.page-about {
  --about-line: 1px solid rgba(242, 244, 247, 0.10);
  --about-line-soft: 1px solid rgba(242, 244, 247, 0.07);
  display: block;
  padding-bottom: clamp(48px, 8vw, 104px);
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumbs {
  padding-top: clamp(18px, 3vw, 34px);
}

.page-about .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.05em;
}

.page-about .breadcrumbs__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.page-about .breadcrumbs__item + .breadcrumbs__item::before {
  content: "/";
  color: var(--c-rail);
}

.page-about .breadcrumbs__link {
  color: var(--c-mist);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

.page-about .breadcrumbs__link:hover {
  color: var(--c-volt);
}

.page-about .breadcrumbs__current {
  color: var(--c-chalk);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-top: clamp(22px, 4vw, 46px);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 46px);
}

@media (min-width: 940px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(280px, 0.9fr);
    align-items: end;
    gap: clamp(34px, 5vw, 76px);
  }
}

.page-about .about-hero h1 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.04;
  font-size: clamp(2.15rem, 5.6vw, 4.3rem);
  color: var(--c-chalk);
}

.page-about .about-hero__lede {
  margin: 20px 0 0;
  max-width: 48ch;
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: clamp(1rem, 1.35vw, 1.12rem);
  line-height: 1.9;
  color: var(--c-mist);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 3vw, 34px);
}

/* 概览玻璃卡 */
.page-about .about-facts {
  padding: clamp(20px, 2.4vw, 28px);
  border-radius: var(--radius-l);
  border: var(--about-line);
  background-image: radial-gradient(120% 110% at 100% 0%, rgba(200, 16, 46, 0.20), transparent 58%),
                    radial-gradient(120% 110% at 0% 100%, rgba(0, 229, 208, 0.12), transparent 60%);
}

.page-about .about-facts__title {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--c-gold);
}

.page-about .about-facts__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 16px;
}

.page-about .about-facts__item {
  display: flex;
  flex-direction: column;
  gap: 7px;
  min-width: 0;
}

.page-about .about-facts__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.35rem, 2.2vw, 1.75rem);
  line-height: 1;
  color: var(--c-chalk);
}

.page-about .about-facts__label {
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--c-mist);
}

/* 首屏通栏图 */
.page-about .about-hero__media {
  margin-top: clamp(30px, 5vw, 62px);
  border-radius: var(--radius-l);
  overflow: hidden;
  border: var(--about-line);
  background: linear-gradient(115deg, rgba(200, 16, 46, 0.22), rgba(0, 229, 208, 0.08) 72%, transparent);
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}

@media (min-width: 800px) {
  .page-about .about-hero__media img {
    -webkit-mask-image: linear-gradient(90deg, #000 50%, rgba(0, 0, 0, 0) 100%);
    mask-image: linear-gradient(90deg, #000 50%, rgba(0, 0, 0, 0) 100%);
  }
}

/* ---------- 页内索引 + 正文骨架 ---------- */
.page-about .about-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 52px);
  padding-top: clamp(56px, 8vw, 106px);
}

@media (min-width: 1040px) {
  .page-about .about-layout {
    grid-template-columns: 168px minmax(0, 1fr);
    gap: clamp(38px, 5vw, 86px);
  }
}

.page-about .about-index {
  display: flex;
  gap: 4px;
  overflow-x: auto;
  padding-bottom: 6px;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.page-about .about-index::-webkit-scrollbar {
  display: none;
}

@media (min-width: 1040px) {
  .page-about .about-index {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    position: sticky;
    top: calc(var(--bar-h) + 26px);
    align-self: start;
  }
}

.page-about .about-index__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 12px;
  border-left: 1px solid rgba(242, 244, 247, 0.14);
  border-radius: 0 var(--radius-s) var(--radius-s) 0;
  text-decoration: none;
  white-space: nowrap;
  font-size: 0.82rem;
  line-height: 1.4;
  color: var(--c-mist);
  transition: color 0.22s var(--ease), background 0.22s var(--ease), border-color 0.22s var(--ease);
}

.page-about .about-index__num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--c-gold);
  transition: color 0.22s var(--ease);
}

.page-about .about-index__link:hover {
  color: var(--c-chalk);
  border-left-color: var(--c-gold);
}

.page-about .about-index__link[data-active="true"] {
  color: var(--c-volt);
  border-left-color: var(--c-volt);
  background: linear-gradient(90deg, rgba(0, 229, 208, 0.10), rgba(0, 229, 208, 0));
}

.page-about .about-index__link[data-active="true"] .about-index__num {
  color: var(--c-volt);
}

