:root {
  --canvas-night: #000000;
  --canvas-night-soft: #111318;
  --canvas-light: #ffffff;
  --canvas-cool: #f4f7fb;
  --canvas-warm: #f6f0e8;
  --accent-blue: #73c7ff;
  --accent-green: #61d39b;
  --accent-amber: #f5b44b;
  --accent-red: #ff6b5f;
  --hairline-on-dark: #343942;
  --hairline-on-light: #e0e0e8;
  --ink-mute: #5a5a5f;
  --on-primary: #ffffff;
  --on-primary-mute: #d9dde5;
  --font-display: Arial, "Helvetica Neue", Helvetica, sans-serif;
  --font-body: Arial, "Helvetica Neue", Helvetica, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  margin: 0;
  background: var(--canvas-night);
  color: var(--on-primary);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: 0;
  overflow-x: hidden;
}

a {
  color: inherit;
}

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

.site-nav {
  position: fixed;
  inset: 0 0 auto;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding: 24px 32px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  background:
    linear-gradient(180deg, rgba(17, 19, 24, 0.98), rgba(0, 0, 0, 0.94));
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.34);
  color: var(--on-primary);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  text-transform: uppercase;
  letter-spacing: 0;
  font-size: 13px;
  font-weight: 700;
}

section[id] {
  scroll-margin-top: 96px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  white-space: nowrap;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 46px;
  height: 26px;
  border: 1px solid var(--on-primary);
  border-radius: 32px;
  line-height: 1;
}

.brand-name {
  letter-spacing: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-links a {
  text-decoration: none;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  text-decoration: underline;
  text-underline-offset: 5px;
}

.menu-toggle {
  display: none;
  border: 1px solid var(--on-primary);
  border-radius: 32px;
  background: transparent;
  color: var(--on-primary);
  padding: 14px 18px;
  text-transform: uppercase;
  letter-spacing: 0;
  font-size: 13px;
  font-weight: 700;
}

.hero-band {
  position: relative;
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 470px);
  align-items: end;
  gap: 48px;
  padding: 136px 56px 56px;
  background: var(--canvas-night) url("assets/diagnostic-hero.png") center / cover no-repeat;
}

.hero-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(0, 0, 0, 0.86), rgba(0, 0, 0, 0.48) 46%, rgba(0, 0, 0, 0.78)),
    linear-gradient(0deg, rgba(0, 0, 0, 0.84), rgba(0, 0, 0, 0.08) 42%);
}

.hero-band::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(115, 199, 255, 0.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(115, 199, 255, 0.07) 1px, transparent 1px);
  background-size: 92px 92px;
  mask-image: linear-gradient(90deg, rgba(0, 0, 0, 0.58), transparent 62%);
  animation: grid-drift 18s linear infinite;
}

.hero-band > * {
  position: relative;
  z-index: 2;
}

.hero-copy {
  min-width: 0;
  max-width: 780px;
  padding-bottom: 24px;
}

.eyebrow {
  margin: 0 0 12px;
  text-transform: uppercase;
  letter-spacing: 0;
  font-size: 12px;
  line-height: 2;
  color: var(--on-primary-mute);
}

h1,
h2,
h3,
h4,
p {
  margin-top: 0;
}

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

h1 {
  max-width: 860px;
  margin-bottom: 24px;
  font-size: 80px;
  line-height: 0.95;
  letter-spacing: 0;
}

.hero-lead {
  max-width: 590px;
  margin-bottom: 28px;
  color: var(--on-primary-mute);
  line-height: 1.7;
}

.hero-proof {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-proof span {
  border: 1px solid var(--hairline-on-dark);
  border-radius: 999px;
  background: rgba(17, 19, 24, 0.72);
  color: var(--canvas-cool);
  padding: 10px 12px;
  text-transform: uppercase;
  font-size: 12px;
}

.fault-stream {
  width: 100%;
  max-width: 620px;
  margin-top: 28px;
  border: 1px solid rgba(115, 199, 255, 0.24);
  border-radius: 8px;
  background: rgba(7, 10, 14, 0.72);
  overflow: hidden;
}

