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

.page-khuyen-mai__hero-section {
  position: relative;
  width: 100%;
  padding-top: 10px; /* Small top padding, body handles header offset */
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  text-align: center;
  background-color: #F5F7FA;
}

.page-khuyen-mai__hero-image-wrapper {
  width: 100%;
  max-height: 600px;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
}

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

.page-khuyen-mai__hero-content {
  max-width: 900px;
  margin: 20px auto 40px auto;
  padding: 0 20px;
  z-index: 10;
}

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

.page-khuyen-mai__hero-description {
  font-size: clamp(1em, 1.8vw, 1.2em);
  color: #333333; /* Text Main */
  margin-bottom: 30px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.page-khuyen-mai__hero-cta {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

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

.page-khuyen-mai__btn-primary {
  background: linear-gradient(180deg, #FF5A4F 0%, #E53935 100%);
  color: #ffffff;
  border: none;
}

.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;
}

.page-khuyen-mai__btn-secondary:hover {
  background: #E53935;
  color: #ffffff;
  transform: translateY(-2px);
}

.page-khuyen-mai__section {
  padding: 40px 0;
  background-color: #F5F7FA; /* Background */
  color: #333333; /* Text Main */
}

.page-khuyen-mai__article-wrap {
  max-width: 1150px;
  margin: 0 auto;
  padding: 0 20px;
}

.page-khuyen-mai__section-title {
  font-size: clamp(1.8em, 3vw, 2.5em);
  color: #E53935; /* Main color */
  text-align: center;
  margin-bottom: 30px;
  font-weight: bold;
}

.page-khuyen-mai__intro-section p {
  font-size: 1.1em;
  margin-bottom: 20px;
  text-align: justify;
}

.page-khuyen-mai__info-card {
  background-color: #FFFFFF; /* Card BG */
  border: 1px solid #E0E0E0; /* Border */
  border-radius: 10px;
  padding: 25px;
  margin-top: 30px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.page-khuyen-mai__info-card-title {
  font-size: 1.5em;
  color: #E53935; /* Main color */
  margin-bottom: 15px;
  text-align: center;
}

.page-khuyen-mai__info-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.page-khuyen-mai__info-list li {
  margin-bottom: 10px;
  padding-left: 25px;
  position: relative;
  font-size: 1em;
}

.page-khuyen-mai__info-list li::before {
  content: '✅';
  position: absolute;
  left: 0;
  color: #E53935;
}

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

.page-khuyen-mai__promo-card {
  background-color: #FFFFFF; /* Card BG */
  border: 1px solid #E0E0E0; /* Border */
  border-radius: 10px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-khuyen-mai__promo-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.page-khuyen-mai__promo-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 15px;
  display: block;
}

.page-khuyen-mai__promo-card-title {
  font-size: 1.3em;
  color: #E53935; /* Main color */
  margin-bottom: 10px;
  font-weight: bold;
}

.page-khuyen-mai__promo-card p {
  font-size: 0.95em;
  color: #333333; /* Text Main */
  margin-bottom: 20px;
  flex-grow: 1;
}

.page-khuyen-mai__btn-small {
  padding: 8px 18px;
  font-size: 0.9em;
}

.page-khuyen-mai__guide-list {
  list-style: none;
  padding: 0;
  margin-top: 30px;
}

.page-khuyen-mai__guide-list li {
  background-color: #FFFFFF; /* Card BG */
  border: 1px solid #E0E0E0; /* Border */
  border-radius: 10px;
  padding: 25px;
  margin-bottom: 20px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
}

.page-khuyen-mai__guide-list li h3 {
  font-size: 1.4em;
  color: #E53935; /* Main color */
  margin-bottom: 10px;
  font-weight: bold;
}

.page-khuyen-mai__guide-list li p {
  font-size: 1em;
  margin-bottom: 15px;
  text-align: justify;
}

.page-khuyen-mai__btn-inline {
  padding: 8px 15px;
  font-size: 0.9em;
  margin-top: 10px;
}

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

.page-khuyen-mai__terms-list li {
  margin-bottom: 10px;
  font-size: 1em;
}

.page-khuyen-mai__faq-item {
  background-color: #FFFFFF; /* Card BG */
  border: 1px solid #E0E0E0; /* Border */
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 15px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.page-khuyen-mai__faq-item h3 {
  font-size: 1.2em;
  color: #E53935; /* Main color */
  margin-bottom: 10px;
  cursor: pointer;
  font-weight: bold;
}

.page-khuyen-mai__faq-item p {
  font-size: 1em;
  color: #333333; /* Text Main */
  margin-top: 0;
  line-height: 1.5;
}

