:root {
  --font-body: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --text: #1f2937;
  --muted: #6b7280;
  --bg: #ffffff;
  --link: #2563eb;
  --border: #e5e7eb;
  --tag-bg: #f3f4f6;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

.container {
  max-width: 72ch;
  margin: 0 auto;
  padding: 1.5rem;
}

.site-header {
  border-bottom: 1px solid var(--border);
}
.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: 72ch;
  margin: 0 auto;
  padding: 1rem 1.5rem;
}
.brand {
  font-weight: 700;
  text-decoration: none;
  color: inherit;
}
.nav {
  list-style: none;
  display: flex;
  gap: 1rem;
  margin: 0;
  padding: 0;
}
.nav a { text-decoration: none; color: inherit; }
.nav a:hover, .nav a:focus { text-decoration: underline; }

h1, h2, h3 { line-height: 1.25; }
h1 { font-size: 2rem; margin: 1.5rem 0 1rem; }
h2 { font-size: 1.5rem; margin: 1.25rem 0 0.75rem; }
h3 { font-size: 1.25rem; margin: 1rem 0 0.5rem; }

p { margin: 0.75rem 0; }

a { color: var(--link); }
a:hover, a:focus { text-decoration: underline; }

:focus-visible { outline: 2px solid var(--link); outline-offset: 2px; }

.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 3rem;
  padding: 1.5rem;
  color: var(--muted);
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
  padding: 0;
  list-style: none;
}
.card {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
}
.card-title { margin: 0 0 0.25rem; font-size: 1.125rem; }
.card-summary { margin: 0.25rem 0 0.5rem; }

.tags { margin: 0.5rem 0; }
.tag {
  display: inline-block;
  background: var(--tag-bg);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.1rem 0.5rem;
  margin-right: 0.25rem;
  font-size: 0.875rem;
}

.btn {
  text-decoration: none;
  color: var(--link);
}

.year-heading { margin-top: 1.25rem; }
.pubs { padding-left: 1.25rem; }
.pub-item { margin: 0.4rem 0; }