.page-about {
  --about-rule: #2E3644;
  --about-wm: rgba(237, 241, 247, 0.055);
  --about-wm-strong: rgba(237, 241, 247, 0.095);
  --about-ease: cubic-bezier(0.22, 0.61, 0.36, 1);

  position: relative;
  background: var(--black);
  color: var(--white);
  font-family: var(--font-body);
}

/* ---------- shell ---------- */

.page-about .about-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  padding-top: clamp(92px, 13vw, 148px);
  padding-bottom: clamp(56px, 9vw, 120px);
}

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

.page-about .breadcrumb {
  margin-bottom: clamp(26px, 4vw, 48px);
}

.page-about .about-index {
  display: none;
}

/* ---------- intro ---------- */

.page-about .about-intro {
  position: relative;
  overflow: hidden;
  padding-bottom: clamp(40px, 7vw, 88px);
}

.page-about .about-intro__year {
  position: absolute;
  top: -0.08em;
  right: 0;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(72px, 19vw, 220px);
  line-height: 0.8;
  letter-spacing: -0.06em;
  color: var(--about-wm);
  pointer-events: none;
  user-select: none;
}

.page-about .about-intro__title {
  position: relative;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(36px, 7.2vw, 92px);
  line-height: 0.99;
  letter-spacing: -0.03em;
  margin: 14px 0 clamp(24px, 4vw, 40px);
  text-wrap: balance;
}

.page-about .about-intro__body {
  position: relative;
  max-width: 62ch;
  display: grid;
  gap: 16px;
  font-size: clamp(16px, 1.6vw, 17.5px);
  line-height: 1.78;
  color: var(--white);
}

.page-about .about-intro__body p {
  margin: 0;
}

.page-about .about-intro__body p + p {
  color: var(--muted);
}

.page-about .about-intro__facts {
  position: relative;
  list-style: none;
  margin: clamp(34px, 5vw, 56px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--about-rule);
  border: 1px solid var(--about-rule);
}

.page-about .about-intro__facts li {
  background: var(--panel);
  padding: 18px 20px;
  display: grid;
  gap: 6px;
}

.page-about .about-intro__facts .num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 30px;
  line-height: 1;
  color: var(--green);
  letter-spacing: -0.02em;
}

.page-about .about-intro__fact-cap {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- chapter base ---------- */

.page-about .about-chapter {
  position: relative;
  padding-block: clamp(46px, 7.5vw, 92px);
  border-top: 1px solid var(--about-rule);
}

.page-about .chapter-head {
  max-width: 52ch;
  margin-bottom: clamp(28px, 5vw, 54px);
}

.page-about .chapter-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(28px, 5.2vw, 58px);
  line-height: 1.06;
  letter-spacing: -0.025em;
  margin: 12px 0 14px;
  text-wrap: balance;
}

.page-about .chapter-lead {
  margin: 0;
  color: var(--muted);
  font-size: clamp(15.5px, 1.6vw, 17px);
  line-height: 1.75;
}

/* ---------- timeline ---------- */

.page-about .about-timeline__photo {
  margin: 0 0 clamp(32px, 5vw, 56px);
}

.page-about .timeline {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 6px 0 0 26px;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 10px;
  bottom: 26px;
  width: 2px;
  background: linear-gradient(180deg, var(--green) 0%, var(--violet) 52%, var(--stroke) 100%);
  opacity: 0.85;
}

.page-about .timeline__item {
  position: relative;
  padding-bottom: clamp(30px, 5vw, 54px);
}

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

.page-about .timeline__item::after {
  content: "";
  position: absolute;
  left: -26px;
  top: 12px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--black);
  border: 2px solid var(--green);
  box-shadow: 0 0 0 4px rgba(53, 240, 138, 0.12);
  transition: background-color 300ms var(--about-ease), box-shadow 300ms var(--about-ease);
  z-index: 2;
}

.page-about .timeline__year {
  position: absolute;
  top: -0.16em;
  right: 0;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(48px, 11vw, 116px);
  line-height: 0.8;
  letter-spacing: -0.05em;
  color: var(--about-wm);
  pointer-events: none;
  user-select: none;
  transition: color 320ms var(--about-ease);
}

