.page-about {
  --ab-rail: 208px;
  background: var(--ly-deep);
  color: var(--ly-cream);
  font-family: var(--ly-font-body);
}

.page-about [id] {
  scroll-margin-top: 6rem;
}

.page-about .about-shell {
  width: min(100% - 2 * var(--ly-gutter), var(--ly-shell));
  margin-inline: auto;
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(1.25rem, 3vw, 2rem) clamp(2.5rem, 6vw, 4.5rem);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(92% 120% at 94% -20%, rgba(50, 242, 208, 0.16), transparent 58%),
    radial-gradient(70% 90% at -8% 110%, rgba(255, 107, 74, 0.12), transparent 62%);
}

.page-about .about-hero > .about-shell {
  position: relative;
}

.page-about .about-crumb {
  margin-bottom: clamp(1.5rem, 4vw, 2.5rem);
}

.page-about .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.8125rem;
}

.page-about .breadcrumb__link {
  color: var(--ly-mist);
  text-decoration: none;
}

.page-about .breadcrumb__link:hover {
  color: var(--ly-mint);
}

.page-about .breadcrumb__current {
  color: var(--ly-cream);
}

.page-about .about-kicker {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.7rem;
  margin: 0 0 1rem;
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ly-mist);
}

.page-about .about-kicker .mono {
  color: var(--ly-amber);
}

.page-about .about-hero__title {
  margin: 0;
  font-family: var(--ly-font-body);
  font-weight: 800;
  font-size: clamp(2rem, 6.2vw, 3.6rem);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--ly-cream);
}

.page-about .about-hero__lede {
  margin: clamp(1rem, 2.5vw, 1.5rem) 0 0;
  max-width: 48ch;
  font-size: clamp(1rem, 1.4vw, 1.125rem);
  line-height: 1.8;
  color: rgba(244, 235, 221, 0.82);
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(2rem, 5vw, 3rem) 0 0;
  background: var(--ly-hairline);
  border: 1px solid var(--ly-hairline);
  border-radius: var(--ly-radius);
  overflow: hidden;
}

.page-about .about-fact {
  padding: 1rem 1.05rem 1.15rem;
  background: rgba(7, 38, 63, 0.88);
}

.page-about .about-fact dt {
  margin-bottom: 0.4rem;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--ly-mist);
}

.page-about .about-fact dd {
  margin: 0;
  font-family: var(--ly-font-display);
  font-size: clamp(1.5rem, 3.2vw, 2rem);
  font-weight: 600;
  line-height: 1;
  color: var(--ly-mint);
  font-variant-numeric: tabular-nums;
}

.page-about .about-fact dd small {
  margin-left: 0.15em;
  font-family: var(--ly-font-body);
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--ly-mist);
}

/* ---------- 奶油纸正文区 ---------- */

.page-about .about-paper {
  padding-block: clamp(2.5rem, 6vw, 5rem) clamp(3rem, 7vw, 6rem);
  background: var(--ly-cream);
  color: var(--ly-ink);
}

.page-about .about-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.25rem, 4vw, 3rem);
  align-items: start;
}

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

/* ---------- 侧栏目录 ---------- */

.page-about .about-rail {
  font-size: 0.875rem;
}

.page-about .about-rail__title {
  margin: 0 0 0.6rem;
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(28, 23, 20, 0.48);
}

.page-about .about-rail__sections,
.page-about .about-rail__years {
  list-style: none;
  margin: 0 0 1.25rem;
  padding: 0;
}

.page-about .about-rail__sections a {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.35rem 0;
  color: rgba(28, 23, 20, 0.72);
  text-decoration: none;
  transition: color 0.2s var(--ly-ease);
}

.page-about .about-rail__sections .mono {
  font-size: 0.75rem;
  color: rgba(28, 23, 20, 0.38);
}

.page-about .about-rail__sections a:hover {
  color: var(--ly-ink-link);
}

.page-about .about-rail__years {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.page-about .about-rail__years a {
  display: block;
  padding: 0.2rem 0.55rem;
  border: 1px solid var(--ly-line-ink);
  border-radius: 999px;
  font-family: var(--ly-font-mono);
  font-size: 0.75rem;
  color: rgba(28, 23, 20, 0.7);
  text-decoration: none;
  transition: border-color 0.2s var(--ly-ease), color 0.2s var(--ly-ease);
}

