.about-container {
  max-width: 1230px;
  margin: 0 auto;
  padding: 0 40px;
}

.about-hero {
  position: relative;
  height: 300px;
  overflow: hidden;
  background: linear-gradient(135deg, #2878ff 0%, #56a0f5 55%, #a8d4ff 100%);
}

.about-hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
  display: block;
}

.about-hero-inner {
  position: relative;
  z-index: 2;
  max-width: 1230px;
  margin: 0 auto;
  padding: 0 40px;
  height: 100%;
  display: flex;
  align-items: center;
}

.about-hero-text {
  flex: 0 0 auto;
}

.about-hero-title {
  font-size: 38px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
  line-height: 1.2;
}

.about-hero-subtitle {
  font-size: 17px;
  color: rgba(255, 255, 255, 0.9);
  font-weight: 400;
}

.about-intro {
  background: #fff;
  padding: 48px 0 40px;
}

.about-intro-text {
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text);
  margin-bottom: 16px;
}

.about-intro-text:last-child {
  margin-bottom: 0;
}

.about-section-title {
  font-size: 34px;
  font-weight: 700;
  color: var(--color-text);
  text-align: center;
  margin-bottom: 40px;
  line-height: 1.2;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 22px;
}

.about-section-title::before,
.about-section-title::after {
  content: "";
  display: block;
  width: 60px;
  height: 2px;
  background: #dadbe0;
  flex-shrink: 0;
}

.about-section-lead {
  font-size: 16px;
  color: var(--color-text-light);
  text-align: center;
  line-height: 1.7;
  margin-bottom: 2px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.about-mutual .about-section-lead:last-of-type {
  margin-bottom: 0;
}

.about-section-caption {
  font-size: 16px;
  color: var(--color-text-light);
  text-align: center;
  line-height: 1.7;
  margin-top: 0;
}

.about-history {
  position: relative;
  background: #fff;
  padding: 60px 0 72px;
  border-top: 1px solid var(--color-border);
  overflow: hidden;
}

.about-history::before {
  content: "";
  position: absolute;
  inset: 0;
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center center;
  opacity: 1;
  pointer-events: none;
  z-index: 0;
}

.about-history > * {
  position: relative;
  z-index: 1;
}

.about-timeline {
  display: flex;
  flex-direction: column;
}

.about-timeline-row {
  display: flex;
  align-items: flex-start;
  padding: 18px 0;
}

.about-timeline-year {
  flex: 0 0 90px;
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text);
  padding-top: 2px;
  text-align: right;
  padding-right: 32px;
  position: relative;
}

.about-timeline-row:not(:last-child) .about-timeline-year::after {
  display: none;
}

.about-timeline-events {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-left: 20px;
  border-left: 2px solid var(--color-border);
  padding-bottom: 8px;
  position: relative;
}

.about-timeline-event {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 2px 0;
  position: relative;
}

.about-timeline-bullet {
  position: absolute;
  left: -25px;
  top: 8px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #d0d0d0;
  flex-shrink: 0;
}

.about-timeline-event.is-primary .about-timeline-bullet {
  background: var(--color-primary);
  width: 10px;
  height: 10px;
  left: -26px;
  top: 7px;
}

.about-timeline-event-text {
  font-size: 16px;
  line-height: 1.65;
  color: var(--color-text);
}

.about-timeline-event.is-primary .about-timeline-event-text {
  font-weight: 500;
}

.about-mutual {
  background: #ffffff;
  border-top: 1px solid var(--color-border);
}

.about-mutual-visual {
  position: relative;
}

.about-mutual-bg {
  display: block;
  width: 100%;
  height: auto;
}

.about-mutual-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  pointer-events: none;
}

.about-mutual-top {
  padding-top: 32px;
  pointer-events: auto;
}

.about-mutual-bottom {
  padding-bottom: 36px;
  pointer-events: auto;
}

.about-mutual-leads {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  width: 100%;
}

.about-excellence {
  background: #eef4fd;
  padding: 68px 0;
  border-top: 1px solid #d8e6f7;
}

.about-excellence .about-section-title {
  margin-bottom: 48px;
}

.about-excellence-layout {
  display: flex;
  align-items: center;
  gap: 56px;
}

.about-excellence-image {
  flex: 0 0 420px;
}

.about-excellence-image img {
  width: 100%;
  height: auto;
  display: block;
}

.about-excellence-content {
  flex: 1;
  min-width: 0;
}

.about-excellence-list {
  list-style: none;
  padding: 0;
  margin: 0 0 28px 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.about-excellence-list li {
  font-size: 16px;
  line-height: 1.65;
  color: var(--color-text);
  padding-left: 18px;
  position: relative;
}

.about-excellence-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
}

.about-asar-block {
  border-top: 1px solid #d0dff0;
  padding-top: 22px;
}

.about-asar-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.5;
}

.asar-tooltip-wrap {
  position: relative;
  display: inline-block;
}

.asar-trigger {
  color: var(--color-primary);
  text-decoration: underline;
  text-decoration-style: dotted;
  cursor: pointer;
  font-weight: 600;
  background: none;
  border: none;
  padding: 0;
  font-size: inherit;
  font-family: inherit;
  line-height: inherit;
  text-align: left;
}

