.page-about {
  background-color: var(--ink-900);
  color: var(--paper);
  font-family: var(--font-body);
  line-height: 1.78;
  overflow-x: clip;
}

.page-about .breadcrumb {
  padding-top: clamp(14px, 2.5vw, 24px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding-block: clamp(22px, 4vw, 44px) clamp(40px, 6vw, 80px);
  border-bottom: 1.5px solid var(--line);
  background-image:
    radial-gradient(115% 85% at 88% 0%, rgba(61, 245, 176, 0.16), transparent 62%),
    radial-gradient(70% 60% at 0% 100%, rgba(255, 90, 43, 0.1), transparent 62%),
    repeating-linear-gradient(0deg, rgba(168, 255, 221, 0.038) 0 1px, transparent 1px 5px);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
}

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-size: clamp(38px, 8.6vw, 88px);
  font-weight: 700;
  line-height: 0.98;
  letter-spacing: -0.02em;
  margin: 12px 0 18px;
  max-width: 15ch;
}

.page-about .about-hero__text {
  max-width: 44ch;
  margin: 0;
  color: var(--paper);
  font-size: 17px;
}

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

.page-about .about-hero__stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border: 1.5px solid var(--line);
  background-color: var(--ink-800);
  box-shadow: var(--shadow-hard);
}

.page-about .about-stat {
  padding: 16px 16px 18px;
  border-right: 1.5px solid var(--line);
  border-bottom: 1.5px solid var(--line);
  transition: background-color 0.18s var(--ease);
}

.page-about .about-stat:nth-child(2n) {
  border-right: 0;
}

.page-about .about-stat:nth-last-child(-n + 2) {
  border-bottom: 0;
}

.page-about .about-stat:hover {
  background-color: var(--ink-700);
}

.page-about .about-stat__value {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(28px, 5vw, 44px);
  line-height: 1;
  color: var(--neon);
  letter-spacing: -0.01em;
}

.page-about .about-stat__unit {
  font-size: 0.52em;
  margin-left: 2px;
  color: var(--neon-soft);
}

.page-about .about-stat__label {
  display: block;
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.55;
  color: var(--mute);
}

/* ---------- 通用章节 ---------- */
.page-about .about-section {
  padding-block: clamp(40px, 7vw, 88px);
  border-bottom: 1.5px solid var(--line);
}

.page-about .about-section__head {
  display: grid;
  gap: 12px;
  margin-bottom: clamp(24px, 4vw, 44px);
}

.page-about .about-h2 {
  font-family: var(--font-editorial);
  font-weight: 700;
  font-size: clamp(25px, 4.6vw, 40px);
  line-height: 1.26;
  letter-spacing: 0;
  margin: 0;
  max-width: 22ch;
}

.page-about .about-lede {
  margin: 0;
  max-width: 60ch;
  color: var(--mute);
  font-size: 17px;
}

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

/* ---------- 场景 ---------- */
.page-about .about-moments__aside p {
  margin: 0 0 18px;
  color: var(--mute);
  font-size: 16px;
  max-width: 40ch;
}

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

.page-about .about-scenes {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1.5px solid var(--line);
}

.page-about .about-scene {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  padding: 22px 6px;
  border-bottom: 1.5px solid var(--line);
  transition: transform 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-about .about-scene:hover,
.page-about .about-scene:focus-within {
  transform: translateY(-2px);
  border-bottom-color: var(--neon);
}

.page-about .about-scene__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--score);
  padding-top: 6px;
}

.page-about .about-scene__title {
  font-family: var(--font-display);
  font-size: clamp(19px, 2.4vw, 22px);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 8px;
  line-height: 1.3;
}

.page-about .about-scene__text {
  margin: 0;
  color: var(--mute);
  font-size: 16px;
}

/* ---------- 图片 ---------- */
.page-about .about-fig {
  position: relative;
  margin: 0;
  border: 1.5px solid var(--line);
  background-color: var(--ink-800);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

.page-about .about-fig::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(0deg, rgba(8, 19, 15, 0.34) 0 1px, transparent 1px 3px);
}

