  .parts-list article {
    grid-template-columns: 45px 1fr;
  }
  .part-ref,
  .part-detail {
    grid-column: 2;
  }
  .filter-panel {
    align-items: stretch;
    flex-direction: column;
  }
  .filter-panel select,
  .filter-panel input {
    width: 100%;
  }
  .filter-actions {
    margin-left: 0;
  }
  .info-note,
  .warning,
  .download-panel {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .download-panel {
    padding: 28px;
  }
  .baseline {
    padding: 28px;
  }
  .log-guide {
    grid-template-columns: 1fr;
  }
  .log-guide > div + div {
    border-left: 0;
    border-top: 1px solid var(--line);
  }
  .site-footer > div:nth-child(2),
  .site-footer .footer-nav {
    gap: 14px;
  }
  .site-footer > small {
    flex-direction: column;
    gap: 8px;
  }
  .section-head,
  .build-grid,
  .support-columns {
    grid-template-columns: 1fr;
  }
  .section-head p {
    grid-column: 1;
  }
  .spec-table > div,
  .compatibility-list article {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  .editorial-signature {
    margin-bottom: 55px;
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  .technical-disclosure[open] > :not(summary) {
    animation: none;
  }
}

@media print {
  @page {
    margin: 16mm;
  }

  body.printing-parts-list {
    background: #fff;
    color: #000;
  }

  body.printing-parts-list .site-header,
  body.printing-parts-list .site-footer,
  body.printing-parts-list .back-to-top,
  body.printing-parts-list .page > :not(#partShortlist),
  body.printing-parts-list #partShortlist .shortlist-actions {
    display: none !important;
  }

  body.printing-parts-list .page {
    display: block;
    width: auto;
    max-width: none;
    margin: 0;
    padding: 0;
  }

  body.printing-parts-list #partShortlist {
    display: block !important;
    margin: 0;
    padding: 0;
    border: 0;
    background: #fff;
    color: #000;
  }

  body.printing-parts-list #partShortlist li {
    break-inside: avoid;
  }
}
.site-logo {
  width: 30px;
  height: 30px;
  object-fit: contain;
  display: block;
}

/* Above-the-fold content must paint immediately for a fast first view. */
.reveal-immediate {
  opacity: 1;
  transform: none;
}

/* Shared, progressive reveal animation. Content remains visible without JS. */
.reveal {
  opacity: 1;
  transform: none;
}

html.reveal-ready .reveal {
  opacity: 0;
  transform: translateY(16px);
  transition:
    opacity 0.55s ease,
    transform 0.55s ease;
}

html.reveal-ready .reveal.visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html.reveal-ready .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* Content hubs, model guides and compatibility checker. */
.content-page {
  max-width: 1240px;
}

.model-page .page-head {
  padding: 58px 0 42px;
  column-gap: clamp(32px, 4vw, 58px);
  row-gap: 24px;
}

.model-page .page-head .models-actions {
  grid-template-columns: repeat(3, max-content);
  margin: 12px 0 0;
}

.model-hero-media {
  position: relative;
  margin: 28px 0 0;
  overflow: hidden;
  background: var(--paper);
}

.model-page .model-hero-media {
  margin-top: 18px;
}

.model-hero-media::after {
  content: "";
  position: absolute;
  z-index: 1;
  inset: 0 0 39px;
  pointer-events: none;
  background:
    linear-gradient(to bottom,
      var(--paper) 0,
      rgba(246, 246, 243, 0.38) 1.5%,
      transparent 6%,
      transparent 54%,
      rgba(246, 246, 243, 0.08) 62%,
      rgba(246, 246, 243, 0.3) 72%,
      rgba(246, 246, 243, 0.68) 84%,
      var(--paper) 100%),
    linear-gradient(to right,
      var(--paper) 0,
      rgba(246, 246, 243, 0.62) 1.5%,
      transparent 6%,
      transparent 94%,
      rgba(246, 246, 243, 0.62) 98.5%,
      var(--paper) 100%);
}

.model-hero-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 1;
  object-fit: cover;
  object-position: center;
}

.model-hero-media-mazda6 img {
  transform: scale(1.28);
  transform-origin: 50% 100%;
}

.model-hero-media figcaption {
  position: relative;
  z-index: 2;
  padding: 11px 0 13px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font: 700 10px/1.5 var(--font-mono, var(--mono));
  letter-spacing: .06em;
  text-transform: uppercase;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 9px;
  padding: 24px 0 0;
  color: var(--muted);
  font: 700 11px/1.5 var(--font-mono, var(--mono));
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.breadcrumb a:hover {
  color: var(--red);
}

/* Full-width marketing pages keep their breadcrumb on the shared content grid. */
.tune-main > .breadcrumb,
.contact-main > .breadcrumb,
.stories-main > .breadcrumb {
  max-width: 1240px;
  margin: 0 auto;
  padding: 24px max(24px, 4vw) 0;
}

.guide-summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  background: var(--ink);
  color: var(--white);
  margin-bottom: 54px;
}

.guide-summary > div {
  min-height: 128px;
  padding: 28px;
  border-right: 1px solid #343633;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 24px;
}

.guide-summary > div:last-child {
  border-right: 0;
}

.guide-summary small,
.engine-list span,
.review-note,
.checker-result > small {
  font: 700 11px/1.5 var(--font-mono, var(--mono));
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.guide-summary small {
  color: var(--red-on-dark);
}

.guide-summary strong {
  font-size: 17px;
  line-height: 1.35;
}

.content-section {
  margin: 54px 0;
}

.content-section .section-head {
  max-width: 760px;
  margin-bottom: 28px;
}

.engine-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 24px 0;
}

.engine-list span {
  padding: 10px 12px;
  border: 1px solid var(--line);
  background: var(--white);
}

.content-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 28px 0 20px;
}

.page-head .content-actions {
  grid-column: 1 / -1;
  flex-wrap: nowrap;
}

.page-head .models-actions {
  display: grid;
  grid-template-columns: max-content max-content;
  width: max-content;
  align-items: stretch;
}

