.tools-intro {
  text-align: center;
  margin-bottom: 2rem;
}

.tools-intro h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
  color: #333;
}

.tools-intro p {
  font-size: 1.1rem;
  color: #666;
  max-width: 700px;
  margin: 0 auto;
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.tool-card {
  background: white;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.tool-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.tool-icon {
  height: 150px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 3rem;
}

.tool-content {
  padding: 1.5rem;
}

.tool-content h3 {
  margin-bottom: 0.5rem;
  color: #333;
}

.tool-content p {
  color: #666;
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

.btn {
  display: inline-block;
  padding: 0.7rem 1.5rem;
  background: #667eea;
  color: white;
  text-decoration: none;
  border-radius: 5px;
  font-weight: 500;
  transition: background 0.3s ease;
  border: none;
  cursor: pointer;
}

.btn:hover {
  background: #5a6fd8;
}

/* 结构化数据 */
script[type="application/ld+json"] {
  display: none;
}

@media (max-width: 768px) {
  .tools-grid {
    grid-template-columns: 1fr;
  }

  header h1 {
    font-size: 2rem;
  }

  .tools-intro h2 {
    font-size: 1.7rem;
  }
}