body {
  margin: 0;
  padding: 0;
  font-family: "Helvetica Neue", sans-serif;
  background-color: #f8f8f8;
  color: #222;
  line-height: 1.8;
}
header {
  text-align: center;
  padding: 3rem 1rem 2rem;
}
h1 {
  font-size: 3rem;
  margin: 0;
  letter-spacing: 0.1em;
}
.tagline {
  font-size: 1rem;
  color: #666;
  margin-top: 0.5rem;
}
nav ul {
  list-style: none;
  padding: 0;
  margin-top: 2rem;
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}
nav a {
  text-decoration: none;
  color: #333;
  font-weight: 500;
}
main {
  max-width: 700px;
  margin: 0 auto;
  padding: 2rem 1rem;
}
.article-list {
  list-style: none;
  padding: 0;
}
.article-list li {
  margin-bottom: 1.5rem;
}
.article-list .date {
  display: block;
  font-size: 0.85rem;
  color: #999;
  margin-bottom: 0.2rem;
}
.article-list a {
  text-decoration: none;
  color: #111;
  font-size: 1.1rem;
}
footer {
  text-align: center;
  padding: 3rem 1rem;
  font-size: 0.8rem;
  color: #aaa;
}