.page-download {
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
  color: #ffffff; /* Default text color for dark body background */
  background-color: #121212; /* Inherited from body, ensuring consistency */
}

.page-download__hero-section {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  padding-top: var(--header-offset, 120px); /* Ensure spacing from fixed header */
  text-align: center;
  background-color: #017439;
  color: #ffffff;
  overflow: hidden;
}

.page-download__hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
  margin-bottom: 40px;
}

.page-download__hero-title {
  font-size: 3.2em;
  margin-bottom: 20px;
  color: #ffffff;
  line-height: 1.2;
}

.page-download__hero-description {
  font-size: 1.2em;
  margin-bottom: 30px;
}

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

.page-download__btn-primary {
  background-color: #017439;
  color: #ffffff;
  padding: 15px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  transition: background-color 0.3s ease, transform 0.2s ease;
  border: 2px solid #017439;
}

.page-download__btn-primary:hover {
  background-color: #005a2c;
  transform: translateY(-2px);
}

.page-download__btn-secondary {
  background-color: #ffffff;
  color: #017439;
  padding: 15px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  transition: background-color 0.3s ease, transform 0.2s ease, color 0.3s ease;
  border: 2px solid #ffffff;
}

.page-download__btn-secondary:hover {
  background-color: #f0f0f0;
  color: #005a2c;
  transform: translateY(-2px);
}

/* Specific button colors for login/register, ensuring contrast */
.page-download__btn-download {
  background-color: #C30808; /* Custom 'Đăng ký' color */
  color: #FFFFFF; /* Forced to white for WCAG AA contrast with #C30808 */
  border-color: #C30808;
}

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

.page-download__hero-image-wrapper {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  opacity: 0.15;
}

.page-download__hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-download__section {
  padding: 80px 20px;
  background-color: #1a1a1a;
  color: #ffffff;
}

.page-download__dark-bg {
  background-color: #017439;
  color: #ffffff;
}

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

.page-download__section-title {
  font-size: 2.5em;
  color: #ffffff;
  text-align: center;
  margin-bottom: 40px;
}

.page-download__text-block {
  font-size: 1.1em;
  margin-bottom: 20px;
  line-height: 1.8;
  color: #f0f0f0;
}

.page-download__image-and-steps {
  display: flex;
  align-items: center;
  gap: 40px;
  margin-top: 50px;
  flex-wrap: wrap;
}

.page-download__image-and-steps--reverse {
  flex-direction: row-reverse;
}

.page-download__image-and-steps > div {
  flex: 1;
  min-width: 300px;
}

.page-download__steps-title {
  font-size: 1.8em;
  color: #ffffff;
  margin-bottom: 20px;
}

.page-download__ordered-list {
  list-style-type: decimal;
  margin-left: 20px;
  margin-bottom: 30px;
  color: #f0f0f0;
}

.page-download__ordered-list li {
  margin-bottom: 10px;
  font-size: 1.1em;
}

.page-download__list-strong {
  color: #ffffff;
}

.page-download__image-wrapper {
  text-align: center;
}

.page-download__content-image {
  max-width: 100%;
  height: auto;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
  display: block; /* Ensure it behaves as a block element */
  margin: 0 auto; /* Center the image */
  min-width: 200px; /* Enforce minimum size */
  min-height: 200px; /* Enforce minimum size */
}

.page-download__btn-inline {
  display: inline-block;
  margin-top: 20px;
}

.page-download__benefits-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  list-style: none;
  padding: 0;
  margin-top: 40px;
}

.page-download__benefits-item {
  background-color: #2a2a2a;
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
  text-align: center;
}

.page-download__benefits-heading {
  font-size: 1.5em;
  color: #017439;
  margin-bottom: 15px;
}

.page-download__benefits-text {
  color: #e0e0e0;
}

.page-download__benefits-image {
  margin-top: 60px;
}

.page-download__comparison-table-wrapper {
  overflow-x: auto;
  margin-top: 40px;
  margin-bottom: 40px;
}

