/* Hallmark · macrostructure: Split Studio · H2 ratio=7/5, proof=store-media, divider=negative-space
 * theme: custom · vibe: "deep-space store, shrine vermilion, domestic suspense" · paper: oklch(22% 0.025 247) · accent: oklch(79% 0.185 123)
 * display: Noto Serif SC · body: Noto Sans SC · axes: dark / roman-serif / chromatic-green
 * nav: N10 morph · footer: Ft1 mast-headed · contrast: pass (40–41) · slop: pass (42–45)
 * honest: pass (46) · chrome: pass (47) · tokens: pass (48) · responsive: pass (49) · mobile: pass (34, 49, 50–57) · icons: pass (30)
 * slop-test: 57/58 · gate 13 retained for user-requested lift+shadow and zoom+brighten hover pairs
 * states: complete · studied: no · context: explicit · v1.1.0
 * Hallmark · pre-emit critique: P5 H5 E4 S5 R5 V5
 */
@import url("../../tokens.css");

* { box-sizing: border-box; }
html, body { margin: 0; overflow-x: clip; }
html { color-scheme: dark; scroll-behavior: smooth; scroll-padding-top: calc(var(--banner-height) + var(--space-md)); }
body {
  min-width: 20rem;
  background: var(--color-paper-2);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.65;
  padding-bottom: var(--space-4xl);
}
img, video { display: block; max-width: 100%; }
img { height: auto; }
a { color: var(--color-link); text-underline-offset: 0.22em; }
button, a { -webkit-tap-highlight-color: transparent; }
button, input { font: inherit; }
button { line-height: 1; }
h1, h2, h3, p, figure, dl, dd, ul, ol { margin-top: 0; }
h1, h2, h3 { color: var(--color-ink); font-family: var(--font-display); font-style: normal; line-height: 1.18; overflow-wrap: anywhere; min-width: 0; }
h1 { font-size: var(--text-display); letter-spacing: -0.04em; margin-bottom: var(--space-lg); }
h2 { font-size: clamp(2rem, 4vw, var(--text-3xl)); letter-spacing: -0.03em; margin-bottom: var(--space-md); }
h3 { font-size: var(--text-lg); margin-bottom: var(--space-sm); }
p { max-width: 68ch; }
::selection { background: var(--color-vermilion); color: var(--color-ink); }

.skip-link { position: fixed; inset-block-start: var(--space-xs); inset-inline-start: var(--space-xs); z-index: var(--z-overlay); transform: translateY(-160%); background: var(--color-ink); color: var(--color-paper-2); padding: var(--space-sm) var(--space-md); }
.skip-link:focus { transform: translateY(0); }
.shell { width: min(78rem, 100%); margin-inline: auto; padding-inline: clamp(var(--space-md), 4vw, var(--space-2xl)); }
.section { padding-block: var(--space-3xl); }
.section--panel { background: var(--color-paper); color: var(--color-ink); }
.section--deep { background: var(--color-panel); color: var(--color-ink); }
.section-head { display: grid; gap: var(--space-sm); margin-bottom: var(--space-2xl); max-width: 52rem; }
.section-head p { color: var(--color-ink-2); font-size: var(--text-md); }
.eyebrow { color: var(--color-vermilion-soft); font-family: var(--font-body); font-size: var(--text-xs); letter-spacing: 0.12em; text-transform: uppercase; }
.muted { color: var(--color-muted); }
.tnum { font-variant-numeric: tabular-nums; }

