/* Hallmark · genre: atmospheric · macrostructure: Catalogue · tone: bone-copper
 * theme: Mercantile · nav: N6 Index · footer: Ft8 Stamp
 * enrichment: real DLsite RJ248987 screenshots · axes: dark / geometric-sans / copper
 * pre-emit critique: P4 H4 E5 S5 R4 V5
 */

@import url("./tokens.css");

html,
body {
  overflow-x: clip;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-ink);
  background:
    radial-gradient(ellipse 50% 35% at 80% 0%, oklch(35% 0.06 65 / 0.28), transparent 55%),
    linear-gradient(180deg, var(--color-paper), oklch(11% 0.012 55));
  line-height: 1.7;
}
h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  font-style: normal;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  overflow-wrap: anywhere;
  min-width: 0;
}
a {
  color: var(--color-accent);
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
.shell {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

/* N6 Index */
.site-nav {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  min-height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding: 0 var(--space-lg);
  background: oklch(12% 0.012 55 / 0.92);
  border-bottom: var(--rule) solid var(--color-line);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--color-accent-2);
  text-decoration: none;
  font-family: var(--font-display);
  font-size: var(--text-sm);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.brand img {
  width: 34px;
  height: 34px;
  object-fit: cover;
  border: 1px solid var(--color-line);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  color: var(--color-ink-muted);
  text-decoration: none;
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
}
.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--color-accent);
}
.nav-toggle {
  display: none;
  min-height: 44px;
  padding: 8px 12px;
  border: 1px solid var(--color-line);
  background: transparent;
  color: var(--color-ink);
  cursor: pointer;
}
.nav-toggle:focus-visible,
a:focus-visible,
button:focus-visible,
.btn:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}
@media (max-width: 860px) {
  .nav-toggle {
    display: inline-flex;
    align-items: center;
  }
  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    gap: 0;
    background: var(--color-paper-2);
    border-bottom: 1px solid var(--color-line);
  }
  .nav-links.is-open {
    display: flex;
  }
  .nav-links a {
    padding: 12px var(--space-lg);
    border-top: 1px solid var(--color-line);
  }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.65rem 1.1rem;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-sm);
  font-family: var(--font-display);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  transition: transform var(--dur-fast) var(--ease-out), box-shadow var(--dur-med) var(--ease-out);
}
.btn-primary {
  color: oklch(14% 0.02 55);
  background: var(--color-accent);
  box-shadow: 0 8px 24px oklch(50% 0.1 65 / 0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
}
.btn-secondary {
  color: var(--color-accent-2);
  background: transparent;
  border-color: var(--color-line);
}
.btn-secondary:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}
.btn-ghost {
  border-color: transparent;
  color: var(--color-ink-muted);
  text-decoration: underline;
  text-transform: none;
  letter-spacing: 0;
}

/* Catalogue hero */
.catalogue-hero {
  padding: calc(var(--nav-h) + var(--space-xl)) 0 var(--space-2xl);
}
.catalogue-mast {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: var(--space-xl);
  align-items: end;
  margin-bottom: var(--space-xl);
}
.catalogue-mast .kicker {
  margin: 0 0 var(--space-sm);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-accent);
}
.catalogue-mast h1 {
  margin: 0 0 var(--space-sm);
  font-size: var(--text-display);
}
.catalogue-mast h1 span {
  display: block;
  margin-top: 0.4rem;
  font-family: var(--font-body);
  font-size: clamp(0.95rem, 1.1vw + 0.4rem, 1.15rem);
  font-weight: 500;
  color: var(--color-ink-muted);
  letter-spacing: 0;
  text-transform: none;
}
.lede {
  margin: 0 0 var(--space-lg);
  color: var(--color-ink-muted);
  max-width: 36rem;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}
.catalogue-cover {
  border: 1px solid var(--color-line);
  background: var(--color-paper-3);
  min-width: 0;
  overflow: hidden;
}
.catalogue-cover img {
  width: 100%;
  height: 100%;
  max-height: 420px;
  object-fit: cover;
}
@media (max-width: 860px) {
  .catalogue-mast {
    grid-template-columns: 1fr;
  }
}

.index-strip {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: var(--space-xs);
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
  padding: var(--space-md) 0;
}
.index-strip a {
  color: var(--color-ink-muted);
  text-decoration: none;
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  min-width: 0;
}
.index-strip a strong {
  display: block;
  color: var(--color-accent);
  font-family: var(--font-display);
  margin-bottom: 2px;
}
.index-strip a:hover {
  color: var(--color-ink);
}
@media (max-width: 800px) {
  .index-strip {
    grid-template-columns: 1fr 1fr;
  }
}