.back-to-top {
  position: fixed;
  right: clamp(16px, 2.25vw, 34px);
  bottom: clamp(16px, 2.25vw, 34px);
  z-index: 90;
  display: grid;
  width: 46px;
  height: 46px;
  padding: 0;
  place-items: center;
  border: 1px solid var(--ink);
  border-radius: 50%;
  background: var(--ink);
  color: var(--paper);
  font: 600 20px/1 var(--sans);
  box-shadow: 0 8px 22px rgb(0 0 0 / 14%);
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition:
    opacity 180ms ease,
    transform 180ms ease,
    background-color 180ms ease,
    border-color 180ms ease;
}

.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.back-to-top span {
  position: relative;
  display: block;
  width: 14px;
  height: 16px;
}

.back-to-top span::before {
  content: "";
  position: absolute;
  top: 2px;
  left: 50%;
  width: 1px;
  height: 12px;
  background: currentColor;
  transform: translateX(-50%);
}

.back-to-top span::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 50%;
  width: 7px;
  height: 7px;
  border-top: 1px solid currentColor;
  border-left: 1px solid currentColor;
  transform: translateX(-50%) rotate(45deg);
  transform-origin: center;
}

.back-to-top:hover,
.back-to-top:focus-visible {
  border-color: var(--red);
  background: var(--red);
}

.back-to-top:focus-visible {
  outline: 2px solid var(--paper);
  outline-offset: -4px;
}

@media (prefers-reduced-motion: reduce) {
  .back-to-top {
    transition: none;
  }
}

.action-button {
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid var(--ink);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font: 700 10px var(--font-mono, var(--mono));
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.action-button:hover,
.action-button:focus-visible {
  transform: translateY(-2px);
  border-color: var(--red);
  color: var(--red);
}

.action-button.primary {
  background: var(--ink);
  color: var(--white);
}

.action-button.primary:hover,
.action-button.primary:focus-visible {
  background: var(--red);
  color: var(--white);
}

.action-button:active {
  transform: translateY(0);
}

@media (max-width: 520px) {
  .page-head .content-actions {
    flex-wrap: wrap;
  }

  .page-head .models-actions {
    grid-template-columns: 1fr;
    width: min(100%, 260px);
  }

  .model-page .page-head .models-actions {
    grid-template-columns: 1fr;
  }
}

.review-note {
  color: var(--muted);
  max-width: 820px;
}

.model-plan {
  padding: clamp(28px, 4vw, 52px);
  border: 1px solid var(--line);
  background: var(--white);
}

.model-checklist {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.model-checklist li {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.model-checklist span,
.model-next small,
.model-next nav span {
  color: var(--red);
  font: 700 11px/1.6 var(--font-mono, var(--mono));
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.model-checklist p {
  max-width: 760px;
  margin: 0;
  color: var(--ink);
}

.model-priorities {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border: 1px solid var(--line);
  background: var(--white);
}

.model-priorities article {
  min-height: 190px;
  padding: clamp(24px, 3vw, 38px);
}

.model-priorities article + article {
  border-left: 1px solid var(--line);
}

.model-priorities h3 {
  margin: 0 0 14px;
  font-size: clamp(20px, 2vw, 27px);
}

.model-priorities p {
  max-width: 460px;
  margin: 0;
  color: var(--muted);
}

.model-next {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(300px, 0.85fr);
  gap: clamp(30px, 6vw, 80px);
  margin: 64px 0 24px;
  padding: clamp(32px, 5vw, 60px);
  background: var(--ink);
  color: var(--white);
}

.model-next h2 {
  max-width: 620px;
  margin: 12px 0 18px;
  font-size: clamp(28px, 3.4vw, 46px);
}

.model-next p {
  max-width: 630px;
  margin: 0;
  color: #b9bbb6;
}

.model-next nav {
  border-top: 1px solid #343633;
}

.model-next nav a {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 12px;
  align-items: center;
  min-height: 62px;
  border-bottom: 1px solid #343633;
  font: 700 11px/1.4 var(--font-mono, var(--mono));
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: color 180ms ease, padding-left 180ms ease;
}

.model-next nav a:hover,
.model-next nav a:focus-visible {
  padding-left: 6px;
  color: var(--red-on-dark);
}

.model-review {
  margin-bottom: 64px;
}

.compatibility-notice {
  margin-bottom: 28px;
  padding: 22px 24px;
  display: grid;
  grid-template-columns: minmax(150px, 0.35fr) minmax(0, 1fr);
  gap: 28px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--red);
  background: var(--white);
}

.compatibility-notice > span {
  color: var(--red);
  font: 700 11px/1.5 var(--font-mono, var(--mono));
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.compatibility-notice strong {
  display: block;
  margin-bottom: 6px;
  font-size: 17px;
}

.compatibility-notice p {
  max-width: 760px;
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.65;
}

.error-page {
  min-height: 560px;
  padding: clamp(60px, 10vw, 130px) 0;
  display: grid;
  grid-template-columns: minmax(150px, 0.32fr) minmax(0, 1fr);
  gap: clamp(30px, 7vw, 100px);
  align-items: start;
}

.error-page > span {
  color: var(--red);
  font: 700 11px/1.5 var(--font-mono, var(--mono));
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.error-page h1 {
  max-width: 760px;
  margin: 0 0 22px;
  font-size: clamp(48px, 8vw, 96px);
  line-height: 0.95;
  letter-spacing: -0.06em;
}

.error-page p {
  max-width: 620px;
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.error-page .content-actions {
  margin-top: 30px;
}

.error-page__content {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(240px, 0.48fr);
  gap: clamp(36px, 6vw, 84px);
  align-items: center;
}

.error-page__copy {
  min-width: 0;
}

.fuel-gauge {
  position: relative;
  width: min(100%, 340px);
  justify-self: end;
  padding: 8px;
  color: var(--ink);
  isolation: isolate;
}

.fuel-gauge::before {
  position: absolute;
  z-index: -1;
  top: -24px;
  left: -24px;
  width: calc(100% + 48px);
  aspect-ratio: 1;
  border: 1px solid rgba(22, 23, 22, 0.08);
  border-radius: 50%;
  content: "";
}

