/* Hero区域样式 */
.hero {
  padding: 8rem 0 3rem; /* 减少底部内边距，使下方内容上移 */
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: var(--text-white);
  position: relative;
  overflow: hidden;
}

.hero .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  position: relative;
  z-index: 2;
}

.hero-content {
  flex: 1;
  transform: translateY(-1rem); /* 轻微上移 */
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.5rem;
}

.hero-title .highlight {
  color: var(--accent-color);
  position: relative;
  display: inline-block;
}

.hero-title .highlight::after {
  content: "";
  position: absolute;
  bottom: 5px;
  left: 0;
  width: 100%;
  height: 8px;
  background-color: rgba(245, 158, 11, 0.3);
  z-index: -1;
}

.hero-subtitle {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  margin-top: 3rem; /* 增加按钮上边距，使其下移 */
}

.hero-image {
  flex: 1;
  position: relative;
  transform: translateY(-1rem); /* 轻微上移 */
}

.hero-image img {
  width: 100%;
  max-width: 600px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.floating-elements {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.floating-element {
  position: absolute;
  width: 60px;
  height: 60px;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--text-white);
  animation: float 6s infinite ease-in-out;
}

.fe-1 {
  top: 10%;
  left: 10%;
  animation-delay: 0s;
}

.fe-2 {
  top: 20%;
  right: 5%;
  animation-delay: 1.5s;
}

.fe-3 {
  bottom: 15%;
  left: 15%;
  animation-delay: 3s;
}

.fe-4 {
  bottom: 25%;
  right: 10%;
  animation-delay: 4.5s;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-20px);
  }
}

.hero-wave {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  line-height: 0;
}

/* 特性区域样式 */
.features {
  padding: 3rem 0; /* 减少顶部内边距 */
  background-color: var(--bg-white);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.feature-card {
  background-color: var(--bg-white);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow);
  transition: var(--transition);
  text-align: center;
}

.feature-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
}

.feature-icon {
  width: 70px;
  height: 70px;
  background-color: var(--primary-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  font-size: 1.75rem;
  color: var(--text-white);
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.feature-description {
  color: var(--text-light);
}

/* AI教育应用区域样式 */
.ai-education {
  padding: 5rem 0;
  background-color: var(--bg-light);
}

.ai-education-content {
  display: flex;
  align-items: center;
  gap: 3rem;
  margin-top: 3rem;
}

.ai-education-image {
  flex: 1;
  position: relative;
}

.ai-education-image img {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.ai-animation {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.ai-circle {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background-color: rgba(79, 70, 229, 0.1);
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation: pulse 2s infinite;
}

.ai-pulse {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  border: 2px solid rgba(79, 70, 229, 0.3);
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation: pulse 2s infinite 0.5s;
}

@keyframes pulse {
  0% {
    transform: translate(-50%, -50%) scale(0.8);
    opacity: 0.8;
  }
  50% {
    transform: translate(-50%, -50%) scale(1);
    opacity: 0.5;
  }
  100% {
    transform: translate(-50%, -50%) scale(0.8);
    opacity: 0.8;
  }
}

.ai-education-features {
  flex: 1;
}

.ai-feature {
  display: flex;
  align-items: flex-start;
  margin-bottom: 2rem;
}

.ai-feature:last-child {
  margin-bottom: 0;
}

.ai-feature-icon {
  width: 50px;
  height: 50px;
  background-color: var(--primary-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 1.5rem;
  font-size: 1.25rem;
  color: var(--text-white);
  flex-shrink: 0;
}

.ai-feature-content h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.ai-feature-content p {
  color: var(--text-light);
}

/* 演示视频区域样式 */
.demo {
  padding: 5rem 0;
  background-color: var(--bg-white);
}

.video-container {
  max-width: 900px;
  margin: 0 auto;
}

.video-wrapper {
  position: relative;
  padding-bottom: 56.25%; /* 16:9 比例 */
  height: 0;
  overflow: hidden;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
}

.video-placeholder {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--bg-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.video-placeholder img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.play-button {
  position: absolute;
  width: 80px;
  height: 80px;
  background-color: var(--primary-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: var(--text-white);
  transition: var(--transition);
}

.play-button:hover {
  background-color: var(--primary-dark);
  transform: scale(1.1);
}

/* 客户案例区域样式 */
.case-studies {
  padding: 5rem 0;
  background-color: var(--bg-light);
}

.case-studies-slider {
  display: flex;
  gap: 2rem;
  overflow-x: hidden;
  margin-bottom: 2rem;
}

.case-study-card {
  flex: 0 0 calc(33.333% - 1.33rem);
  background-color: var(--bg-white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.case-study-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
}

.case-study-image {
  height: 200px;
  overflow: hidden;
}

.case-study-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.case-study-card:hover .case-study-image img {
  transform: scale(1.05);
}

.case-study-content {
  padding: 1.5rem;
}

.case-study-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.case-study-description {
  color: var(--text-light);
  margin-bottom: 1rem;
}

.case-study-link {
  display: inline-flex;
  align-items: center;
  font-weight: 600;
}

.case-study-link i {
  margin-left: 0.5rem;
  transition: var(--transition);
}

.case-study-link:hover i {
  transform: translateX(5px);
}

.slider-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
}

.slider-prev,
.slider-next {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--bg-white);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
}

.slider-prev:hover,
.slider-next:hover {
  background-color: var(--primary-color);
  color: var(--text-white);
  border-color: var(--primary-color);
}

.slider-dots {
  display: flex;
  gap: 0.5rem;
}

.slider-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--border-color);
  cursor: pointer;
  transition: var(--transition);
}

.slider-dot.active {
  background-color: var(--primary-color);
  width: 30px;
  border-radius: 5px;
}

/* 响应式设计 */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 3rem;
  }

  .ai-education-content {
    flex-direction: column;
  }

  .case-study-card {
    flex: 0 0 calc(50% - 1rem);
  }
}

@media (max-width: 768px) {
  .hero .container {
    flex-direction: column;
    text-align: center;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .hero-buttons {
    justify-content: center;
  }

  .ai-feature {
    flex-direction: column;
    text-align: center;
  }

  .ai-feature-icon {
    margin: 0 auto 1rem;
  }

  .case-study-card {
    flex: 0 0 100%;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .feature-card {
    padding: 1.5rem;
  }
}