/* ============================================================
   奇异果赛场 · 平台总览页 /overview/
   作用域：.page-about
   ============================================================ */

.page-about {
  --about-rail-w: 210px;
  -webkit-text-size-adjust: 100%;
}

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

/* ---------- 面包屑 ---------- */

.page-about .about-crumb {
  padding-top: clamp(16px, 3vw, 28px);
}

.page-about .about-crumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  line-height: 1.6;
  color: var(--moss);
}

.page-about .about-crumb li {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.page-about .about-crumb li + li::before {
  content: "/";
  color: var(--track-deep);
  font-family: var(--font-mono);
}

.page-about .about-crumb a {
  color: var(--moss);
  text-decoration: none;
  border-bottom: 1px solid var(--track-deep);
  transition: color var(--dur) ease, border-color var(--dur) ease;
}

.page-about .about-crumb a:hover {
  color: var(--kiwi-deep);
  border-color: var(--kiwi);
}

.page-about .about-crumb li[aria-current="page"] {
  color: var(--seed);
  font-weight: 700;
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 44px);
  padding-block: clamp(20px, 3.2vw, 36px) clamp(30px, 5vw, 56px);
}

.page-about .about-kicker {
  display: inline-block;
  margin: 0 0 16px;
  padding: 6px 14px;
  border-radius: var(--r-pill);
  background: var(--kiwi);
  color: var(--cream);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.1em;
  line-height: 1.4;
}

.page-about .about-h1 {
  margin: 0 0 18px;
  max-width: 20ch;
  font-size: clamp(28px, 6.2vw, 52px);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--seed);
}

.page-about .about-lede {
  margin: 0 0 26px;
  max-width: 54ch;
  font-size: clamp(15.5px, 1.5vw, 18px);
  line-height: 1.78;
  color: var(--seed);
}

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

/* ---------- 按钮 ---------- */

.page-about .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border: 2px solid transparent;
  border-radius: var(--r-pill);
  font-family: inherit;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: transform var(--dur) ease, background-color var(--dur) ease,
    color var(--dur) ease, border-color var(--dur) ease;
}

.page-about .btn:hover {
  transform: translateY(-2px);
}

.page-about .btn--kiwi {
  background: var(--kiwi);
  color: var(--cream);
}

.page-about .btn--kiwi:hover {
  background: var(--kiwi-deep);
}

.page-about .btn--lime {
  background: var(--lime);
  color: var(--seed);
}

.page-about .btn--lime:hover {
  background: #d9ff52;
}

.page-about .btn--ghost {
  background: transparent;
  color: var(--seed);
  border-color: var(--seed);
}

.page-about .btn--ghost:hover {
  background: var(--seed);
  color: var(--cream);
}

/* ---------- 首屏数字块 ---------- */

.page-about .kpi-stack {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .kpi {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: clamp(16px, 2.4vw, 24px);
  border: 2px solid var(--seed);
  border-radius: var(--r-card);
  position: relative;
  overflow: hidden;
  transition: transform var(--dur) ease;
}

.page-about .kpi::after {
  content: "";
  position: absolute;
  right: -22px;
  bottom: -22px;
  width: 76px;
  height: 76px;
  border-radius: 50%;
  background: rgba(251, 247, 236, 0.14);
  pointer-events: none;
}

.page-about .kpi:hover {
  transform: translateY(-4px);
}

.page-about .kpi-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(28px, 4.4vw, 40px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
}

.page-about .kpi-label {
  font-size: 13px;
  font-weight: 600;
  line-height: 1.55;
  letter-spacing: 0.02em;
}

.page-about .kpi--seed {
  background: var(--seed);
  border-color: var(--seed);
}

.page-about .kpi--seed .kpi-num {
  color: var(--lime);
}

.page-about .kpi--seed .kpi-label {
  color: var(--on-dark);
}

.page-about .kpi--kiwi {
  background: var(--kiwi);
  border-color: var(--kiwi-deep);
}