.fuel-gauge__dial {
  position: relative;
  aspect-ratio: 1;
  overflow: hidden;
  border: 1px solid rgba(22, 23, 22, 0.2);
  border-radius: 50%;
  background:
    radial-gradient(circle at 50% 56%, rgba(189, 48, 40, 0.07), transparent 34%),
    radial-gradient(circle, rgba(255, 255, 255, 0.34) 0 54%, transparent 55% 100%);
}

.fuel-gauge__dial::before {
  position: absolute;
  inset: 8px;
  border-radius: 50%;
  content: "";
  opacity: 0.32;
  background: repeating-conic-gradient(from 220deg, var(--ink) 0 1deg, transparent 1deg 12deg);
  -webkit-mask: radial-gradient(circle, transparent 0 73%, #000 74% 78%, transparent 79%);
  mask: radial-gradient(circle, transparent 0 73%, #000 74% 78%, transparent 79%);
}

.fuel-gauge__dial::after {
  position: absolute;
  inset: 34px;
  border: 1px solid rgba(22, 23, 22, 0.11);
  border-radius: 50%;
  content: "";
}

.fuel-gauge__tick,
.fuel-gauge__warning,
.fuel-gauge__range,
.fuel-gauge > p {
  font-family: var(--font-mono, var(--mono));
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.fuel-gauge__tick {
  position: absolute;
  z-index: 2;
  color: var(--muted);
  font-size: 10px;
  font-weight: 700;
}

.fuel-gauge__tick--e {
  top: 44%;
  left: 11%;
  color: var(--red);
}

.fuel-gauge__tick--half {
  top: 12%;
  left: 50%;
  transform: translateX(-50%);
}

.fuel-gauge__tick--f {
  top: 44%;
  right: 11%;
}

.fuel-gauge__needle {
  position: absolute;
  z-index: 4;
  top: 56%;
  left: 50%;
  width: 37%;
  height: 2px;
  background: linear-gradient(90deg, var(--red) 0 82%, transparent 83%);
  box-shadow: 0 0 7px rgba(189, 48, 40, 0.28);
  transform: rotate(-145deg);
  transform-origin: 0 50%;
  animation: fuel-needle 7.5s cubic-bezier(0.45, 0, 0.22, 1) infinite;
}

.fuel-gauge__hub {
  position: absolute;
  z-index: 5;
  top: 56%;
  left: 50%;
  width: 12px;
  height: 12px;
  border: 2px solid var(--ink);
  border-radius: 50%;
  background: var(--paper);
  transform: translate(-50%, -50%);
}

.fuel-gauge__range {
  position: absolute;
  z-index: 3;
  top: 29%;
  left: 50%;
  display: grid;
  justify-items: center;
  color: var(--ink);
  transform: translateX(-50%);
}

.fuel-gauge__range b {
  font: 700 38px/0.9 var(--sans);
  letter-spacing: -0.05em;
}

.fuel-gauge__range small {
  margin-top: 7px;
  color: var(--muted);
  font-size: 8px;
}

.fuel-gauge__warning {
  position: absolute;
  z-index: 3;
  bottom: 17%;
  left: 50%;
  display: flex;
  gap: 7px;
  align-items: center;
  color: var(--red);
  font-size: 9px;
  font-weight: 700;
  transform: translateX(-50%);
  animation: fuel-warning 7.5s ease-in-out infinite;
}

.fuel-gauge__warning i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 10px currentColor;
}

.fuel-gauge > p {
  margin: 16px 2px 0;
  padding-top: 12px;
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  border-top: 1px solid var(--line);
  font-size: 9px;
}

.fuel-gauge > p span:first-child {
  color: var(--red);
}

@keyframes fuel-needle {
  0%, 18% { transform: rotate(-35deg); }
  64% { transform: rotate(-145deg); }
  70% { transform: rotate(-138deg); }
  76%, 92% { transform: rotate(-145deg); }
  100% { transform: rotate(-35deg); }
}

@keyframes fuel-warning {
  0%, 48%, 100% { opacity: 0.22; }
  62%, 68%, 76%, 84%, 92% { opacity: 1; }
  65%, 72%, 80%, 88% { opacity: 0.35; }
}

@media (max-width: 980px) {
  .error-page__content {
    grid-template-columns: 1fr;
  }

  .fuel-gauge {
    width: min(100%, 290px);
    justify-self: start;
  }
}

@media (max-width: 520px) {
  .fuel-gauge {
    width: min(100%, 260px);
    padding: 8px;
  }
}



/* Open, segmented half-dial used by the custom 404 page. */
.fuel-gauge {
  width: min(100%, 360px);
  padding: 0;
}

.fuel-gauge::before {
  display: none;
}

.fuel-gauge__dial {
  height: 176px;
  aspect-ratio: auto;
  overflow: visible;
  border: 0;
  border-radius: 0;
  background: none;
}

.fuel-gauge__dial::before {
  display: none;
}

.fuel-gauge__dial::after {
  display: none;
}

.fuel-gauge__segment {
  position: absolute;
  z-index: 3;
  top: 24px;
  left: calc(50% - 1px);
  width: 3px;
  height: 11px;
  background: #737670;
  transform-origin: 50% 126px;
  box-shadow: 0 0 0 0.5px rgba(22, 23, 22, 0.08);
}

