.page-about {
  --about-hero-padding: 48px;
}

.page-about .about-hero {
  position: relative;
  isolation: isolate;
  background: var(--black);
  color: var(--white);
  overflow: hidden;
  padding-top: var(--about-hero-padding);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 46%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  background:
    linear-gradient(135deg, transparent 38%, rgba(0, 230, 118, 0.14) 38%, rgba(0, 230, 118, 0.14) 40%, transparent 40%),
    linear-gradient(135deg, transparent 68%, rgba(0, 136, 204, 0.1) 68%, rgba(0, 136, 204, 0.1) 70%, transparent 70%);
  background-size: 48px 48px;
  transform: skewX(-14deg);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: -8%;
  bottom: 32%;
  width: 38%;
  height: 1px;
  pointer-events: none;
  z-index: 0;
  background: linear-gradient(90deg, var(--tech-blue), transparent);
  transform: rotate(-18deg);
  opacity: 0.45;
}

.page-about .about-hero__head {
  position: relative;
  z-index: 1;
}

.page-about .about-hero__title {
  margin: 18px 0 0;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(2.4rem, 6vw, 4.4rem);
  line-height: 1.08;
  letter-spacing: 0.01em;
  max-width: 980px;
}

.page-about .about-hero__name {
  color: var(--vivid-green);
  position: relative;
  white-space: nowrap;
}

.page-about .about-hero__name::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 4px;
  background: linear-gradient(90deg, var(--vivid-green), transparent);
}

.page-about .about-hero__lead {
  margin: 20px 0 0;
  max-width: 72ch;
  color: rgba(255, 255, 255, 0.76);
  font-size: 1.05rem;
  line-height: 1.7;
}

.page-about .about-hero__stats {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 40px;
}

.page-about .about-hero__stat {
  border-left: 3px solid var(--vivid-green);
  background: rgba(255, 255, 255, 0.04);
  padding: 16px 18px;
  display: grid;
  gap: 6px;
}

.page-about .about-hero__stat-num {
  font-family: var(--font-data);
  font-size: 1.7rem;
  font-weight: 700;
  color: var(--vivid-green);
  line-height: 1;
}

.page-about .about-hero__stat-label {
  font-size: 0.85rem;
  color: var(--silver);
  letter-spacing: 0.04em;
}

.page-about .about-hero__visual {
  position: relative;
  z-index: 0;
  margin-top: 32px;
  min-height: 320px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}

.page-about .about-toc {
  background: var(--dark-gray);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  position: relative;
  z-index: 2;
}

.page-about .about-toc__list {
  list-style: none;
  margin: 0;
  padding: 12px 0;
  display: flex;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-about .about-toc__list::-webkit-scrollbar {
  display: none;
}

.page-about .about-toc__list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  padding: 8px 14px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: var(--white);
  text-decoration: none;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  transition: border-color var(--duration) var(--ease-out), background var(--duration) var(--ease-out), color var(--duration) var(--ease-out);
}

.page-about .about-toc__list a span {
  font-family: var(--font-data);
  color: var(--vivid-green);
  font-size: 0.78rem;
}

.page-about .about-toc__list a:hover {
  border-color: var(--vivid-green);
  background: rgba(0, 230, 118, 0.1);
}

.page-about .about-chapter {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  padding: 72px 0;
}

.page-about .about-chapter__index {
  display: flex;
}

.page-about .about-chapter__index-box {
  display: inline-flex;
  align-items: stretch;
  flex-shrink: 0;
  background: var(--primary-green);
  color: var(--white);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
}

.page-about .about-chapter__index-num {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--vivid-green);
  color: var(--black);
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 1.35rem;
  padding: 12px 18px;
}

.page-about .about-chapter__index-text {
  padding: 10px 16px 10px 12px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.1;
  letter-spacing: 0.06em;
}

.page-about .about-chapter__body {
  min-width: 0;
}

.page-about .about-story {
  background: var(--light-gray);
  color: var(--black);
}

.page-about .about-story__content {
  display: grid;
  gap: 24px;
  margin-top: 32px;
}

.page-about .about-story__text p {
  margin: 0 0 16px;
  line-height: 1.75;
  color: rgba(11, 11, 11, 0.82);
  max-width: 72ch;
}

.page-about .about-story__mission {
  background: var(--primary-green);
  color: var(--white);
  padding: 24px 26px;
  display: grid;
  gap: 10px;
  align-content: start;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
}

.page-about .about-story__mission-label {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.14em;
  color: var(--vivid-green);
  text-transform: uppercase;
}

