/* ===== 赛场文化 / page-about ===== */

.page-about {
  --rail-w: 208px;
  --rail-gap: 46px;
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 40px 0 54px;
  background:
    radial-gradient(120% 90% at 88% 6%, rgba(34, 223, 210, 0.09) 0%, transparent 58%),
    linear-gradient(158deg, var(--pitch) 0%, var(--ink) 68%);
  border-bottom: 1px solid var(--line);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -160px;
  right: -140px;
  width: 440px;
  height: 440px;
  background: var(--moss);
  opacity: 0.42;
  border-radius: 46% 54% 62% 38% / 52% 40% 60% 48%;
  transform: rotate(-14deg);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: -100px;
  bottom: -210px;
  width: 340px;
  height: 340px;
  background: var(--clay);
  opacity: 0.14;
  border-radius: 58% 42% 38% 62% / 44% 58% 42% 56%;
  pointer-events: none;
}

.page-about .about-hero > .shell {
  position: relative;
  z-index: 1;
}

.page-about .about-hero .breadcrumb {
  margin: 0 0 24px;
  font-size: 0.82rem;
  color: var(--stone);
}

.page-about .about-hero .breadcrumb a {
  color: var(--stone);
}

.page-about .hero-title {
  margin: 12px 0 18px;
  max-width: 20ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 5.6vw, 3.6rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--bone);
}

.page-about .hero-lead {
  max-width: 64ch;
  margin: 0;
  font-size: 1.02rem;
  line-height: 1.85;
  color: rgba(243, 238, 228, 0.78);
}

.page-about .hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 36px;
  margin: 32px 0 0;
  padding: 22px 0 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.page-about .hero-facts li {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-about .hero-facts .num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--electric);
  line-height: 1;
}

.page-about .hero-facts em {
  font-style: normal;
  font-size: 0.84rem;
  color: var(--stone);
}

/* ---------- 主体骨架 ---------- */

.page-about .about-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  align-items: start;
  padding-top: 44px;
  padding-bottom: 72px;
}

/* ---------- 左侧索引 ---------- */

.page-about .about-rail {
  padding: 12px;
  background: rgba(16, 38, 28, 0.62);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
}

.page-about .rail-title {
  margin: 2px 0 10px;
  padding-left: 10px;
  font-family: var(--font-num);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--stone);
  text-transform: uppercase;
}

.page-about .rail-nav {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: thin;
}

.page-about .rail-link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.86rem;
  color: rgba(243, 238, 228, 0.62);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .rail-link .num {
  font-family: var(--font-num);
  font-size: 0.7rem;
  color: var(--stone);
  transition: color var(--dur) var(--ease);
}

.page-about .rail-link:hover {
  color: var(--bone);
  background: rgba(47, 74, 56, 0.45);
  border-color: var(--moss);
}

.page-about .rail-link:hover .num {
  color: var(--electric);
}

/* ---------- 内容列 ---------- */

.page-about .about-main {
  display: flex;
  flex-direction: column;
  gap: 72px;
  min-width: 0;
}

.page-about .about-section {
  min-width: 0;
  scroll-margin-top: 96px;
}

.page-about .about-head {
  max-width: 62ch;
  margin-bottom: 26px;
}

.page-about .about-head h2 {
  margin: 10px 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 3.1vw, 2.15rem);
  line-height: 1.22;
  letter-spacing: -0.015em;
  color: var(--bone);
}

.page-about .about-head p {
  margin: 0;
  line-height: 1.8;
  color: rgba(243, 238, 228, 0.7);
}

/* ---------- 时间轴 ---------- */

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

.page-about .stage-item {
  position: relative;
  padding: 0 0 0 26px;
  border-left: 1px solid var(--line);
}

.page-about .stage-item:last-child {
  border-left-color: transparent;
}

.page-about .stage-node {
  position: relative;
  display: block;
  width: 100%;
  padding: 0 0 4px;
  text-align: left;
  background: none;
  border: 0;
  color: inherit;
  font: inherit;
  cursor: pointer;
}

.page-about .stage-node::before {
  content: "";
  position: absolute;
  top: 7px;
  left: -32px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--stone);
  box-shadow: 0 0 0 4px var(--ink);
  transition: background var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .stage-node[aria-expanded="true"]::before {
  background: var(--electric);
  box-shadow: 0 0 0 4px var(--pitch);
}

.page-about .stage-time {
  display: block;
  font-family: var(--font-num);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  color: var(--stone);
}

.page-about .stage-name {
  display: block;
  margin-top: 4px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.02rem;
  line-height: 1.3;
  color: var(--bone);
}

.page-about .stage-panel {
  padding: 10px 0 30px;
  font-size: 0.94rem;
  line-height: 1.8;
  color: rgba(243, 238, 228, 0.68);
}

