.page-about {
  background: var(--ink);
  color: var(--paper);
  overflow-x: hidden;
}

.page-about .breadcrumb {
  padding-top: 22px;
  padding-bottom: 18px;
  font-size: var(--f-14);
  color: var(--fog);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  letter-spacing: 0.04em;
}

.page-about .breadcrumb__link {
  color: var(--fog);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .breadcrumb__link:hover,
.page-about .breadcrumb__link:focus-visible {
  color: var(--signal);
  border-bottom-color: var(--signal);
}

.page-about .breadcrumb__sep {
  color: var(--line);
}

/* ---------- 封面 ---------- */

.page-about .about-cover {
  position: relative;
  padding: 26px 0 46px;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(130% 100% at 100% 0%, rgba(41, 224, 138, 0.11), transparent 62%),
    var(--ink);
}

.page-about .about-cover__grid {
  display: grid;
  gap: 30px;
}

.page-about .about-cover__kicker {
  color: var(--signal);
  margin: 0;
}

.page-about .about-cover__title {
  margin: 16px 0 0;
  font-family: var(--sans);
  font-weight: 900;
  font-size: clamp(34px, 8.4vw, 72px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  max-width: 17ch;
}

.page-about .about-cover__em {
  color: var(--signal);
}

.page-about .about-cover__lede {
  margin: 22px 0 0;
  max-width: 42ch;
  font-size: var(--f-18);
  line-height: 1.75;
  color: var(--fog);
}

.page-about .about-cover__stats {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-cover__stat {
  background: var(--carbon);
  padding: 16px 14px 18px;
}

.page-about .about-cover__stat dt {
  font-size: var(--f-14);
  letter-spacing: 0.14em;
  color: var(--fog);
  text-transform: uppercase;
}

.page-about .about-cover__stat dd {
  margin: 10px 0 0;
  font-family: var(--mono);
  font-size: var(--f-18);
  font-weight: 700;
  color: var(--paper);
  letter-spacing: -0.01em;
}

.page-about .about-cover__vnote {
  position: absolute;
  right: 14px;
  top: 84px;
  writing-mode: vertical-rl;
  font-size: var(--f-14);
  letter-spacing: 0.3em;
  color: var(--signal);
  opacity: 0.75;
  margin: 0;
  pointer-events: none;
}

/* ---------- 起点故事 ---------- */

.page-about .about-story {
  padding: 54px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .about-story__grid {
  display: grid;
  gap: 28px;
}

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

.page-about .about-story__kicker {
  margin: 0 0 12px;
  color: var(--data);
}

.page-about .about-story__title {
  margin: 0 0 18px;
  font-family: var(--sans);
  font-weight: 900;
  font-size: clamp(26px, 6vw, 36px);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.page-about .about-story__body .prose p {
  margin: 0 0 16px;
  font-size: var(--f-18);
  line-height: 1.75;
  color: var(--paper);
}

.page-about .about-story__body .prose p:last-child {
  margin-bottom: 0;
  color: var(--fog);
}

/* ---------- 赛季时间线 ---------- */

.page-about .about-season {
  padding: 54px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .about-season__head {
  margin-bottom: 30px;
}

.page-about .section-head__title {
  font-size: clamp(24px, 5.6vw, 36px);
  line-height: 1.22;
  font-weight: 900;
  margin: 10px 0 0;
}

.page-about .section-head__note {
  margin: 14px 0 0;
  max-width: 56ch;
  font-size: var(--f-18);
  line-height: 1.7;
  color: var(--fog);
}

.page-about .section-head__kicker {
  color: var(--signal);
  margin: 0;
}

.page-about .about-season__figure {
  margin: 0 0 34px;
}

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

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 13px;
  top: 14px;
  bottom: 18px;
  width: 1px;
  background: linear-gradient(180deg, var(--signal) 0%, var(--line) 26%, var(--line) 100%);
}

.page-about .about-timeline__item {
  position: relative;
  padding-left: 48px;
  padding-bottom: 38px;
}

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

.page-about .about-timeline__no {
  position: absolute;
  left: 0;
  top: 0;
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--ink);
  color: var(--signal);
  font-size: var(--f-14);
  font-weight: 700;
  z-index: 1;
  transition: background-color 0.22s var(--ease), border-color 0.22s var(--ease), color 0.22s var(--ease);
}

.page-about .about-timeline__stage {
  margin: 2px 0 8px;
  font-size: var(--f-14);
  letter-spacing: 0.14em;
  color: var(--fog);
  text-transform: uppercase;
}

.page-about .about-timeline__name {
  margin: 0 0 10px;
  font-size: var(--f-24);
  font-weight: 800;
  line-height: 1.34;
  color: var(--paper);
}

