.page-about {
  --about-gap: clamp(56px, 8vw, 112px);
  background: var(--ink);
  color: var(--paper);
}

.page-about .section {
  padding-block: var(--about-gap);
}

.page-about .section--tight {
  padding-block: clamp(44px, 6vw, 86px);
}

.page-about .breadcrumb {
  margin: 0 0 22px;
  font-size: 13px;
}

.page-about .breadcrumb a {
  color: var(--mist);
  text-decoration: none;
}

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

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(38px, 6vw, 84px) 0 clamp(72px, 10vw, 142px);
  background:
    radial-gradient(110% 80% at 88% 2%, rgba(198, 255, 61, 0.13), transparent 58%),
    linear-gradient(158deg, var(--teal) 0%, var(--ink) 56%, var(--indigo) 100%);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -16%;
  width: 54%;
  height: 170%;
  transform: rotate(-6deg);
  background: linear-gradient(180deg, rgba(198, 255, 61, 0.09), rgba(255, 106, 26, 0.05) 58%, transparent);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 52px;
  background: var(--ink);
  clip-path: polygon(0 100%, 100% 0, 100% 100%);
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(32px, 5vw, 56px);
}

@media (min-width: 960px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 52fr) minmax(0, 48fr);
    align-items: end;
    gap: clamp(40px, 5vw, 80px);
  }
}

.page-about .about-hero__copy .eyebrow {
  margin: 0 0 18px;
}

.page-about .about-hero__copy .h-display {
  margin: 0 0 clamp(20px, 3vw, 30px);
  font-size: clamp(32px, 6.6vw, 68px);
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .about-hero__copy .lede {
  max-width: 62ch;
  margin: 0;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.85;
  color: rgba(244, 247, 251, 0.82);
}

.page-about .about-hero__stats {
  display: grid;
  gap: 12px;
  margin-top: clamp(28px, 4vw, 40px);
  grid-template-columns: repeat(auto-fit, minmax(148px, 1fr));
}

.page-about .about-hero__stats .stat {
  padding: 16px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line-strong);
  background: rgba(7, 20, 38, 0.52);
}

.page-about .about-hero__stats .stat__value {
  display: block;
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: clamp(26px, 3.2vw, 34px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--lime);
}

.page-about .about-hero__stats .stat__label {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.55;
  color: var(--mist);
}

.page-about .about-hero__figure {
  position: relative;
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line-strong);
  box-shadow: 0 28px 66px rgba(3, 8, 18, 0.55);
}

@media (min-width: 960px) {
  .page-about .about-hero__figure {
    transform: rotate(-1.5deg);
  }
}

.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
}

.page-about .about-hero__figure figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 40px 20px 16px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--paper);
  background: linear-gradient(180deg, transparent, rgba(7, 20, 38, 0.9));
}

/* ---------- 品牌起点 ---------- */

.page-about .about-story {
  background: var(--ink);
}

.page-about .about-story__inner {
  display: grid;
  gap: clamp(24px, 3vw, 40px);
}

@media (min-width: 900px) {
  .page-about .about-story__inner {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: clamp(40px, 6vw, 88px);
    align-items: start;
  }
}

.page-about .about-story__lead .eyebrow {
  margin: 0 0 14px;
}

.page-about .about-story__lead .h-2 {
  margin: 0;
  font-size: clamp(26px, 3.8vw, 42px);
  line-height: 1.2;
  color: var(--paper);
}

.page-about .about-story__body p {
  margin: 0 0 20px;
  font-size: clamp(16px, 1.5vw, 17px);
  line-height: 1.88;
  color: rgba(244, 247, 251, 0.8);
}

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

.page-about .about-story__body a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(198, 255, 61, 0.4);
}

/* ---------- 梯队建制 ---------- */

.page-about .about-squad {
  background:
    radial-gradient(88% 60% at 8% 0%, rgba(198, 255, 61, 0.08), transparent 62%),
    var(--teal);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .about-squad__head {
  max-width: 74ch;
}

.page-about .about-squad__head .eyebrow {
  margin: 0 0 16px;
}

.page-about .about-squad__head .h-1 {
  margin: 0 0 20px;
  font-size: clamp(28px, 4.4vw, 50px);
  line-height: 1.16;
  color: var(--paper);
}

