.page-about {
  --about-edge: clamp(16px, 4vw, 48px);
  --about-gap: clamp(20px, 3vw, 36px);
  --about-radius: 4px;
}

/* ---------- 面包屑间距 ---------- */
.page-about > .breadcrumbs {
  margin: 24px 0 8px;
}

/* ---------- 首屏左右分屏 ---------- */
.page-about .about-hero {
  padding: clamp(8px, 2vw, 24px) var(--about-edge) clamp(40px, 6vw, 72px);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 5vw, 56px);
  align-items: start;
}

.page-about .about-hero__lead {
  position: relative;
  padding-top: 8px;
}

.page-about .about-hero__title {
  margin: 12px 0 20px;
  font-family: var(--font-display);
  font-weight: 200;
  font-size: clamp(2.4rem, 6.4vw, 4.6rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--snow);
}

.page-about .about-hero__lede {
  max-width: 46ch;
  color: var(--text-soft);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .about-hero__figure {
  margin: clamp(26px, 4vw, 44px) 0 0;
  border: 1px solid var(--hair);
  border-radius: var(--about-radius);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 14 / 9;
}

/* ---------- 首屏右栏：里程碑 + 索引 ---------- */
.page-about .about-hero__rail {
  display: grid;
  gap: var(--about-gap);
  border-left: 1px solid var(--hair);
  padding-left: clamp(16px, 2.4vw, 28px);
}

.page-about .about-stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--hair);
  border: 1px solid var(--hair);
  border-radius: var(--about-radius);
  overflow: hidden;
}

.page-about .about-stats__item {
  background: var(--ink-2);
  padding: 16px 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .about-stats__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.6rem, 3.4vw, 2.3rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--neon);
  text-shadow: 0 0 14px rgba(25, 227, 209, 0.35);
}

.page-about .about-stats__label {
  font-size: var(--step-caption);
  line-height: 1.6;
  color: var(--text-mute);
}

.page-about .about-index {
  border-top: 1px solid var(--hair);
  padding-top: 18px;
}

.page-about .about-index__title {
  margin: 0 0 12px;
  font-size: var(--step-caption);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--jade);
}

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

.page-about .about-index__list a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 9px 6px;
  color: var(--snow);
  text-decoration: none;
  font-size: 0.9375rem;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}

.page-about .about-index__list a .numeric {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--clay);
  letter-spacing: 0.06em;
}

.page-about .about-index__list a:hover,
.page-about .about-index__list a:focus-visible {
  color: var(--neon);
  border-bottom-color: var(--jade);
  padding-left: 12px;
}

/* ---------- 斜切分隔条 ---------- */
.page-about .about-slash {
  display: flex;
  height: 6px;
  margin: 0 var(--about-edge);
  overflow: hidden;
  transform: skewX(-14deg);
}

.page-about .about-slash__clay {
  flex: 0 0 38%;
  background: var(--clay);
}

.page-about .about-slash__jade {
  flex: 1 1 auto;
  background: linear-gradient(90deg, var(--jade), rgba(0, 168, 107, 0.08));
}

.page-about .about-slash--flip {
  transform: skewX(14deg);
}

/* ---------- 通用章节头 ---------- */
.page-about .about-archive__head,
.page-about .about-operations__head,
.page-about .about-season__head,
.page-about .about-history__head,
.page-about .about-why__head {
  max-width: 66ch;
}

.page-about .about-archive__lede,
.page-about .about-operations__lede,
.page-about .about-season__lede,
.page-about .about-history__lede {
  color: var(--text-soft);
  margin-top: 14px;
}

/* ---------- 01 赛季档案 ---------- */
.page-about .about-archive__body {
  margin-top: clamp(28px, 4vw, 48px);
  gap: var(--about-gap);
  align-items: start;
}

.page-about .about-archive__col {
  display: grid;
  gap: 18px;
}

.page-about .about-note {
  border: 1px solid var(--hair);
  border-left: 3px solid var(--jade);
  border-radius: var(--about-radius);
  background: rgba(14, 42, 29, 0.5);
  padding: 18px 20px;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .about-note:hover {
  border-left-color: var(--neon);
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}

.page-about .about-note__title {
  margin: 0 0 8px;
  font-family: var(--font-accent);
  font-weight: 700;
  font-size: 1.0625rem;
  letter-spacing: 0.01em;
  color: var(--snow);
}

.page-about .about-note p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--text-soft);
}

.page-about .about-archive__aside {
  display: grid;
  gap: 18px;
}

.page-about .about-factcard {
  padding: 22px 20px;
  border-radius: var(--about-radius);
}

.page-about .about-factcard__label {
  margin: 0;
  font-size: var(--step-caption);
  letter-spacing: 0.14em;
  color: var(--text-mute);
}

