.page-about .about-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 6vw, 64px);
  padding-top: clamp(14px, 3vw, 28px);
  align-items: start;
}

.page-about .about-main {
  min-width: 0;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(22px, 5vw, 44px) 0 clamp(30px, 6vw, 56px);
  overflow: hidden;
}
.page-about .about-hero::after {
  content: "";
  position: absolute;
  top: -90px;
  right: -70px;
  width: min(56vw, 320px);
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(108, 59, 255, .32), rgba(108, 59, 255, 0) 68%);
  pointer-events: none;
  z-index: 0;
}
.page-about .about-hero > * {
  position: relative;
  z-index: 1;
}
.page-about .about-hero__title {
  margin: 12px 0 0;
  max-width: 14em;
}
.page-about .about-hero__lede {
  margin: clamp(16px, 3vw, 24px) 0 0;
  max-width: 42em;
}
.page-about .about-hero__lede + .about-hero__lede {
  margin-top: 14px;
}
.page-about .about-hero__lede a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(63, 240, 208, .45);
}
.page-about .about-hero__lede a:hover,
.page-about .about-hero__lede a:focus-visible {
  border-bottom-color: var(--cyan);
}

/* ---------- 章节骨架 ---------- */
.page-about .about-sec {
  position: relative;
  padding: clamp(34px, 6vw, 64px) 0;
  scroll-margin-top: 110px;
}
.page-about .about-sec + .about-sec {
  border-top: 1px solid var(--line);
}
.page-about .about-sec + .about-sec::after {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 58px;
  height: 1px;
  background: var(--cyan);
}
.page-about .about-sec__head {
  display: flex;
  gap: clamp(10px, 2vw, 18px);
  align-items: flex-start;
  margin-bottom: clamp(14px, 3vw, 24px);
}
.page-about .about-sec__no {
  flex: none;
  min-width: 14px;
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1;
  letter-spacing: .22em;
  color: var(--purple-lift);
  padding-top: 3px;
}
.page-about .about-sec__lead {
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.78;
  color: var(--text);
  opacity: .82;
  max-width: 40em;
}
.page-about .about-sec__lead + .about-sec__lead {
  margin-top: -4px;
}
.page-about .about-sec__lead a,
.page-about .about-cta a,
.page-about .about-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(63, 240, 208, .4);
}
.page-about .about-sec__lead a:hover,
.page-about .about-cta a:hover,
.page-about .about-note a:hover,
.page-about .about-sec__lead a:focus-visible,
.page-about .about-cta a:focus-visible,
.page-about .about-note a:focus-visible {
  border-bottom-color: var(--cyan);
}

/* ---------- 团队构成 ---------- */
.page-about .about-roles {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-about .about-role {
  padding: 16px 0 16px 16px;
  border-left: 2px solid var(--panel-2);
}
.page-about .about-role + .about-role {
  margin-top: 12px;
}
.page-about .about-role__n {
  margin: 0;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--cyan);
}
.page-about .about-role__t {
  margin: 5px 0 7px;
  font-size: 18px;
  line-height: 1.4;
  color: var(--text);
}
.page-about .about-role p:last-child {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text);
  opacity: .74;
}

/* ---------- 配图 ---------- */
.page-about .about-figure {
  position: relative;
  margin: clamp(22px, 4vw, 34px) 0 0;
  border: 1px solid var(--line);
  background: var(--panel);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
  overflow: hidden;
}
.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-about .about-figure figcaption {
  padding: 10px 14px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: .04em;
  color: var(--dim);
}

/* ---------- 生产流程 ---------- */
.page-about .about-steps {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-about .about-step {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 12px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}
.page-about .about-step:first-child {
  border-top: 1px solid var(--line);
}
.page-about .about-step__n {
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--purple-lift);
  padding-top: 4px;
}
.page-about .about-step__b h3 {
  margin: 0 0 6px;
  font-size: 17px;
  line-height: 1.4;
  color: var(--text);
}
.page-about .about-step__b p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text);
  opacity: .74;
}

/* ---------- 赛季栏目 ---------- */
.page-about .about-cols {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 clamp(18px, 3vw, 26px);
  padding: 0;
}
.page-about .about-cols li {
  padding: 7px 15px;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--text);
  background: var(--panel);
  border: 1px solid var(--line);
  clip-path: polygon(9px 0, 100% 0, 100% calc(100% - 9px), calc(100% - 9px) 100%, 0 100%, 0 9px);
}
.page-about .about-cols li:nth-child(1),
.page-about .about-cols li:nth-child(5) {
  border-color: rgba(63, 240, 208, .38);
  color: var(--cyan);
}

