.page-about {
  --about-line: rgba(34, 49, 79, 0.85);
}

.page-about [id] {
  scroll-margin-top: 110px;
}

.page-about img {
  max-width: 100%;
  height: auto;
}

/* 首屏 */
.page-about .about-hero {
  position: relative;
  padding: 8px 0 44px;
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: -12% -12% 0 -12%;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity: 0.5;
  -webkit-mask-image: radial-gradient(120% 85% at 15% 0%, #000 22%, transparent 74%);
  mask-image: radial-gradient(120% 85% at 15% 0%, #000 22%, transparent 74%);
  pointer-events: none;
}

.page-about .about-hero > .shell {
  position: relative;
}

.page-about .about-hero__grid {
  display: grid;
  gap: 28px;
  margin-top: 22px;
}

.page-about .about-hero__copy .eyebrow {
  margin: 0 0 12px;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
}

.page-about .about-hero h1 {
  margin: 0 0 18px;
  color: var(--paper);
}

.page-about .about-hero .lead {
  max-width: 40em;
  margin: 0;
  color: var(--paper-2);
  font-size: 16px;
  line-height: 1.8;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .about-hero__figure {
  position: relative;
  margin: 0;
}

.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  border-radius: var(--radius);
  object-fit: cover;
}

.page-about .about-hero__figure::after {
  content: "";
  position: absolute;
  inset: 0 auto auto 0;
  width: 100%;
  height: 6px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--cyan), var(--violet) 60%, var(--amber));
  opacity: 0.9;
}

.page-about .about-hero__figure figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--slate);
}

/* 关键数字 */
.page-about .about-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 34px 0 0;
  padding: 0;
  background: var(--grid);
  border: 1px solid var(--grid);
  border-radius: 18px;
  overflow: hidden;
}

.page-about .about-facts__item {
  margin: 0;
  padding: 16px 14px;
  background: var(--ink-2);
}

.page-about .about-facts dt {
  margin: 0 0 6px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--slate);
}

.page-about .about-facts dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 19px;
  color: var(--paper);
}

/* 主体与章节索引 */
.page-about .about-body {
  padding-bottom: 72px;
}

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

.page-about .about-sec {
  padding: 44px 0 10px;
  border-top: 1px solid var(--about-line);
}

.page-about .about-sec:first-child {
  border-top: 0;
  padding-top: 12px;
}

.page-about .about-sec__head {
  margin-bottom: 24px;
}

.page-about .about-sec__eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-about .about-sec h2 {
  margin: 0 0 12px;
  color: var(--paper);
}

.page-about .about-sec__lede {
  margin: 0;
  max-width: 58ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--paper-2);
}

.page-about .about-text {
  margin: 20px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--slate);
}

.page-about .about-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 227, 180, 0.5);
}

.page-about .about-link:hover {
  color: var(--paper);
  border-bottom-color: var(--amber);
}

/* 时间轴 */
.page-about .about-timeline {
  position: relative;
  display: grid;
  gap: 22px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan), var(--violet), var(--amber));
}

.page-about .about-timeline li {
  position: relative;
  padding-left: 32px;
}

.page-about .about-timeline__node {
  display: block;
  text-decoration: none;
  color: inherit;
}

.page-about .about-timeline__dot {
  position: absolute;
  left: 0;
  top: 8px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  border: 2px solid var(--cyan);
  background: var(--ink);
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .about-timeline__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-about .about-timeline__title {
  display: block;
  margin: 4px 0 6px;
  font-size: 16px;
  font-weight: 700;
  color: var(--paper);
  transition: color 0.2s var(--ease);
}

.page-about .about-timeline__text {
  display: block;
  font-size: 14px;
  line-height: 1.7;
  color: var(--slate);
}

.page-about .about-timeline__node:hover .about-timeline__title {
  color: var(--cyan);
}

.page-about .about-timeline__node:hover .about-timeline__dot {
  background: var(--cyan);
}

.page-about .about-stages {
  display: grid;
  gap: 14px;
  margin-top: 26px;
}

.page-about .about-stage {
  padding: 18px 16px;
  border: 1px solid var(--grid);
  border-radius: 16px;
  background: rgba(16, 26, 46, 0.62);
}

.page-about .about-stage h3 {
  margin: 0 0 8px;
  font-size: 16px;
  color: var(--paper);
}

