.page-about {
  background-color: #08160F; /* Nền tối theo yêu cầu */
  color: #F2FFF6; /* Chữ sáng trên nền tối */
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
}

.page-about__hero-section {
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 60px 20px;
  padding-top: 10px; /* Nhỏ hơn so với --header-offset của body */
  text-align: center;
  background-color: #0A4B2C; /* Deep Green */
  overflow: hidden;
}

.page-about__hero-image-wrapper {
  width: 100%;
  max-width: 1920px;
  margin-bottom: 30px;
}

.page-about__hero-image {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 10px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

.page-about__hero-content {
  max-width: 900px;
  margin: 0 auto;
  z-index: 1;
}

.page-about__main-title {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 700;
  color: #F2C14E; /* Gold */
  margin-bottom: 20px;
  line-height: 1.2;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.page-about__hero-description {
  font-size: 1.1rem;
  margin-bottom: 30px;
  color: #F2FFF6;
}

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

.page-about__btn-primary,
.page-about__btn-secondary {
  display: inline-block;
  padding: 14px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.3s ease;
  max-width: 100%;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
  text-align: center;
}

.page-about__btn-primary {
  background: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
  color: #ffffff;
  border: none;
  box-shadow: 0 4px 15px rgba(34, 199, 104, 0.4);
}

.page-about__btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(34, 199, 104, 0.6);
}

.page-about__btn-secondary {
  background: transparent;
  color: #2AD16F;
  border: 2px solid #2AD16F;
}

.page-about__btn-secondary:hover {
  background: rgba(42, 209, 111, 0.1);
  transform: translateY(-3px);
}

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

.page-about__dark-section {
  background-color: #11271B; /* Card BG color */
  padding: 60px 20px;
  margin-bottom: 20px;
  border-radius: 10px;
}

.page-about__section-title {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  color: #F2C14E; /* Gold */
  text-align: center;
  margin-bottom: 40px;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.page-about__sub-title {
  font-size: clamp(1.4rem, 2.5vw, 1.8rem);
  font-weight: 600;
  color: #2AD16F; /* Button top color */
  margin-bottom: 15px;
}

.page-about__paragraph {
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 20px;
  color: #F2FFF6;
}

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

@media (min-width: 768px) {
  .page-about__section-grid {
    grid-template-columns: 1fr 1fr;
  }
  .page-about__section-grid--reverse {
    grid-template-columns: 1fr 1fr;
    grid-template-areas: "text image";
  }
  .page-about__section-grid--reverse .page-about__text-block { grid-area: text; }
  .page-about__section-grid--reverse .page-about__image-block { grid-area: image; }
}

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

.page-about__image-full {
  width: 100%;
  height: auto;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-about__service-list,
.page-about__security-list,
.page-about__advantage-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.page-about__service-item,
.page-about__security-item,
.page-about__advantage-item {
  background-color: #0A4B2C; /* Deep Green */
  border: 1px solid #2E7A4E; /* Border */
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 15px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
  color: #A7D9B8; /* Text Secondary */
}

.page-about__service-item p,
.page-about__security-item p,
.page-about__advantage-item p {
  color: #A7D9B8;
  margin-bottom: 0;
}

.page-about__cta-bottom {
  text-align: center;
  margin-top: 50px;
}

.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: 8px;
  margin-bottom: 15px;
  overflow: hidden;
  color: #F2FFF6;
}

.page-about__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 25px;
  cursor: pointer;
  font-size: 1.15rem;
  font-weight: 600;
  color: #F2C14E; /* Gold */
  background-color: #0A4B2C; /* Deep Green */
  border-bottom: 1px solid #2E7A4E;
}

.page-about__faq-item[open] .page-about__faq-question {
  border-bottom: 1px solid #2E7A4E;
}

.page-about__faq-qtext {
  flex-grow: 1;
  color: #F2C14E;
}

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

.page-about__faq-answer {
  padding: 15px 25px;
  font-size: 1rem;
  color: #A7D9B8; /* Text Secondary */
}

.page-about__faq-answer p {
  margin-bottom: 0;
  color: #A7D9B8;
}

.page-about__contact-section {
  text-align: center;
  background-color: #08160F;
  padding: 60px 20px;
}

.page-about__contact-info {
  margin-top: 30px;
  font-size: 1.1rem;
  color: #A7D9B8;
}

.page-about__contact-info p {
  margin-bottom: 10px;
}

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

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

/* Responsive Styles */
@media (max-width: 768px) {
  .page-about {
    font-size: 16px;
    line-height: 1.6;
  }

  .page-about__hero-section,
  .page-about__dark-section,
  .page-about__content-area,
  .page-about__contact-section {
    padding: 30px 15px;
  }

  .page-about__hero-image-wrapper {
    margin-bottom: 20px;
  }

  .page-about__main-title {
    font-size: 2rem;
    margin-bottom: 15px;
  }

  .page-about__hero-description {
    font-size: 1rem;
    margin-bottom: 25px;
  }

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

  .page-about__btn-primary,
  .page-about__btn-secondary {
    width: 100% !important;
    padding: 12px 20px;
  }

  .page-about__section-title {
    font-size: 1.8rem;
    margin-bottom: 30px;
  }

  .page-about__sub-title {
    font-size: 1.2rem;
  }

  .page-about__section-grid {
    grid-template-columns: 1fr;
  }

  .page-about__service-item,
  .page-about__security-item,
  .page-about__advantage-item {
    padding: 15px;
    margin-bottom: 10px;
  }

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

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

  /* Mobile image responsiveness */
  .page-about img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }
  
  .page-about__hero-section,
  .page-about__content-area,
  .page-about__dark-section,
  .page-about__contact-section,
  .page-about__image-block,
  .page-about__text-block,
  .page-about__cta-buttons,
  .page-about__faq-list,
  .page-about__faq-item,
  .page-about__hero-image-wrapper {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    /* padding-left and padding-right are handled by section/area padding */
    overflow: hidden !important;
  }
  
  .page-about__hero-section {
    padding-top: 10px !important;
  }
}