.page-about {
  --about-edge: clamp(18px, 2.4vw, 34px);
  --about-soft: rgba(35, 39, 46, .5);
  --about-line: rgba(155, 166, 180, .22);
  color: var(--text);
}

.page-about .breadcrumb {
  padding-top: clamp(14px, 2vw, 26px);
  padding-bottom: clamp(8px, 1.4vw, 16px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding-bottom: clamp(34px, 5vw, 68px);
  overflow: hidden;
}

.page-about .about-hero__band {
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  display: block;
}

.page-about .about-hero__grid {
  display: grid;
  gap: var(--gap);
  padding-top: clamp(18px, 3vw, 40px);
}

.page-about .about-hero__main {
  min-width: 0;
}

.page-about .about-hero__title {
  margin: 16px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 6.4vw, 58px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  background: linear-gradient(120deg, #EDEFF2 18%, #FFC24A 78%, #FF7A18 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-about .about-hero__lead {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--muted);
}

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

.page-about .about-hero__side {
  border-top: 2px solid var(--iron);
  padding-top: 18px;
  min-width: 0;
}

.page-about .about-facts {
  margin: 0;
  display: grid;
  gap: 1px;
  background: var(--about-line);
  border: 1px solid var(--about-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-facts__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  background: var(--panel);
}

.page-about .about-facts__label {
  margin: 0;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--muted);
}

.page-about .about-facts__value {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 20px;
  color: var(--gold);
  letter-spacing: .01em;
}

.page-about .about-facts__note {
  margin: 14px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 版本演进 ---------- */
.page-about .about-track {
  background:
    linear-gradient(180deg, rgba(21, 23, 27, .86), rgba(11, 12, 14, 0)),
    radial-gradient(120% 60% at 88% 0%, rgba(255, 122, 24, .1), transparent 62%);
  border-top-left-radius: var(--radius-lg);
  border-bottom-right-radius: var(--radius-lg);
}

.page-about .about-track__figure {
  margin: 0 0 clamp(26px, 4vw, 46px);
}

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

.page-about .about-track__item {
  min-width: 0;
}

.page-about .about-track .disclosure {
  position: relative;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 0 10px;
  padding: 12px 14px;
  background: var(--panel);
  border: 1px solid var(--about-line);
  border-radius: var(--radius);
  transition: border-color .25s ease, background-color .25s ease;
}

.page-about .about-track .disclosure:hover {
  border-color: rgba(255, 122, 24, .5);
}

.page-about .about-track .disclosure[data-open] {
  background: linear-gradient(180deg, rgba(255, 122, 24, .08), rgba(21, 23, 27, .96));
  border-color: rgba(255, 122, 24, .55);
}

.page-about .about-track .disclosure__trigger {
  appearance: none;
  -webkit-appearance: none;
  width: 100%;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.page-about .about-track .disclosure__trigger:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
  border-radius: 6px;
}

.page-about .about-track__ver {
  flex: 0 0 auto;
  min-width: 44px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 15px;
  color: var(--orange);
  letter-spacing: .04em;
}

.page-about .about-track__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.4;
  color: var(--text);
}

.page-about .about-track .disclosure__sign {
  position: relative;
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  pointer-events: none;
}

.page-about .about-track .disclosure__sign::before,
.page-about .about-track .disclosure__sign::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 11px;
  height: 2px;
  background: var(--muted);
  transform: translate(-50%, -50%);
  transition: transform .25s ease, background-color .25s ease;
}

.page-about .about-track .disclosure__sign::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.page-about .about-track .disclosure[data-open] .disclosure__sign::before,
.page-about .about-track .disclosure[data-open] .disclosure__sign::after {
  background: var(--orange);
}

.page-about .about-track .disclosure[data-open] .disclosure__sign::after {
  transform: translate(-50%, -50%) rotate(0deg);
}

.page-about .about-track .disclosure__panel {
  grid-column: 1 / -1;
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows .3s ease;
}

.page-about .about-track .disclosure[data-open] .disclosure__panel {
  grid-template-rows: 1fr;
}

.page-about .about-track .disclosure__body {
  overflow: hidden;
}

.page-about .about-track .disclosure__body p {
  margin: 12px 0 4px;
  padding-left: 56px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 更新节奏 ---------- */
.page-about .about-pulse {
  background:
    linear-gradient(180deg, rgba(31, 214, 232, .07), rgba(11, 12, 14, 0) 70%);
}