.section {
  padding: var(--space-3xl) 0;
}
.section-head {
  margin-bottom: var(--space-xl);
  max-width: 40rem;
}
.section-head .entry-no {
  display: block;
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-xs);
}
.section-head h2 {
  margin: 0 0 var(--space-sm);
  font-size: var(--text-display-s);
}
.section-head p {
  margin: 0;
  color: var(--color-ink-muted);
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-sm);
}
.info-cell {
  background: var(--color-paper-2);
  border: 1px solid var(--color-line);
  padding: var(--space-md);
  min-width: 0;
}
.info-cell dt {
  margin: 0 0 4px;
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
}
.info-cell dd {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  overflow-wrap: anywhere;
}
@media (max-width: 900px) {
  .info-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 480px) {
  .info-grid {
    grid-template-columns: 1fr;
  }
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-sm);
}
.feature-card {
  background: var(--color-paper-2);
  border: 1px solid var(--color-line);
  border-left: 3px solid var(--color-accent);
  padding: var(--space-lg);
  min-width: 0;
  transition: transform var(--dur-med) var(--ease-out), border-color var(--dur-med) var(--ease-out);
}
.feature-card:hover {
  transform: translateY(-3px);
  border-left-color: var(--color-accent-2);
}
.feature-card .mark {
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
}
.feature-card h3 {
  margin: var(--space-sm) 0 var(--space-xs);
  font-size: var(--text-xl);
}
.feature-card p {
  margin: 0;
  color: var(--color-ink-muted);
  font-size: var(--text-sm);
}
@media (max-width: 900px) {
  .feature-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 560px) {
  .feature-grid {
    grid-template-columns: 1fr;
  }
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-sm);
}
.gallery-item {
  aspect-ratio: 16 / 9;
  border: 1px solid var(--color-line);
  overflow: hidden;
  background: var(--color-paper-3);
  cursor: pointer;
  min-width: 0;
  padding: 0;
}
.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--dur-med) var(--ease-out), filter var(--dur-med) var(--ease-out);
}
.gallery-item:hover img {
  transform: scale(1.04);
  filter: brightness(1.06) saturate(1.05);
}
@media (max-width: 800px) {
  .gallery-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.download-band {
  margin: var(--space-xl) 0;
  padding: var(--space-2xl);
  text-align: center;
  border: 1px solid var(--color-accent);
  background: linear-gradient(135deg, oklch(28% 0.05 65 / 0.45), var(--color-paper-2));
}
.download-band h2 {
  margin: 0 0 var(--space-sm);
  font-size: var(--text-4xl);
}
.download-band p {
  margin: 0 0 var(--space-lg);
  color: var(--color-ink-muted);
}

.timeline {
  border-left: 1px solid var(--color-line);
}
.timeline-item {
  position: relative;
  padding: 0 0 var(--space-lg) var(--space-lg);
}
.timeline-item::before {
  content: "";
  position: absolute;
  left: -4px;
  top: 0.45rem;
  width: 7px;
  height: 7px;
  background: var(--color-accent);
}
.timeline-item h3 {
  margin: 0 0 4px;
  font-size: var(--text-md);
}
.timeline-item p {
  margin: 0;
  color: var(--color-ink-muted);
  font-size: var(--text-sm);
}

.review-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-sm);
}
.review-card {
  background: var(--color-paper-2);
  border: 1px solid var(--color-line);
  padding: var(--space-lg);
  min-width: 0;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.45s var(--ease-out), transform 0.45s var(--ease-out);
}
.review-card.visible {
  opacity: 1;
  transform: none;
}
.review-card p {
  margin: 0 0 var(--space-md);
  color: var(--color-ink-muted);
}
.review-card cite {
  font-style: normal;
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
}
@media (max-width: 800px) {
  .review-grid {
    grid-template-columns: 1fr;
  }
}

.faq-list {
  display: grid;
  gap: var(--space-sm);
}
.faq-item {
  border: 1px solid var(--color-line);
  background: var(--color-paper-2);
  overflow: hidden;
}
.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: var(--space-md) var(--space-lg);
  font-weight: 700;
  display: flex;
  justify-content: space-between;
  gap: var(--space-md);
  align-items: center;
  min-height: 44px;
  font-family: var(--font-display);
  letter-spacing: 0.02em;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary::after {
  content: "+";
  color: var(--color-accent);
  flex-shrink: 0;
}
.faq-item[open] summary::after {
  content: "–";
}
.faq-item .faq-body {
  padding: 0 var(--space-lg) var(--space-md);
  color: var(--color-ink-muted);
  overflow-wrap: anywhere;
}

.final-cta {
  text-align: center;
  padding: var(--space-4xl) 0 var(--space-3xl);
}
.final-cta h2 {
  margin: 0 0 var(--space-sm);
  font-size: var(--text-display-s);
}
.final-cta p {
  margin: 0 0 var(--space-lg);
  color: var(--color-ink-muted);
}
.final-cta .note {
  margin-top: var(--space-md);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

