.page-about {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-color, #333333);
  background-color: var(--background-color, #FFFFFF);
}

.page-about__section {
  padding: 60px 0;
  text-align: center;
  position: relative;
}

.page-about__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.page-about__container--centered {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.page-about__dark-bg {
  background-color: var(--primary-color, #017439);
  color: #ffffff;
}

.page-about__dark-bg h1, .page-about__dark-bg h2, .page-about__dark-bg h3 {
  color: #ffffff;
}

.page-about__dark-bg a {
  color: #FFFF00;
}

.page-about__light-bg {
  background-color: var(--secondary-color, #FFFFFF);
  color: var(--text-color, #333333);
}

.page-about__light-bg h1, .page-about__light-bg h2, .page-about__light-bg h3 {
  color: var(--text-color, #333333);
}

.page-about__light-bg a {
  color: var(--primary-color, #017439);
}

.page-about__section-title {
  font-size: 36px;
  margin-bottom: 40px;
  font-weight: bold;
}

.page-about__text-block {
  font-size: 18px;
  margin-bottom: 20px;
  line-height: 1.8;
}

.page-about__text-block strong {
  color: var(--primary-color, #017439);
}

.page-about__dark-bg .page-about__text-block strong {
  color: #FFFF00;
}

/* Hero Section */
.page-about__hero-section {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 60px 20px;
  padding-top: var(--header-offset, 120px);
  overflow: hidden;
}

.page-about__hero-container {
  position: relative;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
}

.page-about__hero-image {
  width: 100%;
  margin-bottom: 30px;
  border-radius: 8px;
  overflow: hidden;
}

.page-about__hero-image img {
  width: 100%;
  height: auto;
  max-width: 100%;
  display: block;
  object-fit: cover;
}

.page-about__hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  width: 100%;
}

.page-about__hero-title {
  font-size: 48px;
  font-weight: 900;
  margin-bottom: 20px;
  line-height: 1.2;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.page-about__hero-description {
  font-size: 20px;
  margin-bottom: 30px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
  text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.4);
}

.page-about__hero-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

.page-about__cta-button {
  display: inline-block;
  padding: 15px 40px;
  text-decoration: none;
  border-radius: 5px;
  font-size: 18px;
  font-weight: bold;
  transition: all 0.3s ease;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
  min-width: 180px;
}

.page-about__btn-primary {
  background: #C30808; /* Đăng ký/Đăng nhập màu đỏ */
  color: #FFFF00; /* Đăng ký/Đăng nhập font màu vàng */
  border: 2px solid #C30808;
}

.page-about__btn-primary:hover {
  background: #a30606;
  border-color: #a30606;
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.3);
}

.page-about__btn-secondary {
  background: var(--secondary-color, #FFFFFF);
  color: var(--primary-color, #017439);
  border: 2px solid var(--primary-color, #017439);
}

.page-about__btn-secondary:hover {
  background: var(--primary-color, #017439);
  color: var(--secondary-color, #FFFFFF);
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.3);
}

/* Intro Section */
.page-about__intro-section .page-about__image {
  margin-top: 40px;
  border-radius: 8px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

/* Mission Values Section */
.page-about__mission-values .page-about__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-about__dark-bg--card {
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
  padding: 30px;
  border-radius: 8px;
  text-align: left;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-about__dark-bg--card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.page-about__card-title {
  font-size: 24px;
  margin-bottom: 15px;
  font-weight: 700;
}

.page-about__card-text {
  font-size: 16px;
  line-height: 1.7;
}

/* Why Choose Section */
.page-about__feature-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-about__feature-item {
  background: #ffffff;
  padding: 30px;
  border-radius: 8px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  text-align: left;
}

.page-about__feature-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.page-about__feature-icon {
  width: 100%;
  height: auto;
  max-width: 100%;
  display: block;
  margin: 0 auto 20px auto;
  border-radius: 6px;
  object-fit: cover;
}

.page-about__feature-title {
  font-size: 22px;
  margin-bottom: 10px;
  color: var(--primary-color, #017439);
  font-weight: 700;
}

.page-about__feature-description {
  font-size: 16px;
  line-height: 1.7;
  color: #555555;
}

/* Security Support Section */
.page-about__grid--two-columns {
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  display: grid;
  margin-top: 40px;
  text-align: left;
}

.page-about__content-block {
  background: rgba(255, 255, 255, 0.1);
  padding: 30px;
  border-radius: 8px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-about__content-subtitle {
  font-size: 24px;
  margin-bottom: 15px;
  color: #ffffff;
  font-weight: 700;
}

.page-about__security-support .page-about__image--full-width {
  width: 100%;
  height: auto;
  max-width: 100%;
  display: block;
  margin-top: 40px;
  border-radius: 8px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

.page-about__link-button {
  display: inline-block;
  margin-top: 20px;
  padding: 10px 25px;
  background: #FFFF00;
  color: var(--primary-color, #017439);
  text-decoration: none;
  border-radius: 5px;
  font-weight: bold;
  transition: background-color 0.3s ease;
}

.page-about__link-button:hover {
  background: #e0e000;
}

/* Other Games Section */
.page-about__game-list {
  list-style: none;
  padding: 0;
  margin-top: 30px;
  text-align: left;
}

