:root {
  --primary-color: #FF8C1A;
  --secondary-color: #FFA53A;
  --background-dark: #0D0E12;
  --card-background: #17191F;
  --text-main: #FFF3E6;
  --border-color: #A84F0C;
  --glow-color: #FFB04D;
  --deep-orange: #D96800;
}

/* 智能文字颜色选择器 - body背景色来自 shared.css */
.page-index {
  color: var(--text-main); /* 默认深色背景配浅色文字 */
  background-color: var(--background-dark); /* 确保背景色和文字颜色匹配 */
}

.page-index__dark-section {
  background: var(--background-dark);
  color: var(--text-main);
}

.page-index__light-section {
  background: #ffffff;
  color: #333333;
}

.page-index__card {
  background: var(--card-background);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

/* 正文内容区域 - 最高优先级 */
.page-index__content-area,
.page-index__text-block {
  color: var(--text-main);
  background: var(--background-dark);
}

.page-index p,
.page-index li {
  color: var(--text-main);
}

/* 按钮文字对比度保障 */
.page-index__cta-button,
.page-index__play-now-button {
  background: linear-gradient(180deg, var(--secondary-color) 0%, var(--deep-orange) 100%);
  color: #ffffff; /* 按钮文字始终使用白色 */
  border: none;
}

.page-index__cta-button:hover,
.page-index__play-now-button:hover {
  background: linear-gradient(180deg, var(--deep-orange) 0%, var(--secondary-color) 100%);
}

/* 🚨 桌面端视频区域样式（必须严格遵守） */
.page-index__video-section {
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  /* 🚨 页头整段高度由 shared 的 body { padding-top: var(--header-offset); } 承担；此处仅用小额顶距，禁止再写 var(--header-offset) 以免双倍空白 */
  padding-top: 10px;
  background-color: var(--background-dark);
}

.page-index__video-container {
  position: relative;
  width: 100%; /* 🚨 桌面端必须包含 width: 100% */
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

/* 🚨 视频点击链接样式（必须严格遵守） */
.page-index__video-link {
  display: block;
  text-decoration: none;
  position: relative;
  width: 100%;
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-index__video-link:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 140, 26, 0.4);
}

.page-index__video-wrapper {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 宽高比 - 🚨 PageSpeed优化：固定宽高比避免布局偏移（CLS） */
  height: 0;
  overflow: hidden;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.page-index__video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
  border-radius: 8px;
  object-fit: cover;
  pointer-events: none; /* 防止视频控件阻止点击事件 */
}

/* 🚨 视频点击提示遮罩层样式（可选，增强用户体验） */
.page-index__video-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.3);
  border-radius: 8px;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
  z-index: 1;
}

.page-index__video-link:hover .page-index__video-overlay {
  opacity: 1;
}

.page-index__video-click-hint {
  color: #ffffff;
  font-size: 18px;
  font-weight: bold;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
  padding: 10px 20px;
  background: rgba(255, 140, 26, 0.8); /* Sử dụng màu chủ đạo */
  border-radius: 5px;
  white-space: nowrap;
}

/* 🚨 Play Now按钮样式（必须严格遵守，位于视频下方中间位置） */
.page-index__video-cta {
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: 30px;
}

.page-index__play-now-button {
  display: inline-block;
  padding: 15px 40px;
  background: linear-gradient(180deg, var(--secondary-color) 0%, var(--deep-orange) 100%);
  color: #ffffff;
  text-decoration: none;
  border-radius: 8px;
  font-size: 18px;
  font-weight: bold;
  text-align: center;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(255, 140, 26, 0.3);
  border: none;
  cursor: pointer;
  text-transform: uppercase;
}

.page-index__play-now-button:hover {
  background: linear-gradient(180deg, var(--deep-orange) 0%, var(--secondary-color) 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(255, 140, 26, 0.4);
}

.page-index__play-now-button:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.page-index__title-section {
  background-color: var(--background-dark);
  padding: 80px 20px;
  text-align: center;
  display: flex;
  justify-content: center;
  align-items: center;
}

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

.page-index__main-title {
  color: var(--text-main);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  /* H1 font size constraint: use clamp for controlled responsiveness */
  font-size: clamp(2.2rem, 4vw, 3.5rem);
}

.page-index__title-description {
  color: #cccccc;
  font-size: 1.1rem;
  line-height: 1.6;
  margin-bottom: 40px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.page-index__cta-buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.page-index__cta-button {
  display: inline-block;
  padding: 15px 35px;
  background: linear-gradient(180deg, var(--secondary-color) 0%, var(--deep-orange) 100%);
  color: #ffffff;
  text-decoration: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: bold;
  text-align: center;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(255, 140, 26, 0.3);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border: none;
  cursor: pointer;
}

