.page-about {
  --about-rail: 200px;
  --about-glow: rgba(255, 61, 139, .20);
  --about-glow-cyan: rgba(53, 224, 214, .14);
  --about-card: linear-gradient(180deg, rgba(36, 28, 92, .68), rgba(22, 17, 58, .34));
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  padding: clamp(1.5rem, 4vw, 2.75rem) 0 clamp(2rem, 5vw, 3.5rem);
  border-bottom: 1px solid var(--line-softer);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  top: -40%;
  right: -14%;
  width: min(720px, 88vw);
  aspect-ratio: 1 / 1;
  background: radial-gradient(closest-side, var(--about-glow), transparent 72%);
  pointer-events: none;
  z-index: -1;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: min(520px, 70vw);
  aspect-ratio: 1 / 1;
  background: radial-gradient(closest-side, var(--about-glow-cyan), transparent 70%);
  pointer-events: none;
  z-index: -1;
}

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

.page-about .about-hero .breadcrumb {
  margin-bottom: 1.25rem;
}

.page-about .about-hero h1 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(2rem, 6.2vw, 4rem);
  line-height: 1.06;
  letter-spacing: -.03em;
  color: var(--star-white);
  margin: .5rem 0 1rem;
  max-width: 16ch;
  text-wrap: balance;
}

.page-about .about-lede {
  font-size: clamp(1rem, 2.3vw, 1.12rem);
  line-height: 1.85;
  color: var(--haze);
  max-width: 52ch;
  margin: 0;
}

.page-about .about-pulse {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.1rem 1.25rem;
  margin-top: clamp(1.75rem, 4vw, 2.5rem);
  padding-top: 1.25rem;
  border-top: 1px solid var(--line-quiet);
}

@media (min-width: 720px) {
  .page-about .about-pulse {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .about-pulse .stat {
  display: flex;
  flex-direction: column;
  gap: .35rem;
  min-width: 0;
}

.page-about .about-pulse .stat__value {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(1.5rem, 4vw, 2.05rem);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--star-white);
  transition: color .3s var(--ease);
}

.page-about .about-pulse .stat:hover .stat__value {
  color: var(--orange);
}

.page-about .about-pulse .stat__label {
  font-size: .82rem;
  line-height: 1.5;
  color: var(--haze);
}

/* ---------- 通用章节 ---------- */
.page-about .about-band {
  padding: clamp(2.25rem, 5vw, 4rem) 0;
}

.page-about .about-band h2,
.page-about .about-pledge h2 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.55rem, 3.6vw, 2.4rem);
  line-height: 1.16;
  letter-spacing: -.02em;
  color: var(--star-white);
  margin: .55rem 0 .9rem;
  text-wrap: balance;
}

.page-about .about-band__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.1rem;
}

@media (min-width: 900px) {
  .page-about .about-band__inner {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: 1.5rem 3rem;
  }
}

.page-about .about-band__aside {
  padding-top: .5rem;
  border-top: 1px solid var(--line-cyan);
}

.page-about .about-band__tick {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  margin: 0;
  font-family: var(--font-mono);
  font-size: .74rem;
  font-weight: 600;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-about .about-band__tick::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--line-cyan);
  flex: none;
}

.page-about .about-intro {
  color: var(--haze);
  line-height: 1.85;
  font-size: 1rem;
  max-width: 60ch;
  margin: 0 0 1.5rem;
}

.page-about .about-note {
  color: var(--haze);
  font-size: .875rem;
  line-height: 1.75;
  margin: 1.5rem 0 0;
  padding-left: .9rem;
  border-left: 2px solid var(--line-magenta);
  max-width: 62ch;
}

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

.page-about .about-prose {
  color: var(--haze);
}

.page-about .about-prose p {
  line-height: 1.9;
  font-size: 1rem;
}

/* ---------- 数据流程 ---------- */
.page-about .about-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.75rem;
}

@media (min-width: 880px) {
  .page-about .about-split {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: 3rem;
    align-items: start;
  }
}