.page-about .about-pulse__grid {
  display: grid;
  gap: var(--gap);
}

.page-about .about-pulse__clocks {
  display: grid;
  gap: 14px;
  margin-top: 28px;
}

.page-about .about-clock {
  position: relative;
  padding: 20px 20px 20px 22px;
  background: var(--panel);
  border-left: 3px solid var(--orange);
  border-top-right-radius: var(--radius-lg);
  border-bottom-right-radius: var(--radius);
  border-top-left-radius: 4px;
  border-bottom-left-radius: 4px;
}

.page-about .about-clock--alt {
  border-left-color: var(--cyan);
}

.page-about .about-clock__time {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(30px, 7vw, 46px);
  line-height: 1;
  letter-spacing: .02em;
  color: var(--gold);
}

.page-about .about-clock--alt .about-clock__time {
  color: var(--cyan);
}

.page-about .about-clock__label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--text);
}

.page-about .about-clock p {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--muted);
}

.page-about .about-pulse__narrow {
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-about .about-sidecard {
  position: relative;
  padding: 22px 18px 18px;
  background: var(--about-soft);
  border: 1px solid var(--about-line);
  border-bottom-left-radius: var(--radius-lg);
  border-top-right-radius: var(--radius-lg);
  border-top-left-radius: var(--radius);
  border-bottom-right-radius: var(--radius);
}

.page-about .about-sidecard__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  line-height: 1.35;
  color: var(--text);
}

.page-about .about-sidecard__text {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  border-top: 1px solid var(--iron);
}

.page-about .about-team__grid {
  display: grid;
  gap: var(--gap);
}

.page-about .about-team__lead {
  margin: 16px 0 0;
  max-width: 58ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--muted);
}

.page-about .about-roles {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--about-line);
  border-top: 1px solid var(--about-line);
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-role {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 2px 14px;
  padding: 16px 0;
  background: var(--ink);
}

.page-about .about-role__id {
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 13px;
  color: var(--gold);
  letter-spacing: .06em;
  padding-top: 4px;
}

.page-about .about-role__name {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  color: var(--text);
}

.page-about .about-role p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .about-team__figure {
  margin: 0;
  align-self: start;
}

/* ---------- 宽幅分隔 ---------- */
.page-about .about-split {
  padding: clamp(20px, 4vw, 48px) 0;
}

.page-about .about-split__figure {
  margin: 0;
  position: relative;
}

.page-about .about-split__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  max-width: min(100%, 42ch);
  padding: 14px 18px;
  background: rgba(11, 12, 14, .82);
  border-left: 3px solid var(--gold);
  border-top-right-radius: var(--radius-lg);
  font-size: 15px;
  line-height: 1.6;
  color: var(--text);
  backdrop-filter: blur(2px);
}

/* ---------- 合作生态 ---------- */
.page-about .about-partners__grid {
  display: grid;
  gap: var(--gap);
  margin-top: clamp(24px, 4vw, 40px);
}

.page-about .about-partner-card {
  padding: 24px 20px;
  background: var(--panel);
  border: 1px solid var(--about-line);
  border-top-right-radius: var(--radius-lg);
  border-bottom-left-radius: var(--radius-lg);
  border-top-left-radius: 4px;
  border-bottom-right-radius: 4px;
}

.page-about .about-partner-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  color: var(--text);
}

.page-about .about-partner-card__text {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .about-chips {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 16px 0 0;
  padding: 0;
}

.page-about .about-honor {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-top: clamp(24px, 4vw, 40px);
  padding: 20px;
  background: linear-gradient(120deg, rgba(255, 122, 24, .14), rgba(31, 214, 232, .1));
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 194, 74, .3);
}

.page-about .about-honor__badge {
  flex: 0 0 auto;
  width: 58px;
  height: 58px;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 26px;
  color: var(--ink);
  background: var(--tiger);
  border-radius: 50%;
}

.page-about .about-honor__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--text);
}

/* ---------- 长期做法 ---------- */
.page-about .about-pledge__list {
  display: grid;
  gap: 12px;
  margin-top: 26px;
}