.page-about .about-factcard__value {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(2.6rem, 6vw, 4rem);
  line-height: 0.95;
  letter-spacing: -0.03em;
  color: var(--snow);
}

.page-about .about-factcard__unit {
  margin: 4px 0 12px;
  font-size: 0.875rem;
  color: var(--ref);
  letter-spacing: 0.06em;
}

.page-about .about-factcard__desc {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--text-soft);
}

/* ---------- 02 数据运营体系 ---------- */
.page-about .about-pipeline {
  list-style: none;
  margin: clamp(28px, 4vw, 48px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--hair);
  border: 1px solid var(--hair);
  border-radius: var(--about-radius);
  overflow: hidden;
}

.page-about .about-pipeline__step {
  background: var(--ink-2);
  padding: 24px 22px;
  display: grid;
  gap: 8px;
  position: relative;
}

.page-about .about-pipeline__idx {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.16em;
  color: var(--clay);
}

.page-about .about-pipeline__title {
  margin: 0;
  font-family: var(--font-accent);
  font-weight: 900;
  font-size: 1.375rem;
  transform: skewX(-8deg);
  color: var(--jade);
  letter-spacing: 0.02em;
}

.page-about .about-pipeline__text {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--text-soft);
}

.page-about .about-operations__figure {
  margin: clamp(28px, 4vw, 44px) 0 0;
  border: 1px solid var(--hair);
  border-radius: var(--about-radius);
  overflow: hidden;
  background: var(--wood);
}

.page-about .about-operations__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 3 / 2;
  opacity: 0.94;
}

.page-about .about-operations__figure .media-frame__caption {
  display: block;
  padding: 12px 16px;
  background: var(--black);
  color: var(--text-mute);
  font-size: var(--step-caption);
  line-height: 1.6;
}

/* ---------- 数据带 ---------- */
.page-about .about-band {
  margin: clamp(32px, 5vw, 64px) var(--about-edge);
  border-radius: var(--about-radius);
}

.page-about .about-band__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.page-about .about-band__item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 4px 0;
}

.page-about .about-band__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(2.2rem, 5.4vw, 3.4rem);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--neon);
  text-shadow: 0 0 16px rgba(25, 227, 209, 0.3);
}

.page-about .about-band__unit {
  font-family: var(--font-accent);
  font-weight: 900;
  font-size: 0.875rem;
  transform: skewX(-8deg);
  color: var(--ref);
}

.page-about .about-band__label {
  font-size: var(--step-caption);
  color: var(--text-mute);
  letter-spacing: 0.05em;
}

/* ---------- 03 赛季服务节奏 ---------- */
.page-about .about-season__grid {
  margin-top: clamp(28px, 4vw, 48px);
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-about .about-season__card {
  border: 1px solid var(--hair);
  border-top: 3px solid var(--jade);
  border-radius: var(--about-radius);
  background: linear-gradient(180deg, rgba(14, 42, 29, 0.6), rgba(7, 19, 15, 0.9));
  padding: 24px 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .about-season__card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card);
}

.page-about .about-season__card:nth-child(2) {
  border-top-color: var(--neon);
}

.page-about .about-season__card:nth-child(3) {
  border-top-color: var(--clay);
}

.page-about .about-season__tag {
  align-self: flex-start;
}

.page-about .about-season__title {
  margin: 2px 0 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: 1.75rem;
  letter-spacing: -0.02em;
  color: var(--snow);
}

.page-about .about-season__text {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--text-soft);
}

.page-about .about-season__deliver {
  margin: auto 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--hair-strong);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  line-height: 1.8;
  letter-spacing: 0.02em;
  color: var(--metal);
}

/* ---------- 04 团队与值班 ---------- */
.page-about .about-team__grid {
  gap: var(--about-gap);
  align-items: start;
}

.page-about .about-team__note {
  margin: 18px 0 0;
  padding-left: 16px;
  border-left: 2px solid var(--clay);
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--text-soft);
}

.page-about .about-team__roster {
  display: grid;
  gap: 14px;
}

.page-about .about-team__unit {
  border: 1px solid var(--hair);
  border-radius: var(--about-radius);
  background: var(--ink-2);
  padding: 20px 20px;
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "num label"
    "num text";
  column-gap: 18px;
  align-items: center;
}

.page-about .about-team__num {
  grid-area: num;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(2rem, 4.6vw, 2.9rem);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--snow);
}

.page-about .about-team__label {
  grid-area: label;
  margin: 0;
  font-family: var(--font-accent);
  font-weight: 700;
  font-size: 1.0625rem;
  color: var(--jade);
}

.page-about .about-team__unit p {
  grid-area: text;
  margin: 6px 0 0;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--text-soft);
}

/* ---------- 05 发展阶段 ---------- */
.page-about .about-history__tabs {
  margin-top: clamp(24px, 3.6vw, 40px);
}

