.page-about {
  --ab-idx: clamp(58px, 7.4vw, 118px);
  --ab-side: minmax(0, 252px);
  --ab-mono: var(--mono);
}

.page-about img {
  max-width: 100%;
  height: auto;
}

/* ============ 首屏 ============ */
.page-about .ab-hero {
  position: relative;
  padding: clamp(26px, 4.6vw, 52px) 0 clamp(44px, 6.4vw, 82px);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-about .ab-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(90deg, var(--line) 1px, transparent 1px),
    linear-gradient(0deg, var(--line) 1px, transparent 1px);
  background-size: 76px 76px;
  opacity: .3;
  pointer-events: none;
}

.page-about .ab-hero::after {
  content: "";
  position: absolute;
  top: -18%;
  right: -12%;
  width: clamp(220px, 34vw, 520px);
  height: clamp(220px, 34vw, 520px);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(200, 255, 61, .14) 0%, rgba(200, 255, 61, 0) 68%);
  pointer-events: none;
}

.page-about .ab-hero .ob-shell {
  position: relative;
  z-index: 1;
}

.page-about .ab-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 4.6vw, 58px);
  margin-top: clamp(18px, 3vw, 38px);
}

.page-about .ab-hero__title {
  margin: .42em 0 0;
  font-family: var(--sans);
  font-weight: 200;
  font-size: clamp(33px, 6.4vw, 78px);
  line-height: 1.05;
  letter-spacing: -.012em;
  color: var(--text);
}

.page-about .ab-hero__title em {
  font-style: normal;
  color: var(--lime);
}

.page-about .ab-hero__lede {
  max-width: 54ch;
  margin-top: clamp(16px, 2.4vw, 26px);
  color: var(--muted);
}

.page-about .ab-hero__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 34px);
}

.page-about .ab-hero__rail {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  align-content: end;
}

.page-about .ab-frag {
  position: relative;
  display: grid;
  gap: 8px;
  padding: 15px 17px 17px;
  border: 1px solid var(--line);
  background: var(--deep);
  transition: transform .16s ease, border-color .16s ease;
}

.page-about .ab-frag::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 13px;
  height: 13px;
  background: var(--line);
  clip-path: polygon(100% 0, 0 0, 100% 100%);
}

.page-about .ab-frag:hover {
  transform: translateY(-2px);
  border-color: var(--lime);
}

.page-about .ab-frag__num {
  font-family: var(--score);
  font-weight: 800;
  font-size: clamp(30px, 4.6vw, 44px);
  line-height: .94;
  letter-spacing: -.02em;
  font-variant-numeric: tabular-nums;
  color: var(--text);
}

.page-about .ab-frag__label {
  font-family: var(--ab-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--muted);
}

.page-about .ab-frag--lime {
  border-color: rgba(200, 255, 61, .42);
}

.page-about .ab-frag--lime .ab-frag__num {
  color: var(--lime);
}

.page-about .ab-frag--gold .ab-frag__num {
  color: var(--gold);
}

/* ============ 章节骨架 ============ */
.page-about .ab-chapter {
  padding: clamp(50px, 7vw, 106px) 0;
  border-bottom: 1px solid var(--line);
}

.page-about .ab-chapter--alt {
  background: var(--deep);
}

.page-about .ab-chapter__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 3vw, 32px);
}

.page-about .ab-chapter__idx {
  font-family: var(--score);
  font-weight: 800;
  font-size: clamp(44px, 7.2vw, 94px);
  line-height: .82;
  letter-spacing: -.03em;
  font-variant-numeric: tabular-nums;
  color: rgba(200, 255, 61, .11);
  -webkit-text-stroke: 1px var(--line);
  transition: color .2s ease, -webkit-text-stroke-color .2s ease;
}

.page-about .ab-chapter__body {
  min-width: 0;
}

.page-about .ab-chapter__body .ob-h2 {
  margin: .3em 0 0;
  font-weight: 250;
  font-size: clamp(26px, 4.2vw, 50px);
  line-height: 1.12;
  letter-spacing: -.01em;
  color: var(--text);
}

.page-about .ab-prose--narrow {
  max-width: 60ch;
  margin-top: clamp(14px, 2vw, 22px);
  font-size: 16px;
  line-height: 1.78;
  color: var(--muted);
}

.page-about .ab-prose--narrow p {
  margin: 0 0 1em;
}

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

.page-about .ab-chapter__side {
  display: grid;
  gap: 12px;
  min-width: 0;
  align-content: start;
}

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

.page-about .ab-chapter__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: contrast(1.1) saturate(.92);
  border: 1px solid var(--line);
}

/* ============ 贴纸碎片 ============ */
.page-about .ab-sticker {
  border: 1px solid var(--line);
  border-left: 3px solid var(--lime);
  background: var(--panel);
  padding: 14px 16px 15px;
}

