/* ===== 赛场团队 / page-about ===== */

.page-about {
  --about-rule: var(--hairline);
  --about-rule-dim: var(--hairline-dim);
  --about-num: clamp(56px, 12vw, 96px);
  padding-top: 88px;
  padding-bottom: 72px;
  color: var(--cream);
}

.page-about .about-coord {
  margin: 0 0 20px;
  color: var(--muted);
  letter-spacing: 0.22em;
}

/* ---------- 首屏 ---------- */

.page-about .about-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  align-items: end;
}

.page-about .about-title {
  margin: 0 0 20px;
  color: var(--cream);
  line-height: 0.98;
  letter-spacing: -0.02em;
}

.page-about .about-lead {
  max-width: 46ch;
  margin: 0 0 28px;
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-hero-art {
  margin: 0;
  box-shadow: var(--shadow-hard);
}

/* ---------- 章节胶囊索引 ---------- */

.page-about .about-index {
  margin-top: 12px;
}

.page-about .about-index-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 6px;
  list-style: none;
  margin: 0;
  padding: 14px 0;
  border-top: 1px solid var(--about-rule-dim);
  border-bottom: 1px solid var(--about-rule-dim);
}

.page-about .about-index-link {
  display: inline-block;
  padding: 6px 14px;
  border: 1px solid var(--hairline);
  border-radius: var(--r-pill);
  background: var(--surface-soft);
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0.1em;
  text-decoration: none;
  transition: color .18s ease, background-color .18s ease, border-color .18s ease;
}

.page-about .about-index-link:hover,
.page-about .about-index-link:focus-visible {
  color: var(--ink);
  background: var(--orange);
  border-color: var(--orange);
  outline: none;
}

/* ---------- 通用小标题区 ---------- */

.page-about .about-head {
  margin-bottom: 34px;
}

.page-about .about-head--compact {
  margin-bottom: 28px;
}

.page-about .about-head .section-title {
  margin: 6px 0 14px;
}

.page-about .about-head .section-lead {
  max-width: 52ch;
  margin: 0;
}

/* ---------- 01 分工 ---------- */

.page-about .about-role-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--about-rule);
}

.page-about .about-role {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 26px 0;
  border-bottom: 1px solid var(--about-rule);
}

.page-about .about-role-figure {
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.page-about .about-role-num {
  font-family: var(--font-display);
  font-size: 56px;
  line-height: .82;
  letter-spacing: -0.03em;
  color: var(--orange);
  font-variant-numeric: tabular-nums;
}

.page-about .about-role-unit {
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-about .about-role-title {
  margin: 0 0 8px;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--cream);
}

.page-about .about-role-body p {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.75;
  max-width: 52ch;
}

/* ---------- 02 班次表 ---------- */

.page-about .about-shift-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
}

.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 4px;
  position: relative;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 14px;
  bottom: 18px;
  width: 1px;
  background: var(--about-rule);
}

.page-about .about-shift-item {
  position: relative;
  padding: 0 0 34px 40px;
}

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

.page-about .about-shift-item::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 10px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 0 4px rgba(255, 122, 26, .16);
}

.page-about .about-shift-time {
  display: block;
  margin-bottom: 4px;
  color: var(--orange);
  letter-spacing: 0.2em;
}

.page-about .about-shift-title {
  margin: 0 0 8px;
  font-size: 20px;
  font-weight: 700;
  color: var(--cream);
}

.page-about .about-shift-item p {
  margin: 0;
  max-width: 50ch;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.75;
}

.page-about .about-shift-aside {
  display: grid;
  gap: 20px;
  align-content: start;
}

.page-about .about-shift-art {
  margin: 0;
  box-shadow: var(--shadow-hard-sm);
}

.page-about .about-shift-note {
  padding: 18px 20px;
  border: var(--bw) solid var(--line);
  border-radius: var(--r-card);
  background: var(--surface-soft);
}

.page-about .about-shift-note .annotation {
  margin: 0 0 8px;
  color: var(--yellow);
  letter-spacing: 0.2em;
}

.page-about .about-shift-note p:last-child {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.7;
}

/* ---------- 03 专题系列 ---------- */

.page-about .about-series-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.page-about .about-series-item {
  position: relative;
  padding: 24px 22px 22px;
  border: var(--bw) solid var(--line);
  border-radius: var(--r-card);
  background: linear-gradient(165deg, rgba(14, 42, 33, .92), rgba(6, 18, 14, .94));
  box-shadow: var(--shadow-hard-sm);
  overflow: hidden;
}

.page-about .about-series-item::after {
  content: "";
  position: absolute;
  right: -46px;
  top: -46px;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 122, 26, .22), transparent 68%);
  pointer-events: none;
}

.page-about .about-series-index {
  display: inline-block;
  margin-bottom: 12px;
  color: var(--line);
  letter-spacing: 0.24em;
}

.page-about .about-series-title {
  margin: 0 0 10px;
  font-size: 22px;
  font-weight: 800;
  color: var(--cream);
}

.page-about .about-series-item p {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.75;
}

