.page-about {
  --about-rule: 1px solid var(--line-dark);
  background: var(--ink);
  color: var(--paper);
  padding-bottom: clamp(56px, 9vw, 112px);
}

.page-about [id] {
  scroll-margin-top: clamp(88px, 14vh, 128px);
}

.page-about a:focus-visible,
.page-about button:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumbs {
  padding-top: clamp(20px, 3vw, 36px);
}

.page-about .about-crumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--fog);
}

.page-about .about-crumbs__list a {
  color: var(--fog);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: color .18s ease, border-color .18s ease;
}

.page-about .about-crumbs__list a:hover {
  color: var(--apricot-light);
  border-bottom-color: var(--apricot-light);
}

.page-about .about-crumbs__sep {
  color: rgba(255, 249, 240, .28);
}

.page-about .about-crumbs__here {
  color: var(--paper-white);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
  padding: clamp(26px, 4.5vw, 56px) 0 clamp(32px, 5.5vw, 72px);
  border-bottom: var(--about-rule);
}

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

.page-about .about-hero__eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 clamp(16px, 2.2vw, 24px);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--apricot);
}

.page-about .about-hero__eyebrow::before {
  content: "";
  flex: 0 0 auto;
  width: 26px;
  height: 1px;
  background: var(--apricot);
}

.page-about .about-hero__title {
  margin: 0;
  font-size: clamp(2.2rem, 6.4vw, 4.9rem);
  line-height: 1.04;
  letter-spacing: -.025em;
  font-weight: 800;
  color: var(--paper-white);
}

.page-about .about-hero__lead {
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  max-width: 52ch;
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.85;
  color: rgba(244, 235, 221, .86);
}

.page-about .about-hero__note {
  position: relative;
  min-width: 0;
  padding-left: clamp(16px, 2vw, 24px);
  font-size: 13px;
  line-height: 1.8;
  color: var(--fog);
}

.page-about .about-hero__note::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 1px;
  background: linear-gradient(to bottom, var(--cyan), rgba(71, 240, 208, 0));
}

.page-about .about-hero__note p {
  margin: 0;
}

.page-about .about-hero__note strong {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: .18em;
  color: var(--cyan);
}

@media (min-width: 960px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: end;
    gap: clamp(36px, 5vw, 72px);
  }
}

/* ---------- 索引 + 内容布局 ---------- */
.page-about .about-layout {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
  padding-top: clamp(26px, 4.5vw, 56px);
}

.page-about .about-index {
  margin: 0;
  min-width: 0;
}

.page-about .about-index__label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--fog);
}

.page-about .about-index__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 10px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

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

.page-about .about-index__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  white-space: nowrap;
  padding: 9px 14px;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  font-size: 12px;
  line-height: 1.2;
  color: var(--fog);
  text-decoration: none;
  transition: color .18s ease, border-color .18s ease, background-color .18s ease;
}

.page-about .about-index__link:hover {
  color: var(--paper-white);
  border-color: rgba(71, 240, 208, .55);
  background: rgba(71, 240, 208, .06);
}

.page-about .about-index__num {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .1em;
  color: var(--apricot);
}

@media (min-width: 960px) {
  .page-about .about-layout {
    grid-template-columns: 186px minmax(0, 1fr);
    gap: clamp(36px, 4.5vw, 72px);
    align-items: start;
  }

  .page-about .about-index {
    position: sticky;
    top: clamp(28px, 6vh, 56px);
  }

  .page-about .about-index__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding: 0;
  }

  .page-about .about-index__item {
    border-top: 1px solid var(--line-dark);
  }

  .page-about .about-index__item:last-child {
    border-bottom: 1px solid var(--line-dark);
  }

  .page-about .about-index__link {
    display: flex;
    width: 100%;
    padding: 13px 2px;
    border: 0;
    border-radius: 0;
    background: none;
    white-space: normal;
    font-size: 13px;
    line-height: 1.45;
    transition: color .18s ease, padding-left .18s ease;
  }

  .page-about .about-index__link:hover {
    color: var(--paper-white);
    background: none;
    padding-left: 8px;
  }
}

/* ---------- 画板基础 ---------- */
.page-about .about-flow {
  display: grid;
  gap: clamp(18px, 2.6vw, 28px);
  min-width: 0;
}

.page-about .about-board {
  position: relative;
  min-width: 0;
  padding: clamp(24px, 3.6vw, 44px);
  border-radius: var(--radius);
}

.page-about .about-board--paper {
  background: var(--paper);
  color: var(--black);
  box-shadow: var(--shadow);
}

.page-about .about-board--ink {
  background: var(--ink-2);
  border: 1px solid var(--line-dark);
  color: var(--paper);
}

.page-about .about-board--apricot {
  background: var(--apricot);
  color: var(--black);
}

.page-about .about-board__head {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(18px, 2.6vw, 30px);
}

.page-about .about-board__index {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--cyan);
}

.page-about .about-board--paper .about-board__index {
  color: rgba(10, 16, 14, .52);
}

.page-about .about-board--apricot .about-board__index {
  color: rgba(10, 16, 14, .62);
}

.page-about .about-board__title {
  margin: 0;
  font-size: clamp(1.45rem, 2.9vw, 2.2rem);
  line-height: 1.2;
  letter-spacing: -.015em;
  font-weight: 800;
}

.page-about .about-board p {
  margin: 0 0 1em;
  max-width: 68ch;
  font-size: clamp(14.5px, 1.1vw, 16px);
  line-height: 1.85;
}

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

/* ---------- 图片 ---------- */
.page-about .about-figure {
  margin: 0;
  min-width: 0;
}

