.page-about {
  --tl-x: clamp(9px, 2vw, 20px);
  --tl-pad: clamp(34px, 6vw, 78px);
  --hair: rgba(169, 192, 180, .22);
  --hair-sand: rgba(217, 210, 194, .26);
}

.page-about .about-top {
  padding-top: clamp(16px, 2.6vw, 28px);
}

.page-about .about-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin-top: clamp(16px, 2.6vw, 28px);
}

.page-about .about-hero__lead {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 3.6vw, 46px);
  border-radius: var(--radius);
  border: 1px solid var(--hair);
  background: linear-gradient(146deg, var(--moss) 0%, var(--green) 56%, var(--green-deep) 100%);
}

.page-about .about-hero__lead::after {
  content: "";
  position: absolute;
  top: -30%;
  right: -12%;
  width: 46%;
  height: 170%;
  background: linear-gradient(100deg, transparent 0%, rgba(230, 57, 70, .22) 42%, transparent 100%);
  transform: rotate(16deg);
  pointer-events: none;
}

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

.page-about .about-hero__title {
  margin: .5rem 0 1rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 5.2vw, 58px);
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-about .about-hero__lede {
  max-width: 62ch;
  color: var(--mist);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(18px, 2.4vw, 26px);
}

.page-about .about-hero__cell {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 8px;
  min-height: 116px;
  padding: clamp(16px, 2.2vw, 24px);
  border-radius: var(--radius);
  border: 1px solid var(--hair);
  background: rgba(21, 80, 65, .48);
}

.page-about .about-hero__cell--red {
  border-color: var(--red);
  background: linear-gradient(160deg, var(--red) 0%, #C42C38 100%);
}

.page-about .about-hero__value {
  display: inline-flex;
  align-items: baseline;
  gap: 4px;
  font-family: var(--font-mono);
}

.page-about .about-hero__num {
  font-size: clamp(34px, 5.4vw, 52px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--gold);
}

.page-about .about-hero__unit {
  font-family: var(--font-sans);
  font-size: 14px;
  color: var(--mist);
}

.page-about .about-hero__label {
  font-size: 13px;
  line-height: 1.6;
  letter-spacing: .04em;
  color: var(--mist);
}

.page-about .about-hero__cell--red .about-hero__num,
.page-about .about-hero__cell--red .about-hero__label {
  color: var(--paper);
}

.page-about .about-hero__cell--red .about-hero__unit {
  color: var(--gold-shallow);
}

.page-about .about-timeline {
  padding-top: clamp(46px, 8vw, 96px);
}

.page-about .timeline-head {
  max-width: 70ch;
  margin-bottom: clamp(26px, 4vw, 48px);
}

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

.page-about .timeline__list::before {
  content: "";
  position: absolute;
  left: var(--tl-x);
  top: 14px;
  bottom: 14px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--gold) 0%, rgba(244, 162, 97, .45) 62%, rgba(244, 162, 97, .1) 100%);
}

.page-about .stage {
  position: relative;
  padding-left: var(--tl-pad);
}

.page-about .stage + .stage {
  margin-top: clamp(42px, 6.4vw, 86px);
}

.page-about .stage__node {
  position: absolute;
  top: 4px;
  left: calc(var(--tl-x) - 7px);
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--green-deep);
  border: 3px solid var(--gold);
  box-shadow: 0 0 0 5px rgba(244, 162, 97, .12);
  transition: transform .24s var(--ease), border-color .24s var(--ease), box-shadow .24s var(--ease);
}

.page-about .stage__node:hover,
.page-about .stage__node:focus-visible,
.page-about .stage:target .stage__node {
  transform: scale(1.35);
  border-color: var(--red-lift);
  box-shadow: 0 0 0 7px rgba(230, 57, 70, .18);
}

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

.page-about .stage__index {
  color: var(--gold);
}

.page-about .stage__title {
  margin: .35rem 0 .9rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 3.2vw, 34px);
  line-height: 1.24;
  letter-spacing: -.012em;
  color: var(--paper);
}

.page-about .stage__text {
  max-width: 72ch;
  margin: 0 0 1rem;
  color: var(--mist);
  line-height: 1.82;
}

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

.page-about .stage__aside {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 3vw, 32px);
  align-items: start;
}

.page-about .metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: clamp(20px, 3vw, 34px);
  border-right: 1px solid var(--hair-sand);
  border-bottom: 1px solid var(--hair-sand);
}

.page-about .metrics__item {
  padding: clamp(14px, 2.2vw, 22px) clamp(12px, 2vw, 20px);
  border-top: 1px solid var(--hair-sand);
  border-left: 1px solid var(--hair-sand);
  transition: background .24s var(--ease);
}

.page-about .metrics__item:hover {
  background: rgba(21, 80, 65, .55);
}

.page-about .metrics__value {
  display: inline-flex;
  align-items: baseline;
  gap: 4px;
  font-family: var(--font-mono);
}

