.page-download {
  font-family: Arial, sans-serif;
  color: #333333; /* Default text color for light body background */
  background-color: #ffffff; /* Explicitly set for clarity, matching default body */
}

/* Hero Section */
.page-download__hero-section {
  display: flex;
  flex-direction: column; /* Default to column for image-on-top, text-below */
  align-items: center;
  gap: 30px;
  padding: 10px 20px 60px;
  text-align: center;
  background-color: #f5f5f5;
}

.page-download__hero-image-container {
  width: 100%;
  max-width: 800px; /* Limit image width */
}

.page-download__hero-image {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 10px;
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
}

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

.page-download__main-title {
  font-size: clamp(2.2em, 4vw, 3.5em); /* Responsive font size */
  font-weight: bold;
  line-height: 1.2;
  color: #017439;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.page-download__hero-description {
  font-size: 1.15em;
  line-height: 1.6;
  margin-bottom: 30px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.page-download__cta-buttons {
  display: flex;
  gap: 15px;
  justify-content: center;
  flex-wrap: wrap; /* Allow buttons to wrap */
  width: 100%;
  max-width: 600px; /* Limit button group width */
  margin: 0 auto;
}

.page-download__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 15px 30px;
  border-radius: 8px;
  font-size: 1.1em;
  font-weight: bold;
  text-decoration: none;
  transition: background-color 0.3s ease, transform 0.3s ease;
  min-width: 200px;
  text-align: center;
  max-width: 100%; /* Ensure button doesn't overflow */
  box-sizing: border-box; /* Include padding/border in width */
  white-space: normal; /* Allow text wrapping */
  word-wrap: break-word; /* Break long words */
}

.page-download__btn-primary {
  background-color: #C30808; /* Register/Login color */
  color: #FFFF00; /* Register/Login font color */
  border: 2px solid #C30808;
}

.page-download__btn-primary:hover {
  background-color: #e00b0b;
  transform: translateY(-2px);
}

.page-download__btn-secondary {
  background-color: #017439;
  color: #ffffff;
  border: 2px solid #017439;
}

.page-download__btn-secondary:hover {
  background-color: #005a2d;
  transform: translateY(-2px);
}

/* General Section Styling */
.page-download__section {
  padding: 60px 20px;
  margin-bottom: 20px;
  background-color: #ffffff;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.page-download__section-title {
  font-size: clamp(1.8em, 3.5vw, 2.8em);
  color: #017439;
  text-align: center;
  margin-bottom: 40px;
  font-weight: bold;
}

.page-download__section-title--light {
  color: #ffffff; /* For dark sections */
}

.page-download__section-description {
  font-size: 1.1em;
  line-height: 1.6;
  text-align: center;
  max-width: 800px;
  margin: 0 auto 40px;
}

.page-download__article-wrap {
  max-width: 1150px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Grid Layouts */
.page-download__grid {
  display: grid;
  gap: 30px;
  margin-bottom: 40px;
}

.page-download__grid--3-cols {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.page-download__grid--2-cols {
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
}

/* Card Styling */
.page-download__card {
  background-color: #f9f9f9;
  border-radius: 10px;
  padding: 25px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.page-download__card-title {
  font-size: 1.4em;
  color: #017439;
  margin-bottom: 15px;
  font-weight: bold;
}

.page-download__card-image {
  width: 100%;
  max-width: 600px; /* Ensure images in cards are responsive */
  height: auto;
  border-radius: 8px;
  margin-bottom: 15px;
  display: block;
}

.page-download__card-text {
  font-size: 1em;
  line-height: 1.6;
  color: #555555;
}

/* Guide Blocks (Android/iOS) */
.page-download__guide-block {
  margin-bottom: 60px;
}

.page-download__guide-title {
  font-size: clamp(1.6em, 3vw, 2.2em);
  color: #017439;
  text-align: center;
  margin-bottom: 30px;
  font-weight: bold;
}

