body {
  font-family: Arial, sans-serif;
  background: #f6f7fb;
  margin: 0;
}

.container {
  max-width: 900px;
  margin: 60px auto;
  padding: 20px;
}

h1 {
  text-align: center;
}

.search {
  width: 100%;
  padding: 14px;
  font-size: 18px;
  border-radius: 12px;
  border: 1px solid #ddd;
  margin-top: 20px;
}

.topics {
  margin-top: 20px;
}

.topic {
  display: inline-block;
  padding: 10px 16px;
  border: 1px solid #ddd;
  border-radius: 999px;
  margin: 5px;
  cursor: pointer;
  background: white;
}

.topic:hover {
  background: #eee;
}

.card {
  background: white;
  padding: 16px;
  margin-top: 14px;
  border-radius: 12px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.title {
  font-weight: bold;
}

.summary {
  margin-top: 10px;
}

.link {
  display: inline-block;
  margin-top: 10px;
}

.info {
  margin-top: 12px;
  color: #666;
  text-align: center;
}