.page-about {
  --about-rail: 200px;
  background: var(--void);
  color: var(--text);
  font-family: var(--font-body);
  overflow-x: clip;
}

.page-about .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
  font-size: 0.8rem;
  color: var(--dim-deep);
}

.page-about .breadcrumbs a {
  color: var(--dim);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-about .breadcrumbs a:hover {
  border-bottom-color: var(--violet);
}

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

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: calc(var(--header-h) + 32px) 0 0;
  background:
    radial-gradient(120% 90% at 88% -10%, rgba(124, 92, 255, 0.22), transparent 62%),
    radial-gradient(80% 60% at -10% 110%, rgba(59, 245, 200, 0.08), transparent 60%),
    var(--void);
  border-bottom: 1px solid var(--hair);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(90deg, rgba(45, 42, 69, 0.5) 0 1px, transparent 1px 96px);
  opacity: 0.5;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 78%);
}

.page-about .about-hero-grid {
  position: relative;
  display: grid;
  gap: 30px;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter) 32px;
}

.page-about .about-hero-eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--dim);
}

.page-about .about-hero-dot {
  width: 5px;
  height: 5px;
  background: var(--cyan);
  border-radius: 50%;
  flex: none;
}

.page-about .about-hero-title {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-size: clamp(2rem, 8vw, 4.1rem);
  font-weight: 700;
  line-height: 1.03;
  letter-spacing: 0.005em;
  color: var(--text);
}

.page-about .about-hero-lede {
  max-width: 46ch;
  margin: 0 0 26px;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--dim);
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-hero-media {
  position: relative;
  margin: 0;
  border: 1px solid var(--hair);
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: var(--panel-deep);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 calc(100% - 22px));
}

.page-about .about-hero-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(1.05) contrast(1.05);
}

.page-about .about-hero-tag {
  position: absolute;
  left: 14px;
  bottom: 16px;
  display: flex;
  gap: 6px;
}

.page-about .about-hero-stats {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 14px 20px 0;
  border-top: 1px solid var(--hair);
}

.page-about .about-stat:nth-child(even) {
  padding-left: 14px;
  border-left: 1px solid var(--hair-soft);
}

.page-about .about-stat-num {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--text);
  letter-spacing: -0.01em;
}

.page-about .about-stat-label {
  font-size: 0.78rem;
  line-height: 1.5;
  color: var(--dim-deep);
}

/* ---------- 主体骨架 ---------- */
.page-about .about-layout {
  display: grid;
  gap: 0;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter) 64px;
}

.page-about .about-toc {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 18px 0 4px;
  margin-bottom: 8px;
  scrollbar-width: none;
}

.page-about .about-toc::-webkit-scrollbar {
  display: none;
}

.page-about .about-toc-title {
  display: none;
}

.page-about .about-toc a {
  flex: none;
  padding: 6px 12px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--dim);
  text-decoration: none;
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  white-space: nowrap;
}

.page-about .about-toc a[aria-current="true"] {
  color: var(--void);
  background: var(--cyan);
  border-color: var(--cyan);
}

/* ---------- 章节 ---------- */
.page-about .about-sec {
  padding: 40px 0 44px;
  border-top: 1px solid var(--hair-soft);
}

.page-about .about-sec-num {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 13vw, 5.6rem);
  font-weight: 200;
  line-height: 0.85;
  letter-spacing: 0.02em;
  color: rgba(124, 92, 255, 0.3);
}

@supports (-webkit-text-stroke: 1px red) {
  .page-about .about-sec-num {
    color: transparent;
    -webkit-text-stroke: 1px var(--hair);
  }
}

.page-about .about-sec-title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 5vw, 2.3rem);
  font-weight: 600;
  line-height: 1.14;
  color: var(--text);
}

.page-about .about-sec p {
  max-width: 60ch;
  margin: 0 0 16px;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--dim);
}

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

/* ---------- 数字与分类行 ---------- */
.page-about .about-figures {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 26px 0;
  background: var(--hair);
  border: 1px solid var(--hair);
}

