@import url("design-tokens.css");

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

html {
  min-width: 20rem;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + var(--space-4));
  text-size-adjust: 100%;
}

body {
  min-width: 20rem;
  margin: 0;
  background: var(--color-canvas);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--type-body);
  font-weight: var(--font-weight-regular);
  line-height: var(--leading-body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

main {
  background: var(--color-surface);
}

:is(button, input, select, textarea, summary) {
  color: inherit;
  font: inherit;
}

:is(button, summary, [role="button"]) {
  -webkit-tap-highlight-color: transparent;
}

a {
  color: inherit;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.2em;
}

:is(img, svg, video) {
  max-width: 100%;
}

:is(h1, h2, h3, h4) {
  color: var(--color-text);
  font-family: var(--font-display);
  font-stretch: condensed;
  text-wrap: balance;
}

:is(p, li, dd) {
  text-wrap: pretty;
}

::selection {
  background: var(--color-brand);
  color: var(--color-text-inverse);
}

:is(a, button, input, select, textarea, summary, [tabindex]):focus-visible {
  outline: 0.1875rem solid var(--color-focus) !important;
  outline-offset: 0.1875rem !important;
}

:is(button, input, select, textarea):disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: var(--space-2);
  left: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: var(--color-text);
  color: var(--color-text-inverse);
  transform: translateY(-150%);
}

.skip-link:focus {
  transform: none;
}

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

/* Shared editorial grid */
:is(
  .intro,
  .process,
  .physics,
  .quiz,
  .circuits,
  .home-hero,
  .home-paths,
  .home-questions,
  .home-project,
  .basics-heading,
  .basics,
  .learning-hub,
  .journey-nav,
  .view-masthead,
  .diagnostic-lab,
  .guide-hero,
  .guide-workspace,
  .editorial
) {
  width: 100%;
  max-width: var(--layout-max);
  margin-inline: auto;
  padding-inline: var(--page-pad);
}

:is(.reading-width, .lesson-copy, .editorial-copy) {
  width: min(100%, var(--reading-max));
  max-width: var(--reading-max);
  margin-inline: auto;
}

:is(.intro, .view-masthead, .article-hero, .guide-hero) {
  position: relative;
  isolation: isolate;
  overflow: hidden;
}

:is(.intro, .view-masthead, .article-hero, .guide-hero)::after {
  position: absolute;
  z-index: 0;
  display: block;
  right: clamp(-12rem, -5vw, -2rem);
  bottom: -24%;
  width: min(58vw, 48rem);
  aspect-ratio: 1.5;
  background: url("assets/project-naked.png") center / contain no-repeat;
  content: "";
  filter: grayscale(1);
  opacity: 0.055;
  pointer-events: none;
}

:is(.intro, .view-masthead, .article-hero, .guide-hero) > * {
  position: relative;
  z-index: 1;
}

/* Type roles */
:is(.intro h1, .guide-hero h1, .article-hero h1, .view-masthead h1) {
  max-width: 13ch;
  margin-block: 0;
  font-size: var(--type-display);
  font-weight: var(--font-weight-black);
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-tight);
}

:is(
  .section-title h2,
  .learning-hub h2,
  .learning-phase-head h2,
  .editorial-head h2,
  .editorial-copy h2,
  .section-copy h2,
  .lesson-copy h2,
  .project-story h2,
  .guide-body h2,
  .lesson h2
) {
  font-size: var(--type-h2);
  font-weight: var(--font-weight-black);
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-heading);
}

:is(h3, .detail h3, .stroke-copy h3, .principles h3) {
  font-weight: var(--font-weight-black);
  letter-spacing: -0.035em;
  line-height: 1.05;
}

:is(.lead, .guide-lead, .home-hero .lead, .basics-heading > p, .article-hero .lead) {
  max-width: 42rem;
  color: var(--color-text-soft);
  font-size: var(--type-lead);
  line-height: 1.48;
}

:is(.eyebrow, .section-index, .detail-kicker, .guide-kicker, .mini-label) {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-brand);
  font-size: var(--type-meta);
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
}

:is(.eyebrow, .section-index, .detail-kicker, .guide-kicker, .mini-label)::before {
  width: 1.25rem;
  height: 0.125rem;
  background: currentColor;
  content: "";
}

/* Primary navigation */
:is(.topbar, .guide-topbar) {
  position: sticky;
  z-index: var(--z-header);
  top: 0;
  display: flex;
  min-height: var(--header-height);
  height: auto;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  padding: var(--space-2) var(--page-pad);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-overlay);
  box-shadow: 0 0.25rem 1rem rgba(20, 28, 32, 0.035);
  backdrop-filter: blur(0.75rem);
}

:is(.brand, .guide-brand) {
  display: inline-flex;
  min-width: 0;
  align-items: center;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: var(--font-weight-black);
  letter-spacing: -0.035em;
  line-height: 0.9;
  text-decoration: none;
  text-transform: uppercase;
}

:is(.brand, .guide-brand) > span:last-child {
  display: block !important;
  max-width: 7.5rem;
}

:is(.brand, .guide-brand) b,
:is(.site-footer, .guide-footer) b {
  color: inherit;
}

:is(.brand-mark, .guide-brand i) {
  display: none;
}

.primary-navigation {
  position: relative;
  z-index: var(--z-menu);
  flex: 0 0 auto;
  margin-left: auto;
}

.primary-navigation > summary {
  display: none;
  min-height: var(--touch-target);
  align-items: center;
  justify-content: center;
  padding: 0 var(--space-4);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
  font-size: var(--type-label);
  font-weight: var(--font-weight-bold);
  list-style: none;
  user-select: none;
}

.primary-navigation > summary::-webkit-details-marker {
  display: none;
}

:is(.main-nav, .guide-nav) {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: var(--space-1);
  border: 0;
  background: transparent;
}

:is(.main-nav, .guide-nav) a {
  position: relative;
  display: inline-flex !important;
  min-height: var(--touch-target);
  align-items: center;
  padding: 0 var(--space-3);
  border: 0;
  border-radius: 0;
  color: var(--color-text-soft);
  font-size: 0.76rem;
  font-weight: var(--font-weight-medium);
  letter-spacing: -0.01em;
  text-decoration: none;
  text-transform: none;
  transition: color var(--motion-fast) var(--motion-ease), background-color var(--motion-fast) var(--motion-ease);
}

:is(.main-nav, .guide-nav) a:hover {
  background: var(--color-surface-hover);
  color: var(--color-text);
}

:is(.main-nav, .guide-nav) a[aria-current="page"] {
  background: transparent;
  color: var(--color-text);
  box-shadow: inset 0 -0.16rem 0 var(--color-brand);
}

