/* 东方慧通官网 移动端优化覆盖样式 */

/* 导航在移动端的可点击面积与层级 */
.navbar { 
  z-index: 1000; 
  padding: 0.5rem 1rem;
}
.navbar .navbar-toggler { 
  padding: 0.5rem 0.75rem; 
  border: 1px solid rgba(100, 255, 218, 0.3);
}
.navbar-brand img {
  max-height: 35px;
}

/* Hero区域首屏可视与排版优化 */
.hero {
  min-height: 85vh;
  display: flex;
  align-items: center;
  padding: 2rem 0;
}
.hero .display-4 { 
  font-size: clamp(1.6rem, 3.5vw, 2.75rem); 
  line-height: 1.2;
  margin-bottom: 1rem;
}
.hero .lead { 
  font-size: clamp(1rem, 2.8vw, 1.3rem); 
  line-height: 1.4;
  margin-bottom: 1.5rem;
}
.hero .btn { 
  padding: 0.6rem 1rem; 
  font-size: clamp(0.9rem, 2.2vw, 1.1rem);
  margin: 0.3rem;
}

/* 手机端section间距优化 */
@media (max-width: 768px) {
  .section {
    padding: 3rem 0 2rem;
  }
  
  .container {
    padding-left: 1rem;
    padding-right: 1rem;
  }
  
  /* 标题优化 */
  .section-title {
    font-size: clamp(1.5rem, 4vw, 2rem);
    margin-bottom: 1.5rem;
  }
  
  .section-subtitle {
    font-size: clamp(0.9rem, 2.5vw, 1.1rem);
    margin-bottom: 2rem;
  }
  
  /* 卡片布局优化 */
  .about-card, .company-overview-card {
    margin-bottom: 1.5rem;
    padding: 1.5rem;
  }
  
  /* 业务卡片网格 */
  .business-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  /* 服务网格 */
  .services-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
}

/* 资质与合作伙伴图标尺寸与间距（恢复原始样式，移除强制缩小） */

/* 电子书模态弹窗响应式优化 */
@media (max-width: 768px) {
  .ebook-modal-content { 
    width: 98%; 
    max-height: 98vh; 
    margin: 1vh auto;
  }
  .ebook-modal-header { 
    padding: 0.8rem 1rem; 
    flex-wrap: nowrap;
  }
  .ebook-modal-header h3 { 
    font-size: 1.1rem; 
    white-space: nowrap;
  }
  .ebook-modal-body { 
    padding: 0.8rem; 
  }
  .ebook-controls { 
    gap: 0.8rem; 
    padding: 0.8rem;
    flex-wrap: nowrap;
  }
  .ebook-btn { 
    padding: 0.5rem 0.8rem; 
    font-size: 0.85rem;
    white-space: nowrap;
  }
  .ebook-content { 
    padding: 0.5rem; 
    max-height: 65vh;
  }
  #ebookImage { 
    max-height: 60vh; 
    width: auto;
  }
  #ebookPageIndicator {
    font-size: 0.9rem;
    min-width: 70px;
  }
}

/* 小屏手机端进一步优化 */
@media (max-width: 576px) {
  /* 减少动画抖动与阴影在低端设备的开销 */
  .animated-title span, .hero-title span { animation-duration: 1.2s; }
  .about-card, .company-overview-card { box-shadow: none; }
  
  /* 更紧凑的布局 */
  .section {
    padding: 2rem 0 1.5rem;
  }
  
  .hero {
    min-height: 80vh;
    padding: 1.5rem 0;
  }
  
  .hero .display-4 {
    font-size: clamp(1.4rem, 5vw, 1.8rem);
    margin-bottom: 0.8rem;
  }
  
  .hero .lead {
    font-size: clamp(0.9rem, 3.5vw, 1.1rem);
    margin-bottom: 1.2rem;
  }
  
  .hero .btn {
    padding: 0.5rem 0.8rem;
    font-size: 0.9rem;
    display: block;
    width: 100%;
    max-width: 200px;
    margin: 0.5rem auto;
  }
  
  /* 导航优化 */
  .navbar {
    padding: 0.3rem 0.8rem;
  }
  
  .navbar-brand img {
    max-height: 30px;
  }
  
  /* 容器内边距 */
  .container {
    padding-left: 0.8rem;
    padding-right: 0.8rem;
  }
  
  /* 标题字体 */
  .section-title {
    font-size: clamp(1.3rem, 5vw, 1.7rem);
    margin-bottom: 1rem;
  }
  
  .section-subtitle {
    font-size: clamp(0.85rem, 3vw, 1rem);
    margin-bottom: 1.5rem;
  }
  
  /* 卡片内边距 */
  .about-card, .company-overview-card {
    padding: 1.2rem;
    margin-bottom: 1rem;
  }
  
  /* 资质和合作伙伴容器 */
  .qualification-marquee-container, .partners-marquee-container {
    padding: 20px 10px;
    margin: 15px 0;
  }
}

/* 滚动容器开启硬件加速，提升流畅度 */
.qualification-marquee-container, .partners-marquee-container {
  will-change: transform;
  transform: translateZ(0);
}