:root {
  --primary-color: #0A2239;
  --secondary-color: #FFD700;
  --text-color-light: #ffffff;
  --text-color-dark: #333333;
  --background-dark: #121212;
  --card-background-dark: rgba(255, 255, 255, 0.08);
  --border-color-dark: rgba(255, 255, 255, 0.15);
}

.page-promotions {
  color: var(--text-color-light); /* Main text color for dark body background */
  background-color: var(--background-dark);
  line-height: 1.6;
  font-family: 'Arial', sans-serif;
  padding-top: 10px; /* Default for desktop to clear fixed header */
}

.page-promotions__hero-section {
  padding: 80px 20px;
  text-align: center;
  background: linear-gradient(135deg, var(--primary-color) 0%, #061524 100%);
  border-bottom: 2px solid var(--secondary-color);
  padding-top: 10px; /* Ensure content is not hidden by fixed header */
}

.page-promotions__hero-container {
  max-width: 1200px;
  margin: 0 auto;
}

.page-promotions__hero-title {
  font-size: 3.2em;
  color: var(--secondary-color);
  margin-bottom: 20px;
  font-weight: 700;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.page-promotions__hero-description {
  font-size: 1.2em;
  color: var(--text-color-light);
  max-width: 800px;
  margin: 0 auto 40px auto;
  opacity: 0.9;
}

.page-promotions__hero-cta {
  margin-top: 30px;
}

.page-promotions__cta-button {
  display: inline-block;
  padding: 15px 40px;
  background: var(--secondary-color);
  color: var(--primary-color);
  text-decoration: none;
  border-radius: 8px;
  font-size: 1.1em;
  font-weight: bold;
  text-align: center;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  border: none;
  cursor: pointer;
}

.page-promotions__cta-button:hover {
  background: darken(var(--secondary-color), 10%);
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.page-promotions__listing-section {
  padding: 60px 20px;
  text-align: center;
}

.page-promotions__listing-container {
  max-width: 1200px;
  margin: 0 auto;
}

.page-promotions__listing-title {
  font-size: 2.8em;
  color: var(--secondary-color);
  margin-bottom: 20px;
  font-weight: 700;
}

.page-promotions__listing-intro-text {
  font-size: 1.1em;
  color: var(--text-color-light);
  max-width: 900px;
  margin: 0 auto 50px auto;
  opacity: 0.85;
}

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

.page-promotions__promotion-card {
  background: var(--card-background-dark);
  border: 1px solid var(--border-color-dark);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.page-promotions__promotion-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.4);
}

.page-promotions__promotion-image {
  width: 100%;
  height: 220px;
  object-fit: cover;
  display: block;
  border-bottom: 1px solid var(--border-color-dark);
}

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

.page-promotions__promotion-card-title {
  font-size: 1.6em;
  color: var(--secondary-color);
  margin-bottom: 15px;
  font-weight: 600;
}

.page-promotions__promotion-card-description {
  font-size: 0.95em;
  color: var(--text-color-light);
  margin-bottom: 20px;
  line-height: 1.7;
  opacity: 0.85;
  flex-grow: 1;
}

.page-promotions__promotion-card-button {
  display: inline-block;
  padding: 12px 25px;
  background: var(--primary-color);
  color: var(--secondary-color);
  text-decoration: none;
  border-radius: 6px;
  font-size: 1em;
  font-weight: bold;
  text-align: center;
  transition: all 0.3s ease;
  border: 1px solid var(--secondary-color);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.page-promotions__promotion-card-button:hover {
  background: var(--secondary-color);
  color: var(--primary-color);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.page-promotions__why-choose-section {
  padding: 60px 20px;
  background: linear-gradient(135deg, #061524 0%, var(--primary-color) 100%);
  border-top: 2px solid var(--secondary-color);
  border-bottom: 2px solid var(--secondary-color);
  text-align: center;
}

.page-promotions__why-choose-container {
  max-width: 1200px;
  margin: 0 auto;
}

.page-promotions__why-choose-title {
  font-size: 2.8em;
  color: var(--secondary-color);
  margin-bottom: 20px;
  font-weight: 700;
}

.page-promotions__why-choose-intro {
  font-size: 1.1em;
  color: var(--text-color-light);
  max-width: 900px;
  margin: 0 auto 50px auto;
  opacity: 0.85;
}

.page-promotions__benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  text-align: left;
}

