.page-about {
  --ab-gap: clamp(20px, 3vw, 40px);
  --ab-panel: rgba(20, 36, 58, 0.72);
  --ab-line: var(--line);
  background: var(--ink-900);
  color: var(--paper);
  font-family: var(--f-sans);
  overflow-x: hidden;
}

.page-about .num,
.page-about .mono {
  font-family: var(--f-mono);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
}

.page-about .prose {
  max-width: 68ch;
  line-height: 1.85;
  font-size: var(--step-4);
}

.page-about .prose p {
  margin: 0 0 1.1em;
}

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

/* ---------- 首屏 ---------- */
.page-about .ab-hero {
  padding: clamp(28px, 5vw, 56px) 0 clamp(32px, 5vw, 64px);
  background:
    radial-gradient(120% 90% at 12% -10%, rgba(30, 122, 75, 0.28), transparent 58%),
    radial-gradient(90% 70% at 96% 6%, rgba(232, 176, 58, 0.14), transparent 60%),
    var(--ink-900);
  border-bottom: 1px solid var(--line);
}

.page-about .crumbs {
  font-size: var(--step-6);
  letter-spacing: 0.04em;
  margin-bottom: clamp(20px, 3vw, 34px);
  color: rgba(244, 241, 232, 0.6);
}

.page-about .crumbs a {
  color: rgba(244, 241, 232, 0.75);
  text-decoration: none;
}

.page-about .crumbs a:hover {
  color: var(--gold);
}

.page-about .crumbs__sep {
  margin: 0 8px;
  color: var(--hair);
}

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

.page-about .ab-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--ab-gap);
  align-items: end;
}

.page-about .ab-hero__lead .kicker {
  margin: 0 0 14px;
  font-size: var(--step-6);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--green-hi);
  font-family: var(--f-mono);
}

.page-about .ab-hero h1 {
  margin: 0 0 20px;
  font-size: clamp(30px, 5.4vw, var(--step-1));
  line-height: 1.16;
  letter-spacing: -0.02em;
  font-weight: 900;
  color: var(--paper);
  max-width: 20ch;
}

.page-about .ab-hero .lede {
  margin: 0 0 26px;
  font-size: clamp(15px, 1.6vw, var(--step-4));
  line-height: 1.85;
  color: rgba(244, 241, 232, 0.8);
  max-width: 46ch;
}

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

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

.page-about .ab-hero__figure .figure__img {
  border: 1px solid var(--line-strong);
  background: var(--ink-700);
  aspect-ratio: 2 / 1;
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
}

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

.page-about .figure__cap {
  margin-top: 10px;
  font-size: var(--step-6);
  letter-spacing: 0.05em;
  color: rgba(244, 241, 232, 0.55);
  font-family: var(--f-mono);
}

.page-about .ab-figures {
  list-style: none;
  margin: clamp(28px, 4vw, 48px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .ab-figures__item {
  background: var(--ink-800);
  padding: 18px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .ab-figures__item--live {
  background: linear-gradient(160deg, rgba(30, 122, 75, 0.32), var(--ink-800) 70%);
}

.page-about .ab-figures__num {
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 700;
  color: var(--gold);
  line-height: 1;
}

.page-about .ab-figures__unit {
  font-size: 0.55em;
  margin-left: 3px;
  color: var(--gold-soft);
}

.page-about .ab-figures__label {
  font-size: var(--step-6);
  letter-spacing: 0.1em;
  color: rgba(244, 241, 232, 0.62);
}

/* ---------- 章节目录条 ---------- */
.page-about .ab-toc {
  position: sticky;
  top: var(--strip-h);
  z-index: 30;
  background: rgba(11, 20, 32, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(6px);
}

.page-about .ab-toc__inner {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-top: 10px;
  padding-bottom: 10px;
}

.page-about .ab-toc__label {
  flex: none;
  font-size: var(--step-6);
  letter-spacing: 0.14em;
  color: var(--green-hi);
  border: 1px solid var(--line-strong);
  padding: 3px 8px;
}

.page-about .ab-toc__list {
  list-style: none;
  margin: 0;
  padding: 0 0 2px;
  display: flex;
  gap: 22px;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-about .ab-toc__list::-webkit-scrollbar {
  display: none;
}

.page-about .ab-toc__list a {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  white-space: nowrap;
  font-size: var(--step-5);
  text-decoration: none;
  color: rgba(244, 241, 232, 0.7);
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
  transition: color 160ms ease-out, border-color 160ms ease-out;
}