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

.page-about .about-fig--team {
  aspect-ratio: 14 / 9;
}

.page-about .about-fig--device {
  aspect-ratio: 4 / 3;
}

.page-about .about-fig--band {
  aspect-ratio: 8 / 3;
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-about .about-fig__cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--neon-soft);
  background: linear-gradient(180deg, rgba(8, 19, 15, 0) 0%, rgba(8, 19, 15, 0.9) 60%);
}

/* ---------- 团队 ---------- */
.page-about .about-roster {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-roster > li {
  display: grid;
  grid-template-columns: clamp(56px, 12vw, 92px) minmax(0, 1fr);
  gap: 6px 18px;
  padding: 18px 0;
  border-bottom: 1.5px solid var(--line);
}

.page-about .about-roster > li:first-child {
  border-top: 1.5px solid var(--line);
}

.page-about .about-roster__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(30px, 5vw, 48px);
  line-height: 1;
  color: var(--paper);
  grid-row: span 2;
}

.page-about .about-roster__role {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--neon);
  line-height: 1.3;
}

.page-about .about-roster__desc {
  color: var(--mute);
  font-size: 15px;
  line-height: 1.7;
}

.page-about .about-team__note {
  margin: 22px 0 0;
  padding: 16px 18px;
  border-left: 3px solid var(--neon);
  background-color: var(--ink-800);
  color: var(--paper);
  font-size: 16px;
}

/* ---------- 流程 ---------- */
.page-about .about-flow {
  list-style: none;
  margin: 0 0 clamp(28px, 5vw, 52px);
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.page-about .about-flow__step {
  position: relative;
  padding: 24px 18px 24px 0;
  border-top: 1.5px solid var(--line);
  transition: background-color 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

.page-about .about-flow__step:last-child {
  border-bottom: 1.5px solid var(--line);
}

.page-about .about-flow__step:hover {
  background-color: var(--ink-800);
  box-shadow: inset 0 0 0 1.5px var(--neon);
}

.page-about .about-flow__mark {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--score);
  margin-bottom: 10px;
}

.page-about .about-flow__time {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(28px, 4.6vw, 40px);
  line-height: 1;
  color: var(--neon);
  letter-spacing: -0.02em;
}

.page-about .about-flow__title {
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 700;
  margin: 12px 0 8px;
  letter-spacing: -0.01em;
}

.page-about .about-flow__text {
  margin: 0;
  color: var(--mute);
  font-size: 16px;
  max-width: 40ch;
}

.page-about .about-flow__asideTitle {
  font-family: var(--font-editorial);
  font-size: clamp(19px, 2.4vw, 23px);
  font-weight: 700;
  margin: 0 0 14px;
  line-height: 1.4;
}

.page-about .about-flow__aside p {
  margin: 0 0 16px;
  color: var(--mute);
  font-size: 16px;
}

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

/* ---------- 协作 ---------- */
.page-about .about-partners {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 2.5vw, 24px);
}

.page-about .about-partner {
  padding: 24px 22px;
  border: 1.5px solid var(--line);
  background-color: var(--ink-800);
  transition: border-color 0.18s var(--ease), transform 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

.page-about .about-partner:hover {
  border-color: var(--neon);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lift);
}

.page-about .about-partner__num {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(36px, 6vw, 56px);
  line-height: 1;
  color: var(--paper);
  letter-spacing: -0.02em;
}

.page-about .about-partner__title {
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 700;
  margin: 14px 0 10px;
  letter-spacing: -0.01em;
}

.page-about .about-partner__text {
  margin: 0;
  color: var(--mute);
  font-size: 16px;
  max-width: 46ch;
}

.page-about .about-partner__note {
  margin: 24px 0 0;
  max-width: 68ch;
  color: var(--mute);
  font-size: 16px;
}

/* ---------- 时间线 ---------- */
.page-about .about-section--timeline {
  background-image:
    radial-gradient(90% 60% at 50% 100%, rgba(61, 245, 176, 0.08), transparent 70%);
}

