/* 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） */

/* General Styles for page-index */
.page-index {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  /* Body background is dark #0a0a0a, so text should be light */
  color: #ffffff; /* Default text color for dark background */
  background-color: #0a0a0a; /* Ensure consistency with body background */
}

/* Global container for content sections */
.page-index__video-section,
.page-index__title-section,
.page-index__faq-section,
.page-index__brand-section,
.page-index__blog-section {
  padding: 80px 20px;
}

/* Sections with specific background colors */
.page-index__video-section,
.page-index__title-section,
.page-index__brand-section {
  background: #0a0a0a; /* Dark background */
  color: #ffffff; /* Light text */
}

.page-index__faq-section,
.page-index__blog-section {
  background: #f8f8f8; /* Light background */
  color: #333333; /* Dark text */
}

/* Adjust padding-top for the first section to account for fixed header */
.page-index__video-section {
  padding-top: var(--header-offset, 120px);
}

/* --- Video Section --- */
.page-index__video-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.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, 0.2);
}

.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, 0.15);
}

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

.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); /* Darker overlay for better contrast */
  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(38, 169, 224, 0.8); /* Using 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, #26A9E0); /* Use primary color */
  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(0, 0, 0, 0.15);
  border: none;
  cursor: pointer;
}

.page-index__play-now-button:hover {
  background: #1e87b7; /* Slightly darker primary color */
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

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

/* --- H1 Title Section --- */
.page-index__title-container {
  max-width: 900px;
  margin: 0 auto;
}

.page-index__main-title {
  font-size: 48px;
  font-weight: bold;
  margin-bottom: 20px;
  color: #ffffff; /* Ensure white text */
  line-height: 1.2;
}

.page-index__title-description {
  font-size: 18px;
  margin-bottom: 40px;
  color: #f0f0f0; /* Slightly off-white for description */
  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 */
}

.page-index__cta-button {
  display: inline-block;
  padding: 15px 30px;
  border-radius: 8px;
  font-size: 18px;
  font-weight: bold;
  text-decoration: none;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  border: none;
  cursor: pointer;
}

.page-index__btn-primary {
  background: #26A9E0; /* Primary brand color */
  color: #ffffff;
}

.page-index__btn-primary:hover {
  background: #1e87b7;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.page-index__btn-secondary {
  background: transparent;
  color: #26A9E0; /* Primary brand color for text */
  border: 2px solid #26A9E0;
}

.page-index__btn-secondary:hover {
  background: rgba(38, 169, 224, 0.1); /* Light background on hover */
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

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

.page-index__faq-main-title {
  font-size: 36px;
  font-weight: bold;
  text-align: center;
  margin-bottom: 40px;
  color: #333333;
}

details.page-index__faq-item {
  margin-bottom: 15px;
  border-radius: 8px; /* Slightly larger border-radius */
  border: 1px solid #e0e0e0;
  overflow: hidden;
  background: #fff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05); /* Subtle shadow */
}

details.page-index__faq-item summary.page-index__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 25px; /* Increased padding */
  cursor: pointer;
  user-select: none;
  list-style: none;
  transition: background-color 0.3s ease;
  color: #333333; /* Ensure dark text on light background */
}

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: #f5f5f5;
}

.page-index__faq-qtext {
  flex: 1;
  font-size: 17px; /* Slightly larger font size */
  font-weight: 600;
  line-height: 1.5;
  text-align: left;
}

.page-index__faq-toggle {
  font-size: 24px;
  font-weight: bold;
  color: #26A9E0; /* Use primary color for toggle */
  flex-shrink: 0;
  margin-left: 15px;
  width: 28px;
  text-align: center;
}

details.page-index__faq-item .page-index__faq-answer {
  padding: 0 25px 20px; /* Increased padding */
  background: #f9f9f9;
  border-radius: 0 0 8px 8px;
  color: #555555; /* Slightly lighter dark text for answer */
}

.page-index__faq-answer p {
  margin-bottom: 0;
}

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

.page-index__brand-title {
  font-size: 36px;
  font-weight: bold;
  margin-bottom: 40px;
  color: #ffffff;
}

.page-index__brand-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  text-align: left;
}

.page-index__brand-item {
  background: rgba(255, 255, 255, 0.08); /* Semi-transparent white background */
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.page-index__brand-item-image {
  width: 100%;
  height: 200px; /* Fixed height for consistency */
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 20px;
  filter: brightness(0.9); /* Slightly dim image for dark background, no color change */
}

.page-index__brand-item h3 {
  font-size: 24px;
  font-weight: bold;
  margin-top: 0;
  margin-bottom: 15px;
  color: #26A9E0; /* Primary color for sub-titles */
}

.page-index__brand-item p {
  font-size: 16px;
  color: #f0f0f0;
}

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

.page-index__blog-title {
  font-size: 36px;
  font-weight: bold;
  margin-bottom: 40px;
  color: #333333;
}

