:root {
  --page-about-background-color: #08160F;
  --page-about-card-bg-color: #11271B;
  --page-about-text-main-color: #F2FFF6;
  --page-about-text-secondary-color: #A7D9B8;
  --page-about-border-color: #2E7A4E;
  --primary-color: #11A84E; /* Main brand color */
  --secondary-color: #22C768; /* Secondary brand color */
  --button-gradient: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
  --glow-color: #57E38D;
  --gold-color: #F2C14E;
  --divider-color: #1E3A2A;
  --deep-green-color: #0A4B2C;
}

.page-about {
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
  color: var(--page-about-text-main-color);
  background-color: var(--page-about-background-color);
}

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

.page-about__section-title {
  font-size: 2.5em;
  color: var(--page-about-text-main-color);
  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-color: var(--primary-color);
  border-radius: 2px;
}

.page-about__section-description {
  font-size: 1.1em;
  color: var(--page-about-text-secondary-color);
  text-align: center;
  margin-bottom: 50px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.page-about__hero-section {
  position: relative;
  width: 100%;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: 10px; 
  padding-bottom: 60px;
  background-color: var(--page-about-background-color);
}

.page-about__hero-image {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  position: absolute;
  top: 0;
  left: 0;
  z-index: 0;
  opacity: 0.2;
  filter: none !important;
}

.page-about__hero-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
  padding: 40px 20px;
  background: rgba(0, 0, 0, 0.6);
  border-radius: 10px;
  margin-top: 40px;
  box-shadow: 0 0 20px rgba(0,0,0,0.5);
}

.page-about__main-title {
  font-size: clamp(2.2em, 4vw, 3.5em);
  color: var(--page-about-text-main-color);
  margin-bottom: 20px;
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: 1px;
}

.page-about__intro-text {
  font-size: 1.2em;
  color: var(--page-about-text-secondary-color);
  margin-bottom: 30px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.page-about__cta-button {
  display: inline-block;
  padding: 15px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  font-size: 1.1em;
  transition: all 0.3s ease;
  background: var(--button-gradient);
  color: #ffffff;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-about__cta-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
  opacity: 0.9;
}

.page-about__cta-button--secondary {
  background: none;
  border: 2px solid var(--primary-color);
  color: var(--primary-color);
}

.page-about__cta-button--secondary:hover {
  background: var(--primary-color);
  color: #ffffff;
}

.page-about__mission-vision,
.page-about__history-achievements,
.page-about__safety-responsibility,
.page-about__technology-experience,
.page-about__future-vision,
.page-about__conclusion-cta {
  padding: 80px 0;
}

.page-about__dark-section {
  background-color: var(--page-about-background-color);
  color: var(--page-about-text-main-color);
}

.page-about__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.page-about__card {
  background-color: var(--page-about-card-bg-color);
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
  text-align: center;
  color: var(--page-about-text-main-color);
  border: 1px solid var(--page-about-border-color);
}

.page-about__card-title {
  font-size: 1.8em;
  color: var(--page-about-text-main-color);
  margin-bottom: 15px;
}

.page-about__card p {
  color: var(--page-about-text-secondary-color);
  margin-bottom: 20px;
}

.page-about__card-image {
  max-width: 100%;
  height: auto;
  min-width: 200px;
  min-height: 200px;
  border-radius: 8px;
  margin-top: 20px;
  display: block;
  margin-left: auto;
  margin-right: auto;
  filter: none !important;
}

.page-about__core-values,
.page-about__products-services,
.page-about__team-culture,
.page-about__customer-support,
.page-about__faq-section {
  padding: 80px 0;
  background-color: #ffffff;
  color: #333333;
}

.page-about__core-values .page-about__section-title,
.page-about__core-values .page-about__section-description,
.page-about__team-culture .page-about__section-title,
.page-about__team-culture .page-about__section-description,
.page-about__products-services .page-about__section-title,
.page-about__products-services .page-about__section-description,
.page-about__customer-support .page-about__section-title,
.page-about__customer-support .page-about__section-description,
.page-about__faq-section .page-about__section-title {
  color: #333333;
}

.page-about__core-values .page-about__section-title::after,
.page-about__team-culture .page-about__section-title::after,
.page-about__products-services .page-about__section-title::after,
.page-about__customer-support .page-about__section-title::after,
.page-about__faq-section .page-about__section-title::after {
  background-color: var(--primary-color);
}

