.page-about {
  --about-glow: rgba(34, 224, 214, .12);
  --about-hair: rgba(233, 238, 249, .16);
  --about-axis: rgba(34, 224, 214, .30);
  --about-soft: rgba(233, 238, 249, .86);
  display: block;
}

/* ---------- 封面 ---------- */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--indigo-900);
  color: var(--on-dark);
}
.page-about .about-hero__bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 60%;
  opacity: .32;
}
.page-about .about-hero__veil {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(120% 90% at 10% 4%, rgba(34, 224, 214, .10), transparent 58%),
    linear-gradient(180deg, rgba(11, 22, 51, .60) 0%, rgba(11, 22, 51, .90) 54%, var(--indigo-900) 100%);
}
.page-about .about-hero__inner {
  position: relative;
  padding-block: clamp(46px, 9vw, 104px) clamp(52px, 10vw, 112px);
}
.page-about .about-hero__eyebrow {
  margin: clamp(20px, 4vw, 40px) 0 0;
  color: var(--cyan);
}
.page-about .about-hero__title {
  margin: clamp(14px, 2.4vw, 24px) 0 0;
  max-width: 16ch;
  font-size: clamp(38px, 7.2vw, 92px);
  font-weight: 900;
  line-height: 1.0;
  letter-spacing: -.025em;
  color: var(--on-dark);
}
.page-about .about-hero__title span {
  display: block;
  color: var(--cyan);
}
.page-about .about-hero__lede {
  margin: clamp(22px, 3.4vw, 36px) 0 0;
  max-width: 46ch;
  font-size: clamp(16px, 1.7vw, 18px);
  line-height: 1.78;
  color: var(--about-soft);
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px 28px;
  margin: clamp(34px, 5.4vw, 60px) 0 0;
  padding: clamp(22px, 3.4vw, 32px) 0 0;
  border-top: 1px solid var(--about-hair);
  list-style: none;
}
.page-about .about-hero__fact-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(24px, 3.4vw, 40px);
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: .01em;
  color: var(--on-dark);
}
.page-about .about-hero__fact-label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  letter-spacing: .02em;
  color: var(--on-dark-muted);
}

.page-about .about-hero__index {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  margin-top: clamp(30px, 4.6vw, 52px);
}
.page-about .about-hero__index a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 15px;
  border: 1px solid var(--about-hair);
  border-radius: 2px;
  font-size: 13px;
  letter-spacing: .02em;
  color: var(--on-dark-muted);
  text-decoration: none;
  transition: color 180ms var(--ease), border-color 180ms var(--ease), background-color 180ms var(--ease);
}
.page-about .about-hero__index a:hover,
.page-about .about-hero__index a:focus-visible {
  color: var(--on-dark);
  border-color: var(--cyan);
  background-color: var(--about-glow);
}
.page-about .about-hero__index .num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan);
}

/* ---------- 分区底色 ---------- */
.page-about .about-band {
  position: relative;
  padding-block: clamp(54px, 8.6vw, 116px);
}
.page-about .about-band--deep { background: var(--indigo-900); color: var(--on-dark); }
.page-about .about-band--teal { background: var(--teal); color: var(--on-dark); }
.page-about .about-band--violet { background: var(--violet); color: var(--on-dark); }
.page-about .about-band--wine { background: var(--wine); color: var(--on-dark); }
.page-about .about-band--mist { background: var(--paper); color: var(--ink); }

.page-about .about-band--deep .prose,
.page-about .about-band--teal .prose,
.page-about .about-band--violet .prose,
.page-about .about-band--wine .prose { color: var(--about-soft); }

.page-about .about-h2 {
  margin: 0;
  font-size: clamp(26px, 3.6vw, 40px);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -.015em;
}
.page-about .eyebrow + .about-h2 { margin-top: 14px; }

/* ---------- 起点 ---------- */
.page-about .about-pullquote {
  margin: clamp(26px, 3.4vw, 36px) 0 0;
  padding-left: 20px;
  border-left: 2px solid var(--cyan);
  max-width: 40ch;
  font-size: 15px;
  line-height: 1.72;
  color: var(--on-dark);
}
.page-about .about-sidecard {
  margin-top: clamp(28px, 4vw, 8px);
  background: rgba(11, 22, 51, .46);
  border: 1px solid var(--about-hair);
}
.page-about .about-sidecard__label {
  margin: 0 0 16px;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--cyan);
}
.page-about .about-sidecard__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}
.page-about .about-sidecard__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--about-soft);
}
.page-about .about-sidecard__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 7px;
  height: 7px;
  border: 1px solid var(--cyan);
  border-radius: 50%;
}

