.page-about {
  --abt-hero-gradient: linear-gradient(100deg, rgba(6, 6, 24, 0.94) 0%, rgba(11, 10, 26, 0.8) 42%, rgba(30, 42, 90, 0.42) 100%);
  --abt-plate-gradient: linear-gradient(140deg, rgba(0, 229, 255, 0.22) 0%, rgba(232, 195, 106, 0.1) 100%);
  display: block;
}

.page-about .page-about__hero {
  position: relative;
  overflow: hidden;
  background: var(--color-bg-deep);
  padding: 122px 0 56px;
}

.page-about__hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-about__hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.5;
}

.page-about__hero-media::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--abt-hero-gradient);
}

.page-about__hero-plate {
  position: absolute;
  right: -18%;
  top: 12%;
  width: 82%;
  height: 96%;
  background: var(--color-primary);
  opacity: 0.52;
  clip-path: polygon(14% 0, 100% 0, 88% 100%, 0 100%);
  z-index: 1;
}

.page-about__hero-plate::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--abt-plate-gradient);
}

.page-about__hero-inner {
  position: relative;
  z-index: 2;
}

.page-about__hero .breadcrumb {
  margin: 0 0 20px;
}

.page-about__crumb {
  color: var(--color-link);
  text-decoration: none;
  transition: color var(--transition);
}

.page-about__crumb:hover {
  color: var(--color-accent);
}

.page-about__crumb-current {
  color: var(--color-text-dim);
}

.page-about__hero-title {
  margin: 14px 0 18px;
  max-width: 11em;
  font-size: clamp(2.2rem, 6.5vw, 4.4rem);
  font-weight: 700;
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: #fff;
}

.page-about__hero-sub {
  max-width: 44em;
  margin-bottom: 30px;
  color: var(--color-text);
  font-size: 1.0625rem;
  line-height: 1.75;
}

.page-about__hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .page-about__mission {
  padding: 88px 0;
  background: var(--color-bg);
}

.page-about__mission-head {
  max-width: 720px;
  margin-bottom: 48px;
}

.page-about__mission-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.page-about__principle {
  position: relative;
  padding: 28px 24px;
  background: linear-gradient(165deg, var(--color-surface) 0%, var(--color-primary-alt) 140%);
  border-top: 2px solid var(--color-line-accent);
}

.page-about__principle::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  border-style: solid;
  border-width: 0 26px 26px 0;
  border-color: transparent var(--color-accent) transparent transparent;
  opacity: 0.4;
}

.page-about__principle-no {
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.12em;
  color: var(--color-gold);
}

.page-about__principle h3 {
  margin-bottom: 10px;
  color: #fff;
  font-size: 1.375rem;
  line-height: 1.3;
}

.page-about__principle p {
  margin: 0;
  color: var(--color-text-dim);
  line-height: 1.7;
}

.page-about .page-about__timeline {
  padding: 88px 0;
  background: var(--color-bg-deep);
}

.page-about__timeline-head {
  max-width: 720px;
  margin-bottom: 48px;
}

.page-about__timeline-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.page-about__timeline-visual {
  position: relative;
  overflow: hidden;
  background: var(--color-surface);
  border-left: 1px solid var(--color-line);
}

.page-about__timeline-visual img {
  width: 100%;
  height: auto;
  display: block;
  opacity: 0.8;
}

.page-about__timeline-track {
  position: relative;
  padding-left: 28px;
}

.page-about__timeline-track::before {
  content: '';
  position: absolute;
  left: 9px;
  top: 4px;
  bottom: 4px;
  width: 1px;
  background: linear-gradient(180deg, var(--color-accent) 0%, var(--color-line) 24%, var(--color-line) 74%, var(--color-gold) 100%);
  opacity: 0.7;
}

.page-about__titem {
  position: relative;
  margin-bottom: 28px;
}

.page-about__titem:last-child {
  margin-bottom: 0;
}

.page-about__tmarker {
  position: absolute;
  left: -25px;
  top: 8px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.16), 0 0 14px rgba(0, 229, 255, 0.5);
}

.page-about__tcard {
  padding: 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  transition: border-color var(--transition), background var(--transition);
}

.page-about__tcard:hover {
  border-color: var(--color-line-accent);
  background: linear-gradient(160deg, var(--color-surface) 0%, rgba(30, 42, 90, 0.5) 100%);
}

.page-about__tyear,
.page-about__tlabel {
  display: inline-block;
  margin-bottom: 10px;
  padding: 2px 10px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.9375rem;
  letter-spacing: 0.08em;
  background: rgba(232, 195, 106, 0.1);
  border-left: 2px solid var(--color-gold);
  color: var(--color-gold);
}

.page-about__tyear {
  background: rgba(0, 229, 255, 0.08);
  border-left-color: var(--color-accent);
  color: var(--color-accent);
}

.page-about__tcard p {
  margin: 0;
  color: var(--color-text);
  font-size: 0.9375rem;
  line-height: 1.7;
}

.page-about .page-about__stats {
  padding: 88px 0;
  background: var(--color-bg);
}

