.page-about {
  --about-rail-x: 104px;
  --about-step-pad: 168px;
  background: var(--kt-night);
  color: var(--kt-paper);
  overflow-x: clip;
}

/* ---------- 面包屑 ---------- */
.page-about .kt-breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--kt-mist);
  margin-bottom: 30px;
}
.page-about .kt-breadcrumb a {
  color: var(--kt-mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s ease-out, border-color .2s ease-out;
}
.page-about .kt-breadcrumb a:hover {
  color: var(--kt-jade-light);
  border-bottom-color: var(--kt-jade-light);
}
.page-about .kt-breadcrumb__sep {
  margin: 0 9px;
  color: var(--kt-sand-deep);
}
.page-about .kt-breadcrumb [aria-current="page"] {
  color: var(--kt-paper);
  font-weight: 600;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(88px, 11vw, 132px) 0 clamp(44px, 6vw, 76px);
  background:
    radial-gradient(130% 95% at 84% -12%, rgba(18, 101, 92, .58) 0%, rgba(14, 20, 22, 0) 60%),
    linear-gradient(180deg, var(--kt-ink) 0%, var(--kt-night) 100%);
}
.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(90deg, rgba(201, 168, 124, .045) 0 1px, transparent 1px 68px);
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .75), transparent 72%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .75), transparent 72%);
}
.page-about .about-hero .kt-container {
  position: relative;
  z-index: 1;
}
.page-about .about-hero__grid {
  align-items: start;
}
.page-about .about-hero__copy {
  max-width: 48ch;
}
.page-about .about-hero .kt-eyebrow {
  margin: 0 0 12px;
}
.page-about .about-hero__title {
  margin: 0 0 22px;
  font-size: clamp(34px, 6.6vw, 66px);
  line-height: 1.06;
  font-weight: 900;
  letter-spacing: -.025em;
  color: var(--kt-paper);
}
.page-about .about-hero__title br {
  display: none;
}
.page-about .about-hero__lead {
  margin: 0;
  color: rgba(245, 241, 234, .82);
}

.page-about .about-hero__facts {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  margin: 36px 0 0;
  padding: 0;
  border-top: 1px solid var(--kt-line);
  border-bottom: 1px solid var(--kt-line);
}
.page-about .about-hero__facts li {
  flex: 1 1 130px;
  padding: 18px 18px 18px 0;
  border-right: 1px solid var(--kt-line);
}
.page-about .about-hero__facts li:last-child {
  border-right: 0;
}
.page-about .about-hero__figure {
  display: flex;
  align-items: baseline;
  gap: 5px;
}
.page-about .about-hero__num {
  font-family: var(--kt-font-mono);
  font-size: clamp(26px, 4vw, 34px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--kt-flame);
}
.page-about .about-hero__unit {
  font-size: 12px;
  color: var(--kt-mist);
}
.page-about .about-hero__desc {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  color: var(--kt-mist);
}

.page-about .about-hero__media {
  margin-top: 40px;
}
.page-about .about-hero__media .kt-figure {
  margin: 0;
}
.page-about .about-hero__media .kt-figure__media {
  border: 1px solid var(--kt-line-strong);
  background: var(--kt-ink);
}
.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-about .about-hero__media .kt-figure__caption {
  margin-top: 12px;
  font-size: 13px;
  color: var(--kt-mist);
}

/* ---------- 时间带骨架 ---------- */
.page-about .about-track {
  position: relative;
  padding: clamp(52px, 8vw, 96px) 0 clamp(24px, 4vw, 48px);
  background:
    linear-gradient(180deg, rgba(18, 101, 92, .12) 0%, rgba(14, 20, 22, 0) 42%),
    var(--kt-night);
}
.page-about .about-track__inner {
  position: relative;
}
.page-about .about-step {
  position: relative;
  padding-bottom: clamp(48px, 7vw, 92px);
}
.page-about .about-step:last-child {
  padding-bottom: 0;
}
.page-about .about-step__rail {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 14px;
}
.page-about .about-step__num {
  font-family: var(--kt-font-mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--kt-flame);
}
.page-about .about-step__phase {
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--kt-mist);
}
.page-about .about-step__dot {
  display: none;
}
.page-about .about-step__title {
  margin: 0 0 18px;
  font-size: clamp(24px, 3.8vw, 40px);
  line-height: 1.22;
  font-weight: 800;
  letter-spacing: -.015em;
  color: var(--kt-paper);
}
.page-about .about-step__intro {
  margin: 0 0 6px;
  max-width: 40em;
  font-size: 16px;
  line-height: 1.75;
  color: rgba(245, 241, 234, .74);
}
.page-about .about-step__figure {
  margin: 34px 0 0;
}
.page-about .about-step__figure .kt-figure__media {
  border: 1px solid var(--kt-line);
  background: var(--kt-ink);
}
.page-about .about-step__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-about .about-step__figure .kt-figure__caption {
  margin-top: 12px;
  font-size: 13px;
  color: var(--kt-mist);
}