.page-about .about-timeline__text {
  margin: 0;
  font-size: var(--f-18);
  line-height: 1.72;
  color: var(--paper);
  max-width: 60ch;
}

.page-about .about-timeline__aside {
  margin: 14px 0 0;
  padding: 12px 14px;
  background: var(--moss);
  border-left: 3px solid var(--signal);
  font-size: var(--f-14);
  line-height: 1.66;
  color: var(--index);
  max-width: 60ch;
  transition: transform 0.24s var(--ease), border-color 0.24s var(--ease);
}

.page-about .about-timeline__item:hover .about-timeline__no,
.page-about .about-timeline__item:focus-within .about-timeline__no {
  background: var(--signal);
  border-color: var(--signal);
  color: var(--ink);
}

.page-about .about-timeline__item:hover .about-timeline__aside,
.page-about .about-timeline__item:focus-within .about-timeline__aside {
  transform: translateX(4px);
}

/* ---------- 团队分工 ---------- */

.page-about .about-crew {
  padding: 54px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .about-crew__head {
  margin-bottom: 30px;
}

.page-about .about-crew__list {
  list-style: none;
  margin: 0 0 34px;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-crew__cell {
  background: var(--carbon);
  padding: 22px 20px 24px;
  position: relative;
  transition: background-color 0.22s var(--ease), box-shadow 0.22s var(--ease), transform 0.22s var(--ease);
}

.page-about .about-crew__cell::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--signal);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.26s var(--ease);
}

.page-about .about-crew__cell:hover {
  background: #151b23;
  transform: translateY(-2px);
  box-shadow: 4px 4px 0 0 rgba(41, 224, 138, 0.28);
}

.page-about .about-crew__cell:hover::before {
  transform: scaleY(1);
}

.page-about .about-crew__idx {
  display: block;
  font-size: var(--f-14);
  color: var(--data);
  letter-spacing: 0.16em;
  margin-bottom: 10px;
}

.page-about .about-crew__name {
  margin: 0 0 10px;
  font-size: var(--f-24);
  font-weight: 800;
  line-height: 1.3;
}

.page-about .about-crew__desc {
  margin: 0;
  font-size: var(--f-18);
  line-height: 1.7;
  color: var(--fog);
}

.page-about .about-crew__flow {
  border: 1px solid var(--line);
  background: var(--carbon);
  padding: 22px 20px 24px;
}

.page-about .about-crew__flow-label {
  margin: 0 0 16px;
  color: var(--alert);
}

.page-about .about-crew__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: step;
  display: grid;
  gap: 12px;
}

.page-about .about-crew__steps li {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  font-size: var(--f-18);
  line-height: 1.66;
  color: var(--paper);
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--line);
}

.page-about .about-crew__steps li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .about-crew__steps .num {
  color: var(--signal);
  font-size: var(--f-14);
  letter-spacing: 0.08em;
}

/* ---------- 数据来源 ---------- */

.page-about .about-source {
  padding: 54px 0;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, var(--ink) 0%, #080c11 100%);
}

.page-about .about-source__grid {
  display: grid;
  gap: 30px;
}

.page-about .about-source__kicker {
  margin: 0 0 12px;
  color: var(--data);
}

.page-about .about-source__title {
  margin: 0 0 18px;
  font-size: clamp(24px, 5.6vw, 36px);
  font-weight: 900;
  line-height: 1.22;
}

.page-about .about-source__body .prose p {
  margin: 0 0 16px;
  font-size: var(--f-18);
  line-height: 1.75;
  color: var(--paper);
  max-width: 58ch;
}

.page-about .about-source__points {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-source__points li {
  display: grid;
  grid-template-columns: 12px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  font-size: var(--f-18);
  line-height: 1.66;
  color: var(--fog);
}

.page-about .about-source__points strong {
  color: var(--paper);
  font-weight: 800;
}

.page-about .about-source__dot {
  width: 10px;
  height: 10px;
  margin-top: 8px;
  background: var(--fog);
  display: block;
}

.page-about .about-source__dot--signal {
  background: var(--signal);
}

.page-about .about-source__dot--data {
  background: var(--data);
}

.page-about .about-source__dot--alert {
  background: var(--alert);
}

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

/* ---------- 归档结构 ---------- */

.page-about .about-archive {
  padding: 54px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .about-archive__head {
  margin-bottom: 30px;
}

.page-about .about-archive__layers {
  display: grid;
  gap: 16px;
}

.page-about .about-archive__layer {
  position: relative;
  padding: 22px 20px 24px;
  border: 1px solid var(--line);
  background: var(--carbon);
  box-shadow: 6px 6px 0 0 rgba(38, 48, 58, 0.9);
}

