.page-khuyen-mai {
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
  color: #333333;
  background-color: #FFFFFF;
}

.page-khuyen-mai__hero-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 10px 20px 40px;
  background-color: #f5f5f5;
  color: #333333;
  border-bottom: 5px solid #017439;
}

.page-khuyen-mai__hero-image-wrapper {
  width: 100%;
  max-width: 1200px;
  margin-bottom: 20px;
}

.page-khuyen-mai__hero-image {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 10px;
  object-fit: cover;
}

.page-khuyen-mai__hero-content {
  max-width: 800px;
}

.page-khuyen-mai__main-title {
  font-size: clamp(2em, 3.5vw, 3em);
  color: #017439;
  margin-bottom: 15px;
  font-weight: 700;
  line-height: 1.2;
}

.page-khuyen-mai__description {
  font-size: 1.1em;
  margin-bottom: 30px;
  color: #555555;
}

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

.page-khuyen-mai__btn-primary,
.page-khuyen-mai__btn-secondary,
.page-khuyen-mai__card-button {
  display: inline-block;
  padding: 12px 25px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
  max-width: 100%;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
  text-align: center;
}

.page-khuyen-mai__btn-primary {
  background-color: #C30808;
  color: #FFFF00;
  border: 2px solid #C30808;
}

.page-khuyen-mai__btn-primary:hover {
  background-color: #a00606;
  border-color: #a00606;
}

.page-khuyen-mai__btn-secondary {
  background-color: #FFFFFF;
  color: #017439;
  border: 2px solid #017439;
}

.page-khuyen-mai__btn-secondary:hover {
  background-color: #e0e0e0;
  color: #00562c;
  border-color: #00562c;
}

.page-khuyen-mai__promotions-overview,
.page-khuyen-mai__terms-conditions,
.page-khuyen-mai__how-to-get,
.page-khuyen-mai__benefits-section,
.page-khuyen-mai__faq-section,
.page-khuyen-mai__cta-bottom {
  padding: 60px 20px;
  text-align: center;
}

.page-khuyen-mai__section-title {
  font-size: 2.2em;
  color: #017439;
  margin-bottom: 20px;
  font-weight: 700;
}

.page-khuyen-mai__section-description {
  font-size: 1.1em;
  max-width: 900px;
  margin: 0 auto 40px;
  color: #555555;
}

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

.page-khuyen-mai__dark-bg .page-khuyen-mai__section-title,
.page-khuyen-mai__dark-bg .page-khuyen-mai__section-description,
.page-khuyen-mai__dark-bg .page-khuyen-mai__term-title,
.page-khuyen-mai__dark-bg .page-khuyen-mai__term-text,
.page-khuyen-mai__dark-bg .page-khuyen-mai__benefit-title,
.page-khuyen-mai__dark-bg .page-khuyen-mai__benefit-text {
  color: #ffffff;
}

.page-khuyen-mai__light-bg {
  background-color: #ffffff;
  color: #333333;
}

.page-khuyen-mai__card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  max-width: 1200px;
  margin: 0 auto;
}

.page-khuyen-mai__promo-card {
  background-color: #ffffff;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  padding: 25px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  transition: transform 0.3s ease;
}

.page-khuyen-mai__promo-card:hover {
  transform: translateY(-5px);
}

.page-khuyen-mai__card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 20px;
  display: block;
}

.page-khuyen-mai__card-title {
  font-size: 1.5em;
  color: #017439;
  margin-bottom: 15px;
  font-weight: 600;
}

.page-khuyen-mai__card-text {
  font-size: 1em;
  color: #555555;
  margin-bottom: 20px;
  flex-grow: 1;
}

.page-khuyen-mai__card-button {
  background-color: #017439;
  color: #ffffff;
  border: 2px solid #017439;
}

.page-khuyen-mai__card-button:hover {
  background-color: #00562c;
  border-color: #00562c;
}

.page-khuyen-mai__terms-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  max-width: 1200px;
  margin: 0 auto;
  text-align: left;
}

.page-khuyen-mai__term-item {
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  padding: 25px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.page-khuyen-mai__term-title {
  font-size: 1.4em;
  margin-bottom: 10px;
  font-weight: 600;
}

.page-khuyen-mai__term-text {
  font-size: 1em;
  line-height: 1.5;
  opacity: 0.9;
}

.page-khuyen-mai__steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  max-width: 1000px;
  margin: 0 auto;
}

.page-khuyen-mai__step-item {
  background-color: #f9f9f9;
  border-radius: 10px;
  padding: 30px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.page-khuyen-mai__step-icon {
  background-color: #017439;
  color: #ffffff;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 1.8em;
  font-weight: bold;
  margin-bottom: 20px;
}

.page-khuyen-mai__step-title {
  font-size: 1.5em;
  color: #017439;
  margin-bottom: 15px;
  font-weight: 600;
}