.page-about .about-axis {
  display: none;
}

.page-about .about-timeline {
  border-top: 1.5px solid var(--line);
}

.page-about .about-epoch {
  border-bottom: 1.5px solid var(--line);
}

.page-about .about-epoch > summary {
  display: grid;
  grid-template-columns: clamp(62px, 15vw, 108px) minmax(0, 1fr) auto;
  gap: 10px 16px;
  align-items: center;
  min-height: 44px;
  padding: 18px 4px;
  cursor: pointer;
  list-style: none;
  transition: background-color 0.18s var(--ease);
}

.page-about .about-epoch > summary::-webkit-details-marker {
  display: none;
}

.page-about .about-epoch > summary:hover {
  background-color: var(--ink-800);
}

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

.page-about .about-epoch__year {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(22px, 3.4vw, 32px);
  line-height: 1;
  color: var(--mute);
  letter-spacing: -0.02em;
}

.page-about .about-epoch[open] .about-epoch__year {
  color: var(--neon);
}

.page-about .about-epoch__title {
  font-family: var(--font-display);
  font-size: clamp(18px, 2.6vw, 23px);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.3;
}

.page-about .about-epoch__toggle {
  position: relative;
  justify-self: end;
  width: 26px;
  height: 26px;
  border: 1.5px solid var(--line);
  flex: none;
}

.page-about .about-epoch__toggle::before,
.page-about .about-epoch__toggle::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background-color: var(--neon);
}

.page-about .about-epoch__toggle::before {
  width: 12px;
  height: 1.5px;
  transform: translate(-50%, -50%);
}

.page-about .about-epoch__toggle::after {
  width: 1.5px;
  height: 12px;
  transform: translate(-50%, -50%);
  transition: transform 0.18s var(--ease), opacity 0.18s var(--ease);
}

.page-about .about-epoch[open] .about-epoch__toggle::after {
  transform: translate(-50%, -50%) scaleY(0);
  opacity: 0;
}

.page-about .about-epoch__body {
  padding: 0 4px 22px;
}

.page-about .about-epoch__body p {
  margin: 0;
  max-width: 62ch;
  color: var(--mute);
  font-size: 16px;
}

/* ---------- 读者数据 ---------- */
.page-about .about-readers {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 44px);
}

.page-about .about-readers__num {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(46px, 10vw, 76px);
  line-height: 1;
  color: var(--paper);
  letter-spacing: -0.03em;
}

.page-about .about-readers__cap {
  display: block;
  margin-top: 12px;
  max-width: 30ch;
  color: var(--mute);
  font-size: 15px;
}

.page-about .about-bars {
  display: grid;
  gap: 16px;
}

.page-about .about-bar {
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr) 46px;
  align-items: center;
  gap: 12px;
}

.page-about .about-bar__label {
  font-size: 14px;
  color: var(--paper);
}

.page-about .about-bar__track {
  display: block;
  height: 12px;
  border: 1.5px solid var(--line);
  background-color: var(--ink-800);
  overflow: hidden;
}

.page-about .about-bar__fill {
  display: block;
  height: 100%;
  background-image: linear-gradient(90deg, var(--neon) 0%, var(--neon-soft) 100%);
}

.page-about .about-bar__fill--a {
  width: 54%;
}

.page-about .about-bar__fill--b {
  width: 31%;
}

.page-about .about-bar__fill--c {
  width: 15%;
}

.page-about .about-bar__val {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 15px;
  color: var(--neon-soft);
  text-align: right;
}

.page-about .about-readers__facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 0;
  border-top: 1.5px solid var(--line);
}

.page-about .about-fact {
  padding: 18px 0;
  border-bottom: 1.5px solid var(--line);
}

.page-about .about-fact__num {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(26px, 4vw, 36px);
  line-height: 1;
  color: var(--score);
}

.page-about .about-fact__cap {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  color: var(--mute);
}

/* ---------- 细节 ---------- */
.page-about .about-craft {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1.5px solid var(--line);
}