.page-about .about-stage p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate);
}

/* 团队 */
.page-about .about-team__cards {
  display: grid;
  gap: 14px;
}

.page-about .about-team__card {
  position: relative;
  padding: 22px 18px 18px;
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--ink);
  overflow: hidden;
}

.page-about .about-team__bar {
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  background: linear-gradient(90deg, var(--cyan), var(--violet));
}

.page-about .about-team__num {
  margin: 0 0 4px;
  font-family: var(--font-mono);
  font-size: 34px;
  line-height: 1;
  color: var(--ink);
}

.page-about .about-team__card h3 {
  margin: 8px 0 10px;
  font-size: 17px;
  color: var(--ink);
}

.page-about .about-team__card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-2);
}

.page-about .about-team__figure {
  position: relative;
  margin: 22px 0 0;
}

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  border-radius: var(--radius);
  border: 1px solid var(--grid);
  object-fit: cover;
}

.page-about .about-team__figure figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--slate);
}

/* 编目流程 */
.page-about .about-flow {
  display: grid;
  gap: 20px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-flow__step {
  position: relative;
  padding-left: 56px;
}

.page-about .about-flow__step::after {
  content: "";
  position: absolute;
  left: 19px;
  top: 48px;
  bottom: -20px;
  width: 1px;
  background: var(--grid);
}

.page-about .about-flow__step:last-child::after {
  display: none;
}

.page-about .about-flow__num {
  position: absolute;
  left: 0;
  top: 0;
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  border: 1px solid var(--grid);
  background: var(--ink-2);
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--cyan);
}

.page-about .about-flow__step h3 {
  margin: 6px 0 8px;
  font-size: 17px;
  color: var(--paper);
}

.page-about .about-flow__step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--slate);
}

.page-about .about-meta-grid {
  display: grid;
  gap: 1px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  background: var(--grid);
  border: 1px solid var(--grid);
  border-radius: 18px;
  overflow: hidden;
}

.page-about .about-meta-grid li {
  padding: 16px;
  background: var(--ink-2);
}

.page-about .about-meta-grid__key {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--amber);
}

.page-about .about-meta-grid__val {
  display: block;
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate);
}

/* 分区 */
.page-about .about-zones {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-zone {
  position: relative;
  padding: 20px 14px 14px;
  border: 1px solid var(--grid);
  border-radius: 16px;
  background: var(--ink-2);
  overflow: hidden;
}

.page-about .about-zone::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), var(--violet));
}

.page-about .about-zone:nth-child(3n + 2)::before {
  background: linear-gradient(90deg, var(--cyan), var(--amber));
}

.page-about .about-zone:nth-child(3n)::before {
  background: linear-gradient(90deg, var(--violet), var(--amber));
}

.page-about .about-zone__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1;
  color: var(--paper);
}

.page-about .about-zone__label {
  display: block;
  margin: 6px 0 10px;
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-about .about-zone p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--slate);
}

.page-about .about-zones__figure {
  position: relative;
  margin: 22px 0 0;
}

.page-about .about-zones__figure img {
  display: block;
  width: 100%;
  border-radius: var(--radius);
  border: 1px solid var(--grid);
  object-fit: cover;
}

.page-about .about-zones__figure figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--slate);
}

/* 合作生态 */
.page-about .about-partners {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-partner {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 16px;
  border: 1px solid var(--grid);
  border-radius: 16px;
  background: rgba(16, 26, 46, 0.55);
  transition: transform 0.24s var(--ease), border-color 0.24s var(--ease);
}

.page-about .about-partner:hover,
.page-about .about-partner:focus-within {
  transform: translateY(-4px);
  border-color: rgba(0, 227, 180, 0.55);
}

.page-about .about-partner__swatch {
  display: block;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(150deg, var(--cyan), var(--violet));
}

.page-about .about-partner:nth-child(2) .about-partner__swatch {
  background: linear-gradient(150deg, var(--violet), var(--amber));
}

.page-about .about-partner:nth-child(3) .about-partner__swatch {
  background: linear-gradient(150deg, var(--amber), var(--red));
}

.page-about .about-partner:nth-child(4) .about-partner__swatch {
  background: linear-gradient(150deg, var(--violet), var(--cyan));
}

.page-about .about-partner:nth-child(5) .about-partner__swatch {
  background: linear-gradient(150deg, var(--cyan), var(--amber));
}

