.page-download__hero-section {
  padding-top: 10px; /* Small top padding, body handles header offset */
  background-color: #f0f8ff;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding-bottom: 40px;
}
.page-download__hero-image-wrapper {
  width: 100%;
  max-width: 100%;
  overflow: hidden;
  box-sizing: border-box;
  margin-bottom: 20px;
}
.page-download__hero-image {
  max-width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  width: 100%;
  border-radius: 8px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}
.page-download__hero-content {
  max-width: 900px;
  padding: 0 20px;
}
.page-download__hero-title {
  font-size: clamp(2.5rem, 4vw, 3.5rem);
  font-weight: 700;
  color: #26A9E0;
  margin-bottom: 15px;
  line-height: 1.2;
  letter-spacing: -0.02em;
}
.page-download__hero-description {
  font-size: 1.15rem;
  color: #333333;
  line-height: 1.6;
  margin-bottom: 30px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.page-download__cta-buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  width: 100%;
  max-width: 600px;
  margin: 0 auto;
}
.page-download__btn-primary,
.page-download__btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 15px 30px;
  border-radius: 50px;
  font-size: 1.1rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  box-sizing: border-box;
  max-width: 100%;
  white-space: normal;
  word-wrap: break-word;
  min-width: 200px;
}
.page-download__btn-primary {
  background-color: #26A9E0;
  color: #FFFFFF;
  border: 2px solid #26A9E0;
}
.page-download__btn-primary:hover {
  background-color: #1f8ac1;
  border-color: #1f8ac1;
  transform: translateY(-2px);
  box-shadow: 0 4px 10px rgba(38, 169, 224, 0.3);
}
.page-download__btn-secondary {
  background-color: #FFFFFF;
  color: #26A9E0;
  border: 2px solid #26A9E0;
}
.page-download__btn-secondary:hover {
  background-color: #e0f2ff;
  border-color: #1f8ac1;
  transform: translateY(-2px);
  box-shadow: 0 4px 10px rgba(38, 169, 224, 0.2);
}
.page-download__btn-block {
  width: 100%;
  max-width: 300px;
  margin: 10px auto;
}
.page-download__btn-lg {
  min-width: 250px;
  padding: 18px 35px;
  font-size: 1.2rem;
}

.page-download__section {
  padding: 60px 0;
  background-color: #FFFFFF;
  color: #333333;
}
.page-download__dark-section {
  background-color: #26A9E0;
  color: #FFFFFF;
}
.page-download__section-title {
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  font-weight: 700;
  margin-bottom: 30px;
  text-align: center;
  line-height: 1.3;
  color: inherit;
}
.page-download__dark-section .page-download__section-title {
  color: #FFFFFF;
}
.page-download__section-text {
  font-size: 1.1rem;
  line-height: 1.7;
  margin-bottom: 20px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}
.page-download__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  box-sizing: border-box;
}

.page-download__features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}
.page-download__feature-card {
  background-color: rgba(255, 255, 255, 0.1);
  padding: 30px;
  border-radius: 10px;
  text-align: center;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.page-download__feature-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}
.page-download__feature-icon {
  width: 100%;
  max-width: 250px;
  height: auto;
  margin-bottom: 20px;
  border-radius: 8px;
  object-fit: cover;
}
.page-download__feature-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 15px;
  color: #FFFFFF;
}
.page-download__feature-description {
  font-size: 1rem;
  line-height: 1.6;
  color: #e0e0e0;
  flex-grow: 1;
}

.page-download__download-guide-section {
  background-color: #f9f9f9;
}
.page-download__download-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 30px;
  margin-top: 40px;
}
.page-download__step-card {
  background-color: #FFFFFF;
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  height: 100%;
}
.page-download__step-title {
  font-size: 1.8rem;
  font-weight: 700;
  color: #26A9E0;
  margin-bottom: 20px;
}
.page-download__step-image {
  max-width: 100%;
  height: auto;
  display: block;
  margin-bottom: 25px;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}
.page-download__step-list {
  list-style: decimal;
  text-align: left;
  padding-left: 25px;
  margin-bottom: 30px;
  font-size: 1.05rem;
  line-height: 1.7;
  color: #555555;
}
.page-download__step-list li {
  margin-bottom: 10px;
}
.page-download__step-list li strong {
  color: #26A9E0;
}