.page-about .ab-toc__list a .mono {
  font-size: var(--step-6);
  color: var(--green-hi);
}

.page-about .ab-toc__list a:hover {
  color: var(--paper);
  border-color: var(--gold);
}

/* ---------- 章节通用 ---------- */
.page-about .section {
  padding: clamp(40px, 6vw, 80px) 0;
  border-bottom: 1px solid var(--line);
}

.page-about .section--panel {
  background: var(--ink-800);
}

.page-about .section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 16px;
  padding-bottom: 16px;
  margin-bottom: clamp(24px, 3.5vw, 40px);
  border-bottom: 1px solid var(--line-strong);
}

.page-about .section__num {
  font-size: var(--step-6);
  letter-spacing: 0.18em;
  color: var(--ink-900);
  background: var(--gold);
  padding: 3px 8px;
  line-height: 1.4;
}

.page-about .section__title {
  margin: 0;
  font-size: clamp(22px, 3.2vw, var(--step-2));
  font-weight: 900;
  letter-spacing: -0.01em;
  line-height: 1.28;
  color: inherit;
  flex: 1 1 320px;
}

.page-about .section__sub {
  margin: 0;
  font-size: var(--step-6);
  letter-spacing: 0.1em;
  color: var(--hair);
}

/* ---------- 01 赛季历程 ---------- */
.page-about .ab-seasons__lead {
  margin-bottom: clamp(26px, 4vw, 44px);
  color: rgba(244, 241, 232, 0.86);
}

.page-about .ab-seasons {
  overflow-x: auto;
  padding-bottom: 14px;
  border-top: 1px solid var(--line-strong);
  scrollbar-color: var(--green) transparent;
  scrollbar-width: thin;
}

.page-about .ab-seasons__track {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  min-width: max-content;
}

.page-about .ab-seasons__item {
  position: relative;
  width: 190px;
  flex: none;
  padding: 26px 16px 18px;
  border-right: 1px solid var(--line);
  background: var(--ab-panel);
}

.page-about .ab-seasons__item::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--green) 0%, var(--cyan) 100%);
  transform: skewY(-2deg);
  transform-origin: left top;
}

.page-about .ab-seasons__item--now {
  background: linear-gradient(180deg, rgba(232, 176, 58, 0.2), var(--ab-panel) 65%);
}

.page-about .ab-seasons__item--now::after {
  background: linear-gradient(90deg, var(--gold) 0%, var(--green-hi) 100%);
}

.page-about .ab-seasons__idx {
  display: block;
  font-size: var(--step-5);
  font-weight: 600;
  color: var(--paper);
  letter-spacing: 0.04em;
}

.page-about .ab-seasons__tag {
  display: inline-block;
  margin: 10px 0 12px;
  font-size: var(--step-6);
  letter-spacing: 0.12em;
  color: var(--green-hi);
  border: 1px solid var(--line-strong);
  padding: 2px 7px;
}

.page-about .ab-seasons__item--now .ab-seasons__tag {
  color: var(--gold);
  border-color: rgba(232, 176, 58, 0.5);
}

.page-about .ab-seasons__note {
  margin: 0;
  font-size: var(--step-5);
  line-height: 1.7;
  color: rgba(244, 241, 232, 0.66);
}

/* ---------- 02 数据来源 ---------- */
.page-about .ab-sources__grid {
  align-items: start;
}

.page-about .ab-sources__main {
  color: rgba(244, 241, 232, 0.86);
}

.page-about .ab-sources__side {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.page-about .ab-board {
  background: var(--ink-900);
  border: 1px solid var(--line-strong);
}

.page-about .ab-board .board__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  background: rgba(30, 122, 75, 0.16);
}

.page-about .ab-board .board__title {
  margin: 0;
  font-size: var(--step-4);
  font-weight: 700;
  color: var(--paper);
}

.page-about .ab-board .board__meta {
  font-size: var(--step-6);
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-about .ab-board__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .ab-board__item {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 11px 16px;
  font-size: var(--step-5);
  color: rgba(244, 241, 232, 0.78);
  border-bottom: 1px solid var(--line);
}

.page-about .ab-board__item:last-child {
  border-bottom: 0;
}

.page-about .ab-board__item .mono {
  color: var(--green-hi);
  font-size: var(--step-6);
  letter-spacing: 0.08em;
}

