.page-about {
  --about-year: clamp(42px, 8.6vw, 88px);
  --about-rule: rgba(168, 160, 190, 0.22);
  --about-body: rgba(247, 244, 238, 0.8);
  background: var(--plum);
  color: var(--ice);
  font-family: var(--font-cn);
  overflow-x: hidden;
}

.page-about .container {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: 20px;
}

.page-about .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--neon);
}

.page-about .title {
  margin: 12px 0 0;
  font-size: clamp(24px, 5.4vw, 40px);
  line-height: 1.22;
  letter-spacing: -0.015em;
  font-weight: 800;
  color: var(--ice);
}

.page-about .h3 {
  margin: 0 0 10px;
  font-size: 19px;
  line-height: 1.45;
  font-weight: 700;
  color: var(--ice);
}

.page-about .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.page-about .inline-link {
  color: var(--neon);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

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

.page-about p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--about-body);
}

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

.page-about .vertical-note {
  display: none;
  margin: 22px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.32em;
  color: var(--mist);
}

/* ---------- 面包屑 ---------- */
.page-about__crumbs {
  padding-top: 18px;
}

.page-about .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-about .breadcrumbs__item + .breadcrumbs__item::before {
  content: "/";
  margin-right: 8px;
  color: var(--steel);
}

.page-about .breadcrumbs__item a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

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

/* ---------- 首屏 ---------- */
.about-hero__grid {
  display: grid;
  gap: 34px;
  padding-block: 30px 40px;
  align-items: center;
}

.about-hero h1 {
  margin: 16px 0 20px;
  font-size: clamp(32px, 8vw, 74px);
  line-height: 1.08;
  letter-spacing: -0.025em;
  font-weight: 900;
  color: var(--ice);
}

.about-hero__intro {
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.9;
  color: var(--about-body);
}

.about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.about-hero__figure {
  position: relative;
  margin: 0;
}

.about-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--hair);
  object-fit: cover;
  filter: saturate(0.85) contrast(1.05);
}

.about-hero__figure::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 56px;
  height: 2px;
  background: var(--saffron);
}

.page-about .media-frame__cap {
  display: block;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.about-strip {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0 0 8px;
  background: var(--about-rule);
  border-top: 1px solid var(--about-rule);
  border-bottom: 1px solid var(--about-rule);
}

.about-strip__cell {
  background: var(--plum-deep);
  padding: 16px 14px;
}

.about-strip dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.about-strip dd {
  margin: 8px 0 0;
  font-size: 26px;
  line-height: 1;
  color: var(--neon);
}

/* ---------- 通用章节 ---------- */
.about-section {
  padding-block: 60px;
  border-top: 1px solid var(--about-rule);
}

/* ---------- 起点 ---------- */
.about-origin__grid {
  display: grid;
  gap: 26px;
}

.about-origin__body p {
  font-size: 16px;
  line-height: 1.9;
}

/* ---------- 时间线 ---------- */
.about-timeline__head {
  max-width: 58ch;
  margin-bottom: 34px;
}

.about-timeline__note {
  margin-top: 14px;
  font-size: 14px;
  color: var(--mist);
}

.about-timeline__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.tl-item {
  position: relative;
  display: grid;
  gap: 8px;
  padding-block: 26px;
  border-top: 1px solid var(--about-rule);
}

.tl-item::before {
  content: "";
  position: absolute;
  top: -4px;
  left: 0;
  width: 7px;
  height: 7px;
  background: var(--saffron);
  transform: rotate(45deg);
}

.tl-item--now::before {
  background: var(--neon);
}

.tl-year .num {
  display: block;
  font-size: var(--about-year);
  font-weight: 700;
  line-height: 0.92;
  letter-spacing: -0.04em;
  color: transparent;
  -webkit-text-stroke: 1px var(--hair-strong);
}

.tl-item--now .tl-year .num {
  color: var(--neon);
  -webkit-text-stroke: 0;
}

.tl-body p {
  font-size: 15px;
  line-height: 1.85;
  margin: 0;
}

.page-about .tag-cut {
  display: inline-block;
  margin-top: 14px;
  padding: 5px 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--ice);
  background: var(--saffron);
  clip-path: polygon(9px 0, 100% 0, calc(100% - 9px) 100%, 0 100%);
}

.tl-item--now .tag-cut {
  background: var(--neon);
  color: var(--indigo);
}

.about-timeline__texture {
  margin: 44px 0 0;
  max-width: 420px;
}

.about-timeline__texture img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--hair);
  object-fit: cover;
}

/* ---------- 团队 ---------- */
.about-team__grid {
  display: grid;
  gap: 30px;
}

.about-team__figure {
  margin: 0;
}

.about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--hair);
  object-fit: cover;
  filter: saturate(0.8) contrast(1.05);
}

.about-team__body p {
  font-size: 16px;
  line-height: 1.9;
}

.about-team__list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--about-rule);
  border: 1px solid var(--about-rule);
}

.about-team__list li {
  display: grid;
  gap: 5px;
  padding: 15px 17px;
  background: var(--plum-deep);
}

.about-team__list strong {
  font-size: 15px;
  font-weight: 700;
  color: var(--ice);
}

