.page-khuyen-mai { color: #F3F8FF; background: var(--deep-navy); }

.page-khuyen-mai__hero-section { padding: 10px 16px 24px; max-width: 1200px; margin: 0 auto; display: flex; flex-direction: column; }
.
.page-khuyen-mai__hero-image-wrapper { width: 100%; margin-bottom: 20px; }
.page-khuyen-mai__hero-image { width: 100%; height: auto; aspect-ratio: 17/5; object-fit: cover; border-radius: 16px; display: block; box-shadow: 0 12px 30px rgba(79, 168, 255, 0.25); }
.page-khuyen-mai__hero-content { text-align: left; max-width: 100%; }
.page-khuyen-mai__main-title { font-size: clamp(1.4rem, 3.5vw, 2.4rem); line-height: 1.3; font-weight: 800; color: #F3F8FF; margin: 0 0 12px; letter-spacing: -0.01em; }
.page-khuyen-mai__hero-description { font-size: 1rem; line-height: 1.7; color: #AFC4E8; margin: 0 0 24px; max-width: 640px; }
.page-khuyen-mai__hero-actions, .page-khuyen-mai__btn--center { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.page-khuyen-mai__btn { display: inline-block; padding: 12px 28px; border-radius: 50px; font-weight: 700; font-size: 0.95rem; text-decoration: none; text-align: center; transition: transform .2s ease, box-shadow .2s ease; border: none; cursor: pointer; max-width: 100%; box-sizing: border-box; white-space: normal; word-wrap: break-word; }
.page-khuyen-mai__btn--primary { background: linear-gradient(180deg, #2B73F6 0%, #1144A6 100%); color: #fff; box-shadow: 0 6px 18px rgba(43, 115, 246, 0.35); }
.page-khuyen-mai__btn--secondary { background: transparent; color: #F3F8FF; border: 2px solid #244D84; }
.page-khuyen-mai__btn--primary:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(43, 115, 246, 0.5); }
.page-khuyen-mai__btn--secondary:hover { border-color: #4FA8FF; color: #4FA8FF; transform: translateY(-2px); }

.page-khuyen-mai__promo-grid { max-width: 1200px; margin: 0 auto; padding: 24px 16px 40px; display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 24px; }
.page-khuyen-mai__section-title { font-size: clamp(1.4rem, 3vw, 2rem); font-weight: 800; color: #F3F8FF; text-align: center; grid-column: 1 / -1; margin: 0 0 16px; }
.page-khuyen-mai__promo-card { background: #10233F; border: 1px solid #244D84; border-radius: 16px; overflow: hidden; display: flex; flex-direction: column; transition: transform .2s ease, box-shadow .2s ease; }
.page-khuyen-mai__promo-card--highlight { box-shadow: 0 8px 24px rgba(79, 168, 255, 0.15); }
.page-khuyen-mai__promo-card:hover { transform: translateY(-4px); box-shadow: 0 12px 30px rgba(79, 168, 255, 0.2); }
.page-khuyen-mai__promo-image-wrapper { width: 100%; overflow: hidden; }
.page-khuyen-mai__promo-image { width: 100%; aspect-ratio: 2/1; object-fit: cover; display: block; transition: transform .3s ease; }
.page-khuyen-mai__promo-card:hover .page-khuyen-mai__promo-image { transform: scale(1.03); }
.page-khuyen-mai__promo-content { padding: 20px; display: flex; flex-direction: column; gap: 12px; flex: 1; }
.page-khuyen-mai__promo-title { font-size: 1.25rem; font-weight: 700; color: #F3F8FF; margin: 0; }
.page-khuyen-mai__promo-desc { font-size: 0.95rem; line-height: 1.6; color: #AFC4E8; margin: 0; flex: 1; }
.page-khuyen-mai__btn--promo { background: linear-gradient(180deg, #2B73F6 0%, #1144A6 100%); color: #fff; align-self: flex-start; padding: 10px 22px; }
.page-khuyen-mai__btn--promo:hover { transform: translateY(-2px); }

.page-khuyen-mai__guide-section { padding: 16px 16px 40px; }
.page-khuyen-mai__guide-inner { max-width: 1000px; margin: 0 auto; text-align: center; }
.page-khuyen-mai__guide-title { font-size: clamp(1.4rem, 3vw, 2rem); font-weight: 800; color: #F3F8FF; margin: 0 0 12px; }
.page-khuyen-mai__guide-intro { font-size: 1rem; color: #AFC4E8; margin: 0 auto 32px; max-width: 640px; line-height: 1.7; }
.page-khuyen-mai__guide-steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 24px; margin-bottom: 32px; }
.page-khuyen-mai__guide-step { padding: 28px 20px; }
.page-khuyen-mai__guide-step-number { display: inline-flex; align-items: center; justify-content: center; width: 48px; height: 48px; border-radius: 50%; background: linear-gradient(180deg, #2B73F6 0%, #1144A6 100%); color: #fff; font-weight: 800; font-size: 1.25rem; margin-bottom: 16px; }
.page-khuyen-mai__guide-step-title { font-size: 1.1rem; font-weight: 700; color: #F3F8FF; margin: 0 0 10px; }
.page-khuyen-mai__guide-step-desc { font-size: 0.9rem; line-height: 1.6; color: #AFC4E8; margin: 0; }
.page-khuyen-mai__btn--center { justify-content: center; margin: 0 auto; }
.page-khuyen-mai__faq-section { max-width: 800px; margin: 0 auto; padding: 24px 16px 48px; }
.page-khuyen-mai__faq-title { font-size: clamp(1.3rem, 2.5vw, 1.8rem); font-weight: 800; color: #F3F8FF; text-align: center; margin: 0 0 28px; }
.page-khuyen-mai__faq-list { display: flex; flex-direction: column; gap: 12px; }
.page-khuyen-mai__faq-item { background: #10233F; border: 1px solid #244D84; border-radius: 12px; overflow: hidden; }
.page-khuyen-mai__faq-question { list-style: none; padding: 18px 20px; font-weight: 700; color: #F3F8FF; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.page-khuyen-mai__faq-question::-webkit-details-marker { display: none; }
.page-khuyen-mai__faq-toggle { font-size: 1.5rem; font-weight: 400; color: #4FA8FF; line-height: 1; }
.page-khuyen-mai__faq-answer { padding: 0 20px 18px; color: #AFC4E8; font-size: 0.9rem; line-height: 1.7; border-top: 1px solid #1B3357; margin-top: 0; }

@media (max-width: 768px) {
  .page-khuyen-mai__hero-section { padding: 8px 12px 20px; }
  .page-khuyen-mai__hero-image { aspect-ratio: 2/1; }
  .page-khuyen-mai__hero-actions { flex-direction: column; align-items: stretch; }
  .page-khuyen-mai__btn { width: 100%; max-width: 100%; box-sizing: border-box; white-space: normal; word-wrap: break-word; }
  .page-khuyen-mai__promo-grid { grid-template-columns: 1fr; padding: 16px 12px 32px; }
  .page-khuyen-mai__guide-steps { grid-template-columns: 1fr; gap: 16px; }
  .page-khuyen-mai__btn--center { width: 100%; max-width: 100%; }
  .page-khuyen-mai__promo-image { width: 100%; max-width: 100%; height: auto; }
}