.page-about,
.page-about *,
.page-about *::before,
.page-about *::after {
  box-sizing: border-box;
}

.page-about {
  --ab-cyan-ink: #0E7361;
  --ab-line-dark: rgba(10, 26, 20, 0.18);
  background: var(--ink);
  color: var(--line-white);
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.75;
  overflow-wrap: break-word;
}

.page-about .ab-wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
}

.page-about .note {
  font-family: var(--font-mono);
  font-style: italic;
  font-size: 12px;
  color: var(--moss);
  margin: 12px 0 0;
}

/* ---------- 面包屑 ---------- */
.page-about .ab-crumbs {
  padding-top: 26px;
}

.page-about .crumbs {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--moss);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.page-about .crumbs__link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--ease), color var(--ease);
}

.page-about .crumbs__link:hover,
.page-about .crumbs__link:focus-visible {
  border-bottom-color: var(--cyan);
}

.page-about .crumbs__sep {
  color: var(--moss-dark);
}

.page-about .crumbs__current {
  color: var(--line-white);
}

/* ---------- 首屏 ---------- */
.page-about .ab-hero {
  padding: 30px 0 54px;
  border-bottom: 2px solid var(--turf);
}

.page-about .ab-hero__grid {
  display: grid;
  gap: 34px;
}

.page-about .ab-hero__title {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(2.35rem, 9vw, 4.6rem);
  line-height: 0.98;
  letter-spacing: -0.02em;
  margin: 12px 0 20px;
  color: var(--line-white);
}

.page-about .ab-hero__accent {
  display: block;
  color: var(--cyan);
  text-shadow: var(--glow);
}

.page-about .ab-hero__lead {
  margin: 0;
  max-width: 58ch;
  color: var(--moss);
  font-size: 15px;
}

.page-about .ab-hero__facts {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 2px;
  background: var(--turf);
  border: 2px solid var(--turf);
}

.page-about .ab-fact {
  background: var(--ink);
  padding: 14px 12px 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.page-about .ab-fact__v {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.5rem, 6.5vw, 2.3rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--amber);
  text-shadow: var(--glow-amber);
  font-variant-numeric: tabular-nums;
}

.page-about .ab-fact__k {
  font-size: 11px;
  font-style: italic;
  line-height: 1.45;
  color: var(--moss);
}

.page-about .ab-hero__media {
  margin: 0;
}

.page-about .media {
  border: 3px solid var(--cyan-deep);
  box-shadow: 8px 8px 0 var(--ink-deep);
  background: var(--ink-deep);
}

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

.page-about .media--tall img {
  aspect-ratio: 16 / 9;
}

.page-about .media--wide img {
  aspect-ratio: 3 / 2;
}

.page-about .media--square img {
  aspect-ratio: 1 / 1;
}

.page-about .media__cap {
  display: block;
  padding: 10px 12px;
  font-size: 11.5px;
  font-style: italic;
  color: var(--moss);
  background: var(--ink-deep);
  border-top: 2px solid var(--turf);
  line-height: 1.5;
}

/* ---------- 章节骨架 ---------- */
.page-about .ab-sec {
  padding: 56px 0;
}

.page-about .ab-sec__head {
  margin-bottom: 30px;
}

.page-about .eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-style: italic;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-about .ab-sec__title {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.65rem, 5.6vw, 2.9rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 0 0 14px;
  color: var(--line-white);
}

.page-about .ab-sec__lead {
  margin: 0;
  max-width: 62ch;
  color: var(--moss);
}

/* ---------- 时间轴 ---------- */
.page-about .ab-sec--axis {
  border-bottom: 2px solid var(--turf);
}

.page-about .ab-stagebar {
  position: sticky;
  top: var(--bar-h);
  z-index: 6;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 12px 0;
  margin: 0 0 34px;
  background: var(--ink);
  border-top: 2px solid var(--turf);
  border-bottom: 2px solid var(--turf);
  scrollbar-width: thin;
}

