.page-about {
  --about-panel-bg: color-mix(in srgb, var(--color-surface) 76%, transparent);
  --about-panel-line: color-mix(in srgb, var(--color-primary) 15%, transparent);
  --about-glass-sheen: color-mix(in srgb, var(--color-primary-ink) 46%, transparent);
  --about-stamp-col: calc(var(--space-8) * 2.5);

  position: relative;
  padding-bottom: var(--section-y-lg);
  background:
    radial-gradient(circle at 4% -6%, color-mix(in srgb, var(--color-primary) 26%, transparent) 0%, transparent 54%),
    radial-gradient(circle at 102% 8%, color-mix(in srgb, var(--color-accent) 22%, transparent) 0%, transparent 52%),
    radial-gradient(circle at 46% 104%, color-mix(in srgb, var(--color-primary) 15%, transparent) 0%, transparent 58%),
    var(--color-surface);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  overflow-x: hidden;
}

/* ---------- 通用小件 ---------- */
.page-about .about-section {
  padding-block: var(--section-y);
}

.page-about .about-section--last {
  padding-bottom: 0;
}

.page-about .about-section__head {
  max-width: var(--measure);
  margin-bottom: var(--space-6);
}

.page-about .about-section h2 {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-2xl);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
  margin: var(--space-2) 0 var(--space-3);
}

@media (min-width: 760px) {
  .page-about .about-section h2 {
    font-size: var(--text-3xl);
  }
}

.page-about .about-section h3 {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: var(--leading-heading);
  color: var(--color-ink);
  margin: 0 0 var(--space-1);
}

.page-about .about-section p {
  color: var(--color-ink-soft);
  max-width: var(--measure);
}

.page-about .about-section .lede {
  color: var(--color-ink-soft);
}

/* ---------- 玻璃面板 ---------- */
.page-about .about-panel {
  position: relative;
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  border: var(--border-thin) solid var(--about-panel-line);
  background: var(--about-panel-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow:
    inset 0 0 0 1px var(--about-glass-sheen),
    var(--shadow-1);
  transition: transform .28s ease, box-shadow .28s ease;
}

.page-about .about-panel:hover {
  transform: translateY(-3px);
  box-shadow:
    inset 0 0 0 1px var(--about-glass-sheen),
    var(--shadow-2);
}

/* ---------- 图片容器 ---------- */
.page-about .about-media {
  position: relative;
  display: block;
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: var(--border-thin) solid var(--about-panel-line);
  background: var(--color-surface-deep);
  box-shadow: var(--shadow-1);
}

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

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-top: calc(var(--space-8) + var(--space-3));
  padding-bottom: var(--section-y);
}

.page-about .about-hero__grid {
  display: grid;
  gap: var(--space-6);
  margin-top: var(--space-4);
}

.page-about .about-hero__lead h1 {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-3xl);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
  margin: var(--space-2) 0 var(--space-3);
  max-width: 20ch;
}

.page-about .about-hero__lead .lede {
  max-width: 56ch;
  color: var(--color-ink-soft);
}

.page-about .about-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3) var(--space-6);
  list-style: none;
  margin: var(--space-6) 0 0;
  padding: var(--space-3) 0 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-about .about-hero__facts li {
  display: grid;
  gap: var(--space-1);
  min-width: 96px;
}

.page-about .about-hero__facts .num {
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--color-primary);
  line-height: 1.1;
}

.page-about .about-hero__facts .cap {
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}

.page-about .about-hero__figure {
  border-radius: var(--radius-lg);
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: end;
    gap: var(--space-8);
  }

  .page-about .about-hero__lead h1 {
    font-size: clamp(var(--text-3xl), 4.4vw, var(--text-4xl));
  }
}

/* ---------- 章节跟随目录 ---------- */
.page-about .about-nav {
  position: sticky;
  top: calc(var(--space-8) + var(--space-2));
  z-index: 20;
  padding-block: var(--space-2);
  background: color-mix(in srgb, var(--color-surface) 84%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-top: var(--border-thin) solid var(--color-line);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-about .about-nav__inner {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  overflow-x: auto;
  scrollbar-width: none;
}