.page-about .about-rail__years a:hover {
  border-color: var(--ly-coral);
  color: var(--ly-coral);
}

@media (max-width: 899px) {
  .page-about .about-rail {
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--ly-line-ink);
  }

  .page-about .about-rail__title {
    display: none;
  }

  .page-about .about-rail__sections {
    display: flex;
    gap: 0.5rem;
    margin: 0;
    padding: 0 0 0.25rem;
    overflow-x: auto;
    scrollbar-width: thin;
  }

  .page-about .about-rail__sections a {
    padding: 0.4rem 0.8rem;
    border: 1px solid var(--ly-line-ink);
    border-radius: 999px;
    font-size: 0.8125rem;
    white-space: nowrap;
  }
}

@media (min-width: 900px) {
  .page-about .about-layout {
    grid-template-columns: var(--ab-rail) minmax(0, 1fr);
  }

  .page-about .about-rail {
    position: sticky;
    top: 5.5rem;
    max-height: calc(100vh - 7rem);
    padding-right: 1.25rem;
    overflow-y: auto;
    border-right: 1px solid var(--ly-line-ink);
  }

  .page-about .about-rail__sections a,
  .page-about .about-rail__years a {
    font-size: 0.875rem;
  }

  .page-about .about-rail__sections a {
    margin-left: -0.7rem;
    padding-left: 0.7rem;
    border-left: 2px solid transparent;
    transition: color 0.2s var(--ly-ease), border-left-color 0.2s var(--ly-ease);
  }

  .page-about .about-rail__sections a:hover {
    border-left-color: var(--ly-mint);
  }

  .page-about .about-rail__years a {
    font-size: 0.75rem;
  }
}

/* ---------- 章节骨架 ---------- */

.page-about .about-sec + .about-sec {
  margin-top: clamp(3rem, 7vw, 5rem);
  padding-top: clamp(1.5rem, 4vw, 2.5rem);
  border-top: 1px solid var(--ly-line-ink);
}

.page-about .about-sec__kicker {
  margin: 0 0 0.6rem;
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--ly-ink-link);
}

.page-about .about-sec__title {
  margin: 0 0 1.1rem;
  font-family: var(--ly-font-body);
  font-weight: 800;
  font-size: clamp(1.5rem, 3.4vw, 2.125rem);
  line-height: 1.25;
  letter-spacing: -0.005em;
  color: var(--ly-ink);
}

.page-about .about-flow p:not([class]) {
  margin: 0 0 1.1rem;
  max-width: 68ch;
  font-size: 1rem;
  line-height: 1.85;
  color: rgba(28, 23, 20, 0.84);
}

.page-about .about-flow a:not([class]) {
  color: var(--ly-ink-link);
  text-decoration: underline;
  text-decoration-color: rgba(11, 79, 99, 0.35);
  text-underline-offset: 3px;
}

.page-about .about-sub {
  margin: clamp(2rem, 5vw, 2.75rem) 0 0;
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--ly-ink);
}

/* ---------- 图片 ---------- */

.page-about .about-figure {
  margin: clamp(1.5rem, 4vw, 2.25rem) 0;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--ly-line-ink);
  border-radius: var(--ly-radius);
  object-fit: cover;
  background: var(--ly-navy);
}

.page-about .about-figure figcaption {
  margin-top: 0.7rem;
  max-width: 62ch;
  font-size: 0.8125rem;
  line-height: 1.65;
  color: rgba(28, 23, 20, 0.56);
}

/* ---------- 注脚框 ---------- */

.page-about .about-note {
  margin: clamp(1.25rem, 3vw, 2rem) 0 0;
  max-width: 62ch;
  padding: 1rem 1.15rem;
  background: var(--ly-mint-wash);
  border-left: 2px solid #17b79b;
  border-radius: 0 var(--ly-radius) var(--ly-radius) 0;
}

