/* style/index.css */
/* 页面完整样式代码 - 注意：所有选择器必须使用BEM命名规则（双下划线__连接） */

/* Root variables for colors */
:root {
  --primary-color: #26A9E0;
  --secondary-color: #FFFFFF;
  --login-color: #EA7C07;
  --text-on-dark: #ffffff;
  --text-on-light: #333333;
  --dark-bg: #000000;
  --light-bg-card: rgba(255, 255, 255, 0.1); /* Light transparent background for cards on dark body */
  --border-color: rgba(255, 255, 255, 0.2);
}

.page-index {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-on-dark); /* Default text color for dark body background */
  background-color: var(--dark-bg); /* Ensuring consistency, though body is set by shared.css */
}

/* Video Section */
.page-index__video-section {
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  padding-top: var(--header-offset, 120px); /* Fixed header offset */
  background-color: var(--dark-bg);
}

.page-index__video-container {
  position: relative;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.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(0, 0, 0, 0.4);
}

.page-index__video-wrapper {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 aspect ratio */
  height: 0;
  overflow: hidden;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.page-index__video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
  border-radius: 8px;
  object-fit: cover;
  pointer-events: none; /* Prevent video controls from blocking click event on parent link */
}

.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, 0.5);
  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: var(--text-on-dark);
  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;
}

.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: var(--primary-color);
  color: var(--text-on-dark);
  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, 0.2);
  border: none;
  cursor: pointer;
  min-width: 180px; /* Ensure button is not too small */
}

.page-index__play-now-button:hover {
  background: #1e87b7; /* Darker primary color */
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.3);
}

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

/* H1 Title + CTA Buttons Section */
.page-index__title-section {
  text-align: center;
  padding: 80px 20px;
  background-color: var(--dark-bg);
  color: var(--text-on-dark);
}

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

.page-index__main-title {
  font-size: 48px;
  margin-bottom: 20px;
  color: var(--primary-color); /* H1 can use brand color */
  font-weight: bold;
}

.page-index__title-description {
  font-size: 18px;
  margin-bottom: 40px;
  color: var(--text-on-dark);
}

.page-index__cta-buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap; /* Allow wrapping on small screens */
}

.page-index__cta-button {
  display: inline-block;
  padding: 15px 30px;
  text-decoration: none;
  border-radius: 8px;
  font-size: 18px;
  font-weight: bold;
  transition: all 0.3s ease;
  min-width: 180px; /* Ensure buttons are not too small */
  text-align: center;
  box-sizing: border-box; /* Crucial for responsiveness */
}

.page-index__cta-button--primary {
  background: var(--primary-color);
  color: var(--text-on-dark);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  border: 2px solid transparent;
}

.page-index__cta-button--primary:hover {
  background: #1e87b7;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.3);
}

.page-index__cta-button--secondary {
  background: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.page-index__cta-button--secondary:hover {
  background: var(--primary-color);
  color: var(--text-on-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

/* Brand Introduction Section */
.page-index__brand-section {
  padding: 80px 20px;
  background-color: var(--dark-bg);
  color: var(--text-on-dark);
  border-top: 1px solid var(--border-color);
}

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

.page-index__brand-title {
  font-size: 36px;
  margin-bottom: 40px;
  color: var(--primary-color);
}

.page-index__brand-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-bottom: 40px;
  text-align: left;
}

.page-index__brand-item {
  background: var(--light-bg-card);
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border-color);
}

.page-index__brand-item-title {
  font-size: 24px;
  margin-bottom: 15px;
  color: var(--primary-color);
}

.page-index__brand-item p {
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-on-dark);
}

.page-index__brand-image {
  max-width: 100%;
  height: auto;
  border-radius: 10px;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
  margin-top: 20px;
  min-width: 200px; /* Enforce minimum size */
  min-height: 200px; /* Enforce minimum size */
}

/* FAQ Section */
.page-index__faq-section {
  padding: 80px 20px;
  background-color: var(--dark-bg); /* Dark background as specified for body */
  color: var(--text-on-dark); /* Light text for dark background */
  border-top: 1px solid var(--border-color);
}

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

.page-index__faq-main-title {
  font-size: 36px;
  text-align: center;
  margin-bottom: 40px;
  color: var(--primary-color);
}

details.page-index__faq-item {
  margin-bottom: 15px;
  border-radius: 10px;
  overflow: hidden;
  background: var(--light-bg-card);
  border: 1px solid var(--border-color);
  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(--primary-color); /* FAQ question text */
  font-size: 18px;
  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, 255, 255, 0.05); /* Slightly lighter hover on dark background */
}
.page-index__faq-qtext {
  flex: 1;
  line-height: 1.5;
  text-align: left;
}
.page-index__faq-toggle {
  font-size: 24px;
  font-weight: bold;
  color: var(--text-on-dark);
  flex-shrink: 0;
  margin-left: 15px;
  width: 28px;
  text-align: center;
}
details.page-index__faq-item .page-index__faq-answer {
  padding: 0 25px 25px;
  background: rgba(255, 255, 255, 0.05); /* Slightly lighter background for answer */
  border-radius: 0 0 10px 10px;
  color: var(--text-on-dark);
}
.page-index__faq-answer p {
  margin: 0;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-on-dark);
}

