.page-about {
  --about-gap-s: 24px;
  --about-gap-m: 48px;
  --about-gap-l: clamp(56px, 9vw, 104px);
  --about-line: rgba(11, 31, 58, 0.12);
  --about-cut: 18px;
  background: var(--xy-white);
  color: var(--xy-ink);
  overflow-x: hidden;
}

.page-about .wrap {
  width: min(calc(100% - 40px), 1180px);
  margin-inline: auto;
}

@media (min-width: 768px) {
  .page-about .wrap {
    width: min(calc(100% - 80px), 1180px);
  }
}

/* ---------- 首屏 ---------- */
.page-about .hero {
  position: relative;
  padding-block: 22px var(--about-gap-l);
  background:
    radial-gradient(120% 90% at 92% 2%, rgba(242, 140, 40, 0.13) 0%, rgba(242, 140, 40, 0) 58%),
    radial-gradient(90% 70% at 2% 100%, rgba(62, 142, 126, 0.10) 0%, rgba(62, 142, 126, 0) 60%),
    var(--xy-white);
  overflow: hidden;
}

.page-about .hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 9px;
  background: linear-gradient(
    90deg,
    var(--xy-orange) 0 42%,
    var(--xy-navy) 42% 76%,
    var(--xy-barley) 76% 100%
  );
  clip-path: polygon(0 6px, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.page-about .hero__grid {
  display: grid;
  gap: var(--about-gap-m);
  margin-top: 28px;
}

.page-about .hero__kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--xy-rock);
}

.page-about .hero__kicker-line {
  display: block;
  width: 30px;
  height: 2px;
  background: var(--xy-orange);
}

.page-about .hero__title {
  margin: 0;
  font-size: clamp(30px, 8.6vw, 62px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--xy-ink);
}

.page-about .hero__title .hl {
  display: inline-block;
  color: var(--xy-orange);
}

.page-about .hero__lead {
  margin: 22px 0 0;
  max-width: 38ch;
  font-size: clamp(16px, 4vw, 18px);
  line-height: 1.8;
  color: var(--xy-navy);
}

.page-about .hero__lead--sub {
  margin-top: 14px;
  font-size: 15px;
  color: var(--xy-rock);
}

.page-about .hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-about .hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 36px 0 0;
  padding: 0;
  list-style: none;
  background: var(--about-line);
  border-block: 1px solid var(--about-line);
}

.page-about .hero__stat {
  padding: 16px 14px 16px 0;
  background: var(--xy-white);
}

.page-about .hero__stat-num {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 30px;
  font-weight: 700;
  line-height: 1.05;
  color: var(--xy-navy);
}

.page-about .hero__stat-key {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--xy-rock);
}

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

.page-about .hero__shot {
  position: relative;
  overflow: hidden;
  background: var(--xy-mist);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 30px), calc(100% - 30px) 100%, 0 100%);
}

.page-about .hero__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 2 / 3;
  object-fit: cover;
}

.page-about .hero__caption {
  margin-top: 12px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--xy-rock);
}

@media (min-width: 640px) {
  .page-about .hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-about .hero__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(280px, 0.8fr);
    gap: clamp(40px, 5vw, 80px);
    align-items: end;
    margin-top: 44px;
  }
  .page-about .hero__figure {
    transform: translateY(-10px);
  }
}

/* ---------- 章节骨架 ---------- */
.page-about .sec {
  position: relative;
  padding-block: var(--about-gap-l);
  overflow: hidden;
}

.page-about .sec--mist {
  background: var(--xy-mist);
}

.page-about .sec--navy {
  background: var(--xy-navy);
  color: var(--xy-on-navy);
}

.page-about .sec--navy::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    115deg,
    rgba(255, 255, 255, 0.045) 0 1px,
    transparent 1px 28px
  );
  pointer-events: none;
}

.page-about .sec--navy > .wrap {
  position: relative;
  z-index: 1;
}

.page-about .sec-head {
  max-width: 44rem;
  margin-bottom: var(--about-gap-m);
}

.page-about .sec-head__num {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--xy-rock);
}

.page-about .sec-head__num::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--xy-orange);
}

.page-about .sec-head__num span {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  color: var(--xy-orange);
}

.page-about .sec-head__title {
  margin: 0;
  font-size: clamp(26px, 6.6vw, 46px);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -0.015em;
  color: var(--xy-ink);
}

.page-about .sec-head__lead {
  margin: 18px 0 0;
  max-width: 40ch;
  font-size: clamp(15px, 3.8vw, 17px);
  line-height: 1.85;
  color: var(--xy-rock);
}

