.page-khuyen-mai {
  font-family: 'Arial', sans-serif;
  color: #333333;
  background-color: #FFFFFF;
}

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

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

.page-khuyen-mai__main-title {
  font-size: 44px;
  font-weight: 700;
  text-align: center;
  color: #017439;
  margin-bottom: 20px;
  line-height: 1.2;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.page-khuyen-mai__description {
  font-size: 18px;
  text-align: center;
  margin-bottom: 30px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}

.page-khuyen-mai__section-title {
  font-size: 36px;
  font-weight: 700;
  text-align: center;
  color: #017439;
  margin-bottom: 30px;
}

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

.page-khuyen-mai__text-block {
  font-size: 16px;
  line-height: 1.7;
  margin-bottom: 20px;
  text-align: justify;
}

.page-khuyen-mai__text-block--light {
  color: #f0f0f0;
}

.page-khuyen-mai__hero-section {
  position: relative;
  padding-top: 10px; /* Small top padding */
  background-color: #f5f5f5;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}

.page-khuyen-mai__hero-image {
  width: 100%;
  max-height: 500px;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
}

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

.page-khuyen-mai__hero-content {
  position: relative;
  z-index: 1;
  padding: 40px 15px;
  background-color: #ffffff;
  width: 100%;
  box-sizing: border-box;
}

.page-khuyen-mai__cta-buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-top: 30px;
}

.page-khuyen-mai__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 30px;
  font-size: 18px;
  font-weight: 600;
  border-radius: 8px;
  text-decoration: none;
  transition: all 0.3s ease;
  cursor: pointer;
  min-width: 180px;
  text-align: center;
  box-sizing: border-box;
  max-width: 100%;
  white-space: normal;
  word-wrap: break-word;
}

.page-khuyen-mai__btn--primary {
  background-color: #017439;
  color: #FFFFFF;
  border: 2px solid #017439;
}

.page-khuyen-mai__btn--primary:hover {
  background-color: #005a2d;
  border-color: #005a2d;
}

.page-khuyen-mai__btn--secondary {
  background-color: #FFFFFF;
  color: #017439;
  border: 2px solid #017439;
}

.page-khuyen-mai__btn--secondary:hover {
  background-color: #f0f0f0;
  color: #005a2d;
  border-color: #005a2d;
}

.page-khuyen-mai__btn--register {
  background-color: #C30808;
  color: #FFFF00;
  border-color: #C30808;
}

.page-khuyen-mai__btn--register:hover {
  background-color: #9e0606;
  border-color: #9e0606;
}

.page-khuyen-mai__btn--login {
  background-color: #C30808;
  color: #FFFF00;
  border-color: #C30808;
}

.page-khuyen-mai__btn--login:hover {
  background-color: #9e0606;
  border-color: #9e0606;
}

.page-khuyen-mai__promo-types-section {
  background-color: #017439;
  color: #FFFFFF;
}

.page-khuyen-mai__promo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-khuyen-mai__promo-card {
  background-color: #FFFFFF;
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  color: #333333;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-khuyen-mai__promo-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.page-khuyen-mai__promo-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
}

.page-khuyen-mai__card-title {
  font-size: 22px;
  font-weight: 600;
  color: #017439;
  margin: 20px 20px 10px;
  line-height: 1.3;
}

.page-khuyen-mai__card-text {
  font-size: 15px;
  line-height: 1.6;
  padding: 0 20px;
  flex-grow: 1;
  margin-bottom: 20px;
}

.page-khuyen-mai__card-btn {
  display: block;
  width: calc(100% - 40px);
  margin: 0 20px 20px;
  padding: 12px 15px;
  background-color: #017439;
  color: #FFFFFF;
  text-align: center;
  text-decoration: none;
  border-radius: 6px;
  font-weight: 600;
  transition: background-color 0.3s ease;
  box-sizing: border-box;
}

.page-khuyen-mai__card-btn:hover {
  background-color: #005a2d;
}

.page-khuyen-mai__guide-section {
  background-color: #f9f9f9;
}

.page-khuyen-mai__guide-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-khuyen-mai__step-item {
  background-color: #FFFFFF;
  border-radius: 12px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s ease;
}

.page-khuyen-mai__step-item:hover {
  transform: translateY(-5px);
}

.page-khuyen-mai__step-icon {
  width: 60px;
  height: 60px;
  background-color: #017439;
  color: #FFFFFF;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  font-weight: 700;
  margin: 0 auto 20px;
}

.page-khuyen-mai__step-title {
  font-size: 24px;
  font-weight: 600;
  color: #017439;
  margin-bottom: 15px;
}

.page-khuyen-mai__step-text {
  font-size: 15px;
  line-height: 1.6;
  color: #555555;
}

.page-khuyen-mai__cta-bottom {
  text-align: center;
  margin-top: 50px;
}

.page-khuyen-mai__terms-section ul {
  list-style-type: disc;
  padding-left: 25px;
  margin-top: 20px;
}

