.page-khuyn-mi {
  font-family: 'Arial', sans-serif;
  color: #333333;
  line-height: 1.6;
}

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

.page-khuyn-mi .section-title {
  font-size: 36px;
  color: var(--primary-color);
  text-align: center;
  margin-bottom: 20px;
  font-weight: bold;
  text-transform: uppercase;
}

.page-khuyn-mi .section-description {
  font-size: 18px;
  color: #555555;
  text-align: center;
  margin-bottom: 40px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.page-khuyn-mi .hero-section {
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 60px 20px;
  background: linear-gradient(135deg, #003366, #1a4a7a);
  color: #ffffff;
}

.page-khuyn-mi .hero-container {
  position: relative;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.page-khuyn-mi .hero-image {
  width: 100%;
  margin-bottom: 30px;
}

.page-khuyn-mi .hero-image img {
  width: 100%;
  height: auto;
  max-width: 100%;
  display: block;
  border-radius: 8px;
  object-fit: cover;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

.page-khuyn-mi .hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  width: 100%;
}

.page-khuyn-mi .hero-title {
  font-size: 48px;
  font-weight: bold;
  margin-bottom: 20px;
  color: var(--secondary-color);
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.page-khuyn-mi .hero-description {
  font-size: 22px;
  margin-bottom: 30px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  color: #e0e0e0;
}

.page-khuyn-mi .cta-button {
  display: inline-block;
  padding: 15px 40px;
  background: var(--secondary-color);
  color: var(--primary-color);
  text-decoration: none;
  border-radius: 50px;
  font-size: 20px;
  font-weight: bold;
  margin-top: 20px;
  transition: all 0.3s ease;
  border: 2px solid var(--secondary-color);
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.2);
}

.page-khuyn-mi .cta-button:hover {
  background: #ffc107;
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

.page-khuyn-mi .outline-button {
  background: transparent;
  color: var(--secondary-color);
  border: 2px solid var(--secondary-color);
  margin-left: 20px;
}

.page-khuyn-mi .outline-button:hover {
  background: var(--secondary-color);
  color: var(--primary-color);
}

.page-khuyn-mi .intro-section,
.page-khuyn-mi .how-to-claim,
.page-khuyn-mi .why-choose,
.page-khuyn-mi .faq-section,
.page-khuyn-mi .conclusion-cta {
  padding: 80px 0;
  background-color: #f9f9f9;
}

.page-khuyn-mi .promotion-categories {
  padding: 80px 0;
  background-color: #ffffff;
}

.page-khuyn-mi .terms-conditions {
  padding: 80px 0;
  background-color: #f0f4f8;
}

.page-khuyn-mi .category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.page-khuyn-mi .promo-card {
  background: #ffffff;
  border-radius: 12px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
  overflow: hidden;
  text-align: center;
  padding-bottom: 30px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid #e0e0e0;
}

.page-khuyn-mi .promo-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
}

.page-khuyn-mi .card-image {
  width: 100%;
  height: 250px;
  object-fit: cover;
  margin-bottom: 20px;
  display: block;
}

.page-khuyn-mi .card-title {
  font-size: 24px;
  color: var(--primary-color);
  margin-bottom: 15px;
  padding: 0 20px;
  font-weight: bold;
}

.page-khuyn-mi .card-title a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color 0.3s ease;
}

.page-khuyn-mi .card-title a:hover {
  color: var(--secondary-color);
}

.page-khuyn-mi .card-description {
  font-size: 16px;
  color: #666666;
  padding: 0 20px;
  margin-bottom: 25px;
}

.page-khuyn-mi .card-button {
  display: inline-block;
  padding: 10px 25px;
  background: var(--primary-color);
  color: #ffffff;
  text-decoration: none;
  border-radius: 30px;
  font-size: 16px;
  font-weight: bold;
  transition: all 0.3s ease;
}

