.page-about {
  --about-line: rgba(35, 24, 15, .22);
  --about-line-dark: rgba(242, 234, 217, .16);
  background: var(--ink);
  color: var(--cream);
}

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

/* ---------- 通用区块头 ---------- */
.page-about .band__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 14px 28px;
  padding-bottom: 16px;
  margin-bottom: clamp(28px, 4vw, 48px);
  border-bottom: 3px solid currentColor;
}

.page-about .band__head h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 3.6vw, 46px);
  line-height: 1.12;
  letter-spacing: -.01em;
  margin: 0;
  max-width: 22ch;
}

.page-about .band__head--oncream {
  color: var(--brown);
}

.page-about .band__head--oncream .label-index {
  color: rgba(35, 24, 15, .62);
}

.page-about .band__head--ondark {
  color: var(--cream);
}

.page-about .band__head--ondark .label-index {
  color: var(--mist);
}

/* ---------- 首屏 ---------- */
.page-about .about-lede {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  padding: clamp(24px, 4vw, 44px) 0 clamp(48px, 7vw, 92px);
}

.page-about .about-lede::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(90deg, rgba(75, 240, 176, .055) 0 1px, transparent 1px 44px);
  pointer-events: none;
}

.page-about .about-lede .breadcrumb {
  position: relative;
  z-index: 1;
}

.page-about .about-lede__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(28px, 5vw, 56px);
  align-items: end;
  margin-top: clamp(28px, 5vw, 56px);
}

.page-about .about-lede__text .label-index {
  color: var(--neon);
}

.page-about .about-lede h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(36px, 6.4vw, 76px);
  line-height: 1.02;
  letter-spacing: -.015em;
  margin: 14px 0 22px;
  max-width: 16ch;
}

.page-about .about-lede__intro {
  max-width: 48ch;
  margin: 0;
  color: var(--mist);
  font-size: clamp(16px, 1.5vw, 18px);
  line-height: 1.9;
}

.page-about .about-lede__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
}

.page-about .about-lede__tags .tag {
  border: 1px solid rgba(169, 255, 221, .45);
  color: var(--neon-mist);
  background: transparent;
  font-size: 13px;
  letter-spacing: .04em;
}

/* ---------- 图片容器 ---------- */
.page-about .about-figure {
  margin: 0;
  border: 3px solid var(--cream);
  background: var(--turf);
}

.page-about .about-figure--shadow {
  box-shadow: var(--hard-shadow);
}

.page-about .about-figure--dark {
  border-color: var(--neon);
  box-shadow: 8px 8px 0 rgba(75, 240, 176, .22);
}

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

.page-about .about-figure figcaption {
  padding: 12px 16px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--mist);
  border-top: 1px solid var(--about-line-dark);
  background: var(--ink-deep);
}

/* ---------- 档案速览带 ---------- */
.page-about .about-glance {
  background: var(--turf);
  border-top: 3px solid var(--cream);
  border-bottom: 3px solid var(--cream);
  padding: clamp(28px, 4vw, 46px) 0;
}

.page-about .about-glance__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px 20px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-glance__item {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-left: 14px;
  border-left: 2px solid rgba(75, 240, 176, .4);
}

.page-about .about-glance__num {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(28px, 3.4vw, 44px);
  line-height: 1;
  color: var(--neon);
}

.page-about .about-glance__unit {
  font-size: .45em;
  margin-left: 4px;
  color: var(--neon-mist);
}

.page-about .about-glance__label {
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--mist);
  line-height: 1.6;
}

/* ---------- 发展历程 ---------- */
.page-about .about-era {
  background: var(--cream);
  color: var(--brown);
  padding: clamp(56px, 8vw, 104px) 0;
}

.page-about .about-era__banner {
  margin: 0 0 clamp(32px, 5vw, 56px);
  border: 3px solid var(--brown);
  box-shadow: var(--hard-shadow);
  overflow: hidden;
}

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

.page-about .about-era__grid {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
}

.page-about .era-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 3px solid var(--brown);
}

.page-about .era-index__link {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: baseline;
  gap: 8px 14px;
  padding: 14px 6px;
  border-bottom: 1px dashed var(--about-line);
  color: var(--brown);
  text-decoration: none;
  transition: background .18s var(--ease), color .18s var(--ease);
}

