/* Base */
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  line-height: 1.5;
  color: #111;
  background: #fafafa;
}
h1, h2, h3 { margin: 0 0 .5rem; }
p { margin: 0 0 .75rem; }
ul { margin: 0 0 .75rem; padding-left: 1.1rem; }
ul.tight { margin-bottom: 1rem; }
.dim { color: #666; }
.emph { font-weight: 600; }
.link { color: #0b57d0; text-decoration: none; }
.link:hover { text-decoration: underline; }

/* Header */
.site-header {
  text-align: center;
  padding: 2rem 1rem 1.25rem;
  background: #fff;
  border-bottom: 1px solid #e7e7e7;
}
.site-header h1 { font-size: 2.25rem; letter-spacing: .5px; }
.tagline { font-size: 1.15rem; color: #333; margin-top: .35rem; }
.rule {
  height: 6px;
  background: #111;
  width: min(860px, 92%);
  margin: 1rem auto 0;
}

/* Layout (Flex) */
.container {
  display: flex;
  gap: 1.25rem;
  padding: 1.25rem;
  max-width: 1200px;
  margin: 0 auto;
}
.col {
  flex: 1 1 0%;
  background: #fff;
  border: 1px solid #e7e7e7;
  padding: 1rem;
  min-height: 100%;
}

/* Cards & small elements */
.card {
  border: 1px solid #e7e7e7;
  padding: .75rem;
  background: #fff;
}
.photo-card {
  margin: 1rem 0 0;
  border: 1px solid #e7e7e7;
  padding: .5rem;
  background: #fff;
}
.profile-photo {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid #d0d0d0;
}

/* Footer */
.site-footer {
  text-align: center;
  padding: 1rem;
  color: #555;
}

/* Simple responsiveness: stack columns on small screens */
@media (max-width: 900px) {
  .container { flex-direction: column; }
  .rule { width: 92%; }
}