.page-about {
  --about-gap: clamp(20px, 4vw, 48px);
  --about-pad: clamp(48px, 8vw, 104px);
  --about-line: 1px solid var(--line);
  background: var(--ink);
  color: var(--star);
  font-family: var(--font-body);
  overflow-x: clip;
}

.page-about .about-wrap {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-top: clamp(24px, 5vw, 60px);
  padding-bottom: clamp(40px, 6vw, 80px);
}

.page-about .about-hero__grid {
  display: grid;
  gap: var(--about-gap);
  align-items: end;
}

.page-about .about-hero__eyebrow {
  margin-top: clamp(24px, 4vw, 44px);
  color: var(--gold);
}

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(38px, 8.2vw, 88px);
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--ivory);
  margin: 16px 0 0;
}

.page-about .about-hero__title span {
  display: block;
  color: var(--gold);
  margin-top: 4px;
}

@supports ((-webkit-background-clip: text) or (background-clip: text)) {
  .page-about .about-hero__title span {
    background: linear-gradient(96deg, var(--gold) 0%, var(--coral) 58%, var(--mist) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }
}

.page-about .about-hero__intro {
  margin: 22px 0 0;
  max-width: 34ch;
  font-size: 16px;
  line-height: 1.9;
  color: var(--star);
}

.page-about .about-hero__facts {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 16px 36px;
  margin: 32px 0 0;
  padding: 20px 0 0;
  border-top: var(--about-line);
}

.page-about .about-hero__facts li {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .about-fact__num {
  font-family: var(--font-mono);
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1;
  color: var(--gold);
  letter-spacing: 0.02em;
}

.page-about .about-fact__unit {
  font-size: 0.5em;
  margin-left: 2px;
  color: var(--mist);
}

.page-about .about-fact__label {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--star);
}

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

.page-about .about-hero__frame {
  border: var(--about-line);
  padding: 10px;
  background: linear-gradient(152deg, rgba(167, 139, 218, 0.26), rgba(10, 15, 44, 0.92));
}

.page-about .about-hero__frame img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1400 / 900;
  object-fit: cover;
}

.page-about .about-hero__vertical {
  position: absolute;
  top: 22px;
  left: 22px;
  writing-mode: vertical-rl;
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.32em;
  color: var(--gold);
  background: rgba(10, 15, 44, 0.62);
  border-left: 1px solid var(--gold);
  padding: 14px 7px;
}

.page-about .about-hero__caption {
  margin-top: 10px;
  text-align: right;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--star);
}

/* ---------- 章节标题件 ---------- */
.page-about .about-sec-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 16px;
  border-bottom: var(--about-line);
}

.page-about .about-sec-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--gold);
  flex: none;
}

.page-about .about-sec-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(24px, 3.6vw, 38px);
  line-height: 1.2;
  letter-spacing: 0.01em;
  color: var(--ivory);
}

/* ---------- 01 缘起 ---------- */
.page-about .about-origin {
  padding-bottom: var(--about-pad);
}

.page-about .about-origin__grid {
  display: grid;
  gap: var(--about-gap);
}

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

.page-about .about-origin__body p {
  max-width: 34ch;
  margin: 0 0 1.2em;
  font-size: 16px;
  line-height: 1.95;
  color: var(--star);
}

.page-about .about-origin__body p:first-child::first-letter {
  float: left;
  font-family: var(--font-display);
  font-size: 3.1em;
  line-height: 0.9;
  padding-right: 10px;
  color: var(--gold);
}

.page-about .about-aside {
  border: var(--about-line);
  padding: clamp(22px, 3vw, 32px);
  background: linear-gradient(162deg, rgba(167, 139, 218, 0.16), rgba(18, 26, 69, 0.72) 58%, rgba(10, 15, 44, 0.94));
}

.page-about .about-aside__label {
  margin: 0 0 18px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--coral);
}

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

.page-about .about-ask__item {
  position: relative;
  padding-left: 18px;
  font-family: var(--font-display);
  font-size: 17px;
  line-height: 1.65;
  color: var(--ivory);
}

.page-about .about-ask__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 8px;
  height: 1px;
  background: var(--gold);
}

.page-about .about-aside__foot {
  margin: 22px 0 0;
  padding-top: 16px;
  border-top: var(--about-line);
  font-size: 13px;
  line-height: 1.75;
  color: var(--star);
}

/* ---------- 过渡图文 ---------- */
.page-about .about-plate {
  padding-bottom: var(--about-pad);
}

.page-about .about-plate__grid {
  display: grid;
  gap: var(--about-gap);
  align-items: center;
}

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

.page-about .about-plate__frame {
  border: var(--about-line);
  padding: 10px;
  background: rgba(18, 26, 69, 0.55);
}

.page-about .about-plate__frame img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 520px;
  object-fit: cover;
}

.page-about .about-plate__quote {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-size: clamp(21px, 3vw, 31px);
  line-height: 1.6;
  color: var(--ivory);
}

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

.page-about .about-plate__note {
  max-width: 36ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--star);
}

/* ---------- 02 六格 ---------- */
.page-about .about-map {
  padding-block: var(--about-pad);
  background: linear-gradient(180deg, rgba(18, 26, 69, 0) 0%, rgba(167, 139, 218, 0.08) 46%, rgba(18, 26, 69, 0) 100%);
}

.page-about .about-map__intro {
  max-width: 42ch;
  margin: 24px 0 32px;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--star);
}

