.page-about {
  --about-max: 1180px;
  --about-muted: #5C6675;
  --about-gap: clamp(28px, 4vw, 52px);
  background: var(--paper);
  color: var(--black);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: var(--paper);
  padding: 20px 0 clamp(48px, 7vw, 92px);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  top: -32%;
  right: -14%;
  width: min(560px, 72vw);
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.14;
  pointer-events: none;
}

.page-about .about-hero .content-wrap {
  position: relative;
  z-index: 1;
}

.page-about .about-hero .breadcrumb,
.page-about .about-hero .breadcrumb a,
.page-about .about-hero .breadcrumb li {
  color: rgba(244, 239, 228, 0.66);
}

.page-about .about-hero .breadcrumb a:hover {
  color: var(--paper);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 5vw, 56px);
  margin-top: clamp(26px, 4vw, 44px);
}

@media (min-width: 960px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(268px, 0.85fr);
    align-items: end;
  }
}

.page-about .about-hero__eyebrow {
  color: var(--accent);
}

.page-about .about-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 6.2vw, 68px);
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-about .about-hero__text {
  margin: 22px 0 0;
  max-width: 42ch;
  font-size: 17px;
  line-height: 1.85;
  color: rgba(244, 239, 228, 0.82);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  background: var(--rule-dark-soft);
  border: 1px solid var(--rule-dark-soft);
}

.page-about .about-fact {
  background: var(--ink-2);
  padding: 16px 14px 18px;
}

.page-about .about-fact dt {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: rgba(244, 239, 228, 0.58);
}

.page-about .about-fact dd {
  margin: 8px 0 0;
  display: flex;
  align-items: baseline;
  gap: 5px;
}

.page-about .about-fact__num {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(26px, 3.2vw, 38px);
  line-height: 1;
  color: var(--paper);
}

.page-about .about-fact__unit {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: rgba(244, 239, 228, 0.6);
}

/* ---------- 通用区块 ---------- */
.page-about .section {
  padding-block: clamp(48px, 7vw, 90px);
}

.page-about h2 {
  margin: 12px 0 0;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(24px, 3.3vw, 38px);
  line-height: 1.28;
  letter-spacing: 0.01em;
  color: var(--black);
}

.page-about .about-section__lead {
  margin: 16px 0 0;
  max-width: 52ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--about-muted);
}

.page-about .img-frame img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

.page-about figure {
  margin: 0;
}

/* ---------- 我们在做的事 ---------- */
.page-about .about-wedo__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--about-gap);
  margin-top: clamp(26px, 4vw, 40px);
}

@media (min-width: 900px) {
  .page-about .about-wedo__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: start;
  }
}

.page-about .about-p {
  position: relative;
  margin: 0 0 24px;
  padding-left: 46px;
  font-size: 17px;
  line-height: 1.88;
  color: var(--black);
}

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

.page-about .about-p::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 5px;
  bottom: 5px;
  width: 2px;
  background: var(--rule-soft);
  transition: background var(--dur) var(--ease);
}

.page-about .about-p:hover::before {
  background: var(--accent);
}

.page-about .about-p__num {
  position: absolute;
  left: 0;
  top: 5px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--accent-ink);
}

.page-about .about-wedo__figure figcaption,
.page-about .about-team__figure figcaption {
  margin-top: 12px;
  padding-left: 12px;
  border-left: 3px solid var(--accent);
  font-size: 13px;
  line-height: 1.7;
  color: var(--about-muted);
}

/* ---------- 版本时间线 ---------- */
.page-about .about-timeline {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: var(--paper);
  padding: clamp(48px, 7vw, 88px) 0 clamp(36px, 5vw, 64px);
}

.page-about .about-timeline__bg {
  position: absolute;
  inset: 0;
  opacity: 0.18;
  pointer-events: none;
}

.page-about .about-timeline__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .about-timeline__head {
  position: relative;
  z-index: 1;
}

.page-about .about-timeline .eyebrow {
  color: var(--accent);
}

.page-about .about-timeline h2 {
  color: var(--paper);
}

.page-about .about-timeline__lead {
  margin: 16px 0 0;
  max-width: 54ch;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(244, 239, 228, 0.76);
}

.page-about .about-timeline__hint {
  margin: 16px 0 0;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: rgba(244, 239, 228, 0.5);
}