.page-about .about-archive__layer--1 {
  border-left: 3px solid var(--signal);
}

.page-about .about-archive__layer--2 {
  border-left: 3px solid var(--data);
}

.page-about .about-archive__layer--3 {
  border-left: 3px solid var(--alert);
}

.page-about .about-archive__layer-no {
  margin: 0 0 10px;
  font-size: var(--f-14);
  letter-spacing: 0.18em;
  color: var(--fog);
}

.page-about .about-archive__layer-name {
  margin: 0 0 10px;
  font-size: var(--f-24);
  font-weight: 800;
  line-height: 1.3;
}

.page-about .about-archive__layer p:last-child {
  margin: 0;
  font-size: var(--f-18);
  line-height: 1.7;
  color: var(--fog);
}

.page-about .about-archive__tail {
  margin: 26px 0 0;
  padding: 18px 20px;
  background: var(--index);
  color: #1a1f26;
  border-left: 4px solid var(--signal);
  font-size: var(--f-18);
  line-height: 1.7;
  max-width: 68ch;
}

/* ---------- 合作与认可 ---------- */

.page-about .about-recog {
  padding: 54px 0 70px;
}

.page-about .about-recog__grid {
  display: grid;
  gap: 28px;
}

.page-about .about-recog__kicker {
  margin: 0 0 12px;
  color: var(--score);
}

.page-about .about-recog__title {
  margin: 0 0 18px;
  font-size: clamp(24px, 5.6vw, 36px);
  font-weight: 900;
  line-height: 1.22;
}

.page-about .about-recog__body .prose p {
  margin: 0 0 16px;
  font-size: var(--f-18);
  line-height: 1.75;
  color: var(--paper);
  max-width: 58ch;
}

.page-about .about-recog__list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-about .about-recog__item {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  align-items: baseline;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  font-size: var(--f-18);
  line-height: 1.6;
  color: var(--fog);
}

.page-about .about-recog__key {
  min-width: 76px;
  font-size: var(--f-14);
  letter-spacing: 0.14em;
  color: var(--fog);
  text-transform: uppercase;
}

.page-about .about-recog__val {
  color: var(--signal);
  font-weight: 700;
}

.page-about .about-recog__cta {
  margin: 28px 0 0;
}

.page-about .about-recog__cta .btn {
  display: inline-block;
  text-decoration: none;
}

.page-about .about-recog__aside {
  align-self: start;
  padding: 20px;
  border: 1px solid var(--line);
  box-shadow: 6px 6px 0 0 rgba(38, 48, 58, 0.9);
}

.page-about .about-recog__aside-label {
  margin: 0 0 16px;
  color: #4a4437;
}

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

.page-about .about-recog__link {
  display: block;
  color: #1a1f26;
  font-size: var(--f-18);
  line-height: 1.6;
  text-decoration: none;
  padding-bottom: 4px;
  border-bottom: 1px solid rgba(26, 31, 38, 0.24);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-about .about-recog__link:hover,
.page-about .about-recog__link:focus-visible {
  color: #0b6a44;
  border-bottom-color: #0b6a44;
  transform: translateX(4px);
}

/* ---------- 响应式 ---------- */

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

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

  .page-about .about-archive__layer--3 {
    grid-column: 1 / -1;
  }
}

@media (min-width: 900px) {
  .page-about .about-cover {
    padding: 40px 0 62px;
  }

  .page-about .about-cover__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    gap: 52px;
    align-items: end;
  }

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

  .page-about .about-cover__vnote {
    right: 26px;
    top: 120px;
  }

  .page-about .about-story,
  .page-about .about-season,
  .page-about .about-crew,
  .page-about .about-source,
  .page-about .about-archive {
    padding: 76px 0;
  }

  .page-about .about-recog {
    padding: 76px 0 96px;
  }

  .page-about .about-story__grid {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .about-story__figure {
    position: sticky;
    top: 32px;
  }

  .page-about .about-timeline {
    padding-left: 8px;
  }

  .page-about .about-timeline__item {
    padding-left: 66px;
    padding-bottom: 48px;
  }

  .page-about .about-timeline__no {
    width: 32px;
    height: 32px;
  }

  .page-about .about-timeline::before {
    left: 15px;
  }

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

  .page-about .about-source__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 56px;
    align-items: start;
  }

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

  .page-about .about-archive__layer--3 {
    grid-column: auto;
  }

  .page-about .about-recog__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }
}

@media (min-width: 1180px) {
  .page-about .about-cover__vnote {
    right: 42px;
  }
}

@media (max-width: 899px) {
  .page-about .about-cover__vnote {
    display: none;
  }

  .page-about .about-story__figure {
    position: static;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-crew__cell,
  .page-about .about-crew__cell::before,
  .page-about .about-timeline__aside,
  .page-about .about-timeline__no,
  .page-about .about-recog__link {
    transition: none;
  }
}