.page-about .ab-sources__note {
  margin: 0;
  font-size: var(--step-5);
  line-height: 1.8;
  color: rgba(244, 241, 232, 0.6);
  padding-left: 14px;
  border-left: 2px solid var(--cyan);
}

/* ---------- 03 标签体系（纸面） ---------- */
.page-about .ab-tags {
  background: var(--paper-2);
  color: var(--ink-900);
}

.page-about .ab-tags .section__head {
  border-bottom-color: rgba(11, 20, 32, 0.18);
}

.page-about .ab-tags .section__num {
  background: var(--green);
  color: var(--paper);
}

.page-about .ab-tags .section__title {
  color: var(--ink-900);
}

.page-about .ab-tags .section__sub {
  color: rgba(11, 20, 32, 0.55);
}

.page-about .ab-tags__intro {
  margin-bottom: clamp(26px, 4vw, 40px);
  align-items: start;
}

.page-about .ab-tags__intro .prose {
  color: rgba(11, 20, 32, 0.82);
}

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

.page-about .ab-tags__figure .figure__img {
  border: 1px solid rgba(11, 20, 32, 0.24);
  aspect-ratio: 3 / 2;
  overflow: hidden;
  background: var(--ink-700);
}

.page-about .ab-tags__figure .figure__cap {
  color: rgba(11, 20, 32, 0.6);
}

.page-about .ab-tags__grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: rgba(11, 20, 32, 0.22);
  border: 1px solid rgba(11, 20, 32, 0.22);
}

.page-about .ab-tag-card {
  background: var(--paper);
  padding: 18px 16px 20px;
  transition: background 160ms ease-out, transform 160ms ease-out;
}

.page-about .ab-tag-card:hover {
  background: #fff;
  transform: translateY(-2px);
}

.page-about .ab-tag-card__num {
  display: block;
  font-size: var(--step-6);
  letter-spacing: 0.14em;
  color: var(--green);
  margin-bottom: 10px;
}

.page-about .ab-tag-card__name {
  margin: 0 0 8px;
  font-size: var(--step-4);
  font-weight: 700;
  color: var(--ink-900);
  letter-spacing: 0.01em;
}

.page-about .ab-tag-card__desc {
  margin: 0;
  font-size: var(--step-5);
  line-height: 1.72;
  color: rgba(11, 20, 32, 0.68);
}

/* ---------- 04 两队对比 ---------- */
.page-about .ab-verdict {
  background:
    radial-gradient(100% 80% at 88% 0%, rgba(74, 127, 168, 0.22), transparent 62%),
    var(--ink-900);
}

.page-about .ab-verdict__grid {
  align-items: start;
}

.page-about .ab-verdict__aside {
  border-left: 3px solid var(--gold);
  padding: 4px 0 4px 20px;
}

.page-about .ab-verdict__kicker {
  margin: 0 0 6px;
  font-size: var(--step-6);
  letter-spacing: 0.16em;
  color: var(--green-hi);
}

.page-about .ab-verdict__big {
  margin: 0 0 14px;
  font-size: clamp(30px, 4.6vw, 52px);
  font-weight: 700;
  line-height: 1;
  color: var(--gold);
  letter-spacing: -0.01em;
}

.page-about .ab-verdict__text {
  margin: 0;
  font-size: var(--step-5);
  line-height: 1.85;
  color: rgba(244, 241, 232, 0.72);
}

.page-about .ab-verdict__main {
  color: rgba(244, 241, 232, 0.86);
}

.page-about .ab-verdict__cards {
  margin-top: clamp(26px, 4vw, 44px);
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .ab-vcard {
  background: var(--ab-panel);
  padding: 22px 18px;
  position: relative;
}

.page-about .ab-vcard::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 34px;
  height: 2px;
  background: var(--green-hi);
}

.page-about .ab-vcard__title {
  margin: 0 0 10px;
  font-size: var(--step-3);
  font-weight: 700;
  color: var(--paper);
}

.page-about .ab-vcard__desc {
  margin: 0;
  font-size: var(--step-5);
  line-height: 1.8;
  color: rgba(244, 241, 232, 0.68);
}

/* ---------- 05 团队班次 ---------- */
.page-about .ab-team__grid {
  align-items: start;
}

.page-about .ab-team__text {
  color: rgba(244, 241, 232, 0.86);
}

.page-about .ab-team__shifts {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line-strong);
}

