/* Token names and values mirror the OPRN Studio app (rpg-zzu src/styles/tokens.css + base/theme.css, PR #4180).
   Keep them in sync with the app; light is the default and dark follows the OS. */
:root {
  color-scheme: light dark;
  --bg-base: #FFFFFF;
  --bg-surface: #F7F7F5;
  --bg-raised: #FFFFFF;
  --bg-inset: #F2F2F0;
  --bg-canvas: #E9E9E7;
  --bg-glass: rgba(255, 255, 255, 0.86);
  --bg-hover: rgba(55, 53, 47, 0.06);
  --bg-active: rgba(55, 53, 47, 0.10);
  --border-subtle: rgba(55, 53, 47, 0.09);
  --border-default: rgba(55, 53, 47, 0.16);
  --border-strong: rgba(55, 53, 47, 0.56);
  --text-1: #1F1F1E;
  --text-2: #5F5E5B;
  --text-3: #656460;
  --accent: #1F6FC5;
  --accent-hover: #185BA3;
  --accent-muted: rgba(31, 111, 197, 0.08);
  --accent-border: rgba(31, 111, 197, 0.45);
  --on-accent: #FFFFFF;
  --danger: #B5302E;
  --danger-muted: rgba(198, 64, 61, 0.13);
  --success: #18764F;
  --success-muted: rgba(24, 118, 79, 0.13);
  --warning: #7A5300;
  --warning-muted: rgba(138, 94, 0, 0.13);
  --shadow-pop: 0 4px 12px rgba(15, 15, 15, 0.08), 0 12px 32px rgba(15, 15, 15, 0.10);
  --radius-s: 6px;
  --radius-m: 10px;
  --radius-l: 14px;
  --radius-pill: 999px;
  --font-ui: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Pretendard Variable", Pretendard, "Apple SD Gothic Neo", "Noto Sans KR", system-ui, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  /* site-only, not in the app: colours of the AI build demo on the home page */
  --ghost: rgba(31, 111, 197, 0.30);
  --ghost-edge: rgba(31, 111, 197, 0.72);
  --cover: #E3E3E0;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg-base: #1C1C1E;
    --bg-surface: #232325;
    --bg-raised: #262628;
    --bg-inset: #161618;
    --bg-canvas: #141415;
    --bg-glass: rgba(28, 28, 30, 0.86);
    --bg-hover: rgba(255, 255, 255, 0.06);
    --bg-active: rgba(255, 255, 255, 0.10);
    --border-subtle: rgba(255, 255, 255, 0.08);
    --border-default: rgba(255, 255, 255, 0.14);
    --border-strong: rgba(255, 255, 255, 0.42);
    --text-1: #ECECEA;
    --text-2: #ABABA7;
    --text-3: #9E9E9A;
    --accent: #409CFF;
    --accent-hover: #6CB2FF;
    --accent-muted: rgba(64, 156, 255, 0.11);
    --accent-border: rgba(64, 156, 255, 0.50);
    --on-accent: #111113;
    --danger: #F2766F;
    --danger-muted: rgba(242, 118, 111, 0.16);
    --success: #4CC38A;
    --success-muted: rgba(76, 195, 138, 0.16);
    --warning: #E3B341;
    --warning-muted: rgba(227, 179, 65, 0.16);
    --shadow-pop: 0 4px 12px rgba(0, 0, 0, 0.35), 0 12px 32px rgba(0, 0, 0, 0.40);
    --ghost: rgba(64, 156, 255, 0.34);
    --ghost-edge: rgba(64, 156, 255, 0.80);
    --cover: #202022;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg-base); color: var(--text-1);
  font: 17px/1.65 var(--font-ui); letter-spacing: -0.005em;
  -webkit-font-smoothing: antialiased; word-break: keep-all; overflow-wrap: break-word;
}
img { max-width: 100%; height: auto; }
a { color: var(--accent); }
a:hover { color: var(--accent-hover); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
h1, h2, h3 { text-wrap: balance; }

.site-skip { position: absolute; left: 12px; top: -48px; z-index: 20; padding: 8px 12px; border-radius: var(--radius-s); background: var(--accent); color: var(--on-accent); text-decoration: none; }
.site-skip:focus { top: 12px; color: var(--on-accent); }
.site-nav { position: relative; z-index: 10; margin: 0; padding: 0; background: var(--bg-glass); -webkit-backdrop-filter: saturate(1.8) blur(14px); backdrop-filter: saturate(1.8) blur(14px); border-bottom: 1px solid var(--border-subtle); font: 400 14px/1.4 var(--font-ui); letter-spacing: -0.005em; }
.site-nav-in { display: flex; align-items: center; gap: 24px; height: 56px; max-width: 1120px; margin: 0 auto; padding: 0 32px; }
.site-brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text-1); font-weight: 600; font-size: 15px; letter-spacing: -0.01em; white-space: nowrap; text-decoration: none; }
.site-brand:hover { color: var(--text-1); }
.site-brand img { width: 24px; height: 24px; border: 0; border-radius: 6px; background: none; image-rendering: pixelated; }
.site-links { display: flex; gap: 2px; margin-left: auto; }
.site-links a, .site-menu-list a { display: inline-flex; align-items: center; gap: 4px; height: 32px; padding: 0 10px; border-radius: var(--radius-s); color: var(--text-2); font-size: 14px; white-space: nowrap; text-decoration: none; }
.site-links a:hover, .site-menu-list a:hover { background: var(--bg-hover); color: var(--text-1); }
.site-links a[aria-current], .site-menu-list a[aria-current] { color: var(--text-1); font-weight: 500; }
.site-ext { width: 12px; height: 12px; color: var(--text-3); flex: none; }
.site-menu { display: none; position: relative; margin: 0 0 0 auto; padding: 0; border: 0; border-radius: 0; background: none; }
.site-menu summary { list-style: none; display: grid; place-items: center; width: 44px; height: 44px; margin-right: -10px; border-radius: var(--radius-s); color: var(--text-1); cursor: pointer; }
.site-menu summary::-webkit-details-marker { display: none; }
.site-menu summary svg { width: 20px; height: 20px; }
.site-menu-list { position: absolute; right: -10px; top: 48px; min-width: 196px; padding: 6px; display: grid; background: var(--bg-raised); border-radius: var(--radius-m); box-shadow: 0 0 0 1px var(--border-default), var(--shadow-pop); }
.site-menu-list a { height: 44px; font-size: 16px; padding: 0 12px; }

.site-foot { margin: 112px 0 0; border-top: 1px solid var(--border-subtle); padding: 28px 0 40px; font: 400 13px/1.6 var(--font-ui); color: var(--text-3); }
.site-foot-in { max-width: 1120px; margin: 0 auto; padding: 0 32px; }
.site-foot-row { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 20px; }
.site-foot-row nav { display: flex; flex-wrap: wrap; gap: 4px 18px; margin-left: auto; }
.site-foot a { color: var(--text-2); text-decoration: none; }
.site-foot a:hover { color: var(--text-1); }
.site-foot p { margin: 10px 0 0; }

@media (max-width: 720px) {
  .site-nav-in { height: 52px; padding: 0 20px; }
  .site-links { display: none; }
  .site-menu { display: block; }
  .site-foot-in { padding: 0 20px; }
  .site-foot-row nav { margin-left: 0; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}