.page-about {
  --about-hair: rgba(122, 135, 152, 0.28);
  --about-hair-soft: rgba(122, 135, 152, 0.14);
  --about-shadow: 0 18px 34px rgba(0, 0, 0, 0.34);
  padding-inline-start: var(--rail-w);
  background: var(--rock);
  color: var(--pale);
  font-family: var(--font-body);
  overflow-x: clip;
}

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

.page-about .shell {
  max-width: var(--shell-max);
  margin-inline: auto;
  padding-inline: var(--pad-x);
}

.page-about .breadcrumb {
  max-width: var(--shell-max);
  margin-inline: auto;
  padding: var(--gap-3) var(--pad-x) 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--haze);
}

.page-about .breadcrumb a {
  color: var(--haze);
  text-decoration: none;
  transition: color 0.24s var(--ease);
}

.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus-visible {
  color: var(--fluoro);
}

.page-about .inline-link {
  color: var(--fluoro);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-about .inline-link:hover,
.page-about .inline-link:focus-visible {
  color: var(--neon);
}

/* ---------- 首屏 ---------- */

.page-about .about-cover {
  position: relative;
  padding-block: clamp(28px, 5vw, 64px) var(--gap-5);
}

.page-about .about-cover__inner {
  display: grid;
  gap: var(--gap-4);
}

.page-about .about-cover__title {
  margin: var(--gap-3) 0 0;
  font-family: var(--font-display);
  font-size: clamp(38px, 9.4vw, 88px);
  font-weight: 300;
  line-height: 1.06;
  letter-spacing: 0.06em;
  color: var(--paper);
  word-break: keep-all;
}

.page-about .about-cover__aside {
  display: grid;
  gap: var(--gap-3);
  justify-items: start;
  align-content: end;
}

.page-about .about-seal {
  display: grid;
  place-content: center;
  gap: 4px;
  width: 108px;
  height: 108px;
  border: 1px solid var(--clay);
  outline: 1px solid var(--about-hair-soft);
  outline-offset: 4px;
  transform: rotate(-6deg);
  text-align: center;
  font-family: var(--font-mono);
  color: var(--clay);
}

.page-about .about-seal__a,
.page-about .about-seal__c {
  font-size: 9px;
  letter-spacing: 0.16em;
}

.page-about .about-seal__b {
  font-size: 22px;
  line-height: 1;
  letter-spacing: 0.1em;
  color: var(--paper);
}

.page-about .about-cover__lede {
  margin: 0;
  max-width: 46ch;
  font-size: 17px;
  line-height: 1.85;
  color: var(--pale);
}

.page-about .about-cover__figure {
  margin: var(--gap-5) 0 0;
  border: 1px solid var(--about-hair);
  background: var(--mist);
}

/* ---------- 章节通用节奏 ---------- */

.page-about .about-teams,
.page-about .about-archive,
.page-about .about-review,
.page-about .about-city,
.page-about .about-partners,
.page-about .about-join {
  position: relative;
}

.page-about .about-teams {
  padding-block: var(--gap-5) var(--gap-6);
  border-top: 1px solid var(--about-hair-soft);
}

.page-about .about-archive {
  padding-block: var(--gap-6);
  background:
    linear-gradient(180deg, rgba(76, 107, 78, 0.18), transparent 62%),
    var(--mist);
}

.page-about .about-review {
  padding-block: var(--gap-6);
}

.page-about .about-city {
  padding-block: var(--gap-6);
  background:
    linear-gradient(200deg, rgba(47, 143, 124, 0.16), transparent 58%),
    var(--rock);
}

.page-about .about-partners {
  padding-block: var(--gap-5) var(--gap-6);
  border-top: 1px solid var(--about-hair-soft);
}

.page-about .about-join {
  padding-block: var(--gap-5) var(--gap-6);
  background: var(--mist);
}

/* ---------- 分工图例 ---------- */

.page-about .legends {
  list-style: none;
  margin: var(--gap-5) 0 0;
  padding: 0;
  display: grid;
  gap: var(--gap-3);
}

.page-about .legend {
  --legend-accent: var(--river);
  position: relative;
  padding: var(--gap-3);
  background: var(--rock);
  border: 1px solid var(--about-hair);
  border-top: 3px solid var(--legend-accent);
  transition: transform 0.32s var(--ease), border-color 0.32s var(--ease);
}

.page-about .legend:hover {
  transform: translateY(-3px);
  border-color: var(--legend-accent);
}

.page-about .legend--data {
  --legend-accent: var(--river);
}

.page-about .legend--recap {
  --legend-accent: var(--neon);
}

.page-about .legend--city {
  --legend-accent: var(--clay);
}

.page-about .legend--member {
  --legend-accent: var(--fluoro);
}

.page-about .legend__name {
  margin: 0 0 var(--gap-2);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--paper);
}

.page-about .legend__body {
  margin: 0;
  font-size: 15px;
  line-height: 1.82;
  color: var(--pale);
}

/* ---------- 赛季纵轴 ---------- */

.page-about .axis {
  list-style: none;
  margin: var(--gap-5) 0 0;
  padding: 0 0 0 24px;
  position: relative;
}

.page-about .axis::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(180deg, var(--clay), var(--moss) 55%, var(--neon));
}

.page-about .axis__node {
  position: relative;
  padding-bottom: var(--gap-5);
}