.page-download__comparison-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 600px; /* Ensure table is wide enough for comparison */
}

.page-download__comparison-table th,
.page-download__comparison-table td {
  border: 1px solid #333333;
  padding: 15px;
  text-align: left;
  color: #f0f0f0;
}

.page-download__comparison-table th {
  background-color: #005a2c;
  font-weight: bold;
  color: #ffffff;
}

.page-download__comparison-table tr:nth-child(even) {
  background-color: #1f1f1f;
}

.page-download__comparison-table tr:hover {
  background-color: #2a2a2a;
}

.page-download__faq-list {
  margin-top: 40px;
}

.page-download__faq-item {
  background-color: #2a2a2a;
  border-radius: 10px;
  margin-bottom: 15px;
  overflow: hidden;
}

.page-download__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  font-size: 1.2em;
  font-weight: bold;
  color: #ffffff;
  cursor: pointer;
  background-color: #017439;
  border-bottom: 1px solid #005a2c;
  list-style: none; /* For details/summary */
}

.page-download__faq-question::-webkit-details-marker {
  display: none; /* For details/summary */
}

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

.page-download__faq-toggle {
  font-size: 1.5em;
  line-height: 1;
  margin-left: 20px;
  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;
  font-size: 1.1em;
  color: #e0e0e0;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out, padding 0.3s ease-out;
}

.page-download__faq-item[open] .page-download__faq-answer {
  max-height: 500px; /* Adjust as needed */
  padding-top: 15px;
}

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

.page-download__cta-buttons {
  display: flex;
  justify-content: center;
  gap: 25px;
  margin-top: 40px;
  flex-wrap: wrap;
}

.page-download__btn-large {
  padding: 18px 35px;
  font-size: 1.1em;
}

.page-download__cta-image {
  margin-top: 60px;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .page-download__hero-title {
    font-size: 2.8em;
  }
  .page-download__section-title {
    font-size: 2em;
  }
  .page-download__image-and-steps {
    flex-direction: column;
  }
  .page-download__image-and-steps--reverse {
    flex-direction: column;
  }
}

@media (max-width: 768px) {
  .page-download__hero-section {
    padding: 40px 15px;
    padding-top: var(--header-offset, 120px) !important; /* Ensure spacing from fixed header on mobile */
  }
  .page-download__hero-title {
    font-size: 2.2em;
  }
  .page-download__hero-description {
    font-size: 1em;
  }
  .page-download__hero-buttons {
    flex-direction: column;
    gap: 15px;
  }
  .page-download__btn-primary,
  .page-download__btn-secondary,
  .page-download__btn-large {
    width: 100% !important;
    max-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__section {
    padding: 50px 15px;
  }
  .page-download__container {
    padding: 0 15px;
  }
  .page-download__section-title {
    font-size: 1.8em;
  }
  .page-download__text-block {
    font-size: 0.95em;
  }
  .page-download__steps-title {
    font-size: 1.5em;
  }
  .page-download__ordered-list li {
    font-size: 0.95em;
  }
  .page-download__benefits-list {
    grid-template-columns: 1fr;
  }
  .page-download__faq-question {
    font-size: 1.1em;
    padding: 15px 20px;
  }
  .page-download__faq-answer {
    font-size: 1em;
    padding: 0 20px 15px;
  }
  .page-download img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
    min-width: 200px !important;
    min-height: 200px !important;
  }
  .page-download__section,
  .page-download__card,
  .page-download__container,
  .page-download__image-wrapper,
  .page-download__video-section,
  .page-download__video-container,
  .page-download__video-wrapper,
  .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;
    overflow: hidden !important;
  }
  .page-download video,
  .page-download__video {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }
}

/* Ensure no image filters */
.page-download img {
  filter: none;
}

/* Content area image CSS dimensions lower bound */
.page-download img {
  min-width: 200px;
  min-height: 200px;
}

/* Ensure CSS width/height don't conflict with HTML attributes */
.page-download__hero-image { width: 100%; height: 100%; }
.page-download__content-image { width: 100%; height: auto; }