.page-about .era-index__year {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 18px;
}

.page-about .era-index__name {
  font-size: 14px;
  letter-spacing: .12em;
  color: rgba(35, 24, 15, .58);
}

.page-about .era-index__num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: rgba(35, 24, 15, .58);
  text-align: right;
  white-space: nowrap;
}

.page-about .era-index__link:hover,
.page-about .era-index__link:focus-visible {
  background: var(--brown);
  color: var(--cream);
}

.page-about .era-index__link:hover .era-index__name,
.page-about .era-index__link:focus-visible .era-index__name {
  color: var(--cream-shade);
}

.page-about .era-index__link:hover .era-index__num,
.page-about .era-index__link:focus-visible .era-index__num {
  color: var(--neon);
}

.page-about .era-item {
  border: 2px solid var(--brown);
  box-shadow: var(--hard-shadow);
  background: #F7F1E4;
  padding: clamp(22px, 3vw, 36px);
  margin-bottom: 30px;
  scroll-margin-top: 110px;
}

.page-about .era-item:last-child {
  margin-bottom: 0;
}

.page-about .era-item__range {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .16em;
  color: var(--red);
  margin: 0 0 10px;
}

.page-about .era-item h3 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 2.4vw, 30px);
  line-height: 1.2;
  margin: 0 0 14px;
}

.page-about .era-item p {
  margin: 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.9;
}

.page-about .era-item__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 32px;
  list-style: none;
  margin: 22px 0 0;
  padding: 16px 0 0;
  border-top: 1px dashed var(--about-line);
}

.page-about .era-item__facts li {
  font-size: 12px;
  letter-spacing: .08em;
  color: rgba(35, 24, 15, .6);
}

.page-about .era-item__facts strong {
  display: block;
  margin-top: 4px;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 18px;
  letter-spacing: 0;
  color: var(--brown);
}

/* ---------- 流程 ---------- */
.page-about .about-flow {
  background: var(--ink-deep);
  color: var(--cream);
  padding: clamp(56px, 8vw, 104px) 0;
}

.page-about .about-flow__grid {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
  align-items: start;
}

.page-about .flow-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--about-line-dark);
}

.page-about .flow-step {
  position: relative;
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  gap: 16px;
  padding: 24px 12px 24px 20px;
  border-bottom: 1px solid var(--about-line-dark);
  transition: background .2s var(--ease);
}

.page-about .flow-step::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--neon);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform .22s var(--ease);
}

.page-about .flow-step:hover,
.page-about .flow-step:focus-within {
  background: rgba(75, 240, 176, .07);
}

.page-about .flow-step:hover::before,
.page-about .flow-step:focus-within::before {
  transform: scaleY(1);
}

.page-about .flow-step__no {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(28px, 3vw, 38px);
  line-height: 1;
  color: var(--neon);
}

.page-about .flow-step__body h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(19px, 2vw, 24px);
  margin: 0 0 10px;
  line-height: 1.25;
}

.page-about .flow-step__body p {
  margin: 0;
  max-width: 52ch;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--mist);
}

/* ---------- 团队与伙伴 ---------- */
.page-about .about-team {
  background: var(--cream);
  color: var(--brown);
  padding: clamp(56px, 8vw, 104px) 0;
}

.page-about .about-team__grid {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
}

.page-about .about-team__lead p {
  margin: 0 0 18px;
  max-width: 56ch;
  font-size: 16.5px;
  line-height: 1.9;
}

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

.page-about .duty-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .duty-item {
  border: 2px solid var(--brown);
  background: #F7F1E4;
  padding: 20px 22px;
  transition: transform .18s var(--ease), box-shadow .18s var(--ease);
}

.page-about .duty-item:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--hard-shadow);
}

.page-about .duty-item__no {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  padding: 3px 9px;
  border: 1px solid var(--brown);
  margin-bottom: 12px;
}

.page-about .duty-item h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 20px;
  margin: 0 0 8px;
}

.page-about .duty-item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(35, 24, 15, .78);
}

.page-about .partner-strip {
  margin-top: clamp(32px, 5vw, 56px);
  padding-top: 24px;
  border-top: 3px solid var(--brown);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 24px;
}

