.page-about {
  background: var(--ink);
  color: var(--read);
  padding-bottom: 72px;
  overflow-x: hidden;
}

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

/* ---------- 面包屑 ---------- */
.page-about .about-crumbs {
  padding-top: 22px;
}

.page-about .crumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mute);
}

.page-about .crumbs li + li::before {
  content: "/";
  margin-right: 10px;
  color: var(--raise);
}

.page-about .crumbs a {
  color: var(--silver);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .crumbs a:hover,
.page-about .crumbs a:focus-visible {
  color: var(--blue-lt);
  border-bottom-color: var(--blue-lt);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: 28px 0 48px;
}

.page-about .hero-grid {
  display: grid;
  gap: 36px;
  align-items: start;
}

.page-about .hero-tag {
  display: inline-block;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--gold);
  background: var(--panel);
  border: 1px solid var(--raise);
  border-left: 2px solid var(--gold);
  padding: 6px 12px;
  margin-bottom: 20px;
}

.page-about .about-hero h1 {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(30px, 6.4vw, 58px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--read);
  max-width: 15em;
}

.page-about .hero-lede {
  margin: 0 0 28px;
  max-width: 620px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--silver);
}

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

.page-about .hero-figure {
  margin: 0;
}

.page-about .hero-figure .figure-frame {
  background: var(--panel);
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 64px), calc(100% - 64px) 100%, 0 100%);
}

.page-about .hero-figure img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
}

.page-about .hero-figure .figure-cap {
  margin-top: 12px;
}

/* ---------- 章节通用 ---------- */
.page-about .about-section {
  padding: 52px 0 44px;
}

.page-about .section-head {
  padding-bottom: 22px;
  border-bottom: 1px solid var(--raise);
  margin-bottom: 32px;
}

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

.page-about .about-copy {
  max-width: 680px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--silver);
}

.page-about .about-copy p {
  margin: 0 0 18px;
}

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

.page-about .figure-cap {
  display: block;
  margin: 12px 0 0;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mute);
}

/* ---------- 引用块 ---------- */
.page-about .claim {
  margin: 8px 0 0;
  padding: 6px 0 6px 22px;
  border-left: 2px solid var(--gold);
  max-width: 560px;
}

.page-about .claim-text {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(20px, 3.4vw, 28px);
  line-height: 1.42;
  letter-spacing: -0.01em;
  color: var(--read);
}

.page-about .claim-src {
  display: block;
  font-family: var(--font-data);
  font-size: 12px;
  font-style: normal;
  letter-spacing: 0.1em;
  color: var(--mute);
}

/* ---------- 时间轴 ---------- */
.page-about .timeline {
  position: relative;
  margin: 0;
  padding: 0 0 0 30px;
  list-style: none;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 10px;
  bottom: 18px;
  width: 1px;
  background: linear-gradient(180deg, var(--gold), var(--raise) 34%, var(--raise));
}

.page-about .tl-node {
  position: relative;
  padding-bottom: 34px;
}

.page-about .tl-node:last-child {
  padding-bottom: 0;
}

.page-about .tl-node::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 8px;
  width: 9px;
  height: 9px;
  background: var(--ink);
  border: 1px solid var(--mute);
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .tl-node:hover::before {
  background: var(--gold);
  border-color: var(--gold);
}

.page-about .tl-year {
  display: block;
  font-family: var(--font-data);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--gold);
  margin-bottom: 8px;
}

.page-about .tl-title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--read);
  transition: color var(--dur) var(--ease);
}

.page-about .tl-node:hover .tl-title {
  color: var(--blue-lt);
}

.page-about .tl-text {
  margin: 0;
  max-width: 620px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--silver);
}

.page-about .tl-meta {
  display: inline-block;
  margin-top: 10px;
  padding: 3px 9px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--blue-lt);
  background: var(--panel);
  border: 1px solid var(--raise);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .tl-node:hover .tl-meta {
  color: var(--gold);
  border-color: var(--gold);
}

/* ---------- 满宽图带 ---------- */
.page-about .figure-band {
  margin: 16px 0 0;
}

.page-about .figure-band .figure-frame {
  background: var(--panel);
  border: 1px solid var(--raise);
  overflow: hidden;
  clip-path: polygon(56px 0, 100% 0, 100% 100%, 0 100%);
}

.page-about .figure-band img {
  width: 100%;
  aspect-ratio: 8 / 3;
  object-fit: cover;
}

/* ---------- 房间与赛季双栏 ---------- */
.page-about .split {
  display: grid;
  gap: 32px;
}

.page-about .design-panel {
  background: var(--panel);
  border: 1px solid var(--raise);
  border-top: 2px solid var(--red);
  padding: 24px 22px 26px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 32px), calc(100% - 32px) 100%, 0 100%);
}