.fuel-gauge__segment:nth-child(1) { transform: rotate(68deg); animation: fuel-segment-1 8s linear infinite; }
.fuel-gauge__segment:nth-child(2) { transform: rotate(56.7deg); animation: fuel-segment-2 8s linear infinite; }
.fuel-gauge__segment:nth-child(3) { transform: rotate(45.3deg); animation: fuel-segment-3 8s linear infinite; }
.fuel-gauge__segment:nth-child(4) { transform: rotate(34deg); animation: fuel-segment-4 8s linear infinite; }
.fuel-gauge__segment:nth-child(5) { transform: rotate(22.7deg); animation: fuel-segment-5 8s linear infinite; }
.fuel-gauge__segment:nth-child(6) { transform: rotate(11.3deg); animation: fuel-segment-6 8s linear infinite; }
.fuel-gauge__segment:nth-child(7) { transform: rotate(0deg); animation: fuel-segment-7 8s linear infinite; }
.fuel-gauge__segment:nth-child(8) { transform: rotate(-11.3deg); animation: fuel-segment-8 8s linear infinite; }
.fuel-gauge__segment:nth-child(9) { transform: rotate(-22.7deg); animation: fuel-segment-9 8s linear infinite; }
.fuel-gauge__segment:nth-child(10) { transform: rotate(-34deg); animation: fuel-segment-10 8s linear infinite; }
.fuel-gauge__segment:nth-child(11) { transform: rotate(-45.3deg); animation: fuel-segment-11 8s linear infinite; }
.fuel-gauge__segment:nth-child(12) { transform: rotate(-56.7deg); animation: fuel-segment-12 8s linear infinite; }
.fuel-gauge__segment:nth-child(13) { transform: rotate(-68deg); animation: fuel-segment-13 8s linear infinite; }

.fuel-gauge__segment:nth-child(12),
.fuel-gauge__segment:nth-child(13) {
  background: var(--red);
  box-shadow: 0 0 7px rgba(189, 48, 40, 0.28);
}

.fuel-gauge__tick--e {
  top: auto;
  bottom: 8px;
  left: 17%;
}

.fuel-gauge__tick--half {
  top: 52px;
}

.fuel-gauge__tick--f {
  top: auto;
  right: 17%;
  bottom: 8px;
}

.fuel-gauge__range {
  top: auto;
  bottom: 24px;
}

.fuel-gauge__range b {
  font-size: 44px;
}

.fuel-gauge__warning {
  position: relative;
  bottom: auto;
  left: auto;
  width: max-content;
  margin: 12px auto 0;
  transform: none;
  animation: fuel-warning-segmented 8s linear infinite;
}

.fuel-gauge > p {
  margin-top: 16px;
}

@keyframes fuel-segment-1 { 0%, 28% { opacity: 1; } 30%, 90% { opacity: 0.08; } 94%, 100% { opacity: 1; } }
@keyframes fuel-segment-2 { 0%, 31% { opacity: 1; } 33%, 90% { opacity: 0.08; } 94%, 100% { opacity: 1; } }
@keyframes fuel-segment-3 { 0%, 34% { opacity: 1; } 36%, 90% { opacity: 0.08; } 94%, 100% { opacity: 1; } }
@keyframes fuel-segment-4 { 0%, 37% { opacity: 1; } 39%, 90% { opacity: 0.08; } 94%, 100% { opacity: 1; } }
@keyframes fuel-segment-5 { 0%, 40% { opacity: 1; } 42%, 90% { opacity: 0.08; } 94%, 100% { opacity: 1; } }
@keyframes fuel-segment-6 { 0%, 43% { opacity: 1; } 45%, 90% { opacity: 0.08; } 94%, 100% { opacity: 1; } }
@keyframes fuel-segment-7 { 0%, 46% { opacity: 1; } 48%, 90% { opacity: 0.08; } 94%, 100% { opacity: 1; } }
@keyframes fuel-segment-8 { 0%, 49% { opacity: 1; } 51%, 90% { opacity: 0.08; } 94%, 100% { opacity: 1; } }
@keyframes fuel-segment-9 { 0%, 52% { opacity: 1; } 54%, 90% { opacity: 0.08; } 94%, 100% { opacity: 1; } }
@keyframes fuel-segment-10 { 0%, 55% { opacity: 1; } 57%, 90% { opacity: 0.08; } 94%, 100% { opacity: 1; } }
@keyframes fuel-segment-11 { 0%, 58% { opacity: 1; } 60%, 90% { opacity: 0.08; } 94%, 100% { opacity: 1; } }
@keyframes fuel-segment-12 { 0%, 61% { opacity: 1; } 63%, 90% { opacity: 0.08; } 94%, 100% { opacity: 1; } }
@keyframes fuel-segment-13 { 0%, 64% { opacity: 1; } 66%, 90% { opacity: 0.08; } 94%, 100% { opacity: 1; } }

@keyframes fuel-warning-segmented {
  0%, 63%, 92%, 100% { opacity: 0.18; }
  67%, 73%, 79%, 85%, 90% { opacity: 1; }
  70%, 76%, 82%, 88% { opacity: 0.28; }
}

@media (max-width: 980px) {
  .fuel-gauge {
    width: min(100%, 330px);
  }
}

@media (max-width: 520px) {
  .fuel-gauge {
    width: min(100%, 290px);
  }

  .fuel-gauge__dial {
    height: 148px;
  }

  .fuel-gauge__segment {
    top: 20px;
    height: 10px;
    transform-origin: 50% 105px;
  }

  .fuel-gauge__tick--half {
    top: 45px;
  }

  .fuel-gauge__range {
    bottom: 20px;
  }

  .fuel-gauge__range b {
    font-size: 38px;
  }
}


.guide-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.guide-hub-grid {
  margin-bottom: 18px;
}

.guide-hub-grid .guide-card {
  min-height: 220px;
  border-top: 2px solid var(--ink);
}

.guide-card {
  position: relative;
  min-height: 250px;
  padding: 32px;
  background: var(--white);
  border: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.guide-card:hover,
.guide-card:focus-visible {
  transform: translateY(-4px);
  border-color: #aaa9a3;
  box-shadow: 0 18px 42px rgba(22, 23, 22, 0.08);
}

.guide-card.featured {
  grid-column: 1 / -1;
  min-height: 230px;
  padding-right: clamp(32px, 14vw, 190px);
  border-top: 2px solid var(--red);
}

.guide-card.featured::after {
  content: "01";
  position: absolute;
  right: clamp(24px, 5vw, 70px);
  bottom: -24px;
  color: #f2f1ed;
  font: 700 clamp(96px, 12vw, 164px)/1 var(--font-mono, var(--mono));
  pointer-events: none;
}

.guide-card-meta {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  width: 100%;
}