.page-about .kpi--kiwi::after {
  background: rgba(204, 245, 63, 0.22);
}

.page-about .kpi--kiwi .kpi-num {
  color: var(--cream);
}

.page-about .kpi--kiwi .kpi-label {
  color: rgba(251, 247, 236, 0.9);
}

.page-about .kpi--lime {
  background: var(--lime);
  border-color: var(--seed);
}

.page-about .kpi--lime::after {
  background: rgba(36, 26, 18, 0.08);
}

.page-about .kpi--lime .kpi-num {
  color: var(--seed);
}

.page-about .kpi--lime .kpi-label {
  color: rgba(36, 26, 18, 0.76);
}

/* ---------- 纵向轨道 + 内容流 ---------- */

.page-about .about-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 4vw, 48px);
  padding-bottom: clamp(36px, 5vw, 64px);
}

/* ---------- 轨道 ---------- */

.page-about .rail-head {
  margin: 0 0 10px;
  font-size: 11.5px;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--moss);
}

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

.page-about .rail-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 13px 7px 9px;
  border: 1.5px solid var(--track-deep);
  border-radius: var(--r-pill);
  background: var(--card);
  color: var(--moss);
  font-size: 13.5px;
  font-weight: 600;
  line-height: 1.4;
  text-decoration: none;
  transition: color var(--dur) ease, border-color var(--dur) ease,
    background-color var(--dur) ease;
}

.page-about .rail-link:hover {
  color: var(--kiwi-deep);
  border-color: var(--kiwi);
  background: #f4fae9;
}

.page-about .rail-dot {
  width: 14px;
  height: 14px;
  flex: 0 0 14px;
  border-radius: 50%;
  background: var(--track);
  transition: background-color var(--dur) ease;
}

.page-about .rail-link:hover .rail-dot {
  background: var(--lime);
}

/* ---------- 章节通用 ---------- */

.page-about .about-flow {
  min-width: 0;
}

.page-about .flow-section {
  scroll-margin-top: 108px;
}

.page-about .flow-section + .flow-section {
  margin-top: clamp(34px, 5vw, 60px);
  padding-top: clamp(28px, 4vw, 48px);
  border-top: 6px solid var(--track);
}

.page-about .flow-head {
  margin-bottom: clamp(18px, 2.8vw, 30px);
}

.page-about .flow-kicker {
  display: inline-block;
  margin: 0 0 10px;
  padding: 2px 3px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--kiwi-deep);
  background-image: linear-gradient(transparent 62%, rgba(204, 245, 63, 0.55) 62%);
}

.page-about .flow-h2 {
  margin: 0 0 12px;
  font-size: clamp(21px, 3.4vw, 34px);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--seed);
}

.page-about .flow-lede {
  margin: 0;
  max-width: 64ch;
  font-size: clamp(15px, 1.3vw, 16.5px);
  line-height: 1.78;
  color: var(--moss);
}

/* ---------- 平台做什么 ---------- */

.page-about .what-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
}

.page-about .what-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(18px, 2.6vw, 26px);
  border: 2px solid var(--seed);
  border-radius: var(--r-card);
  background: var(--card);
  transition: transform var(--dur) ease, background-color var(--dur) ease,
    box-shadow var(--dur) ease;
}

.page-about .what-card:hover {
  transform: translateY(-4px);
  background: var(--card-hover);
  box-shadow: 0 10px 0 -4px var(--track);
}

.page-about .what-idx {
  display: inline-block;
  align-self: flex-start;
  padding: 3px 9px;
  border-radius: 5px;
  background: var(--seed);
  color: var(--lime);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1.5;
}

.page-about .what-card h3 {
  margin: 0;
  font-size: 16.5px;
  font-weight: 800;
  line-height: 1.45;
  letter-spacing: -0.01em;
  color: var(--seed);
}

.page-about .what-card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--moss);
}

/* ---------- 赛事覆盖范围 ---------- */

.page-about .coverage-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 3vw, 30px);
}

.page-about .about-figure {
  margin: 0;
  border: 2px solid var(--seed);
  border-radius: var(--r-card);
  overflow: hidden;
  background: var(--track);
}

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

.page-about .ring-wrap {
  position: relative;
  width: min(258px, 74%);
  margin: 0 auto;
  aspect-ratio: 1 / 1;
}