.site-nav { position: fixed; inset-block-start: 0; inset-inline: 0; z-index: var(--z-sticky-nav); height: var(--banner-height); pointer-events: none; }
.nav-inner {
  width: 100%; height: var(--banner-height); margin-inline: auto; padding-inline: clamp(var(--space-md), 4vw, var(--space-2xl));
  display: flex; align-items: center; gap: var(--space-lg); background: var(--color-panel); border-bottom: var(--rule-thin) solid var(--color-rule-2);
  transition: transform var(--dur-medium) var(--ease-in-out), background-color var(--dur-medium) var(--ease-in-out), max-width var(--dur-medium) var(--ease-in-out);
  pointer-events: auto;
}
.site-nav.is-floating .nav-inner { max-width: 68rem; transform: translateY(var(--space-sm)); background: var(--color-paper); border: var(--rule-thin) solid var(--color-rule); box-shadow: 0 0.75rem 2rem var(--color-shadow); }
.brand { display: inline-flex; align-items: baseline; gap: var(--space-xs); color: var(--color-ink); font-family: var(--font-display); font-weight: 900; text-decoration: none; white-space: nowrap; }
.brand small { color: var(--color-muted); font-family: var(--font-body); font-size: var(--text-xs); font-weight: 400; }
.nav-links { display: none; margin-inline-start: auto; align-items: center; gap: var(--space-lg); }
.nav-links a { color: var(--color-ink-2); text-decoration: none; white-space: nowrap; }
.nav-links a[aria-current="page"], .nav-links a:hover { color: var(--color-link); }
.menu-toggle { margin-inline-start: auto; width: auto; min-height: 2.75rem; padding-inline: var(--space-md); border: var(--rule-thin) solid var(--color-rule); background: var(--color-paper-3); color: var(--color-ink); cursor: pointer; white-space: nowrap; }
.nav-inner > .button { display: none; }
.mobile-menu { position: absolute; inset-block-start: calc(var(--banner-height) + var(--space-md)); inset-inline: var(--space-md); display: grid; gap: var(--space-2xs); padding: var(--space-md); background: var(--color-paper); border: var(--rule-thin) solid var(--color-rule); box-shadow: 0 1rem 2rem var(--color-shadow); pointer-events: auto; }
.mobile-menu[hidden] { display: none; }
.mobile-menu a { min-height: 2.75rem; display: flex; align-items: center; color: var(--color-ink); text-decoration: none; border-bottom: var(--rule-thin) solid var(--color-rule-2); white-space: nowrap; }

.button {
  --button-shadow: 0 0.25rem 0 var(--color-accent-ink);
  position: relative; isolation: isolate; min-height: 2.75rem; display: inline-flex; align-items: center; justify-content: center; gap: var(--space-xs);
  padding: var(--space-sm) var(--space-lg); border: var(--rule-thin) solid var(--color-accent); border-radius: var(--radius-sm);
  background: var(--color-accent); color: var(--color-accent-ink); box-shadow: var(--button-shadow); font-weight: 900; text-decoration: none; white-space: nowrap; overflow: hidden;
  transition: transform var(--dur-fast) var(--ease-out), background-color var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out);
  cursor: pointer;
}
.button::after { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(105deg, transparent 30%, var(--color-shine) 48%, transparent 66%); transform: translateX(-130%); transition: transform var(--dur-slow) var(--ease-out); }
.button:hover { background: var(--color-accent-hover); }
.button:hover::after { transform: translateX(130%); }
.button:focus-visible, button:focus-visible, summary:focus-visible, a:focus-visible { outline: var(--rule-strong) solid var(--color-focus); outline-offset: 3px; }
.button:focus-visible { outline-color: var(--color-accent-ink); box-shadow: 0 0 0 var(--rule-focus-outer) var(--color-focus); }
.button:active, .button.is-active { transform: translateY(2px); box-shadow: 0 0.125rem 0 var(--color-accent-ink); }
.button[aria-disabled="true"], .button:disabled, .button.is-disabled { opacity: 0.52; cursor: not-allowed; pointer-events: none; }
.button[data-state="loading"], .button.is-loading { color: transparent; cursor: wait; }
.button[data-state="loading"]::before, .button.is-loading::before { content: ""; position: absolute; width: 1rem; height: 1rem; border: var(--rule-strong) solid var(--color-accent-ink); border-inline-end-color: transparent; border-radius: 50%; animation: spin var(--dur-slow) linear infinite; }
.button[data-state="error"], .button.is-error { background: var(--color-error); color: var(--color-accent-ink); }
.button[data-state="success"], .button.is-success { background: var(--color-success); color: var(--color-accent-ink); }
.button--outline { background: transparent; color: var(--color-link); border-color: var(--color-link); box-shadow: none; }
.button--outline:hover { background: var(--color-paper-3); }
.button--large { min-height: 3.5rem; padding-inline: var(--space-xl); font-size: var(--text-md); }
@keyframes spin { to { transform: rotate(360deg); } }
button:active { transform: translateY(2px); }
button:disabled, button[aria-disabled="true"] { opacity: 0.52; cursor: not-allowed; }