.page-khuyn-mi .card-button:hover {
  background: var(--secondary-color);
  color: var(--primary-color);
  transform: translateY(-2px);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.page-khuyn-mi .terms-list {
  list-style-type: disc;
  max-width: 900px;
  margin: 40px auto;
  padding-left: 40px;
  color: #555555;
  font-size: 17px;
}

.page-khuyn-mi .terms-list li {
  margin-bottom: 15px;
}

.page-khuyn-mi .terms-list li strong {
  color: var(--primary-color);
}

.page-khuyn-mi .claim-steps {
  list-style-type: decimal;
  max-width: 800px;
  margin: 40px auto;
  padding-left: 40px;
  color: #555555;
  font-size: 17px;
}

.page-khuyn-mi .claim-steps li {
  margin-bottom: 15px;
}

.page-khuyn-mi .claim-steps li strong {
  color: var(--primary-color);
}

.page-khuyn-mi .claim-steps a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: bold;
}

.page-khuyn-mi .claim-steps a:hover {
  color: var(--secondary-color);
  text-decoration: underline;
}

.page-khuyn-mi .secondary-button {
  background: var(--primary-color);
  color: #ffffff;
  border: 2px solid var(--primary-color);
}

.page-khuyn-mi .secondary-button:hover {
  background: #002244;
  border-color: #002244;
  color: var(--secondary-color);
}

.page-khuyn-mi .advantages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.page-khuyn-mi .advantage-item {
  background: #ffffff;
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
  text-align: center;
  transition: transform 0.3s ease;
  border: 1px solid #e0e0e0;
}

.page-khuyn-mi .advantage-item:hover {
  transform: translateY(-5px);
}

.page-khuyn-mi .advantage-icon {
  width: 100px;
  height: 100px;
  object-fit: contain;
  margin-bottom: 20px;
}

.page-khuyn-mi .advantage-item h3 {
  font-size: 22px;
  color: var(--primary-color);
  margin-bottom: 10px;
}

.page-khuyn-mi .advantage-item p {
  font-size: 16px;
  color: #666666;
}

.page-khuyn-mi .faq-list {
  max-width: 900px;
  margin: 50px auto;
}

.page-khuyn-mi .faq-item {
  margin-bottom: 15px;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  overflow: hidden;
}

.page-khuyn-mi .faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 25px;
  background: #fff;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

.page-khuyn-mi .faq-question:hover {
  background: #f5f5f5;
}

.page-khuyn-mi .faq-question h3 {
  font-size: 18px;
  color: var(--primary-color);
  margin: 0;
  font-weight: bold;
}

.page-khuyn-mi .faq-toggle {
  font-size: 24px;
  font-weight: bold;
  color: var(--secondary-color);
  transition: transform 0.3s ease;
}

.page-khuyn-mi .faq-item.active .faq-toggle {
  transform: rotate(45deg);
  color: var(--primary-color);
}

.page-khuyn-mi .faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease-out, padding 0.4s ease-out;
  padding: 0 25px;
  background: #fdfdfd;
  color: #444444;
}

.page-khuyn-mi .faq-item.active .faq-answer {
  max-height: 500px; /* Đủ cao để chứa nội dung */
  padding: 20px 25px;
  border-top: 1px solid #eeeeee;
}

.page-khuyn-mi .faq-answer p {
  margin: 0;
  font-size: 16px;
}

.page-khuyn-mi .conclusion-cta {
  text-align: center;
  background: linear-gradient(135deg, #003366, #002244);
  color: #ffffff;
  padding: 100px 20px;
}

.page-khuyn-mi .conclusion-cta .section-title {
  color: var(--secondary-color);
  text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.4);
}

.page-khuyn-mi .conclusion-cta .section-description {
  color: #e0e0e0;
  font-size: 20px;
  margin-bottom: 50px;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .page-khuyn-mi .hero-title {
    font-size: 40px;
  }