.page-about .timeline-track {
  position: relative;
  z-index: 1;
  display: flex;
  gap: 16px;
  margin: clamp(26px, 4vw, 42px) 0 0;
  padding: 6px var(--gutter) 18px;
  list-style: none;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.page-about .timeline-node {
  flex: 0 0 auto;
  width: min(296px, 76vw);
  scroll-snap-align: start;
  padding: 20px 20px 24px;
  background: var(--ink-2);
  border: 1px solid var(--rule-dark-soft);
  border-top: 4px solid var(--node-color, var(--accent));
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-about .timeline-node:hover {
  transform: translateY(-4px);
  background: var(--ink-3);
}

.page-about .timeline-node--spring { --node-color: var(--spring); }
.page-about .timeline-node--summer { --node-color: var(--summer); }
.page-about .timeline-node--autumn { --node-color: var(--autumn); }
.page-about .timeline-node--winter { --node-color: var(--winter); }

.page-about .timeline-node__meta {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.page-about .timeline-node__year {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 600;
  line-height: 1;
  color: var(--node-color, var(--accent));
}

.page-about .timeline-node__ver {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: rgba(244, 239, 228, 0.55);
}

.page-about .timeline-node h3 {
  margin: 14px 0 0;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 20px;
  line-height: 1.4;
  color: var(--paper);
}

.page-about .timeline-node p {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(244, 239, 228, 0.74);
}

.page-about .timeline-node__list {
  display: grid;
  gap: 8px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .timeline-node__list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.65;
  color: rgba(244, 239, 228, 0.64);
}

.page-about .timeline-node__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  background: var(--node-color, var(--accent));
}

/* ---------- 团队 ---------- */
.page-about .about-team__figure {
  margin: 0 0 var(--about-gap);
}

.page-about .about-team__figure .img-frame {
  max-width: 880px;
}

.page-about .role-map {
  display: grid;
  gap: 16px;
  margin-top: clamp(26px, 4vw, 38px);
}

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

@media (min-width: 720px) {
  .page-about .role-map__row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-about .role-map__link {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--about-muted);
}

.page-about .role-map__link::before,
.page-about .role-map__link::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--rule);
}

.page-about .role-card {
  position: relative;
  padding: 22px 20px 24px 24px;
  background: var(--paper-2);
  border: 1px solid var(--rule);
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .role-card::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--role-color, var(--accent));
}

.page-about .role-card:hover {
  background: #fff;
  border-color: var(--role-color, var(--accent));
}

.page-about .role-card--edit { --role-color: var(--spring); }
.page-about .role-card--data { --role-color: var(--winter); }
.page-about .role-card--tech { --role-color: var(--summer); }
.page-about .role-card--service { --role-color: var(--autumn); }

.page-about .role-card__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 600;
  line-height: 1;
  color: var(--ink);
}

.page-about .role-card__num span {
  margin-left: 4px;
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--about-muted);
}

.page-about .role-card h3 {
  margin: 14px 0 0;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 19px;
  line-height: 1.4;
  color: var(--ink);
}

.page-about .role-card p {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--black);
}

/* ---------- 覆盖范围 ---------- */
.page-about .table-scroll {
  margin-top: clamp(24px, 3.5vw, 36px);
  overflow-x: auto;
}

.page-about .about-table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  font-size: 15px;
}

.page-about .about-table thead th {
  padding: 14px;
  text-align: left;
  background: var(--ink);
  color: var(--paper);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.page-about .about-table th,
.page-about .about-table td {
  padding: 16px 14px;
  text-align: left;
  vertical-align: top;
  line-height: 1.75;
  border-bottom: 1px solid var(--rule);
}

.page-about .about-table tbody th {
  font-weight: 700;
  color: var(--ink);
  white-space: nowrap;
}

.page-about .about-table tbody td {
  color: var(--about-muted);
}

.page-about .about-table tbody tr:nth-child(even) {
  background: rgba(13, 26, 47, 0.035);
}

.page-about .about-table tbody tr:hover {
  background: rgba(13, 26, 47, 0.075);
}

.page-about .sport-dot {
  display: inline-block;
  width: 9px;
  height: 9px;
  margin-right: 9px;
  vertical-align: 1px;
  background: var(--dot, var(--accent));
}

.page-about .sport-dot--football { --dot: var(--spring); }
.page-about .sport-dot--basketball { --dot: var(--summer); }
.page-about .sport-dot--volleyball { --dot: var(--autumn); }
.page-about .sport-dot--road { --dot: var(--winter); }

/* ---------- 产出节奏 ---------- */
.page-about .about-rhythm {
  background: var(--paper-2);
}

