/* Colors are the app's tokens (docs/03-ux-spec.md §10.1), Light and Dark modes. */
:root {
  color-scheme: light dark;
  --color-bg-canvas: #FFFFFF;
  --color-bg-surface: #FFFFFF;
  --color-bg-surface-raised: #F4F6FA;
  --color-border-subtle: #DDE2EA;
  --color-border-input: #6B7A90;
  --color-text-primary: #0B1220;
  --color-text-secondary: #4A5568;
  --color-text-link: #1A5FD6;
  --color-accent-primary: #1A5FD6;
  --color-accent-on-primary: #FFFFFF;
  --color-accent-subtle: #E7EFFC;
  --color-guidance-bg: #10213D;
  --color-guidance-text: #FFFFFF;
  --color-guidance-text-secondary: #C9D4E6;
  --color-glow-bloom: #4FC3FF;
  --color-status-error: #B91C1C;
  --color-status-success: #15803D;
  --color-status-warning-bg: #FEF3C7;
  --color-status-warning-text: #78350F;
  --color-mode-beta-bg: #B45309;
  --color-focus-ring: #1A5FD6;

  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --radius: 14px;
  --radius-control: 10px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg-canvas: #0B0F17;
    --color-bg-surface: #141B27;
    --color-bg-surface-raised: #1B2433;
    --color-border-subtle: #2A3445;
    --color-border-input: #6E7D96;
    --color-text-primary: #F2F5FA;
    --color-text-secondary: #B8C2D3;
    --color-text-link: #7FB0FF;
    --color-accent-primary: #2F6FE0;
    --color-accent-subtle: #1B2A47;
    --color-status-error: #F87171;
    --color-status-success: #4ADE80;
    --color-status-warning-bg: #3A2A06;
    --color-status-warning-text: #FCD58A;
    --color-focus-ring: #7FB0FF;
  }
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--color-bg-canvas);
  color: var(--color-text-primary);
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.55;
}

h1,
h2,
h3 {
  line-height: 1.2;
  margin: 0 0 0.5em;
}

p,
ul {
  margin: 0 0 1em;
}

a {
  color: var(--color-text-link);
  text-underline-offset: 0.15em;
}

:focus-visible {
  outline: 3px solid var(--color-focus-ring);
  outline-offset: 2px;
}

[hidden] {
  display: none !important;
}

.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 16px;
}

.wrap.narrow {
  max-width: 680px;
}

@media (min-width: 600px) {
  .wrap {
    padding: 0 24px;
  }
}

.skip-link {
  position: absolute;
  left: 8px;
  top: -100px;
  z-index: 10;
  padding: 8px 14px;
  border-radius: var(--radius-control);
  background: var(--color-bg-surface);
  color: var(--color-text-primary);
}

.skip-link:focus {
  top: 8px;
}

main:focus {
  outline: none;
}

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

/* Placeholders the founder fills in before publishing (npm run check lists them). */
mark.fill {
  padding: 0 4px;
  border-radius: 4px;
  outline: 1px dashed var(--color-mode-beta-bg);
  background: var(--color-status-warning-bg);
  color: var(--color-status-warning-text);
}

/* Header: sticky, with the menu */
.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: var(--color-guidance-bg);
  color: var(--color-guidance-text);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.06);
}

html {
  scroll-behavior: smooth;
}

[id] {
  scroll-margin-top: 76px;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 60px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: inherit;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.0625rem;
}

.brand-mark {
  width: 30px;
  height: 30px;
  flex: none;
}

.badge-beta {
  flex: none;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--color-mode-beta-bg);
  color: #FFFFFF;
  font-size: 0.8125rem;
  font-weight: 700;
}

/* Hero */
.hero {
  background:
    radial-gradient(120% 80% at 85% 10%, rgba(79, 195, 255, 0.16), transparent 60%),
    var(--color-guidance-bg);
  color: var(--color-guidance-text);
  padding: 36px 0 44px;
}

.hero-inner {
  display: grid;
  gap: 32px;
  align-items: center;
}

@media (min-width: 880px) {
  .hero {
    padding: 64px 0 72px;
  }

  .hero-inner {
    grid-template-columns: 1.08fr 0.92fr;
    gap: 48px;
  }
}

.eyebrow {
  margin-bottom: 12px;
  color: var(--color-glow-bloom);
  font-size: 0.9375rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.hero h1 {
  font-size: clamp(1.875rem, 1.25rem + 2.6vw, 2.75rem);
  font-weight: 750;
  letter-spacing: -0.01em;
}

