.page-about {
  --about-glow: rgba(111, 211, 242, 0.10);
  --about-hair: rgba(111, 211, 242, 0.22);
  --about-card-bg: linear-gradient(158deg, rgba(111, 211, 242, 0.09), rgba(6, 18, 29, 0) 62%);
  --about-accent-deep: #17607E;
}

/* ---------- 首屏 ---------- */
.page-about .about-intro__grid {
  display: grid;
  gap: 30px;
  margin-top: 22px;
}

.page-about .about-intro__title {
  margin: 16px 0 18px;
  max-width: 22ch;
  font-size: clamp(29px, 6vw, 50px);
  font-weight: 700;
  line-height: 1.14;
  letter-spacing: -0.02em;
}

.page-about .about-intro__dek {
  margin: 0;
  max-width: 36em;
  font-size: 17px;
  line-height: 1.85;
  color: var(--glacier);
}

.page-about .about-intro__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  align-content: start;
}

.page-about .about-fact {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin: 0;
  padding: 16px 16px 18px;
  border: 1px solid var(--edge);
  border-radius: var(--r-md);
  background: var(--about-card-bg);
  transition: border-color 0.3s ease, transform 0.3s ease;
}

.page-about .about-fact:hover {
  border-color: var(--ice);
  transform: translateY(-2px);
}

.page-about .about-fact .stat__num {
  font-size: 34px;
  line-height: 1.05;
}

.page-about .about-fact .stat__unit {
  font-size: 13px;
  color: var(--glacier);
}

.page-about .about-fact .stat__label {
  margin-top: 4px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--slate);
}

@media (min-width: 900px) {
  .page-about .about-intro__grid {
    grid-template-columns: minmax(0, 1.62fr) minmax(0, 1fr);
    gap: 56px;
    align-items: end;
    margin-top: 32px;
  }
}

/* ---------- 起点与定位 ---------- */
.page-about .about-start__body {
  margin-top: 28px;
}

.page-about .about-note {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px 18px;
  align-content: start;
  padding: 22px 20px 24px;
  border: 1px solid var(--edge);
  border-radius: var(--r-lg);
  background: var(--about-card-bg);
}

.page-about .about-note__k {
  margin: 0;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--slate);
  white-space: nowrap;
}

.page-about .about-note__v {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--snow);
}

@media (min-width: 900px) {
  .page-about .about-start__body {
    margin-top: 34px;
  }
}

/* ---------- 团队与分工 ---------- */
.page-about .about-team__body {
  margin-top: 30px;
}

.page-about .about-team__media {
  margin: 0;
}

.page-about .about-figcap {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--slate);
}

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

.page-about .about-plate {
  padding: 20px 20px 18px;
  cursor: default;
}

.page-about .about-plate h3 {
  margin: 0 0 10px;
  font-size: 18px;
  line-height: 1.4;
}

.page-about .about-plate p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
}

.page-about .about-plate__more {
  max-height: 0;
  margin-top: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 0.38s ease, opacity 0.3s ease, margin-top 0.3s ease;
}

.page-about .about-plate:hover .about-plate__more,
.page-about .about-plate:focus-within .about-plate__more {
  max-height: 240px;
  margin-top: 10px;
  opacity: 1;
}

@media (hover: none) {
  .page-about .about-plate__more {
    max-height: none;
    margin-top: 10px;
    opacity: 1;
  }
}

/* ---------- 资料组织 ---------- */
.page-about .about-data__body {
  margin-top: 30px;
}

.page-about .about-tags {
  margin: 24px 0 0;
}

.page-about .about-tags .chip {
  font-size: 13px;
}

.page-about .about-data__media {
  margin: 0;
}

.page-about .about-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.page-about .about-metric {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin: 0;
  padding: 16px 16px 18px;
  border: 1px solid var(--edge);
  border-radius: var(--r-md);
  background: var(--about-card-bg);
}

.page-about .about-metric .stat__num {
  font-size: 34px;
  line-height: 1.05;
}

.page-about .about-metric .stat__unit {
  font-size: 13px;
  color: var(--glacier);
}

/* ---------- 更新纪律 ---------- */
.page-about .about-disc__grid {
  margin-top: 32px;
}

.page-about .about-disc__card {
  display: flex;
  flex-direction: column;
  padding: 24px 22px 26px;
}

