/* style/download.css */
:root {
  --primary-color: #0056B3;
  --secondary-color: #FFD700;
  --text-light: #ffffff;
  --text-dark: #333333;
  --bg-dark: #0a0a0a;
  --bg-light: #f8f9fa;
  --border-color: #e0e0e0;
}

.page-download {
  background-color: var(--bg-dark);
  color: var(--text-light);
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
}

/* 🚨 桌面端视频区域样式（必须严格遵守） */
.page-download__video-section {
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  /* 🚨 必须添加桌面端padding-top，确保内容不被固定导航栏遮挡 */
  padding-top: 10px; /* Desktop: Adjust based on actual navigation bar height */
  box-sizing: border-box;
}

.page-download__video-container {
  position: relative;
  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-download__video-link {
  display: block;
  text-decoration: none;
  position: relative;
  width: 100%;
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.page-download__video-wrapper {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 aspect ratio - 🚨 PageSpeed optimization: fixed aspect ratio to prevent CLS */
  height: 0;
  overflow: hidden;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.page-download__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 */
}

/* 🚨 Video click hint overlay style (optional, enhances user experience) */
.page-download__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-download__video-link:hover .page-download__video-overlay {
  opacity: 1;
}

.page-download__video-click-hint {
  color: var(--text-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);
  border-radius: 5px;
  white-space: nowrap;
}

/* 🚨 Play Now button style (must be strictly adhered to, located below the video in the center) */
.page-download__video-cta {
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: 30px;
}

.page-download__play-now-button {
  display: inline-block;
  padding: 15px 40px;
  background: var(--primary-color);
  color: var(--text-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-download__play-now-button:hover {
  background: var(--secondary-color);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

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

/* Hero Section */
.page-download__hero-section {
  padding: 80px 20px;
  text-align: center;
  background-color: var(--bg-dark);
  color: var(--text-light);
  box-sizing: border-box;
}

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

.page-download__main-title {
  font-size: 48px;
  margin-bottom: 20px;
  line-height: 1.2;
  color: var(--secondary-color);
}

.page-download__hero-description {
  font-size: 18px;
  margin-bottom: 40px;
  color: rgba(255, 255, 255, 0.8);
}

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

.page-download__cta-button {
  display: inline-block;
  padding: 15px 30px;
  font-size: 18px;
  font-weight: bold;
  text-decoration: none;
  border-radius: 8px;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.page-download__cta-button--primary {
  background-color: var(--primary-color);
  color: var(--text-light);
  border: 2px solid var(--primary-color);
}

.page-download__cta-button--primary:hover {
  background-color: color-mix(in srgb, var(--primary-color) 90%, black);
  border-color: color-mix(in srgb, var(--primary-color) 90%, black);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.page-download__cta-button--secondary {
  background-color: transparent;
  color: var(--secondary-color);
  border: 2px solid var(--secondary-color);
}

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

/* Instructions Section */
.page-download__instructions-section {
  padding: 80px 20px;
  background-color: var(--primary-color);
  color: var(--text-light);
  box-sizing: border-box;
}

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

.page-download__instructions-title {
  font-size: 36px;
  margin-bottom: 20px;
  color: var(--secondary-color);
}

.page-download__instructions-intro {
  font-size: 18px;
  margin-bottom: 50px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.page-download__download-methods {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin-bottom: 60px;
  flex-wrap: wrap;
}

.page-download__download-card {
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  padding: 30px;
  width: 100%;
  max-width: 450px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.page-download__download-card:hover {
  transform: translateY(-5px);
}

.page-download__download-card-title {
  font-size: 28px;
  margin-bottom: 25px;
  color: var(--secondary-color);
}

.page-download__download-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
}

.page-download__qr-code {
  width: 200px;
  height: 200px;
  margin-bottom: 25px;
  border: 5px solid var(--text-light);
  border-radius: 8px;
  object-fit: cover;
}