.page-khuyen-mai__cta-bottom {
  padding: 60px 0;
  text-align: center;
  background-color: #F5F7FA;
}

.page-khuyen-mai__cta-box {
  background: linear-gradient(180deg, #FF5A4F 0%, #E53935 100%);
  color: #ffffff;
  padding: 40px;
  border-radius: 15px;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.page-khuyen-mai__cta-box .page-khuyen-mai__section-title {
  color: #ffffff;
  margin-bottom: 20px;
}

.page-khuyen-mai__cta-box p {
  font-size: 1.1em;
  margin-bottom: 30px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.page-khuyen-mai__cta-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  overflow: hidden;
}

.page-khuyen-mai__cta-buttons .page-khuyen-mai__btn-primary {
  background: #ffffff;
  color: #E53935;
  border: none;
}

.page-khuyen-mai__cta-buttons .page-khuyen-mai__btn-primary:hover {
  background: #f0f0f0;
  color: #E53935;
}

.page-khuyen-mai__cta-buttons .page-khuyen-mai__btn-secondary {
  background: transparent;
  color: #ffffff;
  border: 2px solid #ffffff;
}

.page-khuyen-mai__cta-buttons .page-khuyen-mai__btn-secondary:hover {
  background: #ffffff;
  color: #E53935;
}

/* ========================================= */
/* Responsive Styles */
/* ========================================= */

@media (max-width: 1024px) {
  .page-khuyen-mai__article-wrap {
    padding: 0 15px;
  }

  .page-khuyen-mai__hero-content {
    margin-top: 15px;
    margin-bottom: 30px;
  }

  .page-khuyen-mai__main-title {
    font-size: 2.5em;
  }

  .page-khuyen-mai__hero-description {
    font-size: 1.1em;
  }

  .page-khuyen-mai__promo-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
  }
}

@media (max-width: 768px) {
  .page-khuyen-mai {
    font-size: 16px;
    line-height: 1.6;
  }

  /* 1. 顶区标题 + 双 CTA */
  .page-khuyen-mai__hero-section {
    padding-top: 10px !important;
  }

  .page-khuyen-mai__hero-content {
    margin-top: 15px;
    margin-bottom: 25px;
    padding: 0 15px;
  }

  .page-khuyen-mai__main-title {
    font-size: 2em; /* Adjusted for mobile */
  }

  .page-khuyen-mai__hero-description {
    font-size: 1em;
  }

  .page-khuyen-mai__hero-cta {
    flex-direction: column;
    gap: 15px;
  }

  .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;
    padding-left: 15px;
    padding-right: 15px;
  }

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

  .page-khuyen-mai__section-title {
    font-size: 1.8em;
    margin-bottom: 25px;
  }

  .page-khuyen-mai__intro-section p,
  .page-khuyen-mai__terms-list li,
  .page-khuyen-mai__faq-item p {
    font-size: 0.95em;
  }

  .page-khuyen-mai__info-card {
    padding: 20px;
  }

  .page-khuyen-mai__info-card-title {
    font-size: 1.3em;
  }

  /* 3. 通用图片与 figure */
  .page-khuyen-mai img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }

  .page-khuyen-mai__promo-image {
    height: auto;
    max-height: 180px;
  }

  .page-khuyen-mai__section,
  .page-khuyen-mai__card,
  .page-khuyen-mai__container,
  .page-khuyen-mai__promo-card,
  .page-khuyen-mai__guide-list li,
  .page-khuyen-mai__faq-item {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  /* 4. 按钮与按钮容器 */
  .page-khuyen-mai__cta-buttons {
    flex-direction: column;
    gap: 15px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  .page-khuyen-mai__btn-inline {
    width: 100% !important;
    max-width: 100% !important;
    margin-top: 15px;
  }

  /* 5. 注册教程与 FAQ 区块 */
  .page-khuyen-mai__guide-list li h3 {
    font-size: 1.2em;
  }

  .page-khuyen-mai__faq-item h3 {
    font-size: 1.1em;
  }

  .page-khuyen-mai__cta-box {
    padding: 30px 15px;
  }

  .page-khuyen-mai__cta-box p {
    font-size: 1em;
  }
}

@media (max-width: 480px) {
  .page-khuyen-mai__main-title {
    font-size: 1.8em;
  }

  .page-khuyen-mai__section-title {
    font-size: 1.6em;
  }

  .page-khuyen-mai__promo-grid {
    grid-template-columns: 1fr;
  }

  .page-khuyen-mai__info-card-title {
    font-size: 1.2em;
  }

  .page-khuyen-mai__faq-item h3 {
    font-size: 1em;
  }
}