.fault-stream-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  border-bottom: 1px solid var(--hairline-on-dark);
  padding: 12px 14px;
  color: var(--on-primary-mute);
  text-transform: uppercase;
  font-size: 12px;
}

.fault-stream-head strong {
  color: var(--on-primary);
  font-weight: 700;
}

.stream-track {
  display: flex;
  gap: 8px;
  width: max-content;
  padding: 12px 14px;
  animation: stream-slide 26s linear infinite;
}

.stream-track span {
  flex: 0 0 auto;
  border: 1px solid var(--hairline-on-dark);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  padding: 8px 10px;
  color: var(--canvas-cool);
  text-transform: uppercase;
  font-size: 12px;
}

.ad-band {
  padding: 24px 56px;
  background: var(--canvas-night);
}

.compact-ad-band {
  padding-top: 0;
}

.ad-slot {
  display: grid;
  align-content: center;
  justify-items: center;
  gap: 6px;
  width: 100%;
  max-width: 1180px;
  min-height: 96px;
  margin: 0 auto;
  border: 1px dashed rgba(217, 221, 229, 0.34);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.055), transparent),
    rgba(17, 19, 24, 0.72);
  color: var(--on-primary-mute);
  padding: 18px;
  text-align: center;
}

.ad-slot span,
.ad-slot strong,
.ad-slot small {
  display: block;
}

.ad-slot span {
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 0;
}

.ad-slot strong {
  color: var(--on-primary);
  text-transform: uppercase;
  font-family: var(--font-display);
  font-size: 18px;
  line-height: 1.15;
}

.ad-slot small {
  max-width: 440px;
  font-size: 12px;
  line-height: 1.4;
}

.hero-ad-slot {
  justify-items: start;
  max-width: 620px;
  min-height: 78px;
  margin: 16px 0 0;
  background: rgba(7, 10, 14, 0.62);
  text-align: left;
}

.ad-slot-leaderboard {
  min-height: 112px;
}

.result-ad-slot {
  min-height: 118px;
  margin-top: 24px;
}

.local-repair-panel {
  display: grid;
  grid-template-columns: minmax(0, 0.78fr) minmax(360px, 1fr);
  gap: 1px;
  max-width: 1180px;
  margin: 0 auto;
  border: 1px solid var(--hairline-on-dark);
  background: var(--hairline-on-dark);
}

.local-repair-copy,
.repair-search-card {
  background: var(--canvas-night-soft);
  padding: 32px;
}

.local-repair-copy h2 {
  margin-bottom: 18px;
  font-size: 46px;
  line-height: 1.05;
}

.local-repair-copy p:last-child {
  margin-bottom: 0;
  color: var(--on-primary-mute);
  line-height: 1.7;
}

.repair-search-card label {
  display: block;
  margin-bottom: 8px;
  color: var(--on-primary-mute);
  text-transform: uppercase;
  font-size: 12px;
}

.repair-search-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
}

.repair-search-row input {
  min-width: 0;
  min-height: 52px;
  width: 100%;
  border: 1px solid var(--hairline-on-light);
  border-radius: 4px;
  background: var(--canvas-light);
  color: var(--canvas-night);
  padding: 12px 16px;
  outline: none;
}

.repair-search-row input:focus {
  border-color: var(--accent-blue);
}

.repair-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-top: 14px;
}

.text-button,
.repair-actions a {
  border: 0;
  background: transparent;
  color: var(--on-primary);
  padding: 0;
  text-decoration: underline;
  text-underline-offset: 5px;
  text-transform: uppercase;
  font-size: 12px;
  font-weight: 700;
}

.repair-status {
  margin: 18px 0 0;
  color: var(--on-primary-mute);
  line-height: 1.55;
}

.repair-results {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.repair-shop-card {
  display: grid;
  gap: 10px;
  border: 1px solid var(--hairline-on-dark);
  border-radius: 8px;
  background: var(--canvas-night);
  padding: 16px;
}

.repair-shop-card strong {
  display: block;
  color: var(--on-primary);
  text-transform: uppercase;
  font-family: var(--font-display);
  font-size: 20px;
  line-height: 1.1;
}

