.page-khuyen-mai {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: #333333; /* Default dark text for light body background */
  background-color: #ffffff;
}

.page-khuyen-mai__section {
  padding: 40px 0;
  margin-bottom: 20px;
}

.page-khuyen-mai__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

/* Hero Section */
.page-khuyen-mai__hero-section {
  position: relative;
  padding-top: 10px; /* Small top padding, relying on body padding for header offset */
  margin-bottom: 40px;
  background: linear-gradient(135deg, #26A9E0, #34B7F1);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  overflow: hidden;
}

.page-khuyen-mai__hero-image-wrapper {
  width: 100%;
  max-height: 600px;
  overflow: hidden;
}

.page-khuyen-mai__hero-image {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  object-position: center;
}

.page-khuyen-mai__hero-content {
  position: relative;
  z-index: 10;
  padding: 30px 15px 50px;
  max-width: 900px;
  color: #ffffff;
}

.page-khuyen-mai__main-title {
  font-size: clamp(2.2rem, 4vw, 3.5rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 15px;
  color: #ffffff;
}

.page-khuyen-mai__hero-description {
  font-size: clamp(1rem, 2vw, 1.25rem);
  margin-bottom: 30px;
  line-height: 1.5;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  color: #ffffff;
}

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

/* General Titles and Descriptions */
.page-khuyen-mai__section-title {
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  font-weight: 700;
  text-align: center;
  margin-bottom: 20px;
  color: #26A9E0;
}

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

.page-khuyen-mai__section-description {
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  text-align: center;
  margin-bottom: 40px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  color: #555555;
}

.page-khuyen-mai__section-description--light {
  color: #f0f0f0;
}

.page-khuyen-mai__subtitle {
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  font-weight: 600;
  text-align: center;
  margin-top: 30px;
  margin-bottom: 20px;
  color: #26A9E0;
}

.page-khuyen-mai__subtitle--light {
  color: #ffffff;
}

.page-khuyen-mai__text-block {
  font-size: clamp(0.95rem, 1.2vw, 1.05rem);
  line-height: 1.7;
  margin-bottom: 20px;
  color: #444444;
}

.page-khuyen-mai__text-block--light {
  color: #e0e0e0;
}

.page-khuyen-mai__article-figure {
  margin: 30px auto;
  max-width: 1000px;
  text-align: center;
}

.page-khuyen-mai__image-content {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
  border-radius: 8px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.page-khuyen-mai__image-content--rounded {
    border-radius: 15px;
}

.page-khuyen-mai__image-caption {
  font-size: 0.9rem;
  color: #777777;
  margin-top: 10px;
}

/* Buttons */
.page-khuyen-mai__btn-primary,
.page-khuyen-mai__btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 30px;
  border-radius: 50px;
  font-size: 1.05rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  cursor: pointer;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
  text-align: center;
}

.page-khuyen-mai__btn-primary {
  background-color: #EA7C07; /* Login/Register color */
  color: #ffffff;
  border: 2px solid #EA7C07;
}

.page-khuyen-mai__btn-primary:hover {
  background-color: #d66f06;
  border-color: #d66f06;
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.page-khuyen-mai__btn-secondary {
  background-color: #ffffff;
  color: #26A9E0;
  border: 2px solid #26A9E0;
}

.page-khuyen-mai__btn-secondary:hover {
  background-color: #e0f7fa;
  color: #1a7a9e;
  border-color: #1a7a9e;
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.page-khuyen-mai__btn-center {
    display: block;
    margin: 30px auto 0 auto;
    max-width: 300px;
}

/* Promotions Grid */
.page-khuyen-mai__promotions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-khuyen-mai__card {
  background: #ffffff;
  border-radius: 10px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;
  color: #333333;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-khuyen-mai__card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.page-khuyen-mai__card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
}

.page-khuyen-mai__card-content {
  padding: 25px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.page-khuyen-mai__card-title {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: #26A9E0;
}

.page-khuyen-mai__card-text {
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 20px;
  flex-grow: 1;
}

.page-khuyen-mai__card-btn {
  margin-top: auto;
  font-size: 0.95rem;
  padding: 10px 20px;
  border-radius: 30px;
}

