:root {
  --primary-color: #113B7A;
  --secondary-color: #1D5FD1;
  --text-main-color: #F3F8FF;
  --text-secondary-color: #AFC4E8;
  --card-bg-color: #10233F;
  --button-gradient: linear-gradient(180deg, #2B73F6 0%, #1144A6 100%);
  --border-color: #244D84;
  --glow-color: #4FA8FF;
  --gold-color: #F2C14E;
  --divider-color: #1B3357;
  --deep-navy: #08162B;
}

.page-download {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-main-color); /* Default text color for the page */
  background-color: var(--deep-navy); /* Assumed body background based on shared.css and color scheme */
}

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

.page-download__hero-section {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: 10px; /* Small top padding, header offset handled by body in shared.css */
  padding-bottom: 60px;
  overflow: hidden;
  background-color: var(--primary-color);
}

.page-download__hero-image-wrapper {
  width: 100%;
  max-height: 700px;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
}

.page-download__hero-image {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  min-height: 300px;
}

.page-download__hero-content {
  position: relative;
  z-index: 2;
  margin-top: 40px;
  max-width: 800px;
}

.page-download__main-title {
  font-size: 3.2em;
  font-weight: bold;
  color: var(--text-main-color);
  margin-bottom: 20px;
  line-height: 1.2;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.page-download__description {
  font-size: 1.3em;
  color: var(--text-secondary-color);
  margin-bottom: 40px;
}

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

.page-download__btn-primary,
.page-download__btn-secondary,
.page-download__btn-tertiary {
  display: inline-block;
  padding: 15px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  font-size: 1.1em;
  transition: all 0.3s ease;
  white-space: normal;
  word-wrap: break-word;
  box-sizing: border-box;
}

.page-download__btn-primary {
  background: var(--button-gradient);
  color: var(--text-main-color);
  border: none;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.page-download__btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
  opacity: 0.9;
}

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

.page-download__btn-secondary:hover {
  background-color: var(--gold-color);
  color: var(--deep-navy);
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
}

.page-download__btn-tertiary {
  background-color: var(--secondary-color);
  color: var(--text-main-color);
  border: none;
  padding: 10px 20px;
  font-size: 1em;
}

.page-download__btn-tertiary:hover {
  opacity: 0.8;
  transform: translateY(-2px);
}

.page-download__section-title {
  font-size: 2.5em;
  color: var(--text-main-color);
  text-align: center;
  margin-bottom: 30px;
  padding-top: 40px;
  font-weight: bold;
}

.page-download__text-block {
  font-size: 1.1em;
  color: var(--text-secondary-color);
  text-align: center;
  margin-bottom: 40px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.page-download__why-download-section,
.page-download__how-to-download-section,
.page-download__app-features-section,
.page-download__supported-devices-section,
.page-download__security-section,
.page-download__exclusive-offers-section,
.page-download__faq-section,
.page-download__cta-final-section {
  padding: 60px 0;
  background-color: var(--deep-navy);
}

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

.page-download__feature-item {
  background-color: var(--card-bg-color);
  border-radius: 12px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border-color);
  transition: transform 0.3s ease;
}

.page-download__feature-item:hover {
  transform: translateY(-10px);
}

.page-download__feature-icon {
  width: 100px;
  height: 100px;
  margin-bottom: 20px;
  object-fit: contain;
}

.page-download__feature-title {
  font-size: 1.5em;
  color: var(--text-main-color);
  margin-bottom: 10px;
}

.page-download__feature-description {
  color: var(--text-secondary-color);
  font-size: 0.95em;
}

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

.page-download__step-card {
  background-color: var(--card-bg-color);
  border-radius: 12px;
  padding: 40px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border-color);
  max-width: 500px;
  flex: 1 1 45%;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.page-download__step-title {
  font-size: 2em;
  color: var(--text-main-color);
  margin-bottom: 25px;
  font-weight: bold;
}

