/* Hallmark · macrostructure: Photographic · H6 hero knobs: full-bleed, lower-left annotation, 78dvh
 * genre: playful · theme: custom · vibe: "樱花泳池、雾白、靛蓝导航、亮橙行动" · nav: N7 Brutal slab · footer: Ft3 Index
 * display: Bricolage Grotesque · body: Noto Sans SC · axes: light / geometric-sans / warm
 * enrichment: E8 real game still · pre-emit critique: P5 H5 E5 S5 R5 V5 · contrast: pass (40–41) · mobile: pass (34, 49, 50–57) · slop: pass (42–45)
 */
@import url("../../tokens.css");

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: clip; background: var(--color-paper); }
body {
  margin: 0;
  min-width: 20rem;
  overflow-x: clip;
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.65;
  font-synthesis: none;
  padding-block-end: calc(var(--sticky-cta-height) + env(safe-area-inset-bottom));
}
img, video { display: block; max-width: 100%; }
img { height: auto; }
a { color: inherit; text-underline-offset: 0.2em; }
a:active { text-decoration-thickness: var(--rule-strong); }
a[aria-disabled="true"], summary[aria-disabled="true"] { opacity: 0.5; cursor: not-allowed; pointer-events: none; }
button, input, select { font: inherit; }
button, a, summary { -webkit-tap-highlight-color: transparent; }
h1, h2, h3, p, dl, dd, figure, blockquote { margin: 0; }
h1, h2, h3 {
  font-family: var(--font-display);
  font-style: normal;
  line-height: 1.06;
  letter-spacing: -0.028em;
  overflow-wrap: anywhere;
  min-width: 0;
}
h1 { font-size: var(--text-display); font-weight: 800; }
h2 { font-size: clamp(2rem, 5vw, 4rem); font-weight: 800; }
h3 { font-size: var(--text-xl); font-weight: 700; }
p { max-width: 68ch; }
ul, ol { margin-block: 0; padding-inline-start: 1.25rem; }
summary { list-style: none; }
summary::-webkit-details-marker { display: none; }

.skip-link {
  position: fixed;
  inset-block-start: var(--space-sm);
  inset-inline-start: var(--space-sm);
  z-index: var(--z-tooltip);
  transform: translateY(-180%);
  background: var(--color-indigo);
  color: var(--color-overlay-text);
  padding: var(--space-sm) var(--space-md);
}
.skip-link:focus { transform: none; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.section-shell { width: min(100% - (var(--page-gutter) * 2), var(--content-max)); margin-inline: auto; }
.section-pad { padding-block: var(--space-3xl); }
.section-pad--tight { padding-block: var(--space-2xl); }
.head-hang { display: grid; gap: var(--space-md); padding-block-end: var(--space-xl); }
.head-hang p { color: var(--color-muted); font-size: var(--text-md); }
.muted { color: var(--color-muted); }
.tnum { font-variant-numeric: tabular-nums; }
.mobile-only { display: initial; }

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

.site-header {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  z-index: var(--z-sticky);
}
.promo {
  min-height: var(--promo-height);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-xs) var(--page-gutter);
  background: var(--color-pink);
  color: var(--color-maple-deep);
  font-size: var(--text-sm);
  font-weight: 700;
  text-align: center;
}
.promo span { display: block; min-width: 0; max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.nav-slab {
  min-height: var(--nav-height);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-sm) var(--page-gutter);
  border-block-end: var(--rule-strong) solid var(--color-indigo);
  background: var(--color-indigo);
  color: var(--color-overlay-text);
}
.slab-mark {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  min-height: 2.75rem;
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1;
  letter-spacing: 0.03em;
  text-decoration: none;
  white-space: nowrap;
}
.slab-mark img { width: 2.25rem; height: 2.25rem; object-fit: cover; border-radius: var(--radius-xs); }
.slab-nav { display: none; }
.slab-nav ul { display: flex; align-items: center; gap: var(--space-lg); list-style: none; padding: 0; margin: 0; }
.slab-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: var(--text-sm);
  font-weight: 700;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
}
.slab-nav a[aria-current="page"], .slab-nav a:hover { color: var(--color-orange); }
.nav-download { margin-inline-start: auto; }
.nav-toggle {
  display: grid;
  place-items: center;
  width: 2.75rem;
  height: 2.75rem;
  margin-inline-start: auto;
  border: var(--rule-hair) solid var(--color-rule);
  background: var(--color-indigo-2);
  color: var(--color-overlay-text);
  cursor: pointer;
}
.nav-toggle span, .nav-toggle::before, .nav-toggle::after {
  content: "";
  display: block;
  width: 1.25rem;
  height: var(--rule-strong);
  background: currentColor;
}
.nav-toggle { gap: var(--space-2xs); }
.mobile-sheet {
  display: none;
  background: var(--color-indigo);
  color: var(--color-overlay-text);
  border-block-end: var(--rule-strong) solid var(--color-orange);
  padding: var(--space-md) var(--page-gutter) var(--space-lg);
}
.mobile-sheet.is-open { display: grid; gap: var(--space-xs); }
.mobile-sheet a {
  display: flex;
  align-items: center;
  min-height: 2.75rem;
  line-height: 1;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
}

