.page-about {
  --about-pad: clamp(48px, 7vw, 96px);
  --about-gap: clamp(20px, 3vw, 36px);
}

/* ---------- 面包屑 ---------- */
.page-about > .crumbs {
  padding-top: clamp(18px, 3vw, 28px);
  padding-bottom: clamp(8px, 1.6vw, 14px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(14px, 3vw, 28px) 0 clamp(36px, 6vw, 72px);
}

.page-about .about-hero::before {
  content: "2018";
  position: absolute;
  top: -0.12em;
  left: -0.03em;
  font-family: var(--font-mono);
  font-size: clamp(9rem, 27vw, 21rem);
  font-weight: 800;
  line-height: 0.86;
  letter-spacing: -0.05em;
  color: rgba(183, 255, 60, 0.055);
  pointer-events: none;
  user-select: none;
  z-index: 0;
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: var(--about-gap);
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 1fr);
    align-items: end;
  }
}

.page-about .about-hero__copy {
  border-left: 1px solid var(--line-strong);
  padding-left: clamp(16px, 2.6vw, 28px);
}

.page-about .about-hero__copy .kicker {
  display: inline-block;
  margin-bottom: 14px;
}

.page-about .about-hero h1 {
  font-size: clamp(2.4rem, 7vw, 5.2rem);
  line-height: 1.02;
  letter-spacing: -0.02em;
  margin: 0 0 18px;
  max-width: 15em;
}

.page-about .about-hero__lede {
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  line-height: 1.7;
  color: var(--paper-80);
  max-width: 40em;
  margin: 0 0 clamp(20px, 3vw, 32px);
}

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

.page-about .about-hero__media {
  border: 1px solid var(--line-strong);
  background: var(--ink-deep);
  margin: 0;
}

.page-about .about-hero__media .media__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 7 / 4;
  filter: saturate(0.86) contrast(1.04);
}

.page-about .about-hero__media .media__cap {
  padding: 12px 14px;
  border-top: 1px solid var(--line);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--paper-64);
}

/* ---------- 通用章节头微调 ---------- */
.page-about .section__head {
  max-width: 56rem;
  margin-bottom: clamp(24px, 4vw, 44px);
}

.page-about .section__lede {
  color: var(--paper-80);
  line-height: 1.75;
}

/* ---------- 品牌起点 ---------- */
.page-about .about-origin {
  padding: var(--about-pad) 0;
}

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

@media (min-width: 900px) {
  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }
}

.page-about .about-origin__text p {
  margin: 0 0 1.1em;
  line-height: 1.78;
  color: var(--paper-80);
  max-width: 44em;
}

.page-about .about-origin__text p:first-child::first-letter {
  font-family: var(--font-mono);
  font-size: 3.1em;
  font-weight: 800;
  line-height: 0.82;
  color: var(--lime);
  float: left;
  margin: 0.06em 0.14em 0 0;
}

.page-about .about-origin__facts {
  border: 1px solid var(--line-strong);
  padding: clamp(20px, 3vw, 28px);
}

.page-about .about-origin__facts-title {
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--paper-46);
  margin: 0 0 16px;
}

.page-about .about-factlist {
  margin: 0;
  display: grid;
  gap: 0;
}

.page-about .about-factlist__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 13px 0;
  border-top: 1px solid var(--line);
}

.page-about .about-factlist__row:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .about-factlist__row dt {
  font-size: 0.86rem;
  color: var(--paper-64);
}

.page-about .about-factlist__row dd {
  margin: 0;
  display: inline-flex;
  align-items: baseline;
  gap: 4px;
}

.page-about .about-factlist .score-num {
  font-size: clamp(1.5rem, 3vw, 2rem);
  color: var(--lime);
  line-height: 1;
}

.page-about .about-factlist__unit {
  font-size: 0.8rem;
  color: var(--paper-46);
}

/* ---------- 版本演进 ---------- */
.page-about .about-versions {
  padding: var(--about-pad) 0;
  background: var(--ink-deep);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .about-scale {
  margin-bottom: clamp(22px, 3.4vw, 36px);
}

.page-about .about-scale .rail__track {
  gap: 0;
}

.page-about .about-scale__tick {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  color: var(--paper-46);
  padding: 10px 16px 12px;
  border-left: 1px solid var(--line);
  border-bottom: 2px solid var(--line);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

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

.page-about .about-scale__tick--now {
  color: var(--ink-deep);
  background: var(--lime);
  border-bottom-color: var(--lime);
  font-weight: 700;
}

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

.page-about .about-timeline__item {
  display: grid;
  gap: 14px;
  padding: clamp(20px, 3vw, 30px) 0;
  border-bottom: 1px solid var(--line);
}

@media (min-width: 820px) {
  .page-about .about-timeline__item {
    grid-template-columns: minmax(140px, 190px) minmax(0, 1fr);
    gap: clamp(24px, 4vw, 56px);
    align-items: start;
    padding: clamp(26px, 3.4vw, 40px) 0;
  }
}

.page-about .about-timeline__item--now {
  background: linear-gradient(90deg, rgba(183, 255, 60, 0.09), transparent 62%);
}

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

@media (min-width: 820px) {
  .page-about .about-timeline__mark {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
}

.page-about .about-timeline__ver {
  font-family: var(--font-mono);
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  font-weight: 800;
  line-height: 0.9;
  letter-spacing: -0.03em;
  color: var(--lime);
  font-variant-numeric: tabular-nums;
}

.page-about .about-timeline__item--now .about-timeline__ver {
  color: var(--flame);
}