.guide-card small {
  color: var(--red);
  font: 700 11px/1.5 var(--font-mono, var(--mono));
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.guide-card-meta small:last-child {
  color: var(--muted);
  text-align: right;
}

.guide-card h2 {
  position: relative;
  z-index: 1;
  margin: 28px 0 12px;
  font-size: 24px;
  line-height: 1.15;
}

.guide-card.featured h2 {
  max-width: 760px;
  font-size: clamp(28px, 3vw, 40px);
}

.guide-card p {
  position: relative;
  z-index: 1;
  margin: 0 0 24px;
  color: var(--muted);
  line-height: 1.65;
}

.guide-card.featured p {
  max-width: 720px;
}

.guide-card-link {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: auto;
  color: var(--ink);
  font: 700 11px/1.5 var(--font-mono, var(--mono));
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.guide-card-link i {
  position: relative;
  display: block;
  width: 20px;
  height: 1px;
  background: var(--red);
  transition: width 0.2s ease;
}

.guide-card-link i::after {
  content: "";
  position: absolute;
  top: -3px;
  right: 0;
  width: 7px;
  height: 7px;
  border-top: 1px solid var(--red);
  border-right: 1px solid var(--red);
  transform: rotate(45deg);
}

.guide-card:hover .guide-card-link i,
.guide-card:focus-visible .guide-card-link i {
  width: 28px;
}

@media (prefers-reduced-motion: reduce) {
  .action-button,
  .filter-actions button,
  .copy-part-number,
  .guide-card,
  .guide-card-link i,
  summary b,
  summary i,
  .technical-disclosure .disclosure-label::after,
  .site-nav a,
  .site-nav a::after {
    transition: none;
  }
}

.article-stack {
  border-top: 1px solid var(--line);
}

.article-stack article {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 24px;
  padding: 30px 0;
  border-bottom: 1px solid var(--line);
}

.article-stack article > span {
  color: var(--red);
  font: 700 11px var(--font-mono, var(--mono));
}

.article-stack h2 {
  margin: 0 0 10px;
  font-size: 24px;
}

.article-stack p {
  max-width: 780px;
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.tutorial-head {
  margin-bottom: 42px;
}

.tutorial-jump {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  width: 100%;
  margin-top: 16px;
  border: 1px solid var(--line);
  background: var(--white);
}

.tutorial-jump a {
  min-height: 54px;
  padding: 0 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font: 700 11px/1.4 var(--font-mono, var(--mono));
  letter-spacing: 0.06em;
  text-align: center;
  text-transform: uppercase;
  transition: background 180ms ease, color 180ms ease;
}

.tutorial-jump a + a {
  border-left: 1px solid var(--line);
}

.tutorial-jump a:hover,
.tutorial-jump a:focus-visible {
  background: var(--ink);
  color: var(--white);
}

.tutorial-requirements {
  display: grid;
  grid-template-columns: minmax(240px, 0.7fr) minmax(0, 1.3fr);
  gap: clamp(30px, 6vw, 80px);
  margin: 0 0 72px;
  padding: clamp(30px, 5vw, 58px);
  background: var(--ink);
  color: var(--white);
  scroll-margin-top: 100px;
}

.tutorial-requirements small,
.tutorial-step small,
.tutorial-step header > span,
.tutorial-step figcaption {
  font: 700 11px/1.5 var(--font-mono, var(--mono));
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.tutorial-requirements small,
.tutorial-step small,
.tutorial-step header > span {
  color: var(--red-on-dark, var(--red));
}

.tutorial-requirements h2 {
  max-width: 420px;
  margin: 16px 0 0;
  font-size: clamp(28px, 3.5vw, 46px);
}

.tutorial-requirements article {
  padding: 18px 0;
  border-bottom: 1px solid #343633;
}

.tutorial-requirements article:first-child {
  padding-top: 0;
}

.tutorial-requirements article:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.tutorial-requirements h3 {
  margin: 0 0 8px;
  font-size: 18px;
}

.tutorial-requirements p {
  margin: 0;
  color: #b9bbb6;
  line-height: 1.65;
}

.tutorial-steps {
  border-top: 1px solid var(--line);
  scroll-margin-top: 100px;
}

.tutorial-step {
  display: grid;
  grid-template-columns: minmax(260px, 0.68fr) minmax(0, 1.32fr);
  gap: clamp(28px, 5vw, 64px);
  align-items: start;
  padding: clamp(42px, 6vw, 76px) 0;
  border-bottom: 1px solid var(--line);
}

.tutorial-step header {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
}

.tutorial-step h2 {
  margin: 8px 0 14px;
  font-size: clamp(25px, 3vw, 38px);
  line-height: 1.08;
}

.tutorial-step p {
  margin: 0;
  color: var(--muted);
  line-height: 1.72;
}

.tutorial-step figure {
  margin: 0;
  border: 1px solid var(--line);
  border-top: 3px solid var(--red);
  background: var(--white);
  box-shadow: 0 18px 44px rgb(22 23 22 / 8%);
}

.tutorial-step figure a {
  display: block;
  padding: clamp(8px, 1.25vw, 16px);
  background: #111;
  cursor: zoom-in;
}

.tutorial-step img {
  display: block;
  width: 100%;
  height: auto;
}

.tutorial-step figcaption {
  padding: 12px 16px;
  color: var(--muted);
}

body.lightbox-open {
  overflow: hidden;
}

.image-lightbox {
  width: 100%;
  max-width: none;
  height: 100%;
  max-height: none;
  margin: 0;
  padding: clamp(18px, 4vw, 56px);
  border: 0;
  background: transparent;
  color: var(--white);
  overflow: hidden;
}

.image-lightbox[open] {
  display: grid;
  place-items: center;
}

.image-lightbox::backdrop {
  background: rgb(8 9 8 / 72%);
  backdrop-filter: blur(14px) saturate(0.75);
  animation: lightbox-backdrop-in 240ms ease both;
}

