:root {
  --text: #333;
  --background: #fdfdfd;
  --primary: #4a9;
  --link: #268bd2;
  --light-gray: #eee;
}

body {
  font-family: "Helvetica Neue", sans-serif;
  background: var(--background);
  color: var(--text);
  margin: 0;
  padding: 0;
  line-height: 1.7;
}

.container {
  max-width: 720px;
  margin: 40px auto;
  padding: 0 20px;
}

header {
  text-align: center;
  margin-bottom: 40px;
}

.avatar {
  width: 200px;
  border-radius: 5%;
  margin-bottom: 10px;
}

h1 {
  font-size: 1.8em;
  margin: 0.2em 0;
}

.subtitle {
  color: #666;
  font-size: 0.95em;
}

nav {
  margin-top: 15px;
}

nav a {
  margin: 0 10px;
  text-decoration: none;
  color: var(--link);
  font-weight: 500;
}

section {
  margin-bottom: 40px;
}

h2 {
  font-size: 1.3em;
  border-bottom: 1px solid var(--light-gray);
  padding-bottom: 5px;
  margin-bottom: 15px;
}

ul {
  list-style-type: disc;
  padding-left: 20px;
}

.post h3 {
  margin: 0;
  font-size: 1.1em;
}

.post .date {
  font-size: 0.85em;
  color: #999;
  margin-bottom: 5px;
}

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

a:hover {
  text-decoration: underline;
}

footer {
  text-align: center;
  font-size: 0.9em;
  color: #aaa;
  margin-top: 60px;
}