:root {
  color-scheme: dark;
  --bg: #0c1015;
  --bg2: #0f151d;
  --panel: #111820;
  --panel2: #16202b;
  --line: #1f2a35;
  --line2: #36424e;
  --border: var(--line);
  --border2: var(--line2);
  --text: #edf1f5;
  --body: #a0adb9;
  --muted: #82909e;
  --faint: #6b7a89;
  --accent: #83b6ed;
  --sans: "IBM Plex Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, monospace;
  font-family: var(--sans);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}

.site-navigation {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: max(28px, env(safe-area-inset-top)) 5.5vw 28px;
  background: var(--bg);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.5;
}

.site-navigation a {
  color: inherit;
  text-decoration: none;
  pointer-events: auto;
}

.site-navigation a:hover,
.site-navigation a[aria-current],
.site-navigation summary:hover {
  color: var(--text);
}

.site-navigation a:focus-visible,
.site-navigation summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 5px;
}

.site-wordmark {
  color: var(--text);
  font-weight: 600;
  font-size: 20px;
  letter-spacing: -0.01em;
}

.site-brand-dot {
  color: var(--accent);
}

.site-links {
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 12px;
  color: var(--muted);
}

/* Start Solver: a small solid button, the reverse of the page colours. */
.site-links .site-launch {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--bg);
  background: var(--text);
  border-radius: 6px;
  padding: 6px 12px;
  font-size: 13px;
  font-weight: 500;
  line-height: 1.4;
  white-space: nowrap;
  transition: opacity 0.15s;
}

.site-launch svg {
  width: 10px;
  height: 10px;
}

.site-links .site-launch:hover {
  color: var(--bg);
  opacity: 0.85;
}

.site-github {
  display: flex;
}

.site-theme {
  display: flex;
  padding: 4px;
  border: 0;
  background: none;
  color: inherit;
  cursor: pointer;
}

.site-theme[hidden] {
  display: none;
}

.site-theme:hover {
  color: var(--text);
}

.site-theme-sun,
:root[data-theme="dark"] .site-theme-moon {
  display: none;
}

:root[data-theme="dark"] .site-theme-sun {
  display: block;
}

.site-more {
  position: relative;
  margin: 0;
  pointer-events: auto;
}

.site-more summary {
  cursor: pointer;
  list-style: none;
  font-size: inherit;
  color: inherit;
}

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

.site-more > div {
  position: absolute;
  right: 0;
  top: 28px;
  min-width: 145px;
  padding: 16px;
  border: 1px solid var(--line2);
  border-radius: 12px;
  background: var(--bg);
  display: grid;
  gap: 16px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
  padding: 28px 5.5vw;
  margin-top: 40px;
  border-top: 1px solid var(--line);
  font: 12px var(--sans);
  color: var(--muted);
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

.site-footer a {
  color: inherit;
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--text);
}

@media (max-width: 700px) {
  .site-navigation {
    padding: max(20px, env(safe-area-inset-top)) 6vw 20px;
  }

  .site-links {
    gap: 12px;
    font-size: 10px;
  }

  .site-links .site-launch {
    padding: 5px 10px;
    font-size: 12px;
  }

  .site-footer {
    padding: 24px 6vw;
  }
}

@media (max-width: 360px) {
  .site-github,
  .site-theme {
    display: none;
  }
}