body {
  background-color: #08160F; /* Nền tối theo custom color */
  color: #F2FFF6; /* Màu chữ chính theo custom color */
}

.page-about {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: #F2FFF6; /* Text Main */
  background-color: #08160F; /* Background */
}

.page-about__hero-section {
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 10px 20px 60px; /* Nhỏ hơn so với header offset */
  box-sizing: border-box;
  overflow: hidden;
}

.page-about__hero-image-wrapper {
  width: 100%;
  max-width: 100%;
  overflow: hidden;
  margin-bottom: 20px; /* Khoảng cách giữa ảnh và nội dung */
}

.page-about__hero-image {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  border-radius: 8px;
}

.page-about__hero-content {
  text-align: center;
  max-width: 900px;
  padding: 0 20px;
  box-sizing: border-box;
}

.page-about__main-title {
  font-size: clamp(2.2em, 4vw, 3.5em);
  font-weight: bold;
  color: #F2FFF6; /* Text Main */
  margin-bottom: 15px;
  line-height: 1.2;
}

.page-about__hero-description {
  font-size: 1.1em;
  color: #A7D9B8; /* Text Secondary */
  margin-bottom: 30px;
}

.page-about__section {
  padding: 60px 20px;
  box-sizing: border-box;
}

.page-about__dark-section {
  background-color: #11271B; /* Card BG */
  color: #F2FFF6; /* Text Main */
}

.page-about__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
  box-sizing: border-box;
}

.page-about__flex-container {
  display: flex;
  gap: 40px;
  align-items: center;
}

.page-about__flex-container--reverse {
  flex-direction: row-reverse;
}

.page-about__content-column {
  flex: 1;
  min-width: 0;
}

.page-about__image-column {
  flex: 1;
  min-width: 0;
  text-align: center;
}

.page-about__image {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
  object-fit: cover;
  margin: 0 auto;
  min-width: 200px;
  min-height: 200px;
}

.page-about__section-title {
  font-size: clamp(1.8em, 3.5vw, 2.8em);
  font-weight: bold;
  color: #F2FFF6; /* Text Main */
  margin-bottom: 25px;
  text-align: center;
}

.page-about__dark-section .page-about__section-title {
  color: #F2FFF6; /* Text Main */
}

.page-about__sub-title {
  font-size: 1.5em;
  color: #F2FFF6; /* Text Main */
  margin-top: 30px;
  margin-bottom: 15px;
}

.page-about__text-block {
  font-size: 1em;
  color: #A7D9B8; /* Text Secondary */
  margin-bottom: 20px;
}

.page-about__text-block--center {
  text-align: center;
}

.page-about__mission-list,
.page-about__support-list {
  list-style: none;
  padding: 0;
  margin-bottom: 20px;
}

.page-about__list-item {
  font-size: 1em;
  color: #F2FFF6; /* Text Main */
  margin-bottom: 10px;
  position: relative;
  padding-left: 25px;
}

.page-about__list-item::before {
  content: '✔';
  color: #57E38D; /* Glow */
  position: absolute;
  left: 0;
  top: 0;
  font-weight: bold;
}

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

.page-about__card {
  background-color: #11271B; /* Card BG */
  color: #F2FFF6; /* Text Main */
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  border: 1px solid #2E7A4E; /* Border */
  display: flex;
  flex-direction: column;
  min-height: 200px; /* Đảm bảo kích thước tối thiểu cho card */
}

.page-about__card-title {
  font-size: 1.4em;
  font-weight: bold;
  color: #F2FFF6; /* Text Main */
  margin-bottom: 15px;
}

.page-about__card-description {
  font-size: 0.95em;
  color: #A7D9B8; /* Text Secondary */
  line-height: 1.5;
}

.page-about__btn-primary,
.page-about__btn-secondary {
  display: inline-block;
  padding: 15px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  transition: background-color 0.3s ease, transform 0.2s ease;
  text-align: center;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

.page-about__btn-primary {
  background: linear-gradient(180deg, #2AD16F 0%, #13994A 100%); /* Button */
  color: #F2FFF6; /* Text Main */
  border: none;
  margin-right: 15px;
}

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

.page-about__btn-secondary {
  background-color: transparent;
  color: #57E38D; /* Glow */
  border: 2px solid #57E38D; /* Glow */
}

.page-about__btn-secondary:hover {
  background-color: #57E38D;
  color: #08160F; /* Background */
  transform: translateY(-2px);
}

