:root {
  --fg: #1a1a1a;
  --muted: #555;
  --bg: #fafafa;
  --card: #ffffff;
  --accent: #0b6fa4;
  --border: #d8d8d8;
  --code-bg: #f1f1f1;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        "Helvetica Neue", Arial, sans-serif;
}

.page {
  max-width: 880px;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
}

h1, h2, h3 { line-height: 1.25; }
h1 { font-size: 2rem; margin: 0 0 .5rem; }
h2 { font-size: 1.35rem; margin: 2.25rem 0 .75rem; border-bottom: 1px solid var(--border); padding-bottom: .25rem; }
h3 { font-size: 1.1rem; margin: 1.5rem 0 .5rem; }

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

p, ul { margin: 0 0 1rem; }
ul { padding-left: 1.25rem; }
li { margin: .15rem 0; }

code {
  background: var(--code-bg);
  padding: .1em .35em;
  border-radius: 3px;
  font-size: .9em;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.lede {
  font-size: 1.1rem;
  color: var(--muted);
  margin: 0 0 1.5rem;
}

.diagram {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
  margin: 1.5rem 0 2rem;
}

.diagram svg {
  display: block;
  width: 100%;
  height: auto;
}

.project-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin: 1rem 0 2rem;
}
@media (min-width: 720px) {
  .project-grid { grid-template-columns: 1fr 1fr 1fr; }
}

.project-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem 1.1rem;
}
.project-card h3 { margin-top: 0; }
.project-card p { font-size: .95rem; color: var(--muted); }
.project-card ul { font-size: .9rem; }

.site-footer {
  margin-top: 3rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  font-size: .85rem;
  color: var(--muted);
}