/* Ft8 Stamp */
.site-footer {
  border-top: 1px solid var(--color-line);
  padding: var(--space-2xl) 0 var(--space-xl);
  background: var(--color-paper-2);
  font-size: var(--text-xs);
}
.footer-stamp {
  display: grid;
  gap: var(--space-md);
  max-width: 48rem;
}
.footer-stamp .stamp-mark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent-2);
  border: 1px solid var(--color-accent);
  padding: 8px 12px;
  width: fit-content;
}
.footer-stamp .stamp-mark img {
  width: 28px;
  height: 28px;
  object-fit: cover;
  border: 1px solid var(--color-line);
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
}
.footer-links a {
  color: var(--color-ink-muted);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.related-games h3 {
  margin: 0 0 6px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--text-xs);
}
.related-games ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.related-games a {
  color: var(--color-ink-muted);
  text-decoration: none;
}
.footer-legal {
  color: var(--color-ink-muted);
}
.footer-legal p {
  margin: 0 0 2px;
}

.page-hero {
  padding: calc(var(--nav-h) + var(--space-2xl)) 0 var(--space-xl);
}
.page-hero h1 {
  margin: 0 0 var(--space-sm);
  font-size: var(--text-display-s);
}
.page-hero p {
  margin: 0;
  color: var(--color-ink-muted);
  max-width: 42rem;
}
.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-lg);
}
.tab-btn {
  min-height: 44px;
  padding: 0 14px;
  border: 1px solid var(--color-line);
  background: transparent;
  color: var(--color-ink-muted);
  cursor: pointer;
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.tab-btn.is-active,
.tab-btn:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
}
.platform-grid,
.spec-compare,
.guide-grid,
.article-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-sm);
}
.platform-card,
.spec-box,
.guide-card,
.article-link {
  background: var(--color-paper-2);
  border: 1px solid var(--color-line);
  padding: var(--space-lg);
  min-width: 0;
}
.platform-card .badge {
  display: inline-block;
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: oklch(14% 0.02 55);
  background: var(--color-accent);
  padding: 2px 8px;
  margin-bottom: var(--space-sm);
}
.platform-card h2,
.spec-box h3,
.guide-card h3 {
  margin: 0 0 var(--space-sm);
}
.platform-card p,
.guide-card p {
  color: var(--color-ink-muted);
  margin: 0 0 var(--space-lg);
  font-size: var(--text-sm);
}
.article-link {
  display: block;
  color: var(--color-ink);
  text-decoration: none;
}
.article-link:hover {
  border-color: var(--color-accent);
}
.article-link span {
  display: block;
  color: var(--color-ink-muted);
  font-size: var(--text-xs);
  margin-top: 4px;
}
.spec-box table,
.article-body table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}
.spec-box th,
.spec-box td,
.article-body th,
.article-body td {
  text-align: left;
  padding: 8px 6px;
  border-bottom: 1px solid var(--color-line);
  vertical-align: top;
  overflow-wrap: anywhere;
}
.article-body th,
.article-body td {
  border: 1px solid var(--color-line);
  padding: 10px 12px;
}
.article-body th {
  background: var(--color-paper-3);
}
.steps {
  display: grid;
  gap: var(--space-md);
  counter-reset: step;
}
.step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-md);
}
.step::before {
  counter-increment: step;
  content: counter(step);
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  background: var(--color-accent);
  color: oklch(14% 0.02 55);
  font-family: var(--font-display);
  font-weight: 700;
}
@media (max-width: 700px) {
  .platform-grid,
  .spec-compare,
  .guide-grid,
  .article-grid {
    grid-template-columns: 1fr;
  }
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 80;
  background: oklch(6% 0.01 55 / 0.92);
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
}
.lightbox.is-open {
  display: flex;
}
.lightbox img {
  max-width: min(96vw, 1200px);
  max-height: 85vh;
  object-fit: contain;
  border: 1px solid var(--color-line);
}
.lightbox-ui {
  position: absolute;
  inset: auto var(--space-md) var(--space-md);
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
}
.lightbox-close {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
}
.article-body {
  width: min(100% - 2rem, 720px);
  margin: 0 auto;
  padding: 0 0 var(--space-3xl);
}
.article-body h2 {
  font-size: var(--text-4xl);
  margin: var(--space-2xl) 0 var(--space-md);
}
.article-body p,
.article-body li {
  color: var(--color-ink-muted);
}
.crumbs {
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  margin-bottom: var(--space-md);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.crumbs a {
  color: var(--color-ink-muted);
  text-decoration: none;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .feature-card,
  .gallery-item img,
  .review-card,
  .btn-primary {
    transition: none !important;
  }
  .review-card {
    opacity: 1;
    transform: none;
  }
}