/* ============ 关于YT赛场 · 页面专属样式 ============ */

.page-about {
  --about-rail-w: 208px;
  --about-col-gap: clamp(28px, 4vw, 72px);
  --about-block-gap: clamp(56px, 7vw, 100px);
  --about-ink-soft: #35352f;
  background: var(--c-paper);
  color: var(--c-ink);
  overflow-x: hidden;
}

/* ---------- 面包屑与首屏 ---------- */

.page-about .breadcrumb {
  padding-top: 22px;
}

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(36px, 5vw, 64px) clamp(40px, 5vw, 72px);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  z-index: 0;
  right: -14vw;
  top: 6%;
  width: min(720px, 74vw);
  height: 62%;
  background: var(--c-orange);
  opacity: 0.15;
  transform: skewY(-8deg);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  z-index: 0;
  left: -6vw;
  bottom: 8%;
  width: min(340px, 42vw);
  height: 10px;
  background: var(--c-blue);
  opacity: 0.28;
  transform: skewX(-26deg);
  pointer-events: none;
}

.page-about .eyebrow {
  position: relative;
  z-index: 1;
  color: var(--c-orange);
}

.page-about .about-hero__title {
  position: relative;
  z-index: 1;
  margin: 14px 0 0;
  max-width: 16em;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(34px, 6vw, 84px);
  line-height: 1.04;
  letter-spacing: 0.02em;
  text-wrap: balance;
}

.page-about .about-hero__lead {
  position: relative;
  z-index: 1;
  margin: clamp(18px, 2.6vw, 30px) 0 0;
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--about-ink-soft);
}

.page-about .about-facts {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 0 34px;
  margin: clamp(28px, 4vw, 48px) 0 0;
  padding: 18px 0 0;
  list-style: none;
  border-top: 1px solid var(--c-sand);
}

.page-about .about-fact {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px;
  min-width: 130px;
  padding-bottom: 6px;
}

.page-about .about-fact__num {
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.2vw, 36px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
  color: var(--c-ink);
}

.page-about .about-fact__unit {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--c-orange);
}

.page-about .about-fact__label {
  flex: 1 0 100%;
  font-size: 13px;
  line-height: 1.5;
  color: var(--c-stone);
}

/* ---------- 双栏骨架：左索引 · 右长文 ---------- */

.page-about .about-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(34px, 5vw, 60px);
  padding-bottom: clamp(56px, 7vw, 104px);
}

.page-about .about-rail {
  order: 2;
  border-top: 1px solid var(--c-sand);
  padding-top: 18px;
}

.page-about .about-rail__head {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-stone);
}

.page-about .about-index {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-index__link {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 6px 0;
  font-size: 14px;
  color: var(--c-ink);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .about-index__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--c-orange);
}

.page-about .about-index__link:hover,
.page-about .about-index__link:focus-visible {
  color: var(--c-orange-deep);
  border-bottom-color: var(--c-orange);
}

.page-about .about-main {
  order: 1;
  min-width: 0;
}

/* ---------- 章节通用 ---------- */

.page-about .about-block {
  scroll-margin-top: calc(var(--hdr-h) + 28px);
}

.page-about .about-block + .about-block {
  margin-top: var(--about-block-gap);
}

.page-about .about-title {
  margin: 12px 0 20px;
  max-width: 24em;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(23px, 2.5vw, 34px);
  line-height: 1.2;
  letter-spacing: 0.04em;
}

.page-about .about-body p {
  margin: 0 0 1.05em;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--about-ink-soft);
}

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

.page-about .about-inline-link {
  margin: 22px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-stone);
}

.page-about .about-inline-link a {
  color: var(--c-blue);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 2px solid var(--c-blue-soft);
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-about .about-inline-link a:hover,
.page-about .about-inline-link a:focus-visible {
  color: var(--c-orange-deep);
  border-bottom-color: var(--c-orange);
}

/* ---------- 团队：左文右图 ---------- */

.page-about .about-team {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3vw, 40px);
  align-items: start;
}

.page-about .about-figure {
  margin: 0;
  min-width: 0;
}

.page-about .about-figure__frame {
  overflow: hidden;
  border: 1px solid var(--c-ink);
  border-radius: var(--r);
  background: var(--c-night);
  box-shadow: 8px 8px 0 var(--c-sand);
}

.page-about .about-figure--team .about-figure__frame {
  box-shadow: 8px 8px 0 var(--c-orange);
}

.page-about .about-figure__frame img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 1000 / 1300;
}

.page-about .about-figure--coop .about-figure__frame img {
  aspect-ratio: 1200 / 800;
}

.page-about .about-figure figcaption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.05em;
  color: var(--c-stone);
}

/* ---------- 数据行 ---------- */

.page-about .about-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 0 30px;
  margin: 26px 0 0;
  padding: 16px 0 0;
  list-style: none;
  border-top: 1px solid var(--c-sand);
}

.page-about .about-metrics--wide {
  margin-top: 28px;
}

.page-about .about-metric {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 3px;
  min-width: 118px;
  padding-bottom: 8px;
}

.page-about .about-metric__num {
  font-family: var(--font-mono);
  font-size: clamp(22px, 2.6vw, 30px);
  font-weight: 700;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
  color: var(--c-ink);
}

.page-about .about-metric__num--accent {
  color: var(--c-orange);
}

.page-about .about-metric__unit {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--c-stone);
}

.page-about .about-metric__label {
  flex: 1 0 100%;
  font-size: 13px;
  line-height: 1.5;
  color: var(--c-stone);
}

/* ---------- 赛季横向主题带 ---------- */

.page-about .about-season {
  position: relative;
  display: flex;
  align-items: flex-end;
  min-height: 300px;
  margin: 20px 0 26px;
  overflow: hidden;
  border: 1px solid var(--c-ink);
  border-radius: var(--r);
  background: var(--c-night);
}

