.page-khuyen-mai {
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
  color: #FFF3E6; /* Text Main */
  background-color: #0D0E12; /* Background */
}

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

.page-khuyen-mai__article-wrap {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 20px;
}

.page-khuyen-mai__hero-section {
  padding-top: 10px; /* Rely on body for header offset */
  padding-bottom: 60px;
  text-align: center;
  background-color: #FF8C1A; /* Main Color */
  background-image: linear-gradient(180deg, #FF8C1A 0%, #D96800 100%); /* Deep Orange gradient */
  color: #FFF3E6;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.page-khuyen-mai__main-title {
  font-size: clamp(2.2rem, 4vw, 3.5rem);
  font-weight: 700;
  margin-bottom: 20px;
  line-height: 1.2;
  color: #FFF3E6;
}

.page-khuyen-mai__intro-text {
  font-size: 1.1rem;
  margin-bottom: 30px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  color: #FFF3E6;
}

.page-khuyen-mai__cta-buttons {
  display: flex;
  gap: 15px;
  justify-content: center;
  flex-wrap: wrap;
}

.page-khuyen-mai__cta-buttons--center {
  margin-top: 30px;
}

.page-khuyen-mai__btn,
.page-khuyen-mai__card-btn {
  display: inline-block;
  padding: 15px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  transition: background-color 0.3s ease, transform 0.2s ease;
  max-width: 100%;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
  text-align: center;
}

.page-khuyen-mai__btn-primary {
  background: linear-gradient(180deg, #FFA53A 0%, #D96800 100%); /* Button color */
  color: #FFF3E6;
  border: 2px solid transparent;
}

.page-khuyen-mai__btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(255, 165, 58, 0.4);
}

.page-khuyen-mai__btn-secondary {
  background: #17191F; /* Card BG */
  color: #FFB04D; /* Glow */
  border: 2px solid #A84F0C; /* Border */
}

.page-khuyen-mai__btn-secondary:hover {
  transform: translateY(-2px);
  background: #0D0E12;
  box-shadow: 0 4px 15px rgba(255, 176, 77, 0.3);
}

.page-khuyen-mai__section {
  padding: 60px 0;
  color: #FFF3E6;
  background-color: #0D0E12;
}

.page-khuyen-mai__section-title {
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  font-weight: 700;
  text-align: center;
  margin-bottom: 40px;
  color: #FFB04D; /* Glow */
}

.page-khuyen-mai__section-title--light {
  color: #FFF3E6;
}

.page-khuyen-mai__text-block {
  font-size: 1rem;
  margin-bottom: 20px;
  color: #FFF3E6;
}

.page-khuyen-mai__text-block--light {
  color: #FFF3E6;
}

.page-khuyen-mai__intro-benefits .page-khuyen-mai__text-block,
.page-khuyen-mai__intro-benefits .page-khuyen-mai__benefit-list {
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.page-khuyen-mai__benefit-list {
  list-style: none;
  padding: 0;
  margin-bottom: 30px;
}

.page-khuyen-mai__benefit-item {
  background-color: #17191F; /* Card BG */
  border: 1px solid #A84F0C; /* Border */
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 15px;
  font-size: 1rem;
  color: #FFF3E6;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.page-khuyen-mai__benefit-item strong {
  color: #FFB04D; /* Glow */
}

.page-khuyen-mai__promo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 25px;
  margin-top: 30px;
}

.page-khuyen-mai__promo-card {
  background-color: #17191F; /* Card BG */
  border: 1px solid #A84F0C; /* Border */
  border-radius: 12px;
  padding: 25px;
  text-align: center;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  color: #FFF3E6;
}

.page-khuyen-mai__promo-card .page-khuyen-mai__card-title {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 15px;
  color: #FFB04D; /* Glow */
}

.page-khuyen-mai__promo-card .page-khuyen-mai__card-description {
  font-size: 0.95rem;
  line-height: 1.5;
  margin-bottom: 20px;
  flex-grow: 1;
  color: #FFF3E6;
}

.page-khuyen-mai__promo-item {
  background-color: #17191F; /* Card BG */
  border: 1px solid #A84F0C; /* Border */
  border-radius: 12px;
  padding: 30px;
  margin-bottom: 30px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
  color: #FFF3E6;
}

.page-khuyen-mai__item-title {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 15px;
  color: #FFB04D; /* Glow */
}

.page-khuyen-mai__item-description {
  font-size: 1rem;
  margin-bottom: 15px;
  color: #FFF3E6;
}

.page-khuyen-mai__item-details {
  list-style: disc;
  margin-left: 25px;
  margin-bottom: 25px;
  color: #FFF3E6;
}

.page-khuyen-mai__item-details li {
  margin-bottom: 8px;
  font-size: 0.95rem;
}

.page-khuyen-mai__item-details li strong {
  color: #FFA53A; /* Accent Color */
}

.page-khuyen-mai__how-to-claim .page-khuyen-mai__text-block {
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.page-khuyen-mai__steps-list {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-khuyen-mai__step-item {
  background-color: #17191F; /* Card BG */
  border: 1px solid #A84F0C; /* Border */
  border-radius: 12px;
  padding: 25px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  text-align: center;
  color: #FFF3E6;
}

.page-khuyen-mai__step-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: #FFA53A; /* Accent Color */
}