.page-download__download-steps {
  list-style: none;
  padding: 0;
  margin: 0 0 30px 0;
  text-align: left;
  width: 100%;
}

.page-download__download-steps li {
  margin-bottom: 10px;
  font-size: 16px;
  padding-left: 25px;
  position: relative;
}

.page-download__download-steps li::before {
  content: '✓';
  color: var(--secondary-color);
  position: absolute;
  left: 0;
  font-weight: bold;
}

.page-download__cta-button--download {
  background-color: var(--secondary-color);
  color: var(--text-dark);
  border: none;
  padding: 12px 25px;
  font-size: 16px;
  border-radius: 5px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.page-download__cta-button--download:hover {
  background-color: color-mix(in srgb, var(--secondary-color) 90%, black);
  transform: translateY(-2px);
  box-shadow: 0 6px 14px rgba(0, 0, 0, 0.3);
}

.page-download__benefits {
  text-align: left;
  background-color: rgba(0, 0, 0, 0.2);
  border-radius: 10px;
  padding: 40px;
  margin-top: 40px;
}

.page-download__benefits-title {
  font-size: 32px;
  margin-bottom: 25px;
  color: var(--secondary-color);
  text-align: center;
}

.page-download__benefits-list {
  list-style: none;
  padding: 0;
  margin-bottom: 40px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.page-download__benefits-list li {
  font-size: 17px;
  position: relative;
  padding-left: 30px;
}

.page-download__benefits-list li strong {
  color: var(--secondary-color);
}

.page-download__benefits-list li::before {
  content: '★';
  color: var(--secondary-color);
  position: absolute;
  left: 0;
  font-size: 20px;
  line-height: 1;
}

.page-download__mobile-interface-image {
  width: 100%;
  max-width: 700px;
  height: auto;
  border-radius: 10px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
  margin: 0 auto;
  display: block;
}

/* FAQ Section */
.page-download__faq-section {
  padding: 80px 20px;
  background-color: var(--bg-dark);
  color: var(--text-light);
  box-sizing: border-box;
}

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

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

/* FAQ container style */
.page-download__faq-item {
  margin-bottom: 15px;
  border-radius: 5px;
  overflow: hidden;
}

/* FAQ default state - answer hidden */
.page-download__faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
  padding: 0 15px;
  opacity: 0;
  background: rgba(255, 255, 255, 0.05);
  color: rgba(255, 255, 255, 0.8);
}

/* FAQ expanded state - 🚨 Use !important and a sufficiently large max-height to ensure expansion */
.page-download__faq-item.active .page-download__faq-answer {
  max-height: 2000px !important; /* 🚨 Use !important to ensure priority, value large enough to accommodate any content */
  padding: 20px 15px !important;
  opacity: 1;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 0 0 5px 5px;
}

/* Question style */
.page-download__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 20px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 5px;
  cursor: pointer;
  user-select: none;
  transition: background-color 0.3s ease, border-color 0.3s ease;
  position: relative;
}

.page-download__faq-question:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.3);
}

.page-download__faq-question:active {
  background: rgba(255, 255, 255, 0.2);
}

/* Question title style */
.page-download__faq-question h3 {
  margin: 0;
  padding: 0;
  flex: 1;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text-light);
  pointer-events: none; /* Prevent h3 tag from blocking click event */
}

/* Toggle icon */
.page-download__faq-toggle {
  font-size: 24px;
  font-weight: bold;
  line-height: 1;
  color: var(--secondary-color);
  transition: transform 0.3s ease, color 0.3s ease;
  flex-shrink: 0;
  margin-left: 15px;
  pointer-events: none; /* Prevent icon from blocking click event */
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
}

.page-download__faq-item.active .page-download__faq-toggle {
  color: var(--secondary-color);
  transform: rotate(45deg); /* Use rotation for '-' effect */
}

