.page-about {
  --about-rule: rgba(73, 242, 208, .20);
  --about-warm: rgba(245, 184, 92, .32);
  --about-card: rgba(18, 58, 50, .56);
  --about-shadow: 0 20px 46px rgba(2, 12, 10, .55);
}

.page-about .breadcrumb {
  padding: 20px 0 8px;
}

/* ---------- 封面 ---------- */
.page-about .about-cover {
  position: relative;
  padding: 8px 0 var(--sec-gap);
  overflow: hidden;
}

.page-about .about-cover__grid {
  display: grid;
  gap: 30px;
  align-items: end;
}

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

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

.page-about .about-cover__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.2rem, 8.6vw, 4.2rem);
  line-height: 1.1;
  letter-spacing: .07em;
  color: var(--c-paper);
  margin: 14px 0 20px;
  max-width: 14ch;
}

.page-about .about-cover__lead {
  margin: 0 0 26px;
  max-width: 38ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--c-paper);
  opacity: .88;
}

.page-about .about-cover__facts {
  list-style: none;
  margin: 0;
  padding: 18px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 14px 26px;
  border-top: 1px solid var(--about-rule);
}

.page-about .about-cover__fact {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.page-about .about-cover__fact b {
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 800;
  letter-spacing: .04em;
  color: var(--c-amber);
}

.page-about .about-cover__fact span {
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--c-muted);
}

.page-about .about-cover__figure {
  margin: 0;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line-cool);
  border-radius: var(--radius);
  background: var(--c-ink-2);
}

.page-about .about-cover__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.page-about .about-cover__figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(155deg, rgba(2, 12, 10, .10) 15%, rgba(2, 12, 10, .80) 100%);
  pointer-events: none;
}

/* ---------- 章节通用 ---------- */
.page-about .section__num {
  display: inline-block;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--about-rule);
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .34em;
  color: var(--c-cyan);
}

.page-about .section__title {
  margin: 12px 0 16px;
  max-width: 20ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.45rem, 5vw, 2.35rem);
  line-height: 1.28;
  letter-spacing: .05em;
  color: var(--c-paper);
}

.page-about .section__lead {
  margin: 0 0 32px;
  max-width: 44ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-muted);
}

/* ---------- 01 品牌起点 ---------- */
.page-about .about-origin__grid {
  display: grid;
  gap: 26px;
}

.page-about .about-origin__note {
  margin: 0;
  font-size: 12px;
  letter-spacing: .26em;
  color: var(--c-muted);
}

.page-about .about-origin__body p {
  margin: 0 0 16px;
  max-width: 42ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--c-paper);
}

.page-about .about-origin__rules {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-origin__rules li {
  display: grid;
  grid-template-columns: 82px 1fr;
  gap: 12px;
  padding: 14px 0;
  border-top: 1px solid var(--about-rule);
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-paper);
}

.page-about .about-origin__rules b {
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--c-amber);
}

.page-about .about-origin__rules span {
  color: var(--c-paper);
  opacity: .86;
}

/* ---------- 02 时间线 ---------- */
.page-about .about-timeline {
  position: relative;
}

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

.page-about .about-timeline__list {
  list-style: none;
  margin: 0;
  padding: 0 0 0 24px;
  position: relative;
  display: grid;
  gap: 18px;
}

.page-about .about-timeline__list::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(180deg, rgba(73, 242, 208, .75), rgba(245, 184, 92, .55), rgba(255, 62, 138, .45));
}

.page-about .about-timeline__node {
  position: relative;
  padding: 20px 18px 22px;
  background: var(--about-card);
  border: 1px solid var(--about-rule);
  border-left: 2px solid var(--c-cyan);
  border-radius: var(--radius);
  transition: transform var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

.page-about .about-timeline__node::before {
  content: "";
  position: absolute;
  left: -22px;
  top: 26px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--c-ink);
  border: 2px solid var(--c-cyan);
  box-shadow: 0 0 0 4px rgba(73, 242, 208, .12);
}

.page-about .about-timeline__node:hover {
  transform: translateY(-3px);
  border-color: var(--about-warm);
  box-shadow: var(--about-shadow);
}

.page-about .about-timeline__node h3 {
  margin: 12px 0 8px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
  letter-spacing: .05em;
  color: var(--c-paper);
}

.page-about .about-timeline__node p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-paper);
  opacity: .82;
}

/* ---------- 03 团队 ---------- */
.page-about .about-team__grid {
  display: grid;
  gap: 26px;
}

.page-about .about-team__figure {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line-cool);
  border-radius: var(--radius);
  background: var(--c-ink-2);
}

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .about-team__total {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 18px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--about-warm);
}

.page-about .about-team__num {
  font-family: var(--font-display);
  font-size: clamp(2.9rem, 11vw, 4.2rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: .02em;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--c-amber);
}

@supports not ((-webkit-text-stroke: 1px #000)) {
  .page-about .about-team__num {
    color: var(--c-amber);
  }
}

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

.page-about .about-team__roles {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-team__role {
  padding: 18px 18px 20px;
  border-left: 2px solid var(--c-cyan);
  transition: transform var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease);
}

.page-about .about-team__role:hover,
.page-about .about-team__role:focus-within {
  transform: translateY(-2px);
  box-shadow: var(--about-shadow);
}