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

@media (min-width: 720px) {
  .page-about .about-flow {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .about-flow__step {
  position: relative;
  padding: 1.2rem 1.1rem 1.35rem;
  background: var(--about-card);
  border: 1px solid var(--line-softer);
  border-top: 2px solid var(--magenta);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut-sm)), calc(100% - var(--cut-sm)) 100%, 0 100%);
  transition: border-color .3s var(--ease), transform .3s var(--ease);
}

.page-about .about-flow__step:hover {
  border-color: var(--line-cyan);
  border-top-color: var(--cyan);
  transform: translateY(-2px);
}

.page-about .about-flow__num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: .08em;
  color: var(--orange);
  margin-bottom: .6rem;
}

.page-about .about-flow__step h3 {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.4;
  color: var(--star-white);
  margin: 0 0 .5rem;
}

.page-about .about-flow__step p {
  margin: 0;
  font-size: .88rem;
  line-height: 1.72;
  color: var(--haze);
}

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

.page-about .about-split__media img,
.page-about .about-wide img,
.page-about .about-coop__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-about .about-split__media .media-frame__caption {
  display: block;
  margin-top: .7rem;
  font-size: .78rem;
  line-height: 1.6;
  letter-spacing: .02em;
  color: var(--haze);
}

/* ---------- 赛季时间轴 ---------- */
.page-about .about-wide {
  margin-top: 1.5rem;
  margin-bottom: 2.25rem;
}

.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.5rem;
  counter-reset: season;
}

@media (min-width: 880px) {
  .page-about .about-timeline {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 1.25rem;
  }
}

.page-about .about-node {
  position: relative;
  padding-top: 1.35rem;
  border-top: 1px solid var(--line-softer);
  transition: border-color .3s var(--ease);
}

.page-about .about-node::before {
  content: "";
  position: absolute;
  top: -4px;
  left: 0;
  width: 7px;
  height: 7px;
  border-radius: var(--radius-orb);
  background: var(--quiet);
  transition: background .3s var(--ease), box-shadow .3s var(--ease);
}

.page-about .about-node:hover,
.page-about .about-node:focus-within {
  border-color: var(--line-magenta);
}

.page-about .about-node:hover::before,
.page-about .about-node:focus-within::before {
  background: var(--magenta);
  box-shadow: 0 0 0 4px rgba(255, 61, 139, .18);
}

.page-about .about-node__season {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: .8rem;
  letter-spacing: .1em;
  color: var(--orange);
  margin: 0 0 .45rem;
}

.page-about .about-node__title {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.4;
  color: var(--star-white);
  margin: 0 0 .5rem;
}

.page-about .about-node__text {
  margin: 0;
  font-size: .86rem;
  line-height: 1.7;
  color: var(--haze);
}

.page-about .about-node__more {
  margin: 0;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  font-size: .82rem;
  line-height: 1.7;
  color: var(--haze);
  transition: max-height .35s var(--ease), opacity .35s var(--ease), margin-top .35s var(--ease);
}

.page-about .about-node:hover .about-node__more,
.page-about .about-node:focus-within .about-node__more {
  max-height: 14rem;
  opacity: 1;
  margin-top: .55rem;
}

@media (hover: none) {
  .page-about .about-node__more {
    max-height: 14rem;
    opacity: 1;
    margin-top: .55rem;
  }
}

/* ---------- 团队 ---------- */
.page-about .about-crew {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.5rem;
}

@media (min-width: 780px) {
  .page-about .about-crew {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.5rem 2rem;
  }
}

.page-about .about-crew__item {
  padding-left: 1.1rem;
  border-left: 2px solid var(--cyan);
  transition: border-color .3s var(--ease);
}

.page-about .about-crew__item:hover {
  border-left-color: var(--magenta);
}

.page-about .about-crew__num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(1.9rem, 4.6vw, 2.7rem);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--star-white);
  margin-bottom: .5rem;
  transition: color .3s var(--ease);
}

.page-about .about-crew__item:hover .about-crew__num {
  color: var(--orange);
}

.page-about .about-crew__unit {
  font-size: .8rem;
  letter-spacing: .04em;
  margin-left: .3rem;
  color: var(--haze);
}

