.page-about {
  --ab-line: rgba(47, 243, 201, 0.26);
  --ab-hair: rgba(143, 163, 184, 0.28);
  --ab-hair-strong: rgba(143, 163, 184, 0.45);
  background: var(--void);
  color: var(--text);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-about .ab-hero {
  position: relative;
  padding: 34px 0 54px;
  background:
    radial-gradient(1100px 520px at 84% -14%, rgba(47, 243, 201, 0.16), transparent 64%),
    linear-gradient(180deg, var(--ink) 0%, var(--void) 82%);
  border-bottom: 3px solid var(--coal);
  overflow: hidden;
}

.page-about .ab-hero::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 46%;
  height: 5px;
  background: linear-gradient(90deg, transparent, var(--orange));
  opacity: 0.85;
}

.page-about .ab-hero__grid {
  display: grid;
  gap: 26px;
  margin-top: 20px;
}

.page-about .ab-hero__lead .label {
  color: var(--amber);
}

.page-about .ab-hero h1 {
  margin: 12px 0 16px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.95rem, 7.2vw, 3.5rem);
  line-height: 1.14;
  letter-spacing: -0.015em;
  color: var(--cream);
}

.page-about .ab-hero__text {
  max-width: 34em;
  margin: 0 0 22px;
  font-size: 1.02rem;
  line-height: 1.85;
  color: var(--text-dim);
}

.page-about .ab-hero__figure {
  margin: 0;
  border: 3px solid var(--coal);
  box-shadow: var(--shadow);
}

/* 数据条 */
.page-about .ab-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 32px 0 0;
  padding: 0;
  background: var(--ab-hair);
  border: 2px solid var(--ab-hair-strong);
}

.page-about .ab-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin: 0;
  padding: 15px 16px 17px;
  background: var(--ink);
}

.page-about .ab-stat__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 1.65rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--cyan);
}

.page-about .ab-stat__label {
  margin: 0;
  color: var(--text-dim);
}

/* ---------- 通用小标题 ---------- */
.page-about .ab-head {
  max-width: 46em;
  margin-bottom: 30px;
}

.page-about .ab-head h2,
.page-about .ab-origin h2,
.page-about .ab-team h2,
.page-about .ab-cta h2 {
  margin: 10px 0 12px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.45rem, 5vw, 2.1rem);
  line-height: 1.26;
  letter-spacing: -0.01em;
  color: var(--cream);
}

.page-about .ab-head .label {
  color: var(--cyan);
}

.page-about .ab-head__text,
.page-about .ab-team__text {
  margin: 0;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--text-dim);
}

/* ---------- 起点 ---------- */
.page-about .ab-origin {
  background: var(--void);
}

.page-about .ab-origin__grid {
  display: grid;
  gap: 26px;
}

.page-about .ab-origin__aside {
  border-left: 4px solid var(--cyan);
  padding-left: 16px;
}

.page-about .ab-origin__mark {
  margin: 8px 0 10px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(3rem, 15vw, 5.4rem);
  line-height: 0.88;
  letter-spacing: -0.04em;
  color: transparent;
  -webkit-text-stroke: 2px rgba(47, 243, 201, 0.55);
}

.page-about .ab-origin__note {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.7;
}

.page-about .ab-origin .prose p {
  color: var(--text);
  opacity: 0.88;
}

.page-about .ab-origin__quote {
  margin: 26px 0 0;
  padding: 20px 22px;
  background: var(--cream);
  color: var(--coal);
  border-left: 7px solid var(--orange);
  box-shadow: var(--shadow);
  font-family: var(--font-display);
  font-size: 1.1rem;
  line-height: 1.75;
}

/* ---------- 比赛日流程 ---------- */
.page-about .ab-method__grid {
  align-items: stretch;
}

.page-about .ab-method .card__title {
  color: var(--cyan);
}

.page-about .ab-method .card__text {
  color: var(--text-dim);
  line-height: 1.82;
}

.page-about .ab-method .card__label {
  color: var(--amber);
}

/* ---------- 团队 ---------- */
.page-about .ab-team {
  background: linear-gradient(180deg, var(--ink) 0%, var(--void) 100%);
}

.page-about .ab-team__intro {
  max-width: 46em;
  margin-bottom: 26px;
}

.page-about .ab-team__figure {
  margin: 0 0 30px;
  border: 3px solid var(--coal);
  box-shadow: var(--shadow);
}

.page-about .ab-team__card {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-about .ab-team__card .card__label {
  color: var(--mist);
}

.page-about .ab-team__card .card__title {
  color: var(--cream);
  font-size: 1.12rem;
}

.page-about .ab-team__card .card__text {
  color: var(--text-dim);
  line-height: 1.82;
}

/* ---------- 赛季时间线 ---------- */
.page-about .ab-road__figure {
  margin: 0 0 34px;
  border: 3px solid var(--coal);
  box-shadow: var(--shadow);
}

.page-about .ab-timeline {
  position: relative;
  margin: 0;
  padding: 0 0 0 26px;
  list-style: none;
}