.page-index__cta-button:hover {
  background: linear-gradient(180deg, var(--deep-orange) 0%, var(--secondary-color) 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(255, 140, 26, 0.4);
}

.page-index__features-section {
  padding: 80px 20px;
  background-color: var(--background-dark);
  color: var(--text-main);
  text-align: center;
}

.page-index__features-container {
  max-width: 1200px;
  margin: 0 auto;
}

.page-index__features-title {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  color: var(--primary-color);
  margin-bottom: 20px;
  font-weight: 700;
}

.page-index__features-description {
  font-size: 1.1rem;
  line-height: 1.6;
  color: #cccccc;
  max-width: 800px;
  margin: 0 auto 60px auto;
}

.page-index__features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.page-index__feature-item {
  padding: 30px;
  border-radius: 10px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  text-align: left;
}

.page-index__feature-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(255, 140, 26, 0.3);
}

.page-index__feature-item img {
  width: 100%;
  height: 200px; /* Fixed height for consistency */
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 20px;
}

.page-index__feature-heading {
  font-size: 1.5rem;
  color: var(--primary-color);
  margin-bottom: 15px;
  font-weight: 600;
}

.page-index__feature-text {
  font-size: 0.95rem;
  line-height: 1.6;
  color: #b0b0b0;
}

/* FAQ Section Styles */
.page-index__faq-section {
  padding: 80px 20px;
  background-color: var(--background-dark);
  color: var(--text-main);
}

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

.page-index__faq-main-title {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  color: var(--primary-color);
  text-align: center;
  margin-bottom: 20px;
  font-weight: 700;
}

.page-index__faq-description {
  font-size: 1.1rem;
  line-height: 1.6;
  color: #cccccc;
  text-align: center;
  margin-bottom: 50px;
}

.page-index__faq-list {
  margin-top: 30px;
}

/* details 作为 FAQ 卡片 */
details.page-index__faq-item {
  margin-bottom: 15px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  overflow: hidden;
  background: var(--card-background);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}
details.page-index__faq-item summary.page-index__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 25px;
  cursor: pointer;
  user-select: none;
  list-style: none;
  transition: background-color 0.3s ease;
  color: var(--text-main);
  font-weight: 600;
}
details.page-index__faq-item summary.page-index__faq-question::-webkit-details-marker {
  display: none;
}
details.page-index__faq-item summary.page-index__faq-question:hover {
  background: rgba(255, 140, 26, 0.1);
}
.page-index__faq-qtext {
  flex: 1;
  font-size: 1.1rem;
  font-weight: 600;
  line-height: 1.5;
  text-align: left;
  color: var(--text-main);
}
.page-index__faq-toggle {
  font-size: 24px;
  font-weight: bold;
  color: var(--primary-color);
  flex-shrink: 0;
  margin-left: 15px;
  width: 28px;
  text-align: center;
}
details.page-index__faq-item .page-index__faq-answer {
  padding: 0 25px 20px;
  background: rgba(255, 140, 26, 0.05);
  border-radius: 0 0 8px 8px;
  color: #cccccc;
  font-size: 1rem;
  line-height: 1.6;
}

.page-index__brand-section {
  padding: 80px 20px;
  background-color: var(--background-dark);
  color: var(--text-main);
  text-align: center;
}

.page-index__brand-container {
  max-width: 1200px;
  margin: 0 auto;
}

.page-index__brand-title {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  color: var(--primary-color);
  margin-bottom: 20px;
  font-weight: 700;
}

.page-index__brand-intro-text {
  font-size: 1.1rem;
  line-height: 1.6;
  color: #cccccc;
  max-width: 800px;
  margin: 0 auto 60px auto;
}

.page-index__brand-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 30px;
}

.page-index__brand-item {
  padding: 30px;
  border-radius: 10px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  text-align: left;
}

.page-index__brand-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(255, 140, 26, 0.3);
}

.page-index__brand-item img {
  width: 100%;
  height: 250px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 20px;
}

.page-index__brand-item-title {
  font-size: 1.5rem;
  color: var(--primary-color);
  margin-bottom: 15px;
  font-weight: 600;
}

.page-index__brand-item-text {
  font-size: 0.95rem;
  line-height: 1.6;
  color: #b0b0b0;
}

.page-index__blog-section {
  padding: 80px 20px;
  background-color: var(--background-dark);
  color: var(--text-main);
  text-align: center;
}

