.page-about {
  --about-gap: 22px;
  --about-pad: 22px;
  padding-top: calc(var(--mk-header-offset) + 28px);
  padding-bottom: 0;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  margin-top: 18px;
  padding-bottom: 34px;
  border-bottom: 1px solid var(--mk-line);
}

.page-about .about-hero h1 {
  margin: 16px 0 20px;
  font-family: var(--mk-serif);
  font-weight: 900;
  font-size: clamp(2rem, 8.5vw, 4.25rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--mk-white);
  text-wrap: balance;
}

.page-about .about-hero__lead {
  max-width: 60ch;
  margin: 0;
  font-family: var(--mk-sans);
  font-size: 1rem;
  line-height: 1.85;
  color: var(--mk-mist);
}

.page-about .about-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin: 26px 0 0;
  padding-top: 18px;
  border-top: 1px dashed var(--mk-line);
}

.page-about .about-facts__item {
  min-width: 0;
}

.page-about .about-facts dt {
  font-family: var(--mk-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  color: var(--mk-mist);
  text-transform: uppercase;
}

.page-about .about-facts dd {
  margin: 6px 0 0;
  font-family: var(--mk-condensed);
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.15;
  color: var(--mk-lime);
  word-break: break-word;
}

/* ---------- 折线节点 ---------- */
.page-about .about-line {
  margin: 44px 0 0;
  padding: 24px 18px 22px;
  background: var(--mk-ink-2);
  border: 2px solid var(--mk-line);
  border-radius: var(--mk-radius);
  box-shadow: var(--mk-shadow);
}

.page-about .about-line__title {
  margin: 0 0 18px;
  font-family: var(--mk-condensed);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mk-mist);
}

.page-about .about-line__graph {
  height: 76px;
  overflow: hidden;
  border-bottom: 1px solid var(--mk-line);
}

.page-about .about-line__graph svg {
  display: block;
  width: 100%;
  height: 100%;
}

.page-about .about-line__nodes {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-line__node {
  padding: 4px 0 4px 14px;
  border-left: 2px solid var(--mk-line);
  transition: border-color 160ms ease, background-color 160ms ease;
}

.page-about .about-line__node:hover,
.page-about .about-line__node:focus-visible {
  border-left-color: var(--mk-lime);
  background: rgba(198, 255, 61, 0.05);
  outline: none;
}

.page-about .about-line__node:focus-visible {
  outline: 3px solid var(--mk-lime);
  outline-offset: 2px;
}

.page-about .about-line__year {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mk-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--mk-orange);
}

.page-about .about-line__year::before {
  content: "";
  display: block;
  width: 14px;
  height: 2px;
  background: var(--mk-orange);
}

.page-about .about-line__text {
  margin: 7px 0 0;
  font-family: var(--mk-sans);
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--mk-mist);
}

/* ---------- 阶段区块 ---------- */
.page-about .about-stage {
  padding: 40px 0 34px;
}

.page-about .about-stage + .about-stage {
  border-top: 1px solid var(--mk-line);
}

.page-about .about-stage__year {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-family: var(--mk-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--mk-orange);
  text-transform: uppercase;
}

.page-about .about-stage__year::before {
  content: "";
  display: block;
  width: 20px;
  height: 2px;
  background: var(--mk-orange);
}

.page-about .about-stage__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}

.page-about .about-stage h2 {
  margin: 0 0 14px;
  font-family: var(--mk-serif);
  font-weight: 800;
  font-size: clamp(1.5rem, 6vw, 2.25rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--mk-white);
}

.page-about .about-stage__text p {
  margin: 0 0 14px;
  font-family: var(--mk-sans);
  font-size: 0.9688rem;
  line-height: 1.85;
  color: var(--mk-mist);
}