.page-about .about-figure__frame {
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--ink-2);
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  transition: transform .45s cubic-bezier(.22, .61, .36, 1);
}

.page-about .about-figure:hover img {
  transform: scale(1.035);
}

.page-about .about-figure__caption {
  margin: 10px 0 0;
  font-size: 12px;
  line-height: 1.65;
  color: var(--fog);
}

.page-about .about-board--paper .about-figure__caption {
  color: rgba(10, 16, 14, .58);
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-figure img {
    transition: none;
  }

  .page-about .about-figure:hover img {
    transform: none;
  }

  .page-about .about-btn {
    transition: none;
  }

  .page-about .about-btn:hover {
    transform: none;
  }
}

/* ---------- 01 起点 ---------- */
.page-about .about-origin {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
}

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

.page-about .about-board .about-note {
  margin: 18px 0 0;
  max-width: 68ch;
  padding: 14px 16px;
  border-left: 2px solid var(--apricot);
  background: rgba(242, 138, 46, .1);
  font-size: 13px;
  line-height: 1.75;
  color: rgba(10, 16, 14, .8);
}

@media (min-width: 800px) {
  .page-about .about-origin {
    grid-template-columns: minmax(0, 1.22fr) minmax(0, 1fr);
    align-items: start;
  }
}

/* ---------- 02 时间线 ---------- */
.page-about .about-timeline {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-timeline__item {
  display: grid;
  gap: 8px;
  padding: clamp(16px, 2.2vw, 22px) 0;
  border-top: 1px solid var(--line-dark);
}

.page-about .about-timeline__item:last-child {
  border-bottom: 1px solid var(--line-dark);
}

.page-about .about-timeline__year {
  font-family: var(--font-mono);
  font-size: clamp(1.1rem, 2vw, 1.45rem);
  font-weight: 600;
  letter-spacing: -.01em;
  color: var(--apricot);
}

.page-about .about-timeline__title {
  margin: 0 0 6px;
  font-size: clamp(15px, 1.4vw, 17px);
  font-weight: 700;
  line-height: 1.4;
  color: var(--paper-white);
}

.page-about .about-timeline__desc {
  margin: 0;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(244, 235, 221, .74);
}

@media (min-width: 720px) {
  .page-about .about-timeline__item {
    grid-template-columns: 92px minmax(0, 1fr);
    gap: clamp(18px, 3vw, 36px);
    align-items: start;
  }
}

/* ---------- 03 叙事方法 ---------- */
.page-about .about-steps {
  margin: clamp(20px, 2.6vw, 28px) 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0;
}

.page-about .about-steps__item {
  display: grid;
  gap: 4px;
  padding: clamp(16px, 2.2vw, 22px) 0;
  border-top: 1px solid rgba(10, 16, 14, .14);
}

.page-about .about-steps__item:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .about-steps__num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--red);
}

.page-about .about-steps__title {
  margin: 0 0 4px;
  font-size: clamp(15px, 1.35vw, 17px);
  font-weight: 700;
  line-height: 1.4;
}

.page-about .about-steps__desc {
  margin: 0;
  max-width: 66ch;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(10, 16, 14, .76);
}

@media (min-width: 640px) {
  .page-about .about-steps__item {
    grid-template-columns: 40px minmax(0, 1fr);
    gap: 16px;
    align-items: baseline;
  }
}

/* ---------- 04 团队 ---------- */
.page-about .about-crew {
  display: grid;
  gap: clamp(22px, 3vw, 34px);
}

.page-about .about-crew__list {
  margin: clamp(16px, 2.2vw, 22px) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0;
}

.page-about .about-crew__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 15px 0;
  border-top: 1px solid var(--line-dark);
}

.page-about .about-crew__item:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .about-crew__num {
  font-family: var(--font-mono);
  font-size: clamp(1.35rem, 2.4vw, 1.85rem);
  font-weight: 600;
  line-height: 1;
  color: var(--cyan);
  min-width: 2ch;
}

.page-about .about-crew__name {
  margin: 0 0 4px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--paper-white);
}

.page-about .about-crew__desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--fog);
}

@media (min-width: 860px) {
  .page-about .about-crew {
    grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
    align-items: start;
  }
}

/* ---------- 05 社群 ---------- */
.page-about .about-community {
  display: grid;
  gap: clamp(20px, 3vw, 30px);
}

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

@media (min-width: 860px) {
  .page-about .about-community {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    align-items: start;
  }
}

/* ---------- 06 下一段 ---------- */
.page-about .about-next {
  display: grid;
  gap: clamp(20px, 3vw, 28px);
}

.page-about .about-next p {
  max-width: 56ch;
}

.page-about .about-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-content: flex-start;
}

.page-about .about-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 13px 22px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 700;
  line-height: 1;
  text-decoration: none;
  transition: transform .18s ease, background-color .18s ease, color .18s ease, border-color .18s ease;
}

.page-about .about-btn--solid {
  background: var(--ink);
  color: var(--paper-white);
  border: 1px solid var(--ink);
}

.page-about .about-btn--solid:hover {
  background: var(--black);
  border-color: var(--black);
  transform: translateY(-2px);
}

.page-about .about-btn--line {
  background: transparent;
  color: var(--ink);
  border: 1px solid rgba(10, 16, 14, .4);
}

.page-about .about-btn--line:hover {
  background: rgba(10, 16, 14, .08);
  transform: translateY(-2px);
}

@media (min-width: 760px) {
  .page-about .about-next {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: end;
    gap: clamp(24px, 4vw, 48px);
  }
}
<<<END>>>