.page-about .about-disc__num {
  display: flex;
  align-items: baseline;
  gap: 0.15em;
  margin: 0;
}

.page-about .about-disc__num .stat__num {
  font-size: 46px;
  line-height: 1;
  color: var(--ice);
}

.page-about .about-disc__num .stat__unit {
  font-size: 14px;
  color: var(--glacier);
}

.page-about .about-disc__card--neon .stat__num {
  color: var(--neon);
}

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

.page-about .about-disc__card h3 {
  margin: 16px 0 10px;
  font-size: 17px;
  line-height: 1.45;
}

.page-about .about-disc__card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--slate);
}

/* ---------- 发展时间轴 ---------- */
.page-about .about-tl-figure {
  margin: 34px 0 0;
}

.page-about .about-tl {
  position: relative;
  display: grid;
  gap: 26px;
  margin: 40px 0 0;
  padding: 0 0 0 46px;
  list-style: none;
}

.page-about .about-tl::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, rgba(111, 211, 242, 0.55), rgba(76, 224, 160, 0.35) 55%, rgba(255, 156, 74, 0.45));
}

.page-about .about-tl__item {
  position: relative;
  display: grid;
  gap: 12px;
}

.page-about .about-tl__node {
  position: absolute;
  left: -46px;
  top: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 31px;
  height: 31px;
  border: 1px solid var(--ice);
  border-radius: var(--r-pill);
  background: var(--deep);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--ice);
  opacity: 0.7;
  transition: opacity 0.32s ease, box-shadow 0.32s ease, transform 0.32s ease;
}

.page-about .about-tl__item.is-visible .about-tl__node {
  opacity: 1;
  box-shadow: 0 0 0 5px rgba(111, 211, 242, 0.12);
  transform: translateY(-1px);
}

.page-about .about-tl__card {
  padding: 20px 22px 22px;
}

.page-about .about-tl__stage {
  margin: 0 0 8px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--ice);
}

.page-about .about-tl__card h3 {
  margin: 0 0 8px;
  font-size: 19px;
  line-height: 1.4;
}

.page-about .about-tl__card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--slate);
}

@media (min-width: 960px) {
  .page-about .about-tl {
    padding-left: 0;
    gap: 30px;
  }

  .page-about .about-tl::before {
    left: 50%;
  }

  .page-about .about-tl__item {
    grid-template-columns: minmax(0, 1fr) 96px minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-tl__node {
    position: static;
    left: auto;
    grid-column: 2;
    grid-row: 1;
    justify-self: center;
    margin-top: 24px;
  }

  .page-about .about-tl__item:nth-child(odd) .about-tl__card {
    grid-column: 1;
    grid-row: 1;
  }

  .page-about .about-tl__item:nth-child(even) .about-tl__card {
    grid-column: 3;
    grid-row: 1;
  }
}

/* ---------- 我们在意的事 ---------- */
.page-about .about-care__list {
  display: grid;
  gap: 20px;
  margin-top: 32px;
}

.page-about .about-care__item {
  padding: 22px 22px 24px;
  border: 1px solid rgba(29, 64, 88, 0.35);
  border-radius: var(--r-lg);
  background: rgba(255, 255, 255, 0.72);
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.page-about .about-care__item:hover {
  transform: translateY(-2px);
  border-color: var(--about-accent-deep);
}

.page-about .about-care__no {
  margin: 0 0 10px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--about-accent-deep);
}

.page-about .about-care__item h3 {
  margin: 0 0 10px;
  font-size: 18px;
  line-height: 1.42;
}

.page-about .about-care__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
}

.page-about .about-cue {
  display: grid;
  gap: 16px;
  margin-top: 34px;
  padding: 24px 22px 26px;
  border: 1px solid rgba(29, 64, 88, 0.3);
  border-radius: var(--r-xl);
  background: linear-gradient(150deg, rgba(29, 64, 88, 0.1), rgba(255, 255, 255, 0.5));
}

.page-about .about-cue__text {
  margin: 0;
  max-width: 40em;
  font-size: 16px;
  line-height: 1.8;
}

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

@media (min-width: 760px) {
  .page-about .about-care__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }

  .page-about .about-cue {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 24px;
    padding: 26px 28px 28px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-fact,
  .page-about .about-plate__more,
  .page-about .about-tl__node,
  .page-about .about-care__item {
    transition: none;
  }
}