:root {
  color-scheme: dark;
  --void: #000800;
  --surface: #041108;
  --surface-raised: #071a0e;
  --surface-hot: #0c2616;
  --phosphor: #39ff78;
  --phosphor-bright: #b8ffcb;
  --phosphor-muted: #6fad7f;
  --phosphor-faint: #2a5535;
  --line: #1a4d2c;
  --line-bright: #2f9a4e;
  --amber: #ffbe3d;
  --amber-soft: #c68c23;
  --danger: #ff6b62;
  --ink: #d6ecd9;
  --ink-muted: #8eaa94;
  --rail-width: 13.75rem;
  --max-width: 1180px;
  --corner: 11px;
  --mono: "DejaVu Sans Mono", "Liberation Mono", ui-monospace, SFMono-Regular,
    Menlo, Monaco, Consolas, "Courier New", monospace;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--void);
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  background:
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 2px,
      rgba(0, 0, 0, 0.18) 2px,
      rgba(0, 0, 0, 0.18) 3px
    ),
    radial-gradient(ellipse at 50% 0%, rgba(57, 255, 120, 0.07), transparent 42rem),
    radial-gradient(circle at 82% 12%, rgba(32, 112, 59, 0.16), transparent 28rem),
    var(--void);
  color: var(--ink);
  font: 400 14px/1.55 var(--mono);
  text-rendering: optimizeLegibility;
}

::selection {
  background: var(--phosphor);
  color: var(--void);
}

a {
  color: var(--phosphor);
  text-decoration-color: var(--phosphor-faint);
  text-underline-offset: 0.22em;
}

a:hover {
  color: var(--phosphor-bright);
  text-decoration-color: currentColor;
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
}

img,
svg {
  max-width: 100%;
}

code {
  font-family: var(--mono);
  color: var(--phosphor-bright);
}

.skip-link {
  position: fixed;
  z-index: 50;
  top: 1rem;
  left: 1rem;
  padding: 0.65rem 0.85rem;
  translate: 0 -200%;
  background: var(--amber);
  color: var(--void);
  font-weight: 800;
}

.skip-link:focus {
  translate: 0;
}

.site-shell {
  position: relative;
  width: min(calc(100% - 1.5rem), var(--max-width));
  margin: 0.75rem auto;
  border: 1px solid var(--line);
  background:
    linear-gradient(var(--phosphor), var(--phosphor)) 0 0 / var(--corner) 2px no-repeat,
    linear-gradient(var(--phosphor), var(--phosphor)) 0 0 / 2px var(--corner) no-repeat,
    linear-gradient(var(--phosphor), var(--phosphor)) 100% 0 / var(--corner) 2px no-repeat,
    linear-gradient(var(--phosphor), var(--phosphor)) 100% 0 / 2px var(--corner) no-repeat,
    linear-gradient(var(--phosphor), var(--phosphor)) 0 100% / var(--corner) 2px no-repeat,
    linear-gradient(var(--phosphor), var(--phosphor)) 0 100% / 2px var(--corner) no-repeat,
    linear-gradient(var(--phosphor), var(--phosphor)) 100% 100% / var(--corner) 2px no-repeat,
    linear-gradient(var(--phosphor), var(--phosphor)) 100% 100% / 2px var(--corner) no-repeat,
    rgba(2, 8, 4, 0.96);
  box-shadow:
    inset 0 0 0 1px rgba(57, 255, 120, 0.04),
    0 0 48px rgba(57, 255, 120, 0.05);
}

.top-bar {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.85rem 1.5rem;
  align-items: center;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(12, 38, 22, 0.55), transparent);
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 0.55rem;
  color: var(--phosphor-bright);
  font-weight: 900;
  letter-spacing: 0.12em;
  text-decoration: none;
  text-transform: uppercase;
  white-space: nowrap;
  font-size: 0.95rem;
}

.brand-mark {
  color: var(--amber);
  letter-spacing: 0.04em;
  text-shadow: 0 0 12px rgba(255, 190, 61, 0.35);
}

.slogan {
  margin: 0;
  color: var(--phosphor-muted);
  font-size: 0.64rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.access-line {
  grid-column: 1 / -1;
  margin: 0;
  padding: 0.45rem 0.15rem 0;
  border-top: 1px dotted var(--line);
  color: var(--phosphor-muted);
  font-size: 0.72rem;
}