.page-download__steps {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 30px;
}

.page-download__step-item {
  display: flex;
  align-items: flex-start;
  gap: 15px;
  text-align: left;
}

.page-download__step-number {
  background-color: #017439;
  color: #ffffff;
  border-radius: 50%;
  width: 35px;
  height: 35px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  flex-shrink: 0;
  font-size: 1.1em;
}

.page-download__step-content {
  flex-grow: 1;
}

.page-download__step-heading {
  font-size: 1.2em;
  color: #017439;
  margin-top: 0;
  margin-bottom: 5px;
  font-weight: bold;
}

.page-download__step-content p {
  font-size: 1em;
  line-height: 1.5;
  color: #555555;
}

.page-download__step-content a {
  color: #017439;
  text-decoration: underline;
}

.page-download__step-content a:hover {
  color: #005a2d;
}

.page-download__figure {
  margin: 40px auto;
  max-width: 680px;
  text-align: center;
}

.page-download__figure-image {
  width: 100%;
  height: auto;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  display: block;
}

.page-download__figure-caption {
  font-size: 0.9em;
  color: #777777;
  margin-top: 10px;
}

/* Features Section - Dark Background */
.page-download__dark-section {
  background-color: #017439;
  color: #ffffff;
}

.page-download__dark-section .page-download__section-description,
.page-download__dark-section .page-download__feature-description {
  color: #f0f0f0;
}

.page-download__feature-item {
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  padding: 25px;
  text-align: left;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.page-download__feature-title {
  font-size: 1.3em;
  color: #ffffff;
  margin-bottom: 10px;
  font-weight: bold;
}

.page-download__feature-description {
  font-size: 1em;
  line-height: 1.6;
}

.page-download__feature-description a {
  color: #FFFF00;
  text-decoration: underline;
}

.page-download__feature-description a:hover {
  color: #ffd700;
}

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

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

.page-download__faq-item {
  background-color: #ffffff;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  margin-bottom: 15px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.page-download__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 25px;
  font-size: 1.15em;
  font-weight: bold;
  color: #017439;
  cursor: pointer;
  background-color: #eaf7ed; /* Light green background for summary */
  list-style: none; /* Hide default marker for details */
}

.page-download__faq-question::-webkit-details-marker {
  display: none; /* Hide default marker for webkit browsers */
}

.page-download__faq-qtext {
  flex-grow: 1;
}

.page-download__faq-toggle {
  font-size: 1.5em;
  line-height: 1;
  transition: transform 0.3s ease;
  color: #017439;
}

.page-download__faq-item[open] .page-download__faq-toggle {
  transform: rotate(45deg); /* Rotate '+' to 'x' or similar */
}

.page-download__faq-answer {
  padding: 0 25px 20px;
  font-size: 1em;
  line-height: 1.6;
  color: #555555;
  max-height: 0; /* Initial state for smooth transition */
  overflow: hidden;
  transition: max-height 0.3s ease-out;
}

.page-download__faq-item[open] .page-download__faq-answer {
  max-height: 2000px; /* Sufficient height for content */
  transition: max-height 0.5s ease-in;
}

.page-download__faq-answer p {
  margin-top: 10px;
}

.page-download__faq-answer a {
  color: #017439;
  text-decoration: underline;
}

.page-download__faq-answer a:hover {
  color: #005a2d;
}

/* Bottom CTA Section */
.page-download__cta-bottom-section {
  text-align: center;
  padding: 80px 20px;
  background-color: #eaf7ed; /* Light green background */
}

.page-download__cta-bottom-section .page-download__section-title {
  color: #017439;
}

.page-download__cta-bottom-section .page-download__section-description {
  color: #333333;
}


/* --- Responsive Design --- */
@media (max-width: 1024px) {
  .page-download__hero-section {
    padding: 10px 15px 50px;
  }

