.page-about {
  padding-bottom: 96px;
}

.page-about .about-wrap {
  padding-top: 32px;
}

/* 面包屑 */
.page-about .about-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 28px;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-about .about-crumbs__link {
  color: var(--muted);
  text-decoration: none;
}

.page-about .about-crumbs__link:hover,
.page-about .about-crumbs__link:focus-visible {
  color: var(--neon);
}

.page-about .about-crumbs__sep {
  color: rgba(71, 245, 176, 0.4);
}

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

/* 首屏 */
.page-about .about-hero {
  margin-bottom: 56px;
}

.page-about .about-hero__kicker {
  margin: 0;
  color: var(--neon);
}

.page-about .about-hero__title {
  margin: 16px 0 24px;
  font-family: var(--display);
  font-weight: 300;
  font-size: clamp(36px, 7.4vw, 84px);
  line-height: 0.98;
  letter-spacing: -0.03em;
  color: var(--text);
}

.page-about .about-hero__title em {
  font-style: normal;
  color: var(--neon);
}

.page-about .about-hero__lede {
  display: grid;
  gap: 14px;
  max-width: 60ch;
}

.page-about .about-hero__lede p {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
}

.page-about .about-hero__lede p + p {
  color: var(--muted);
}

.page-about .about-figures {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px 18px;
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--line-soft);
}

.page-about .figure__num {
  display: block;
  font-size: clamp(28px, 4.4vw, 46px);
  line-height: 1;
  font-weight: 400;
  color: var(--neon);
  font-variant-numeric: tabular-nums;
}

.page-about .figure__label {
  display: block;
  margin-top: 8px;
  font-size: 12px;
  line-height: 1.5;
  letter-spacing: 0.08em;
  color: var(--muted);
}

/* 布局：索引 + 正文 */
.page-about .about-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
}

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

.page-about .about-index__title {
  margin: 0 0 12px;
  color: var(--muted);
}

.page-about .about-index__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-about .about-index__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 14px;
  white-space: nowrap;
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
  text-decoration: none;
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-about .about-index__link .mono {
  color: rgba(71, 245, 176, 0.65);
  font-size: 11px;
}

.page-about .about-index__link:hover,
.page-about .about-index__link:focus-visible {
  color: var(--neon);
  border-color: rgba(71, 245, 176, 0.55);
}

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

/* 章节 */
.page-about .about-chapter {
  margin-bottom: 76px;
}

.page-about .chapter-head {
  display: grid;
  gap: 10px;
  padding-top: 22px;
  margin-bottom: 26px;
  border-top: 1px solid var(--line-soft);
}

.page-about .chapter-num {
  font-family: var(--mono);
  font-size: clamp(52px, 9vw, 116px);
  font-weight: 100;
  line-height: 0.82;
  letter-spacing: -0.02em;
  color: rgba(71, 245, 176, 0.2);
}

@supports (-webkit-text-stroke: 1px #fff) {
  .page-about .chapter-num {
    color: transparent;
    -webkit-text-stroke: 1px rgba(71, 245, 176, 0.4);
  }
}

.page-about .chapter-title {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(24px, 3.2vw, 38px);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-about .chapter-lede {
  margin: 0 0 26px;
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
}

.page-about .chapter-body {
  display: grid;
  gap: 24px;
}

.page-about .about-prose p {
  margin: 0 0 16px;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
}

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

.page-about .about-prose a {
  color: var(--neon);
  text-decoration: none;
  border-bottom: 1px solid rgba(71, 245, 176, 0.4);
}

.page-about .about-prose a:hover,
.page-about .about-prose a:focus-visible {
  border-bottom-color: var(--neon);
}

.page-about .about-prose--tight {
  margin-top: 22px;
}

.page-about .about-prose--tight p {
  font-size: 15px;
  color: var(--muted);
}

.page-about .chapter-aside {
  padding-left: 14px;
  border-left: 1px solid var(--line);
}

.page-about .chapter-aside__figure {
  margin: 0;
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1;
  color: var(--signal);
  font-variant-numeric: tabular-nums;
}