.access-line span,
.access-line .boot-ok {
  color: var(--phosphor);
}

.access-line .boot-ok::before {
  content: ">> ";
  color: var(--amber);
}

.deck {
  display: grid;
  grid-template-columns: var(--rail-width) minmax(0, 1fr);
  min-height: 70vh;
}

.rail {
  padding: 1rem 0.75rem;
  border-right: 1px solid var(--line);
  background: var(--surface);
}

.rail-label {
  margin: 0 0 0.65rem;
  padding: 0 0.45rem;
  color: var(--amber);
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.primary-nav {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.primary-nav a {
  display: block;
  padding: 0.42rem 0.5rem;
  color: var(--phosphor-muted);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
  border: 1px solid transparent;
  transition: border-color 140ms ease, background 140ms ease, color 140ms ease;
}

.primary-nav a::before {
  content: ":: ";
  color: var(--phosphor-faint);
}

.primary-nav a:hover,
.primary-nav a[aria-current="page"] {
  border-color: var(--line-bright);
  background: var(--surface-hot);
  color: var(--phosphor-bright);
}

.primary-nav a:hover::before,
.primary-nav a[aria-current="page"]::before {
  color: var(--phosphor);
}

.primary-nav a.nav-play[aria-current="page"] {
  border-color: var(--amber-soft);
  color: var(--amber);
}

.primary-nav a.nav-play[aria-current="page"]::before {
  color: var(--amber);
}

.rail-note {
  margin: 1.25rem 0.45rem 0;
  color: var(--phosphor-faint);
  font-size: 0.68rem;
  line-height: 1.45;
}

.stage {
  min-width: 0;
}

.hero-strip {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(12rem, 0.85fr);
  gap: 1rem 1.25rem;
  align-items: stretch;
  padding: clamp(1.35rem, 3.5vw, 2.25rem) clamp(1rem, 3vw, 2rem);
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(90deg, rgba(12, 38, 22, 0.95), transparent 58%),
    repeating-linear-gradient(
      90deg,
      transparent,
      transparent 11px,
      rgba(57, 255, 120, 0.03) 11px,
      rgba(57, 255, 120, 0.03) 12px
    ),
    var(--surface-raised);
  animation: strip-in 480ms ease-out;
}

.hero-copy {
  min-width: 0;
}

.hero-atmosphere {
  display: flex;
  flex-direction: column;
  min-width: 0;
  border: 1px solid var(--line);
  background: var(--void);
  overflow: hidden;
}

.atmosphere-art {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 480 / 280;
  object-fit: cover;
  filter: contrast(1.05) saturate(1.05);
}

.atmosphere-caption {
  margin: 0;
  padding: 0.4rem 0.55rem;
  border-top: 1px solid var(--line);
  color: var(--amber);
  font-size: 0.58rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: var(--surface);
}

.hero-strip h1 {
  max-width: 18ch;
  margin: 0;
  color: var(--phosphor-bright);
  font-size: clamp(1.85rem, 4.5vw, 3.2rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  text-wrap: balance;
  text-shadow: 0 0 24px rgba(57, 255, 120, 0.18);
}

.hero-strip h1 em {
  color: var(--amber);
  font-style: normal;
}

.lede {
  max-width: 62ch;
  margin: 0.85rem 0 0;
  color: var(--ink-muted);
  font-size: clamp(0.92rem, 1.6vw, 1.05rem);
}

.lede strong {
  color: var(--ink);
}

.actions {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-wrap: wrap;
  margin-top: 1.25rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0.55rem 0.9rem;
  border: 1px solid var(--line-bright);
  background: var(--surface);
  color: var(--phosphor-bright);
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  text-decoration: none;
  transition: background 140ms ease, border-color 140ms ease, color 140ms ease;
}

.button:hover {
  border-color: var(--phosphor);
  background: var(--surface-hot);
  color: #fff;
}

.button-primary {
  border-color: var(--amber);
  background: var(--amber);
  color: var(--void);
  box-shadow: 0 0 0 0 transparent;
}

.button-primary:hover {
  border-color: #ffd77b;
  background: #ffd77b;
  color: var(--void);
}

.button-primary:focus-visible {
  animation: amber-flash 700ms ease-in-out 2;
}

.button.is-degraded {
  border-style: dashed;
}

.button.is-ready {
  border-color: var(--phosphor);
}

.microcopy {
  margin: 0.7rem 0 0;
  color: var(--phosphor-muted);
  font-size: 0.7rem;
}

