.page-about__hero-section { display: flex; flex-direction: column; align-items: center; text-align: center; padding: 10px 0 40px; background-color: var(--background-color, #F5F7FA); }
.page-about__hero-image-wrapper { width: 100%; max-width: 100%; overflow: hidden; box-sizing: border-box; }
.page-about__hero-image { max-width: 100%; height: auto; display: block; margin-bottom: 20px; }
.page-about__hero-content { max-width: 800px; padding: 0 20px; }
.page-about__main-title { font-weight: 700; line-height: 1.2; color: #E53935; margin-bottom: 15px; font-size: clamp(24px, 4vw, 48px); }
.page-about__hero-description { font-size: 18px; line-height: 1.6; color: #333333; margin-bottom: 30px; }
.page-about__cta-button { display: inline-block; background: linear-gradient(180deg, #FF5A4F 0%, #E53935 100%); color: #ffffff; padding: 15px 30px; border-radius: 8px; text-decoration: none; font-weight: 600; font-size: 18px; transition: transform 0.3s ease, box-shadow 0.3s ease; box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2); max-width: 100%; box-sizing: border-box; white-space: normal; word-wrap: break-word; }
.page-about__cta-button:hover { transform: translateY(-3px); box-shadow: 0 6px 15px rgba(0, 0, 0, 0.3); }

.page-about__section { padding: 60px 0; background-color: var(--background-color, #F5F7FA); }
.page-about__container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.page-about__section-title { font-size: clamp(28px, 3vw, 42px); font-weight: 700; color: #E53935; text-align: center; margin-bottom: 40px; }
.page-about__section-title--white { color: #ffffff; }
.page-about__card { background: #FFFFFF; color: #333333; border: 1px solid #E0E0E0; border-radius: 10px; padding: 30px; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05); text-align: left; }
.page-about__card-title { font-size: 22px; font-weight: 600; color: #E53935; margin-bottom: 15px; }

.page-about__grid-two-columns { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }

.page-about__why-choose-us .page-about__section-title { color: #333333; }
.page-about__reason-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 30px; }
.page-about__reason-item { text-align: center; }
.page-about__reason-image { max-width: 100%; height: auto; display: block; margin: 0 auto 20px; border-radius: 8px; }
.page-about__reason-title { font-size: 20px; font-weight: 600; color: #E53935; margin-bottom: 10px; }
.page-about__text-link { color: #FF5A4F; text-decoration: none; font-weight: 500; transition: color 0.3s ease; }
.page-about__text-link:hover { text-decoration: underline; color: #E53935; }

.page-about__dark-section { background: #E53935; }
.page-about__values-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 30px; text-align: center; }
.page-about__value-item { background: rgba(255, 255, 255, 0.1); border-radius: 10px; padding: 25px; color: #ffffff; }
.page-about__value-title { font-size: 20px; font-weight: 600; margin-bottom: 10px; color: #ffffff; }

.page-about__content-area p { font-size: 16px; line-height: 1.7; color: #333333; margin-bottom: 20px; }
.page-about__content-image { max-width: 100%; height: auto; display: block; margin: 20px auto 30px; border-radius: 10px; box-shadow: 0 4px 15px rgba(0,0,0,0.1); }

.page-about__commitment-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 30px; }

details.page-about__faq-item { margin-bottom: 15px; border-radius: 5px; border: 1px solid #e0e0e0; overflow: hidden; background: #fff; }
details.page-about__faq-item summary.page-about__faq-question { display: flex; justify-content: space-between; align-items: center; padding: 18px 20px; cursor: pointer; user-select: none; list-style: none; transition: background-color 0.3s ease; }
details.page-about__faq-item summary.page-about__faq-question::-webkit-details-marker { display: none; }
details.page-about__faq-item summary.page-about__faq-question:hover { background: #f5f5f5; }
.page-about__faq-qtext { flex: 1; font-size: 16px; font-weight: 600; line-height: 1.5; text-align: left; color: #333333; }
.page-about__faq-toggle { font-size: 24px; font-weight: bold; color: #666; flex-shrink: 0; margin-left: 15px; width: 28px; text-align: center; }
details.page-about__faq-item .page-about__faq-answer { padding: 0 20px 20px; background: #f9f9f9; border-radius: 0 0 5px 5px; color: #333333; }
details.page-about__faq-item .page-about__faq-answer p { margin-bottom: 10px; font-size: 15px; line-height: 1.6; }
details.page-about__faq-item .page-about__faq-answer p:last-child { margin-bottom: 0; }