.page-about .ring-wrap svg {
  display: block;
  width: 100%;
  height: 100%;
}

.page-about .ring-center {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  margin: 0;
  pointer-events: none;
}

.page-about .ring-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(34px, 6vw, 46px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--seed);
}

.page-about .ring-cap {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--moss);
}

.page-about .coverage-list {
  display: grid;
  gap: 10px;
  margin: clamp(18px, 2.6vw, 26px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .cov-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 12px 14px;
  border-left: 5px solid var(--kiwi);
  border-radius: 0 var(--r-card) var(--r-card) 0;
  background: var(--card);
}

.page-about .cov-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--moss);
}

.page-about .cov-tag {
  display: inline-block;
  padding: 3px 9px;
  border-radius: 5px;
  background: var(--seed);
  color: var(--cream);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.06em;
  line-height: 1.6;
  white-space: nowrap;
}

.page-about .cov-tag--kiwi {
  background: var(--kiwi);
}

.page-about .cov-tag--orange {
  background: var(--orange);
}

/* ---------- 内容体系 ---------- */

.page-about .tag-wall {
  counter-reset: tagidx;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(132px, 1fr));
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .tag-wall li {
  position: relative;
  padding: 15px 14px 15px 40px;
  border: 1.5px solid var(--track-deep);
  border-radius: var(--r-card);
  background: var(--card);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--seed);
  transition: transform var(--dur) ease, border-color var(--dur) ease,
    background-color var(--dur) ease;
}

.page-about .tag-wall li::before {
  counter-increment: tagidx;
  content: counter(tagidx, decimal-leading-zero);
  position: absolute;
  left: 13px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 11.5px;
  font-weight: 700;
  color: var(--moss);
  letter-spacing: 0.02em;
}

.page-about .tag-wall li:hover {
  transform: translateY(-3px);
  border-color: var(--kiwi);
}

.page-about .tag-wall li:nth-child(4n + 1) {
  background: rgba(111, 175, 60, 0.13);
  border-color: rgba(111, 175, 60, 0.5);
}

.page-about .tag-wall li:nth-child(4n + 2) {
  background: rgba(204, 245, 63, 0.32);
  border-color: rgba(111, 175, 60, 0.45);
}

.page-about .tag-wall li:nth-child(4n + 3) {
  background: rgba(242, 112, 58, 0.11);
  border-color: rgba(242, 112, 58, 0.42);
}

/* ---------- 更新节奏 ---------- */

.page-about .cadence-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
}

.page-about .cadence-card {
  display: flex;
  flex-direction: column;
  gap: 9px;
  padding: clamp(16px, 2.4vw, 24px);
  border: 2px solid var(--track-deep);
  border-radius: var(--r-card);
  background: var(--card);
  transition: transform var(--dur) ease;
}

.page-about .cadence-card:hover {
  transform: translateY(-4px);
}

.page-about .cadence-num {
  display: inline-flex;
  align-items: baseline;
  gap: 5px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(24px, 3.4vw, 32px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--kiwi-deep);
}

.page-about .cadence-unit {
  font-family: var(--font-sans);
  font-size: 0.45em;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: inherit;
  opacity: 0.82;
}

.page-about .cadence-card h3 {
  margin: 0;
  font-size: 16px;
  font-weight: 800;
  line-height: 1.5;
  color: var(--seed);
}

.page-about .cadence-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--moss);
}

.page-about .cadence-card--dark {
  background: var(--panel);
  border-color: var(--panel);
}

.page-about .cadence-card--dark .cadence-num {
  color: var(--lime);
}

.page-about .cadence-card--dark h3 {
  color: var(--cream);
}

.page-about .cadence-card--dark p {
  color: var(--on-dark);
}

.page-about .cadence-card--kiwi {
  background: var(--kiwi);
  border-color: var(--kiwi-deep);
}