.repair-shop-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--on-primary-mute);
  font-size: 12px;
  text-transform: uppercase;
}

.repair-shop-card p {
  margin-bottom: 0;
  color: var(--on-primary-mute);
  line-height: 1.55;
}

.repair-shop-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.repair-shop-actions a {
  color: var(--on-primary);
  text-decoration: underline;
  text-underline-offset: 5px;
  text-transform: uppercase;
  font-size: 12px;
  font-weight: 700;
}

.ghost-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  border: 1px solid var(--on-primary);
  border-radius: 32px;
  background: transparent;
  color: var(--on-primary);
  padding: 18px 24px;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0;
  font-size: 13px;
  font-weight: 700;
  line-height: 0.94;
}

.ghost-button:hover,
.ghost-button:focus-visible {
  background: var(--canvas-cool);
  color: var(--canvas-night);
}

.compact {
  min-width: 126px;
}

.diagnostic-console {
  position: relative;
  align-self: end;
  min-width: 0;
  width: 100%;
  border: 1px solid var(--hairline-on-dark);
  border-radius: 8px;
  background: rgba(17, 19, 24, 0.92);
  box-shadow: 0 22px 70px rgba(0, 0, 0, 0.35);
  padding: 24px;
  overflow: hidden;
  transition:
    border-color 180ms ease,
    box-shadow 180ms ease,
    transform 180ms ease;
}

.diagnostic-console::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(90deg, transparent, rgba(115, 199, 255, 0.08), transparent),
    linear-gradient(180deg, rgba(255, 255, 255, 0.06), transparent 28%);
  transform: translateX(-72%);
  opacity: 0;
}

.diagnostic-console.is-searching {
  border-color: rgba(115, 199, 255, 0.62);
  box-shadow:
    0 26px 90px rgba(0, 0, 0, 0.44),
    0 0 0 1px rgba(115, 199, 255, 0.18);
}

.diagnostic-console.is-searching::before {
  opacity: 1;
  animation: console-scan 1.4s ease-in-out infinite;
}

.diagnostic-console.is-matched {
  border-color: rgba(97, 211, 155, 0.58);
}

.diagnostic-console.is-fallback {
  border-color: rgba(245, 180, 75, 0.58);
}

.console-topline {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.console-topline h2 {
  margin-bottom: 0;
  font-size: 36px;
  line-height: 1.1;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

.status-badge {
  flex: 0 0 auto;
  border: 1px solid var(--hairline-on-dark);
  border-radius: 32px;
  padding: 9px 12px;
  text-transform: uppercase;
  letter-spacing: 0;
  font-size: 12px;
  line-height: 1;
}

.diagnostic-console.is-searching .status-badge {
  border-color: rgba(115, 199, 255, 0.72);
  color: var(--accent-blue);
}

.diagnostic-console.is-matched .status-badge {
  border-color: rgba(97, 211, 155, 0.72);
  color: var(--accent-green);
}

.diagnostic-console.is-fallback .status-badge {
  border-color: rgba(245, 180, 75, 0.72);
  color: var(--accent-amber);
}

.field-label {
  display: block;
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0;
  font-size: 12px;
}

.console-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin-bottom: 18px;
  border: 1px solid var(--hairline-on-dark);
  background: var(--hairline-on-dark);
}

.console-steps span {
  min-height: 42px;
  display: flex;
  align-items: center;
  background: var(--canvas-night);
  color: var(--on-primary-mute);
  padding: 10px 12px;
  text-transform: uppercase;
  font-size: 12px;
  line-height: 1.25;
}

.analysis-strip {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
  margin: -2px 0 18px;
}

.analysis-strip span {
  display: block;
  height: 4px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.13);
  transform-origin: left center;
}

.diagnostic-console.is-searching .analysis-strip span {
  background: var(--accent-blue);
  animation: signal-pulse 900ms ease-in-out infinite;
}

.diagnostic-console.is-searching .analysis-strip span:nth-child(2) {
  animation-delay: 80ms;
}

