/* ====== Khuyến Mãi Page Styles ====== */
.page-khuyen-mai {
  background-color: #F5F7FA;
  color: #333333;
  font-family: 'Segoe UI', system-ui, sans-serif;
  max-width: 100%;
  overflow-x: hidden;
}
.page-khuyen-mai__hero {
  max-width: 1200px;
  margin: 0 auto;
  padding: 10px 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  background-color: #ffffff;
}
.page-khuyen-mai__hero-image {
  width: 100%;
  max-width: 1000px;
  margin-bottom: 20px;
}
.page-khuyen-mai__hero-image img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
}
.page-khuyen-mai__hero-content {
  text-align: center;
  max-width: 800px;
}
.page-khuyen-mai__hero-content h1 {
  font-weight: 600;
  line-height: 1.3;
  color: #E53935;
  margin: 0 0 8px;
}
.page-khuyen-mai__hero-content p {
  font-size: 1.1rem;
  line-height: 1.5;
  color: #333333;
  margin: 0 auto;
  max-width: 90%;
}
.page-khuyen-mai__promo-grid {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 16px;
}
.page-khuyen-mai__promo-grid h2 {
  color: #E53935;
  font-weight: 500;
  text-align: center;
  margin-bottom: 24px;
}
.page-khuyen-mai__promo-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.page-khuyen-mai__promo-grid h2 {
  grid-column: 1 / -1;
}
.page-khuyen-mai__promo-card {
  background-color: #FFFFFF;
  border: 1px solid #E0E0E0;
  border-radius: 12px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.page-khuyen-mai__promo-card img {
  width: 100%;
  max-height: 220px;
  object-fit: cover;
  aspect-ratio: 2/1;
}
.page-khuyen-mai__promo-card h3 {
  padding: 16px 16px 0;
  margin: 0;
  color: #333333;
  line-height: 1.4;
}
.page-khuyen-mai__promo-card p {
  padding: 8px 16px 16px;
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.5;
  flex-grow: 1;
}
.page-khuyen-mai__promo-btn {
  margin: auto 16px 16px;
  padding: 12px 20px;
  text-align: center;
  border-radius: 8px;
  background: linear-gradient(180deg, #FF5A4F, #E53935);
  color: #ffffff;
  font-weight: 700;
  text-decoration: none;
  transition: opacity 0.2s;
}
.page-khuyen-mai__promo-btn:hover {
  opacity: 0.9;
}
.page-khuyen-mai__guide {
  background-color: #FFFFFF;
  border-top: 1px solid #E0E0E0;
  padding: 32px 16px;
}
.page-khuyen-mai__guide > h2 {
  color: #E53935;
  font-weight: 500;
  text-align: center;
  margin: 0 auto 8px;
}
.page-khuyen-mai__guide > p {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 32px;
}
.page-khuyen-mai__guide {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 32px;
}
.page-khuyen-mai__guide > h2, .page-khuyen-mai__guide > p {
  flex-basis: 100%;
}
.page-khuyen-mai__step {
  flex: 1 1 280px;
  max-width: 320px;
  display: flex;
  flex-direction: column;
}
.page-khuyen-mai__step figure {
  margin: 0 0 12px;
  background-color: #F5F7FA;
  border-radius: 8px;
  overflow: hidden;
  width: 100%;
}
.page-khuyen-mai__step figure img {
  width: 100%;
  aspect-ratio: 2/1;
  object-fit: cover;
  margin: 0;
  display: block;
}
.page-khuyen-mai__step figcaption {
  text-align: center;
  font-weight: 500;
  margin-top: 4px;
  color: #E53935;
}
.page-khuyen-mai__step p {
  font-size: 0.9rem;
  line-height: 1.5;
  margin: 8px 0 16px;
}
.page-khuyen-mai__guide-btn {
  margin-top: auto;
  padding: 10px 16px;
  border-radius: 8px;
  background: linear-gradient(180deg, #FF5A4F, #E53935);
  color: #fff;
  text-align: center;
  font-weight: 600;
  text-decoration: none;
}
.page-khuyen-mai__faq {
  max-width: 800px;
  margin: 0 auto;
  padding: 16px;
  background: transparent;
  border: none;
}
.page-khuyen-mai__faq details {
  background: #ffffff;
  border: 1px solid #E0E0E0;
  border-radius: 8px;
  padding: 12px;
  margin-bottom: 12px;
}
.page-khuyen-mai__faq summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
  display: flex;
  align-items: center;
  color: #333;
}
.page-khuyen-mai__faq summary::-webkit-details-marker {
  display: none;
}
.page-khuyen-mai__faq-icon {
  display: inline-block;
  margin-right: 8px;
  font-style: normal;
  color: #E53935;
  font-weight: bold;
}
.page-khuyen-mai__faq details[open] > summary .page-khuyen-mai__faq-icon {
  content: '−';
}
.page-khuyen-mai__faq details p {
  margin: 8px 0 0;
  padding-top: 8px;
  border-top: 1px solid #E0E0E0;
}
@media (max-width: 768px) {
  .page-khuyen-mai {
    overflow-x: hidden;
  }
  .page-khuyen-mai .page-khuyen-mai__hero {
    padding-left: 12px;
    padding-right: 12px;
  }
  .page-khuyen-mai__hero-image img {
    max-width: 100% !important;
    height: auto !important;
    aspect-ratio: 2/1;
  }
  .page-khuyen-mai__hero-content h1 {
    font-size: 1.3em;
  }
  .page-khuyen-mai__hero-content p {
    font-size: 1rem;
  }
  .page-khuyen-mai__promo-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    padding: 16px;
  }
  .page-khuyen-mai__promo-card h3 {
    font-size: 1em;
    padding: 12px 12px 0;
  }
  .page-khuyen-mai__promo-card p {
    font-size: 0.8rem;
    padding: 6px 12px 12px;
    overflow-wrap: break-word;
  }
  .page-khuyen-mai__promo-btn {
    margin-top: auto;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 12px;
    padding: 10px 16px;
    font-size: 0.9em;
    max-width: 80%;
    white-space: normal;
    word-wrap: break-word;
  }
  .page-khuyen-mai__guide {
    padding: 16px;
    gap: 20px;
  }
  .page-khuyen-mai__step {
    max-width: 100%;
  }
  .page-khuyen-mai__step figure {
    margin-bottom: 8px;
  }
  .page-khuyen-mai__step figure img {
    max-width: 100% !important;
    height: auto !important;
  }
  .page-khuyen-mai__guide-btn {
    max-width: 100%;
    box-sizing: border-box;
  }
  .page-khuyen-mai__faq details p {
    overflow-wrap: break-word;
  }
  .page-khuyen-mai img {
    max-width: 100% !important;
    height: auto !important;
  }
}