.page-about__values-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.page-about__value-item {
  background-color: #f8f8f8;
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  text-align: center;
  border-left: 5px solid var(--primary-color);
}

.page-about__value-title {
  font-size: 1.5em;
  color: var(--primary-color);
  margin-bottom: 15px;
}

.page-about__value-item p {
  color: #555555;
}

.page-about__history-timeline {
  display: flex;
  flex-direction: column;
  position: relative;
  padding: 40px 0;
  margin-top: 50px;
}

.page-about__history-timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 4px;
  background-color: var(--page-about-divider-color);
  transform: translateX(-50%);
}

.page-about__timeline-item {
  display: flex;
  align-items: center;
  margin-bottom: 50px;
  position: relative;
  width: 50%;
  padding: 20px 0;
}

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

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

.page-about__timeline-item::before {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  background-color: var(--primary-color);
  border-radius: 50%;
  border: 4px solid var(--page-about-background-color);
  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: 1.8em;
  color: var(--page-about-text-main-color);
  font-weight: bold;
  margin-bottom: 10px;
}

.page-about__timeline-item p {
  color: var(--page-about-text-secondary-color);
}

.page-about__history-image {
  max-width: 100%;
  height: auto;
  min-width: 200px;
  min-height: 200px;
  border-radius: 10px;
  margin-top: 40px;
  display: block;
  margin-left: auto;
  margin-right: auto;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
  filter: none !important;
}

.page-about__team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.page-about__team-member {
  background-color: #f8f8f8;
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  text-align: center;
}

.page-about__team-photo {
  width: 150px;
  height: 150px;
  min-width: 200px;
  min-height: 200px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 20px auto;
  border: 4px solid var(--primary-color);
  filter: none !important;
}

.page-about__member-name {
  font-size: 1.5em;
  color: #333333;
  margin-bottom: 5px;
}

.page-about__member-role {
  font-size: 1em;
  color: #777777;
}

.page-about__culture-text {
  margin-top: 40px;
  font-style: italic;
  color: #555555;
  text-align: center;
}

.page-about__safety-responsibility .page-about__info-block {
  text-align: left;
}

.page-about__info-title {
  font-size: 1.8em;
  color: var(--page-about-text-main-color);
  margin-bottom: 15px;
}

.page-about__info-block p {
  color: var(--page-about-text-secondary-color);
  margin-bottom: 20px;
}

.page-about__info-image {
  max-width: 100%;
  height: auto;
  min-width: 200px;
  min-height: 200px;
  border-radius: 8px;
  margin-top: 20px;
  display: block;
  filter: none !important;
}

.page-about__product-list {
  list-style: none;
  padding: 0;
  margin-top: 50px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.page-about__product-item {
  background-color: #f8f8f8;
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  text-align: center;
  border-bottom: 5px solid var(--primary-color);
}

.page-about__product-title {
  font-size: 1.6em;
  color: var(--primary-color);
  margin-bottom: 15px;
}

.page-about__product-item p {
  color: #555555;
}

.page-about__tech-image {
  max-width: 100%;
  height: auto;
  min-width: 200px;
  min-height: 200px;
  border-radius: 10px;
  margin-top: 40px;
  margin-bottom: 30px;
  display: block;
  margin-left: auto;
  margin-right: auto;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
  filter: none !important;
}

.page-about__tech-features {
  list-style: none;
  padding: 0;
  margin-top: 30px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.page-about__feature-item {
  background-color: var(--page-about-card-bg-color);
  padding: 20px;
  border-radius: 8px;
  color: var(--page-about-text-main-color);
  display: flex;
  align-items: center;
  border: 1px solid var(--page-about-border-color);
}

.page-about__feature-item::before {
  content: '✓';
  color: var(--primary-color);
  font-size: 1.5em;
  margin-right: 10px;
  font-weight: bold;
}

.page-about__support-channels {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.page-about__channel-item {
  background-color: #f8f8f8;
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  text-align: center;
  border-top: 5px solid var(--primary-color);
}

.page-about__channel-title {
  font-size: 1.6em;
  color: var(--primary-color);
  margin-bottom: 15px;
}

.page-about__channel-item p {
  color: #555555;
}

.page-about__future-image {
  max-width: 100%;
  height: auto;
  min-width: 200px;
  min-height: 200px;
  border-radius: 10px;
  margin-top: 40px;
  margin-bottom: 30px;
  display: block;
  margin-left: auto;
  margin-right: auto;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
  filter: none !important;
}

