.page-about {
  background-color: var(--color-deep-space);
  color: var(--color-ice-white);
  overflow-x: hidden;
}

.page-about img {
  max-width: 100%;
  height: auto;
  display: block;
}

.page-about__hero {
  position: relative;
  padding: 28px 0 48px;
  overflow: hidden;
  background:
    radial-gradient(circle at 12% 18%, rgba(197, 255, 61, 0.08) 0%, transparent 42%),
    radial-gradient(circle at 88% 28%, rgba(139, 229, 255, 0.12) 0%, transparent 46%);
}

.page-about__hero-crystal {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.page-about__hero-container {
  position: relative;
  z-index: 1;
}

.page-about__breadcrumb {
  margin-bottom: 24px;
}

.page-about__hero-frame {
  position: relative;
  padding: 36px 24px;
  background: linear-gradient(160deg, rgba(11, 30, 63, 0.96), rgba(10, 20, 40, 0.92));
  border: 1px solid rgba(139, 229, 255, 0.35);
  clip-path: polygon(0 0, calc(100% - 28px) 0, 100% 28px, 100% 100%, 28px 100%, 0 calc(100% - 28px));
}

.page-about__eyebrow {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--color-neon-green);
  font-family: var(--font-data);
  background: rgba(197, 255, 61, 0.1);
  padding: 6px 12px;
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 0 100%);
  margin-bottom: 16px;
}

.page-about__hero-frame h1 {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(28px, 5vw, 46px);
  line-height: 1.22;
  color: var(--color-ice-white);
  margin: 0 0 16px;
  letter-spacing: 0.02em;
}

.page-about__lead {
  max-width: 680px;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(234, 246, 255, 0.82);
  margin: 0 0 28px;
}

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

.page-about__hero-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin: 28px 0 0;
}

.page-about__hero-stats div {
  background: rgba(11, 30, 63, 0.72);
  border: 1px solid rgba(139, 229, 255, 0.22);
  padding: 16px 12px;
  text-align: center;
}

.page-about__hero-stats dt {
  font-size: 12px;
  color: rgba(234, 246, 255, 0.66);
  margin-bottom: 6px;
}

.page-about__hero-stats dd {
  margin: 0;
  font-family: var(--font-data);
  font-size: 28px;
  font-weight: 700;
  color: var(--color-neon-green);
}

.page-about__index {
  border-top: 1px solid rgba(139, 229, 255, 0.18);
  border-bottom: 1px solid rgba(139, 229, 255, 0.18);
  background: rgba(11, 30, 63, 0.5);
}

.page-about__index-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about__index-list a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 12px;
  color: var(--color-ice-white);
  text-decoration: none;
  border-right: 1px solid rgba(139, 229, 255, 0.14);
  border-bottom: 1px solid rgba(139, 229, 255, 0.14);
  transition: background 0.3s;
  font-weight: 700;
  font-size: 14px;
}

.page-about__index-list a:hover {
  background: rgba(197, 255, 61, 0.08);
}

.page-about__index-num {
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 12px;
  color: var(--color-neon-green);
}

.page-about__timeline-section {
  padding: 56px 0 40px;
  position: relative;
}

.page-about__section-head {
  max-width: 760px;
  margin-bottom: 36px;
}

.page-about__section-head .section-heading {
  color: var(--color-neon-green);
  margin-bottom: 8px;
}

.page-about__section-head h2 {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(24px, 3.4vw, 34px);
  line-height: 1.28;
  color: var(--color-ice-white);
  margin: 0 0 12px;
}

.page-about__section-desc {
  font-size: 15px;
  line-height: 1.8;
  color: rgba(234, 246, 255, 0.68);
  margin: 0;
}

.page-about__timeline-grid {
  display: grid;
  gap: 32px;
}

.page-about__timeline-main {
  min-width: 0;
}

.page-about__timeline {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about__timeline::before {
  content: "";
  position: absolute;
  left: 13px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(180deg, var(--color-neon-green) 0%, rgba(139, 229, 255, 0.5) 50%, var(--color-neon-green) 100%);
}

.page-about__milestone {
  position: relative;
  padding: 0 0 20px 44px;
  list-style: none;
}

.page-about__milestone:last-child {
  padding-bottom: 0;
}

.page-about__milestone::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  width: 28px;
  height: 28px;
  background: var(--color-night-flight);
  border: 2px solid var(--color-neon-green);
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
  transition: background 0.3s, transform 0.3s;
}