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

.page-about .axis__node::before {
  content: "";
  position: absolute;
  left: -24px;
  top: 7px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--mist);
  border: 2px solid var(--clay);
}

.page-about .axis__node--now::before {
  background: var(--neon);
  border-color: var(--neon);
  box-shadow: 0 0 0 5px rgba(255, 90, 60, 0.2);
}

.page-about .axis__no {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.18em;
  color: var(--fluoro);
}

.page-about .axis__title {
  margin: 0 0 6px;
  font-size: 21px;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--paper);
}

.page-about .axis__text {
  margin: 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--pale);
}

/* ---------- 复查 ---------- */

.page-about .about-review__grid {
  display: grid;
  gap: var(--gap-5);
}

.page-about .stack {
  list-style: none;
  margin: var(--gap-4) 0 0;
  padding: 0;
  display: grid;
  gap: var(--gap-2);
}

.page-about .stack__sheet {
  position: relative;
  padding: var(--gap-3) var(--gap-3) var(--gap-3) var(--gap-4);
  background: var(--rock);
  border: 1px solid var(--about-hair);
  box-shadow: -8px 8px 0 rgba(0, 0, 0, 0.26);
}

.page-about .stack__sheet::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: var(--clay);
}

.page-about .stack__sheet:nth-child(2)::before {
  background: var(--river);
}

.page-about .stack__sheet:nth-child(3)::before {
  background: var(--neon);
}

.page-about .stack__title {
  margin: 0 0 6px;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--paper);
}

.page-about .stack__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.82;
  color: var(--pale);
}

.page-about .about-review__note {
  margin: var(--gap-4) 0 0;
  padding-left: var(--gap-3);
  border-left: 2px solid var(--clay);
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--pale);
}

.page-about .about-review__figure {
  margin: 0;
  border: 1px solid var(--about-hair);
  background: var(--rock);
}

/* ---------- 城市影像 ---------- */

.page-about .about-city__figure {
  margin: var(--gap-5) 0 var(--gap-4);
  border: 1px solid rgba(47, 143, 124, 0.42);
  background: var(--mist);
}

.page-about .about-city__cols {
  display: grid;
  gap: var(--gap-4);
}

.page-about .about-city__col {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--pale);
}

/* ---------- 合作方标签 ---------- */

.page-about .partners {
  list-style: none;
  margin: var(--gap-5) 0 0;
  padding: 0;
  display: grid;
  gap: var(--gap-3);
}

.page-about .partner {
  position: relative;
  padding: var(--gap-3);
  background: var(--grain);
  color: var(--rock);
  box-shadow: var(--about-shadow);
  transform: rotate(-1.4deg);
  transition: transform 0.34s var(--ease), box-shadow 0.34s var(--ease);
}

.page-about .partner:nth-child(2) {
  transform: rotate(1.1deg);
}

.page-about .partner:hover,
.page-about .partner:focus-within {
  transform: rotate(0deg) translateY(-4px);
  box-shadow: 0 24px 42px rgba(0, 0, 0, 0.42);
}

.page-about .partner__type {
  display: inline-block;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--rock);
}

.page-about .partner__count {
  display: inline-block;
  margin-left: var(--gap-2);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  padding: 2px 8px;
  background: var(--clay);
  color: var(--paper);
}

.page-about .partner__body {
  margin: var(--gap-2) 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: #3A3E44;
}

.page-about .about-partners__cta {
  margin: var(--gap-4) 0 0;
}

/* ---------- 联络三栏 ---------- */

.page-about .join-grid {
  display: grid;
  gap: var(--gap-3);
  margin-top: var(--gap-5);
}

.page-about .join-card {
  display: flex;
  flex-direction: column;
  gap: var(--gap-2);
  padding: var(--gap-3);
  background: linear-gradient(180deg, rgba(18, 22, 28, 0.92), rgba(18, 22, 28, 0.6));
  border: 1px solid var(--about-hair);
  border-top: 2px solid var(--neon);
}

.page-about .join-card__title {
  margin: 0;
  font-size: 19px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--paper);
}

.page-about .join-card__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.82;
  color: var(--pale);
}

.page-about .join-card__btn {
  margin-top: auto;
  align-self: flex-start;
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-about .about-city__cols {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--gap-5);
  }
}

@media (min-width: 768px) {
  .page-about .legends {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .partners {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--gap-4);
  }

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

  .page-about .axis__node {
    display: grid;
    grid-template-columns: 120px minmax(0, 1fr);
    gap: var(--gap-4);
  }

  .page-about .axis__no {
    margin-bottom: 0;
    padding-top: 4px;
  }
}

@media (min-width: 900px) {
  .page-about .about-cover__inner {
    grid-template-columns: minmax(0, 7fr) minmax(260px, 4fr);
    align-items: end;
    gap: var(--gap-5);
  }

  .page-about .about-review__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
    gap: var(--gap-5);
  }

  .page-about .about-review__figure {
    margin-top: var(--gap-4);
  }
}

@media (min-width: 1180px) {
  .page-about .legends {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .legend:nth-child(2),
  .page-about .legend:nth-child(4) {
    transform: translateY(24px);
  }

  .page-about .legend:nth-child(2):hover,
  .page-about .legend:nth-child(4):hover {
    transform: translateY(21px);
  }
}

@media (max-width: 899px) {
  .page-about {
    padding-inline-start: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    transition: none !important;
    animation: none !important;
  }
}