/* Hallmark · pre-emit critique: P5 H5 E5 S5 R4 V5
 * macrostructure: Bento Grid · H2 Split Diptych knobs: ratio=7/5, media=reviewed-game-capture, divider=negative-space
 * F1 knobs: tiles=9, spans=mosaic, border=hairline-all · genre: editorial-commerce · tone: warm-technical
 * nav: N1b knobs: links=4, dropdowns=0, scroll=frost-on-scroll · footer: Ft1 Mast-headed
 * theme: custom · vibe: "海盐纸张、乡村旅馆、日系同人商店" · axes: light / roman-serif / cool
 * audience: adult Chinese game-research visitors · use: evaluate, learn, download · contrast: pass · mobile: pass */

:root {
  --color-paper: oklch(98.5% 0.012 95);
  --color-paper-2: oklch(96% 0.018 92);
  --color-paper-3: oklch(92% 0.028 90);
  --color-ink: oklch(22% 0.025 245);
  --color-ink-2: oklch(33% 0.026 240);
  --color-muted: oklch(44% 0.026 225);
  --color-rule: oklch(83% 0.025 90);
  --color-rule-strong: oklch(67% 0.05 87);
  --color-accent: oklch(72% 0.18 14);
  --color-accent-hover: oklch(67% 0.19 14);
  --color-accent-ink: oklch(20% 0.035 20);
  --color-sea: oklch(78% 0.14 230);
  --color-sea-soft: oklch(93% 0.045 225);
  --color-palm: oklch(56% 0.11 153);
  --color-palm-ink: oklch(43% 0.105 153);
  --color-palm-soft: oklch(92% 0.035 153);
  --color-gold: oklch(75% 0.13 85);
  --color-gold-soft: oklch(94% 0.04 85);
  --color-charcoal: oklch(18% 0.015 245);
  --color-charcoal-soft: oklch(25% 0.022 245);
  --color-overlay: oklch(12% 0.018 245 / 0.52);
  --color-overlay-deep: oklch(10% 0.018 245 / 0.82);
  --color-shadow: oklch(22% 0.025 245 / 0.12);
  --color-focus: oklch(38% 0.14 245);
  --color-error: oklch(52% 0.19 28);
  --color-error-soft: oklch(93% 0.035 28);
  --color-success: oklch(47% 0.12 153);
  --color-success-soft: oklch(92% 0.04 153);
  --color-transparent: transparent;

  --font-display: "Noto Serif SC", "Songti SC", serif;
  --font-body: "Noto Sans SC", "PingFang SC", sans-serif;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-md: 1.125rem;
  --text-lg: 1.375rem;
  --text-xl: 1.75rem;
  --text-2xl: 2.25rem;
  --text-3xl: 3rem;
  --text-display-s: clamp(2rem, 8vw, 3.4rem);
  --text-display: clamp(2.25rem, 6vw, 4.8rem);

  --space-3xs: 0.125rem;
  --space-2xs: 0.25rem;
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2.5rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
  --space-4xl: 9rem;

  --page-max: 76rem;
  --page-gutter: clamp(1rem, 4vw, 3rem);
  --nav-height: 4rem;
  --tap-size: 2.75rem;
  --radius-xs: 0.2rem;
  --radius-sm: 0.45rem;
  --radius-md: 0.8rem;
  --radius-lg: 1.25rem;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in: cubic-bezier(0.7, 0, 0.84, 0);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --dur-micro: 120ms;
  --dur-short: 220ms;
  --dur-long: 420ms;

  --z-base: 1;
  --z-raised: 10;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-modal: 400;
  --z-toast: 500;
}

* { box-sizing: border-box; }
html { overflow-x: clip; scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-height) + var(--space-md)); }
body {
  margin: 0;
  overflow-x: clip;
  padding-block-end: calc(4.9rem + env(safe-area-inset-bottom));
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

img, video { display: block; max-width: 100%; }
img { height: auto; }
a { color: inherit; text-decoration-thickness: 0.08em; text-underline-offset: 0.22em; }
button, input, select, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: var(--color-transparent); }
h1, h2, h3, p, figure, blockquote, dl, dd { margin: 0; }
h1, h2, h3 {
  min-width: 0;
  overflow-wrap: anywhere;
  font-family: var(--font-display);
  font-style: normal;
  line-height: 1.14;
  letter-spacing: -0.025em;
}
h1 { font-size: var(--text-display-s); font-weight: 900; }
h2 { font-size: clamp(1.9rem, 5vw, 3.4rem); font-weight: 900; }
h3 { font-size: var(--text-lg); font-weight: 900; }
ul, ol { margin: 0; padding-inline-start: 1.25rem; }
dt { color: var(--color-muted); font-size: var(--text-sm); }
dd { font-weight: 700; }