.page-about__milestone:hover::before {
  background: var(--color-neon-green);
  transform: rotate(45deg);
}

.page-about__milestone-card {
  position: relative;
  background: var(--color-ice-white);
  color: var(--color-night-flight);
  padding: 18px 20px;
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
}

.page-about__milestone-year {
  font-family: var(--font-data);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--color-slate-gray);
  margin: 0 0 4px;
}

.page-about__milestone-card h3 {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 18px;
  color: var(--color-deep-space);
  margin: 0 0 8px;
}

.page-about__milestone-card > p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-slate-gray);
  margin: 0;
}

.page-about__milestone-detail {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px dashed rgba(10, 20, 40, 0.2);
}

.page-about__milestone-detail summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-data);
  font-size: 13px;
  font-weight: 700;
  color: var(--color-deep-space);
}

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

.page-about__milestone-detail summary::after {
  content: "+";
  font-family: var(--font-data);
  color: var(--color-neon-green);
  font-weight: 700;
  font-size: 15px;
}

.page-about__milestone-detail[open] summary::after {
  content: "–";
}

.page-about__milestone-detail p {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-slate-gray);
}

.page-about__timeline-aside {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-about__stat-panel {
  background: var(--color-night-flight);
  border: 1px solid rgba(139, 229, 255, 0.24);
  padding: 20px 16px;
  text-align: center;
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%);
}

.page-about__stat-num {
  display: block;
  font-family: var(--font-data);
  font-size: 36px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--color-neon-green);
}

.page-about__stat-label {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  color: rgba(234, 246, 255, 0.76);
}

.page-about__timeline-fig {
  margin: 0;
  border: 1px solid rgba(139, 229, 255, 0.3);
  padding: 8px;
  background: var(--color-night-flight);
}

.page-about__timeline-fig figcaption {
  padding: 8px 4px 2px;
  font-size: 12px;
  color: rgba(234, 246, 255, 0.6);
  text-align: center;
}

.page-about__process-section {
  background: var(--color-ice-white);
  color: var(--color-deep-space);
  padding: 56px 0;
}

.page-about__process-section .section-heading {
  color: var(--color-deep-space);
  margin-bottom: 8px;
}

.page-about__process-section h2 {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(24px, 3.4vw, 34px);
  line-height: 1.28;
  color: var(--color-deep-space);
  margin: 0 0 12px;
}

.page-about__process-section .page-about__section-desc {
  color: var(--color-slate-gray);
}

.page-about__process-grid {
  display: grid;
  gap: 32px;
}

.page-about__process-steps {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about__step {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 18px 18px 18px 16px;
  background: #ffffff;
  border: 1px solid rgba(10, 20, 40, 0.08);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
}

.page-about__step-seq {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  font-family: var(--font-data);
  font-size: 13px;
  font-weight: 700;
  color: var(--color-deep-space);
  background: var(--color-neon-green);
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 0 100%);
}

.page-about__step-body h3 {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 16px;
  color: var(--color-deep-space);
  margin: 0 0 6px;
}

.page-about__step-body p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-slate-gray);
  margin: 0;
}

.page-about__process-note {
  margin-top: 16px;
  font-family: var(--font-data);
  font-size: 13px;
  color: var(--color-deep-space);
  background: rgba(197, 255, 61, 0.25);
  display: inline-block;
  padding: 10px 14px;
  letter-spacing: 0.04em;
}

.page-about__process-media {
  min-width: 0;
}

.page-about__process-frame {
  margin: 0;
  padding: 10px;
  background: var(--color-night-flight);
  border: 1px solid rgba(139, 229, 255, 0.3);
}

.page-about__process-frame figcaption {
  padding: 10px 4px 2px;
  font-size: 12px;
  color: rgba(234, 246, 255, 0.72);
}

.page-about__team-section {
  padding: 56px 0;
}

.page-about__team-hero {
  display: grid;
  gap: 24px;
  margin-bottom: 28px;
}

.page-about__team-info .section-heading {
  color: var(--color-neon-green);
  margin-bottom: 8px;
}

.page-about__team-info h2 {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(24px, 3.4vw, 34px);
  line-height: 1.28;
  color: var(--color-ice-white);
  margin: 0 0 12px;
}

.page-about__team-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.page-about__team-metrics div {
  background: var(--color-night-flight);
  border: 1px solid rgba(139, 229, 255, 0.24);
  padding: 12px 16px;
  display: flex;
  align-items: baseline;
  gap: 6px;
  font-size: 13px;
  color: rgba(234, 246, 255, 0.72);
}

