.page-about {
  background: var(--ink);
  color: var(--fog);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 28px 0 48px;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -180px;
  right: -180px;
  width: 520px;
  height: 520px;
  background: radial-gradient(circle, rgba(255, 106, 26, 0.2), rgba(76, 224, 210, 0.06) 46%, transparent 70%);
  pointer-events: none;
}

.page-about .about-hero__grid {
  position: relative;
}

.page-about .about-hero__kicker {
  margin: 0 0 22px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ash);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.page-about .about-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(38px, 9.2vw, 92px);
  font-weight: 800;
  line-height: 0.96;
  letter-spacing: -0.02em;
  color: var(--fog);
  transform: rotate(-3deg);
  transform-origin: left center;
  padding: 6px 12px 10px 0;
}

.page-about .about-hero__title br + br {
  display: none;
}

.page-about .about-hero__lead {
  margin: 26px 0 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--ash);
}

.page-about .about-hero__facts {
  margin: 32px 0 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-hero__fact {
  background: var(--ink);
  padding: 14px 18px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
}

.page-about .about-hero__fact dt {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ash);
}

.page-about .about-hero__fact dd {
  margin: 0;
  font-family: var(--font-num);
  font-size: 20px;
  color: var(--fog);
  white-space: nowrap;
}

.page-about .about-hero__fact dd .num {
  font-family: var(--font-num);
  font-size: 34px;
  line-height: 1;
  color: var(--orange);
  font-variant-numeric: tabular-nums;
  margin-right: 4px;
}

/* ---------- 起点 ---------- */
.page-about .about-origin__body {
  max-width: 66ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ash);
}

.page-about .about-origin__body p {
  margin: 0 0 1.2em;
}

.page-about .about-origin__pull {
  margin: 32px 0 0;
  padding: 18px 0 18px 22px;
  border-left: 2px solid var(--orange);
  font-family: var(--font-serif);
  font-size: 18px;
  line-height: 1.7;
  color: var(--fog);
}

/* ---------- 三条主线 ---------- */
.page-about .about-lines__list {
  display: grid;
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .about-line {
  background: var(--ink);
  display: grid;
  gap: 12px;
  padding: 26px 0;
}

.page-about .about-line__idx {
  font-family: var(--font-num);
  font-size: 14px;
  letter-spacing: 0.1em;
  color: var(--orange);
}

.page-about .about-line__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--fog);
}

.page-about .about-line__meta {
  margin: 6px 0 0;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-about .about-line__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ash);
  max-width: 58ch;
}

.page-about .about-lines__more {
  margin: 26px 0 0;
  font-size: 15px;
}

/* ---------- 团队反色块 ---------- */
.page-about .about-team {
  padding-top: 20px;
  padding-bottom: 20px;
}

.page-about .about-team__panel {
  background: var(--bone);
  color: var(--ink);
  padding: 56px 20px;
  clip-path: polygon(0 22px, 100% 0, 100% calc(100% - 22px), 0 100%);
}

.page-about .about-team__marker {
  margin: 0 0 14px;
  font-family: var(--font-serif);
  font-size: 15px;
  letter-spacing: 0.06em;
  color: #7a5a34;
}

.page-about .about-team__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(26px, 5vw, 44px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-about .about-team__lead {
  margin: 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.78;
  color: #3a4256;
}

.page-about .about-team__grid {
  margin: 32px 0 0;
  display: grid;
  gap: 28px;
}

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

.page-about .about-team__media .media__caption {
  color: #5b6478;
}

.page-about .about-team__roles {
  display: grid;
  gap: 1px;
  background: rgba(11, 16, 32, 0.14);
}

.page-about .about-role {
  background: var(--bone);
  padding: 18px 0 18px 16px;
  border-left: 2px solid transparent;
  transition: border-color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}

.page-about .about-role__num {
  margin: 0;
  font-family: var(--font-num);
  font-size: 46px;
  line-height: 0.9;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.page-about .about-role__name {
  margin: 8px 0 8px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  color: var(--ink);
}

.page-about .about-role__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: #3a4256;
  max-width: 52ch;
}

.page-about .about-team__note {
  margin: 26px 0 0;
  font-size: 13px;
  color: #5b6478;
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline__banner {
  margin: 0 0 30px;
}

.page-about .tl__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 30px;
}

.page-about .tl__nav a {
  font-family: var(--font-num);
  font-size: 14px;
  letter-spacing: 0.08em;
  padding: 6px 12px;
  border: 1px solid var(--line);
  color: var(--ash);
  text-decoration: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .tl__nav a:hover,
.page-about .tl__nav a:focus-visible {
  border-color: var(--orange);
  color: var(--orange);
}

.page-about .tl {
  list-style: none;
  margin: 0;
  padding: 0 0 0 32px;
  position: relative;
}

.page-about .tl::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 18px;
  bottom: 18px;
  width: 1px;
  background: var(--line);
}

.page-about .tl__item {
  position: relative;
  padding: 18px 0 26px;
  display: grid;
  gap: 8px;
  scroll-margin-top: 110px;
}