.page-about .ab-chapter--alt .ab-sticker {
  background: rgba(7, 22, 15, .58);
}

.page-about .ab-sticker__k {
  margin: 0 0 8px;
  font-family: var(--ab-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--lime);
}

.page-about .ab-sticker__v {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--text);
}

/* ============ 覆盖范围方阵 ============ */
.page-about .ab-scope {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 2.6vw, 26px);
  margin-top: clamp(22px, 3vw, 36px);
  padding: clamp(16px, 2.4vw, 26px);
  border: 1px solid var(--line);
  background: var(--panel);
}

.page-about .ab-scope__col {
  display: grid;
  gap: 9px;
  align-content: start;
  min-width: 0;
}

.page-about .ab-scope__label {
  font-family: var(--ab-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--muted);
}

.page-about .ab-scope__val {
  font-family: var(--score);
  font-weight: 800;
  font-size: clamp(42px, 6vw, 66px);
  line-height: .88;
  letter-spacing: -.02em;
  font-variant-numeric: tabular-nums;
  color: var(--lime);
}

.page-about .ab-scope__bars {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 5px;
  max-width: 200px;
}

.page-about .ab-scope__bars i {
  display: block;
  height: 11px;
  background: var(--gold);
}

.page-about .ab-scope__cells {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 5px;
  max-width: 210px;
}

.page-about .ab-scope__cells i {
  display: block;
  aspect-ratio: 1 / 1;
  background: var(--mint);
  opacity: .82;
}

.page-about .ab-scope__cells--dense {
  grid-template-columns: repeat(8, minmax(0, 1fr));
  gap: 3px;
  max-width: 224px;
}

.page-about .ab-scope__cells--dense i {
  background: rgba(157, 184, 168, .3);
  opacity: 1;
}

.page-about .ab-scope__cells--dense i:nth-child(5n) {
  background: var(--lime);
}

/* ============ 团队四宫格 ============ */
.page-about .ab-team {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-top: clamp(22px, 3vw, 36px);
  border: 1px solid var(--line);
  background: var(--line);
}

.page-about .ab-team__cell {
  position: relative;
  display: grid;
  gap: 7px;
  align-content: start;
  padding: clamp(16px, 2.2vw, 24px);
  background: var(--ink);
  transition: background .16s ease;
}

.page-about .ab-chapter--alt .ab-team__cell {
  background: var(--deep);
}

.page-about .ab-team__cell::before {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid transparent;
  pointer-events: none;
  transition: border-color .16s ease;
}

.page-about .ab-team__cell:hover,
.page-about .ab-team__cell:focus,
.page-about .ab-team__cell:focus-visible {
  background: var(--panel);
  outline: none;
}

.page-about .ab-team__cell:hover::before,
.page-about .ab-team__cell:focus-visible::before,
.page-about .ab-team__cell:focus::before {
  border-color: var(--lime);
}

.page-about .ab-team__n {
  font-family: var(--score);
  font-weight: 800;
  font-size: clamp(28px, 3.6vw, 40px);
  line-height: 1;
  letter-spacing: -.02em;
  font-variant-numeric: tabular-nums;
  color: var(--lime);
}

.page-about .ab-team__n i {
  margin-left: 4px;
  font-family: var(--ab-mono);
  font-style: normal;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--muted);
}

.page-about .ab-team__t {
  margin: 0;
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
}

.page-about .ab-team__d {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
}

.page-about .ab-team__more {
  margin: 0;
  padding-top: 8px;
  border-top: 1px dashed var(--line);
  font-family: var(--ab-mono);
  font-size: 12px;
  line-height: 1.7;
  color: var(--mint);
}

/* ============ 更新节奏流程 ============ */
.page-about .ab-flow {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: clamp(22px, 3vw, 36px) 0 0;
  padding: 0;
  border: 1px solid var(--line);
  background: var(--line);
}

.page-about .ab-chapter--alt .ab-flow {
  background: rgba(157, 184, 168, .28);
}

.page-about .ab-flow li {
  display: grid;
  gap: 6px;
  align-content: start;
  padding: clamp(14px, 2vw, 20px);
  background: var(--ink);
}

.page-about .ab-flow b {
  font-family: var(--ab-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .14em;
  color: var(--lime);
}

.page-about .ab-flow span {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}

.page-about .ab-flow em {
  font-family: var(--ab-mono);
  font-style: normal;
  font-size: 12px;
  line-height: 1.65;
  color: var(--muted);
}

.page-about .ab-flow__out b {
  color: var(--gold);
}

.page-about .ab-flow__out {
  box-shadow: inset 3px 0 0 var(--gold);
}

/* ============ 赛季归档 ============ */
.page-about .ab-archive {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: clamp(22px, 3vw, 36px) 0 0;
  padding: 0;
}