.image-lightbox-shell {
  position: relative;
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto;
  width: min(92vw, 1600px);
  max-height: 90vh;
  border: 1px solid rgb(255 255 255 / 18%);
  border-top: 3px solid var(--red);
  background: #0f100f;
  box-shadow: 0 30px 100px rgb(0 0 0 / 48%);
  opacity: 0;
  transform: translateY(14px) scale(0.96);
  transition: opacity 240ms ease, transform 320ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.image-lightbox.is-open .image-lightbox-shell {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.image-lightbox.is-closing .image-lightbox-shell {
  opacity: 0;
  transform: translateY(8px) scale(0.98);
}

.image-lightbox-media {
  display: grid;
  min-height: 0;
  padding: clamp(10px, 1.5vw, 20px);
}

.image-lightbox img {
  display: block;
  width: 100%;
  height: 100%;
  max-height: calc(90vh - 74px);
  object-fit: contain;
}

.image-lightbox-caption {
  margin: 0;
  padding: 13px 18px 15px;
  border-top: 1px solid rgb(255 255 255 / 12%);
  color: #c5c7c2;
  font: 700 11px/1.5 var(--font-mono, var(--mono));
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.image-lightbox-close {
  position: absolute;
  z-index: 2;
  top: 14px;
  right: 14px;
  width: 42px;
  height: 42px;
  border: 1px solid rgb(255 255 255 / 28%);
  border-radius: 50%;
  background: rgb(15 16 15 / 82%);
  color: var(--white);
  cursor: pointer;
  transition: background 180ms ease, border-color 180ms ease, transform 180ms ease;
}

.image-lightbox-close::before,
.image-lightbox-close::after {
  content: "";
  position: absolute;
  top: 19px;
  left: 12px;
  width: 16px;
  height: 1px;
  background: currentColor;
}

.image-lightbox-close::before {
  transform: rotate(45deg);
}

.image-lightbox-close::after {
  transform: rotate(-45deg);
}

.image-lightbox-close:hover,
.image-lightbox-close:focus-visible {
  border-color: var(--red-on-dark);
  background: var(--red);
  transform: rotate(4deg);
}

@keyframes lightbox-backdrop-in {
  from {
    background: rgb(8 9 8 / 0%);
    backdrop-filter: blur(0) saturate(1);
  }
}

@media (prefers-reduced-motion: reduce) {
  .image-lightbox::backdrop {
    animation: none;
  }

  .image-lightbox-shell {
    transition: none;
  }
}

.tutorial-safety {
  padding-top: 18px;
  scroll-margin-top: 100px;
}

.tutorial-safety .review-note a {
  border-bottom: 1px solid var(--red);
  color: var(--ink);
}

.mazdaedit-tutorials {
  margin: 54px 0;
}

.mazdaedit-tutorials .section-head {
  max-width: 760px;
}

.mazdaedit-tutorial-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border: 1px solid var(--line);
  background: var(--white);
}

.mazdaedit-tutorial-grid a {
  min-height: 210px;
  padding: clamp(26px, 4vw, 44px);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  border-top: 2px solid transparent;
  transition: border-color 180ms ease, background 180ms ease;
}

.mazdaedit-tutorial-grid a + a {
  border-left: 1px solid var(--line);
}

.mazdaedit-tutorial-grid a:hover,
.mazdaedit-tutorial-grid a:focus-visible {
  border-top-color: var(--red);
  background: #fbfaf7;
}

.mazdaedit-tutorial-grid span {
  color: var(--red);
  font: 700 11px/1.5 var(--font-mono, var(--mono));
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.mazdaedit-tutorial-grid h3 {
  margin: 26px 0 10px;
  font-size: clamp(22px, 2.4vw, 32px);
}

.mazdaedit-tutorial-grid p {
  max-width: 500px;
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
}

.checker-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(300px, 0.85fr);
  gap: 28px;
  align-items: start;
}

.checker-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  padding: 28px;
  border: 1px solid var(--line);
  background: var(--white);
}

.checker-form-section {
  grid-column: 1 / -1;
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
}

.checker-form-section + .checker-form-section {
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.checker-form-section legend,
.checker-form-section > summary {
  width: 100%;
  margin: 0 0 16px;
  color: var(--ink);
  font: 700 12px/1.5 var(--font-mono, var(--mono));
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.checker-form-section legend span,
.checker-form-section > summary strong {
  margin-right: 10px;
  color: var(--red);
}

.checker-field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.checker-advanced > summary {
  display: flex;
  min-height: 38px;
  align-items: center;
  margin-bottom: 0;
  cursor: pointer;
  list-style: none;
}

.checker-advanced > summary::-webkit-details-marker {
  display: none;
}

.checker-advanced > summary::after {
  content: "+";
  margin-left: auto;
  color: var(--red);
  font-size: 18px;
}

.checker-advanced[open] > summary {
  margin-bottom: 16px;
}

.checker-advanced[open] > summary::after {
  content: "−";
}

.checker-advanced > summary span {
  margin-left: 8px;
  color: var(--muted);
  font-size: 10px;
}

.checker-form label {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font: 700 11px/1.5 var(--font-mono, var(--mono));
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.checker-form input,
.checker-form select,
.checker-form textarea {
  width: 100%;
  min-height: 46px;
  border: 1px solid var(--line);
  border-radius: 0;
  background: var(--paper);
  color: var(--ink);
  padding: 11px 12px;
  font: 14px/1.4 var(--font-geist, var(--sans));
  text-transform: none;
}

.checker-form textarea {
  resize: vertical;
}

.checker-form .full {
  grid-column: 1 / -1;
}

.checker-form button {
  cursor: pointer;
}

.checker-result {
  min-height: 300px;
  padding: clamp(24px, 3vw, 30px);
  background: var(--ink);
  color: var(--white);
  position: sticky;
  top: 96px;
}

.checker-result > small {
  color: var(--red-on-dark);
}

.checker-result h2 {
  margin: 20px 0 10px;
  font-size: clamp(27px, 3vw, 32px);
  line-height: 1.08;
}

.checker-result p {
  color: #b9bbb6;
  line-height: 1.65;
}

.checker-result .action-button {
  margin-top: 16px;
  border-color: var(--white);
  background: var(--white);
  color: var(--ink);
}

