.page-about {
  color: #ffffff; /* Default text color for dark body background */
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
}

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

.page-about__hero-section {
  position: relative;
  padding: 120px 0 60px; /* Adjust padding-top for header offset */
  background-color: #0a0a0a; /* Ensure dark background for hero */
  color: #ffffff;
  text-align: center;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.page-about__hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)); /* Dark overlay for text readability */
  z-index: 1;
}

.page-about__hero-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

.page-about__hero-title {
  font-size: 3.2em;
  margin-bottom: 20px;
  color: #FFFFFF;
  position: relative;
  z-index: 2;
  font-weight: bold;
}

.page-about__hero-description {
  font-size: 1.2em;
  margin-bottom: 30px;
  color: #f0f0f0;
  position: relative;
  z-index: 2;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.page-about__btn-primary,
.page-about__btn-secondary {
  display: inline-block;
  padding: 14px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  transition: all 0.3s ease;
  position: relative;
  z-index: 2;
  margin: 10px;
  cursor: pointer;
}

.page-about__btn-primary {
  background-color: #26A9E0;
  color: #ffffff;
  border: 2px solid #26A9E0;
}

.page-about__btn-primary:hover {
  background-color: #1a8cc2;
  border-color: #1a8cc2;
}

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

.page-about__btn-secondary:hover {
  background-color: #FFFFFF;
  color: #26A9E0;
}

.page-about__introduction-section,
.page-about__products-section,
.page-about__technology-section,
.page-about__why-choose-section,
.page-about__contact-section {
  background-color: #FFFFFF;
  color: #333333;
  padding: 80px 0;
}

.page-about__core-values-section,
.page-about__special-service-section,
.page-about__responsibility-section,
.page-about__faq-section {
  background-color: #0a0a0a; /* Dark background from body */
  color: #ffffff;
  padding: 80px 0;
}

.page-about__section-title {
  font-size: 2.5em;
  text-align: center;
  margin-bottom: 20px;
  color: #26A9E0;
}

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

.page-about__section-subtitle {
  font-size: 1.1em;
  text-align: center;
  margin-bottom: 60px;
  color: #555555;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.page-about__section-subtitle--light {
  color: #cccccc;
}

.page-about__content-wrapper {
  display: flex;
  align-items: center;
  gap: 40px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.page-about__content-wrapper--reverse {
  flex-direction: row-reverse;
}

.page-about__text-block {
  flex: 1;
  min-width: 300px;
}

.page-about__text-block p {
  margin-bottom: 15px;
  color: #333333;
}

.page-about__text-block--light p {
  color: #f0f0f0;
}

.page-about__image-content {
  flex: 1;
  min-width: 400px;
  max-width: 600px;
  height: auto;
  border-radius: 10px;
  object-fit: cover;
}

.page-about__values-grid,
.page-about__products-grid,
.page-about__tech-grid,
.page-about__responsibility-grid,
.page-about__advantages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.page-about__value-card,
.page-about__product-card,
.page-about__tech-item,
.page-about__responsibility-item,
.page-about__advantage-card {
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  padding: 30px;
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  color: #ffffff;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.page-about__value-card:hover,
.page-about__product-card:hover,
.page-about__tech-item:hover,
.page-about__advantage-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.page-about__product-card,
.page-about__advantage-card {
  background-color: #FFFFFF;
  color: #333333;
  border: 1px solid #e0e0e0;
}

.page-about__product-card .page-about__card-title,
.page-about__advantage-card .page-about__card-title {
  color: #26A9E0;
}

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

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

.page-about__product-card p {
  flex-grow: 1;
  margin-bottom: 20px;
}

.page-about__card-link {
  display: inline-block;
  margin-top: auto;
  color: #26A9E0;
  text-decoration: none;
  font-weight: bold;
  transition: color 0.3s ease;
}

.page-about__card-link:hover {
  color: #1a8cc2;
  text-decoration: underline;
}

.page-about__cta-buttons {
  text-align: center;
  margin-top: 60px;
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.page-about__advantages-grid ul {
  list-style: none;
  padding: 0;
  text-align: left;
}

.page-about__advantages-grid li {
  margin-bottom: 10px;
  position: relative;
  padding-left: 25px;
}

.page-about__advantages-grid li::before {
  content: '✓';
  color: #26A9E0;
  position: absolute;
  left: 0;
  font-weight: bold;
}

.page-about__faq-list {
  max-width: 900px;
  margin: 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: 20px;
  cursor: pointer;
  font-size: 1.1em;
  font-weight: bold;
  color: #ffffff;
  background-color: rgba(38, 169, 224, 0.2); /* Slightly transparent brand color */
  transition: background-color 0.3s ease;
}

.page-about__faq-question:hover {
  background-color: rgba(38, 169, 224, 0.4);
}

.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 20px;
  transition: max-height 0.3s ease, padding 0.3s ease;
  color: #f0f0f0;
  text-align: left;
}

.page-about__faq-item.active .page-about__faq-answer {
  max-height: 1000px !important; /* Sufficiently large value */
  padding: 20px;
  padding-top: 0;
}

.page-about__contact-info {
  text-align: center;
  margin-top: 40px;
  margin-bottom: 40px;
  font-size: 1.1em;
}

.page-about__contact-info p {
  margin-bottom: 10px;
  color: #333333;
}

/* Responsive Styles */
@media (max-width: 1024px) {
  .page-about__hero-title {
    font-size: 2.8em;
  }
  .page-about__section-title {
    font-size: 2em;
  }
  .page-about__content-wrapper {
    flex-direction: column;
  }
  .page-about__image-content {
    min-width: unset;
    width: 100%;
  }
}

@media (max-width: 768px) {
  .page-about__hero-section {
    padding-top: var(--header-offset, 120px) !important; /* Mobile specific header offset */
    padding-bottom: 40px;
  }
  .page-about__hero-title {
    font-size: 2.2em;
  }
  .page-about__hero-description {
    font-size: 1em;
  }
  .page-about__section-title {
    font-size: 1.8em;
  }
  .page-about__section-subtitle {
    font-size: 0.95em;
  }
  .page-about__btn-primary,
  .page-about__btn-secondary {
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
    padding-left: 15px;
    padding-right: 15px;
  }
  .page-about__cta-buttons {
    flex-direction: column;
    gap: 10px;
  }
  .page-about__container {
    padding-left: 15px;
    padding-right: 15px;
  }
  .page-about__image-content,
  .page-about__product-image,
  .page-about__responsibility-image,
  .page-about__advantage-image {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }
  .page-about__introduction-section,
  .page-about__products-section,
  .page-about__technology-section,
  .page-about__why-choose-section,
  .page-about__contact-section,
  .page-about__core-values-section,
  .page-about__special-service-section,
  .page-about__responsibility-section,
  .page-about__faq-section {
    padding: 40px 0;
  }
  .page-about__product-card,
  .page-about__advantage-card,
  .page-about__tech-item,
  .page-about__value-card,
  .page-about__responsibility-item {
    padding: 20px;
  }
  .page-about__text-block p,
  .page-about p,
  .page-about li {
    font-size: 15px;
  }
  .page-about__faq-question {
    font-size: 1em;
    padding: 15px;
  }
  .page-about__faq-answer {
    padding: 0 15px;
  }
  .page-about__faq-item.active .page-about__faq-answer {
    padding: 15px;
    padding-top: 0;
  }
}

@media (max-width: 480px) {
  .page-about__hero-title {
    font-size: 1.8em;
  }
  .page-about__section-title {
    font-size: 1.5em;
  }
}