:root {
  --bg: #ffffff;
  --fg: #111111;
  --muted: #555555;
  --border: #e6e6e6;
  --link: #0b57d0;
  --link-visited: #6f2dbd;

  --maxw: 68ch;
  --pad: 1.25rem;
  --radius: 10px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0b0b;
    --fg: #f2f2f2;
    --muted: #b6b6b6;
    --border: #242424;
    --link: #8ab4f8;
    --link-visited: #d7aefb;
  }
}

* { box-sizing: border-box; }

html { color-scheme: light dark; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  line-height: 1.6;
}

header, main, footer {
  max-width: var(--maxw);
  margin: 1rem auto;
  padding: var(--pad);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: color-mix(in oklab, var(--bg) 92%, var(--fg));
}

nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
}

nav a {
  text-decoration: none;
  color: var(--fg);
  padding: 0.15rem 0.35rem;
  border-radius: 6px;
}

nav a[aria-current="page"] {
  background: color-mix(in oklab, var(--fg) 8%, transparent);
}

main {
  padding-top: calc(var(--pad) * 1.25);
  padding-bottom: calc(var(--pad) * 1.25);
}

h1 {
  line-height: 1.2;
  margin: 0 0 0.75rem 0;
  font-size: 1.9rem;
  letter-spacing: -0.02em;
}

.h-card .u-photo {
  width: 160px;
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 0 0.75rem 0;
  border-radius: var(--radius);
}

h2 {
  margin: 1.75rem 0 0.5rem 0;
  font-size: 1.1rem;
  letter-spacing: -0.01em;
}

section {
  padding: 0.85rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: color-mix(in oklab, var(--bg) 92%, var(--fg));
  margin: 1rem 0;
}

p {
  margin: 0 0 1rem 0;
  color: var(--fg);
}

.p-note {
  color: var(--muted);
}

ul {
  padding-left: 1.1rem;
}

a {
  color: var(--link);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.16em;
}

a:visited {
  color: var(--link-visited);
}

a:hover {
  text-decoration-thickness: 0.14em;
}

:focus-visible {
  outline: 2px solid color-mix(in oklab, var(--link) 65%, var(--fg));
  outline-offset: 3px;
  border-radius: 6px;
}

footer {
  color: var(--muted);
  font-size: 0.95rem;
}

/* Skip link (keyboard-only) */
.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
  width: auto;
  height: auto;
  padding: 0.5rem 0.75rem;
  background: var(--bg);
  color: var(--fg);
  border: 2px solid var(--fg);
  border-radius: var(--radius);
}