/* Hallmark · macrostructure: Workbench · genre: atmospheric · theme: Midnight · nav: N5 Floating pill · footer: Ft5 Statement
 * audience: Chinese visual-novel players · use: download · tone: technical nocturnal
 * enrichment: real, manually reviewed game imagery · motion: reveal-once, CTA-shimmer, dialog-fade
 * Hallmark · pre-emit critique: P5 H5 E4 S5 R4 V5
 * Hallmark · final gates: contrast 40–41 pass · slop 42–45 pass · honesty/chrome/tokens 46–48 pass
 * Hallmark · responsive 34,49–57 pass · icon provenance 30 pass · 1280×800 hero essentials visible
 */
@import url("../../tokens.css");

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

html,
body {
  overflow-x: clip;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 6.5rem;
  color-scheme: dark;
}

body {
  margin: 0;
  min-width: 20rem;
  padding-bottom: calc(5.25rem + env(safe-area-inset-bottom));
  background:
    radial-gradient(circle at 83% 8%, var(--color-accent-soft), var(--color-transparent) 27%),
    linear-gradient(180deg, var(--color-paper-deep), var(--color-paper) 36rem);
  color: var(--color-ink-2);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: none;
}

img,
picture {
  display: block;
  max-width: 100%;
}

img {
  height: auto;
}

a {
  color: inherit;
  text-decoration-thickness: var(--rule-hair);
  text-underline-offset: 0.2em;
}

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

button,
input,
select,
textarea {
  font: inherit;
}

button {
  color: inherit;
}

:focus {
  outline: 0;
}

:focus-visible {
  outline: var(--rule-strong) solid var(--color-focus);
  outline-offset: var(--space-2xs);
}

.btn--primary:focus-visible,
.tab[aria-selected="true"]:focus-visible {
  outline-color: var(--color-paper-deep);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px var(--color-focus);
}

h1,
h2,
h3,
h4,
p,
figure,
blockquote,
dl,
dd {
  margin-block-start: 0;
}

h1,
h2,
h3,
h4 {
  color: var(--color-ink);
  font-family: var(--font-display);
  font-style: normal;
  line-height: 1.13;
  letter-spacing: -0.025em;
  overflow-wrap: anywhere;
  min-width: 0;
}

h1 {
  margin-block-end: var(--space-lg);
  font-size: var(--text-display-small);
  font-weight: 700;
}

h2 {
  margin-block-end: var(--space-md);
  font-size: clamp(2rem, 4vw, var(--text-3xl));
  font-weight: 700;
}

h3 {
  margin-block-end: var(--space-sm);
  font-size: var(--text-lg);
  font-weight: 700;
}

h4 {
  margin-block-end: var(--space-xs);
  font-size: var(--text-md);
  font-weight: 700;
}

p:last-child {
  margin-block-end: 0;
}

table {
  width: 100%;
  border-collapse: collapse;
}

.skip-link {
  position: fixed;
  inset-block-start: var(--space-sm);
  inset-inline-start: var(--space-sm);
  z-index: var(--z-tooltip);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-accent);
  color: var(--color-accent-ink);
  transform: translateY(-180%);
  transition: transform var(--dur-short) var(--ease-out);
  white-space: nowrap;
}

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

.site-shell {
  position: relative;
  z-index: var(--z-base);
}

.container {
  width: min(100%, var(--content-max));
  margin-inline: auto;
  padding-inline: var(--page-gutter);
}

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

.muted {
  color: var(--color-muted);
}

.meta {
  color: var(--color-subtle);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
}

.eyebrow {
  margin-block-end: var(--space-sm);
  color: var(--color-accent);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
}

.section {
  padding-block: var(--space-section);
}

.section--compact {
  padding-block: var(--space-3xl);
}

.section--deep {
  background: var(--color-paper-deep);
  color: var(--color-ink-2);
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-md);
  margin-block-end: var(--space-2xl);
}

.section-head p {
  max-width: 56ch;
  margin-block-end: 0;
  color: var(--color-muted);
  font-size: var(--text-md);
}

.nav-pill {
  position: fixed;
  inset-block-start: max(var(--space-md), env(safe-area-inset-top));
  inset-inline-start: 50%;
  z-index: var(--z-sticky);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  width: max-content;
  max-width: min(calc(100% - 2rem), 45rem);
  min-height: 3.5rem;
  padding: var(--space-xs);
  background: var(--color-nav);
  border: var(--rule-hair) solid var(--color-rule);
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-nav);
  backdrop-filter: blur(14px) saturate(120%);
  transform: translateX(-50%);
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  min-height: 2.75rem;
  padding-inline: var(--space-sm);
  color: var(--color-ink);
  font-family: var(--font-outlier);
  font-weight: 700;
  letter-spacing: -0.02em;
  text-decoration: none;
  white-space: nowrap;
}