.lead {
  color: var(--color-guidance-text-secondary);
  font-size: 1.125rem;
  max-width: 40em;
}

.hero-art {
  margin: 0;
}

.art {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
}

.hero-art figcaption {
  margin-top: 8px;
  color: var(--color-guidance-text-secondary);
  font-size: 0.8125rem;
  text-align: right;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 16px;
  margin-top: 24px;
}

.cta-note {
  color: var(--color-guidance-text-secondary);
  font-size: 0.9375rem;
}

.cta-bottom {
  justify-content: center;
  margin: 8px 0 56px;
}

/* Cards */
.cards {
  display: grid;
  gap: 16px;
  margin: 32px 0;
}

@media (min-width: 720px) {
  .cards {
    grid-template-columns: repeat(2, 1fr);
    margin: 48px 0 40px;
  }
}

@media (min-width: 1000px) {
  .cards {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card {
  padding: 22px 22px 8px;
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius);
  background: var(--color-bg-surface-raised);
}

.card h2,
.card h3 {
  font-size: 1.1875rem;
}

.card ul {
  padding-left: 1.2em;
}

.card li {
  margin-bottom: 0.45em;
}

.card li::marker {
  color: var(--color-accent-primary);
}

/* Buttons */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border: 2px solid transparent;
  border-radius: var(--radius-control);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
}

.button:disabled {
  opacity: 0.6;
  cursor: progress;
}

.button-large {
  min-height: 54px;
  padding: 0 28px;
  font-size: 1.125rem;
}

.button-small {
  min-height: 40px;
  padding: 0 16px;
  font-size: 0.9375rem;
}

.button-primary {
  background: var(--color-accent-primary);
  color: var(--color-accent-on-primary);
}

.button-primary:hover:not(:disabled) {
  filter: brightness(1.08);
}

.button-on-dark {
  background: #FFFFFF;
  color: var(--color-guidance-bg);
}

.button-on-dark:hover {
  background: #E7EFFC;
}

.button-on-dark:focus-visible,
.button-ghost-dark:focus-visible {
  outline-color: var(--color-glow-bloom);
}

.button-ghost-dark {
  border-color: rgba(255, 255, 255, 0.45);
  background: transparent;
  color: #FFFFFF;
}

.button-ghost-dark:hover {
  background: rgba(255, 255, 255, 0.08);
}

.button-secondary {
  border-color: var(--color-border-input);
  background: transparent;
  color: var(--color-text-primary);
}

.button-secondary:hover {
  background: var(--color-bg-surface-raised);
}

.link-button {
  padding: 4px 0;
  border: 0;
  background: none;
  color: var(--color-text-link);
  font: inherit;
  text-decoration: underline;
  text-underline-offset: 0.15em;
  cursor: pointer;
}

/* Form: the application's views sit in a narrow column inside #apply */
.narrow-block {
  max-width: 680px;
  margin: 0 auto;
}

.form-head {
  margin-bottom: 24px;
}

.step-count {
  margin-bottom: 8px;
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  font-weight: 600;
}

progress {
  display: block;
  width: 100%;
  height: 8px;
  margin-bottom: 20px;
  border: 0;
  border-radius: 999px;
  background: var(--color-bg-surface-raised);
  overflow: hidden;
  appearance: none;
}

progress::-webkit-progress-bar {
  background: var(--color-bg-surface-raised);
}

progress::-webkit-progress-value {
  background: var(--color-accent-primary);
}

progress::-moz-progress-bar {
  background: var(--color-accent-primary);
}

#step-title {
  font-size: 1.625rem;
}

#step-title:focus {
  outline: none;
}

.q {
  margin: 0 0 30px;
  padding: 0;
  border: 0;
  min-width: 0;
}

.q-label {
  display: block;
  margin-bottom: 6px;
  padding: 0;
  font-size: 1.125rem;
  font-weight: 650;
  line-height: 1.35;
}

.hint {
  margin: 0 0 10px;
  color: var(--color-text-secondary);
  font-size: 0.9875rem;
}

.error {
  margin: 0 0 10px;
  color: var(--color-status-error);
  font-weight: 700;
}

.q.has-error {
  padding-left: 14px;
  border-left: 4px solid var(--color-status-error);
}

.options {
  display: grid;
  gap: 8px;
}

.options.compact {
  grid-template-columns: repeat(auto-fill, minmax(132px, 1fr));
}