.skip-link {
  position: fixed;
  inset-block-start: var(--space-xs);
  inset-inline-start: var(--space-xs);
  z-index: var(--z-toast);
  transform: translateY(-140%);
  background: var(--color-charcoal);
  color: var(--color-paper);
  padding: var(--space-sm) var(--space-md);
}
.skip-link:focus { transform: none; }

:focus-visible {
  outline: 0.18rem solid var(--color-focus);
  outline-offset: 0.18rem;
}
.hero :focus-visible,
.section--charcoal :focus-visible,
.download-panel :focus-visible,
.lightbox :focus-visible,
.sticky-download :focus-visible { outline-color: var(--color-gold); }

.shell { width: min(100%, var(--page-max)); margin-inline: auto; padding-inline: var(--page-gutter); }
.section { padding-block: var(--space-2xl); }
.section--tight { padding-block: var(--space-xl); }
.section--paper-2 { background: var(--color-paper-2); color: var(--color-ink); }
.section--charcoal { background: var(--color-charcoal); color: var(--color-paper); }
.section--charcoal .muted, .section--charcoal p { color: var(--color-paper-3); }
.section-head { display: grid; gap: var(--space-md); margin-block-end: var(--space-xl); max-width: 55rem; }
.section-head p { color: var(--color-muted); max-width: 62ch; }
.section--charcoal .section-head p { color: var(--color-paper-3); }
.page-intro { padding-block-start: calc(var(--nav-height) + var(--space-2xl)); }
.link-after-grid { margin-block-start: var(--space-lg); }
.kicker { color: var(--color-palm-ink); font-size: var(--text-sm); font-weight: 900; letter-spacing: 0.08em; }
.muted { color: var(--color-muted); }
.small { font-size: var(--text-sm); }
.tnum { font-variant-numeric: tabular-nums; }

/* Navigation · N1b with a title-card accent rather than a generic SaaS bar. */
.site-nav {
  position: fixed;
  inset: 0 0 auto;
  z-index: var(--z-sticky);
  border-block-end: 0.0625rem solid var(--color-transparent);
  background: color-mix(in oklch, var(--color-paper) 86%, var(--color-transparent));
  transition: transform var(--dur-short) var(--ease-out), background-color var(--dur-short) var(--ease-out), border-color var(--dur-short) var(--ease-out);
}
.site-nav.is-scrolled {
  border-block-end-color: var(--color-rule);
  background: color-mix(in oklch, var(--color-paper) 96%, var(--color-transparent));
  box-shadow: 0 0.25rem 1.25rem var(--color-shadow);
  backdrop-filter: blur(1rem) saturate(130%);
}
.site-nav__inner {
  min-height: var(--nav-height);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--space-sm);
}
.brand { display: inline-flex; align-items: center; gap: var(--space-xs); text-decoration: none; min-width: 0; }
.brand__mark { width: 1.8rem; aspect-ratio: 1; object-fit: cover; border-radius: var(--radius-sm); border: 0.0625rem solid var(--color-rule); }
.brand__name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-family: var(--font-display); font-weight: 900; }
.site-nav__links { display: none; align-items: center; justify-content: center; gap: var(--space-2xs); }
.nav-link, .footer-link, .tab, .btn { white-space: nowrap; }
.nav-link { min-height: var(--tap-size); display: inline-flex; align-items: center; padding-inline: var(--space-sm); color: var(--color-ink-2); text-decoration: none; font-size: var(--text-sm); font-weight: 700; }
.nav-link[aria-current="page"], .nav-link:hover { color: var(--color-palm-ink); }
.site-nav__actions { display: flex; align-items: center; gap: var(--space-xs); justify-self: end; }
.site-nav .site-nav__download { display: none; }
.menu-toggle {
  width: auto;
  height: var(--tap-size);
  padding-inline: var(--space-sm);
  border: 0.0625rem solid var(--color-rule-strong);
  border-radius: var(--radius-sm);
  background: var(--color-paper);
  color: var(--color-ink);
  cursor: pointer;
  line-height: 1;
  white-space: nowrap;
}
.menu-toggle[aria-expanded="true"] { background: var(--color-sea-soft); }
.mobile-menu { border-block-start: 0.0625rem solid var(--color-rule); background: var(--color-paper); }
.mobile-menu[hidden] { display: none; }
.mobile-menu__inner { display: grid; padding-block: var(--space-sm); }
.mobile-menu a { min-height: var(--tap-size); display: flex; align-items: center; padding-inline: var(--space-sm); text-decoration: none; font-weight: 700; }