.page-about .ab-timeline::before {
  content: "";
  position: absolute;
  top: 10px;
  bottom: 10px;
  left: 5px;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan) 0%, rgba(47, 243, 201, 0.08) 100%);
}

.page-about .ab-timeline__item {
  position: relative;
  padding-bottom: 22px;
}

.page-about .ab-timeline__item::before {
  content: "";
  position: absolute;
  top: 9px;
  left: -25px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--void);
  border: 2px solid var(--cyan);
  box-shadow: 0 0 0 4px rgba(47, 243, 201, 0.12);
}

.page-about .ab-timeline__phase {
  margin: 0 0 8px;
  color: var(--amber);
}

.page-about .ab-timeline .expand {
  background: var(--ink);
  border: 2px solid var(--ab-hair);
  box-shadow: 6px 6px 0 rgba(4, 20, 14, 0.55);
  padding: 2px 18px;
}

.page-about .ab-timeline .expand[open] {
  border-color: var(--cyan);
}

.page-about .ab-timeline summary {
  padding: 15px 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.03rem;
  line-height: 1.5;
  color: var(--cream);
  cursor: pointer;
}

.page-about .ab-timeline .expand__body {
  padding: 0 0 18px;
}

.page-about .ab-timeline .expand__body p {
  margin: 0;
  font-size: 0.97rem;
  line-height: 1.85;
  color: var(--text-dim);
}

/* ---------- 覆盖范围 ---------- */
.page-about .ab-cover {
  background: var(--void);
}

.page-about .ab-cover__scroll {
  overflow-x: auto;
  border: 2px solid var(--ab-hair-strong);
}

.page-about .ab-cover__scroll .data-table {
  min-width: 620px;
  margin: 0;
}

.page-about .ab-cover__foot {
  margin: 22px 0 0;
  max-width: 42em;
  font-size: 0.95rem;
  line-height: 1.85;
}

/* ---------- 合作生态 ---------- */
.page-about .ab-eco__item {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-about .ab-eco__item .card__label {
  color: var(--orange);
}

.page-about .ab-eco__item .card__title {
  color: var(--cream);
  font-size: 1.1rem;
}

.page-about .ab-eco__item .card__text {
  color: var(--text-dim);
  line-height: 1.82;
}

.page-about .ab-awards {
  margin-top: 36px;
  padding-top: 26px;
  border-top: 2px dashed var(--ab-hair);
}

.page-about .ab-awards .label {
  color: var(--cyan);
}

.page-about .ab-awards__list {
  display: grid;
  gap: 14px;
  margin-top: 16px;
}

.page-about .ab-award {
  background: rgba(28, 21, 18, 0.55);
  border: 2px solid var(--ab-hair);
  padding: 2px 18px;
}

.page-about .ab-award[open] {
  border-color: var(--amber);
}

.page-about .ab-award summary {
  padding: 15px 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1rem;
  color: var(--cream);
  cursor: pointer;
}

.page-about .ab-award .expand__body {
  padding: 0 0 16px;
}

.page-about .ab-award .expand__body p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--text-dim);
}

/* ---------- 收尾行动 ---------- */
.page-about .ab-cta {
  background: var(--void);
  padding-bottom: 58px;
}

.page-about .ab-cta__box {
  position: relative;
  display: grid;
  gap: 22px;
  padding: 26px 22px 28px;
  background: linear-gradient(135deg, var(--turf) 0%, var(--ink) 100%);
  border: 3px solid var(--coal);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.page-about .ab-cta__box::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  border-top: 28px solid var(--orange);
  border-left: 28px solid transparent;
}

.page-about .ab-cta .label {
  color: var(--amber);
}

.page-about .ab-cta__text p {
  margin: 0;
  max-width: 40em;
  font-size: 0.98rem;
  line-height: 1.85;
  color: var(--text-dim);
}

.page-about .ab-cta__actions {
  align-self: center;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .ab-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .ab-cta__box {
    padding: 34px 32px;
  }
}

@media (min-width: 900px) {
  .page-about .ab-hero {
    padding: 44px 0 70px;
  }

  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
    gap: 46px;
  }

  .page-about .ab-origin__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: 50px;
    align-items: start;
  }

  .page-about .ab-cta__box {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 32px;
    padding: 40px 44px;
  }

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

@media (min-width: 1040px) {
  .page-about .ab-stats {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-about .ab-timeline {
    padding-left: 0;
  }

  .page-about .ab-timeline::before {
    left: 50%;
    transform: translateX(-1px);
  }

  .page-about .ab-timeline__item {
    width: 50%;
    padding-right: 46px;
    padding-bottom: 28px;
  }

  .page-about .ab-timeline__item::before {
    top: 12px;
    left: auto;
    right: -7px;
  }

  .page-about .ab-timeline__item:nth-child(even) {
    margin-left: 50%;
    padding-right: 0;
    padding-left: 46px;
  }

  .page-about .ab-timeline__item:nth-child(even)::before {
    left: -7px;
    right: auto;
  }

  .page-about .ab-timeline__phase {
    text-align: right;
  }

  .page-about .ab-timeline__item:nth-child(even) .ab-timeline__phase {
    text-align: left;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about * {
    transition: none !important;
    animation: none !important;
  }
}