@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('/fonts/ibm-plex-mono-400.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('/fonts/ibm-plex-mono-700.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  --site-bg: #f5f5f2;
  --site-surface: #ffffff;
  --site-surface-strong: #ebebea;
  --site-border: #d6d6cf;
  --site-ink: #111111;
  --site-muted: #6f6f68;
  --site-accent: #1a1a2e;
  --site-accent-soft: rgba(26, 26, 46, 0.08);
  --site-shadow: 0 14px 38px rgba(17, 17, 17, 0.08);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --site-bg: #0f0f1a;
    --site-surface: #1a1a2e;
    --site-surface-strong: #2e2e4a;
    --site-border: #2e2e4a;
    --site-ink: #e8e8f0;
    --site-muted: #8888aa;
    --site-accent: #9688ff;
    --site-accent-soft: rgba(150, 136, 255, 0.12);
    --site-shadow: 0 18px 44px rgba(0, 0, 0, 0.28);
  }
}

[data-theme="dark"] {
  --site-bg: #0f0f1a;
  --site-surface: #1a1a2e;
  --site-surface-strong: #2e2e4a;
  --site-border: #2e2e4a;
  --site-ink: #e8e8f0;
  --site-muted: #8888aa;
  --site-accent: #9688ff;
  --site-accent-soft: rgba(150, 136, 255, 0.12);
  --site-shadow: 0 18px 44px rgba(0, 0, 0, 0.28);
}

[data-theme="light"] {
  --site-bg: #f5f5f2;
  --site-surface: #ffffff;
  --site-surface-strong: #ebebea;
  --site-border: #d6d6cf;
  --site-ink: #111111;
  --site-muted: #6f6f68;
  --site-accent: #1a1a2e;
  --site-accent-soft: rgba(26, 26, 46, 0.08);
  --site-shadow: 0 14px 38px rgba(17, 17, 17, 0.08);
}

:root[data-high-contrast="true"] {
  --site-bg: #ffffff;
  --site-surface: #ffffff;
  --site-surface-strong: #f5f5f2;
  --site-border: #111111;
  --site-ink: #111111;
  --site-muted: #111111;
  --site-accent: #1a1a2e;
  --site-accent-soft: #f5f5f2;
  --site-shadow: none;
}

:root[data-theme="dark"][data-high-contrast="true"] {
  --site-bg: #0f0f1a;
  --site-surface: #0f0f1a;
  --site-surface-strong: #1a1a2e;
  --site-border: #e8e8f0;
  --site-ink: #e8e8f0;
  --site-muted: #e8e8f0;
  --site-accent: #9688ff;
  --site-accent-soft: #1a1a2e;
}

@media (prefers-color-scheme: dark) {
  :root[data-high-contrast="true"]:not([data-theme="light"]) {
    --site-bg: #0f0f1a;
    --site-surface: #0f0f1a;
    --site-surface-strong: #1a1a2e;
    --site-border: #e8e8f0;
    --site-ink: #e8e8f0;
    --site-muted: #e8e8f0;
    --site-accent: #9688ff;
    --site-accent-soft: #1a1a2e;
  }
}

body.site-page {
  margin: 0;
  background: var(--site-bg);
  color: var(--site-ink);
  font-family: "IBM Plex Sans", "Avenir Next", "Segoe UI", sans-serif;
}

.site-page * {
  box-sizing: border-box;
}

.site-page a:not(.site-cta):not(.site-nav-cta),
.seo-home a {
  color: var(--site-accent);
}

.site-page a:not(.site-cta):not(.site-nav-cta):hover,
.seo-home a:hover {
  color: var(--site-ink);
}

.site-topbar,
.site-footer,
.site-main {
  font-family: "IBM Plex Sans", "Avenir Next", "Segoe UI", sans-serif;
}

.seo-home {
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.site-topbar {
  width: min(100% - 2rem, 72rem);
  margin: 0 auto;
  padding: 1.1rem 0 0;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
}

.site-wordmark {
  color: var(--site-ink);
  font-family: "IBM Plex Mono", "SFMono-Regular", monospace;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
  text-transform: uppercase;
}

.site-nav-links,
.site-footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
}

.site-nav-links a,
.site-footer-links a {
  text-decoration: none;
  font-size: 0.95rem;
}

.site-main {
  width: min(100% - 2rem, 72rem);
  margin: 0 auto;
  padding: 2rem 0 4rem;
}

.site-article,
.seo-home {
  background: var(--site-surface);
  border: 1px solid var(--site-border);
  border-radius: 1.5rem;
  box-shadow: var(--site-shadow);
}

