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

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

.page-about__hero-section {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  min-height: 500px;
  text-align: center;
  padding: 10px 0 60px 0; /* body handles padding-top, this is for visual spacing */
  overflow: hidden;
}

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

.page-about__hero-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
  padding: 40px 20px;
  background: rgba(17, 39, 27, 0.85); /* Card BG with transparency */
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  margin-top: 60px; /* Space from header */
}

.page-about__main-title {
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 700;
  line-height: 1.2;
  color: #F2FFF6; /* Text Main */
  margin-bottom: 20px;
  letter-spacing: 0.5px;
}

.page-about__hero-description {
  font-size: 18px;
  line-height: 1.6;
  color: #A7D9B8; /* Text Secondary */
  margin-bottom: 30px;
}

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

.page-about__btn-primary,
.page-about__btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 30px;
  border-radius: 8px;
  font-size: 18px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  white-space: nowrap;
  word-wrap: break-word;
  box-sizing: border-box;
  max-width: 100%;
}

.page-about__btn-primary {
  background: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
  color: #F2FFF6; /* Text Main */
  border: none;
  box-shadow: 0 4px 15px rgba(19, 153, 74, 0.4);
}

.page-about__btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-2px);
}

.page-about__btn-secondary {
  background: transparent;
  color: #57E38D; /* Glow */
  border: 2px solid #2E7A4E; /* Border */
  box-shadow: 0 0 10px rgba(87, 227, 141, 0.3);
}

.page-about__btn-secondary:hover {
  background: rgba(87, 227, 141, 0.1);
  transform: translateY(-2px);
}

.page-about__section-title {
  font-size: clamp(24px, 3.5vw, 40px);
  font-weight: 700;
  color: #F2FFF6; /* Text Main */
  text-align: center;
  margin-bottom: 40px;
  position: relative;
  padding-bottom: 15px;
}

.page-about__section-title::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, #11A84E, #22C768);
  border-radius: 2px;
}

.page-about__text-block {
  font-size: 17px;
  line-height: 1.7;
  color: #A7D9B8; /* Text Secondary */
  text-align: center;
  margin-bottom: 30px;
}

.page-about__mission-vision-section, .page-about__history-section, .page-about__security-section, .page-about__responsibility-section, .page-about__team-tech-section, .page-about__future-section, .page-about__cta-section, .page-about__faq-section {
  padding: 80px 0;
}

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

.page-about__card {
  background-color: #11271B; /* Card BG */
  border: 1px solid #2E7A4E; /* Border */
  border-radius: 12px;
  padding: 30px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-about__card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.page-about__card-title {
  font-size: 24px;
  font-weight: 600;
  color: #F2FFF6; /* Text Main */
  margin-bottom: 15px;
  text-align: center;
}

.page-about__card-text {
  font-size: 16px;
  line-height: 1.7;
  color: #A7D9B8; /* Text Secondary */
  text-align: justify;
}

.page-about__image-full-width {
  width: 100%;
  height: auto;
  border-radius: 12px;
  margin-top: 40px;
  object-fit: cover;
}

.page-about__timeline {
  position: relative;
  padding: 40px 0;
  margin-top: 20px;
}

.page-about__timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  width: 4px;
  height: 100%;
  background-color: #1E3A2A; /* Divider */
  transform: translateX(-50%);
}

.page-about__timeline-item {
  position: relative;
  width: 50%;
  padding: 20px 0;
}

.page-about__timeline-item:nth-child(odd) {
  left: 0;
  padding-right: 40px;
  text-align: right;
}

.page-about__timeline-item:nth-child(even) {
  left: 50%;
  padding-left: 40px;
  text-align: left;
}

.page-about__timeline-item::before {
  content: '';
  position: absolute;
  top: 50%;
  width: 20px;
  height: 20px;
  background-color: #22C768; /* Auxiliary color */
  border: 3px solid #11A84E; /* Main color */
  border-radius: 50%;
  transform: translateY(-50%);
  z-index: 1;
}

.page-about__timeline-item:nth-child(odd)::before {
  right: -10px;
}

.page-about__timeline-item:nth-child(even)::before {
  left: -10px;
}

.page-about__timeline-year {
  font-size: 20px;
  font-weight: 600;
  color: #F2FFF6; /* Text Main */
  margin-bottom: 10px;
}

.page-about__timeline-description {
  font-size: 16px;
  line-height: 1.6;
  color: #A7D9B8; /* Text Secondary */
}

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

.page-about__service-item {
  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);
  transition: transform 0.3s ease;
}

.page-about__service-item:hover {
  transform: translateY(-5px);
}

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

.page-about__service-title {
  font-size: 22px;
  font-weight: 600;
  color: #F2FFF6; /* Text Main */
  margin-bottom: 15px;
}

.page-about__service-description {
  font-size: 15px;
  line-height: 1.6;
  color: #A7D9B8; /* Text Secondary */
  margin-bottom: 20px;
}

.page-about__btn-link {
  display: inline-block;
  color: #57E38D; /* Glow */
  text-decoration: none;
  font-weight: 600;
  font-size: 16px;
  border-bottom: 2px solid #11A84E;
  padding-bottom: 5px;
  transition: color 0.3s ease, border-color 0.3s ease;
}

.page-about__btn-link:hover {
  color: #F2C14E; /* Gold */
  border-color: #F2C14E;
}