.options.compact .option-text {
  white-space: nowrap;
}

.option {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 52px;
  padding: 10px 14px;
  border: 1.5px solid var(--color-border-input);
  border-radius: var(--radius-control);
  background: var(--color-bg-surface);
  cursor: pointer;
}

.option:hover {
  border-color: var(--color-accent-primary);
}

.option:has(input:checked) {
  border-color: var(--color-accent-primary);
  box-shadow: inset 0 0 0 1px var(--color-accent-primary);
  background: var(--color-accent-subtle);
}

.option:has(input:focus-visible) {
  outline: 3px solid var(--color-focus-ring);
  outline-offset: 2px;
}

.option input {
  flex: none;
  width: 22px;
  height: 22px;
  margin: 0;
  accent-color: var(--color-accent-primary);
}

.option input:focus-visible {
  outline: none;
}

.option-text {
  min-width: 0;
}

.option-check {
  align-items: flex-start;
}

.option-check input {
  margin-top: 2px;
}

/* 1 to 7 scale */
.scale {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
}

.scale .option {
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  min-height: 72px;
  padding: 8px 2px;
  text-align: center;
  font-weight: 700;
}

.scale-ends {
  display: flex;
  justify-content: space-between;
  margin-top: 6px;
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}

/* One small group per spot */
.spot {
  margin: 0 0 14px;
  padding: 0;
  border: 0;
  min-width: 0;
}

.spot legend {
  margin-bottom: 6px;
  padding: 0;
  font-weight: 600;
}

.spot .options {
  grid-template-columns: 1fr;
}

@media (min-width: 520px) {
  .spot .options {
    grid-template-columns: repeat(3, 1fr);
  }
}

input[type="text"],
input[type="email"],
input[type="tel"],
textarea {
  display: block;
  width: 100%;
  min-height: 50px;
  padding: 10px 12px;
  border: 1.5px solid var(--color-border-input);
  border-radius: var(--radius-control);
  background: var(--color-bg-surface);
  color: var(--color-text-primary);
  font: inherit;
}

textarea {
  min-height: 120px;
  resize: vertical;
}

input.w-zip {
  max-width: 9rem;
}

.q.has-error input[type="text"],
.q.has-error input[type="email"],
.q.has-error input[type="tel"],
.q.has-error textarea {
  border-color: var(--color-status-error);
  border-width: 2px;
}

.trap {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-status {
  margin: 0 0 16px;
  font-weight: 600;
}

.form-status:empty {
  margin: 0;
}

.form-status.is-error {
  color: var(--color-status-error);
}

.form-nav {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding-top: 8px;
  border-top: 1px solid var(--color-border-subtle);
  padding-block-start: 20px;
}

.form-nav .button-primary {
  flex: 1 1 auto;
  max-width: 260px;
  margin-left: auto;
}

.error-summary {
  margin-bottom: 28px;
  padding: 16px 18px 4px;
  border: 3px solid var(--color-status-error);
  border-radius: var(--radius);
  background: var(--color-bg-surface);
}

.error-summary:focus {
  outline: 3px solid var(--color-focus-ring);
  outline-offset: 3px;
}

.error-summary h3 {
  font-size: 1.125rem;
}

.error-summary ul {
  padding-left: 1.1em;
}

.error-summary li {
  margin-bottom: 0.6em;
}

.summary-q {
  display: block;
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}

.error-summary a {
  color: var(--color-status-error);
  font-weight: 700;
}

/* End screens */
.end-card {
  padding: 28px 24px 12px;
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius);
  background: var(--color-bg-surface-raised);
}

.end-card h2 {
  font-size: 1.625rem;
}

.end-card h2:focus {
  outline: none;
}

.not-found {
  margin: 40px 0 64px;
}

.end-icon {
  display: block;
  width: 48px;
  height: 48px;
  margin-bottom: 14px;
}

.end-icon-success {
  color: var(--color-status-success);
}

.launch-form {
  margin: 20px 0;
}

.launch-fields {
  margin-top: 18px;
}

.back-link {
  margin-top: 8px;
}

/* Privacy notice and footer */
.privacy {
  padding: 36px 0 20px;
  border-top: 1px solid var(--color-border-subtle);
  background: var(--color-bg-surface-raised);
  font-size: 0.9875rem;
}

.privacy h2 {
  font-size: 1.1875rem;
}

.privacy-list {
  padding-left: 1.1em;
}

.privacy-list li {
  margin-bottom: 0.6em;
}

.site-footer {
  padding: 20px 0 32px;
  background: var(--color-bg-surface-raised);
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 28px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border-subtle);
}