.page-about .about-note__t {
  margin: 0 0 0.35rem;
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #0f7f6d;
}

.page-about .about-note p:not([class]) {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: rgba(28, 23, 20, 0.78);
}

/* ---------- 三个维度 ---------- */

.page-about .about-dims {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin: clamp(1.25rem, 3vw, 2rem) 0;
  padding: 0;
  list-style: none;
}

.page-about .about-dim {
  padding-top: 0.9rem;
  border-top: 1px solid rgba(28, 23, 20, 0.4);
}

.page-about .about-dim__k {
  margin: 0 0 0.45rem;
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  color: var(--ly-ink-link);
}

.page-about .about-dim__t {
  margin: 0 0 0.4rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--ly-ink);
}

.page-about .about-dim p:not([class]) {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.72;
  color: rgba(28, 23, 20, 0.68);
}

/* ---------- 三段时间轴 ---------- */

.page-about .about-timeline {
  display: grid;
  gap: 1.35rem;
  margin: 1.25rem 0 1.5rem;
  padding: 0 0 0 1.25rem;
  border-left: 1px solid rgba(28, 23, 20, 0.18);
  list-style: none;
}

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

.page-about .about-tl::before {
  content: "";
  position: absolute;
  top: 0.5rem;
  left: -1.25rem;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #17b79b;
  box-shadow: 0 0 0 3px var(--ly-cream);
  transform: translateX(-50%);
}

.page-about .about-tl__k {
  margin: 0 0 0.2rem;
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  color: var(--ly-ink-link);
}

.page-about .about-tl__v {
  margin: 0 0 0.35rem;
  font-family: var(--ly-font-display);
  font-size: 1.375rem;
  font-weight: 600;
  line-height: 1.1;
  color: var(--ly-coral);
  font-variant-numeric: tabular-nums;
}

.page-about .about-tl__d {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.72;
  color: rgba(28, 23, 20, 0.68);
}

/* ---------- 团队角色 ---------- */

.page-about .about-team {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.875rem;
  margin: clamp(1.25rem, 3vw, 2rem) 0;
  padding: 0;
  list-style: none;
}

.page-about .about-role {
  padding: 1.15rem 1.25rem;
  border: 1px solid var(--ly-line-ink);
  border-radius: var(--ly-radius);
  background: rgba(255, 255, 255, 0.5);
}

.page-about .about-role--wide {
  background: var(--ly-navy);
  border-color: var(--ly-hairline-strong);
}

.page-about .about-role__n {
  margin: 0 0 0.3rem;
  font-family: var(--ly-font-display);
  font-size: clamp(1.9rem, 4vw, 2.5rem);
  font-weight: 600;
  line-height: 1;
  color: var(--ly-coral);
  font-variant-numeric: tabular-nums;
}

.page-about .about-role--wide .about-role__n {
  color: var(--ly-mint);
}

.page-about .about-role__t {
  margin: 0 0 0.4rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--ly-ink);
}

.page-about .about-role--wide .about-role__t {
  color: var(--ly-cream);
}

.page-about .about-role__d {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.72;
  color: rgba(28, 23, 20, 0.72);
}

.page-about .about-role--wide .about-role__d {
  color: rgba(244, 235, 221, 0.78);
}

/* ---------- 里程碑 ---------- */

.page-about .about-miles {
  margin-top: clamp(1.25rem, 3vw, 2rem);
  padding: clamp(1.25rem, 3vw, 2rem);
  border: 1px solid var(--ly-hairline);
  border-radius: var(--ly-radius);
  background: linear-gradient(155deg, var(--ly-deep) 0%, var(--ly-navy) 100%);
  color: var(--ly-cream);
}

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

.page-about .about-mile {
  display: grid;
  grid-template-columns: 4.25rem minmax(0, 1fr);
  gap: 1rem;
  padding: 0.9rem 0;
  border-top: 1px solid var(--ly-hairline);
}

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

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

.page-about .about-mile__y {
  padding-top: 0.12rem;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--ly-amber);
  transition: color 0.2s var(--ly-ease);
}

