.page-about {
  --about-dim: rgba(242, 237, 226, 0.72);
  --about-line: rgba(242, 237, 226, 0.14);
  --about-line-soft: rgba(242, 237, 226, 0.07);
}

.page-about .about-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(36px, 6vw, 80px) 0 clamp(40px, 6vw, 72px);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: -30% -10% auto -10%;
  height: 130%;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(ellipse at 26% 0%, rgba(201, 162, 39, 0.20), transparent 62%),
    radial-gradient(ellipse at 84% 12%, rgba(124, 224, 74, 0.10), transparent 56%);
}

.page-about .about-hero__inner {
  display: grid;
  gap: 16px;
  max-width: 920px;
}

.page-about .about-hero__index {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-gold);
}

.page-about h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(29px, 5vw, 54px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--c-cream);
}

.page-about .about-hero__lead {
  margin: 0;
  max-width: 38em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--about-dim);
}

.page-about .about-figures {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--about-line);
  border: 1px solid var(--about-line);
}

.page-about .about-figures li {
  display: grid;
  gap: 6px;
  padding: 16px 16px 18px;
  background: var(--c-night);
}

.page-about .about-figures__num {
  font-size: 20px;
  line-height: 1.1;
  color: var(--c-gold-hi);
  font-weight: 700;
}

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

@media (min-width: 720px) {
  .page-about .about-hero__lead {
    font-size: 17px;
  }

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

.page-about .about-block {
  padding: clamp(44px, 7vw, 92px) 0;
}

.page-about .section-head {
  margin-bottom: clamp(26px, 4vw, 44px);
}

.page-about .section-head__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 3vw, 34px);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--c-cream);
}

.page-about .section-head__desc {
  margin: 0;
  max-width: 38em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--about-dim);
}

.page-about .index-num {
  color: var(--c-gold);
  font-size: 12px;
  letter-spacing: 0.18em;
}

/* 时间线 */
.page-about .about-timeline__grid {
  display: grid;
  gap: 26px;
}

.page-about .about-timeline__texture {
  display: block;
  width: 100%;
  height: 118px;
  object-fit: cover;
  opacity: 0.24;
  border: 1px solid var(--about-line);
  filter: saturate(0.85);
}

.page-about .tl {
  list-style: none;
  margin: 0;
  padding: 0 0 0 22px;
  border-left: 1px solid rgba(110, 115, 112, 0.5);
}

.page-about .tl__item {
  position: relative;
}

.page-about .tl__item::before {
  content: "";
  position: absolute;
  left: -27px;
  top: 24px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--c-gold);
  box-shadow: 0 0 0 4px rgba(201, 162, 39, 0.16);
}

.page-about .tl__entry {
  border-bottom: 1px solid var(--about-line-soft);
}

.page-about .tl__sum {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
}

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

.page-about .tl__sum::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--c-gold);
}

.page-about .tl__entry[open] .tl__sum::after {
  content: "−";
  color: var(--c-gold-hi);
}

.page-about .tl__entry[open] .tl__sum {
  border-bottom: 1px solid var(--glass-line);
}

.page-about .tl__sum:focus-visible {
  outline: 2px solid var(--c-gold);
  outline-offset: 3px;
}

.page-about .tl__season {
  flex: 0 0 auto;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--c-gold);
  border: 1px solid var(--glass-line);
  padding: 2px 7px;
  white-space: nowrap;
}

.page-about .tl__title {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--c-cream);
}

.page-about .tl__body {
  padding: 12px 8px 18px 0;
}

.page-about .tl__body p {
  margin: 0;
  max-width: 38em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--about-dim);
}

@media (min-width: 1000px) {
  .page-about .about-timeline__grid {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 52px;
    align-items: start;
  }

  .page-about .about-timeline__texture {
    position: sticky;
    top: 100px;
    height: auto;
    aspect-ratio: 1 / 1;
  }

  .page-about .tl {
    padding-left: 26px;
  }

  .page-about .tl__item::before {
    left: -31px;
    top: 26px;
  }

  .page-about .tl__sum {
    padding: 18px 0;
  }

  .page-about .tl__title {
    font-size: 17px;
  }
}

/* 团队 */
.page-about .about-figure {
  margin: 0 0 clamp(24px, 4vw, 36px);
  position: relative;
  border: 1px solid var(--about-line);
  overflow: hidden;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 8;
  object-fit: cover;
  filter: saturate(0.9) brightness(0.9);
}

.page-about .about-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(160deg, rgba(7, 17, 15, 0.15) 20%, rgba(7, 17, 15, 0.78) 100%);
}

