.page-about {
  display: block;
  background: var(--kt-ink);
  color: var(--kt-text);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: 22px 0 56px;
  overflow: hidden;
  border-bottom: 1px solid var(--kt-grid-line);
  background-image:
    linear-gradient(to right, var(--kt-grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--kt-grid-line) 1px, transparent 1px);
  background-size: 76px 76px;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(80% 68% at 78% 0%, rgba(200, 255, 63, 0.1), transparent 62%),
    linear-gradient(to bottom, rgba(6, 16, 12, 0.35), var(--kt-ink) 94%);
  pointer-events: none;
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 30px;
  grid-template-areas:
    "crumb"
    "copy"
    "media";
}

.page-about .about-hero__crumb { grid-area: crumb; }
.page-about .about-hero__copy { grid-area: copy; }
.page-about .about-hero__media { grid-area: media; }

.page-about .about-hero__title {
  margin: 14px 0 18px;
  font-family: var(--kt-font-display);
  font-size: clamp(32px, 8vw, 66px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.02em;
}

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

.page-about .about-hero__lead {
  max-width: 60ch;
  margin: 0;
  color: var(--kt-muted);
  font-size: 16px;
  line-height: 1.9;
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  background: var(--kt-grid-line);
  border: 1px solid var(--kt-grid-line);
}

.page-about .about-hero__fact {
  display: flex;
  flex-direction: column;
  gap: 7px;
  padding: 14px 16px;
  background: var(--kt-surface);
}

.page-about .about-hero__fact b {
  font-family: var(--kt-font-mono);
  font-size: 24px;
  font-weight: 700;
  line-height: 1;
  color: var(--kt-lime);
  font-variant-numeric: tabular-nums;
}

.page-about .about-hero__fact span {
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--kt-muted);
}

.page-about .about-hero__media {
  margin: 0;
  border: 2px solid var(--kt-edge);
  box-shadow: var(--kt-shadow);
  background: var(--kt-surface);
}

.page-about .about-hero__media .kt-media__frame {
  margin: 0;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

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

.page-about .about-hero__media .kt-media__cap {
  padding: 10px 14px;
  border-top: 1px solid var(--kt-grid-line);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--kt-muted);
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline {
  padding-top: 60px;
  padding-bottom: 12px;
}

.page-about .about-timeline__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 14px 40px;
  margin-bottom: 34px;
}

.page-about .about-timeline__title {
  margin: 10px 0 0;
  font-size: clamp(26px, 4.6vw, 42px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.page-about .about-timeline__note {
  max-width: 42ch;
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--kt-muted);
}

.page-about .about-timeline__layout {
  display: grid;
  gap: 30px;
}

.page-about .about-index__label { margin: 0 0 12px; }

.page-about .about-index__list {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  margin: 0;
  padding: 0 0 8px;
  list-style: none;
}

.page-about .about-index__item { margin: 0; flex: none; }

.page-about .about-index__link {
  display: flex;
  gap: 8px;
  align-items: baseline;
  padding: 7px 12px;
  border: 1px solid var(--kt-grid-line);
  background: var(--kt-surface);
  color: var(--kt-muted);
  font-size: 13px;
  line-height: 1.5;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--kt-fast) var(--kt-ease), border-color var(--kt-fast) var(--kt-ease);
}

.page-about .about-index__link:hover {
  color: var(--kt-text);
  border-color: var(--kt-edge);
}

.page-about .about-index__link:focus-visible {
  outline: 2px solid var(--kt-lime);
  outline-offset: 2px;
  color: var(--kt-lime);
}

.page-about .about-index__num {
  font-family: var(--kt-font-mono);
  font-size: 11.5px;
  color: var(--kt-lime-2);
  opacity: 0.75;
}

.page-about .about-timeline__track {
  position: relative;
  padding-left: 26px;
  border-left: 2px solid var(--kt-edge);
}

.page-about .about-era {
  position: relative;
  padding-bottom: 40px;
}

.page-about .about-era:last-of-type { padding-bottom: 24px; }

.page-about .about-era::before {
  content: "";
  position: absolute;
  top: 14px;
  left: -35px;
  width: 12px;
  height: 12px;
  background: var(--kt-ink);
  border: 2px solid var(--kt-edge);
  transition: border-color var(--kt-fast) var(--kt-ease), background-color var(--kt-fast) var(--kt-ease);
}

.page-about .about-era:hover::before {
  border-color: var(--kt-lime);
  background: var(--kt-lime-2);
}

.page-about .about-era__year {
  display: block;
  font-family: var(--kt-font-mono);
  font-size: clamp(34px, 6.4vw, 58px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--kt-text);
  font-variant-numeric: tabular-nums;
}

.page-about .about-era__tag {
  display: inline-block;
  margin-top: 10px;
  font-family: var(--kt-font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--kt-orange);
}

.page-about .about-era__title {
  margin: 10px 0 8px;
  font-size: clamp(18px, 2.6vw, 22px);
  font-weight: 800;
  line-height: 1.35;
}

