.page-about__hero-section {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 20px;
  min-height: 600px;
  color: #ffffff;
  text-align: center;
  overflow: hidden;
  padding-top: var(--header-offset, 120px);
}

.page-about__hero-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -1;
  filter: brightness(0.7);
}

.page-about__hero-content {
  max-width: 900px;
  z-index: 1;
  background: rgba(0, 0, 0, 0.5);
  padding: 30px;
  border-radius: 10px;
}

.page-about__hero-title {
  font-size: 3.5em;
  margin-bottom: 20px;
  color: #ffffff;
}

.page-about__hero-description {
  font-size: 1.2em;
  line-height: 1.6;
  margin-bottom: 30px;
}

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

.page-about__btn-primary, .page-about__btn-secondary, .page-about__btn-tertiary {
  display: inline-block;
  padding: 15px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
  white-space: normal;
  word-wrap: break-word;
  box-sizing: border-box;
  text-align: center;
}

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

.page-about__btn-primary:hover {
  background-color: #a00606;
  border-color: #a00606;
}

.page-about__btn-secondary {
  background-color: transparent;
  color: #ffffff;
  border: 2px solid #ffffff;
}

.page-about__btn-secondary:hover {
  background-color: #ffffff;
  color: #017439;
}

.page-about__btn-tertiary {
  background-color: #017439;
  color: #ffffff;
  border: 2px solid #017439;
}

.page-about__btn-tertiary:hover {
  background-color: #005a2e;
  border-color: #005a2e;
}

.page-about__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 20px;
}

.page-about__section-title {
  font-size: 2.8em;
  margin-bottom: 20px;
  text-align: center;
  color: #017439;
}

.page-about__section-description {
  font-size: 1.1em;
  line-height: 1.6;
  text-align: center;
  margin-bottom: 40px;
  color: #333333;
}

.page-about__mission-section, .page-about__responsibility-section, .page-about__team-support-section, .page-about__future-cta {
  padding: 80px 0;
  color: #333333;
  background-color: #ffffff;
}

.page-about__history-section, .page-about__offerings-section, .page-about__faq-section {
  padding: 80px 0;
  color: #ffffff;
  background-color: #017439;
}

.page-about__history-section .page-about__section-title, .page-about__offerings-section .page-about__section-title, .page-about__faq-section .page-about__section-title {
  color: #ffffff;
}

.page-about__history-section .page-about__section-description, .page-about__offerings-section .page-about__section-description, .page-about__faq-section .page-about__section-description {
  color: #f0f0f0;
}

.page-about__mission-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 40px;
  margin-top: 40px;
}

.page-about__mission-item {
  text-align: center;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  background-color: #f9f9f9;
}

.page-about__mission-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 20px;
}

.page-about__item-title {
  font-size: 1.8em;
  color: #017439;
  margin-bottom: 15px;
}

.page-about__item-description {
  font-size: 1em;
  line-height: 1.6;
  color: #555555;
}

.page-about__timeline {
  position: relative;
  max-width: 800px;
  margin: 60px auto;
}

.page-about__timeline::after {
  content: '';
  position: absolute;
  width: 2px;
  background-color: #ffffff;
  top: 0;
  bottom: 0;
  left: 50%;
  margin-left: -1px;
}

.page-about__timeline-item {
  padding: 10px 40px;
  position: relative;
  background-color: inherit;
  width: 50%;
}

.page-about__timeline-item::after {
  content: '';
  position: absolute;
  width: 25px;
  height: 25px;
  right: -17px;
  background-color: #ffffff;
  border: 4px solid #C30808;
  top: 15px;
  border-radius: 50%;
  z-index: 1;
}

.page-about__timeline-item:nth-child(odd) {
  left: 0;
}

.page-about__timeline-item:nth-child(even) {
  left: 50%;
}

.page-about__timeline-item:nth-child(even)::after {
  left: -16px;
}

.page-about__timeline-year {
  font-size: 1.5em;
  font-weight: bold;
  color: #FFFF00;
  margin-bottom: 10px;
}

.page-about__timeline-event {
  font-size: 1em;
  line-height: 1.6;
  color: #f0f0f0;
}

.page-about__history-image {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: 10px;
  margin: 40px auto 0 auto;
}

.page-about__responsibility-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-about__responsibility-card {
  background-color: #f9f9f9;
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  text-align: center;
}

.page-about__responsibility-card .page-about__card-title {
  color: #017439;
  font-size: 1.5em;
  margin-bottom: 15px;
}

.page-about__responsibility-card .page-about__card-text {
  color: #555555;
  line-height: 1.6;
}

.page-about__responsibility-image {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: 10px;
  margin: 40px auto 0 auto;
}

