.page-about {
  --about-gap: 32px;
  --about-rail-w: 250px;
  background: var(--ink);
  color: var(--fog);
  overflow-x: hidden;
}

/* ---------- 头部 ---------- */
.page-about .about-head {
  position: relative;
  padding: calc(var(--header-h) + 48px) 0 44px;
  overflow: hidden;
  background:
    radial-gradient(120% 90% at 88% 4%, rgba(56, 242, 176, 0.18), transparent 62%),
    radial-gradient(90% 80% at 2% 96%, rgba(91, 200, 255, 0.14), transparent 66%),
    linear-gradient(180deg, var(--ink-deep) 0%, var(--ink) 100%);
}

.page-about .about-head::after {
  content: "";
  position: absolute;
  right: -14%;
  bottom: -180px;
  width: 420px;
  height: 420px;
  border-radius: 46% 54% 58% 42% / 52% 44% 56% 48%;
  background: radial-gradient(circle at 32% 30%, rgba(255, 106, 61, 0.22), transparent 68%);
  pointer-events: none;
}

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

.page-about .about-head .eyebrow {
  margin-top: 18px;
}

.page-about .about-head h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2rem, 8vw, 4.2rem);
  line-height: 1.04;
  letter-spacing: 0.01em;
  color: var(--fog);
  margin: 14px 0 18px;
  max-width: 20ch;
}

.page-about .about-head .lede {
  max-width: 46ch;
  font-size: 1rem;
  line-height: 1.85;
  color: rgba(244, 247, 245, 0.82);
}

.page-about .about-head__figures {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 14px;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--hair-soft);
}

.page-about .about-fig {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.page-about .about-fig__num {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--mint);
  letter-spacing: 0.01em;
}

.page-about .about-fig__label {
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  color: var(--sage);
}

/* ---------- 主体骨架 ---------- */
.page-about .about-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap);
  padding-top: 36px;
  padding-bottom: 72px;
}

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

/* ---------- 侧栏目录 ---------- */
.page-about .about-rail {
  padding: 22px 20px;
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(17, 59, 49, 0.78), rgba(12, 15, 14, 0.62));
}

.page-about .about-rail__title {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  color: var(--sage);
  margin: 0 0 14px;
}

.page-about .about-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-about .about-rail__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px;
  border-radius: 12px;
  color: var(--fog);
  text-decoration: none;
  font-size: 0.9rem;
  line-height: 1.5;
  transition: background 0.25s var(--ease), color 0.25s var(--ease);
}

.page-about .about-rail__list a:hover,
.page-about .about-rail__list a:focus-visible {
  background: rgba(56, 242, 176, 0.12);
  color: var(--mint);
}

.page-about .about-rail__idx {
  flex: none;
  font-size: 0.7rem;
  color: var(--sage);
}

.page-about .about-rail__note {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--hair-soft);
  font-size: 0.82rem;
  line-height: 1.65;
  color: var(--fog);
}

.page-about .about-rail__note p {
  margin: 0 0 4px;
}

.page-about .about-rail__note-label {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.2em;
  color: var(--sage);
}

.page-about .about-rail__note .muted {
  margin-bottom: 0;
  font-size: 0.78rem;
  color: var(--sage);
}

/* ---------- 章节 ---------- */
.page-about .about-sec {
  padding-bottom: 52px;
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-about .about-sec + .about-sec {
  padding-top: 44px;
  border-top: 1px solid var(--hair-soft);
}

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

.page-about .about-sec__head {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 18px;
}

.page-about .about-sec__idx {
  flex: none;
  margin-top: 6px;
  padding: 3px 9px;
  border: 1px solid var(--hair);
  border-radius: 999px;
  font-size: 0.72rem;
  color: var(--mint);
}

.page-about .about-sec .section-title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(1.5rem, 5vw, 2.25rem);
  line-height: 1.28;
  color: var(--fog);
}

.page-about .about-sec__lede {
  margin: 0 0 26px;
  max-width: 44rem;
  font-size: 0.95rem;
  line-height: 1.85;
  color: rgba(244, 247, 245, 0.78);
}

