.page-about {
  --about-line: rgba(53, 241, 200, 0.18);
  --about-wash: rgba(13, 42, 34, 0.55);
  --about-glow: rgba(53, 241, 200, 0.15);
  display: block;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(1.4rem, 4vw, 2.6rem) 0 clamp(2.6rem, 6vw, 4.6rem);
  background:
    radial-gradient(130% 95% at 88% -10%, var(--about-glow), transparent 58%),
    radial-gradient(90% 70% at -10% 110%, rgba(255, 90, 54, 0.09), transparent 62%);
}

.page-about .about-hero__glow {
  position: absolute;
  inset: auto -12% -55% 42%;
  height: 62%;
  background: radial-gradient(closest-side, rgba(53, 241, 200, 0.16), transparent 72%);
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  display: grid;
  gap: clamp(1.6rem, 4vw, 2.8rem);
  grid-template-columns: minmax(0, 1fr);
}

.page-about .about-hero h1 {
  margin: 0.55rem 0 0.9rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.7rem, 10vw, 5.4rem);
  line-height: 1.02;
  letter-spacing: -0.025em;
}

.page-about .about-hero h1 em {
  font-style: normal;
  color: var(--cyan);
  text-shadow: 0 0 34px rgba(53, 241, 200, 0.35);
}

.page-about .about-hero .lede {
  max-width: 40ch;
  color: var(--paper);
  opacity: 0.88;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.5rem;
}

.page-about .about-hero__panel {
  border: 1px solid var(--glass-line);
  border-radius: var(--radius);
  background: var(--glass);
  padding: clamp(1.05rem, 3vw, 1.5rem);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: var(--shadow-lift);
}

.page-about .about-hero__panel-head {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 1rem;
  font-family: var(--font-data);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-about .about-hero__pulse {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--flame);
  box-shadow: 0 0 0 5px rgba(255, 90, 54, 0.16);
}

.page-about .about-hero__stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
}

.page-about .about-hero__stat {
  display: grid;
  grid-template-columns: auto auto minmax(0, 1fr);
  align-items: baseline;
  gap: 0.2rem 0.35rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}

.page-about .about-hero__stat:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .about-hero__stat-value {
  font-size: clamp(1.7rem, 6vw, 2.3rem);
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
  letter-spacing: -0.02em;
}

.page-about .about-hero__stat-unit {
  font-family: var(--font-data);
  font-size: 0.9rem;
  color: var(--cyan-soft);
}

.page-about .about-hero__stat-label {
  font-size: 0.86rem;
  color: var(--mist);
  grid-column: 1 / -1;
}

/* ---------- 目录 ---------- */
.page-about .about-index {
  padding: clamp(1.8rem, 4.5vw, 3rem) 0;
  border-top: 1px solid var(--glass-line);
  border-bottom: 1px solid var(--glass-line);
  background: linear-gradient(180deg, var(--about-wash), rgba(13, 42, 34, 0.12));
}

.page-about .about-index__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.4rem 1rem;
  margin-bottom: 1.2rem;
}

.page-about .about-index__head .title-m {
  margin: 0;
}

.page-about .about-index__list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-index__item {
  display: grid;
  grid-template-columns: 2.1rem minmax(0, 1fr);
  column-gap: 0.7rem;
  align-items: baseline;
  padding: 0.7rem 0.85rem;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.035);
  transition: border-color var(--speed), background var(--speed), transform var(--speed);
}

.page-about .about-index__item:hover {
  border-color: var(--cyan-line);
  background: rgba(53, 241, 200, 0.06);
  transform: translateX(3px);
}

.page-about .about-index__item .index-item__num {
  grid-column: 1;
  grid-row: 1 / span 2;
  font-size: 0.85rem;
  color: rgba(53, 241, 200, 0.6);
}

.page-about .about-index__item .index-item__title {
  grid-column: 2;
  grid-row: 1;
  font-weight: 600;
  font-size: 0.98rem;
  color: var(--paper);
  text-decoration: none;
}

.page-about .about-index__item .index-item__meta {
  grid-column: 2;
  grid-row: 2;
  font-size: 0.78rem;
  color: var(--mist);
}

/* ---------- 章节骨架 ---------- */
.page-about .about-chapter {
  padding: clamp(2.8rem, 6.5vw, 5rem) 0;
}