.page-about .timeline__panel {
  position: relative;
  z-index: 1;
  padding: clamp(22px, 3.4vw, 34px);
  transition: transform 300ms var(--about-ease), border-color 300ms var(--about-ease);
}

.page-about .timeline__panel h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(20px, 3vw, 30px);
  line-height: 1.16;
  letter-spacing: -0.015em;
  margin: 8px 0 12px;
  text-wrap: balance;
}

.page-about .timeline__panel > p {
  margin: 0 0 10px;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .timeline__quote {
  margin: 18px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--violet);
  color: var(--white) !important;
  font-size: 15px !important;
  line-height: 1.7 !important;
  opacity: 0.86;
}

.page-about .timeline__meta {
  margin: 16px 0 0 !important;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  font-size: 13px !important;
  letter-spacing: 0.02em;
  color: var(--muted);
  border-top: 1px dashed rgba(46, 54, 68, 0.9);
  padding-top: 14px;
}

.page-about .timeline__meta b {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 15px;
  color: var(--orange);
  margin-right: 4px;
}

@media (hover: hover) {
  .page-about .timeline__item:hover .timeline__panel {
    transform: translateY(-3px);
    border-color: rgba(53, 240, 138, 0.45);
  }

  .page-about .timeline__item:hover::after {
    background: var(--green);
    box-shadow: 0 0 0 7px rgba(53, 240, 138, 0.16);
  }

  .page-about .timeline__item:hover .timeline__year {
    color: var(--about-wm-strong);
  }
}

/* ---------- team ---------- */

.page-about .about-team__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 4vw, 44px);
}

.page-about .crew-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .crew {
  background: var(--panel);
  border: 1px solid var(--about-rule);
  border-left: 3px solid var(--stroke);
  padding: clamp(18px, 2.6vw, 26px);
  display: grid;
  gap: 8px;
}

.page-about .crew--archive {
  border-left-color: var(--green);
}

.page-about .crew--write {
  border-left-color: var(--violet);
}

.page-about .crew--verify {
  border-left-color: var(--orange);
}

.page-about .crew__name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(18px, 2.4vw, 23px);
  letter-spacing: -0.01em;
  margin: 0;
}

.page-about .crew p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--muted);
}

.page-about .crew__stat {
  margin-top: 4px !important;
  font-size: 12.5px !important;
  letter-spacing: 0.08em;
  color: var(--white) !important;
  opacity: 0.75;
}

.page-about .crew__stat .num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 17px;
  color: var(--green);
  margin-right: 6px;
}

.page-about .crew--write .crew__stat .num {
  color: var(--violet);
}

.page-about .crew--verify .crew__stat .num {
  color: var(--orange);
}

.page-about .about-team__photo {
  margin: 0;
}

/* ---------- standards ---------- */

.page-about .standards-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3.6vw, 40px);
}

.page-about .standards-main {
  padding: clamp(22px, 3.2vw, 34px);
  background: var(--pitch);
  border: 1px solid var(--about-rule);
}

.page-about .standards-main p {
  margin: 0 0 14px;
  font-size: clamp(15.5px, 1.6vw, 17px);
  line-height: 1.8;
}

.page-about .standards-main p:last-child {
  margin-bottom: 0;
}

.page-about .standards-marks {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--about-rule);
  border: 1px solid var(--about-rule);
  align-content: start;
}

.page-about .standards-marks li {
  background: var(--panel);
  padding: 16px 18px;
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  font-size: 14.5px;
  line-height: 1.68;
  color: var(--muted);
}

.page-about .mark {
  display: block;
  width: 18px;
  height: 18px;
  margin-top: 2px;
  border-radius: 3px;
}

.page-about .mark--check {
  background: var(--green);
}

.page-about .mark--triple {
  background: linear-gradient(135deg, var(--violet) 0 50%, var(--layer) 50% 100%);
  border: 1px solid var(--violet);
}

.page-about .mark--track {
  background: transparent;
  border: 2px solid var(--orange);
}

/* ---------- slice ---------- */

.page-about .about-slice {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  margin-block: clamp(34px, 5vw, 60px);
  padding: clamp(20px, 3vw, 30px) clamp(20px, 3vw, 34px);
  border: 1px solid var(--about-rule);
  border-left: 3px solid var(--orange);
  background:
    repeating-linear-gradient(
      135deg,
      rgba(27, 34, 48, 0.55) 0px,
      rgba(27, 34, 48, 0.55) 8px,
      rgba(18, 22, 29, 0.55) 8px,
      rgba(18, 22, 29, 0.55) 16px
    );
}