.page-about .about-squad__head .lede {
  margin: 0;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.85;
  color: rgba(244, 247, 251, 0.8);
}

.page-about .about-squad__switch {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin: clamp(28px, 4vw, 44px) 0 clamp(20px, 3vw, 32px);
}

.page-about .chip--season {
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  border-radius: var(--pill);
  border: 1px solid rgba(198, 255, 61, 0.42);
  background: rgba(198, 255, 61, 0.1);
  color: var(--lime);
  font-family: var(--font-data);
  font-size: 14px;
  letter-spacing: 0.04em;
  transition: background var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .chip--season:hover {
  background: rgba(198, 255, 61, 0.18);
  transform: translateY(-2px);
}

.page-about .chip--season .chip__label {
  color: var(--mist);
  font-size: 12px;
}

.page-about .chip--season .chip__value {
  font-weight: 700;
  font-size: 16px;
}

.page-about .about-squad__switch-hint {
  margin: 0;
  font-size: 13px;
  color: var(--mist);
}

.page-about .squad-panels {
  display: grid;
  gap: 18px;
}

.page-about .squad-panel {
  padding: clamp(22px, 3vw, 36px);
  border-radius: var(--radius);
  border: 1px solid var(--line-strong);
  background: rgba(7, 20, 38, 0.55);
}

.page-about .squad-panel[data-hidden] {
  display: none;
}

.page-about .squad-panel__inner {
  display: grid;
  gap: 22px;
}

@media (min-width: 860px) {
  .page-about .squad-panel__inner {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }

  .page-about .squad-panel--flip .squad-panel__inner {
    grid-template-columns: minmax(0, 9fr) minmax(0, 3fr);
  }

  .page-about .squad-panel--flip .squad-panel__tag {
    order: 2;
    text-align: right;
  }

  .page-about .squad-panel--flip .squad-panel__body {
    order: 1;
  }
}

.page-about .squad-panel__tag {
  display: grid;
  gap: 8px;
  align-content: start;
}

.page-about .squad-panel__age {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: clamp(40px, 6.4vw, 68px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--lime);
}

.page-about .squad-panel__meta {
  font-size: 13px;
  line-height: 1.6;
  color: var(--mist);
}

.page-about .squad-panel__body h3 {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-size: clamp(19px, 2.2vw, 25px);
  font-weight: 700;
  line-height: 1.3;
  color: var(--paper);
}

.page-about .squad-panel__body p {
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.82;
  color: rgba(244, 247, 251, 0.8);
}

.page-about .squad-panel__list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .squad-panel__list li {
  display: flex;
  gap: 10px;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(244, 247, 251, 0.78);
}

.page-about .squad-panel__list li::before {
  content: "";
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  margin-top: 9px;
  border-radius: 50%;
  background: var(--lime);
}

.page-about .about-squad__figure {
  margin: clamp(32px, 5vw, 56px) 0 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
}

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

.page-about .about-squad__figure figcaption {
  padding: 14px 20px 18px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--mist);
  background: rgba(7, 20, 38, 0.6);
}

/* ---------- 晋升通道 ---------- */

.page-about .about-ladder {
  background: var(--ink);
}

.page-about .about-ladder__head {
  max-width: 72ch;
  margin-bottom: clamp(36px, 5vw, 64px);
}

.page-about .about-ladder__head .eyebrow {
  margin: 0 0 16px;
}

.page-about .about-ladder__head .h-1 {
  margin: 0 0 20px;
  font-size: clamp(28px, 4.4vw, 50px);
  line-height: 1.16;
  color: var(--paper);
}

.page-about .about-ladder__head .lede {
  margin: 0;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.85;
  color: rgba(244, 247, 251, 0.8);
}

.page-about .about-ladder__steps {
  display: grid;
  gap: 20px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: ladder;
}

@media (min-width: 900px) {
  .page-about .about-ladder__steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(20px, 3vw, 32px);
  }
}

.page-about .ladder-step {
  position: relative;
  padding: clamp(24px, 3vw, 34px);
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: linear-gradient(170deg, rgba(36, 27, 74, 0.62), rgba(7, 20, 38, 0.72));
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .ladder-step:hover {
  transform: translateY(-4px);
  border-color: rgba(198, 255, 61, 0.34);
}