.page-about .about-nav__inner::-webkit-scrollbar {
  display: none;
}

.page-about .about-nav__title {
  flex: none;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--color-ink-muted);
}

.page-about .about-nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  flex: 1 1 auto;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-nav__link {
  display: block;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-pill);
  border: var(--border-thin) solid transparent;
  font-size: var(--text-sm);
  white-space: nowrap;
  text-decoration: none;
  color: var(--color-ink-soft);
  transition: background-color .2s ease, color .2s ease, border-color .2s ease;
}

.page-about .about-nav__link:hover {
  background: var(--color-primary-soft);
  color: var(--color-primary);
}

.page-about .about-nav__link.is-active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-primary-ink);
}

.page-about .about-nav__top {
  flex: none;
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  white-space: nowrap;
  text-decoration: none;
  color: var(--color-ink-muted);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-about .about-nav__top:hover {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

/* ---------- 起点与时间线 ---------- */
.page-about .about-origin {
  display: grid;
  gap: var(--space-4);
}

.page-about .about-origin__head h2 {
  max-width: 18ch;
}

.page-about .about-origin__body p + p {
  margin-top: var(--space-3);
}

@media (min-width: 900px) {
  .page-about .about-origin {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: var(--space-8);
    align-items: start;
  }

  .page-about .about-origin__head h2 {
    margin-top: var(--space-2);
  }
}

.page-about .about-tl {
  list-style: none;
  margin: var(--space-6) 0 0;
  padding: 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-about .about-tl__item {
  display: block;
  padding-block: var(--space-4);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-about .about-tl__stamp {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  margin: 0 0 var(--space-1);
  max-width: none;
}

.page-about .about-tl__stamp .mono {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--color-primary);
}

.page-about .about-tl__tag {
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

.page-about .about-tl__body p {
  margin: 0;
  font-size: var(--text-base);
}

@media (min-width: 760px) {
  .page-about .about-tl__item {
    display: grid;
    grid-template-columns: var(--about-stamp-col) minmax(0, 1fr);
    gap: var(--space-6);
    align-items: baseline;
  }

  .page-about .about-tl__stamp {
    flex-direction: column;
    gap: var(--space-1);
    margin-bottom: 0;
  }

  .page-about .about-tl__stamp .mono {
    font-size: var(--text-lg);
  }
}

/* ---------- 团队角色 ---------- */
.page-about .about-roles__head {
  max-width: var(--measure);
  margin-bottom: var(--space-6);
}

.page-about .about-roles__list {
  margin: 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-about .about-roles__row {
  display: block;
  padding-block: var(--space-4);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-about .about-roles__row dt {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: var(--leading-heading);
  color: var(--color-ink);
  margin-bottom: var(--space-1);
}

.page-about .about-roles__idx {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--color-accent);
}

.page-about .about-roles__row dd {
  margin: 0;
  color: var(--color-ink-soft);
  max-width: var(--measure);
}

.page-about .about-roles__row dd a {
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: var(--border-thin) solid color-mix(in srgb, var(--color-primary) 40%, transparent);
}

.page-about .about-roles__row dd a:hover {
  border-bottom-color: var(--color-primary);
}

@media (min-width: 760px) {
  .page-about .about-roles__row {
    display: grid;
    grid-template-columns: var(--about-stamp-col) minmax(0, 1fr);
    gap: var(--space-6);
    align-items: start;
  }

  .page-about .about-roles__row dt {
    margin-bottom: 0;
  }
}

/* ---------- 协作 ---------- */
.page-about .about-coop {
  display: grid;
  gap: var(--space-4);
}

.page-about .about-coop__cards {
  display: grid;
  gap: var(--space-3);
}

.page-about .about-coop__card h3 {
  margin-top: var(--space-1);
}

.page-about .about-coop__card p {
  margin: 0;
}

.page-about .about-coop__num {
  font-family: var(--font-mono);
  font-size: var(--text-3xl);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--color-accent);
  margin: 0;
}