/* Blog List Section */
.page-index__blog-section {
  padding: 80px 20px;
  background-color: var(--dark-bg);
  color: var(--text-on-dark);
  border-top: 1px solid var(--border-color);
}

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

.page-index__blog-title {
  font-size: 36px;
  margin-bottom: 40px;
  color: var(--primary-color);
}

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

.page-index__blog-item {
  background: var(--light-bg-card);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border-color);
  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 20px rgba(0, 0, 0, 0.3);
}

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

.page-index__blog-item-image {
  width: 100%;
  height: 250px; /* Fixed height for blog thumbnails */
  object-fit: cover;
  display: block;
  min-width: 200px; /* Enforce minimum size */
  min-height: 200px; /* Enforce minimum size */
}

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

.page-index__blog-item-title {
  font-size: 20px;
  margin-bottom: 10px;
  color: var(--primary-color);
  line-height: 1.4;
}

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

.page-index__blog-item-date {
  font-size: 14px;
  color: #aaa;
}

/* Responsive Design for Mobile (max-width: 768px) */
@media (max-width: 768px) {
  .page-index {
    font-size: 16px;
    line-height: 1.6;
  }

  /* Video Section Mobile */
  .page-index__video-section {
    padding-top: var(--header-offset, 120px) !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; /* Mobile: contain to show full video */
  }
  
  .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;
  }

  /* Title Section Mobile */
  .page-index__title-section {
    padding: 60px 15px;
  }

  .page-index__main-title {
    font-size: 32px;
    line-height: 1.3;
  }

  .page-index__title-description {
    font-size: 16px;
    margin-bottom: 30px;
  }

  .page-index__cta-buttons {
    flex-direction: column;
    gap: 15px;
    padding: 0 15px; /* Add padding to container */
  }

  .page-index__cta-button {
    max-width: 100% !important;
    width: 100% !important;
    padding: 12px 20px !important;
    font-size: 16px !important;
    white-space: normal !important;
    word-wrap: break-word !important;
  }

  /* Brand Section Mobile */
  .page-index__brand-section {
    padding: 60px 15px;
  }

  .page-index__brand-title {
    font-size: 28px;
    margin-bottom: 30px;
  }

  .page-index__brand-content {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .page-index__brand-item {
    padding: 25px;
  }

  .page-index__brand-item-title {
    font-size: 20px;
  }

  .page-index__brand-item p {
    font-size: 15px;
  }

  .page-index__brand-image {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    min-width: 200px !important; /* Enforce minimum size */
    min-height: 200px !important; /* Enforce minimum size */
    box-sizing: border-box !important;
  }

  /* FAQ Section Mobile */
  .page-index__faq-section {
    padding: 60px 15px;
  }

  .page-index__faq-main-title {
    font-size: 28px;
    margin-bottom: 30px;
  }
  details.page-index__faq-item summary.page-index__faq-question {
    padding: 15px;
  }
  .page-index__faq-qtext { font-size: 15px; }
  details.page-index__faq-item .page-index__faq-answer {
    padding: 0 15px 15px;
  }
  .page-index__faq-answer p {
    font-size: 15px;
  }

  /* Blog Section Mobile */
  .page-index__blog-section {
    padding: 60px 15px;
  }

  .page-index__blog-title {
    font-size: 28px;
    margin-bottom: 30px;
  }

  .page-index__blog-list {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .page-index__blog-item-image {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    min-width: 200px !important; /* Enforce minimum size */
    min-height: 200px !important; /* Enforce minimum size */
    box-sizing: border-box !important;
  }

  .page-index__blog-item-title {
    font-size: 18px;
  }

  .page-index__blog-item-excerpt {
    font-size: 14px;
  }
}

/* General image and container responsiveness */
.page-index img {
  max-width: 100%;
  height: auto;
  display: block;
}

.page-index video {
  max-width: 100%;
  width: 100%;
  height: auto;
  display: block;
}

/* Ensure all content containers are responsive */
.page-index__section,
.page-index__container,
.page-index__card,
.page-index__brand-content,
.page-index__blog-list {
  max-width: 100%;
  width: 100%;
  box-sizing: border-box;
  overflow: hidden; /* Prevent horizontal scroll for content */
}

/* Mobile specific overrides for images and containers */
@media (max-width: 768px) {
  .page-index img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }
  .page-index video {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }
  
  .page-index__section,
  .page-index__container,
  .page-index__card,
  .page-index__brand-content,
  .page-index__blog-list {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
    overflow: hidden !important;
  }

  .page-index__video-section,
  .page-index__title-section,
  .page-index__brand-section,
  .page-index__faq-section,
  .page-index__blog-section {
    padding-left: 0 !important; /* Sections should not have inner padding on mobile */
    padding-right: 0 !important;
  }
}