:root {
  --primary-color: #11A84E; /* 主色调 */
  --secondary-color: #22C768; /* 辅助色 */
  --button-gradient-start: #2AD16F; /* 按钮渐变开始 */
  --button-gradient-end: #13994A; /* 按钮渐变结束 */
  --card-bg: #11271B; /* 卡片背景 */
  --page-bg: #08160F; /* 页面背景 */\  /* Body背景色值：#08160F，为深色 */
  --text-main: #F2FFF6; /* 主要文字颜色 - 浅色 */
  --text-secondary: #A7D9B8; /* 次要文字颜色 - 浅色 */
  --border-color: #2E7A4E; /* 边框颜色 */
  --glow-color: #57E38D; /* 光晕颜色 */
  --gold-color: #F2C14E; /* 金色 */
  --divider-color: #1E3A2A; /* 分隔线颜色 */
  --deep-green-color: #0A4B2C; /* 深绿色 */
}

/* 全局内容区文字颜色基于body背景色（--page-bg是深色） */
.page-index {
  color: var(--text-main); /* 必须使用浅色文字 */
  background-color: var(--page-bg); /* 深色背景，来自shared.css body */
  line-height: 1.6;
  font-family: 'Arial', sans-serif;
}

/* 🚨 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;
  padding-top: 10px; /* 🚨 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 */
  background-color: var(--page-bg);
}

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

/* 🚨 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;
  border-radius: 8px;
  overflow: hidden;
}

.page-index__video-link:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

.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 */
  filter: none; /* 🚨 禁止使用CSS filter改变图片颜色 */
}

/* 🚨 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: var(--primary-color);
  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(--button-gradient-start) 0%, var(--button-gradient-end) 100%); /* Custom button gradient */
  color: var(--text-main); /* White text for contrast */
  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(0, 0, 0, 0.3);
  border: none;
  cursor: pointer;
  max-width: 100%; /* For responsive */
  box-sizing: border-box; /* For responsive */
  white-space: normal; /* For responsive */
  word-wrap: break-word; /* For responsive */
}

.page-index__play-now-button:hover {
  background: linear-gradient(180deg, var(--button-gradient-end) 0%, var(--button-gradient-start) 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.4);
}

.page-index__play-now-button:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

/* Module 1: H1 Title + Activity Promotion Button */
.page-index__title-section {
  padding: 60px 20px;
  text-align: center;
  background-color: var(--page-bg);
  color: var(--text-main);
}

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

.page-index__main-title {
  font-size: clamp(2.5rem, 5vw, 3.5rem); /* Using clamp for H1 font size */
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 20px;
  color: var(--gold-color); /* Using gold for H1 for emphasis */
}

.page-index__title-description {
  font-size: 1.1rem;
  margin-bottom: 40px;
  color: var(--text-secondary);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.page-index__cta-buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap; /* Allow buttons to wrap on smaller screens */
  width: 100%; /* For responsive */
  max-width: 100%; /* For responsive */
  box-sizing: border-box; /* For responsive */
  padding: 0 15px; /* For responsive */
  overflow: hidden; /* For responsive */
}

.page-index__cta-button {
  display: inline-block;
  padding: 15px 30px;
  background: linear-gradient(180deg, var(--button-gradient-start) 0%, var(--button-gradient-end) 100%);
  color: var(--text-main);
  text-decoration: none;
  border-radius: 8px;
  font-size: 1.1rem;
  font-weight: bold;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  border: none;
  cursor: pointer;
  max-width: 100%; /* For responsive */
  box-sizing: border-box; /* For responsive */
  white-space: normal; /* For responsive */
  word-wrap: break-word; /* For responsive */
}

.page-index__cta-button:hover {
  background: linear-gradient(180deg, var(--button-gradient-end) 0%, var(--button-gradient-start) 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.4);
}

/* Module 2: FAQ */
.page-index__faq-section {
  padding: 60px 20px;
  background-color: var(--page-bg);
  color: var(--text-main);
}

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

.page-index__faq-title {
  text-align: center;
  font-size: clamp(2rem, 4vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 40px;
  color: var(--gold-color);
}

/* 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-bg); /* Dark card background */
  color: var(--text-main); /* Light text for dark card */
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}
details.page-index__faq-item summary.page-index__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 20px;
  cursor: pointer;
  user-select: none;
  list-style: none;
  transition: background-color 0.3s ease;
}
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(var(--primary-color), 0.1); /* Lighter hover for dark background */
}
.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(--gold-color); /* Gold color for toggle icon */
  flex-shrink: 0;
  margin-left: 15px;
  width: 28px;
  text-align: center;
}
details.page-index__faq-item .page-index__faq-answer {
  padding: 0 20px 20px;
  background: var(--deep-green-color); /* Slightly different dark background for answer */
  border-radius: 0 0 8px 8px;
  color: var(--text-secondary); /* Secondary text for answers */
}
details.page-index__faq-item .page-index__faq-answer p {
  margin: 0;
  color: var(--text-secondary);
}


/* Module 3: Brand Introduction */
.page-index__brand-section {
  padding: 60px 20px;
  background-color: var(--deep-green-color); /* Different dark background */
  color: var(--text-main);
}

.page-index__brand-container {
  max-width: 1000px;
  margin: 0 auto;
}

.page-index__brand-title {
  text-align: center;
  font-size: clamp(2rem, 4vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 40px;
  color: var(--gold-color);
}

