.page-about {
  --about-r: 18px;
  --about-line: rgba(169, 203, 218, 0.5);
  display: block;
}

/* ============ 首屏 ============ */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  background: var(--ink-deep);
  color: var(--snow);
  padding: calc(var(--h-header) + 40px) 0 64px;
  isolation: isolate;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(118deg, transparent 38%, rgba(30, 95, 122, 0.82) 38.15%, rgba(30, 95, 122, 0.14) 92%);
  pointer-events: none;
  z-index: -1;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -12%;
  bottom: -34%;
  width: min(620px, 82vw);
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle at 40% 40%, rgba(242, 106, 33, 0.24), rgba(242, 106, 33, 0) 68%);
  pointer-events: none;
  z-index: -1;
}

.page-about .about-hero-shell {
  position: relative;
}

.page-about .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: rgba(169, 203, 218, 0.85);
  margin-bottom: 28px;
}

.page-about .crumbs a {
  color: rgba(244, 247, 248, 0.82);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-about .crumbs a:hover {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

.page-about .crumbs span[aria-current="page"] {
  color: var(--snow);
}

.page-about .about-kicker {
  margin: 0 0 16px;
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-about .about-title {
  margin: 0;
  max-width: 17em;
  font-size: clamp(28px, 6.4vw, 52px);
  line-height: 1.18;
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--snow);
}

.page-about .about-lead {
  margin: 24px 0 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(244, 247, 248, 0.82);
}

.page-about .about-anchors {
  list-style: none;
  margin: 44px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: rgba(169, 203, 218, 0.22);
  border-radius: var(--about-r);
  overflow: hidden;
}

.page-about .about-anchor {
  background: rgba(255, 255, 255, 0.045);
  padding: 22px 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-about .about-anchor .figure-num {
  font-family: var(--font-num);
  font-size: clamp(34px, 8vw, 54px);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--ember);
  transition: font-weight 0.3s var(--ease);
}

.page-about .about-anchor .figure-num.is-in {
  font-weight: 900;
}

.page-about .about-anchor .figure-unit {
  font-size: 13px;
  font-weight: 500;
  color: rgba(244, 247, 248, 0.72);
  margin-top: 2px;
}

.page-about .about-anchor .figure-note {
  font-size: 13px;
  line-height: 1.6;
  color: rgba(169, 203, 218, 0.9);
  margin-top: 8px;
}

/* ============ 区块标题组 ============ */
.page-about .about-head {
  max-width: 760px;
}

.page-about .about-head .band-title {
  margin: 0;
  font-size: clamp(24px, 5vw, 42px);
  font-weight: 900;
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--graphite);
}

.page-about .about-head .band-lead {
  margin: 18px 0 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--body-ink);
}

.page-about .about-head .kicker {
  margin: 0 0 12px;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--ink);
}

.page-about .about-head .kicker::before {
  content: "";
  display: inline-block;
  width: 22px;
  height: 3px;
  background: var(--ember);
  border-radius: 3px;
  margin-right: 10px;
  vertical-align: middle;
}

/* ============ 年份跳转 ============ */
.page-about .about-jump {
  display: flex;
  gap: 8px;
  margin-top: 26px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: thin;
}

.page-about .about-jump a {
  flex: 0 0 auto;
  font-family: var(--font-num);
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
  padding: 7px 16px;
  border: 1px solid var(--ink-soft);
  border-radius: var(--r-pill);
  background: var(--snow);
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .about-jump a:hover,
.page-about .about-jump a:focus-visible {
  background: var(--ember);
  border-color: var(--ember);
  color: var(--snow);
}

/* ============ 时间轴 ============ */
.page-about .about-rail-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: 48px;
}

.page-about .about-rail-anno {
  margin: 0;
  writing-mode: vertical-rl;
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--lead);
  justify-self: start;
}

.page-about .about-rail {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-node {
  position: relative;
  padding-left: 30px;
  padding-bottom: 48px;
}

.page-about .about-node::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 22px;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--ink-soft), rgba(169, 203, 218, 0.15));
}

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

.page-about .about-node:last-child::before {
  display: none;
}

.page-about .about-node::after {
  content: "";
  position: absolute;
  left: 1px;
  top: 12px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--frost);
  border: 2px solid var(--ink-soft);
  transition: background 0.25s var(--ease), border-color 0.25s var(--ease), transform 0.25s var(--ease);
}

.page-about .about-node.is-in::after,
.page-about .about-node:hover::after {
  background: var(--ember);
  border-color: var(--ember);
  transform: scale(1.15);
}

.page-about .about-node-time {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin: 0 0 12px;
}