.wordmark__mark {
  display: grid;
  width: 1.5rem;
  height: 1.5rem;
  place-items: center;
  background: var(--color-accent);
  color: var(--color-accent-ink);
  border-radius: var(--radius-xs);
  font-size: var(--text-xs);
}

.nav-links {
  display: none;
  align-items: center;
  gap: var(--space-2xs);
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  padding-inline: var(--space-sm);
  border-radius: var(--radius-pill);
  color: var(--color-muted);
  font-size: var(--text-sm);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--dur-short) var(--ease-out), background-color var(--dur-short) var(--ease-out);
}

.nav-link[aria-current="page"] {
  color: var(--color-ink);
  background: var(--color-paper-3);
}

.menu-toggle {
  display: grid;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  place-items: center;
  background: var(--color-paper-3);
  border: 0;
  border-radius: var(--radius-pill);
  cursor: pointer;
}

.menu-toggle__lines,
.menu-toggle__lines::before,
.menu-toggle__lines::after {
  display: block;
  width: 1rem;
  height: var(--rule-strong);
  background: var(--color-ink);
  content: "";
}

.menu-toggle__lines {
  position: relative;
}

.menu-toggle__lines::before {
  position: absolute;
  transform: translateY(-0.35rem);
}

.menu-toggle__lines::after {
  position: absolute;
  transform: translateY(0.35rem);
}

.mobile-menu {
  position: fixed;
  inset-block-start: 5.25rem;
  inset-inline: var(--space-md);
  z-index: var(--z-dropdown);
  display: grid;
  gap: var(--space-xs);
  padding: var(--space-md);
  background: var(--color-paper-2);
  border: var(--rule-hair) solid var(--color-rule);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-nav);
}

.mobile-menu[hidden] {
  display: none;
}

.mobile-menu a {
  display: flex;
  align-items: center;
  min-height: 2.75rem;
  padding-inline: var(--space-md);
  border-radius: var(--radius-sm);
  text-decoration: none;
  white-space: nowrap;
}

.btn {
  position: relative;
  isolation: isolate;
  display: inline-flex;
  min-height: 3rem;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-lg);
  overflow: hidden;
  border: var(--rule-hair) solid var(--color-rule-strong);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  transition: transform var(--dur-micro) var(--ease-out), background-color var(--dur-short) var(--ease-out), color var(--dur-short) var(--ease-out);
}

.btn--primary {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-accent-ink);
}

.btn--primary::after {
  content: "";
  position: absolute;
  inset-block: 0;
  inset-inline-start: -55%;
  z-index: -1;
  width: 38%;
  background: linear-gradient(110deg, var(--color-transparent), var(--color-shine), var(--color-transparent));
  transform: translateX(0) skewX(-18deg);
  transition: transform var(--dur-long) var(--ease-out);
}

.btn--secondary {
  background: var(--color-paper-3);
  color: var(--color-ink);
}

.btn--ghost {
  background: var(--color-transparent);
  color: var(--color-ink);
}

.btn[aria-disabled="true"],
.btn:disabled {
  cursor: not-allowed;
  opacity: 0.5;
  transform: none;
}

.btn[data-state="loading"]::before {
  content: "";
  width: 0.9rem;
  height: 0.9rem;
  border: var(--rule-strong) solid var(--color-subtle);
  border-block-start-color: var(--color-accent-ink);
  border-radius: var(--radius-pill);
}

.btn[data-state="error"] {
  border-color: var(--color-error);
}

.btn[data-state="success"] {
  border-color: var(--color-success);
}

.hero {
  position: relative;
  isolation: isolate;
  padding-block: var(--hero-pad-start) var(--hero-pad-end);
}

.hero::before {
  content: none;
}

.hero__backdrop {
  position: absolute;
  inset: 0;
  z-index: -1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.34;
}

.hero-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-2xl);
  align-items: center;
}

.hero__copy {
  min-width: 0;
}

.hero__title-zh {
  display: block;
}

.hero__title-alt {
  display: block;
  margin-block-start: var(--space-sm);
  color: var(--color-muted);
  font-family: var(--font-body);
  font-size: clamp(1rem, 2vw, 1.35rem);
  font-weight: 500;
  letter-spacing: 0.01em;
}