.btn {
  min-height: var(--tap-size);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  border: 0.0625rem solid var(--color-rule-strong);
  border-radius: var(--radius-sm);
  padding: var(--space-sm) var(--space-lg);
  background: var(--color-paper);
  color: var(--color-ink);
  text-decoration: none;
  font-weight: 900;
  line-height: 1;
  cursor: pointer;
  transition: transform var(--dur-micro) var(--ease-out), background-color var(--dur-short) var(--ease-out), color var(--dur-short) var(--ease-out), border-color var(--dur-short) var(--ease-out);
}
.btn--primary {
  position: relative;
  overflow: clip;
  border-color: var(--color-accent);
  background: var(--color-accent);
  color: var(--color-accent-ink);
}
.btn--primary::after {
  content: "";
  position: absolute;
  inset: -140% auto -140% -42%;
  width: 28%;
  transform: rotate(18deg) translateX(-180%);
  background: color-mix(in oklch, var(--color-paper) 65%, var(--color-transparent));
  pointer-events: none;
}
.btn--large { min-height: 3.5rem; padding-inline: var(--space-xl); font-size: var(--text-md); }
.btn--dark { border-color: var(--color-gold); background: var(--color-gold); color: var(--color-charcoal); }
.btn[aria-disabled="true"], .btn:disabled, .tab:disabled { opacity: 0.5; cursor: not-allowed; }
.btn[data-state="loading"] { cursor: wait; }
.btn[data-state="loading"]::before { content: ""; width: 0.85rem; aspect-ratio: 1; border: 0.125rem solid currentColor; border-inline-end-color: var(--color-transparent); border-radius: 50%; animation: spin 0.9s linear infinite; }
.btn[data-state="error"] { border-color: var(--color-error); background: var(--color-error-soft); color: var(--color-error); }
.btn[data-state="success"] { border-color: var(--color-success); background: var(--color-success-soft); color: var(--color-success); }

