.page-about {
  --about-rule: rgba(192, 138, 78, .34);
  --about-hair: rgba(143, 163, 184, .22);
  --about-glow: rgba(111, 191, 162, .16);
  color: var(--ink-800);
  background: var(--paper);
}

.page-about h2 {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(25px, 4vw, 34px);
  line-height: 1.24;
  margin: 8px 0 12px;
}

.page-about h3 {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 19px;
  line-height: 1.42;
  margin: 0 0 8px;
}

.page-about .section--ink p {
  color: rgba(246, 241, 231, .82);
}

/* 首屏 */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  right: -14%;
  top: -20%;
  width: 66%;
  height: 138%;
  background: linear-gradient(158deg, rgba(192, 138, 78, .18), rgba(18, 49, 74, 0) 64%);
  transform: rotate(-7deg);
  pointer-events: none;
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 34px;
}

.page-about .about-hero h1 {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(34px, 8vw, 64px);
  line-height: 1.1;
  letter-spacing: -.01em;
  margin: 12px 0 18px;
  color: var(--paper);
}

.page-about .about-hero__quote {
  margin: 22px 0 26px;
  padding: 4px 0 4px 16px;
  border-left: 2px solid var(--copper);
  font-family: var(--font-head);
  font-size: 18px;
  line-height: 1.6;
  color: var(--copper-soft);
}

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

.page-about .about-hero__media .media-frame__inner {
  overflow: hidden;
  border: 1px solid var(--about-rule);
  border-radius: var(--radius-lg);
  background: var(--ink-700);
}

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

.page-about .about-figures {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 30px;
  margin: 22px 0 0;
  padding: 0;
}

.page-about .about-figures__item {
  margin: 0;
  min-width: 88px;
}

.page-about .about-figures dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--slate);
}

.page-about .about-figures dd {
  margin: 6px 0 0;
}

.page-about .about-figures__num {
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1.1;
  color: var(--copper-soft);
  letter-spacing: .02em;
}

/* 左窄右宽分栏 */
.page-about .about-split {
  display: grid;
  gap: 34px;
}

.page-about .about-rail__title {
  margin: 10px 0 12px;
}

.page-about .about-rail__note {
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--paper-ink);
}

.page-about .section--ink .about-rail__note {
  color: var(--slate);
}

.page-about .about-years {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
}

.page-about .about-years__link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 14px;
  box-sizing: border-box;
  border: 1px solid var(--about-rule);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--copper);
  text-decoration: none;
  transition: background .24s var(--ease), color .24s var(--ease);
}

.page-about .about-years__link:hover,
.page-about .about-years__link:focus-visible {
  background: var(--copper);
  color: var(--ink-900);
}

/* 纵向时间轴 */
.page-about .about-timeline {
  list-style: none;
  position: relative;
  margin: 0;
  padding: 0 0 0 26px;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: linear-gradient(180deg, var(--copper), rgba(192, 138, 78, .12));
}

.page-about .about-node {
  position: relative;
  padding-bottom: 22px;
}

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

.page-about .about-node::before {
  content: "";
  position: absolute;
  left: -25px;
  top: 20px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--celadon);
  box-shadow: 0 0 0 4px var(--about-glow);
}

.page-about .about-node__year {
  display: inline-block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--copper);
}

.page-about .about-node__card {
  padding: 20px 20px 22px;
  background: var(--paper-dim);
  border-top: 2px solid var(--copper);
  border-radius: var(--radius-sm);
  box-shadow: 0 12px 26px rgba(8, 19, 31, .07);
}

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

.page-about .about-node__code {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--copper);
}

.page-about .about-node__card--live {
  background: var(--ink-700);
  border-top-color: var(--celadon);
}

.page-about .about-node__card--live h3 {
  color: var(--paper);
}

.page-about .about-node__card--live p {
  color: rgba(246, 241, 231, .82);
}

.page-about .about-node__card--live .about-node__code {
  color: var(--celadon);
}

/* 内容治理 */
.page-about .about-head {
  max-width: 720px;
  margin-bottom: 28px;
}

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

.page-about .about-principles {
  display: grid;
  gap: 16px;
}

.page-about .about-principle {
  padding: 22px 22px 24px;
  border: 1px solid var(--about-rule);
  border-radius: var(--radius-lg);
  background: linear-gradient(165deg, rgba(18, 49, 74, .92), rgba(11, 27, 43, .96));
}