.hero__lede {
  max-width: 56ch;
  margin-block-end: var(--space-xl);
  color: var(--color-ink-2);
  font-size: var(--text-md);
}

.tag-row,
.metric-row,
.action-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.tag-row {
  margin-block-end: var(--space-lg);
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  padding-inline: var(--space-sm);
  background: color-mix(in oklch, var(--color-paper-3) 82%, var(--color-transparent));
  border: var(--rule-hair) solid var(--color-rule);
  border-radius: var(--radius-xs);
  color: var(--color-ink-2);
  font-size: var(--text-sm);
  white-space: nowrap;
}

.metric-row {
  margin-block-end: var(--space-xl);
}

.metric {
  min-width: 8.5rem;
  padding-block-start: var(--space-sm);
  border-block-start: var(--rule-hair) solid var(--color-rule);
}

.metric strong,
.metric span {
  display: block;
}

.metric strong {
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-variant-numeric: tabular-nums;
}

.metric span {
  color: var(--color-subtle);
  font-size: var(--text-sm);
}

.hero__media {
  margin: 0;
  overflow: hidden;
  background: var(--color-paper-2);
  border: var(--rule-hair) solid var(--color-rule-strong);
  border-radius: var(--radius-sm);
}

.hero__media img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.hero__media figcaption {
  padding: var(--space-sm) var(--space-md);
  color: var(--color-subtle);
  font-family: var(--font-body);
  font-size: var(--text-xs);
}

.info-dock {
  position: relative;
  z-index: var(--z-raised);
  margin-block-start: calc(var(--space-xl) * -1);
}

.info-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  background: var(--color-paper-2);
  border: var(--rule-hair) solid var(--color-rule);
}

.info-item {
  padding: var(--space-lg);
  border-block-end: var(--rule-hair) solid var(--color-rule);
}

.info-item:last-child {
  border-block-end: 0;
}

.info-item dt {
  color: var(--color-subtle);
  font-size: var(--text-sm);
}

.info-item dd {
  margin: var(--space-xs) 0 0;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-weight: 700;
}

.story-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-2xl);
  align-items: start;
}

.story-copy {
  max-width: var(--reading-max);
  font-size: var(--text-md);
}

.story-copy p {
  margin-block-end: var(--space-lg);
}

.story-note {
  padding: var(--space-lg);
  background: var(--color-paper-2);
  border: var(--rule-hair) solid var(--color-rule);
  border-radius: var(--radius-sm);
}

.feature-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-md);
}

.feature-card {
  position: relative;
  min-height: 13rem;
  padding: var(--space-xl);
  background: var(--color-paper-2);
  border: var(--rule-hair) solid var(--color-rule);
  border-radius: var(--radius-sm);
  transition: transform var(--dur-short) var(--ease-out), background-color var(--dur-short) var(--ease-out);
}

.feature-card__index {
  display: block;
  margin-block-end: var(--space-xl);
  color: var(--color-accent);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-variant-numeric: tabular-nums;
}

.feature-card p {
  max-width: 42ch;
  margin-block-end: 0;
  color: var(--color-muted);
}

.gallery-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-md);
}

.gallery-item {
  position: relative;
  min-width: 0;
  margin: 0;
  overflow: hidden;
  background: var(--color-paper-2);
  border: var(--rule-hair) solid var(--color-rule);
  border-radius: var(--radius-xs);
}

.gallery-item[hidden] {
  display: none;
}

.gallery-trigger {
  display: block;
  width: 100%;
  min-height: 2.75rem;
  padding: 0;
  background: var(--color-transparent);
  border: 0;
  cursor: zoom-in;
}

.gallery-trigger img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  transition: transform var(--dur-short) var(--ease-out), opacity var(--dur-short) var(--ease-out);
}

.gallery-item figcaption {
  padding: var(--space-sm) var(--space-md);
  color: var(--color-muted);
  font-size: var(--text-sm);
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-block-end: var(--space-xl);
}

.tab {
  min-height: 2.75rem;
  padding-inline: var(--space-md);
  background: var(--color-paper-2);
  border: var(--rule-hair) solid var(--color-rule);
  border-radius: var(--radius-xs);
  cursor: pointer;
  white-space: nowrap;
}

.tab[aria-selected="true"] {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-accent-ink);
}