.diagnostic-console.is-searching .analysis-strip span:nth-child(3) {
  animation-delay: 160ms;
}

.diagnostic-console.is-searching .analysis-strip span:nth-child(4) {
  animation-delay: 240ms;
}

.diagnostic-console.is-searching .analysis-strip span:nth-child(5) {
  animation-delay: 320ms;
}

.diagnostic-console.is-searching .analysis-strip span:nth-child(6) {
  animation-delay: 400ms;
}

.diagnostic-console.is-searching .analysis-strip span:nth-child(7) {
  animation-delay: 480ms;
}

.search-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
}

.search-row input,
.model-row input,
.model-row select {
  min-width: 0;
  min-height: 52px;
  width: 100%;
  border: 1px solid var(--hairline-on-light);
  border-radius: 4px;
  background: var(--canvas-light);
  color: var(--canvas-night);
  padding: 12px 16px;
  outline: none;
}

.search-row input:focus,
.model-row input:focus,
.model-row select:focus {
  border-color: var(--accent-blue);
}

.model-row {
  display: grid;
  grid-template-columns: 0.82fr 1.18fr 0.82fr;
  gap: 10px;
  margin-top: 12px;
}

.model-row label {
  display: grid;
  gap: 7px;
  color: var(--on-primary-mute);
  text-transform: uppercase;
  font-size: 12px;
}

.quick-signals {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.quick-signals button,
.code-grid button,
.code-card {
  border: 1px solid var(--hairline-on-dark);
  border-radius: 32px;
  background: transparent;
  color: var(--on-primary);
  padding: 10px 12px;
  text-transform: uppercase;
  letter-spacing: 0;
  font-size: 12px;
}

.quick-signals button:hover,
.quick-signals button:focus-visible,
.quick-signals button.is-active,
.code-grid button:hover,
.code-grid button:focus-visible,
.code-card:hover,
.code-card:focus-visible {
  border-color: var(--on-primary);
}

.diagnostic-rail {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  min-width: 0;
  gap: 1px;
  margin-top: 16px;
  border: 1px solid var(--hairline-on-dark);
  background: var(--hairline-on-dark);
}

.diagnostic-rail div {
  min-height: 72px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.045), transparent),
    var(--canvas-night);
  padding: 12px;
}

.diagnostic-rail span,
.diagnostic-rail strong {
  display: block;
  text-transform: uppercase;
}

.diagnostic-rail span {
  margin-bottom: 9px;
  color: var(--on-primary-mute);
  font-size: 11px;
}

.diagnostic-rail strong {
  color: var(--on-primary);
  font-family: var(--font-display);
  font-size: 18px;
  line-height: 1.05;
  overflow-wrap: anywhere;
}

.instant-answer {
  display: grid;
  gap: 10px;
  margin-top: 18px;
  border: 1px solid var(--hairline-on-dark);
  border-radius: 8px;
  background: var(--canvas-night);
  padding: 16px;
}

.instant-answer-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  text-transform: uppercase;
  letter-spacing: 0;
  font-size: 12px;
  color: var(--on-primary-mute);
}

.instant-answer-topline a {
  color: var(--on-primary);
  text-decoration: underline;
  text-underline-offset: 5px;
}

.instant-answer strong {
  display: block;
  text-transform: uppercase;
  font-family: var(--font-display);
  font-size: 24px;
  line-height: 1.1;
  letter-spacing: 0;
}

.instant-answer p {
  margin-bottom: 0;
  color: var(--on-primary-mute);
  line-height: 1.55;
}

.match-meter {
  display: grid;
  grid-template-columns: auto minmax(72px, 1fr) auto;
  align-items: center;
  gap: 10px;
  padding-top: 4px;
  color: var(--on-primary-mute);
  text-transform: uppercase;
  font-size: 11px;
}

.meter-track {
  position: relative;
  height: 6px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.14);
  overflow: hidden;
}

.meter-track i {
  display: block;
  width: 18%;
  height: 100%;
  border-radius: inherit;
  background: var(--accent-blue);
  transition:
    width 260ms ease,
    background-color 260ms ease;
}