.page-about .cadence-card--kiwi .cadence-num {
  color: var(--lime);
}

.page-about .cadence-card--kiwi h3 {
  color: var(--cream);
}

.page-about .cadence-card--kiwi p {
  color: rgba(251, 247, 236, 0.92);
}

/* ---------- 发展历程 ---------- */

.page-about .history-figure {
  margin: 0 0 clamp(20px, 3vw, 32px);
  border: 2px solid var(--seed);
  border-radius: var(--r-card);
  overflow: hidden;
  background: var(--track);
}

.page-about .history-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 7 / 3;
  object-fit: cover;
}

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

.page-about .history-item {
  display: grid;
  grid-template-columns: 74px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
}

.page-about .history-year {
  display: block;
  padding: 9px 6px;
  border-radius: 8px;
  background: var(--seed);
  color: var(--lime);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(19px, 2.4vw, 24px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  text-align: center;
}

.page-about .history-body {
  padding-bottom: 16px;
  border-bottom: 4px solid var(--track);
}

.page-about .history-item:last-child .history-body {
  padding-bottom: 0;
  border-bottom: none;
}

.page-about .history-body h3 {
  margin: 0 0 7px;
  font-size: 16.5px;
  font-weight: 800;
  line-height: 1.45;
  color: var(--seed);
}

.page-about .history-body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--moss);
}

/* ---------- 团队与核对 ---------- */

.page-about .team-kpis {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
  margin-bottom: clamp(22px, 3.2vw, 34px);
}

.page-about .team-kpi {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: clamp(18px, 2.6vw, 26px);
  border-radius: var(--r-card);
  position: relative;
  overflow: hidden;
  transition: transform var(--dur) ease;
}

.page-about .team-kpi:hover {
  transform: translateY(-4px);
}

.page-about .team-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(32px, 5vw, 46px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
}

.page-about .team-label {
  font-size: 13px;
  font-weight: 600;
  line-height: 1.6;
}

.page-about .team-kpi--a {
  background: var(--seed);
}

.page-about .team-kpi--a .team-num {
  color: var(--lime);
}

.page-about .team-kpi--a .team-label {
  color: var(--on-dark);
}

.page-about .team-kpi--b {
  background: var(--kiwi);
}

.page-about .team-kpi--b .team-num {
  color: var(--cream);
}

.page-about .team-kpi--b .team-label {
  color: rgba(251, 247, 236, 0.9);
}

.page-about .team-kpi--c {
  background: var(--lime);
}

.page-about .team-kpi--c .team-num {
  color: var(--seed);
}

.page-about .team-kpi--c .team-label {
  color: rgba(36, 26, 18, 0.76);
}

.page-about .team-detail {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 3vw, 30px);
}

.page-about .team-figure {
  margin: 0;
  border: 2px solid var(--seed);
  border-radius: var(--r-card);
  overflow: hidden;
  background: var(--track);
}

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

/* ---------- 可展开内容组 ---------- */

.page-about .team-acc {
  display: grid;
  gap: 10px;
  align-content: start;
}

.page-about .acc-item {
  border: 2px solid var(--track-deep);
  border-radius: var(--r-card);
  background: var(--card);
  overflow: hidden;
  transition: border-color var(--dur) ease, background-color var(--dur) ease;
}

.page-about .acc-item.is-open {
  border-color: var(--kiwi);
  background: #f5fae9;
}

.page-about .acc-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  width: 100%;
  margin: 0;
  padding: 15px 18px;
  border: 0;
  background: transparent;
  font-family: inherit;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--seed);
  text-align: left;
  cursor: pointer;
}

.page-about .acc-sign {
  position: relative;
  width: 18px;
  height: 18px;
  flex: 0 0 18px;
}

.page-about .acc-sign::before,
.page-about .acc-sign::after {
  content: "";
  position: absolute;
  background: var(--kiwi-deep);
  transition: transform var(--dur) ease;
}

.page-about .acc-sign::before {
  top: 2px;
  bottom: 2px;
  left: 50%;
  width: 2px;
  transform: translateX(-50%);
}

.page-about .acc-sign::after {
  left: 2px;
  right: 2px;
  top: 50%;
  height: 2px;
  transform: translateY(-50%);
}

.page-about .acc-item.is-open .acc-sign::before {
  transform: translateX(-50%) scaleY(0);
}

