.page-about {
  --about-pad: clamp(62px, 10vw, 138px);
  --about-rule: rgba(154, 169, 191, .16);
  background: var(--night-base);
  color: var(--text-primary);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-about .about-inner {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  isolation: isolate;
  padding-block: clamp(46px, 8vw, 104px) clamp(46px, 7vw, 86px);
  background:
    radial-gradient(130% 100% at 92% -20%, var(--glow-lime), transparent 60%),
    radial-gradient(90% 82% at 0% 8%, var(--glow-cyan), transparent 58%),
    var(--night-base);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 52%;
  z-index: -1;
  pointer-events: none;
  opacity: .5;
  background-image: repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 76px);
  -webkit-mask-image: linear-gradient(to top, rgba(0, 0, 0, .85), transparent);
  mask-image: linear-gradient(to top, rgba(0, 0, 0, .85), transparent);
}

.page-about .about-hero .breadcrumb {
  margin-bottom: clamp(26px, 4.5vw, 46px);
}

.page-about .about-hero .eyebrow {
  margin-bottom: clamp(14px, 2vw, 20px);
}

.page-about .about-hero__title {
  margin: 0 0 clamp(20px, 3vw, 30px);
  max-width: 17ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(33px, 7.2vw, 76px);
  line-height: 1.03;
  letter-spacing: -.015em;
  text-wrap: balance;
}

.page-about .about-hero__title em {
  font-style: normal;
  background: linear-gradient(96deg, var(--lime-signal), var(--sky-cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}

.page-about .about-hero__lede {
  margin: 0;
  max-width: 62ch;
  font-size: clamp(15.5px, 1.85vw, 18px);
  line-height: 1.8;
  color: var(--text-muted);
}

.page-about .about-meta {
  list-style: none;
  margin: clamp(34px, 5vw, 58px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--about-rule);
  border-block: 1px solid var(--about-rule);
}

.page-about .about-meta__item {
  background: var(--night-base);
  padding: clamp(16px, 2.4vw, 26px) clamp(12px, 2vw, 22px);
  display: grid;
  gap: 7px;
  align-content: start;
}

.page-about .about-meta__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(24px, 3.6vw, 38px);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--lime-signal);
}

.page-about .about-meta__label {
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--text-muted);
}

/* ---------- 通用章节 ---------- */

.page-about .about-section {
  position: relative;
  padding-block: var(--about-pad);
}

.page-about .about-section--turf {
  background: linear-gradient(180deg, var(--night-base), var(--turf-deep) 48%, var(--night-base));
}

.page-about .about-head {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(30px, 4.6vw, 58px);
}

.page-about .about-head__idx {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(40px, 7vw, 86px);
  line-height: .78;
  letter-spacing: -.03em;
  color: rgba(244, 247, 251, .07);
}

.page-about .about-head h2 {
  margin: 0;
  max-width: 22ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 4.2vw, 44px);
  line-height: 1.12;
  letter-spacing: -.015em;
}

.page-about .about-head__sub {
  margin: 0;
  max-width: 62ch;
  font-size: clamp(14.5px, 1.6vw, 17px);
  line-height: 1.78;
  color: var(--text-muted);
}

.page-about .about-body {
  display: grid;
  gap: clamp(14px, 2vw, 20px);
  max-width: 62ch;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.8;
}

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

.page-about .about-body strong {
  font-weight: 600;
  color: var(--lime-signal);
}

.page-about .about-body a {
  color: var(--sky-cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-about .about-body a:hover {
  color: var(--lime-signal);
}

.page-about .about-body--lead {
  margin-bottom: clamp(34px, 5vw, 62px);
  max-width: 68ch;
}

/* ---------- 图文对位 ---------- */

.page-about .about-split {
  display: grid;
  gap: clamp(26px, 4.5vw, 52px);
  align-items: start;
}

.page-about .about-figure {
  margin: 0;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--about-rule);
  border-radius: var(--radius-lg);
  background: var(--panel-ink);
}