.checker-result .checker-primary-action {
  width: fit-content;
  margin-top: 18px;
  border-color: var(--red-on-dark);
  background: var(--red-on-dark);
  color: var(--white);
}

.checker-result .checker-primary-action:hover,
.checker-result .checker-primary-action:focus-visible {
  border-color: var(--white);
  background: var(--white);
  color: var(--ink);
}

.garage-panel {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(420px, 1.1fr);
  gap: 28px;
  align-items: end;
  margin: 0 0 28px;
  padding: 24px 28px;
  border: 1px solid var(--line);
  background: #edede8;
}

.garage-panel small,
.update-log time,
.update-log .update-phase {
  color: var(--red);
  font: 700 11px/1.5 var(--font-mono, var(--mono));
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.parts-garage .garage-controls {
  grid-template-columns: minmax(220px, 1fr) auto;
}

.garage-feedback {
  grid-column: 1 / -1;
  min-height: 1.5em;
  color: #5f615d;
  font: 700 11px/1.5 var(--font-mono, var(--mono));
  text-transform: uppercase;
}

.garage-panel h2 {
  margin: 7px 0 5px;
  font-size: 23px;
}

.garage-panel p {
  margin: 0;
  color: #5f615d;
}

.garage-panel .garage-capacity {
  margin-top: 8px;
  color: var(--ink);
  font: 700 10px/1.5 var(--font-mono, var(--mono));
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.garage-controls {
  display: grid;
  grid-template-columns: minmax(180px, 1fr) auto auto;
  gap: 9px;
  align-items: end;
}

.garage-controls label {
  display: grid;
  min-width: 0;
  gap: 7px;
  color: #5f615d;
  font: 700 11px/1.5 var(--font-mono, var(--mono));
  text-transform: uppercase;
}

.garage-controls select {
  width: 100%;
  min-width: 0;
  min-height: 44px;
  border: 1px solid var(--line);
  background: var(--white);
  padding: 0 11px;
}

.checker-form-actions,
.checker-result-actions,
.shortlist-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}

.checker-draft-status {
  display: flex;
  min-height: 44px;
  align-items: center;
  color: var(--muted);
  font: 700 10px/1.5 var(--font-mono, var(--mono));
  text-transform: uppercase;
}

.checker-result-actions .action-button {
  margin-top: 0;
}

.checker-checklist {
  margin-top: 22px;
  border-block: 1px solid #343633;
}

.checker-checklist summary {
  display: flex;
  min-height: 52px;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
  list-style: none;
}

.checker-checklist summary::-webkit-details-marker {
  display: none;
}

.checker-checklist summary::after {
  content: "+";
  display: grid;
  width: 24px;
  height: 24px;
  flex: 0 0 24px;
  place-items: center;
  border: 1px solid #4b4d49;
  color: var(--red-on-dark);
  font: 700 16px/1 var(--font-mono, var(--mono));
}

.checker-checklist[open] summary::after {
  content: "−";
}

.checker-checklist summary span {
  margin-left: auto;
  color: #858781;
  font: 700 9px/1.4 var(--font-mono, var(--mono));
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.checker-checklist ul {
  margin: 0 0 18px;
  padding-left: 18px;
  color: #b9bbb6;
  font-size: 12px;
  line-height: 1.6;
}

.checker-checklist li + li {
  margin-top: 7px;
}

.part-shortlist {
  margin: 28px 0 54px;
  padding: clamp(24px, 4vw, 38px);
  border: 1px solid var(--ink);
  background: var(--white);
}

.part-shortlist h2 {
  margin: 8px 0;
  font-size: clamp(24px, 3vw, 34px);
}

.part-shortlist ul {
  margin: 18px 0 22px;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.part-shortlist li {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.part-shortlist .shortlist-unavailable {
  color: var(--muted);
}

.shortlist-toggle {
  display: block;
  width: fit-content;
  min-height: 34px;
  margin: 14px 0 0 auto;
  padding: 0 11px;
  border: 1px solid var(--line);
  background: var(--white);
  cursor: pointer;
  font: 700 11px var(--font-mono, var(--mono));
  text-transform: uppercase;
}

.shortlist-toggle[aria-pressed="true"] {
  border-color: var(--red);
  background: var(--red);
  color: var(--white);
}

.update-log {
  margin-bottom: 64px;
  border-top: 1px solid var(--ink);
}

.update-log article {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 36px;
  padding: 30px 0;
  border-bottom: 1px solid var(--line);
}

.update-log h2 {
  margin: 0 0 9px;
  font-size: 24px;
}

.update-log p {
  max-width: 720px;
  margin: 0;
  color: var(--muted);
}

.checker-followup {
  display: block;
  width: fit-content;
  margin-top: 18px;
  border-bottom: 1px solid var(--red-on-dark);
  color: var(--white);
  font: 700 10px/1.6 var(--font-mono, var(--mono));
  text-transform: uppercase;
}

[hidden] {
  display: none !important;
}

.data-status,
.reference-box {
  display: grid;
  grid-template-columns: 170px minmax(0, 1fr);
  gap: 28px;
  margin: 0 0 28px;
  padding: 22px 26px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--red);
  background: var(--white);
}

.reference-summary-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 18px;
}

.reference-summary-grid .data-status,
.reference-summary-grid .reference-box,
.reference-summary-grid .compatibility-notice {
  grid-template-columns: 1fr;
  gap: 8px;
  margin: 0;
  padding: 16px 18px;
}

.reference-summary-grid .data-status p,
.reference-summary-grid .reference-box p,
.reference-summary-grid .compatibility-notice p {
  font-size: 11px;
  line-height: 1.55;
}

.noscript-notice {
  margin: 0 0 18px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--red);
  background: var(--white);
}

.noscript-notice strong {
  display: block;
  margin-bottom: 5px;
  font-size: 14px;
}

.noscript-notice p {
  max-width: 780px;
  margin: 0 0 12px;
  font-size: 12px;
  line-height: 1.55;
}

.noscript-notice .action-button {
  min-height: 38px;
  padding: 10px 14px;
}

.compact-garage {
  grid-template-columns: minmax(280px, 0.8fr) minmax(420px, 1.2fr);
  gap: 22px;
  margin-bottom: 20px;
  padding: 18px 20px;
}