.page-about__cta-bottom { padding: 80px 0; text-align: center; }
.page-about__cta-bottom .page-about__container { background: #E53935; padding: 50px; border-radius: 15px; box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2); }
.page-about__description--white { font-size: 18px; line-height: 1.6; color: #ffffff; margin-bottom: 40px; }
.page-about__cta-buttons { display: flex; justify-content: center; gap: 20px; flex-wrap: wrap; width: 100%; max-width: 100%; box-sizing: border-box; overflow: hidden; }
.page-about__btn-primary, .page-about__btn-secondary { display: inline-block; padding: 15px 30px; border-radius: 8px; text-decoration: none; font-weight: 600; font-size: 18px; transition: transform 0.3s ease, box-shadow 0.3s ease; max-width: 100%; box-sizing: border-box; white-space: normal; word-wrap: break-word; }
.page-about__btn-primary { background: linear-gradient(180deg, #FF5A4F 0%, #E53935 100%); color: #ffffff; border: 2px solid transparent; box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2); }
.page-about__btn-primary:hover { transform: translateY(-3px); box-shadow: 0 6px 15px rgba(0, 0, 0, 0.3); }
.page-about__btn-secondary { background: #ffffff; color: #E53935; border: 2px solid #E53935; box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1); }
.page-about__btn-secondary:hover { transform: translateY(-3px); box-shadow: 0 6px 15px rgba(0, 0, 0, 0.15); }

/* Mobile Responsiveness */
@media (max-width: 1023px) {
  /* HOMEPAGE TRIAL GAME CSS - KEPT AS PER INSTRUCTION, THOUGH THIS IS ABOUT.HTML */
  .page-about__home-hero { display: block !important; grid-template-columns: none !important; height: auto !important; max-height: none !important; overflow-x: hidden; box-sizing: border-box; }
  .page-about__hero-brand, .page-about__hero-jackpot { display: none !important; }
  .page-about__game-trial { width: 100% !important; max-width: 100% !important; height: auto !important; max-height: none !important; overflow: hidden !important; margin: 0 auto; padding: 0 0 12px !important; box-sizing: border-box; }
  .page-about__game-trial-shell { height: auto !important; max-height: none !important; width: 100%; max-width: 100%; overflow: hidden; box-sizing: border-box; }
  .page-about__game-trial-topbar, .page-about__game-trial-bottombar { display: none !important; }
  .page-about__game-trial-viewport { position: relative; width: 100%; aspect-ratio: 1024 / 768; flex: none !important; min-height: 240px; max-height: none !important; overflow: hidden; box-sizing: border-box; }
  .page-about__game-trial-frame { position: absolute; inset: 0; width: 100% !important; height: 100% !important; min-height: 0 !important; max-height: none !important; max-width: 100%; border: none; z-index: 1; overflow: hidden; }
  .page-about__game-trial-overlay { z-index: 5 !important; pointer-events: auto !important; }
  .page-about__game-trial-start { z-index: 6 !important; pointer-events: auto !important; touch-action: manipulation; }
}

@media (min-width: 1024px) {
  /* HOMEPAGE TRIAL GAME CSS - KEPT AS PER INSTRUCTION, THOUGH THIS IS ABOUT.HTML */
  .page-about__home-hero { display: grid; grid-template-columns: 26% 48% 26%; gap: 16px; align-items: stretch; width: 100%; max-width: 1280px; margin: 0 auto; padding: 10px 16px 24px; box-sizing: border-box; }
  .page-about__hero-brand, .page-about__hero-jackpot, .page-about__game-trial { height: 300px; max-height: 300px; overflow: hidden; box-sizing: border-box; }
  .page-about__game-trial { max-width: none !important; width: 100%; margin: 0; padding: 0; }
  .page-about__game-trial-shell { display: flex; flex-direction: column; height: 100%; max-height: 300px; box-sizing: border-box; }
  .page-about__game-trial-viewport { flex: 1; min-height: 0; position: relative; width: 100%; }
  .page-about__game-trial-frame { display: block; width: 100%; height: 100%; min-height: 0; border: none; }
  .page-about__hero-jackpot-claim { background: #c62828 !important; color: #fff !important; }
}

@media (max-width: 768px) {
  .page-about__hero-section { padding: 10px 0 20px; }
  .page-about__hero-content { padding: 0 15px; }
  .page-about__main-title { font-size: clamp(20px, 6vw, 36px); margin-bottom: 10px; }
  .page-about__hero-description { font-size: 15px; margin-bottom: 20px; }
  .page-about__cta-button { padding: 12px 20px; font-size: 16px; width: 100% !important; }

  .page-about__section { padding: 40px 0; }
  .page-about__container { padding: 0 15px; }
  .page-about__section-title { font-size: clamp(24px, 5vw, 36px); margin-bottom: 30px; }
  