.page-about .about-node-time .rail-time {
  font-family: var(--font-num);
  font-size: clamp(30px, 7vw, 44px);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--ink-deep);
}

.page-about .about-node-title {
  margin: 0 0 12px;
  font-size: clamp(19px, 3.4vw, 24px);
  font-weight: 900;
  line-height: 1.35;
  color: var(--graphite);
}

.page-about .about-node-main p {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--body-ink);
  max-width: 62ch;
}

.page-about .about-node-main p a {
  color: var(--ink);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid var(--ink-soft);
}

.page-about .about-node-main p a:hover {
  color: var(--ember);
  border-bottom-color: var(--ember);
}

.page-about .about-node-figure {
  margin: 20px 0 18px;
  border-radius: var(--about-r);
  overflow: hidden;
  background: linear-gradient(140deg, var(--ink-soft), var(--frost) 70%);
}

.page-about .about-node-figure img,
.page-about .about-team-figure img,
.page-about .about-shift-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .about-figcap {
  display: block;
  padding: 12px 16px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--lead);
  background: var(--snow);
  border-top: 1px solid rgba(169, 203, 218, 0.5);
}

.page-about .about-node-note {
  border-left: 3px solid var(--amber);
  padding: 4px 0 4px 16px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--lead);
  max-width: 58ch;
}

/* ============ 团队 ============ */
.page-about .about-team-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  margin-top: 40px;
}

.page-about .about-team-figure {
  margin: 0;
  border-radius: var(--about-r);
  overflow: hidden;
  background: linear-gradient(150deg, var(--ink-soft), var(--frost) 72%);
}

.page-about .about-crew {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .about-crew-card {
  position: relative;
  background: var(--frost);
  border: 1px solid rgba(169, 203, 218, 0.6);
  border-radius: var(--about-r);
  padding: 22px 22px 20px;
  outline: none;
  transition: border-color 0.24s var(--ease), transform 0.24s var(--ease), background 0.24s var(--ease);
}

.page-about .about-crew-card:hover,
.page-about .about-crew-card:focus-visible {
  border-color: var(--ember);
  background: var(--snow);
  transform: translateY(-3px);
}

.page-about .about-crew-seq {
  margin: 0 0 10px;
  font-family: var(--font-num);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--ember);
}

.page-about .about-crew-title {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 900;
  line-height: 1.4;
  color: var(--graphite);
}

.page-about .about-crew-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--body-ink);
}

.page-about .about-crew-more {
  display: grid;
  grid-template-rows: 1fr;
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--lead);
}

.page-about .about-crew-more > span {
  overflow: hidden;
  padding-top: 10px;
  border-top: 1px dashed rgba(169, 203, 218, 0.9);
  margin-top: 12px;
}

/* ============ 排班 ============ */
.page-about .about-shift-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  margin-top: 40px;
}

.page-about .about-shift-figure {
  margin: 0;
  border-radius: var(--about-r);
  overflow: hidden;
  background: linear-gradient(150deg, var(--ink-soft), var(--frost) 72%);
}

.page-about .about-grid {
  border-radius: var(--about-r);
  overflow: hidden;
  border: 1px solid rgba(169, 203, 218, 0.75);
  background: var(--snow);
  align-self: start;
}

.page-about .about-grid-row {
  display: grid;
  grid-template-columns: minmax(64px, 0.8fr) 1fr 1.3fr;
  gap: 1px;
  background: rgba(169, 203, 218, 0.55);
  transition: background 0.2s var(--ease);
}

.page-about .about-grid-row > * {
  background: var(--snow);
  padding: 14px 12px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--body-ink);
}

.page-about .about-grid-head > * {
  background: var(--ink-deep);
  color: var(--snow);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.page-about .about-slot {
  font-family: var(--font-num);
  font-weight: 700;
  color: var(--ink-deep);
}

.page-about .about-cell.is-on {
  color: var(--jade);
  font-weight: 700;
}

.page-about .about-cell.is-part {
  color: var(--lead);
}

.page-about .about-grid-row:not(.about-grid-head):hover > * {
  background: rgba(255, 178, 94, 0.2);
}

.page-about .about-shift-note {
  margin: 28px 0 0;
  padding: 20px 22px;
  border-radius: var(--about-r);
  background: rgba(30, 95, 122, 0.08);
  border-left: 3px solid var(--ink);
  font-size: 15px;
  line-height: 1.85;
  color: var(--body-ink);
}

/* ============ 记录 ============ */
.page-about .about-record .about-head .band-title {
  color: var(--snow);
}

.page-about .about-record .about-head .band-lead {
  color: rgba(244, 247, 248, 0.8);
}