.diagnostic-console.is-matched .meter-track i {
  background: var(--accent-green);
}

.diagnostic-console.is-fallback .meter-track i {
  background: var(--accent-amber);
}

.mission-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  width: 100%;
  border-top: 1px solid var(--hairline-on-dark);
  border-bottom: 1px solid var(--hairline-on-dark);
  background: var(--canvas-night);
}

.mission-strip > div {
  padding: 28px 32px;
  border-right: 1px solid var(--hairline-on-dark);
}

.mission-strip > div:last-child {
  border-right: 0;
}

.metric-value,
.metric-label {
  display: block;
  text-transform: uppercase;
}

.metric-value {
  margin-bottom: 8px;
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0;
}

.metric-label {
  color: var(--on-primary-mute);
  font-size: 12px;
  letter-spacing: 0;
}

.diagnose-section,
.index-band,
.symptom-section,
.answer-section,
.cost-section,
.local-repair-section,
.source-section {
  padding: 72px 56px;
  background: var(--canvas-night);
}

.section-heading {
  max-width: 1180px;
  margin: 0 auto 32px;
}

.section-heading h2 {
  margin-bottom: 0;
  font-size: 60px;
  line-height: 1.2;
  letter-spacing: 0;
}

.result-shell {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
  min-width: 0;
  gap: 1px;
  max-width: 1180px;
  margin: 0 auto;
  border: 1px solid var(--hairline-on-dark);
  background: var(--hairline-on-dark);
}

.symptom-grid,
.source-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  width: 100%;
  gap: 1px;
  max-width: 1180px;
  margin: 0 auto;
  border: 1px solid var(--hairline-on-dark);
  background: var(--hairline-on-dark);
}

.symptom-grid button,
.source-grid a {
  display: grid;
  align-content: start;
  min-width: 0;
  min-height: 190px;
  border: 0;
  border-radius: 0;
  background: var(--canvas-night-soft);
  color: var(--on-primary);
  padding: 26px;
  text-align: left;
  text-decoration: none;
}

.symptom-grid button:hover,
.symptom-grid button:focus-visible,
.source-grid a:hover,
.source-grid a:focus-visible {
  background: #171b22;
  outline: 1px solid var(--accent-blue);
  outline-offset: -1px;
}

.symptom-grid span,
.source-grid span {
  margin-bottom: 18px;
  color: var(--accent-blue);
  text-transform: uppercase;
  font-size: 12px;
}

.symptom-grid strong,
.source-grid strong {
  margin-bottom: 12px;
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: 28px;
  line-height: 1.08;
}

.symptom-grid small,
.source-grid small {
  color: var(--on-primary-mute);
  font-size: 14px;
  line-height: 1.55;
}

.result-primary,
.result-details {
  background: var(--canvas-night-soft);
}

.result-primary {
  position: relative;
  padding: 32px;
  overflow: hidden;
}

.result-primary::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-blue), var(--accent-green), var(--accent-amber));
  transform: scaleX(0.38);
  transform-origin: left center;
  transition: transform 260ms ease;
}

.result-shell.is-matched .result-primary::after {
  transform: scaleX(0.92);
}

.result-shell.is-fallback .result-primary::after {
  transform: scaleX(0.62);
}

.result-primary h3 {
  margin-bottom: 16px;
  font-size: 48px;
  line-height: 1.08;
  letter-spacing: 0;
}

#resultSummary {
  max-width: 520px;
  color: var(--on-primary-mute);
  line-height: 1.7;
}

.verdict-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin: 28px 0;
  border: 1px solid var(--hairline-on-dark);
  background: var(--hairline-on-dark);
}

.verdict-row > div {
  min-height: 92px;
  background: var(--canvas-night);
  padding: 18px;
}

.verdict-label {
  display: block;
  margin-bottom: 12px;
  color: var(--on-primary-mute);
  text-transform: uppercase;
  letter-spacing: 0;
  font-size: 12px;
}

.verdict-row strong {
  display: block;
  text-transform: uppercase;
  font-family: var(--font-display);
  font-size: 22px;
  line-height: 1.1;
  letter-spacing: 0;
}