  .page-about__grid-two-columns { grid-template-columns: 1fr; gap: 20px; }
  
  .page-about__reason-grid { grid-template-columns: 1fr; gap: 20px; }
  .page-about__reason-item { padding: 20px; }
  .page-about__reason-title { font-size: 18px; }

  .page-about__values-grid { grid-template-columns: 1fr; gap: 20px; }
  .page-about__value-item { padding: 20px; }
  .page-about__value-title { font-size: 18px; }

  .page-about__content-area p { font-size: 15px; line-height: 1.6; }
  .page-about__content-image { margin: 15px auto 25px; }

  .page-about__commitment-grid { grid-template-columns: 1fr; gap: 20px; }

  details.page-about__faq-item summary.page-about__faq-question { padding: 15px; }
  .page-about__faq-qtext { font-size: 15px; }
  details.page-about__faq-item .page-about__faq-answer { padding: 0 15px 15px; }

  .page-about__cta-bottom { padding: 50px 0; }
  .page-about__cta-bottom .page-about__container { padding: 30px 20px; }
  .page-about__description--white { font-size: 15px; margin-bottom: 30px; }
  .page-about__cta-buttons { flex-direction: column; gap: 15px; }
  .page-about__btn-primary, .page-about__btn-secondary { width: 100% !important; padding: 12px 20px; font-size: 16px; }

  /* General image and container responsiveness */
  .page-about img { max-width: 100% !important; width: 100% !important; height: auto !important; }
  .page-about__section, .page-about__card, .page-about__container, .page-about__hero-image-wrapper,
  .page-about__cta-buttons, .page-about__btn-container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  /* HOMEPAGE CSS - placeholder for full list (promo, hot-games, brand-intro, winner-ticker) */
  /* 2. Ưu đãi __promo-strip: grid repeat(4,1fr) (no horizontal scroll); overflow-x:hidden; card top-image-bottom-text; button width:100% */
  .page-about__promo-strip-track { grid-template-columns: repeat(4,1fr); overflow-x: hidden; }
  .page-about__promo-card-image { width: 100%; height: auto; }
  .page-about__promo-card-content { display: flex; flex-direction: column; align-items: center; text-align: center; padding: 10px; }
  .page-about__promo-card-button { width: 100% !important; }

  /* 3. Hấp dẫn __hot-games: 2 columns; hide name/rtp/desc; img 100% width */
  .page-about__hot-games-grid { grid-template-columns: repeat(2,1fr); gap: 15px; }
  .page-about__hot-games-item-name, .page-about__hot-games-item-rtp, .page-about__hot-games-item-desc { display: none; }
  .page-about__hot-games-item-image { width: 100%; height: auto; }

  /* 4. Thương hiệu __brand-intro (display for <=768px) */
  .page-about__brand-intro { display: block; padding: 20px 15px; text-align: center; }
  .page-about__brand-intro-content { font-size: 15px; line-height: 1.6; }

  /* 5. Dòng người trúng thưởng __winner-ticker: fixed bottom bar; body/main bottom padding */
  .page-about__winner-ticker { position: fixed; bottom: 0; left: 0; width: 100%; z-index: 9999; background: #333; color: #fff; padding: 10px 0; text-align: center; font-size: 14px; }
  body { padding-bottom: 44px; } /* Adjust if ticker height is different */
}

/* HOMEPAGE TRIAL GAME OVERLAY Z-INDEX AND HIDDEN CLASS - KEPT AS PER INSTRUCTION */
.page-about__game-trial-overlay { z-index: 5; pointer-events: auto; }
.page-about__game-trial-overlay.is-hidden { display: none !important; pointer-events: none !important; }
.page-about__game-trial-start { z-index: 6; pointer-events: auto; touch-action: manipulation; }
.page-about__game-trial-shell { border:1px solid rgba(212,175,55,.45); border-radius:10px; overflow:hidden; }
.page-about__reward-modal { position:fixed; inset:0; z-index:10000; background: rgba(0,0,0,0.7); display: flex; align-items: center; justify-content: center; }
.page-about__reward-modal-content { background: #fff; padding: 30px; border-radius: 10px; text-align: center; max-width: 400px; width: 90%; position: relative; }
.page-about__reward-modal-close { position: absolute; top: 10px; right: 10px; font-size: 24px; cursor: pointer; color: #333; }
.page-about__reward-modal-title { font-size: 24px; color: #E53935; margin-bottom: 15px; }
.page-about__reward-modal-text { font-size: 16px; color: #333; margin-bottom: 25px; }
.page-about__reward-modal-button { background: linear-gradient(180deg, #FF5A4F 0%, #E53935 100%); color: #fff; padding: 10px 20px; border-radius: 5px; text-decoration: none; font-weight: 600; }