.page-about .design-k {
  margin: 0 0 4px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--mute);
}

.page-about .design-v {
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--read);
}

.page-about .design-v:last-child {
  margin-bottom: 0;
}

/* ---------- 团队 ---------- */
.page-about .figure-inline {
  margin: 0 0 32px;
  max-width: 720px;
}

.page-about .figure-inline .figure-frame {
  background: var(--panel);
  border: 1px solid var(--raise);
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 40px), calc(100% - 40px) 100%, 0 100%);
}

.page-about .figure-inline img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-about .crew-grid {
  display: grid;
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .crew-card {
  position: relative;
  background: linear-gradient(158deg, var(--panel) 0%, var(--ink) 78%);
  border: 1px solid var(--raise);
  border-top: 2px solid var(--blue);
  padding: 42px 20px 24px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%);
}

.page-about .crew-grid > .crew-card:nth-child(1) { border-top-color: var(--red); }
.page-about .crew-grid > .crew-card:nth-child(2) { border-top-color: var(--blue); }
.page-about .crew-grid > .crew-card:nth-child(3) { border-top-color: var(--green); }
.page-about .crew-grid > .crew-card:nth-child(4) { border-top-color: var(--gold); }

.page-about .crew-idx {
  position: absolute;
  top: 14px;
  left: 20px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--mute);
}

.page-about .crew-title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--read);
}

.page-about .crew-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--silver);
}

/* ---------- 规模数据 ---------- */
.page-about .data-strip {
  display: grid;
  gap: 16px;
  margin-top: 34px;
}

.page-about .data-cell {
  background: var(--panel);
  border: 1px solid var(--raise);
  padding: 22px 20px 20px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
}

.page-about .data-cell:nth-child(1) { border-left: 2px solid var(--blue); }
.page-about .data-cell:nth-child(2) { border-left: 2px solid var(--green); }
.page-about .data-cell:nth-child(3) { border-left: 2px solid var(--gold); }

.page-about .data-num {
  display: block;
  font-family: var(--font-data);
  font-size: 40px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
  color: var(--read);
}

.page-about .data-unit {
  margin-left: 4px;
  font-size: 15px;
  font-weight: 400;
  color: var(--silver);
}

.page-about .data-key {
  display: block;
  margin-top: 14px;
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--silver);
}

/* ---------- 三条主张 ---------- */
.page-about .pledge-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .pledge {
  display: grid;
  gap: 12px;
  padding: 24px 0;
  border-top: 1px solid var(--raise);
}

.page-about .pledge:last-child {
  border-bottom: 1px solid var(--raise);
}

.page-about .pledge-idx {
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-about .pledge-title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--read);
}

.page-about .pledge-text {
  margin: 0;
  max-width: 640px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--silver);
}

/* ---------- 收束 ---------- */
.page-about .about-outro {
  margin-top: 20px;
  border-top: 1px solid var(--raise);
  background: linear-gradient(180deg, var(--panel) 0%, var(--ink) 100%);
  padding: 44px 0 48px;
}

.page-about .outro-grid {
  display: grid;
  gap: 24px;
  align-items: center;
}

.page-about .outro-text {
  margin: 0;
  max-width: 560px;
  font-size: 17px;
  line-height: 1.75;
  color: var(--read);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .data-strip {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-about .tl-node {
    display: grid;
    grid-template-columns: 88px minmax(0, 1fr);
    gap: 20px;
    align-items: start;
  }

  .page-about .tl-year {
    margin-bottom: 0;
    padding-top: 2px;
  }
}

@media (min-width: 900px) {
  .page-about {
    padding-bottom: 96px;
  }

  .page-about .about-hero {
    padding: 44px 0 64px;
  }

  .page-about .hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 64px;
  }

  .page-about .about-section {
    padding: 68px 0 56px;
  }

  .page-about .split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 56px;
  }

  .page-about .timeline {
    padding-left: 40px;
  }

  .page-about .timeline::before {
    left: 5px;
  }

  .page-about .tl-node::before {
    left: -40px;
  }

  .page-about .tl-node {
    grid-template-columns: 108px minmax(0, 1fr);
    gap: 28px;
    padding-bottom: 44px;
  }

  .page-about .outro-grid {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 40px;
  }

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

@media (min-width: 1080px) {
  .page-about .crew-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    align-items: start;
  }

  .page-about .crew-grid > .crew-card:nth-child(even) {
    margin-top: 32px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .crumbs a,
  .page-about .tl-node::before,
  .page-about .tl-title,
  .page-about .tl-meta {
    transition: none;
  }
}