.page-about .about-stage__text p:last-child {
  margin-bottom: 0;
}

/* ---------- 图片 ---------- */
.page-about .about-photo {
  margin: 0 0 20px;
  border: 2px solid var(--mk-line);
  border-radius: var(--mk-radius);
  overflow: hidden;
  background: var(--mk-ink-2);
  box-shadow: var(--mk-shadow);
}

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

.page-about .about-photo__cap {
  padding: 10px 14px;
  font-family: var(--mk-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.04em;
  line-height: 1.6;
  color: var(--mk-mist);
  border-top: 1px solid var(--mk-line);
}

/* ---------- 起步两栏 ---------- */
.page-about .about-seed {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-seed__item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 16px 18px;
  background: var(--mk-ink-2);
  border: 2px solid var(--mk-line);
  border-radius: var(--mk-radius);
  box-shadow: var(--mk-shadow);
  transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease;
}

.page-about .about-seed__item:hover {
  transform: translateY(-2px);
  box-shadow: var(--mk-shadow-hover);
  border-color: var(--mk-lime);
}

.page-about .about-seed__label {
  font-family: var(--mk-condensed);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--mk-lime);
  letter-spacing: 0.02em;
}

.page-about .about-seed__desc {
  font-family: var(--mk-sans);
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--mk-mist);
}

.page-about .about-seed__note {
  margin: 14px 0 0;
  font-family: var(--mk-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  color: var(--mk-orange);
}

/* ---------- 五个栏目 ---------- */
.page-about .about-pillars {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--mk-line);
}

.page-about .about-pillars__item {
  display: flex;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--mk-line);
}

.page-about .about-pillars__num {
  flex: 0 0 auto;
  font-family: var(--mk-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--mk-orange);
  padding-top: 3px;
}

.page-about .about-pillars__name {
  margin: 0 0 5px;
  font-family: var(--mk-condensed);
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--mk-white);
}

.page-about .about-pillars__desc {
  margin: 0;
  font-family: var(--mk-sans);
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--mk-mist);
}

/* ---------- 团队分工 ---------- */
.page-about .about-crew {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-crew__item {
  padding: 16px;
  background: var(--mk-ink-2);
  border: 2px solid var(--mk-line);
  border-radius: var(--mk-radius);
  box-shadow: var(--mk-shadow);
}

.page-about .about-crew__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
}

.page-about .about-crew__role {
  font-family: var(--mk-condensed);
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--mk-white);
}

.page-about .about-crew__count {
  font-family: var(--mk-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--mk-lime);
}

.page-about .about-crew__bar {
  height: 8px;
  background: var(--mk-line);
  border-radius: 2px;
  overflow: hidden;
}

.page-about .about-crew__fill {
  display: block;
  height: 100%;
  background: var(--mk-lime);
}

.page-about .about-crew__item:nth-child(1) .about-crew__fill { width: 43%; }
.page-about .about-crew__item:nth-child(2) .about-crew__fill { width: 36%; }
.page-about .about-crew__item:nth-child(3) .about-crew__fill { width: 21%; }

.page-about .about-crew__desc {
  margin: 10px 0 0;
  font-family: var(--mk-sans);
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--mk-mist);
}

/* ---------- 改版列表 ---------- */
.page-about .about-rev {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-rev__item {
  position: relative;
  padding: 16px 16px 16px 18px;
  background: var(--mk-ink-2);
  border: 2px solid var(--mk-line);
  border-left: 4px solid var(--mk-lime-deep);
  border-radius: var(--mk-radius);
  transition: border-left-color 160ms ease, transform 160ms ease;
}

.page-about .about-rev__item:hover {
  border-left-color: var(--mk-orange);
  transform: translateY(-2px);
}

.page-about .about-rev__tag {
  display: inline-block;
  margin-bottom: 8px;
  font-family: var(--mk-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: var(--mk-orange);
  text-transform: uppercase;
}

.page-about .about-rev__desc {
  margin: 0;
  font-family: var(--mk-sans);
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--mk-mist);
}