  .page-download__main-title {
    font-size: clamp(2em, 4.5vw, 3em);
  }

  .page-download__hero-description {
    font-size: 1.1em;
  }

  .page-download__section {
    padding: 50px 15px;
  }

  .page-download__section-title {
    font-size: clamp(1.6em, 3.8vw, 2.5em);
  }

  .page-download__article-wrap {
    padding: 0 15px;
  }

  .page-download__grid--3-cols {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  }

  .page-download__grid--2-cols {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  }

  .page-download__guide-title {
    font-size: clamp(1.4em, 2.8vw, 2em);
  }

  .page-download__btn {
    padding: 12px 25px;
    font-size: 1em;
    min-width: 180px;
  }

  .page-download__faq-question {
    padding: 15px 20px;
    font-size: 1.1em;
  }

  .page-download__faq-answer {
    padding: 0 20px 15px;
  }
}


@media (max-width: 768px) {
  /* 1. 顶区标题 + 双 CTA */
  .page-download__hero-section {
    padding-top: 10px !important; /* Specific top padding for mobile */
    padding-bottom: 40px;
    gap: 20px;
  }

  .page-download__main-title {
    font-size: clamp(1.8em, 7vw, 2.5em) !important; /* Smaller, more aggressive clamp for mobile */
    margin-bottom: 15px;
  }

  .page-download__hero-description {
    font-size: 1em;
    margin-bottom: 25px;
  }

  .page-download__cta-buttons {
    flex-direction: column !important; /* Stack buttons vertically */
    gap: 10px;
    padding-left: 15px;
    padding-right: 15px;
  }

  .page-download__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;
    min-width: unset; /* Remove min-width for full flexibility */
  }

  /* 2. 单栏长文容器 */
  .page-download__section {
    padding: 30px 15px !important; /* Smaller padding for sections */
    margin-bottom: 15px;
  }

  .page-download__section-title {
    font-size: clamp(1.5em, 6vw, 2em) !important;
    margin-bottom: 30px;
  }

  .page-download__section-description {
    font-size: 0.95em;
    margin-bottom: 30px;
    padding: 0 10px;
  }

  .page-download__article-wrap {
    padding: 0 15px !important;
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }

  /* 3. 通用图片与 figure */
  .page-download img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    box-sizing: border-box !important;
  }

  .page-download__hero-image-container,
  .page-download__card-image,
  .page-download__figure-image {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .page-download__figure {
    margin: 20px auto;
    padding: 0 10px;
  }

  .page-download__figure-caption {
    font-size: 0.85em;
  }

  /* 4. 按钮与按钮容器 (already covered in top CTA, but explicitly adding for general) */
  .page-download__cta-buttons,
  .page-download__button-group,
  .page-download__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;
    flex-direction: column; /* Ensure vertical stacking for multiple buttons */
  }

  /* 5. 注册教程与 FAQ 区块 */
  .page-download__guide-block {
    margin-bottom: 40px;
  }

  .page-download__guide-title {
    font-size: clamp(1.3em, 5vw, 1.8em) !important;
    margin-bottom: 20px;
  }

  .page-download__step-item {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 5px;
  }

  .page-download__step-number {
    margin-bottom: 10px;
  }

  .page-download__step-heading {
    font-size: 1.1em;
    margin-bottom: 5px;
  }

  .page-download__step-content p {
    font-size: 0.95em;
  }

  .page-download__grid--3-cols,
  .page-download__grid--2-cols {
    grid-template-columns: 1fr !important;
  }

  .page-download__card {
    padding: 20px;
  }

  .page-download__card-title {
    font-size: 1.2em;
  }

  .page-download__faq-question {
    font-size: 1em !important;
    padding: 15px 20px;
  }

  .page-download__faq-answer {
    font-size: 0.95em;
    padding: 0 20px 15px;
  }

  .page-download__cta-bottom-section {
    padding: 50px 15px;
  }
}