.page-about {
  background: var(--ks-snow);
  color: var(--ks-ink);
  overflow-x: clip;
}

.page-about .about-crumb {
  padding: 1rem 0 0.4rem;
}

/* ---------- 首屏分屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(1.2rem, 3vw, 2rem) 0 clamp(2.6rem, 6vw, 4.6rem);
  background:
    radial-gradient(900px 420px at 92% -8%, rgba(232, 117, 43, 0.28), transparent 62%),
    linear-gradient(165deg, #0B1B33 0%, #102A4C 68%, #0B1B33 100%);
  color: var(--ks-snow);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(1.8rem, 4vw, 3rem);
}

.page-about .about-hero__copy {
  max-width: 40rem;
}

.page-about .about-hero__copy .ks-title--xl {
  margin: 0.5rem 0 1rem;
  color: var(--ks-snow);
  text-wrap: balance;
}

.page-about .about-hero__lead {
  color: rgba(244, 247, 251, 0.86);
  max-width: 34rem;
}

.page-about .about-hero__figure {
  margin: 1.8rem 0 0;
  border: 3px solid rgba(244, 247, 251, 0.16);
  box-shadow: var(--ks-shadow-hard-dark);
  background: linear-gradient(150deg, #102A4C, #0B1B33);
}

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

.page-about .about-hero__cap {
  padding: 0.7rem 0.9rem;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: rgba(244, 247, 251, 0.7);
  border-top: 1px solid rgba(140, 166, 196, 0.28);
}

/* ---------- 时间线 ---------- */
.page-about .about-hero__side {
  border-top: 3px solid rgba(232, 117, 43, 0.55);
  padding-top: 1.2rem;
}

.page-about .about-tl__title {
  margin: 0 0 1.2rem;
  font-size: clamp(1rem, 2.2vw, 1.15rem);
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--ks-amber);
}

.page-about .about-tl {
  list-style: none;
  margin: 0;
  padding: 0 0 0 1.5rem;
  border-left: 3px solid rgba(140, 166, 196, 0.35);
}

.page-about .about-tl__item {
  position: relative;
  padding: 0.15rem 0 1.5rem 0.2rem;
  transition: transform 180ms var(--ks-ease);
}

.page-about .about-tl__item::before {
  content: "";
  position: absolute;
  left: -1.81rem;
  top: 0.55rem;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--ks-night);
  border: 3px solid var(--ks-yak);
  transition: background 160ms var(--ks-ease), box-shadow 160ms var(--ks-ease);
}

.page-about .about-tl__item:hover::before,
.page-about .about-tl__item:focus-within::before {
  background: var(--ks-yak);
  box-shadow: 0 0 0 5px rgba(232, 117, 43, 0.22);
}

.page-about .about-tl__item:hover {
  transform: translateX(4px);
}

.page-about .about-tl__year {
  display: inline-block;
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
  color: var(--ks-amber);
  letter-spacing: -0.02em;
}

.page-about .about-tl__h {
  margin: 0.45rem 0 0.35rem;
  font-size: 1.06rem;
  font-weight: 700;
  color: var(--ks-snow);
}

.page-about .about-tl__p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.7;
  color: rgba(244, 247, 251, 0.76);
  max-width: 30rem;
}

/* ---------- 五大支柱 ---------- */
.page-about .about-story {
  padding: clamp(2.6rem, 6vw, 5rem) 0;
  background: var(--ks-snow);
}

.page-about .about-story__grid {
  display: grid;
  gap: clamp(1.6rem, 4vw, 3rem);
}

.page-about .about-story__head .ks-title {
  margin: 0.5rem 0 1rem;
  text-wrap: balance;
}

.page-about .about-story__lead {
  margin: 0;
  max-width: 34rem;
  font-size: 1.02rem;
  line-height: 1.8;
  color: var(--ks-ink-soft);
}

.page-about .about-pillars {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 3px solid var(--ks-edge);
}

.page-about .about-pillars__item {
  padding: 1.1rem 0.2rem 1.2rem;
  border-bottom: 1px solid var(--ks-edge);
  transition: background 160ms var(--ks-ease);
}

.page-about .about-pillars__item:hover {
  background: rgba(140, 166, 196, 0.1);
}

.page-about .about-pillars__idx {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--ks-yak);
  letter-spacing: 0.1em;
}

.page-about .about-pillars__h {
  margin: 0.3rem 0 0.4rem;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--ks-night);
}

.page-about .about-pillars__item p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--ks-ink-soft);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  padding: clamp(2.6rem, 6vw, 5rem) 0;
  background: linear-gradient(180deg, #EDF2F8 0%, #F4F7FB 100%);
}

.page-about .about-team__grid {
  display: grid;
  gap: clamp(1.6rem, 4vw, 2.6rem);
}

.page-about .about-team__head .ks-title {
  margin: 0.5rem 0 1rem;
  text-wrap: balance;
}

.page-about .about-team__lead {
  margin: 0;
  max-width: 42rem;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--ks-ink-soft);
}

.page-about .about-team__body {
  display: grid;
  gap: clamp(1.4rem, 3vw, 2.4rem);
}