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

.page-download__step-list li {
  color: var(--text-secondary-color);
  margin-bottom: 15px;
  font-size: 1.05em;
  display: flex;
  align-items: flex-start;
  line-height: 1.5;
}

.page-download__step-number {
  font-weight: bold;
  color: var(--gold-color);
  margin-right: 10px;
  font-size: 1.1em;
  flex-shrink: 0;
}

.page-download__btn-small {
  padding: 12px 25px;
  font-size: 1em;
  margin-top: 20px;
}

.page-download__qr-code {
  width: 250px;
  height: 250px;
  margin-top: 30px;
  border: 5px solid var(--text-main-color);
  border-radius: 8px;
  object-fit: contain;
}

.page-download__app-features-section ul {
  list-style: none;
  padding: 0;
  max-width: 900px;
  margin: 40px auto 0 auto;
}

.page-download__app-features-section li {
  background-color: var(--card-bg-color);
  border-radius: 10px;
  padding: 20px 30px;
  margin-bottom: 15px;
  display: flex;
  align-items: center;
  gap: 20px;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
  border: 1px solid var(--border-color);
}

.page-download__list-icon {
  font-size: 1.8em;
  color: var(--gold-color);
  flex-shrink: 0;
}

.page-download__list-text {
  color: var(--text-main-color);
  font-size: 1.1em;
}

.page-download__device-info-grid {
  display: flex;
  gap: 30px;
  margin-top: 40px;
  justify-content: center;
  flex-wrap: wrap;
}

.page-download__device-item {
  background-color: var(--card-bg-color);
  border-radius: 12px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border-color);
  flex: 1 1 45%;
  max-width: 45%;
}

.page-download__device-title {
  font-size: 1.8em;
  color: var(--text-main-color);
  margin-bottom: 20px;
}

.page-download__device-specs {
  list-style: none;
  padding: 0;
  text-align: left;
}

.page-download__device-specs li {
  color: var(--text-secondary-color);
  margin-bottom: 10px;
  font-size: 1em;
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-download__compatibility-note {
  margin-top: 30px;
  font-style: italic;
  font-size: 0.95em;
}

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

.page-download__security-item {
  background-color: var(--card-bg-color);
  border-radius: 12px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border-color);
}

.page-download__security-title {
  font-size: 1.6em;
  color: var(--text-main-color);
  margin-bottom: 10px;
}

.page-download__security-description {
  color: var(--text-secondary-color);
  font-size: 0.95em;
}

.page-download__security-image {
  width: 100%;
  height: auto;
  display: block;
  margin-top: 50px;
  border-radius: 12px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
  object-fit: cover;
}

.page-download__offers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-download__offer-card {
  background-color: var(--card-bg-color);
  border-radius: 12px;
  padding: 25px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border-color);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.page-download__offer-image {
  width: 100%;
  height: 250px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 20px;
}

.page-download__offer-title {
  font-size: 1.5em;
  color: var(--text-main-color);
  margin-bottom: 10px;
}

.page-download__offer-description {
  color: var(--text-secondary-color);
  font-size: 0.95em;
  margin-bottom: 20px;
}

.page-download__faq-list {
  max-width: 900px;
  margin: 40px auto 0 auto;
}

.page-download__faq-item {
  background-color: var(--card-bg-color);
  border-radius: 10px;
  margin-bottom: 15px;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
  border: 1px solid var(--border-color);
  overflow: hidden;
}

.page-download__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  font-size: 1.2em;
  color: var(--text-main-color);
  font-weight: bold;
  cursor: pointer;
  list-style: none;
  position: relative;
  user-select: none;
}

.page-download__faq-question::-webkit-details-marker, 
.page-download__faq-question::marker {
  display: none;
}

.page-download__faq-toggle {
  font-size: 1.5em;
  line-height: 1;
  color: var(--gold-color);
  transition: transform 0.3s ease;
}

.page-download__faq-item[open] .page-download__faq-toggle {
  transform: rotate(45deg);
}

.page-download__faq-answer {
  padding: 0 25px 20px 25px;
  color: var(--text-secondary-color);
  font-size: 1em;
  line-height: 1.6;
}