.page-about .tl__item::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 30px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--ink);
  transition: border-color 0.5s var(--ease), background-color 0.5s var(--ease), box-shadow 0.5s var(--ease);
}

.page-about .tl__item.is-in::before {
  border-color: var(--orange);
  box-shadow: 0 0 0 4px rgba(255, 106, 26, 0.12);
}

.page-about .tl__item:target::before {
  border-color: var(--orange);
  background: var(--orange);
  box-shadow: 0 0 0 5px rgba(255, 106, 26, 0.16);
}

.page-about .tl__year {
  margin: 0;
  font-family: var(--font-num);
  font-size: 40px;
  line-height: 0.9;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.01em;
  color: var(--orange);
}

.page-about .tl__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 800;
  color: var(--fog);
}

.page-about .tl__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ash);
  max-width: 58ch;
}

.page-about .about-timeline__more {
  margin: 24px 0 0;
  font-size: 15px;
}

/* ---------- 资质 ---------- */
.page-about .about-cred__list {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-cred__item {
  background: var(--ink-2);
  padding: 22px 20px;
}

.page-about .about-cred__label {
  margin: 0 0 10px;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--wood);
}

.page-about .about-cred__name {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
  line-height: 1.4;
  color: var(--fog);
}

.page-about .about-cred__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ash);
}

.page-about .about-cred__stat {
  margin: 26px 0 0;
  padding: 20px;
  border: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 22px;
}

.page-about .about-cred__stat-num {
  margin: 0;
  font-family: var(--font-num);
  font-size: clamp(44px, 11vw, 76px);
  line-height: 0.88;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-about .about-cred__stat-text {
  margin: 0;
  flex: 1 1 220px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ash);
}

/* ---------- 合作生态 ---------- */
.page-about .about-eco__grid {
  display: grid;
  gap: 30px;
}

.page-about .about-eco__list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .about-eco__item {
  background: var(--ink);
  padding: 20px 0;
}

.page-about .about-eco__item-title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
  color: var(--fog);
  display: flex;
  align-items: baseline;
  gap: 8px;
  flex-wrap: wrap;
}

.page-about .about-eco__item-title .num {
  font-family: var(--font-num);
  font-size: 34px;
  line-height: 0.95;
  color: var(--orange);
  font-variant-numeric: tabular-nums;
}

.page-about .about-eco__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--ash);
  max-width: 56ch;
}

.page-about .about-eco__more {
  margin: 24px 0 0;
  font-size: 15px;
}

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

/* ---------- 结尾 ---------- */
.page-about .about-cta {
  border-top: 1px solid var(--line);
  padding: 44px 0 56px;
  background:
    linear-gradient(100deg, rgba(255, 106, 26, 0.12), transparent 62%),
    var(--ink-2);
}

.page-about .about-cta__inner {
  display: grid;
  gap: 24px;
}

.page-about .about-cta__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(24px, 5.4vw, 42px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--fog);
}

.page-about .about-cta__text {
  margin: 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ash);
}

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

/* ---------- 断点 ---------- */
@media (min-width: 620px) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-hero__fact {
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    gap: 8px;
    padding: 16px 18px;
  }

  .page-about .about-team__panel {
    padding: 64px 32px;
  }

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

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 32px;
  }
}

@media (min-width: 880px) {
  .page-about .about-hero {
    padding: 44px 0 72px;
  }

  .page-about .about-hero__grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 288px;
    gap: 56px;
    align-items: end;
  }

  .page-about .about-hero__facts {
    grid-template-columns: minmax(0, 1fr);
    margin-top: 0;
  }

  .page-about .about-line {
    grid-template-columns: 72px 236px minmax(0, 1fr);
    align-items: start;
    gap: 0 28px;
    padding: 34px 0;
  }

  .page-about .about-line:nth-child(2) {
    padding-left: 32px;
  }

  .page-about .about-line__idx {
    font-size: 15px;
    padding-top: 4px;
  }

  .page-about .about-team__panel {
    padding: 72px 56px;
    clip-path: polygon(0 32px, 100% 0, 100% calc(100% - 32px), 0 100%);
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }

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

  .page-about .about-role {
    padding: 20px 0 22px 20px;
  }

  .page-about .about-role:hover {
    border-left-color: var(--orange);
    padding-left: 26px;
  }

  .page-about .tl__item {
    grid-template-columns: 172px minmax(0, 1fr);
    gap: 0 40px;
    align-items: start;
    padding: 26px 0 34px;
  }

  .page-about .tl__year {
    font-size: 72px;
  }

  .page-about .tl__item::before {
    left: -29px;
    top: 40px;
    width: 11px;
    height: 11px;
  }

  .page-about .tl__title {
    font-size: 22px;
  }

  .page-about .about-eco__grid {
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 56px;
    align-items: start;
  }
}

@media (min-width: 1080px) {
  .page-about .about-origin__body {
    margin-left: 8.333%;
  }

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

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

  .page-about .about-role,
  .page-about .tl__item::before {
    transition: none;
  }
}
<<<PAGE_CSS_END>>>