.page-index__blog-container {
  max-width: 1200px;
  margin: 0 auto;
}

.page-index__blog-title {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  color: var(--primary-color);
  margin-bottom: 20px;
  font-weight: 700;
}

.page-index__blog-description {
  font-size: 1.1rem;
  line-height: 1.6;
  color: #cccccc;
  max-width: 800px;
  margin: 0 auto 60px auto;
}

.page-index__blog-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.page-index__blog-item {
  border-radius: 10px;
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  text-align: left;
}

.page-index__blog-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(255, 140, 26, 0.3);
}

.page-index__blog-item img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: 8px 8px 0 0;
}

.page-index__blog-content {
  padding: 20px;
}

.page-index__blog-link {
  text-decoration: none;
  color: inherit;
}

.page-index__blog-item-title {
  font-size: 1.3rem;
  color: var(--text-main);
  margin-bottom: 10px;
  line-height: 1.4;
  font-weight: 600;
  transition: color 0.3s ease;
}

.page-index__blog-link:hover .page-index__blog-item-title {
  color: var(--primary-color);
}

.page-index__blog-item-excerpt {
  font-size: 0.9rem;
  color: #b0b0b0;
  line-height: 1.5;
  margin-bottom: 15px;
}

.page-index__blog-item-date {
  font-size: 0.85rem;
  color: #888888;
}

.page-index__blog-view-all {
  margin-top: 50px;
  text-align: center;
}

/* 🚨 移动端响应式设计（必须严格遵守） */
@media (max-width: 768px) {
  .page-index__video-section {
    padding-top: 10px !important;
    padding-bottom: 40px;
    padding-left: 15px;
    padding-right: 15px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    overflow: hidden !important;
  }
  
  .page-index__video-container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 0;
    padding-right: 0;
    overflow: hidden !important;
  }
  
  .page-index__video-link {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }
  
  .page-index__video-wrapper {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    border-radius: 4px;
    overflow: hidden !important;
  }
  
  .page-index__video {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    border-radius: 4px;
    object-fit: contain; /* 移动端使用contain确保视频完整显示且不超出 */
  }
  
  .page-index__video-cta {
    margin-top: 20px;
    padding-left: 15px;
    padding-right: 15px;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
  }
  
  .page-index__play-now-button {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding: 12px 30px !important;
    font-size: 16px !important;
    white-space: normal !important;
    word-wrap: break-word !important;
  }
  
  .page-index__video-click-hint {
    font-size: 14px !important;
    padding: 8px 16px !important;
  }

  .page-index__title-section {
    padding: 60px 15px;
  }

  .page-index__main-title {
    font-size: 2rem;
    margin-bottom: 15px;
  }

  .page-index__title-description {
    font-size: 1rem;
    margin-bottom: 30px;
  }

  .page-index__cta-buttons {
    flex-direction: column;
    gap: 15px;
  }

  .page-index__cta-button {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding: 12px 25px !important;
    font-size: 0.9rem !important;
    white-space: normal !important;
    word-wrap: break-word !important;
  }

  .page-index__features-section,
  .page-index__faq-section,
  .page-index__brand-section,
  .page-index__blog-section {
    padding: 60px 15px;
  }

  .page-index__features-title,
  .page-index__faq-main-title,
  .page-index__brand-title,
  .page-index__blog-title {
    font-size: 2rem;
    margin-bottom: 15px;
  }

  .page-index__features-description,
  .page-index__faq-description,
  .page-index__brand-intro-text,
  .page-index__blog-description {
    font-size: 1rem;
    margin-bottom: 40px;
  }

  .page-index__features-grid,
  .page-index__brand-content,
  .page-index__blog-list {
    grid-template-columns: 1fr;
    gap: 25px;
  }

  .page-index__feature-item,
  .page-index__brand-item,
  .page-index__blog-item {
    padding: 20px;
  }

  .page-index__feature-item img,
  .page-index__brand-item img,
  .page-index__blog-item img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }

  .page-index__feature-heading,
  .page-index__brand-item-title {
    font-size: 1.3rem;
  }

  .page-index__feature-text,
  .page-index__brand-item-text,
  .page-index__blog-item-excerpt {
    font-size: 0.9rem;
  }

  details.page-index__faq-item summary.page-index__faq-question {
    padding: 15px;
  }
  .page-index__faq-qtext {
    font-size: 1rem;
  }
  details.page-index__faq-item .page-index__faq-answer {
    padding: 0 15px 15px;
  }
}