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

.page-khuyen-mai__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  box-sizing: border-box;
}

.page-khuyen-mai__top-section {
  background-color: #017439; /* Brand primary color */
  color: #ffffff;
  text-align: center;
  padding: 80px 0 40px;
  position: relative;
  overflow: hidden;
  padding-top: 10px; /* Rely on body for header offset, keep small top padding */
}

.page-khuyen-mai__main-title {
  font-size: clamp(2.2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 15px;
  color: #ffffff;
}

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

.page-khuyen-mai__top-cta {
  display: flex;
  gap: 15px;
  justify-content: center;
  flex-wrap: wrap;
}

.page-khuyen-mai__btn {
  display: inline-block;
  padding: 12px 25px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 700;
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
  white-space: normal;
  word-wrap: break-word;
  box-sizing: border-box;
  max-width: 100%;
}

.page-khuyen-mai__btn-primary {
  background-color: #C30808; /* Register/Login color */
  color: #FFFF00; /* Register/Login font color */
  border: 2px solid #C30808;
}

.page-khuyen-mai__btn-primary:hover {
  background-color: #a00606;
  border-color: #a00606;
}

.page-khuyen-mai__btn-secondary {
  background-color: #ffffff;
  color: #017439; /* Brand primary color */
  border: 2px solid #017439;
}

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

.page-khuyen-mai__content-section {
  padding: 60px 0;
  background-color: #ffffff;
  color: #333333;
}

.page-khuyen-mai__article-wrap {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 20px;
  box-sizing: border-box;
}

.page-khuyen-mai__article h2,
.page-khuyen-mai__article h3 {
  color: #017439;
  margin-top: 40px;
  margin-bottom: 20px;
  line-height: 1.3;
}

.page-khuyen-mai__section-title {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 700;
}

.page-khuyen-mai__sub-title {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 600;
}

.page-khuyen-mai__article p {
  margin-bottom: 15px;
  font-size: 1.05rem;
  line-height: 1.7;
  color: #333333;
}

.page-khuyen-mai__article a {
  color: #017439;
  text-decoration: underline;
}

.page-khuyen-mai__article a:hover {
  color: #005a2d;
}

.page-khuyen-mai__list {
  list-style: disc;
  margin-left: 25px;
  margin-bottom: 20px;
  color: #333333;
}

.page-khuyen-mai__list li {
  margin-bottom: 10px;
  font-size: 1.05rem;
}

.page-khuyen-mai__steps-list {
  list-style: decimal;
  margin-left: 25px;
  margin-bottom: 20px;
  color: #333333;
}

.page-khuyen-mai__steps-list li {
  margin-bottom: 15px;
  font-size: 1.05rem;
  line-height: 1.6;
}

.page-khuyen-mai__figure {
  margin: 30px 0;
  text-align: center;
}

.page-khuyen-mai__figure img {
  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__figcaption {
  font-style: italic;
  font-size: 0.9rem;
  color: #666666;
  margin-top: 10px;
}

.page-khuyen-mai__cta-box {
  background-color: #f0f8f0;
  border-left: 5px solid #017439;
  padding: 25px;
  margin: 30px 0;
  border-radius: 8px;
  text-align: center;
}

.page-khuyen-mai__cta-box p {
  margin-bottom: 20px;
  font-size: 1.1rem;
  color: #333333;
}

.page-khuyen-mai__faq-container {
  margin-top: 30px;
  border-top: 1px solid #e0e0e0;
}

.page-khuyen-mai__faq-item {
  border-bottom: 1px solid #e0e0e0;
  padding: 15px 0;
  cursor: pointer;
}

.page-khuyen-mai__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  color: #017439;
  font-size: 1.1rem;
  list-style: none;
}

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

.page-khuyen-mai__faq-qtext {
  flex-grow: 1;
}

.page-khuyen-mai__faq-toggle {
  font-size: 1.5rem;
  line-height: 1;
  margin-left: 10px;
  transition: transform 0.3s ease;
}

.page-khuyen-mai__faq-item[open] .page-khuyen-mai__faq-toggle {
  transform: rotate(45deg);
}

.page-khuyen-mai__faq-answer {
  padding-top: 10px;
  padding-left: 20px;
  color: #555555;
  font-size: 1rem;
}

.page-khuyen-mai__cta-final {
  text-align: center;
  margin-top: 50px;
  margin-bottom: 30px;
}

/* Mobile Responsive Styles */
@media (max-width: 1024px) {
  .page-khuyen-mai__main-title {
    font-size: clamp(2rem, 5vw, 2.8rem);
  }
  .page-khuyen-mai__intro-text {
    font-size: clamp(0.95rem, 2.2vw, 1.15rem);
  }
  .page-khuyen-mai__section-title {
    font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  }
  .page-khuyen-mai__sub-title {
    font-size: clamp(1.3rem, 2.8vw, 1.8rem);
  }
}

@media (max-width: 768px) {
  /* 1. 顶区标题 + 双 CTA */
  .page-khuyen-mai__top-section {
    padding: 60px 0 30px;
    padding-top: 10px !important; /* Fixed header offset handled by body, small top padding for content */
  }

  .page-khuyen-mai__main-title {
    font-size: clamp(1.8rem, 7vw, 2.5rem);
    margin-bottom: 10px;
  }

  .page-khuyen-mai__intro-text {
    font-size: clamp(0.9rem, 3.5vw, 1.1rem);
    margin-bottom: 20px;
    padding: 0 10px;
  }

  .page-khuyen-mai__top-cta {
    flex-direction: column;
    gap: 10px;
    padding: 0 15px;
  }

  .page-khuyen-mai__btn {
    padding: 12px 20px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
  }

  /* 2. 单栏长文容器 */
  .page-khuyen-mai__article-wrap {
    padding: 0 15px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

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

  .page-khuyen-mai__article h2,
  .page-khuyen-mai__article h3 {
    margin-top: 30px;
    margin-bottom: 15px;
  }

  .page-khuyen-mai__section-title {
    font-size: clamp(1.5rem, 6vw, 2rem);
  }

  .page-khuyen-mai__sub-title {
    font-size: clamp(1.2rem, 5vw, 1.6rem);
  }

  .page-khuyen-mai__article p,
  .page-khuyen-mai__list li,
  .page-khuyen-mai__steps-list li {
    font-size: 1rem;
    line-height: 1.6;
  }

  .page-khuyen-mai__list,
  .page-khuyen-mai__steps-list {
    margin-left: 20px;
  }

  .page-khuyen-mai__cta-box {
    padding: 20px;
    margin: 25px 0;
  }

  /* 3. 通用图片与 figure */
  .page-khuyen-mai__figure {
    margin: 20px 0;
  }

  .page-khuyen-mai__figure img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    box-sizing: border-box !important;
  }

  .page-khuyen-mai__figcaption {
    font-size: 0.85rem;
  }

  /* 4. 按钮与按钮容器 (already covered in top-cta and general .page-khuyen-mai__btn) */
  .page-khuyen-mai__cta-final {
    padding: 0 15px;
  }

  .page-khuyen-mai__cta-final .page-khuyen-mai__btn {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
  }

  /* 5. FAQ 区块 */
  .page-khuyen-mai__faq-item {
    padding: 12px 0;
  }

  .page-khuyen-mai__faq-question {
    font-size: 1rem;
  }

  .page-khuyen-mai__faq-answer {
    padding-left: 15px;
    font-size: 0.95rem;
  }
}