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

.page-about .about-figure--wide {
  margin-top: clamp(34px, 5vw, 62px);
}

.page-about .about-figure--wide img {
  aspect-ratio: 2 / 1;
}

.page-about .about-figure figcaption {
  padding: 12px clamp(14px, 2vw, 20px);
  border-top: 1px solid var(--about-rule);
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--text-muted);
}

/* ---------- 三个小组 ---------- */

.page-about .about-crews {
  margin-top: clamp(42px, 6vw, 84px);
  display: grid;
  gap: 1px;
  background: var(--about-rule);
  border-block: 1px solid var(--about-rule);
}

.page-about .crew {
  background: var(--night-base);
  padding: clamp(20px, 2.8vw, 34px) clamp(16px, 2.4vw, 28px);
  display: grid;
  gap: 10px;
  align-content: start;
  transition: background .35s var(--ease);
}

.page-about .crew:hover {
  background: var(--panel-ink);
}

.page-about .crew__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--lime-signal);
}

.page-about .crew h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(19px, 2.4vw, 24px);
  letter-spacing: -.01em;
}

.page-about .crew p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--text-muted);
}

/* ---------- 数据流程 ---------- */

.page-about .about-flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(24px, 3vw, 30px);
}

.page-about .flow-step {
  position: relative;
}

.page-about .flow-step__no {
  display: inline-block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--sky-cyan);
}

.page-about .flow-step h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(19px, 2.2vw, 22px);
}

.page-about .flow-step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--text-muted);
}

.page-about .flow-step::after {
  content: "";
  display: block;
  width: 36px;
  height: 2px;
  margin-top: 18px;
  background: linear-gradient(90deg, var(--lime-signal), transparent);
}

/* ---------- 赛季轨道 ---------- */

.page-about .about-season__stage {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  margin-top: clamp(18px, 3vw, 34px);
  padding-block: clamp(6px, 1.6vw, 16px);
}

.page-about .about-season__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .26;
  filter: saturate(.7);
}

.page-about .about-season__stage::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(90deg, rgba(7, 11, 20, .9), rgba(7, 11, 20, .5) 48%, rgba(7, 11, 20, .92));
}

.page-about .about-season__inner {
  position: relative;
}

.page-about .about-rail {
  list-style: none;
  margin: 0;
  padding: clamp(30px, 5vw, 56px) 0;
  display: flex;
  gap: 0;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-about .rail-node {
  position: relative;
  flex: 0 0 clamp(224px, 74vw, 300px);
  scroll-snap-align: start;
  padding: 26px clamp(16px, 2.4vw, 26px) 0;
  border-top: 1px solid var(--line-strong);
}

.page-about .rail-node::before {
  content: "";
  position: absolute;
  top: -4.5px;
  left: 0;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--lime-signal);
  box-shadow: 0 0 0 5px var(--glow-lime);
}

.page-about .rail-node__phase {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--sky-cyan);
}

.page-about .rail-node h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(18px, 2.2vw, 22px);
  letter-spacing: -.01em;
}

.page-about .rail-node p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--text-muted);
}

/* ---------- 排班时间线 ---------- */

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

.page-about .shift-row {
  background: var(--night-base);
  display: grid;
  gap: 8px;
  padding: clamp(18px, 2.6vw, 26px) clamp(14px, 2vw, 22px);
  transition: background .35s var(--ease);
}

.page-about .shift-row:hover {
  background: var(--panel-ink);
}

.page-about .shift-row__stage {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--lime-signal);
}

.page-about .shift-row__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.76;
  color: var(--text-primary);
}

.page-about .shift-row__owner {
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--text-muted);
}

/* ---------- 服务与响应 ---------- */

.page-about .about-service {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
  align-items: start;
}

.page-about .service-stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--about-rule);
  border-block: 1px solid var(--about-rule);
}

.page-about .service-stat {
  background: var(--turf-deep);
  padding: clamp(14px, 2vw, 20px) clamp(12px, 2vw, 18px);
  display: grid;
  gap: 6px;
  align-content: start;
}

