.page-about {
  --about-axis: 44px;
  --about-gap: clamp(14px, 2.4vw, 26px);
  display: block;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-top: clamp(16px, 3vw, 34px);
}

.page-about .about-hero__grid {
  display: grid;
  gap: var(--about-gap);
  align-items: center;
}

.page-about .about-hero__body {
  display: grid;
  gap: 16px;
  align-content: center;
  min-width: 0;
}

.page-about .about-hero__title {
  margin: 0;
  font-family: var(--f-head);
  font-size: clamp(1.9rem, 4.6vw, 3.3rem);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-about .about-hero__lede {
  margin: 0;
  max-width: 42ch;
  font-size: clamp(0.98rem, 1.2vw, 1.1rem);
  line-height: 1.85;
  color: var(--dim);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 4px;
}

.page-about .about-hero__shot {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--edge);
  border-radius: var(--r-lg);
  background: var(--c-arena);
}

.page-about .about-hero__shot img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.page-about .about-hero__cap {
  position: absolute;
  left: 14px;
  bottom: 14px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 13px;
  border: 1px solid var(--edge);
  border-radius: 999px;
  background: rgba(5, 10, 24, 0.84);
  color: var(--ink);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}

.page-about .about-hero__figures {
  list-style: none;
  margin: clamp(18px, 2.6vw, 28px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--edge);
  border-radius: var(--r-md);
  background: var(--edge);
  overflow: hidden;
}

.page-about .about-hero__figures li {
  display: grid;
  gap: 4px;
  padding: 14px 16px;
  background: linear-gradient(180deg, var(--c-panel), var(--c-arena));
}

.page-about .about-hero__num {
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--c-lime);
  font-variant-numeric: tabular-nums;
}

.page-about .about-hero__figures .stat-label {
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  color: var(--dim);
}

/* ---------- 品牌介绍 ---------- */
.page-about .about-intro__grid {
  display: grid;
  gap: var(--about-gap);
}

.page-about .about-intro__main > p {
  margin: 0 0 1em;
  color: var(--dim);
  font-size: 0.98rem;
  line-height: 1.85;
}

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

.page-about .about-intro__side {
  display: grid;
  gap: 12px;
  align-content: start;
}

.page-about .about-intro__chip {
  display: grid;
  gap: 9px;
  padding: 16px 18px;
  border: 1px solid var(--edge);
  border-radius: var(--r-md);
  background: var(--c-arena);
  transition: border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.page-about .about-intro__chip:hover {
  border-color: var(--c-cyan);
  background: var(--c-panel);
}

.page-about .about-intro__chip p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--dim);
}

/* ---------- 时间线 ---------- */
.page-about .tl-intro {
  display: grid;
  gap: var(--about-gap);
  margin-bottom: clamp(26px, 4vw, 46px);
}

.page-about .tl-intro__text p {
  margin: 0 0 12px;
  max-width: 46ch;
  font-size: 0.96rem;
  line-height: 1.85;
  color: var(--dim);
}

.page-about .tl-intro__jump {
  display: inline-block;
  font-family: var(--f-mono);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px dashed rgba(61, 240, 208, 0.5);
  padding-bottom: 2px;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}

.page-about .tl-intro__jump:hover {
  color: var(--c-lime);
  border-bottom-color: var(--c-lime);
}

.page-about .tl-intro__shot {
  margin: 0;
  max-width: 250px;
  overflow: hidden;
  border: 1px solid var(--edge);
  border-radius: var(--r-lg);
  background: var(--c-arena);
}

.page-about .tl-intro__shot img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 3;
  object-fit: cover;
}

.page-about .tl-intro__cap {
  padding: 9px 12px;
  border-top: 1px solid var(--edge);
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--dim);
}

.page-about .tl {
  display: grid;
  gap: clamp(30px, 4.6vw, 58px);
}

.page-about .tl__stage {
  position: relative;
  display: grid;
  gap: 16px;
}

.page-about .tl__watermark {
  position: absolute;
  right: -6px;
  top: -22px;
  z-index: 0;
  font-size: clamp(4rem, 13vw, 8.5rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.05em;
  color: var(--c-chalk);
  opacity: 0.04;
  pointer-events: none;
  user-select: none;
}

.page-about .tl__stage-head {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 12px;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--edge);
}

.page-about .tl__stage-title {
  margin: 0;
  font-size: clamp(1.02rem, 1.7vw, 1.3rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-about .tl__stage-note {
  margin: 0 0 0 auto;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--c-lime);
  font-variant-numeric: tabular-nums;
}

.page-about .tl__list {
  position: relative;
  z-index: 1;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .tl__list::before {
  content: "";
  position: absolute;
  left: var(--about-axis);
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: linear-gradient(180deg, var(--c-cyan), var(--edge) 55%, transparent);
  opacity: 0.55;
}