.control-row {
  margin-top: 22px;
}

.control-row label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 0;
  font-size: 12px;
}

.control-row output {
  color: var(--on-primary-mute);
}

input[type="range"] {
  width: 100%;
  accent-color: var(--canvas-light);
}

.result-details {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.result-details section {
  padding: 28px;
  border-right: 1px solid var(--hairline-on-dark);
}

.result-details section:last-child {
  border-right: 0;
}

.result-details h4,
.cost-panel h3 {
  margin-bottom: 18px;
  text-transform: uppercase;
  font-family: var(--font-display);
  font-size: 22px;
  line-height: 1.2;
  letter-spacing: 0;
}

.result-details ul {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.result-details li {
  position: relative;
  padding-left: 18px;
  color: var(--on-primary-mute);
}

.result-details li::before {
  content: "";
  position: absolute;
  top: 10px;
  left: 0;
  width: 6px;
  height: 6px;
  border: 1px solid var(--on-primary);
  border-radius: 50%;
}

.code-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  width: 100%;
  gap: 1px;
  max-width: 1180px;
  margin: 0 auto;
  border: 1px solid var(--hairline-on-dark);
  background: var(--hairline-on-dark);
}

.code-card {
  display: block;
  min-width: 0;
  min-height: 164px;
  border: 0;
  border-radius: 0;
  background: var(--canvas-night-soft);
  padding: 24px;
  text-align: left;
  text-decoration: none;
}

.code-grid span,
.code-grid strong,
.code-grid small {
  display: block;
}

.code-grid span {
  margin-bottom: 18px;
  color: var(--on-primary-mute);
  text-transform: uppercase;
  letter-spacing: 0;
  font-size: 12px;
}

.code-grid strong {
  margin-bottom: 12px;
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: 28px;
  line-height: 1.05;
  letter-spacing: 0;
}

.code-grid small {
  color: var(--on-primary-mute);
  font-size: 13px;
  line-height: 1.5;
  letter-spacing: 0;
}

.answer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  width: 100%;
  gap: 1px;
  max-width: 1180px;
  margin: 0 auto;
  border: 1px solid var(--hairline-on-dark);
  background: var(--hairline-on-dark);
}

.answer-panel {
  min-width: 0;
  min-height: 250px;
  background: var(--canvas-night-soft);
  padding: 28px;
}

.answer-panel h3 {
  margin-bottom: 18px;
  font-size: 28px;
  line-height: 1.1;
  letter-spacing: 0;
}

.answer-panel p {
  margin-bottom: 0;
  color: var(--on-primary-mute);
  line-height: 1.7;
}

.cost-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  width: 100%;
  gap: 1px;
  max-width: 1180px;
  margin: 0 auto;
  border: 1px solid var(--hairline-on-dark);
  background: var(--hairline-on-dark);
}

.cost-panel {
  min-width: 0;
  min-height: 220px;
  background: var(--canvas-night-soft);
  padding: 28px;
}

.cost-panel p {
  margin-bottom: 0;
  color: var(--on-primary-mute);
  line-height: 1.7;
}

.safety-band {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(320px, 0.7fr);
  gap: 48px;
  align-items: end;
  min-height: 60vh;
  padding: 96px 56px;
  background: var(--canvas-night-soft);
  border-top: 1px solid var(--hairline-on-dark);
}

.safety-band h2 {
  max-width: 780px;
  margin-bottom: 0;
  font-size: 60px;
  line-height: 1.05;
  letter-spacing: 0;
}

.safety-band p:last-child {
  margin-bottom: 0;
  color: var(--on-primary-mute);
  line-height: 1.7;
}

.footer-dark {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px;
  border-top: 1px solid var(--hairline-on-dark);
  background: var(--canvas-night);
  padding: 32px 24px;
  color: var(--on-primary);
  font-size: 13px;
  line-height: 1.5;
  letter-spacing: 0;
}