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

.page-index__blog-item {
  background: #ffffff;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
  text-align: left;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-index__blog-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

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

.page-index__blog-item-image {
  width: 100%;
  height: 220px; /* Fixed height for blog images */
  object-fit: cover;
  display: block;
}

.page-index__blog-item-title {
  font-size: 20px;
  font-weight: bold;
  margin: 20px 20px 10px;
  color: #333333;
}

.page-index__blog-item-excerpt {
  font-size: 15px;
  color: #666666;
  margin: 0 20px 15px;
  line-height: 1.5;
}

.page-index__blog-item-date {
  font-size: 13px;
  color: #999999;
  margin: 0 20px 20px;
  display: block;
}

.page-index__view-all-button {
  margin-top: 50px;
}

/* All images base responsive style */
.page-index img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* All buttons base responsive style */
.page-index__cta-button,
.page-index__btn-primary,
.page-index__btn-secondary,
.page-index a[class*="button"],
.page-index a[class*="btn"] {
  max-width: 100%;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

/* Button containers base responsive style */
.page-index__cta-buttons,
.page-index__button-group,
.page-index__btn-container {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  overflow: hidden;
}

/* Video containers base responsive style */
.page-index video,
.page-index__video {
  max-width: 100%;
  width: 100%;
  height: auto;
  display: block;
}

.page-index__video-section,
.page-index__video-container,
.page-index__video-wrapper {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  overflow: hidden;
}

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

  /* Ensure content area doesn't cause horizontal scroll */
  .page-index__video-section,
  .page-index__title-section,
  .page-index__faq-section,
  .page-index__brand-section,
  .page-index__blog-section {
    padding-left: 15px;
    padding-right: 15px;
    /* Mobile specific padding-top for header offset */
    padding-top: var(--header-offset, 120px) !important; /* Ensure header offset is applied */
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    overflow: hidden !important;
  }
  
  /* Reset padding-top for other sections if video-section already handles global offset */
  .page-index__title-section,
  .page-index__faq-section,
  .page-index__brand-section,
  .page-index__blog-section {
      padding-top: 40px !important; /* Adjust as needed for smaller top padding below video/hero */
  }


  /* Video Section Mobile */
  .page-index__video-container,
  .page-index__video-wrapper {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 0;
    padding-right: 0;
    overflow: hidden !important;
  }

  .page-index__video {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    object-fit: contain;
  }

  .page-index__video-click-hint {
    font-size: 14px !important;
    padding: 8px 16px !important;
  }

  .page-index__video-cta {
    margin-top: 20px;
    padding-left: 0;
    padding-right: 0;
    max-width: 100%;
    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;
  }

  /* Title Section Mobile */
  .page-index__main-title {
    font-size: 32px;
  }

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

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

  .page-index__cta-button {
    width: 100% !important;
    max-width: 100% !important;
    padding: 12px 20px !important;
    font-size: 16px !important;
  }

  /* FAQ Section Mobile */
  .page-index__faq-main-title {
    font-size: 28px;
  }

  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;
    width: 24px;
    height: 24px;
  }

  details.page-index__faq-item .page-index__faq-answer {
    padding: 0 15px 15px;
  }

  /* Brand Section Mobile */
  .page-index__brand-title {
    font-size: 28px;
  }

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

  .page-index__brand-item-image {
    height: 150px;
  }

  .page-index__brand-item h3 {
    font-size: 20px;
  }

  .page-index__brand-item p {
    font-size: 14px;
  }

  /* Blog Section Mobile */
  .page-index__blog-title {
    font-size: 28px;
  }

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

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

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

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

  .page-index__view-all-button {
    margin-top: 30px;
  }

  .page-index__view-all-button .page-index__cta-button {
    width: 100% !important;
    max-width: 100% !important;
    padding: 12px 20px !important;
    font-size: 16px !important;
  }
}

/* Ensure all images and video elements are responsive and do not overflow */
@media (max-width: 768px) {
  .page-index img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }
  
  .page-index__section,
  .page-index__card,
  .page-index__container,
  .page-index__video-section,
  .page-index__video-container,
  .page-index__video-wrapper,
  .page-index__title-container,
  .page-index__faq-container,
  .page-index__brand-container,
  .page-index__blog-container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 0px; /* Handled by section padding */
    padding-right: 0px; /* Handled by section padding */
    overflow: hidden !important;
  }
  
  .page-index video,
  .page-index__video {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }
  
  /* Buttons */
  .page-index__cta-button,
  .page-index__btn-primary,
  .page-index__btn-secondary,
  .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;
  }
  
  .page-index__cta-buttons,
  .page-index__button-group,
  .page-index__btn-container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
    flex-wrap: wrap !important;
    gap: 10px;
  }
  
  .page-index__cta-buttons {
    flex-direction: column !important; /* Ensure vertical stacking for multiple buttons */
  }
}