/* Guide Section */
.page-khuyen-mai__guide-section {
  background-color: #26A9E0; /* Brand color as background */
  color: #ffffff;
  padding: 60px 0;
}

.page-khuyen-mai__steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 50px;
  text-align: center;
}

.page-khuyen-mai__step-item {
  background: rgba(255, 255, 255, 0.1);
  padding: 30px;
  border-radius: 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: background 0.3s ease;
}

.page-khuyen-mai__step-item:hover {
  background: rgba(255, 255, 255, 0.2);
}

.page-khuyen-mai__step-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 15px;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: #EA7C07;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.page-khuyen-mai__step-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: #ffffff;
}

.page-khuyen-mai__step-text {
  font-size: 0.95rem;
  color: #f0f0f0;
  line-height: 1.6;
}

/* FAQ Section */
.page-khuyen-mai__faq-section {
  background-color: #f9f9f9;
  padding: 60px 0;
}

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

details.page-khuyen-mai__faq-item {
  margin-bottom: 15px;
  border-radius: 8px;
  border: 1px solid #e0e0e0;
  overflow: hidden;
  background: #fff;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

details.page-khuyen-mai__faq-item summary.page-khuyen-mai__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 25px;
  cursor: pointer;
  user-select: none;
  list-style: none;
  transition: background-color 0.3s ease;
  color: #333333;
}

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

details.page-khuyen-mai__faq-item summary.page-khuyen-mai__faq-question:hover {
  background: #f5f5f5;
}

.page-khuyen-mai__faq-qtext {
  flex: 1;
  font-size: 1.1rem;
  font-weight: 600;
  line-height: 1.5;
  text-align: left;
  color: #26A9E0;
}

.page-khuyen-mai__faq-toggle {
  font-size: 28px;
  font-weight: bold;
  color: #666;
  flex-shrink: 0;
  margin-left: 15px;
  width: 30px;
  text-align: center;
}

details.page-khuyen-mai__faq-item .page-khuyen-mai__faq-answer {
  padding: 0 25px 20px;
  background: #fdfdfd;
  border-radius: 0 0 8px 8px;
  font-size: 1rem;
  color: #555555;
}

.page-khuyen-mai__faq-answer p {
  margin-bottom: 0;
}

/* Bottom CTA Section */
.page-khuyen-mai__cta-bottom-section {
  background: linear-gradient(135deg, #26A9E0, #34B7F1);
  padding: 60px 0;
  text-align: center;
}

.page-khuyen-mai__cta-bottom-container {
    display: flex;
    align-items: center;
    gap: 40px;
    flex-wrap: wrap;
}

.page-khuyen-mai__cta-bottom-container .page-khuyen-mai__image-content {
    flex: 1 1 40%;
    min-width: 300px;
}

.page-khuyen-mai__cta-content {
    flex: 1 1 50%;
    color: #ffffff;
    text-align: left;
}

.page-khuyen-mai__cta-content .page-khuyen-mai__section-title {
    color: #ffffff;
    text-align: left;
}

.page-khuyen-mai__cta-content .page-khuyen-mai__section-description {
    color: #f0f0f0;
    text-align: left;
}

.page-khuyen-mai__cta-buttons--bottom {
  justify-content: flex-start;
  margin-top: 30px;
}


/* Responsive Styles */
@media (max-width: 1024px) {
  .page-khuyen-mai__hero-content {
    padding: 20px 15px 40px;
  }
  .page-khuyen-mai__promotions-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  }
  .page-khuyen-mai__cta-bottom-container {
        flex-direction: column;
        text-align: center;
  }
  .page-khuyen-mai__cta-content {
        text-align: center;
  }
  .page-khuyen-mai__cta-content .page-khuyen-mai__section-title,
  .page-khuyen-mai__cta-content .page-khuyen-mai__section-description {
        text-align: center;
  }
  .page-khuyen-mai__cta-buttons--bottom {
        justify-content: center;
  }
}