/* Common controls */
:is(.button, .button-primary, .button-secondary, .button-ghost, .procedure-copy button, .bench-start button) {
  display: inline-flex;
  min-height: var(--touch-target);
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0 var(--space-5);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: var(--type-label);
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
  text-decoration: none;
  transition: transform var(--motion-fast) var(--motion-ease), background-color var(--motion-fast) var(--motion-ease), border-color var(--motion-fast) var(--motion-ease);
}

:is(.button, .button-primary, .procedure-copy button:not(.procedure-reset), .bench-start button) {
  border-color: var(--color-brand);
  background: var(--color-brand);
  color: var(--color-text-inverse);
}

.button-secondary,
.procedure-copy .procedure-reset {
  border-color: var(--color-border-strong);
  background: var(--color-surface);
  color: var(--color-text);
}

.button-ghost {
  border-color: var(--color-border);
  background: transparent;
  color: var(--color-text-soft);
}

:is(.button, .button-primary, .button-secondary, .button-ghost, .procedure-copy button, .bench-start button):not(:disabled):hover {
  transform: translateY(-0.125rem);
}

/* Shared panels, tabs and states */
:is(
  .panel,
  .surface-panel,
  .workbench,
  .lab-shell,
  .circuit-lab,
  .diagnostic-shell,
  .control-explorer-layout,
  .start-game,
  .dog-demo,
  .cause-widget,
  .procedure,
  .bench-shell,
  .comparison,
  .guide-callout,
  .reading-sources a
) {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-panel);
}

:is(.chip, .guide-meta span, .guide-meta a) {
  display: inline-flex;
  min-height: 2rem;
  align-items: center;
  padding: 0 var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-surface);
  color: var(--color-text-muted);
  font-size: var(--type-meta);
  font-weight: var(--font-weight-medium);
}

:is(.mode-tabs, .toggle, .engine-mode, .view-switch, .cause-toggle, .explorer-areas, .basics-route) {
  border-color: var(--color-border);
  background: var(--color-surface-raised);
}

:is(.mode-tabs, .toggle, .engine-mode, .view-switch, .cause-toggle, .explorer-areas) button {
  border-color: var(--color-border) !important;
  background: transparent !important;
  color: var(--color-text-muted) !important;
}

:is(.mode-tabs, .toggle, .engine-mode, .view-switch, .cause-toggle, .explorer-areas) button:is(.active, [aria-pressed="true"], [aria-selected="true"]) {
  background: var(--color-brand) !important;
  color: var(--color-text-inverse) !important;
}

:is(.drivetrain, .sequence) button {
  border-color: var(--color-border) !important;
  background: var(--color-surface) !important;
  color: var(--color-text-soft) !important;
}

:is(.drivetrain, .sequence) button:is(.active, [aria-pressed="true"], [aria-selected="true"]) {
  border-color: var(--color-brand) !important;
  background: var(--color-brand) !important;
  color: var(--color-text-inverse) !important;
}

:is(.flow-explanation, .control-detail, .lesson-copy, .dog-copy, .procedure-copy, .cause-result) {
  color: var(--color-text-soft);
}

:is(.term, .term-heading, .text-link, .breadcrumb a, .sources a, .reading-sources a span) {
  color: var(--color-brand) !important;
}

/* Global light treatment for legacy dark section styles */
:is(
  .explorer,
  .bike-stage,
  .detail,
  .home-routes,
  .seo-guides,
  .project-note,
  .learning-step,
  .learning-phase,
  .control-stage,
  .lesson-stage,
  .lesson-copy,
  .guide-hero,
  .guide-workspace,
  .article-hero,
  .lesson,
  .flow-explanation,
  .connection,
  .cause-dogs,
  .procedure-visual,
  .powertrain,
  .bench-console,
  .bench-start,
  .bench-control,
  .comparison > div,
  .conclusion,
  .cold-note,
  .do-not-force,
  .term-definition
) {
  border-color: var(--color-border) !important;
  background-color: var(--color-surface) !important;
  color: var(--color-text) !important;
}

:is(
  .detail > p,
  .section-copy p,
  .learning-phase-head span,
  .learning-step-copy p,
  .learning-topics small,
  .control-detail dd,
  .scene-note,
  .lesson p,
  .guide-body p,
  .guide-body li,
  .article-hero .lead,
  .dog-copy p,
  .cause-result p,
  .procedure-copy p,
  .bench-start p,
  .sources,
  .site-footer,
  .guide-footer
) {
  color: var(--color-text-muted) !important;
}

:is(.home-routes, .seo-guides, .project-note, .learning-hub, .basics, .lesson, .guide-workspace, .editorial) {
  padding-block: var(--section-space);
}

/* Route cards become compact technical tiles. */
.visual-paths {
  gap: var(--space-4) !important;
}

.visual-paths > a,
.seo-guides > div > a,
.learning-topics a,
.reading-sources a {
  overflow: hidden;
  border: 1px solid var(--color-border) !important;
  border-radius: var(--radius-md) !important;
  background: var(--color-surface) !important;
  color: var(--color-text) !important;
  box-shadow: none !important;
  transition: border-color var(--motion-fast) var(--motion-ease), transform var(--motion-fast) var(--motion-ease), box-shadow var(--motion-fast) var(--motion-ease);
}

:is(.visual-paths > a, .seo-guides > div > a, .learning-topics a, .reading-sources a):hover {
  border-color: var(--color-brand) !important;
  box-shadow: var(--shadow-panel) !important;
  transform: translateY(-0.125rem);
}

.visual-paths img {
  filter: saturate(0.72) contrast(1.04);
}

:is(.visual-paths p, .lesson-copy p, .guide-hero p, .learning-step p, .seo-guides p) {
  color: var(--color-text-muted) !important;
}

:is(.visual-paths h3 span, .seo-guides a span, .learning-topics a > b) {
  color: var(--color-brand) !important;
}

/* Hero and article rhythm */
.intro.home-hero {
  min-height: clamp(25rem, 62vh, 40rem);
  padding-top: clamp(4.5rem, 8vw, 7rem);
  padding-bottom: clamp(12rem, 23vw, 18rem);
}

.intro.home-hero::after {
  right: clamp(-7rem, -2vw, 0rem);
  bottom: -4%;
  width: min(72vw, 62rem);
  opacity: 0.88;
}

.intro.home-hero h1 {
  max-width: 8.5ch;
}

.intro.home-hero .lead {
  max-width: 29rem;
  margin-top: var(--space-6);
}

:is(.view-masthead, .article-hero, .guide-hero) {
  min-height: 20rem;
  padding-top: clamp(3.5rem, 7vw, 6rem);
  padding-bottom: clamp(3.5rem, 7vw, 6rem);
  border-bottom: 1px solid var(--color-border);
}

