.page-about {
  --tl-axis: 34px;
  --about-tilt: -2.4deg;
  --about-rule: rgba(127, 216, 255, .26);
  position: relative;
  overflow-x: clip;
}

@media (min-width: 768px) {
  .page-about {
    --tl-axis: 96px;
  }
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumb {
  padding-top: clamp(20px, 3.2vw, 34px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(28px, 4.5vw, 56px) 0 clamp(40px, 6.5vw, 84px);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -34%;
  right: -20%;
  width: min(680px, 112vw);
  aspect-ratio: 1;
  background: radial-gradient(circle at 62% 42%, rgba(46, 155, 255, .22), transparent 62%);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-strong) 16%, rgba(242, 193, 78, .42) 52%, transparent);
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(30px, 4.4vw, 56px);
  align-items: center;
}

@media (min-width: 900px) {
  .page-about .about-hero__inner {
    grid-template-columns: 1.02fr .98fr;
  }
}

.page-about .about-hero__title {
  margin: 16px 0 0;
  font-size: clamp(2rem, 6.4vw, 4.3rem);
  font-weight: 250;
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--white);
  text-wrap: balance;
}

.page-about .about-hero__lede {
  margin-top: clamp(16px, 2.4vw, 26px);
  max-width: 36em;
  color: #C2CDE6;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
}

.page-about .about-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  margin-top: clamp(24px, 3.2vw, 34px);
  padding-top: clamp(18px, 2.4vw, 26px);
  border-top: 1px solid var(--line);
}

.page-about .about-fact {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin: 0;
}

.page-about .about-fact__num {
  font-family: var(--font-mono);
  font-size: clamp(1.15rem, 2.4vw, 1.55rem);
  letter-spacing: .04em;
  color: var(--electric);
}

.page-about .about-fact__unit {
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--mist);
}

.page-about .about-hero__media {
  position: relative;
  margin: 0;
  transform: rotate(var(--about-tilt));
  transform-origin: 50% 62%;
}

.page-about .about-hero__media .media__frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  box-shadow: 0 34px 74px -44px rgba(46, 155, 255, .7);
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
}

.page-about .about-hero__media::after {
  content: "";
  position: absolute;
  right: -12px;
  bottom: -12px;
  width: 64px;
  height: 64px;
  border-right: 1px solid rgba(242, 193, 78, .5);
  border-bottom: 1px solid rgba(242, 193, 78, .5);
  pointer-events: none;
}

.page-about .about-hero__media .media__caption {
  margin-top: 12px;
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--mist);
}

/* ---------- 目录索引带 ---------- */
.page-about .about-shell {
  position: relative;
}

.page-about .about-rail {
  margin-bottom: clamp(26px, 4vw, 48px);
  padding: 16px 0 18px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .about-rail__label {
  display: block;
  margin-bottom: 12px;
  color: var(--cyan);
}

.page-about .about-rail__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-rail__list li {
  margin: 0;
}

.page-about .about-rail .index-rail__link {
  display: inline-block;
  padding: 5px 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-about .about-rail .index-rail__link:hover,
.page-about .about-rail .index-rail__link.is-active {
  color: var(--gold);
  border-bottom-color: rgba(242, 193, 78, .55);
}

/* ---------- 时间轴骨架 ---------- */
.page-about .about-timeline {
  position: relative;
  padding-bottom: clamp(32px, 5vw, 64px);
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: calc(var(--tl-axis) / 2);
  width: 1px;
  transform: translateX(-50%);
  background: linear-gradient(180deg, transparent, var(--about-rule) 5%, var(--about-rule) 95%, transparent);
  pointer-events: none;
}

.page-about .tl-item {
  position: relative;
  display: grid;
  grid-template-columns: var(--tl-axis) minmax(0, 1fr);
  column-gap: clamp(12px, 2.6vw, 36px);
  padding: clamp(26px, 3.6vw, 44px) 0;
}

.page-about .tl-item--alt {
  background: linear-gradient(90deg, rgba(18, 58, 140, .16), rgba(10, 16, 36, 0) 76%);
}