.page-about__team-metrics .data-text {
  font-family: var(--font-data);
  font-size: 22px;
  font-weight: 700;
  color: var(--color-neon-green);
}

.page-about__team-figure {
  margin: 0;
  border: 1px solid rgba(139, 229, 255, 0.3);
  padding: 10px;
  background: var(--color-night-flight);
}

.page-about__team-figure figcaption {
  padding: 8px 4px 2px;
  font-size: 12px;
  color: rgba(234, 246, 255, 0.6);
}

.page-about__team-cards {
  display: grid;
  gap: 14px;
}

.page-about__dept-card {
  background: var(--color-night-flight);
  border: 1px solid rgba(139, 229, 255, 0.22);
  padding: 22px 20px;
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
  transition: border-color 0.3s;
}

.page-about__dept-card:hover {
  border-color: var(--color-neon-green);
}

.page-about__dept-num {
  font-family: var(--font-data);
  font-size: 13px;
  font-weight: 700;
  color: var(--color-neon-green);
  display: block;
  margin-bottom: 12px;
}

.page-about__dept-card h3 {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 17px;
  color: var(--color-ice-white);
  margin: 0 0 8px;
}

.page-about__dept-card p {
  font-size: 13px;
  line-height: 1.7;
  color: rgba(234, 246, 255, 0.7);
  margin: 0;
}

.page-about__eco-section {
  background: var(--color-night-flight);
  padding: 56px 0;
  border-top: 4px solid var(--color-neon-green);
}

.page-about__eco-grid {
  display: grid;
  gap: 32px;
}

.page-about__eco-main .section-heading {
  color: var(--color-neon-green);
  margin-bottom: 8px;
}

.page-about__eco-main h2 {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(24px, 3.4vw, 34px);
  line-height: 1.28;
  color: var(--color-ice-white);
  margin: 0 0 12px;
}

.page-about__eco-list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about__eco-list li {
  position: relative;
  padding-left: 24px;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(234, 246, 255, 0.82);
}

.page-about__eco-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 10px;
  height: 10px;
  background: var(--color-neon-green);
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
}

.page-about__eco-nums {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.page-about__eco-num-card {
  background: var(--color-deep-space);
  border: 1px solid var(--color-neon-green);
  padding: 28px 16px;
  text-align: center;
}

.page-about__eco-value {
  display: block;
  font-family: var(--font-data);
  font-size: 44px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--color-neon-green);
}

.page-about__eco-label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  color: rgba(234, 246, 255, 0.74);
}

.page-about__explore {
  padding: 48px 0 64px;
}

.page-about__explore .section-heading {
  color: var(--color-neon-green);
  margin-bottom: 24px;
}

.page-about__explore-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about__explore-card {
  display: block;
  text-decoration: none;
  background: rgba(11, 30, 63, 0.72);
  border: 1px solid rgba(139, 229, 255, 0.2);
  padding: 24px 20px;
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
  transition: background 0.3s, border-color 0.3s;
}

.page-about__explore-card:hover {
  background: rgba(11, 30, 63, 1);
  border-color: var(--color-neon-green);
}

.page-about__explore-arrow {
  display: inline-block;
  font-size: 18px;
  color: var(--color-neon-green);
  margin-bottom: 14px;
}

.page-about__explore-card h3 {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 17px;
  color: var(--color-ice-white);
  margin: 0 0 8px;
}

.page-about__explore-card p {
  font-size: 13px;
  line-height: 1.7;
  color: rgba(234, 246, 255, 0.68);
  margin: 0;
}

@media (min-width: 640px) {
  .page-about__team-cards {
    grid-template-columns: 1fr 1fr;
  }

  .page-about__explore-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 768px) {
  .page-about__index-list {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about__index-list a {
    border-bottom: none;
  }

  .page-about__hero-stats {
    grid-template-columns: repeat(4, 1fr);
    margin-top: 40px;
  }
}

@media (min-width: 992px) {
  .page-about__timeline-grid {
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 48px;
  }

  .page-about__process-grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 48px;
    align-items: center;
  }

  .page-about__team-hero {
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 48px;
  }

  .page-about__team-cards {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about__eco-grid {
    grid-template-columns: 1.4fr 0.6fr;
    gap: 48px;
    align-items: center;
  }

  .page-about__explore-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}