.page-about .about-era__body {
  max-width: 62ch;
  margin: 0;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--kt-muted);
}

.page-about .about-timeline__end {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 20px;
  padding-top: 22px;
  border-top: 1px solid var(--kt-grid-line);
}

.page-about .about-timeline__end p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--kt-muted);
}

/* ---------- 版本节点 ---------- */
.page-about .about-miles { padding-top: 60px; }

.page-about .about-miles__head {
  display: grid;
  gap: 14px;
  margin-bottom: 30px;
}

.page-about .about-miles__title {
  margin: 10px 0 0;
  font-size: clamp(25px, 4.4vw, 40px);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -0.01em;
}

.page-about .about-miles__note {
  max-width: 46ch;
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--kt-muted);
}

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

.page-about .about-mile {
  border: 2px solid var(--kt-edge);
  background: var(--kt-surface);
  box-shadow: var(--kt-shadow-sm);
  transition: border-color var(--kt-fast) var(--kt-ease);
}

.page-about .about-mile + .about-mile { margin-top: 14px; }

.page-about .about-mile[open] { border-color: var(--kt-edge); }

.page-about .about-mile__sum {
  display: flex;
  gap: 14px;
  align-items: baseline;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
}

.page-about .about-mile__sum::-webkit-details-marker { display: none; }

.page-about .about-mile__sum:hover .about-mile__h { color: var(--kt-lime); }

.page-about .about-mile__sum:focus-visible {
  outline: 2px solid var(--kt-lime);
  outline-offset: -2px;
}

.page-about .about-mile__k {
  flex: none;
  font-family: var(--kt-font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--kt-lime);
  font-variant-numeric: tabular-nums;
}

.page-about .about-mile__h {
  flex: 1 1 auto;
  font-size: 15.5px;
  font-weight: 800;
  line-height: 1.45;
  transition: color var(--kt-fast) var(--kt-ease);
}

.page-about .about-mile__i {
  flex: none;
  width: 10px;
  height: 10px;
  margin-top: 2px;
  border-right: 2px solid var(--kt-muted);
  border-bottom: 2px solid var(--kt-muted);
  transform: rotate(45deg);
  transition: transform var(--kt-fast) var(--kt-ease), border-color var(--kt-fast) var(--kt-ease);
}

.page-about .about-mile[open] .about-mile__i {
  transform: rotate(-135deg);
  border-color: var(--kt-lime);
}

.page-about .about-mile__body {
  padding: 16px 18px 20px;
  border-top: 1px solid var(--kt-grid-line);
}

.page-about .about-mile__body p {
  margin: 0 0 12px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--kt-muted);
}

.page-about .about-mile__list {
  display: grid;
  gap: 9px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-mile__list li {
  position: relative;
  padding-left: 17px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--kt-text);
}

.page-about .about-mile__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 7px;
  height: 7px;
  background: var(--kt-lime-2);
}

.page-about .about-miles__media {
  margin: 0;
  border: 2px solid var(--kt-edge);
  box-shadow: var(--kt-shadow);
  background: var(--kt-surface);
}

.page-about .about-miles__media .kt-media__frame {
  margin: 0;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

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

.page-about .about-miles__media .kt-media__cap {
  padding: 10px 14px;
  border-top: 1px solid var(--kt-grid-line);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--kt-muted);
}

/* ---------- 内容生产 ---------- */
.page-about .about-team { padding-top: 60px; }

.page-about .about-team__grid {
  display: grid;
  gap: 28px;
}

.page-about .about-team__media {
  margin: 0;
  border: 2px solid var(--kt-edge);
  box-shadow: var(--kt-shadow);
  background: var(--kt-surface);
}

.page-about .about-team__media .kt-media__frame {
  margin: 0;
  aspect-ratio: 3 / 2;
  overflow: hidden;
}

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

.page-about .about-team__media .kt-media__cap {
  padding: 10px 14px;
  border-top: 1px solid var(--kt-grid-line);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--kt-muted);
}

.page-about .about-team__copy .about-hero__lead { margin-top: 18px; }

.page-about .about-team__split {
  display: grid;
  gap: 1px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  background: var(--kt-grid-line);
  border: 1px solid var(--kt-grid-line);
}

.page-about .about-team__split li {
  padding: 16px 18px;
  background: var(--kt-surface);
}

.page-about .about-team__split b {
  display: block;
  font-family: var(--kt-font-mono);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  color: var(--kt-lime);
  font-variant-numeric: tabular-nums;
}

.page-about .about-team__split strong {
  display: block;
  margin: 10px 0 6px;
  font-size: 14.5px;
  font-weight: 800;
}

.page-about .about-team__split p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--kt-muted);
}

/* ---------- 协作与覆盖 ---------- */
.page-about .about-network { padding-top: 60px; }