.page-about .about-timeline__title {
  margin: 0 0 10px;
  font-size: clamp(1.1rem, 2vw, 1.42rem);
  line-height: 1.35;
  letter-spacing: -0.01em;
}

.page-about .about-timeline__body p {
  margin: 0;
  line-height: 1.75;
  color: var(--paper-64);
  max-width: 46em;
}

/* ---------- 区域服务 ---------- */
.page-about .about-region {
  padding: var(--about-pad) 0;
}

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

@media (min-width: 900px) {
  .page-about .about-region__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
    gap: clamp(28px, 4.4vw, 60px);
    align-items: center;
  }
}

.page-about .about-region__media {
  margin: 0;
  border: 1px solid var(--line-strong);
  background: var(--ink-deep);
}

.page-about .about-region__media .media__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 12 / 7;
}

.page-about .about-region__media .media__cap {
  padding: 12px 14px;
  border-top: 1px solid var(--line);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--paper-64);
}

.page-about .about-region__copy p {
  line-height: 1.78;
  color: var(--paper-80);
  margin: 0 0 1em;
}

.page-about .about-region__copy .section__title {
  margin-bottom: 16px;
}

.page-about .about-stats {
  margin-top: clamp(20px, 3vw, 30px);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

@media (min-width: 620px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .about-stats__cell {
  background: var(--ink-deep);
  padding: clamp(16px, 2.4vw, 22px) clamp(12px, 1.8vw, 18px);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .about-stats__num {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  color: var(--lime);
  line-height: 1;
}

.page-about .about-stats__pct {
  font-size: 0.5em;
  margin-left: 1px;
}

.page-about .about-stats__label {
  font-size: 0.76rem;
  letter-spacing: 0.05em;
  color: var(--paper-46);
  line-height: 1.4;
}

/* ---------- 编辑团队 ---------- */
.page-about .about-team {
  padding: var(--about-pad) 0;
  background: var(--ink-deep);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

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

@media (min-width: 900px) {
  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: clamp(28px, 4vw, 52px);
    align-items: start;
  }
}

.page-about .about-team__steps {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.page-about .about-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: clamp(14px, 2.4vw, 24px);
  padding: clamp(18px, 2.6vw, 26px) 0;
  border-bottom: 1px solid var(--line);
}

.page-about .about-step__idx {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--lime);
  padding-top: 3px;
  font-variant-numeric: tabular-nums;
}

.page-about .about-step__title {
  margin: 0 0 8px;
  font-size: clamp(1.02rem, 1.7vw, 1.24rem);
}

.page-about .about-step p {
  margin: 0;
  line-height: 1.75;
  color: var(--paper-64);
  grid-column: 2;
}

.page-about .about-team__media {
  margin: 0;
  border: 1px solid var(--line-strong);
  background: var(--ink);
}

.page-about .about-team__media .media__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 10 / 7;
}

.page-about .about-team__media .media__cap {
  padding: 12px 14px;
  border-top: 1px solid var(--line);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--paper-64);
}

/* ---------- 合作生态 ---------- */
.page-about .about-partners {
  padding: var(--about-pad) 0;
}

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

@media (min-width: 900px) {
  .page-about .about-partners__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }
}

.page-about .about-partners__copy .section__title {
  margin-bottom: 18px;
}

.page-about .about-partners__copy p {
  line-height: 1.78;
  color: var(--paper-80);
  margin: 0 0 1em;
  max-width: 42em;
}

.page-about .about-partners__copy .link-arrow {
  display: inline-block;
  margin-top: 6px;
}

.page-about .about-partners__panel {
  border: 1px solid var(--line-strong);
  border-left: 3px solid var(--amber);
  padding: clamp(20px, 3vw, 30px);
}

.page-about .about-partners__label {
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--amber);
  margin: 0 0 12px;
}

.page-about .about-partners__award {
  font-size: clamp(1.2rem, 2.2vw, 1.5rem);
  line-height: 1.4;
  margin: 0 0 12px;
  letter-spacing: -0.01em;
}

.page-about .about-partners__desc {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--paper-64);
  margin: 0 0 18px;
}

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

.page-about .about-partners__list li {
  padding: 11px 0 11px 18px;
  border-bottom: 1px solid var(--line);
  font-size: 0.86rem;
  color: var(--paper-80);
  position: relative;
}

.page-about .about-partners__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.15em;
  width: 8px;
  height: 2px;
  background: var(--cyan);
}

/* ---------- 下一步 ---------- */
.page-about .about-next {
  padding: var(--about-pad) 0 calc(var(--about-pad) + 8px);
  background: linear-gradient(180deg, transparent, rgba(7, 26, 21, 0.72));
}

.page-about .about-next__grid {
  margin-bottom: clamp(28px, 4vw, 44px);
}

.page-about .about-next__card {
  border: 1px solid var(--line);
  border-top: 2px solid var(--cyan);
  padding: clamp(20px, 2.8vw, 28px);
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: rgba(7, 26, 21, 0.42);
}

.page-about .about-next__card .tag {
  align-self: flex-start;
}

.page-about .about-next__card h3 {
  margin: 0;
  font-size: clamp(1.05rem, 1.8vw, 1.22rem);
  line-height: 1.4;
}

.page-about .about-next__card p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--paper-64);
}

.page-about .about-next__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: clamp(20px, 3vw, 30px);
  border-top: 1px solid var(--line);
}

/* ---------- 窄屏保护 ---------- */
@media (max-width: 420px) {
  .page-about .about-hero h1 {
    font-size: clamp(2rem, 9vw, 2.6rem);
  }

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

  .page-about .about-next__cta .btn {
    flex: 1 1 100%;
  }
}
<<<END>>>