.page-about {
  --about-soft: rgba(17, 28, 30, 0.74);
  --about-hair: rgba(14, 79, 92, 0.18);
  background: var(--snow);
  color: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(1.1rem, 4vw, 1.9rem) 0 clamp(3.4rem, 9vw, 5.6rem);
  color: var(--snow);
  background:
    radial-gradient(120% 90% at 88% 8%, rgba(182, 243, 107, 0.16) 0%, rgba(182, 243, 107, 0) 58%),
    linear-gradient(156deg, var(--qing) 0%, var(--qing-deep) 56%, var(--rock) 100%);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: auto 0 -1px 0;
  height: clamp(26px, 6vw, 62px);
  background: var(--snow);
  clip-path: polygon(0 100%, 100% 0, 100% 100%);
}

.page-about .about-hero .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-hero .breadcrumb__item {
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: rgba(247, 251, 249, 0.72);
}

.page-about .about-hero .breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  margin-right: 0.4rem;
  color: rgba(247, 251, 249, 0.42);
}

.page-about .about-hero .breadcrumb__link {
  color: var(--ice);
  text-decoration: none;
  border-bottom: 1px solid rgba(221, 233, 230, 0.4);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(1.6rem, 5vw, 2.8rem);
  margin-top: clamp(1.4rem, 4vw, 2.4rem);
}

.page-about .about-hero h1 {
  margin: 0.55rem 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.95rem, 6.6vw, 3.9rem);
  line-height: 1.1;
  letter-spacing: 0.04em;
}

.page-about .about-hero__lead {
  max-width: 44ch;
  margin: 1rem 0 0;
  font-size: clamp(0.98rem, 2.4vw, 1.1rem);
  line-height: 1.85;
  color: rgba(247, 251, 249, 0.88);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.5rem;
}

.page-about .about-hero__figure {
  position: relative;
  margin: 0;
}

.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  clip-path: polygon(0 0, 100% 3%, 100% 100%, 0 96%);
  box-shadow: 0 30px 60px -46px rgba(0, 0, 0, 0.9);
}

.page-about .about-hero__caption {
  margin-top: 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: rgba(221, 233, 230, 0.78);
}

/* ---------- 主体分栏 ---------- */
.page-about .about-body {
  display: grid;
  gap: clamp(2rem, 5vw, 3.2rem);
  padding: clamp(2rem, 6vw, 4rem) 0 clamp(1.6rem, 4vw, 2.6rem);
}

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

.page-about .about-section {
  padding-bottom: clamp(1.6rem, 4vw, 2.4rem);
}

.page-about .about-section + .about-section {
  margin-top: clamp(1.8rem, 5vw, 3rem);
  padding-top: clamp(1.8rem, 5vw, 3rem);
  border-top: 1px solid var(--about-hair);
}

.page-about .about-section h2 {
  margin: 0.5rem 0 0.9rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.4rem, 4.2vw, 2.15rem);
  line-height: 1.28;
  letter-spacing: 0.03em;
  color: var(--rock);
}

.page-about .about-section__intro {
  margin: 0 0 1.4rem;
  max-width: 60ch;
  font-size: 0.97rem;
  line-height: 1.85;
  color: var(--about-soft);
}

.page-about .about-section .prose p {
  margin: 0 0 1rem;
  font-size: 0.97rem;
  line-height: 1.85;
  color: var(--about-soft);
}

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

.page-about .about-stamp {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(2.6rem, 11vw, 4.6rem);
  font-weight: 700;
  line-height: 0.9;
  letter-spacing: -0.03em;
  color: rgba(14, 79, 92, 0.14);
}

/* ---------- 演进图与标签页 ---------- */
.page-about .about-chart {
  margin: 0.4rem 0 0.2rem;
  padding: 0.6rem 0.4rem;
  background: linear-gradient(180deg, rgba(221, 233, 230, 0.5), rgba(221, 233, 230, 0));
  border-left: 3px solid var(--orange);
}

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

.page-about .about-chart__base {
  stroke: var(--silver);
  stroke-width: 1.5;
  stroke-dasharray: 6 8;
}

.page-about .about-chart__line {
  fill: none;
  stroke: var(--orange);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.page-about .about-chart__dot {
  fill: var(--qing);
  stroke: var(--lime);
  stroke-width: 3;
}

