@import "/app-stylr/adapters/css/fonts.css";
@import "/app-stylr/adapters/css/app-stylr.css";

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

html {
  min-width: 320px;
  scroll-behavior: smooth;
  color-scheme: dark;
  background: #090b0b;
  scrollbar-color: var(--ui-border-strong) var(--ui-canvas);
}

body {
  margin: 0;
  color: var(--ui-text);
  background:
    radial-gradient(circle at 82% 3%, rgba(169, 206, 194, 0.11), transparent 28rem),
    radial-gradient(circle at 15% 0%, rgba(73, 84, 91, 0.18), transparent 30rem),
    var(--ui-canvas);
  font-family: var(--font-sans);
  font-size: var(--type-body-size);
  line-height: var(--type-body-line-height);
  caret-color: var(--ui-accent);
}

::selection {
  color: var(--ui-selected-text);
  background: var(--ui-selected);
}

button,
input,
select {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

a:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--ui-focus);
  outline-offset: 4px;
}

.page-width {
  width: min(1360px, calc(100% - 48px));
  margin-inline: auto;
}

.hero {
  min-height: 600px;
  padding-block: 112px 88px;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(300px, 0.8fr);
  align-items: center;
  gap: 80px;
  border-bottom: 1px solid var(--ui-border);
}

.hero-copy {
  max-width: 780px;
}

.hero-aside {
  display: grid;
  gap: var(--space-24);
}

.app-kicker,
.type-meta,
.mono-label {
  margin: 0 0 var(--space-12);
  color: var(--ui-text-muted);
  font-family: var(--font-mono);
  font-size: var(--type-mono-metadata-size);
  font-weight: var(--type-mono-metadata-weight);
  letter-spacing: 0.08em;
  line-height: var(--type-mono-metadata-line-height);
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  font-size: clamp(56px, 8vw, 96px);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 0.94;
}

.hero-description {
  max-width: 720px;
  margin: var(--space-32) 0 0;
  color: var(--ui-text-muted);
  font-size: clamp(20px, 2vw, 28px);
  line-height: 1.45;
}

.hero-actions {
  margin-top: var(--space-32);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-12);
}

.privacy-summary {
  max-width: 680px;
  margin: var(--space-20, 20px) 0 0;
  color: var(--ui-text-muted);
  font-size: 14px;
}

.privacy-summary a,
.start-links a,
.privacy-detail a {
  color: var(--ui-link);
  font-weight: 600;
}

.hero-meta {
  margin-top: var(--space-32);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-8);
}

.hero-meta span,
.status-pill,
.task-tag {
  display: inline-flex;
  min-height: 28px;
  align-items: center;
  padding: 4px 10px;
  border: 1px solid var(--ui-border);
  border-radius: 999px;
  color: var(--ui-text-muted);
  background: var(--ui-surface);
  font-size: 12px;
  line-height: 1;
}

.hero-mark {
  margin: 0;
  display: grid;
  justify-items: center;
  gap: var(--space-16);
}

.hero-mark img {
  width: min(100%, 380px);
  filter: drop-shadow(0 28px 44px rgba(0, 0, 0, 0.26));
}

.hero-mark figcaption {
  color: var(--ui-text-muted);
  font-family: var(--font-mono);
  font-size: 12px;
}

.system-card {
  padding: var(--space-24);
  border: 1px solid var(--ui-border-strong);
  border-radius: var(--radius-dialog);
  background: color-mix(in srgb, var(--ui-surface) 92%, transparent);
}

.system-card h2 {
  margin: var(--space-12) 0 0;
  font-size: var(--type-heading2-size);
  line-height: var(--type-heading2-line-height);
  letter-spacing: var(--type-heading2-letter-spacing);
}

.system-card > p {
  margin: var(--space-12) 0 0;
  color: var(--ui-text-muted);
}

.status-chip {
  margin-top: var(--space-20, 20px);
  min-height: 28px;
  padding: 5px 10px;
  display: inline-flex;
  align-items: center;
  color: var(--ui-accent);
  border-radius: 999px;
  background: var(--ui-selected);
  font-size: 12px;
  font-weight: 600;
  line-height: 1;
}

.section {
  padding-block: 96px;
  border-bottom: 1px solid var(--ui-border);
}

.section-heading {
  margin-bottom: var(--space-48);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 420px);
  align-items: end;
  gap: var(--space-32);
}

.section-heading h2 {
  margin: 0;
  font-size: clamp(32px, 4vw, 52px);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.section-heading > p {
  margin: 0;
  color: var(--ui-text-muted);
}