/* Hero: one reviewed image, dimmed with a factual store ledger beside it. */
.hero {
  position: relative;
  min-height: 44rem;
  display: grid;
  align-items: end;
  padding-block: var(--space-xl) var(--space-2xl);
  background: var(--color-charcoal);
  color: var(--color-paper);
  isolation: isolate;
}
.hero__backdrop { position: absolute; inset: 0; z-index: -2; overflow: clip; }
.hero__backdrop img { width: 100%; height: 100%; object-fit: cover; transform: scale(1.03); animation: hero-breathe 18s var(--ease-in-out) alternate infinite; }
.hero__backdrop::after { content: ""; position: absolute; inset: 0; background: var(--color-overlay); }
.hero__grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: var(--space-lg); align-items: end; padding-block-start: var(--nav-height); }
.hero__stage { position: relative; min-width: 0; align-self: stretch; display: grid; align-content: end; }
.hero__dialogue {
  max-width: 45rem;
  border: 0.0625rem solid var(--color-gold);
  border-radius: var(--radius-md);
  background: var(--color-overlay-deep);
  color: var(--color-paper);
  padding: var(--space-md) var(--space-lg);
  box-shadow: 0 0.75rem 2rem var(--color-shadow);
}
.hero__speaker { color: var(--color-gold); font-size: var(--text-sm); font-weight: 900; }
.hero__line { margin-block-start: var(--space-xs); font-size: var(--text-md); line-height: 1.55; }
.hero__choices { display: flex; flex-wrap: wrap; gap: var(--space-xs); margin-block-start: var(--space-md); }
.choice { min-height: var(--tap-size); display: inline-flex; align-items: center; border: 0.0625rem solid var(--color-sea); background: color-mix(in oklch, var(--color-charcoal) 82%, var(--color-transparent)); padding-inline: var(--space-md); text-decoration: none; font-weight: 700; line-height: 1; white-space: nowrap; }
.hero__panel {
  min-width: 0;
  border: 0.0625rem solid color-mix(in oklch, var(--color-gold) 62%, var(--color-transparent));
  border-radius: var(--radius-lg);
  background: color-mix(in oklch, var(--color-charcoal) 91%, var(--color-transparent));
  padding: var(--space-lg);
  box-shadow: 0 1rem 2.5rem var(--color-shadow);
}
.hero__title-en { display: block; margin-block-start: var(--space-xs); color: var(--color-paper-3); font-family: var(--font-body); font-size: var(--text-md); font-weight: 500; letter-spacing: 0; }
.hero__lede { margin-block-start: var(--space-md); color: var(--color-paper-2); max-width: 50ch; }
.tag-row { display: flex; flex-wrap: wrap; gap: var(--space-xs); margin-block-start: var(--space-md); }
.tag { display: inline-flex; align-items: center; min-height: 2rem; padding-inline: var(--space-sm); border: 0.0625rem solid color-mix(in oklch, var(--color-paper) 34%, var(--color-transparent)); border-radius: var(--radius-xs); color: var(--color-paper-2); font-size: var(--text-sm); }
.hero__facts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-sm); margin-block-start: var(--space-lg); }
.hero__facts > div { border-block-start: 0.0625rem solid color-mix(in oklch, var(--color-paper) 28%, var(--color-transparent)); padding-block-start: var(--space-xs); }
.hero__facts dt { color: var(--color-paper-3); }
.hero__actions { display: grid; grid-template-columns: minmax(0, 1fr); gap: var(--space-sm); margin-block-start: var(--space-lg); }
.trust-line { margin-block-start: var(--space-sm); color: var(--color-paper-3); font-size: var(--text-sm); }

.info-bar { position: relative; z-index: var(--z-raised); margin-block-start: calc(var(--space-lg) * -1); }
.info-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border: 0.0625rem solid var(--color-rule); background: var(--color-paper); box-shadow: 0 0.5rem 1.6rem var(--color-shadow); }
.info-grid > div { min-width: 0; padding: var(--space-md); border-block-end: 0.0625rem solid var(--color-rule); }
.info-grid dd { overflow-wrap: anywhere; }

.story-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: var(--space-xl); }
.prose { display: grid; gap: var(--space-md); max-width: 68ch; }
.prose p { color: var(--color-ink-2); }
.story-figure { margin: 0; align-self: start; }
.story-figure img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; border: 0.0625rem solid var(--color-rule); border-radius: var(--radius-sm); }
.story-figure figcaption { padding-block-start: var(--space-sm); color: var(--color-muted); font-size: var(--text-sm); }

.bento { display: grid; grid-template-columns: minmax(0, 1fr); gap: var(--space-md); }
.tile {
  min-width: 0;
  border: 0.0625rem solid var(--color-rule);
  border-radius: var(--radius-md);
  background: var(--color-paper);
  padding: var(--space-lg);
  transition: transform var(--dur-short) var(--ease-out), box-shadow var(--dur-short) var(--ease-out), border-color var(--dur-short) var(--ease-out);
}
.tile p { margin-block-start: var(--space-sm); color: var(--color-muted); }
.tile__mark { display: inline-flex; align-items: center; justify-content: center; min-width: 2.4rem; height: 2.4rem; margin-block-end: var(--space-lg); border: 0.0625rem solid var(--color-gold); color: var(--color-charcoal); background: var(--color-gold-soft); font-weight: 900; }
.tile--sea { background: var(--color-sea-soft); color: var(--color-ink); }
.tile--palm { background: var(--color-palm-soft); color: var(--color-ink); }
.tile--dark { background: var(--color-charcoal); color: var(--color-paper); border-color: var(--color-charcoal-soft); }
.tile--dark p { color: var(--color-paper-3); }
.tile--media { padding: 0; overflow: clip; }
.tile--media img { width: 100%; height: 100%; min-height: 15rem; object-fit: cover; }

