.page-about {
  --about-aside: 220px;
  --about-index-w: 176px;
  --node: var(--cyan);
}

.page-about .about-head {
  padding-block: clamp(22px, 4vw, 44px) clamp(16px, 2.5vw, 26px);
}

.page-about .page-title {
  max-width: 20ch;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.08;
  font-size: clamp(30px, 6.4vw, 60px);
  margin: 8px 0 0;
}

.page-about .page-lede {
  max-width: 38em;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.75;
  margin-top: 16px;
}

.page-about .breadcrumbs {
  padding-top: clamp(14px, 2vw, 22px);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-about .breadcrumbs a {
  color: var(--muted);
  text-decoration: none;
}

.page-about .breadcrumbs a:hover,
.page-about .breadcrumbs a:focus-visible {
  color: var(--cyan);
}

.page-about .breadcrumbs .divider {
  padding: 0 8px;
  color: var(--line);
}

/* 顶部横向长条图 */
.page-about .about-hero {
  position: relative;
  margin: 0 0 clamp(8px, 2vw, 18px);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  overflow: hidden;
  background: var(--panel-soft);
}

.page-about .about-hero img,
.page-about .about-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.86) contrast(1.06);
}

.page-about .about-hero .media-frame__caption {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

/* 主布局：索引 + 主列 */
.page-about .about-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  padding-bottom: clamp(40px, 6vw, 80px);
}

.page-about .about-index {
  min-width: 0;
  padding-top: 10px;
}

.page-about .about-index__label {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--amber);
  margin: 0 0 8px;
}

.page-about .about-index__list {
  display: flex;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0 0 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-index__link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
  text-decoration: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease),
    background-color var(--dur) var(--ease);
}

.page-about .about-index__link:hover,
.page-about .about-index__link:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan);
  background: var(--panel);
}

.page-about .about-index__no {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--amber);
}

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

/* 段落区块 */
.page-about .about-sec {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-areas:
    "num"
    "body"
    "note";
  gap: 12px;
  padding-block: clamp(26px, 4vw, 46px);
  border-top: 1px solid var(--line);
}

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

.page-about .about-sec__num {
  grid-area: num;
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(30px, 6vw, 48px);
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px var(--line);
  letter-spacing: 0.02em;
}

.page-about .about-sec__body {
  grid-area: body;
  min-width: 0;
}

.page-about .about-sec__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 3.6vw, 34px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  margin: 0 0 14px;
}

.page-about .prose p {
  max-width: 38em;
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text);
}

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

/* 旁注 */
.page-about .about-note {
  grid-area: note;
  min-width: 0;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  color: var(--muted);
}

.page-about .about-note__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  padding: 7px 0;
  border-bottom: 1px dashed var(--line);
}

.page-about .about-note__row:first-child {
  padding-top: 0;
}

.page-about .about-note__num {
  font-size: 14px;
  color: var(--text);
  white-space: nowrap;
}

.page-about .about-note__text {
  margin: 10px 0 0;
  line-height: 1.7;
  color: var(--muted);
}

/* 联赛色块 */
.page-about .about-leagues {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

/* 团队三条线 5:4:3 */
.page-about .about-team {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin-top: 20px;
}

.page-about .about-team__card {
  --card-accent: var(--cyan);
  background: var(--panel);
  border: 1px solid var(--line);
  border-top: 3px solid var(--card-accent);
  border-radius: var(--radius-m);
  padding: 16px;
}

.page-about .about-team__card--data {
  --card-accent: var(--indigo);
}

.page-about .about-team__card--edit {
  --card-accent: var(--coral);
}

.page-about .about-team__card--ux {
  --card-accent: var(--lime);
}

.page-about .about-team__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 17px;
  letter-spacing: -0.01em;
  margin: 0 0 8px;
}

.page-about .about-team__text {
  margin: 0 0 12px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .about-team__meta {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--card-accent);
}

.page-about .about-figure {
  margin: 20px 0 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  overflow: hidden;
  background: var(--panel-soft);
}

.page-about .about-figure .media-frame__caption {
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* 时间线 */
.page-about .about-timeline {
  position: relative;
  list-style: none;
  margin: 6px 0 0;
  padding: 0 0 0 30px;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 16px;
  width: 1px;
  background: var(--line);
}

.page-about .about-tl {
  --node: var(--cyan);
  position: relative;
  padding-bottom: 22px;
}

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

.page-about .about-tl::before {
  content: "";
  position: absolute;
  left: -27px;
  top: 6px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--node);
  box-shadow: 0 0 0 4px var(--ink);
}

.page-about .about-tl--indigo { --node: var(--indigo); }
.page-about .about-tl--violet { --node: var(--violet); }
.page-about .about-tl--amber  { --node: var(--amber); }
.page-about .about-tl--cyan   { --node: var(--cyan); }

.page-about .about-tl__year {
  margin: 0 0 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--node);
}

.page-about .about-tl__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 18px;
  letter-spacing: -0.01em;
  margin: 0 0 6px;
}

.page-about .about-tl__text {
  margin: 0;
  max-width: 36em;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

/* 读者规模 */
.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 20px;
  padding: clamp(18px, 3vw, 26px);
  background: var(--paper);
  border-radius: var(--radius-l);
  color: var(--ink);
}

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

.page-about .about-stats__num {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(24px, 5vw, 42px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-about .about-stats__label {
  margin: 8px 0 0;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: rgba(7, 21, 15, 0.62);
}

/* 准则 */
.page-about .about-principles {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: 18px;
}

.page-about .about-principle {
  border-left: 2px solid var(--line);
  padding-left: 14px;
}

.page-about .about-principle__idx {
  margin: 0 0 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--amber);
}

.page-about .about-principle__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 17px;
  margin: 0 0 6px;
}

.page-about .about-principle__text {
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

/* 下一步 */
.page-about .about-next {
  margin-top: 6px;
  padding: clamp(22px, 3.5vw, 34px);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  background: var(--panel);
}

.page-about .about-next__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(18px, 2.8vw, 24px);
  letter-spacing: -0.01em;
  margin: 0 0 16px;
}

.page-about .about-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

@media (min-width: 640px) {
  .page-about .about-team {
    grid-template-columns: 5fr 4fr;
  }
  .page-about .about-team__card--ux {
    grid-column: 1 / -1;
  }
  .page-about .about-principles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .about-layout {
    grid-template-columns: var(--about-index-w) minmax(0, 1fr);
    gap: 44px;
  }

  .page-about .about-index {
    position: sticky;
    top: 104px;
    align-self: start;
    padding-top: 26px;
  }

  .page-about .about-index__list {
    display: grid;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-about .about-index__link {
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0 var(--radius-s) var(--radius-s) 0;
    padding: 8px 10px;
    font-size: 13px;
  }

  .page-about .about-index__link:hover,
  .page-about .about-index__link:focus-visible {
    border-left-color: var(--cyan);
  }

  .page-about .about-team {
    grid-template-columns: 5fr 4fr 3fr;
  }

  .page-about .about-team__card--ux {
    grid-column: auto;
  }

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

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

@media (min-width: 1080px) {
  .page-about .about-sec {
    grid-template-columns: minmax(0, 1fr) var(--about-aside);
    grid-template-areas:
      "num note"
      "body note";
    gap: 0 40px;
  }

  .page-about .about-note {
    align-self: start;
    margin-top: 6px;
    padding-top: 2px;
    padding-left: 14px;
    border-top: 0;
    border-left: 2px solid var(--amber);
  }

  .page-about .about-sec__num {
    font-size: 52px;
    margin-bottom: 10px;
  }
}

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