:root {
  --primary-color: #017439;
  --secondary-color: #FFFFFF;
  --text-dark: #333333;
  --text-light: #ffffff;
  --button-register-login-bg: #C30808;
  --button-register-login-text: #FFFFFF; /* Adjusted for WCAG AA contrast */
}

.page-download {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-dark); /* Default text color on light background */
  background-color: var(--secondary-color); /* Explicitly white background */
}

.page-download__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

/* Hero Section */
.page-download__hero-section {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 60px 20px;
  background: linear-gradient(135deg, var(--primary-color), #00A651); /* Gradient from primary to a lighter green */
  color: var(--text-light);
  padding-top: var(--header-offset, 120px); /* Fixed header spacing */
}

.page-download__hero-container {
  display: flex;
  flex-direction: column; /* Default stack for mobile first, then row for desktop */
  align-items: center;
  gap: 40px;
  width: 100%;
}

.page-download__hero-content {
  flex: 1;
  text-align: center;
}

.page-download__main-title {
  font-size: 2.8em;
  margin-bottom: 20px;
  color: var(--text-light);
  font-weight: bold;
}

.page-download__intro-text {
  font-size: 1.1em;
  margin-bottom: 30px;
  color: var(--text-light);
}

.page-download__download-buttons {
  display: flex;
  flex-wrap: wrap; /* Allow wrapping on small screens */
  gap: 20px;
  justify-content: center;
  margin-bottom: 30px;
}

.page-download__btn-primary,
.page-download__btn-secondary {
  display: inline-block;
  padding: 15px 40px;
  border-radius: 8px;
  font-size: 1.1em;
  font-weight: bold;
  text-decoration: none;
  transition: all 0.3s ease;
  box-sizing: border-box; /* Ensure padding doesn't push width */
  max-width: 100%; /* For mobile responsiveness */
  white-space: normal; /* Allow text wrap */
  word-wrap: break-word; /* Allow text wrap */
}

.page-download__btn-primary {
  background: var(--button-register-login-bg); /* Red for download/register/login */
  color: var(--button-register-login-text); /* White text for contrast */
  border: 2px solid var(--button-register-login-bg);
}

.page-download__btn-primary:hover {
  background: #a80707; /* Darker red */
  border-color: #a80707;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.page-download__btn-secondary {
  background: var(--secondary-color);
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.page-download__btn-secondary:hover {
  background: var(--primary-color);
  color: var(--secondary-color);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.page-download__qr-codes {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 30px;
  margin-top: 30px;
}

.page-download__qr-item {
  text-align: center;
  color: var(--text-light);
}

.page-download__qr-item img {
  width: 200px;
  height: 200px;
  border-radius: 8px;
  margin-bottom: 10px;
  object-fit: cover;
  min-width: 200px; /* Enforce minimum size */
  min-height: 200px; /* Enforce minimum size */
}

.page-download__hero-image {
  width: 100%;
  max-width: 600px; /* Max width for image */
  margin-top: 40px;
}

.page-download__hero-image img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 12px;
  object-fit: cover;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  min-width: 200px; /* Enforce minimum size */
  min-height: 200px; /* Enforce minimum size */
}

/* General Section Styles */
.page-download__section {
  padding: 80px 0;
  border-bottom: 1px solid #eee;
}

.page-download__dark-bg {
  background-color: var(--primary-color);
  color: var(--text-light);
}

.page-download__light-bg {
  background-color: var(--secondary-color);
  color: var(--text-dark);
}

.page-download__section-title {
  font-size: 2.2em;
  text-align: center;
  margin-bottom: 50px;
  color: var(--primary-color); /* Title color */
}
.page-download__dark-bg .page-download__section-title {
  color: var(--text-light);
}

/* Guide Section */
.page-download__guide-section {
  background-color: #f9f9f9;
}

.page-download__guide-steps {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  justify-content: center;
}

.page-download__guide-item {
  flex: 1;
  min-width: 300px;
  max-width: 500px;
  background: var(--secondary-color);
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
}

.page-download__guide-subtitle {
  font-size: 1.6em;
  color: var(--primary-color);
  margin-bottom: 20px;
}

.page-download__guide-item ol {
  list-style-type: decimal;
  padding-left: 20px;
  margin-bottom: 20px;
}