.about-team__list span {
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 浏览路径 ---------- */
.about-path__head {
  max-width: 56ch;
  margin-bottom: 30px;
}

.about-path__intro {
  margin-top: 14px;
  font-size: 15px;
  color: var(--about-body);
}

.about-path__line {
  display: none;
  width: 100%;
  height: 70px;
  margin-bottom: 14px;
}

.about-path__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.path-step {
  position: relative;
  padding: 22px 18px 20px;
  border: 1px solid var(--about-rule);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(60, 51, 85, 0.62), rgba(29, 18, 48, 0.42));
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease);
}

.path-step::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 18px;
  width: 36px;
  height: 2px;
  background: var(--neon);
}

.path-step:hover {
  transform: translateY(-4px);
  border-color: var(--hair-strong);
}

.path-step__idx {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--neon);
}

.path-step .h3 {
  margin: 10px 0 8px;
  font-size: 17px;
}

.path-step p {
  font-size: 14px;
  line-height: 1.8;
  margin: 0 0 14px;
  color: var(--about-body);
}

.path-step .inline-link {
  font-size: 13px;
  font-family: var(--font-mono);
}

/* ---------- 联络 ---------- */
.about-reach {
  padding-block: 60px;
  background: var(--sand);
  color: var(--indigo);
  border-top: 1px solid var(--about-rule);
}

.about-reach__grid {
  display: grid;
  gap: 30px;
}

.about-reach .eyebrow {
  color: var(--indigo);
  display: inline-block;
  padding-left: 14px;
  border-left: 3px solid var(--saffron);
}

.about-reach .title {
  color: var(--indigo);
}

.about-reach p {
  color: #2c2438;
}

.about-reach__list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  border-top: 1px solid rgba(16, 24, 38, 0.18);
}

.about-reach__list li {
  display: grid;
  gap: 4px;
  padding: 13px 0;
  border-bottom: 1px solid rgba(16, 24, 38, 0.14);
}

.about-reach__list b {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  font-weight: 500;
  color: var(--saffron);
}

.about-reach__list span {
  font-size: 15px;
  line-height: 1.7;
  color: #1c1728;
  word-break: break-word;
}

.about-reach__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-top: 26px;
}

.about-reach__link {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--indigo);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.about-reach__link:hover,
.about-reach__link:focus-visible {
  color: var(--saffron);
}

.about-reach__aside {
  padding: 24px 20px;
  background: var(--indigo);
  border-radius: var(--radius);
  border-left: 2px solid var(--neon);
}

.about-reach__aside-title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--neon);
}

.about-reach .about-reach__aside-time {
  margin: 0 0 16px;
  font-size: 19px;
  line-height: 1.4;
  color: var(--ice);
}

.about-reach .about-reach__aside-text {
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.about-reach .about-reach__aside-text + .about-reach__aside-text {
  margin-top: 12px;
}

/* ---------- 显现 ---------- */
@keyframes aboutIn {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.page-about [data-reveal].is-in {
  animation: aboutIn 0.5s var(--ease) both;
}

@media (prefers-reduced-motion: reduce) {
  .page-about [data-reveal].is-in {
    animation: none;
  }
  .path-step:hover {
    transform: none;
  }
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 640px) {
  .page-about .container {
    padding-inline: 32px;
  }

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

  .about-strip dd {
    font-size: 30px;
  }

  .page-about .vertical-note {
    display: inline-block;
    writing-mode: vertical-rl;
    letter-spacing: 0.42em;
  }

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

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-about__crumbs {
    padding-top: 24px;
  }

  .about-hero__grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 40px;
    padding-block: 56px 72px;
    align-items: end;
  }

  .about-hero__lead {
    grid-column: 1 / 8;
  }

  .about-hero__figure {
    grid-column: 8 / 13;
    transform: translateY(22px);
  }

  .about-section {
    padding-block: 88px;
  }

  .about-origin__grid {
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
    gap: 56px;
  }

  .about-origin__head {
    position: sticky;
    top: calc(var(--bar-h) + 28px);
    align-self: start;
  }

  .about-timeline__list {
    border-bottom: 1px solid var(--about-rule);
  }

  .tl-item {
    grid-template-columns: minmax(160px, 260px) minmax(0, 1fr);
    gap: 52px;
    padding-block: 38px;
  }

  .tl-year {
    text-align: right;
    padding-right: 14px;
  }

  .tl-item::before {
    left: 50%;
    transform: translateX(-50%) rotate(45deg);
  }

  .tl-body {
    padding-top: 4px;
  }

  .about-timeline__texture {
    margin-left: auto;
    margin-right: 0;
    margin-top: -40px;
    max-width: 340px;
  }

  .about-team__grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    gap: 60px;
    align-items: start;
  }

  .about-team__figure {
    position: sticky;
    top: calc(var(--bar-h) + 28px);
  }

  .about-path__line {
    display: block;
  }

  .about-path__steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px;
  }

  .about-reach {
    padding-block: 88px;
  }

  .about-reach__grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr);
    gap: 56px;
    align-items: start;
  }
}

@media (min-width: 1180px) {
  .page-about .container {
    padding-inline: 40px;
  }

  .about-hero__grid {
    padding-block: 68px 92px;
  }

  .tl-item {
    gap: 72px;
  }
}
<<<END>>>