.hero { min-height: calc(100svh - var(--banner-height)); margin-top: var(--banner-height); padding-block: var(--space-xl) var(--space-3xl); display: grid; align-items: end; background-color: var(--color-panel); background-image: linear-gradient(135deg, var(--color-panel), var(--color-paper-2)); color: var(--color-ink); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: var(--space-xl); }
.hero-media { min-width: 0; }
.media-main { position: relative; aspect-ratio: 16 / 9; overflow: clip; background: var(--color-paper); border: var(--rule-thin) solid var(--color-rule); }
.media-main img, .media-main video { width: 100%; height: 100%; object-fit: cover; }
.media-main::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 55%, var(--color-panel)); pointer-events: none; }
.media-caption { position: absolute; z-index: var(--z-base); inset-inline: var(--space-md); inset-block-end: var(--space-md); color: var(--color-ink); font-size: var(--text-sm); }
.thumb-strip { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--space-xs); margin-top: var(--space-xs); }
.thumb { padding: 0; border: var(--rule-thin) solid var(--color-rule); background: var(--color-paper); cursor: pointer; aspect-ratio: 16 / 9; overflow: hidden; }
.thumb[aria-pressed="true"] { border-color: var(--color-link); }
.thumb img { width: 100%; height: 100%; object-fit: cover; }
.hero-copy { min-width: 0; display: flex; flex-direction: column; justify-content: flex-end; }
.hero-logo { width: min(100%, 28rem); max-height: 8rem; object-fit: contain; object-position: left center; margin-bottom: var(--space-sm); }
.hero h1 { font-size: clamp(2.25rem, 5vw, 4.5rem); margin-bottom: var(--space-sm); }
.hero-lede { color: var(--color-ink-2); font-size: var(--text-md); line-height: 1.6; }
.tag-row { display: flex; flex-wrap: wrap; gap: var(--space-xs); margin-block: var(--space-md); }
.tag { padding: var(--space-2xs) var(--space-sm); border-inline-start: var(--rule-strong) solid var(--color-vermilion); background: var(--color-paper-3); color: var(--color-ink-2); font-size: var(--text-sm); }
.hero-actions { display: flex; flex-wrap: wrap; gap: var(--space-sm); margin-block: var(--space-sm); }
.buy-box { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border: var(--rule-thin) solid var(--color-rule); margin-top: var(--space-md); }
.buy-box div { padding: var(--space-xs); border-inline-end: var(--rule-thin) solid var(--color-rule-2); border-block-end: var(--rule-thin) solid var(--color-rule-2); }
.buy-box dt { color: var(--color-muted); font-size: var(--text-xs); }
.buy-box dd { margin: 0; color: var(--color-ink); font-family: var(--font-body); font-size: var(--text-sm); }

.info-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border: var(--rule-thin) solid var(--color-rule); }
.info-grid div { min-width: 0; padding: var(--space-md); border-inline-end: var(--rule-thin) solid var(--color-rule-2); border-block-end: var(--rule-thin) solid var(--color-rule-2); }
.info-grid dt { color: var(--color-muted); font-size: var(--text-sm); }
.info-grid dd { margin: var(--space-2xs) 0 0; font-weight: 700; overflow-wrap: anywhere; }

.split-flow { display: grid; grid-template-columns: minmax(0, 1fr); gap: var(--space-xl); align-items: start; }
.sticky-heading { max-width: 32rem; }
.story-copy p { font-size: var(--text-md); color: var(--color-ink-2); }
.feature-list { display: grid; gap: var(--space-sm); }
.feature-card { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: var(--space-md); padding: var(--space-lg); background: var(--color-paper-3); border-block-start: var(--rule-thin) solid var(--color-rule); transition: transform var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out); }
.feature-card b { font-family: var(--font-body); color: var(--color-link); }
.feature-card p { margin: 0; color: var(--color-ink-2); }
.feature-card:hover { transform: translateY(-2px); box-shadow: 0 0.75rem 1.5rem var(--color-shadow); }

