.page-about {
  --about-space: clamp(56px, 9vw, 124px);
  --about-radius: var(--og-r-md);
  --about-line: var(--og-line);
  background: var(--og-ink);
  color: var(--og-paper);
  overflow-x: clip;
  padding-bottom: clamp(40px, 7vw, 96px);
}

.page-about h1,
.page-about h2,
.page-about h3 {
  margin: 0;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.page-about p {
  margin: 0;
}

.page-about .about-crumbs {
  padding-top: clamp(18px, 3vw, 30px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(20px, 4vw, 44px) 0 clamp(30px, 5vw, 60px);
  isolation: isolate;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: -20% -10% 10% 30%;
  background:
    radial-gradient(closest-side at 60% 40%, rgba(47, 123, 255, 0.32), transparent 72%),
    radial-gradient(closest-side at 30% 75%, rgba(143, 92, 255, 0.24), transparent 74%);
  filter: blur(6px);
  pointer-events: none;
  z-index: -1;
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 48px);
  align-items: start;
}

.page-about .about-hero__title {
  margin-top: 14px;
  max-width: 17ch;
}

.page-about .about-hero__lede {
  margin-top: clamp(16px, 2.4vw, 24px);
  max-width: 54ch;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3.2vw, 34px);
}

.page-about .about-hero__aside {
  position: relative;
}

.page-about .about-hero__media {
  border-radius: var(--about-radius);
  overflow: hidden;
  border: 1px solid var(--about-line);
  box-shadow: var(--og-shadow-print);
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .about-hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-top: 16px;
  padding: 10px 18px;
  border: 1px solid var(--about-line);
  border-radius: var(--og-pill);
  background: rgba(16, 26, 46, 0.86);
}

.page-about .about-hero__badge-num {
  font-family: var(--og-font-mono);
  font-size: 1.5rem;
  color: var(--og-cyan);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}

.page-about .about-hero__badge-text {
  font-size: 0.875rem;
  color: var(--og-mist);
}

/* ---------- 数字条 ---------- */
.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(28px, 4vw, 46px);
  background: var(--about-line);
  border: 1px solid var(--about-line);
  border-radius: var(--og-r-sm);
  overflow: hidden;
}

.page-about .about-stat {
  display: grid;
  gap: 6px;
  padding: 16px 18px;
  background: var(--og-ink-2);
}

.page-about .about-stat__num {
  font-family: var(--og-font-mono);
  font-size: clamp(1.35rem, 2.6vw, 1.9rem);
  color: var(--og-cyan);
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
}

.page-about .about-stat__num em {
  font-style: normal;
  font-size: 0.62em;
  margin-left: 3px;
  color: var(--og-mist);
}

.page-about .about-stat__label {
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--og-mist);
}

/* ---------- 章节索引 ---------- */
.page-about .about-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: clamp(24px, 3.6vw, 38px);
}

.page-about .about-jump__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--about-line);
  border-radius: var(--og-pill);
  color: var(--og-mist);
  text-decoration: none;
  font-size: 0.875rem;
  transition: color 0.22s var(--og-ease), border-color 0.22s var(--og-ease),
    background-color 0.22s var(--og-ease);
}

.page-about .about-jump__link .og-num {
  font-size: 0.72rem;
  color: var(--og-blue);
}

.page-about .about-jump__link:hover,
.page-about .about-jump__link:focus-visible {
  color: var(--og-paper);
  border-color: var(--og-blue);
  background: rgba(47, 123, 255, 0.14);
}

.page-about .about-jump__link.is-active,
.page-about .about-jump__link[aria-current="true"] {
  color: var(--og-ink);
  background: var(--og-cyan);
  border-color: var(--og-cyan);
}

.page-about .about-jump__link.is-active .og-num,
.page-about .about-jump__link[aria-current="true"] .og-num {
  color: var(--og-ink);
}

/* ---------- 章节通用 ---------- */
.page-about .about-chapter {
  padding: var(--about-space) 0;
  scroll-margin-top: 90px;
}

.page-about .about-chapter .og-chapter {
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-about .about-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 3.2vw, 36px);
  align-items: start;
}

.page-about .about-split__main,
.page-about .about-split__side {
  display: grid;
  gap: clamp(14px, 2.2vw, 22px);
  min-width: 0;
}

/* ---------- 暖纸档案卡 ---------- */
.page-about .about-paper {
  border-radius: var(--about-radius);
  transition: box-shadow 0.24s var(--og-ease);
}

.page-about .about-paper:hover {
  box-shadow: 0 0 0 1px rgba(47, 123, 255, 0.55), var(--og-shadow-print);
}

.page-about .about-paper p {
  font-size: 0.9688rem;
  line-height: 1.8;
}

.page-about .about-paper p + p {
  margin-top: 14px;
}

.page-about .about-paper--tight {
  padding: clamp(18px, 3vw, 28px);
}

/* ---------- 正门注释卡 ---------- */
.page-about .about-note {
  padding: clamp(20px, 3vw, 28px);
}