.page-promotions__benefit-item {
  background: var(--card-background-dark);
  border: 1px solid var(--border-color-dark);
  border-radius: 10px;
  padding: 30px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-promotions__benefit-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.page-promotions__benefit-title {
  font-size: 1.5em;
  color: var(--secondary-color);
  margin-bottom: 15px;
  font-weight: 600;
}

.page-promotions__benefit-description {
  font-size: 0.95em;
  color: var(--text-color-light);
  opacity: 0.85;
}

.page-promotions__faq-section {
  padding: 60px 20px;
}

.page-promotions__faq-container {
  max-width: 1000px;
  margin: 0 auto;
}

.page-promotions__faq-main-title {
  font-size: 2.8em;
  color: var(--secondary-color);
  margin-bottom: 40px;
  text-align: center;
  font-weight: 700;
}

/* FAQ容器样式 */
.page-promotions__faq-item {
  margin-bottom: 15px;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--border-color-dark);
  background: var(--card-background-dark);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

/* FAQ默认状态 - 答案隐藏 */
.page-promotions__faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
  padding: 0 25px;
  opacity: 0;
  color: var(--text-color-light);
}

/* FAQ展开状态 - 🚨 使用!important和足够大的max-height确保一定能展开 */
.page-promotions__faq-item.active .page-promotions__faq-answer {
  max-height: 2000px !important; /* 🚨 Sử dụng !important để đảm bảo ưu tiên, giá trị đủ lớn */
  padding: 20px 25px !important;
  opacity: 1;
  background: rgba(255, 255, 255, 0.05);
  border-top: 1px solid var(--border-color-dark);
}

/* 问题样式 */
.page-promotions__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  cursor: pointer;
  user-select: none;
  transition: background-color 0.3s ease, border-color 0.3s ease;
  position: relative;
}

.page-promotions__faq-question:hover {
  background: rgba(255, 255, 255, 0.15);
}

.page-promotions__faq-question:active {
  background: rgba(255, 255, 255, 0.2);
}

/* 问题标题样式 */
.page-promotions__faq-question h3 {
  margin: 0;
  padding: 0;
  flex: 1;
  font-size: 1.2em;
  font-weight: 600;
  line-height: 1.5;
  color: var(--secondary-color);
  pointer-events: none; /* 防止h3标签阻止点击事件 */
}

/* 切换图标 */
.page-promotions__faq-toggle {
  font-size: 28px;
  font-weight: bold;
  line-height: 1;
  color: var(--secondary-color);
  transition: transform 0.3s ease, color 0.3s ease;
  flex-shrink: 0;
  margin-left: 20px;
  pointer-events: none; /* 防止图标阻止点击事件 */
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid var(--secondary-color);
}

.page-promotions__faq-item.active .page-promotions__faq-toggle {
  transform: rotate(45deg);
  color: var(--primary-color);
  background: var(--secondary-color);
}

.page-promotions__faq-answer p {
  margin: 0;
  font-size: 0.95em;
  opacity: 0.85;
}

.page-promotions__cta-bottom-section {
  padding: 80px 20px;
  text-align: center;
  background: linear-gradient(135deg, var(--primary-color) 0%, #061524 100%);
  border-top: 2px solid var(--secondary-color);
}

.page-promotions__cta-bottom-container {
  max-width: 900px;
  margin: 0 auto;
}

.page-promotions__cta-bottom-title {
  font-size: 2.8em;
  color: var(--secondary-color);
  margin-bottom: 20px;
  font-weight: 700;
}

.page-promotions__cta-bottom-description {
  font-size: 1.2em;
  color: var(--text-color-light);
  max-width: 700px;
  margin: 0 auto 40px auto;
  opacity: 0.9;
}

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

.page-promotions__cta-button--primary {
  background: var(--secondary-color);
  color: var(--primary-color);
  border: 2px solid var(--secondary-color);
}

.page-promotions__cta-button--primary:hover {
  background: darken(var(--secondary-color), 10%);
  color: var(--primary-color);
}

.page-promotions__cta-button--secondary {
  background: transparent;
  color: var(--secondary-color);
  border: 2px solid var(--secondary-color);
}

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

/* Responsive Design */
@media (max-width: 1024px) {
  .page-promotions__hero-title {
    font-size: 2.8em;
  }
  .page-promotions__listing-title,
  .page-promotions__why-choose-title,
  .page-promotions__faq-main-title,
  .page-promotions__cta-bottom-title {
    font-size: 2.4em;
  }
  .page-promotions__promotion-card-title {
    font-size: 1.4em;
  }
  .page-promotions__benefit-title {
    font-size: 1.3em;
  }
}

