.page-about {
  --about-badge: 56px;
  padding-bottom: clamp(2.5rem, 5vw, 4rem);
}

.page-about .section {
  padding-block: clamp(1.75rem, 4vw, 3.25rem);
}

.page-about h1,
.page-about h2,
.page-about h3 {
  margin: 0 0 0.6rem;
  color: var(--ink);
  font-weight: 700;
  line-height: 1.28;
}

.page-about h1 {
  font-size: var(--fs-hero);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -0.012em;
  margin: 0.55rem 0 1rem;
}

.page-about h2 {
  font-size: var(--fs-500);
}

.page-about h3 {
  font-size: var(--fs-400);
  line-height: 1.35;
}

.page-about p {
  margin: 0 0 0.8rem;
}

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

.page-about .lead {
  color: var(--mist);
  line-height: 1.75;
}

/* ---------- 首屏拼贴 ---------- */

.page-about .about-hero {
  padding-block: clamp(0.75rem, 2vw, 1.25rem) clamp(2rem, 4vw, 3rem);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.5rem, 3vw, 2.5rem);
  align-items: start;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.4rem;
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--line);
  border-radius: var(--r-m);
  overflow: hidden;
  background: var(--line);
  box-shadow: var(--shadow-soft);
}

.page-about .about-hero__stats .stat {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding: 1rem 0.9rem;
  background: var(--deep-2);
}

.page-about .about-hero__stats .stat__num {
  font-family: var(--font-mono);
  font-size: clamp(1.45rem, 1rem + 1.9vw, 2.1rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.015em;
  color: var(--cyan);
}

.page-about .about-hero__stats .stat__label {
  font-size: var(--fs-100);
  line-height: 1.5;
  color: var(--mist);
}

/* ---------- 章节头 ---------- */

.page-about .about-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.25rem, 2.5vw, 2rem);
  margin-bottom: clamp(1.5rem, 3vw, 2.5rem);
  align-items: start;
}

.page-about .about-head--stack {
  max-width: 66ch;
}

.page-about .about-head__figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--r-m);
  overflow: hidden;
  background: var(--deep-2);
  aspect-ratio: 4 / 3;
}

.page-about .about-head__figure--wide {
  aspect-ratio: 16 / 9;
}

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

/* ---------- 版本时间轴 ---------- */

.page-about .vtl {
  position: relative;
  display: grid;
  gap: clamp(1.25rem, 2.5vw, 2rem);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .vtl::before {
  content: "";
  position: absolute;
  top: 10px;
  bottom: 10px;
  left: 27px;
  width: 1px;
  background: linear-gradient(180deg, transparent, var(--line) 8%, var(--line) 92%, transparent);
}

.page-about .vtl__item {
  position: relative;
  display: grid;
  grid-template-columns: var(--about-badge) minmax(0, 1fr);
  gap: clamp(0.75rem, 2vw, 1.5rem);
  align-items: start;
}

.page-about .vtl__ver {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--about-badge);
  height: var(--about-badge);
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--deep);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 0.94rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  transition: border-color var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}

.page-about .vtl__item:hover .vtl__ver {
  border-color: var(--cyan-24);
  box-shadow: 0 0 0 4px var(--cyan-08);
}

.page-about .vtl__body {
  padding-top: 0.35rem;
}

.page-about .vtl__tag {
  margin: 0 0 0.3rem;
  font-family: var(--font-mono);
  font-size: var(--fs-100);
  letter-spacing: 0.08em;
  color: var(--cyan-soft);
}

.page-about .vtl__list {
  display: grid;
  gap: 0.4rem;
  margin: 0.75rem 0 0;
  padding: 0;
  list-style: none;
}

.page-about .vtl__list li {
  position: relative;
  padding-left: 1.1rem;
  font-size: var(--fs-200);
  line-height: 1.7;
  color: var(--mist);
}

.page-about .vtl__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.66em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--cyan);
  opacity: 0.7;
}

/* ---------- 团队分工 ---------- */

.page-about .about-team__grid {
  align-items: start;
}

.page-about .about-team__figure {
  margin: 0 0 1.25rem;
  border: 1px solid var(--line);
  border-radius: var(--r-m);
  overflow: hidden;
  background: var(--deep-2);
  aspect-ratio: 4 / 5;
}

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

.page-about .team-bars {
  display: grid;
  gap: 0.7rem;
  margin-top: 1.2rem;
}

.page-about .team-bar {
  padding: 0.85rem 0.95rem;
  border: 1px solid var(--line);
  border-radius: var(--r-s);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), transparent);
  transition: transform var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease);
}

.page-about .team-bar:hover {
  transform: translateY(-2px);
  border-color: var(--cyan-24);
  box-shadow: var(--shadow-soft);
}

.page-about .team-bar__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.45rem;
}

.page-about .team-bar__name {
  font-size: var(--fs-300);
  font-weight: 700;
  color: var(--ink);
}