/* ---------- 图片 ---------- */
.page-about .about-figure {
  margin: 0 0 26px;
  border: 1px solid var(--hair-soft);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--wall);
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
  filter: saturate(0.92) contrast(1.04);
}

.page-about .about-figure .media-caption {
  margin: 0;
  padding: 12px 16px;
  border-top: 1px solid var(--hair-soft);
  font-size: 0.76rem;
  line-height: 1.6;
  color: var(--sage);
}

.page-about .about-figure--team {
  margin-bottom: 0;
}

.page-about .about-figure--team img {
  aspect-ratio: 4 / 3;
}

.page-about .about-figure--timeline img {
  aspect-ratio: 14 / 7;
}

/* ---------- 起点三栏 ---------- */
.page-about .about-cols {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-about .about-col {
  padding: 18px;
  border-radius: 16px;
  background: rgba(17, 59, 49, 0.55);
  border-left: 3px solid var(--mint);
}

.page-about .about-col:nth-child(2) {
  border-left-color: var(--orange);
}

.page-about .about-col:nth-child(3) {
  border-left-color: var(--ice);
}

.page-about .about-col h3 {
  margin: 0 0 8px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--fog);
}

.page-about .about-col p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.78;
  color: rgba(244, 247, 245, 0.74);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  margin-bottom: 22px;
}

.page-about .about-team__figures {
  padding: 24px 20px;
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  background:
    radial-gradient(120% 120% at 100% 0%, rgba(56, 242, 176, 0.16), transparent 60%),
    var(--char);
}

.page-about .about-team__big {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding-bottom: 16px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--hair-soft);
}

.page-about .about-team__big .num {
  font-family: var(--font-mono);
  font-size: clamp(2.6rem, 12vw, 3.8rem);
  font-weight: 700;
  line-height: 1;
  color: var(--mint);
}

.page-about .about-team__big span:last-child {
  font-size: 0.82rem;
  letter-spacing: 0.16em;
  color: var(--sage);
}

.page-about .about-team__split {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.page-about .about-team__split li {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
  font-size: 0.74rem;
  line-height: 1.4;
  color: var(--sage);
}

.page-about .about-team__split .num {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--fog);
}

.page-about .about-roles {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-about .about-roles li {
  padding: 16px 18px;
  border: 1px solid var(--hair-soft);
  border-radius: 14px;
  background: rgba(12, 15, 14, 0.5);
}

.page-about .about-roles h3 {
  margin: 0 0 6px;
  font-size: 0.94rem;
  font-weight: 600;
  color: var(--fog);
}

.page-about .about-roles p {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.72;
  color: rgba(244, 247, 245, 0.72);
}

/* ---------- 产品原则 ---------- */
.page-about .about-pairs {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-bottom: 22px;
}

.page-about .about-pair {
  position: relative;
  overflow: hidden;
  padding: 20px;
  border: 1px solid var(--hair-soft);
  border-radius: var(--radius);
  background: var(--char);
}

.page-about .about-pair::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 4px;
  background: var(--orange);
}

.page-about .about-pair--away::before {
  left: auto;
  right: 0;
  background: var(--ice);
}

.page-about .about-pair .tag {
  margin: 0 0 12px;
}

.page-about .about-pair h3 {
  margin: 0 0 8px;
  font-size: 1.04rem;
  font-weight: 600;
  color: var(--fog);
}

.page-about .about-pair p:last-child {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.76;
  color: rgba(244, 247, 245, 0.76);
}

.page-about .about-rules {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-about .about-rule {
  padding: 16px 18px;
  border-radius: 14px;
  border-top: 2px solid var(--mint);
  background: linear-gradient(150deg, rgba(17, 59, 49, 0.62), rgba(12, 15, 14, 0.42));
}

.page-about .about-rule:nth-child(2) {
  border-top-color: var(--lime);
}

.page-about .about-rule:nth-child(3) {
  border-top-color: var(--ice);
}

.page-about .about-rule h3 {
  margin: 0 0 6px;
  font-size: 0.94rem;
  font-weight: 600;
  color: var(--fog);
}

.page-about .about-rule p {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.72;
  color: rgba(244, 247, 245, 0.72);
}

/* ---------- 赛季时间线 ---------- */
.page-about .about-sec .filter-bar {
  margin-bottom: 24px;
}