.page-about .about-chart__dot--end {
  fill: var(--orange);
  stroke: var(--rock);
}

.page-about .about-chart__cap {
  margin: 0.3rem 0 1.4rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--qing);
}

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

.page-about .about-rail {
  display: flex;
  gap: 0.45rem;
  padding-bottom: 0.55rem;
  margin-bottom: 1.1rem;
  overflow-x: auto;
  border-bottom: 1px solid var(--about-hair);
  scrollbar-width: thin;
}

.page-about .about-rail__btn {
  flex: 0 0 auto;
  padding: 0.5rem 0.95rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  color: var(--qing);
  background: var(--ice);
  border: 1px solid transparent;
  border-radius: 999px;
  cursor: pointer;
  transition: background 200ms var(--ease), color 200ms var(--ease);
}

.page-about .about-rail__btn[aria-selected="true"] {
  color: var(--ink);
  background: var(--orange);
  border-color: var(--orange-deep);
}

.page-about .about-rail__btn:focus-visible {
  outline: 2px solid var(--navy);
  outline-offset: 2px;
}

.page-about .about-panel {
  padding: 0.2rem 0 0.2rem 0.95rem;
  border-left: 3px solid var(--lime);
}

.page-about .about-panel + .about-panel {
  margin-top: 1.3rem;
}

.page-about .about-panel__year {
  display: block;
  margin: 0 0 0.25rem;
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  color: var(--orange-deep);
}

.page-about .about-panel h3 {
  margin: 0 0 0.45rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  color: var(--rock);
}

.page-about .about-panel p:not(.about-panel__year) {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--about-soft);
}

/* ---------- 运营节奏 ---------- */
.page-about .about-cadence {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-cadence li {
  display: grid;
  gap: 0.35rem;
  padding: 1rem 0;
  border-top: 1px dashed var(--about-hair);
}

.page-about .about-cadence li:last-child {
  border-bottom: 1px dashed var(--about-hair);
}

.page-about .about-cadence__time {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--orange-deep);
}

.page-about .about-cadence__body h3 {
  margin: 0 0 0.3rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1rem;
  color: var(--rock);
}

.page-about .about-cadence__body p {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.8;
  color: var(--about-soft);
}

/* ---------- 团队 ---------- */
.page-about .about-team__figure {
  margin: 0 0 1.1rem;
}

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

.page-about .about-team__figure .media-frame__caption {
  margin-top: 0.6rem;
  font-size: 0.76rem;
  line-height: 1.6;
  color: var(--silver);
}

.page-about .about-team__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(96px, 1fr));
  gap: 0.6rem;
  margin: 1.2rem 0 0;
}

.page-about .about-team__stats > div {
  padding: 0.8rem 0.9rem;
  background: var(--ice);
  border-left: 3px solid var(--qing);
}

.page-about .about-team__stats dt {
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  color: var(--qing);
}

.page-about .about-team__stats dd {
  margin: 0.3rem 0 0;
  font-size: 1.8rem;
  font-weight: 700;
  line-height: 1;
  color: var(--rock);
}

.page-about .about-team__note {
  margin: 1rem 0 0;
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--about-soft);
}

/* ---------- 侧边速览 ---------- */
.page-about .about-aside {
  min-width: 0;
}

.page-about .about-aside__card {
  padding: 1.2rem 1.1rem 1.3rem;
  border: 1px solid var(--about-hair);
  border-top: 4px solid var(--orange);
  background: var(--snow);
  box-shadow: 0 28px 48px -42px rgba(7, 47, 54, 0.85);
}

.page-about .about-aside__list {
  margin: 0.75rem 0 0;
}

.page-about .about-aside__list > div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.8rem;
  padding: 0.55rem 0;
  border-bottom: 1px dashed var(--about-hair);
}

.page-about .about-aside__list dt {
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  color: var(--qing);
}

.page-about .about-aside__list dd {
  margin: 0;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--rock);
}

.page-about .about-aside__note {
  margin: 0.9rem 0 1rem;
  font-size: 0.82rem;
  line-height: 1.75;
  color: var(--about-soft);
}

