.page-about {
  --ab-gap: clamp(18px, 3vw, 28px);
  --ab-sec-pad: clamp(52px, 8vw, 104px);
  background: var(--ink-900);
  color: var(--white);
  padding-bottom: clamp(40px, 6vw, 72px);
  overflow-x: hidden;
}

.page-about .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: clamp(16px, 3vw, 26px) 0 0;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--gray);
}

.page-about .breadcrumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--line);
}

.page-about .breadcrumbs a {
  color: var(--gray);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.page-about .breadcrumbs a:hover,
.page-about .breadcrumbs a:focus-visible {
  color: var(--gold-hi);
  border-bottom-color: var(--gold);
}

.page-about .breadcrumbs [aria-current="page"] {
  color: var(--white);
}

/* ---------- 首屏 ---------- */
.page-about .ab-hero {
  padding: clamp(24px, 4vw, 44px) 0 clamp(40px, 6vw, 72px);
  border-bottom: 1px solid var(--line);
}

.page-about .ab-hero__grid {
  display: grid;
  gap: clamp(28px, 4vw, 44px);
  grid-template-columns: 1fr;
}

.page-about .ab-hero__copy h1 {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(34px, 7vw, 62px);
  line-height: 1.06;
  letter-spacing: -0.015em;
  margin: 12px 0 20px;
  color: var(--white);
  max-width: 16em;
}

.page-about .ab-lead {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--gray);
}

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

.page-about .ab-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .ab-stat {
  background: var(--ink-800);
  padding: 16px 14px 18px;
  display: flex;
  flex-direction: column-reverse;
  gap: 6px;
}

.page-about .ab-stat__num {
  font-size: clamp(24px, 4vw, 32px);
  line-height: 1;
  color: var(--gold-hi);
  letter-spacing: -0.02em;
}

.page-about .ab-stat__label {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--gray);
}

.page-about .ab-stat--amber .ab-stat__num {
  color: var(--amber);
}

.page-about .ab-stat--gold {
  background: var(--ink-700);
}

/* ---------- 通用章节 ---------- */
.page-about .ab-section {
  padding: var(--ab-sec-pad) 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .ab-section--spaces,
.page-about .ab-section--honor {
  background: var(--ink-800);
}

.page-about .ab-sec-head {
  max-width: 68ch;
  margin-bottom: clamp(28px, 4vw, 44px);
}

.page-about .ab-sec-idx {
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--gold);
  margin: 0 0 10px;
  padding-left: 34px;
  position: relative;
}

.page-about .ab-sec-idx::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 24px;
  height: 1px;
  background: var(--gold);
}

.page-about .ab-sec-title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(24px, 4.2vw, 38px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  margin: 0 0 14px;
  color: var(--white);
}

.page-about .ab-sec-desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--gray);
}

/* ---------- 时间轴 ---------- */
.page-about .ab-band {
  position: relative;
  margin: 0 0 clamp(26px, 4vw, 40px);
  border: 1px solid var(--line);
  aspect-ratio: 2 / 1;
  overflow: hidden;
  background: linear-gradient(150deg, var(--ink-700), var(--ink-900));
}

.page-about .ab-band img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  opacity: 0.72;
}

.page-about .ab-band__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 8px 14px;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--ink-900);
  background: var(--gold);
}

.page-about .ab-timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 26px;
  position: relative;
}

.page-about .ab-timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(180deg, var(--gold) 0%, var(--gold-hi) 45%, var(--line) 100%);
}

.page-about .tl-node {
  position: relative;
  border-bottom: 1px solid var(--line-soft);
}

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

.page-about .tl-node::before {
  content: "";
  position: absolute;
  left: -24px;
  top: 24px;
  width: 9px;
  height: 9px;
  background: var(--gold);
  transform: rotate(45deg);
}

.page-about .tl-node--done::before {
  background: var(--moss);
}

.page-about .tl-node--current::before {
  background: var(--amber);
  box-shadow: 0 0 0 4px rgba(217, 119, 43, 0.18);
}