.section {
  padding: clamp(1.25rem, 3vw, 2rem) clamp(1rem, 3vw, 2rem);
  border-bottom: 1px solid var(--line);
}

.section h2,
.page-section h2,
.resource-group h2 {
  margin: 0;
  color: var(--phosphor-bright);
  font-size: clamp(1.1rem, 2.4vw, 1.45rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.85rem;
  padding-bottom: 0.45rem;
  border-bottom: 1px dashed var(--line);
}

.tag {
  color: var(--amber);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.amber {
  color: var(--amber);
}

[data-runtime-reach].ok {
  color: var(--phosphor);
}

[data-runtime-reach].err {
  color: var(--danger);
}

[data-fallback][hidden] {
  display: none !important;
}

.page-hero {
  padding: clamp(1.5rem, 4vw, 2.5rem) clamp(1rem, 3vw, 2rem);
  border-bottom: 1px solid var(--line);
}

.page-hero h1 {
  max-width: 16ch;
  margin: 0;
  color: var(--phosphor-bright);
  font-size: clamp(1.7rem, 4vw, 2.8rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.page-section {
  padding: clamp(1.25rem, 3vw, 2rem) clamp(1rem, 3vw, 2rem);
  border-bottom: 1px solid var(--line);
}

.page-section > p {
  max-width: 70ch;
  color: var(--ink-muted);
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.55rem;
}

.project-card {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  min-height: 9.25rem;
  padding: 0.85rem 0.9rem;
  border: 1px solid var(--line);
  background:
    linear-gradient(var(--line-bright), var(--line-bright)) 0 0 / 8px 1px no-repeat,
    linear-gradient(var(--line-bright), var(--line-bright)) 0 0 / 1px 8px no-repeat,
    linear-gradient(var(--line-bright), var(--line-bright)) 100% 100% / 8px 1px no-repeat,
    linear-gradient(var(--line-bright), var(--line-bright)) 100% 100% / 1px 8px no-repeat,
    var(--surface);
  color: inherit;
  text-decoration: none;
  transition: border-color 160ms ease, background-color 160ms ease, transform 160ms ease,
    box-shadow 160ms ease;
}

.project-card:hover {
  border-color: var(--phosphor);
  background-color: var(--surface-hot);
  box-shadow: 0 0 18px rgba(57, 255, 120, 0.08);
  transform: translateY(-1px);
}

.project-card h3 {
  margin: 0;
  color: var(--phosphor-bright);
  font-size: 0.9rem;
  letter-spacing: 0.02em;
}

.project-card p {
  margin: 0;
  flex: 1;
  color: var(--ink-muted);
  font-size: 0.74rem;
}

.project-card .card-dest {
  margin-top: auto;
  padding-top: 0.45rem;
  border-top: 1px dotted var(--line);
  color: var(--amber);
  font-size: 0.6rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.status-pill {
  align-self: flex-start;
  padding: 0.15rem 0.4rem;
  border: 1px solid var(--line-bright);
  color: var(--phosphor);
  font-size: 0.58rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.status-pill.is-online {
  border-color: var(--phosphor);
  color: var(--phosphor-bright);
}

.status-pill.is-active {
  border-color: var(--amber-soft);
  color: var(--amber);
}

.choice-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  margin-top: 1rem;
}

.game-choice {
  display: block;
  padding: 1rem;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink-muted);
  text-decoration: none;
  transition: border-color 140ms ease, background 140ms ease;
}

.game-choice:hover,
.game-choice.is-selected {
  border-color: var(--amber);
  background: var(--surface-hot);
  color: var(--phosphor-bright);
}

.game-choice strong {
  display: block;
  margin-bottom: 0.3rem;
  color: var(--phosphor-bright);
}

.compatibility {
  margin-top: 0.5rem;
  border: 1px solid var(--line);
  background: var(--surface);
}

.capability-row {
  display: grid;
  grid-template-columns: minmax(120px, 0.45fr) 4.5rem minmax(160px, 1fr);
  gap: 0.75rem;
  padding: 0.65rem 0.85rem;
  border-bottom: 1px dotted var(--line);
  color: var(--ink-muted);
  font-size: 0.74rem;
}

.capability-row:last-child {
  border-bottom: 0;
}

.capability-row [data-cap-state] {
  color: var(--phosphor-muted);
}

.capability-row.is-pass [data-cap-state],
summary.is-pass {
  color: var(--phosphor);
}

