.page-about {
  background: var(--bg);
  color: var(--text);
}

.page-about .about-crumbs {
  padding-block: 20px 0;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 90% at 86% 0%, rgba(147, 233, 216, 0.13), transparent 62%),
    linear-gradient(180deg, rgba(20, 61, 51, 0.78), rgba(6, 26, 21, 0) 82%);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 6px;
  background-image: repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 40px);
  opacity: 0.7;
  pointer-events: none;
}

.page-about .about-hero-grid {
  display: grid;
  gap: 30px;
  padding-block: 40px 46px;
}

.page-about .about-hero h1 {
  margin: 14px 0 0;
  font-family: var(--sans);
  font-weight: 800;
  font-size: clamp(30px, 5.4vw, 54px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--text);
  max-width: 20ch;
}

.page-about .about-em {
  color: var(--gold);
  position: relative;
  white-space: nowrap;
}

.page-about .about-em::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0.06em;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), var(--gold));
  opacity: 0.55;
}

.page-about .about-lede {
  margin: 20px 0 0;
  max-width: 58ch;
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.85;
  color: var(--muted);
}

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

.page-about .about-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-facts > div {
  background: var(--panel);
  padding: 14px 16px 16px;
  transition: background-color 0.18s var(--ease);
}

.page-about .about-facts > div:hover {
  background: var(--raise);
}

.page-about .about-facts dt {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.page-about .about-facts dd {
  margin: 8px 0 0;
  font-family: var(--mono);
  font-size: clamp(19px, 2.4vw, 24px);
  font-weight: 600;
  color: var(--cyan);
  letter-spacing: 0.01em;
}

.page-about .about-facts > div:nth-child(2) dd {
  color: var(--gold);
}

/* ---------- 主体两栏 ---------- */
.page-about .about-body {
  display: grid;
  gap: 28px;
  padding-block: 34px 76px;
}

.page-about .about-toc {
  border-top: 1px solid var(--line);
  padding-top: 14px;
  min-width: 0;
}

.page-about .about-toc-label {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-about .about-toc ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 4px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-about .about-toc a {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 10px;
  font-size: 14px;
  color: var(--muted);
  text-decoration: none;
  white-space: nowrap;
  border-left: 2px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.page-about .about-toc a .mono {
  font-size: 11px;
  opacity: 0.8;
}

.page-about .about-toc a:hover {
  color: var(--text);
  background: var(--panel);
}

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

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

/* ---------- 章节 ---------- */
.page-about .about-section {
  padding-block: 32px 40px;
  border-top: 1px solid var(--line);
}

.page-about .about-section:first-child {
  border-top-color: var(--line);
}

.page-about .about-section-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  margin-bottom: 20px;
}

.page-about .about-num {
  display: block;
  font-size: clamp(38px, 7vw, 64px);
  line-height: 0.85;
  letter-spacing: 0.02em;
  color: var(--line);
  transition: color 0.2s var(--ease);
}

.page-about .about-section:hover .about-num {
  color: var(--raise);
}

.page-about .about-section h2 {
  margin: 0;
  font-family: var(--sans);
  font-weight: 800;
  font-size: clamp(21px, 3.2vw, 31px);
  line-height: 1.32;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-about .about-copy p {
  margin: 0 0 15px;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text);
}

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

/* ---------- 图片 ---------- */
.page-about .about-shot {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--panel);
  overflow: hidden;
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

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

.page-about .about-shot img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: saturate(0.85) contrast(1.05);
}

.page-about .about-shot figcaption {
  padding: 10px 14px 12px;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted);
}

.page-about .about-shot--band {
  margin-top: 24px;
}

.page-about .about-shot--band img {
  aspect-ratio: 12 / 5;
}

/* ---------- 内容生产 ---------- */
.page-about .about-media {
  display: grid;
  gap: 22px;
  margin-top: 22px;
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  display: grid;
  gap: 22px;
  margin-top: 24px;
}

.page-about .about-bars {
  display: grid;
  gap: 12px;
  min-width: 0;
}

.page-about .about-bar {
  padding: 13px 15px 14px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-inline-start: 3px solid var(--raise);
  transition: background-color 0.2s var(--ease), border-color 0.2s var(--ease);
  outline: none;
}

.page-about .about-bar:hover,
.page-about .about-bar:focus,
.page-about .about-bar:focus-within {
  background: var(--raise);
  border-color: var(--cyan);
}

.page-about .about-bar:focus-visible {
  box-shadow: 0 0 0 2px var(--cyan);
}

.page-about .about-bar-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.page-about .about-bar-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
}

.page-about .about-bar-count {
  font-size: 12px;
  color: var(--cyan);
  white-space: nowrap;
}