.page-about .about-figure {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 14px;
  background: var(--panel-deep);
}

.page-about .about-figure b {
  font-family: var(--font-mono);
  font-size: clamp(1.35rem, 5.5vw, 1.9rem);
  font-weight: 500;
  color: var(--text);
}

.page-about .about-figure span {
  font-size: 0.78rem;
  line-height: 1.5;
  color: var(--dim-deep);
}

.page-about .about-rows {
  border-top: 1px solid var(--hair);
}

.page-about .about-row {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--hair-soft);
}

.page-about .about-row-key {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-about .about-row-text {
  margin: 0;
  font-size: 0.95rem;
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline-wrap {
  position: relative;
  margin-top: 28px;
}

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

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(180deg, var(--violet), var(--cyan) 72%, transparent);
}

.page-about .about-tl-item {
  position: relative;
  padding: 0 0 34px;
}

.page-about .about-tl-item:last-child {
  padding-bottom: 0;
}

.page-about .about-tl-item::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 6px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--void);
  border: 1px solid var(--cyan);
  box-shadow: 0 0 0 3px rgba(59, 245, 200, 0.12);
  transition: box-shadow 220ms ease, border-color 220ms ease;
}

.page-about .about-tl-item:hover::before {
  border-color: var(--amber);
  box-shadow: 0 0 0 5px rgba(255, 179, 71, 0.16);
}

.page-about .about-tl-year {
  display: inline-block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 0.92rem;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-about .about-tl-title {
  margin: 0 0 6px;
  font-family: var(--font-body);
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--text);
}

.page-about .about-tl-note {
  max-width: 44ch;
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--dim-deep);
  transition: color 220ms ease;
}

.page-about .about-tl-item:hover .about-tl-note {
  color: var(--dim);
}

.page-about .about-tl-media {
  display: none;
}

/* ---------- 团队 ---------- */
.page-about .about-team-grid {
  display: grid;
  gap: 26px;
  margin-top: 24px;
}

.page-about .about-team-media {
  margin: 0;
  border: 1px solid var(--hair);
  background: var(--panel-deep);
  overflow: hidden;
}

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

.page-about .about-team-media figcaption {
  padding: 12px 14px;
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--dim-deep);
  border-top: 1px solid var(--hair-soft);
}

.page-about .about-team-body > p {
  max-width: 58ch;
}

.page-about .about-teams {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--hair);
}

.page-about .about-teams li {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--hair-soft);
}

.page-about .about-team-idx {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--violet-soft);
  padding-top: 3px;
}

.page-about .about-teams strong {
  display: block;
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}

.page-about .about-teams p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.72;
  color: var(--dim-deep);
}

/* ---------- 协作 ---------- */
.page-about .about-award {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 18px;
  align-items: center;
  margin-top: 26px;
  padding: 22px 18px;
  background: linear-gradient(120deg, var(--violet-ink), var(--panel-deep) 70%);
  border: 1px solid var(--hair);
  border-left: 2px solid var(--amber);
}

.page-about .about-award-num {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 11vw, 3.6rem);
  font-weight: 300;
  line-height: 1;
  color: var(--amber);
}

.page-about .about-award-text strong {
  display: block;
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}

.page-about .about-award-text p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--dim);
}

/* ---------- 价值列表 ---------- */
.page-about .about-value-list {
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-value-list li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 14px;
  padding: 20px 0;
  border-top: 1px solid var(--hair-soft);
}

.page-about .about-value-list li:last-child {
  border-bottom: 1px solid var(--hair-soft);
}

.page-about .about-value-idx {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--dim-deep);
  padding-top: 4px;
}

.page-about .about-value-list h3 {
  margin: 0 0 6px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
}

.page-about .about-value-list p {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.75;
  color: var(--dim);
}