.start-grid {
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-16);
  list-style: none;
}

.start-grid li,
.privacy-grid article {
  min-width: 0;
  padding: var(--space-24) 0;
  border-top: 1px solid var(--ui-border-strong);
}

.start-grid h3,
.privacy-grid h3 {
  margin: var(--space-20, 20px) 0 var(--space-8);
  font-size: var(--type-heading3-size);
  line-height: var(--type-heading3-line-height);
}

.start-grid p,
.privacy-grid p {
  margin: var(--space-12) 0 0;
  color: var(--ui-text-muted);
}

.start-grid pre {
  margin: var(--space-16) 0 0;
  padding: var(--space-16);
  border: 1px solid var(--ui-border);
  border-radius: var(--radius-control);
  color: var(--ui-text);
  background: var(--ui-canvas);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  overflow-wrap: anywhere;
  white-space: pre-wrap;
}

.start-grid code {
  font: inherit;
}

.start-links {
  margin-top: var(--space-24);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-12) var(--space-24);
}

.learn-more {
  margin-top: var(--space-32);
  padding: var(--space-20, 20px) var(--space-24);
  border: 1px solid var(--ui-border);
  border-radius: var(--radius-card);
  background: var(--ui-surface);
}

.learn-more summary {
  width: fit-content;
  color: var(--ui-text);
  font-weight: 650;
  cursor: pointer;
}

.learn-more p {
  max-width: 760px;
  margin: var(--space-16) 0 0;
  color: var(--ui-text-muted);
}

.specimen-note {
  margin: -24px 0 var(--space-24);
  padding: var(--space-12) var(--space-16);
  border: 1px solid var(--ui-border);
  border-radius: var(--radius-control);
  color: var(--ui-text-muted);
  background: var(--ui-surface);
}

.criteria-grid,
.takeaway-grid {
  display: grid;
  gap: var(--space-16);
}

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

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

.criteria-grid article,
.takeaway-grid article {
  padding: var(--space-24) 0;
  border-top: 1px solid var(--ui-border-strong);
}

.principle-number {
  color: var(--ui-accent);
  font-family: var(--font-mono);
  font-size: 12px;
}

.criteria-grid h3,
.takeaway-grid h3 {
  margin: 0 0 var(--space-8);
  font-size: var(--type-heading3-size);
  line-height: var(--type-heading3-line-height);
}

.criteria-grid p,
.takeaway-grid p {
  margin: 0;
  color: var(--ui-text-muted);
}

.palette-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: var(--space-12);
}

.swatch {
  min-height: 180px;
  padding: var(--space-16);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: var(--space-4);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-card);
  color: #fff;
}

.swatch span {
  font-weight: 650;
}

.swatch code {
  font-family: var(--font-mono);
  font-size: 12px;
  opacity: 0.74;
}

.swatch-ink { background: var(--brand-ink); }
.swatch-charcoal { background: var(--brand-charcoal); }
.swatch-slate { background: var(--brand-slate); }
.swatch-steel { color: #000; background: var(--brand-steel); }
.swatch-steel code { opacity: 1; }
.swatch-sage { background: var(--brand-sage); color: var(--brand-ink); }
.swatch-mint { background: var(--brand-mint); color: var(--brand-ink); }

.theme-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-24);
  align-items: stretch;
}

.theme-preview {
  overflow: hidden;
  color: var(--ui-text);
  background: var(--ui-canvas);
  border: 1px solid var(--ui-border);
  border-radius: var(--radius-dialog);
}

.theme-preview-header {
  min-height: 52px;
  padding-inline: var(--space-16);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-16);
  color: var(--ui-text);
  background: var(--ui-surface);
  border-bottom: 1px solid var(--ui-border);
}

.theme-preview-header > div {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.theme-preview-header .mono-label {
  margin: 0;
  text-transform: none;
}

.theme-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ui-accent);
  box-shadow: 0 0 10px color-mix(in srgb, var(--ui-accent), transparent 44%);
}

.app-frame {
  min-height: 560px;
  display: grid;
  grid-template-columns: 156px minmax(0, 1fr);
}

.app-sidebar {
  padding: var(--space-16) var(--space-12);
  display: flex;
  flex-direction: column;
  background: var(--ui-sidebar);
  border-right: 1px solid var(--ui-border);
}

.mini-brand {
  margin-bottom: var(--space-24);
  display: flex;
  align-items: center;
  gap: var(--space-8);
  font-size: 13px;
}