.page-about .about-rings {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

.page-about .about-rings__item {
  width: 126px;
  height: 126px;
  border-radius: 50%;
  display: grid;
  place-content: center;
  text-align: center;
  gap: 0.15rem;
  background: var(--ks-snow);
  border: 3px solid var(--ks-curtain);
  box-shadow: 6px 6px 0 rgba(30, 38, 48, 0.14);
  cursor: default;
  transition: transform 180ms var(--ks-ease), border-color 180ms var(--ks-ease), box-shadow 180ms var(--ks-ease);
}

.page-about .about-rings__item--b {
  border-color: var(--ks-yak);
}

.page-about .about-rings__item--c {
  border-color: var(--ks-green);
}

.page-about .about-rings__item:hover,
.page-about .about-rings__item:focus-visible {
  transform: translateY(-4px);
  box-shadow: 10px 10px 0 rgba(30, 38, 48, 0.18);
  border-color: var(--ks-amber);
  outline: none;
}

.page-about .about-rings__item:focus-visible {
  box-shadow: 0 0 0 4px rgba(232, 117, 43, 0.45), 8px 8px 0 rgba(30, 38, 48, 0.18);
}

.page-about .about-rings__num {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
  color: var(--ks-night);
}

.page-about .about-rings__label {
  display: block;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--ks-ink-soft);
}

.page-about .about-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.page-about .about-steps__item {
  padding-left: 1rem;
  border-left: 3px solid var(--ks-edge);
}

.page-about .about-steps__item p {
  margin: 0.5rem 0 0;
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--ks-ink-soft);
}

.page-about .about-team__figure {
  margin: 0;
  border: 3px solid var(--ks-night);
  box-shadow: var(--ks-shadow-hard);
  background: var(--ks-curtain);
}

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

.page-about .about-team__cap {
  padding: 0.7rem 0.9rem;
  font-size: 0.82rem;
  color: rgba(244, 247, 251, 0.78);
  border-top: 1px solid rgba(140, 166, 196, 0.3);
}

/* ---------- 场馆协作 ---------- */
.page-about .about-venues {
  padding: clamp(2.6rem, 6vw, 5rem) 0;
  background:
    radial-gradient(700px 340px at 8% 0%, rgba(46, 139, 109, 0.22), transparent 65%),
    linear-gradient(180deg, #0B1B33 0%, #102A4C 100%);
  color: var(--ks-snow);
}

.page-about .about-venues__grid {
  display: grid;
  gap: clamp(1.6rem, 4vw, 2.6rem);
}

.page-about .about-venues__copy .ks-title {
  margin: 0.5rem 0 1rem;
  color: var(--ks-snow);
  text-wrap: balance;
}

.page-about .about-venues__lead {
  margin: 0 0 1rem;
  max-width: 38rem;
  font-size: 1rem;
  line-height: 1.8;
  color: rgba(244, 247, 251, 0.84);
}

.page-about .about-venues__note {
  margin: 0 0 1.4rem;
  max-width: 38rem;
  font-size: 0.94rem;
  line-height: 1.75;
  color: rgba(244, 247, 251, 0.68);
  border-left: 3px solid rgba(232, 117, 43, 0.7);
  padding-left: 0.9rem;
}

.page-about .about-venues__figure {
  margin: 0;
  border: 3px solid rgba(244, 247, 251, 0.2);
  box-shadow: var(--ks-shadow-hard-dark);
  background: var(--ks-curtain);
}

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

.page-about .about-venues__cap {
  padding: 0.7rem 0.9rem;
  font-size: 0.82rem;
  color: rgba(244, 247, 251, 0.7);
  border-top: 1px solid rgba(140, 166, 196, 0.28);
}

.page-about .about-net {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.page-about .about-net__node {
  position: relative;
  padding: 1rem 1.1rem;
  border: 2px solid rgba(140, 166, 196, 0.34);
  background: rgba(11, 27, 51, 0.55);
  transition: border-color 180ms var(--ks-ease), background 180ms var(--ks-ease);
}

.page-about .about-net__node::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  background: linear-gradient(90deg, var(--ks-yak), var(--ks-yellow), var(--ks-green));
  opacity: 0.35;
  transition: opacity 180ms var(--ks-ease);
}

.page-about .about-net__node:hover {
  border-color: rgba(232, 117, 43, 0.7);
  background: rgba(16, 42, 76, 0.9);
}

.page-about .about-net__node:hover::after {
  opacity: 1;
}

.page-about .about-net__num {
  display: block;
  font-size: 2.1rem;
  font-weight: 700;
  line-height: 1;
  color: var(--ks-amber);
}

.page-about .about-net__label {
  display: block;
  margin-top: 0.35rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--ks-snow);
}

.page-about .about-net__desc {
  display: block;
  margin-top: 0.3rem;
  font-size: 0.86rem;
  line-height: 1.65;
  color: rgba(244, 247, 251, 0.64);
}

/* ---------- 品牌视觉 ---------- */
.page-about .about-visual {
  padding: clamp(2.6rem, 6vw, 5rem) 0;
  background: var(--ks-snow);
}

