.page-about {
  --about-rail-w: 232px;
  --about-line: 1px solid var(--grid-600);
  background: var(--ink-900);
  color: var(--white-100);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: 28px 0 56px;
}
.page-about .about-hero-inner {
  position: relative;
}
.page-about .about-hero .breadcrumb {
  margin-bottom: 40px;
}
.page-about .about-eyebrow {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--muted-400);
}
.page-about .about-hero-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(42px, 10.5vw, 106px);
  line-height: .96;
  letter-spacing: -.015em;
  max-width: 13ch;
}
.page-about .about-hero-title em {
  font-style: normal;
  color: var(--neon-500);
}
.page-about .about-hero-lede {
  margin: 30px 0 0;
  max-width: 62ch;
  font-size: 17px;
  line-height: 1.8;
  color: var(--muted-400);
}
.page-about .about-hero-lede .num {
  color: var(--white-100);
}
.page-about .about-hero-stats {
  list-style: none;
  margin: 48px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--grid-600);
  border: 1px solid var(--grid-600);
}
.page-about .about-hero-stat {
  background: var(--ink-900);
  padding: 22px 18px 20px;
}
.page-about .hs-num {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(34px, 7vw, 46px);
  line-height: 1;
  color: var(--neon-500);
}
.page-about .hs-key {
  display: block;
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--muted-400);
}
.page-about .about-hero-anno {
  display: none;
}

/* ---------- 首屏主视觉 ---------- */
.page-about .about-hero-media {
  position: relative;
  margin: 0;
  border-top: var(--about-line);
  border-bottom: var(--about-line);
  overflow: hidden;
}
.page-about .about-hero-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
  filter: saturate(.9);
}
.page-about .about-hero-media figcaption {
  position: absolute;
  left: 0;
  bottom: 0;
  max-width: 90%;
  padding: 10px 16px;
  background: rgba(4, 18, 14, .82);
  border-top: var(--about-line);
  border-right: var(--about-line);
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted-400);
}

/* ---------- 主体骨架 ---------- */
.page-about .about-body {
  padding: 64px 0 0;
}
.page-about .about-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 44px;
}

/* ---------- 左侧固定导航 ---------- */
.page-about .about-rail {
  border-top: 2px solid var(--neon-500);
  padding-top: 18px;
}
.page-about .about-rail-note {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--muted-400);
}
.page-about .about-rail-list {
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: flex;
  gap: 4px;
  overflow-x: auto;
  scrollbar-width: none;
}
.page-about .about-rail-list::-webkit-scrollbar {
  display: none;
}
.page-about .about-rail-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 14px;
  white-space: nowrap;
  font-size: 14px;
  text-decoration: none;
  color: var(--muted-400);
  border-left: 2px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}
.page-about .about-rail-link:hover,
.page-about .about-rail-link:focus-visible {
  color: var(--white-100);
  border-left-color: var(--neon-500);
  background: var(--ink-800);
}
.page-about .about-rail-idx {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--muted-400);
  opacity: .6;
  transition: color .2s var(--ease), opacity .2s var(--ease);
}
.page-about .about-rail-link:hover .about-rail-idx,
.page-about .about-rail-link:focus-visible .about-rail-idx {
  color: var(--neon-500);
  opacity: 1;
}

/* ---------- 章节通用 ---------- */
.page-about .about-stream {
  min-width: 0;
}
.page-about .about-section {
  padding-bottom: 88px;
}
.page-about .about-section:last-of-type {
  padding-bottom: 56px;
}
.page-about .about-sec-head {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  padding-top: 20px;
  border-top: var(--about-line);
  margin-bottom: 36px;
}
.page-about .about-sec-index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--neon-500);
}
.page-about .about-sec-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(26px, 5.4vw, 44px);
  line-height: 1.06;
  letter-spacing: -.01em;
}
.page-about .about-sec-lede {
  margin: 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted-400);
}

/* ---------- 01 岗位 ---------- */
.page-about .role-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--grid-600);
  border: 1px solid var(--grid-600);
}
.page-about .role-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 26px 22px 24px;
  background: var(--ink-900);
  transition: background .24s var(--ease);
}
.page-about .role-card:hover,
.page-about .role-card:focus-within {
  background: var(--panel-700);
}
.page-about .role-abbr {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted-400);
}
.page-about .role-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(40px, 8vw, 62px);
  line-height: 1;
  color: var(--neon-500);
}
.page-about .role-name {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 21px;
  line-height: 1.25;
}
.page-about .role-desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted-400);
}
.page-about .role-keys {
  margin: 4px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--muted-400);
  opacity: .55;
  transition: color .24s var(--ease), opacity .24s var(--ease);
}
.page-about .role-card:hover .role-keys,
.page-about .role-card:focus-within .role-keys {
  color: var(--violet-500);
  opacity: 1;
}

