.page-about {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-main); /* #F2FFF6 */
  background-color: var(--bg); /* #08160F */
}

.page-about__hero-section {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 60px 20px;
  padding-top: 10px; /* body đã có padding-top từ --header-offset */
  text-align: center;
  overflow: hidden;
}

.page-about__hero-image-wrapper {
  width: 100%;
  max-height: 700px; /* Giới hạn chiều cao cho hero image */
  overflow: hidden;
  position: relative;
  z-index: 0;
}

.page-about__hero-image {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  filter: brightness(0.6); /* Làm mờ ảnh để text nổi bật hơn */
}

.page-about__hero-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
  margin-top: 40px; /* Đặt nội dung dưới ảnh */
  padding: 0 20px;
}

.page-about__main-title {
  font-size: clamp(2em, 4vw, 3.5em);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-main); /* #F2FFF6 */
  margin-bottom: 20px;
}

.page-about__description {
  font-size: 1.1em;
  color: var(--text-secondary); /* #A7D9B8 */
  margin-bottom: 30px;
}

.page-about__section {
  padding: 80px 0;
  text-align: center;
}

.page-about__dark-section {
  background-color: var(--bg); /* #08160F */
  color: var(--text-main); /* #F2FFF6 */
}

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

.page-about__heading {
  font-size: clamp(1.8em, 3vw, 2.8em);
  color: var(--text-main); /* #F2FFF6 */
  margin-bottom: 30px;
  font-weight: 600;
}

.page-about__sub-heading {
  font-size: clamp(1.3em, 2.2vw, 1.8em);
  color: var(--text-main); /* #F2FFF6 */
  margin-bottom: 15px;
  font-weight: 500;
}

.page-about__text {
  font-size: 1em;
  color: var(--text-secondary); /* #A7D9B8 */
  margin-bottom: 20px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.page-about__text-secondary {
  font-size: 0.95em;
  color: var(--text-secondary); /* #A7D9B8 */
}

.page-about__btn {
  display: inline-block;
  padding: 12px 25px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  transition: all 0.3s ease;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

.page-about__btn-primary {
  background: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
  color: #ffffff; /* Luôn dùng trắng cho button chính */
  border: none;
}

.page-about__btn-primary:hover {
  background: linear-gradient(180deg, #13994A 0%, #2AD16F 100%);
  transform: translateY(-2px);
}

.page-about__btn-secondary {
  background-color: transparent;
  color: var(--text-main); /* #F2FFF6 */
  border: 2px solid var(--border); /* #2E7A4E */
  margin-left: 15px;
}

.page-about__btn-secondary:hover {
  background-color: var(--deep-green); /* #0A4B2C */
  color: var(--glow); /* #57E38D */
  transform: translateY(-2px);
}

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

.page-about__mission-vision .page-about__image-full-width {
  margin-top: 40px;
}

.page-about__vision-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-about__card {
  background-color: var(--card-bg); /* #11271B */
  border-radius: 10px;
  padding: 30px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  text-align: left;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  color: var(--text-main); /* #F2FFF6 */
}

.page-about__card .page-about__sub-heading {
  color: var(--gold); /* #F2C14E */
}

.page-about__list {
  list-style: none;
  padding-left: 0;
  margin-top: 15px;
}

.page-about__list li {
  margin-bottom: 10px;
  color: var(--text-secondary); /* #A7D9B8 */
  position: relative;
  padding-left: 20px;
}

.page-about__list li::before {
  content: '✓';
  color: var(--glow); /* #57E38D */
  position: absolute;
  left: 0;
  font-weight: bold;
}

.page-about__advantages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-about__advantage-card {
  text-align: center;
  padding: 30px;
}

.page-about__advantage-card .page-about__sub-heading {
  color: var(--glow); /* #57E38D */
}

.page-about__advantage-card .page-about__btn {
  margin-top: 20px;
  margin-left: 0;
}

.page-about__responsibility-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-about__responsibility-item {
  text-align: left;
}

