.page-about {
  --ab-line: rgba(199, 154, 232, 0.16);
}

/* ---------- 首屏 ---------- */
.page-about .ab-hero {
  position: relative;
  padding-top: clamp(108px, 16vh, 172px);
}

.page-about .ab-hero__crumbs {
  margin-bottom: clamp(24px, 4vw, 44px);
}

.page-about .ab-hero__kicker {
  margin: 0 0 clamp(14px, 2vw, 22px);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--neon);
}

.page-about .ab-hero__title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(40px, 9vw, 118px);
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-about .ab-hero__title em {
  font-style: normal;
  display: inline-block;
  background: linear-gradient(96deg, var(--grape) 0%, var(--frost) 52%, var(--neon) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-about .ab-hero__lead {
  margin: clamp(26px, 4vw, 46px) 0 0;
  max-width: 40em;
  font-size: clamp(16px, 1.5vw, 18px);
  line-height: 1.85;
  color: var(--mist);
}

.page-about .ab-hero__media {
  position: relative;
  margin: clamp(38px, 6vw, 72px) 0 0;
  overflow: hidden;
}

.page-about .ab-hero__media img {
  display: block;
  width: 100%;
  height: clamp(230px, 42vw, 520px);
  object-fit: cover;
  filter: saturate(0.85) brightness(0.86);
}

.page-about .ab-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(11, 7, 20, 0.55) 0%, rgba(11, 7, 20, 0.06) 34%, rgba(11, 7, 20, 0.94) 100%),
    linear-gradient(90deg, rgba(58, 28, 85, 0.45) 0%, rgba(11, 7, 20, 0) 60%);
}

/* ---------- 数字条带 ---------- */
.page-about .ab-stats {
  background: var(--ink-2);
  border-top: 1px solid var(--ab-line);
  border-bottom: 1px solid var(--ab-line);
  padding: clamp(26px, 4vw, 42px) 0;
}

.page-about .ab-stats__row {
  display: flex;
  gap: clamp(22px, 4vw, 56px);
  margin: 0;
  padding: 2px 0 8px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-about .ab-stat {
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 108px;
}

.page-about .ab-stat__n {
  font-family: var(--font-mono);
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 500;
  line-height: 1;
  color: var(--neon);
  letter-spacing: 0.01em;
}

.page-about .ab-stat__l {
  font-size: 13px;
  color: var(--mist);
  letter-spacing: 0.04em;
}

/* ---------- 通用章节 ---------- */
.page-about .ab-sec {
  padding: clamp(64px, 10vw, 132px) 0;
  border-bottom: 1px solid var(--ab-line);
}

.page-about .ab-sec__num {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.3em;
  color: var(--neon);
}

.page-about .ab-sec__title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(28px, 4.6vw, 60px);
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--paper);
  max-width: 18em;
}

.page-about .ab-sec__lead {
  margin: clamp(16px, 2.4vw, 26px) 0 0;
  max-width: 38em;
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 时间轴 ---------- */
.page-about .ab-tl {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: clamp(34px, 5vw, 62px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .ab-tl::before {
  content: "";
  position: absolute;
  top: 74px;
  left: 7px;
  width: 2px;
  bottom: 12px;
  background: linear-gradient(180deg, var(--neon), var(--grape) 55%, rgba(123, 63, 160, 0.08));
  border-radius: 2px;
}

.page-about .ab-tl__item {
  padding: 0 0 clamp(26px, 3.4vw, 40px) 30px;
}

.page-about .ab-tl__node summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  gap: 4px;
  padding-right: 26px;
  position: relative;
}

.page-about .ab-tl__node summary::-webkit-details-marker {
  display: none;
}

.page-about .ab-tl__node summary::after {
  content: "+";
  position: absolute;
  top: 2px;
  right: 0;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--mist);
  transition: transform 220ms var(--ease), color 220ms var(--ease);
}

.page-about .ab-tl__node[open] summary::after {
  content: "–";
  color: var(--neon);
}

.page-about .ab-tl__node summary:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 6px;
}