.page-about .ab-archive li {
  display: grid;
  gap: 8px;
  align-content: start;
  padding: 16px 18px 18px;
  border: 1px solid var(--line);
  border-top: 2px solid var(--mint);
  background: var(--panel);
  transition: transform .16s ease, border-color .16s ease;
}

.page-about .ab-archive li:hover {
  transform: translateY(-2px);
  border-color: var(--mint);
}

.page-about .ab-archive b {
  font-family: var(--ab-mono);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--mint);
}

.page-about .ab-archive span {
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
}

/* ============ 供稿与合作 ============ */
.page-about .ab-contrib {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-top: clamp(22px, 3vw, 36px);
  border: 1px solid var(--line);
  background: var(--line);
}

.page-about .ab-contrib article {
  display: grid;
  gap: 8px;
  align-content: start;
  padding: clamp(16px, 2.2vw, 24px);
  background: var(--deep);
  transition: background .16s ease;
}

.page-about .ab-contrib article:hover {
  background: var(--panel);
}

.page-about .ab-contrib__n {
  font-family: var(--ab-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--gold);
}

.page-about .ab-contrib article .ob-h3 {
  margin: 0;
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
}

.page-about .ab-contrib article p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
}

.page-about .ab-contribute__note {
  margin: clamp(20px, 2.6vw, 28px) 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .ab-contribute__note a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(200, 255, 61, .45);
  transition: border-color .16s ease, color .16s ease;
}

.page-about .ab-contribute__note a:hover,
.page-about .ab-contribute__note a:focus-visible {
  color: var(--mint);
  border-bottom-color: var(--mint);
}

/* ============ 收尾 ============ */
.page-about .ab-outro {
  padding: clamp(50px, 7vw, 100px) 0;
  border-bottom: 1px solid var(--line);
}

.page-about .ab-outro__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 48px);
  align-items: center;
}

.page-about .ab-outro__body .ob-h2 {
  margin: .34em 0 0;
  font-weight: 250;
  font-size: clamp(27px, 4.4vw, 52px);
  line-height: 1.1;
  letter-spacing: -.01em;
  color: var(--text);
}

.page-about .ab-outro__text {
  max-width: 52ch;
  margin: clamp(14px, 2vw, 22px) 0 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--muted);
}

.page-about .ab-outro__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 32px);
}

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

.page-about .ab-outro__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: contrast(1.12) saturate(.88);
  border: 1px solid var(--line);
}

/* ============ 响应式 ============ */
@media (min-width: 620px) {
  .page-about .ab-scope {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

@media (min-width: 760px) {
  .page-about .ab-flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 880px) {
  .page-about .ab-chapter__grid {
    grid-template-columns: var(--ab-idx) minmax(0, 1fr) var(--ab-side);
    gap: clamp(24px, 3.4vw, 52px);
    align-items: start;
  }

  .page-about .ab-chapter__idx {
    position: sticky;
    top: 96px;
  }

  .page-about .ab-chapter:hover .ab-chapter__idx,
  .page-about .ab-chapter:focus-within .ab-chapter__idx {
    -webkit-text-stroke-color: var(--lime);
    color: rgba(200, 255, 61, .16);
  }

  .page-about .ab-chapter__side {
    position: sticky;
    top: 96px;
  }

  .page-about .ab-outro__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.08fr);
  }
}

@media (min-width: 960px) {
  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 1.38fr) minmax(0, .62fr);
    align-items: end;
    gap: clamp(32px, 5vw, 78px);
  }
}

@media (min-width: 1100px) {
  .page-about .ab-scope {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

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

@media (hover: hover) and (pointer: fine) and (min-width: 720px) {
  .page-about .ab-team__more {
    max-height: 0;
    padding-top: 0;
    opacity: 0;
    overflow: hidden;
    border-top-color: transparent;
    transition: max-height .22s ease, opacity .22s ease, padding-top .22s ease, border-top-color .22s ease;
  }

  .page-about .ab-team__cell:hover .ab-team__more,
  .page-about .ab-team__cell:focus .ab-team__more,
  .page-about .ab-team__cell:focus-visible .ab-team__more,
  .page-about .ab-team__cell:focus-within .ab-team__more {
    max-height: 140px;
    padding-top: 8px;
    opacity: 1;
    border-top-color: var(--line);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-frag,
  .page-about .ab-team__cell,
  .page-about .ab-team__cell::before,
  .page-about .ab-team__more,
  .page-about .ab-archive li,
  .page-about .ab-contrib article,
  .page-about .ab-chapter__idx,
  .page-about .ab-contribute__note a {
    transition: none;
  }

  .page-about .ab-frag:hover,
  .page-about .ab-archive li:hover {
    transform: none;
  }
}