.page-about .about-map__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about .about-cell {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(20px, 3vw, 32px) clamp(18px, 2.6vw, 28px);
  background: var(--panel);
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 0 100%);
  transition: background var(--dur) var(--ease);
}

.page-about .about-cell:hover {
  background: #16204F;
}

.page-about .about-cell__no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--gold);
}

.page-about .about-cell__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 20px;
  line-height: 1.3;
  color: var(--ivory);
}

.page-about .about-cell__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--star);
}

.page-about .about-cell__link {
  margin-top: auto;
  padding-top: 14px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--gold);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

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

/* ---------- 03 时间线 ---------- */
.page-about .about-time {
  padding-block: var(--about-pad);
  border-top: var(--about-line);
}

.page-about .about-time__grid {
  display: grid;
  gap: var(--about-gap);
  margin-top: 32px;
}

.page-about .about-time__rail {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 10px;
}

.page-about .about-tick {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--star);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--dur) var(--ease);
}

.page-about .about-tick::before {
  content: "";
  width: 12px;
  height: 1px;
  background: var(--line);
  transition: width var(--dur) var(--ease), background var(--dur) var(--ease);
}

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

.page-about .about-tick:hover::before,
.page-about .about-tick:focus-visible::before {
  width: 22px;
  background: var(--gold);
}

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

.page-about .about-node {
  position: relative;
  padding: 0 0 38px 26px;
  border-left: var(--about-line);
}

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

.page-about .about-node::before {
  content: "";
  position: absolute;
  left: -4.5px;
  top: 8px;
  width: 8px;
  height: 8px;
  background: var(--gold);
}

.page-about .about-node--now::before {
  background: var(--mint);
}

.page-about .about-node__year {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-about .about-node__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 20px;
  line-height: 1.35;
  color: var(--ivory);
}

.page-about .about-node__text {
  max-width: 42ch;
  margin: 0;
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--star);
}

.page-about .about-node__link {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(232, 197, 106, 0.45);
}

.page-about .about-node__link:hover,
.page-about .about-node__link:focus-visible {
  color: var(--coral);
  border-bottom-color: var(--coral);
}

/* ---------- 04 团队 ---------- */
.page-about .about-team {
  padding-block: var(--about-pad);
  border-top: var(--about-line);
}

.page-about .about-team__grid {
  display: grid;
  gap: var(--about-gap);
  align-items: center;
}

.page-about .about-team__lead {
  margin: 24px 0 0;
  max-width: 36ch;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--star);
}

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

.page-about .about-crew li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 16px;
  padding: 14px 18px;
  background: var(--panel);
}

.page-about .about-crew__name {
  min-width: 5.5em;
  font-family: var(--font-display);
  font-size: 16px;
  color: var(--ivory);
}

.page-about .about-crew__desc {
  flex: 1 1 12em;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--star);
}

.page-about .about-team__note {
  margin: 20px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--mist);
  max-width: 36ch;
  font-size: 14px;
  line-height: 1.85;
  color: var(--star);
}

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

.page-about .about-team__frame {
  border: var(--about-line);
  padding: 10px;
  background: linear-gradient(200deg, rgba(240, 114, 78, 0.16), rgba(18, 26, 69, 0.9));
}

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

.page-about .about-team__caption {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--star);
}

/* ---------- 05 回访 ---------- */
.page-about .about-return {
  padding-block: var(--about-pad);
  border-top: var(--about-line);
  background: linear-gradient(180deg, rgba(240, 114, 78, 0.07) 0%, rgba(10, 15, 44, 0) 62%);
}

.page-about .about-return__grid {
  display: grid;
  gap: var(--about-gap);
  margin-top: 30px;
}

.page-about .about-return__body p {
  max-width: 34ch;
  margin: 0 0 1em;
  font-size: 16px;
  line-height: 1.95;
  color: var(--star);
}

.page-about .about-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--about-line);
}

.page-about .about-step {
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: 14px;
  padding: 18px 0;
  border-bottom: var(--about-line);
}

.page-about .about-step__no {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--gold);
  padding-top: 3px;
}

.page-about .about-step__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ivory);
}

.page-about .about-contact {
  margin-top: 36px;
  padding: 22px 24px;
  border: var(--about-line);
  border-left: 3px solid var(--coral);
  background: rgba(18, 26, 69, 0.66);
}

.page-about .about-contact__line {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.95;
  color: var(--star);
}

.page-about .about-contact__link {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(232, 197, 106, 0.45);
}

.page-about .about-contact__link:hover,
.page-about .about-contact__link:focus-visible {
  color: var(--coral);
  border-bottom-color: var(--coral);
}

.page-about .about-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .about-map__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-about .about-hero__title {
    margin-left: calc(var(--gutter) * -1);
  }

  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-about .about-plate__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }

  .page-about .about-time__grid {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
    align-items: start;
  }

  .page-about .about-time__rail {
    position: sticky;
    top: 96px;
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
    border-left: var(--about-line);
  }

  .page-about .about-tick {
    padding: 12px 0 12px 18px;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-about .about-return__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }
}

@media (min-width: 1080px) {
  .page-about .about-map__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1px;
    background: var(--line);
    border: var(--about-line);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-cell,
  .page-about .about-tick,
  .page-about .about-tick::before,
  .page-about .about-cell__link {
    transition: none;
  }
}
<<<END>>>