.page-khuyen-mai__terms-section li {
  font-size: 16px;
  line-height: 1.7;
  margin-bottom: 10px;
  color: #333333;
}

details.page-khuyen-mai__faq-item {
  margin-bottom: 15px;
  border-radius: 8px;
  border: 1px solid #e0e0e0;
  overflow: hidden;
  background: #fff;
  box-shadow: 0 2px 5px 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 20px;
  cursor: pointer;
  user-select: none;
  list-style: none;
  transition: background-color 0.3s ease;
  font-weight: 600;
  font-size: 18px;
  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: 16px;
  font-weight: 600;
  line-height: 1.5;
  text-align: left;
  color: #017439;
}
.page-khuyen-mai__faq-toggle {
  font-size: 24px;
  font-weight: bold;
  color: #666;
  flex-shrink: 0;
  margin-left: 15px;
  width: 28px;
  text-align: center;
}
details.page-khuyen-mai__faq-item .page-khuyen-mai__faq-answer {
  padding: 0 20px 20px;
  background: #f9f9f9;
  border-radius: 0 0 8px 8px;
  color: #555555;
}
.page-khuyen-mai__faq-answer p {
  margin: 0;
  padding: 0;
  line-height: 1.6;
}

.page-khuyen-mai__cta-final-section {
  background-color: #017439;
  color: #FFFFFF;
  padding: 60px 0;
  text-align: center;
}

.page-khuyen-mai__cta-final-section .page-khuyen-mai__description {
  color: #f0f0f0;
}

/* --- Responsive Styles --- */

@media (max-width: 1024px) {
  .page-khuyen-mai__main-title {
    font-size: 38px;
  }
  .page-khuyen-mai__section-title {
    font-size: 30px;
  }
  .page-khuyen-mai__promo-card img {
    
  }
  .page-khuyen-mai__card-title {
    font-size: 20px;
  }
  .page-khuyen-mai__step-title {
    font-size: 22px;
  }
}

@media (max-width: 768px) {
  .page-khuyen-mai__section {
    padding: 30px 0;
  }
  .page-khuyen-mai__container {
    padding: 0 15px;
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }
  
  /* HERO 主图区域 */
  .page-khuyen-mai__hero-section {
    padding-top: 10px; /* 約 10px 頂距 */
  }
  .page-khuyen-mai__hero-image img {
    object-fit: contain !important;
    aspect-ratio: unset !important;
    max-height: 300px;
  }
  .page-khuyen-mai__hero-content {
    padding: 25px 15px;
  }
  .page-khuyen-mai__main-title {
    font-size: clamp(28px, 8vw, 36px);
    margin-bottom: 15px;
  }
  .page-khuyen-mai__description {
    font-size: 15px;
    margin-bottom: 25px;
  }

  /* 按钮与按钮容器 */
  .page-khuyen-mai__cta-buttons {
    flex-direction: column;
    gap: 15px;
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }
  .page-khuyen-mai__btn {
    width: 100% !important;
    max-width: 100% !important;
    font-size: 16px;
    padding: 12px 20px;
    white-space: normal !important;
    word-wrap: break-word !important;
  }
  .page-khuyen-mai__card-btn {
    width: calc(100% - 30px) !important;
    margin: 0 15px 15px !important;
    font-size: 15px;
    padding: 10px 15px;
  }

  /* 产品展示图区域 (通用 promo-grid) */
  .page-khuyen-mai__promo-grid {
    grid-template-columns: 1fr;
    gap: 20px;
    margin-top: 25px;
  }
  .page-khuyen-mai__promo-card {
    margin-left: 15px;
    margin-right: 15px;
  }
  .page-khuyen-mai__promo-card img {
    
  }
  .page-khuyen-mai__card-title {
    font-size: 18px;
    margin: 15px 15px 8px;
  }
  .page-khuyen-mai__card-text {
    font-size: 14px;
    padding: 0 15px;
  }

  /* 装饰主标题 + 长文 SEO 区 */
  .page-khuyen-mai__section-title {
    font-size: clamp(24px, 7vw, 28px);
    margin-bottom: 20px;
  }
  .page-khuyen-mai__text-block {
    font-size: 15px;
    line-height: 1.6;
    text-align: left;
  }
  .page-khuyen-mai__guide-steps {
    grid-template-columns: 1fr;
    gap: 20px;
    margin-top: 25px;
  }
  .page-khuyen-mai__step-item {
    padding: 25px;
  }
  .page-khuyen-mai__step-icon {
    width: 50px;
    height: 50px;
    font-size: 28px;
    margin-bottom: 15px;
  }
  .page-khuyen-mai__step-title {
    font-size: 20px;
    margin-bottom: 10px;
  }
  .page-khuyen-mai__step-text {
    font-size: 14px;
  }
  .page-khuyen-mai__cta-bottom {
    margin-top: 30px;
  }

  /* 通用图片与容器 */
  .page-khuyen-mai img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }
  .page-khuyen-mai__promo-card,
  .page-khuyen-mai__step-item {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  /* FAQ */
  details.page-khuyen-mai__faq-item summary.page-khuyen-mai__faq-question { padding: 15px; }
  .page-khuyen-mai__faq-qtext { font-size: 15px; }
  details.page-khuyen-mai__faq-item .page-khuyen-mai__faq-answer { padding: 0 15px 15px; }
}