body {
  background-color: #ffffff;
}
.btn-secondary {
  background-color: white;
  color: var(--primary-color);
  border: 1px solid var(--primary-color);
}

.btn-secondary:hover {
  background-color: #f1f3ff;
  color: var(--secondary-color);
}

/* 头部区域 */
.index_header {
  padding: 180px 0 100px;
  position: relative;
  z-index: 1;
  text-align: center;
  background: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);
}

.index_header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(120deg, #6c63ff 0%, #5b8cff 100%);
  background-size: cover;
  z-index: -1;
}

.index_header h1 {
  font-size: 48px;
  margin-bottom: 20px;
  color: var(--light-color);
}

.index_header p {
  font-size: 20px;
  color: var(--light-color);
  max-width: 800px;
  margin: 0 auto 40px;
}

.index_header-btns {
  display: flex;
  justify-content: center;
  gap: 20px;
}

/* 特性部分 */
.index_features {
  padding: 0 0 100px 0;
}

.section_title {
  text-align: center;
  margin-bottom: 60px;
}

.section_title h2 {
  font-size: 36px;
  color: var(--dark-color);
  margin-bottom: 15px;
}

.section_title p {
  color: #636e72;
  max-width: 700px;
  margin: 0 auto;
}

.features_grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.feature_card {
  background-color: #f9fafc;
  border-radius: var(--border-radius);
  padding: 30px;
  text-align: center;
  transition: var(--transition);
  box-shadow: var(--box-shadow);
}

.feature_card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.feature_card-icon {
  font-size: 40px;
  color: var(--primary-color);
  margin-bottom: 20px;
}

.feature_card h3 {
  font-size: 22px;
  margin-bottom: 15px;
  color: var(--dark-color);
}

.scenarios_grid {
  display: grid;
  grid-template-columns: 1fr 1fr; /* 左右各占一半 */
  gap: 40px;
  align-items: center;
}

.scenarios_grid p {
  font-size: 16px;
  line-height: 1.8;
  margin-bottom: 16px;
  color: #333;
}

.scenarios_grid video.fullscreen-video {
  width: 100%;
  border-radius: 12px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

/* CTA区域 */
.index_cta {
  padding: 100px 0;
  background: linear-gradient(
    135deg,
    var(--primary-color) 0%,
    var(--secondary-color) 100%
  );
  color: white;
  text-align: center;
}

.index_cta h2 {
  font-size: 36px;
  margin-bottom: 20px;
}

.index_cta p {
  max-width: 600px;
  margin: 0 auto 40px;
  opacity: 0.9;
}

.index_cta .btn {
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
  transform: translateY(0);
  transition: all 0.3s ease;
}

.index_cta .btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

/* 视频部分样式 */
.index_video {
  padding: 100px 0;
  background-color: white;
}

.video_container {
  max-width: 100%;
  margin: 0 auto;
}

.video_wrapper {
  position: relative;
  width: 100%;
  padding-top: 56.25%;
  /* 16:9 宽高比 */
  background: #000;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--box-shadow);
}

.video_wrapper video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

hr {
  margin: 80px auto;
  max-width: 1600px;
  opacity: 0.25;
}
/* 响应式设计补充 */
@media (max-width: 768px) {
  .features_grid {
    grid-template-columns: 1fr;
  }

  .index_cta h2 {
    font-size: 28px;
  }

  .index_cta p {
    font-size: 16px;
    padding: 0 20px;
  }
  .scenarios_grid {
    grid-template-columns: 1fr;
  }

  .scenarios_grid video.fullscreen-video {
    max-width: 100%;
    margin-top: 20px;
  }
}