.page-about .about-season__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.58;
}

.page-about .about-season::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(14, 16, 19, 0.34) 0%, rgba(14, 16, 19, 0.9) 76%);
}

.page-about .about-season__body {
  position: relative;
  z-index: 1;
  padding: clamp(22px, 4vw, 44px);
  max-width: 46em;
}

.page-about .about-season__title {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(21px, 2.3vw, 30px);
  line-height: 1.22;
  letter-spacing: 0.04em;
  color: var(--c-paper);
}

.page-about .about-season__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(247, 242, 232, 0.84);
}

/* ---------- 赛季四阶段 ---------- */

.page-about .about-stages {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-stage {
  position: relative;
  overflow: hidden;
  padding: 18px 18px 20px 22px;
  border: 1px solid var(--c-ink);
  border-radius: var(--r);
  background: var(--c-paper);
  box-shadow: 5px 5px 0 var(--c-sand-light);
  transition: transform 0.22s var(--ease), box-shadow 0.22s var(--ease);
}

.page-about .about-stage::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 4px;
  height: 100%;
  background: var(--stage-accent, var(--c-orange));
}

.page-about .about-stage:nth-child(1) { --stage-accent: var(--c-orange); }
.page-about .about-stage:nth-child(2) { --stage-accent: var(--c-blue); }
.page-about .about-stage:nth-child(3) { --stage-accent: var(--c-moss); }
.page-about .about-stage:nth-child(4) { --stage-accent: var(--c-orange-deep); }

.page-about .about-stage:hover {
  transform: translateY(-4px);
  box-shadow: 7px 7px 0 var(--c-sand);
}

.page-about .about-stage__step {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--stage-accent, var(--c-orange));
}

.page-about .about-stage__title {
  margin: 8px 0 8px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 17px;
  line-height: 1.35;
  letter-spacing: 0.03em;
}

.page-about .about-stage p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--about-ink-soft);
}

/* ---------- 数据与名单双面板 ---------- */

.page-about .about-data {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.page-about .about-panel {
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--c-ink);
  border-radius: var(--r);
  background: var(--c-paper);
  box-shadow: 8px 8px 0 var(--c-sand);
}

.page-about .about-panel--blue {
  background: var(--c-blue-soft);
  box-shadow: 8px 8px 0 var(--c-blue);
}

.page-about .about-panel__title {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 18px;
  line-height: 1.35;
  letter-spacing: 0.04em;
}

.page-about .about-panel p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--about-ink-soft);
}

/* ---------- 合作徽章 ---------- */

.page-about .about-coops {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-coop {
  padding: 14px 16px;
  border: 1px solid var(--c-ink);
  border-left: 4px solid var(--c-moss);
  border-radius: var(--r);
  background: var(--c-paper);
  transition: transform 0.22s var(--ease), box-shadow 0.22s var(--ease), border-left-color 0.22s var(--ease);
}

.page-about .about-coop:hover,
.page-about .about-coop:focus-within {
  transform: translateY(-4px);
  border-left-color: var(--c-orange);
  box-shadow: 6px 6px 0 var(--c-sand-light);
}

.page-about .about-coop__dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--c-moss);
  vertical-align: 1px;
}

.page-about .about-coop__name {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 15px;
  letter-spacing: 0.03em;
}

.page-about .about-coop__hint {
  display: block;
  margin: 7px 0 0 16px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--c-stone);
  opacity: 0.9;
  transition: opacity 0.22s var(--ease), color 0.22s var(--ease);
}

.page-about .about-coop:hover .about-coop__hint,
.page-about .about-coop:focus-within .about-coop__hint {
  opacity: 1;
  color: var(--c-ink);
}

.page-about .about-figure--coop {
  margin-top: 28px;
}

/* ---------- 下一步 ---------- */

.page-about .about-next {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin-top: 26px;
}

.page-about .about-next__card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--c-ink);
  border-radius: var(--r);
  background: var(--c-paper);
  box-shadow: 8px 8px 0 var(--c-sand);
}

.page-about .about-next__card--dark {
  background: var(--c-ink);
  border-color: var(--c-ink);
  box-shadow: 8px 8px 0 var(--c-orange);
}

.page-about .about-next__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 19px;
  line-height: 1.35;
  letter-spacing: 0.04em;
}

.page-about .about-next__card p {
  margin: 0;
  flex: 1 1 auto;
  font-size: 15px;
  line-height: 1.78;
  color: var(--about-ink-soft);
}

.page-about .about-next__card--dark .about-next__title {
  color: var(--c-paper);
}

.page-about .about-next__card--dark p {
  color: rgba(247, 242, 232, 0.82);
}

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

/* ---------- 小屏到中屏 ---------- */

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

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

@media (min-width: 860px) {
  .page-about .about-season {
    min-height: 340px;
  }

  .page-about .about-team {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  }

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

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

@media (min-width: 900px) {
  .page-about .about-layout {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
    gap: var(--about-col-gap);
  }

  .page-about .about-rail {
    order: 0;
    position: sticky;
    top: calc(var(--hdr-h) + 26px);
    align-self: start;
    padding-top: 14px;
    border-top: 0;
    border-left: 2px solid var(--c-sand);
    padding-left: 18px;
  }

  .page-about .about-index {
    flex-direction: column;
    gap: 2px;
  }

  .page-about .about-index__link {
    width: 100%;
    padding: 8px 0;
  }

  .page-about .about-main {
    order: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-stage,
  .page-about .about-coop {
    transition: none;
  }

  .page-about .about-stage:hover,
  .page-about .about-coop:hover,
  .page-about .about-coop:focus-within {
    transform: none;
  }
}
</final>
</result>