.page-about .about-chapter--banded {
  background:
    linear-gradient(180deg, rgba(13, 42, 34, 0.7), rgba(7, 23, 19, 0.2));
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.page-about .about-chapter__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 1rem;
  align-items: start;
  padding-top: 1.1rem;
  margin-bottom: clamp(1.3rem, 3vw, 2rem);
  border-top: 1px solid var(--about-line);
}

.page-about .about-chapter__num {
  grid-row: 1 / span 2;
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  line-height: 0.95;
  color: rgba(53, 241, 200, 0.3);
  letter-spacing: -0.04em;
}

.page-about .about-chapter__head .eyebrow {
  margin: 0;
}

.page-about .about-chapter__head .title-l {
  margin: 0.3rem 0 0;
  grid-column: 2;
  max-width: 22ch;
}

.page-about .about-chapter__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.4rem, 3.5vw, 2.6rem);
}

.page-about .about-chapter__body > .prose {
  margin: 0 0 1rem;
}

.page-about .about-chapter__body > .prose:last-child {
  margin-bottom: 0;
}

.page-about .about-chapter__side {
  display: grid;
  gap: 1rem;
  align-content: start;
}

.page-about .about-chapter__intro {
  margin: 0 0 clamp(1.6rem, 4vw, 2.4rem);
  max-width: 46ch;
}

.page-about .about-chapter__figure {
  margin: clamp(1.8rem, 4.5vw, 2.8rem) 0 0;
}

.page-about .about-chapter .note {
  border-radius: var(--radius-sm);
}

.page-about .about-chapter .note p {
  margin: 0.4rem 0 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--mist);
}

.page-about .about-chapter .note strong {
  display: block;
  font-size: 0.92rem;
  color: var(--paper);
}

/* ---------- 团队占比条 ---------- */
.page-about .about-split {
  list-style: none;
  margin: 1.6rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}

.page-about .about-split__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.3rem 0.8rem;
}

.page-about .about-split__name {
  font-size: 0.88rem;
  color: var(--mist);
}

.page-about .about-split__num {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--paper);
  text-align: right;
}

.page-about .about-split__track {
  grid-column: 1 / -1;
  grid-row: 2;
  display: block;
  height: 4px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.page-about .about-split__fill {
  display: block;
  height: 100%;
  border-radius: inherit;
  width: 0;
  transition: width 0.9s cubic-bezier(0.2, 0.7, 0.3, 1);
}

.page-about .about-split__fill--cyan { background: linear-gradient(90deg, var(--cyan), var(--cyan-soft)); }
.page-about .about-split__fill--flame { background: linear-gradient(90deg, var(--flame), var(--flame-soft)); }

.page-about .about-split.is-visible .about-split__row:nth-child(1) .about-split__fill { width: 83%; }
.page-about .about-split.is-visible .about-split__row:nth-child(2) .about-split__fill { width: 100%; }
.page-about .about-split.is-visible .about-split__row:nth-child(3) .about-split__fill { width: 51%; }

/* ---------- 覆盖条 ---------- */
.page-about .about-cover {
  list-style: none;
  margin: clamp(1.8rem, 4vw, 2.6rem) 0 0;
  padding: clamp(1rem, 2.6vw, 1.4rem) clamp(1rem, 2.6vw, 1.5rem);
  border-radius: var(--radius);
  border: 1px solid var(--glass-line);
  background: rgba(255, 255, 255, 0.04);
  display: grid;
  gap: 1rem;
}

.page-about .cover-row {
  display: grid;
  grid-template-columns: 5.4rem minmax(0, 1fr) 2.4rem;
  align-items: center;
  gap: 0.8rem;
}

.page-about .cover-row__name {
  font-size: 0.85rem;
  color: var(--mist);
}

.page-about .cover-row__track {
  display: block;
  height: 8px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.07);
  overflow: hidden;
}

.page-about .cover-row__fill {
  display: block;
  height: 100%;
  width: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, rgba(53, 241, 200, 0.5), var(--cyan));
}

.page-about .cover-row__fill--flame {
  background: linear-gradient(90deg, rgba(255, 90, 54, 0.45), var(--flame));
}

.page-about .cover-row:nth-child(2) .cover-row__fill { width: 50%; }
.page-about .cover-row:nth-child(3) .cover-row__fill { width: 34%; }