.page-about .tl__item {
  position: relative;
  padding-left: calc(var(--about-axis) + 16px);
  min-width: 0;
}

.page-about .tl__ver {
  position: absolute;
  left: 0;
  top: 12px;
  width: var(--about-axis);
  padding-right: 10px;
  text-align: right;
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--c-lime);
  font-variant-numeric: tabular-nums;
}

.page-about .tl__card {
  padding: 13px 16px;
  border: 1px solid var(--edge);
  border-radius: var(--r-md);
  background: var(--c-panel);
  transition: border-color 0.18s var(--ease), background-color 0.18s var(--ease), transform 0.18s var(--ease);
}

.page-about .tl__item:hover .tl__card,
.page-about .tl__item:focus-within .tl__card {
  border-color: var(--c-cyan);
  background: #16233f;
  transform: translateY(-1px);
}

.page-about .tl__title {
  margin: 0 0 4px;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-about .tl__desc {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--dim);
}

.page-about .tl__stage--early .tl__card {
  background: var(--c-arena);
  border-color: #1d2c48;
}

.page-about .tl__stage--mid .tl__card {
  padding: 12px 15px;
}

.page-about .tl__stage--late .tl__card {
  padding: 10px 14px;
}

.page-about .tl__stage--late .tl__title {
  font-size: 0.88rem;
}

.page-about .tl__stage--late .tl__desc {
  font-size: 0.8rem;
  line-height: 1.65;
}

.page-about .tl__item--focus .tl__card {
  border-color: var(--c-cyan);
  background: linear-gradient(135deg, rgba(61, 240, 208, 0.14), rgba(19, 31, 58, 0.92) 62%);
  box-shadow: 0 0 0 1px rgba(61, 240, 208, 0.2);
}

.page-about .tl__item--focus .tl__ver {
  color: var(--c-cyan);
}

/* ---------- 栏目体系地图 ---------- */
.page-about .map__band {
  display: grid;
  gap: clamp(16px, 2.4vw, 26px);
  padding: clamp(18px, 2.8vw, 32px);
  border: 1px solid var(--edge);
  border-radius: var(--r-lg);
  background:
    radial-gradient(110% 130% at 0% 0%, rgba(61, 240, 208, 0.1), transparent 58%),
    linear-gradient(160deg, var(--c-arena), var(--c-void));
}

.page-about .map__count {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--edge);
}

.page-about .map__num {
  font-size: clamp(2.3rem, 6vw, 3.8rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--c-orange);
  font-variant-numeric: tabular-nums;
}

.page-about .map__count-label {
  font-size: 0.86rem;
  letter-spacing: 0.04em;
  color: var(--dim);
}

.page-about .map__grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

.page-about .map__cat {
  position: relative;
  padding: 14px 16px 14px 18px;
  border: 1px solid var(--edge);
  border-left: 3px solid var(--c-cyan);
  border-radius: var(--r-md);
  background: rgba(11, 23, 48, 0.8);
  transition: transform 0.18s var(--ease), border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.page-about .map__cat:hover {
  transform: translateY(-2px);
  background: var(--c-panel);
}

.page-about .map__cat:nth-child(4n + 2) {
  border-left-color: var(--c-orange);
}

.page-about .map__cat:nth-child(4n + 3) {
  border-left-color: var(--c-lime);
}

.page-about .map__cat:nth-child(4n + 4) {
  border-left-color: #6f86b5;
}

.page-about .map__code {
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--dim);
}

.page-about .map__name {
  margin: 4px 0 6px;
  font-size: 1.02rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-about .map__sub {
  margin: 0;
  font-size: 0.81rem;
  line-height: 1.65;
  color: var(--dim);
}

/* ---------- 团队与节奏 ---------- */
.page-about .about-team__grid {
  display: grid;
  gap: var(--about-gap);
}

.page-about .about-team__roles {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
  align-content: start;
}

.page-about .role {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-areas:
    "num name"
    "num desc";
  column-gap: 16px;
  align-items: start;
  padding: 16px 18px;
  border: 1px solid #dcd4c2;
  border-radius: var(--r-md);
  background: var(--c-paper);
  color: #0b1730;
  box-shadow: 6px 6px 0 -2px rgba(61, 240, 208, 0.3), -4px -4px 0 -2px rgba(255, 106, 44, 0.18);
}

.page-about .role__num {
  grid-area: num;
  font-size: clamp(1.8rem, 3.4vw, 2.4rem);
  font-weight: 800;
  line-height: 1;
  color: #0b1730;
  font-variant-numeric: tabular-nums;
}

.page-about .role__name {
  grid-area: name;
  margin: 0 0 4px;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: #0b1730;
}

.page-about .role__desc {
  grid-area: desc;
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.7;
  color: #3a4a68;
}

.page-about .about-team__pulse {
  display: grid;
  gap: 12px;
  align-content: start;
}

