* { box-sizing: border-box; }

body {
  font-family: system-ui, sans-serif;
  line-height: 1.6;
  color: #222;
  background: #f5f3ee;
  margin: 0;
}

header, main, footer {
  max-width: 760px;
  margin: 0 auto;
  padding: 1.5rem;
}

header { border-bottom: 2px solid #2a6f7a; }
footer { border-top: 1px solid #ccc; color: #666; font-size: 0.9rem; }

h1 { color: #2a6f7a; margin-bottom: 0.25rem; }
h2 { color: #333; margin-top: 2rem; }

a { color: #2a6f7a; }
a:hover { text-decoration: underline; }

nav { margin-top: 0.5rem; font-size: 0.95rem; }

.tandem-list { list-style: none; padding: 0; }
.tandem-list li {
  background: white;
  padding: 0.75rem 1rem;
  margin-bottom: 0.5rem;
  border-left: 4px solid #2a6f7a;
}

img { max-width: 100%; height: auto; }