.btn {
  position: relative;
  isolation: isolate;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  min-height: 2.875rem;
  border: var(--rule-strong) solid var(--color-indigo);
  padding: var(--space-sm) var(--space-lg);
  background: var(--color-paper);
  color: var(--color-indigo);
  font-weight: 800;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  overflow: hidden;
  transition: background-color var(--dur-short) var(--ease-out), color var(--dur-short) var(--ease-out), transform var(--dur-micro) var(--ease-out), opacity var(--dur-micro) var(--ease-out);
}
.btn--primary { background: var(--color-orange); color: var(--color-orange-ink); border-color: var(--color-orange-deep); }
.btn--dark { background: var(--color-indigo); color: var(--color-overlay-text); border-color: var(--color-indigo); }
.btn--quiet { background: var(--color-paper); color: var(--color-ink); border-color: var(--color-rule); }
.btn--large { min-height: 3.5rem; padding-inline: var(--space-xl); font-size: var(--text-md); }
.btn::after {
  content: "";
  position: absolute;
  inset-block: 0;
  inset-inline-start: -35%;
  z-index: -1;
  width: 24%;
  transform: skewX(-18deg) translateX(-250%);
  background: linear-gradient(90deg, color-mix(in oklch, var(--color-paper) 0%, transparent), color-mix(in oklch, var(--color-paper) 78%, transparent), color-mix(in oklch, var(--color-paper) 0%, transparent));
}
@media (hover: hover) and (pointer: fine) {
  .btn:hover { transform: translateY(-1px); }
  .btn--quiet:hover { background: var(--color-paper-2); }
  .btn:hover::after { animation: sheen var(--dur-long) var(--ease-out) 1; }
}
.btn:active { transform: translateY(1px); }
.btn[aria-disabled="true"], .btn:disabled { opacity: 0.5; cursor: not-allowed; pointer-events: none; }
.btn[data-state="loading"] { cursor: progress; }
.btn[data-state="success"] { background: var(--color-success); color: var(--color-overlay-text); border-color: var(--color-success); }
.btn[data-state="error"] { background: var(--color-error); color: var(--color-overlay-text); border-color: var(--color-error); }
.btn:focus-visible::after { animation: sheen var(--dur-long) var(--ease-out) 1; }
@keyframes sheen { to { transform: skewX(-18deg) translateX(800%); } }
button[aria-disabled="true"], button:disabled { opacity: 0.5; cursor: not-allowed; }
button[data-state="loading"] { cursor: progress; }
button[data-state="success"] { border-color: var(--color-success); }
button[data-state="error"] { border-color: var(--color-error); }