@media (max-width: 1039px) {
  .page-about .about-index__link {
    border-left: 0;
    border-bottom: 1px solid rgba(242, 244, 247, 0.14);
    border-radius: var(--radius-s) var(--radius-s) 0 0;
  }
  .page-about .about-index__link:hover {
    border-left-color: transparent;
    border-bottom-color: var(--c-gold);
  }
  .page-about .about-index__link[data-active="true"] {
    border-left-color: transparent;
    border-bottom-color: var(--c-volt);
    background: linear-gradient(180deg, rgba(0, 229, 208, 0.10), rgba(0, 229, 208, 0));
  }
}

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

/* ---------- 章节通用 ---------- */
.page-about .about-chapter {
  padding-bottom: clamp(46px, 7vw, 94px);
  scroll-margin-top: calc(var(--bar-h) + 22px);
}

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

.page-about .about-chapter__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.022em;
  line-height: 1.16;
  font-size: clamp(1.5rem, 2.7vw, 2.15rem);
  color: var(--c-chalk);
}

.page-about .about-chapter__text {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--c-mist);
}

.page-about .about-quote {
  margin: clamp(26px, 4vw, 42px) 0;
  padding-left: clamp(18px, 3vw, 36px);
  border-left: 2px solid var(--c-red);
  max-width: 30ch;
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: clamp(1.15rem, 2.1vw, 1.55rem);
  line-height: 1.85;
  color: var(--c-chalk);
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline {
  margin-top: clamp(28px, 4vw, 46px);
}

.page-about .about-timeline__track {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-timeline__track::before {
  content: "";
  position: absolute;
  top: 0;
  left: 4px;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, rgba(232, 180, 74, 0.75), rgba(0, 229, 208, 0.35) 62%, rgba(242, 244, 247, 0.06));
}

.page-about .about-timeline__node {
  position: relative;
  padding-left: 28px;
  outline: none;
}

.page-about .about-timeline__node::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 9px;
  height: 9px;
  border-radius: 2px;
  background: var(--c-gold);
  transition: box-shadow 0.25s var(--ease), background 0.25s var(--ease);
}

.page-about .about-timeline__node:hover::before,
.page-about .about-timeline__node:focus-visible::before {
  background: var(--c-volt);
  box-shadow: 0 0 0 5px rgba(0, 229, 208, 0.16);
}

.page-about .about-timeline__year {
  display: block;
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: clamp(1.05rem, 1.7vw, 1.35rem);
  color: var(--c-gold);
}

.page-about .about-timeline__name {
  margin: 6px 0 0;
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--c-chalk);
}

.page-about .about-timeline__note {
  margin: 8px 0 0;
  max-width: 34ch;
  font-size: 0.86rem;
  line-height: 1.75;
  color: var(--c-mist);
}

@media (min-width: 760px) {
  .page-about .about-timeline__track {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 22px;
  }
  .page-about .about-timeline__track::before {
    top: 0;
    left: 0;
    right: 0;
    bottom: auto;
    width: auto;
    height: 1px;
    background: linear-gradient(90deg, rgba(232, 180, 74, 0.75), rgba(0, 229, 208, 0.4) 58%, rgba(242, 244, 247, 0.06));
  }
  .page-about .about-timeline__node {
    padding-left: 0;
    padding-top: 26px;
  }
  .page-about .about-timeline__node::before {
    top: -5px;
    left: 0;
  }
  .page-about .about-timeline__note {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height 0.36s var(--ease), opacity 0.36s var(--ease), margin-top 0.36s var(--ease);
  }
  .page-about .about-timeline__node:hover .about-timeline__note,
  .page-about .about-timeline__node:focus-visible .about-timeline__note,
  .page-about .about-timeline__node:focus-within .about-timeline__note {
    max-height: 180px;
    opacity: 1;
  }
}

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

/* ---------- 团队 ---------- */
.page-about .about-team {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 42px);
  margin-top: clamp(24px, 3.5vw, 38px);
}

@media (min-width: 880px) {
  .page-about .about-team {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.78fr);
    align-items: start;
  }
}

.page-about .about-team__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-team__item {
  padding: clamp(16px, 2vw, 22px);
  border-radius: var(--radius-m);
  border: var(--about-line);
  background: var(--c-bay);
}

.page-about .about-team__item:nth-child(1) {
  border-top: 2px solid var(--c-red);
}

.page-about .about-team__item:nth-child(2) {
  border-top: 2px solid var(--c-gold);
}

.page-about .about-team__item:nth-child(3) {
  border-top: 2px solid var(--c-volt);
}

.page-about .about-team__head {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.page-about .about-team__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--c-chalk);
}

.page-about .about-team__unit {
  font-size: 0.76rem;
  color: var(--c-mist);
}

.page-about .about-team__name {
  margin: 8px 0 6px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--c-chalk);
}

.page-about .about-team__desc {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.78;
  color: var(--c-mist);
}