.page-about .ab-tl__year {
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.6vw, 28px);
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--neon);
}

.page-about .ab-tl__mark {
  display: none;
}

.page-about .ab-tl__name {
  font-size: clamp(15px, 1.5vw, 17px);
  font-weight: 600;
  color: var(--paper);
  letter-spacing: 0.02em;
}

.page-about .ab-tl__note {
  margin: 12px 0 0;
  max-width: 30em;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--mist);
}

.page-about .ab-lineage__foot {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 34px);
  margin-top: clamp(8px, 2vw, 20px);
  padding-top: clamp(28px, 4vw, 44px);
  border-top: 1px dashed var(--ab-line);
}

.page-about .ab-beat__t {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 600;
  color: var(--frost);
}

.page-about .ab-beat p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
  max-width: 34em;
}

/* ---------- 提货片区 ---------- */
.page-about .ab-blocks {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 2.6vw, 26px);
  margin-top: clamp(32px, 5vw, 58px);
}

.page-about .ab-block {
  position: relative;
  padding: clamp(24px, 3vw, 34px);
  border: 1px solid var(--ab-line);
  border-radius: var(--r-card);
  background: linear-gradient(160deg, var(--ink-2) 0%, rgba(58, 28, 85, 0.34) 100%);
}

.page-about .ab-block__t {
  margin: 16px 0 10px;
  font-family: var(--font-serif);
  font-size: clamp(19px, 2vw, 24px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--paper);
}

.page-about .ab-block p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.page-about .ab-supply__note {
  margin-top: clamp(24px, 4vw, 40px);
  padding: clamp(24px, 3.4vw, 42px);
}

.page-about .ab-note__t {
  margin: 0 0 14px;
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 700;
  color: #2A1236;
  font-family: var(--font-serif);
}

.page-about .ab-supply__note p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.85;
  color: #3B2A46;
  max-width: 44em;
}

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

/* ---------- 批次标签 ---------- */
.page-about .ab-batch__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 52px);
  align-items: start;
}

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

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

.page-about .ab-card {
  margin-top: clamp(22px, 3vw, 32px);
  padding: clamp(20px, 2.6vw, 28px);
  border: 1px solid rgba(242, 193, 78, 0.34);
  border-radius: var(--r-card);
  background: rgba(21, 16, 36, 0.8);
}

.page-about .ab-card__head {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.2em;
  color: var(--neon);
}

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

.page-about .ab-card__fields li {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--ab-line);
  font-size: 14.5px;
}

.page-about .ab-card__fields li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .ab-card__k {
  flex: 0 0 auto;
  min-width: 6.5em;
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.05em;
}

.page-about .ab-card__v {
  color: var(--paper);
}

.page-about .ab-card__foot {
  margin: 18px 0 0;
  font-size: 13px;
  color: var(--mist);
  line-height: 1.7;
}

.page-about .ab-batch__tail {
  margin: clamp(22px, 3vw, 30px) 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--frost);
  max-width: 36em;
}

/* ---------- 编辑分工 ---------- */
.page-about .ab-team {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 34px);
  margin-top: clamp(32px, 5vw, 54px);
}

.page-about .ab-team__col {
  padding-top: 20px;
  border-top: 2px solid var(--grape);
}

.page-about .ab-team__t {
  margin: 0 0 12px;
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 700;
  color: var(--paper);
}

.page-about .ab-team__d {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.page-about .ab-team__m {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--neon);
}

.page-about .ab-editorial__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 46px);
  margin-top: clamp(34px, 5vw, 56px);
  align-items: start;
}

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

.page-about .ab-editorial__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-about .ab-editorial__text p {
  margin: 0 0 16px;
  max-width: 38em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.page-about .ab-editorial__link {
  color: var(--frost);
}

.page-about .ab-editorial__link a,
.page-about .ab-channels__tail a,
.page-about .ab-co__tail a {
  color: var(--neon);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
}

.page-about .ab-editorial__link a:hover,
.page-about .ab-channels__tail a:hover,
.page-about .ab-co__tail a:hover {
  color: var(--paper);
}