.page-about .chapter-aside__text {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.page-about .chapter-aside--quote {
  padding: 20px 18px;
  border-left: 0;
  border-radius: var(--r-lg);
  background: radial-gradient(130% 130% at 0% 0%, rgba(71, 245, 176, 0.18), transparent 62%), var(--panel);
}

.page-about .chapter-aside__quote {
  margin: 0;
  font-family: var(--display);
  font-size: 18px;
  line-height: 1.5;
  color: var(--text);
}

/* 图片 */
.page-about .about-figure {
  margin: 26px 0 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: linear-gradient(160deg, var(--panel), var(--ink-2));
  border: 1px solid var(--line-soft);
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.75) brightness(0.9);
}

.page-about .about-figure figcaption {
  padding: 12px 16px;
  font-size: 11px;
  line-height: 1.6;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-about .about-figure--aside {
  margin-top: 0;
}

.page-about .about-figure--panorama {
  margin-top: 32px;
}

/* 一天的节奏 */
.page-about .pace {
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
}

.page-about .pace__item {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-top: 1px dashed rgba(234, 243, 239, 0.14);
}

.page-about .pace__time {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--signal);
  font-variant-numeric: tabular-nums;
}

.page-about .pace__what {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
}

/* 生产流程 */
.page-about .pipeline {
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(0, 1fr);
}

.page-about .pipeline__item {
  padding: 20px 18px;
  border-radius: var(--r-md);
  background: var(--ink-2);
  border: 1px solid var(--line-soft);
  transition: transform 320ms var(--ease), border-color 320ms var(--ease);
}

.page-about .pipeline__item:hover {
  transform: translateY(-3px);
  border-color: rgba(71, 245, 176, 0.4);
}

.page-about .pipeline__n {
  display: block;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: rgba(71, 245, 176, 0.75);
}

.page-about .pipeline__title {
  margin: 8px 0 8px;
  font-family: var(--display);
  font-size: 19px;
  font-weight: 700;
  color: var(--text);
}

.page-about .pipeline__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* 纸白区块：团队 */
.page-about .about-paper {
  padding: 28px 20px;
  border-radius: var(--r-lg);
  background: var(--paper);
  color: var(--ink-2);
}

.page-about .about-paper .chapter-head {
  border-top-color: rgba(12, 31, 25, 0.16);
}

.page-about .about-paper .chapter-num {
  color: rgba(15, 169, 123, 0.28);
}

@supports (-webkit-text-stroke: 1px #fff) {
  .page-about .about-paper .chapter-num {
    color: transparent;
    -webkit-text-stroke: 1px rgba(15, 169, 123, 0.5);
  }
}

.page-about .about-paper .chapter-title {
  color: var(--ink);
}

.page-about .about-paper .chapter-lede {
  color: #29463D;
}

.page-about .crew {
  display: grid;
  gap: 12px;
  grid-template-columns: minmax(0, 1fr);
  margin-top: 22px;
}

.page-about .crew__item {
  padding: 20px 18px;
  border-radius: var(--r-md);
  background: #E6EEEA;
  border: 1px solid rgba(12, 31, 25, 0.1);
}

.page-about .crew__num {
  display: block;
  font-size: 40px;
  line-height: 1;
  color: #0B6E52;
  font-variant-numeric: tabular-nums;
}

.page-about .crew__role {
  margin: 10px 0 8px;
  font-family: var(--display);
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
}

.page-about .crew__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: #33534A;
}

.page-about .crew__more {
  margin-top: 12px;
  border-top: 1px solid rgba(12, 31, 25, 0.12);
  padding-top: 10px;
}

.page-about .crew__more summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: #0B6E52;
}

.page-about .crew__more summary::-webkit-details-marker {
  display: none;
}

.page-about .crew__more summary::after {
  content: "+";
  font-family: var(--mono);
  font-size: 14px;
  transition: transform 180ms var(--ease);
}

.page-about .crew__more[open] summary::after {
  transform: rotate(45deg);
}

.page-about .crew__more p {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: #33534A;
}

/* 时间轴 */
.page-about .timeline {
  position: relative;
  margin: 0;
  padding: 0 0 0 22px;
  list-style: none;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(180deg, var(--neon), rgba(71, 245, 176, 0));
}

