.page-about {
  --about-block: clamp(44px, 7vw, 96px);
  --about-head-gap: clamp(22px, 3.5vw, 36px);
  background: var(--ink-900);
  color: var(--text);
  font-family: var(--font);
  overflow-x: clip;
}

.page-about h1,
.page-about h2,
.page-about h3 {
  margin: 0;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.page-about p {
  margin: 0;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(18px, 3vw, 30px) 0 clamp(40px, 6vw, 84px);
  background:
    radial-gradient(115% 85% at 88% 0%, rgba(245, 165, 36, 0.16), transparent 62%),
    radial-gradient(85% 75% at -5% 100%, rgba(124, 45, 74, 0.34), transparent 68%),
    var(--ink-900);
}

.page-about .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: clamp(20px, 3.4vw, 34px);
}

.page-about .breadcrumb a {
  color: var(--text-dim);
  text-decoration: none;
}

.page-about .breadcrumb a:hover {
  color: var(--gold);
}

.page-about .breadcrumb__sep {
  opacity: 0.55;
}

.page-about .breadcrumb [aria-current="page"] {
  color: var(--gold);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
}

.page-about .about-hero__text .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
}

.page-about .about-hero__text .eyebrow::before {
  content: "";
  width: 3px;
  height: 13px;
  background: var(--gold);
  border-radius: 2px;
}

.page-about .about-hero h1 {
  font-size: clamp(32px, 6vw, 68px);
  line-height: 1.08;
  font-weight: 900;
  max-width: 12em;
  color: var(--text);
}

.page-about .about-hero__lede {
  margin-top: clamp(18px, 2.6vw, 26px);
  max-width: 44em;
  font-size: clamp(16px, 1.7vw, 19px);
  line-height: 1.8;
  color: var(--text-dim);
}

.page-about .about-hero__facts {
  list-style: none;
  margin: clamp(26px, 4vw, 40px) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 14px 0;
}

.page-about .about-hero__facts li {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding-right: clamp(16px, 2.6vw, 30px);
  margin-right: clamp(16px, 2.6vw, 30px);
  border-right: 1px solid var(--line);
}

.page-about .about-hero__facts li:last-child {
  padding-right: 0;
  margin-right: 0;
  border-right: 0;
}

.page-about .about-hero__num {
  font-family: var(--mono);
  font-size: clamp(24px, 3.2vw, 34px);
  font-weight: 800;
  color: var(--gold);
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}

.page-about .about-hero__label {
  font-size: 13px;
  color: var(--text-dim);
  letter-spacing: 0.04em;
}

.page-about .about-hero__media {
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius-organic);
  border: 1px solid var(--line-soft);
  background: var(--ink-800);
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
}

/* ---------- 章节画板 ---------- */
.page-about .sheet {
  position: relative;
  padding: var(--about-block) 0;
  border-top: 1px solid var(--line-soft);
}

.page-about .sheet--line {
  background: linear-gradient(180deg, var(--ink-800), var(--ink-900) 78%);
}

.page-about .sheet--wine {
  background: var(--wine);
  border-top-color: transparent;
}

.page-about .sheet--indigo {
  background: var(--indigo);
  border-top-color: transparent;
}

.page-about .sheet__head {
  max-width: 62em;
}

.page-about .sheet__head .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 12px;
}

.page-about .sheet__head .eyebrow::before {
  content: "";
  width: 3px;
  height: 12px;
  background: var(--gold);
  border-radius: 2px;
}

.page-about .sheet--wine .sheet__head .eyebrow::before,
.page-about .sheet--indigo .sheet__head .eyebrow::before {
  background: var(--paper);
}

.page-about .sheet h2 {
  font-size: clamp(26px, 4.2vw, 44px);
  line-height: 1.18;
  max-width: 20em;
}

.page-about .sheet__lede {
  margin-top: 16px;
  max-width: 52em;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.8;
  color: var(--text-dim);
}

.page-about .sheet--wine .sheet__lede,
.page-about .sheet--indigo .sheet__lede {
  color: rgba(246, 239, 227, 0.78);
}

/* ---------- 四段时间 ---------- */
.page-about .steps {
  list-style: none;
  margin: var(--about-head-gap) 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-about .steps__item {
  padding: 22px 0 24px;
  border-top: 1px solid var(--line);
}

.page-about .steps__item:last-child {
  border-bottom: 1px solid var(--line);
}

.page-about .steps__num {
  display: inline-block;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--ember);
  padding: 2px 8px;
  border: 1px solid rgba(255, 107, 44, 0.42);
  border-radius: var(--radius-chip);
}

.page-about .steps__item h3 {
  margin-top: 10px;
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.35;
}