main { padding-block-start: calc(var(--promo-height) + var(--nav-height)); }
.hero-photo {
  position: relative;
  min-height: clamp(38rem, 78dvh, 52rem);
  display: grid;
  align-items: end;
  isolation: isolate;
  overflow: clip;
  background: var(--color-indigo);
  color: var(--color-overlay-text);
}
.hero-photo__image { position: absolute; inset: 0; z-index: -3; width: 100%; height: 100%; object-fit: cover; object-position: center 38%; }
.hero-photo::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  background: linear-gradient(90deg, color-mix(in oklch, var(--color-overlay) 78%, transparent), color-mix(in oklch, var(--color-overlay) 48%, transparent));
}
.hero-photo::after {
  content: "";
  position: absolute;
  inset: 45% 0 0;
  z-index: -1;
  background: linear-gradient(0deg, color-mix(in oklch, var(--color-overlay) 86%, transparent), color-mix(in oklch, var(--color-overlay) 0%, transparent));
}
.hero-photo__content {
  width: min(100% - (var(--page-gutter) * 2), var(--content-max));
  margin-inline: auto;
  padding-block: var(--space-2xl) var(--space-3xl);
  display: grid;
  gap: var(--space-lg);
}
.hero-tags, .hero-actions, .data-row { display: flex; flex-wrap: wrap; gap: var(--space-sm); }
.tag {
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  padding-inline: var(--space-sm);
  border: var(--rule-hair) solid var(--color-rule);
  background: color-mix(in oklch, var(--color-overlay) 70%, transparent);
  color: var(--color-overlay-text);
  font-size: var(--text-sm);
  font-weight: 700;
  white-space: nowrap;
}
.hero-photo h1 { max-width: 14ch; }
.hero-photo__lede { max-width: 46rem; font-size: clamp(1.05rem, 2.5vw, 1.35rem); line-height: 1.55; }
.data-row { gap: 0; border-block: var(--rule-hair) solid color-mix(in oklch, var(--color-rule) 48%, transparent); }
.data-point { min-width: 9.5rem; padding: var(--space-md) var(--space-lg) var(--space-md) 0; }
.data-point + .data-point { padding-inline-start: var(--space-lg); border-inline-start: var(--rule-hair) solid color-mix(in oklch, var(--color-rule) 48%, transparent); }
.data-point strong { display: block; font-family: var(--font-display); font-size: var(--text-md); }
.data-point span { display: block; color: var(--color-rule-2); font-size: var(--text-sm); }
.petal { position: absolute; z-index: -1; width: 0.55rem; height: 0.35rem; border-radius: 80% 20% 70% 30%; background: var(--color-pink); opacity: 0.32; animation: petal-drift 14s var(--ease-in-out) infinite; }
.petal:nth-child(1) { inset-block-start: 12%; inset-inline-start: 12%; }
.petal:nth-child(2) { inset-block-start: 28%; inset-inline-start: 78%; animation-delay: -4s; }
.petal:nth-child(3) { inset-block-start: 54%; inset-inline-start: 88%; animation-delay: -8s; }
.petal:nth-child(4) { inset-block-start: 64%; inset-inline-start: 24%; animation-delay: -11s; }
@keyframes petal-drift { 50% { transform: translate3d(1.5rem, 2.5rem, 0) rotate(160deg); } }

.info-strip { position: relative; z-index: var(--z-raised); margin-block-start: calc(var(--space-xl) * -1); }
.info-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border: var(--rule-strong) solid var(--color-indigo); background: var(--color-paper); }
.info-item { min-width: 0; padding: var(--space-lg); border-block-end: var(--rule-hair) solid var(--color-rule-2); }
.info-item:nth-child(odd) { border-inline-end: var(--rule-hair) solid var(--color-rule-2); }
.info-item dt { color: var(--color-muted); font-size: var(--text-sm); }
.info-item dd { margin-block-start: var(--space-2xs); font-weight: 800; overflow-wrap: anywhere; }

.story-layout { display: grid; gap: var(--space-xl); }
.story-copy { display: grid; gap: var(--space-lg); font-size: var(--text-md); line-height: 1.8; }
.story-note { align-self: end; padding: var(--space-lg); background: var(--color-pink); color: var(--color-maple-deep); font-weight: 700; }
.story-photo { margin-block-start: var(--space-2xl); }
.story-photo img { width: 100%; aspect-ratio: 16 / 6; object-fit: cover; object-position: center; }
.story-photo figcaption { padding-block-start: var(--space-sm); color: var(--color-muted); font-size: var(--text-sm); }

.feature-led { display: grid; gap: var(--space-lg); }
.feature-main, .feature-card { min-width: 0; border: var(--rule-hair) solid var(--color-rule); background: var(--color-paper); }
.feature-main { display: grid; }
.feature-main img { width: 100%; height: 100%; min-height: 18rem; object-fit: cover; }
.feature-main__copy { padding: var(--space-xl); display: grid; align-content: center; gap: var(--space-md); }
.feature-main__copy p, .feature-card p { color: var(--color-muted); }
.feature-small { display: grid; gap: var(--space-md); }
.feature-card { padding: var(--space-lg); display: grid; gap: var(--space-sm); transition: transform var(--dur-short) var(--ease-out); }
.feature-card__mark { display: inline-flex; align-items: center; justify-content: center; width: 2.5rem; height: 2.5rem; border: var(--rule-strong) solid var(--color-blue-deep); color: var(--color-blue-deep); font-weight: 800; }
@media (hover: hover) and (pointer: fine) { .feature-card:hover { transform: translateY(-2px); } }
.feature-card:focus-within { transform: translateY(-2px); }

