:root {
  --bg: #f7f7f5;
  --ink: #121212;
  --muted: #5a5a5a;
  --line: rgba(18, 18, 18, 0.12);
  --accent: #b8ff2e;
  --accent-ink: #102000;
  --panel: #ffffff;
  --band: #efefec;
  --shadow: 0 10px 28px rgba(18, 18, 18, 0.08);
  --radius: 14px;
  --font-display: "Zilla Slab", "Rockwell", "Times New Roman", serif;
  --font-body: "Source Sans 3", "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", "Consolas", monospace;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 40px;
  --space-6: 64px;
  --max: 1120px;
  --narrow: 720px;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--ink);
  background: var(--bg);
  min-height: 100vh;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--ink); text-decoration: none; }
a:hover { text-decoration: underline; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

.img-grain {
  position: relative;
}
.img-grain::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.12;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 120 120' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)' opacity='0.55'/%3E%3C/svg%3E");
  mix-blend-mode: multiply;
  border-radius: inherit;
}

.age-bar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--ink);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-align: centre;
  text-align: center;
  padding: 6px 12px;
}

.site-header {
  background: var(--panel);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.2rem;
  text-decoration: none;
  color: var(--ink);
}
.brand:hover { text-decoration: none; }
.brand img {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.4);
}
.nav {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.nav a {
  font-size: 0.95rem;
  font-weight: 600;
}
.nav-toggle {
  display: none;
  border: 0;
  background: var(--accent);
  color: var(--accent-ink);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 10px 14px;
  border-radius: 999px;
  cursor: pointer;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 0;
  border-radius: 999px;
  padding: 12px 22px;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  text-decoration: none;
  line-height: 1;
}
.btn:hover { text-decoration: none; }
.btn--primary {
  background: var(--accent);
  color: var(--accent-ink);
}
.btn--ghost {
  background: transparent;
  color: var(--ink);
  box-shadow: inset 0 0 0 2px var(--ink);
}
.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(184, 255, 46, 0.28);
  color: var(--accent-ink);
}

.kicker {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 8px;
}

h1, h2, h3, .display {
  font-family: var(--font-display);
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: -0.01em;
}
h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); margin: 0 0 16px; }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); margin: 0 0 14px; }
h3 { font-size: 1.25rem; margin: 0 0 10px; }

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 20px;
}
.wrap--narrow {
  max-width: var(--narrow);
}

.band {
  padding: var(--space-6) 0;
}
.band--tint {
  background: var(--band);
}
.band--ink {
  background: var(--ink);
  color: #fff;
}
.band--ink a { color: var(--accent); }
.boxed {
  max-width: var(--narrow);
  margin: 0 auto;
  padding: 0 20px;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: var(--space-6) 0 var(--space-5);
}
.hero::before {
  content: "";
  position: absolute;
  inset: -20% -10% auto;
  height: 120%;
  background:
    radial-gradient(circle at 70% 30%, rgba(184,255,46,0.18), transparent 42%),
    repeating-radial-gradient(circle at 18% 80%, transparent 0 38px, rgba(18,18,18,0.035) 39px 40px);
  pointer-events: none;
}
.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 36px;
  align-items: center;
}
.hero-copy p {
  max-width: 42ch;
  font-size: 1.125rem;
  margin: 0 0 22px;
}
.hero-panel {
  background: var(--panel);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  border: 1px solid var(--line);
  position: relative;
}
.hero-panel img {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
}
.hero-panel .caption {
  padding: 14px 16px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border-top: 1px solid var(--line);
}

.free-strip {
  background: var(--accent);
  color: var(--accent-ink);
  padding: 14px 20px;
  font-weight: 600;
}
.free-strip .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  align-items: baseline;
}
.free-strip strong {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.tile-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}
.tile {
  background: var(--panel);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid transparent;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 100%;
  box-shadow: var(--shadow), inset 0 1px 0 rgba(255,255,255,0.65);
}
.tile__art {
  position: relative;
  aspect-ratio: 1;
  background: #e8e8e4;
}
.tile__art img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.tile__body {
  padding: 16px 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}
.tile__body p {
  margin: 0;
  color: var(--muted);
  font-size: 0.98rem;
  flex: 1;
}
.tile__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.table-wrap { overflow-x: auto; }
table.quick {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.98rem;
}
table.quick th, table.quick td {
  text-align: left;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
}
table.quick th {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
}
table.quick td:first-child { font-weight: 700; }

.quick-answer {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.7);
  margin: 0 0 28px;
}
.quick-answer strong {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 8px;
  color: var(--muted);
}