.page-about__cta-section {
  text-align: center;
  padding: 80px 20px;
}

.page-about__cta-content {
  max-width: 800px;
  margin: 0 auto;
}

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

.page-about__faq-section {
  background-color: #08160F; /* Background */
  padding-bottom: 80px;
}

.page-about__faq-list {
  max-width: 900px;
  margin: 40px auto 0;
}

.page-about__faq-item {
  background-color: #11271B; /* Card BG */
  border: 1px solid #2E7A4E; /* Border */
  border-radius: 8px;
  margin-bottom: 15px;
  overflow: hidden;
}

.page-about__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  font-size: 1.1em;
  font-weight: bold;
  color: #F2FFF6; /* Text Main */
  cursor: pointer;
  transition: background-color 0.3s ease;
  list-style: none; /* For details summary */
}

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

.page-about__faq-question:hover {
  background-color: #0A4B2C; /* Deep Green */
}

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

.page-about__faq-item[open] .page-about__faq-toggle {
  content: '−';
}

.page-about__faq-answer {
  padding: 0 25px 20px;
  font-size: 0.95em;
  color: #A7D9B8; /* Text Secondary */
  line-height: 1.6;
}

.page-about__faq-answer p {
  margin-top: 0;
  margin-bottom: 10px;
  color: #A7D9B8; /* Text Secondary */
}

/* --- Responsive Styles --- */
@media (max-width: 1024px) {
  .page-about__flex-container {
    flex-direction: column;
    text-align: center;
  }

  .page-about__flex-container--reverse {
    flex-direction: column;
  }

  .page-about__content-column,
  .page-about__image-column {
    width: 100%;
  }

  .page-about__section-title {
    text-align: center;
  }

  .page-about__sub-title {
    text-align: center;
  }

  .page-about__mission-list,
  .page-about__support-list {
    text-align: left;
    margin-left: auto;
    margin-right: auto;
    max-width: 600px; /* Giới hạn chiều rộng cho danh sách */
  }

  .page-about__cta-buttons {
    flex-direction: column;
    gap: 15px;
  }

  .page-about__btn-primary,
  .page-about__btn-secondary {
    margin-right: 0;
    width: 100%;
    max-width: 350px;
    margin-left: auto;
    margin-right: auto;
  }
}

@media (max-width: 768px) {
  .page-about__hero-section {
    padding: 10px 15px 40px;
  }

  .page-about__main-title {
    font-size: clamp(2em, 8vw, 2.5em) !important;
  }

  .page-about__hero-description {
    font-size: 1em !important;
  }

  .page-about__section {
    padding: 40px 15px !important;
  }

  .page-about__section-title {
    font-size: clamp(1.5em, 6vw, 2em) !important;
    margin-bottom: 20px !important;
  }

  .page-about__text-block {
    font-size: 0.95em !important;
  }

  .page-about__sub-title {
    font-size: 1.3em !important;
    margin-top: 20px !important;
    margin-bottom: 10px !important;
  }

  .page-about__features-grid,
  .page-about__responsible-grid {
    grid-template-columns: 1fr !important;
    gap: 20px !important;
  }

  .page-about__card {
    padding: 25px !important;
    min-height: unset !important; /* Cho phép chiều cao tự động */
  }

  .page-about__card-title {
    font-size: 1.2em !important;
  }

  .page-about__card-description {
    font-size: 0.9em !important;
  }

  .page-about__btn-primary,
  .page-about__btn-secondary {
    padding: 12px 20px !important;
    font-size: 0.95em !important;
    max-width: 100% !important; /* Đảm bảo nút không tràn */
    width: 100% !important;
  }

  .page-about__cta-buttons {
    flex-direction: column !important;
    gap: 15px !important;
    padding-left: 15px !important;
    padding-right: 15px !important;
  }

  .page-about__faq-question {
    padding: 15px 20px !important;
    font-size: 1em !important;
  }

  .page-about__faq-answer {
    padding: 0 20px 15px !important;
    font-size: 0.9em !important;
  }

  /* Mobile image responsiveness */
  .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__hero-section,
  .page-about__hero-image-wrapper,
  .page-about__cta-section,
  .page-about__faq-section,
  .page-about__faq-item {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
    overflow: hidden !important;
  }
  
  .page-about__hero-content {
    padding-left: 0 !important;
    padding-right: 0 !important;
  }

  /* Ensure no horizontal scroll for elements within main */
  .page-about {
    overflow-x: hidden;
  }
}