.page-about .about-team__media {
  margin: 0;
  border-radius: var(--radius-l);
  overflow: hidden;
  border: var(--about-line);
  background: var(--c-bay);
}

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

/* ---------- 数据三步 ---------- */
.page-about .about-flow {
  list-style: none;
  margin: clamp(26px, 4vw, 42px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

@media (min-width: 880px) {
  .page-about .about-flow {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 38px;
  }
}

.page-about .about-flow__step {
  position: relative;
  padding: clamp(18px, 2.2vw, 26px);
  border-radius: var(--radius-m);
  border: var(--about-line);
  background-color: var(--c-bay);
  background-repeat: no-repeat;
}

.page-about .about-flow__step--a {
  background-image: radial-gradient(130% 110% at 0% 0%, rgba(200, 16, 46, 0.20), transparent 62%);
}

.page-about .about-flow__step--b {
  background-image: radial-gradient(130% 110% at 0% 0%, rgba(232, 180, 74, 0.17), transparent 62%);
}

.page-about .about-flow__step--c {
  background-image: radial-gradient(130% 110% at 0% 0%, rgba(0, 229, 208, 0.15), transparent 62%);
}

@media (min-width: 880px) {
  .page-about .about-flow__step:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 50%;
    right: -39px;
    width: 38px;
    height: 1px;
    background: linear-gradient(90deg, rgba(0, 229, 208, 0.55), rgba(0, 229, 208, 0));
    pointer-events: none;
  }
}

.page-about .about-flow__idx {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  color: var(--c-gold);
}

.page-about .about-flow__name {
  margin: 12px 0 8px;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.01em;
  font-size: 1.15rem;
  color: var(--c-chalk);
}

.page-about .about-flow__desc {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--c-mist);
}

/* ---------- 内容与范围 ---------- */
.page-about .about-scope {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-l);
  border: var(--about-line);
  padding: clamp(26px, 4vw, 54px);
}

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

.page-about .about-scope__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.16;
}

.page-about .about-scope__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 13, 16, 0.55), rgba(11, 13, 16, 0.94));
}

.page-about .about-scope > *:not(.about-scope__bg) {
  position: relative;
  z-index: 1;
}

.page-about .about-scope__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3.4vw, 42px);
  margin-top: clamp(24px, 3.5vw, 40px);
}

@media (min-width: 880px) {
  .page-about .about-scope__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: start;
  }
}

.page-about .about-content-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-about .about-content-list__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding-bottom: 16px;
  border-bottom: var(--about-line-soft);
}

.page-about .about-content-list__item:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .about-content-list__num {
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--c-gold);
}

.page-about .about-content-list__name {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  color: var(--c-chalk);
}

.page-about .about-content-list__desc {
  margin: 7px 0 0;
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--c-mist);
}

.page-about .about-scope__panel {
  padding: clamp(20px, 2.6vw, 28px);
  border-radius: var(--radius-l);
  border: var(--about-line);
  background: rgba(11, 13, 16, 0.62);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.page-about .about-scope__panel-title {
  margin: 0 0 16px;
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: 1.05rem;
  color: var(--c-gold);
}

.page-about .about-scope__panel-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-scope__panel-list li {
  position: relative;
  padding-left: 16px;
  font-size: 0.86rem;
  line-height: 1.8;
  color: var(--c-chalk);
}

.page-about .about-scope__panel-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 6px;
  height: 6px;
  border-radius: 1px;
  background: var(--c-volt);
}

.page-about .about-scope__panel-note {
  margin: 18px 0 0;
  padding-top: 16px;
  border-top: var(--about-line-soft);
  font-size: 0.8rem;
  line-height: 1.75;
  color: var(--c-mist);
}

/* ---------- 长期价值 ---------- */
.page-about .about-stay {
  list-style: none;
  margin: clamp(26px, 4vw, 42px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

@media (min-width: 800px) {
  .page-about .about-stay {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }
}

.page-about .about-stay__item {
  padding: clamp(20px, 2.6vw, 28px);
  border-radius: var(--radius-l);
  border: var(--about-line);
  background: linear-gradient(180deg, rgba(31, 35, 43, 0.92), rgba(11, 13, 16, 0.92));
}

.page-about .about-stay__num {
  display: block;
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.5rem;
  line-height: 1;
  color: rgba(232, 180, 74, 0.85);
}

.page-about .about-stay__name {
  margin: 0 0 8px;
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--c-chalk);
}

.page-about .about-stay__desc {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--c-mist);
}

.page-about .about-stay__cta {
  max-width: 56ch;
}

.page-about .about-stay__cta a {
  color: var(--c-volt);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 208, 0.35);
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-about .about-stay__cta a:hover {
  color: var(--c-gold);
  border-bottom-color: var(--c-gold);
}
<<<END>>>