@media (max-width: 768px) {
  /* HERO 主图区域 */
  .page-khuyen-mai__hero-section {
    padding-top: 10px !important;
    margin-bottom: 20px;
  }
  .page-khuyen-mai__hero-image-wrapper {
    max-height: 400px;
  }
  .page-khuyen-mai__hero-image {
    object-fit: contain !important; /* Mobile: prevent cropping */
    aspect-ratio: unset !important;
    height: auto !important;
  }
  .page-khuyen-mai__hero-content {
    padding: 20px 10px 30px;
  }
  .page-khuyen-mai__main-title {
    font-size: clamp(1.8rem, 8vw, 2.5rem);
  }
  .page-khuyen-mai__hero-description {
    font-size: clamp(0.9rem, 4vw, 1.1rem);
    margin-bottom: 20px;
  }
  .page-khuyen-mai__cta-buttons {
    flex-direction: column;
    gap: 15px;
  }
  .page-khuyen-mai__btn-primary, .page-khuyen-mai__btn-secondary {
    width: 100% !important;
    max-width: 100% !important;
    padding: 12px 20px;
    font-size: 1rem;
  }
  
  /* General content area padding */
  .page-khuyen-mai__container {
    padding: 0 15px !important;
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }
  
  /* 装饰主标题 + 长文 SEO 区 */
  .page-khuyen-mai__section-title {
    font-size: clamp(1.5rem, 6vw, 2rem);
    margin-bottom: 15px;
  }
  .page-khuyen-mai__section-description {
    font-size: clamp(0.9rem, 3.5vw, 1rem);
    margin-bottom: 25px;
  }
  .page-khuyen-mai__text-block {
    font-size: 0.9rem;
    padding: 0 5px;
  }
  .page-khuyen-mai__article-figure {
    margin: 20px auto;
  }

  /* 通用图片与容器 */
  .page-khuyen-mai img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block;
  }
  .page-khuyen-mai__section,
  .page-khuyen-mai__card,
  .page-khuyen-mai__container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  /* 产品展示图区域 - promotions-grid */
  .page-khuyen-mai__promotions-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .page-khuyen-mai__card {
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.08);
  }
  .page-khuyen-mai__card-image {
    height: 180px;
  }
  .page-khuyen-mai__card-content {
    padding: 20px;
  }
  .page-khuyen-mai__card-title {
    font-size: 1.15rem;
  }
  .page-khuyen-mai__card-text {
    font-size: 0.85rem;
  }
  .page-khuyen-mai__card-btn {
    padding: 10px 15px;
    font-size: 0.9rem;
  }

  /* Guide Section */
  .page-khuyen-mai__guide-section {
    padding: 40px 0;
  }
  .page-khuyen-mai__steps-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .page-khuyen-mai__step-number {
    font-size: 2rem;
    width: 50px;
    height: 50px;
  }
  .page-khuyen-mai__step-title {
    font-size: 1.1rem;
  }
  .page-khuyen-mai__step-text {
    font-size: 0.85rem;
  }

  /* FAQ Section */
  .page-khuyen-mai__faq-section {
    padding: 40px 0;
  }
  details.page-khuyen-mai__faq-item summary.page-khuyen-mai__faq-question {
    padding: 15px 20px;
  }
  .page-khuyen-mai__faq-qtext {
    font-size: 1rem;
  }
  .page-khuyen-mai__faq-toggle {
    font-size: 24px;
    width: 25px;
  }
  details.page-khuyen-mai__faq-item .page-khuyen-mai__faq-answer {
    padding: 0 20px 15px;
    font-size: 0.9rem;
  }

  /* Bottom CTA Section */
  .page-khuyen-mai__cta-bottom-section {
    padding: 40px 0;
  }
  .page-khuyen-mai__cta-bottom-container {
    flex-direction: column;
    gap: 20px;
  }
  .page-khuyen-mai__cta-content {
    text-align: center;
  }
  .page-khuyen-mai__cta-content .page-khuyen-mai__section-title,
  .page-khuyen-mai__cta-content .page-khuyen-mai__section-description {
    text-align: center;
  }
  .page-khuyen-mai__cta-buttons--bottom {
    flex-direction: column;
    gap: 15px;
    margin-top: 20px;
  }
}