/* ---------- 双通道 ---------- */
.page-about .ab-ch {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 2.6vw, 28px);
  margin-top: clamp(32px, 5vw, 56px);
}

.page-about .ab-ch__pane {
  padding: clamp(24px, 3vw, 36px);
  border-radius: var(--r-card);
  border: 1px solid var(--ab-line);
  background: linear-gradient(150deg, rgba(21, 16, 36, 0.95), rgba(58, 28, 85, 0.28));
}

.page-about .ab-ch__pane--beta {
  border-color: rgba(242, 193, 78, 0.4);
  background: linear-gradient(150deg, rgba(58, 28, 85, 0.72), rgba(11, 7, 20, 0.92));
}

.page-about .ab-ch__t {
  margin: 16px 0 12px;
  font-family: var(--font-serif);
  font-size: clamp(20px, 2.3vw, 28px);
  font-weight: 700;
  color: var(--paper);
  line-height: 1.3;
}

.page-about .ab-ch__pane p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.page-about .ab-channels__tail {
  margin: clamp(24px, 3.4vw, 36px) 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
  max-width: 40em;
}

/* ---------- 合作共创 ---------- */
.page-about .ab-co {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 34px);
  margin-top: clamp(32px, 5vw, 56px);
}

.page-about .ab-co__item {
  position: relative;
  padding: clamp(22px, 3vw, 32px);
  background: rgba(21, 16, 36, 0.72);
  border-left: 3px solid var(--neon);
  border-radius: 0 var(--r-card) var(--r-card) 0;
}

.page-about .ab-co__no {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.24em;
  color: var(--vine);
}

.page-about .ab-co__t {
  margin: 0 0 12px;
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 700;
  color: var(--paper);
}

.page-about .ab-co__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.page-about .ab-co__cta {
  display: grid;
  gap: 20px;
  margin-top: clamp(30px, 4.4vw, 52px);
  padding: clamp(24px, 3.4vw, 40px);
  border: 1px solid rgba(242, 193, 78, 0.3);
  border-radius: var(--r-card);
  background: linear-gradient(120deg, rgba(123, 63, 160, 0.34), rgba(11, 7, 20, 0.9));
}

.page-about .ab-co__cta p {
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(18px, 2.1vw, 24px);
  font-weight: 700;
  line-height: 1.45;
  color: var(--paper);
}

.page-about .ab-co__btns {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.page-about .ab-co__tail {
  margin: clamp(22px, 3vw, 32px) 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
  max-width: 40em;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .ab-lineage__foot {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .ab-editorial__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  }

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

  .page-about .ab-co__cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (min-width: 900px) {
  .page-about .ab-tl {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0 clamp(16px, 2vw, 30px);
  }

  .page-about .ab-tl::before {
    top: 56px;
    left: 2%;
    right: 2%;
    width: auto;
    bottom: auto;
    height: 2px;
    background: linear-gradient(90deg, rgba(123, 63, 160, 0.1), var(--neon) 22%, var(--grape) 78%, rgba(123, 63, 160, 0.1));
  }

  .page-about .ab-tl__item {
    padding: 0;
  }

  .page-about .ab-tl__node summary {
    padding-right: 22px;
  }

  .page-about .ab-tl__mark {
    display: block;
    width: 13px;
    height: 13px;
    margin: 14px 0 16px;
    border-radius: 50%;
    background: var(--neon);
    box-shadow: 0 0 0 5px rgba(11, 7, 20, 0.95), 0 0 0 7px rgba(242, 193, 78, 0.28);
  }

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

  .page-about .ab-block--a {
    margin-top: 0;
  }

  .page-about .ab-block--b {
    margin-top: clamp(20px, 3vw, 42px);
  }

  .page-about .ab-block--c {
    margin-top: clamp(8px, 1.4vw, 20px);
  }

  .page-about .ab-batch__grid {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1fr);
    gap: clamp(34px, 5vw, 68px);
  }

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

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

@media (min-width: 1200px) {
  .page-about .ab-hero__lead {
    font-size: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-tl__node summary::after {
    transition: none;
  }
}