/* ---------- 01 看台方式 ---------- */
.page-about .about-note {
  max-width: 66ch;
  padding: clamp(22px, 3vw, 36px);
  background: var(--kt-sand);
  color: var(--kt-on-sand);
  border: 1px solid var(--kt-sand-deep);
  box-shadow: 8px 10px 0 rgba(201, 168, 124, .13);
}
.page-about .about-note p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.78;
  color: var(--kt-on-sand);
}
.page-about .about-note p:last-child {
  margin-bottom: 0;
}

/* ---------- 02 六大板块 ---------- */
.page-about .about-blocks {
  display: grid;
  gap: 0;
  margin-top: 30px;
}
.page-about .about-block {
  position: relative;
  padding: 22px 76px 22px 22px;
  margin-top: -12px;
  background: var(--kt-sand);
  color: var(--kt-on-sand);
  border: 1px solid var(--kt-sand-deep);
  border-radius: var(--kt-radius);
  box-shadow: 6px 9px 0 rgba(201, 168, 124, .1);
  transition: transform .28s ease-out, box-shadow .28s ease-out;
}
.page-about .about-block:first-child {
  margin-top: 0;
}
.page-about .about-block:hover {
  transform: translateY(-4px);
  box-shadow: 6px 14px 0 rgba(201, 168, 124, .16);
}
.page-about .about-block__tag {
  display: inline-block;
  padding: 3px 10px;
  margin-bottom: 12px;
  font-size: 12px;
  letter-spacing: .16em;
  background: var(--kt-jade);
  color: var(--kt-paper);
  border-radius: var(--kt-radius);
  transition: background .26s ease-out, color .26s ease-out;
}
.page-about .about-block:hover .about-block__tag {
  background: var(--kt-flame);
  color: var(--kt-on-flame);
}
.page-about .about-block__num {
  position: absolute;
  top: 16px;
  right: 18px;
  font-family: var(--kt-font-mono);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.04em;
  color: var(--kt-on-sand);
  opacity: .22;
  transition: opacity .26s ease-out, color .26s ease-out;
}
.page-about .about-block:hover .about-block__num {
  opacity: 1;
  color: var(--kt-jade);
}
.page-about .about-block__title {
  margin: 0 0 8px;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--kt-on-sand);
}
.page-about .about-block__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: rgba(27, 23, 18, .82);
}

.page-about .about-link-row {
  margin: 30px 0 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(245, 241, 234, .72);
}
.page-about .about-link-row a {
  color: var(--kt-jade-light);
  text-decoration: none;
  border-bottom: 1px solid rgba(79, 209, 197, .42);
  transition: color .2s ease-out, border-color .2s ease-out;
}
.page-about .about-link-row a:hover {
  color: var(--kt-flame);
  border-bottom-color: var(--kt-flame);
}

/* ---------- 03 编辑小组 ---------- */
.page-about .about-team {
  display: grid;
  gap: 30px;
  margin-top: 26px;
}
.page-about .about-team__copy p {
  margin: 0 0 16px;
  max-width: 38em;
  font-size: 16px;
  line-height: 1.78;
  color: rgba(245, 241, 234, .8);
}
.page-about .about-team__copy p:last-child {
  margin-bottom: 0;
}
.page-about .about-team__copy a {
  color: var(--kt-jade-light);
  text-decoration: none;
  border-bottom: 1px solid rgba(79, 209, 197, .42);
}
.page-about .about-team__copy a:hover {
  color: var(--kt-flame);
  border-bottom-color: var(--kt-flame);
}

.page-about .about-team__panel {
  padding: 24px 22px;
  background: var(--kt-ink);
  border: 1px solid var(--kt-line);
  border-left: 3px solid var(--kt-jade);
}
.page-about .about-team__panel-title {
  margin: 0 0 18px;
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--kt-mist);
}
.page-about .about-team__row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  column-gap: 14px;
  row-gap: 10px;
  padding: 16px 0;
  border-top: 1px solid var(--kt-line);
}
.page-about .about-team__row:first-of-type {
  border-top: 0;
  padding-top: 0;
}
.page-about .about-team__count {
  font-family: var(--kt-font-mono);
  font-size: 42px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.04em;
  color: var(--kt-flame);
}
.page-about .about-team__count--sm {
  font-size: 30px;
  color: var(--kt-warn);
}
.page-about .about-team__role {
  font-size: 15px;
  color: rgba(245, 241, 234, .82);
}
.page-about .about-team__dots {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.page-about .about-team__dots i {
  display: block;
  width: 11px;
  height: 11px;
  border-radius: 1px;
  background: var(--kt-jade-light);
}
.page-about .about-team__row:nth-of-type(2) .about-team__dots i {
  background: var(--kt-sand-deep);
}