.page-about .about-slice__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(34px, 6vw, 56px);
  line-height: 0.95;
  color: var(--orange);
  letter-spacing: -0.03em;
}

.page-about .about-slice__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--muted);
  max-width: 52ch;
}

/* ---------- map ---------- */

.page-about .map-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--about-rule);
  border: 1px solid var(--about-rule);
}

.page-about .map-card {
  display: grid;
  gap: 8px;
  padding: clamp(20px, 3vw, 30px);
  background: var(--panel);
  color: inherit;
  text-decoration: none;
  transition: background-color 260ms var(--about-ease);
}

.page-about .map-card__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(28px, 4.4vw, 42px);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--violet);
}

.page-about .map-card__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(17px, 2.2vw, 21px);
  letter-spacing: -0.01em;
  margin: 0;
}

.page-about .map-card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--muted);
}

.page-about .map-card__go {
  margin-top: 6px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--green);
}

@media (hover: hover) {
  .page-about .map-card:hover {
    background: var(--layer);
  }

  .page-about .map-card:hover .map-card__num {
    color: var(--green);
  }
}

/* ---------- network ---------- */

.page-about .network-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 4vw, 44px);
}

.page-about .network-body {
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-about .network-body p {
  margin: 0;
  font-size: clamp(15.5px, 1.6vw, 17px);
  line-height: 1.78;
  color: var(--muted);
}

.page-about .network-body p:first-child {
  color: var(--white);
}

.page-about .network-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 6px !important;
}

.page-about .about-network__photo {
  margin: 0;
}

/* ---------- next ---------- */

.page-about .next-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  max-width: 70ch;
}

.page-about .next-grid p {
  margin: 0;
  font-size: clamp(15.5px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--muted);
}

.page-about .next-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: clamp(26px, 4vw, 40px) 0 0;
}

/* ---------- desktop ---------- */

@media (min-width: 700px) {
  .page-about .about-intro__facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-slice {
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    gap: 24px;
  }

  .page-about .map-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .standards-grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
  }

  .page-about .network-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
  }

  .page-about .timeline {
    padding-left: 34px;
  }

  .page-about .timeline::before {
    left: 7px;
  }

  .page-about .timeline__item::after {
    left: -34px;
  }

  .page-about .timeline__item:nth-child(even) .timeline__panel {
    margin-left: clamp(24px, 7vw, 104px);
  }

  .page-about .timeline__item:nth-child(even) .timeline__year {
    right: clamp(24px, 7vw, 104px);
  }
}

@media (min-width: 1080px) {
  .page-about .about-shell {
    grid-template-columns: minmax(0, 1fr) 190px;
    column-gap: clamp(36px, 5vw, 84px);
    align-items: start;
  }

  .page-about .about-index {
    display: block;
    position: sticky;
    top: calc(var(--header-h) + 36px);
    padding-top: 6px;
  }

  .page-about .about-index__title {
    margin: 0 0 14px;
    font-size: 11px;
    letter-spacing: 0.24em;
    font-weight: 600;
    color: var(--muted);
    padding-bottom: 10px;
    border-bottom: 1px solid var(--about-rule);
  }

  .page-about .about-index__list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 2px;
  }

  .page-about .about-index__link {
    display: block;
    padding: 8px 0 8px 14px;
    border-left: 2px solid var(--stroke);
    font-size: 13.5px;
    line-height: 1.4;
    color: var(--muted);
    text-decoration: none;
    transition: color 220ms var(--about-ease), border-color 220ms var(--about-ease);
  }

  .page-about .about-index__link:hover {
    color: var(--white);
  }

  .page-about .about-index__link[aria-current="true"] {
    color: var(--green);
    border-left-color: var(--green);
  }
}

@media (min-width: 1280px) {
  .page-about .map-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-shell {
    grid-template-columns: minmax(0, 1fr) 210px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .timeline__panel,
  .page-about .timeline__year,
  .page-about .map-card,
  .page-about .about-index__link {
    transition: none;
  }

  .page-about .timeline__item:hover .timeline__panel {
    transform: none;
  }
}