.page-about .about-principle h3 {
  color: var(--paper);
  margin-bottom: 10px;
}

.page-about .about-principle p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(246, 241, 231, .78);
}

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

.page-about .about-principle__no {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .16em;
  color: var(--copper);
}

.page-about .about-principle__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* 版本记录 */
.page-about .about-versions {
  display: grid;
  gap: 12px;
}

.page-about .about-version {
  display: grid;
  gap: 6px;
  padding: 16px 18px 18px;
  background: var(--paper-dim);
  border-left: 3px solid var(--copper);
  border-radius: var(--radius-sm);
}

.page-about .about-version__no {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--copper);
}

.page-about .about-version__range {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--slate);
}

.page-about .about-version__note {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-800);
}

/* 团队与协作 */
.page-about .about-team__grid {
  display: grid;
  gap: 28px;
}

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

.page-about .about-team__media .media-frame__inner,
.page-about .about-ios__media .media-frame__inner {
  overflow: hidden;
  border: 1px solid var(--about-rule);
  border-radius: var(--radius-lg);
}

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

.page-about .about-roles {
  list-style: none;
  display: grid;
  gap: 14px;
  margin: 18px 0 20px;
  padding: 0;
}

.page-about .about-roles li {
  padding-left: 16px;
  border-left: 2px solid var(--copper);
  font-size: 15px;
  line-height: 1.8;
  color: rgba(246, 241, 231, .78);
}

.page-about .about-roles strong {
  display: block;
  margin-bottom: 2px;
  font-family: var(--font-head);
  font-size: 17px;
  color: var(--paper);
}

/* iOS 阅读 */
.page-about .about-ios__grid {
  display: grid;
  gap: 28px;
}

.page-about .about-ios__body > p {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--paper-ink);
}

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

.page-about .about-ios__list {
  list-style: none;
  counter-reset: ios;
  display: grid;
  gap: 12px;
  margin: 18px 0 22px;
  padding: 0;
}

.page-about .about-ios__list li {
  position: relative;
  padding-left: 40px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-800);
}

.page-about .about-ios__list li::before {
  counter-increment: ios;
  content: counter(ios, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  padding: 1px 6px;
  border: 1px solid var(--about-rule);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--copper);
}

/* 服务与联络 */
.page-about .about-reach__grid {
  display: grid;
  gap: 26px;
}

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

.page-about .about-reach__note a {
  color: var(--copper-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .about-reach__cards {
  list-style: none;
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
}

.page-about .about-reach__cards li {
  display: grid;
  gap: 5px;
  padding: 14px 16px;
  border: 1px solid var(--about-hair);
  border-radius: var(--radius-sm);
  background: rgba(18, 49, 74, .55);
}

.page-about .about-reach__key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--slate);
}

.page-about .about-reach__val {
  font-size: 15px;
  line-height: 1.65;
  color: var(--paper);
  word-break: break-word;
}

.page-about .about-reach__cta {
  margin-top: 26px;
}

@media (min-width: 720px) {
  .page-about .about-principles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

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

  .page-about .about-version {
    grid-template-columns: 150px 160px minmax(0, 1fr);
    align-items: baseline;
    gap: 10px 16px;
    padding: 18px 22px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 4.4fr) minmax(0, 7fr);
    align-items: center;
    gap: clamp(32px, 5vw, 72px);
  }

  .page-about .about-split {
    grid-template-columns: minmax(0, 3.4fr) minmax(0, 8fr);
    gap: clamp(28px, 4vw, 64px);
    align-items: start;
  }

  .page-about .about-rail {
    position: sticky;
    top: 96px;
  }

  .page-about .about-principles {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
    align-items: start;
    padding-bottom: 28px;
  }

  .page-about .about-principle:nth-child(2) {
    transform: translateY(26px);
  }

  .page-about .about-principle:nth-child(3) {
    transform: translateY(12px);
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 5.5fr) minmax(0, 6.5fr);
    align-items: center;
    gap: clamp(28px, 4vw, 58px);
  }

  .page-about .about-ios__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: center;
    gap: clamp(28px, 4vw, 58px);
  }

  .page-about .about-reach__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: clamp(28px, 4vw, 58px);
    align-items: start;
  }

  .page-about .about-node {
    padding-bottom: 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-years__link {
    transition: none;
  }
}
<<<PAGE_CSS_END>>>