.page-about .tl-item__marker {
  position: relative;
  z-index: 2;
}

.page-about .tl-item__dot {
  display: block;
  width: 10px;
  height: 10px;
  margin: 8px auto 0;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 5px rgba(5, 7, 14, .92), 0 0 16px rgba(242, 193, 78, .55);
}

.page-about .tl-item__tip {
  position: absolute;
  top: -20px;
  left: calc(50% + 14px);
  padding: 4px 10px;
  white-space: nowrap;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--gold);
  background: rgba(11, 11, 15, .94);
  border: 1px solid rgba(242, 193, 78, .34);
  border-radius: var(--radius);
  opacity: 0;
  transform: translateX(-6px);
  transition: opacity .24s var(--ease), transform .24s var(--ease);
  pointer-events: none;
}

@media (min-width: 900px) {
  .page-about .tl-item:hover .tl-item__tip,
  .page-about .tl-item:focus-within .tl-item__tip {
    opacity: 1;
    transform: translateX(0);
  }
}

.page-about .tl-item__body {
  min-width: 0;
}

.page-about .tl-item__kicker {
  display: block;
  margin: 0 0 12px;
  color: var(--cyan);
}

.page-about .tl-item__title {
  margin: 0 0 16px;
  font-size: clamp(1.5rem, 3.4vw, 2.25rem);
  font-weight: 700;
  font-style: italic;
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-about .tl-item__body p {
  margin: 0 0 14px;
  max-width: 46em;
  font-size: clamp(15px, 1.5vw, 16.5px);
  line-height: 1.85;
  color: #B7C4DE;
}

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

.page-about .tl-item__body strong {
  color: var(--white);
  font-weight: 600;
}

/* ---------- 五类内容目录 ---------- */
.page-about .catalog {
  margin: clamp(20px, 2.8vw, 30px) 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-about .catalog__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px 18px;
  padding: 16px 8px 16px 4px;
  border-bottom: 1px solid var(--line);
  transition: padding-left .24s var(--ease), background-color .24s var(--ease);
}

.page-about .catalog__row:hover {
  padding-left: 12px;
  background-color: rgba(30, 91, 224, .09);
}

@media (min-width: 760px) {
  .page-about .catalog__row {
    grid-template-columns: 52px minmax(96px, .3fr) minmax(0, 1fr);
    align-items: baseline;
  }
}

.page-about .catalog__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--electric);
}

.page-about .catalog__name {
  font-size: 1.02rem;
  font-weight: 700;
  font-style: italic;
  color: var(--white);
}

.page-about .catalog__desc {
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- 团队分工 ---------- */
.page-about .crew {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 2.2vw, 26px);
  margin-top: clamp(22px, 3vw, 34px);
}

@media (min-width: 720px) {
  .page-about .crew {
    grid-template-columns: 1.45fr 1fr 1fr 1.2fr;
  }
}

.page-about .crew__cell {
  padding-top: 16px;
  border-top: 1px solid var(--line-strong);
}

.page-about .crew__cell--lead {
  border-top-color: var(--gold);
}

.page-about .crew__role {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--cyan);
}

.page-about .crew__count {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: clamp(1.8rem, 3.6vw, 2.5rem);
  line-height: 1;
  color: var(--white);
}

.page-about .crew__count span {
  margin-left: 6px;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--mist);
}

.page-about .crew__desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--mist);
}

.page-about .crew__media {
  margin: clamp(24px, 3.4vw, 36px) 0 0;
}

.page-about .crew__media .media__frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.page-about .crew__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
}

.page-about .crew__media .media__caption {
  margin-top: 10px;
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--mist);
}

/* ---------- 展开详情 ---------- */
.page-about .about-day {
  margin-top: clamp(20px, 2.8vw, 30px);
  border-top: 1px solid var(--line);
}

.page-about .about-day summary {
  padding: 16px 0;
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--electric);
  cursor: pointer;
}