.page-about .about-series-link {
  display: inline-block;
  color: var(--edge);
  font-size: 14px;
  letter-spacing: 0.04em;
  text-decoration: none;
  border-bottom: 1px solid var(--hairline);
  padding-bottom: 2px;
}

.page-about .about-series-link:hover,
.page-about .about-series-link:focus-visible {
  color: var(--orange);
  border-color: var(--orange);
  outline: none;
}

.page-about .about-series-item--cup {
  border-color: var(--hairline);
}

/* ---------- 04 版本通道 ---------- */

.page-about .about-versions-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}

.page-about .about-versions-intro .section-title {
  margin: 6px 0 14px;
}

.page-about .about-versions-intro .section-lead {
  margin: 0;
  max-width: 46ch;
}

.page-about .about-version-cards {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-about .about-version-card {
  padding: 22px 20px;
  border: var(--bw) solid var(--line);
  border-radius: var(--r-card);
  background: var(--surface-soft);
}

.page-about .about-version-card--stable {
  border-left: 6px solid var(--orange);
}

.page-about .about-version-card--beta {
  border-left: 6px solid var(--yellow);
}

.page-about .about-version-card .status-pill {
  margin-bottom: 12px;
}

.page-about .about-version-title {
  margin: 0 0 8px;
  font-size: 20px;
  font-weight: 700;
  color: var(--cream);
}

.page-about .about-version-card p {
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.75;
}

.page-about .about-version-link {
  color: var(--edge);
  font-size: 14px;
  text-decoration: none;
  border-bottom: 1px solid var(--hairline);
  padding-bottom: 2px;
}

.page-about .about-version-link:hover,
.page-about .about-version-link:focus-visible {
  color: var(--orange);
  border-color: var(--orange);
  outline: none;
}

/* ---------- 05 内容来源 ---------- */

.page-about .about-sources-art {
  margin: 0 0 32px;
  box-shadow: var(--shadow-hard);
}

.page-about .about-sources-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}

.page-about .about-sources-copy .section-title {
  margin: 6px 0 14px;
}

.page-about .about-sources-copy p:last-child {
  margin: 0;
  max-width: 44ch;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.75;
}

.page-about .about-partner-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-about .about-partner {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 20px;
  border: 1px solid var(--hairline);
  border-radius: var(--r-card);
  background: rgba(14, 42, 33, .6);
}

.page-about .about-partner-num {
  font-family: var(--font-display);
  font-size: 44px;
  line-height: .9;
  letter-spacing: -0.03em;
  color: var(--cream);
  font-variant-numeric: tabular-nums;
}

.page-about .about-partner-title {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 700;
  color: var(--cream);
}

.page-about .about-partner-body p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.7;
}

/* ---------- 06 联系 ---------- */

.page-about .about-feedback-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}

.page-about .about-feedback-main .section-title {
  margin: 6px 0 14px;
}

.page-about .about-feedback-main .section-lead {
  margin: 0 0 24px;
  max-width: 48ch;
}

.page-about .about-contact-list {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  border-top: 1px solid var(--about-rule-dim);
}

.page-about .about-contact-list li {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding: 12px 0;
  border-bottom: 1px solid var(--about-rule-dim);
}

.page-about .about-contact-key {
  color: var(--muted);
  letter-spacing: 0.16em;
}

.page-about .about-contact-val {
  color: var(--cream);
  font-size: 15px;
  line-height: 1.6;
  word-break: break-word;
}

.page-about .about-feedback-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-feedback-aside {
  padding: 24px 22px;
  border: var(--bw) solid var(--line);
  border-left: 6px solid var(--orange);
  border-radius: var(--r-card);
  background: var(--surface-soft);
}

.page-about .about-feedback-aside-title {
  margin: 0 0 16px;
  font-size: 18px;
  font-weight: 700;
  color: var(--cream);
}

.page-about .about-check-list {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
}

.page-about .about-check-list li {
  position: relative;
  padding: 7px 0 7px 22px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.6;
  border-bottom: 1px dashed var(--about-rule-dim);
}

.page-about .about-check-list li:last-child {
  border-bottom: none;
}

.page-about .about-check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 15px;
  width: 9px;
  height: 2px;
  background: var(--orange);
}

.page-about .about-feedback-note {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

/* ---------- 响应式 ---------- */

@media (min-width: 760px) {
  .page-about .about-role {
    grid-template-columns: 160px minmax(0, 1fr);
    gap: 44px;
    padding: 34px 0;
  }

  .page-about .about-role-num {
    font-size: 84px;
  }

  .page-about .about-contact-list li {
    grid-template-columns: 110px minmax(0, 1fr);
  }
}

@media (min-width: 900px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
  }

  .page-about .about-shift-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 52px;
    align-items: start;
  }

  .page-about .about-versions-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 48px;
    align-items: start;
  }

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

  .page-about .about-sources-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    gap: 44px;
    align-items: start;
  }

  .page-about .about-feedback-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
    align-items: start;
  }
}

@media (min-width: 1000px) {
  .page-about .about-series-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }

  .page-about .about-series-item--cup {
    transform: translateY(28px);
  }

  .page-about .about-series-item--derby {
    transform: translateY(12px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-series-item--cup,
  .page-about .about-series-item--derby {
    transform: none;
  }
}