/* Hallmark · genre: atmospheric · macrostructure: Bento Grid · tone: lab-terminal
 * theme: Terminal · nav: N8 Terminal · footer: Ft4 Dense typographic
 * enrichment: real DLsite product images · axes: dark / mono / phosphor-green
 * 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% 40% at 100% 0%, oklch(35% 0.12 145 / 0.2), transparent 55%),
    linear-gradient(180deg, var(--color-paper), oklch(11% 0.02 150));
  line-height: 1.7;
}
h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  font-style: normal;
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
  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;
}

/* N8 Terminal */
.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(10% 0.02 150 / 0.92);
  border-bottom: var(--rule) solid var(--color-accent);
  font-family: var(--font-mono);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--color-accent);
  text-decoration: none;
  font-size: var(--text-sm);
  letter-spacing: 0.04em;
}
.brand img {
  width: 32px;
  height: 32px;
  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: 0.06em;
  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-accent);
  cursor: pointer;
  font-family: var(--font-mono);
}
.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: 800px) {
  .nav-toggle {
    display: inline-flex;
    align-items: center;
  }
  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    background: var(--color-paper-2);
    border-bottom: 1px solid var(--color-line);
  }
  .nav-links.is-open {
    display: flex;
  }
  .nav-links a,
  .nav-links .btn {
    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-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  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 {
  position: relative;
  overflow: hidden;
  color: oklch(12% 0.02 150);
  background: var(--color-accent);
  box-shadow: 0 0 18px oklch(70% 0.16 145 / 0.25);
}
.btn-primary::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, transparent 35%, oklch(100% 0 0 / 0.3) 50%, transparent 65%);
  transform: translateX(-120%);
  animation: sheen 2.8s ease-in-out infinite;
}
@keyframes sheen {
  0%,
  55% {
    transform: translateX(-120%);
  }
  100% {
    transform: translateX(120%);
  }
}
.btn-primary:hover {
  transform: translateY(-1px);
}
.btn-secondary {
  color: var(--color-accent);
  background: transparent;
}
.btn-secondary:hover {
  background: oklch(22% 0.04 150 / 0.6);
}
.btn-ghost {
  border-color: transparent;
  color: var(--color-ink-muted);
  text-decoration: underline;
  text-transform: none;
  letter-spacing: 0;
}

.bento-hero {
  padding: calc(var(--nav-h) + var(--space-xl)) 0 var(--space-2xl);
}
.bento {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--space-sm);
}
.tile {
  background: var(--color-paper-2);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  padding: var(--space-lg);
  min-width: 0;
}
.tile-hero {
  grid-column: span 7;
  min-height: 320px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  position: relative;
  overflow: hidden;
  padding: 0;
}
.tile-hero img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.55;
}
.tile-hero .tile-inner {
  position: relative;
  z-index: 1;
  padding: var(--space-xl);
  background: linear-gradient(180deg, transparent, oklch(10% 0.02 150 / 0.92));
}
.tile-side {
  grid-column: span 5;
  display: grid;
  gap: var(--space-sm);
}
.kicker {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin: 0 0 var(--space-sm);
}
.bento-hero h1 {
  font-size: var(--text-display);
  margin: 0 0 var(--space-sm);
  color: var(--color-ink);
}
.bento-hero h1 span {
  display: block;
  margin-top: 0.35rem;
  font-size: clamp(0.95rem, 1.2vw + 0.4rem, 1.2rem);
  color: var(--color-ink-muted);
  font-weight: 500;
}
.lede {
  color: var(--color-ink-muted);
  margin: 0 0 var(--space-lg);
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}
.metric-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-sm);
}
.metric {
  border-left: 2px solid var(--color-accent);
  padding-left: var(--space-sm);
}
.metric strong {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-accent);
}
.metric span {
  display: block;
  color: var(--color-ink-muted);
  font-size: var(--text-xs);
  margin-top: 2px;
}
@media (max-width: 900px) {
  .tile-hero,
  .tile-side {
    grid-column: span 12;
  }
}