.page-about .ab-stagebar__link {
  flex: 0 0 auto;
  font-size: 11.5px;
  letter-spacing: 0.08em;
  padding: 6px 12px;
  border: 2px solid var(--turf);
  color: var(--moss);
  text-decoration: none;
  transition: color var(--ease), background var(--ease), border-color var(--ease);
}

.page-about .ab-stagebar__link:hover,
.page-about .ab-stagebar__link:focus-visible {
  color: var(--ink);
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-about .ab-tl {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-about .ab-tl::before {
  content: "";
  position: absolute;
  left: 17px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--amber) 0%, var(--cyan-deep) 40%, var(--cyan) 78%, var(--pulse) 100%);
  opacity: 0.85;
}

.page-about .ab-tl__node {
  position: relative;
  padding: 0 0 34px 50px;
}

.page-about .ab-tl__node:last-child {
  padding-bottom: 4px;
}

.page-about .ab-tl__dot {
  position: absolute;
  left: 11px;
  top: 6px;
  width: 14px;
  height: 14px;
  background: var(--amber);
  box-shadow: var(--glow-amber);
  transition: background var(--ease), box-shadow var(--ease), transform var(--ease);
}

.page-about .ab-tl__node--now .ab-tl__dot {
  background: var(--pulse);
  box-shadow: var(--glow-pulse);
  animation: ab-pulse 1.6s ease-in-out infinite;
}

@keyframes ab-pulse {
  0%, 100% { box-shadow: 0 0 6px rgba(255, 61, 85, 0.35); }
  50% { box-shadow: var(--glow-pulse); }
}

.page-about .ab-tl__node:hover .ab-tl__dot {
  background: var(--cyan);
  box-shadow: var(--glow);
  transform: scale(1.15);
}

.page-about .ab-tl__node--now:hover .ab-tl__dot {
  animation: none;
  background: var(--pulse);
  box-shadow: var(--glow-pulse);
}

.page-about .ab-tl__stage {
  margin: 0 0 6px;
  font-size: 11.5px;
  font-style: italic;
  letter-spacing: 0.1em;
  color: var(--moss);
}

.page-about .ab-tl__title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.1rem, 4.4vw, 1.55rem);
  line-height: 1.25;
  letter-spacing: -0.01em;
  margin: 0 0 8px;
  color: var(--line-white);
}

.page-about .ab-tl__desc {
  margin: 0;
  max-width: 60ch;
  color: var(--moss);
  transition: color var(--ease);
}

.page-about .ab-tl__node:hover .ab-tl__desc {
  color: var(--line-white);
}

/* ---------- 暖纸色章节 ---------- */
.page-about .ab-sec--paper {
  background: var(--paper);
  color: var(--ink);
  border-top: 3px solid var(--ink-deep);
  border-bottom: 3px solid var(--ink-deep);
}

.page-about .ab-sec--paper .eyebrow {
  color: var(--ab-cyan-ink);
}

.page-about .ab-sec--paper .ab-sec__title {
  color: var(--ink);
}

.page-about .ab-sec--paper .ab-sec__lead {
  color: #3E4F46;
}

.page-about .ab-sec--paper .note {
  color: #566A5E;
}

.page-about .ab-sec--paper .media {
  border-color: var(--ink);
  box-shadow: 8px 8px 0 var(--turf);
}

.page-about .ab-sec--paper .media__cap {
  background: var(--ink-deep);
  color: var(--moss);
  border-top-color: var(--turf);
}

/* ---------- 团队 ---------- */
.page-about .ab-team {
  display: grid;
  gap: 30px;
}

.page-about .ab-table-wrap {
  overflow-x: auto;
  border: 3px solid var(--ink);
  box-shadow: 8px 8px 0 var(--turf);
  background: var(--paper);
}

.page-about .ab-table {
  width: 100%;
  min-width: 480px;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 13.5px;
  color: var(--ink);
}

.page-about .ab-table caption {
  text-align: left;
  padding: 12px 14px;
  font-style: italic;
  font-size: 12px;
  color: #566A5E;
  border-bottom: 2px solid var(--ink);
}