.download-band {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-xl);
  padding: clamp(2rem, 6vw, 4rem);
  background: var(--color-paper-2);
  border: var(--rule-hair) solid var(--color-rule-strong);
}

.download-band__action .btn {
  width: 100%;
  min-height: 4rem;
  font-size: var(--text-md);
}

.timeline {
  display: grid;
  gap: var(--space-md);
}

.timeline-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-md);
  padding-block: var(--space-lg);
  border-block-start: var(--rule-hair) solid var(--color-rule);
}

.timeline-item time {
  color: var(--color-accent);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-variant-numeric: tabular-nums;
}

.profile-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-md);
}

.profile-card {
  padding: var(--space-xl);
  background: var(--color-paper-2);
  border-block-start: var(--rule-strong) solid var(--color-rule-strong);
}

.profile-card strong {
  color: var(--color-accent);
}

.snapshot {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-lg);
  margin-block-end: var(--space-xl);
  padding: var(--space-xl);
  background: var(--color-paper-3);
  border-radius: var(--radius-sm);
}

.snapshot__number {
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 7vw, 5rem);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}

.accordion {
  border-block-start: var(--rule-hair) solid var(--color-rule);
}

.accordion details {
  border-block-end: var(--rule-hair) solid var(--color-rule);
}

.accordion summary {
  position: relative;
  display: flex;
  min-height: 4rem;
  align-items: center;
  padding: var(--space-md) 3.25rem var(--space-md) 0;
  color: var(--color-ink);
  cursor: pointer;
  font-family: var(--font-display);
  font-size: var(--text-md);
  font-weight: 700;
  list-style: none;
}

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

.accordion summary::after {
  content: "+";
  position: absolute;
  inset-inline-end: var(--space-sm);
  display: grid;
  width: 2rem;
  height: 2rem;
  place-items: center;
  border: var(--rule-hair) solid var(--color-rule-strong);
  border-radius: var(--radius-pill);
  color: var(--color-accent);
  font-family: var(--font-body);
  font-weight: 400;
}

.accordion details[open] summary::after {
  content: "−";
}

.accordion__content {
  max-width: var(--reading-max);
  padding: 0 var(--space-xl) var(--space-lg) 0;
  color: var(--color-muted);
}

.platform-grid,
.requirements-grid,
.guide-grid,
.article-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-md);
}

.platform-card,
.requirement-card,
.guide-card,
.article-card {
  padding: var(--space-xl);
  background: var(--color-paper-2);
  border: var(--rule-hair) solid var(--color-rule);
}

.platform-card[aria-disabled="true"] {
  opacity: 0.62;
}

.platform-card .btn {
  margin-block-start: var(--space-md);
}

.recommended {
  display: inline-block;
  margin-block-end: var(--space-md);
  padding: var(--space-2xs) var(--space-sm);
  background: var(--color-accent);
  color: var(--color-accent-ink);
  font-size: var(--text-xs);
  font-weight: 700;
}

.requirement-card dl {
  margin: 0;
}

.requirement-card dl > div {
  display: grid;
  grid-template-columns: minmax(7rem, 0.4fr) minmax(0, 1fr);
  gap: var(--space-md);
  padding-block: var(--space-sm);
  border-block-start: var(--rule-hair) solid var(--color-rule);
}

.requirement-card dt {
  color: var(--color-subtle);
}

.requirement-card dd {
  color: var(--color-ink-2);
}

.steps {
  counter-reset: steps;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-md);
}

.step {
  counter-increment: steps;
  padding: var(--space-xl);
  background: var(--color-paper-2);
  border-block-start: var(--rule-strong) solid var(--color-accent);
}

.step::before {
  content: "0" counter(steps);
  display: block;
  margin-block-end: var(--space-lg);
  color: var(--color-accent);
  font-family: var(--font-body);
}

.guide-card a,
.article-card a {
  color: var(--color-accent);
  font-weight: 700;
  white-space: nowrap;
}

.toc {
  position: static;
  padding: var(--space-lg);
  background: var(--color-paper-2);
  border: var(--rule-hair) solid var(--color-rule);
}

.toc h2 {
  font-size: var(--text-md);
}

.toc ol,
.toc ul {
  margin: 0;
  padding-inline-start: var(--space-lg);
}

.toc a {
  color: var(--color-muted);
  text-decoration: none;
}

.toc a:hover,
.toc a:focus-visible {
  color: var(--color-accent);
}

.guide-layout,
.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-2xl);
  align-items: start;
}

