.page-khuyen-mai { font-family: 'Arial', sans-serif; color: #333333; background-color: #F5F7FA; }
.page-khuyen-mai__hero-section { position: relative; overflow: hidden; margin-bottom: 40px; padding-top: 10px; }
.page-khuyen-mai__hero-image { width: 100%; height: 600px; overflow: hidden; }
.page-khuyen-mai__hero-image img { width: 100%; height: 100%; object-fit: cover; display: block; }
.page-khuyen-mai__hero-content { position: absolute; top: 0; left: 0; width: 100%; height: 100%; display: flex; flex-direction: column; justify-content: center; align-items: center; text-align: center; background: rgba(0, 0, 0, 0.5); color: #ffffff; padding: 20px; }
.page-khuyen-mai__hero-title { font-size: 3.5em; font-weight: bold; margin-bottom: 15px; max-width: 900px; line-height: 1.2; color: #ffffff; }
.page-khuyen-mai__hero-description { font-size: 1.2em; max-width: 800px; margin-bottom: 30px; line-height: 1.6; color: #f0f0f0; }
.page-khuyen-mai__hero-buttons { display: flex; gap: 20px; }
.page-khuyen-mai__btn-primary, .page-khuyen-mai__btn-secondary { display: inline-block; padding: 15px 30px; border-radius: 8px; text-decoration: none; font-weight: bold; transition: all 0.3s ease; white-space: normal; word-wrap: break-word; max-width: 100%; box-sizing: border-box; }
.page-khuyen-mai__btn-primary { background: linear-gradient(180deg, #FF5A4F 0%, #E53935 100%); color: #ffffff; border: none; }
.page-khuyen-mai__btn-primary:hover { transform: translateY(-3px); box-shadow: 0 5px 15px rgba(229, 57, 53, 0.4); }
.page-khuyen-mai__btn-secondary { background: #ffffff; color: #E53935; border: 2px solid #E53935; }
.page-khuyen-mai__btn-secondary:hover { transform: translateY(-3px); box-shadow: 0 5px 15px rgba(229, 57, 53, 0.2); }

.page-khuyen-mai__container { max-width: 1200px; margin: 0 auto; padding: 0 15px; }
.page-khuyen-mai__overview-section, .page-khuyen-mai__benefits-section, .page-khuyen-mai__faq-section { padding: 60px 0; text-align: center; }
.page-khuyen-mai__section-title { font-size: 2.5em; color: #E53935; margin-bottom: 40px; position: relative; padding-bottom: 15px; }
.page-khuyen-mai__section-title::after { content: ''; position: absolute; left: 50%; bottom: 0; transform: translateX(-50%); width: 80px; height: 4px; background: #FF5A4F; border-radius: 2px; }
.page-khuyen-mai__text-block { font-size: 1.1em; line-height: 1.8; max-width: 900px; margin: 0 auto 20px; color: #333333; }

.page-khuyen-mai__promo-grid-section { background-color: #E53935; padding: 80px 0; }
.page-khuyen-mai__section-title--light { color: #ffffff; }
.page-khuyen-mai__promo-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; margin-top: 40px; }
.page-khuyen-mai__promo-card { background-color: #ffffff; border-radius: 10px; overflow: hidden; box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1); transition: transform 0.3s ease; text-align: left; }
.page-khuyen-mai__promo-card:hover { transform: translateY(-10px); }
.page-khuyen-mai__promo-card-image { width: 100%; height: 200px; overflow: hidden; }
.page-khuyen-mai__promo-card-image img { width: 100%; height: 100%; object-fit: cover; display: block; }
.page-khuyen-mai__promo-card-body { padding: 25px; }
.page-khuyen-mai__promo-card-title { font-size: 1.5em; color: #E53935; margin-bottom: 15px; font-weight: bold; }
.page-khuyen-mai__promo-card-description { font-size: 0.95em; line-height: 1.6; color: #666666; margin-bottom: 20px; }
.page-khuyen-mai__btn-small { padding: 10px 20px; font-size: 0.9em; }

.page-khuyen-mai__benefits-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px; margin-top: 40px; text-align: left; }
.page-khuyen-mai__benefit-item { background-color: #ffffff; border-radius: 10px; padding: 30px; box-shadow: 0 3px 15px rgba(0, 0, 0, 0.08); }
.page-khuyen-mai__benefit-title { font-size: 1.8em; color: #FF5A4F; margin-bottom: 10px; font-weight: bold; }
.page-khuyen-mai__benefit-description { font-size: 1em; line-height: 1.7; color: #555555; }

