/* Banner 轮播样式 */
.banner {
  position: relative;
  height: 100vh;
  min-height: 600px;
  overflow: hidden;
}

.banner-slider {
  position: relative;
  width: 100%;
  height: 100%;
}

.banner-item {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  display: none;
}

.banner-item:first-child {
  display: block;
}

.banner-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.8) 0%, rgba(118, 75, 162, 0.8) 100%);
}

.banner-content {
  position: relative;
  z-index: 2;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  color: white;
  max-width: 800px;
  padding: 0 20px;
}

.banner-title {
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  line-height: 1.2;
  animation: fadeInUp 1s ease-out;
}

.banner-subtitle {
  font-size: 1.5rem;
  margin-bottom: 2rem;
  line-height: 1.6;
  opacity: 0.9;
  animation: fadeInUp 1s ease-out 0.3s both;
}

.banner-btn {
  display: inline-block;
  padding: 15px 35px;
  background: #ff6b6b;
  color: white;
  text-decoration: none;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1.1rem;
  transition: all 0.3s ease;
  animation: fadeInUp 1s ease-out 0.6s both;
}

.banner-btn:hover {
  background: #ff5252;
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(255, 107, 107, 0.3);
}

/* 轮播指示器 */
.banner-indicators {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 3;
}

.indicator {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid white;
  background: transparent;
  cursor: pointer;
  transition: all 0.3s ease;
}

.indicator.active {
  background: white;
  transform: scale(1.2);
}

/* 轮播箭头 */
.banner-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 50px;
  height: 50px;
  background: rgba(255, 255, 255, 0.2);
  border: 2px solid white;
  border-radius: 50%;
  color: white;
  font-size: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  z-index: 3;
}

.banner-prev {
  left: 30px;
}

.banner-next {
  right: 30px;
}

.banner-arrow:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: translateY(-50%) scale(1.1);
}

/* 动画效果 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 响应式设计 */
@media (max-width: 768px) {
  .banner {
    height: 70vh;
    min-height: 400px;
  }
  
  .banner-title {
    font-size: 2.5rem;
  }
  
  .banner-subtitle {
    font-size: 1.2rem;
  }
  
  .banner-btn {
    padding: 12px 25px;
    font-size: 1rem;
  }
  
  .banner-arrow {
    width: 40px;
    height: 40px;
    font-size: 16px;
  }
  
  .banner-prev {
    left: 15px;
  }
  
  .banner-next {
    right: 15px;
  }
}

@media (max-width: 480px) {
  .banner-title {
    font-size: 2rem;
  }
  
  .banner-subtitle {
    font-size: 1rem;
  }
  
  .banner-content {
    text-align: center;
    align-items: center;
  }
}