.prose {
  min-width: 0;
  max-width: var(--reading-max);
}

.prose > section {
  padding-block: var(--space-xl);
  border-block-start: var(--rule-hair) solid var(--color-rule);
}

.prose p,
.prose li {
  color: var(--color-ink-2);
}

.prose a {
  color: var(--color-accent);
}

.prose table {
  margin-block: var(--space-lg);
  font-variant-numeric: tabular-nums;
}

.prose th,
.prose td {
  padding: var(--space-sm);
  border-block-end: var(--rule-hair) solid var(--color-rule);
  text-align: start;
  vertical-align: top;
}

.prose th {
  color: var(--color-ink);
}

.answer-box,
.notice {
  margin-block-end: var(--space-xl);
  padding: var(--space-lg);
  background: var(--color-paper-3);
  border: var(--rule-hair) solid var(--color-rule-strong);
}

.answer-box strong,
.notice strong {
  color: var(--color-ink);
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  padding-block-start: 7rem;
  color: var(--color-subtle);
  font-size: var(--text-sm);
}

.breadcrumbs a {
  white-space: nowrap;
}

.page-hero {
  padding-block: var(--space-3xl);
}

.page-hero p {
  max-width: 60ch;
  color: var(--color-muted);
  font-size: var(--text-md);
}

.sources-list {
  padding-inline-start: var(--space-lg);
  color: var(--color-muted);
  font-size: var(--text-sm);
}

.lightbox {
  position: fixed;
  inset: 0;
  width: min(94%, 76rem);
  height: fit-content;
  max-height: 90dvh;
  margin: auto;
  padding: 0;
  overflow: visible;
  background: var(--color-paper-deep);
  border: var(--rule-hair) solid var(--color-rule-strong);
  color: var(--color-ink);
  box-shadow: var(--shadow-modal);
}

.lightbox::backdrop {
  background: var(--color-overlay);
}

.lightbox__figure {
  margin: 0;
}

.lightbox__figure img {
  width: 100%;
  max-height: 78dvh;
  object-fit: contain;
}

.lightbox__figure figcaption {
  padding: var(--space-sm) 4rem var(--space-sm) var(--space-md);
  color: var(--color-muted);
  font-size: var(--text-sm);
}

.lightbox__close,
.lightbox__prev,
.lightbox__next {
  position: absolute;
  z-index: var(--z-raised);
  display: grid;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  place-items: center;
  background: var(--color-paper-deep);
  border: var(--rule-hair) solid var(--color-rule-strong);
  border-radius: var(--radius-pill);
  cursor: pointer;
}

.lightbox__close {
  inset-block-start: var(--space-sm);
  inset-inline-end: var(--space-sm);
}

.lightbox__prev,
.lightbox__next {
  inset-block-start: 50%;
  transform: translateY(-50%);
}

.lightbox__prev {
  inset-inline-start: var(--space-sm);
}

.lightbox__next {
  inset-inline-end: var(--space-sm);
}

.final-cta {
  padding-block: var(--space-section);
  text-align: start;
}

.final-cta__inner {
  padding: clamp(2rem, 7vw, 5rem);
  background: var(--color-paper-2);
  border: var(--rule-hair) solid var(--color-rule-strong);
  color: var(--color-ink-2);
}

.final-cta h2 {
  color: var(--color-ink);
}

.final-cta p {
  color: var(--color-ink-2);
}

.footer {
  padding-block: var(--space-3xl) calc(var(--space-4xl) + env(safe-area-inset-bottom));
  background: var(--color-paper-deep);
  color: var(--color-muted);
}

.footer__statement {
  max-width: 28ch;
  margin-block-end: var(--space-2xl);
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.1;
}

.footer__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-xl);
  padding-block-start: var(--space-xl);
  border-block-start: var(--rule-hair) solid var(--color-rule);
}

.footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm) var(--space-lg);
}

.footer__links a {
  color: var(--color-ink-2);
  font-size: var(--text-sm);
  text-decoration: none;
  white-space: nowrap;
}

.footer__related {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-xs);
}

.footer__related a {
  width: fit-content;
  color: var(--color-muted);
  font-size: var(--text-sm);
  white-space: nowrap;
}

.footer__legal {
  max-width: 72ch;
  margin-block-start: var(--space-xl);
  color: var(--color-subtle);
  font-size: var(--text-sm);
}