.page-about .about-craft__item {
  padding: 22px 18px 22px 0;
  border-bottom: 1.5px solid var(--line);
  border-left: 3px solid transparent;
  padding-left: 16px;
  transition: border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.page-about .about-craft__item:hover {
  border-left-color: var(--neon);
  background-color: var(--ink-800);
}

.page-about .about-craft__title {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}

.page-about .about-craft__text {
  margin: 0;
  color: var(--mute);
  font-size: 16px;
  max-width: 54ch;
}

/* ---------- 收尾入口 ---------- */
.page-about .about-next {
  padding-block: clamp(40px, 6vw, 76px);
  background-image:
    radial-gradient(80% 120% at 12% 0%, rgba(255, 90, 43, 0.1), transparent 62%);
}

.page-about .about-next__head {
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-about .about-next__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about .about-next__card {
  display: block;
  padding: 22px 20px;
  border: 1.5px solid var(--line);
  background-color: var(--ink-800);
  color: var(--paper);
  text-decoration: none;
  transition: border-color 0.18s var(--ease), transform 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

.page-about .about-next__card:hover,
.page-about .about-next__card:focus-visible {
  border-color: var(--neon);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lift);
}

.page-about .about-next__card:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 2px;
}

.page-about .about-next__kicker {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--neon);
  margin-bottom: 10px;
}

.page-about .about-next__title {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(18px, 2.4vw, 22px);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.01em;
}

/* ---------- 断点 ---------- */
@media (min-width: 620px) {
  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-stat {
    border-bottom: 0;
  }

  .page-about .about-stat:nth-child(2n) {
    border-right: 1.5px solid var(--line);
  }

  .page-about .about-stat:last-child {
    border-right: 0;
  }

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

  .page-about .about-flow__step {
    border-top: 1.5px solid var(--line);
    border-bottom: 0;
    padding: 24px 20px 24px 0;
  }

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

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

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

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

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(32px, 5vw, 72px);
  }

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

  .page-about .about-stat {
    border-bottom: 1.5px solid var(--line);
    border-right: 1.5px solid var(--line);
  }

  .page-about .about-stat:nth-child(2n) {
    border-right: 0;
  }

  .page-about .about-stat:nth-last-child(-n + 2) {
    border-bottom: 0;
  }

  .page-about .about-split {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(32px, 5vw, 64px);
  }

  .page-about .about-split--media {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-about .about-roster > li {
    grid-template-columns: clamp(72px, 7vw, 96px) minmax(0, 1fr);
  }

  .page-about .about-axis {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 30px;
    margin-bottom: 4px;
    background-image: linear-gradient(var(--line), var(--line));
    background-repeat: no-repeat;
    background-position: center;
    background-size: 100% 1.5px;
  }

  .page-about .about-axis__dot {
    width: 10px;
    height: 10px;
    border: 1.5px solid var(--neon);
    background-color: var(--ink-900);
    transform: rotate(45deg);
  }

  .page-about .about-axis__dot--now {
    border-color: var(--score);
    background-color: var(--score);
  }

  .page-about .about-readers {
    grid-template-columns: minmax(0, 4fr) minmax(0, 5fr) minmax(0, 3fr);
    align-items: start;
  }

  .page-about .about-readers__facts {
    grid-template-columns: 1fr;
    border-top: 0;
  }

  .page-about .about-fact {
    padding: 0 0 16px;
    border-bottom: 1.5px solid var(--line);
  }

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

  .page-about .about-craft {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    border-bottom: 1.5px solid var(--line);
  }

  .page-about .about-craft__item {
    border-bottom: 0;
    border-right: 1.5px solid var(--line);
  }

  .page-about .about-craft__item:last-child {
    border-right: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-scene,
  .page-about .about-partner,
  .page-about .about-next__card,
  .page-about .about-flow__step,
  .page-about .about-craft__item {
    transition: none;
  }

  .page-about .about-scene:hover,
  .page-about .about-partner:hover,
  .page-about .about-next__card:hover {
    transform: none;
  }
}