.article-hero {
  width: min(calc(100% - 2 * var(--page-pad)), var(--reading-max));
}

.breadcrumb {
  padding-top: var(--space-5);
  color: var(--color-text-muted) !important;
}

.breadcrumb li + li::before {
  color: var(--color-border-strong) !important;
}

/* Interactive learning markers */
:is(.hotspot, .control-point, .game-hotspot) {
  border-color: var(--color-brand) !important;
  background: var(--color-surface) !important;
  color: var(--color-text) !important;
  box-shadow: 0 0 0 0.3rem rgba(226, 31, 47, 0.12) !important;
}

:is(.hotspot, .control-point, .game-hotspot):is(:hover, :focus-visible, .active, [aria-pressed="true"]) {
  background: var(--color-brand) !important;
  color: var(--color-text-inverse) !important;
}

:is(.fact span, .cause-result strong, .bench-label output, .mission-state.success, .bench-start p.success) {
  color: var(--color-brand) !important;
}

:is(.mission-state, .cold-note, .do-not-force, .term-definition) {
  border-left: 0.2rem solid var(--color-brand) !important;
  background: var(--color-brand-soft) !important;
}

:is(.site-footer, .guide-footer) {
  border-top: 1px solid var(--color-border) !important;
  background: var(--color-surface-raised) !important;
}

:is(.site-footer, .guide-footer) a {
  min-height: var(--touch-target);
  align-items: center;
}

/* Responsive recomposition */
@media (max-width: 60rem) {
  :is(.main-nav, .guide-nav) a {
    padding-inline: var(--space-2);
  }

  .intro.home-hero::after {
    right: -14%;
    width: min(82vw, 50rem);
  }
}

@media (max-width: 45rem) {
  :is(.topbar, .guide-topbar) {
    min-height: var(--header-height);
    flex-wrap: nowrap;
    gap: var(--space-3);
    padding-block: var(--space-2);
  }

  :is(.brand, .guide-brand) > span:last-child {
    display: block !important;
    max-width: 6.8rem;
  }

  .primary-navigation > summary {
    display: inline-flex;
  }

  .primary-navigation:not([open]) > nav {
    display: none !important;
  }

  .primary-navigation[open] > nav {
    position: absolute;
    z-index: var(--z-menu);
    top: calc(100% + var(--space-2));
    right: 0;
    display: flex !important;
    width: min(18rem, calc(100vw - 2 * var(--page-pad)));
    max-height: min(70vh, 30rem);
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-1);
    overflow: auto;
    padding: var(--space-2);
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-md);
    background: var(--color-surface);
    box-shadow: var(--shadow-menu);
    overscroll-behavior: contain;
  }

  .primary-navigation[open] > nav a {
    display: flex !important;
    min-height: 3rem;
    flex: 0 0 auto;
    justify-content: flex-start;
    padding: var(--space-3) var(--space-4);
    white-space: normal;
  }

  :is(.main-nav, .guide-nav) a[aria-current="page"] {
    background: var(--color-brand-soft);
    box-shadow: inset 0.1875rem 0 0 var(--color-brand);
  }

  .intro.home-hero {
    min-height: auto;
    align-items: flex-start;
    justify-content: flex-start;
    padding-top: clamp(3rem, 10vh, 4.5rem);
    padding-bottom: var(--space-8);
    text-align: left;
  }

  .intro.home-hero::after {
    position: relative;
    right: auto;
    bottom: auto;
    flex: 0 0 auto;
    width: calc(100% + 2 * var(--page-pad));
    max-width: none;
    margin: var(--space-6) calc(-1 * var(--page-pad)) 0;
    background-position: center top;
    opacity: 0.88;
  }

  .intro.home-hero .lead {
    margin: var(--space-5) 0 0;
  }

  :is(.view-masthead, .article-hero, .guide-hero) {
    min-height: 17rem;
  }

  :is(.view-masthead, .article-hero, .guide-hero)::after {
    right: -38%;
    width: 100vw;
    opacity: 0.04;
  }

  :is(.site-footer, .guide-footer) {
    padding-inline: var(--page-pad);
  }
}

/* Keep supporting copy readable on the light editorial surfaces. */
.question-links a,
.seo-guides-method a,
.project-copy p {
  color: var(--color-text-soft) !important;
}

.site-footer .footer-links a,
.guide-footer a {
  color: var(--color-text-muted) !important;
}

@media (max-width: 23.75rem) {
  :is(.brand, .guide-brand) > span:last-child {
    max-width: 5.7rem;
    font-size: 0.7rem;
  }
}

/* Desktop wordmark: more visible without increasing the header height. */
@media (min-width: 45.0625rem) {
  :is(.brand, .guide-brand) {
    font-size: 1rem;
    line-height: 0.86;
  }

  :is(.brand, .guide-brand) > span:last-child {
    max-width: 9.5rem;
  }
}

/* Contrast repair: legacy dark-theme rules now living on light editorial surfaces. */
:is(
  .learning-step,
  .learning-phase,
  .journey-nav,
  .mechanics-index,
  .diagnostic-lab,
  .lesson-section,
  .editorial,
  .guide-hero,
  .guide-workspace,
  .legal-main
) :is(p, li, dd, small) {
  color: var(--color-text-muted);
}

:is(
  .learning-step,
  .learning-phase,
  .journey-nav,
  .mechanics-index,
  .diagnostic-lab,
  .lesson-section,
  .editorial,
  .guide-hero,
  .guide-workspace,
  .legal-main
) :is(h1, h2, h3, h4, strong, dt) {
  color: var(--color-text);
}

.lesson-copy > :is(p, ul, ol),
.editorial-copy p,
.process-list p,
.tool-page .guide-meta,
body:has([data-diagnostic]) .guide-meta,
.diagnostic-stop-reminder,
.legal-lead,
.legal-main section p,
.legal-updated,
.dynamic-story .principles p:not(.detail-kicker),
.section-title > p:not(.section-index) {
  color: var(--color-text-muted) !important;
}

.lesson-copy strong,
.learning-topics strong,
.journey-nav b,
.mechanics-index > :is(a, button) b,
.symptom-list > :is(a, button) b {
  color: var(--color-text) !important;
}

.learning-step-number,
.learning-topics small,
.journey-nav small,
.mechanics-index > :is(a, button) small,
.symptom-list > :is(a, button) small {
  color: var(--color-text-muted) !important;
}