.page-about__cta-bottom {
  text-align: center;
  margin-top: 60px;
}

.page-about__security-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-about__feature-item {
  background-color: #0A4B2C; /* Deep Green */
  border-radius: 10px;
  padding: 25px;
  text-align: center;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.page-about__feature-title {
  font-size: 20px;
  font-weight: 600;
  color: #F2FFF6; /* Text Main */
  margin-bottom: 10px;
}

.page-about__feature-description {
  font-size: 15px;
  line-height: 1.6;
  color: #A7D9B8; /* Text Secondary */
}

.page-about__responsibility-list {
  list-style: none;
  padding: 0;
  margin: 40px auto 0 auto;
  max-width: 800px;
}

.page-about__responsibility-list li {
  background-color: #11271B; /* Card BG */
  border-left: 5px solid #22C768; /* Auxiliary color */
  margin-bottom: 15px;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.page-about__responsibility-list li p {
  margin: 0;
  font-size: 16px;
  line-height: 1.7;
  color: #A7D9B8; /* Text Secondary */
  text-align: left;
}

.page-about__responsibility-list li strong {
  color: #F2FFF6; /* Text Main */
}

.page-about__grid-team-tech {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-about__faq-list {
  max-width: 900px;
  margin: 40px auto 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: 18px;
  font-weight: 600;
  color: #F2FFF6; /* Text Main */
  cursor: pointer;
  background-color: #0A4B2C; /* Deep Green */
  border-bottom: 1px solid transparent; /* default */
  transition: background-color 0.3s ease;
  list-style: none;
}

.page-about__faq-item[open] > .page-about__faq-question {
  border-bottom-color: #2E7A4E;
}

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

.page-about__faq-question:hover {
  background-color: #11A84E;
}

.page-about__faq-toggle {
  font-size: 24px;
  line-height: 1;
  color: #57E38D; /* Glow */
  transition: transform 0.3s ease;
}

.page-about__faq-item[open] .page-about__faq-toggle {
  transform: rotate(45deg);
}

.page-about__faq-answer {
  padding: 0 25px 20px 25px;
  font-size: 16px;
  line-height: 1.7;
  color: #A7D9B8; /* Text Secondary */
}

.page-about__faq-answer p {
  margin: 0;
}

.page-about__cta-section {
  text-align: center;
  padding-top: 60px;
  padding-bottom: 80px;
}

/* Responsive Styles */
@media (max-width: 1024px) {
  .page-about__hero-content {
    padding: 30px 15px;
  }
  .page-about__main-title {
    font-size: clamp(26px, 4.5vw, 40px);
  }
  .page-about__hero-description {
    font-size: 16px;
  }
  .page-about__section-title {
    font-size: clamp(22px, 3.8vw, 36px);
  }
  .page-about__timeline-item:nth-child(odd) {
    padding-right: 20px;
  }
  .page-about__timeline-item:nth-child(even) {
    padding-left: 20px;
  }
}

@media (max-width: 768px) {
  .page-about__container {
    padding: 0 15px;
  }
  .page-about__hero-section {
    min-height: 400px;
    padding-bottom: 40px;
  }
  .page-about__hero-content {
    margin-top: 40px;
  }
  .page-about__main-title {
    font-size: 28px;
  }
  .page-about__hero-description {
    font-size: 15px;
  }
  .page-about__hero-cta, .page-about__cta-buttons {
    flex-direction: column;
    gap: 15px;
  }
  .page-about__btn-primary, .page-about__btn-secondary {
    width: 100% !important;
    max-width: 100% !important;
    padding: 12px 20px;
    font-size: 16px;
    white-space: normal !important;
    word-wrap: break-word !important;
  }
  .page-about__mission-vision-section, .page-about__history-section, .page-about__security-section, .page-about__responsibility-section, .page-about__team-tech-section, .page-about__future-section, .page-about__cta-section, .page-about__faq-section {
    padding: 40px 0;
  }
  .page-about__section-title {
    font-size: 26px;
    margin-bottom: 30px;
  }
  .page-about__text-block {
    font-size: 15px;
    margin-bottom: 20px;
  }
  .page-about__grid, .page-about__grid-services, .page-about__security-features, .page-about__grid-team-tech {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .page-about__card {
    padding: 25px;
  }
  .page-about__card-title {
    font-size: 20px;
  }
  .page-about__card-text {
    font-size: 15px;
  }
  .page-about__timeline::before {
    left: 20px;
  }
  .page-about__timeline-item {
    width: 100%;
    padding-left: 60px;
    padding-right: 0;
    text-align: left;
  }
  .page-about__timeline-item:nth-child(odd) {
    padding-right: 0;
  }
  .page-about__timeline-item:nth-child(even) {
    left: 0;
  }
  .page-about__timeline-item::before {
    left: 10px;
  }
  .page-about__timeline-year {
    font-size: 18px;
  }
  .page-about__timeline-description {
    font-size: 14px;
  }
  .page-about__service-image {
    height: 180px;
  }
  .page-about__service-title {
    font-size: 20px;
  }
  .page-about__service-description {
    font-size: 14px;
  }
  .page-about__faq-question {
    padding: 15px 20px;
    font-size: 16px;
  }
  .page-about__faq-answer {
    padding: 0 20px 15px 20px;
    font-size: 14px;
  }
  /* All images must be responsive */
  .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 {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }
  .page-about__hero-section {
    padding-top: 10px !important;
  }
  .page-about__video-section {
    padding-top: 10px !important; /* body already has padding-top */
  }
  .page-about__video-container, .page-about__video-wrapper {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    overflow: hidden !important;
    padding-left: 15px;
    padding-right: 15px;
  }
  .page-about video, .page-about__video {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }
}