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

.page-index__brand-item {
  background: var(--card-bg);
  padding: 30px;
  border-radius: 8px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border-color);
}

.page-index__brand-item h3 {
  font-size: 1.5rem;
  margin-top: 0;
  margin-bottom: 15px;
  color: var(--primary-color);
}

.page-index__brand-item p {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* Module 4: Blog List */
.page-index__blog-section {
  padding: 60px 20px;
  background-color: var(--page-bg);
  color: var(--text-main);
}

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

.page-index__blog-title {
  text-align: center;
  font-size: clamp(2rem, 4vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 40px;
  color: var(--gold-color);
}

.page-index__blog-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-bottom: 40px;
}

.page-index__blog-item {
  background: var(--card-bg);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border-color);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-index__blog-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
}

.page-index__blog-link {
  display: block;
  text-decoration: none;
  color: inherit;
  filter: none; /* 🚨 禁止使用CSS filter改变图片颜色 */
}

.page-index__blog-item-image {
  width: 100%;
  height: 200px; /* Fixed height for consistency */
  object-fit: cover;
  display: block;
  filter: none; /* 🚨 禁止使用CSS filter改变图片颜色 */
}

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

.page-index__blog-item-title {
  font-size: 1.3rem;
  font-weight: 600;
  margin-top: 0;
  margin-bottom: 10px;
  color: var(--primary-color); /* Primary color for titles */
  line-height: 1.4;
}

.page-index__blog-item-excerpt {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 15px;
  line-height: 1.6;
}

.page-index__blog-item-date {
  font-size: 0.85rem;
  color: var(--text-secondary);
  opacity: 0.7;
}

.page-index__view-all-button-wrapper {
  text-align: center;
  margin-top: 20px;
}

.page-index__view-all-button {
  display: inline-block;
  padding: 12px 25px;
  background: linear-gradient(180deg, var(--button-gradient-start) 0%, var(--button-gradient-end) 100%);
  color: var(--text-main);
  text-decoration: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: bold;
  transition: all 0.3s ease;
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.2);
  border: none;
  cursor: pointer;
  max-width: 100%; /* For responsive */
  box-sizing: border-box; /* For responsive */
  white-space: normal; /* For responsive */
  word-wrap: break-word; /* For responsive */
}

.page-index__view-all-button:hover {
  background: linear-gradient(180deg, var(--button-gradient-end) 0%, var(--button-gradient-start) 100%);
  transform: translateY(-2px);
  box-shadow: 0 5px 12px rgba(0, 0, 0, 0.3);
}

/* 🚨 移动端响应式设计（必须严格遵守） */
@media (max-width: 768px) {
  .page-index {
    font-size: 16px;
    line-height: 1.6;
  }

  /* 通用内容区padding */
  .page-index__video-section,
  .page-index__title-section,
  .page-index__faq-section,
  .page-index__brand-section,
  .page-index__blog-section {
    padding: 30px 15px !important; /* Smaller padding on mobile */
  }

  /* 🚨 视频区移动端顶距与桌面一致：小额即可，禁止 var(--header-offset) */
  .page-index__video-section {
    padding-top: 10px !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 */
  }

  /* 🚨 Play Now按钮移动端响应式适配（必须严格遵守） */
  .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__main-title {
    font-size: 2rem;
  }

  .page-index__title-description {
    font-size: 1rem;
  }

  .page-index__cta-buttons {
    flex-direction: column; /* Stack buttons vertically on mobile */
    gap: 15px;
  }

  .page-index__cta-button {
    max-width: 100% !important;
    width: 100% !important;
    padding: 12px 20px !important;
    font-size: 1rem !important;
  }

  .page-index__faq-title,
  .page-index__brand-title,
  .page-index__blog-title {
    font-size: 1.8rem;
    margin-bottom: 30px;
  }
  
  details.page-index__faq-item summary.page-index__faq-question {
    padding: 15px;
  }
  .page-index__faq-qtext { font-size: 15px; }
  .page-index__faq-toggle { font-size: 20px; }
  details.page-index__faq-item .page-index__faq-answer {
    padding: 0 15px 15px;
  }

  .page-index__brand-content {
    grid-template-columns: 1fr; /* Single column for brand items */
  }

  .page-index__blog-list {
    grid-template-columns: 1fr; /* Single column for blog posts */
  }

  .page-index__blog-item-image {
    height: 180px;
  }

  .page-index__blog-item-title {
    font-size: 1.1rem;
  }

  .page-index__blog-item-excerpt {
    font-size: 0.9rem;
  }

  .page-index__view-all-button {
    padding: 10px 20px !important;
    font-size: 0.9rem !important;
  }
  
  /* 🚨 移动端图片适配强制要求 */
  .page-index img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
    filter: none !important; /* 🚨 禁止使用CSS filter改变图片颜色 */
  }
  
  .page-index__section,
  .page-index__card,
  .page-index__container,
  .page-index__blog-item,
  .page-index__brand-item {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
    overflow: hidden !important; /* Ensure no overflow for containers */
  }

  /* Additional mobile specific overrides for buttons to ensure no overflow */
  .page-index a[class*="button"],
  .page-index a[class*="btn"] {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
    padding-left: 15px;
    padding-right: 15px; /* Add padding to text within buttons */
  }
}