/* 继承咨询设计服务页面的全局样式 */
:root {
  --primary-color: #1e88e5;
  --primary-dark: #0d47a1;
  --secondary-color: #42a5f5;
  --light-blue: #e3f2fd;
  --white: #ffffff;
  --dark-gray: #333333;
  --light-gray: #f5f5f5;
  --border-radius: 12px;
  --box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

/* 标准卡片 */
.standards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  margin-bottom: 120px;
}

.standard-card {
  background: var(--white);
  border-radius: var(--border-radius);
  padding: 30px;
  text-align: center;
  box-shadow: var(--box-shadow);
  transition: transform 0.3s ease;
}

.standard-card:hover {
  transform: translateY(-10px);
}

.standard-icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  color: var(--white);
  font-size: 2rem;
}

.standard-card h3 {
  font-size: 1.3rem;
  margin-bottom: 15px;
  color: var(--primary-dark);
}

.standard-card p {
  font-size: 1rem;
  color: var(--dark-gray);
  margin-bottom: 20px;
}

.btn-outline {
  display: inline-block;
  padding: 8px 20px;
  border: 2px solid var(--primary-color);
  border-radius: 30px;
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
}

.btn-outline:hover {
  background: var(--primary-color);
  color: var(--white);
}

/* 重大专项 */
.major-project {
  padding: 80px 0;
  background-color: var(--light-gray);
}

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

.project-header {
  text-align: center;
  margin-bottom: 40px;
}

.project-header h3 {
  font-size: 1.5rem;
  color: var(--primary-dark);
  margin-bottom: 15px;
}

.project-tags {
  display: flex;
  justify-content: center;
  gap: 15px;
}

.tag {
  background: rgba(30, 136, 229, 0.1);
  color: var(--primary-dark);
  padding: 5px 15px;
  border-radius: 20px;
  font-size: 0.9rem;
}

.project-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}

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

.feature-card, .participants-card, .tech-card, .stats-card {
  background: var(--white);
  border-radius: var(--border-radius);
  padding: 25px;
  box-shadow: var(--box-shadow);
  margin-bottom: 30px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 15px;
  margin-top: 15px;
}

.feature-item {
  background: var(--light-blue);
  padding: 15px;
  border-radius: var(--border-radius);
  text-align: center;
  border: 1px solid var(--secondary-color);
}

.feature-icon {
  width: 30px;
  height: 30px;
  background: var(--primary-color);
  color: var(--white);
  border-radius: 50%;
  margin: 0 auto 10px;
  line-height: 30px;
  font-size: 0.9rem;
}

.participants-card img {
  width: 100%;
  border-radius: var(--border-radius);
  margin-top: 15px;
}

.tech-tree {
  border-left: 3px solid var(--primary-color);
  padding-left: 25px;
  margin-top: 15px;
}

.tech-node {
  margin-bottom: 20px;
}

.node-header {
  color: var(--primary-dark);
  font-weight: 600;
  margin-bottom: 10px;
}

.tech-node ul {
  padding-left: 20px;
}

.tech-node li {
  margin-bottom: 8px;
  color: var(--dark-gray);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
  gap: 15px;
}

.stat-item {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: var(--white);
  padding: 20px;
  border-radius: var(--border-radius);
  text-align: center;
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 5px;
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.9;
}