/* ---------- 02 资料来源 ---------- */
.page-about .split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
}
.page-about .source-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-about .source-item {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  column-gap: 16px;
  padding: 24px 0;
  border-top: var(--about-line);
}
.page-about .source-item:last-child {
  border-bottom: var(--about-line);
}
.page-about .source-idx {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--orange-500);
  padding-top: 4px;
}
.page-about .source-body h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 21px;
  line-height: 1.3;
}
.page-about .source-body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted-400);
}
.page-about .split-figure {
  margin: 0;
}
.page-about .split-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: var(--about-line);
}
.page-about .split-figure figcaption {
  margin-top: 12px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted-400);
}

/* ---------- 03 排班 ---------- */
.page-about .shift-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}
.page-about .shift-copy p {
  margin: 0 0 18px;
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--muted-400);
}
.page-about .shift-copy p:last-child {
  margin-bottom: 0;
}
.page-about .shift-facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--grid-600);
  border: 1px solid var(--grid-600);
  align-self: start;
}
.page-about .shift-fact {
  background: var(--panel-700);
  padding: 18px 18px 16px;
  display: flex;
  align-items: baseline;
  gap: 6px;
  flex-wrap: wrap;
}
.page-about .sf-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 34px;
  line-height: 1;
  color: var(--neon-500);
}
.page-about .sf-unit {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--muted-400);
}
.page-about .sf-key {
  flex: 1 1 100%;
  font-size: 13px;
  line-height: 1.5;
  color: var(--muted-400);
}
.page-about .about-figure {
  margin: 36px 0 0;
}
.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: var(--about-line);
}
.page-about .about-figure figcaption {
  margin-top: 12px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted-400);
}

/* ---------- 04 赛季时间线 ---------- */
.page-about .timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 8px;
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(230px, 250px);
  gap: 0;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  scrollbar-width: thin;
}
.page-about .timeline::-webkit-scrollbar {
  height: 2px;
}
.page-about .timeline::-webkit-scrollbar-thumb {
  background: var(--grid-600);
}
.page-about .tl-item {
  position: relative;
  padding: 52px 22px 22px 0;
  scroll-snap-align: start;
}
.page-about .tl-item::before {
  content: "";
  position: absolute;
  top: 34px;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--grid-600);
}
.page-about .tl-item:last-child::before {
  right: 22px;
}
.page-about .tl-mark {
  position: absolute;
  top: 28px;
  left: 0;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--neon-500);
  transition: transform .24s var(--ease);
}
.page-about .tl-item:hover .tl-mark,
.page-about .tl-item:focus-within .tl-mark {
  transform: scale(1.4);
}
.page-about .tl-year {
  position: absolute;
  top: 0;
  left: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 22px;
  letter-spacing: .02em;
  color: var(--white-100);
}
.page-about .tl-tag {
  display: inline-block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--violet-500);
}
.page-about .tl-title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 20px;
  line-height: 1.3;
}
.page-about .tl-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted-400);
}
.page-about .about-inline-link {
  margin: 28px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted-400);
}
.page-about .about-inline-link a {
  color: var(--neon-500);
  text-decoration: none;
  border-bottom: 1px solid var(--grid-600);
  padding-bottom: 2px;
}
.page-about .about-inline-link a:hover {
  border-bottom-color: var(--neon-500);
}

/* ---------- 05 用户改动 ---------- */
.page-about .change-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-about .change-item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 6px 16px;
  padding: 24px 0;
  border-top: var(--about-line);
  transition: background .24s var(--ease);
}
.page-about .change-item:last-child {
  border-bottom: var(--about-line);
}
.page-about .change-item:hover {
  background: var(--ink-800);
}
.page-about .change-idx {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--orange-500);
  padding-top: 4px;
}
.page-about .change-body h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 21px;
  line-height: 1.3;
}
.page-about .change-body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted-400);
}
.page-about .change-link {
  grid-column: 2 / 3;
  justify-self: start;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  text-decoration: none;
  color: var(--neon-500);
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: border-color .2s var(--ease);
}
.page-about .change-link:hover,
.page-about .change-link:focus-visible {
  border-bottom-color: var(--neon-500);
}