.mini-mark {
  width: 24px;
  aspect-ratio: 1;
  border-radius: 7px;
  background: var(--icon-gradient);
}

.app-sidebar nav {
  display: grid;
  gap: var(--space-4);
}

.nav-item {
  min-height: 40px;
  padding-inline: var(--space-8);
  display: flex;
  align-items: center;
  gap: var(--space-8);
  border: 1px solid transparent;
  border-radius: var(--radius-control);
  color: var(--ui-text-muted);
  font-size: 13px;
  text-decoration: none;
}

.nav-item.is-active {
  color: var(--ui-selected-text);
  background: var(--ui-selected);
  border-color: var(--ui-border-strong);
}

.nav-icon {
  width: 16px;
  text-align: center;
}

.sync-status {
  margin-top: auto;
  display: flex;
  align-items: center;
  gap: var(--space-8);
  color: var(--ui-text-muted);
  font-size: 12px;
}

.status-dot {
  width: 7px;
  height: 7px;
  flex: 0 0 auto;
  border-radius: 50%;
}

.status-dot.is-synced {
  background: var(--ui-accent);
  box-shadow: 0 0 9px color-mix(in srgb, var(--ui-accent), transparent 20%);
}

.app-workspace {
  padding: var(--space-24);
}

.workspace-header {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: var(--space-16);
}

.workspace-header h3,
.light-card h3 {
  margin: 0;
  font-size: var(--type-heading3-size);
  line-height: var(--type-heading3-line-height);
  letter-spacing: var(--type-heading3-letter-spacing);
}

.app-kicker {
  margin-bottom: var(--space-4);
}

.icon-button {
  width: var(--size-control);
  height: var(--size-control);
  display: grid;
  place-items: center;
  border: 1px solid var(--ui-border);
  border-radius: var(--radius-control);
  color: var(--ui-text-muted);
  background: transparent;
}

.metric-row {
  margin-top: var(--space-24);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-8);
}

.metric-card,
.light-card,
.composer,
.selection-row {
  background: var(--ui-surface);
  border: 1px solid var(--ui-border);
  border-radius: var(--radius-card);
}

.metric-card {
  padding: var(--space-12);
  display: grid;
  gap: var(--space-4);
}

.metric-card span {
  color: var(--ui-text-muted);
  font-size: 11px;
}

.metric-card strong {
  font-family: var(--font-mono);
  font-size: 20px;
}

.composer {
  margin-top: var(--space-16);
  padding: var(--space-16);
}

.sample-field {
  display: grid;
  gap: var(--space-8);
}

.sample-label {
  color: var(--ui-text-muted);
  font-size: 12px;
  font-weight: 500;
}

.input-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-8);
}

input,
select,
.sample-input {
  width: 100%;
  min-height: var(--size-control);
  padding-inline: var(--space-12);
  display: flex;
  align-items: center;
  color: var(--ui-text);
  background: var(--ui-surface-raised);
  border: 1px solid var(--ui-border);
  border-radius: var(--radius-control);
  outline: none;
}

input:focus,
select:focus,
.sample-input.is-focused {
  border-color: var(--ui-focus);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--ui-focus), transparent 86%);
}

.select-field {
  position: relative;
  display: grid;
}

.select-field select {
  appearance: none;
  padding-right: 44px;
}

.select-field::after {
  content: "";
  position: absolute;
  top: 50%;
  right: var(--space-16);
  width: 7px;
  height: 7px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  color: var(--ui-text);
  pointer-events: none;
  transform: translateY(-70%) rotate(45deg);
}

.composer small {
  display: block;
  margin-top: var(--space-8);
  color: var(--ui-text-muted);
  font-size: 11px;
}

.button {
  min-height: var(--size-control);
  padding-inline: var(--space-16);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-control);
  font-weight: 600;
  transition:
    background var(--motion-control) ease,
    border-color var(--motion-control) ease;
}

a.button {
  text-decoration: none;
}

.button-primary {
  color: var(--ui-accent-text);
  background: var(--ui-accent);
  border: 1px solid var(--ui-accent);
}

a.button-primary:hover {
  background: var(--ui-accent-strong);
  border-color: var(--ui-accent-strong);
}

.button-secondary {
  color: var(--ui-text);
  background: transparent;
  border: 1px solid var(--ui-border-strong);
}

.task-list {
  margin-top: var(--space-16);
  display: grid;
  gap: var(--space-8);
}