.page-about__game-item {
  font-size: 18px;
  margin-bottom: 15px;
  position: relative;
  padding-left: 30px;
}

.page-about__game-item::before {
  content: '▶';
  color: var(--primary-color, #017439);
  position: absolute;
  left: 0;
  top: 0;
}

.page-about__game-item a {
  text-decoration: none;
  font-weight: bold;
}

/* Commitment Section */
.page-about__commitment-list {
  list-style: none;
  padding: 0;
  margin-top: 30px;
  text-align: left;
}

.page-about__commitment-item {
  font-size: 18px;
  margin-bottom: 15px;
  position: relative;
  padding-left: 30px;
  color: #ffffff;
}

.page-about__commitment-item strong {
  color: #FFFF00;
}

.page-about__commitment-item::before {
  content: '✔';
  color: #FFFF00;
  position: absolute;
  left: 0;
  top: 0;
}

.page-about__commitment .page-about__image--centered {
  margin-top: 40px;
  border-radius: 8px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

/* FAQ Section */
.page-about__faq-list {
  margin-top: 40px;
  text-align: left;
}

.page-about__faq-item {
  margin-bottom: 15px;
  border-radius: 5px;
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.page-about__faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease;
  padding: 0 15px;
  opacity: 0;
  background: #f9f9f9;
  color: #555555;
}

.page-about__faq-item.active .page-about__faq-answer {
  max-height: 2000px !important;
  padding: 20px 15px !important;
  opacity: 1;
  border-radius: 0 0 5px 5px;
  box-shadow: inset 0 2px 5px rgba(0, 0, 0, 0.03);
}

.page-about__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 20px;
  background: #fff;
  border: 1px solid #e0e0e0;
  border-radius: 5px;
  cursor: pointer;
  user-select: none;
  transition: background-color 0.3s ease, border-color 0.3s ease;
  position: relative;
}

.page-about__faq-question:hover {
  background: #f5f5f5;
  border-color: #d0d0d0;
}

.page-about__faq-question:active {
  background: #eeeeee;
}

.page-about__faq-question h3 {
  margin: 0;
  padding: 0;
  flex: 1;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  pointer-events: none;
  color: var(--text-color, #333333);
}

.page-about__faq-toggle {
  font-size: 24px;
  font-weight: bold;
  line-height: 1;
  color: var(--primary-color, #017439);
  transition: transform 0.3s ease, color 0.3s ease;
  flex-shrink: 0;
  margin-left: 15px;
  pointer-events: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
}

.page-about__faq-item.active .page-about__faq-toggle {
  color: #C30808;
  transform: rotate(45deg);
}

/* Call to Action Section */
.page-about__call-to-action {
  padding: 80px 0;
}

.page-about__call-to-action .page-about__section-title {
  font-size: 40px;
  margin-bottom: 25px;
  text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.4);
}

.page-about__call-to-action .page-about__text-block {
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 40px;
  color: #f0f0f0;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .page-about__hero-title {
    font-size: 42px;
  }
  .page-about__section-title {
    font-size: 32px;
  }
  .page-about__text-block {
    font-size: 17px;
  }
  .page-about__grid--two-columns {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .page-about__hero-section {
    padding-top: var(--header-offset, 120px) !important;
    padding-bottom: 40px;
    padding-left: 15px;
    padding-right: 15px;
  }
  .page-about__hero-title {
    font-size: 32px;
  }
  .page-about__hero-description {
    font-size: 16px;
  }
  .page-about__cta-button {
    padding: 12px 30px;
    font-size: 16px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
  }
  .page-about__hero-buttons {
    flex-direction: column;
    gap: 15px;
  }
  .page-about__section {
    padding: 40px 0;
  }
  .page-about__container {
    padding: 0 15px;
  }
  .page-about__section-title {
    font-size: 28px;
    margin-bottom: 30px;
  }
  .page-about__text-block {
    font-size: 15px;
  }
  .page-about__grid {
    grid-template-columns: 1fr;
  }
  .page-about__dark-bg--card, .page-about__feature-item, .page-about__content-block {
    padding: 25px;
  }
  .page-about__card-title, .page-about__feature-title, .page-about__content-subtitle {
    font-size: 20px;
  }
  .page-about__game-item, .page-about__commitment-item {
    font-size: 16px;
  }
  .page-about__call-to-action .page-about__section-title {
    font-size: 30px;
  }
  .page-about__call-to-action .page-about__text-block {
    font-size: 16px;
  }
  /* Images responsive */
  .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-buttons {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }
  .page-about__faq-question {
    padding: 15px;
    flex-wrap: wrap;
  }
  .page-about__faq-question h3 {
    font-size: 15px;
    margin-bottom: 0;
    width: calc(100% - 40px);
  }
  .page-about__faq-toggle {
    margin-left: 10px;
    width: 24px;
    height: 24px;
    font-size: 20px;
  }
  .page-about__faq-answer {
    padding: 0 15px;
  }
  .page-about__faq-item.active .page-about__faq-answer {
    padding: 15px !important;
  }
}

@media (max-width: 480px) {
  .page-about__hero-title {
    font-size: 28px;
  }
  .page-about__section-title {
    font-size: 24px;
  }
  .page-about__cta-button {
    min-width: unset;
  }
  .page-about__call-to-action .page-about__section-title {
    font-size: 26px;
  }
}