.page-about .about-story__mission p {
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.9);
}

.page-about .about-story__facts {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.page-about .about-story__fact {
  background: var(--white);
  border-top: 3px solid var(--primary-green);
  padding: 18px 16px;
  display: grid;
  gap: 6px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
}

.page-about .about-story__fact-num {
  font-family: var(--font-data);
  font-size: 1.65rem;
  font-weight: 700;
  color: var(--primary-green);
  line-height: 1;
}

.page-about .about-story__fact-label {
  font-size: 0.85rem;
  color: rgba(11, 11, 11, 0.6);
}

.page-about .about-journey {
  background: var(--black);
  color: var(--white);
  position: relative;
}

.page-about .about-journey::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(115deg, transparent 0 60%, rgba(0, 136, 204, 0.06) 60% 76%, transparent 76%);
}

.page-about .about-journey__figure {
  margin: 36px 0 0;
}

.page-about .about-journey__visual {
  min-height: 260px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
}

.page-about .about-journey__caption {
  margin-top: 10px;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
}

.page-about .about-journey__timeline {
  list-style: none;
  margin: 40px 0 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-about .about-journey__item {
  position: relative;
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 14px;
}

.page-about .about-journey__item::before {
  content: "";
  position: absolute;
  left: 20px;
  top: 42px;
  bottom: -18px;
  width: 2px;
  background: linear-gradient(180deg, var(--vivid-green), rgba(0, 230, 118, 0.1));
}

.page-about .about-journey__item:last-child::before {
  display: none;
}

.page-about .about-journey__marker {
  position: relative;
  z-index: 1;
  width: 40px;
  height: 40px;
  background: var(--dark-gray);
  color: var(--vivid-green);
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 0.85rem;
  line-height: 40px;
  text-align: center;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
}

.page-about .about-journey__details {
  border: 1px solid rgba(255, 255, 255, 0.14);
  padding: 16px 20px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
  transition: background var(--duration) var(--ease-out), border-color var(--duration) var(--ease-out);
}

.page-about .about-journey__details[open] {
  background: rgba(10, 92, 54, 0.28);
  border-color: rgba(0, 230, 118, 0.4);
}

.page-about .about-journey__details summary {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 8px 14px;
  cursor: pointer;
  list-style: none;
}

.page-about .about-journey__details summary::-webkit-details-marker,
.page-about .honor-card summary::-webkit-details-marker {
  display: none;
}

.page-about .about-journey__phase {
  font-family: var(--font-data);
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  color: var(--vivid-green);
  text-transform: uppercase;
}

.page-about .about-journey__summary-text {
  font-family: var(--font-heading);
  font-size: 1.12rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-about .about-journey__toggle {
  margin-left: auto;
  font-family: var(--font-data);
  font-size: 1.2rem;
  color: var(--vivid-green);
  transition: transform var(--duration) var(--ease-out);
}

.page-about .about-journey__details[open] .about-journey__toggle {
  transform: rotate(45deg);
}

.page-about .about-journey__details p {
  margin: 16px 0 0;
  max-width: 72ch;
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.7;
}

.page-about .about-team {
  background: var(--primary-green);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.page-about .about-team::after {
  content: "";
  position: absolute;
  right: -6%;
  bottom: -10%;
  width: 32%;
  height: 60%;
  pointer-events: none;
  background: linear-gradient(135deg, transparent 45%, rgba(0, 230, 118, 0.12) 45%, rgba(0, 230, 118, 0.12) 50%, transparent 50%);
  background-size: 28px 28px;
  transform: skewX(-12deg);
}

.page-about .about-team__roles {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 36px;
}

.page-about .about-team__role {
  background: rgba(255, 255, 255, 0.08);
  border-top: 3px solid var(--vivid-green);
  padding: 18px 16px 22px;
  display: grid;
  gap: 10px;
  align-content: start;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
}

.page-about .about-team__role-code {
  display: inline-block;
  width: max-content;
  font-family: var(--font-data);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--black);
  background: var(--vivid-green);
  padding: 4px 8px;
  clip-path: polygon(0 0, 100% 0, calc(100% - 6px) 100%, 0 100%);
}

.page-about .about-team__role-title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.page-about .about-team__role-desc {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.78);
}

.page-about .about-team__network {
  margin: 36px 0 0;
}

.page-about .about-team__network-visual {
  min-height: 300px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
}

.page-about .about-team__network-caption {
  margin-top: 10px;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.7);
}

.page-about .about-team__note {
  margin-top: 28px;
  background: rgba(0, 0, 0, 0.2);
  border-left: 3px solid var(--vivid-green);
  padding: 20px 22px;
  display: grid;
  gap: 8px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
}