.task-row {
  min-height: 48px;
  padding-inline: var(--space-12);
  display: grid;
  grid-template-columns: 24px 1fr auto;
  align-items: center;
  gap: var(--space-8);
  border: 1px solid transparent;
  border-radius: var(--radius-control);
  color: var(--ui-text-muted);
  font-size: 13px;
}

.task-row.is-selected {
  color: var(--ui-selected-text);
  background: var(--ui-selected);
  border-color: var(--ui-border-strong);
}

.task-check {
  width: 20px;
  height: 20px;
  display: grid;
  place-items: center;
  border: 1px solid var(--ui-border-strong);
  border-radius: 50%;
  font-size: 11px;
}

.task-check.is-complete {
  color: var(--ui-accent-text);
  background: var(--ui-success);
  border-color: var(--ui-success);
}

.task-check.is-complete::after {
  content: "";
  width: 5px;
  height: 9px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: translateY(-1px) rotate(45deg);
}

.component-stack {
  width: min(100%, 760px);
  margin-inline: auto;
  padding: var(--space-24);
  display: flex;
  flex-direction: column;
  gap: var(--space-16);
}

.light-card {
  padding: var(--space-24);
}

.light-card > p:not(.app-kicker) {
  color: var(--ui-text-muted);
}

.button-row {
  margin-top: var(--space-24);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-8);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
}

.text-link {
  color: var(--ui-link);
  font-weight: 600;
}

.selection-row {
  min-height: 68px;
  padding: var(--space-12);
  display: grid;
  grid-template-columns: 32px 1fr auto;
  align-items: center;
  gap: var(--space-12);
  color: var(--ui-selected-text);
  background: var(--ui-selected);
  border-color: var(--ui-border-strong);
}

.selection-row small {
  display: block;
  color: var(--ui-text-muted);
}

.selection-icon {
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: var(--ui-accent-text);
  background: var(--ui-accent);
}

.status-pill {
  color: var(--ui-selected-text);
  background: transparent;
  border-color: var(--ui-border-strong);
}

.privacy-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-16);
}

.privacy-grid h3 {
  margin-top: 0;
}

.privacy-detail {
  max-width: 860px;
  margin: var(--space-24) 0 0;
  color: var(--ui-text-muted);
}

.type-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--space-16);
}

.type-specimen {
  min-height: 240px;
  padding: var(--space-32);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border: 1px solid var(--ui-border);
  border-radius: var(--radius-card);
  background: var(--ui-surface);
}

.type-specimen p {
  margin: 0;
}

.type-display {
  max-width: 720px;
  font-size: var(--type-display-size);
  font-weight: var(--type-display-weight);
  letter-spacing: var(--type-display-letter-spacing);
  line-height: var(--type-display-line-height);
}

.type-heading1 {
  font-size: var(--type-heading1-size);
  font-weight: var(--type-heading1-weight);
  letter-spacing: var(--type-heading1-letter-spacing);
  line-height: var(--type-heading1-line-height);
}

.type-heading2 {
  font-size: var(--type-heading2-size);
  font-weight: var(--type-heading2-weight);
  letter-spacing: var(--type-heading2-letter-spacing);
  line-height: var(--type-heading2-line-height);
}

.type-body {
  max-width: var(--size-reading-width);
}

.mono-specimen {
  font-family: var(--font-mono);
  color: var(--brand-mint);
  background: var(--brand-ink);
}

.character-specimen p {
  font-size: 23px;
  letter-spacing: 0.01em;
  line-height: 1.4;
}

.feedback-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
}

.feedback-card {
  min-height: 112px;
  padding: var(--space-20, 20px);
  display: grid;
  grid-template-columns: 40px 1fr;
  align-items: start;
  gap: var(--space-12);
  border: 1px solid currentColor;
  border-radius: var(--radius-card);
}

.feedback-card strong,
.feedback-card p {
  margin: 0;
}

.feedback-card p {
  margin-top: var(--space-4);
  opacity: 0.78;
}

.feedback-icon {
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border: 1px solid currentColor;
  border-radius: 50%;
  font-weight: 700;
}

.feedback-success { color: var(--ui-success); background: var(--ui-success-surface); }
.feedback-warning { color: var(--ui-warning); background: var(--ui-warning-surface); }
.feedback-danger { color: var(--ui-danger); background: var(--ui-danger-surface); }
.feedback-info { color: var(--ui-info); background: var(--ui-info-surface); }

.responsive-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 0.58fr;
  gap: var(--space-24);
  align-items: end;
}