/* ---------- 收尾 ---------- */
.page-about .about-cta {
  margin-top: 12px;
  padding: 34px 22px;
  border: 1px solid var(--hair);
  background:
    radial-gradient(100% 120% at 100% 0%, rgba(124, 92, 255, 0.24), transparent 62%),
    var(--panel-deep);
}

.page-about .about-cta-eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-about .about-cta-title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 5.4vw, 2.1rem);
  font-weight: 600;
  line-height: 1.16;
  color: var(--text);
}

.page-about .about-cta-text {
  max-width: 52ch;
  margin: 0 0 22px;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--dim);
}

.page-about .about-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 720px) {
  .page-about .about-hero {
    padding-top: calc(var(--header-h) + 48px);
  }

  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: end;
    gap: 40px;
    padding-bottom: 44px;
  }

  .page-about .about-hero-media {
    aspect-ratio: 4 / 5;
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - 30px), 0 100%);
  }

  .page-about .about-hero-lede {
    font-size: 1.06rem;
  }

  .page-about .about-hero-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-stat {
    padding: 18px 18px 22px 0;
  }

  .page-about .about-stat:nth-child(even) {
    padding-left: 0;
    border-left: none;
  }

  .page-about .about-stat + .about-stat {
    padding-left: 18px;
    border-left: 1px solid var(--hair-soft);
  }

  .page-about .about-figures {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-row {
    grid-template-columns: 96px minmax(0, 1fr);
    align-items: baseline;
    gap: 20px;
    padding: 18px 0;
  }

  .page-about .about-team-grid {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: 36px;
    align-items: start;
  }

  .page-about .about-award {
    padding: 26px 24px;
    gap: 26px;
  }

  .page-about .about-cta {
    padding: 44px 38px;
  }
}

@media (min-width: 1024px) {
  .page-about .about-layout {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: 72px;
    padding-bottom: 96px;
  }

  .page-about .about-toc {
    position: sticky;
    top: calc(var(--header-h) + 40px);
    display: block;
    align-self: start;
    overflow: visible;
    padding: 0 0 0 18px;
    margin: 88px 0 0;
    border-left: 1px solid var(--hair);
  }

  .page-about .about-toc-title {
    display: block;
    margin: 0 0 14px;
    font-family: var(--font-mono);
    font-size: 0.68rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--dim-deep);
  }

  .page-about .about-toc a {
    display: block;
    padding: 7px 0;
    border: none;
    border-radius: 0;
    background: none;
    font-size: 0.8rem;
    letter-spacing: 0.04em;
    color: var(--dim-deep);
    transition: color 180ms ease, transform 180ms ease;
  }

  .page-about .about-toc a:hover {
    color: var(--text);
    transform: translateX(3px);
  }

  .page-about .about-toc a[aria-current="true"] {
    color: var(--cyan);
    background: none;
    box-shadow: inset 2px 0 0 var(--cyan);
    padding-left: 10px;
  }

  .page-about .about-sec {
    padding: 56px 0 60px;
  }

  .page-about .about-sec-title {
    max-width: 22ch;
  }

  .page-about .about-timeline-wrap {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 190px;
    gap: 46px;
    align-items: start;
    margin-top: 34px;
  }

  .page-about .about-tl-media {
    display: block;
    border: 1px solid var(--hair);
    overflow: hidden;
    background: var(--panel-deep);
    margin-top: 6px;
  }

  .page-about .about-tl-media img {
    display: block;
    width: 100%;
    height: auto;
    object-fit: cover;
    opacity: 0.7;
  }

  .page-about .about-tl-year {
    font-size: 0.98rem;
  }

  .page-about .about-value-list li {
    grid-template-columns: 54px minmax(0, 1fr);
    padding: 26px 0;
  }

  .page-about .about-value-list h3 {
    font-size: 1.06rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-toc a,
  .page-about .about-tl-note,
  .page-about .about-tl-item::before {
    transition: none;
  }

  .page-about .about-toc a:hover {
    transform: none;
  }
}
<<<PAGE_CSS_DONE>>>