.page-about .ab-shift {
  background: var(--ink-900);
  padding: 16px 18px;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: baseline;
  gap: 6px 14px;
}

.page-about .ab-shift__time {
  grid-column: 1 / -1;
  font-size: var(--step-5);
  letter-spacing: 0.08em;
  color: var(--gold);
}

.page-about .ab-shift__name {
  font-size: var(--step-4);
  font-weight: 700;
  color: var(--paper);
}

.page-about .ab-shift__desc {
  grid-column: 1 / -1;
  margin: 0;
  font-size: var(--step-5);
  line-height: 1.72;
  color: rgba(244, 241, 232, 0.66);
}

.page-about .ab-team__figure {
  margin: clamp(28px, 4vw, 44px) 0 0;
}

.page-about .ab-team__figure .figure__img {
  border: 1px solid var(--line-strong);
  aspect-ratio: 16 / 6;
  overflow: hidden;
  background: var(--ink-900);
}

.page-about .ab-team__figure .figure__cap {
  color: rgba(244, 241, 232, 0.55);
}

/* ---------- 06 合作生态 ---------- */
.page-about .ab-eco {
  background:
    radial-gradient(110% 90% at 0% 100%, rgba(30, 122, 75, 0.24), transparent 60%),
    var(--ink-900);
  border-bottom: 0;
}

.page-about .ab-eco__grid {
  align-items: stretch;
}

.page-about .ab-eco__card {
  background: var(--ab-panel);
  border: 1px solid var(--line);
  border-top: 3px solid var(--green);
  padding: 22px 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-about .ab-eco__idx {
  font-size: var(--step-6);
  letter-spacing: 0.2em;
  color: var(--green-hi);
}

.page-about .ab-eco__title {
  margin: 0;
  font-size: var(--step-3);
  font-weight: 700;
  color: var(--paper);
}

.page-about .ab-eco__desc {
  margin: 0;
  font-size: var(--step-5);
  line-height: 1.82;
  color: rgba(244, 241, 232, 0.7);
}

.page-about .ab-eco__strip {
  margin-top: clamp(26px, 4vw, 44px);
  padding: clamp(20px, 3vw, 30px);
  background: linear-gradient(100deg, rgba(232, 176, 58, 0.16), rgba(11, 20, 32, 0.4) 62%);
  border: 1px solid var(--line-strong);
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.page-about .ab-eco__strip-text {
  margin: 0;
  font-size: var(--step-4);
  line-height: 1.75;
  color: var(--paper);
}

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

.page-about .ab-eco__more {
  margin: clamp(22px, 3vw, 32px) 0 0;
  font-size: var(--step-5);
  line-height: 1.85;
  color: rgba(244, 241, 232, 0.66);
  max-width: 62ch;
}

.page-about .ab-eco__more a {
  color: var(--green-hi);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 201, 122, 0.45);
}

.page-about .ab-eco__more a:hover {
  color: var(--gold);
  border-bottom-color: rgba(232, 176, 58, 0.6);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .ab-figures {
    grid-template-columns: repeat(4, 1fr);
  }

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

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

  .page-about .ab-seasons__item {
    width: 210px;
  }
}

@media (min-width: 900px) {
  .page-about .ab-hero__grid {
    grid-template-columns: 7fr 5fr;
    gap: clamp(28px, 4vw, 56px);
  }

  .page-about .ab-sources__grid,
  .page-about .ab-team__grid,
  .page-about .ab-verdict__grid {
    display: grid;
    grid-template-columns: 7fr 5fr;
    gap: clamp(24px, 3.5vw, 48px);
  }

  .page-about .ab-verdict__grid {
    grid-template-columns: 5fr 7fr;
  }

  .page-about .ab-team__grid {
    grid-template-columns: 5fr 7fr;
  }

  .page-about .ab-tags__intro {
    grid-template-columns: 7fr 5fr;
  }

  .page-about .ab-eco__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
  }

  .page-about .ab-eco__strip {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .page-about .ab-eco__strip-text {
    max-width: 58ch;
  }

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

@media (min-width: 1024px) {
  .page-about .ab-hero {
    padding-top: clamp(40px, 5vw, 72px);
  }

  .page-about .ab-seasons__item {
    width: 232px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-tag-card {
    transition: none;
  }

  .page-about .ab-tag-card:hover {
    transform: none;
  }
}