:root {
  --max-width: 46rem;
  --fg: #1a1a1a;
  --muted: #5a5a5a;
  --link: #1155aa;
  --link-visited: #4a3a8a;
  --border: #e2e2e2;
  --bg: #ffffff;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  color: var(--fg);
  background: var(--bg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Georgia, "Times New Roman", serif;
  line-height: 1.6;
  font-size: 1.0625rem;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

a { color: var(--link); text-decoration: none; }
a:visited { color: var(--link-visited); }
a:hover { text-decoration: underline; }

/* Header */
.site-header {
  border-bottom: 1px solid var(--border);
  padding: 2rem 0 0;
  margin-bottom: 2.5rem;
}

.site-title a {
  color: var(--fg);
  font-size: 1.5rem;
  font-weight: 700;
}

.tagline {
  color: var(--muted);
  margin: 0.15rem 0 1.25rem;
  font-size: 1rem;
}

.site-nav ul {
  list-style: none;
  display: flex;
  gap: 1.5rem;
  margin: 0;
  padding: 0;
}

.site-nav a {
  display: inline-block;
  padding: 0.6rem 0;
  color: var(--fg);
  font-weight: 500;
  border-bottom: 2px solid transparent;
}

.site-nav a.active {
  border-bottom-color: var(--link);
  color: var(--link);
}

/* Content */
.page h1 {
  font-size: 1.9rem;
  margin-bottom: 1.25rem;
}

.page h3 {
  margin-top: 2.25rem;
  margin-bottom: 0.5rem;
  font-size: 1.15rem;
}

.page p, .page ul, .page ol {
  margin: 0 0 1.1rem;
}

.page ul, .page ol {
  padding-left: 1.4rem;
}

.page li { margin-bottom: 0.4rem; }

.page figure { margin: 0 0 1.5rem; }

.page figure img {
  max-width: 220px;
  height: auto;
  border: 1px solid var(--border);
}

hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 3rem;
  padding: 1.5rem 0 3rem;
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 480px) {
  .site-nav ul { gap: 1rem; flex-wrap: wrap; }
}

figure.float-right {
  float: right;
  margin: 0 0 1rem 1rem;
  max-width: 50%;
}
figure.float-left {
  float: left;
  margin: 0 1rem 1rem 0;
  max-width: 50%;
}