.page-about .about-visual__grid {
  display: grid;
  gap: clamp(1.6rem, 4vw, 3rem);
}

.page-about .about-visual__copy .ks-title {
  margin: 0.5rem 0 1rem;
  text-wrap: balance;
}

.page-about .about-visual__copy p {
  margin: 0 0 1rem;
  max-width: 36rem;
  font-size: 0.98rem;
  line-height: 1.8;
  color: var(--ks-ink-soft);
}

.page-about .about-palette {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.page-about .about-palette__item {
  display: grid;
  gap: 0.2rem;
  padding: 0.85rem 0.9rem;
  border: 2px solid var(--ks-edge);
  background: #fff;
  transition: transform 180ms var(--ks-ease), border-color 180ms var(--ks-ease);
}

.page-about .about-palette__item:hover {
  transform: translateY(-3px);
  border-color: var(--ks-amber);
}

.page-about .about-palette__chip {
  display: block;
  height: 34px;
  margin-bottom: 0.5rem;
  border: 2px solid rgba(30, 38, 48, 0.16);
}

.page-about .about-palette__chip--night {
  background: #0B1B33;
}

.page-about .about-palette__chip--yak {
  background: #E8752B;
}

.page-about .about-palette__chip--red {
  background: #C8423B;
}

.page-about .about-palette__chip--green {
  background: #2E8B6D;
}

.page-about .about-palette__chip--yellow {
  background: #E7C547;
}

.page-about .about-palette__chip--mist {
  background: #8CA6C4;
}

.page-about .about-palette__name {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--ks-night);
}

.page-about .about-palette__use {
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--ks-ink-soft);
}

/* ---------- 联系入口 ---------- */
.page-about .about-support {
  padding: clamp(2.6rem, 6vw, 5rem) 0 clamp(3rem, 7vw, 5.5rem);
  background: linear-gradient(180deg, #EDF2F8 0%, #DFE8F2 100%);
}

.page-about .about-support__inner {
  display: grid;
  gap: clamp(1.6rem, 4vw, 3rem);
}

.page-about .about-support__copy .ks-title {
  margin: 0.5rem 0 1rem;
  text-wrap: balance;
}

.page-about .about-support__copy p {
  margin: 0;
  max-width: 34rem;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--ks-ink-soft);
}

.page-about .about-support__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.page-about .about-support__aside {
  border-top: 3px solid var(--ks-night);
  padding-top: 1.1rem;
}

.page-about .about-support__asidehead {
  margin: 0 0 0.9rem;
  font-size: 0.86rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--ks-night);
}

.page-about .about-support__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}

.page-about .about-support__links a {
  display: block;
  padding: 0.6rem 0.8rem;
  background: #fff;
  border: 2px solid var(--ks-edge);
  color: var(--ks-night);
  font-size: 0.94rem;
  text-decoration: none;
  transition: border-color 160ms var(--ks-ease), transform 160ms var(--ks-ease);
}

.page-about .about-support__links a:hover {
  border-color: var(--ks-yak);
  transform: translateX(3px);
}

.page-about .about-support__links a:focus-visible {
  outline: 3px solid var(--ks-yak);
  outline-offset: 2px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-about .about-story__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }

  .page-about .about-pillars {
    border-top-width: 3px;
  }

  .page-about .about-team__body {
    grid-template-columns: minmax(0, 7fr) minmax(0, 6fr);
    align-items: center;
  }

  .page-about .about-net {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

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

  .page-about .about-hero__figure {
    margin-top: 2rem;
  }

  .page-about .about-rings {
    display: block;
    position: relative;
    min-height: 410px;
  }

  .page-about .about-rings__item {
    position: absolute;
    width: 218px;
    height: 218px;
    left: 0;
    top: 8px;
  }

  .page-about .about-rings__item--b {
    width: 192px;
    height: 192px;
    left: 142px;
    top: 152px;
  }

  .page-about .about-rings__item--c {
    width: 158px;
    height: 158px;
    left: 292px;
    top: 8px;
  }

  .page-about .about-rings__num {
    font-size: 2.4rem;
  }

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

  .page-about .about-venues__figure {
    grid-row: span 1;
  }

  .page-about .about-net {
    grid-column: 1 / -1;
  }

  .page-about .about-visual__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    align-items: start;
  }

  .page-about .about-palette {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1180px) {
  .page-about .about-hero__copy .ks-title--xl {
    font-size: clamp(3rem, 4.4vw, 4.6rem);
  }

  .page-about .about-rings__item {
    width: 238px;
    height: 238px;
  }

  .page-about .about-rings__item--b {
    width: 206px;
    height: 206px;
    left: 158px;
    top: 168px;
  }

  .page-about .about-rings__item--c {
    width: 168px;
    height: 168px;
    left: 318px;
  }

  .page-about .about-rings {
    min-height: 440px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-tl__item,
  .page-about .about-rings__item,
  .page-about .about-palette__item,
  .page-about .about-support__links a {
    transition: none;
  }

  .page-about .about-tl__item:hover,
  .page-about .about-rings__item:hover,
  .page-about .about-palette__item:hover,
  .page-about .about-support__links a:hover {
    transform: none;
  }
}
<<<END>>>