html {
  box-sizing: border-box;
  font-size: 16px;
}
*, *:before, *:after {
  box-sizing: inherit;
}
body {
  margin: 0;
  font-family: 'Segoe UI', 'Roboto', Arial, sans-serif;
  background: #f7f9fb;
  color: #222;
}
header {
  background: #22223b;
  color: #fff;
  padding: 2rem 1rem 1rem 1rem;
  text-align: center;
}
header h1 {
  margin: 0 0 0.5rem 0;
  font-size: 2.25rem;
  letter-spacing: 1px;
}
.subtitle {
  font-size: 1.15rem;
  color: #c9ada7;
}
main {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
  padding: 2rem 1rem 3rem 1rem;
  max-width: 1200px;
  margin: 0 auto;
}
.feed-section {
  background: #fff;
  border-radius: 1rem;
  box-shadow: 0 2px 12px 0 rgba(34,34,59,0.08);
  flex: 1 1 320px;
  min-width: 300px;
  max-width: 380px;
  padding: 1.5rem 1.2rem 1.2rem 1.2rem;
  display: flex;
  flex-direction: column;
}
.feed-section h2 {
  margin-top: 0;
  margin-bottom: 1rem;
  color: #4a4e69;
  font-size: 1.5rem;
  letter-spacing: 0.5px;
  border-bottom: 2px solid #c9ada7;
  padding-bottom: 0.25rem;
}
.articles {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  min-height: 120px;
}
.article {
  background: #f6f6f8;
  border-radius: 0.65rem;
  padding: 1rem 1rem 0.8rem 1rem;
  box-shadow: 0 1px 4px 0 rgba(34,34,59,0.04);
  transition: box-shadow 0.2s;
}
.article:hover {
  box-shadow: 0 4px 24px 0 rgba(34,34,59,0.10);
}
.article-title {
  font-size: 1.07rem;
  font-weight: 600;
  margin: 0 0 0.35rem 0;
  color: #22223b;
  text-decoration: none;
  display: block;
  transition: color 0.18s;
}
.article-title:hover {
  color: #9a8c98;
  text-decoration: underline;
}
.article-date {
  font-size: 0.96rem;
  color: #6c757d;
  margin-bottom: 0.4rem;
}
.article-summary {
  font-size: 1rem;
  color: #444;
  margin-bottom: 0.2rem;
}
.loader {
  color: #4a4e69;
  font-size: 1.08rem;
  text-align: center;
  padding: 1.2rem 0;
}
@media (max-width: 1000px) {
  main {
    flex-direction: column;
    gap: 1.5rem;
    padding-top: 1.2rem;
  }
  .feed-section {
    max-width: 100%;
    min-width: 0;
  }
}
footer {
  background: #22223b;
  color: #fff;
  text-align: center;
  padding: 1.1rem 0 1.2rem 0;
  font-size: 1rem;
  margin-top: 2rem;
  letter-spacing: 0.2px;
}