.learning-topics a,
.journey-nav a,
.mechanics-index > :is(a, button),
.symptom-list > :is(a, button) {
  color: var(--color-text) !important;
}

.view-masthead > div > a,
.legal-back {
  color: var(--color-text-muted) !important;
}

.view-masthead > div > a:is(:hover, :focus-visible),
.legal-back:is(:hover, :focus-visible) {
  color: var(--color-brand-deep) !important;
}

.mechanics-index > :is(a, button) i,
.symptom-list span,
.section-route-link,
.source-list a {
  color: var(--color-brand-deep) !important;
}

.mechanics-index > :is(a, button):is(:hover, :focus-visible, [aria-pressed="true"]) {
  background: var(--color-brand-soft);
}

.mechanics-index > :is(a, button):is(:hover, :focus-visible, [aria-pressed="true"]) b {
  color: var(--color-brand-deep) !important;
}

.source-list a:is(:hover, :focus-visible) {
  background: var(--color-brand-soft);
  color: var(--color-brand-deep) !important;
}

.journey-nav a:is(:hover, :focus-visible),
.symptom-list > :is(a, button):is(:hover, :focus-visible, [aria-expanded="true"]) {
  background: var(--color-brand-soft);
  color: var(--color-text) !important;
}

.journey-nav a:is(:hover, :focus-visible) b,
.symptom-list > :is(a, button):is(:hover, :focus-visible, [aria-expanded="true"]) b {
  color: var(--color-brand-deep) !important;
}

/* Reusable cards are light; technical canvases remain deliberately inverse. */
:is(.compare-grid article, .trust-grid article, .link-grid a) {
  border-color: var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
}

:is(.compare-grid, .trust-grid, .link-grid) :is(h3, p) {
  color: var(--color-text);
}

:is(.compare-grid, .trust-grid, .link-grid) p {
  color: var(--color-text-muted);
}

:is(.compare-grid article, .trust-grid article, .link-grid a):is(:hover, :focus-visible) {
  background: var(--color-brand-soft);
}

:is(
  .bike-stage,
  .control-stage,
  .lesson-stage,
  .procedure-visual,
  .powertrain,
  .bench-console,
  .lab-visual,
  .dynamic-visual,
  .diagnostic-path,
  .diagnostic-sources,
  .knowledge-scenario,
  .engine-anatomy,
  .stroke-lab,
  .circuit-lab,
  .chapter-visual,
  .steer-diagram > div,
  .grip-budget,
  .home-route-grid > a,
  .protection-grid article,
  .thanks-card
) {
  border-color: var(--color-border-inverse) !important;
  background-color: var(--color-surface-inverse) !important;
  color: var(--color-text-inverse) !important;
}

:is(
  .bike-stage,
  .control-stage,
  .lesson-stage,
  .procedure-visual,
  .powertrain,
  .bench-console,
  .lab-visual,
  .dynamic-visual,
  .diagnostic-path,
  .diagnostic-sources,
  .knowledge-scenario,
  .engine-anatomy,
  .stroke-lab,
  .circuit-lab,
  .chapter-visual,
  .steer-diagram > div,
  .grip-budget,
  .home-route-grid > a,
  .protection-grid article,
  .thanks-card
) :is(h2, h3, h4, strong, b) {
  color: var(--color-text-inverse) !important;
}

:is(
  .bike-stage,
  .control-stage,
  .lesson-stage,
  .procedure-visual,
  .powertrain,
  .bench-console,
  .lab-visual,
  .dynamic-visual,
  .diagnostic-path,
  .diagnostic-sources,
  .knowledge-scenario,
  .engine-anatomy,
  .stroke-lab,
  .circuit-lab,
  .chapter-visual,
  .steer-diagram > div,
  .grip-budget,
  .home-route-grid > a,
  .protection-grid article,
  .thanks-card
) :is(p, small) {
  color: var(--color-text-inverse-muted) !important;
}

.lab-panel :is(.control-row > span, .control-row label) {
  color: var(--color-text-soft);
}

.lab-status {
  border-color: var(--color-border-inverse);
  background: var(--color-surface-inverse);
  color: var(--color-text-inverse);
}

.lab-status :is(h3, strong) {
  color: var(--color-text-inverse) !important;
}

.lab-status p {
  color: var(--color-text-inverse-muted) !important;
}

.diagnostic-trail {
  border-color: var(--color-border-inverse);
  background: var(--color-surface-inverse);
  color: var(--color-text-inverse);
}

.diagnostic-trail li {
  border-color: var(--color-border-inverse);
  color: var(--color-text-inverse-muted);
}

.diagnostic-trail li.current {
  color: var(--color-text-inverse);
}

.diagnostic-trail :is(span, li.done) {
  color: var(--color-brand-inverse);
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

/* Home · first compositional application of Interactive Technical Learning */
.home-redesign {
  background: var(--color-surface);
}

.home-technical-hero,
.home-primary-routes,
.home-explore,
.home-tools {
  width: min(100%, var(--layout-max));
  margin-inline: auto;
}

.home-technical-hero {
  display: grid;
  min-height: min(38rem, calc(100svh - var(--header-height)));
  grid-template-columns: minmax(19rem, 0.78fr) minmax(31rem, 1.22fr);
  align-items: center;
  gap: clamp(1rem, 2.5vw, 2.75rem);
  padding: clamp(3.5rem, 6vw, 6.5rem) var(--page-pad) clamp(2.75rem, 5vw, 5rem);
}

.home-hero-copy {
  position: relative;
  z-index: 2;
  max-width: 33rem;
}

.home-kicker,
.home-section-label {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin: 0 0 var(--space-5);
  color: var(--color-brand);
  font-size: var(--type-meta);
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
}

.home-kicker::before,
.home-section-label::before {
  width: 1.5rem;
  height: 0.125rem;
  background: currentColor;
  content: "";
}

.home-technical-hero h1 {
  max-width: 10.5ch;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(3.65rem, 5.8vw, 6.15rem);
  font-weight: var(--font-weight-black);
  letter-spacing: -0.068em;
  line-height: 0.88;
}

.home-hero-lead {
  max-width: 31rem;
  margin: var(--space-6) 0 0;
  color: var(--color-text-soft);
  font-size: var(--type-lead);
  line-height: 1.5;
}

.home-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-8);
}

.home-cta {
  display: inline-flex;
  min-height: var(--touch-target);
  align-items: center;
  justify-content: center;
  padding: 0.78rem 1rem;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  font-size: var(--type-label);
  font-weight: var(--font-weight-bold);
  transition: border-color var(--motion-fast) var(--motion-ease), background var(--motion-fast) var(--motion-ease), color var(--motion-fast) var(--motion-ease), transform var(--motion-fast) var(--motion-ease);
}

