:root {
  --primary-color: #017439;
  --secondary-color: #FFFFFF;
  --text-dark: #333333;
  --text-light: #ffffff;
  --bg-light: #ffffff;
  --bg-dark: #017439; /* Using primary color for dark background sections */
  --btn-register: #C30808;
  --btn-login: #C30808;
  --btn-font-color: #FFFF00;
}

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

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

.page-download__section-title {
  font-size: 36px;
  color: var(--primary-color);
  text-align: center;
  margin-bottom: 20px;
  font-weight: bold;
}

.page-download__section-description {
  font-size: 18px;
  text-align: center;
  max-width: 800px;
  margin: 0 auto 40px auto;
  color: var(--text-dark);
}

/* 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;
  padding-top: var(--header-offset, 120px); /* Ensure spacing from fixed header */
  background: linear-gradient(135deg, var(--primary-color) 0%, #333 100%); /* Darker background for hero */
  color: var(--text-light);
}

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

.page-download__hero-image {
  width: 100%;
  margin-bottom: 30px;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

.page-download__hero-image img {
  width: 100%;
  height: auto;
  max-width: 100%;
  display: block;
  object-fit: cover;
}

.page-download__hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  width: 100%;
}

.page-download__main-title {
  font-size: 48px;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text-light);
  line-height: 1.2;
}

.page-download__hero-description {
  font-size: 20px;
  margin-bottom: 40px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
  color: rgba(255, 255, 255, 0.9);
}

.page-download__cta-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
  margin-top: 30px;
}

.page-download__cta-button {
  display: inline-block;
  padding: 18px 45px;
  text-decoration: none;
  border-radius: 8px;
  font-size: 20px;
  font-weight: bold;
  transition: all 0.3s ease;
  min-width: 250px;
  text-align: center;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

.page-download__btn-download {
  background: var(--primary-color);
  color: var(--text-light);
  border: 2px solid var(--primary-color);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-download__btn-download:hover {
  background: #005a2e; /* Slightly darker green */
  border-color: #005a2e;
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

/* Introduction Section */
.page-download__introduction-section {
  padding: 80px 0;
  background-color: var(--bg-light);
  color: var(--text-dark);
}

.page-download__features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.page-download__feature-item {
  background: var(--secondary-color);
  border-radius: 12px;
  padding: 30px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid #e0e0e0;
}

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

.page-download__feature-item img {
  width: 100%;
  height: auto;
  max-width: 100%;
  min-width: 200px;
  min-height: 200px;
  border-radius: 8px;
  margin-bottom: 20px;
  object-fit: cover;
}

.page-download__feature-title {
  font-size: 24px;
  color: var(--primary-color);
  margin-bottom: 15px;
  font-weight: 600;
}

.page-download__feature-item p {
  font-size: 16px;
  color: var(--text-dark);
  line-height: 1.6;
}

/* How-to-Download Section */
.page-download__how-to-download {
  padding: 80px 0;
  background-color: var(--bg-dark);
  color: var(--text-light);
}

.page-download__how-to-download .page-download__section-title {
  color: var(--text-light);
}

.page-download__how-to-download .page-download__section-description {
  color: rgba(255, 255, 255, 0.8);
}

.page-download__download-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.page-download__step-item {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.page-download__step-icon {
  width: 60px;
  height: 60px;
  line-height: 60px;
  background: var(--secondary-color);
  color: var(--primary-color);
  border-radius: 50%;
  font-size: 32px;
  font-weight: bold;
  margin-bottom: 20px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.page-download__step-title {
  font-size: 24px;
  color: var(--text-light);
  margin-bottom: 15px;
  font-weight: 600;
}

.page-download__step-item p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 20px;
  flex-grow: 1; /* Make paragraphs take available space */
}

.page-download__step-item img {
  width: 100%;
  height: auto;
  max-width: 100%;
  min-width: 200px;
  min-height: 200px;
  border-radius: 8px;
  margin-top: 15px;
  object-fit: cover;
}

.page-download__btn-primary {
  background: var(--secondary-color);
  color: var(--primary-color);
  border: 2px solid var(--secondary-color);
  display: inline-block;
  padding: 12px 25px;
  text-decoration: none;
  border-radius: 8px;
  font-size: 18px;
  font-weight: bold;
  transition: all 0.3s ease;
  margin-top: auto; /* Push to bottom */
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

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

.page-download__btn-login {
  background: var(--btn-login); /* Custom color #C30808 */
  color: var(--btn-font-color); /* Custom color #FFFF00 */
  border: 2px solid var(--btn-login);
  display: inline-block;
  padding: 12px 25px;
  text-decoration: none;
  border-radius: 8px;
  font-size: 18px;
  font-weight: bold;
  transition: all 0.3s ease;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

.page-download__btn-login:hover {
  background: #a30606;
  border-color: #a30606;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.page-download__btn-register {
  background: var(--btn-register); /* Custom color #C30808 */
  color: var(--btn-font-color); /* Custom color #FFFF00 */
  border: 2px solid var(--btn-register);
  display: inline-block;
  padding: 12px 25px;
  text-decoration: none;
  border-radius: 8px;
  font-size: 18px;
  font-weight: bold;
  transition: all 0.3s ease;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

.page-download__btn-register:hover {
  background: #a30606;
  border-color: #a30606;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

/* Benefits Section */
.page-download__benefits-section {
  padding: 80px 0;
  background-color: var(--bg-light);
  color: var(--text-dark);
}