@media (max-width: 768px) {
  .page-promotions {
    padding-top: 10px !important; /* Adjust for mobile fixed header */
  }
  .page-promotions__hero-section,
  .page-promotions__listing-section,
  .page-promotions__why-choose-section,
  .page-promotions__faq-section,
  .page-promotions__cta-bottom-section {
    padding: 40px 15px;
  }

  .page-promotions__hero-title {
    font-size: 2.2em;
  }
  .page-promotions__hero-description {
    font-size: 1em;
  }
  .page-promotions__cta-button {
    padding: 12px 30px;
    font-size: 1em;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
  }
  .page-promotions__cta-bottom-buttons {
    flex-direction: column;
    gap: 15px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 0;
    padding-right: 0;
  }

  .page-promotions__listing-title,
  .page-promotions__why-choose-title,
  .page-promotions__faq-main-title,
  .page-promotions__cta-bottom-title {
    font-size: 2em;
  }

  .page-promotions__promotion-grid {
    grid-template-columns: 1fr;
  }
  .page-promotions__promotion-image {
    height: 180px;
  }
  .page-promotions__promotion-card-title {
    font-size: 1.3em;
  }
  .page-promotions__promotion-card-description {
    font-size: 0.9em;
  }
  .page-promotions__promotion-card-button {
    font-size: 0.95em;
    padding: 10px 20px;
  }

  .page-promotions__benefits-grid {
    grid-template-columns: 1fr;
  }
  .page-promotions__benefit-item {
    padding: 25px;
  }
  .page-promotions__benefit-title {
    font-size: 1.4em;
  }

  .page-promotions__faq-question {
    padding: 18px 20px;
  }
  .page-promotions__faq-question h3 {
    font-size: 1.1em;
  }
  .page-promotions__faq-toggle {
    font-size: 24px;
    width: 28px;
    height: 28px;
  }
  .page-promotions__faq-answer {
    padding: 0 20px;
  }
  .page-promotions__faq-item.active .page-promotions__faq-answer {
    padding: 15px 20px !important;
  }
  .page-promotions__faq-answer p {
    font-size: 0.9em;
  }

  .page-promotions__cta-bottom-description {
    font-size: 1em;
  }
}

@media (max-width: 480px) {
  .page-promotions__hero-title {
    font-size: 1.8em;
  }
  .page-promotions__listing-title,
  .page-promotions__why-choose-title,
  .page-promotions__faq-main-title,
  .page-promotions__cta-bottom-title {
    font-size: 1.6em;
  }
  .page-promotions__promotion-image {
    height: 150px;
  }
  .page-promotions__promotion-card-title {
    font-size: 1.2em;
  }
  .page-promotions__benefit-title {
    font-size: 1.2em;
  }
  .page-promotions__faq-question h3 {
    font-size: 1em;
  }
  .page-promotions__faq-toggle {
    font-size: 20px;
    width: 24px;
    height: 24px;
  }
}

/* Ensure all images are responsive */
.page-promotions img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Ensure all image containers are responsive */
.page-promotions__promotion-card,
.page-promotions__benefit-item {
  max-width: 100%;
  width: 100%;
  box-sizing: border-box;
  overflow: hidden;
}

@media (max-width: 768px) {
  .page-promotions img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }
  .page-promotions__hero-container,
  .page-promotions__listing-container,
  .page-promotions__why-choose-container,
  .page-promotions__faq-container,
  .page-promotions__cta-bottom-container,
  .page-promotions__promotion-grid,
  .page-promotions__benefits-grid,
  .page-promotions__faq-list {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 0;
    padding-right: 0;
    overflow: hidden !important;
  }
  .page-promotions__promotion-card,
  .page-promotions__benefit-item {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    margin-left: auto;
    margin-right: auto;
  }
  .page-promotions__hero-section,
  .page-promotions__listing-section,
  .page-promotions__why-choose-section,
  .page-promotions__faq-section,
  .page-promotions__cta-bottom-section {
    padding-left: 15px;
    padding-right: 15px;
    box-sizing: border-box;
  }
  .page-promotions__cta-button,
  .page-promotions__promotion-card-button {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
  }
}