.site-article {
  padding: clamp(1.5rem, 3vw, 3rem);
}

.site-eyebrow {
  margin: 0 0 0.6rem;
  color: var(--site-accent);
  font-family: "IBM Plex Mono", "SFMono-Regular", monospace;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-article h1 {
  margin: 0 0 1rem;
  color: var(--site-ink);
  font-family: "IBM Plex Sans", "Avenir Next", "Segoe UI", sans-serif;
  font-size: clamp(2rem, 5vw, 3.6rem);
  line-height: 0.98;
  letter-spacing: -0.04em;
}

.seo-home h2 {
  margin: 0 0 1rem;
  color: var(--site-ink);
  font-size: var(--text-3xl);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.site-article h2 {
  margin: 0 0 0.85rem;
  color: var(--site-ink);
  font-size: clamp(1.35rem, 2.5vw, 1.8rem);
  line-height: 1.1;
}

.seo-home h3 {
  margin: 0 0 0.55rem;
  color: var(--site-ink);
  font-size: var(--text-xl);
  line-height: 1.2;
}

.site-article h3,
.site-faq-item summary {
  margin: 0 0 0.55rem;
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.25;
}

.site-faq-item summary {
  cursor: pointer;
  list-style: none;
}

.site-faq-item summary::-webkit-details-marker {
  display: none;
}

.site-faq-item[open] summary {
  margin-bottom: 0.6rem;
}

.site-lead,
.site-section p,
.site-card p,
.site-faq-item p,
.seo-home p,
.site-footer p,
.site-figure figcaption {
  margin: 0;
  color: var(--site-muted);
  font-size: 1.02rem;
  line-height: 1.7;
}

.site-lead + .site-lead,
.site-section p + p,
.seo-home p + p,
.site-faq-item p + p {
  margin-top: 0.95rem;
}

.site-section {
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(211, 195, 167, 0.6);
}

.site-list {
  margin: 1rem 0 0;
  padding-left: 1.15rem;
  color: var(--site-muted);
}

.site-list li + li {
  margin-top: 0.55rem;
}

.site-figure {
  margin: 1.4rem 0 0;
  padding: 1rem;
  border: 1px solid var(--site-border);
  border-radius: 1rem;
  background: linear-gradient(180deg, var(--site-surface-strong), var(--site-surface));
}

.site-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 0.8rem;
}

.site-figure figcaption {
  margin-top: 0.8rem;
  font-size: 0.92rem;
}

.site-cta-row {
  margin-top: 1.5rem;
}

.site-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.25rem;
  border-radius: 999px;
  background: var(--site-accent);
  color: var(--site-bg);
  font-weight: 700;
  text-decoration: none;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.18);
}

.site-nav-cta {
  display: inline-flex;
  align-items: center;
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  background: var(--site-accent);
  color: var(--site-bg);
  font-size: 0.88rem;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
}

.site-inline-link {
  display: inline-flex;
  margin-top: 0.85rem;
  font-weight: 700;
  text-decoration-thickness: 0.12em;
  text-underline-offset: 0.16em;
}

.site-card-grid,
.site-faq-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.site-card,
.site-faq-item {
  padding: 1.15rem;
  border: 1px solid var(--site-border);
  border-radius: 1rem;
  background: var(--site-surface);
}

[data-high-contrast="true"] .site-article,
[data-high-contrast="true"] .seo-home,
[data-high-contrast="true"] .site-card,
[data-high-contrast="true"] .site-faq-item,
[data-high-contrast="true"] .site-figure {
  box-shadow: none;
  border-width: 2px;
}

[data-high-contrast="true"] .site-cta,
[data-high-contrast="true"] .site-nav-cta {
  background: var(--site-accent);
  color: var(--site-bg);
  box-shadow: none;
}

.site-card h3 a {
  color: var(--site-ink);
  text-decoration: none;
}

.site-card h3 a:hover {
  color: var(--site-accent);
}

.site-footer {
  width: min(100% - 2rem, 72rem);
  margin: 0 auto;
  padding: 0 0 3rem;
}

.site-footer p {
  margin-bottom: 0.9rem;
}

.seo-home {
  width: min(100% - 2rem, 72rem);
  margin: 1.5rem auto 3rem;
  padding: clamp(1.5rem, 3vw, 2.5rem);
}

.seo-home__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(20rem, 0.95fr);
  gap: 1.5rem;
  align-items: start;
}

