.page-about {
  font-family: 'Arial', sans-serif;
  background-color: #08160F; /* Nền tối theo custom color */
  color: #F2FFF6; /* Màu chữ chính theo custom color */
  line-height: 1.6;
  font-size: 16px;
}

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

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

.page-about__section-title {
  font-size: 3.2em;
  color: #F2FFF6; /* Màu chữ chính */
  text-align: center;
  margin-bottom: 60px;
  font-weight: bold;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.page-about__section-title--light {
  color: #F2FFF6;
}

.page-about__sub-title {
  font-size: 2em;
  color: #F2FFF6;
  margin-top: 40px;
  margin-bottom: 20px;
  font-weight: 600;
}

.page-about__sub-title--light {
  color: #F2FFF6;
}

.page-about__text-link {
  color: #57E38D; /* Glow color */
  text-decoration: none;
  font-weight: bold;
  transition: color 0.3s ease;
}

.page-about__text-link:hover {
  color: #2AD16F;
}

/* Hero Section */
.page-about__hero-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 10px; /* Small top padding as body handles header offset */
  padding-bottom: 80px;
  background-color: #08160F;
  position: relative;
  overflow: hidden;
}

.page-about__hero-image-wrapper {
  width: 100%;
  max-width: 100%;
  overflow: hidden;
  box-sizing: border-box;
}

.page-about__hero-image {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 40px;
}

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

.page-about__main-title {
  font-size: clamp(2.5em, 5vw, 3.8em); /* Sử dụng clamp để H1 không quá lớn trên mobile */
  color: #F2FFF6;
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 20px;
  letter-spacing: -0.03em;
}

.page-about__hero-description {
  font-size: 1.2em;
  color: #A7D9B8; /* Text Secondary */
  margin-bottom: 30px;
}

.page-about__btn-primary {
  display: inline-block;
  padding: 15px 30px;
  background: linear-gradient(180deg, #2AD16F 0%, #13994A 100%); /* Nút màu xanh lá cây */
  color: #ffffff;
  text-decoration: none;
  border-radius: 50px;
  font-weight: bold;
  font-size: 1.1em;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  box-shadow: 0 4px 15px rgba(42, 209, 111, 0.4);
  max-width: 100%;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

.page-about__btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(42, 209, 111, 0.6);
}

/* Mission Vision Section */
.page-about__mission-vision-section {
  background-color: #08160F;
}

.page-about__content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.page-about__card {
  background-color: #11271B; /* Card BG */
  border: 1px solid #2E7A4E; /* Border color */
  border-radius: 12px;
  padding: 30px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
  color: #F2FFF6; /* Text Main */
}

.page-about__card-title {
  font-size: 1.8em;
  color: #F2FFF6;
  margin-bottom: 15px;
  font-weight: 700;
}

.page-about__card p {
  color: #A7D9B8; /* Text Secondary */
  margin-bottom: 15px;
}

/* Why Choose Section */
.page-about__why-choose-section {
  background-color: #0A4B2C; /* Deep Green */
}

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

.page-about__feature-card {
  background-color: #11271B; /* Card BG */
  border: 1px solid #2E7A4E; /* Border */
  border-radius: 12px;
  padding: 25px;
  text-align: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.page-about__feature-image {
  width: 100%;
  max-width: 400px;
  height: auto;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 20px;
}

.page-about__feature-title {
  font-size: 1.5em;
  color: #F2FFF6;
  margin-bottom: 15px;
  font-weight: 600;
}

.page-about__feature-card p {
  color: #A7D9B8;
  flex-grow: 1;
}

/* History Section */
.page-about__history-section {
  background-color: #08160F;
}

.page-about__content-text p {
  color: #A7D9B8;
  margin-bottom: 20px;
  font-size: 1.1em;
}

/* Social Responsibility Section */
.page-about__social-responsibility-section {
  background-color: #0A4B2C;
}

.page-about__content-grid--reverse {
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.page-about__text-content p {
  color: #A7D9B8;
  margin-bottom: 20px;
  font-size: 1.1em;
}

.page-about__image-container {
  display: flex;
  justify-content: center;
  align-items: center;
}

.page-about__responsibility-image {
  width: 100%;
  max-width: 600px;
  height: auto;
  object-fit: cover;
  border-radius: 12px;
}