.page-about .about-partner:nth-child(6) .about-partner__swatch {
  background: linear-gradient(150deg, var(--red), var(--violet));
}

.page-about .about-partner__num {
  margin: 0 0 4px;
  font-family: var(--font-mono);
  font-size: 17px;
  color: var(--paper);
}

.page-about .about-partner__title {
  margin: 0 0 6px;
  font-size: 15px;
  color: var(--paper);
}

.page-about .about-partner__role {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--slate);
}

/* 赛季日历 */
.page-about .about-calendar {
  display: grid;
  gap: 16px;
}

.page-about .about-season {
  padding: 20px 18px;
  border: 1px solid var(--grid);
  border-radius: var(--radius);
  background: var(--ink-2);
}

.page-about .about-season__head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
}

.page-about .about-season__tag {
  padding: 4px 10px;
  border-radius: var(--pill);
  background: var(--cyan);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
}

.page-about .about-season:nth-child(2) .about-season__tag {
  background: var(--violet);
  color: var(--paper);
}

.page-about .about-season h3 {
  margin: 0;
  font-size: 18px;
  color: var(--paper);
}

.page-about .about-season ul {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-season li {
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--about-line);
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate);
}

.page-about .about-season li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-about .about-season__time {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

/* 收尾 */
.page-about .about-cta {
  margin-top: 40px;
  padding: 26px 20px;
  border: 1px solid var(--grid);
  border-radius: var(--radius);
  background:
    linear-gradient(140deg, rgba(0, 227, 180, 0.14), rgba(123, 92, 255, 0.18) 55%, rgba(255, 176, 32, 0.12));
}

.page-about .about-cta h2 {
  margin: 0 0 10px;
  color: var(--paper);
}

.page-about .about-cta p {
  margin: 0;
  max-width: 52ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--paper-2);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

/* 章节索引 */
.page-about .about-index {
  display: none;
}

.page-about .about-index__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--slate);
}

.page-about .section-index__link {
  display: block;
  padding: 8px 0 8px 12px;
  border-left: 1px solid var(--grid);
  font-size: 13px;
  color: var(--slate);
  text-decoration: none;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-about .section-index__link:hover {
  color: var(--paper);
}

.page-about .section-index__link[aria-current="true"] {
  color: var(--cyan);
  border-left-color: var(--cyan);
}

/* 断点 */
@media (min-width: 640px) {
  .page-about .about-team__cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-meta-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 780px) {
  .page-about .about-hero {
    padding: 12px 0 64px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 40px;
    align-items: center;
  }

  .page-about .about-hero__figure img {
    clip-path: polygon(0 5%, 100% 0, 100% 95%, 0 100%);
  }

  .page-about .about-hero .lead {
    font-size: 17px;
  }

  .page-about .about-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin-top: 44px;
  }

  .page-about .about-timeline {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }

  .page-about .about-timeline::before {
    left: 6px;
    right: 6px;
    top: 7px;
    bottom: auto;
    width: auto;
    height: 1px;
    background: linear-gradient(90deg, var(--cyan), var(--violet), var(--amber));
  }

  .page-about .about-timeline li {
    padding-left: 0;
    padding-top: 32px;
  }

  .page-about .about-timeline__dot {
    left: 0;
    top: 0;
  }

  .page-about .about-stages {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
    margin-top: 30px;
  }

  .page-about .about-flow {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }

  .page-about .about-flow__step {
    padding-left: 0;
    padding-top: 56px;
  }

  .page-about .about-flow__step::after {
    left: 54px;
    right: -22px;
    top: 19px;
    bottom: auto;
    width: auto;
    height: 1px;
  }

  .page-about .about-zones {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
  }

  .page-about .about-partners {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-calendar {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-cta {
    padding: 32px 28px;
  }
}

@media (min-width: 1024px) {
  .page-about .about-body {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 200px;
    gap: 56px;
    align-items: start;
  }

  .page-about .about-index {
    display: block;
    position: sticky;
    top: 92px;
  }

  .page-about .about-sec {
    padding-top: 52px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-timeline__dot,
  .page-about .about-timeline__title,
  .page-about .about-partner,
  .page-about .section-index__link {
    transition: none;
  }

  .page-about .about-partner:hover,
  .page-about .about-partner:focus-within {
    transform: none;
  }
}
<<<END>>>