.page-about .about-mile__b h3 {
  margin: 0 0 0.3rem;
  font-size: 0.9688rem;
  font-weight: 700;
  color: var(--ly-cream);
  transition: color 0.2s var(--ly-ease);
}

.page-about .about-mile__b p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.7;
  color: rgba(244, 235, 221, 0.72);
}

@media (hover: hover) {
  .page-about .about-mile:hover .about-mile__y {
    color: var(--ly-coral);
  }

  .page-about .about-mile:hover .about-mile__b h3 {
    color: var(--ly-mint);
  }
}

/* ---------- 运营规模 ---------- */

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(1.25rem, 3vw, 2rem) 0;
  background: var(--ly-line-ink);
  border: 1px solid var(--ly-line-ink);
  border-radius: var(--ly-radius);
  overflow: hidden;
}

.page-about .about-stat {
  padding: 1.05rem 1rem 1.15rem;
  background: var(--ly-cream);
}

.page-about .about-stat__n {
  margin: 0 0 0.25rem;
  font-family: var(--ly-font-display);
  font-size: clamp(1.65rem, 3.6vw, 2.1rem);
  font-weight: 600;
  line-height: 1;
  color: var(--ly-ink);
  font-variant-numeric: tabular-nums;
}

.page-about .about-stat__n small {
  margin-left: 0.1em;
  font-family: var(--ly-font-body);
  font-size: 0.75rem;
  font-weight: 400;
  color: rgba(28, 23, 20, 0.6);
}

.page-about .about-stat__l {
  margin: 0;
  font-size: 0.8125rem;
  color: rgba(28, 23, 20, 0.6);
}

/* ---------- 你能得到什么 ---------- */

.page-about .about-gains {
  display: grid;
  gap: 0;
  margin: clamp(1.25rem, 3vw, 2rem) 0;
  padding: 0;
  list-style: none;
}

.page-about .about-gain {
  display: grid;
  grid-template-columns: 2.1rem minmax(0, 1fr);
  gap: 0.9rem;
  padding: 1.05rem 0;
  border-top: 1px solid var(--ly-line-ink);
}

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

.page-about .about-gain__i {
  padding-top: 0.15rem;
  font-size: 0.8125rem;
  color: var(--ly-coral);
}

.page-about .about-gain h3 {
  margin: 0 0 0.25rem;
  font-size: 0.9688rem;
  font-weight: 700;
  color: var(--ly-ink);
}

.page-about .about-gain p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.72;
  color: rgba(28, 23, 20, 0.72);
}

/* ---------- 行动区 ---------- */

.page-about .about-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: clamp(1.75rem, 4vw, 2.5rem);
  padding: clamp(1.25rem, 3vw, 2rem);
  border-radius: var(--ly-radius);
  background: var(--ly-deep);
  color: var(--ly-cream);
}

.page-about .about-cta__t {
  margin: 0;
  max-width: 42ch;
  font-size: 0.9688rem;
  line-height: 1.7;
  color: rgba(244, 235, 221, 0.84);
}

.page-about .about-cta__links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.9rem;
}

.page-about .about-cta__link {
  padding-bottom: 0.1rem;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--ly-mint);
  text-decoration: none;
  border-bottom: 1px solid rgba(50, 242, 208, 0.35);
  transition: border-bottom-color 0.2s var(--ly-ease);
}

.page-about .about-cta__link:hover {
  border-bottom-color: var(--ly-mint);
}

/* ---------- 响应式网格 ---------- */

@media (min-width: 640px) {
  .page-about .about-dims {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.25rem;
  }
}

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

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

@media (min-width: 760px) {
  .page-about .about-timeline {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.5rem;
    padding: 1.4rem 0 0;
    border-left: 0;
    border-top: 1px solid rgba(28, 23, 20, 0.18);
  }

  .page-about .about-tl::before {
    top: -1.4rem;
    left: 0;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 0 3px var(--ly-cream);
  }

  .page-about .about-team {
    grid-template-columns: 1.35fr 1fr;
    grid-template-rows: auto auto;
  }

  .page-about .about-role--wide {
    grid-row: span 2;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }
}
<<<END>>>