.page-about .tl-node summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: baseline;
  gap: 10px 14px;
  padding: 18px 0;
}

.page-about .tl-node summary::-webkit-details-marker {
  display: none;
}

.page-about .tl-node summary:focus-visible {
  outline: 1px solid var(--gold);
  outline-offset: 3px;
}

.page-about .tl-year {
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--gold-hi);
}

.page-about .tl-title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(16px, 2.4vw, 21px);
  line-height: 1.35;
  color: var(--white);
  transition: color 0.18s ease;
}

.page-about .tl-node summary:hover .tl-title {
  color: var(--gold-hi);
}

.page-about .tl-sign {
  position: relative;
  width: 14px;
  height: 14px;
  align-self: center;
}

.page-about .tl-sign::before,
.page-about .tl-sign::after {
  content: "";
  position: absolute;
  background: var(--gold);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.page-about .tl-sign::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 1px;
}

.page-about .tl-sign::after {
  left: 6px;
  top: 0;
  width: 1px;
  height: 14px;
}

.page-about .tl-node details[open] .tl-sign::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-about .tl-body {
  padding: 0 0 20px;
  max-width: 68ch;
}

.page-about .tl-body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--gray);
}

/* ---------- 空间 ---------- */
.page-about .ab-spaces {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--ab-gap);
}

.page-about .space-card {
  border: 1px solid var(--line);
  background: rgba(11, 27, 43, 0.55);
  padding: clamp(18px, 3vw, 26px);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-about .space-card--lead {
  padding: 0;
  gap: 0;
}

.page-about .space-card__fig {
  border: 0;
  border-bottom: 1px solid var(--line);
}

.page-about .space-card--lead .space-card__body {
  padding: clamp(18px, 3vw, 26px);
}

.page-about .space-card__title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(18px, 2.6vw, 24px);
  margin: 0;
  color: var(--white);
}

.page-about .space-card__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--gray);
}

.page-about .space-card__meta {
  margin: auto 0 0;
  padding-top: 10px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--gold);
}

.page-about .space-card--note {
  background: var(--ink-700);
  border-color: var(--line);
}

.page-about .ab-steps {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .ab-steps li {
  display: grid;
  grid-template-columns: 30px 1fr;
  gap: 10px;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--gray);
  padding-top: 10px;
  border-top: 1px solid var(--line-soft);
}

.page-about .ab-steps .mono {
  color: var(--gold-hi);
  font-size: 12px;
  letter-spacing: 0.08em;
}

/* ---------- 团队 ---------- */
.page-about .ab-team {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 48px);
}

.page-about .role-tree {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--ab-gap);
  margin-top: clamp(24px, 4vw, 34px);
}

.page-about .role-card {
  border-left: 1px solid var(--line);
  padding: 4px 0 4px 18px;
  position: relative;
}

.page-about .role-card::before {
  content: "";
  position: absolute;
  left: -3px;
  top: 14px;
  width: 5px;
  height: 5px;
  background: var(--gold);
  transform: rotate(45deg);
}

.page-about .role-card__idx {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--gold);
}

.page-about .role-card__name {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 19px;
  margin: 6px 0 8px;
  color: var(--white);
}

.page-about .role-card__text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--gray);
}

.page-about .ab-team__side {
  display: grid;
  gap: var(--ab-gap);
  align-content: start;
}

.page-about .ab-team__fig {
  border: 1px solid var(--line);
}

.page-about .eco {
  border: 1px solid var(--line);
  padding: clamp(18px, 3vw, 24px);
  background: rgba(18, 38, 58, 0.7);
}

.page-about .eco__title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 18px;
  margin: 0 0 16px;
  color: var(--white);
}

.page-about .eco__group + .eco__group {
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--line-soft);
}

.page-about .eco__label {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gold-hi);
}

.page-about .eco__tags {
  list-style: none;
  margin: 0 0 10px;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .eco__text {
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--gray);
}