.page-download__qr-code-section {
  text-align: center;
  margin-top: 60px;
  padding: 40px;
  background-color: #e0f2ff;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}
.page-download__qr-code-title {
  font-size: 1.6rem;
  font-weight: 600;
  color: #26A9E0;
  margin-bottom: 20px;
}
.page-download__qr-code-image {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto 20px auto;
  border: 5px solid #FFFFFF;
  border-radius: 5px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}
.page-download__qr-code-text {
  font-size: 1.05rem;
  color: #555555;
  max-width: 600px;
  margin: 0 auto;
}

.page-download__compatibility-list {
  list-style: none;
  padding: 0;
  margin: 30px auto 0 auto;
  max-width: 800px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.page-download__compatibility-list li {
  background-color: #f0f8ff;
  padding: 20px;
  border-radius: 8px;
  font-size: 1.05rem;
  line-height: 1.6;
  color: #333333;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  border-left: 5px solid #26A9E0;
}
.page-download__compatibility-list li strong {
  color: #26A9E0;
}

.page-download__security-list {
  list-style: none;
  padding: 0;
  margin: 30px auto 0 auto;
  max-width: 900px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 25px;
}
.page-download__security-list li {
  background-color: rgba(255, 255, 255, 0.15);
  padding: 25px;
  border-radius: 10px;
  font-size: 1.05rem;
  line-height: 1.6;
  color: #FFFFFF;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  border-left: 5px solid #FFFFFF;
}
.page-download__security-list li strong {
  color: #FFFFFF;
}

.page-download__promotion-list {
  list-style: disc;
  padding-left: 25px;
  margin: 30px auto 40px auto;
  max-width: 800px;
  font-size: 1.05rem;
  line-height: 1.7;
  color: #555555;
}
.page-download__promotion-list li {
  margin-bottom: 10px;
}
.page-download__promotion-list li strong {
  color: #26A9E0;
}

/* FAQ Styles */
details.page-download__faq-item {
  margin-bottom: 15px;
  border-radius: 5px;
  border: 1px solid #e0e0e0;
  overflow: hidden;
  background: #fff;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}
details.page-download__faq-item summary.page-download__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 20px;
  cursor: pointer;
  user-select: none;
  list-style: none;
  transition: background-color 0.3s ease;
}
details.page-download__faq-item summary.page-download__faq-question::-webkit-details-marker {
  display: none;
}
details.page-download__faq-item summary.page-download__faq-question:hover {
  background: #f5f5f5;
}
.page-download__faq-qtext {
  flex: 1;
  font-size: 1.1rem;
  font-weight: 600;
  line-height: 1.5;
  text-align: left;
  color: #333333;
}
.page-download__faq-toggle {
  font-size: 24px;
  font-weight: bold;
  color: #666;
  flex-shrink: 0;
  margin-left: 15px;
  width: 28px;
  text-align: center;
}
details.page-download__faq-item .page-download__faq-answer {
  padding: 0 20px 20px;
  background: #f9f9f9;
  border-radius: 0 0 5px 5px;
  font-size: 1rem;
  line-height: 1.6;
  color: #555555;
}
details.page-download__faq-item .page-download__faq-answer p {
  margin-bottom: 0;
  color: #555555;
}

.page-download__cta-final-section {
  padding: 80px 0;
  text-align: center;
}
.page-download__cta-final-section .page-download__section-title {
  font-size: clamp(2.2rem, 4vw, 3rem);
  margin-bottom: 25px;
}
.page-download__cta-final-section .page-download__section-text {
  margin-bottom: 40px;
  color: #e0e0e0;
}
.page-download__cta-final-section .page-download__cta-buttons {
  gap: 25px;
}