.page-about .steps__item p {
  margin-top: 10px;
  font-size: 16px;
  line-height: 1.78;
  color: var(--text-dim);
}

/* ---------- 四个小组条带 ---------- */
.page-about .flow {
  list-style: none;
  margin: var(--about-head-gap) 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .flow__stop {
  position: relative;
  background: var(--ink-800);
  border-radius: var(--radius-organic);
  border-left: 3px solid var(--line);
  padding: 18px 18px 18px 22px;
  transition: background 0.18s var(--ease), border-color 0.18s var(--ease), transform 0.18s var(--ease);
}

.page-about .flow__stop:hover,
.page-about .flow__stop:focus-within {
  background: var(--ink-750);
  border-left-color: var(--gold);
  transform: translateY(-2px);
}

.page-about .flow__idx {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-about .flow__stop h3 {
  margin-top: 8px;
  font-size: 18px;
  line-height: 1.4;
}

.page-about .flow__brief {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--text-dim);
}

.page-about .flow__more {
  margin-top: 0;
  max-height: 0;
  overflow: hidden;
  font-size: 14px;
  line-height: 1.72;
  color: var(--text-dim);
  opacity: 0;
  transition: max-height 0.28s var(--ease), opacity 0.24s var(--ease), margin-top 0.24s var(--ease);
}

.page-about .flow__stop:hover .flow__more,
.page-about .flow__stop:focus-within .flow__more {
  max-height: 180px;
  margin-top: 10px;
  opacity: 1;
}

.page-about .team__split {
  margin-top: clamp(26px, 4vw, 42px);
  display: grid;
  gap: clamp(22px, 3.5vw, 40px);
}

.page-about .team__handoff {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  align-content: start;
}

.page-about .team__handoff li {
  position: relative;
  padding: 16px 0 16px 18px;
  border-left: 2px solid var(--line);
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-dim);
}

.page-about .team__handoff li::before {
  content: "";
  position: absolute;
  left: -6px;
  top: 24px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 3px rgba(245, 165, 36, 0.16);
}

.page-about .team__tag {
  display: block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--teal);
  margin-bottom: 6px;
}

.page-about .team__media {
  margin: 0;
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-organic);
  background: var(--ink-750);
}

.page-about .team__media img {
  display: block;
  width: 100%;
  height: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

.page-about .team__media .media-frame__tag {
  position: absolute;
  left: 14px;
  bottom: 14px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  padding: 6px 10px;
  border-radius: var(--radius-chip);
  background: rgba(11, 18, 32, 0.82);
  color: var(--teal);
}

/* ---------- 数据来源 ---------- */
.page-about .about-data {
  position: relative;
  overflow: hidden;
  background: var(--ink-800);
  border-top-color: transparent;
}

.page-about .about-data__bg {
  position: absolute;
  inset: 0;
  margin: 0;
  z-index: 0;
}

.page-about .about-data__bg img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.34;
}

.page-about .about-data__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 18, 32, 0.62), rgba(11, 18, 32, 0.94) 72%);
}

.page-about .about-data__inner {
  position: relative;
  z-index: 1;
}

.page-about .about-data__grid {
  display: grid;
  gap: clamp(24px, 4vw, 56px);
}

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

.page-about .about-data__list li {
  padding: 20px 0;
  border-top: 1px solid var(--line);
}

.page-about .about-data__list li:last-child {
  border-bottom: 1px solid var(--line);
}

.page-about .about-data__list h3 {
  font-size: 17px;
  line-height: 1.4;
  color: var(--gold);
}

.page-about .about-data__list p {
  margin-top: 8px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-dim);
}

/* ---------- 时间线 ---------- */
.page-about .rail {
  list-style: none;
  margin: var(--about-head-gap) 0 0;
  padding: 0 0 0 44px;
  position: relative;
}

.page-about .rail::before {
  content: "";
  position: absolute;
  left: 13px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(180deg, var(--gold), rgba(245, 165, 36, 0.22));
}

.page-about .rail__item {
  position: relative;
  padding-bottom: clamp(24px, 3.6vw, 40px);
}

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

.page-about .rail__item::before {
  content: "";
  position: absolute;
  left: -37px;
  top: 8px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 4px rgba(245, 165, 36, 0.15);
}

.page-about .rail__meta {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.page-about .rail__num {
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.06em;
}

.page-about .rail__phase {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--text-dim);
}

.page-about .rail__title {
  margin-top: 6px;
  font-size: clamp(18px, 2.1vw, 23px);
  line-height: 1.35;
}

.page-about .rail__item p {
  margin-top: 8px;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-dim);
}

.page-about .rail__go {
  display: inline-block;
  margin-top: 10px;
  font-size: 13px;
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid rgba(79, 209, 197, 0.4);
  padding-bottom: 1px;
}