.page-about .about-team__shot {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--edge);
  border-radius: var(--r-lg);
  background: var(--c-arena);
}

.page-about .about-team__shot img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .pulse__row {
  display: grid;
  grid-template-columns: auto auto;
  justify-content: start;
  align-items: baseline;
  gap: 4px 10px;
  padding: 13px 15px;
  border: 1px solid var(--edge);
  border-radius: var(--r-md);
  background: var(--c-panel);
}

.page-about .pulse__row--peak {
  border-color: rgba(255, 106, 44, 0.5);
  background: linear-gradient(120deg, rgba(255, 106, 44, 0.12), var(--c-panel) 70%);
}

.page-about .pulse__num {
  font-size: 1.6rem;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--c-lime);
  font-variant-numeric: tabular-nums;
}

.page-about .pulse__row--peak .pulse__num {
  color: var(--c-orange);
}

.page-about .pulse__unit {
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  color: var(--dim);
}

.page-about .pulse__note {
  grid-column: 1 / -1;
  margin: 6px 0 0;
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--dim);
}

/* ---------- 数据合作与覆盖 ---------- */
.page-about .about-partners__grid {
  display: grid;
  gap: var(--about-gap);
}

.page-about .about-partners__lead {
  display: grid;
  gap: 8px;
  align-content: start;
  padding: clamp(18px, 2.4vw, 26px);
  border: 1px solid var(--edge);
  border-radius: var(--r-lg);
  background: linear-gradient(155deg, rgba(61, 240, 208, 0.12), var(--c-arena) 58%);
}

.page-about .about-partners__lead .big {
  font-size: clamp(2.6rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--c-cyan);
  font-variant-numeric: tabular-nums;
}

.page-about .about-partners__lead h3 {
  margin: 0;
  font-size: 1.02rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-about .about-partners__lead p {
  margin: 0;
  font-size: 0.87rem;
  line-height: 1.78;
  color: var(--dim);
}

.page-about .about-partners__stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--edge);
  border-radius: var(--r-md);
  background: var(--edge);
  overflow: hidden;
}

.page-about .about-partners__stats li {
  display: grid;
  gap: 5px;
  padding: 15px 16px;
  background: var(--c-arena);
}

.page-about .stat__num {
  font-size: clamp(1.25rem, 2.6vw, 1.7rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--c-lime);
  font-variant-numeric: tabular-nums;
}

.page-about .about-partners__stats .stat-label {
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  color: var(--dim);
}

/* ---------- 收束 ---------- */
.page-about .about-cta__board {
  position: relative;
  overflow: hidden;
  display: grid;
  gap: 20px;
  padding: clamp(24px, 4vw, 46px);
  border: 1px solid var(--edge);
  border-radius: var(--r-lg);
  background:
    radial-gradient(120% 140% at 100% 0%, rgba(255, 106, 44, 0.2), transparent 62%),
    linear-gradient(140deg, var(--c-panel), var(--c-arena) 58%, var(--c-void));
}

.page-about .about-cta__board::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 3px;
  background: linear-gradient(90deg, var(--c-cyan), var(--c-orange) 55%, transparent);
}

.page-about .about-cta__title {
  margin: 0 0 10px;
  font-size: clamp(1.4rem, 2.9vw, 2.1rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-about .about-cta__copy p {
  margin: 0;
  max-width: 48ch;
  font-size: 0.92rem;
  line-height: 1.85;
  color: var(--dim);
}

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

/* ---------- 进入视口显现 ---------- */
.page-about [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}

.page-about [data-reveal].is-in {
  opacity: 1;
  transform: none;
}

/* ---------- 断点 ---------- */
@media (min-width: 620px) {
  .page-about .map__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 760px) {
  .page-about .about-hero__figures {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-hero__shot img {
    aspect-ratio: 4 / 3;
  }

  .page-about .tl-intro {
    grid-template-columns: minmax(0, 1fr) minmax(0, 250px);
    align-items: start;
  }

  .page-about .tl-intro__shot {
    max-width: none;
  }
}

@media (min-width: 900px) {
  .page-about {
    --about-axis: 92px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  }

  .page-about .about-intro__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  }

  .page-about .about-partners__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.45fr);
  }

  .page-about .about-cta__board {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    align-items: center;
  }

  .page-about .tl__item {
    padding-left: calc(var(--about-axis) + 26px);
  }

  .page-about .tl__item:nth-child(even) {
    padding-left: calc(var(--about-axis) + 74px);
  }

  .page-about .tl__card {
    padding: 15px 19px;
  }

  .page-about .tl__stage--late .tl__card {
    padding: 11px 15px;
  }

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

@media (min-width: 1000px) {
  .page-about .map__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .page-about .tl__card,
  .page-about .map__cat,
  .page-about .about-intro__chip {
    transition: none;
  }
}