* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
}

body {
  background-color: #f5f7fa;
  color: #333;
  line-height: 1.6;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

header {
  text-align: center;
  margin-bottom: 30px;
  padding: 20px 0;
}

h1 {
  color: #2c3e50;
  margin-bottom: 10px;
  font-size: 2.5rem;
}

.search-box {
  max-width: 600px;
  margin: 20px auto;
  position: relative;
}

.search-box input {
  width: 100%;
  padding: 12px 20px;
  border: 1px solid #ddd;
  border-radius: 30px;
  font-size: 16px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  transition: all 0.3s;
}

.search-box input:focus {
  outline: none;
  border-color: #3498db;
  box-shadow: 0 2px 15px rgba(52, 152, 219, 0.2);
}

.categories {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 30px;
}

.category-btn {
  padding: 8px 16px;
  margin: 5px;
  background-color: #fff;
  border: 1px solid #ddd;
  border-radius: 20px;
  cursor: pointer;
  transition: all 0.3s;
}

.category-btn:hover,
.category-btn.active {
  background-color: #3498db;
  color: white;
  border-color: #3498db;
}

.websites-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 20px;
}

.website-card {
  background-color: white;
  border-radius: 10px;
  padding: 20px;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.08);
  transition: transform 0.3s, box-shadow 0.3s;
  text-align: center;
}

.website-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.website-icon {
  width: 100px;
  height: 50px;
  margin: 0 auto 15px;
  background-color: #f8f9fa;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: #3498db;
}

.website-name {
  font-weight: 600;
  margin-bottom: 10px;
  color: #2c3e50;
}

.website-desc {
  font-size: 14px;
  color: #7f8c8d;
  margin-bottom: 15px;
}

.website-link {
  display: inline-block;
  padding: 8px 16px;
  background-color: #3498db;
  color: white;
  text-decoration: none;
  border-radius: 5px;
  font-size: 14px;
  transition: background-color 0.3s;
}

.website-link:hover {
  background-color: #2980b9;
}

footer {
  text-align: center;
  margin-top: 40px;
  padding: 20px;
  color: #7f8c8d;
  font-size: 14px;
}

@media (max-width: 768px) {
  .websites-grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  }
}

@media (max-width: 480px) {
  .websites-grid {
    grid-template-columns: 1fr;
  }

  h1 {
    font-size: 2rem;
  }
}