.page-about .timeline__item {
  position: relative;
  margin-bottom: 12px;
}

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: -21px;
  top: 16px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ink);
  border: 1px solid var(--neon);
}

.page-about .timeline__node summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  padding: 10px 14px;
  border-radius: var(--r-sm);
  background: var(--ink-2);
  border: 1px solid var(--line-soft);
  transition: background 200ms var(--ease), border-color 200ms var(--ease);
}

.page-about .timeline__node summary::-webkit-details-marker {
  display: none;
}

.page-about .timeline__node summary:hover,
.page-about .timeline__node summary:focus-visible {
  background: var(--panel);
  border-color: rgba(71, 245, 176, 0.45);
}

.page-about .timeline__node[open] summary {
  background: var(--panel);
  border-color: rgba(71, 245, 176, 0.45);
}

.page-about .timeline__stage {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--signal);
}

.page-about .timeline__title {
  font-family: var(--display);
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
}

.page-about .timeline__text {
  margin: 10px 0 0;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

/* 合作生态 */
.page-about .partner-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 26px;
}

.page-about .partner {
  padding: 18px 16px;
  border-radius: var(--r-md);
  background: linear-gradient(150deg, var(--panel), var(--ink-2));
  border: 1px solid var(--line-soft);
}

.page-about .partner__n {
  margin: 0;
  font-size: clamp(26px, 3.6vw, 34px);
  line-height: 1;
  color: var(--neon);
  font-variant-numeric: tabular-nums;
}

.page-about .partner__t {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--muted);
}

/* 纠错与回信 */
.page-about .assure {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
}

.page-about .assure__item {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-top: 1px dashed rgba(234, 243, 239, 0.14);
}

.page-about .assure__k {
  font-size: 15px;
  letter-spacing: 0.02em;
  color: var(--neon);
  font-variant-numeric: tabular-nums;
}

.page-about .assure__v {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
}

/* 结尾行动区 */
.page-about .about-cta {
  display: grid;
  gap: 22px;
  margin-top: 12px;
  padding: 28px 22px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: radial-gradient(120% 140% at 100% 0%, rgba(71, 245, 176, 0.14), transparent 62%), var(--ink-2);
}

.page-about .about-cta__title {
  margin: 0 0 12px;
  font-family: var(--display);
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 700;
  line-height: 1.15;
  color: var(--text);
}

.page-about .about-cta__text p {
  margin: 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

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

/* 断点 */
@media (min-width: 600px) {
  .page-about .pipeline {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-about .pace__item {
    grid-template-columns: 140px minmax(0, 1fr);
    align-items: baseline;
    gap: 18px;
  }

  .page-about .assure__item {
    grid-template-columns: 140px minmax(0, 1fr);
    align-items: baseline;
    gap: 18px;
  }
}

@media (min-width: 720px) {
  .page-about .about-figures {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-about .about-paper {
    padding: 40px 34px;
  }
}

@media (min-width: 860px) {
  .page-about .chapter-body--aside {
    grid-template-columns: minmax(0, 1fr) 230px;
    align-items: start;
    gap: 32px;
  }

  .page-about .chapter-aside {
    margin-top: 6px;
  }

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

  .page-about .about-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    padding: 42px 38px;
  }
}

@media (min-width: 980px) {
  .page-about .about-wrap {
    padding-top: 44px;
  }

  .page-about .about-layout {
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 52px;
  }

  .page-about .about-index {
    position: sticky;
    top: 96px;
    align-self: start;
  }

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

  .page-about .about-index__link {
    padding: 9px 0 9px 12px;
    border: 0;
    border-left: 1px solid var(--line-soft);
    border-radius: 0;
    white-space: normal;
  }

  .page-about .about-index__link:hover,
  .page-about .about-index__link:focus-visible {
    border-left-color: var(--neon);
  }

  .page-about .about-chapter {
    margin-bottom: 104px;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-about .pipeline__item,
  .page-about .crew__more summary::after,
  .page-about .timeline__node summary,
  .page-about .about-index__link {
    transition: none;
  }

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