.gallery-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: var(--space-md); }
.gallery-card { position: relative; padding: 0; border: var(--rule-thin) solid var(--color-rule); background: var(--color-panel); color: var(--color-ink); cursor: pointer; text-align: start; overflow: clip; }
.gallery-card[hidden] { display: none; }
.gallery-card img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; transition: transform var(--dur-medium) var(--ease-out), opacity var(--dur-fast) var(--ease-out); }
.gallery-card span { display: block; padding: var(--space-sm); white-space: normal; }
.gallery-card:hover img { transform: scale(1.025); opacity: 0.9; }
.filter-tabs { display: flex; flex-wrap: wrap; gap: var(--space-xs); margin-bottom: var(--space-xl); }
.filter-tabs button { min-height: 2.75rem; padding: var(--space-xs) var(--space-md); border: var(--rule-thin) solid var(--color-rule); background: var(--color-paper-3); color: var(--color-ink); cursor: pointer; white-space: nowrap; }
.filter-tabs button[aria-pressed="true"] { background: var(--color-vermilion); border-color: var(--color-vermilion); }

.spec-table { width: 100%; border-collapse: collapse; }
.spec-table th, .spec-table td { padding: var(--space-md); border-bottom: var(--rule-thin) solid var(--color-rule); text-align: start; vertical-align: top; }
.spec-table th { color: var(--color-muted); font-weight: 400; }
.spec-table td { color: var(--color-ink); }
.steps { list-style: none; padding: 0; display: grid; gap: var(--space-md); counter-reset: step; }
.steps li { display: grid; grid-template-columns: 3.25rem minmax(0, 1fr); gap: var(--space-md); padding-block: var(--space-lg); border-bottom: var(--rule-thin) solid var(--color-rule); counter-increment: step; }
.steps li::before { content: "0" counter(step); color: var(--color-link); font-family: var(--font-body); font-weight: 700; }
.steps p { margin: 0; color: var(--color-ink-2); }

.timeline { border-inline-start: var(--rule-strong) solid var(--color-vermilion); padding-inline-start: var(--space-lg); }
.timeline article { position: relative; padding-bottom: var(--space-xl); }
.timeline article::before { content: ""; position: absolute; inline-size: var(--space-sm); block-size: var(--space-sm); inset-inline-start: calc((var(--space-lg) + var(--space-sm)) * -1); inset-block-start: var(--space-xs); background: var(--color-vermilion); }
.timeline time { color: var(--color-link); font-family: var(--font-body); font-size: var(--text-sm); }
.timeline p { color: var(--color-ink-2); }

.audience-grid, .platform-grid, .guide-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: var(--space-md); }
.audience-card, .platform-card, .guide-card { padding: var(--space-lg); background: var(--color-paper-3); border-block-start: var(--rule-strong) solid var(--color-rule); }
.platform-card.is-primary, .guide-card:hover { border-block-start-color: var(--color-vermilion); }
.platform-card dl div { display: flex; justify-content: space-between; gap: var(--space-md); padding-block: var(--space-xs); border-bottom: var(--rule-thin) solid var(--color-rule-2); }
.platform-card dd { margin: 0; text-align: end; }
.guide-card a { white-space: nowrap; }

.accordion { border-top: var(--rule-thin) solid var(--color-rule); }
.accordion-item { border-bottom: var(--rule-thin) solid var(--color-rule); }
.accordion-item h3 { margin: 0; }
.accordion-trigger { width: 100%; min-height: 3.75rem; display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: var(--space-md); align-items: center; padding: var(--space-md) 0; border: 0; background: transparent; color: var(--color-ink); cursor: pointer; text-align: start; }
.accordion-trigger span { color: var(--color-link); font-family: var(--font-body); }
.accordion-panel { padding: 0 0 var(--space-lg); color: var(--color-ink-2); }
.accordion-panel[hidden] { display: none; }

.final-cta { display: grid; gap: var(--space-lg); align-items: center; padding-block: var(--space-3xl); border-block: var(--rule-thin) solid var(--color-rule); }
.final-cta p { color: var(--color-ink-2); }
.footer { padding-block: var(--space-3xl) calc(var(--space-3xl) + var(--space-2xl)); background: var(--color-panel); color: var(--color-ink); }
.footer-mast { display: grid; gap: var(--space-xl); }
.footer-brand img { width: min(18rem, 80%); max-height: 6rem; object-fit: contain; object-position: left center; }
.footer-brand p { color: var(--color-muted); }
.footer-links, .related-links { display: flex; flex-wrap: wrap; gap: var(--space-sm) var(--space-lg); }
.footer-links a, .related-links a { white-space: nowrap; }
.footer-legal { padding-top: var(--space-xl); border-top: var(--rule-thin) solid var(--color-rule); color: var(--color-muted); font-size: var(--text-sm); }

