.page-about {
  --about-hair: rgba(30, 58, 102, 0.78);
  --about-glow: rgba(43, 232, 213, 0.24);
  --about-glow-soft: rgba(43, 232, 213, 0.08);
  --about-ink: #3A322B;
  --about-ink-dim: #5C534B;
  background: var(--deep);
  color: var(--text);
}

/* ---------- 面包屑 ---------- */
.page-about .crumbs {
  padding-top: 22px;
  padding-bottom: 6px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding-bottom: 8px;
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 34px;
  padding-top: 18px;
  padding-bottom: 30px;
  border-top: 1px solid var(--about-hair);
}

.page-about .about-hero__title {
  margin: 14px 0 0;
  font-size: clamp(30px, 7.4vw, 62px);
  line-height: 1.06;
  font-weight: 900;
  letter-spacing: -0.025em;
  color: #fff;
  word-break: break-word;
}

.page-about .about-hero__mark {
  display: inline;
  background-image: linear-gradient(transparent 64%, rgba(43, 232, 213, 0.34) 64%);
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}

.page-about .about-hero__lead {
  margin: 22px 0 0;
  max-width: 36em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-dim);
}

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

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

.page-about .about-hero__note {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--cyan);
  opacity: 0.78;
}

.page-about .about-hero__stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--about-hair);
  border: 1px solid var(--about-hair);
}

.page-about .about-hero__stat {
  background: var(--night);
  padding: 16px 14px;
  min-width: 0;
}

.page-about .about-hero__statnum {
  display: block;
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan);
}

.page-about .about-hero__statlabel {
  display: block;
  margin-top: 8px;
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--text-dim);
}

/* ---------- 起源 ---------- */
.page-about .about-origin {
  padding: 52px 0 48px;
  border-top: 1px solid var(--about-hair);
}

.page-about .about-origin__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

.page-about .about-origin__story .prose {
  margin-top: 18px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-dim);
}

.page-about .about-origin__note {
  position: relative;
  background: var(--cream);
  color: var(--brown);
  border: 1px solid rgba(28, 23, 20, 0.12);
  box-shadow: var(--shadow-card);
  padding: 24px 22px 24px 26px;
}

.page-about .about-origin__note::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--flame);
}

.page-about .about-origin__notekey {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--flame-dark);
}

.page-about .about-origin__notelist {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
}

.page-about .about-origin__notelist li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 14px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--about-ink);
}

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

.page-about .about-origin__notelist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 1px;
  background: var(--flame-dark);
}

/* ---------- 发展阶段 ---------- */
.page-about .about-stages {
  padding: 52px 0 40px;
  border-top: 1px solid var(--about-hair);
}

.page-about .about-stages__figure {
  margin: 30px 0 42px;
}

.page-about .about-stages__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--about-hair);
  background: var(--night);
}

.page-about .about-stages__cap {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--text-dim);
}

.page-about .about-stages__list {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-about .about-stages__list::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan) 0%, rgba(43, 232, 213, 0.18) 70%, rgba(43, 232, 213, 0) 100%);
}

.page-about .tl__item {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  padding: 0 0 40px 30px;
}

.page-about .tl__item:last-child {
  padding-bottom: 8px;
}

.page-about .tl__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--deep);
  border: 2px solid var(--cyan);
  box-sizing: border-box;
}

.page-about .tl__marker {
  display: flex;
  align-items: center;
  gap: 12px;
}

.page-about .tl__year {
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-about .tl__ver {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--slate);
  border: 1px solid var(--about-hair);
  padding: 3px 7px;
}

.page-about .tl__title {
  margin: 0 0 12px;
  font-size: 20px;
  line-height: 1.35;
  font-weight: 800;
  color: #fff;
}

.page-about .tl__text {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--text-dim);
}

.page-about .tl__scene {
  margin: 14px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--flame);
  font-size: 14px;
  line-height: 1.7;
  color: var(--cyan-soft);
  opacity: 0.92;
}

/* ---------- 数据能力（奶油纸） ---------- */
.page-about .about-engine {
  background: var(--cream);
  color: var(--about-ink);
  padding: 52px 0 54px;
  border-top: 1px solid var(--about-hair);
}

.page-about .about-engine .section__num,
.page-about .about-engine .section__title {
  color: var(--brown);
}

.page-about .about-engine__cols {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  margin-top: 26px;
}

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

.page-about .about-engine__flow {
  list-style: none;
  margin: 36px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: rgba(28, 23, 20, 0.16);
  border: 1px solid rgba(28, 23, 20, 0.16);
}

.page-about .about-engine__step {
  background: var(--cream);
  padding: 20px 18px 22px;
}

.page-about .about-engine__stepnum {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--flame-dark);
}

.page-about .about-engine__steptitle {
  display: block;
  margin-top: 10px;
  font-size: 17px;
  font-weight: 800;
  color: var(--brown);
}

.page-about .about-engine__steptext {
  display: block;
  margin-top: 8px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--about-ink-dim);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  padding: 52px 0 48px;
  border-top: 1px solid var(--about-hair);
}

.page-about .about-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

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

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--about-hair);
  background: var(--night);
}