.gallery-preview, .gallery-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: var(--space-md); }
.gallery-item { min-width: 0; margin: 0; }
.gallery-button { width: 100%; padding: 0; border: 0.0625rem solid var(--color-rule); border-radius: var(--radius-sm); background: var(--color-paper-2); color: var(--color-ink); cursor: zoom-in; overflow: clip; }
.gallery-button img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; transition: transform var(--dur-short) var(--ease-out), filter var(--dur-short) var(--ease-out); }
.gallery-item figcaption { margin-block-start: var(--space-xs); color: var(--color-muted); font-size: var(--text-sm); }
.gallery-tabs { display: flex; flex-wrap: wrap; gap: var(--space-xs); margin-block-end: var(--space-xl); }
.tab { min-height: var(--tap-size); border: 0.0625rem solid var(--color-rule-strong); border-radius: var(--radius-xs); background: var(--color-paper); color: var(--color-ink); padding-inline: var(--space-md); cursor: pointer; font-weight: 700; line-height: 1; }
.tab[aria-selected="true"] { border-color: var(--color-palm); background: var(--color-palm); color: var(--color-accent-ink); }
.gallery-item[hidden] { display: none; }

.lightbox { position: fixed; inset: 0; width: min(94%, 76rem); height: fit-content; max-height: 90dvh; margin: auto; border: 0; padding: 0; background: var(--color-charcoal); color: var(--color-paper); box-shadow: 0 1rem 4rem var(--color-shadow); }
.lightbox::backdrop { background: var(--color-overlay-deep); }
.lightbox__figure { display: grid; max-height: 90dvh; }
.lightbox__image { width: 100%; max-height: 78dvh; object-fit: contain; }
.lightbox__bar { display: flex; align-items: center; justify-content: space-between; gap: var(--space-sm); padding: var(--space-sm); }
.lightbox__caption { color: var(--color-paper-2); }
.icon-button { min-width: var(--tap-size); min-height: var(--tap-size); border: 0.0625rem solid var(--color-rule-strong); background: var(--color-charcoal-soft); color: var(--color-paper); cursor: pointer; line-height: 1; }
.lightbox__controls { display: flex; gap: var(--space-xs); }

.timeline { display: grid; gap: var(--space-md); }
.timeline__item { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: var(--space-md); padding-block: var(--space-lg); border-block-start: 0.0625rem solid var(--color-rule); }
.timeline__date { color: var(--color-palm-ink); font-weight: 900; font-variant-numeric: tabular-nums; }
.timeline__body ul { margin-block-start: var(--space-sm); color: var(--color-muted); }

.audience-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: var(--space-md); }
.audience-card { border-block-start: 0.18rem solid var(--color-gold); padding-block: var(--space-lg); }
.audience-card p { margin-block-start: var(--space-sm); color: var(--color-muted); }

.accordion { display: grid; border-block-start: 0.0625rem solid var(--color-rule); }
.accordion details { border-block-end: 0.0625rem solid var(--color-rule); }
.accordion summary { min-height: 3.5rem; display: flex; align-items: center; justify-content: space-between; gap: var(--space-md); cursor: pointer; font-weight: 900; list-style: none; }
.accordion summary::-webkit-details-marker { display: none; }
.accordion summary::after { content: "+"; flex: 0 0 auto; font-size: var(--text-lg); color: var(--color-palm-ink); }
.accordion details[open] summary::after { content: "−"; }
.accordion__body { padding-block: 0 var(--space-lg); color: var(--color-muted); max-width: 70ch; }

.download-panel { display: grid; gap: var(--space-lg); border: 0.0625rem solid var(--color-gold); background: var(--color-charcoal); color: var(--color-paper); padding: var(--space-xl); }
.download-panel p { color: var(--color-paper-3); }
.download-panel__meta { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-md); }
.download-panel__meta > div { border-block-start: 0.0625rem solid var(--color-charcoal-soft); padding-block-start: var(--space-xs); }
.download-panel__meta dt { color: var(--color-paper-3); }

.platform-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: var(--space-md); }
.platform-card { border: 0.0625rem solid var(--color-rule); background: var(--color-paper); padding: var(--space-xl); }
.platform-card--recommended { border-color: var(--color-gold); box-shadow: inset 0 0.25rem 0 var(--color-gold); }
.platform-card__label { color: var(--color-palm-ink); font-size: var(--text-sm); font-weight: 900; }
.platform-card p { margin-block: var(--space-sm) var(--space-lg); color: var(--color-muted); }