.page-about .ladder-step__num {
  display: inline-block;
  margin-bottom: 14px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--lime);
}

.page-about .ladder-step .h-3 {
  margin: 0 0 12px;
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.4;
  color: var(--paper);
}

.page-about .ladder-step p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(244, 247, 251, 0.78);
}

.page-about .ladder-step a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(198, 255, 61, 0.4);
}

/* ---------- 团队分工 ---------- */

.page-about .about-team {
  background:
    radial-gradient(80% 70% at 92% 6%, rgba(36, 27, 74, 0.85), transparent 60%),
    var(--ink-deep);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .about-team__inner {
  display: grid;
  gap: clamp(30px, 4vw, 52px);
}

@media (min-width: 960px) {
  .page-about .about-team__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(40px, 5vw, 76px);
    align-items: start;
  }
}

.page-about .about-team__copy .eyebrow {
  margin: 0 0 16px;
}

.page-about .about-team__copy .h-1 {
  margin: 0 0 20px;
  font-size: clamp(28px, 4.2vw, 48px);
  line-height: 1.16;
  color: var(--paper);
}

.page-about .about-team__copy > p {
  margin: 0 0 22px;
  font-size: clamp(16px, 1.5vw, 17px);
  line-height: 1.86;
  color: rgba(244, 247, 251, 0.8);
}

.page-about .about-team__copy a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(198, 255, 61, 0.4);
}

.page-about .about-team__roles {
  display: grid;
  gap: 12px;
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
}

@media (min-width: 640px) {
  .page-about .about-team__roles {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .role-card {
  display: grid;
  gap: 6px;
  padding: 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line-strong);
  background: rgba(10, 26, 51, 0.7);
}

.page-about .role-card__num {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  color: var(--lime);
}

.page-about .role-card__name {
  font-size: 15px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .role-card__desc {
  font-size: 13px;
  line-height: 1.65;
  color: var(--mist);
}

.page-about .about-team__figure {
  position: relative;
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line-strong);
}

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

.page-about .about-team__figure figcaption {
  padding: 14px 20px 18px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--mist);
  background: rgba(7, 20, 38, 0.7);
}

/* ---------- 发展节点 ---------- */

.page-about .about-milestones {
  background: var(--ink);
}

.page-about .about-milestones__head {
  margin-bottom: clamp(34px, 5vw, 58px);
}

.page-about .about-milestones__head .eyebrow {
  margin: 0 0 16px;
}

.page-about .about-milestones__head .h-1 {
  margin: 0;
  font-size: clamp(28px, 4.2vw, 48px);
  line-height: 1.16;
  color: var(--paper);
}

.page-about .milestones {
  position: relative;
  margin: 0;
  padding: 4px 0 0 30px;
  list-style: none;
}

.page-about .milestones::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--lime) 0%, var(--indigo) 62%, var(--wine) 100%);
}

.page-about .milestone {
  position: relative;
  padding-bottom: clamp(28px, 4vw, 44px);
}

.page-about .milestone:last-child {
  padding-bottom: 0;
}

.page-about .milestone::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--lime);
}

.page-about .milestone:nth-child(n + 5)::before {
  border-color: var(--orange);
}

.page-about .milestone:nth-child(n + 6)::before {
  border-color: var(--gold);
}

.page-about .milestone__tag {
  display: inline-block;
  margin-bottom: 12px;
  font-size: 12px;
  letter-spacing: 0.06em;
}

.page-about .milestone .h-3 {
  margin: 0 0 10px;
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.4;
  color: var(--paper);
}

.page-about .milestone p {
  max-width: 68ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(244, 247, 251, 0.76);
}

/* ---------- 合作与荣誉 ---------- */

.page-about .about-honor {
  background:
    radial-gradient(90% 80% at 86% 0%, rgba(232, 196, 106, 0.1), transparent 58%),
    var(--wine);
}

.page-about .about-honor__head {
  max-width: 72ch;
  margin-bottom: clamp(34px, 5vw, 58px);
}

.page-about .about-honor__head .eyebrow {
  margin: 0 0 16px;
  color: var(--gold);
}

