/* ===== Khối Hero ===== */
.page-khuyen-mai__hero-section { display: flex; flex-direction: column; align-items: stretch; background: #08162B; padding-top: 10px; }
.page-khuyen-mai__hero-image-wrap { width: 100%; max-width: 1400px; margin: 0 auto; padding: 0 16px; box-sizing: border-box; }
.page-khuyen-mai__hero-image { display: block; width: 100%; max-width: 100%; aspect-ratio: 17 / 5; object-fit: cover; border-radius: 20px; }
.page-khuyen-mai__hero-content { width: 100%; max-width: 1200px; margin: 0 auto; padding: 28px 20px 36px; box-sizing: border-box; text-align: center; }
.page-khuyen-mai__hero-title { font-weight: 800; line-height: 1.25; letter-spacing: -0.01em; color: #F3F8FF; margin: 0 0 16px; max-width: 960px; margin-left: auto; margin-right: auto; }
@media (min-width: 769px) { .page-khuyen-mai__hero-title { font-size: clamp(2rem, 5vw, 3.2rem); } }
@media (max-width: 768px) { .page-khuyen-mai__hero-title { font-size: clamp(1.6rem, 6.4vw, 2.2rem); } }
.page-khuyen-mai__hero-subtitle { color: #AFC4E8; font-size: 1.125rem; line-height: 1.7; max-width: 760px; margin: 0 auto 28px; }
.page-khuyen-mai__hero-actions { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; width: 100%; max-width: 100%; box-sizing: border-box; }

/* ===== Nút bấm chung ===== */
.page-khuyen-mai__btn { display: inline-block; text-decoration: none; font-weight: 700; padding: 13px 30px; border-radius: 40px; font-size: 1rem; line-height: 1.3; cursor: pointer; text-align: center; box-sizing: border-box; transition: opacity 0.2s ease; border: none; }
.page-khuyen-mai__btn--primary { background: linear-gradient(180deg, #2B73F6 0%, #1144A6 100%); color: #F3F8FF; }
.page-khuyen-mai__btn--secondary { background: transparent; color: #F2C14E; border: 1px solid #F2C14E; }
.page-khuyen-mai__btn--large { padding: 16px 40px; font-size: 1.125rem; }
.page-khuyen-mai__btn:hover { opacity: 0.9; }
@media (max-width: 768px) { .page-khuyen-mai__btn { max-width: 100%; box-sizing: border-box; white-space: normal; word-wrap: break-word; width: auto; } .page-khuyen-mai__hero-actions { width: 100%; max-width: 100%; overflow: hidden; box-sizing: border-box; } .page-khuyen-mai__hero-actions .page-khuyen-mai__btn { width: 100%; } }

/* ===== Khối Promo card ===== */
.page-khuyen-mai__promo-section { background: #08162B; padding: 40px 16px 64px; }
.page-khuyen-mai__section-header { max-width: 900px; margin: 0 auto 32px; text-align: center; }
.page-khuyen-mai__section-title { color: #F3F8FF; font-weight: 800; line-height: 1.3; margin: 0 0 12px; }
.page-khuyen-mai__section-subtitle { color: #AFC4E8; font-size: 1.0625rem; line-height: 1.6; margin: 0; }
.page-khuyen-mai__promo-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; max-width: 1200px; margin: 0 auto; width: 100%; box-sizing: border-box; }
.page-khuyen-mai__promo-card { background: #10233F; border: 1px solid #244D84; border-radius: 16px; overflow: hidden; display: flex; flex-direction: column; box-sizing: border-box; }
.page-khuyen-mai__promo-card .page-khuyen-mai__promo-image { display: block; width: 100%; height: auto; max-width: 100%; aspect-ratio: 2 / 1; object-fit: cover; }
.page-khuyen-mai__promo-body { padding: 20px 20px 26px; display: flex; flex-direction: column; gap: 10px; align-items: flex-start; }
.page-khuyen-mai__promo-title { color: #F3F8FF; font-size: 1.25rem; font-weight: 700; margin: 0; line-height: 1.35; }
.page-khuyen-mai__promo-desc { color: #AFC4E8; font-size: 0.95rem; line-height: 1.6; margin: 0; }
.page-khuyen-mai__promo-highlight { color: #F2C14E; font-size: 0.95rem; font-weight: 600; margin: 2px 0 4px; line-height: 1.4; }
.page-khuyen-mai__promo-body .page-khuyen-mai__btn { margin-top: auto; align-self: flex-start; }
@media (max-width: 768px) { .page-khuyen-mai__promo-grid { grid-template-columns: 1fr; gap: 18px; } }