.section {
  padding: var(--space-3xl) 0;
}
.section-head {
  margin-bottom: var(--space-xl);
  max-width: 40rem;
}
.section-head h2 {
  font-size: var(--text-display-s);
  margin: 0 0 var(--space-sm);
}
.section-head p {
  margin: 0;
  color: var(--color-ink-muted);
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: var(--space-sm);
}
.info-cell {
  background: var(--color-paper-2);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  padding: var(--space-md);
  min-width: 0;
}
.info-cell dt {
  margin: 0 0 4px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
}
.info-cell dd {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 600;
  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-radius: var(--radius-sm);
  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-color: var(--color-accent);
  box-shadow: 0 0 20px oklch(70% 0.14 145 / 0.12);
}
.feature-card .mark {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-accent);
  letter-spacing: 0.1em;
}
.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);
  border-radius: var(--radius-sm);
  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(1.08) 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);
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, oklch(22% 0.05 145 / 0.5), oklch(14% 0.02 150));
}
.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);
  border-radius: 1px;
}
.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);
  border-radius: var(--radius-sm);
  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-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-accent);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
@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);
  border-radius: var(--radius-sm);
  background: var(--color-paper-2);
  overflow: hidden;
}
.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: var(--space-md) var(--space-lg);
  font-family: var(--font-mono);
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  gap: var(--space-md);
  align-items: center;
  min-height: 44px;
}
.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);
}

/* Ft4 */
.site-footer {
  border-top: 1px solid var(--color-line);
  padding: var(--space-2xl) 0 var(--space-xl);
  background: var(--color-paper-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
}
.footer-dense {
  color: var(--color-ink-muted);
  line-height: 1.8;
  max-width: 70rem;
}
.footer-dense a {
  color: var(--color-ink-muted);
  text-decoration: none;
  margin-right: 0.75rem;
  white-space: nowrap;
}
.footer-brand-inline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}
.footer-brand-inline img {
  width: 28px;
  height: 28px;
  object-fit: cover;
  border: 1px solid var(--color-line);
}
.related-games {
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-line);
}
.related-games h3 {
  margin: 0 0 var(--space-sm);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
  font-weight: 500;
}
.related-games ul {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm) var(--space-md);
  list-style: none;
  margin: 0;
  padding: 0;
}
.related-games a {
  color: var(--color-ink-muted);
  text-decoration: none;
}
.footer-legal {
  margin-top: var(--space-md);
  color: var(--color-ink-muted);
}
.footer-legal p {
  margin: 0 0 4px;
}

.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);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--color-ink-muted);
  cursor: pointer;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: var(--text-xs);
}
.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);
  border-radius: var(--radius-sm);
  padding: var(--space-lg);
  min-width: 0;
}
.platform-card .badge {
  display: inline-block;
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: oklch(12% 0.02 150);
  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;
  padding: var(--space-md);
}
.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,
.modal-inner table,
.article-body table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}
.spec-box th,
.spec-box td,
.modal-inner th,
.modal-inner 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(12% 0.02 150);
  font-family: var(--font-mono);
  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(5% 0.02 150 / 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);
}
dialog.modal {
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-paper-2);
  color: var(--color-ink);
  padding: 0;
  max-width: min(920px, 94vw);
  width: 100%;
}
dialog.modal::backdrop {
  background: oklch(5% 0.02 150 / 0.8);
}
.modal-inner {
  padding: var(--space-xl);
}
.modal-actions {
  display: flex;
  justify-content: flex-end;
}
.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);
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.crumbs a {
  color: var(--color-ink-muted);
  text-decoration: none;
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .btn-primary::after,
  .feature-card,
  .gallery-item img,
  .review-card {
    animation: none !important;
    transition: none !important;
  }
  .review-card {
    opacity: 1;
    transform: none;
  }
}