.page-about .about-aside__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* ---------- 覆盖与合作 ---------- */
.page-about .about-net {
  padding: clamp(2.4rem, 7vw, 4.4rem) 0;
  background: linear-gradient(180deg, var(--ice) 0%, rgba(221, 233, 230, 0.35) 100%);
  border-top: 1px solid var(--about-hair);
  border-bottom: 1px solid var(--about-hair);
}

.page-about .about-net h2 {
  margin: 0.45rem 0 0.8rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.4rem, 4.4vw, 2.2rem);
  line-height: 1.26;
  letter-spacing: 0.03em;
  color: var(--rock);
}

.page-about .about-net__intro {
  max-width: 62ch;
  margin: 0;
  font-size: 0.96rem;
  line-height: 1.85;
  color: var(--about-soft);
}

.page-about .about-net__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.7rem;
  margin: clamp(1.4rem, 4vw, 2.2rem) 0;
}

.page-about .about-net__stat {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 1rem 0.9rem;
  background: var(--snow);
  border-bottom: 3px solid var(--qing);
}

.page-about .about-net__stat:nth-child(2) {
  border-bottom-color: var(--orange);
}

.page-about .about-net__stat:nth-child(4) {
  border-bottom-color: var(--lime);
}

.page-about .about-net__num {
  font-size: clamp(1.9rem, 6vw, 2.5rem);
  font-weight: 700;
  line-height: 1;
  color: var(--rock);
}

.page-about .about-net__unit {
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--qing);
}

.page-about .about-net__split {
  display: grid;
  gap: 1.3rem;
}

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

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

.page-about .about-net__figure .media-frame__caption {
  margin-top: 0.6rem;
  font-size: 0.76rem;
  line-height: 1.6;
  color: var(--qing);
}

.page-about .about-net__text p {
  margin: 0 0 0.85rem;
  font-size: 0.94rem;
  line-height: 1.85;
  color: var(--about-soft);
}

.page-about .about-net__btn {
  margin-top: 0.3rem;
}

/* ---------- 联系 ---------- */
.page-about .about-connect {
  padding: clamp(2.4rem, 7vw, 4.2rem) 0 clamp(2.8rem, 8vw, 4.6rem);
  color: var(--snow);
  background:
    radial-gradient(90% 80% at 8% 0%, rgba(255, 106, 43, 0.22) 0%, rgba(255, 106, 43, 0) 60%),
    linear-gradient(160deg, var(--rock) 0%, var(--qing-deep) 100%);
}

.page-about .about-connect__grid {
  display: grid;
  gap: 1.6rem;
}

.page-about .about-connect h2 {
  margin: 0.45rem 0 0.8rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.35rem, 4.4vw, 2.1rem);
  line-height: 1.28;
  letter-spacing: 0.03em;
  color: var(--snow);
}

.page-about .about-connect__lead {
  max-width: 52ch;
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.85;
  color: rgba(247, 251, 249, 0.82);
}

.page-about .about-connect__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.3rem;
}

.page-about .about-connect__list {
  margin: 0;
  padding: 1rem 1rem 1.1rem;
  border: 1px solid rgba(221, 233, 230, 0.28);
  border-left: 4px solid var(--lime);
  background: rgba(7, 47, 54, 0.55);
}

.page-about .about-connect__list > div {
  display: flex;
  flex-wrap: wrap;
  gap: 0.2rem 0.9rem;
  padding: 0.5rem 0;
  border-bottom: 1px dashed rgba(221, 233, 230, 0.22);
}

.page-about .about-connect__list > div:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .about-connect__list dt {
  flex: 0 0 5.2em;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--lime);
}

.page-about .about-connect__list dd {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--snow);
  word-break: break-word;
}

@media (min-width: 700px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-about .about-cadence li {
    grid-template-columns: 8.5rem minmax(0, 1fr);
    align-items: baseline;
    gap: 1rem;
  }

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

  .page-about .about-net__split {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: start;
    gap: 1.6rem;
  }

  .page-about .about-connect__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
    gap: 2rem;
  }
}

@media (min-width: 1000px) {
  .page-about .about-body {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
    column-gap: clamp(2rem, 4vw, 3.4rem);
  }

  .page-about .about-aside {
    position: sticky;
    top: 6.5rem;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    column-gap: clamp(2rem, 4vw, 3.4rem);
  }

  .page-about .about-stamp {
    font-size: 4.8rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-rail__btn {
    transition: none;
  }
}
<<<END>>>