.page-about__faq-list {
  max-width: 900px;
  margin: 50px auto 0 auto;
}

.page-about__faq-item {
  background-color: #f8f8f8;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  margin-bottom: 15px;
  overflow: hidden;
  color: #333333;
}

.page-about__faq-item summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  cursor: pointer;
  font-size: 1.2em;
  font-weight: bold;
  color: var(--primary-color);
  background-color: #eaf7ed;
  list-style: none;
}

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

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

.page-about__faq-toggle {
  font-size: 1.5em;
  line-height: 1;
  margin-left: 15px;
}

.page-about__faq-answer {
  padding: 20px 25px;
  background-color: #ffffff;
  color: #555555;
  border-top: 1px solid #e0e0e0;
}

.page-about__conclusion-cta {
  text-align: center;
  padding: 80px 0;
  background-color: var(--page-about-background-color);
}

.page-about__conclusion-cta .page-about__section-title {
  font-size: 2.8em;
  color: var(--page-about-text-main-color);
}

.page-about__conclusion-cta .page-about__section-description {
  font-size: 1.2em;
  color: var(--page-about-text-secondary-color);
  margin-bottom: 40px;
}

@media (max-width: 1024px) {
  .page-about__hero-content {
    padding: 30px 20px;
  }
  .page-about__main-title {
    font-size: clamp(2em, 5vw, 3em);
  }
  .page-about__intro-text {
    font-size: 1.1em;
  }
  .page-about__section-title {
    font-size: 2em;
  }
  .page-about__section-description {
    font-size: 1em;
  }
  .page-about__grid,
  .page-about__values-list,
  .page-about__team-grid,
  .page-about__product-list,
  .page-about__tech-features,
  .page-about__support-channels {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  }
}

@media (max-width: 768px) {
  .page-about__hero-section {
    padding-bottom: 40px;
  }
  .page-about__hero-content {
    margin-top: 20px;
    padding: 25px 15px;
  }
  .page-about__main-title {
    font-size: clamp(1.8em, 6vw, 2.5em);
  }
  .page-about__intro-text {
    font-size: 1em;
  }
  .page-about__section-title {
    font-size: 1.8em;
    margin-bottom: 30px;
  }
  .page-about__section-description {
    font-size: 0.95em;
    margin-bottom: 30px;
  }
  .page-about__mission-vision,
  .page-about__core-values,
  .page-about__history-achievements,
  .page-about__team-culture,
  .page-about__safety-responsibility,
  .page-about__products-services,
  .page-about__technology-experience,
  .page-about__customer-support,
  .page-about__future-vision,
  .page-about__faq-section,
  .page-about__conclusion-cta {
    padding: 50px 0;
  }

  .page-about img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }
  
  .page-about__container,
  .page-about__card,
  .page-about__value-item,
  .page-about__team-member,
  .page-about__info-block,
  .page-about__product-item,
  .page-about__feature-item,
  .page-about__channel-item,
  .page-about__faq-item {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !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;
  }
  .page-about__video-section,
  .page-about__video-container,
  .page-about__video-wrapper {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
    overflow: hidden !important;
  }
  .page-about__video-section {
    padding-top: 10px !important;
  }

  .page-about__cta-button,
  .page-about__btn-primary,
  .page-about__btn-secondary,
  .page-about a[class*="button"],
  .page-about a[class*="btn"] {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
    padding-left: 15px;
    padding-right: 15px;
    text-align: center;
  }
  .page-about__cta-buttons,
  .page-about__button-group,
  .page-about__btn-container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
    flex-wrap: wrap !important;
    gap: 10px;
    display: flex;
    flex-direction: column;
  }

  .page-about__history-timeline {
    align-items: flex-start;
    padding-left: 20px;
  }
  .page-about__history-timeline::before {
    left: 18px;
    transform: translateX(0);
  }
  .page-about__timeline-item {
    width: 100%;
    padding-left: 40px;
    padding-right: 0;
    text-align: left;
    margin-bottom: 30px;
  }
  .page-about__timeline-item:nth-child(odd),
  .page-about__timeline-item:nth-child(even) {
    align-self: flex-start;
    padding-left: 40px;
    padding-right: 0;
    text-align: left;
  }
  .page-about__timeline-item::before {
    left: 8px;
    right: auto;
  }
  .page-about__timeline-item:nth-child(odd)::before,
  .page-about__timeline-item:nth-child(even)::before {
    left: 8px;
    right: auto;
  }
}