.page-download__guide-item li {
  margin-bottom: 15px;
  font-size: 1.05em;
}

.page-download__guide-item img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
  margin-top: 20px;
  object-fit: cover;
  min-width: 200px; /* Enforce minimum size */
  min-height: 200px; /* Enforce minimum size */
}

/* Reasons Section */
.page-download__reasons-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.page-download__reason-card {
  background: var(--secondary-color);
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
  text-align: center;
  transition: transform 0.3s ease;
}

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

.page-download__reason-title {
  font-size: 1.5em;
  color: var(--primary-color);
  margin-bottom: 15px;
}

.page-download__cta-bottom {
  text-align: center;
  margin-top: 60px;
}

/* Features Section */
.page-download__features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 40px;
}

.page-download__feature-item {
  background: #fdfdfd;
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
  text-align: center;
}

.page-download__feature-item img {
  width: 100%;
  height: auto;
  max-height: 250px;
  object-fit: contain; /* Use contain to show full image without cropping */
  border-radius: 8px;
  margin-bottom: 20px;
  min-width: 200px; /* Enforce minimum size */
  min-height: 200px; /* Enforce minimum size */
}

.page-download__feature-title {
  font-size: 1.5em;
  color: var(--primary-color);
  margin-bottom: 15px;
}

/* FAQ Section */
.page-download__faq-section {
  background-color: #f9f9f9;
}

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

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

/* FAQ默认状态 - 答案隐藏 */
.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;
}

/* FAQ展开状态 - 🚨 使用!important和足够大的max-height确保一定能展开 */
.page-download__faq-item.active .page-download__faq-answer {
  max-height: 2000px !important; /* 🚨 使用!important确保优先级，值足够大以容纳任何内容 */
  padding: 20px 15px !important;
  opacity: 1;
  background: #f9f9f9;
  border-radius: 0 0 5px 5px;
}

/* 问题样式 */
.page-download__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 20px;
  background: #fff;
  border: 1px solid #e0e0e0;
  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: #f5f5f5;
  border-color: #d0d0d0;
}

.page-download__faq-question:active {
  background: #eeeeee;
}

/* 问题标题样式 */
.page-download__faq-question h3 {
  margin: 0;
  padding: 0;
  flex: 1;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  pointer-events: none; /* 防止h3标签阻止点击事件 */
  color: var(--text-dark);
}

/* 切换图标 */
.page-download__faq-toggle {
  font-size: 24px;
  font-weight: bold;
  line-height: 1;
  color: #666;
  transition: transform 0.3s ease, color 0.3s ease;
  flex-shrink: 0;
  margin-left: 15px;
  pointer-events: none; /* 防止图标阻止点击事件 */
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
}

.page-download__faq-item.active .page-download__faq-toggle {
  color: var(--primary-color);
  transform: rotate(45deg); /* Rotate for 'x' effect, or just change text to '-' */
}

/* News Section */
.page-download__news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.page-download__news-card {
  display: block;
  background: var(--secondary-color);
  padding: 25px;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
  text-decoration: none;
  color: var(--text-dark);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-download__news-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.12);
}

.page-download__news-title {
  font-size: 1.4em;
  color: var(--primary-color);
  margin-bottom: 10px;
}

.page-download__news-excerpt {
  font-size: 0.95em;
  margin-bottom: 15px;
  line-height: 1.5;
}

.page-download__news-date {
  font-size: 0.85em;
  color: #777;
  display: block;
}

/* Responsive Design */
@media (min-width: 769px) {
  .page-download__hero-container {
    flex-direction: row;
    text-align: left;
  }

  .page-download__hero-content {
    text-align: left;
    padding-right: 40px;
  }

  .page-download__hero-image {
    margin-top: 0;
  }

  .page-download__main-title {
    font-size: 3.5em;
  }
}

@media (max-width: 768px) {
  .page-download__hero-section {
    padding-top: var(--header-offset, 120px) !important; /* Mobile fixed header spacing */
    padding-bottom: 40px;
    padding-left: 15px;
    padding-right: 15px;
  }

  .page-download__main-title {
    font-size: 2em;
  }

  .page-download__intro-text {
    font-size: 1em;
  }

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