.home-cta-primary {
  border-color: var(--color-brand);
  background: var(--color-brand);
  color: var(--color-text-inverse);
}

.home-cta-secondary {
  background: var(--color-surface);
  color: var(--color-text);
}

.home-cta:is(:hover, :focus-visible) {
  border-color: var(--color-brand-strong);
  transform: translateY(-0.125rem);
}

.home-cta-primary:is(:hover, :focus-visible) {
  background: var(--color-brand-strong);
}

.home-machine {
  position: relative;
  min-width: 0;
  min-height: clamp(31rem, 43vw, 38rem);
  margin: 0;
}

.home-machine > img {
  position: absolute;
  inset: 0;
  width: 108%;
  height: 100%;
  max-width: none;
  object-fit: contain;
  object-position: center;
  transform: translateX(-4%);
}

.home-machine-note {
  position: absolute;
  z-index: 2;
  display: flex;
  min-height: 3.25rem;
  flex-direction: column;
  justify-content: center;
  padding: 0.5rem 0.7rem 0.5rem 0.8rem;
  border-left: 0.15rem solid var(--color-brand);
  background: rgba(255, 255, 255, 0.93);
  color: var(--color-text);
  box-shadow: 0 0.4rem 1rem rgba(20, 28, 32, 0.04);
  transition: border-color var(--motion-fast) var(--motion-ease), transform var(--motion-fast) var(--motion-ease);
}

.home-machine-note strong {
  font-size: 0.82rem;
  line-height: 1.1;
}

.home-machine-note span {
  margin-top: 0.2rem;
  color: var(--color-text-muted);
  font-size: 0.65rem;
  line-height: 1.25;
}

.home-machine-note:is(:hover, :focus-visible) {
  border-color: var(--color-brand-strong);
  transform: translateY(-0.125rem);
}

.note-electronics {
  top: 9%;
  left: 5%;
}

.note-frame {
  top: 14%;
  right: 0;
}

.note-engine {
  bottom: 8%;
  left: 8%;
}

.note-transmission {
  right: 2%;
  bottom: 10%;
}

.home-primary-routes {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  padding-inline: var(--page-pad);
}

.home-primary-routes > a {
  display: grid;
  min-height: 9.5rem;
  grid-template-columns: 2.5rem minmax(0, 1fr) auto;
  align-items: start;
  gap: var(--space-4);
  padding: var(--space-6);
  border-block: 1px solid var(--color-border);
  border-right: 1px solid var(--color-border);
  color: var(--color-text);
  transition: background var(--motion-fast) var(--motion-ease), box-shadow var(--motion-fast) var(--motion-ease);
}

.home-primary-routes > a:first-child {
  border-left: 1px solid var(--color-border);
}

.home-primary-routes > a:is(:hover, :focus-visible) {
  background: var(--color-surface-raised);
  box-shadow: inset 0 0.2rem 0 var(--color-brand);
}

.home-route-number {
  color: var(--color-brand);
  font-family: var(--font-mono);
  font-size: var(--type-meta);
  font-weight: var(--font-weight-bold);
}

.home-route-copy {
  display: flex;
  min-width: 0;
  flex-direction: column;
}

.home-route-copy strong {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2vw, 1.8rem);
  font-weight: var(--font-weight-black);
  letter-spacing: -0.04em;
  line-height: 1;
}

.home-route-copy small {
  max-width: 19rem;
  margin-top: var(--space-3);
  color: var(--color-text-muted);
  font-size: 0.78rem;
  line-height: 1.45;
}

.home-route-action {
  align-self: end;
  color: var(--color-text-soft);
  font-size: var(--type-meta);
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
}

.home-explore,
.home-tools {
  padding: var(--section-space) var(--page-pad);
}

.home-section-head {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(17rem, 0.55fr);
  align-items: end;
  gap: var(--content-gap);
  margin-bottom: clamp(2rem, 4vw, 3.5rem);
}

.home-section-head h2 {
  max-width: 13ch;
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--type-h2);
  font-weight: var(--font-weight-black);
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-heading);
}

.home-section-head > p {
  max-width: 28rem;
  margin: 0;
  color: var(--color-text-muted);
  line-height: 1.55;
}

.home-explore-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--space-3);
}

.home-explore-card {
  position: relative;
  display: grid;
  min-width: 0;
  min-height: 23rem;
  grid-template-rows: minmax(11rem, 1fr) auto;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text);
  transition: border-color var(--motion-fast) var(--motion-ease), box-shadow var(--motion-fast) var(--motion-ease), transform var(--motion-fast) var(--motion-ease);
}

.home-explore-card:is(:hover, :focus-visible) {
  border-color: var(--color-brand);
  box-shadow: var(--shadow-panel);
  transform: translateY(-0.2rem);
}

.home-explore-card > img {
  width: 100%;
  height: 100%;
  min-height: 0;
  object-fit: cover;
  background: var(--color-surface-raised);
}

.explore-basics {
  grid-column: span 5;
}

.explore-mechanics {
  grid-column: span 4;
}

.explore-dynamics {
  grid-column: span 3;
}

.explore-dynamics > img {
  object-fit: contain;
  padding: var(--space-4);
}

.home-explore-wide {
  min-height: 14rem;
  grid-template-columns: minmax(13rem, 0.9fr) minmax(0, 1.1fr);
  grid-template-rows: 1fr;
}

.explore-diagnostics {
  grid-column: span 7;
}

.explore-knowledge {
  grid-column: span 5;
}

.home-explore-copy {
  display: flex;
  min-width: 0;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--space-5);
}

.home-explore-copy small,
.home-tool-feature-copy small {
  color: var(--color-brand);
  font-family: var(--font-mono);
  font-size: var(--type-meta);
  font-style: normal;
  font-weight: var(--font-weight-bold);
  letter-spacing: 0.04em;
}

.home-explore-copy strong,
.home-tool-feature-copy strong {
  margin-top: var(--space-3);
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.1vw, 2rem);
  font-weight: var(--font-weight-black);
  letter-spacing: -0.04em;
  line-height: 1;
}

.home-explore-copy em,
.home-tool-feature-copy em {
  margin-top: var(--space-3);
  color: var(--color-text-muted);
  font-size: 0.82rem;
  font-style: normal;
  line-height: 1.45;
}

.home-tools {
  border-top: 1px solid var(--color-border);
}

.home-tools-workspace {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(17rem, 0.65fr);
  gap: var(--space-3);
}