.page-about .about-timeline {
  position: relative;
  list-style: none;
  margin: 0 0 26px;
  padding: 0 0 0 24px;
  display: grid;
  gap: 18px;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--mint), rgba(91, 200, 255, 0.42), rgba(255, 106, 61, 0.36));
}

.page-about .about-timeline li {
  position: relative;
  padding: 14px 16px;
  border: 1px solid var(--hair-soft);
  border-radius: 14px;
  background: rgba(12, 15, 14, 0.55);
}

.page-about .about-timeline li::before {
  content: "";
  position: absolute;
  left: -27px;
  top: 20px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--mint);
}

.page-about .about-timeline li[data-topics~="对照"]::before {
  border-color: var(--orange);
}

.page-about .about-timeline li[data-topics~="数据"]::before {
  border-color: var(--ice);
}

.page-about .about-timeline li[data-topics~="同步"]::before {
  border-color: var(--lime);
}

.page-about .about-timeline li[hidden] {
  display: none;
}

.page-about .about-timeline__season {
  margin: 0 0 6px;
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--mint);
}

.page-about .about-timeline li h3 {
  margin: 0 0 6px;
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--fog);
}

.page-about .about-timeline li p:last-child {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.72;
  color: rgba(244, 247, 245, 0.72);
}

/* ---------- 合作与认可 ---------- */
.page-about .about-partners {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-about .about-partners li {
  padding: 18px;
  border: 1px solid var(--hair-soft);
  border-radius: 16px;
  background: rgba(17, 59, 49, 0.42);
}

.page-about .about-partners h3 {
  margin: 0 0 6px;
  font-size: 0.94rem;
  font-weight: 600;
  color: var(--mint);
}

.page-about .about-partners p {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.75;
  color: rgba(244, 247, 245, 0.74);
}

.page-about .about-awards {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-about .about-award {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 18px;
  border-radius: 14px;
  border-left: 2px solid var(--lime);
  background: linear-gradient(120deg, rgba(56, 242, 176, 0.1), rgba(12, 15, 14, 0.22));
}

.page-about .about-award__year {
  flex: none;
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--lime);
}

.page-about .about-award p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--fog);
}

/* ---------- 服务入口 ---------- */
.page-about .about-service {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  padding: 24px 22px;
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  background:
    radial-gradient(110% 120% at 100% 0%, rgba(91, 200, 255, 0.16), transparent 62%),
    var(--char);
}

.page-about .about-service__contact p {
  margin: 0 0 8px;
  font-size: 0.94rem;
  line-height: 1.6;
}

.page-about .about-service__contact p.mono {
  font-family: var(--font-mono);
  color: var(--mint);
  word-break: break-all;
}

.page-about .about-service__contact p.muted {
  margin-bottom: 6px;
  font-size: 0.82rem;
  color: var(--sage);
}

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

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

.page-about .about-colophon {
  margin: 26px 0 0;
  padding-top: 16px;
  border-top: 1px dashed var(--hair-soft);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  line-height: 1.8;
  color: var(--sage);
}

/* ---------- 中等屏 ---------- */
@media (min-width: 760px) {
  .page-about .about-head {
    padding: calc(var(--header-h) + 76px) 0 64px;
  }

  .page-about .about-head__figures {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px;
  }

  .page-about .about-fig__num {
    font-size: 1.75rem;
  }

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

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

  .page-about .about-figure--team {
    height: 100%;
    display: flex;
    flex-direction: column;
  }

  .page-about .about-figure--team img {
    flex: 1;
    min-height: 0;
    aspect-ratio: auto;
    height: 100%;
  }

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

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

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

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

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

  .page-about .about-service {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    align-items: center;
    padding: 28px 26px;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-about .about-shell {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
    padding-top: 48px;
    padding-bottom: 96px;
  }

  .page-about .about-rail {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }

  .page-about .about-sec__head {
    gap: 16px;
  }

  .page-about .about-sec__lede {
    font-size: 1rem;
  }

  .page-about .about-timeline {
    padding-left: 30px;
    gap: 14px;
  }

  .page-about .about-timeline li::before {
    left: -33px;
  }
}

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