.page-about .about-team__role-num {
  display: block;
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--c-amber);
}

.page-about .about-team__role h3 {
  margin: 8px 0 6px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 800;
  letter-spacing: .04em;
  color: var(--c-paper);
}

.page-about .about-team__role p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-paper);
  opacity: .82;
}

.page-about .about-team__more {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-muted);
}

.page-about .about-team__more a,
.page-about .about-reach__link a,
.page-about .about-next__text a {
  color: var(--c-cyan-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(168, 255, 240, .45);
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

.page-about .about-team__more a:hover,
.page-about .about-reach__link a:hover,
.page-about .about-next__text a:hover {
  color: var(--c-amber);
  border-color: var(--c-amber);
}

/* ---------- 04 协作生态 ---------- */
.page-about .about-collab__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-about .about-collab__item {
  padding: 20px 18px 22px;
  border: 1px solid var(--about-rule);
  border-radius: var(--radius);
  background: linear-gradient(158deg, rgba(18, 58, 50, .58) 0%, rgba(5, 26, 22, .66) 100%);
  transition: border-color var(--t-fast) var(--ease), transform var(--t-fast) var(--ease);
}

.page-about .about-collab__item:hover {
  transform: translateY(-2px);
  border-color: var(--about-warm);
}

.page-about .about-collab__item b {
  display: block;
  margin: 12px 0 6px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 800;
  letter-spacing: .04em;
  color: var(--c-paper);
}

.page-about .about-collab__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-paper);
  opacity: .8;
}

.page-about .about-collab__item--award {
  background: linear-gradient(158deg, rgba(122, 35, 61, .40) 0%, rgba(5, 26, 22, .72) 78%);
  border-color: rgba(245, 184, 92, .34);
}

/* ---------- 05 访问结构 ---------- */
.page-about .about-reach__stats {
  display: grid;
  gap: 14px;
  margin: 10px 0 26px;
}

.page-about .about-reach__stat {
  padding: 20px 18px;
  border: 1px solid var(--about-warm);
  border-radius: var(--radius);
  background: rgba(2, 12, 10, .48);
}

.page-about .about-reach__stat b {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 8vw, 3.1rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: .04em;
  color: var(--c-cyan);
}

.page-about .about-reach__stat span {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--c-muted);
}

.page-about .about-reach__body p {
  margin: 0 0 16px;
  max-width: 44ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-paper);
  opacity: .86;
}

.page-about .about-reach__link {
  margin-top: 22px;
  font-size: 15px;
}

/* ---------- 06 品牌下一步 ---------- */
.page-about .about-next {
  position: relative;
  overflow: hidden;
}

.page-about .about-next::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(118deg, rgba(75, 59, 143, .30) 0%, rgba(5, 26, 22, 0) 48%, rgba(122, 35, 61, .24) 100%);
  pointer-events: none;
}

.page-about .about-next__grid {
  position: relative;
  display: grid;
  gap: 28px;
}

.page-about .about-next__text {
  margin: 0 0 14px;
  max-width: 42ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-paper);
  opacity: .88;
}

.page-about .about-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-about .about-next__figure {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line-cool);
  border-radius: var(--radius);
  background: var(--c-ink-2);
}

.page-about .about-next__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
}

/* ---------- 桌面布局 ---------- */
@media (min-width: 900px) {
  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(32px, 5vw, 72px);
    align-items: start;
  }

  .page-about .about-origin__head {
    border-left: 1px solid var(--about-rule);
    padding-left: clamp(18px, 2.4vw, 30px);
  }

  .page-about .about-timeline {
    padding: 26px 0 0;
  }

  .page-about .about-timeline__line {
    display: block;
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
  }

  .page-about .about-timeline__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 26px;
    padding: 0;
  }

  .page-about .about-timeline__list::before {
    display: none;
  }

  .page-about .about-timeline__node::before {
    display: none;
  }

  .page-about .about-timeline__node:nth-child(2) {
    margin-top: 62px;
  }

  .page-about .about-timeline__node:nth-child(3) {
    margin-top: 124px;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }

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

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

  .page-about .about-reach__stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    max-width: 720px;
  }

  .page-about .about-next__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(30px, 4.6vw, 64px);
    align-items: center;
  }
}

@media (min-width: 960px) {
  .page-about .about-cover {
    padding-top: 18px;
  }

  .page-about .about-cover__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(32px, 5vw, 64px);
  }

  .page-about .about-cover__text {
    padding-left: 44px;
  }

  .page-about .about-cover__spine {
    display: flex;
    flex-direction: row;
    gap: 16px;
    position: absolute;
    left: 0;
    top: 6px;
    writing-mode: vertical-rl;
    font-size: 12px;
    letter-spacing: .30em;
    color: var(--c-muted);
  }

  .page-about .about-cover__spine span:first-child {
    color: var(--c-cyan);
  }

  .page-about .about-cover__title {
    font-size: clamp(3rem, 5.4vw, 4.6rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-timeline__node,
  .page-about .about-team__role,
  .page-about .about-collab__item {
    transition: none;
  }

  .page-about .about-timeline__node:hover,
  .page-about .about-team__role:hover,
  .page-about .about-collab__item:hover {
    transform: none;
  }
}
<<<END>>>