.page-about {
  --about-line: rgba(24, 27, 34, .16);
  --about-line-soft: rgba(24, 27, 34, .08);
  --about-muted: rgba(24, 27, 34, .64);
  background: var(--paper);
  color: var(--charcoal);
  padding-bottom: clamp(40px, 7vw, 88px);
  overflow-x: hidden;
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumbs {
  padding-top: clamp(16px, 2.5vw, 28px);
}
.page-about .about-crumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--about-muted);
}
.page-about .about-crumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--about-line);
}
.page-about .about-crumbs a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.page-about .about-crumbs a:hover,
.page-about .about-crumbs a:focus-visible {
  color: var(--charcoal);
  border-bottom-color: var(--orange);
}

/* ---------- 通用小标 ---------- */
.page-about .about-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--about-muted);
}
.page-about .about-kicker__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--orange);
}
.page-about .about-kicker--dark {
  color: var(--haze);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-block: clamp(20px, 4vw, 44px) clamp(28px, 5vw, 56px);
}
.page-about .about-hero__title {
  margin: 0 0 clamp(18px, 2.4vw, 26px);
  max-width: 15em;
  font-family: var(--font-sans);
  font-weight: 200;
  font-size: clamp(34px, 6vw, 76px);
  line-height: 1.04;
  letter-spacing: -.04em;
}
.page-about .about-hero__lede {
  margin: 0 0 clamp(28px, 4vw, 44px);
  max-width: 40em;
  font-size: clamp(15px, 1.3vw, 17px);
  line-height: 1.8;
  color: var(--about-muted);
}
.page-about .about-hero__years {
  display: flex;
  align-items: baseline;
  gap: clamp(10px, 3vw, 40px);
  padding-top: clamp(18px, 3vw, 30px);
  border-top: 1px solid var(--about-line);
}
.page-about .about-year {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: clamp(38px, 10vw, 120px);
  line-height: .82;
  letter-spacing: -.05em;
  color: var(--charcoal);
  flex: none;
}
.page-about .about-year--end {
  color: var(--orange);
}
.page-about .about-hero__bridge {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.page-about .about-hero__bridge-line {
  display: block;
  height: 1px;
  background-image: repeating-linear-gradient(90deg, var(--about-line) 0 6px, transparent 6px 12px);
}
.page-about .about-hero__bridge-label {
  font-family: var(--font-mono);
  font-size: clamp(10px, 2.2vw, 11px);
  letter-spacing: .12em;
  color: var(--about-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ---------- 章节抬头 ---------- */
.page-about .about-section-head {
  margin-bottom: clamp(22px, 3.5vw, 38px);
}
.page-about .about-section-head h2 {
  margin: 0 0 16px;
  max-width: 17em;
  font-weight: 200;
  font-size: clamp(27px, 4.2vw, 54px);
  line-height: 1.08;
  letter-spacing: -.03em;
}
.page-about .about-section-head__lede {
  margin: 0;
  max-width: 42em;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--about-muted);
}
.page-about .about-section-head--dark h2 {
  color: var(--paper);
}
.page-about .about-section-head--dark .about-section-head__lede {
  color: var(--haze);
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  padding-block: clamp(34px, 5vw, 68px);
  border-top: 1px solid var(--about-line);
}
.page-about .about-timeline__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.5vw, 44px);
  align-items: start;
}

.page-about .about-rail__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--about-muted);
}
.page-about .about-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}
.page-about .about-rail__list::-webkit-scrollbar {
  display: none;
}
.page-about .about-rail__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  white-space: nowrap;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--charcoal);
  text-decoration: none;
  border: 1px solid var(--about-line);
  border-radius: var(--r-pill);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.page-about .about-rail__link:hover,
.page-about .about-rail__link:focus-visible {
  border-color: var(--orange);
  color: var(--orange);
}

.page-about .about-figure {
  margin: 0 0 clamp(26px, 4vw, 40px);
  border-radius: var(--r-card);
  border: 1px solid var(--about-line);
  overflow: hidden;
  background: var(--ink-800);
}
.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}
.page-about .about-figure__cap {
  padding: 12px clamp(14px, 2vw, 20px);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--haze);
  background: var(--ink-900);
}