.page-about .about-figure__cap {
  position: absolute;
  left: 14px;
  bottom: 12px;
  z-index: 1;
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--c-cream);
  background: rgba(14, 42, 34, 0.86);
  border: 1px solid var(--glass-line);
  padding: 5px 10px;
}

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

.page-about .crew-card {
  display: grid;
  gap: 9px;
  align-content: start;
  padding: 22px 20px 24px;
  background: var(--c-panel);
  border: 1px solid var(--about-line);
  transition: transform 0.24s var(--ease), border-color 0.24s var(--ease);
}

.page-about .crew-card:hover {
  transform: translateY(-4px);
  border-color: var(--glass-line);
}

.page-about .crew-card--focus {
  background: var(--c-moss);
  border-color: var(--glass-line);
}

.page-about .crew-card__label {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-gold);
}

.page-about .crew-card--focus .crew-card__label {
  color: var(--c-gold-hi);
}

.page-about .crew-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 19px;
  line-height: 1.35;
  color: var(--c-cream);
}

.page-about .crew-card__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--about-dim);
}

@media (min-width: 900px) {
  .page-about .about-crew {
    grid-template-columns: 0.95fr 1.15fr 0.95fr;
    gap: 16px;
    align-items: stretch;
  }

  .page-about .crew-card--focus {
    transform: translateY(-10px);
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
  }

  .page-about .crew-card--focus:hover {
    transform: translateY(-14px);
  }
}

/* 覆盖范围 */
.page-about .about-coverage {
  background:
    repeating-linear-gradient(112deg, rgba(124, 224, 74, 0.05) 0 2px, transparent 2px 15px),
    var(--c-panel);
  border-top: 1px solid var(--about-line);
  border-bottom: 1px solid var(--about-line);
}

.page-about .league-tags {
  list-style: none;
  margin: 0 0 26px;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .about-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  padding: 6px 11px;
  color: var(--c-cream);
  background: rgba(7, 17, 15, 0.5);
  border: 1px solid var(--about-line);
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-about .about-tag:hover {
  border-color: var(--c-gold);
  color: var(--c-gold-hi);
}

.page-about .about-tag--gold {
  color: var(--c-gold);
  border-color: var(--glass-line);
  background: rgba(36, 66, 47, 0.55);
}

.page-about .about-coverage__note {
  margin: 0 0 6px;
  font-size: 14px;
  letter-spacing: 0.02em;
  color: var(--c-cream);
}

.page-about .struct-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .struct-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 16px 0 18px;
  border-top: 1px solid var(--about-line);
}

.page-about .struct-row:last-child {
  border-bottom: 1px solid var(--about-line);
}

.page-about .struct-row__num {
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--c-gold);
}

.page-about .struct-row__title {
  margin: 0 0 4px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--c-cream);
}

.page-about .struct-row__text {
  margin: 0;
  max-width: 38em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--about-dim);
}

@media (min-width: 720px) {
  .page-about .struct-row {
    grid-template-columns: 84px minmax(0, 1fr);
    gap: 18px;
    align-items: baseline;
    padding: 18px 0 20px;
  }

  .page-about .about-tag {
    font-size: 12px;
    padding: 7px 13px;
  }
}

/* 共建 */
.page-about .about-partners__inner {
  display: grid;
  gap: 30px;
}

.page-about .about-partners__lead {
  margin: 0 0 20px;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--about-dim);
}

.page-about .about-tags {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .about-partners__figure {
  margin: 0;
  border: 1px solid var(--glass-line);
  background: var(--c-panel);
  overflow: hidden;
}

.page-about .about-partners__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  filter: saturate(0.92) brightness(0.92);
}

@media (min-width: 900px) {
  .page-about .about-partners__inner {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.85fr);
    gap: 48px;
    align-items: center;
  }

  .page-about .about-partners__figure img {
    aspect-ratio: 4 / 3.4;
  }
}

/* 收尾 */
.page-about .about-cta-block {
  padding-top: clamp(32px, 5vw, 60px);
}

.page-about .about-cta {
  display: grid;
  gap: 18px;
  padding: clamp(22px, 4vw, 34px);
  background:
    linear-gradient(135deg, rgba(14, 42, 34, 0.96), rgba(36, 66, 47, 0.82));
  border: 1px solid var(--glass-line);
}

.page-about .about-cta__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(20px, 2.6vw, 26px);
  line-height: 1.3;
  color: var(--c-cream);
}

.page-about .about-cta__text {
  margin: 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.75;
  color: var(--about-dim);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

@media (min-width: 760px) {
  .page-about .about-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 28px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .crew-card,
  .page-about .crew-card--focus,
  .page-about .about-tag {
    transition: none;
  }

  .page-about .crew-card:hover,
  .page-about .crew-card--focus,
  .page-about .crew-card--focus:hover {
    transform: none;
  }
}