/* ---------- 合作生态 ---------- */
.page-about .about-collab {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin: 0 0 clamp(18px, 3vw, 26px);
}
.page-about .about-collab__item {
  padding: 16px 16px 18px;
  border-left: 3px solid var(--purple);
  background: linear-gradient(90deg, rgba(108, 59, 255, .12), rgba(108, 59, 255, 0) 76%);
}
.page-about .about-collab__item:nth-child(2) {
  border-left-color: var(--cyan);
  background: linear-gradient(90deg, rgba(63, 240, 208, .12), rgba(63, 240, 208, 0) 76%);
}
.page-about .about-collab__item h3 {
  margin: 0 0 7px;
  font-size: 17px;
  line-height: 1.4;
  color: var(--text);
}
.page-about .about-collab__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text);
  opacity: .74;
}
.page-about .about-cta {
  margin-bottom: 0;
}

/* ---------- 里程碑 ---------- */
.page-about .about-miles {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-about .about-miles li {
  position: relative;
  padding: 0 0 26px 24px;
  border-left: 1px solid var(--line);
}
.page-about .about-miles li::before {
  content: "";
  position: absolute;
  left: -4px;
  top: 5px;
  width: 7px;
  height: 7px;
  background: var(--cyan);
  transform: rotate(45deg);
}
.page-about .about-miles li:nth-child(3)::before {
  background: var(--amber);
}
.page-about .about-miles li:last-child {
  padding-bottom: 0;
}
.page-about .about-miles__phase {
  margin: 0;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--purple-lift);
}
.page-about .about-miles li h3 {
  margin: 6px 0 7px;
  font-size: 17px;
  line-height: 1.4;
  color: var(--text);
}
.page-about .about-miles li p:last-child {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text);
  opacity: .74;
}

/* ---------- 合规 ---------- */
.page-about .about-note {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-about .about-note li {
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
  line-height: 1.78;
  color: var(--text);
  opacity: .8;
}
.page-about .about-note li:first-child {
  border-top: 1px solid var(--line);
}
.page-about .about-note .mono {
  display: inline-block;
  min-width: 3.6em;
  margin-right: 10px;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--cyan);
  opacity: 1;
}

/* ---------- 侧栏 ---------- */
.page-about .about-side {
  min-width: 0;
}
.page-about .about-side__inner {
  border-top: 1px solid var(--line);
  padding-top: 16px;
}
.page-about .about-side__cap {
  margin: 0;
  font-size: 11px;
  letter-spacing: .26em;
  color: var(--dim);
}
.page-about .about-toc {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  counter-reset: toc;
}
.page-about .about-toc li {
  counter-increment: toc;
}
.page-about .about-toc__link {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 9px 2px;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.5;
  color: var(--dim);
  text-decoration: none;
  transition: color .2s var(--ease), padding-left .2s var(--ease);
}
.page-about .about-toc__link::before {
  content: counter(toc, decimal-leading-zero);
  flex: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--purple-lift);
}
.page-about .about-toc__link:hover,
.page-about .about-toc__link:focus-visible {
  color: var(--text);
  padding-left: 6px;
}
.page-about .about-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 20px;
}
.page-about .about-fact {
  padding: 13px 13px 12px;
  background: var(--panel);
  border-top: 2px solid var(--purple);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
}
.page-about .about-fact:nth-child(2),
.page-about .about-fact:nth-child(4) {
  border-top-color: var(--cyan);
}
.page-about .about-fact__v {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(24px, 6.5vw, 34px);
  line-height: 1.05;
  letter-spacing: .02em;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}
.page-about .about-fact__v span {
  margin-left: 3px;
  font-size: 13px;
  color: var(--dim);
}
.page-about .about-fact__l {
  margin: 7px 0 0;
  font-size: 12px;
  line-height: 1.55;
  color: var(--dim);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .about-collab {
    grid-template-columns: 1fr 1fr;
  }
  .page-about .about-roles {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }
  .page-about .about-role + .about-role {
    margin-top: 0;
  }
}

@media (min-width: 900px) {
  .page-about .about-layout {
    grid-template-columns: 58fr 42fr;
    column-gap: clamp(28px, 4vw, 56px);
  }
  .page-about .about-side__inner {
    position: sticky;
    top: 96px;
    border-top: 0;
    border-left: 1px solid var(--line);
    padding-top: 0;
    padding-left: clamp(20px, 2.6vw, 34px);
  }
  .page-about .about-facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1120px) {
  .page-about .about-step {
    grid-template-columns: 48px 1fr;
  }
  .page-about .about-miles li {
    padding-left: 30px;
  }
}

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