/* Brand Section */
.page-download__brand-section {
  padding: 80px 20px;
  background-color: rgba(0, 0, 0, 0.4);
  color: var(--text-light);
  box-sizing: border-box;
}

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

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

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

.page-download__brand-item {
  background-color: rgba(255, 255, 255, 0.08);
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-download__brand-item h3 {
  font-size: 24px;
  margin-bottom: 15px;
  color: var(--primary-color);
}

.page-download__brand-item p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.7);
}

.page-download__brand-logo-image {
  width: 100%;
  max-width: 400px;
  height: auto;
  margin: 40px auto 0 auto;
  display: block;
  border-radius: 8px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

/* Blog Section */
.page-download__blog-section {
  padding: 80px 20px;
  background-color: var(--bg-dark);
  color: var(--text-light);
  box-sizing: border-box;
}

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

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

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

.page-download__blog-item {
  background-color: rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease;
}

.page-download__blog-item:hover {
  transform: translateY(-5px);
}

.page-download__blog-link {
  text-decoration: none;
  color: inherit;
  display: block;
  padding-bottom: 20px;
}

.page-download__blog-item-thumbnail {
  width: 100%;
  height: 200px;
  object-fit: cover;
  margin-bottom: 15px;
}

.page-download__blog-item-title {
  font-size: 22px;
  margin: 0 20px 10px 20px;
  color: var(--secondary-color);
}

.page-download__blog-item-excerpt {
  font-size: 15px;
  margin: 0 20px 15px 20px;
  color: rgba(255, 255, 255, 0.7);
}

.page-download__blog-item-date {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
  margin: 0 20px;
  display: block;
}

.page-download__view-all-button-container {
  text-align: center;
  margin-top: 50px;
}

.page-download__cta-button--view-all {
  background-color: var(--primary-color);
  color: var(--text-light);
  border: 2px solid var(--primary-color);
  padding: 12px 30px;
  font-size: 16px;
  border-radius: 5px;
}

.page-download__cta-button--view-all:hover {
  background-color: color-mix(in srgb, var(--primary-color) 90%, black);
  border-color: color-mix(in srgb, var(--primary-color) 90%, black);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

/* 🚨 Mobile responsive design (must be strictly adhered to) */
@media (max-width: 768px) {
  .page-download {
    font-size: 15px;
  }

  /* 🚨 Video area mobile adaptation */
  .page-download__video-section {
    padding-top: 10px !important; /* Mobile: Adjust based on actual mobile navigation bar height */
    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-download__video-container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 0;
    padding-right: 0;
    overflow: hidden !important;
  }
  
  .page-download__video-link {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }
  
  .page-download__video-wrapper {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    border-radius: 4px;
    overflow: hidden !important;
  }
  
  .page-download__video {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    border-radius: 4px;
    object-fit: contain;
  }
  
  .page-download__video-cta {
    margin-top: 20px;
    padding-left: 15px;
    padding-right: 15px;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
  }
  
  .page-download__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-download__video-click-hint {
    font-size: 14px !important;
    padding: 8px 16px !important;
  }

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

  .page-download__main-title {
    font-size: 32px;
  }

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

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

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

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

  .page-download__instructions-title {
    font-size: 28px;
  }

  .page-download__instructions-intro {
    font-size: 16px;
  }

  .page-download__download-methods {
    flex-direction: column;
    gap: 30px;
  }

  .page-download__download-card {
    max-width: 100%;
    padding: 25px;
  }

  .page-download__download-card-title {
    font-size: 24px;
  }

  .page-download__qr-code {
    width: 150px;
    height: 150px;
  }

  .page-download__download-steps li {
    font-size: 15px;
  }

  .page-download__benefits {
    padding: 30px;
  }

  .page-download__benefits-title {
    font-size: 26px;
  }

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

  .page-download__benefits-list li {
    font-size: 16px;
  }

  .page-download__mobile-interface-image {
    max-width: 100%;
  }

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