.page-about .about-miles {
  display: grid;
  gap: clamp(18px, 2.6vw, 28px);
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-about .about-mile {
  position: relative;
  padding: clamp(22px, 3vw, 32px);
  background: var(--paper-soft);
  border: 1px solid var(--about-line);
  border-radius: var(--r-card);
  scroll-margin-top: 120px;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease), background var(--dur) var(--ease);
}
.page-about .about-mile::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 26px;
  width: 84px;
  height: 6px;
  border-radius: 0 0 6px 6px;
  background: var(--gold);
  transition: background var(--dur) var(--ease), height var(--dur) var(--ease);
}
.page-about .about-mile:hover,
.page-about .about-mile:focus,
.page-about .about-mile:focus-within {
  border-color: rgba(24, 27, 34, .32);
  background: #FFFDF6;
}
.page-about .about-mile:hover::before,
.page-about .about-mile:focus::before {
  background: var(--orange);
  height: 9px;
}
.page-about .about-mile:target {
  border-color: var(--orange);
  box-shadow: 0 0 0 2px rgba(255, 106, 42, .2);
}
.page-about .about-mile:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}
.page-about .about-mile__top {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}
.page-about .about-mile__year {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1;
  letter-spacing: -.03em;
}
.page-about .about-mile__tag {
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--about-muted);
  border: 1px solid var(--about-line);
  border-radius: var(--r-pill);
}
.page-about .about-mile__title {
  margin: 0 0 10px;
  font-size: clamp(17px, 2.1vw, 23px);
  font-weight: 500;
  line-height: 1.45;
  letter-spacing: -.01em;
}
.page-about .about-mile__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--about-muted);
}
.page-about .about-mile__more {
  max-height: 0;
  overflow: hidden;
  transition: max-height 220ms var(--ease), margin-top 220ms var(--ease);
}
.page-about .about-mile__more p {
  margin: 0;
  padding-top: 12px;
  border-top: 1px dashed var(--about-line);
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--about-muted);
}
.page-about .about-mile:hover .about-mile__more,
.page-about .about-mile:focus .about-mile__more,
.page-about .about-mile:focus-within .about-mile__more {
  max-height: 280px;
  margin-top: 14px;
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  padding-block: clamp(40px, 6vw, 80px);
  background: var(--ink-800);
  color: var(--paper);
}
.page-about .about-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.5vw, 40px);
  align-items: start;
}
.page-about .about-team__fig {
  margin: 0;
  border-radius: var(--r-card);
  overflow: hidden;
  border: 1px solid var(--line-dark);
  background: var(--ink-900);
}
.page-about .about-team__fig img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}
.page-about .about-team__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(18px, 2.4vw, 26px);
}
.page-about .about-stat {
  padding-left: 14px;
  border-left: 2px solid var(--cyan);
}
.page-about .about-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--paper);
}
.page-about .about-stat__num--cyan {
  color: var(--cyan);
}
.page-about .about-stat__num--orange {
  color: var(--orange);
}
.page-about .about-stat__label {
  display: block;
  margin-top: 9px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--haze);
}

.page-about .about-shifts {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: clamp(28px, 4vw, 48px) 0 0;
  padding: 0;
  list-style: none;
  background: var(--line-dark-soft);
  border: 1px solid var(--line-dark);
  border-radius: var(--r-md);
  overflow: hidden;
}
.page-about .about-shift {
  padding: clamp(18px, 2.4vw, 24px);
  background: var(--ink-800);
  transition: background var(--dur) var(--ease);
}
.page-about .about-shift:hover {
  background: var(--ink-700);
}
.page-about .about-shift__key {
  display: inline-block;
  margin-bottom: 10px;
  padding: 3px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--ink-900);
  background: var(--acid);
  border-radius: var(--r-pill);
}
.page-about .about-shift p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--haze);
}

/* ---------- 服务网络 ---------- */
.page-about .about-network {
  padding-block: clamp(38px, 5.5vw, 76px);
}
.page-about .about-network__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.5vw, 40px);
  align-items: center;
}
.page-about .about-network__fig {
  margin: 0;
  border-radius: var(--r-card);
  overflow: hidden;
  border: 1px solid var(--about-line);
  background: var(--ink-800);
}
.page-about .about-network__fig img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}
.page-about .about-network__facts {
  display: grid;
  gap: clamp(16px, 2.2vw, 24px);
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-about .about-fact {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--about-line-soft);
}
.page-about .about-fact__num {
  flex: none;
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: clamp(30px, 4vw, 42px);
  line-height: 1;
  letter-spacing: -.04em;
  color: var(--orange);
}
.page-about .about-fact__label {
  font-size: 14px;
  line-height: 1.7;
  color: var(--about-muted);
}
.page-about .about-network__cities {
  margin: clamp(24px, 3vw, 36px) 0 0;
  padding-top: 16px;
  border-top: 1px dashed var(--about-line);
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.9;
  letter-spacing: .1em;
  color: var(--about-muted);
}

/* ---------- 会员体系 ---------- */
.page-about .about-plans {
  padding-block: clamp(38px, 5.5vw, 76px);
  border-top: 1px solid var(--about-line);
}
.page-about .about-plans__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(14px, 2vw, 20px);
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-about .about-plan {
  padding: clamp(20px, 2.8vw, 28px);
  background: var(--paper-soft);
  border: 1px solid var(--about-line);
  border-radius: var(--r-card);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.page-about .about-plan:hover {
  border-color: var(--cyan);
  background: #FFFDF6;
}
.page-about .about-plan__top {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}
.page-about .about-plan__tier {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--about-muted);
  border: 1px solid var(--about-line);
  border-radius: var(--r-pill);
  padding: 4px 10px;
}
.page-about .about-plan__num {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: clamp(34px, 5vw, 52px);
  line-height: 1;
  letter-spacing: -.04em;
  color: var(--charcoal);
}
.page-about .about-plan__unit {
  font-size: 13px;
  color: var(--about-muted);
}
.page-about .about-plan__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--about-muted);
}
.page-about .about-plans__link {
  margin: clamp(22px, 3vw, 32px) 0 0;
}
.page-about .about-cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 26px;
  font-size: 14.5px;
  font-weight: 500;
  text-decoration: none;
  color: var(--paper);
  background: var(--orange);
  border: 1px solid var(--orange);
  border-radius: var(--r-pill);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.page-about .about-cta::after {
  content: "→";
  font-family: var(--font-mono);
}
.page-about .about-cta:hover,
.page-about .about-cta:focus-visible {
  background: var(--ink-800);
  border-color: var(--ink-800);
  color: var(--paper);
}