.page-khuyen-mai__guide-section { background-color: #FF5A4F; padding: 80px 0; }
.page-khuyen-mai__guide-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; margin-top: 40px; text-align: center; }
.page-khuyen-mai__step-item { background-color: rgba(255, 255, 255, 0.1); border-radius: 10px; padding: 30px; color: #ffffff; }
.page-khuyen-mai__step-icon { font-size: 2.5em; font-weight: bold; color: #ffffff; background-color: #E53935; border-radius: 50%; width: 70px; height: 70px; display: flex; justify-content: center; align-items: center; margin: 0 auto 20px; }
.page-khuyen-mai__step-title { font-size: 1.6em; margin-bottom: 10px; font-weight: bold; color: #ffffff; }
.page-khuyen-mai__step-description { font-size: 0.95em; line-height: 1.6; color: #f0f0f0; }
.page-khuyen-mai__step-description a { color: #ffffff; text-decoration: underline; }
.page-khuyen-mai__step-description a:hover { text-decoration: none; }
.page-khuyen-mai__cta-buttons--center { text-align: center; margin-top: 50px; }
.page-khuyen-mai__btn-large { padding: 18px 40px; font-size: 1.1em; }

.page-khuyen-mai__faq-list { max-width: 900px; margin: 40px auto 0; text-align: left; }
.page-khuyen-mai__faq-item { background-color: #ffffff; border: 1px solid #E0E0E0; border-radius: 8px; margin-bottom: 15px; overflow: hidden; }
.page-khuyen-mai__faq-question { display: flex; justify-content: space-between; align-items: center; padding: 20px 25px; cursor: pointer; background-color: #f9f9f9; font-weight: bold; color: #E53935; }
.page-khuyen-mai__faq-question::-webkit-details-marker { display: none; }
.page-khuyen-mai__faq-question::marker { display: none; }
.page-khuyen-mai__faq-toggle { font-size: 1.5em; line-height: 1; 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: 15px 25px 25px; font-size: 1em; line-height: 1.7; color: #555555; border-top: 1px solid #E0E0E0; }

/* Common image responsive styles */
.page-khuyen-mai img { max-width: 100%; height: auto; display: block; }

/* Mobile responsiveness */
@media (max-width: 768px) {
  .page-khuyen-mai__hero-section { margin-bottom: 30px; padding-top: 10px; }
  .page-khuyen-mai__hero-image { height: 400px; }
  .page-khuyen-mai__hero-title { font-size: 2.2em; max-width: 90%; }
  .page-khuyen-mai__hero-description { font-size: 1em; max-width: 90%; margin-bottom: 20px; }
  .page-khuyen-mai__hero-buttons { flex-direction: column; gap: 15px; width: 100%; max-width: 300px; margin: 0 auto; padding: 0 15px; }
  .page-khuyen-mai__btn-primary, .page-khuyen-mai__btn-secondary { 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; }

  .page-khuyen-mai__overview-section, .page-khuyen-mai__benefits-section, .page-khuyen-mai__faq-section { padding: 40px 0; }
  .page-khuyen-mai__section-title { font-size: 2em; margin-bottom: 30px; }
  .page-khuyen-mai__text-block { font-size: 0.95em; }

  .page-khuyen-mai__promo-grid-section { padding: 50px 0; }
  .page-khuyen-mai__promo-grid { grid-template-columns: 1fr; gap: 20px; }
  .page-khuyen-mai__promo-card-image { height: 180px; }
  .page-khuyen-mai__promo-card-title { font-size: 1.3em; }
  .page-khuyen-mai__promo-card-description { font-size: 0.9em; }

  .page-khuyen-mai__benefits-list { grid-template-columns: 1fr; gap: 20px; }
  .page-khuyen-mai__benefit-title { font-size: 1.5em; }

  .page-khuyen-mai__guide-section { padding: 50px 0; }
  .page-khuyen-mai__guide-steps { grid-template-columns: 1fr; gap: 20px; }
  .page-khuyen-mai__step-icon { width: 60px; height: 60px; font-size: 2em; }
  .page-khuyen-mai__step-title { font-size: 1.4em; }
  .page-khuyen-mai__btn-large { padding: 15px 30px; font-size: 1em; }

  .page-khuyen-mai__faq-question { padding: 15px 20px; font-size: 0.95em; }
  .page-khuyen-mai__faq-answer { padding: 10px 20px 20px; font-size: 0.9em; }

  .page-khuyen-mai img { max-width: 100% !important; width: 100% !important; height: auto !important; }
  .page-khuyen-mai__container, .page-khuyen-mai__promo-card, .page-khuyen-mai__benefit-item, .page-khuyen-mai__step-item, .page-khuyen-mai__faq-item {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }
}