.page-about .about-history__panel {
  padding-top: 24px;
}

.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-left: 1px solid var(--hair-strong);
}

.page-about .about-timeline__item {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 0 0 26px 24px;
}

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

.page-about .about-timeline__year {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.125rem;
  letter-spacing: 0.04em;
  color: var(--clay);
}

.page-about .about-timeline__dot {
  position: absolute;
  left: -5px;
  top: 8px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--clay);
  box-shadow: 0 0 0 3px var(--ink);
}

.page-about .about-timeline__dot--neon {
  background: var(--neon);
  box-shadow: 0 0 0 3px var(--ink), 0 0 14px rgba(25, 227, 209, 0.5);
}

.page-about .about-timeline__title {
  margin: 0;
  font-family: var(--font-accent);
  font-weight: 700;
  font-size: 1.0625rem;
  color: var(--snow);
}

.page-about .about-timeline__body p {
  margin: 6px 0 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--text-soft);
}

.page-about .about-history__eco {
  margin-top: clamp(32px, 5vw, 56px);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--about-gap);
  align-items: start;
  border-top: 1px solid var(--hair);
  padding-top: clamp(24px, 4vw, 40px);
}

.page-about .about-history__figure {
  margin: 0;
  border: 1px solid var(--hair);
  border-radius: var(--about-radius);
  overflow: hidden;
  background: var(--clay);
}

.page-about .about-history__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 10 / 7;
}

.page-about .about-history__ecoTitle {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.375rem, 2.6vw, 1.875rem);
  letter-spacing: -0.02em;
  color: var(--snow);
}

.page-about .about-history__ecoText p {
  margin: 0 0 14px;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--text-soft);
}

.page-about .about-link {
  display: inline-block;
  margin-top: 4px;
  color: var(--neon);
  text-decoration: none;
  border-bottom: 1px solid rgba(25, 227, 209, 0.4);
  padding-bottom: 2px;
  font-size: 0.9375rem;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

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

/* ---------- 06 合作理由 ---------- */
.page-about .about-why__grid {
  margin-top: clamp(26px, 4vw, 44px);
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--hair);
  border: 1px solid var(--hair);
  border-radius: var(--about-radius);
  overflow: hidden;
}

.page-about .about-why__item {
  background: var(--ink-2);
  padding: 24px 22px;
  display: grid;
  gap: 8px;
  transition: background var(--dur) var(--ease);
}

.page-about .about-why__item:hover {
  background: #122f21;
}

.page-about .about-why__mark {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.2em;
  color: var(--ref);
}

.page-about .about-why__title {
  margin: 0;
  font-family: var(--font-accent);
  font-weight: 900;
  font-size: 1.25rem;
  transform: skewX(-8deg);
  color: var(--snow);
}

.page-about .about-why__item p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--text-soft);
}

.page-about .about-cta {
  margin-top: clamp(28px, 4vw, 48px);
  border: 1px solid var(--hair);
  border-left: 4px solid var(--clay);
  border-radius: var(--about-radius);
  background: linear-gradient(120deg, rgba(179, 58, 34, 0.18), rgba(7, 19, 15, 0.9) 60%);
  padding: clamp(22px, 3.4vw, 34px);
  display: grid;
  gap: 18px;
}

.page-about .about-cta__text {
  margin: 0;
  max-width: 62ch;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--snow);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-pipeline {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

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

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

  .page-about .about-history__tabs .tabs__panel {
    max-width: 100%;
  }

  .page-about .about-timeline__item {
    grid-template-columns: 96px 1fr;
    gap: 0 20px;
    padding-left: 28px;
  }

  .page-about .about-timeline__year {
    grid-column: 1;
    padding-top: 4px;
  }

  .page-about .about-timeline__body {
    grid-column: 2;
  }

  .page-about .about-timeline__dot {
    top: 10px;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero__grid {
    grid-template-columns: 6.5fr 5fr;
    gap: clamp(32px, 4vw, 64px);
  }

  .page-about .about-archive__body {
    grid-template-columns: 1.35fr 1fr;
  }

  .page-about .about-team__grid {
    grid-template-columns: 1fr 1.15fr;
  }

  .page-about .about-history__eco {
    grid-template-columns: 1fr 1.1fr;
  }

  .page-about .about-cta {
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 28px;
  }
}

@media (min-width: 1180px) {
  .page-about .about-hero__rail {
    padding-left: clamp(22px, 2.6vw, 34px);
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-about .about-note,
  .page-about .about-season__card,
  .page-about .about-why__item,
  .page-about .about-index__list a,
  .page-about .about-link {
    transition: none;
  }

  .page-about .about-note:hover,
  .page-about .about-season__card:hover {
    transform: none;
  }
}