.page-about .stage-panel p {
  margin: 0;
}

.page-about .stage-node[aria-expanded="false"] + .stage-panel {
  display: none;
}

/* ---------- 团队分工矩阵 ---------- */

.page-about .team-matrix {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 14px;
}

.page-about .team-cell {
  grid-column: span 12;
  position: relative;
  padding: 22px 20px 20px;
  background: rgba(47, 74, 56, 0.26);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .team-cell::after {
  content: "";
  position: absolute;
  top: 0;
  left: 20px;
  width: 34px;
  height: 2px;
  background: var(--clay);
}

.page-about .team-cell:hover,
.page-about .team-cell:focus-within {
  background: rgba(47, 74, 56, 0.48);
  border-color: var(--moss);
}

.page-about .team-cell:hover::after,
.page-about .team-cell:focus-within::after {
  background: var(--electric);
}

.page-about .team-cell:focus-visible {
  outline: 2px solid var(--electric);
  outline-offset: 2px;
}

.page-about .team-count {
  margin: 8px 0 10px;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--stone);
}

.page-about .team-count .num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--gold);
}

.page-about .team-role {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.22rem;
  color: var(--bone);
}

.page-about .team-line {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.75;
  color: rgba(243, 238, 228, 0.72);
}

.page-about .team-detail {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.3s var(--ease), opacity 0.3s var(--ease), margin-top 0.3s var(--ease);
}

.page-about .team-cell:hover .team-detail,
.page-about .team-cell:focus-within .team-detail {
  max-height: 420px;
  margin-top: 14px;
  opacity: 1;
}

.page-about .team-detail p {
  margin: 0 0 10px;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-size: 0.9rem;
  line-height: 1.75;
  color: rgba(243, 238, 228, 0.66);
}

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

.page-about .team-detail a {
  color: var(--electric);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 223, 210, 0.4);
}

.page-about .team-detail a:hover {
  border-bottom-color: var(--electric);
}

.page-about .team-partner {
  font-family: var(--font-num);
  font-size: 0.78rem !important;
  letter-spacing: 0.04em;
  color: var(--stone) !important;
  border-top: 0 !important;
}

/* ---------- 图片容器 ---------- */

.page-about .about-figure {
  margin: 26px 0 0;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

/* ---------- 校对流程 ---------- */

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

.page-about .flow-step {
  padding: 18px 0 20px;
  border-top: 2px solid var(--line);
}

.page-about .flow-step:last-child {
  border-top-color: var(--signal);
}

.page-about .flow-idx {
  display: block;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  color: var(--stone);
}

.page-about .flow-name {
  margin: 6px 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--bone);
}

.page-about .flow-step p {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.78;
  color: rgba(243, 238, 228, 0.68);
}

.page-about .flow-note {
  margin: 24px 0 0;
  padding: 14px 16px;
  border-left: 2px solid var(--electric);
  background: rgba(16, 38, 28, 0.5);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.9rem;
  line-height: 1.78;
  color: rgba(243, 238, 228, 0.7);
}

/* ---------- 档案层级 ---------- */

.page-about .archive-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
}

.page-about .arch-level {
  padding: 14px 0 4px 18px;
  border-left: 2px solid var(--line);
}

.page-about .arch-level--league {
  border-left-color: var(--clay);
}

.page-about .arch-level--season {
  border-left-color: var(--gold);
}

.page-about .arch-level--team {
  border-left-color: var(--electric);
}

.page-about .arch-level--player {
  border-left-color: var(--signal);
  padding-bottom: 14px;
}

.page-about .arch-label {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 4px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1rem;
  color: var(--bone);
}

.page-about .arch-label .num {
  font-family: var(--font-num);
  font-size: 0.7rem;
  color: var(--stone);
}

.page-about .arch-desc {
  margin: 0 0 6px;
  font-size: 0.88rem;
  line-height: 1.7;
  color: rgba(243, 238, 228, 0.62);
}

.page-about .archive-side {
  min-width: 0;
}

.page-about .archive-side .about-figure {
  margin-top: 0;
}

.page-about .archive-note {
  margin: 18px 0 0;
  font-size: 0.93rem;
  line-height: 1.8;
  color: rgba(243, 238, 228, 0.7);
}

.page-about .archive-note a {
  color: var(--electric);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 223, 210, 0.4);
}

.page-about .archive-note a:hover {
  border-bottom-color: var(--electric);
}

/* ---------- 本地与覆盖 ---------- */

.page-about .local-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
}

.page-about .local-title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.06rem;
  color: var(--bone);
}

.page-about .local-title + .local-points,
.page-about .local-title + .cover-stats {
  margin-top: 0;
}

.page-about .local-points {
  margin: 0 0 26px;
  padding: 0;
  list-style: none;
}

.page-about .local-points li {
  position: relative;
  padding: 9px 0 9px 22px;
  font-size: 0.93rem;
  line-height: 1.75;
  color: rgba(243, 238, 228, 0.7);
  border-bottom: 1px solid var(--line);
}