.page-about .about-honor__head .h-1 {
  margin: 0 0 20px;
  font-size: clamp(28px, 4.2vw, 48px);
  line-height: 1.16;
  color: var(--paper);
}

.page-about .about-honor__head .lede {
  margin: 0;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.85;
  color: rgba(244, 247, 251, 0.82);
}

.page-about .about-honor__grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}

@media (min-width: 960px) {
  .page-about .about-honor__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: clamp(36px, 5vw, 72px);
    align-items: start;
  }
}

.page-about .honor-partners {
  padding: clamp(22px, 3vw, 30px);
  border-radius: var(--radius);
  border: 1px solid rgba(232, 196, 106, 0.28);
  background: rgba(10, 26, 51, 0.42);
}

.page-about .honor-partners .h-3 {
  margin: 0 0 18px;
  font-size: 18px;
  color: var(--paper);
}

.page-about .partner-list {
  display: grid;
  gap: 12px;
  margin: 0 0 18px;
}

.page-about .partner-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(232, 196, 106, 0.18);
}

.page-about .partner-row:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

.page-about .partner-row dt {
  font-size: 15px;
  color: rgba(244, 247, 251, 0.82);
}

.page-about .partner-row dd {
  margin: 0;
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: 17px;
  color: var(--gold);
}

.page-about .partner-row dd .data-num {
  font-size: 24px;
  font-weight: 700;
}

.page-about .honor-partners__note {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

.page-about .honor-partners__note a {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(232, 196, 106, 0.42);
}

.page-about .honor-wall {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid rgba(232, 196, 106, 0.26);
}

.page-about .honor-item {
  position: relative;
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  grid-template-areas:
    "year name"
    "year note";
  gap: 4px 18px;
  padding: 18px 4px;
  border-bottom: 1px solid rgba(232, 196, 106, 0.18);
  transition: background var(--dur) var(--ease);
}

.page-about .honor-item:hover {
  background: rgba(10, 26, 51, 0.36);
}

.page-about .honor-item__year {
  grid-area: year;
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--gold);
  align-self: center;
}

.page-about .honor-item__name {
  grid-area: name;
  font-family: var(--font-head);
  font-size: clamp(16px, 1.8vw, 19px);
  font-weight: 700;
  line-height: 1.4;
  color: var(--paper);
}

.page-about .honor-item__note {
  grid-area: note;
  font-size: 13px;
  line-height: 1.65;
  color: rgba(244, 247, 251, 0.62);
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.page-about .honor-item:hover .honor-item__note,
.page-about .honor-item:focus-within .honor-item__note {
  max-height: 90px;
  opacity: 1;
}

/* ---------- 怎么开始 ---------- */

.page-about .about-cta {
  background:
    radial-gradient(70% 90% at 12% 100%, rgba(198, 255, 61, 0.12), transparent 62%),
    var(--ink);
}

.page-about .about-cta__inner {
  max-width: 82ch;
}

.page-about .about-cta__inner .eyebrow {
  margin: 0 0 16px;
}

.page-about .about-cta__inner .h-1 {
  margin: 0 0 20px;
  font-size: clamp(28px, 4.4vw, 50px);
  line-height: 1.16;
  color: var(--paper);
}

.page-about .about-cta__inner > p {
  margin: 0 0 26px;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.85;
  color: rgba(244, 247, 251, 0.8);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 26px;
}

.page-about .about-cta__contact {
  margin: 0;
  font-size: 14px;
  letter-spacing: 0.02em;
  color: var(--mist);
}

/* ---------- 窄屏收束 ---------- */

@media (max-width: 599px) {
  .page-about .about-hero__stats {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-about .about-cta__actions .btn {
    width: 100%;
    text-align: center;
  }

  .page-about .honor-item {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
      "year"
      "name"
      "note";
    gap: 6px;
  }

  .page-about .honor-item__note {
    max-height: 120px;
    opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ladder-step,
  .page-about .chip--season,
  .page-about .honor-item,
  .page-about .honor-item__note {
    transition: none;
  }

  .page-about .ladder-step:hover {
    transform: none;
  }

  .page-about .chip--season:hover {
    transform: none;
  }

  .page-about .about-hero__figure {
    transform: none;
  }
}