.asar-trigger:hover,
.asar-trigger:focus {
  color: var(--color-primary-dark);
  outline: none;
}

.asar-tooltip {
  display: none;
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  width: 460px;
  max-width: 90vw;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
  padding: 20px 24px;
  z-index: 500;
}

.asar-tooltip::before {
  content: "";
  position: absolute;
  top: -7px;
  left: 22px;
  width: 12px;
  height: 12px;
  background: #fff;
  border-left: 1px solid var(--color-border);
  border-top: 1px solid var(--color-border);
  transform: rotate(45deg);
}

.asar-tooltip-wrap:hover .asar-tooltip,
.asar-tooltip-wrap:focus-within .asar-tooltip {
  display: block;
  animation: asarFadeIn 0.15s ease;
}

@keyframes asarFadeIn {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.asar-tooltip p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--color-text);
  margin-bottom: 10px;
}

.asar-tooltip p:last-child {
  margin-bottom: 0;
}

.about-ecology {
  background: #fafafa;
  padding: 68px 0 80px;
  border-top: 1px solid var(--color-border);
}

.about-ecology .about-section-title {
  margin-bottom: 48px;
}

.about-ecology-layout {
  display: flex;
  align-items: stretch;
  gap: 20px;
}

.about-ecology-content {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.about-ecology-content p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text);
  background: #fff;
  padding: 16px 20px;
  margin-bottom: 12px;
  border-radius: 4px;
}

.about-ecology-content p:last-child {
  margin-bottom: 0;
}

.about-ecology-image {
  flex: 0 0 440px;
  align-self: stretch;
}

.about-ecology-image img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

@media (max-width: 1024px) {
  .about-container {
    padding: 0 24px;
  }

  .about-hero-inner {
    padding: 0 24px;
  }

  .about-excellence-image {
    flex: 0 0 300px;
  }

  .about-ecology-image {
    flex: 0 0 340px;
  }

  .about-mutual-top {
    padding-top: 22px;
  }

  .about-mutual-bottom {
    padding-bottom: 26px;
  }
}

@media (max-width: 860px) {
  .about-hero {
    height: 220px;
  }

  .about-hero-title {
    font-size: 28px;
  }

  .about-hero-subtitle {
    font-size: 15px;
  }

  .about-section-title {
    font-size: 26px;
  }

  .about-mutual {
    display: none;
  }

  .about-excellence-layout {
    flex-direction: column;
    gap: 32px;
  }

  .about-ecology-layout {
    flex-direction: column-reverse;
    gap: 20px;
  }

  .about-excellence-image {
    flex: 0 0 auto;
    width: 100%;
    max-width: 480px;
    align-self: auto;
  }

  .about-ecology-image {
    flex: 0 0 auto;
    width: 100%;
    max-width: 100%;
    align-self: auto;
  }

  .about-ecology-image img {
    height: auto;
  }

  .about-timeline-year {
    flex: 0 0 70px;
    font-size: 20px;
    padding-right: 20px;
  }

  .asar-tooltip {
    width: calc(100vw - 48px);
  }
}

@media (max-width: 600px) {
  .about-container {
    padding: 0 16px;
  }

  .about-hero {
    height: 150px;
  }

  .about-hero-inner {
    padding: 0 16px;
  }

  .about-hero-title {
    font-size: 22px;
  }

  .about-hero-subtitle {
    font-size: 13px;
  }

  .about-section-title {
    font-size: 20px;
    margin-bottom: 24px;
  }

  .about-intro {
    padding: 28px 0;
  }

  .about-history,
  .about-excellence,
  .about-ecology {
    padding-top: 40px;
    padding-bottom: 40px;
  }

  .about-timeline-year {
    flex: 0 0 50px;
    font-size: 17px;
    padding-right: 12px;
  }

  .about-timeline-event-text,
  .about-intro-text,
  .about-excellence-list li,
  .about-ecology-content p {
    font-size: 14px;
  }

  .asar-tooltip {
    width: calc(100vw - 32px);
    left: 0;
  }

  .about-section-caption,
  .about-section-lead {
    font-size: 13px;
  }

  .about-mutual-top {
    padding-top: 14px;
  }

  .about-mutual-bottom {
    padding-bottom: 16px;
  }
}

.about-history-pattern::before {
  background-image: image-set(
    url("/assets/images/about/about-hero-background-pattern.webp")
      type("image/webp"),
    url("/assets/images/about/about-hero-background-pattern.png")
      type("image/png")
  );
}

.asar-tooltip-close {
  position: absolute;
  top: 8px;
  right: 10px;
  border: 0;
  background: transparent;
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
}

.asar-tooltip:not(.is-open) .asar-tooltip-close {
  display: none;
}