/* ---------- 时间线 ---------- */
.page-about .about-seasons__head {
  max-width: 62ch;
}
.page-about .about-seasons__note {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--on-dark-muted);
}

.page-about .tl {
  position: relative;
  margin: clamp(36px, 5.4vw, 72px) 0 0;
  padding: 0 0 0 32px;
  list-style: none;
}
.page-about .tl::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan) 0%, rgba(34, 224, 214, .40) 42%, rgba(34, 224, 214, .10) 100%);
}
.page-about .tl__item {
  position: relative;
  padding-bottom: clamp(38px, 6vw, 84px);
}
.page-about .tl__item:nth-child(n+5) {
  padding-bottom: clamp(26px, 4vw, 50px);
}
.page-about .tl__item:last-child {
  padding-bottom: 0;
}
.page-about .tl__item::before {
  content: "";
  position: absolute;
  left: -32px;
  top: 12px;
  width: 13px;
  height: 13px;
  border: 1px solid var(--cyan);
  border-radius: 50%;
  background: var(--indigo-900);
  box-shadow: 0 0 0 4px rgba(34, 224, 214, .10);
  transition: background-color 200ms var(--ease), box-shadow 200ms var(--ease);
}
.page-about .tl__item:hover::before,
.page-about .tl__item:focus-within::before {
  background-color: var(--cyan);
  box-shadow: 0 0 0 7px rgba(34, 224, 214, .18);
}
.page-about .tl__body {
  padding: clamp(20px, 2.8vw, 30px);
  border: 1px solid var(--about-hair);
  border-radius: 2px;
  background: rgba(20, 34, 74, .66);
  transition: border-color 200ms var(--ease), background-color 200ms var(--ease), transform 200ms var(--ease), box-shadow 200ms var(--ease);
}
.page-about .tl__item:nth-child(even) .tl__body {
  background: rgba(30, 46, 99, .46);
}
.page-about .tl__item:hover .tl__body,
.page-about .tl__item:focus-within .tl__body {
  border-color: var(--about-axis);
  background-color: rgba(30, 46, 99, .78);
  transform: translateY(-2px);
  box-shadow: var(--shadow-2);
}
.page-about .tl__season {
  margin: 0;
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--cyan);
}
.page-about .tl__title {
  margin: 12px 0 0;
  font-size: clamp(19px, 2.2vw, 24px);
  font-weight: 900;
  line-height: 1.34;
  letter-spacing: -.01em;
  color: var(--on-dark);
}
.page-about .tl__text {
  margin: 12px 0 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--about-soft);
}
.page-about .tl__text a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 224, 214, .42);
  transition: border-color 180ms var(--ease);
}
.page-about .tl__text a:hover,
.page-about .tl__text a:focus-visible {
  border-bottom-color: var(--cyan);
}

/* ---------- 数据来源 ---------- */
.page-about .about-data .figure {
  margin-top: clamp(30px, 4vw, 8px);
}
.page-about .steps {
  display: grid;
  gap: 0;
  margin: clamp(28px, 4vw, 40px) 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--hair);
}
.page-about .steps__item {
  position: relative;
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  align-items: baseline;
  gap: 4px 14px;
  padding: 20px 0;
  border-bottom: 1px solid var(--hair);
  transition: background-color 180ms var(--ease);
}
.page-about .steps__item:hover {
  background-color: rgba(34, 224, 214, .05);
}
.page-about .steps__n {
  grid-row: 1 / span 2;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--cyan-ink);
}
.page-about .steps__t {
  font-size: 17px;
  font-weight: 900;
  color: var(--ink);
}
.page-about .steps__d {
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 团队 ---------- */
.page-about .about-crew__head {
  max-width: 60ch;
}
.page-about .about-crew__note {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--on-dark-muted);
}
.page-about .crew {
  display: grid;
  gap: 1px;
  margin: clamp(32px, 4.6vw, 56px) 0 0;
  padding: 0;
  list-style: none;
  border: 1px solid var(--about-hair);
  background: var(--about-hair);
}
.page-about .crew__card {
  padding: clamp(24px, 3vw, 34px);
  background: var(--violet);
  transition: background-color 200ms var(--ease), transform 200ms var(--ease);
}
.page-about .crew__card:hover,
.page-about .crew__card:focus-within {
  background: #473383;
  transform: translateY(-2px);
}
.page-about .crew__num {
  margin: 0;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1;
  letter-spacing: .01em;
  color: var(--cyan);
}
.page-about .crew__role {
  margin: 16px 0 0;
  font-size: 19px;
  font-weight: 900;
  letter-spacing: -.01em;
  color: var(--on-dark);
}
.page-about .crew__duty {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.74;
  color: var(--on-dark-muted);
  transition: color 200ms var(--ease);
}
.page-about .crew__card:hover .crew__duty,
.page-about .crew__card:focus-within .crew__duty {
  color: var(--about-soft);
}
.page-about .about-crew__flow {
  margin-top: clamp(32px, 4.4vw, 56px);
  padding: clamp(22px, 3vw, 32px) 0 0;
  border-top: 1px solid var(--about-hair);
  max-width: 64ch;
}
.page-about .about-crew__flowtext {
  margin: 14px 0 22px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--about-soft);
}