.footer-inner p {
  margin: 0;
}

.footer-inner .footer-note {
  flex-basis: 100%;
  margin-top: 8px;
  font-size: 0.8125rem;
}

/* Privacy dialog */
.dialog {
  width: min(640px, calc(100% - 32px));
  max-height: calc(100% - 48px);
  padding: 0;
  border: 0;
  border-radius: var(--radius);
  background: var(--color-bg-surface);
  color: var(--color-text-primary);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}

.dialog::backdrop {
  background: rgba(0, 0, 0, 0.55);
}

.dialog-head {
  position: sticky;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-border-subtle);
  background: var(--color-bg-surface);
}

.dialog-head h2 {
  margin: 0;
  font-size: 1.1875rem;
}

.dialog-head form {
  margin: 0;
}

.dialog-body {
  padding: 16px 20px 8px;
  font-size: 0.9875rem;
}

.noscript {
  padding: 16px;
  background: var(--color-status-warning-bg);
  color: var(--color-status-warning-text);
  text-align: center;
}

@media (prefers-reduced-motion: no-preference) {
  .button,
  .option {
    transition: background-color 120ms ease, border-color 120ms ease, filter 120ms ease;
  }
}

/* ===== Showcase ===== */

/* Menu: inline on wide screens, a dropdown on phones */
.site-nav {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  min-height: 40px;
  padding: 0 14px;
  border: 1.5px solid rgba(255, 255, 255, 0.35);
  border-radius: var(--radius-control);
  background: transparent;
  color: inherit;
  font: inherit;
  font-weight: 650;
  cursor: pointer;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-menu a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 10px;
  border-radius: 8px;
  color: var(--color-guidance-text-secondary);
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
}

.nav-menu a:hover {
  color: #FFFFFF;
  background: rgba(255, 255, 255, 0.08);
}

.nav-menu .nav-cta a,
.nav-apply {
  margin-left: 6px;
  padding: 0 16px;
  background: #FFFFFF;
  color: var(--color-guidance-bg);
}

.nav-menu .nav-cta a:hover,
.nav-apply:hover {
  background: #E7EFFC;
  color: var(--color-guidance-bg);
}

.nav-apply {
  display: none;
  align-items: center;
  min-height: 40px;
  border-radius: 8px;
  font-size: 0.9375rem;
  font-weight: 700;
  text-decoration: none;
}

@media (max-width: 960px) {
  .nav-toggle,
  .nav-apply {
    display: inline-flex;
  }

  .nav-menu {
    position: absolute;
    top: 100%;
    right: 12px;
    left: 12px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 10px;
    border-radius: 14px;
    background: var(--color-guidance-bg);
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.4);
  }

  .site-nav.is-open .nav-menu {
    display: flex;
  }

  .nav-menu a {
    min-height: 48px;
    padding: 0 14px;
    font-size: 1rem;
  }

  .nav-menu .nav-cta a {
    display: flex;
    justify-content: center;
    margin: 6px 0 0;
  }
}

@media (max-width: 420px) {
  .brand-name {
    font-size: 0.9375rem;
  }

  .nav-apply {
    padding: 0 12px;
  }
}

/* Sections */
.section {
  padding: 56px 0;
}

.section-alt {
  background: var(--color-bg-surface-raised);
}

.section-dark {
  background:
    radial-gradient(90% 70% at 15% 0%, rgba(79, 195, 255, 0.12), transparent 60%),
    var(--color-guidance-bg);
  color: var(--color-guidance-text);
}

@media (min-width: 880px) {
  .section {
    padding: 88px 0;
  }
}

.section-head {
  max-width: 46rem;
  margin-bottom: 32px;
}

.section-head.center {
  margin-right: auto;
  margin-left: auto;
  text-align: center;
}

.section-head h2 {
  font-size: clamp(1.75rem, 1.2rem + 2vw, 2.5rem);
  font-weight: 750;
  letter-spacing: -0.01em;
}

.section-lead {
  color: var(--color-text-secondary);
  font-size: 1.125rem;
}

.section-dark .section-lead {
  color: var(--color-guidance-text-secondary);
}

.eyebrow-dark {
  color: var(--color-accent-primary);
}

/* Phone mockup around exported screens */
.phone {
  position: relative;
  width: min(100%, var(--phone-width, 300px));
  margin: 0 auto;
  padding: 9px;
  border-radius: 46px;
  background: #05080E;
  box-shadow:
    0 0 0 1.5px rgba(255, 255, 255, 0.14),
    0 30px 60px rgba(0, 0, 0, 0.35);
}