.footer-dark span {
  text-transform: uppercase;
  letter-spacing: 0;
}

.guide-page {
  background: var(--canvas-night);
}

.article-hero {
  min-height: 72vh;
  display: grid;
  align-items: end;
  padding: 136px 56px 56px;
  background: var(--canvas-night) url("assets/diagnostic-hero.png") center / cover no-repeat;
}

.article-hero-inner {
  max-width: 980px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
  color: var(--on-primary-mute);
  text-transform: uppercase;
  letter-spacing: 0;
  font-size: 12px;
}

.breadcrumb a {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.article-layout,
.related-guides {
  padding: 72px 56px;
}

.article-ad-band {
  padding: 28px 56px;
  background: var(--canvas-night);
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(320px, 1.2fr);
  gap: 1px;
  max-width: 1180px;
  margin: 0 auto;
  border: 1px solid var(--hairline-on-dark);
  background: var(--hairline-on-dark);
}

.answer-box,
.article-panel,
.related-panel {
  background: var(--canvas-night-soft);
  padding: 32px;
}

.answer-box h2,
.article-panel h2,
.related-panel h2 {
  margin-bottom: 18px;
  font-size: 36px;
  line-height: 1.12;
  letter-spacing: 0;
}

.answer-box p,
.article-panel p,
.related-panel p {
  color: var(--on-primary-mute);
  line-height: 1.7;
}

.article-stack {
  display: grid;
  gap: 1px;
  background: var(--hairline-on-dark);
}

.article-panel ul,
.article-panel ol {
  display: grid;
  gap: 12px;
  margin: 0;
  padding-left: 20px;
  color: var(--on-primary-mute);
  line-height: 1.7;
}

.source-list a {
  color: var(--on-primary);
  text-decoration: underline;
  text-underline-offset: 5px;
}

.source-list a:hover,
.source-list a:focus-visible {
  color: var(--canvas-cool);
}

.compact-source-list li {
  overflow-wrap: anywhere;
}

.article-facts {
  display: grid;
  gap: 1px;
  margin-top: 28px;
  border: 1px solid var(--hairline-on-dark);
  background: var(--hairline-on-dark);
}

.article-facts div {
  background: var(--canvas-night);
  padding: 18px;
}

.article-facts span,
.article-facts strong {
  display: block;
}

.article-facts span {
  margin-bottom: 8px;
  color: var(--on-primary-mute);
  text-transform: uppercase;
  letter-spacing: 0;
  font-size: 12px;
}

.article-facts strong {
  text-transform: uppercase;
  font-family: var(--font-display);
  font-size: 22px;
  letter-spacing: 0;
}

.related-guides {
  max-width: 1292px;
  margin: 0 auto;
}

.related-panel {
  border: 1px solid var(--hairline-on-dark);
}

.related-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.related-links a {
  border: 1px solid var(--hairline-on-dark);
  border-radius: 32px;
  padding: 12px 14px;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0;
  font-size: 12px;
}

.related-links a:hover,
.related-links a:focus-visible {
  border-color: var(--on-primary);
}

@keyframes grid-drift {
  from {
    background-position: 0 0, 0 0;
  }

  to {
    background-position: 92px 92px, 92px 92px;
  }
}

@keyframes stream-slide {
  from {
    transform: translateX(0);
  }

  to {
    transform: translateX(-48%);
  }
}

@keyframes console-scan {
  0%,
  100% {
    transform: translateX(-72%);
  }

  50% {
    transform: translateX(72%);
  }
}

@keyframes signal-pulse {
  0%,
  100% {
    opacity: 0.28;
    transform: scaleX(0.55);
  }

  50% {
    opacity: 1;
    transform: scaleX(1);
  }
}

@media (max-width: 1100px) {
  .hero-band {
    grid-template-columns: 1fr;
    align-items: end;
    padding: 124px 32px 40px;
  }

  .diagnostic-console {
    order: -1;
  }

  h1 {
    font-size: 60px;
    line-height: 1.02;
  }

  .diagnostic-console {
    max-width: 680px;
  }

  .mission-strip,
  .symptom-grid,
  .answer-grid,
  .cost-grid,
  .source-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .result-shell {
    grid-template-columns: 1fr;
  }