/* ---------- 合作与覆盖 ---------- */
.page-about .about-partners .figure {
  margin-top: clamp(30px, 4vw, 8px);
}
.page-about .about-partners__bars {
  margin-top: clamp(36px, 5vw, 64px);
}
.page-about .bars {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
}
.page-about .bars__row {
  display: grid;
  grid-template-columns: minmax(96px, 30%) minmax(0, 1fr) 62px;
  align-items: center;
  gap: 14px;
  padding: 18px 0;
  border-bottom: 1px solid var(--about-hair);
}
.page-about .bars__label {
  font-size: 14px;
  letter-spacing: .02em;
  color: var(--on-dark-muted);
}
.page-about .bars__track {
  position: relative;
  display: block;
  height: 3px;
  background: rgba(124, 138, 165, .22);
  overflow: hidden;
}
.page-about .bars__fill {
  position: absolute;
  inset: 0 auto 0 0;
  display: block;
  height: 100%;
  background: var(--cyan);
  transition: width 320ms var(--ease);
}
.page-about .bars__fill--a { width: 34%; background: rgba(34, 224, 214, .55); }
.page-about .bars__fill--b { width: 100%; }
.page-about .bars__fill--c { width: 60%; background: rgba(34, 224, 214, .78); }
.page-about .bars__fill--d { width: 78%; background: var(--orange); }
.page-about .bars__num {
  font-size: 16px;
  text-align: right;
  letter-spacing: .04em;
  color: var(--on-dark);
}

/* ---------- 认可与投入 ---------- */
.page-about .about-honors__head {
  max-width: 56ch;
}
.page-about .honors {
  display: grid;
  gap: clamp(22px, 3vw, 34px);
  margin: clamp(32px, 4.6vw, 56px) 0 0;
  padding: 0;
  list-style: none;
}
.page-about .honors__item {
  padding-top: clamp(20px, 2.6vw, 28px);
  border-top: 1px solid rgba(233, 238, 249, .22);
}
.page-about .honors__year {
  margin: 0;
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--orange);
}
.page-about .honors__title {
  margin: 12px 0 0;
  font-size: clamp(18px, 2.1vw, 23px);
  font-weight: 900;
  line-height: 1.36;
  letter-spacing: -.01em;
  color: var(--on-dark);
}
.page-about .honors__text {
  margin: 10px 0 0;
  max-width: 52ch;
  font-size: 14.5px;
  line-height: 1.76;
  color: var(--about-soft);
}

/* ---------- 联系 ---------- */
.page-about .about-reach__inner {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
}
.page-about .about-reach__text {
  margin: 14px 0 0;
  max-width: 54ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--muted);
}
.page-about .about-reach__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px 30px;
  }
  .page-about .crew {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .honors {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(20px, 2.6vw, 30px);
  }
  .page-about .about-reach__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: center;
  }
  .page-about .about-reach__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 960px) {
  .page-about .tl {
    padding-left: 42px;
  }
  .page-about .tl::before {
    left: 6px;
  }
  .page-about .tl__item::before {
    left: -42px;
  }
  .page-about .about-partners__bars {
    padding-inline: 0;
  }
  .page-about .bars__row {
    grid-template-columns: 180px minmax(0, 1fr) 74px;
    gap: 24px;
  }
}

@media (max-width: 699px) {
  .page-about .about-hero__title {
    max-width: none;
  }
  .page-about .bars__row {
    grid-template-columns: minmax(0, 1fr) 56px;
    grid-template-areas:
      "label num"
      "track track";
    gap: 10px 12px;
  }
  .page-about .bars__label { grid-area: label; }
  .page-about .bars__track { grid-area: track; }
  .page-about .bars__num { grid-area: num; }
}
<<<END>>>