.device-example {
  margin: 0;
}

.device-screen {
  position: relative;
  overflow: hidden;
  height: 280px;
  display: grid;
  grid-template-columns: 22% 1fr 26%;
  border: 8px solid var(--brand-charcoal);
  border-radius: var(--radius-dialog);
  background: var(--ui-canvas);
  box-shadow: 0 20px 36px rgba(0, 0, 0, 0.18);
}

.tablet-example .device-screen {
  grid-template-columns: 25% 1fr;
}

.phone-example .device-screen {
  height: 320px;
  grid-template-columns: 1fr;
  border-radius: 28px;
}

.diagram-sidebar {
  background: var(--ui-sidebar);
  border-right: 1px solid var(--ui-border);
}

.diagram-workspace {
  background:
    linear-gradient(var(--ui-surface), var(--ui-surface)) 12% 18% / 76% 22% no-repeat,
    linear-gradient(var(--ui-surface), var(--ui-surface)) 12% 52% / 76% 12% no-repeat,
    var(--ui-canvas);
}

.diagram-detail {
  background: var(--ui-surface);
  border-left: 1px solid var(--ui-border);
}

.diagram-scrim {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.58);
  backdrop-filter: blur(4px);
}

.diagram-drawer {
  position: absolute;
  inset: 0 0 0 43%;
  background: var(--ui-surface);
  border-left: 1px solid var(--ui-border);
}

.diagram-sheet {
  position: absolute;
  inset: 42% 0 0;
  border-radius: var(--radius-dialog) var(--radius-dialog) 0 0;
  background: var(--ui-surface);
  border-top: 1px solid var(--ui-border);
}

.device-example figcaption,
.icon-card figcaption {
  margin-top: var(--space-12);
  display: flex;
  justify-content: space-between;
  gap: var(--space-8);
  color: var(--ui-text-muted);
  font-size: 13px;
}

.device-example figcaption strong,
.icon-card figcaption strong {
  color: var(--ui-text);
}

.icon-grid {
  display: grid;
  grid-template-columns: 280px 280px 1fr;
  gap: var(--space-24);
  align-items: center;
}

.icon-card {
  margin: 0;
}

.icon-card img {
  width: 100%;
  display: block;
}

.icon-rules {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
}

.icon-rules p {
  min-height: 132px;
  margin: 0;
  padding: var(--space-16);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  color: var(--ui-text-muted);
  border: 1px solid var(--ui-border);
  border-radius: var(--radius-card);
  background: var(--ui-surface);
}

.icon-rules span {
  color: var(--ui-text);
  font-family: var(--font-mono);
  font-size: 32px;
  font-weight: 650;
}

.platform-icon-grid {
  margin-top: var(--space-32);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-16);
}

.platform-icon-card {
  margin: 0;
  padding: var(--space-16);
  border: 1px solid var(--ui-border);
  border-radius: var(--radius-card);
  background: var(--ui-surface);
}

.platform-icon-preview {
  min-height: 200px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-control);
  background:
    linear-gradient(45deg, var(--ui-surface-raised) 25%, transparent 25%) 0 0 / 20px 20px,
    linear-gradient(-45deg, var(--ui-surface-raised) 25%, transparent 25%) 0 10px / 20px 20px,
    linear-gradient(45deg, transparent 75%, var(--ui-surface-raised) 75%) 10px -10px / 20px 20px,
    linear-gradient(-45deg, transparent 75%, var(--ui-surface-raised) 75%) -10px 0 / 20px 20px,
    var(--ui-canvas);
}

.platform-icon-preview img {
  width: 128px;
  height: 128px;
  object-fit: contain;
}

.platform-icon-preview-apple img {
  width: 140px;
  height: 140px;
}

.platform-icon-preview-web img {
  width: 160px;
  height: 160px;
}

.platform-icon-card figcaption {
  margin-top: var(--space-12);
  display: flex;
  justify-content: space-between;
  gap: var(--space-8);
  color: var(--ui-text-muted);
  font-size: 13px;
}

.platform-icon-card figcaption strong {
  color: var(--ui-text);
}

footer {
  min-height: 120px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-24);
  color: var(--ui-text-muted);
  font-family: var(--font-mono);
  font-size: 12px;
}

@media (max-width: 1100px) {
  .hero,
  .section-heading,
  .theme-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    gap: var(--space-48);
  }