.page-about .about-record .about-head .kicker {
  color: var(--amber);
}

.page-about .about-steps {
  list-style: none;
  margin: 44px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about .about-step {
  position: relative;
  padding: 22px 22px 22px 26px;
  border-radius: var(--about-r);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(169, 203, 218, 0.22);
  transition: background 0.24s var(--ease), border-color 0.24s var(--ease);
}

.page-about .about-step:hover {
  background: rgba(242, 106, 33, 0.12);
  border-color: rgba(242, 106, 33, 0.6);
}

.page-about .about-step-seq {
  display: block;
  font-family: var(--font-num);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--amber);
  margin-bottom: 10px;
}

.page-about .about-step-title {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 900;
  color: var(--snow);
}

.page-about .about-step p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(244, 247, 248, 0.78);
}

.page-about .about-record-note {
  margin: 32px 0 0;
  padding: 20px 22px;
  border-radius: var(--about-r);
  background: rgba(255, 255, 255, 0.04);
  border: 1px dashed rgba(169, 203, 218, 0.5);
  font-size: 15px;
  line-height: 1.85;
  color: rgba(244, 247, 248, 0.8);
}

.page-about .about-record-note a {
  color: var(--amber);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 178, 94, 0.6);
}

.page-about .about-record-note a:hover {
  color: var(--snow);
  border-bottom-color: var(--snow);
}

/* ============ 下一步 ============ */
.page-about .about-next-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: 36px;
}

.page-about .about-next-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 28px 26px 26px;
  border-radius: var(--about-r);
  background: var(--frost);
  border: 1px solid rgba(169, 203, 218, 0.65);
  text-decoration: none;
  transition: transform 0.24s var(--ease), border-color 0.24s var(--ease), box-shadow 0.24s var(--ease);
}

.page-about .about-next-card:hover,
.page-about .about-next-card:focus-visible {
  transform: translateY(-4px);
  border-color: var(--ember);
  box-shadow: 0 14px 32px -20px rgba(28, 31, 34, 0.55);
}

.page-about .about-next-seq {
  margin: 0;
  font-family: var(--font-num);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--ink);
}

.page-about .about-next-title {
  margin: 0;
  font-size: clamp(19px, 3.6vw, 23px);
  font-weight: 900;
  line-height: 1.38;
  color: var(--graphite);
}

.page-about .about-next-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.82;
  color: var(--body-ink);
}

.page-about .about-next-go {
  margin-top: auto;
  align-self: flex-start;
  font-size: 14px;
  font-weight: 700;
  color: var(--snow);
  background: var(--ember);
  border-radius: var(--r-pill);
  padding: 10px 22px;
  transition: background 0.2s var(--ease);
}

.page-about .about-next-card:hover .about-next-go {
  background: var(--ink-deep);
}

.page-about .about-next-foot {
  margin: 30px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--lead);
}

.page-about .about-next-foot a {
  color: var(--ink);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid var(--ink-soft);
}

.page-about .about-next-foot a:hover {
  color: var(--ember);
  border-bottom-color: var(--ember);
}

/* ============ 响应式 ============ */
@media (min-width: 640px) {
  .page-about .about-hero {
    padding: calc(var(--h-header) + 56px) 0 88px;
  }

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

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

  .page-about .about-steps {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

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

@media (min-width: 900px) {
  .page-about .about-anchors {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .about-rail-layout {
    grid-template-columns: 60px minmax(0, 1fr);
    gap: 36px;
  }

  .page-about .about-node {
    padding-left: 40px;
    padding-bottom: 64px;
  }

  .page-about .about-node::before {
    left: 9px;
  }

  .page-about .about-node::after {
    left: 3px;
  }

  .page-about .about-team-layout {
    grid-template-columns: minmax(0, 320px) minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

  .page-about .about-shift-layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 460px);
    gap: 40px;
    align-items: start;
  }

  .page-about .about-steps {
    grid-template-columns: repeat(5, 1fr);
  }

  .page-about .about-crew-more {
    grid-template-rows: 0fr;
    opacity: 0;
    transition: grid-template-rows 0.28s var(--ease), opacity 0.28s var(--ease);
  }

  .page-about .about-crew-card:hover .about-crew-more,
  .page-about .about-crew-card:focus-visible .about-crew-more,
  .page-about .about-crew-card:focus-within .about-crew-more {
    grid-template-rows: 1fr;
    opacity: 1;
  }
}

@media (min-width: 1100px) {
  .page-about .about-hero::before {
    background:
      linear-gradient(112deg, transparent 44%, rgba(30, 95, 122, 0.86) 44.15%, rgba(30, 95, 122, 0.08) 96%);
  }
}
<<<END>>>