.home-tool-feature {
  display: grid;
  min-height: 26rem;
  grid-template-columns: minmax(0, 1.2fr) minmax(15rem, 0.8fr);
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text);
  transition: border-color var(--motion-fast) var(--motion-ease), box-shadow var(--motion-fast) var(--motion-ease);
}

.home-tool-feature:is(:hover, :focus-visible) {
  border-color: var(--color-brand);
  box-shadow: var(--shadow-panel);
}

.home-tool-image {
  min-width: 0;
  overflow: hidden;
  background: var(--color-surface-inverse);
}

.home-tool-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.home-tool-feature-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(1.5rem, 3vw, 2.5rem);
}

.home-tool-feature-copy b {
  margin-top: var(--space-8);
  color: var(--color-brand);
  font-size: var(--type-label);
}

.home-tool-list {
  display: grid;
  border-top: 1px solid var(--color-border);
}

.home-tool-list a {
  display: grid;
  min-height: 8rem;
  grid-template-columns: 2.25rem 1fr;
  align-content: center;
  gap: 0.3rem var(--space-4);
  padding: var(--space-5);
  border: 1px solid var(--color-border);
  border-top: 0;
  background: var(--color-surface);
  color: var(--color-text);
  transition: border-color var(--motion-fast) var(--motion-ease), background var(--motion-fast) var(--motion-ease);
}

.home-tool-list a:is(:hover, :focus-visible) {
  border-color: var(--color-brand);
  background: var(--color-brand-soft);
}

.home-tool-list span {
  grid-row: 1 / span 2;
  color: var(--color-brand);
  font-family: var(--font-mono);
  font-size: var(--type-meta);
  font-weight: var(--font-weight-bold);
}

.home-tool-list strong {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: var(--font-weight-black);
  letter-spacing: -0.035em;
  line-height: 1;
}

.home-tool-list small {
  color: var(--color-text-muted);
  font-size: 0.75rem;
}

@media (max-width: 64rem) {
  .home-technical-hero {
    grid-template-columns: minmax(18rem, 0.9fr) minmax(25rem, 1.1fr);
  }

  .home-machine {
    min-height: 31rem;
  }

  .home-explore-card {
    grid-column: span 6;
  }

  .explore-dynamics {
    grid-column: span 5;
  }

  .explore-diagnostics {
    grid-column: span 7;
  }

  .explore-knowledge {
    grid-column: span 12;
  }

  .home-tools-workspace,
  .home-tool-feature {
    grid-template-columns: 1fr;
  }

  .home-tool-feature {
    min-height: 0;
  }

  .home-tool-image {
    aspect-ratio: 16 / 7;
  }

  .home-tool-list {
    grid-template-columns: repeat(3, 1fr);
  }

  .home-tool-list a {
    min-height: 9rem;
  }
}

@media (max-width: 45rem) {
  .home-technical-hero {
    min-height: auto;
    grid-template-columns: 1fr;
    gap: var(--space-8);
    padding-top: clamp(2.75rem, 10vw, 4rem);
    padding-bottom: var(--space-8);
  }

  .home-hero-copy {
    max-width: 100%;
  }

  .home-technical-hero h1 {
    max-width: 10.5ch;
    font-size: clamp(3.1rem, 14vw, 4.4rem);
    line-height: 0.88;
  }

  .home-hero-lead {
    max-width: 31rem;
    margin-top: var(--space-5);
  }

  .home-hero-actions {
    margin-top: var(--space-6);
  }

  .home-cta {
    flex: 1 1 10rem;
  }

  .home-machine {
    display: grid;
    min-height: 0;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-2);
  }

  .home-machine > img {
    position: static;
    grid-column: 1 / -1;
    width: calc(100% + 2 * var(--page-pad));
    height: auto;
    margin-inline: calc(-1 * var(--page-pad));
    transform: none;
  }

  .home-machine-note {
    position: static;
    min-height: var(--touch-target);
    padding-block: var(--space-2);
    box-shadow: none;
  }

  .home-machine-note span {
    display: none;
  }

  .home-primary-routes {
    grid-template-columns: 1fr;
  }

  .home-primary-routes > a {
    min-height: 7.5rem;
    grid-template-columns: 2rem minmax(0, 1fr) auto;
    padding: var(--space-5) var(--space-4);
    border-top: 0;
    border-left: 1px solid var(--color-border);
  }

  .home-primary-routes > a:first-child {
    border-top: 1px solid var(--color-border);
  }

  .home-route-copy small {
    font-size: 0.75rem;
  }

  .home-explore,
  .home-tools {
    padding-block: var(--section-space);
  }

  .home-section-head {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .home-section-head > p {
    max-width: 35rem;
  }

  .home-explore-grid {
    grid-auto-columns: min(82vw, 21rem);
    grid-auto-flow: column;
    grid-template-columns: none;
    gap: var(--space-3);
    overflow-x: auto;
    padding: 0 var(--page-pad) var(--space-4);
    margin-inline: calc(-1 * var(--page-pad));
    scroll-padding-inline: var(--page-pad);
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
  }

  .home-explore-grid::-webkit-scrollbar {
    display: none;
  }

  .home-explore-card,
  .home-explore-wide {
    min-height: 22rem;
    grid-column: auto;
    grid-template-columns: 1fr;
    grid-template-rows: minmax(11rem, 1fr) auto;
    scroll-snap-align: start;
  }

  .home-tools-workspace,
  .home-tool-feature,
  .home-tool-list {
    grid-template-columns: 1fr;
  }

  .home-tool-image {
    aspect-ratio: 16 / 8;
  }

  .home-tool-list a {
    min-height: 6.5rem;
  }
}

@media (max-width: 23.75rem) {
  .home-technical-hero h1 {
    font-size: clamp(2.75rem, 13.5vw, 3.35rem);
  }

  .home-route-action {
    display: none;
  }

  .home-primary-routes > a {
    grid-template-columns: 1.75rem minmax(0, 1fr);
  }
}

/* Home · reference 01 compositional pass */
.home-redesign {
  --home-inline: clamp(1.25rem, 3.4vw, 3rem);
  background: #fff;
}

.home-redesign .home-technical-hero {
  position: relative;
  min-height: 25.5rem;
  grid-template-columns: minmax(17rem, 0.78fr) minmax(30rem, 1.22fr);
  gap: clamp(0.5rem, 2vw, 2rem);
  padding: clamp(1.75rem, 3vw, 2.8rem) var(--home-inline) 1rem;
}

.home-redesign .home-hero-copy {
  align-self: center;
  max-width: 29rem;
  padding-bottom: 1rem;
}

.home-redesign .home-kicker {
  margin-bottom: 1rem;
}

.home-redesign .home-technical-hero h1 {
  max-width: 9.4ch;
  font-size: clamp(3.25rem, 4.5vw, 4.35rem);
  letter-spacing: -0.064em;
  line-height: 0.89;
}