.page-about .local-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--electric);
}

.page-about .cover-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
}

.page-about .cover-stats li {
  padding: 12px 14px;
  background: rgba(16, 38, 28, 0.6);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.page-about .cover-value {
  display: block;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 1.18rem;
  font-weight: 700;
  color: var(--gold);
}

.page-about .cover-label {
  display: block;
  margin-top: 4px;
  font-size: 0.78rem;
  color: var(--stone);
}

.page-about .local-note {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.78;
  color: rgba(243, 238, 228, 0.66);
}

.page-about .local-note a {
  color: var(--electric);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 223, 210, 0.4);
}

.page-about .local-note a:hover {
  border-bottom-color: var(--electric);
}

.page-about .local-split .about-figure {
  margin-top: 0;
}

/* ---------- 合作与认可 ---------- */

.page-about .partner-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.page-about .partner-card {
  padding: 20px 16px;
  background: rgba(47, 74, 56, 0.26);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
}

.page-about .partner-value {
  margin: 0;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1;
  color: var(--signal);
}

.page-about .partner-label {
  margin: 10px 0 0;
  font-size: 0.86rem;
  line-height: 1.7;
  color: rgba(243, 238, 228, 0.68);
}

/* ---------- 收尾行动 ---------- */

.page-about .about-cta {
  padding: 26px 22px;
  background: linear-gradient(140deg, rgba(47, 74, 56, 0.6) 0%, rgba(11, 15, 13, 0.9) 70%);
  border: 1px solid var(--line);
  border-left: 3px solid var(--signal);
  border-radius: var(--radius-md);
}

.page-about .cta-inner {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.page-about .cta-lede {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.1rem, 2.6vw, 1.5rem);
  line-height: 1.3;
  color: var(--bone);
}

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

/* ---------- 平板及以上 ---------- */

@media (min-width: 700px) {
  .page-about .flow-rail {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 26px;
  }

  .page-about .flow-step {
    padding-right: 4px;
  }

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

  .page-about .cover-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 桌面端 ---------- */

@media (min-width: 900px) {
  .page-about .about-body {
    grid-template-columns: var(--rail-w) minmax(0, 1fr);
    gap: var(--rail-gap);
    padding-top: 56px;
    padding-bottom: 96px;
  }

  .page-about .about-rail {
    position: sticky;
    top: 88px;
    padding: 16px 14px;
  }

  .page-about .rail-nav {
    flex-direction: column;
    gap: 2px;
    overflow-x: visible;
    padding-bottom: 0;
  }

  .page-about .rail-link {
    display: flex;
    padding: 9px 12px;
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    white-space: normal;
  }

  .page-about .rail-link:hover {
    background: rgba(47, 74, 56, 0.42);
    border-left-color: var(--electric);
  }

  .page-about .stage-track {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .stage-item {
    padding: 0 20px 0 0;
    border-left: 0;
  }

  .page-about .stage-item:last-child {
    padding-right: 0;
    border-left-color: transparent;
  }

  .page-about .stage-item::before {
    content: "";
    position: absolute;
    top: 12px;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--line);
  }

  .page-about .stage-item:last-child::before {
    right: calc(100% - 11px);
  }

  .page-about .stage-node {
    padding-top: 36px;
  }

  .page-about .stage-node::before {
    top: 7px;
    left: 0;
  }

  .page-about .stage-node[aria-expanded="true"]::before {
    box-shadow: 0 0 0 4px var(--ink);
  }

  .page-about .stage-panel {
    padding: 12px 0 0;
  }

  .page-about .team-cell:nth-child(1) {
    grid-column: span 7;
  }

  .page-about .team-cell:nth-child(2) {
    grid-column: span 5;
  }

  .page-about .team-cell:nth-child(3) {
    grid-column: span 5;
  }

  .page-about .team-cell:nth-child(4) {
    grid-column: span 7;
  }

  .page-about .archive-layout {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    gap: 34px;
  }

  .page-about .local-split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 34px;
  }

  .page-about .cta-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 26px;
  }
}

/* ---------- 无悬停设备：职责信息直接展开 ---------- */

@media (hover: none) {
  .page-about .team-detail {
    max-height: none;
    opacity: 1;
    margin-top: 14px;
  }
}

/* ---------- 窄屏微调 ---------- */

@media (max-width: 560px) {
  .page-about .about-hero {
    padding: 30px 0 42px;
  }

  .page-about .hero-facts {
    gap: 14px 24px;
  }

  .page-about .about-main {
    gap: 56px;
  }

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

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

  .page-about .team-cell,
  .page-about .partner-card {
    padding: 18px 16px;
  }

  .page-about .cta-actions .btn {
    flex: 1 1 auto;
    text-align: center;
  }
}
</main>