/* ---------- 会员 ---------- */
.page-about .ab-member-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--ab-gap);
}

.page-about .member-card {
  border: 1px solid var(--line);
  padding: clamp(18px, 3vw, 26px);
  background: var(--ink-800);
}

.page-about .member-card--accent {
  background: var(--ink-700);
  border-color: var(--gold);
}

.page-about .member-card__title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 19px;
  margin: 0 0 14px;
  color: var(--white);
}

.page-about .member-card__text {
  margin: 0 0 16px;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--gray);
}

.page-about .member-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .member-list li {
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--gray);
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
}

.page-about .member-list li:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .member-list .mono {
  display: inline-block;
  margin-right: 8px;
  padding: 2px 7px;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--ink-900);
  background: var(--gold-hi);
}

/* ---------- 荣誉 ---------- */
.page-about .ab-honor {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--ab-gap);
}

.page-about .honor-card {
  border: 1px solid var(--gold);
  padding: clamp(20px, 3vw, 30px);
  background: linear-gradient(160deg, rgba(201, 164, 92, 0.12), rgba(11, 27, 43, 0) 70%);
}

.page-about .honor-card__year {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--gold-hi);
}

.page-about .honor-card__title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(19px, 2.8vw, 26px);
  line-height: 1.3;
  margin: 0 0 12px;
  color: var(--white);
}

.page-about .honor-card__text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--gray);
}

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

.page-about .honor-list li {
  background: var(--ink-900);
  padding: 14px 18px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
}

.page-about .honor-list__k {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--amber);
}

.page-about .honor-list__v {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--white);
}

/* ---------- 收尾 ---------- */
.page-about .ab-cta {
  padding: clamp(40px, 6vw, 72px) 0 0;
}

.page-about .ab-cta__inner {
  border-top: 1px solid var(--line);
  padding-top: clamp(28px, 4vw, 44px);
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  align-items: end;
}

.page-about .ab-cta__title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(22px, 3.6vw, 32px);
  line-height: 1.2;
  margin: 0 0 10px;
  color: var(--white);
}

.page-about .ab-cta__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--gray);
  max-width: 56ch;
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .ab-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-about .space-card--lead {
    grid-column: span 2;
    display: grid;
    grid-template-columns: 1.15fr 1fr;
    align-items: stretch;
  }

  .page-about .space-card__fig {
    border-bottom: 0;
    border-right: 1px solid var(--line);
    height: 100%;
  }

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

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

  .page-about .member-card--accent {
    grid-column: span 2;
  }

  .page-about .honor-list li {
    grid-template-columns: 110px 1fr;
    align-items: baseline;
    gap: 14px;
  }

  .page-about .ab-cta__inner {
    grid-template-columns: 1.4fr 1fr;
    gap: 28px;
  }

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

@media (min-width: 1040px) {
  .page-about .ab-hero {
    padding-bottom: clamp(56px, 6vw, 84px);
  }

  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: start;
    gap: clamp(40px, 5vw, 72px);
  }

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

  .page-about .ab-timeline {
    padding-left: 34px;
  }

  .page-about .ab-timeline::before {
    left: 8px;
  }

  .page-about .tl-node::before {
    left: -30px;
    top: 26px;
    width: 11px;
    height: 11px;
  }

  .page-about .tl-node summary {
    grid-template-columns: 90px 1fr auto;
    padding: 22px 0;
  }

  .page-about .ab-spaces {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    grid-template-areas:
      "lead lead note"
      "lead lead note";
    align-items: stretch;
  }

  .page-about .space-card--lead {
    grid-area: lead;
  }

  .page-about .space-card--note {
    grid-area: note;
  }

  .page-about .ab-team {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .ab-honor {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
    align-items: start;
  }

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

  .page-about .member-card--accent {
    grid-column: auto;
  }
}
</｜｜DSML｜｜ parameter>
</｜｜DSML｜｜ invoke>
</｜｜DSML｜｜ calls>