/* style/download.css */
:root {
  --primary-color: #2F6BFF;
  --secondary-color: #6FA3FF;
  --text-main-color: #1F2D3D;
  --text-dark-bg: #FFFFFF;
  --background-light: #F4F7FB;
  --card-bg: #FFFFFF;
  --border-color: #D6E2FF;
  --button-gradient: linear-gradient(180deg, #4A8BFF 0%, #2F6BFF 100%);
  --glow-color: #A5C4FF;
  --header-offset: 122px; /* Placeholder, actual value from shared.css */
}

.page-download {
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
  color: var(--text-main-color); /* Default text color for light backgrounds */
  background-color: var(--background-light); /* Default background */
}

.page-download__hero-section {
  padding-top: 10px; /* Minimal top padding, rely on body for header offset */
  padding-bottom: 60px;
  padding-left: 0;
  padding-right: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  background: var(--button-gradient);
  color: var(--text-dark-bg);
}

.page-download__hero-image-wrapper {
  width: 100%;
  max-width: 100%;
  overflow: hidden;
  box-sizing: border-box;
}

.page-download__hero-image {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  max-height: 500px; /* Limit hero image height */
}

.page-download__hero-content {
  max-width: 800px;
  margin-top: 40px;
  padding: 0 20px;
}

.page-download__main-title {
  font-size: clamp(2em, 4vw, 3.2em); /* Responsive font size */
  font-weight: 700;
  margin-bottom: 20px;
  line-height: 1.2;
  color: var(--text-dark-bg);
}

.page-download__description {
  font-size: 1.1em;
  margin-bottom: 30px;
  color: rgba(255, 255, 255, 0.9);
}

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

.page-download__cta-buttons--single {
  margin-top: 30px;
}

.page-download__btn-primary,
.page-download__btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 30px;
  border-radius: 8px;
  font-size: 1.1em;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  min-width: 180px;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

.page-download__btn-primary {
  background: var(--button-gradient);
  color: var(--text-dark-bg);
  border: 2px solid transparent;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-download__btn-primary:hover {
  background: linear-gradient(180deg, #2F6BFF 0%, #4A8BFF 100%);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
  transform: translateY(-2px);
}

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

.page-download__btn-secondary:hover {
  background: var(--primary-color);
  color: var(--text-dark-bg);
  transform: translateY(-2px);
}

.page-download__content-area {
  max-width: 1200px;
  margin: 0 auto;
  padding: 60px 20px;
}

.page-download__section-title {
  font-size: clamp(1.8em, 3.5vw, 2.8em);
  font-weight: 700;
  text-align: center;
  margin-bottom: 40px;
  line-height: 1.3;
}

.page-download__intro-section .page-download__section-title,
.page-download__login-section .page-download__section-title,
.page-download__faq-section .page-download__section-title {
  color: var(--text-main-color);
}

.page-download__download-guide-section .page-download__section-title,
.page-download__benefits-section .page-download__section-title,
.page-download__cta-final-section .page-download__section-title {
  color: var(--text-dark-bg);
}

.page-download__text-block {
  font-size: 1.05em;
  text-align: center;
  max-width: 900px;
  margin: 0 auto 50px auto;
  line-height: 1.7;
}

.page-download__intro-section .page-download__text-block,
.page-download__login-section .page-download__text-block,
.page-download__faq-section .page-download__text-block {
  color: var(--text-main-color);
}

.page-download__download-guide-section .page-download__text-block,
.page-download__benefits-section .page-download__text-block,
.page-download__cta-final-section .page-download__text-block {
  color: rgba(255, 255, 255, 0.85);
}

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

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

.page-download__card {
  background: var(--card-bg);
  color: var(--text-main-color);
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  padding: 30px;
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.page-download__features-grid,
.page-download__guide-cards,
.page-download__benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-download__feature-icon,
.page-download__guide-image,
.page-download__benefit-image {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
  margin-bottom: 25px;
  object-fit: cover;
  min-height: 200px; /* Ensure minimum size */
}

.page-download__feature-title,
.page-download__guide-title,
.page-download__benefit-title {
  font-size: 1.5em;
  font-weight: 600;
  margin-bottom: 15px;
  color: var(--primary-color);
}

.page-download__guide-card .page-download__guide-title {
  color: var(--primary-color);
}

.page-download__feature-description,
.page-download__guide-list,
.page-download__benefit-description {
  font-size: 1em;
  line-height: 1.7;
  color: var(--text-main-color);
}

.page-download__guide-list {
  text-align: left;
  margin-bottom: 25px;
  padding-left: 25px;
  list-style-type: decimal;
}