.compact-garage h2 {
  font-size: 20px;
}

.checker-result-actions {
  display: grid;
  grid-template-columns: 1fr;
  gap: 9px;
  margin-top: 18px;
}

.checker-result-actions .action-button {
  display: flex;
  width: 100%;
  min-height: 45px;
  align-items: center;
  justify-content: center;
  padding-inline: 12px;
  text-align: center;
}

.checker-share-note {
  margin: 14px 0 0;
  padding: 10px 12px;
  border-left: 2px solid var(--red-on-dark);
  background: #1c1e1b;
  font-size: 11px;
  line-height: 1.55;
}

.data-status > span,
.reference-box > strong {
  color: var(--red);
  font: 700 11px/1.6 var(--font-mono, var(--mono));
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.data-status strong {
  display: block;
  margin-bottom: 5px;
}

.data-status p,
.reference-box p {
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
}

.content-section .reference-box {
  margin-top: 22px;
}

.enquiry-confirmation {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 32px;
  padding: 72px 0 96px;
}

.enquiry-confirmation > span,
.confirmation-steps small {
  color: var(--red);
  font: 700 11px/1.5 var(--font-mono, var(--mono));
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.enquiry-confirmation h1 {
  max-width: 820px;
  margin: 0 0 18px;
  font-size: clamp(42px, 6vw, 78px);
  line-height: 0.95;
  letter-spacing: -0.055em;
}

.enquiry-confirmation > div > p {
  max-width: 720px;
  color: var(--muted);
  line-height: 1.7;
}

.confirmation-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 42px 0 28px;
  border: 1px solid var(--line);
  background: var(--white);
}

.confirmation-steps article {
  min-height: 230px;
  padding: 26px;
}

.confirmation-steps article + article {
  border-left: 1px solid var(--line);
}

.confirmation-steps h2 {
  margin: 24px 0 12px;
  font-size: 20px;
}

.confirmation-steps p {
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
}

.checker-result[data-state="no"] {
  border-top: 3px solid var(--red-on-dark);
}

.checker-result[data-state="likely"] {
  border-top: 3px solid #6fbd83;
}

.checker-result[data-state="verify"] {
  border-top: 3px solid #d8b45d;
}

.checker-summary {
  margin: 18px 0 0;
  padding: 12px 14px;
  border: 1px solid #343633;
  background: #1c1e1b;
  color: var(--white) !important;
  font: 700 10px/1.6 var(--font-mono, var(--mono));
  text-transform: uppercase;
}

@media (max-width: 520px) {
  .checker-result .checker-primary-action {
    width: 100%;
  }
}

.model-table h2 a {
  border-bottom: 1px solid transparent;
}

.model-table h2 a:hover {
  border-bottom-color: var(--red);
}

.part-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 12px;
  margin-top: 12px;
  color: var(--muted);
  font: 700 8px/1.5 var(--font-mono, var(--mono));
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

@media (max-width: 760px) {
  .model-page .page-head {
    padding: 48px 0 38px;
    row-gap: 22px;
  }

  .model-hero-media {
    margin-top: 20px;
  }

  .model-hero-media-mazda6 img {
    transform: scale(1.2);
  }

  .model-hero-media img {
    aspect-ratio: 16 / 7;
  }

  .model-hero-media figcaption {
    font-size: 9px;
  }
  .guide-summary,
  .guide-grid,
  .checker-layout,
  .checker-form {
    grid-template-columns: 1fr;
  }

  .guide-summary > div {
    min-height: 104px;
    border-right: 0;
    border-bottom: 1px solid #343633;
  }

  .guide-summary > div:last-child {
    border-bottom: 0;
  }

  .checker-form .full {
    grid-column: auto;
  }

  .checker-field-grid {
    grid-template-columns: 1fr;
  }

  .checker-field-grid .full {
    grid-column: auto;
  }

  .checker-result {
    position: static;
  }

  .garage-panel,
  .update-log article {
    grid-template-columns: 1fr;
  }

  .reference-summary-grid {
    grid-template-columns: 1fr;
  }

  .garage-controls {
    grid-template-columns: 1fr 1fr;
  }

  .parts-garage .garage-controls {
    grid-template-columns: 1fr;
  }

  .garage-controls label {
    grid-column: 1 / -1;
  }

  .article-stack article {
    grid-template-columns: 38px minmax(0, 1fr);
    gap: 12px;
  }

  .guide-grid {
    gap: 12px;
  }

  .guide-card,
  .guide-card.featured {
    min-height: 240px;
    padding: 24px;
  }

  .guide-card.featured::after {
    right: 16px;
    bottom: -10px;
    font-size: 88px;
  }

  .model-priorities,
  .model-next {
    grid-template-columns: 1fr;
  }

  .model-priorities article {
    min-height: 0;
  }

  .model-priorities article + article {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .model-checklist li {
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 10px;
  }

  .tutorial-jump,
  .tutorial-requirements,
  .tutorial-step {
    grid-template-columns: 1fr;
  }

  .mazdaedit-tutorial-grid {
    grid-template-columns: 1fr;
  }

  .mazdaedit-tutorial-grid a + a {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .tutorial-jump a + a {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .tutorial-requirements {
    margin-bottom: 48px;
  }

  .tutorial-step {
    gap: 26px;
  }

  .guide-card h2,
  .guide-card.featured h2 {
    margin-top: 22px;
    font-size: 23px;
  }

  .compatibility-notice,
  .data-status,
  .reference-box,
  .enquiry-confirmation,
  .error-page {
    grid-template-columns: 1fr;
  }

  .confirmation-steps {
    grid-template-columns: 1fr;
  }

  .confirmation-steps article {
    min-height: 0;
  }

  .confirmation-steps article + article {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .error-page {
    min-height: 480px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

@media (forced-colors: active) {
  :focus-visible {
    outline-color: Highlight;
  }
  .badge,
  .action-button,
  .data-status,
  .reference-box {
    border: 1px solid CanvasText;
  }
}