  .hero-mark {
    justify-items: start;
  }

  .hero-mark img {
    width: 260px;
  }

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

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

  .phone-example {
    max-width: 320px;
  }

  .icon-grid {
    grid-template-columns: 220px 220px 1fr;
  }

  .start-grid,
  .privacy-grid {
    grid-template-columns: 1fr;
  }

  .platform-icon-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 760px) {
  .page-width {
    width: min(100% - 28px, 1360px);
  }

  .hero {
    min-height: auto;
    padding-block: 72px 64px;
  }

  .section {
    padding-block: 64px;
  }

  .palette-grid,
  .criteria-grid,
  .takeaway-grid,
  .type-grid,
  .feedback-grid,
    .responsive-grid,
    .icon-grid,
    .platform-icon-grid,
    .form-grid {
    grid-template-columns: 1fr;
  }

  .hero-actions {
    display: grid;
  }

  .hero-actions .button {
    width: 100%;
  }

  .swatch {
    min-height: 120px;
  }

  .app-frame {
    grid-template-columns: 1fr;
  }

  .app-sidebar {
    display: none;
  }

  .app-workspace,
  .component-stack {
    padding: var(--space-16);
  }

  .metric-row {
    grid-template-columns: 1fr 1fr;
  }

  .input-row {
    grid-template-columns: 1fr;
  }

  .icon-card,
  .phone-example {
    max-width: 280px;
  }
}

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

/* Charcoal panel composition; shared values come from the generated adapter. */
html:root {
  background: var(--ui-canvas);
  & body { background: var(--ui-canvas); }
  & .page-width { width: min(1280px, calc(100% - 48px)); }
  & .hero { min-height: 0; padding-block: 48px 32px; gap: 48px; grid-template-columns: minmax(0, 1.3fr) minmax(280px, 0.7fr); }
  & .hero h1 { font-size: clamp(40px, 5vw, 64px); line-height: 1.05; letter-spacing: -0.03em; }
  & .hero-description { font-size: 20px; line-height: 1.5; margin-top: 24px; max-width: 60ch; }
  & .hero-mark { grid-template-columns: 64px 1fr; gap: 16px; align-items: center; text-align: left; }
  & .hero-mark img { width: 64px; filter: none; }
  & .hero-mark figcaption { font-family: var(--font-sans); font-size: 14px; }
  & .hero-aside { gap: 24px; }
  & .system-card { border: 1px solid var(--ui-border); background: var(--ui-surface); border-radius: var(--radius-card); box-shadow: none; }
  & .system-card h2 { margin-top: 0; font-size: 22px; }
  & .section { margin-top: 24px; padding: 24px; background: var(--ui-surface); border: 1px solid var(--ui-border); border-radius: var(--radius-card); }
  & .section-heading { padding-bottom: 24px; margin-bottom: 24px; border-bottom: 1px solid var(--ui-border); grid-template-columns: minmax(0, 1fr) minmax(240px, .8fr); }
  & .section-heading h2 { font-size: clamp(24px, 2.5vw, 32px); line-height: 1.2; letter-spacing: -0.025em; }
  & .start-grid li { border-top: 0; padding-block: 0; }
  & .start-grid { gap: 24px; }
  & .start-grid h3 { font-size: 18px; }
  & .button { border-radius: var(--radius-button); }
  & .button-primary { background: var(--ui-accent); color: var(--ui-accent-text); }
  & .button-secondary { background: var(--ui-surface-raised); border-color: var(--ui-border-strong); }
  & .status-chip { border-radius: 6px; }
  & .theme-preview, & .metric-card { box-shadow: none; }
  & .theme-preview { border-color: var(--ui-border); border-radius: var(--radius-card); }
  & .sample-input, & .select-field { border-color: var(--ui-border-strong); }
  & .hero-meta span { background: transparent; border-radius: 6px; }
  & :is(a, button, summary, select):focus-visible { outline: 2px solid var(--ui-focus); outline-offset: 4px; }
  & ::selection { background: var(--ui-accent); color: var(--ui-accent-text); }
}
@media (max-width: 800px) {
  html:root {
    & .hero { grid-template-columns: 1fr; gap: 24px; }
    & .hero-aside { grid-template-columns: 1fr; }
    & .section-heading { grid-template-columns: 1fr; gap: 16px; }
    & .start-grid { grid-template-columns: 1fr; gap: 24px; }
  }
}
@media (max-width: 480px) {
  html:root {
    & .page-width { width: calc(100% - 32px); }
    & .hero { padding-top: 32px; }
    & .section { padding: 20px; }
    & .hero-description { font-size: 18px; }
    & .hero-meta { margin-top: 24px; }
  }
}