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

.page-about__team-member {
  text-align: center;
  padding: 20px;
}

.page-about__team-avatar {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 20px;
  border: 3px solid var(--glow); /* #57E38D */
}

.page-about__contact-methods {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-top: 40px;
  flex-wrap: wrap;
}

.page-about__faq-section {
  margin-top: 60px;
  text-align: left;
}

.page-about__faq-list {
  margin-top: 30px;
}

.page-about__faq-item {
  margin-bottom: 15px;
  border: 1px solid var(--divider); /* #1E3A2A */
  border-radius: 8px;
  overflow: hidden;
  color: var(--text-main); /* #F2FFF6 */
  background-color: var(--card-bg); /* #11271B */
}

.page-about__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 25px;
  background-color: var(--deep-green); /* #0A4B2C */
  cursor: pointer;
  font-weight: bold;
  color: var(--text-main); /* #F2FFF6 */
  position: relative;
  list-style: none;
}

.page-about__faq-question::-webkit-details-marker {
  display: none;
}

.page-about__faq-qtext {
  flex-grow: 1;
  color: var(--gold); /* #F2C14E */
}

.page-about__faq-toggle {
  font-size: 1.5em;
  line-height: 1;
  margin-left: 15px;
  color: var(--glow); /* #57E38D */
}

.page-about__faq-answer {
  padding: 15px 25px 20px;
  font-size: 0.95em;
  color: var(--text-secondary); /* #A7D9B8 */
}

.page-about__cta-final {
  padding-bottom: 80px;
}

.page-about__image-full-width {
  width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
  border-radius: 10px;
  margin-top: 60px;
  object-fit: cover;
}

/* Responsive styles */
@media (max-width: 1024px) {
  .page-about__hero-content {
    margin-top: 20px;
  }
  .page-about__section {
    padding: 60px 0;
  }
  .page-about__heading {
    margin-bottom: 25px;
  }
  .page-about__btn {
    padding: 10px 20px;
  }
}

@media (max-width: 768px) {
  .page-about__hero-section {
    padding: 40px 15px;
    padding-top: 10px !important;
  }
  .page-about__hero-content {
    margin-top: 20px;
    padding: 0 15px;
  }
  .page-about__main-title {
    font-size: 2em;
  }
  .page-about__description {
    font-size: 1em;
  }
  .page-about__section {
    padding: 40px 0;
  }
  .page-about__container,
  .page-about__hero-section,
  .page-about__mission-vision,
  .page-about__advantages,
  .page-about__responsibility,
  .page-about__team,
  .page-about__contact,
  .page-about__cta-final {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
    overflow: hidden !important;
  }

  .page-about__btn,
  .page-about__btn-primary,
  .page-about__btn-secondary,
  .page-about a[class*="button"],
  .page-about a[class*="btn"] {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
    margin-left: 0 !important; /* Reset margin for vertical stacking */
    margin-right: 0 !important;
    margin-bottom: 10px; /* Add space between stacked buttons */
  }

  .page-about__cta-buttons,
  .page-about__contact-methods {
    flex-direction: column;
    gap: 10px;
  }

  .page-about__cta-buttons a,
  .page-about__contact-methods a {
    width: 100%;
  }

  .page-about img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }

  .page-about__hero-image-wrapper {
    max-height: 400px; /* Adjust max-height for mobile hero */
  }

  .page-about__vision-grid,
  .page-about__advantages-grid,
  .page-about__responsibility-grid,
  .page-about__team-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .page-about__card {
    padding: 20px;
  }

  .page-about__faq-question {
    padding: 15px 20px;
  }

  .page-about__faq-answer {
    padding: 10px 20px 15px;
  }
}

@media (max-width: 480px) {
  .page-about__main-title {
    font-size: 1.8em;
  }
  .page-about__heading {
    font-size: 1.5em;
  }
  .page-about__sub-heading {
    font-size: 1.2em;
  }
  .page-about__description {
    font-size: 0.95em;
  }
  .page-about__text {
    font-size: 0.9em;
  }
}