.page-about .cover-row__num {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--paper);
  text-align: right;
}

/* ---------- 侧栏数据板 ---------- */
.page-about .about-plate {
  padding: 1.1rem 1.2rem;
}

.page-about .about-plate .card__meta {
  margin: 0 0 0.35rem;
  color: var(--cyan);
}

.page-about .about-plate .card__title {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
  color: var(--paper);
}

.page-about .about-plate .card__body {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 市州节点 ---------- */
.page-about .about-nodes {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.page-about .about-nodes li {
  font-size: 0.8rem;
  padding: 0.28rem 0.68rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--cyan-line);
  color: var(--cyan-soft);
  background: rgba(53, 241, 200, 0.05);
}

/* ---------- 合作卡 ---------- */
.page-about .about-partners {
  gap: 0.7rem;
}

.page-about .about-partners__card {
  padding: 0.95rem 1rem;
}

.page-about .about-partners__card .card__meta {
  margin: 0 0 0.3rem;
  color: var(--flame-soft);
}

.page-about .about-partners__card .card__title {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.5;
  color: var(--paper);
}

/* ---------- 版本时间线 ---------- */
.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 1.5rem;
  display: grid;
  gap: 0;
}

.page-about .about-timeline__item {
  position: relative;
  border-left: 1px solid var(--about-line);
  padding: 0.15rem 0 1.5rem 1.4rem;
}

.page-about .about-timeline__item:last-child {
  border-left-color: transparent;
  padding-bottom: 0;
}

.page-about .about-timeline__marker {
  position: absolute;
  left: -0.3rem;
  top: 0.5rem;
  width: 0.6rem;
  height: 0.6rem;
  box-sizing: border-box;
  border-radius: 50%;
  background: var(--ink-1);
  border: 2px solid var(--cyan);
  box-shadow: 0 0 0 6px rgba(53, 241, 200, 0.08);
}

.page-about .about-timeline__item--next .about-timeline__marker {
  border-color: var(--flame);
  box-shadow: 0 0 0 6px rgba(255, 90, 54, 0.1);
}

.page-about .about-timeline__body .tag {
  display: inline-block;
  margin-bottom: 0.55rem;
}

.page-about .about-timeline__body .title-m {
  margin: 0 0 0.5rem;
  font-size: clamp(1.08rem, 2.6vw, 1.35rem);
  color: var(--paper);
}

.page-about .about-timeline__body p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.78;
  color: var(--mist);
  max-width: 52ch;
}

/* ---------- 收尾 ---------- */
.page-about .about-cta {
  padding: clamp(2.6rem, 6vw, 4.4rem) 0 clamp(3rem, 7vw, 5rem);
  border-top: 1px solid var(--glass-line);
  background:
    radial-gradient(90% 120% at 12% 0%, rgba(53, 241, 200, 0.13), transparent 60%),
    linear-gradient(180deg, rgba(13, 42, 34, 0.75), rgba(3, 11, 9, 0.35));
}

.page-about .about-cta__inner {
  display: grid;
  gap: 1.6rem;
}

.page-about .about-cta__text .title-l {
  margin: 0.4rem 0 0.8rem;
  max-width: 20ch;
}

.page-about .about-cta__text .prose {
  margin: 0;
  max-width: 46ch;
}

.page-about .about-cta__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  align-content: start;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .about-index__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .cover-row {
    grid-template-columns: 7rem minmax(0, 1fr) 3rem;
  }

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

@media (min-width: 960px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.85fr);
    align-items: end;
  }

  .page-about .about-chapter__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-chapter__head .title-l {
    max-width: 26ch;
    font-size: clamp(1.9rem, 3.1vw, 2.6rem);
  }

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: center;
  }

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

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

@media (prefers-reduced-motion: reduce) {
  .page-about .about-split__fill,
  .page-about .about-index__item {
    transition: none;
  }

  .page-about .about-split__fill { width: 0; }
  .page-about .about-split.is-visible .about-split__row:nth-child(1) .about-split__fill { width: 83%; }
  .page-about .about-split.is-visible .about-split__row:nth-child(2) .about-split__fill { width: 100%; }
  .page-about .about-split.is-visible .about-split__row:nth-child(3) .about-split__fill { width: 51%; }
}
<<<PAGE_CSS_END>>>