/* --- Responsive Styles --- */

@media (max-width: 1024px) {
  .page-download__hero-title {
    font-size: clamp(2.2rem, 4.5vw, 3.2rem);
  }
  .page-download__hero-description {
    font-size: 1.05rem;
  }
  .page-download__section-title {
    font-size: clamp(1.8rem, 3.8vw, 2.5rem);
  }
  .page-download__section-text,
  .page-download__feature-description,
  .page-download__step-list,
  .page-download__qr-code-text,
  .page-download__compatibility-list li,
  .page-download__security-list li,
  .page-download__promotion-list li,
  .page-download__faq-qtext,
  details.page-download__faq-item .page-download__faq-answer {
    font-size: 1rem;
  }
  .page-download__btn-primary, .page-download__btn-secondary {
    min-width: 180px;
    padding: 12px 25px;
    font-size: 1rem;
  }
  .page-download__btn-lg {
    min-width: 220px;
    padding: 15px 30px;
    font-size: 1.1rem;
  }
  .page-download__compatibility-list,
  .page-download__security-list {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  /* HERO 主图区域 */
  .page-download__hero-section {
    padding-top: 10px; /* Small top padding for mobile */
    padding-bottom: 30px;
  }
  .page-download__hero-image {
    object-fit: contain !important; /* Prevent cropping */
    aspect-ratio: unset; /* Allow natural aspect ratio */
    width: 100% !important;
    height: auto !important;
  }
  .page-download__hero-title {
    font-size: clamp(1.8rem, 7vw, 2.5rem);
    margin-bottom: 10px;
  }
  .page-download__hero-description {
    font-size: 0.95rem;
    margin-bottom: 20px;
    padding: 0 15px;
  }
  .page-download__cta-buttons {
    flex-direction: column; /* Stack buttons vertically */
    gap: 15px;
    width: calc(100% - 30px) !important;
    padding: 0 15px;
    box-sizing: border-box !important;
  }
  .page-download__btn-primary,
  .page-download__btn-secondary {
    max-width: 100% !important;
    width: 100% !important;
    min-width: unset;
    font-size: 1rem !important;
    padding: 12px 20px !important;
    white-space: normal !important;
    word-wrap: break-word !important;
  }
  .page-download__btn-lg {
    min-width: unset;
    font-size: 1.1rem !important;
    padding: 15px 25px !important;
  }

  /* 通用图片与容器 */
  .page-download img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block;
  }
  .page-download__container,
  .page-download__section,
  .page-download__feature-card,
  .page-download__step-card,
  .page-download__qr-code-section {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }
  .page-download__section {
    padding: 40px 0;
  }
  .page-download__section-title {
    font-size: clamp(1.6rem, 6vw, 2.2rem);
    margin-bottom: 20px;
    padding: 0 10px;
  }
  .page-download__section-text {
    font-size: 0.95rem;
    padding: 0 10px;
    text-align: left;
  }

  /* 产品展示图区域 (Features Grid) */
  .page-download__features-grid {
    grid-template-columns: 1fr; /* Single column for features */
    gap: 20px;
    margin-top: 20px;
  }
  .page-download__feature-card {
    padding: 25px;
  }
  .page-download__feature-title {
    font-size: 1.3rem;
  }
  .page-download__feature-description {
    font-size: 0.9rem;
  }

  /* 下载指南步骤 */
  .page-download__download-steps {
    grid-template-columns: 1fr;
    gap: 20px;
    margin-top: 20px;
  }
  .page-download__step-card {
    padding: 25px;
  }
  .page-download__step-title {
    font-size: 1.5rem;
  }
  .page-download__step-list {
    font-size: 0.9rem;
    padding-left: 20px;
  }
  .page-download__qr-code-section {
    margin-top: 40px;
    padding: 30px 15px;
  }
  .page-download__qr-code-title {
    font-size: 1.4rem;
  }
  .page-download__qr-code-image {
    width: 200px;
    height: 200px;
  }
  .page-download__qr-code-text {
    font-size: 0.9rem;
  }

  /* Tương thích thiết bị */
  .page-download__compatibility-list {
    grid-template-columns: 1fr;
    gap: 15px;
    margin-top: 20px;
  }
  .page-download__compatibility-list li {
    font-size: 0.9rem;
    padding: 15px;
  }

  /* Bảo mật */
  .page-download__security-list {
    grid-template-columns: 1fr;
    gap: 15px;
    margin-top: 20px;
  }
  .page-download__security-list li {
    font-size: 0.9rem;
    padding: 15px;
  }

  /* Khuyến mãi */
  .page-download__promotion-list {
    font-size: 0.9rem;
    margin-top: 20px;
    margin-bottom: 30px;
  }

  /* FAQ */
  details.page-download__faq-item {
    margin-bottom: 10px;
  }
  details.page-download__faq-item summary.page-download__faq-question {
    padding: 15px;
  }
  .page-download__faq-qtext {
    font-size: 1rem;
  }
  .page-download__faq-toggle {
    font-size: 20px;
    width: 24px;
    margin-left: 10px;
  }
  details.page-download__faq-item .page-download__faq-answer {
    padding: 0 15px 15px;
    font-size: 0.9rem;
  }

  /* Final CTA */
  .page-download__cta-final-section {
    padding: 50px 0;
  }
  .page-download__cta-final-section .page-download__section-title {
    font-size: clamp(1.8rem, 7vw, 2.5rem);
  }
  .page-download__cta-final-section .page-download__section-text {
    font-size: 0.95rem;
    padding: 0 15px;
  }
  .page-download__cta-final-section .page-download__cta-buttons {
    gap: 15px;
  }
}