.page-khuyen-mai__step-text {
  font-size: 1em;
  color: #555555;
  margin-bottom: 25px;
  flex-grow: 1;
}

.page-khuyen-mai__benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  max-width: 1200px;
  margin: 0 auto;
}

.page-khuyen-mai__benefit-item {
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  padding: 30px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.page-khuyen-mai__benefit-icon {
  width: 100px;
  height: 100px;
  margin-bottom: 20px;
  object-fit: contain;
  display: block;
}

.page-khuyen-mai__benefit-title {
  font-size: 1.4em;
  margin-bottom: 10px;
  font-weight: 600;
  color: #ffffff;
}

.page-khuyen-mai__benefit-text {
  font-size: 1em;
  line-height: 1.5;
  opacity: 0.9;
  color: #ffffff;
}

.page-khuyen-mai__faq-list {
  max-width: 900px;
  margin: 0 auto;
  text-align: left;
}

.page-khuyen-mai__faq-item {
  background-color: #f9f9f9;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  margin-bottom: 15px;
  overflow: hidden;
}

.page-khuyen-mai__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 25px;
  background-color: #017439;
  color: #ffffff;
  cursor: pointer;
  font-weight: bold;
  font-size: 1.1em;
  list-style: none;
  user-select: none;
}

.page-khuyen-mai__faq-question::-webkit-details-marker {
  display: none;
}

.page-khuyen-mai__faq-qtext {
  flex-grow: 1;
  pointer-events: none; /* Ensure clicking summary toggles details */
}

.page-khuyen-mai__faq-toggle {
  font-size: 1.5em;
  line-height: 1;
  margin-left: 15px;
  pointer-events: none; /* Ensure clicking summary toggles details */
}

.page-khuyen-mai__faq-answer {
  padding: 15px 25px 20px;
  background-color: #ffffff;
  color: #555555;
  font-size: 1em;
  line-height: 1.6;
  border-top: 1px solid #e0e0e0;
}

.page-khuyen-mai__faq-item[open] .page-khuyen-mai__faq-question {
  background-color: #00562c; /* Darker green when open */
}

.page-khuyen-mai__cta-bottom {
  padding: 80px 20px;
  background-color: #017439;
  color: #ffffff;
}

.page-khuyen-mai__cta-bottom .page-khuyen-mai__section-title,
.page-khuyen-mai__cta-bottom .page-khuyen-mai__section-description {
  color: #ffffff;
}

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

.page-khuyen-mai__section,
.page-khuyen-mai__card,
.page-khuyen-mai__container {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  overflow: hidden;
}

/* Mobile responsiveness */
@media (max-width: 768px) {
  .page-khuyen-mai {
    font-size: 16px;
    line-height: 1.6;
  }

  .page-khuyen-mai__hero-section {
    padding-top: 10px !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  .page-khuyen-mai__hero-image {
    object-fit: contain !important; /* Ensure image is not cropped */
    height: auto !important;
    max-height: none !important;
    aspect-ratio: unset !important;
  }

  .page-khuyen-mai__main-title {
    font-size: 2em;
  }

  .page-khuyen-mai__description {
    font-size: 1em;
  }

  .page-khuyen-mai__cta-buttons {
    flex-direction: column;
    gap: 15px;
    width: 100%;
  }

  .page-khuyen-mai__btn-primary,
  .page-khuyen-mai__btn-secondary,
  .page-khuyen-mai__card-button {
    width: 100% !important;
    max-width: 100% !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  .page-khuyen-mai__promotions-overview,
  .page-khuyen-mai__terms-conditions,
  .page-khuyen-mai__how-to-get,
  .page-khuyen-mai__benefits-section,
  .page-khuyen-mai__faq-section,
  .page-khuyen-mai__cta-bottom {
    padding: 40px 15px;
  }

  .page-khuyen-mai__section-title {
    font-size: 1.8em;
  }

  .page-khuyen-mai__section-description {
    font-size: 1em;
  }

  .page-khuyen-mai__card-grid,
  .page-khuyen-mai__terms-grid,
  .page-khuyen-mai__steps-grid,
  .page-khuyen-mai__benefits-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .page-khuyen-mai__card-image {
    height: 180px;
  }

  .page-khuyen-mai__promo-card,
  .page-khuyen-mai__term-item,
  .page-khuyen-mai__step-item,
  .page-khuyen-mai__benefit-item {
    padding: 20px;
  }

  .page-khuyen-mai__faq-question {
    padding: 15px 20px;
    font-size: 1em;
  }

  .page-khuyen-mai__faq-answer {
    padding: 10px 20px 15px;
  }

  .page-khuyen-mai img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }
  
  .page-khuyen-mai__section,
  .page-khuyen-mai__card,
  .page-khuyen-mai__container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }
}

/* No specific winner list or game grid for khuyen-mai.html, so skip those specific media queries */