.page-about .about-bar-track {
  margin-top: 9px;
  height: 6px;
  background: var(--bg);
  overflow: hidden;
}

.page-about .about-bar-fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--gold));
  transition: filter 0.2s var(--ease);
}

.page-about .about-bar:hover .about-bar-fill,
.page-about .about-bar:focus .about-bar-fill {
  filter: brightness(1.2);
}

.page-about .about-bar--editors .about-bar-fill { width: 38%; }
.page-about .about-bar--product .about-bar-fill { width: 29%; }
.page-about .about-bar--ops .about-bar-fill { width: 21%; }
.page-about .about-bar--design .about-bar-fill { width: 12%; }

.page-about .about-bar-note {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 0.22s var(--ease), opacity 0.22s var(--ease), margin-top 0.22s var(--ease);
}

.page-about .about-bar:hover .about-bar-note,
.page-about .about-bar:focus .about-bar-note,
.page-about .about-bar:focus-within .about-bar-note {
  max-height: 6em;
  opacity: 1;
  margin-top: 6px;
}

@media (hover: none) {
  .page-about .about-bar-note {
    max-height: none;
    opacity: 1;
    margin-top: 6px;
  }
}

/* ---------- 版本时间轴 ---------- */
.page-about .about-timeline {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  border-top: 2px solid var(--line);
}

.page-about .about-stage {
  position: relative;
  padding: 22px 14px 18px 0;
  border-bottom: 1px solid var(--line);
  transition: background-color 0.2s var(--ease);
}

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

.page-about .about-stage:hover {
  background: var(--panel);
}

.page-about .about-stage-dot {
  position: absolute;
  top: -7px;
  left: 0;
  width: 11px;
  height: 11px;
  background: var(--cyan);
  border-radius: 50%;
  box-shadow: 0 0 0 3px var(--bg);
}

.page-about .about-stage:last-child .about-stage-dot {
  background: var(--gold);
}

.page-about .about-stage-year {
  display: block;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.page-about .about-stage:last-child .about-stage-year {
  color: var(--gold);
}

.page-about .about-stage h3 {
  margin: 8px 0 8px;
  font-family: var(--sans);
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
}

.page-about .about-stage p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--muted);
}

/* ---------- 对外通道 ---------- */
.page-about .about-links {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-links li {
  background: var(--panel);
  min-width: 0;
}

.page-about .about-links a {
  display: block;
  padding: 16px 18px 18px;
  text-decoration: none;
  color: var(--text);
  transition: background-color 0.2s var(--ease);
}

.page-about .about-links a:hover,
.page-about .about-links a:focus-visible {
  background: var(--raise);
}

.page-about .about-links-title {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: var(--cyan);
  letter-spacing: 0.01em;
}

.page-about .about-links-desc {
  display: block;
  margin-top: 7px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

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

@media (min-width: 760px) {
  .page-about .about-section-head {
    grid-template-columns: 104px minmax(0, 1fr);
    gap: 24px;
    align-items: start;
    margin-bottom: 24px;
  }
}

@media (min-width: 860px) {
  .page-about .about-timeline {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-about .about-stage {
    padding: 24px 16px 20px;
    border-bottom: 0;
    border-left: 1px solid var(--line);
  }

  .page-about .about-stage:first-child {
    border-left: 0;
  }

  .page-about .about-stage-dot {
    left: 16px;
  }
}

@media (min-width: 900px) {
  .page-about .about-media {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.85fr);
    gap: 30px;
    align-items: start;
  }

  .page-about .about-team {
    grid-template-columns: minmax(0, 0.72fr) minmax(0, 1fr);
    gap: 30px;
    align-items: start;
  }

  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.42fr) minmax(0, 0.8fr);
    gap: 52px;
    align-items: end;
    padding-block: 52px 62px;
  }

  .page-about .about-facts {
    align-self: end;
  }
}

@media (min-width: 1000px) {
  .page-about .about-body {
    grid-template-columns: 188px minmax(0, 1fr);
    gap: 56px;
    padding-block: 46px 96px;
    align-items: start;
  }

  .page-about .about-toc {
    position: sticky;
    top: 92px;
  }

  .page-about .about-toc ol {
    flex-direction: column;
    gap: 0;
    overflow: visible;
  }

  .page-about .about-toc a {
    white-space: normal;
    line-height: 1.4;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-shot,
  .page-about .about-bar,
  .page-about .about-bar-fill,
  .page-about .about-bar-note,
  .page-about .about-num,
  .page-about .about-stage {
    transition: none;
  }

  .page-about .about-shot:hover {
    transform: none;
  }
}
<<<END>>>