.page-about .about-day summary::marker {
  color: var(--gold);
}

.page-about .about-day .disclosure__body {
  padding-bottom: 8px;
}

.page-about .about-day .disclosure__body p {
  margin: 0 0 12px;
  max-width: 46em;
  font-size: 14.5px;
  line-height: 1.85;
  color: #AEBBD4;
}

/* ---------- 更新节奏 ---------- */
.page-about .beats {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 30px);
  margin-top: clamp(22px, 3vw, 32px);
}

@media (min-width: 760px) {
  .page-about .beats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .beat {
  position: relative;
  padding-top: 22px;
}

.page-about .beat::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--electric), rgba(46, 155, 255, .05));
}

.page-about .beat__time {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin: 0 0 10px;
}

.page-about .beat__num {
  font-family: var(--font-mono);
  font-size: clamp(1.7rem, 4vw, 2.4rem);
  line-height: 1;
  color: var(--white);
}

.page-about .beat__unit {
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--mist);
}

.page-about .beat__label {
  margin: 0 0 8px;
  font-size: 14px;
  font-weight: 700;
  font-style: italic;
  color: var(--gold);
}

.page-about .beat__desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 长期积累 ---------- */
.page-about .ledger {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: clamp(22px, 3vw, 34px);
  margin-top: clamp(24px, 3.4vw, 36px);
}

.page-about .ledger__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(1.9rem, 5.2vw, 3.2rem);
  line-height: 1;
  letter-spacing: .01em;
  color: var(--white);
}

.page-about .ledger__unit {
  margin-left: 9px;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--electric);
}

.page-about .ledger__label {
  margin: 12px 0 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--mist);
}

.page-about .about-archive__media {
  margin: clamp(26px, 3.6vw, 40px) 0 0;
}

.page-about .about-archive__media .media__frame {
  position: relative;
  overflow: hidden;
  max-width: 520px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.page-about .about-archive__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

.page-about .about-archive__media .media__caption {
  margin-top: 10px;
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--mist);
}

/* ---------- 下一赛季 ---------- */
.page-about .next-list {
  margin: clamp(20px, 2.8vw, 28px) 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-about .next-list li {
  padding: 16px 0 16px 22px;
  border-bottom: 1px solid var(--line);
  font-size: 14.5px;
  line-height: 1.82;
  color: #AEBBD4;
  position: relative;
}

.page-about .next-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 24px;
  width: 8px;
  height: 1px;
  background: var(--gold);
}

.page-about .next-list strong {
  color: var(--white);
  font-weight: 600;
}

/* ---------- 结尾行动区 ---------- */
.page-about .about-cta {
  padding: clamp(36px, 5.5vw, 76px) 0 clamp(44px, 6.5vw, 88px);
}

.page-about .about-cta__card {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 4.4vw, 52px);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(18, 58, 140, .6), rgba(10, 16, 36, .94) 60%),
    var(--night-2);
}

.page-about .about-cta__slash {
  position: absolute;
  top: -30%;
  right: -14%;
  width: min(420px, 68%);
  aspect-ratio: 1;
  background: radial-gradient(circle, rgba(46, 155, 255, .28), transparent 66%);
  pointer-events: none;
}

.page-about .about-cta__body {
  position: relative;
  z-index: 1;
}

.page-about .about-cta__title {
  margin: 14px 0 0;
  max-width: 22em;
  font-size: clamp(1.4rem, 3.2vw, 2.05rem);
  font-weight: 700;
  font-style: italic;
  line-height: 1.28;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-about .about-cta__lede {
  margin: clamp(14px, 2vw, 20px) 0 0;
  max-width: 44em;
  font-size: clamp(14.5px, 1.5vw, 16px);
  line-height: 1.85;
  color: #B7C4DE;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 32px);
}

@media (max-width: 480px) {
  .page-about .about-cta__actions .btn {
    width: 100%;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-hero__media {
    transform: none;
  }
  .page-about .tl-item__tip {
    transition: none;
  }
}
<<<END>>>