.page-about .about-pledge .disclosure {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 0 10px;
  padding: 16px 16px 16px 20px;
  background: var(--panel);
  border-left: 3px solid var(--iron);
  border-top-right-radius: var(--radius-lg);
  border-bottom-right-radius: var(--radius);
  transition: border-color .25s ease;
}

.page-about .about-pledge .disclosure[data-open],
.page-about .about-pledge .disclosure:hover {
  border-left-color: var(--orange);
}

.page-about .about-pledge .disclosure__trigger {
  appearance: none;
  -webkit-appearance: none;
  width: 100%;
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.page-about .about-pledge .disclosure__trigger:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
  border-radius: 6px;
}

.page-about .about-pledge__name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  line-height: 1.4;
  color: var(--text);
}

.page-about .about-pledge .disclosure__sign {
  position: relative;
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  pointer-events: none;
}

.page-about .about-pledge .disclosure__sign::before,
.page-about .about-pledge .disclosure__sign::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 11px;
  height: 2px;
  background: var(--muted);
  transform: translate(-50%, -50%);
  transition: transform .25s ease, background-color .25s ease;
}

.page-about .about-pledge .disclosure__sign::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.page-about .about-pledge .disclosure[data-open] .disclosure__sign::before,
.page-about .about-pledge .disclosure[data-open] .disclosure__sign::after {
  background: var(--orange);
}

.page-about .about-pledge .disclosure[data-open] .disclosure__sign::after {
  transform: translate(-50%, -50%) rotate(0deg);
}

.page-about .about-pledge .disclosure__panel {
  grid-column: 1 / -1;
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows .3s ease;
}

.page-about .about-pledge .disclosure[data-open] .disclosure__panel {
  grid-template-rows: 1fr;
}

.page-about .about-pledge .disclosure__body {
  overflow: hidden;
}

.page-about .about-pledge .disclosure__body p {
  margin: 14px 0 2px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 下一段路 ---------- */
.page-about .about-next {
  background:
    linear-gradient(180deg, rgba(255, 122, 24, .06), rgba(11, 12, 14, 0) 60%);
}

.page-about .about-next__grid {
  margin-top: clamp(22px, 3.6vw, 36px);
}

.page-about .about-next-card {
  padding: 22px 18px;
  background: var(--panel);
  border: 1px solid var(--about-line);
  border-bottom-left-radius: var(--radius-lg);
  border-top-right-radius: var(--radius-lg);
  border-top-left-radius: 4px;
  border-bottom-right-radius: 4px;
}

.page-about .about-next-card__id {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--cyan);
}

.page-about .about-next-card__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  line-height: 1.4;
  color: var(--text);
}

.page-about .about-next-card p {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .about-cta {
  margin-top: clamp(28px, 4.5vw, 50px);
  padding: clamp(24px, 4vw, 38px) clamp(20px, 3vw, 34px);
  background: linear-gradient(120deg, rgba(255, 122, 24, .16), rgba(31, 214, 232, .1));
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 194, 74, .26);
}

.page-about .about-cta__text {
  margin: 0;
  max-width: 62ch;
  font-size: 16.5px;
  line-height: 1.72;
  color: var(--text);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

/* ---------- 桌面端 ---------- */
@media (min-width: 720px) {
  .page-about .about-pulse__clocks {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

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

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

@media (min-width: 960px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
    gap: clamp(28px, 4vw, 56px);
  }

  .page-about .about-hero__side {
    border-top: 0;
    border-left: 1px solid var(--iron);
    padding-top: 6px;
    padding-left: clamp(20px, 2.4vw, 32px);
  }

  .page-about .about-track__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
  }

  .page-about .about-pulse__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
    gap: clamp(28px, 4vw, 52px);
  }

  .page-about .about-pulse__narrow {
    grid-template-columns: minmax(0, 1fr);
    padding-top: 8px;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
    gap: clamp(28px, 4vw, 52px);
  }

  .page-about .about-team__figure {
    position: sticky;
    top: 96px;
  }

  .page-about .about-track .disclosure__body p {
    padding-left: 0;
  }
}

@media (min-width: 1100px) {
  .page-about .about-track__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .disclosure__panel,
  .page-about .disclosure__sign::before,
  .page-about .disclosure__sign::after {
    transition: none;
  }
}
</main>