.page-about .about-note__list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-note__list li {
  display: flex;
  gap: 10px;
  align-items: baseline;
  font-size: 0.9375rem;
  color: var(--og-paper);
  padding-bottom: 12px;
  border-bottom: 1px solid var(--about-line);
}

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

.page-about .about-note__list .og-num {
  color: var(--og-blue);
  font-size: 0.75rem;
  flex: 0 0 auto;
}

/* ---------- 六栏列表 ---------- */
.page-about .about-chapters {
  display: grid;
  border-top: 1px solid var(--about-line);
  margin-top: clamp(20px, 3vw, 32px);
}

.page-about .about-chapters__item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: clamp(16px, 2.4vw, 26px) 0;
  border-bottom: 1px solid var(--about-line);
  transition: background-color 0.22s var(--og-ease), padding-left 0.22s var(--og-ease);
}

.page-about .about-chapters__item:hover {
  background: rgba(16, 26, 46, 0.7);
  padding-left: 12px;
}

.page-about .about-chapters__num {
  font-size: 0.875rem;
  color: var(--og-violet);
  transition: color 0.22s var(--og-ease);
}

.page-about .about-chapters__item:hover .about-chapters__num {
  color: var(--og-cyan);
}

.page-about .about-chapters__name {
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--og-paper);
}

.page-about .about-chapters__text {
  margin-top: 6px;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--og-mist);
  max-width: 62ch;
}

/* ---------- 行内指引 ---------- */
.page-about .about-inline-link {
  margin-top: clamp(20px, 3vw, 32px);
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--og-mist);
}

.page-about .about-inline-link a {
  color: var(--og-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(40, 240, 208, 0.42);
  transition: color 0.2s var(--og-ease), border-color 0.2s var(--og-ease);
}

.page-about .about-inline-link a:hover,
.page-about .about-inline-link a:focus-visible {
  color: var(--og-paper);
  border-color: var(--og-paper);
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  list-style: none;
  margin: clamp(20px, 3vw, 32px) 0 0;
  padding: 0;
}

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 clamp(22px, 3.4vw, 36px) clamp(30px, 5vw, 50px);
}

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

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--og-violet);
  box-shadow: 0 0 0 4px rgba(143, 92, 255, 0.16);
  transition: background-color 0.22s var(--og-ease), box-shadow 0.22s var(--og-ease);
}

.page-about .about-timeline__item::after {
  content: "";
  position: absolute;
  left: 5.5px;
  top: 28px;
  bottom: 6px;
  width: 1px;
  background: linear-gradient(180deg, var(--about-line), rgba(38, 52, 77, 0.15));
}

.page-about .about-timeline__item:last-child::after {
  display: none;
}

.page-about .about-timeline__item:hover::before {
  background: var(--og-cyan);
  box-shadow: 0 0 0 6px rgba(40, 240, 208, 0.18);
}

.page-about .about-timeline__year {
  font-family: var(--og-font-mono);
  font-size: clamp(1.4rem, 3vw, 2rem);
  line-height: 1;
  color: var(--og-violet);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  transition: color 0.22s var(--og-ease);
}

.page-about .about-timeline__item:hover .about-timeline__year {
  color: var(--og-cyan);
}

.page-about .about-timeline__name {
  margin-top: 8px;
  font-size: 1.0625rem;
  font-weight: 500;
}

.page-about .about-timeline__text {
  margin-top: 8px;
  font-size: 0.9375rem;
  line-height: 1.78;
  color: var(--og-mist);
  max-width: 66ch;
}

.page-about .about-timeline__media {
  margin-top: clamp(26px, 4vw, 44px);
  border-radius: var(--about-radius);
  overflow: hidden;
  border: 1px solid var(--about-line);
}

.page-about .about-timeline__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.page-about .about-team__card {
  display: grid;
  gap: 4px;
  padding: 16px 18px;
}

.page-about .about-team__num {
  font-family: var(--og-font-mono);
  font-size: 1.75rem;
  line-height: 1;
  color: var(--og-magenta);
  font-variant-numeric: tabular-nums;
}

.page-about .about-team__role {
  font-size: 0.9375rem;
  color: var(--og-paper);
}

.page-about .about-team__desc {
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--og-mist);
}

.page-about .about-team__media {
  border-radius: var(--about-radius);
  overflow: hidden;
  border: 1px solid var(--about-line);
}

.page-about .about-team__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 更新节奏 ---------- */
.page-about .about-rhythm-card {
  padding: clamp(20px, 3vw, 28px);
}

.page-about .about-rhythm {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
}

.page-about .about-rhythm__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 12px 0;
  border-bottom: 1px solid var(--about-line);
}