.page-about .team-bar__val {
  font-family: var(--font-mono);
  font-size: var(--fs-100);
  letter-spacing: 0.03em;
  color: var(--cyan);
}

.page-about .team-bar__track {
  display: block;
  height: 4px;
  border-radius: var(--r-pill);
  background: rgba(157, 182, 196, 0.16);
  overflow: hidden;
}

.page-about .team-bar__fill {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--cyan), var(--cyan-soft));
}

.page-about .team-bar--edit .team-bar__fill { width: 47%; }
.page-about .team-bar--data .team-bar__fill { width: 18%; }
.page-about .team-bar--tech .team-bar__fill { width: 26%; }
.page-about .team-bar--service .team-bar__fill { width: 9%; }

.page-about .team-bar__desc {
  margin: 0.55rem 0 0;
  font-size: var(--fs-200);
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 生产流程 ---------- */

.page-about .flow {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1rem, 2vw, 1.4rem);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .flow-step {
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.page-about .flow-step__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  margin-bottom: 0.85rem;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--deep-2);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: var(--fs-200);
  font-weight: 700;
}

.page-about .flow-step p {
  font-size: var(--fs-200);
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 品质服务 ---------- */

.page-about .quality-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  border: 1px solid var(--line);
  border-radius: var(--r-m);
  overflow: hidden;
  background: var(--line);
}

.page-about .quality-item {
  padding: 1.15rem 1rem;
  background: var(--zone-wine);
}

.page-about .quality-item__time {
  margin: 0 0 0.45rem;
  font-family: var(--font-mono);
  font-size: var(--fs-200);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--cyan-soft);
}

.page-about .quality-item p:last-child {
  font-size: var(--fs-200);
  line-height: 1.75;
  color: var(--ink);
}

.page-about .quality-note {
  margin: 1.25rem 0 0;
  padding-left: 1rem;
  border-left: 2px solid var(--cyan-24);
  font-size: var(--fs-200);
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 合作生态 ---------- */

.page-about .eco-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(0.9rem, 2vw, 1.25rem);
}

.page-about .eco-card {
  padding: 1.3rem 1.15rem;
  border: 1px solid var(--line);
  border-radius: var(--r-m);
  background: linear-gradient(160deg, var(--zone-indigo), var(--deep-2) 78%);
  transition: border-color var(--t-fast) var(--ease), transform var(--t-fast) var(--ease);
}

.page-about .eco-card:hover {
  transform: translateY(-3px);
  border-color: var(--cyan-24);
}

.page-about .eco-card__num {
  margin: 0 0 0.55rem;
  font-family: var(--font-mono);
  font-size: clamp(1.65rem, 1.2rem + 1.6vw, 2.25rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan);
}

.page-about .eco-card p:last-child {
  font-size: var(--fs-200);
  line-height: 1.75;
  color: var(--mist);
}

.page-about .eco-cta {
  margin: 1.25rem 0 0;
  font-size: var(--fs-200);
  line-height: 1.8;
  color: var(--mist);
}

.page-about .eco-cta a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 读者画像 ---------- */

.page-about .reader-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(0.8rem, 1.6vw, 1rem);
}

.page-about .reader-card {
  padding: 1.1rem 1rem;
  border-left: 2px solid var(--cyan);
  border-radius: 0 var(--r-s) var(--r-s) 0;
  background: rgba(47, 227, 214, 0.04);
}

.page-about .reader-card__time {
  margin: 0 0 0.4rem;
  font-family: var(--font-mono);
  font-size: var(--fs-100);
  letter-spacing: 0.04em;
  color: var(--cyan-soft);
}

.page-about .reader-card h3 {
  font-size: var(--fs-300);
  margin-bottom: 0.4rem;
}

.page-about .reader-card p:last-child {
  font-size: var(--fs-200);
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 下一步 ---------- */

.page-about .about-next__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.4rem;
  padding: clamp(1.4rem, 3vw, 2.25rem);
  border: 1px solid var(--line);
  border-radius: var(--r-l);
  background:
    radial-gradient(120% 100% at 0% 0%, var(--cyan-10), transparent 62%),
    linear-gradient(155deg, var(--deep-2), var(--zone-indigo));
}

.page-about .about-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  align-content: start;
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-about .quality-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 720px) {
  .page-about .flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(2rem, 4vw, 3.5rem);
    align-items: end;
  }

  .page-about .about-head {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: center;
  }

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

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

  .page-about .about-next__inner {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    align-items: center;
    gap: 2rem;
  }
}

@media (min-width: 1024px) {
  .page-about .eco-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

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

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

@media (prefers-reduced-motion: reduce) {
  .page-about .team-bar,
  .page-about .eco-card,
  .page-about .vtl__ver {
    transition: none;
  }

  .page-about .team-bar:hover,
  .page-about .eco-card:hover {
    transform: none;
  }
}
<<<END>>>