.shop-band { background: var(--color-paper-2); }
.filter-tabs { display: flex; flex-wrap: wrap; gap: var(--space-xs); margin-block-end: var(--space-xl); }
.tab-button {
  min-height: 2.75rem;
  border: var(--rule-hair) solid var(--color-rule);
  padding-inline: var(--space-md);
  background: var(--color-paper);
  color: var(--color-ink);
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
  white-space: nowrap;
}
.tab-button[aria-selected="true"] { background: var(--color-indigo); color: var(--color-overlay-text); border-color: var(--color-indigo); }
.tab-button:active { transform: translateY(1px); }
.tab-button:disabled { opacity: 0.5; cursor: not-allowed; }
.tab-button[data-state="loading"] { cursor: progress; }
.tab-button[data-state="error"] { border-color: var(--color-error); }
.tab-button[data-state="success"] { border-color: var(--color-success); }
.gallery-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: var(--space-lg); }
.gallery-card { min-width: 0; display: grid; gap: var(--space-sm); }
.gallery-card[hidden] { display: none; }
.gallery-button { width: 100%; border: 0; padding: 0; background: var(--color-paper-3); cursor: zoom-in; overflow: hidden; }
.gallery-button img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; transition: transform var(--dur-long) var(--ease-out), filter var(--dur-short) var(--ease-out); }
.gallery-card h3 { font-family: var(--font-body); font-size: var(--text-md); letter-spacing: 0; }
.gallery-card p { color: var(--color-muted); font-size: var(--text-sm); }
@media (hover: hover) and (pointer: fine) { .gallery-button:hover img { transform: scale(1.02); filter: brightness(1.05); } }
.gallery-button:active img { transform: scale(1); }
.gallery-button:disabled { opacity: 0.5; cursor: not-allowed; }

.media-split { display: grid; gap: var(--space-xl); align-items: center; }
.trailer-frame { position: relative; display: block; border: var(--rule-strong) solid var(--color-indigo); background: var(--color-indigo); overflow: hidden; }
.trailer-frame img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.trailer-frame__play { position: absolute; inset: 50% auto auto 50%; transform: translate(-50%, -50%); min-width: 8rem; }
.media-copy { display: grid; gap: var(--space-lg); }

.spec-sheet { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
.spec-sheet th, .spec-sheet td { padding: var(--space-md) 0; border-block-end: var(--rule-hair) solid var(--color-rule); text-align: start; vertical-align: top; }
.spec-sheet th { width: 28%; font-weight: 700; }
.spec-sheet td:last-child { color: var(--color-muted); }

.timeline { display: grid; gap: 0; }
.timeline article { position: relative; display: grid; grid-template-columns: 6.5rem minmax(0, 1fr); gap: var(--space-lg); padding-block: var(--space-lg); border-block-end: var(--rule-hair) solid var(--color-rule); }
.timeline time { font-variant-numeric: tabular-nums; font-weight: 800; color: var(--color-blue-deep); }
.timeline h3 { font-size: var(--text-lg); }
.timeline p { margin-block-start: var(--space-sm); color: var(--color-muted); }

.review-summary { display: grid; gap: var(--space-sm); padding: var(--space-xl); background: var(--color-indigo); color: var(--color-overlay-text); margin-block-end: var(--space-xl); }
.review-summary strong { font-family: var(--font-display); font-size: clamp(2.5rem, 8vw, 5rem); line-height: 1; font-variant-numeric: tabular-nums; }
.review-summary small { color: var(--color-rule-2); }
.review-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: var(--space-lg); }
.review-card { min-width: 0; padding: var(--space-xl); border-block-start: var(--rule-strong) solid var(--color-blue-deep); background: var(--color-paper); }
.reviews-pending .review-card { opacity: 0; transform: translateY(var(--space-xs)); }
.reviews-pending.reviews-ready .review-card { animation: review-in var(--dur-long) var(--ease-out) both; }
.reviews-ready .review-card:nth-child(2) { animation-delay: 100ms; }
.reviews-ready .review-card:nth-child(3) { animation-delay: 200ms; }
@keyframes review-in { to { opacity: 1; transform: none; } }
.review-card blockquote { font-size: var(--text-md); line-height: 1.75; }
.review-card footer { margin-block-start: var(--space-lg); color: var(--color-muted); font-size: var(--text-sm); }