.phone img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 37px;
}

.phone-landscape {
  --phone-width: 560px;
  border-radius: 34px;
}

.phone-landscape img {
  border-radius: 26px;
}

.screen-car {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 14px;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.3);
}

.concept-tag {
  display: inline-block;
  margin-top: 10px;
  color: var(--color-text-secondary);
  font-size: 0.8125rem;
}

.section-dark .concept-tag,
.hero .concept-tag {
  color: var(--color-guidance-text-secondary);
}

/* Hero with a phone */
.hero-phone {
  --phone-width: 300px;
  text-align: center;
}

@media (min-width: 880px) {
  .hero-phone {
    --phone-width: 330px;
  }
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  color: var(--color-guidance-text-secondary);
  font-size: 0.9375rem;
}

.hero-points li::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--color-glow-bloom);
  vertical-align: 2px;
}

/* Map / Real-Life toggle */
.compare {
  display: grid;
  gap: 32px;
  align-items: center;
}

@media (min-width: 880px) {
  .compare {
    grid-template-columns: 0.9fr 1.1fr;
    gap: 56px;
  }
}

.compare-stage {
  text-align: center;
}

.segmented {
  display: inline-flex;
  margin: 0 0 18px;
  padding: 4px;
  border-radius: 999px;
  background: var(--color-bg-surface-raised);
  box-shadow: inset 0 0 0 1px var(--color-border-subtle);
}

.section-alt .segmented {
  background: var(--color-bg-canvas);
}

.segmented button {
  min-height: 40px;
  padding: 0 18px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--color-text-secondary);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.segmented button[aria-pressed="true"] {
  background: var(--color-accent-primary);
  color: var(--color-accent-on-primary);
}

.swap {
  display: grid;
}

.swap > img {
  grid-area: 1 / 1;
  transition: opacity 280ms ease;
}

.swap > img.is-hidden {
  opacity: 0;
  pointer-events: none;
}

.feature-list {
  display: grid;
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.feature-list li {
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 14px;
}

.feature-list strong {
  display: block;
  margin-bottom: 2px;
  font-size: 1.0625rem;
}

.feature-list p {
  margin: 0;
  color: var(--color-text-secondary);
}

.feature-icon {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--color-accent-subtle);
  color: var(--color-accent-primary);
  font-weight: 800;
}

/* Annotated Real-Life View */
.anatomy {
  display: grid;
  gap: 32px;
  align-items: center;
}

@media (min-width: 880px) {
  .anatomy {
    grid-template-columns: 1fr 1fr;
    gap: 56px;
  }
}

.anatomy-figure {
  --phone-width: 340px;
  margin: 0;
  text-align: center;
}

.marker-layer {
  position: absolute;
  inset: 9px;
}

.marker {
  position: absolute;
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  margin: -14px 0 0 -14px;
  border: 2px solid #FFFFFF;
  border-radius: 50%;
  background: var(--color-accent-primary);
  color: #FFFFFF;
  font-size: 0.875rem;
  font-weight: 800;
  box-shadow: 0 0 0 4px rgba(79, 195, 255, 0.35);
}

.anatomy-list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: anatomy;
}

.anatomy-list li {
  display: grid;
  grid-template-columns: 30px 1fr;
  gap: 12px;
  color: var(--color-guidance-text-secondary);
}

.anatomy-list li::before {
  counter-increment: anatomy;
  content: counter(anatomy);
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-accent-primary);
  color: #FFFFFF;
  font-size: 0.875rem;
  font-weight: 800;
}

.anatomy-list strong {
  color: #FFFFFF;
}

/* How it works */
.how-steps {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: how;
}

@media (min-width: 720px) {
  .how-steps {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1040px) {
  .how-steps {
    grid-template-columns: repeat(4, 1fr);
  }
}

.how-steps li {
  padding: 22px;
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius);
  background: var(--color-bg-surface);
}

.how-steps li::before {
  counter-increment: how;
  content: counter(how);
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  margin-bottom: 14px;
  border-radius: 10px;
  background: var(--color-accent-primary);
  color: #FFFFFF;
  font-weight: 800;
}

.how-steps h3 {
  font-size: 1.125rem;
}

.how-steps p {
  margin: 0;
  color: var(--color-text-secondary);
}

/* Use cases */
.cases {
  display: grid;
  gap: 20px;
}

@media (min-width: 720px) {
  .cases {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1040px) {
  .cases {
    grid-template-columns: repeat(3, 1fr);
  }
}