.page-about .about-team__body .prose {
  margin-top: 18px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-dim);
}

.page-about .about-team__groups {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-top: 26px;
}

.page-about .about-team__group {
  border-top: 2px solid var(--cyan);
  padding-top: 12px;
}

.page-about .about-team__grouptitle {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 800;
  color: #fff;
}

.page-about .about-team__grouptext {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-dim);
}

/* ---------- 覆盖区域 ---------- */
.page-about .about-reach {
  padding: 52px 0 48px;
  border-top: 1px solid var(--about-hair);
}

.page-about .about-reach__board {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-top: 28px;
  background: var(--about-hair);
  border: 1px solid var(--about-hair);
}

.page-about .about-reach__cell {
  background: var(--night);
  padding: 26px 22px 28px;
}

.page-about .about-reach__figure {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(34px, 8vw, 52px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--flame);
}

.page-about .about-reach__celltitle {
  display: block;
  margin-top: 14px;
  font-size: 15px;
  font-weight: 800;
  color: #fff;
}

.page-about .about-reach__celltext {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-dim);
}

/* ---------- 下一个赛季 ---------- */
.page-about .about-next {
  padding: 52px 0 54px;
  border-top: 1px solid var(--about-hair);
  background: linear-gradient(180deg, var(--deep) 0%, var(--night) 100%);
}

.page-about .about-next__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

.page-about .about-next__body .prose {
  margin-top: 18px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-dim);
}

.page-about .about-next__list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
}

.page-about .about-next__item {
  padding: 16px 0 18px 20px;
  border-left: 1px solid var(--about-glow);
  position: relative;
}

.page-about .about-next__item::before {
  content: "";
  position: absolute;
  left: -3px;
  top: 22px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--cyan);
}

.page-about .about-next__itemtitle {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 800;
  color: #fff;
}

.page-about .about-next__itemtext {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--text-dim);
}

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

.page-about .about-next__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--about-hair);
  background: var(--night-2);
}

/* ---------- 里程碑索引 ---------- */
.page-about .about-index {
  padding: 52px 0 72px;
  border-top: 1px solid var(--about-hair);
}

.page-about .about-index__list {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  border-top: 1px solid var(--about-hair);
}

.page-about .about-index__item {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 6px 12px;
  align-items: baseline;
  padding: 15px 10px 15px 8px;
  border-bottom: 1px solid var(--about-hair);
  transition: background 180ms var(--ease), padding-left 180ms var(--ease);
}

.page-about .about-index__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--slate);
  transition: color 180ms var(--ease);
}

.page-about .about-index__mark {
  font-size: 15px;
  font-weight: 800;
  color: #fff;
}

.page-about .about-index__desc {
  grid-column: 2 / -1;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-dim);
}

/* ---------- 相关栏目 ---------- */
.page-about .about-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 26px;
  margin-top: 32px;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-about .about-team__groups {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px 24px;
  }

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

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

  .page-about .about-index__item {
    grid-template-columns: 56px 200px 1fr;
    gap: 12px 16px;
    padding-left: 12px;
  }

  .page-about .about-index__desc {
    grid-column: auto;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: 7fr 5fr;
    gap: 48px;
    align-items: start;
    padding-top: 26px;
    padding-bottom: 40px;
  }

  .page-about .about-hero__right {
    padding-top: 62px;
  }

  .page-about .about-hero__note {
    position: absolute;
    right: 0;
    top: 0;
    writing-mode: vertical-rl;
    text-orientation: mixed;
    letter-spacing: 0.28em;
    margin: 0;
    font-size: 11px;
  }

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

  .page-about .about-origin__grid {
    grid-template-columns: 7fr 5fr;
    gap: 52px;
    align-items: start;
  }

  .page-about .about-origin__note {
    margin-top: 46px;
  }

  .page-about .tl__item {
    grid-template-columns: 128px 1fr;
    gap: 34px;
    padding-left: 44px;
    padding-bottom: 46px;
  }

  .page-about .tl__item::before {
    left: 0;
    top: 10px;
  }

  .page-about .about-stages__list::before {
    left: 5px;
  }

  .page-about .tl__marker {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    padding-top: 2px;
  }

  .page-about .tl__year {
    writing-mode: vertical-rl;
    text-orientation: upright;
    font-size: 24px;
    letter-spacing: 0.22em;
    line-height: 1;
    padding: 2px 0;
  }

  .page-about .about-engine__cols {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 48px;
  }

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

  .page-about .about-team__grid {
    grid-template-columns: 5fr 7fr;
    gap: 52px;
    align-items: start;
  }

  .page-about .about-team__figure {
    position: sticky;
    top: 120px;
  }

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

  .page-about .about-next__grid {
    grid-template-columns: 7fr 5fr;
    gap: 52px;
    align-items: center;
  }

  .page-about .about-index__item {
    grid-template-columns: 72px 240px 1fr;
  }
}

@media (min-width: 1180px) {
  .page-about .about-hero__statnum {
    font-size: 32px;
  }

  .page-about .about-index__item:hover {
    background: var(--about-glow-soft);
    padding-left: 20px;
  }

  .page-about .about-index__item:hover .about-index__num {
    color: var(--flame);
  }
}
<<<END>>>