.page-download__cta-final-section {
  text-align: center;
  padding-bottom: 80px;
}

.page-download__btn-large {
  padding: 18px 40px;
  font-size: 1.2em;
  margin-top: 30px;
}

/* General image responsiveness */
.page-download img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* General button responsiveness */
.page-download__cta-button,
.page-download__btn-primary,
.page-download__btn-secondary,
.page-download__btn-tertiary,
.page-download a[class*="button"],
.page-download a[class*="btn"] {
  max-width: 100%;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

.page-download__cta-buttons,
.page-download__button-group,
.page-download__btn-container {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  overflow: hidden;
}

/* Media Queries for Responsiveness */
@media (max-width: 1024px) {
  .page-download__main-title {
    font-size: 2.8em;
  }

  .page-download__description {
    font-size: 1.2em;
  }

  .page-download__section-title {
    font-size: 2.2em;
  }

  .page-download__feature-item {
    padding: 25px;
  }

  .page-download__step-card {
    padding: 30px;
  }

  .page-download__device-item {
    max-width: 100%;
  }
}

@media (max-width: 768px) {
  /* HERO 主图区域 */
  .page-download__hero-section {
    padding-top: 10px !important;
    padding-bottom: 40px;
  }

  .page-download__main-title {
    font-size: 2em !important;
    margin-bottom: 15px;
  }

  .page-download__description {
    font-size: 1em !important;
    margin-bottom: 30px;
    padding: 0 15px;
  }

  .page-download__cta-buttons {
    flex-direction: column;
    gap: 15px;
    padding: 0 15px;
  }

  /* 产品展示图区域 (Not applicable for download page, but general grid structure) */
  .page-download__features-grid,
  .page-download__security-points,
  .page-download__offers-grid {
    grid-template-columns: 1fr !important;
    gap: 20px;
    padding: 0 15px;
  }

  .page-download__download-steps {
    flex-direction: column;
    gap: 30px;
    padding: 0 15px;
  }

  .page-download__step-card {
    max-width: 100% !important;
    flex: 1 1 100% !important;
    padding: 25px;
  }

  .page-download__qr-code {
    width: 200px;
    height: 200px;
  }

  .page-download__device-info-grid {
    flex-direction: column;
    gap: 20px;
    padding: 0 15px;
  }

  .page-download__device-item {
    max-width: 100% !important;
    flex: 1 1 100% !important;
  }

  /* 通用图片与容器 */
  .page-download img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }

  .page-download__section,
  .page-download__card,
  .page-download__container,
  .page-download__text-block,
  .page-download__feature-item,
  .page-download__step-card,
  .page-download__app-features-section li,
  .page-download__device-item,
  .page-download__security-item,
  .page-download__offer-card,
  .page-download__faq-item {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  /* 按钮与按钮容器 */
  .page-download__cta-button,
  .page-download__btn-primary,
  .page-download__btn-secondary,
  .page-download__btn-tertiary,
  .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-left: 15px;
    padding-right: 15px;
  }

  .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;
  }

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

  /* 其他内容模块 */
  .page-download__section-title {
    font-size: 1.8em !important;
    padding-top: 30px;
  }

  .page-download__text-block {
    font-size: 0.95em;
    margin-bottom: 20px;
  }

  .page-download__feature-title,
  .page-download__step-title,
  .page-download__device-title,
  .page-download__security-title,
  .page-download__offer-title {
    font-size: 1.3em !important;
  }

  .page-download__feature-description,
  .page-download__step-list li,
  .page-download__device-specs li,
  .page-download__security-description,
  .page-download__offer-description,
  .page-download__faq-answer {
    font-size: 0.9em !important;
  }

  .page-download__app-features-section li,
  .page-download__faq-question {
    padding: 15px 20px;
    font-size: 1em !important;
  }

  .page-download__list-icon {
    font-size: 1.5em;
  }

  .page-download__list-text {
    font-size: 0.95em;
  }
}