.page-about .about-band {
  display: flex;
  gap: 14px;
  overflow-x: auto;
  padding: 2px 0 20px;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-band:focus-visible {
  outline: 2px solid var(--kt-lime);
  outline-offset: 4px;
}

.page-about .about-band__card {
  flex: 0 0 auto;
  width: min(262px, 76vw);
  scroll-snap-align: start;
  padding: 18px 18px 20px;
  border: 2px solid var(--kt-edge);
  border-top: 3px solid var(--kt-lime-2);
  background: var(--kt-surface);
  box-shadow: var(--kt-shadow-sm);
}

.page-about .about-band__k {
  display: block;
  font-family: var(--kt-font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--kt-orange);
}

.page-about .about-band__t {
  margin: 9px 0 7px;
  font-size: 17px;
  font-weight: 800;
  line-height: 1.3;
}

.page-about .about-band__d {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--kt-muted);
}

/* ---------- 看台夜场 ---------- */
.page-about .about-visual { padding-top: 60px; }

.page-about .about-visual__grid {
  display: grid;
  gap: 14px;
}

.page-about .about-swatch {
  border: 2px solid var(--kt-edge);
  background: var(--kt-surface);
  box-shadow: var(--kt-shadow-sm);
}

.page-about .about-swatch__chip {
  display: flex;
  align-items: flex-end;
  justify-content: flex-end;
  height: 76px;
  padding: 8px 10px;
  border-bottom: 2px solid var(--kt-edge);
  font-family: var(--kt-font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
}

.page-about .about-swatch__chip--ink {
  background: #06100C;
  color: var(--kt-muted);
}

.page-about .about-swatch__chip--surface {
  background: #0C1B15;
  color: var(--kt-muted);
}

.page-about .about-swatch__chip--lime {
  background: #C8FF3F;
  color: #06100C;
}

.page-about .about-swatch__chip--orange {
  background: #FF8A3D;
  color: #06100C;
}

.page-about .about-swatch__body { padding: 14px 16px 18px; }

.page-about .about-swatch__t {
  margin: 0 0 8px;
  font-size: 15.5px;
  font-weight: 800;
}

.page-about .about-swatch__d {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--kt-muted);
}

.page-about .about-visual__foot {
  max-width: 72ch;
  margin: 26px 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--kt-grid-line);
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--kt-muted);
}

/* ---------- 收尾 ---------- */
.page-about .about-cta { padding-top: 60px; }

.page-about .about-cta__inner {
  display: grid;
  gap: 20px;
  padding: 30px 22px;
  border: 2px solid var(--kt-edge);
  background: linear-gradient(140deg, #0C1B15 0%, #10291B 100%);
  box-shadow: var(--kt-shadow);
}

.page-about .about-cta__title {
  margin: 10px 0 12px;
  font-size: clamp(24px, 4.2vw, 36px);
  font-weight: 800;
  line-height: 1.18;
}

.page-about .about-cta__lead {
  max-width: 54ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--kt-muted);
}

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

/* ---------- 断点 ---------- */
@media (min-width: 560px) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

@media (min-width: 900px) {
  .page-about .about-hero {
    padding-top: 26px;
    padding-bottom: 68px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    grid-template-areas:
      "crumb crumb"
      "copy media";
    align-items: end;
    column-gap: 48px;
    row-gap: 28px;
  }

  .page-about .about-miles__head {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: end;
    column-gap: 48px;
  }
}

@media (min-width: 960px) {
  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1fr);
    column-gap: 46px;
    align-items: start;
  }

  .page-about .about-team__media {
    grid-column: 1;
    grid-row: 1;
  }

  .page-about .about-team__copy {
    grid-column: 2;
    grid-row: 1;
  }
}

@media (min-width: 1000px) {
  .page-about .about-timeline__layout {
    grid-template-columns: 208px minmax(0, 1fr);
    column-gap: 56px;
  }

  .page-about .about-index {
    position: sticky;
    top: 96px;
    align-self: start;
  }

  .page-about .about-index__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding: 0;
    border-left: 1px solid var(--kt-grid-line);
  }

  .page-about .about-index__item { flex: initial; }

  .page-about .about-index__link {
    margin-left: -1px;
    padding: 9px 0 9px 14px;
    border: 0;
    border-left: 2px solid transparent;
    background: none;
  }

  .page-about .about-index__link:hover {
    border-left-color: var(--kt-lime-2);
    border-color: transparent transparent transparent var(--kt-lime-2);
  }

  .page-about .about-index__link:focus-visible {
    border-left-color: var(--kt-lime);
  }

  .page-about .about-miles__grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr);
    column-gap: 40px;
    align-items: start;
  }

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    column-gap: 44px;
    padding: 40px 36px;
  }

  .page-about .about-cta__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 1040px) {
  .page-about .about-visual__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-index__link,
  .page-about .about-mile,
  .page-about .about-mile__i,
  .page-about .about-mile__h,
  .page-about .about-era::before {
    transition: none;
  }
}