:root {
  --main: #459aaa;
  --text: #222;
  --muted: #666;
  --border: #ddd;
  --bg: #ffffff;
  --soft: #d1f4ff;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Yu Gothic", "YuGothic", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.75;
}

header {
  border-bottom: 1px solid var(--border);
  background: var(--soft);
}

.site-header {
  max-width: 960px;
  margin: 0 auto;
  padding: 28px 20px 20px;
}

.site-title {
  font-size: 28px;
  font-weight: 700;
  margin: 0;
}

.site-subtitle {
  color: var(--muted);
  margin-top: 4px;
}

nav {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 20px 14px;
}

nav a {
  margin-right: 20px;
  color: var(--main);
  text-decoration: none;
  font-weight: 600;
}

main {
  max-width: 960px;
  margin: 36px auto;
  padding: 0 20px;
}

h1, h2 {
  line-height: 1.3;
}

h1 {
  border-bottom: 2px solid var(--main);
  padding-bottom: 8px;
}

.card {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
  margin: 20px 0;
  background: #fff;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.pub-list li {
  margin-bottom: 18px;
}

.pub-title {
  font-weight: 700;
}

.pub-meta {
  color: var(--muted);
}

.links a {
  margin-right: 10px;
}

footer {
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 14px;
  max-width: 960px;
  margin: 48px auto 0;
  padding: 20px;
}