.page-download__guide-list li {
  margin-bottom: 10px;
  color: var(--text-main-color);
}

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

.page-download__step-card {
  padding: 25px;
}

.page-download__step-title {
  font-size: 1.3em;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--primary-color);
}

.page-download__step-description {
  font-size: 0.95em;
  line-height: 1.6;
  color: var(--text-main-color);
}

.page-download__faq-list {
  margin-top: 40px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.page-download__faq-item {
  margin-bottom: 15px;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
  overflow: hidden;
  text-align: left;
}

.page-download__faq-item summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  font-size: 1.15em;
  font-weight: 600;
  cursor: pointer;
  list-style: none; /* Hide default marker */
  color: var(--text-main-color);
}

.page-download__faq-item summary::-webkit-details-marker {
  display: none;
}

.page-download__faq-qtext {
  flex-grow: 1;
  color: var(--text-main-color);
}

.page-download__faq-toggle {
  font-size: 1.5em;
  margin-left: 15px;
  color: var(--primary-color);
}

.page-download__faq-answer {
  padding: 0 25px 20px 25px;
  font-size: 1em;
  line-height: 1.7;
  color: var(--text-main-color);
}

.page-download__faq-item[open] .page-download__faq-toggle {
  content: '−'; /* Change to minus when open, handled by JS fallback */
}

/* Ensure images are responsive by default */
.page-download img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Mobile responsive styles */
@media (max-width: 1024px) {
  .page-download__main-title {
    font-size: clamp(2em, 5vw, 3em);
  }

  .page-download__section-title {
    font-size: clamp(1.6em, 4vw, 2.5em);
  }

  .page-download__hero-image {
    max-height: 400px;
  }

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

  .page-download__btn-primary,
  .page-download__btn-secondary {
    width: 80%;
    max-width: 300px;
    margin: 0 auto;
  }

  .page-download__features-grid,
  .page-download__guide-cards,
  .page-download__benefits-grid,
  .page-download__login-steps {
    grid-template-columns: 1fr;
  }

  .page-download__faq-item summary {
    font-size: 1.1em;
    padding: 18px 20px;
  }
}

@media (max-width: 768px) {
  .page-download {
    font-size: 16px;
    line-height: 1.6;
  }
  
  /* HERO 主图区域 */
  .page-download__hero-section {
    padding-top: 10px !important; /* Minimal top padding */
    padding-bottom: 40px;
  }

  .page-download__hero-image {
    max-height: 300px !important;
    width: 100% !important;
    height: auto !important;
  }

  .page-download__hero-content {
    margin-top: 30px;
    padding: 0 15px;
  }

  .page-download__main-title {
    font-size: clamp(1.8em, 7vw, 2.5em);
    margin-bottom: 15px;
  }

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

  /* 按钮与按钮容器 */
  .page-download__cta-buttons {
    flex-direction: column !important;
    gap: 10px;
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  .page-download__cta-buttons--single {
    margin-top: 20px;
  }

  .page-download__btn-primary,
  .page-download__btn-secondary,
  .page-download a[class*="button"],
  .page-download a[class*="btn"] {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
    padding: 12px 20px;
    font-size: 1em;
  }

  /* 通用图片与容器 */
  .page-download img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }
  
  .page-download__content-area,
  .page-download__section,
  .page-download__card,
  .page-download__container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  .page-download__section-title {
    font-size: clamp(1.5em, 6vw, 2.2em);
    margin-bottom: 30px;
  }

  .page-download__text-block {
    font-size: 0.95em;
    margin-bottom: 30px;
  }

  /* 产品展示图区域 (features, guide, benefits grid) */
  .page-download__features-grid,
  .page-download__guide-cards,
  .page-download__benefits-grid,
  .page-download__login-steps {
    gap: 20px;
    margin-top: 20px;
  }

  .page-download__card {
    padding: 20px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  }

  .page-download__feature-icon,
  .page-download__guide-image,
  .page-download__benefit-image {
    margin-bottom: 15px;
  }

  .page-download__feature-title,
  .page-download__guide-title,
  .page-download__benefit-title {
    font-size: 1.3em;
    margin-bottom: 10px;
  }

  .page-download__guide-list {
    padding-left: 20px;
    font-size: 0.9em;
  }

  .page-download__login-steps .page-download__step-card {
    padding: 20px;
  }

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

  .page-download__faq-item summary {
    font-size: 1em;
    padding: 15px 18px;
  }

  .page-download__faq-answer {
    padding: 0 18px 15px 18px;
    font-size: 0.95em;
  }

  .page-download__faq-toggle {
    font-size: 1.3em;
  }
}