.page-about .metrics__num {
  font-size: clamp(26px, 3.6vw, 38px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--gold);
}

.page-about .metrics__unit {
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--mist);
}

.page-about .metrics__label {
  display: block;
  margin-top: 10px;
  font-size: 14px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .metrics__note {
  display: block;
  margin-top: 5px;
  font-size: 12px;
  line-height: 1.65;
  color: var(--mist);
  transition: color .24s var(--ease);
}

.page-about .metrics__item:hover .metrics__note {
  color: var(--gold-shallow);
}

.page-about .tick-list {
  margin-top: clamp(14px, 2vw, 22px);
  color: var(--mist);
}

.page-about .tick-list li {
  line-height: 1.8;
}

.page-about .tick-list li + li {
  margin-top: 8px;
}

.page-about .emblem-row {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(14px, 2.4vw, 26px);
  margin-top: clamp(22px, 3vw, 32px);
}

.page-about .emblem {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  width: 108px;
  height: 108px;
  padding: 12px;
  text-align: center;
  background: conic-gradient(from 130deg, var(--moss), var(--green-deep) 55%, var(--moss));
  border: 1px solid rgba(244, 162, 97, .55);
  clip-path: polygon(50% 0%, 100% 24%, 100% 76%, 50% 100%, 0% 76%, 0% 24%);
}

.page-about .emblem--round {
  clip-path: none;
  border-radius: 50%;
}

.page-about .emblem__zh {
  font-size: 13px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--paper);
}

.page-about .emblem__en {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-about .partners {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: clamp(20px, 2.8vw, 28px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .partners__item {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 15px;
  border-radius: 999px;
  border: 1px solid rgba(244, 162, 97, .38);
  background: rgba(21, 80, 65, .5);
  transition: transform .22s var(--ease), border-color .22s var(--ease), background .22s var(--ease);
}

.page-about .partners__item:hover {
  transform: scale(1.06);
  border-color: var(--gold);
  background: rgba(244, 162, 97, .14);
}

.page-about .partners__name {
  font-size: 14px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .partners__type {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--gold);
}

.page-about .coord-card {
  margin: clamp(16px, 2.4vw, 24px) 0 clamp(20px, 3vw, 30px);
  padding: clamp(20px, 3vw, 34px);
  border-radius: var(--radius);
  border: 1px solid var(--night);
  background-color: var(--paper);
  background-image:
    repeating-linear-gradient(0deg, rgba(29, 53, 87, .12) 0 1px, transparent 1px 26px),
    repeating-linear-gradient(90deg, rgba(29, 53, 87, .12) 0 1px, transparent 1px 26px);
}

.page-about .coord-card__coord {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--night);
}

.page-about .coord-card__addr {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(17px, 2.2vw, 22px);
  font-weight: 800;
  line-height: 1.55;
  color: var(--green-deep);
}

.page-about .coord-card__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--night);
}

.page-about .media-frame {
  margin-top: clamp(20px, 3vw, 32px);
}

.page-about .media-frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .about-next {
  margin-bottom: clamp(42px, 6vw, 84px);
}

.page-about .next-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin: clamp(20px, 3vw, 32px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .next-card {
  display: flex;
  flex-direction: column;
  gap: 9px;
  height: 100%;
  padding: clamp(20px, 2.6vw, 28px);
  border-radius: var(--radius);
  border: 1px solid var(--hair);
  background: rgba(21, 80, 65, .42);
  text-decoration: none;
  transition: transform .24s var(--ease), border-color .24s var(--ease), background .24s var(--ease);
}

.page-about .next-card:hover {
  transform: translateY(-4px);
  border-color: var(--gold);
  background: rgba(244, 162, 97, .12);
}

.page-about .next-card__idx {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--gold);
}

.page-about .next-card__title {
  font-family: var(--font-display);
  font-size: clamp(18px, 2.2vw, 22px);
  font-weight: 800;
  color: var(--paper);
}

.page-about .next-card__desc {
  font-size: 14px;
  line-height: 1.76;
  color: var(--mist);
}

@media (min-width: 760px) {
  .page-about .metrics {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .next-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 820px) {
  .page-about .about-hero {
    grid-template-columns: 1.4fr .85fr .85fr;
    grid-template-areas:
      "lead a b"
      "lead c c";
  }

  .page-about .about-hero__lead { grid-area: lead; }
  .page-about .about-hero__cell--a { grid-area: a; }
  .page-about .about-hero__cell--b { grid-area: b; }
  .page-about .about-hero__cell--c { grid-area: c; }
}

@media (min-width: 860px) {
  .page-about .stage__aside {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, .8fr);
  }
}

@media (min-width: 980px) {
  .page-about .stage:nth-child(even) .stage__body {
    margin-left: clamp(24px, 5vw, 84px);
  }
}