.page-khuyen-mai__step-description {
  font-size: 0.95rem;
  color: #FFF3E6;
}

.page-khuyen-mai__terms-overview {
  background-color: #0D0E12;
}

.page-khuyen-mai__terms-list {
  list-style: disc;
  margin-left: 25px;
  margin-bottom: 30px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  color: #FFF3E6;
}

.page-khuyen-mai__terms-item {
  margin-bottom: 10px;
  font-size: 1rem;
}

.page-khuyen-mai__terms-item strong {
  color: #FFB04D;
}

.page-khuyen-mai__faq-section {
  background-color: #0D0E12;
  padding-bottom: 60px;
}

.page-khuyen-mai__faq-list {
  max-width: 800px;
  margin: 30px auto 0;
}

.page-khuyen-mai__faq-item {
  background-color: #17191F; /* Card BG */
  border: 1px solid #A84F0C; /* Border */
  border-radius: 8px;
  margin-bottom: 15px;
  overflow: hidden;
  color: #FFF3E6;
}

.page-khuyen-mai__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 25px;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  color: #FFB04D; /* Glow */
  background-color: #17191F;
  user-select: none;
  list-style: none; /* Hide default marker */
}

.page-khuyen-mai__faq-question::-webkit-details-marker, /* Hide default marker for Webkit */
.page-khuyen-mai__faq-question::marker {
  display: none;
}

.page-khuyen-mai__faq-toggle {
  font-size: 1.5rem;
  line-height: 1;
  transition: transform 0.3s ease;
}

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

.page-khuyen-mai__faq-answer {
  padding: 0 25px 20px;
  font-size: 0.95rem;
  line-height: 1.6;
  color: #FFF3E6;
}

.page-khuyen-mai__cta-final {
  padding: 80px 0;
  text-align: center;
  background-color: #FF8C1A; /* Main Color */
  background-image: linear-gradient(180deg, #FF8C1A 0%, #D96800 100%); /* Deep Orange gradient */
  color: #FFF3E6;
}

.page-khuyen-mai__cta-final .page-khuyen-mai__section-title {
  color: #FFF3E6;
  margin-bottom: 25px;
}

.page-khuyen-mai__cta-final .page-khuyen-mai__text-block {
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 30px;
  font-size: 1.1rem;
  color: #FFF3E6;
}

.page-khuyen-mai__image-figure {
  margin: 40px auto;
  text-align: center;
  max-width: 100%;
}

.page-khuyen-mai__image {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
  border-radius: 8px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.page-khuyen-mai__image-caption {
  font-size: 0.9rem;
  color: #FFF3E6;
  margin-top: 10px;
  text-align: center;
}

/* --- Mobile Responsive Styles (max-width: 768px) --- */
@media (max-width: 768px) {
  .page-khuyen-mai {
    font-size: 15px;
    line-height: 1.5;
  }

  .page-khuyen-mai__container,
  .page-khuyen-mai__article-wrap {
    padding-left: 15px !important;
    padding-right: 15px !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .page-khuyen-mai__hero-section {
    padding-top: 10px !important; /* Fixed header offset handled by body, this is for internal spacing */
    padding-bottom: 40px;
  }

  .page-khuyen-mai__main-title {
    font-size: 2rem;
    margin-bottom: 15px;
  }

  .page-khuyen-mai__intro-text {
    font-size: 1rem;
    margin-bottom: 25px;
  }

  .page-khuyen-mai__cta-buttons {
    flex-direction: column;
    gap: 10px;
  }

  .page-khuyen-mai__btn,
  .page-khuyen-mai__card-btn {
    padding: 12px 20px;
    font-size: 0.95rem;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
  }

  .page-khuyen-mai__section {
    padding: 40px 0;
  }

  .page-khuyen-mai__section-title {
    font-size: 2rem;
    margin-bottom: 30px;
  }

  .page-khuyen-mai__text-block {
    font-size: 0.95rem;
  }

  .page-khuyen-mai__benefit-item {
    padding: 15px;
    font-size: 0.9rem;
  }

  .page-khuyen-mai__promo-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .page-khuyen-mai__promo-card .page-khuyen-mai__card-title {
    font-size: 1.2rem;
  }

  .page-khuyen-mai__promo-card .page-khuyen-mai__card-description {
    font-size: 0.9rem;
  }

  .page-khuyen-mai__promo-item {
    padding: 20px;
  }

  .page-khuyen-mai__item-title {
    font-size: 1.4rem;
  }

  .page-khuyen-mai__item-description,
  .page-khuyen-mai__item-details li {
    font-size: 0.9rem;
  }

  .page-khuyen-mai__steps-list {
    grid-template-columns: 1fr;
    gap: 20px;
    margin-top: 30px;
  }

  .page-khuyen-mai__step-title {
    font-size: 1.1rem;
  }

  .page-khuyen-mai__step-description {
    font-size: 0.9rem;
  }

  .page-khuyen-mai__terms-list {
    margin-left: 20px;
    font-size: 0.9rem;
  }

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

  .page-khuyen-mai__faq-answer {
    padding: 0 20px 15px;
    font-size: 0.9rem;
  }

  .page-khuyen-mai__cta-final {
    padding: 50px 0;
  }

  .page-khuyen-mai__cta-final .page-khuyen-mai__section-title {
    font-size: 2rem;
  }

  .page-khuyen-mai__cta-final .page-khuyen-mai__text-block {
    font-size: 1rem;
  }

  /* General image responsiveness */
  .page-khuyen-mai img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    box-sizing: border-box !important;
  }
  .page-khuyen-mai__image-figure {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }
}