.accordion { display: grid; 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; min-height: 4rem; display: flex; align-items: center; padding: var(--space-md) 3rem var(--space-md) 0; font-weight: 800; cursor: pointer; }
.accordion summary::after { content: "+"; position: absolute; inset-inline-end: var(--space-sm); font-family: var(--font-display); font-size: var(--text-xl); }
.accordion details[open] summary::after { content: "−"; }
.accordion .answer { padding-block: 0 var(--space-lg); color: var(--color-muted); }
.accordion summary:active { color: var(--color-blue-deep); }
.accordion details[data-state="error"] { border-color: var(--color-error); }
.accordion details[data-state="success"] { border-color: var(--color-success); }

.download-panel { display: grid; gap: var(--space-xl); padding: var(--space-xl); border: var(--rule-strong) solid var(--color-indigo); background: var(--color-paper-2); }
.download-panel__facts { display: grid; gap: var(--space-md); }
.download-panel__facts div { display: flex; justify-content: space-between; gap: var(--space-lg); border-block-end: var(--rule-hair) solid var(--color-rule); padding-block-end: var(--space-sm); }
.download-panel__facts dt { color: var(--color-muted); }
.download-panel__facts dd { text-align: end; font-weight: 800; }
.platform-grid { display: grid; gap: var(--space-lg); }
.platform-card { position: relative; min-width: 0; padding: var(--space-xl); border: var(--rule-strong) solid var(--color-indigo); display: grid; align-content: start; gap: var(--space-md); background: var(--color-paper); }
.platform-card--recommended { background: var(--color-paper-2); }
.recommend-label { position: absolute; inset-block-start: 0; inset-inline-end: 0; padding: var(--space-xs) var(--space-sm); background: var(--color-indigo); color: var(--color-overlay-text); font-size: var(--text-xs); font-weight: 800; }
.step-list { counter-reset: steps; display: grid; gap: 0; list-style: none; padding: 0; }
.step-list li { counter-increment: steps; display: grid; grid-template-columns: 3rem minmax(0, 1fr); gap: var(--space-md); padding-block: var(--space-lg); border-block-end: var(--rule-hair) solid var(--color-rule); }
.step-list li::before { content: counter(steps, decimal-leading-zero); font-family: var(--font-display); font-size: var(--text-lg); font-weight: 800; color: var(--color-maple); }
.step-list strong { display: block; }
.step-list p { margin-block-start: var(--space-xs); color: var(--color-muted); }
.notice { padding: var(--space-lg); background: var(--color-pink); color: var(--color-maple-deep); }

.guide-layout { display: grid; gap: var(--space-2xl); }
.toc { align-self: start; background: var(--color-indigo); color: var(--color-overlay-text); padding: var(--space-lg); }
.toc h2 { font-size: var(--text-xl); }
.toc ol { display: grid; gap: var(--space-xs); margin-block-start: var(--space-md); }
.toc a { white-space: nowrap; }
.guide-copy { min-width: 0; display: grid; gap: var(--space-3xl); }
.guide-copy article { display: grid; gap: var(--space-lg); scroll-margin-top: calc(var(--promo-height) + var(--nav-height) + var(--space-lg)); }
.guide-copy h2 { font-size: clamp(1.9rem, 4vw, 3.3rem); }
.guide-copy h3 { font-size: var(--text-lg); }
.guide-copy p, .guide-copy li { max-width: 72ch; }
.guide-copy ul, .guide-copy ol { display: grid; gap: var(--space-sm); }
.guide-cards { display: grid; gap: var(--space-lg); }
.guide-card { min-width: 0; padding: var(--space-lg); border: var(--rule-hair) solid var(--color-rule); display: grid; gap: var(--space-sm); text-decoration: none; }
.guide-card strong { font-family: var(--font-display); font-size: var(--text-lg); }
.guide-card span { color: var(--color-muted); }
.guide-card:hover, .guide-card:focus-visible { background: var(--color-paper-2); }
.compare-table-wrap { overflow-x: auto; }
.compare-table { min-width: 36rem; width: 100%; border-collapse: collapse; }
.compare-table th, .compare-table td { border-block-end: var(--rule-hair) solid var(--color-rule); padding: var(--space-md); text-align: start; vertical-align: top; }
.compare-table thead { background: var(--color-indigo); color: var(--color-overlay-text); }