/* ---------- 荣誉与当前赛季 ---------- */
.page-about .about-honor {
  padding-block: clamp(40px, 6vw, 78px);
  background: var(--ink-900);
  color: var(--paper);
}
.page-about .about-honor__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.5vw, 40px);
  align-items: start;
}
.page-about .about-honor__award {
  padding: clamp(22px, 3vw, 30px);
  border: 1px solid rgba(217, 201, 166, .34);
  border-radius: var(--r-card);
  background: linear-gradient(160deg, rgba(217, 201, 166, .12), rgba(217, 201, 166, 0) 68%);
}
.page-about .about-honor__year {
  display: block;
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: clamp(34px, 5vw, 56px);
  line-height: 1;
  letter-spacing: -.04em;
  color: var(--gold);
  margin-bottom: 16px;
}
.page-about .about-honor__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--paper);
}
.page-about .about-honor__list {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--line-dark-soft);
  border: 1px solid var(--line-dark);
  border-radius: var(--r-md);
  overflow: hidden;
}
.page-about .about-honor__item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: clamp(16px, 2.2vw, 22px);
  background: var(--ink-900);
  transition: background var(--dur) var(--ease);
}
.page-about .about-honor__item:hover {
  background: var(--ink-800);
}
.page-about .about-honor__index {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--cyan);
  padding-top: 2px;
}
.page-about .about-honor__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--haze);
}

/* ---------- 底部入口 ---------- */
.page-about .about-links {
  padding-block: clamp(36px, 5vw, 68px);
}
.page-about .about-links__title {
  margin: 0 0 clamp(20px, 3vw, 32px);
  font-weight: 200;
  font-size: clamp(22px, 3.2vw, 36px);
  line-height: 1.2;
  letter-spacing: -.02em;
}
.page-about .about-links__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--about-line-soft);
  border: 1px solid var(--about-line);
  border-radius: var(--r-md);
  overflow: hidden;
}
.page-about .about-links__item {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: clamp(16px, 2.2vw, 22px);
  text-decoration: none;
  color: var(--charcoal);
  background: var(--paper);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}
.page-about .about-links__item:hover,
.page-about .about-links__item:focus-visible {
  background: var(--ink-800);
  color: var(--paper);
}
.page-about .about-links__index {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--orange);
}
.page-about .about-links__text {
  font-size: 15px;
  line-height: 1.6;
}
.page-about .about-links__top {
  margin: clamp(20px, 3vw, 30px) 0 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .12em;
}
.page-about .about-links__top a {
  color: var(--about-muted);
  text-decoration: none;
  border-bottom: 1px solid var(--about-line);
  padding-bottom: 3px;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.page-about .about-links__top a:hover,
.page-about .about-links__top a:focus-visible {
  color: var(--charcoal);
  border-bottom-color: var(--orange);
}

/* ---------- 焦点可见性 ---------- */
.page-about a:focus-visible,
.page-about [tabindex="0"]:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .about-team__stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .about-shifts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .about-plans__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .about-links__row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 880px) {
  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: clamp(28px, 4vw, 52px);
  }
  .page-about .about-network__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    gap: clamp(28px, 4vw, 52px);
  }
  .page-about .about-honor__grid {
    grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
    gap: clamp(28px, 4vw, 52px);
  }
}

@media (min-width: 960px) {
  .page-about .about-timeline__inner {
    grid-template-columns: 172px minmax(0, 1fr);
    gap: clamp(36px, 4.5vw, 64px);
  }
  .page-about .about-rail {
    position: sticky;
    top: 96px;
    align-self: start;
  }
  .page-about .about-rail__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
    border-left: 1px solid var(--about-line);
  }
  .page-about .about-rail__link {
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    margin-left: -1px;
    padding: 9px 0 9px 16px;
    font-family: var(--font-mono);
    color: var(--about-muted);
  }
  .page-about .about-rail__link:hover,
  .page-about .about-rail__link:focus-visible {
    background: none;
    color: var(--charcoal);
    border-left-color: var(--orange);
  }
  .page-about .about-links__row {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-mile__more,
  .page-about .about-mile::before,
  .page-about .about-mile,
  .page-about .about-plan,
  .page-about .about-cta,
  .page-about .about-links__item {
    transition: none;
  }
}