.page-about .partner-strip .label-index {
  color: rgba(35, 24, 15, .62);
}

.page-about .partner-strip__list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .partner-strip__list li {
  border: 2px solid var(--brown);
  padding: 6px 14px;
  font-size: 13px;
  letter-spacing: .06em;
}

.page-about .partner-strip__note {
  flex: 1 1 260px;
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(35, 24, 15, .72);
}

.page-about .partner-strip__note a,
.page-about .about-columns__note a,
.page-about .beyond-card__link {
  color: var(--red-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .partner-strip__note a:hover,
.page-about .partner-strip__note a:focus-visible,
.page-about .beyond-card__link:hover,
.page-about .beyond-card__link:focus-visible {
  color: var(--red);
}

/* ---------- 内容栏目 ---------- */
.page-about .about-columns {
  background: var(--ink);
  color: var(--cream);
  padding: clamp(56px, 8vw, 104px) 0;
}

.page-about .column-list {
  display: grid;
  gap: 0;
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--about-line-dark);
}

.page-about .column-item {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 4px 18px;
  padding: 24px 0;
  border-bottom: 1px solid var(--about-line-dark);
  transition: background .2s var(--ease);
}

.page-about .column-item:hover {
  background: rgba(75, 240, 176, .06);
}

.page-about .column-item__no {
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 20px;
  color: var(--amber);
  padding-top: 3px;
}

.page-about .column-item h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(19px, 2vw, 24px);
  line-height: 1.25;
}

.page-about .column-item p {
  margin: 8px 0 0;
  max-width: 60ch;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--mist);
}

.page-about .about-columns__note {
  margin: clamp(28px, 4vw, 40px) 0 0;
  max-width: 68ch;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--cream-shade);
}

.page-about .about-columns__note a {
  color: var(--neon);
}

.page-about .about-columns__note a:hover,
.page-about .about-columns__note a:focus-visible {
  color: var(--neon-mist);
}

/* ---------- 赛季之外 ---------- */
.page-about .about-beyond {
  background: var(--cream);
  color: var(--brown);
  padding: clamp(56px, 8vw, 104px) 0;
}

.page-about .about-beyond__grid {
  display: grid;
  gap: 20px;
}

.page-about .beyond-card {
  border: 2px solid var(--brown);
  background: #F7F1E4;
  box-shadow: var(--hard-shadow);
  padding: clamp(20px, 2.6vw, 30px);
  display: flex;
  flex-direction: column;
}

.page-about .beyond-card h3 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(19px, 2vw, 23px);
  margin: 0 0 12px;
  line-height: 1.25;
}

.page-about .beyond-card p {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.9;
  color: rgba(35, 24, 15, .78);
}

.page-about .beyond-card__link {
  margin-top: auto;
  align-self: flex-start;
  font-size: 14px;
  letter-spacing: .04em;
}

/* ---------- 结尾 ---------- */
.page-about .about-cta {
  background: var(--turf);
  border-top: 3px solid var(--cream);
  padding: clamp(48px, 7vw, 84px) 0;
}

.page-about .about-cta__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.page-about .about-cta__text h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3vw, 38px);
  line-height: 1.15;
  margin: 0 0 12px;
  max-width: 20ch;
}

.page-about .about-cta__text p {
  margin: 0;
  max-width: 54ch;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--mist);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .about-glance__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-about .about-lede__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  }

  .page-about .about-flow__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  }

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

@media (min-width: 1000px) {
  .page-about .about-era__grid {
    grid-template-columns: 250px minmax(0, 1fr);
    gap: clamp(36px, 4vw, 64px);
  }

  .page-about .era-index {
    position: sticky;
    top: 120px;
    align-self: start;
  }
}

@media (max-width: 480px) {
  .page-about .era-index__link {
    grid-template-columns: auto 1fr;
  }

  .page-about .era-index__num {
    grid-column: 2;
    text-align: left;
  }

  .page-about .flow-step {
    grid-template-columns: 1fr;
    gap: 10px;
    padding-left: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .duty-item:hover {
    transform: none;
  }

  .page-about .flow-step::before {
    transition: none;
  }
}