.article-hero { padding-block: var(--space-3xl) var(--space-2xl); background: var(--color-paper-2); }
.article-hero__inner { display: grid; gap: var(--space-lg); }
.article-hero h1 { max-width: 18ch; font-size: var(--text-display-s); }
.article-meta { display: flex; flex-wrap: wrap; gap: var(--space-md); color: var(--color-muted); font-size: var(--text-sm); }
.article-copy { width: min(100% - (var(--page-gutter) * 2), 50rem); margin-inline: auto; display: grid; gap: var(--space-2xl); }
.article-copy section { display: grid; gap: var(--space-lg); }
.article-copy h2 { font-size: clamp(1.8rem, 4vw, 3rem); }
.article-copy h3 { font-size: var(--text-lg); }

.final-cta { background: var(--color-indigo); color: var(--color-overlay-text); }
.final-cta__inner { display: grid; gap: var(--space-xl); align-items: end; }
.final-cta__copy { display: grid; gap: var(--space-md); }
.final-cta__copy p { color: var(--color-rule-2); }
.fine-print { font-size: var(--text-sm); color: var(--color-rule-2); }

.site-footer { background: var(--color-indigo-2); color: var(--color-overlay-text); padding-block: var(--space-2xl); }
.footer-intro { display: grid; gap: var(--space-sm); padding-block-end: var(--space-xl); border-block-end: var(--rule-hair) solid color-mix(in oklch, var(--color-rule) 42%, transparent); }
.footer-intro strong { font-family: var(--font-display); font-size: var(--text-xl); }
.footer-index { display: grid; grid-template-columns: minmax(0, 1fr); gap: var(--space-xl); padding-block: var(--space-xl); }
.footer-index h2 { font-family: var(--font-body); font-size: var(--text-sm); letter-spacing: 0.08em; text-transform: uppercase; }
.footer-index ul { display: grid; gap: var(--space-xs); list-style: none; padding: 0; margin-block-start: var(--space-md); }
.footer-index a { color: var(--color-rule-2); line-height: 1; text-decoration: none; }
.footer-index a:hover { color: var(--color-orange); }
.footer-legal { display: grid; gap: var(--space-sm); color: var(--color-rule-2); font-size: var(--text-sm); }

.sticky-cta {
  position: fixed;
  inset-inline: 0;
  inset-block-end: 0;
  z-index: var(--z-sticky);
  min-height: var(--sticky-cta-height);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-sm) max(var(--page-gutter), env(safe-area-inset-right)) calc(var(--space-sm) + env(safe-area-inset-bottom)) max(var(--page-gutter), env(safe-area-inset-left));
  background: var(--color-paper);
  color: var(--color-ink);
  border-block-start: var(--rule-strong) solid var(--color-indigo);
}
.sticky-cta span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.back-top {
  position: fixed;
  inset-inline-end: var(--space-md);
  inset-block-end: calc(var(--sticky-cta-height) + var(--space-md) + env(safe-area-inset-bottom));
  z-index: var(--z-sticky);
  width: 2.75rem;
  height: 2.75rem;
  border: var(--rule-hair) solid var(--color-rule);
  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-top.is-visible { opacity: 1; pointer-events: auto; transform: none; }

.lightbox {
  position: fixed;
  inset: 0;
  width: min(94%, 76rem);
  height: fit-content;
  max-height: 88dvh;
  margin: auto;
  padding: 0;
  border: 0;
  background: var(--color-indigo);
  color: var(--color-overlay-text);
  overflow: auto;
}
.lightbox::backdrop { background: color-mix(in oklch, var(--color-overlay) 84%, transparent); }
.lightbox figure { display: grid; }
.lightbox img { width: 100%; max-height: 72dvh; object-fit: contain; background: var(--color-indigo); }
.lightbox figcaption { padding: var(--space-md) 4rem var(--space-md) var(--space-md); }
.lightbox-controls { position: absolute; inset-inline: var(--space-sm); inset-block-start: 50%; display: flex; justify-content: space-between; pointer-events: none; }
.lightbox button { pointer-events: auto; width: 2.75rem; height: 2.75rem; border: var(--rule-hair) solid var(--color-rule); background: var(--color-paper); color: var(--color-ink); cursor: pointer; }
.lightbox-close { position: absolute; inset-block-start: var(--space-sm); inset-inline-end: var(--space-sm); z-index: var(--z-raised); }
.lightbox button:active { transform: translateY(1px); }
.lightbox button:disabled { opacity: 0.5; cursor: not-allowed; }