@media (min-width: 860px) {
  .page-about .about-coop {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    align-items: stretch;
    gap: var(--space-6);
  }

  .page-about .about-coop__figure {
    height: 100%;
  }

  .page-about .about-coop__figure img {
    height: 100%;
    object-fit: cover;
  }

  .page-about .about-coop__cards {
    grid-template-columns: minmax(0, 1fr);
    align-content: stretch;
  }

  .page-about .about-coop__card {
    display: flex;
    flex-direction: column;
    justify-content: center;
  }
}

/* ---------- 赛季范围（深色看板） ---------- */
.page-about .about-scope__board {
  position: relative;
  overflow: hidden;
  padding: var(--space-6) var(--space-4);
  border-radius: var(--radius-lg);
  border: var(--border-thin) solid color-mix(in srgb, var(--color-contrast-accent) 30%, transparent);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  box-shadow: var(--shadow-2);
}

.page-about .about-scope__board::after {
  content: "";
  position: absolute;
  inset-inline-start: -14%;
  inset-block-start: -46%;
  width: 62%;
  height: 150%;
  background: radial-gradient(circle at 50% 50%, color-mix(in srgb, var(--color-contrast-accent) 24%, transparent) 0%, transparent 68%);
  pointer-events: none;
}

.page-about .about-scope__head {
  position: relative;
  z-index: 1;
  max-width: var(--measure);
}

.page-about .about-scope__head h2 {
  color: var(--color-contrast-ink);
}

.page-about .about-scope__head p {
  color: color-mix(in srgb, var(--color-contrast-ink) 78%, transparent);
  max-width: 54ch;
}

.page-about .about-scope__metrics {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-2);
  list-style: none;
  margin: var(--space-6) 0 0;
  padding: 0;
}

.page-about .about-scope__metrics li {
  padding: var(--space-3);
  border-radius: var(--radius-md);
  border: var(--border-thin) solid var(--color-contrast-line);
  background: color-mix(in srgb, var(--color-contrast-ink) 7%, transparent);
}

.page-about .about-scope__metrics .num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-3xl);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--color-contrast-accent);
}

.page-about .about-scope__metrics .cap {
  display: block;
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  line-height: 1.5;
  color: color-mix(in srgb, var(--color-contrast-ink) 76%, transparent);
}

.page-about .about-scope__after {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-6);
}

.page-about .about-scope__note {
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  border: var(--border-thin) solid var(--about-panel-line);
  background: var(--about-panel-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: inset 0 0 0 1px var(--about-glass-sheen), var(--shadow-1);
}

.page-about .about-scope__note p {
  margin: 0;
}

.page-about .about-scope__note a {
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: var(--border-thin) solid color-mix(in srgb, var(--color-primary) 40%, transparent);
}

.page-about .about-scope__note a:hover {
  border-bottom-color: var(--color-primary);
}

@media (min-width: 760px) {
  .page-about .about-scope__board {
    padding: var(--space-8) var(--space-6);
  }

  .page-about .about-scope__metrics {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--space-3);
  }

  .page-about .about-scope__after {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: center;
    gap: var(--space-6);
  }
}

/* ---------- 出口 ---------- */
.page-about .about-cta__panel {
  display: grid;
  gap: var(--space-4);
  padding: var(--space-6) var(--space-4);
  border-radius: var(--radius-lg);
  border: var(--border-thin) solid var(--about-panel-line);
  background:
    linear-gradient(135deg,
      color-mix(in srgb, var(--color-primary) 13%, transparent) 0%,
      color-mix(in srgb, var(--color-accent) 11%, transparent) 100%),
    var(--about-panel-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: inset 0 0 0 1px var(--about-glass-sheen), var(--shadow-1);
}

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

.page-about .about-cta__text p {
  margin: 0;
  max-width: 56ch;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

@media (min-width: 860px) {
  .page-about .about-cta__panel {
    grid-template-columns: minmax(0, 1.4fr) auto;
    align-items: center;
    gap: var(--space-6);
    padding: var(--space-6);
  }
}
<<<END>>>