.page-about .acc-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

.page-about .acc-item.is-open .acc-panel {
  max-height: 460px;
}

.page-about .acc-body {
  padding: 0 18px 18px;
}

.page-about .acc-body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--moss);
}

.page-about .acc-body a {
  color: var(--kiwi-deep);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 2px solid rgba(111, 175, 60, 0.45);
}

.page-about .acc-body a:hover {
  border-bottom-color: var(--kiwi);
}

/* ---------- 收口区 ---------- */

.page-about .about-closer {
  position: relative;
  margin-top: clamp(26px, 4vw, 48px);
  padding-top: calc(clamp(56px, 8vw, 96px) + 34px);
  padding-bottom: clamp(52px, 7vw, 88px);
  background: var(--panel);
  clip-path: polygon(0 34px, 100% 0, 100% 100%, 0 100%);
}

.page-about .about-closer::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: min(340px, 46%);
  height: 6px;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 48% 100%);
  background: var(--orange);
}

.page-about .closer-inner {
  position: relative;
  display: grid;
  gap: 16px;
  max-width: 620px;
}

.page-about .closer-h2 {
  margin: 0;
  font-size: clamp(23px, 3.6vw, 38px);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: var(--cream);
}

.page-about .closer-p {
  margin: 0;
  max-width: 52ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--on-dark);
}

.page-about .closer-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 6px;
}

.page-about .about-closer .btn--ghost {
  color: var(--cream);
  border-color: rgba(251, 247, 236, 0.5);
}

.page-about .about-closer .btn--ghost:hover {
  background: var(--cream);
  color: var(--panel);
  border-color: var(--cream);
}

/* ============================================================
   响应式
   ============================================================ */

@media (min-width: 560px) {
  .page-about .kpi-stack {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

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

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

  .page-about .what-card:first-child {
    grid-column: 1 / -1;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.32fr) minmax(0, 1fr);
    align-items: end;
  }

  .page-about .kpi-stack {
    grid-template-columns: 1fr;
  }

  .page-about .coverage-grid {
    grid-template-columns: minmax(0, 1.18fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .ring-wrap {
    width: min(238px, 88%);
  }

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

  .page-about .what-card:first-child {
    grid-column: auto;
  }

  .page-about .team-detail {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.08fr);
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-about .about-body {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
  }

  .page-about .about-rail {
    position: sticky;
    top: 100px;
    align-self: start;
  }

  .page-about .rail-head {
    margin-bottom: 14px;
  }

  .page-about .rail-list {
    position: relative;
    display: block;
    padding-left: 3px;
  }

  .page-about .rail-list::before {
    content: "";
    position: absolute;
    left: 10px;
    top: 12px;
    bottom: 12px;
    width: 2px;
    background: var(--track);
  }

  .page-about .rail-link {
    width: 100%;
    padding: 9px 0;
    border: 0;
    border-radius: 0;
    background: transparent;
  }

  .page-about .rail-link:hover {
    background: transparent;
  }

  .page-about .rail-dot {
    position: relative;
    z-index: 1;
    width: 16px;
    height: 16px;
    flex-basis: 16px;
    border: 3px solid var(--cream);
    box-sizing: border-box;
  }
}

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

@media (min-width: 1120px) {
  .page-about .history-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(20px, 3vw, 36px);
  }

  .page-about .history-item:last-child .history-body {
    padding-bottom: 16px;
    border-bottom: 4px solid var(--track);
  }
}

/* ---------- 无障碍与动效降级 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-about .btn,
  .page-about .kpi,
  .page-about .what-card,
  .page-about .rail-link,
  .page-about .rail-dot,
  .page-about .tag-wall li,
  .page-about .cadence-card,
  .page-about .team-kpi,
  .page-about .acc-panel,
  .page-about .acc-sign::before,
  .page-about .acc-sign::after {
    transition: none;
  }

  .page-about .btn:hover,
  .page-about .kpi:hover,
  .page-about .what-card:hover,
  .page-about .tag-wall li:hover,
  .page-about .cadence-card:hover,
  .page-about .team-kpi:hover {
    transform: none;
  }
}
<<<END>>>