@media (min-width: 40rem) {
  .mobile-only { display: none; }
  .info-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .info-item:nth-child(odd) { border-inline-end: 0; }
  .info-item:not(:nth-child(3n)) { border-inline-end: var(--rule-hair) solid var(--color-rule-2); }
  .story-layout { grid-template-columns: minmax(0, 1.45fr) minmax(14rem, 0.55fr); }
  .feature-main { grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr); }
  .feature-small { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .gallery-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .media-split { grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr); }
  .review-summary { grid-template-columns: auto minmax(0, 1fr); align-items: end; column-gap: var(--space-xl); }
  .review-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .platform-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .guide-cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .final-cta__inner { grid-template-columns: minmax(0, 1fr) auto; }
  .footer-index { grid-template-columns: 0.8fr 1fr 1.6fr; }
}

@media (min-width: 60rem) {
  .slab-nav { display: block; margin-inline-start: auto; }
  .nav-toggle, .mobile-sheet { display: none !important; }
  .nav-download { margin-inline-start: 0; }
  .hero-photo__content { padding-block-end: var(--space-4xl); }
  .info-grid { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .info-item:not(:nth-child(3n)) { border-inline-end: 0; }
  .info-item:not(:last-child) { border-inline-end: var(--rule-hair) solid var(--color-rule-2); }
  .feature-led { grid-template-columns: minmax(0, 1.35fr) minmax(20rem, 0.65fr); }
  .feature-main { grid-template-columns: minmax(0, 1fr); }
  .feature-small { grid-template-columns: minmax(0, 1fr); }
  .gallery-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .guide-layout { grid-template-columns: 18rem minmax(0, 1fr); }
  .toc { position: sticky; inset-block-start: calc(var(--promo-height) + var(--nav-height) + var(--space-lg)); }
}

@media (min-width: 90rem) {
  .gallery-grid--wide { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

@media (max-width: 39.99rem) {
  .promo { font-size: var(--text-xs); }
  .slab-mark span { max-width: 9rem; overflow: hidden; text-overflow: ellipsis; }
  .nav-download { display: none; }
  .hero-photo { min-height: 42rem; }
  .hero-photo__content { padding-block-start: var(--space-xl); }
  .hero-actions { flex-wrap: nowrap; }
  .hero-actions .btn { min-width: 0; padding-inline: var(--space-sm); font-size: var(--text-sm); }
  .data-point { min-width: 50%; padding-inline-end: var(--space-sm); }
  .data-point + .data-point { padding-inline-start: var(--space-sm); }
  .data-point:nth-child(3) { border-inline-start: 0; }
  .data-point:nth-child(n+3) { border-block-start: var(--rule-hair) solid color-mix(in oklch, var(--color-rule) 48%, transparent); }
  .section-pad { padding-block: var(--space-2xl); }
  .story-photo img { aspect-ratio: 4 / 3; }
  .timeline article { grid-template-columns: 1fr; gap: var(--space-xs); }
  .sticky-cta > span { font-size: var(--text-sm); }
  .sticky-cta .btn { padding-inline: var(--space-md); }
  .spec-sheet, .spec-sheet tbody, .spec-sheet tr, .spec-sheet th, .spec-sheet td { display: block; width: 100%; }
  .spec-sheet tr { padding-block: var(--space-md); border-block-end: var(--rule-hair) solid var(--color-rule); }
  .spec-sheet th, .spec-sheet td { border: 0; padding: var(--space-2xs) 0; }
  .spec-sheet td::before { content: attr(data-label) "："; font-weight: 700; color: var(--color-ink); }
}

@media (pointer: coarse) {
  .btn, .tab-button, .nav-toggle, .lightbox button, .back-top { min-height: 2.75rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 150ms !important; animation-iteration-count: 1 !important; transition-duration: 150ms !important; }
  .hero-photo__content, .review-card { opacity: 1; transform: none; animation: none !important; }
  .petal { animation: none !important; }
}