/* ===== Khối Guide Section ===== */
.page-khuyen-mai__guide-section { background: #0A1D38; padding: 44px 16px 60px; }
.page-khuyen-mai__guide-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; max-width: 1100px; margin: 0 auto 32px; width: 100%; box-sizing: border-box; }
.page-khuyen-mai__guide-step { background: #10233F; border: 1px solid #244D84; border-radius: 16px; padding: 24px 20px; text-align: left; position: relative; box-sizing: border-box; }
.page-khuyen-mai__step-number { display: inline-block; background: #1D5FD1; color: #F3F8FF; font-size: 0.9rem; font-weight: 700; padding: 4px 14px; border-radius: 999px; margin-bottom: 14px; }
.page-khuyen-mai__step-title { color: #F3F8FF; font-size: 1.125rem; font-weight: 700; margin: 0 0 10px; }
.page-khuyen-mai__step-desc { color: #AFC4E8; font-size: 0.925rem; line-height: 1.6; margin: 0 0 16px; }
.page-khuyen-mai__text-link { color: #4FA8FF; text-decoration: none; font-weight: 600; }
.page-khuyen-mai__text-link:hover { text-decoration: underline; }
.page-khuyen-mai__guide-notes { max-width: 1100px; margin: 0 auto; background: #10233F; border: 1px solid #244D84; border-radius: 16px; padding: 24px 24px 12px; box-sizing: border-box; }
.page-khuyen-mai__notes-title { color: #F3F8FF; font-size: 1.125rem; font-weight: 700; margin: 0 0 16px; }
.page-khuyen-mai__notes-list { margin: 0; padding: 0; list-style: none; color: #AFC4E8; display: grid; gap: 10px; }
.page-khuyen-mai__notes-list li { padding-left: 20px; position: relative; line-height: 1.55; font-size: 0.95rem; }
.page-khuyen-mai__notes-list li::before { content: '✓'; position: absolute; left: 0; top: 0; color: #4FA8FF; font-weight: 700; }
.page-khuyen-mai__guide-step .page-khuyen-mai__btn { margin-top: 8px; width: auto; }
@media (max-width: 768px) { .page-khuyen-mai__guide-grid { grid-template-columns: 1fr; gap: 16px; } }

/* ===== Blog Cards ===== */
.page-khuyen-mai__blog-section { background: #08162B; padding: 44px 16px 56px; }
.page-khuyen-mai__blog-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; max-width: 1200px; margin: 0 auto; width: 100%; box-sizing: border-box; }
.page-khuyen-mai__blog-card { background: #10233F; border-radius: 16px; border: 1px solid #244D84; overflow: hidden; display: flex; flex-direction: column; box-sizing: border-box; }
.page-khuyen-mai__blog-card .page-khuyen-mai__blog-image { display: block; width: 100%; max-width: 100%; aspect-ratio: 2 / 1; object-fit: cover; }
.page-khuyen-mai__blog-body { padding: 18px 18px 20px; display: flex; flex-direction: column; gap: 8px; align-items: flex-start; flex: 1; }
.page-khuyen-mai__blog-tag { display: inline-block; display: inline-block; background: #1D5FD1; color: #F3F8FF; border-radius: 999px; font-size: 0.75rem; padding: 4px 12px; font-weight: 600; }
.page-khuyen-mai__blog-title { font-size: 1.1rem; font-weight: 700; line-height: 1.3; margin: 0; }
.page-khuyen-mai__blog-title a { color: #F3F8FF; text-decoration: none; }
.page-khuyen-mai__blog-title a:hover { color: #4FA8FF; }
.page-khuyen-mai__blog-excerpt { color: #AFC4E8; font-size: 0.9rem; line-height: 1.55; margin: 0; }
.page-khuyen-mai__blog-date { color: #F2C14E; font-size: 0.85rem; margin-top: auto; font-weight: 500; }
.page-khuyen-mai__blog-actions { max-width: 1200px; margin: 40px auto 0; text-align: center; }
@media (max-width: 768px) { .page-khuyen-mai__blog-grid { grid-template-columns: 1fr; gap: 18px; } }

/* ===== FAQ Section ===== */
.page-khuyen-mai__faq-section { background: #0A1D38; padding: 44px 16px 56px; }
.page-khuyen-mai__faq-list { max-width: 880px; margin: 0 auto; display: grid; gap: 12px; width: 100%; box-sizing: border-box; }
.page-khuyen-mai__faq-item { background: #10233F; border: 1px solid #244D84; border-radius: 12px; padding: 0; box-shadow: 0 0 0 rgba(79,168,255,0); transition: border-color 0.2s; }
.page-khuyen-mai__faq-question { color: #F3F8FF; font-weight: 600; font-size: 1.05rem; padding: 18px 46px 18px 20px; cursor: pointer; list-style: none; position: relative; line-height: 1.4; }
.page-khuyen-mai__faq-question::-webkit-details-marker { display: none; }
.page-khuyen-mai__faq-question::after { content: '+'; position: absolute; right: 20px; top: 50%; transform: translateY(-50%); font-size: 24px; color: #4FA8FF; font-weight: 400; }
.page-khuyen-mai__faq-answer { color: #AFC4E8; font-size: 0.95rem; line-height: 1.65; padding: 0 20px 20px; margin: 0; }

/* ===== CTA ===== */
.page-khuyen-mai__cta-section { background: #08162B; padding: 20px 16px 56px; text-align: center; }
.page-khuyen-mai__cta-title { color: #F3F8FF; font-weight: 800; font-size: 1.7rem; line-height: 1.3; max-width: 760px; margin: 0 auto 12px; }
.page-khuyen-mai__cta-subtitle { color: #AFC4E8; font-size: 1rem; font-size: 1rem; line-height: 1.6; max-width: 720px; margin: 0 auto 28px; }
.page-khuyen-mai__cta-section .page-khuyen-mai__btn { width: auto; }
@media (max-width: 768px) { .page-khuyen-mai__cta-section .page-khuyen-mai__btn { width: 100%; box-sizing: border-box; white-space: normal; word-wrap: break-word; } .page-khuyen-mai__cta-section .page-khuyen-mai__btn--large { padding: 15px 24px; } .page-khuyen-mai__cta-title { font-size: 1.4rem; } }

/* ===== Responsive mobile img (bat buoc co) ===== */
@media (max-width: 768px) {
  .page-khuyen-mai img { max-width: 100% !important; height: auto !important; }
  .page-khuyen-mai__section-title { font-size: 1.4rem; }
  .page-khuyen-mai__section-subtitle { font-size: 0.95rem; }
  .page-khuyen-mai__hero-image { aspect-ratio: 2 / 1; }
}