.page-about .sec--navy .sec-head__num {
  color: var(--xy-on-navy-dim);
}

.page-about .sec--navy .sec-head__title {
  color: var(--xy-white);
}

.page-about .sec--navy .sec-head__lead {
  color: var(--xy-on-navy-dim);
}

/* ---------- 定位：正文 + 时段旁注 ---------- */
.page-about .split {
  display: grid;
  gap: var(--about-gap-m);
}

.page-about .copy p {
  margin: 0 0 18px;
  font-size: clamp(15px, 3.8vw, 17px);
  line-height: 1.9;
  color: var(--xy-ink);
}

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

.page-about .tick-wrap {
  align-self: start;
}

.page-about .tick {
  list-style: none;
  margin: 0;
  padding: 22px 20px;
  background: var(--xy-white);
  border-left: 4px solid var(--xy-orange);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
}

.page-about .tick li {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 12px;
  padding: 13px 0;
  border-bottom: 1px dashed var(--about-line);
  font-size: 14px;
  line-height: 1.75;
  color: var(--xy-navy);
}

.page-about .tick li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .tick__time {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  color: var(--xy-orange-deep);
}

.page-about .tick__foot {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--xy-rock);
}

@media (min-width: 900px) {
  .page-about .split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(40px, 5vw, 72px);
    align-items: start;
  }
}

/* ---------- 团队 ---------- */
.page-about .team__banner {
  margin: 0 0 var(--about-gap-m);
  overflow: hidden;
  background: var(--xy-mist);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 28px), calc(100% - 28px) 100%, 0 100%);
}

.page-about .team__banner img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 7 / 4;
  object-fit: cover;
}

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

.page-about .team-card {
  position: relative;
  padding: 32px 22px 26px;
  background: var(--xy-white);
  border: 1px solid var(--about-line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.page-about .team-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  background: var(--about-accent, var(--xy-orange));
}

.page-about .team-card--data {
  --about-accent: var(--xy-orange);
}

.page-about .team-card--product {
  --about-accent: var(--xy-sky);
}

.page-about .team-card--ops {
  --about-accent: var(--xy-barley);
}

.page-about .team-card:hover {
  border-color: var(--about-accent);
  transform: translateY(-3px);
}

.page-about .team-card__num {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 34px;
  font-weight: 700;
  line-height: 1;
  color: var(--about-accent);
}

.page-about .team-card__role {
  margin: 12px 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--xy-ink);
}

.page-about .team-card__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--xy-rock);
}

.page-about .team__note {
  margin: 28px 0 0;
  padding-left: 16px;
  border-left: 2px solid var(--xy-barley);
  font-size: 14px;
  line-height: 1.85;
  color: var(--xy-rock);
}

@media (min-width: 780px) {
  .page-about .team__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }
}

/* ---------- 数据覆盖 ---------- */
.page-about .data {
  display: grid;
  gap: var(--about-gap-m);
}

.page-about .data__bars {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .bar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-areas:
    "label num"
    "track track";
  gap: 8px 12px;
  padding: 16px 0;
  border-bottom: 1px solid var(--about-line);
}

.page-about .bar:first-child {
  border-top: 1px solid var(--about-line);
}

.page-about .bar__label {
  grid-area: label;
  align-self: center;
  font-size: 15px;
  font-weight: 600;
  color: var(--xy-navy);
}

.page-about .bar__num {
  grid-area: num;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--xy-orange-deep);
}

.page-about .bar__track {
  grid-area: track;
  display: block;
  height: 6px;
  background: rgba(11, 31, 58, 0.08);
  overflow: hidden;
}

.page-about .bar__fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--xy-orange) 0%, var(--xy-orange-deep) 100%);
  transform-origin: left center;
  animation: about-bar-in 0.7s cubic-bezier(0.22, 0.7, 0.3, 1) both;
}

@keyframes about-bar-in {
  from {
    transform: scaleX(0);
  }
  to {
    transform: scaleX(1);
  }
}

.page-about .data__aside {
  padding: 24px 22px;
  background: var(--xy-white);
  border-top: 4px solid var(--xy-sky);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
}

.page-about .data__aside p {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.9;
  color: var(--xy-rock);
}

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

@media (min-width: 900px) {
  .page-about .data {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(40px, 5vw, 72px);
    align-items: start;
  }
}

/* ---------- 版本时间线 ---------- */
.page-about .tl {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0 0 0 30px;
}

