:root {
  --bg: #fffffb;
  --text: #333333;
  --heading: #000000;
  --link: #0000ee;
  --link-visited: #551a8b;
  --avatar-ring: #6c5ce7;
  --max-width: 640px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 48px 24px 80px;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', sans-serif;
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

main, .post {
  max-width: var(--max-width);
  margin: 0 auto;
}

.avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  border: 4px solid var(--avatar-ring);
  object-fit: cover;
  display: block;
  margin-bottom: 24px;
}

h1.site-title, h2.site-title {
  font-family: 'Inter', sans-serif;
  font-weight: 400;
  font-size: 26px;
  color: var(--heading);
  margin: 0 0 40px;
}

h2.category {
  font-family: 'Inter', sans-serif;
  font-weight: 400;
  font-size: 19px;
  color: var(--text);
  margin: 40px 0 16px;
}

ul.link-list {
  list-style: none;
  margin: 0 0 8px;
  padding: 0;
}

ul.link-list li {
  margin: 0 0 18px;
}

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

a:visited {
  color: var(--link-visited);
}

.note {
  color: var(--text);
  font-family: 'Inter', sans-serif;
}

.about {
  margin-top: 64px;
  padding-top: 32px;
  text-align: center;
  font-size: 15px;
}

.about .about-title {
  letter-spacing: 0.03em;
  color: #666;
  margin-bottom: 12px;
}

.about p {
  max-width: 520px;
  margin: 0 auto;
  color: #555;
}

/* Single post page */
.post-byline {
  color: #666;
  font-size: 15px;
  margin-bottom: 8px;
}

.post-title {
  font-family: 'Inter', sans-serif;
  font-size: 34px;
  font-weight: 400;
  margin: 0 0 32px;
  line-height: 1.4;
}

.post-body p {
  margin: 0 0 22px;
}

.back-link {
  display: inline-block;
  margin-bottom: 32px;
  font-family: 'Inter', sans-serif;
  font-size: 14px;
}

@media (max-width: 480px) {
  body { padding: 32px 18px 60px; }
}