.case {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius);
  background: var(--color-bg-surface);
}

.case-media {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--color-guidance-bg);
}

.case-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Where each card's crop sits on the tall phone screen: the sign, light or pin and the band
   below it, or the top of the screen for the lane strip and the Rehearse header. */
.case-media img.focus-upper {
  object-position: 50% 36%;
}

.case-media img.focus-top {
  object-position: 50% 10%;
}

.case-media .chip {
  position: absolute;
  bottom: 10px;
  left: 10px;
  padding: 2px 8px;
  border-radius: 6px;
  background: rgba(0, 0, 0, 0.6);
  color: #FFFFFF;
  font-size: 0.75rem;
}

.case-body {
  padding: 18px 20px 20px;
}

.case-body h3 {
  font-size: 1.1875rem;
}

.case-body p {
  margin: 0;
  color: var(--color-text-secondary);
}

.case-tag {
  display: inline-block;
  margin-bottom: 8px;
  color: var(--color-accent-primary);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

/* Demo */
.demo {
  display: grid;
  gap: 32px;
  align-items: start;
}

@media (min-width: 880px) {
  .demo {
    grid-template-columns: minmax(280px, 360px) 1fr;
    gap: 56px;
  }
}

.demo-stage {
  --phone-width: 320px;
  text-align: center;
}

.demo-steps {
  display: grid;
  gap: 8px;
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
  counter-reset: demo;
}

.demo-steps button {
  display: grid;
  grid-template-columns: 30px 1fr;
  gap: 12px;
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--color-border-subtle);
  border-radius: 12px;
  background: var(--color-bg-surface);
  color: var(--color-text-primary);
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.demo-steps button::before {
  counter-increment: demo;
  content: counter(demo);
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-bg-surface-raised);
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  font-weight: 800;
}

.demo-steps button:hover {
  border-color: var(--color-accent-primary);
}

.demo-steps button[aria-current="step"] {
  border-color: var(--color-accent-primary);
  box-shadow: inset 0 0 0 1px var(--color-accent-primary);
  background: var(--color-accent-subtle);
}

.demo-steps button[aria-current="step"]::before {
  background: var(--color-accent-primary);
  color: #FFFFFF;
}

.demo-step-title {
  display: block;
  font-weight: 700;
}

.demo-step-text {
  display: block;
  margin-top: 4px;
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}

.demo-steps button:not([aria-current="step"]) .demo-step-text {
  display: none;
}

.demo-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* Car screens */
.car-grid {
  display: grid;
  gap: 28px;
}

@media (min-width: 880px) {
  .car-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.car-grid figure {
  margin: 0;
}

.car-grid figcaption {
  margin-top: 12px;
  color: var(--color-guidance-text-secondary);
}

.car-grid figcaption strong {
  display: block;
  color: #FFFFFF;
  font-size: 1.0625rem;
}

/* Safety and privacy */
.pillars {
  display: grid;
  gap: 16px;
}

@media (min-width: 720px) {
  .pillars {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1040px) {
  .pillars {
    grid-template-columns: repeat(4, 1fr);
  }
}

.pillar {
  padding: 22px;
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius);
  background: var(--color-bg-surface);
}

.pillar h3 {
  font-size: 1.125rem;
}

.pillar p {
  margin: 0;
  color: var(--color-text-secondary);
}

/* FAQ */
.faq {
  display: grid;
  gap: 10px;
  max-width: 46rem;
}

.faq details {
  border: 1px solid var(--color-border-subtle);
  border-radius: 12px;
  background: var(--color-bg-surface);
}

.faq summary {
  padding: 16px 18px;
  font-weight: 700;
  cursor: pointer;
  list-style: none;
}

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

.faq summary::after {
  content: "+";
  float: right;
  color: var(--color-accent-primary);
  font-weight: 800;
}

.faq details[open] summary::after {
  content: "\2013";
}

.faq details p {
  margin: 0;
  padding: 0 18px 16px;
  color: var(--color-text-secondary);
}

/* Application section */
.section-apply {
  border-top: 1px solid var(--color-border-subtle);
}

.apply-start {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 16px;
  margin: 8px 0 0;
}

.apply-start .cta-note {
  color: var(--color-text-secondary);
}

#apply-intro-title:focus {
  outline: none;
}

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

  .swap > img {
    transition: none;
  }
}