.seo-home__feature .site-figure,
.seo-home__faq {
  margin-top: 0;
}

.seo-home .site-card-grid,
.seo-home .site-home__faq {
  margin-top: 1.5rem;
}

.site-page :focus-visible,
.seo-home :focus-visible {
  outline: 2px solid var(--site-accent);
  outline-offset: 3px;
}

/* Single card in the "Keep exploring" grid spans both columns */
.site-card-grid > :only-child {
  grid-column: span 2;
}

/* === Stat boxes === */

.site-stat-boxes {
  margin: 1.5rem 0 0;
}

.site-stat-boxes__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  margin-bottom: 0.85rem;
}

.site-stat-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  padding: 1rem 0.75rem;
  background: var(--site-surface);
  border: 1px solid var(--site-border);
  border-radius: 10px;
}

.site-stat-box__value {
  font-family: "IBM Plex Mono", "SFMono-Regular", monospace;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--site-accent);
  line-height: 1;
}

.site-stat-box__label {
  font-size: 0.78rem;
  color: var(--site-muted);
  text-align: center;
}

/* === Chain example component === */
.chain-example__title {
  margin: 0.2rem 0 0.85rem;
  color: var(--site-ink);
  font-family: "IBM Plex Mono", "SFMono-Regular", monospace;
  font-size: 1rem;
  font-weight: 700;
}

.chain-example__path {
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  gap: 0.35rem;
  padding: 0.25rem 0 0.75rem;
  overflow-x: auto;
}

.chain-example__node {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 3.2rem;
  padding: 0.35rem 0.65rem;
  border: 1.5px solid var(--site-border);
  border-radius: 0.6rem;
  background: var(--site-surface);
  text-align: center;
  flex-shrink: 0;
}

.chain-example__node--start {
  border-color: var(--site-accent);
}

.chain-example__node--target {
  border-color: var(--site-accent);
  background: var(--site-accent);
}

.chain-example__node-badge {
  font-family: "IBM Plex Mono", "SFMono-Regular", monospace;
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--site-accent);
  line-height: 1.2;
}

.chain-example__node-num {
  font-family: "IBM Plex Mono", "SFMono-Regular", monospace;
  font-size: 1.4rem;
  font-weight: 700;
  line-height: 1;
  color: var(--site-ink);
}

.chain-example__node--start .chain-example__node-num {
  color: var(--site-accent);
}

.chain-example__node--target .chain-example__node-num {
  color: var(--site-bg);
}

.chain-example__step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.15rem;
  flex-shrink: 0;
}

.chain-example__op {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0.25rem 0.5rem;
  border: 1px solid var(--site-border);
  border-radius: 0.45rem;
  background: var(--site-surface);
  font-family: "IBM Plex Mono", "SFMono-Regular", monospace;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--site-accent);
  white-space: nowrap;
}

.chain-example__op-detail {
  display: block;
  font-weight: 400;
  color: var(--site-muted);
  text-transform: none;
  letter-spacing: 0;
  font-size: 0.65rem;
}

.chain-example__arrow {
  color: var(--site-muted);
  font-size: 0.85rem;
  line-height: 1;
}

/* === Below-fold home section: remap to game design tokens ===
   The .seo-home block is embedded in the game page, so --surface / --ink / etc.
   are available from app.css. Remapping --site-* here means every descendant rule
   picks up game colors automatically, including dark mode. */
.seo-home {
  --site-surface: var(--surface-muted);
  --site-surface-strong: var(--surface);
  --site-border: var(--border);
  --site-ink: var(--ink);
  --site-muted: var(--muted);
  --site-accent: var(--accent);
  --site-shadow: var(--shadow-modal);
}

.seo-home .site-card,
.seo-home .site-faq-item {
  --site-surface: var(--surface);
}

.seo-home .site-figure {
  --site-surface: var(--surface);
  --site-surface-strong: var(--surface-muted);
}

.seo-home .site-section {
  border-top-color: var(--border);
}

/* Hide the below-fold section when running as an installed PWA */
@media (display-mode: standalone) {
  .seo-home {
    display: none;
  }
}

@media (max-width: 780px) {
  .site-topbar,
  .site-main,
  .site-footer,
  .seo-home {
    width: min(100% - 1rem, 72rem);
  }

  .site-topbar {
    padding-top: 0.75rem;
    flex-direction: column;
    align-items: flex-start;
  }

  .seo-home__inner,
  .site-card-grid,
  .site-faq-list {
    grid-template-columns: 1fr;
  }

  .site-article {
    padding: 1.25rem;
  }
}