/* style/index.css */
/* 🚨 Body padding-top handled by shared.css: body { padding-top: var(--header-offset); } */
/* 🚨 Page CSS must NOT re-apply var(--header-offset) to prevent double spacing. */
/* 🚨 All text colors should contrast with var(--bg-color) from shared.css. Assuming light background, using dark text. */

:root {
  --primary-color: #26A9E0; /* 淡蓝色 */
  --secondary-color: #FFFFFF; /* 白色 */
  --accent-color: #EA7C07; /* 登录按钮色 */
  --text-color-dark: #333333;
  --text-color-light: #ffffff;
  --border-color: #e0e0e0;
  --bg-light-gray: #f9f9f9;
}

/* Base styles for the page content */
.page-index {
  font-family: 'Arial', sans-serif;
  color: var(--text-color-dark); /* Default text color for light background body */
  line-height: 1.6;
}

.page-index__section {
  padding: 60px 20px;
  max-width: 1200px;
  margin: 0 auto;
  box-sizing: border-box;
}

.page-index__container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 15px;
  box-sizing: border-box;
}

.page-index h1,
.page-index h2,
.page-index h3 {
  color: var(--text-color-dark);
  margin-bottom: 20px;
  line-height: 1.3;
}

.page-index h1 {
  font-size: clamp(2.2rem, 4vw, 2.8rem); /* 🚨 H1 Font Size: Using clamp for responsive sizing */
  font-weight: 700;
  text-align: center;
  color: var(--primary-color);
}

.page-index h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 600;
  text-align: center;
  margin-bottom: 30px;
}

.page-index h3 {
  font-size: clamp(1.4rem, 2.5vw, 1.8rem);
  font-weight: 600;
}

.page-index p {
  margin-bottom: 15px;
}

.page-index__cta-button {
  display: inline-block;
  padding: 15px 30px;
  background: var(--primary-color);
  color: var(--text-color-light);
  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;
  white-space: nowrap; /* Prevent text wrapping for desktop */
}

.page-index__cta-button:hover {
  background: #208cb3; /* Manually darkened */
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

/* -------------------------------------- */
/* 🚨 Video Area Styles (page-index__video-section) */
/* -------------------------------------- */
.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; /* 🚨 Correct small top padding */
}

.page-index__video-container {
  position: relative;
  width: 100%; /* 🚨 MUST be 100% on desktop to prevent shrinking */
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
}

/* 🚨 Video click link styles (page-index__video-link) */
.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 - 🚨 PageSpeed optimization: fixed aspect ratio to avoid 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; /* Prevents video controls from blocking click event on parent <a> */
}

/* 🚨 Video click hint overlay (optional, enhances UX) */
.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: var(--text-color-light);
  font-size: 18px;
  font-weight: bold;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
  padding: 10px 20px;
  background: rgba(0, 123, 255, 0.8); /* Using a blue, but could be primary-color */
  border-radius: 5px;
  white-space: nowrap;
}

/* 🚨 Play Now button styles (page-index__play-now-button) */
.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(--accent-color); /* Using the 'Login' color as CTA */
  color: var(--text-color-light);
  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: #c76706; /* Manually darkened */
  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 Styles (page-index__title-section) */
/* -------------------------------------- */
.page-index__title-section {
  padding: 40px 20px;
  text-align: center;
  background: var(--bg-light-gray);
}

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

.page-index__main-title {
  margin-bottom: 20px;
  color: var(--primary-color);
}

.page-index__title-description {
  font-size: 18px;
  margin-bottom: 30px;
  color: var(--text-color-dark);
}

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

/* -------------------------------------- */
/* Brand Introduction Section Styles (page-index__brand-section) */
/* -------------------------------------- */
.page-index__brand-section {
  padding: 60px 20px;
  background: var(--secondary-color); /* Light background for brand section */
  color: var(--text-color-dark);
}

.page-index__brand-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
  box-sizing: border-box;
}

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

.page-index__brand-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-bottom: 40px;
}

.page-index__brand-item {
  background: var(--bg-light-gray);
  padding: 25px;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  text-align: left;
  border: 1px solid var(--border-color);
}

.page-index__brand-item-title {
  color: var(--primary-color);
  margin-top: 0;
  margin-bottom: 15px;
}

.page-index__brand-image {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  margin: 0 auto;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  object-fit: cover;
}

/* -------------------------------------- */
/* FAQ Section Styles (page-index__faq-section) */
/* -------------------------------------- */
.page-index__faq-section {
  padding: 60px 20px;
  background: var(--bg-light-gray);
  color: var(--text-color-dark);
}

.page-index__faq-container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 15px;
  box-sizing: border-box;
}

.page-index__faq-main-title {
  color: var(--primary-color);
  margin-bottom: 40px;
}