.page-about .ab-table th,
.page-about .ab-table td {
  text-align: left;
  padding: 13px 14px;
  vertical-align: top;
  border-bottom: 1px solid var(--ab-line-dark);
  line-height: 1.6;
}

.page-about .ab-table thead th {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #566A5E;
  border-bottom: 2px solid var(--ink);
}

.page-about .ab-table tbody th {
  font-weight: 700;
  white-space: nowrap;
}

.page-about .ab-table tbody td:nth-child(2) {
  text-align: right;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 19px;
  font-variant-numeric: tabular-nums;
  color: var(--ink);
  border-bottom: 2px solid var(--ab-cyan-ink);
  white-space: nowrap;
}

.page-about .ab-table tbody tr {
  transition: background var(--ease);
}

.page-about .ab-table tbody tr:hover {
  background: var(--turf);
}

.page-about .ab-table tbody tr:hover th,
.page-about .ab-table tbody tr:hover td {
  color: var(--paper);
  border-bottom-color: rgba(241, 231, 214, 0.24);
}

.page-about .ab-table tbody tr:hover td:nth-child(2) {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

.page-about .ab-team__media {
  margin: 0;
}

/* ---------- 上线节奏 ---------- */
.page-about .ab-sec--rhythm {
  border-bottom: 2px solid var(--turf);
}

.page-about .ab-rhythm {
  list-style: none;
  margin: 0 0 26px;
  padding: 0;
  display: grid;
  gap: 2px;
  background: var(--turf);
  border: 2px solid var(--turf);
}

.page-about .ab-rhythm__step {
  background: var(--ink);
  padding: 20px 18px 22px;
  transition: background var(--ease);
}

.page-about .ab-rhythm__step:hover {
  background: var(--turf);
}

.page-about .ab-rhythm__time {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-style: italic;
  letter-spacing: 0.12em;
  color: var(--cyan);
  margin-bottom: 10px;
  font-variant-numeric: tabular-nums;
}

.page-about .ab-rhythm__step--hot .ab-rhythm__time {
  color: var(--amber);
  text-shadow: var(--glow-amber);
}

.page-about .ab-rhythm__label {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.05rem;
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin: 0 0 8px;
  color: var(--line-white);
}

.page-about .ab-rhythm__desc {
  margin: 0;
  font-size: 13.5px;
  color: var(--moss);
  line-height: 1.7;
}

.page-about .ab-rhythm__foot {
  margin: 0;
  max-width: 66ch;
  color: var(--moss);
  font-size: 13.5px;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
}

.page-about .pulse-tag {
  display: inline-block;
  flex: 0 0 auto;
  padding: 3px 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-style: italic;
  letter-spacing: 0.08em;
  color: var(--line-white);
  background: var(--pulse);
  box-shadow: var(--glow-pulse);
  animation: ab-tag 1.6s ease-in-out infinite;
}

@keyframes ab-tag {
  0%, 100% { box-shadow: 0 0 6px rgba(255, 61, 85, 0.3); }
  50% { box-shadow: var(--glow-pulse); }
}

/* ---------- 赛区 ---------- */
.page-about .ab-region {
  display: grid;
  gap: 32px;
}

.page-about .ab-region__lead {
  margin: 0 0 22px;
  max-width: 58ch;
  color: #3E4F46;
}

.page-about .ab-cities {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .ab-cities__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  font-size: 13px;
  border: 2px solid var(--ink);
  color: var(--ink);
  background: rgba(10, 26, 20, 0.04);
  transition: background var(--ease), color var(--ease);
}

.page-about .ab-cities__item:hover {
  background: var(--ink);
  color: var(--paper);
}

.page-about .ab-cities__dot {
  width: 8px;
  height: 8px;
  background: var(--amber);
  flex: 0 0 auto;
}

.page-about .ab-region__visual {
  display: grid;
  gap: 24px;
}

.page-about .ab-map {
  margin: 0;
  border: 3px solid var(--ink);
  box-shadow: 8px 8px 0 var(--turf);
  background: var(--ink);
  padding: 4px;
}

.page-about .ab-map__svg {
  display: block;
  width: 100%;
  height: auto;
  color: var(--cyan-deep);
}