.page-about .service-stat__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1;
  color: var(--amber-warn);
}

.page-about .service-stat__label {
  font-size: 12.5px;
  letter-spacing: .07em;
  color: var(--text-muted);
}

/* ---------- 出口链接 ---------- */

.page-about .about-next {
  padding-block: clamp(52px, 8vw, 104px);
  border-top: 1px solid var(--about-rule);
}

.page-about .about-next__title {
  margin: 0 0 clamp(22px, 3vw, 34px);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(21px, 3vw, 30px);
  letter-spacing: -.01em;
}

.page-about .about-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--about-rule);
}

.page-about .about-links a {
  display: grid;
  gap: 6px;
  padding: clamp(16px, 2.2vw, 22px) clamp(14px, 2vw, 20px);
  background: var(--night-base);
  text-decoration: none;
  transition: background .3s var(--ease);
}

.page-about .about-links a:hover {
  background: var(--panel-ink);
}

.page-about .about-links__k {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: .02em;
  color: var(--text-primary);
}

.page-about .about-links a:hover .about-links__k {
  color: var(--lime-signal);
}

.page-about .about-links__v {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--text-muted);
}

/* ---------- 回到顶部 ---------- */

.page-about .about-top {
  position: fixed;
  right: clamp(14px, 3vw, 28px);
  bottom: clamp(14px, 3vw, 28px);
  z-index: 40;
  padding: 10px 15px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(19, 32, 51, .88);
  color: var(--text-muted);
  font-size: 12.5px;
  letter-spacing: .08em;
  text-decoration: none;
  transition: color .3s var(--ease), border-color .3s var(--ease);
}

.page-about .about-top:hover {
  color: var(--lime-signal);
  border-color: var(--lime-signal);
}

/* ---------- 滚动进入 ---------- */

.page-about [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .6s var(--ease), transform .6s var(--ease);
}

.page-about [data-reveal].is-in {
  opacity: 1;
  transform: none;
}

/* ---------- 响应式 ---------- */

@media (min-width: 760px) {
  .page-about .about-meta {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-service {
    grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
    column-gap: clamp(30px, 4.5vw, 64px);
  }

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

@media (min-width: 880px) {
  .page-about .about-head {
    grid-template-columns: clamp(96px, 10vw, 150px) minmax(0, 1fr);
    column-gap: clamp(18px, 3vw, 40px);
    align-items: start;
  }

  .page-about .about-head__idx {
    grid-column: 1;
    grid-row: 1 / span 2;
  }

  .page-about .about-head h2 {
    grid-column: 2;
    grid-row: 1;
  }

  .page-about .about-head__sub {
    grid-column: 2;
    grid-row: 2;
  }

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

  .page-about .crew:nth-child(2) {
    padding-top: clamp(46px, 6vw, 76px);
  }

  .page-about .crew:nth-child(3) {
    padding-top: clamp(28px, 3.6vw, 48px);
  }

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

  .page-about .flow-step {
    padding: 0 clamp(18px, 2.8vw, 34px);
    border-left: 1px solid var(--about-rule);
  }

  .page-about .flow-step:first-child {
    padding-left: 0;
    border-left: 0;
  }

  .page-about .flow-step:last-child {
    padding-right: 0;
  }

  .page-about .about-rail {
    overflow: visible;
    padding-block: clamp(36px, 5vw, 64px);
  }

  .page-about .rail-node {
    flex: 1 1 0;
  }
}

@media (min-width: 940px) {
  .page-about .about-split {
    grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
    column-gap: clamp(36px, 5.5vw, 84px);
  }

  .page-about .about-split__media {
    margin-top: clamp(0px, 3vw, 44px);
  }
}

@media (min-width: 820px) {
  .page-about .shift-row {
    grid-template-columns: clamp(120px, 16vw, 190px) minmax(0, 1fr) clamp(140px, 20vw, 240px);
    column-gap: clamp(16px, 3vw, 40px);
    align-items: baseline;
  }
}

@media (min-width: 1040px) {
  .page-about .about-links {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}