  .page-khuyn-mi .hero-description {
    font-size: 20px;
  }

  .page-khuyn-mi .section-title {
    font-size: 30px;
  }

  .page-khuyn-mi .section-description {
    font-size: 16px;
  }

  .page-khuyn-mi .category-grid,
  .page-khuyn-mi .advantages-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  }
}

@media (max-width: 768px) {
  .page-khuyn-mi .hero-section {
    padding: 40px 15px;
  }

  .page-khuyn-mi .hero-image {
    margin-bottom: 20px;
  }

  .page-khuyn-mi .hero-image img {
    border-radius: 4px;
  }

  .page-khuyn-mi .hero-title {
    font-size: 32px;
  }

  .page-khuyn-mi .hero-description {
    font-size: 18px;
  }

  .page-khuyn-mi .cta-button {
    padding: 12px 30px;
    font-size: 18px;
    margin-top: 15px;
  }

  .page-khuyn-mi .outline-button {
    margin-left: 0;
    margin-top: 15px;
  }

  .page-khuyn-mi .section-title {
    font-size: 26px;
  }

  .page-khuyn-mi .section-description {
    font-size: 15px;
    margin-bottom: 30px;
  }

  .page-khuyn-mi .promo-card {
    padding-bottom: 20px;
  }

  .page-khuyn-mi .card-image {
    height: 200px;
  }

  .page-khuyn-mi .card-title {
    font-size: 20px;
  }

  .page-khuyn-mi .card-description {
    font-size: 15px;
    margin-bottom: 20px;
  }

  .page-khuyn-mi .terms-list,
  .page-khuyn-mi .claim-steps {
    padding-left: 20px;
    font-size: 15px;
  }

  .page-khuyn-mi .advantage-item h3 {
    font-size: 20px;
  }

  .page-khuyn-mi .advantage-icon {
    width: 80px;
    height: 80px;
  }

  .page-khuyn-mi .faq-question {
    padding: 15px 20px;
  }

  .page-khuyn-mi .faq-question h3 {
    font-size: 16px;
  }

  .page-khuyn-mi .faq-toggle {
    font-size: 20px;
  }

  .page-khuyn-mi .faq-answer {
    padding: 0 20px;
  }

  .page-khuyn-mi .faq-item.active .faq-answer {
    padding: 15px 20px;
  }

  .page-khuyn-mi .conclusion-cta {
    padding: 60px 15px;
  }

  .page-khuyn-mi .conclusion-cta .section-title {
    font-size: 28px;
  }

  .page-khuyn-mi .conclusion-cta .section-description {
    font-size: 16px;
    margin-bottom: 40px;
  }
}

@media (max-width: 480px) {
  .page-khuyn-mi .hero-title {
    font-size: 28px;
  }

  .page-khuyn-mi .hero-description {
    font-size: 16px;
  }

  .page-khuyn-mi .cta-button {
    width: 100%;
    margin-left: 0;
    margin-right: 0;
    display: block;
  }

  .page-khuyn-mi .outline-button {
    margin-top: 10px;
  }

  .page-khuyn-mi .section-title {
    font-size: 22px;
  }

  .page-khuyn-mi .category-grid,
  .page-khuyn-mi .advantages-grid {
    grid-template-columns: 1fr;
  }

  .page-khuyn-mi .promo-card {
    margin-bottom: 20px;
  }

  .page-khuyn-mi .terms-list,
  .page-khuyn-mi .claim-steps {
    padding-left: 15px;
    font-size: 14px;
  }

  .page-khuyn-mi .faq-question h3 {
    font-size: 15px;
  }

  .page-khuyn-mi .faq-toggle {
    font-size: 18px;
  }

  .page-khuyn-mi .faq-answer p {
    font-size: 14px;
  }

  .page-khuyn-mi .conclusion-cta .section-title {
    font-size: 24px;
  }

  .page-khuyn-mi .conclusion-cta .section-description {
    font-size: 15px;
  }
}