.page-about__cta-buttons--centered {
  justify-content: center;
  margin-top: 40px;
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.page-about__offerings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-about__offering-card {
  background-color: rgba(255, 255, 255, 0.1);
  padding: 20px;
  border-radius: 10px;
  text-align: center;
  color: #ffffff;
  display: flex;
  flex-direction: column;
}

.page-about__offering-image {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 15px;
}

.page-about__offering-card .page-about__card-title {
  color: #FFFF00;
  font-size: 1.6em;
  margin-bottom: 10px;
}

.page-about__offering-card .page-about__card-text {
  color: #f0f0f0;
  line-height: 1.6;
  flex-grow: 1;
  margin-bottom: 20px;
}

.page-about__offering-card .page-about__btn-tertiary {
  margin-top: auto;
}

.page-about__team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 40px;
  margin-top: 40px;
}

.page-about__team-card {
  background-color: #f9f9f9;
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  text-align: center;
}

.page-about__team-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 20px;
}

.page-about__team-card .page-about__card-title {
  color: #017439;
  font-size: 1.5em;
  margin-bottom: 15px;
}

.page-about__team-card .page-about__card-text {
  color: #555555;
  line-height: 1.6;
}

.page-about__faq-list {
  max-width: 800px;
  margin: 40px auto 0 auto;
}

.page-about__faq-item {
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  margin-bottom: 15px;
  overflow: hidden;
}

.page-about__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 25px;
  font-size: 1.2em;
  font-weight: bold;
  color: #ffffff;
  cursor: pointer;
  background-color: rgba(0, 0, 0, 0.3);
  transition: background-color 0.3s ease;
}

.page-about__faq-question:hover {
  background-color: rgba(0, 0, 0, 0.5);
}

.page-about__faq-toggle {
  font-size: 1.5em;
  line-height: 1;
  transition: transform 0.3s ease;
}

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

.page-about__faq-answer {
  max-height: 0;
  overflow: hidden;
  padding: 0 25px;
  transition: max-height 0.3s ease, padding 0.3s ease;
  color: #f0f0f0;
  font-size: 1em;
  line-height: 1.6;
}

.page-about__faq-item.active .page-about__faq-answer {
  max-height: 1000px !important;
  padding: 15px 25px;
}

.page-about__future-content {
  text-align: center;
}

.page-about__future-cta .page-about__section-title {
  color: #017439;
}

.page-about__future-cta .page-about__section-description, .page-about__future-cta .page-about__section-text {
  color: #333333;
  margin-bottom: 20px;
}

/* Responsive Styles */
@media (max-width: 1024px) {
  .page-about__hero-title {
    font-size: 3em;
  }
  .page-about__section-title {
    font-size: 2.2em;
  }
  .page-about__timeline::after {
    left: 31px;
  }
  .page-about__timeline-item {
    width: 100%;
    padding-left: 70px;
    padding-right: 25px;
  }
  .page-about__timeline-item::before {
    left: 60px;
    margin-left: -6px;
  }
  .page-about__timeline-item::after {
    left: 15px;
  }
  .page-about__timeline-item:nth-child(even) {
    left: 0%;
  }
  .page-about__timeline-item:nth-child(even)::after {
    left: 15px;
  }
}

@media (max-width: 768px) {
  .page-about__hero-title {
    font-size: 2.5em;
  }
  .page-about__hero-description {
    font-size: 1em;
  }
  .page-about__section-title {
    font-size: 1.8em;
  }
  .page-about__section-description {
    font-size: 0.9em;
  }
  .page-about__hero-buttons {
    flex-direction: column;
    gap: 15px;
  }
  .page-about__btn-primary, .page-about__btn-secondary, .page-about__btn-tertiary {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
  }
  .page-about__cta-buttons, .page-about__hero-buttons {
    flex-direction: column;
    gap: 15px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }
  .page-about__container {
    padding: 20px 15px;
  }
  .page-about__hero-section, .page-about__mission-section, .page-about__history-section, .page-about__responsibility-section, .page-about__offerings-section, .page-about__team-support-section, .page-about__faq-section, .page-about__future-cta {
    padding: 40px 0;
  }
  .page-about img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }
  .page-about__section, .page-about__card, .page-about__container, .page-about__mission-item, .page-about__responsibility-card, .page-about__offering-card, .page-about__team-card, .page-about__faq-item {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }
  .page-about__hero-section {
    padding-left: 0;
    padding-right: 0;
  }
  .page-about__hero-content {
    padding: 20px;
  }
  .page-about__faq-question, .page-about__faq-answer {
    padding-left: 15px;
    padding-right: 15px;
  }
}

@media (max-width: 480px) {
  .page-about__hero-title {
    font-size: 2em;
  }
  .page-about__section-title {
    font-size: 1.5em;
  }
  .page-about__hero-description {
    font-size: 0.9em;
  }
}