.page-about .rail__go:hover {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

/* ---------- 规模数字 ---------- */
.page-about .scale {
  list-style: none;
  margin: var(--about-head-gap) 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-about .scale__item {
  padding: 20px 0 22px;
  border-top: 1px solid rgba(246, 239, 227, 0.24);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-about .scale__num {
  font-family: var(--mono);
  font-size: clamp(30px, 4.4vw, 48px);
  font-weight: 800;
  line-height: 1.05;
  color: var(--paper);
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
}

.page-about .scale__num em {
  font-family: var(--font);
  font-style: normal;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-left: 6px;
  color: rgba(246, 239, 227, 0.72);
}

.page-about .scale__label {
  font-size: 15px;
  line-height: 1.7;
  color: rgba(246, 239, 227, 0.82);
  max-width: 24em;
}

/* ---------- 编辑标准 ---------- */
.page-about .rules {
  list-style: none;
  margin: var(--about-head-gap) 0 0;
  padding: 0;
}

.page-about .rules__item {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 4px 14px;
  align-items: start;
  padding: clamp(18px, 2.6vw, 26px) 0;
  border-top: 1px solid var(--line);
}

.page-about .rules__item:last-child {
  border-bottom: 1px solid var(--line);
}

.page-about .rules__num {
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--ember);
  padding-top: 6px;
  font-variant-numeric: tabular-nums;
}

.page-about .rules__text {
  font-size: clamp(17px, 2.2vw, 25px);
  line-height: 1.52;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
}

/* ---------- 合作 ---------- */
.page-about .partners__grid {
  margin-top: var(--about-head-gap);
  display: grid;
  gap: 0;
}

.page-about .partners__item {
  padding: 20px 0 22px;
  border-top: 1px solid rgba(246, 239, 227, 0.24);
}

.page-about .partners__item h3 {
  font-size: 17px;
  line-height: 1.4;
  color: var(--paper);
}

.page-about .partners__item p {
  margin-top: 9px;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(246, 239, 227, 0.8);
  max-width: 28em;
}

.page-about .partners__actions {
  margin-top: clamp(26px, 3.6vw, 40px);
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 收尾 ---------- */
.page-about .about-cta {
  border-top-color: var(--line-soft);
  background:
    radial-gradient(90% 90% at 100% 0%, rgba(245, 165, 36, 0.14), transparent 65%),
    var(--ink-900);
}

.page-about .about-cta h2 {
  font-size: clamp(24px, 3.6vw, 38px);
  line-height: 1.2;
}

.page-about .about-cta p {
  margin-top: 14px;
  max-width: 48em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-about .about-cta__actions {
  margin-top: clamp(22px, 3vw, 32px);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 18px;
}

.page-about .about-cta__link {
  font-size: 15px;
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid rgba(79, 209, 197, 0.42);
  padding-bottom: 2px;
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(24px, 4vw, 52px);
  }

  .page-about .scale {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(20px, 3.5vw, 44px);
  }

  .page-about .partners__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(22px, 3.5vw, 48px);
  }
}

@media (min-width: 820px) {
  .page-about .flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
    align-items: stretch;
  }

  .page-about .flow__stop {
    border-radius: var(--radius-organic);
    margin-right: 14px;
  }

  .page-about .flow__stop:last-child {
    margin-right: 0;
  }

  .page-about .flow__stop::after {
    content: "";
    position: absolute;
    right: -13px;
    top: 50%;
    width: 8px;
    height: 8px;
    border-top: 2px solid var(--gold);
    border-right: 2px solid var(--gold);
    transform: translateY(-50%) rotate(45deg);
    opacity: 0.6;
  }

  .page-about .flow__stop:last-child::after {
    display: none;
  }

  .page-about .team__split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 320px);
    align-items: start;
  }

  .page-about .rules__item {
    grid-template-columns: 64px minmax(0, 1fr);
    gap: 4px 22px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.72fr);
    align-items: end;
  }

  .page-about .about-data__grid {
    grid-template-columns: minmax(0, 0.78fr) minmax(0, 1.22fr);
    align-items: start;
  }

  .page-about .rail {
    padding-left: 56px;
  }

  .page-about .rail::before {
    left: 17px;
  }

  .page-about .rail__item::before {
    left: -45px;
    width: 14px;
    height: 14px;
  }
}

@media (min-width: 1000px) {
  .page-about .scale {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (hover: none) {
  .page-about .flow__more {
    max-height: none;
    opacity: 1;
    margin-top: 10px;
  }

  .page-about .flow__stop:hover {
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .flow__stop,
  .page-about .flow__more {
    transition: none;
  }

  .page-about .flow__stop:hover,
  .page-about .flow__stop:focus-within {
    transform: none;
  }
}
<<<END>>>