.page-about .about-team__note-key {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.16em;
  color: var(--vivid-green);
  text-transform: uppercase;
}

.page-about .about-team__note p {
  margin: 0;
  max-width: 64ch;
  color: rgba(255, 255, 255, 0.82);
  line-height: 1.7;
}

.page-about .about-honors {
  background: var(--dark-gray);
  color: var(--white);
}

.page-about .about-honors__grid {
  display: grid;
  gap: 16px;
  margin-top: 36px;
}

.page-about .honor-card {
  background: #151515;
  border: 1px solid rgba(255, 255, 255, 0.14);
  position: relative;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
  transition: border-color var(--duration) var(--ease-out), transform var(--duration) var(--ease-out);
}

.page-about .honor-card:hover {
  border-color: rgba(0, 230, 118, 0.42);
  transform: translateY(-2px);
}

.page-about .honor-card__flip.summary-hover .honor-card__face, 
.page-about .honor-card:hover .honor-card__face {
  background: rgba(0, 230, 118, 0.04);
}

.page-about .honor-card summary {
  display: grid;
  gap: 12px;
  padding: 24px 20px;
  cursor: pointer;
  list-style: none;
}

.page-about .honor-card__glyph {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  background: rgba(0, 230, 118, 0.1);
  border: 1px solid rgba(0, 230, 118, 0.32);
  color: var(--vivid-green);
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  clip-path: polygon(50% 0, 100% 25%, 100% 75%, 50% 100%, 0 75%, 0 25%);
}

.page-about .honor-card__title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--white);
  line-height: 1.3;
}

.page-about .honor-card__meta {
  font-size: 0.8rem;
  color: var(--silver);
}

.page-about .honor-card__back {
  padding: 0 20px 24px;
  border-top: 1px dashed rgba(255, 255, 255, 0.2);
}

.page-about .honor-card__back p {
  margin: 16px 0 0;
  color: rgba(255, 255, 255, 0.78);
  line-height: 1.7;
  max-width: 46ch;
}

.page-about .about-join {
  background: var(--black);
  color: var(--white);
}

.page-about .about-join__box {
  position: relative;
  background: linear-gradient(135deg, var(--primary-green) 0%, var(--black) 78%);
  border-left: 3px solid var(--vivid-green);
  padding: 40px 28px;
  display: grid;
  gap: 24px;
  margin-top: 32px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%);
}

.page-about .about-join__text p {
  margin: 0;
  max-width: 64ch;
  color: rgba(255, 255, 255, 0.82);
  line-height: 1.75;
}

.page-about .about-join__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

@media (min-width: 768px) {
  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, 1fr);
    max-width: 760px;
  }

  .page-about .about-toc__list {
    justify-content: center;
  }

  .page-about .about-story__content {
    grid-template-columns: 1.2fr 300px;
  }

  .page-about .about-story__text {
    grid-column: 1;
  }

  .page-about .about-story__mission {
    grid-column: 2;
    grid-row: 1;
  }

  .page-about .about-story__facts {
    grid-column: 1 / -1;
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .about-journey__item {
    grid-template-columns: 64px 1fr;
  }

  .page-about .about-journey__marker {
    width: 48px;
    height: 48px;
    line-height: 48px;
  }

  .page-about .about-team__roles {
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
  }

  .page-about .about-honors__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .page-about .about-join__box {
    grid-template-columns: 1fr auto;
    align-items: center;
    padding: 48px 44px;
  }
}

@media (min-width: 1024px) {
  .page-about .about-chapter {
    grid-template-columns: 140px 1fr;
    gap: 48px;
    padding: 96px 0;
  }

  .page-about .about-chapter__index {
    position: sticky;
    top: calc(var(--header-height) + 24px);
    align-self: start;
  }

  .page-about .about-chapter__index-box {
    width: 120px;
    display: flex;
    flex-direction: column;
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
  }

  .page-about .about-chapter__index-num {
    justify-content: flex-start;
    padding: 28px 18px 10px;
  }

  .page-about .about-chapter__index-text {
    padding: 8px 18px 28px;
  }

  .page-about .about-journey__figure {
    display: grid;
    grid-template-columns: 1fr 0.8fr;
    gap: 28px;
    align-items: center;
  }

  .page-about .about-journey__caption {
    margin-top: 0;
  }

  .page-about .about-team__network {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 28px;
    align-items: center;
  }

  .page-about .about-team__network-caption {
    margin-top: 0;
  }
}