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

.page-about .about-rhythm__when {
  font-family: var(--og-font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.02em;
  color: var(--og-cyan);
  font-variant-numeric: tabular-nums;
}

.page-about .about-rhythm__what {
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--og-paper);
}

/* ---------- 伙伴网络 ---------- */
.page-about .about-network {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(18px, 3vw, 28px);
  background: var(--about-line);
  border: 1px solid var(--about-line);
  border-radius: var(--og-r-sm);
  overflow: hidden;
}

.page-about .about-network__item {
  display: grid;
  gap: 8px;
  padding: clamp(20px, 3.4vw, 34px) clamp(16px, 2.6vw, 26px);
  background: linear-gradient(160deg, rgba(143, 92, 255, 0.14), rgba(8, 11, 18, 0.9));
}

.page-about .about-network__num {
  font-family: var(--og-font-mono);
  font-size: clamp(2.2rem, 5.4vw, 3.4rem);
  line-height: 1;
  color: var(--og-orange);
  font-variant-numeric: tabular-nums;
}

.page-about .about-network__label {
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--og-mist);
}

.page-about .about-values {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(14px, 2.4vw, 22px);
  margin-top: clamp(22px, 3.4vw, 34px);
}

.page-about .about-values__card {
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--about-line);
  border-radius: var(--about-radius);
  background: rgba(16, 26, 46, 0.55);
  transition: border-color 0.22s var(--og-ease), background-color 0.22s var(--og-ease);
}

.page-about .about-values__card:hover {
  border-color: var(--og-blue);
  background: rgba(16, 26, 46, 0.9);
}

.page-about .about-values__title {
  margin-top: 10px;
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--og-paper);
}

.page-about .about-values__card p:not(.og-eyebrow) {
  margin-top: 10px;
  font-size: 0.9375rem;
  line-height: 1.78;
  color: var(--og-mist);
}

/* ---------- 备案与联系 ---------- */
.page-about .about-contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 3vw, 30px);
  align-items: start;
}

.page-about .about-contact__paper {
  padding: clamp(22px, 3.6vw, 36px);
}

.page-about .about-contact__list {
  margin: 16px 0 0;
  display: grid;
}

.page-about .about-contact__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(8, 11, 18, 0.14);
}

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

.page-about .about-contact__row dt {
  font-family: var(--og-font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  opacity: 0.66;
}

.page-about .about-contact__row dd {
  margin: 0;
  font-size: 0.9688rem;
  line-height: 1.65;
  word-break: break-word;
}

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

.page-about .about-contact__lead {
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--og-mist);
}

.page-about .about-contact__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 4px;
}

/* ---------- 回到开头 ---------- */
.page-about .about-top {
  display: flex;
  justify-content: flex-end;
  margin-top: clamp(26px, 4vw, 46px);
}

.page-about .about-top__link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  border: 1px solid var(--about-line);
  border-radius: var(--og-pill);
  color: var(--og-paper);
  text-decoration: none;
  font-size: 0.875rem;
  background: rgba(16, 26, 46, 0.8);
  transition: border-color 0.2s var(--og-ease), color 0.2s var(--og-ease),
    background-color 0.2s var(--og-ease);
}

.page-about .about-top__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--og-cyan);
  box-shadow: 0 0 0 4px rgba(40, 240, 208, 0.16);
  animation: about-breathe 3.6s ease-in-out infinite;
}

.page-about .about-top__link:hover,
.page-about .about-top__link:focus-visible {
  border-color: var(--og-cyan);
  background: rgba(40, 240, 208, 0.12);
}

@keyframes about-breathe {
  0%, 100% { box-shadow: 0 0 0 3px rgba(40, 240, 208, 0.12); }
  50% { box-shadow: 0 0 0 7px rgba(40, 240, 208, 0.22); }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-top__dot {
    animation: none;
  }
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-about .about-chapters__item {
    grid-template-columns: 64px minmax(0, 1fr);
    align-items: baseline;
    gap: 16px;
  }

  .page-about .about-chapters__num {
    font-size: 1rem;
    padding-top: 2px;
  }

  .page-about .about-contact__row {
    grid-template-columns: 5.5rem minmax(0, 1fr);
    align-items: baseline;
    gap: 16px;
  }

  .page-about .about-rhythm__row {
    grid-template-columns: 8.5rem minmax(0, 1fr);
    align-items: baseline;
    gap: 14px;
  }
}

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

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

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

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: center;
  }

  .page-about .about-split {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
  }

  .page-about .about-split--reverse {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.72fr);
  }

  .page-about .about-contact {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: clamp(24px, 4vw, 44px);
  }
}

@media (min-width: 1100px) {
  .page-about .about-hero__title {
    font-size: clamp(3.5rem, 6.4vw, 6.4rem);
  }
}
<<<END>>>