.page-khuyen-mai { max-width: 100%; overflow-x: hidden; color: #f3f8ff; background: #0a1428; font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif; line-height: 1.6; }
.page-khuyen-mai__hero-section { padding-top: 16px; max-width: 1200px; margin: 0 auto; width: 100%; padding-left: 16px; padding-right: 16px; box-sizing: border-box; }
.page-khuyen-mai__hero-image { margin-bottom: 24px; }
.page-khuyen-mai__hero-image img { width: 100%; height: auto; aspect-ratio: 1024 / 400; object-fit: cover; border-radius: 16px; display: block; }
.page-khuyen-mai__hero-content { text-align: center; max-width: 900px; margin: 0 auto; }
.page-khuyen-mai__hero-title { color: #f3f8ff; font-size: clamp(1.8rem, 4vw, 2.8rem); font-weight: 800; line-height: 1.25; letter-spacing: -0.01em; margin: 0 0 16px; }
.page-khuyen-mai__hero-subtitle { color: #afc4e8; font-size: clamp(1rem, 2vw, 1.15rem); margin: 0 0 24px; max-width: 800px; margin-left: auto; margin-right: auto; }
.page-khuyen-mai__btn { display: inline-block; text-align: center; padding: 14px 32px; border-radius: 999px; text-decoration: none; font-weight: 700; font-size: 1rem; box-sizing: border-box; overflow-wrap: break-word; word-break: break-word; transition: transform 0.2s ease, box-shadow 0.2s ease; }
.page-khuyen-mai__btn:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(79, 168, 255, 0.3); }
.page-khuyen-mai__btn--primary { background: linear-gradient(180deg, #2b73f6 0%, #1144a6 100%); color: #ffffff; }
.page-khuyen-mai__btn--secondary { background: linear-gradient(180deg, #2b73f6 0%, #1144a6 100%); color: #ffffff; }
.page-khuyen-mai__promo-section, .page-khuyen-mai__rules { max-width: 1200px; margin: 48px auto; width: 100%; padding-left: 16px; padding-right: 16px; box-sizing: border-box; }
.page-khuyen-mai__section-header { text-align: center; margin-bottom: 32px; }
.page-khuyen-mai__section-title { color: #f3f8ff; font-size: clamp(1.5rem, 3vw, 2.2rem); font-weight: 700; margin: 0 0 12px; }
.page-khuyen-mai__section-desc { color: #afc4e8; max-width: 800px; margin: 0 auto; }
.page-khuyen-mai__promo-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.page-khuyen-mai__promo-card { background-color: #10233f; border: 1px solid #244d84; border-radius: 16px; padding: 16px; display: flex; flex-direction: column; box-sizing: border-box; }
.page-khuyen-mai__promo-image { border-radius: 12px; overflow: hidden; margin-bottom: 16px; }
.page-khuyen-mai__promo-image img { width: 100%; height: auto; aspect-ratio: 400 / 200; object-fit: contain; display: block; background: rgba(16, 35, 63, 0.6); }
.page-khuyen-mai__promo-title { color: #f3f8ff; font-size: 1.25rem; margin: 0 0 10px; text-align: left; }
.page-khuyen-mai__promo-text { color: #afc4e8; margin-bottom: 20px; font-size: 0.95rem; }
.page-khuyen-mai__btn--secondary { margin-top: auto; align-self: flex-start; }
.page-khuyen-mai__bonus-guide { max-width: 1000px; margin: 0 auto; padding: 0 16px 48px; }
.page-khuyen-mai__guide-steps { display: flex; flex-direction: column; gap: 32px; }
.page-khuyen-mai__guide-step { display: flex; flex-direction: row; gap: 24px; align-items: center; }
.page-khuyen-mai__guide-figure { flex: 0 0 45%; }
.page-khuyen-mai__guide-figure img { width: 100%; height: auto; max-width: 800px; aspect-ratio: 800 / 400; object-fit: cover; border-radius: 12px; display: block; border: 1px solid #244d84; }
.page-khuyen-mai__guide-content { flex: 1; }
.page-khuyen-mai__guide-title { color: #f2c14e; font-size: 1.35rem; margin: 0 0 8px; }
.page-khuyen-mai__guide-text { color: #afc4e8; margin: 0; }
.page-khuyen-mai__guide-text a { color: #4fa8ff; word-break: break-word; }
.page-khuyen-mai__rules-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.page-khuyen-mai__rule-item { background: #10233f; border: 1px solid #244d84; padding: 24px; border-radius: 16px; }
.page-khuyen-mai__rule-title { color: #f2c14e; margin-bottom: 10px; font-size: 1.15rem; }
.page-khuyen-mai__rule-text { color: #afc4e8; margin: 0; }
.page-khuyen-mai__faq { background-color: #08162b; padding: 48px 16px; margin-top: 24px; }
.page-khuyen-mai__faq .page-khuyen-mai__section-header { max-width: 1200px; margin: 0 auto 24px; text-align: center; }
.page-khuyen-mai__faq-list { max-width: 800px; margin: 0 auto; }
.page-khuyen-mai__faq-item { background: #10233f; border: 1px solid #244d84; border-radius: 12px; padding: 16px 20px; margin-bottom: 12px; }
.page-khuyen-mai__faq-item summary { cursor: pointer; color: #f3f8ff; font-weight: 600; list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 12px; font-size: 1.05rem; }
.page-khuyen-mai__faq-item summary::-webkit-details-marker, .page-khuyen-mai__faq-item summary::marker { display: none; }
.page-khuyen-mai__faq-question::after { content: '+'; font-size: 1.5rem; flex-shrink: 0; color: #4fa8ff; }
.page-khuyen-mai__faq-item[open] .page-khuyen-mai__faq-question::after { content: '−'; }
.page-khuyen-mai__faq-answer { color: #afc4e8; padding-top: 12px; margin-top: 12px; border-top: 1px solid #1b3357; font-size: 0.95rem; }
.page-khuyen-mai__faq-answer a { color: #4fa8ff; }
@media (max-width: 1024px) {
  .page-khuyen-mai__promo-grid { grid-template-columns: repeat(2, 1fr); }
  .page-khuyen-mai__guide-step { flex-direction: column; align-items: stretch; }
  .page-khuyen-mai__guide-figure { flex: 0 0 auto; width: 100%; margin-bottom: 12px; }
  .page-khuyen-mai__guide-content { text-align: left; }
}
@media (max-width: 768px) {
  .page-khuyen-mai__btn { max-width: 100%; }
  .page-khuyen-mai__hero-section { padding-top: 16px; }
  .page-khuyen-mai__hero-image img { aspect-ratio: 2 / 1; border-radius: 8px; }
  .page-khuyen-mai__promo-grid { grid-template-columns: 1fr; gap: 16px; }
  .page-khuyen-mai__rules-grid { grid-template-columns: 1fr; }
  .page-khuyen-mai__guide-figure { flex: 1 0 auto; }
  .page-khuyen-mai img { max-width: 100% !important; height: auto !important; }
  .page-khuyen-mai__section-header { margin-bottom: 20px; }
}