/* ---------- 06 合作与认可 ---------- */
.page-about .partner-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--grid-600);
  border: 1px solid var(--grid-600);
}
.page-about .partner-col {
  background: var(--ink-900);
  padding: 28px 24px;
}
.page-about .partner-col--mint {
  background: var(--panel-700);
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.page-about .partner-title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 22px;
  line-height: 1.3;
}
.page-about .partner-col p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted-400);
}
.page-about .partner-tags {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.page-about .partner-col p.partner-foot {
  margin-top: 18px;
}
.page-about .partner-foot a {
  color: var(--neon-500);
  text-decoration: none;
  border-bottom: 1px solid var(--grid-600);
  padding-bottom: 2px;
}
.page-about .partner-foot a:hover {
  border-bottom-color: var(--neon-500);
}
.page-about .partner-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(64px, 14vw, 96px);
  line-height: .95;
  color: var(--neon-500);
}
.page-about .partner-num-key {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted-400);
}
.page-about .partner-col p.partner-note {
  margin-top: 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted-400);
}

/* ---------- 收尾 ---------- */
.page-about .about-outro {
  background: var(--neon-500);
  color: var(--ink-900);
  padding: 44px 0;
}
.page-about .about-outro-inner {
  display: flex;
  flex-direction: column;
  gap: 22px;
}
.page-about .about-outro-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(26px, 5.5vw, 40px);
  line-height: 1.1;
}
.page-about .about-outro-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 32px;
}
.page-about .about-outro-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: .04em;
  text-decoration: none;
  color: var(--ink-900);
  border-bottom: 2px solid rgba(4, 18, 14, .35);
  padding-bottom: 4px;
  transition: border-color .2s var(--ease);
}
.page-about .about-outro-link:hover,
.page-about .about-outro-link:focus-visible {
  border-bottom-color: var(--ink-900);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .about-outro-inner {
    flex-direction: row;
    align-items: flex-end;
    justify-content: space-between;
  }
  .page-about .about-hero-media figcaption {
    padding: 12px 20px;
  }
}

@media (min-width: 760px) {
  .page-about .about-hero-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .role-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .shift-facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .shift-fact {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }
  .page-about .sf-key {
    flex: 0 0 auto;
  }
  .page-about .change-item {
    grid-template-columns: 56px minmax(0, 1fr) 140px;
    align-items: baseline;
  }
  .page-about .change-link {
    grid-column: 3 / 4;
    justify-self: end;
  }
  .page-about .partner-grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  }
}

@media (min-width: 960px) {
  .page-about .about-layout {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
    gap: 64px;
    align-items: start;
  }
  .page-about .about-rail {
    position: sticky;
    top: calc(var(--header-h) + 34px);
  }
  .page-about .about-rail-list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
  }
  .page-about .about-rail-link {
    white-space: normal;
    padding: 11px 14px;
    font-size: 13.5px;
    line-height: 1.5;
  }
  .page-about .about-sec-head {
    grid-template-columns: 132px minmax(0, 1fr);
    grid-template-areas:
      "idx title"
      "idx lede";
    column-gap: 32px;
    row-gap: 12px;
  }
  .page-about .about-sec-index {
    grid-area: idx;
    padding-top: 8px;
  }
  .page-about .about-sec-title {
    grid-area: title;
  }
  .page-about .about-sec-lede {
    grid-area: lede;
  }
  .page-about .split {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    gap: 56px;
    align-items: start;
  }
  .page-about .shift-layout {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }
}

@media (min-width: 1080px) {
  .page-about .role-grid {
    grid-template-columns: 1.02fr 1.28fr 1.16fr .94fr;
  }
  .page-about .about-hero-media img {
    aspect-ratio: 21 / 9;
  }
  .page-about .about-figure img {
    aspect-ratio: 21 / 9;
  }
}

@media (min-width: 1100px) {
  .page-about .about-hero-anno {
    display: block;
    position: absolute;
    right: 0;
    top: 4px;
    writing-mode: vertical-rl;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: .26em;
    color: var(--muted-400);
    opacity: .7;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .role-card,
  .page-about .change-item,
  .page-about .about-rail-link,
  .page-about .about-rail-idx,
  .page-about .role-keys,
  .page-about .tl-mark,
  .page-about .change-link {
    transition: none;
  }
  .page-about .tl-item:hover .tl-mark,
  .page-about .tl-item:focus-within .tl-mark {
    transform: none;
  }
}
<<<END>>>