.page-about__stats-head {
  max-width: 720px;
  margin-bottom: 40px;
}

.page-about__stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 28px;
}

.page-about__stat-card {
  padding: 24px 20px;
  background: var(--color-surface);
  border-left: 2px solid var(--color-accent);
}

.page-about__stat-num {
  font-family: var(--font-mono);
  font-size: clamp(1.9rem, 4vw, 2.75rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: #fff;
}

.page-about__stat-num span {
  margin-left: 4px;
  font-size: 0.55em;
  color: var(--color-accent);
}

.page-about__stat-label {
  margin-top: 8px;
  color: var(--color-text-dim);
  font-size: 0.9375rem;
  line-height: 1.5;
}

.page-about__stat-toggle {
  margin-top: 14px;
}

.page-about__stat-toggle summary {
  display: inline-block;
  cursor: pointer;
  list-style: none;
  border-bottom: 1px dashed var(--color-link);
  color: var(--color-link);
  font-size: 0.875rem;
  transition: color var(--transition), border-color var(--transition);
}

.page-about__stat-toggle summary::-webkit-details-marker {
  display: none;
}

.page-about__stat-toggle[open] summary {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.page-about__stat-toggle p {
  margin: 12px 0 0;
  color: var(--color-text-dim);
  font-size: 0.875rem;
  line-height: 1.65;
}

.page-about__stats-extra {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding-top: 20px;
  border-top: 1px solid var(--color-line);
}

.page-about__chip {
  display: inline-block;
  padding: 6px 12px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text);
  background: rgba(0, 229, 255, 0.07);
  border: 1px solid var(--color-line-accent);
}

.page-about .page-about__awards {
  padding: 88px 0;
  background: var(--color-bg-deep);
}

.page-about__awards-head {
  max-width: 720px;
  margin-bottom: 48px;
}

.page-about__awards-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.page-about__awards-visual {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--color-line);
  background: var(--color-surface);
}

.page-about__awards-visual img {
  width: 100%;
  height: auto;
  display: block;
  opacity: 0.75;
}

.page-about__awards-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about__award-item {
  position: relative;
  padding: 24px;
  background: var(--color-surface);
  border-top: 2px solid var(--color-gold);
}

.page-about__award-icon {
  width: 40px;
  height: 40px;
  margin-bottom: 16px;
  color: var(--color-gold);
}

.page-about__award-icon svg {
  width: 100%;
  height: 100%;
}

.page-about__award-item h3 {
  margin-bottom: 8px;
  color: #fff;
  font-size: 1.125rem;
  line-height: 1.4;
}

.page-about__award-item>p {
  margin: 0 0 12px;
  color: var(--color-text-dim);
  font-size: 0.9375rem;
  line-height: 1.7;
}

.page-about__award-details {
  margin-top: 4px;
}

.page-about__award-details summary {
  display: inline-block;
  cursor: pointer;
  list-style: none;
  border-bottom: 1px dashed var(--color-link);
  color: var(--color-link);
  font-size: 0.875rem;
  transition: color var(--transition), border-color var(--transition);
}

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

.page-about__award-details[open] summary {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.page-about__award-details p {
  margin: 12px 0 0;
  color: var(--color-text-dim);
  font-size: 0.875rem;
  line-height: 1.65;
}

.page-about .page-about__closing {
  position: relative;
  overflow: hidden;
  padding: 88px 0;
  background: var(--color-bg);
}

.page-about__closing-band {
  position: absolute;
  left: -10%;
  bottom: -25%;
  width: 72%;
  height: 130%;
  background: var(--color-primary);
  opacity: 0.32;
  clip-path: polygon(0 0, 100% 0, 78% 100%, 0 100%);
}

.page-about__closing-inner {
  position: relative;
  z-index: 2;
}

.page-about__closing-inner .section-heading {
  margin-bottom: 16px;
}

.page-about__closing-inner>p {
  max-width: 560px;
  margin-bottom: 28px;
  color: var(--color-text);
  line-height: 1.7;
}

.page-about__closing-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

@media (min-width: 768px) {
  .page-about .page-about__hero {
    padding-top: 148px;
    padding-bottom: 76px;
  }

  .page-about__hero-plate {
    width: 70%;
    right: -12%;
    top: 8%;
  }

  .page-about__mission-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about__stats-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
  }

  .page-about__awards-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .page-about__hero {
    min-height: 620px;
  }

  .page-about__hero-inner {
    padding-bottom: 92px;
  }

  .page-about__hero-plate {
    width: 60%;
    right: -8%;
  }

  .page-about__timeline-layout {
    grid-template-columns: 5fr 7fr;
    gap: 40px;
    align-items: stretch;
  }

  .page-about__timeline-visual {
    min-height: 420px;
  }

  .page-about__timeline-visual img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  .page-about__awards-layout {
    grid-template-columns: 5fr 7fr;
    gap: 40px;
    align-items: stretch;
  }

  .page-about__awards-visual {
    min-height: 420px;
  }

  .page-about__awards-visual img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
}