.steps { display: grid; gap: var(--space-md); list-style: none; padding: 0; counter-reset: install; }
.steps li { position: relative; padding: var(--space-lg); border: 0.0625rem solid var(--color-rule); background: var(--color-paper); }
.steps li::before { counter-increment: install; content: counter(install, decimal-leading-zero); display: block; margin-block-end: var(--space-lg); color: var(--color-palm); font-size: var(--text-xl); font-weight: 900; font-variant-numeric: tabular-nums; }
.steps p { margin-block-start: var(--space-sm); color: var(--color-muted); }

.spec-list { display: grid; border-block-start: 0.0625rem solid var(--color-rule); }
.spec-list > div { display: grid; grid-template-columns: minmax(0, 1fr); gap: var(--space-xs); padding-block: var(--space-md); border-block-end: 0.0625rem solid var(--color-rule); }
.spec-list dd { overflow-wrap: anywhere; }

.guide-layout { display: grid; grid-template-columns: minmax(0, 1fr); gap: var(--space-xl); }
.toc { border: 0.0625rem solid var(--color-rule); background: var(--color-paper-2); padding: var(--space-lg); }
.toc strong { display: block; margin-block-end: var(--space-sm); }
.toc nav { display: grid; }
.toc a { min-height: var(--tap-size); display: flex; align-items: center; color: var(--color-ink-2); text-decoration: none; }
.guide-article { display: grid; gap: var(--space-2xl); }
.guide-section { display: grid; gap: var(--space-md); scroll-margin-top: calc(var(--nav-height) + var(--space-md)); }
.guide-section p, .guide-section li { color: var(--color-ink-2); }
.guide-section ul, .guide-section ol { display: grid; gap: var(--space-xs); }
.guide-table { width: 100%; border-collapse: collapse; }
.guide-table th, .guide-table td { padding: var(--space-sm); border-block-end: 0.0625rem solid var(--color-rule); text-align: start; vertical-align: top; }
.guide-table th { color: var(--color-muted); font-size: var(--text-sm); }

.final-cta { text-align: start; background: var(--color-sea-soft); color: var(--color-ink); }
.final-cta__inner { display: grid; gap: var(--space-lg); align-items: end; }
.final-cta p { color: var(--color-muted); max-width: 60ch; }
.final-cta__actions { display: flex; flex-wrap: wrap; gap: var(--space-sm); }

.footer { border-block-start: 0.0625rem solid var(--color-rule); background: var(--color-paper-2); color: var(--color-ink); padding-block: var(--space-2xl); }
.footer__mast { display: grid; gap: var(--space-xl); }
.footer__brand { max-width: 34rem; }
.footer__brand .brand { margin-block-end: var(--space-md); }
.footer__links { display: grid; grid-template-columns: minmax(0, 1fr); gap: var(--space-lg); }
.footer__group { display: grid; align-content: start; gap: var(--space-xs); }
.footer__group strong { font-family: var(--font-display); }
.footer-link { width: fit-content; min-height: 2rem; display: inline-flex; align-items: center; color: var(--color-muted); text-decoration: none; }
.footer__legal { display: grid; gap: var(--space-xs); padding-block-start: var(--space-lg); border-block-start: 0.0625rem solid var(--color-rule); color: var(--color-muted); font-size: var(--text-sm); }

.sticky-download {
  position: fixed;
  inset: auto 0 0;
  z-index: var(--z-sticky);
  background: color-mix(in oklch, var(--color-charcoal) 96%, var(--color-transparent));
  color: var(--color-paper);
  border-block-start: 0.0625rem solid var(--color-gold);
  padding: var(--space-sm) max(var(--space-md), env(safe-area-inset-right)) max(var(--space-sm), env(safe-area-inset-bottom)) max(var(--space-md), env(safe-area-inset-left));
}
.sticky-download__inner { display: flex; align-items: center; justify-content: space-between; gap: var(--space-sm); max-width: var(--page-max); margin-inline: auto; }
.sticky-download__copy { display: none; }
.sticky-download .btn { flex: 1; }