/* ---------- 标签层级 ---------- */
.page-about .about-levels {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-levels__item {
  padding: 7px 13px;
  font-family: var(--mk-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--mk-lime);
  border: 1px solid var(--mk-line);
  border-radius: 999px;
  background: rgba(198, 255, 61, 0.06);
}

/* ---------- 结尾反色区 ---------- */
.page-about .about-closing {
  margin-top: 48px;
  background: var(--mk-ink-2);
}

.page-about .about-closing__media {
  margin: 0;
  line-height: 0;
  border-top: 2px solid var(--mk-line);
}

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

.page-about .about-closing__panel {
  padding: 36px 0 44px;
  background: var(--mk-cream);
  color: var(--mk-brown);
}

.page-about .about-closing__eyebrow {
  color: var(--mk-orange);
}

.page-about .about-closing h2 {
  margin: 14px 0 18px;
  font-family: var(--mk-serif);
  font-weight: 900;
  font-size: clamp(1.5rem, 6vw, 2.35rem);
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--mk-brown);
}

.page-about .about-closing__body {
  max-width: 720px;
}

.page-about .about-closing__body p {
  margin: 0 0 14px;
  font-family: var(--mk-sans);
  font-size: 0.9688rem;
  line-height: 1.85;
  color: var(--mk-brown);
}

.page-about .about-closing__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.page-about .about-cta__btn {
  display: inline-flex;
  align-items: center;
  padding: 11px 18px;
  font-family: var(--mk-sans);
  font-size: 0.9375rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--mk-brown);
  text-decoration: none;
  background: transparent;
  border: 2px solid var(--mk-brown);
  border-radius: 10px;
  transition: background-color 160ms ease, color 160ms ease;
}

.page-about .about-cta__btn:hover {
  background: var(--mk-brown);
  color: var(--mk-cream);
}

.page-about .about-cta__btn:focus-visible {
  outline: 3px solid var(--mk-orange);
  outline-offset: 2px;
}

/* ---------- 平板 ---------- */
@media (min-width: 700px) {
  .page-about {
    --about-pad: 26px;
    padding-top: calc(var(--mk-header-offset) + 40px);
  }

  .page-about .about-hero h1 {
    font-size: clamp(2.4rem, 6.2vw, 4.25rem);
  }

  .page-about .about-facts dd {
    font-size: 1.5rem;
  }

  .page-about .about-line {
    padding: 28px 24px 26px;
  }

  .page-about .about-line__graph {
    height: 96px;
  }

  .page-about .about-line__nodes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px 22px;
  }

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

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

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

  .page-about .about-stage {
    padding: 48px 0 40px;
  }
}

/* ---------- 桌面：左右交错 ---------- */
@media (min-width: 960px) {
  .page-about .about-hero {
    padding-bottom: 42px;
  }

  .page-about .about-stage__grid {
    grid-template-columns: 5fr 7fr;
    gap: 44px;
    align-items: start;
  }

  .page-about .about-stage--flip .about-stage__grid {
    grid-template-columns: 7fr 5fr;
  }

  .page-about .about-stage--flip .about-stage__text {
    order: 2;
  }

  .page-about .about-stage--flip .about-stage__side {
    order: 1;
  }

  .page-about .about-stage__text {
    max-width: 52ch;
  }

  .page-about .about-stage--flip .about-stage__text {
    justify-self: end;
  }

  .page-about .about-line__nodes {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px;
  }

  .page-about .about-closing__panel {
    padding: 52px 0 60px;
  }

  .page-about .about-closing {
    margin-top: 64px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-seed__item,
  .page-about .about-rev__item,
  .page-about .about-line__node,
  .page-about .about-cta__btn {
    transition: none;
  }

  .page-about .about-seed__item:hover,
  .page-about .about-rev__item:hover {
    transform: none;
  }
}
<<<PAGE_CSS_END>>>