.page-khuyen-mai {
  font-family: Arial, sans-serif;
  color: #333333;
  background-color: #F5F7FA;
  line-height: 1.6;
}

.page-khuyen-mai__hero-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding-top: 10px; /* Small top padding as body handles header offset */
  padding-bottom: 40px;
  background-color: #ffffff;
  position: relative;
  overflow: hidden;
}

.page-khuyen-mai__hero-image-wrapper {
  width: 100%;
  max-width: 100%;
  overflow: hidden;
  box-sizing: border-box;
}

.page-khuyen-mai__hero-image {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover; /* Desktop: cover to fill space */
  max-height: 600px;
}

.page-khuyen-mai__hero-content {
  max-width: 900px;
  margin-top: 20px;
  padding: 0 15px;
}

.page-khuyen-mai__hero-title {
  font-size: clamp(2.2em, 4vw, 3.2em);
  font-weight: 700;
  color: #E53935;
  margin-bottom: 15px;
  line-height: 1.2;
}

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

.page-khuyen-mai__hero-cta-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
  width: 100%;
  max-width: 600px;
  margin: 0 auto;
}

.page-khuyen-mai__btn-primary,
.page-khuyen-mai__btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  border-radius: 8px;
  font-size: 1.1em;
  font-weight: 700;
  text-decoration: none;
  transition: all 0.3s ease;
  white-space: normal;
  word-wrap: break-word;
  box-sizing: border-box;
  flex-grow: 1;
  max-width: 250px;
}

.page-khuyen-mai__btn-primary {
  background: linear-gradient(180deg, #FF5A4F 0%, #E53935 100%);
  color: #ffffff;
  border: none;
  box-shadow: 0 4px 15px rgba(229, 57, 53, 0.3);
}

.page-khuyen-mai__btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-2px);
}

.page-khuyen-mai__btn-secondary {
  background: #ffffff;
  color: #E53935;
  border: 2px solid #E53935;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.page-khuyen-mai__btn-secondary:hover {
  background-color: #f0f0f0;
  transform: translateY(-2px);
}

.page-khuyen-mai__section-title {
  font-size: clamp(1.8em, 3.5vw, 2.8em);
  font-weight: 700;
  color: #E53935;
  text-align: center;
  margin-bottom: 20px;
  padding: 0 15px;
}

.page-khuyen-mai__section-description {
  font-size: 1.05em;
  color: #555555;
  text-align: center;
  max-width: 900px;
  margin: 0 auto 40px auto;
  padding: 0 15px;
}