:root {
  color-scheme: light dark;
  --paper: #f3f6fb;
  --surface: #ffffff;
  --ink: #111a2b;
  --muted: #566176;
  --line: #dbe2ec;
  --faint: #e9eef5;
  --accent: #2a5cdb;
  --accent-hover: #1f4bbd;
  --on-accent: #ffffff;
  --icon-top: #5494ff;
  --icon-bottom: #295cdb;

  --sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, sans-serif;
  --measure: 34rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #0b111c;
    --surface: #131b2a;
    --ink: #e8edf5;
    --muted: #98a3b6;
    --line: #232f44;
    --faint: #1a2436;
    --accent: #7aa6ff;
    --accent-hover: #9cbcff;
    --on-accent: #0a1630;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, p, ol { margin: 0; }
a { color: var(--accent); text-underline-offset: 0.18em; text-decoration-thickness: 1px; }
a:hover { color: var(--accent-hover); }
:focus-visible { outline: 2.5px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

.wrap { width: min(70rem, 100% - 2rem); margin-inline: auto; }

/* The app's name, set beside its icon. */
.brand {
  display: inline-flex; align-items: center; gap: 0.7rem;
  font-weight: 700; font-size: 1.15rem; letter-spacing: -0.02em;
  color: var(--ink); text-decoration: none;
}
.brand img { width: 2.25rem; height: 2.25rem; border-radius: 0.55rem; }
.brand:hover { color: var(--ink); }

.button {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.55rem;
  font: inherit; font-weight: 650; font-size: 1.0625rem; line-height: 1;
  padding: 1.05rem 1.5rem; border: 0; border-radius: 0.9rem;
  background: var(--accent); color: var(--on-accent); text-decoration: none; cursor: pointer;
  transition: background-color 120ms ease, transform 120ms ease;
}
.button:hover { background: var(--accent-hover); color: var(--on-accent); }
.button:active { transform: scale(0.98); }

.fine { font-size: 0.9375rem; color: var(--muted); }

.site-footer {
  padding-block: 2.5rem 3rem;
  border-top: 1px solid var(--line);
  font-size: 0.9375rem; color: var(--muted);
}
.site-footer .wrap { display: flex; flex-wrap: wrap; gap: 0.75rem 2rem; justify-content: space-between; }
.site-footer nav { display: flex; gap: 1.5rem; }