/* FAQ Section */
.page-about__faq-section {
  background-color: #08160F;
}

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

.page-about__faq-item {
  background-color: #11271B; /* Card BG */
  border: 1px solid #2E7A4E; /* Border */
  border-radius: 10px;
  margin-bottom: 15px;
  overflow: hidden;
}

.page-about__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  font-size: 1.2em;
  font-weight: 600;
  color: #F2FFF6; /* Text Main */
  cursor: pointer;
  list-style: none;
  transition: background-color 0.3s ease;
}

.page-about__faq-question:hover {
  background-color: #1E3A2A; /* Divider color for hover */
}

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

.page-about__faq-qtext {
  flex-grow: 1;
}

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

.page-about__faq-answer {
  padding: 0 25px 20px;
  color: #A7D9B8; /* Text Secondary */
  font-size: 1.1em;
  line-height: 1.6;
}

.page-about__faq-item[open] .page-about__faq-question {
  background-color: #1E3A2A;
}

/* CTA Section */
.page-about__cta-section {
  background-color: #0A4B2C;
  text-align: center;
}

.page-about__cta-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 20px;
}

.page-about__cta-description {
  font-size: 1.2em;
  color: #A7D9B8;
  margin-bottom: 40px;
}

.page-about__cta-button {
  min-width: 250px;
}

/* Responsive styles */
@media (max-width: 1024px) {
  .page-about__section-title {
    font-size: 2.8em;
  }
  .page-about__sub-title {
    font-size: 1.8em;
  }
  .page-about__content-grid {
    grid-template-columns: 1fr;
  }
  .page-about__content-grid--reverse {
    grid-template-columns: 1fr;
  }
  .page-about__image-container {
    order: -1; /* Đẩy ảnh lên đầu trên mobile */
  }
}

@media (max-width: 768px) {
  .page-about__section-padding {
    padding: 60px 0;
  }
  .page-about__section-title {
    font-size: 2.2em;
    margin-bottom: 40px;
  }
  .page-about__sub-title {
    font-size: 1.6em;
  }
  .page-about__hero-section {
    padding-bottom: 60px;
  }
  .page-about__hero-image {
    margin-bottom: 30px;
  }
  .page-about__hero-content {
    padding: 0 15px;
  }
  .page-about__main-title {
    font-size: 2.2em; /* Ensure H1 is not too big on smaller screens */
  }
  .page-about__hero-description {
    font-size: 1em;
  }
  .page-about__btn-primary,
  .page-about__cta-button {
    width: 100% !important;
    max-width: 100% !important;
    padding: 12px 20px;
    font-size: 1em;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
    margin: 10px 0;
  }
  .page-about__container,
  .page-about__hero-content,
  .page-about__cta-content {
    padding-left: 15px !important;
    padding-right: 15px !important;
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }
  .page-about__feature-card {
    padding: 20px;
  }
  .page-about__feature-image {
    max-width: 100% !important;
    height: auto !important;
    display: block !important;
  }
  .page-about__responsibility-image {
    max-width: 100% !important;
    height: auto !important;
    display: block !important;
  }
  .page-about img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }
  .page-about__faq-question {
    font-size: 1.1em;
    padding: 15px 20px;
  }
  .page-about__faq-answer {
    font-size: 1em;
    padding: 0 20px 15px;
  }
  .page-about__faq-list,
  .page-about__cta-content {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }
  .page-about__hero-image-wrapper,
  .page-about__image-container,
  .page-about__grid-features,
  .page-about__content-grid {
    max-width: 100% !important;
    width: 100% !important;
    overflow: hidden !important;
    box-sizing: border-box !important;
  }
  .page-about__cta-section .page-about__cta-button {
    width: auto !important; /* Allow button to shrink if text is short */
    max-width: 100% !important;
  }
}

@media (max-width: 480px) {
  .page-about__section-title {
    font-size: 1.8em;
  }
  .page-about__main-title {
    font-size: 1.8em;
  }
  .page-about__sub-title {
    font-size: 1.4em;
  }
  .page-about__faq-question {
    font-size: 1em;
  }
  .page-about__cta-description {
    font-size: 1em;
  }
}