.page-about .rhythm-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: clamp(26px, 4vw, 38px);
}

@media (min-width: 760px) {
  .page-about .rhythm-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-about .rhythm-col {
  padding: 24px 20px;
  background: #fff;
  border: 1px solid var(--rule);
}

.page-about .rhythm-col--match { border-top: 4px solid var(--summer); }
.page-about .rhythm-col--off { border-top: 4px solid var(--winter); }

.page-about .rhythm-col h3 {
  margin: 0 0 16px;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 20px;
  color: var(--ink);
}

.page-about .rhythm-col ul {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .rhythm-col li {
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--rule-soft);
  font-size: 15px;
  line-height: 1.75;
  color: var(--black);
}

.page-about .rhythm-col li:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

.page-about .rhythm-time {
  display: block;
  margin-bottom: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--accent-ink);
}

.page-about .rhythm-week {
  margin-top: 22px;
  padding: 22px 20px 18px;
  background: #fff;
  border: 1px solid var(--rule);
}

.page-about .rhythm-week__cap {
  margin: 0 0 20px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--ink);
}

.page-about .rhythm-week__list {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 8px;
  align-items: end;
  height: 148px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .rhythm-week__item {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  align-items: center;
  gap: 8px;
  height: 100%;
}

.page-about .rhythm-week__bar {
  width: 100%;
  max-width: 46px;
  height: 40%;
  background: var(--ink-3);
  transition: background var(--dur) var(--ease);
}

.page-about .rhythm-week__item:hover .rhythm-week__bar {
  background: var(--accent);
}

.page-about .rhythm-week__item:nth-child(1) .rhythm-week__bar { height: 36%; }
.page-about .rhythm-week__item:nth-child(2) .rhythm-week__bar { height: 44%; }
.page-about .rhythm-week__item:nth-child(3) .rhythm-week__bar { height: 62%; }
.page-about .rhythm-week__item:nth-child(4) .rhythm-week__bar { height: 54%; }
.page-about .rhythm-week__item:nth-child(5) .rhythm-week__bar { height: 76%; }
.page-about .rhythm-week__item:nth-child(6) .rhythm-week__bar { height: 96%; }
.page-about .rhythm-week__item:nth-child(7) .rhythm-week__bar { height: 82%; }

.page-about .rhythm-week__day {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--about-muted);
}

/* ---------- 合作与认可 ---------- */
.page-about .about-partners__grid {
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: clamp(26px, 4vw, 38px);
}

@media (min-width: 760px) {
  .page-about .about-partners__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .about-partner {
  padding: 24px 20px;
  background: #fff;
  border: 1px solid var(--rule);
  transition: border-color var(--dur) var(--ease);
}

.page-about .about-partner:hover {
  border-color: var(--accent);
}

.page-about .about-partner__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(30px, 4vw, 42px);
  font-weight: 600;
  line-height: 1;
  color: var(--accent-ink);
}

.page-about .about-partner h3 {
  margin: 14px 0 0;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 18px;
  line-height: 1.45;
  color: var(--ink);
}

.page-about .about-partner p {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--about-muted);
}

.page-about .about-honors {
  margin-top: 24px;
  padding: 24px 22px 26px;
  background: var(--ink);
  border-top: 3px solid var(--signal);
  color: var(--paper);
}

.page-about .about-honors h3 {
  margin: 0 0 16px;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 19px;
  color: var(--paper);
}

.page-about .about-honors ul {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-honors li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(244, 239, 228, 0.84);
}

.page-about .about-honors li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  background: var(--signal);
}

.page-about .about-honors span {
  margin-right: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--signal);
}

/* ---------- 结尾 ---------- */
.page-about .about-cta {
  padding: clamp(42px, 6vw, 76px) 0;
  background: var(--ink-2);
  border-top: 4px solid var(--accent);
  color: var(--paper);
}

.page-about .about-cta__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}

@media (min-width: 880px) {
  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

.page-about .about-cta h2 {
  margin: 0;
  color: var(--paper);
}

.page-about .about-cta p {
  margin: 14px 0 0;
  max-width: 48ch;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(244, 239, 228, 0.78);
}

.page-about .about-cta__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-p::before,
  .page-about .timeline-node,
  .page-about .role-card,
  .page-about .about-partner,
  .page-about .rhythm-week__bar {
    transition: none;
  }
  .page-about .timeline-node:hover {
    transform: none;
  }
}