.faq-block { margin-top: 28px; }
.faq-group { margin-bottom: 28px; }
.faq-item {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 12px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}
.faq-num {
  font-family: var(--font-display);
  font-size: 2rem;
  line-height: 1;
  color: var(--ink);
}
.faq-item h3 { margin: 0 0 6px; font-size: 1.15rem; }
.faq-item p { margin: 0; color: var(--muted); }

.olist {
  list-style: none;
  padding: 0;
  margin: 0 0 20px;
  counter-reset: olist;
}
.olist li {
  position: relative;
  padding-left: 44px;
  margin-bottom: 12px;
  counter-increment: olist;
}
.olist li::before {
  content: counter(olist);
  position: absolute;
  left: 0;
  top: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--accent-ink);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  display: grid;
  place-items: center;
}

.disclaimer {
  font-size: 0.92rem;
  color: var(--muted);
  max-width: 70ch;
}
.disclaimer p { margin: 0 0 10px; }

.site-footer {
  background: var(--bg);
  border-top: 1px solid var(--line);
  padding: 28px 20px 40px;
}
.footer-links {
  max-width: var(--max);
  margin: 0 auto;
  font-size: 0.82rem;
  line-height: 1.9;
  text-align: justify;
  text-align-last: left;
  color: var(--muted);
}
.footer-links a {
  color: var(--ink);
  font-weight: 600;
  white-space: nowrap;
}
.footer-note {
  max-width: var(--max);
  margin: 16px auto 0;
  font-size: 0.8rem;
  color: var(--muted);
}

.cookie-banner {
  position: fixed;
  right: 16px;
  bottom: 16px;
  left: 16px;
  max-width: 420px;
  margin-left: auto;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
  z-index: 60;
}
.cookie-banner p {
  margin: 0 0 12px;
  font-size: 0.92rem;
}

.content-page {
  padding: var(--space-5) 0 var(--space-6);
}
.content-page .lead {
  font-size: 1.15rem;
  max-width: 60ch;
}
.prose p { max-width: 68ch; }
.prose h2 { margin-top: 2.2rem; position: relative; }
.copy-link {
  margin-left: 10px;
  border: 0;
  background: rgba(184,255,46,0.25);
  color: var(--accent-ink);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 4px 8px;
  border-radius: 999px;
  cursor: pointer;
  vertical-align: middle;
}

[data-rise] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
[data-rise].is-visible {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  [data-rise] { opacity: 1; transform: none; transition: none; }
}

.game-shell {
  padding: var(--space-4) 0 var(--space-6);
}
.game-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}
@media (min-width: 900px) {
  .game-layout {
    grid-template-columns: minmax(0, 1.4fr) minmax(260px, 0.7fr);
    align-items: start;
  }
}
.game-stage {
  background: var(--panel);
  border-radius: var(--radius);
  border: 1px solid var(--line);
  box-shadow: var(--shadow), inset 0 1px 0 rgba(255,255,255,0.7);
  padding: 16px;
}
.game-side {
  background: var(--band);
  border-radius: var(--radius);
  padding: 16px;
  border: 1px solid var(--line);
}
.coin-panel {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  background: var(--ink);
  color: #fff;
  border-radius: var(--radius);
  margin-bottom: 14px;
}
.coin-panel .mono { color: var(--accent); font-size: 1.1rem; font-weight: 700; }
.coin-panel .note { font-size: 0.78rem; opacity: 0.8; width: 100%; }
.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin: 12px 0;
}
.controls label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.controls input, .controls select {
  font: inherit;
  padding: 8px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #fff;
}
.result-live {
  min-height: 1.5em;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  margin: 8px 0 0;
}
.noscript {
  padding: 16px;
  background: #fff3cd;
  border-radius: var(--radius);
}

.theme-diner .game-stage { background: #fff8f4; }
.theme-fruit .game-stage { background: #f5f5f7; }
.theme-west .game-stage { background: #f7f1e8; }
.theme-space .game-stage { background: #0d1220; color: #e8ecff; }
.theme-space .result-live { color: #d7ffe0; }
.theme-space .controls label { color: #c5cbe8; }
.theme-carnival .game-stage { background: #fff7ef; }

.pixel-board { image-rendering: pixelated; }

.mine-cell:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

@media (max-width: 800px) {
  .hero-grid { grid-template-columns: 1fr; }
  .nav-toggle { display: inline-flex; }
  .nav {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
    padding-top: 8px;
  }
  .nav.is-open { display: flex; }
  .header-inner { flex-wrap: wrap; }
  .band .wrap[style*="grid-template-columns"] {
    display: block !important;
  }
  .band .wrap[style*="grid-template-columns"] > div + div {
    margin-top: 20px;
  }
}