.home-redesign .home-hero-lead {
  max-width: 26rem;
  margin-top: 1.15rem;
  font-size: clamp(1rem, 1.35vw, 1.12rem);
  line-height: 1.42;
}

.home-redesign .home-hero-actions {
  gap: 0.65rem;
  margin-top: 1.5rem;
}

.home-redesign .home-cta {
  min-height: 2.75rem;
  border-radius: 0.28rem;
  padding-inline: 1rem;
}

.home-redesign .home-cta-primary::after {
  margin-left: 0.65rem;
  content: "→";
}

.home-redesign .home-machine {
  min-height: 22.75rem;
  align-self: stretch;
}

.home-machine-canvas {
  position: absolute;
  inset: 0;
}

.home-redesign .home-machine-canvas::before {
  position: absolute;
  inset: 12% 4% 10%;
  border: 1px solid #eef0f2;
  content: "";
}

.home-redesign .home-machine-axis {
  position: absolute;
  z-index: 1;
  right: 5%;
  bottom: 13%;
  left: 5%;
  border-top: 1px dashed #d8dde1;
}

.home-redesign .home-machine-axis::before,
.home-redesign .home-machine-axis::after {
  position: absolute;
  top: -0.23rem;
  width: 0.42rem;
  height: 0.42rem;
  border: 1px solid #c7cdd2;
  border-radius: 50%;
  background: #fff;
  content: "";
}

.home-redesign .home-machine-axis::before { left: 6%; }
.home-redesign .home-machine-axis::after { right: 6%; }

.home-redesign .home-machine > .home-machine-canvas > img {
  position: absolute;
  z-index: 1;
  inset: 1.3rem -2.2rem 0.35rem -1rem;
  width: calc(100% + 3.2rem);
  height: calc(100% - 1.65rem);
  max-width: none;
  object-fit: contain;
  object-position: center;
}

.home-redesign .home-machine figcaption {
  position: absolute;
  z-index: 3;
  right: 6%;
  bottom: 0;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.02em;
}

.home-redesign .home-machine-note {
  min-height: auto;
  padding: 0.35rem 0.5rem;
  border-left-width: 0.12rem;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: none;
}

.home-redesign .home-machine-note::before {
  position: absolute;
  top: 50%;
  width: var(--note-line, 4rem);
  border-top: 1px solid var(--color-brand);
  content: "";
}

.home-redesign .home-machine-note::after {
  position: absolute;
  top: calc(50% - 0.23rem);
  width: 0.46rem;
  height: 0.46rem;
  border: 0.12rem solid #fff;
  border-radius: 50%;
  background: var(--color-brand);
  box-shadow: 0 0 0 1px var(--color-brand);
  content: "";
}

.home-redesign .note-electronics,
.home-redesign .note-engine {
  --note-line: 4.7rem;
}

.home-redesign .note-electronics::before,
.home-redesign .note-engine::before { left: 100%; }
.home-redesign .note-electronics::after,
.home-redesign .note-engine::after { left: calc(100% + var(--note-line) - 0.2rem); }

.home-redesign .note-frame,
.home-redesign .note-transmission {
  --note-line: 4.2rem;
}

.home-redesign .note-frame::before,
.home-redesign .note-transmission::before { right: 100%; }
.home-redesign .note-frame::after,
.home-redesign .note-transmission::after { right: calc(100% + var(--note-line) - 0.2rem); }

.home-redesign .note-electronics { top: 9%; left: 2%; }
.home-redesign .note-frame { top: 13%; right: 0; }
.home-redesign .note-engine { bottom: 11%; left: 4%; }
.home-redesign .note-transmission { right: 1%; bottom: 13%; }

.home-redesign .home-primary-routes {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  padding: 0 var(--home-inline) 1.75rem;
}

.home-redesign .home-primary-routes > a {
  position: relative;
  min-height: 7.2rem;
  grid-template-columns: 1.5rem 2rem minmax(0, 1fr) 1.2rem;
  gap: 0.75rem;
  padding: 1.15rem 1.1rem 1.05rem;
  border-block-color: #dfe3e6;
  border-right-color: #dfe3e6;
}

.home-redesign .home-primary-routes > a:first-child {
  border-left-color: #dfe3e6;
}

.home-route-icon {
  width: 1.75rem;
  height: 1.75rem;
  align-self: center;
  fill: none;
  stroke: var(--color-brand);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.6;
}

.home-redesign .home-route-number {
  padding-top: 0.18rem;
}

.home-redesign .home-route-copy {
  align-self: center;
}

.home-redesign .home-route-copy strong {
  font-size: clamp(1.28rem, 1.7vw, 1.6rem);
}

.home-redesign .home-route-copy small {
  margin-top: 0.42rem;
  font-size: 0.72rem;
  line-height: 1.38;
}

.home-redesign .home-route-action {
  align-self: center;
  font-size: 1rem;
}

.home-redesign .home-explore {
  max-width: none;
  padding: 2.65rem max(var(--home-inline), calc((100vw - var(--layout-max)) / 2 + var(--home-inline))) 3.75rem;
  border-top: 1px solid #e1e5e8;
  background: #f7f8f9;
}

.home-redesign .home-section-head {
  width: min(100%, calc(var(--layout-max) - 2 * var(--home-inline)));
  grid-template-columns: minmax(0, 1fr) minmax(18rem, 0.55fr);
  margin: 0 auto 1.55rem;
}

.home-redesign .home-section-label {
  margin-bottom: 0.65rem;
}

.home-redesign .home-section-head h2 {
  font-size: clamp(2rem, 3vw, 2.8rem);
  line-height: 0.95;
}

.home-redesign .home-section-head > p {
  font-size: 0.92rem;
}

.home-redesign .home-explore-grid {
  width: min(100%, calc(var(--layout-max) - 2 * var(--home-inline)));
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.7rem;
  margin-inline: auto;
}

.home-redesign .home-explore-card,
.home-redesign .home-explore-wide {
  min-height: 0;
  grid-column: auto;
  grid-template-columns: 1fr;
  grid-template-rows: auto 1fr;
  border: 0;
  border-radius: 0;
  background: transparent;
  overflow: visible;
}

.home-redesign .home-explore-card:is(:hover, :focus-visible) {
  border-color: transparent;
  box-shadow: none;
  transform: translateY(-0.18rem);
}

.home-redesign .home-explore-card > img {
  width: 100%;
  aspect-ratio: 1.42 / 1;
  height: auto;
  border: 1px solid #d8dde1;
  border-radius: 0.35rem;
  background: #fff;
  object-fit: cover;
}