.page-about .tl::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 10px;
  bottom: 14px;
  width: 2px;
  background: linear-gradient(180deg, var(--xy-orange) 0%, rgba(255, 255, 255, 0.18) 100%);
}

.page-about .tl__item {
  position: relative;
  padding-bottom: 36px;
}

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

.page-about .tl__dot {
  position: absolute;
  left: -30px;
  top: 5px;
  width: 16px;
  height: 16px;
  background: var(--xy-navy);
  border: 2px solid var(--xy-orange);
  transform: rotate(45deg);
}

.page-about .tl__item--current .tl__dot {
  left: -33px;
  top: 2px;
  width: 22px;
  height: 22px;
  background: var(--xy-orange);
  border-color: var(--xy-white);
  box-shadow: 0 0 0 6px rgba(242, 140, 40, 0.2);
}

.page-about .tl__ver {
  display: inline-block;
  margin: 0 0 10px;
  padding: 3px 10px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--xy-navy);
  background: var(--xy-sand);
}

.page-about .tl__item--current .tl__ver {
  background: var(--xy-orange);
  font-weight: 700;
}

.page-about .tl__title {
  margin: 0 0 8px;
  font-size: clamp(18px, 4.4vw, 24px);
  font-weight: 800;
  line-height: 1.35;
  color: var(--xy-white);
}

.page-about .tl__text {
  margin: 0;
  max-width: 48ch;
  font-size: 15px;
  line-height: 1.9;
  color: var(--xy-on-navy-dim);
}

/* ---------- 合作与认可 ---------- */
.page-about .partners__shot {
  margin: 0 0 var(--about-gap-m);
  overflow: hidden;
  background: var(--xy-mist);
  clip-path: polygon(28px 0, 100% 0, 100% 100%, 0 100%, 0 28px);
}

.page-about .partners__shot img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .partners__grid {
  display: grid;
  gap: 18px;
}

.page-about .pcard {
  padding: 26px 22px;
  background: var(--xy-mist);
  border-left: 4px solid var(--xy-sky);
}

.page-about .pcard:nth-child(2) {
  border-left-color: var(--xy-barley);
}

.page-about .pcard:nth-child(3) {
  border-left-color: var(--xy-orange);
}

.page-about .pcard h3 {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 700;
  color: var(--xy-navy);
}

.page-about .pcard p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--xy-rock);
}

.page-about .honor {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 22px;
  margin-top: var(--about-gap-m);
  padding: 20px 24px;
  background: var(--xy-sand);
}

.page-about .honor__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 34px;
  font-weight: 700;
  line-height: 1;
  color: var(--xy-orange-deep);
}

.page-about .honor__text {
  flex: 1 1 260px;
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--xy-navy);
}

@media (min-width: 780px) {
  .page-about .partners__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 坚持的几条 ---------- */
.page-about .pledge {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .pledge__item {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 8px 0;
  padding: 26px 0;
  border-top: 1px solid var(--about-line);
}

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

.page-about .pledge__num {
  grid-row: span 2;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 15px;
  font-weight: 700;
  color: var(--xy-orange);
  padding-top: 5px;
}

.page-about .pledge__title {
  margin: 0 0 8px;
  font-size: clamp(18px, 4.4vw, 22px);
  font-weight: 800;
  line-height: 1.4;
  color: var(--xy-ink);
}

.page-about .pledge__text {
  margin: 0;
  max-width: 54ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--xy-rock);
}

/* ---------- 收尾 ---------- */
.page-about .closing {
  position: relative;
  padding-block: var(--about-gap-l);
  background: var(--xy-navy);
  color: var(--xy-white);
  overflow: hidden;
}

.page-about .closing::after {
  content: "";
  position: absolute;
  right: -70px;
  top: -70px;
  width: 280px;
  height: 280px;
  background: radial-gradient(circle, rgba(242, 140, 40, 0.32) 0%, rgba(242, 140, 40, 0) 70%);
  pointer-events: none;
}

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

.page-about .closing__title {
  margin: 0;
  font-size: clamp(24px, 6vw, 40px);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--xy-white);
}

.page-about .closing__text {
  margin: 16px 0 0;
  max-width: 42ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--xy-on-navy-dim);
}

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

@media (min-width: 900px) {
  .page-about .closing__inner {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.8fr);
    align-items: center;
    gap: 48px;
  }
  .page-about .closing__actions {
    justify-content: flex-end;
  }
}

/* ---------- 动效退化 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about .bar__fill {
    animation: none;
  }
  .page-about .team-card {
    transition: none;
  }
}
<<<END>>>