.page-index__faq-list {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

/* details as FAQ card */
details.page-index__faq-item {
  border-radius: 8px;
  border: 1px solid var(--border-color);
  overflow: hidden;
  background: var(--secondary-color);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}
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;
  color: var(--text-color-dark); /* Ensure question text is dark */
}
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: var(--bg-light-gray);
}
.page-index__faq-qtext {
  flex: 1;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  text-align: left;
  color: var(--text-color-dark);
}
.page-index__faq-toggle {
  font-size: 24px;
  font-weight: bold;
  color: var(--primary-color); /* Toggle icon uses primary color */
  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(--bg-light-gray);
  border-radius: 0 0 8px 8px;
  color: var(--text-color-dark);
}
details.page-index__faq-item .page-index__faq-answer p {
  margin-bottom: 0;
}

/* -------------------------------------- */
/* Blog List Section Styles (page-index__blog-section) */
/* -------------------------------------- */
.page-index__blog-section {
  padding: 60px 20px;
  background: var(--secondary-color); /* Light background */
  color: var(--text-color-dark);
}

.page-index__blog-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
  box-sizing: border-box;
}

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

.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(--bg-light-gray);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid var(--border-color);
}

.page-index__blog-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
}

.page-index__blog-link {
  display: block;
  text-decoration: none;
  color: inherit;
  padding-bottom: 20px; /* Add padding for content */
}

.page-index__blog-item-image {
  width: 100%;
  height: 220px; /* Fixed height for consistency */
  object-fit: cover;
  margin-bottom: 15px;
}

.page-index__blog-item-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--primary-color);
  padding: 0 20px;
  margin-bottom: 10px;
}

.page-index__blog-item-excerpt {
  font-size: 0.95rem;
  color: var(--text-color-dark);
  padding: 0 20px;
  margin-bottom: 15px;
}

.page-index__blog-item-date {
  font-size: 0.85rem;
  color: #777;
  padding: 0 20px;
  display: block;
}

.page-index__blog-cta {
  text-align: center;
}

/* -------------------------------------- */
/* 🚨 Global Image Styles (for all images on the page) */
/* -------------------------------------- */
.page-index img {
  max-width: 100%;
  height: auto;
  display: block;
  object-fit: cover; /* Default object-fit for content images */
  border: none; /* Ensure no default borders */
  filter: none; /* 🚨 NO filter property to change image color */
}

/* -------------------------------------- */
/* 🚨 Responsive Design (Mobile First - max-width: 768px) */
/* -------------------------------------- */
@media (max-width: 768px) {
  .page-index {
    font-size: 15px;
    line-height: 1.5;
  }

  .page-index h1 {
    font-size: clamp(1.8rem, 6vw, 2.5rem);
  }

  .page-index h2 {
    font-size: clamp(1.6rem, 5vw, 2.2rem);
  }

  .page-index h3 {
    font-size: clamp(1.2rem, 4vw, 1.6rem);
  }

  .page-index__section {
    padding: 30px 15px;
  }

  .page-index__container {
    padding: 0 15px;
  }
  
  /* 🚨 Video Section Mobile */
  .page-index__video-section {
    padding-top: 10px !important; /* body already handles header offset */
    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; /* Use contain for mobile to ensure video fits */
  }
  
  .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;
  }

  /* 🚨 H1 Title Section Mobile */
  .page-index__title-section {
    padding: 30px 15px;
  }

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

  .page-index__cta-buttons {
    flex-direction: column; /* Stack buttons vertically on mobile */
    gap: 10px;
    padding: 0 15px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    overflow: hidden !important;
  }

  .page-index__cta-button {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !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: 40px 15px;
  }

  .page-index__brand-content {
    grid-template-columns: 1fr; /* Single column on mobile */
  }

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

  /* 🚨 FAQ Section Mobile */
  .page-index__faq-section {
    padding: 40px 15px;
  }

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

  /* 🚨 Blog Section Mobile */
  .page-index__blog-section {
    padding: 40px 15px;
  }

  .page-index__blog-list {
    grid-template-columns: 1fr; /* Single column on mobile */
  }

  .page-index__blog-item-image {
    height: 180px; /* Adjust height for mobile */
  }

  .page-index__blog-item-title {
    font-size: 1.1rem;
    padding: 0 15px;
  }

  .page-index__blog-item-excerpt {
    font-size: 0.9rem;
    padding: 0 15px;
  }

  .page-index__blog-item-date {
    padding: 0 15px;
  }

  /* 🚨 Global Image & Video Mobile Adaptation */
  .page-index img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }
  
  .page-index video,
  .page-index__video {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }

  .page-index__section,
  .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; /* Prevent content overflow */
  }

  /* Ensure all containers for images/videos/buttons are correctly padded and sized */
  .page-index__video-container,
  .page-index__video-wrapper,
  .page-index__cta-buttons,
  .page-index__brand-container,
  .page-index__faq-container,
  .page-index__blog-container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
    overflow: hidden !important;
  }

  /* Specific override for video-container which might have 0 padding */
  .page-index__video-container {
    padding-left: 0 !important;
    padding-right: 0 !important;
  }
}