.home-redesign .explore-dynamics > img {
  padding: 0.5rem;
  object-fit: contain;
}

.home-redesign .home-explore-copy {
  position: relative;
  justify-content: flex-start;
  padding: 0.85rem 0.2rem 0;
}

.home-redesign .home-explore-copy small {
  position: absolute;
  top: 0.87rem;
  right: 0.2rem;
  font-size: 0.65rem;
}

.home-redesign .home-explore-copy strong {
  margin-top: 0;
  padding-right: 1.5rem;
  font-size: clamp(1.08rem, 1.55vw, 1.35rem);
}

.home-redesign .home-explore-copy em {
  margin-top: 0.42rem;
  padding-right: 0.5rem;
  font-size: 0.72rem;
  line-height: 1.35;
}

@media (max-width: 64rem) {
  .home-redesign .home-technical-hero {
    grid-template-columns: minmax(17rem, 0.86fr) minmax(25rem, 1.14fr);
  }

  .home-redesign .home-primary-routes > a {
    grid-template-columns: 1.25rem 1.75rem minmax(0, 1fr);
  }

  .home-redesign .home-route-action {
    display: none;
  }

  .home-redesign .home-explore-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 45rem) {
  .home-redesign {
    --home-inline: 1rem;
  }

  .home-redesign .home-technical-hero {
    display: grid;
    min-height: auto;
    grid-template-columns: 1fr;
    gap: 0.7rem;
    padding: 2rem var(--home-inline) 0.9rem;
  }

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

  .home-redesign .home-kicker {
    margin-bottom: 0.72rem;
    font-size: 0.64rem;
  }

  .home-redesign .home-technical-hero h1 {
    max-width: 9.7ch;
    font-size: clamp(2.75rem, 13.3vw, 3.65rem);
    line-height: 0.9;
  }

  .home-redesign .home-hero-lead {
    max-width: 24rem;
    margin-top: 0.85rem;
    font-size: 0.96rem;
    line-height: 1.42;
  }

  .home-redesign .home-hero-actions {
    margin-top: 1.1rem;
  }

  .home-redesign .home-cta-primary {
    flex: 1 1 auto;
  }

  .home-redesign .home-cta-secondary {
    display: none;
  }

  .home-redesign .home-machine {
    display: block;
    min-height: 17.2rem;
    margin-inline: calc(-1 * var(--home-inline));
  }

  .home-redesign .home-machine-canvas {
    inset: 0;
  }

  .home-redesign .home-machine-canvas::before {
    inset: 13% 0.7rem 11%;
    border-inline: 0;
  }

  .home-redesign .home-machine > .home-machine-canvas > img {
    inset: 0.4rem -1rem 0;
    width: calc(100% + 2rem);
    height: calc(100% - 0.4rem);
  }

  .home-redesign .home-machine-axis {
    right: 0.9rem;
    bottom: 12%;
    left: 0.9rem;
  }

  .home-redesign .home-machine-note {
    position: absolute;
    z-index: 3;
    min-height: 2.35rem;
    padding: 0.3rem 0.42rem;
    background: rgba(255, 255, 255, 0.93);
  }

  .home-redesign .home-machine-note strong {
    font-size: 0.69rem;
  }

  .home-redesign .home-machine-note span,
  .home-redesign .home-machine figcaption {
    display: none;
  }

  .home-redesign .home-machine-note::before {
    --note-line: 1.35rem;
  }

  .home-redesign .note-electronics { top: 9%; left: 0.65rem; }
  .home-redesign .note-frame { top: 11%; right: 0.65rem; }
  .home-redesign .note-engine { bottom: 10%; left: 0.75rem; }
  .home-redesign .note-transmission { right: 0.55rem; bottom: 11%; }

  .home-redesign .home-primary-routes {
    grid-template-columns: 1fr;
    padding: 0 var(--home-inline) 2rem;
  }

  .home-redesign .home-primary-routes > a {
    min-height: 6.7rem;
    grid-template-columns: 1.4rem 1.85rem minmax(0, 1fr) 1rem;
    gap: 0.72rem;
    padding: 0.9rem;
    border-top: 0;
    border-left: 1px solid #dfe3e6;
  }

  .home-redesign .home-primary-routes > a:first-child {
    border-top: 1px solid #dfe3e6;
  }

  .home-redesign .home-route-action {
    display: block;
  }

  .home-redesign .home-route-copy small {
    max-width: 18rem;
    font-size: 0.69rem;
  }

  .home-redesign .home-explore {
    padding: 2.45rem var(--home-inline) 3rem;
  }

  .home-redesign .home-section-head {
    width: 100%;
    grid-template-columns: 1fr;
    gap: 0.65rem;
    margin-bottom: 1.35rem;
  }

  .home-redesign .home-section-head h2 {
    font-size: 2.15rem;
  }

  .home-redesign .home-section-head > p {
    font-size: 0.86rem;
  }

  .home-redesign .home-explore-grid {
    width: 100%;
    display: grid;
    grid-auto-flow: row;
    grid-template-columns: 1fr;
    gap: 0;
    margin: 0;
    padding: 0;
    overflow: visible;
  }

  .home-redesign .home-explore-card,
  .home-redesign .home-explore-wide {
    min-height: 7.2rem;
    grid-template-columns: 7.7rem minmax(0, 1fr);
    grid-template-rows: 1fr;
    gap: 0.85rem;
    padding: 0.7rem 0;
    border-bottom: 1px solid #dfe3e6;
  }

  .home-redesign .home-explore-card:first-child {
    border-top: 1px solid #dfe3e6;
  }

  .home-redesign .home-explore-card > img {
    width: 7.7rem;
    height: 5.65rem;
    aspect-ratio: auto;
  }

  .home-redesign .home-explore-copy {
    align-self: center;
    padding: 0 1.5rem 0 0;
  }

  .home-redesign .home-explore-copy small {
    top: 0.15rem;
    right: 0;
  }

  .home-redesign .home-explore-copy strong {
    font-size: 1.28rem;
  }

  .home-redesign .home-explore-copy em {
    font-size: 0.72rem;
  }
}

@media (max-width: 23.75rem) {
  .home-redesign .home-technical-hero h1 {
    font-size: clamp(2.55rem, 12.8vw, 3.1rem);
  }

  .home-redesign .home-machine {
    min-height: 15.7rem;
  }

  .home-redesign .home-primary-routes > a {
    grid-template-columns: 1.25rem 1.65rem minmax(0, 1fr);
  }

  .home-redesign .home-route-action {
    display: none;
  }
}