  .local-repair-panel {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 820px) {
  .site-nav {
    padding: 18px 20px;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .nav-links {
    position: fixed;
    top: 72px;
    right: 20px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    width: min(280px, calc(100vw - 40px));
    border: 1px solid var(--hairline-on-dark);
    background: rgba(0, 0, 0, 0.98);
    box-shadow: 0 24px 64px rgba(0, 0, 0, 0.48);
    padding: 18px;
  }

  .nav-links.open {
    display: flex;
  }

  .hero-band {
    min-height: auto;
    padding: 108px 20px 32px;
    background-position: 58% center;
  }

  .fault-stream {
    max-width: none;
  }

  .hero-ad-slot {
    max-width: none;
  }

  .stream-track {
    width: auto;
    flex-wrap: wrap;
    animation: none;
  }

  h1 {
    font-size: 48px;
    line-height: 1.03;
  }

  .section-heading h2,
  .safety-band h2 {
    font-size: 48px;
    line-height: 1.08;
  }

  .diagnose-section,
  .index-band,
  .symptom-section,
  .answer-section,
  .cost-section,
  .local-repair-section,
  .source-section,
  .safety-band,
  .ad-band,
  .article-ad-band {
    padding: 56px 20px;
  }

  .result-details,
  .code-grid,
  .symptom-grid,
  .answer-grid,
  .mission-strip,
  .cost-grid,
  .source-grid,
  .safety-band {
    grid-template-columns: 1fr;
  }

  .result-details section,
  .mission-strip > div {
    border-right: 0;
    border-bottom: 1px solid var(--hairline-on-dark);
  }

  .result-details section:last-child,
  .mission-strip > div:last-child {
    border-bottom: 0;
  }
}

@media (max-width: 600px) {
  .brand-name {
    display: none;
  }

  .site-nav {
    padding: 14px 20px;
  }

  html {
    scroll-padding-top: 78px;
  }

  section[id] {
    scroll-margin-top: 78px;
  }

  .hero-band {
    gap: 24px;
    padding-top: 90px;
  }

  .hero-proof span,
  .stream-track span,
  .quick-signals button {
    overflow-wrap: anywhere;
  }

  .ad-slot {
    min-height: 90px;
    padding: 16px;
  }

  .ad-slot strong {
    font-size: 16px;
  }

  .hero-copy {
    padding-bottom: 0;
  }

  .eyebrow {
    margin-bottom: 8px;
    line-height: 1.5;
  }

  h1 {
    margin-bottom: 18px;
    font-size: 36px;
  }

  .hero-lead {
    margin-bottom: 20px;
    line-height: 1.55;
  }

  .hero-copy > .ghost-button {
    min-height: 44px;
    padding: 14px 20px;
  }

  .diagnostic-console {
    max-width: 100%;
    padding: 18px;
  }

  .console-topline,
  .search-row,
  .repair-search-row,
  .model-row,
  .console-steps,
  .diagnostic-rail,
  .verdict-row {
    grid-template-columns: 1fr;
  }

  .console-topline {
    display: grid;
    gap: 12px;
    margin-bottom: 14px;
  }

  .compact {
    width: 100%;
  }

  .search-row input {
    min-height: 48px;
  }

  .quick-signals {
    margin-top: 12px;
  }

  .instant-answer {
    margin-top: 14px;
    padding: 14px;
  }

  .instant-answer strong {
    font-size: 20px;
  }

  .match-meter {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .result-primary,
  .result-details section,
  .cost-panel,
  .local-repair-copy,
  .repair-search-card,
  .symptom-grid button,
  .source-grid a {
    padding: 22px;
  }

  .result-primary h3,
  .console-topline h2,
  .local-repair-copy h2 {
    font-size: 28px;
  }

  .article-hero,
  .article-layout,
  .article-ad-band,
  .related-guides {
    padding-left: 20px;
    padding-right: 20px;
  }

  .article-layout {
    grid-template-columns: 1fr;
  }

  .answer-box,
  .article-panel,
  .related-panel {
    padding: 22px;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}