.page-about .about-crew__role {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: .95rem;
  line-height: 1.4;
  color: var(--star-white);
  margin: 0 0 .45rem;
}

.page-about .about-crew__item p {
  margin: 0;
  font-size: .88rem;
  line-height: 1.75;
  color: var(--haze);
}

/* ---------- 合作 ---------- */
.page-about .about-coop {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2rem;
  align-items: center;
}

@media (min-width: 880px) {
  .page-about .about-coop {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    gap: 3rem;
  }
}

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

.page-about .about-coop__list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .25rem .9rem;
  padding: 1.1rem 1.15rem;
  background: var(--ink-orbit);
  transition: background .3s var(--ease);
}

.page-about .about-coop__list li:hover {
  background: var(--ink-nebula);
}

.page-about .about-coop__num {
  grid-row: span 2;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 1.5rem;
  line-height: 1.1;
  color: var(--orange);
}

.page-about .about-coop__name {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: .95rem;
  color: var(--star-white);
}

.page-about .about-coop__desc {
  grid-column: 2;
  font-size: .85rem;
  line-height: 1.72;
  color: var(--haze);
}

.page-about .about-coop__media {
  margin: 0;
  max-width: 420px;
  width: 100%;
  justify-self: center;
}

/* ---------- 维护承诺（奶油纸面） ---------- */
.page-about .about-pledge {
  position: relative;
  background: var(--paper);
  color: var(--ink-brown);
  padding: clamp(2.25rem, 5vw, 4rem) 0;
  margin-top: clamp(1rem, 3vw, 2rem);
}

.page-about .about-pledge::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .45;
  background-image: radial-gradient(rgba(32, 22, 15, .12) 1px, transparent 1px);
  background-size: 5px 5px;
}

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

.page-about .about-pledge__tick {
  display: inline-block;
  margin: 0;
  padding: .25rem .7rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .18em;
  color: var(--ink-brown);
  border: 1px solid rgba(32, 22, 15, .35);
}

.page-about .about-pledge h2 {
  color: var(--ink-brown);
  margin-top: .9rem;
}

.page-about .about-pledge__lead {
  color: var(--ink-brown);
  opacity: .82;
  line-height: 1.85;
  max-width: 62ch;
  margin: 0 0 2rem;
}

.page-about .about-pledge__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.5rem;
}

@media (min-width: 780px) {
  .page-about .about-pledge__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 2rem;
  }
}

.page-about .about-pledge__item {
  padding-top: .9rem;
  border-top: 2px solid rgba(255, 61, 139, .55);
}

.page-about .about-pledge__num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(1.25rem, 3vw, 1.7rem);
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--ink-brown);
  margin-bottom: .55rem;
}

.page-about .about-pledge__item p {
  margin: 0;
  font-size: .9rem;
  line-height: 1.8;
  color: var(--ink-brown);
  opacity: .86;
}

.page-about .about-pledge__foot {
  margin: 2.25rem 0 0;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(32, 22, 15, .18);
  font-size: .9rem;
  line-height: 1.85;
  color: var(--ink-brown);
  max-width: 72ch;
}

.page-about .about-pledge__foot a {
  color: var(--ink-brown);
  text-decoration: underline;
  text-decoration-color: rgba(255, 61, 139, .7);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.page-about .about-pledge__foot a:hover {
  text-decoration-color: var(--ink-brown);
}

/* ---------- 页尾行动区 ---------- */
.page-about .about-next {
  border-top: 1px solid var(--line-softer);
}

.page-about .about-next__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem 2.5rem;
  align-items: center;
  justify-content: space-between;
}

.page-about .about-next__text {
  flex: 1 1 320px;
  min-width: 0;
}

.page-about .about-next__text h2 {
  margin-top: 0;
}

.page-about .about-next__text p {
  margin: 0;
  color: var(--haze);
  line-height: 1.85;
  max-width: 48ch;
}

.page-about .about-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .85rem;
  flex: 0 1 auto;
}

@media (max-width: 559px) {
  .page-about .about-next__actions {
    width: 100%;
  }

  .page-about .about-next__actions .btn {
    flex: 1 1 auto;
    justify-content: center;
  }
}
<<<END>>>