@media (prefers-reduced-motion: no-preference) {
  .page-about .about-team__dots i {
    animation: about-dot-in .42s ease-out both;
  }
  .page-about .about-team__dots i:nth-child(1) { animation-delay: .04s; }
  .page-about .about-team__dots i:nth-child(2) { animation-delay: .09s; }
  .page-about .about-team__dots i:nth-child(3) { animation-delay: .14s; }
  .page-about .about-team__dots i:nth-child(4) { animation-delay: .19s; }
  .page-about .about-team__dots i:nth-child(5) { animation-delay: .24s; }
  .page-about .about-team__dots i:nth-child(6) { animation-delay: .29s; }
  .page-about .about-team__dots i:nth-child(7) { animation-delay: .34s; }
  .page-about .about-team__dots i:nth-child(8) { animation-delay: .39s; }
  .page-about .about-team__dots i:nth-child(9) { animation-delay: .44s; }
}

@keyframes about-dot-in {
  from {
    opacity: 0;
    transform: translateY(5px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 04 运营历程 ---------- */
.page-about .about-era {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
}
.page-about .about-era__item {
  position: relative;
  padding: 20px 0 20px 24px;
  border-left: 1px solid var(--kt-line);
}
.page-about .about-era__item::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 27px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--kt-sand-deep);
}
.page-about .about-era__item:last-child::before {
  background: var(--kt-flame);
  box-shadow: 0 0 0 5px rgba(255, 106, 43, .14);
}
.page-about .about-era__mark {
  display: inline-block;
  margin-bottom: 10px;
  padding: 2px 9px;
  font-family: var(--kt-font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--kt-jade-light);
  border: 1px solid rgba(79, 209, 197, .34);
  border-radius: var(--kt-radius);
}
.page-about .about-era__title {
  margin: 0 0 7px;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--kt-paper);
}
.page-about .about-era__text {
  margin: 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.74;
  color: rgba(245, 241, 234, .72);
}

/* ---------- 05 选题来源 ---------- */
.page-about .about-sources {
  display: grid;
  gap: 1px;
  margin-top: 30px;
  background: var(--kt-line);
  border: 1px solid var(--kt-line);
}
.page-about .about-source {
  padding: 24px 22px;
  background: var(--kt-ink);
}
.page-about .about-source h3 {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--kt-jade-light);
}
.page-about .about-source p {
  margin: 0;
  font-size: 15px;
  line-height: 1.74;
  color: rgba(245, 241, 234, .72);
}

/* ---------- 收尾 ---------- */
.page-about .about-next {
  padding: clamp(48px, 7vw, 88px) 0 clamp(64px, 9vw, 108px);
  background: linear-gradient(180deg, var(--kt-night) 0%, var(--kt-ink) 100%);
  border-top: 1px solid var(--kt-line);
}
.page-about .about-next .kt-eyebrow {
  margin: 0 0 12px;
}
.page-about .about-next__title {
  margin: 0 0 16px;
  font-size: clamp(24px, 3.6vw, 38px);
  line-height: 1.24;
  font-weight: 800;
  letter-spacing: -.015em;
  color: var(--kt-paper);
}
.page-about .about-next__text {
  margin: 0;
  max-width: 44em;
  font-size: 16px;
  line-height: 1.75;
  color: rgba(245, 241, 234, .74);
}
.page-about .about-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

/* ---------- 断点 ---------- */
@media (min-width: 768px) {
  .page-about .about-hero__title br {
    display: block;
  }
  .page-about .about-block {
    width: 80%;
  }
  .page-about .about-block:nth-child(even) {
    margin-left: auto;
  }
  .page-about .about-sources {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .about-team {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 44px;
    align-items: start;
  }
}

@media (min-width: 1024px) {
  .page-about .about-hero__media {
    margin-top: 4px;
    padding-left: 28px;
  }
  .page-about .about-track__inner::before {
    content: "";
    position: absolute;
    left: var(--about-rail-x);
    top: 8px;
    bottom: 8px;
    width: 1px;
    background: linear-gradient(180deg, transparent, var(--kt-line-strong) 6%, var(--kt-line-strong) 94%, transparent);
  }
  .page-about .about-step {
    padding-left: var(--about-step-pad);
  }
  .page-about .about-step__rail {
    position: absolute;
    left: 0;
    top: 8px;
    width: calc(var(--about-rail-x) - 20px);
    margin-bottom: 0;
    flex-direction: column;
    align-items: flex-end;
    gap: 5px;
    text-align: right;
  }
  .page-about .about-step__dot {
    display: block;
    position: absolute;
    left: calc(var(--about-rail-x) - 5px);
    top: 12px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--kt-flame);
    box-shadow: 0 0 0 5px rgba(255, 106, 43, .14);
  }
  .page-about .about-block {
    width: 74%;
  }
}

@media (min-width: 1280px) {
  .page-about .about-hero__facts li {
    padding-right: 26px;
  }
  .page-about .about-block {
    width: 68%;
  }
}
<<<END>>>