.sticky-download {
  position: fixed;
  inset-block-end: 0;
  inset-inline: 0;
  z-index: var(--z-sticky);
  display: flex;
  min-height: 4.75rem;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  padding: var(--space-sm) max(var(--space-md), env(safe-area-inset-right)) calc(var(--space-sm) + env(safe-area-inset-bottom)) max(var(--space-md), env(safe-area-inset-left));
  background: var(--color-nav);
  border-block-start: var(--rule-hair) solid var(--color-rule-strong);
  backdrop-filter: blur(14px) saturate(120%);
}

.sticky-download__copy {
  display: none;
  min-width: 0;
  color: var(--color-muted);
  font-size: var(--text-sm);
}

.sticky-download .btn {
  width: 100%;
}

.reveal {
  opacity: 0;
  transform: translateY(0.5rem);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
  transition: opacity var(--dur-long) var(--ease-out), transform var(--dur-long) var(--ease-out);
}

@media (hover: hover) and (pointer: fine) {
  .nav-link:hover,
  .mobile-menu a:hover {
    color: var(--color-ink);
    background: var(--color-paper-3);
  }

  .btn:hover:not(:disabled):not([aria-disabled="true"]) {
    transform: translateY(-0.1rem);
  }

  .btn--primary:hover::after {
    transform: translateX(430%) skewX(-18deg);
  }

  .feature-card:hover {
    background: var(--color-paper-3);
    transform: translateY(-0.15rem);
  }

  .gallery-trigger:hover img {
    opacity: 0.88;
    transform: scale(1.018);
  }
}

.btn:active:not(:disabled),
.menu-toggle:active,
.tab:active {
  transform: translateY(var(--rule-hair));
}

@media (min-width: 40rem) {
  .nav-links {
    display: flex;
  }

  .menu-toggle {
    display: none;
  }

  .hero-split {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

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

  .info-item:nth-last-child(-n + 2) {
    border-block-end: 0;
  }

  .info-item:nth-child(odd) {
    border-inline-end: var(--rule-hair) solid var(--color-rule);
  }

  .feature-grid,
  .gallery-grid,
  .guide-grid,
  .article-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .feature-card:nth-child(3) {
    grid-column: 1 / -1;
  }

  .gallery-item:first-child {
    grid-column: 1 / -1;
  }

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

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

  .snapshot {
    grid-template-columns: minmax(10rem, 0.35fr) minmax(0, 1fr);
    align-items: center;
  }

  .footer__layout {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  }

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

  .sticky-download__copy {
    display: block;
  }

  .sticky-download .btn {
    width: auto;
    min-width: 11rem;
  }
}

@media (min-width: 60rem) {
  .section-head {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr);
    align-items: end;
  }

  .hero {
    min-height: 46rem;
    display: grid;
    align-items: center;
  }

  .hero h1 {
    font-size: var(--text-display);
  }

  .info-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .info-item,
  .info-item:nth-child(odd) {
    border-block-end: 0;
    border-inline-end: var(--rule-hair) solid var(--color-rule);
  }

  .info-item:last-child {
    border-inline-end: 0;
  }

  .story-layout {
    grid-template-columns: minmax(0, 1.35fr) minmax(18rem, 0.65fr);
  }

  .feature-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .feature-card {
    grid-column: span 2;
  }

  .feature-card:nth-child(3) {
    grid-column: span 2;
  }

  .feature-card:nth-child(4),
  .feature-card:nth-child(5) {
    grid-column: span 3;
  }

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

  .gallery-item:first-child {
    grid-column: span 2;
    grid-row: span 2;
  }

  .gallery-item:first-child .gallery-trigger img {
    aspect-ratio: 16 / 10.65;
  }

  .download-band {
    grid-template-columns: minmax(0, 1fr) minmax(17rem, 0.42fr);
    align-items: center;
  }

  .timeline-item {
    grid-template-columns: 12rem minmax(0, 1fr);
  }

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

  .guide-layout,
  .article-layout {
    grid-template-columns: minmax(15rem, 0.34fr) minmax(0, 1fr);
  }

  .toc {
    position: sticky;
    inset-block-start: 6.5rem;
  }

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

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

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

  *,
  *::before,
  *::after {
    animation-duration: var(--dur-micro) !important;
    animation-iteration-count: 1 !important;
    transition-duration: var(--dur-micro) !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

@media print {
  .nav-pill,
  .sticky-download,
  .mobile-menu,
  .lightbox,
  .btn {
    display: none !important;
  }

  body {
    padding: 0;
    background: var(--color-ink);
    color: var(--color-paper-deep);
  }
}