.capability-row.is-fail [data-cap-state],
summary.is-warn {
  color: var(--amber);
}

.capability-row.is-pending [data-cap-state],
summary.is-pending {
  color: var(--phosphor-muted);
}

.preflight-banner {
  margin: 1rem 0 0;
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--phosphor-muted);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
}

.preflight-banner.is-ready {
  border-color: var(--line-bright);
  color: var(--phosphor);
}

.preflight-banner.is-warn {
  border-color: var(--amber-soft);
  color: var(--amber);
}

.preflight-banner.is-pending {
  border-style: dashed;
}

.notice {
  margin: 1rem 0 0;
  padding: 0.85rem 1rem;
  border: 1px solid var(--amber-soft);
  background: rgba(255, 190, 61, 0.06);
  color: #d6c59e;
  font-size: 0.76rem;
}

.resource-group + .resource-group {
  margin-top: 0;
}

.resource-list {
  border-top: 1px solid var(--line);
  margin-top: 0.85rem;
}

.resource-row {
  display: grid;
  grid-template-columns: minmax(140px, 0.4fr) minmax(220px, 1fr);
  gap: 1rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--line);
}

.resource-row h3 {
  margin: 0 0 0.3rem;
  color: var(--phosphor-bright);
  font-size: 0.9rem;
}

.resource-row p {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.78rem;
}

.resource-row .links {
  margin-top: 0.4rem;
  font-size: 0.72rem;
}

.resource-row .links a + a::before {
  margin: 0 0.45rem;
  color: var(--phosphor-faint);
  content: "/";
}

.format-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin-top: 1rem;
  border: 1px solid var(--line);
  background: var(--line);
}

.format-link {
  display: block;
  min-height: 100%;
  padding: 0.9rem;
  background: var(--surface);
  text-decoration: none;
  transition: background 140ms ease;
}

.format-link:hover {
  background: var(--surface-hot);
}

.format-link strong {
  display: block;
  color: var(--phosphor-bright);
}

.format-link span {
  display: block;
  margin-top: 0.3rem;
  color: var(--ink-muted);
  font-size: 0.72rem;
}

.plain-list {
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.plain-list li {
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink-muted);
}

.plain-list li::before {
  margin-right: 0.55rem;
  color: var(--amber);
  content: ">";
}

.preflight-details {
  margin: 0.85rem 0 1rem;
  border: 1px solid var(--line);
  background: var(--surface);
  padding: 0.55rem 0.75rem;
}

.preflight-details summary {
  cursor: pointer;
  color: var(--phosphor);
  font-size: 0.8rem;
  list-style: none;
}

.preflight-details summary::-webkit-details-marker {
  display: none;
}

.preflight-details[open] summary {
  margin-bottom: 0.65rem;
  border-bottom: 1px solid var(--line);
  padding-bottom: 0.45rem;
}

.site-footer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1.5rem;
  align-items: end;
  padding: 1rem;
  border-top: 1px solid var(--line);
  color: var(--phosphor-muted);
  font-size: 0.68rem;
}

.footer-links {
  display: flex;
  justify-content: flex-end;
  gap: 0.9rem;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--phosphor-muted);
}

.legal {
  max-width: 72ch;
  margin: 0.35rem 0 0;
  color: var(--phosphor-faint);
}

@keyframes strip-in {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes amber-flash {
  0%,
  100% {
    box-shadow: 0 0 0 0 transparent;
  }
  50% {
    box-shadow: 0 0 0 3px rgba(255, 190, 61, 0.55);
  }
}

@media (max-width: 900px) {
  .deck {
    grid-template-columns: 1fr;
  }

  .rail {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .primary-nav {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .hero-strip {
    grid-template-columns: 1fr;
  }

  .hero-atmosphere {
    order: -1;
    max-width: 28rem;
  }

  .project-grid,
  .format-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  body {
    font-size: 13px;
  }

  .site-shell {
    width: 100%;
    margin: 0;
    border-right: 0;
    border-left: 0;
  }

  .top-bar {
    grid-template-columns: 1fr;
  }

  .actions .button {
    width: 100%;
  }

  .choice-grid,
  .resource-row,
  .capability-row {
    grid-template-columns: 1fr;
  }

  .site-footer {
    grid-template-columns: 1fr;
  }

  .footer-links {
    justify-content: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}