.back-to-top { position: fixed; inset: auto var(--space-md) calc(5.3rem + env(safe-area-inset-bottom)); z-index: var(--z-sticky); width: var(--tap-size); height: var(--tap-size); border: 0.0625rem solid var(--color-rule-strong); background: var(--color-paper); color: var(--color-ink); cursor: pointer; opacity: 0; pointer-events: none; transform: translateY(var(--space-xs)); transition: opacity var(--dur-short) var(--ease-out), transform var(--dur-short) var(--ease-out); }
.back-to-top.is-visible { opacity: 1; pointer-events: auto; transform: none; }

@keyframes hero-breathe { to { transform: scale(1.05); } }
@keyframes spin { to { transform: rotate(1turn); } }

@media (hover: hover) and (pointer: fine) {
  .btn:hover { transform: translateY(-0.09rem); }
  .btn:active { transform: translateY(0.0625rem); }
  .btn--primary:hover { background: var(--color-accent-hover); }
  .btn--primary:hover::after { animation: sheen 0.8s var(--ease-out); }
  .tile:hover { transform: translateY(-0.14rem); border-color: var(--color-rule-strong); box-shadow: 0 0.5rem 1rem var(--color-shadow); }
  .gallery-button:hover img { transform: scale(1.018); filter: saturate(1.05); }
  .footer-link:hover { color: var(--color-palm-ink); }
}
@keyframes sheen { to { transform: rotate(18deg) translateX(640%); } }

@media (min-width: 40rem) {
  .hero__actions { grid-template-columns: max-content max-content; }
  .info-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .bento { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .tile--wide { grid-column: span 2; }
  .gallery-preview, .gallery-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .audience-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .platform-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .steps { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .footer__links { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .sticky-download__copy { display: block; min-width: 0; }
  .sticky-download__copy strong, .sticky-download__copy span { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .sticky-download__copy span { color: var(--color-paper-3); font-size: var(--text-sm); }
  .sticky-download .btn { flex: 0 0 auto; }
}

@media (min-width: 48rem) {
  .gallery-preview, .gallery-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .audience-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .footer__mast { grid-template-columns: minmax(0, 1.2fr) minmax(0, 1.8fr); }
  .footer__links { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .final-cta__inner { grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.6fr); }
  .final-cta__actions { justify-content: flex-end; }
}

@media (min-width: 60rem) {
  .section { padding-block: var(--space-3xl); }
  .site-nav__inner { grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr); }
  .site-nav__links { display: flex; }
  .site-nav__actions { grid-column: 3; }
  .site-nav .site-nav__download { display: inline-flex; }
  .menu-toggle { display: none; }
  .mobile-menu { display: none; }
  .hero { min-height: 47rem; padding-block-end: var(--space-3xl); }
  .hero__grid { grid-template-columns: minmax(0, 7fr) minmax(22rem, 5fr); gap: var(--space-xl); }
  .hero__dialogue { margin-block-end: var(--space-md); }
  .info-grid { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .info-grid > div { border-inline-end: 0.0625rem solid var(--color-rule); border-block-end: 0; }
  .story-grid { grid-template-columns: minmax(0, 6.5fr) minmax(0, 5.5fr); align-items: start; }
  .bento { grid-template-columns: repeat(4, minmax(0, 1fr)); grid-auto-rows: minmax(12rem, auto); }
  .tile--wide { grid-column: span 2; }
  .tile--tall { grid-row: span 2; }
  .tile--large { grid-column: span 2; grid-row: span 2; }
  .guide-layout { grid-template-columns: minmax(13rem, 0.7fr) minmax(0, 2.3fr); align-items: start; }
  .toc { position: sticky; inset-block-start: calc(var(--nav-height) + var(--space-md)); }
  .spec-list > div { grid-template-columns: minmax(10rem, 0.7fr) minmax(0, 1.3fr); }
}

@media (min-width: 90rem) {
  .hero__panel { padding: var(--space-xl); }
}

@media (pointer: coarse) {
  .btn, .nav-link, .footer-link, .tab, .menu-toggle, .icon-button { min-height: 3rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 150ms !important; }
  .hero__backdrop img { transform: none; animation: none; }
}

@media print {
  .site-nav, .sticky-download, .back-to-top, .hero__actions, .final-cta { display: none !important; }
  body { padding-block-end: 0; }
  .hero { min-height: auto; color: var(--color-ink); background: var(--color-paper); }
  .hero__backdrop { display: none; }
  .hero__panel, .hero__dialogue { color: var(--color-ink); background: var(--color-paper); box-shadow: none; }
}