:root {
  --header-gap: 18px;
  --ui-font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "Segoe UI", sans-serif;
  --bg: #f2f2ef;
  --ink: #171717;
  --text: #171717;
  --muted: #5e5e5a;
  --line: rgba(23, 23, 23, 0.12);
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.08);
  --hero-bg: linear-gradient(135deg, rgba(247, 247, 244, 0.96), rgba(255, 255, 255, 0.92));
  --paper: rgba(255, 255, 255, 0.82);
  --paper-strong: #ffffff;
  --accent: #777;
  --accent-deep: #5e5e5a;
  --logo-shadow: drop-shadow(0 16px 26px rgba(0, 0, 0, 0.16));
  --logo-light-display: block;
  --logo-dark-display: none;
}

html {
  color-scheme: light dark;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: "New York", "Iowan Old Style", "Palatino Linotype", Georgia, "Times New Roman", serif;
  color: var(--page-text, var(--text));
  background:
    radial-gradient(circle at top, rgba(255, 255, 255, 0.08), transparent 28%),
    linear-gradient(
      180deg,
      color-mix(in srgb, var(--bg) 96%, #ffffff 4%) 0%,
      var(--bg) 44%,
      color-mix(in srgb, var(--bg) 92%, #000000 8%) 100%
    );
}

a {
  color: inherit;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1a1a1a;
    --ink: #f1f1ee;
    --text: #f1f1ee;
    --muted: #c7c7c2;
    --line: rgba(241, 241, 238, 0.1);
    --shadow: 0 24px 60px rgba(0, 0, 0, 0.34);
    --hero-bg: linear-gradient(135deg, rgba(40, 40, 40, 0.94), rgba(24, 24, 24, 0.9));
    --paper: rgba(33, 33, 33, 0.82);
    --paper-strong: rgba(28, 28, 28, 0.94);
    --accent: #9f9f9a;
    --accent-deep: #d4d4cf;
    --logo-shadow: drop-shadow(0 18px 34px rgba(0, 0, 0, 0.42));
    --logo-light-display: none;
    --logo-dark-display: block;
  }
}

.site-header {
  display: grid;
  justify-items: center;
  gap: var(--header-gap);
}

.brand-mark {
  display: flex;
  justify-content: center;
}

.brand-mark img {
  width: min(255px, 56vw);
  height: auto;
  filter: var(--logo-shadow);
}

.logo-light {
  display: var(--logo-light-display);
}

.logo-dark {
  display: var(--logo-dark-display);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  color: var(--muted);
  font-family: var(--ui-font);
  font-size: 14px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-align: center;
}

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

.site-nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.site-nav a,
.site-nav span {
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(127, 127, 127, 0.08);
  border: 1px solid var(--line);
}

.site-nav .current {
  background: rgba(127, 127, 127, 0.14);
}

.site-footer {
  margin-top: 28px;
  display: flex;
  justify-content: center;
}

.site-footer p {
  margin: 0;
  padding: 0;
  color: color-mix(in srgb, var(--bg) 42%, var(--muted) 58%);
  font-family: var(--ui-font);
  font-size: 14px;
  letter-spacing: 0.03em;
  text-align: center;
  text-shadow:
    0 1px 0 rgba(255, 255, 255, 0.24),
    0 -1px 0 rgba(0, 0, 0, 0.16);
  opacity: 0.82;
}

@media (prefers-color-scheme: dark) {
  .site-footer p {
    color: color-mix(in srgb, var(--bg) 34%, var(--muted) 66%);
    text-shadow:
      0 1px 0 rgba(255, 255, 255, 0.08),
      0 -1px 0 rgba(0, 0, 0, 0.42);
  }
}

@media (max-width: 720px) {
  .brand-mark img {
    width: min(255px, 64vw);
  }

  .topbar {
    flex-direction: column;
  }
}