.sticky-cta { position: fixed; z-index: var(--z-cta); inset-inline: 0; inset-block-end: 0; min-height: 4.5rem; 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)); display: flex; align-items: center; justify-content: space-between; gap: var(--space-md); background: var(--color-panel); color: var(--color-ink); border-top: var(--rule-thin) solid var(--color-rule); box-shadow: 0 -0.75rem 2rem var(--color-shadow); }
.sticky-cta span { min-width: 0; }
.sticky-cta strong, .sticky-cta small { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sticky-cta small { color: var(--color-muted); }
.back-top { position: fixed; z-index: var(--z-cta); inset-inline-end: var(--space-md); inset-block-end: var(--space-4xl); min-width: 2.75rem; min-height: 2.75rem; border: var(--rule-thin) solid var(--color-rule); background: var(--color-paper); color: var(--color-ink); opacity: 0; pointer-events: none; cursor: pointer; }
.back-top.is-visible { opacity: 1; pointer-events: auto; }

.lightbox { position: fixed; inset: 0; margin: auto; width: min(94%, 78rem); height: fit-content; max-height: 92svh; padding: var(--space-md); border: var(--rule-thin) solid var(--color-rule); background: var(--color-panel); color: var(--color-ink); overflow: auto; }
.lightbox::backdrop { background: var(--color-backdrop); }
.lightbox figure { margin: 0; }
.lightbox img { width: 100%; max-height: 74svh; object-fit: contain; }
.lightbox-toolbar { display: flex; justify-content: space-between; gap: var(--space-md); align-items: center; margin-bottom: var(--space-sm); }
.lightbox-toolbar p { margin: 0; }
.icon-button { min-width: 2.75rem; min-height: 2.75rem; border: var(--rule-thin) solid var(--color-rule); background: var(--color-paper); color: var(--color-ink); cursor: pointer; }
.lightbox-nav { display: flex; justify-content: space-between; gap: var(--space-md); margin-top: var(--space-sm); }

.page-hero { padding-block: calc(var(--banner-height) + var(--space-3xl)) var(--space-3xl); background: var(--color-panel); }
.page-hero-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: var(--space-xl); align-items: center; }
.page-hero img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; border: var(--rule-thin) solid var(--color-rule); }
.toc { position: sticky; top: calc(var(--banner-height) + var(--space-lg)); padding: var(--space-md); background: var(--color-paper); border: var(--rule-thin) solid var(--color-rule); }
.toc a { display: block; min-height: 2.75rem; padding-block: var(--space-xs); color: var(--color-ink-2); text-decoration: none; }
.guide-body article { padding-block: var(--space-xl); border-bottom: var(--rule-thin) solid var(--color-rule); }
.guide-body li { margin-bottom: var(--space-xs); }
.callout { padding: var(--space-lg); border-inline-start: var(--rule-strong) solid var(--color-vermilion); background: var(--color-paper-3); }

@media (min-width: 40rem) {
  .nav-inner > .button { display: inline-flex; }
  .info-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .gallery-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .audience-grid, .guide-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .platform-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .final-cta { grid-template-columns: minmax(0, 1fr) auto; }
  .page-hero-grid { grid-template-columns: 7fr 5fr; }
}

@media (min-width: 60rem) {
  .nav-links { display: flex; }
  .menu-toggle { display: none; }
  .hero-grid { grid-template-columns: 7fr 5fr; }
  .hero-media { order: 0; }
  .hero-copy { order: 1; }
  .split-flow { grid-template-columns: minmax(16rem, 5fr) minmax(0, 7fr); gap: var(--space-3xl); }
  .sticky-heading { position: sticky; top: calc(var(--banner-height) + var(--space-xl)); }
  .info-grid { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .gallery-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .gallery-card--wide { grid-column: span 2; }
  .audience-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .guide-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-mast { grid-template-columns: minmax(16rem, 1.2fr) minmax(0, 2fr); }
  .footer-legal { grid-column: 1 / -1; }
}

@media (hover: hover) and (pointer: fine) {
  .thumb:hover { border-color: var(--color-link); }
  .filter-tabs button:hover { background: var(--color-paper); }
}

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