.page-download__benefits-list {
  list-style: none;
  padding: 0;
  margin-top: 50px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.page-download__benefits-list li {
  display: flex;
  align-items: center;
  gap: 20px;
  background: var(--secondary-color);
  padding: 25px;
  border-radius: 12px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
  border: 1px solid #e0e0e0;
  transition: transform 0.3s ease;
}

.page-download__benefits-list li:hover {
  transform: translateY(-5px);
}

.page-download__benefits-list li img {
  width: 200px; /* Must be >= 200px */
  height: 200px; /* Must be >= 200px */
  flex-shrink: 0;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.page-download__benefits-list li span {
  font-size: 17px;
  color: var(--text-dark);
}

/* FAQ Section */
.page-download__faq-section {
  padding: 80px 0;
  background-color: #f9f9f9; /* Slightly off-white for contrast with main light sections */
  color: var(--text-dark);
}

/* FAQ容器样式 */
.page-download__faq-item {
  margin-bottom: 15px;
  border-radius: 5px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

/* 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;
  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;
  border-top: 1px solid #e0e0e0;
}

/* 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: var(--primary-color); /* Use primary color for toggle icon */
  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 minus sign effect */
}


/* Call to Action Section */
.page-download__cta-section {
  padding: 80px 0;
  background-color: var(--bg-dark);
  color: var(--text-light);
  text-align: center;
}

.page-download__cta-section .page-download__section-title {
  color: var(--text-light);
}

.page-download__cta-section .page-download__section-description {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 50px;
}

.page-download__btn-register-lg {
  background: var(--btn-register); /* Custom color #C30808 */
  color: var(--btn-font-color); /* Custom color #FFFF00 */
  border: 2px solid var(--btn-register);
  padding: 20px 50px;
  font-size: 22px;
  border-radius: 10px;
}

.page-download__btn-register-lg:hover {
  background: #a30606;
  border-color: #a30606;
}

.page-download__btn-contact-lg {
  background: var(--secondary-color);
  color: var(--primary-color);
  border: 2px solid var(--secondary-color);
  padding: 20px 50px;
  font-size: 22px;
  border-radius: 10px;
}

.page-download__btn-contact-lg:hover {
  background: var(--primary-color);
  color: var(--secondary-color);
  border-color: var(--primary-color);
}


/* Responsive Design */
@media (max-width: 1024px) {
  .page-download__main-title {
    font-size: 40px;
  }
  .page-download__section-title {
    font-size: 32px;
  }
  .page-download__section-description {
    font-size: 17px;
  }
}

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

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

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

  .page-download__cta-buttons {
    flex-direction: column;
    gap: 15px;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    padding: 0 15px;
  }
  
  .page-download__cta-button {
    min-width: unset;
    width: 100% !important;
    max-width: 100% !important;
    padding: 15px 20px;
    font-size: 18px;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
  }

  .page-download__introduction-section,
  .page-download__how-to-download,
  .page-download__benefits-section,
  .page-download__faq-section,
  .page-download__cta-section {
    padding: 50px 0;
  }

  .page-download__container {
    padding: 0 15px; /* Adjust container padding for mobile */
  }

  .page-download__section-title {
    font-size: 28px;
    margin-bottom: 15px;
  }

  .page-download__section-description {
    font-size: 15px;
    margin-bottom: 30px;
  }

  .page-download__features-grid,
  .page-download__download-steps,
  .page-download__benefits-list {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .page-download__feature-item,
  .page-download__step-item,
  .page-download__benefits-list li {
    padding: 20px;
  }

  .page-download__feature-title,
  .page-download__step-title {
    font-size: 20px;
  }

  .page-download__feature-item img,
  .page-download__step-item img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }
  
  .page-download__benefits-list li img {
    width: 100% !important; /* Ensure it scales down if container is smaller than 200px */
    height: auto !important;
    max-width: 200px !important; /* But don't let it grow beyond 200px if original is 200px */
  }

  /* FAQ mobile styles */
  .page-download__faq-question {
    padding: 15px;
    flex-wrap: wrap;
  }
  
  .page-download__faq-question h3 {
    font-size: 15px;
    margin-bottom: 0;
    width: calc(100% - 40px);
  }
  
  .page-download__faq-toggle {
    margin-left: 10px;
    width: 24px;
    height: 24px;
    font-size: 20px;
  }
  
  .page-download__faq-answer {
    padding: 0 15px;
  }
  
  .page-download__faq-item.active .page-download__faq-answer {
    padding: 15px !important;
  }

  .page-download__btn-register-lg,
  .page-download__btn-contact-lg {
    padding: 15px 30px;
    font-size: 18px;
    width: 100%;
    max-width: 100%;
  }

  /* Ensure all images within .page-download are responsive */
  .page-download img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }
  
  .page-download__section,
  .page-download__card,
  .page-download__container,
  .page-download__download-steps,
  .page-download__cta-buttons {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  .page-download__download-steps .page-download__cta-buttons {
    flex-direction: column;
    gap: 10px;
  }
  .page-download__download-steps .page-download__cta-button {
    width: 100%;
    max-width: 100%;
  }
}

/* Color contrast enforcement */
.page-download__dark-bg {
  background: var(--bg-dark);
  color: var(--text-light);
}

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

.page-download__faq-question h3 {
  color: var(--text-dark); /* Ensure contrast on white background */
}

/* Ensure all content area images are at least 200px where applicable, but also responsive */
/* This is a general rule, specific elements may override */
.page-download__feature-item img,
.page-download__step-item img {
  min-width: 200px;
  min-height: 200px;
}