.page-about .ab-map__dots circle {
  fill: var(--amber);
  stroke: var(--ink);
  stroke-width: 2;
}

.page-about .ab-map__dots circle:first-child {
  fill: var(--cyan);
}

.page-about .ab-map__labels text {
  fill: var(--moss);
  font-family: var(--font-mono);
  font-size: 12px;
  font-style: italic;
}

.page-about .ab-map .media__cap {
  background: var(--ink);
  border-top: 2px solid var(--turf);
}

.page-about .ab-region__tex {
  margin: 0;
}

/* ---------- 合作生态 ---------- */
.page-about .ab-sec--partners {
  border-bottom: 2px solid var(--turf);
}

.page-about .ab-partners {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
  background: var(--turf);
  border: 2px solid var(--turf);
}

.page-about .ab-partners__item {
  background: var(--ink);
  padding: 22px 18px 24px;
  position: relative;
  transition: background var(--ease), box-shadow var(--ease);
}

.page-about .ab-partners__item:hover {
  background: var(--turf);
  box-shadow: inset 4px 0 0 var(--cyan);
}

.page-about .ab-partners__idx {
  display: block;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--amber);
  margin-bottom: 10px;
}

.page-about .ab-partners__name {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.15rem;
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin: 0 0 8px;
  color: var(--line-white);
}

.page-about .ab-partners__desc {
  margin: 0;
  font-size: 13.5px;
  color: var(--moss);
  line-height: 1.7;
}

/* ---------- 收尾 ---------- */
.page-about .ab-sec--outro {
  background: var(--ink-deep);
  padding-bottom: 72px;
}

.page-about .ab-outro__title {
  margin-bottom: 26px;
}

.page-about .ab-outro__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 2px solid var(--turf);
}

.page-about .ab-outro__row {
  border-bottom: 2px solid var(--turf);
}

.page-about .ab-outro__link {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px 20px;
  padding: 18px 4px;
  text-decoration: none;
  transition: padding var(--ease), background var(--ease);
}

.page-about .ab-outro__link:hover,
.page-about .ab-outro__link:focus-visible {
  padding-left: 16px;
  background: rgba(56, 225, 196, 0.07);
}

.page-about .ab-outro__k {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 1.1rem;
  letter-spacing: -0.01em;
  color: var(--cyan);
}

.page-about .ab-outro__v {
  font-size: 13px;
  color: var(--moss);
  line-height: 1.65;
}

.page-about .ab-outro__note {
  margin: 24px 0 0;
  font-size: 12px;
  font-style: italic;
  color: var(--moss-dark);
}

/* ---------- 断点 ---------- */
@media (min-width: 700px) {
  .page-about .ab-wrap {
    padding: 0 32px;
  }

  .page-about .ab-sec {
    padding: 76px 0;
  }

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

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

  .page-about .ab-outro__link {
    grid-template-columns: 180px minmax(0, 1fr);
    align-items: baseline;
  }
}

@media (min-width: 1024px) {
  .page-about .ab-stagebar {
    top: 0;
  }

  .page-about .ab-hero {
    padding: 42px 0 78px;
  }

  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

  .page-about .ab-hero__media {
    margin-top: 22px;
  }

  .page-about .ab-fact {
    padding: 18px 16px 20px;
  }

  .page-about .ab-tl__node {
    display: grid;
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 0 28px;
    padding-left: 54px;
  }

  .page-about .ab-tl__stage {
    grid-column: 1;
    margin: 4px 0 0;
    text-align: right;
  }

  .page-about .ab-tl__body {
    grid-column: 2;
  }

  .page-about .ab-rhythm {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .ab-team {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }

  .page-about .ab-region {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

  .page-about .ab-region__visual {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.72fr);
    gap: 22px;
    align-items: start;
  }
}

@media (min-width: 1280px) {
  .page-about .ab-sec {
    padding: 96px 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-tl__node--now .ab-tl__dot,
  .page-about .pulse-tag {
    animation: none;
  }
}
<<<END>>>