.page-about {
  --about-body: #C6D2EA;
  --about-body-strong: #DFE7F8;
  --about-hair: rgba(31, 58, 110, 0.9);
  --about-paper-ink: #22365C;
  --about-radius: 16px;
  --about-pad: 22px;
}

.page-about .about-wrap {
  padding: 20px 16px 76px;
  display: grid;
  gap: 22px;
  align-content: start;
}

/* 面包屑 */
.page-about .about-crumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-num);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--dust);
}
.page-about .about-crumbs a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 180ms var(--ease);
}
.page-about .about-crumbs a:hover,
.page-about .about-crumbs a:focus-visible {
  border-bottom-color: var(--cyan);
}
.page-about .about-crumbs .sep {
  color: var(--ink-2);
}

/* 首屏 */
.page-about .about-top {
  display: grid;
  gap: 14px;
  max-width: 940px;
}
.page-about .about-kicker {
  margin: 0;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--orange);
}
.page-about h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(29px, 5.6vw, 50px);
  line-height: 1.1;
  letter-spacing: -0.012em;
  color: var(--moon);
}
.page-about .about-lede {
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--about-body);
  max-width: 44em;
}

.page-about .about-stats {
  list-style: none;
  margin: 6px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}
.page-about .stat {
  position: relative;
  border: 1px solid var(--ink-2);
  border-radius: 12px;
  background:
    linear-gradient(150deg, rgba(108, 74, 182, 0.22), rgba(20, 42, 85, 0.92) 62%);
  padding: 12px 14px;
  display: grid;
  gap: 2px;
}
.page-about .stat-num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: 24px;
  line-height: 1.1;
  color: var(--moon);
}
.page-about .stat-num--cyan { color: var(--cyan); }
.page-about .stat-num--orange { color: var(--orange); }
.page-about .stat-label {
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: var(--dust);
}

/* 主结构 */
.page-about .about-frame {
  display: grid;
  gap: 20px;
}

.page-about .rail-card {
  position: relative;
  overflow: hidden;
  border: 2px solid var(--ink-2);
  border-radius: var(--about-radius);
  background:
    linear-gradient(165deg, rgba(108, 74, 182, 0.30), rgba(11, 27, 58, 0.96) 46%),
    var(--ink-0);
  padding: 14px 14px 16px;
}
.page-about .rail-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(244, 247, 255, 0.6) 1px, transparent 1.4px);
  background-size: 26px 26px;
  opacity: 0.22;
  pointer-events: none;
}
.page-about .rail-title {
  position: relative;
  margin: 0 0 10px;
  font-family: var(--font-num);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--cyan);
  text-transform: uppercase;
}
.page-about .rail-svg { display: none; }

.page-about .season-list {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: flex;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: thin;
}
.page-about .season-list > li { flex: 0 0 auto; }

.page-about .season-node {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 6px 10px;
  border-radius: 9px;
  border: 1px solid transparent;
  background: rgba(11, 27, 58, 0.55);
  color: var(--about-body);
  text-decoration: none;
  transition: background-color 180ms var(--ease), border-color 180ms var(--ease), transform 180ms var(--ease);
}
.page-about .season-node:hover,
.page-about .season-node:focus-visible {
  background: rgba(0, 229, 255, 0.10);
  border-color: rgba(0, 229, 255, 0.55);
  transform: translateY(-2px);
}
.page-about .node-dot {
  width: 8px;
  height: 8px;
  flex: none;
  border-radius: 50%;
  border: 2px solid var(--cyan);
  background: var(--ink-0);
}
.page-about .node-label {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--moon);
  white-space: nowrap;
}
.page-about .node-sub {
  font-size: 11.5px;
  color: var(--dust);
  white-space: nowrap;
}
.page-about .rail-note {
  position: relative;
  margin: 10px 0 0;
  font-size: 11.5px;
  color: var(--dust);
}

/* 内容卡片 */
.page-about .about-flow {
  display: grid;
  gap: 22px;
  min-width: 0;
}
.page-about .about-card {
  position: relative;
  min-width: 0;
  margin-top: 10px;
  border: 2px solid var(--ink-2);
  border-radius: var(--about-radius);
  background: var(--ink-1);
  padding: var(--about-pad);
}
.page-about .card-idx {
  position: absolute;
  top: -12px;
  left: 16px;
  padding: 2px 9px;
  border-radius: 6px;
  border: 1px solid var(--ink-2);
  background: var(--ink-0);
  font-family: var(--font-num);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--cyan);
  white-space: nowrap;
}
.page-about .about-card h2 {
  margin: 8px 0 14px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(21px, 3.2vw, 29px);
  line-height: 1.18;
  color: var(--moon);
}
.page-about .about-card p {
  margin: 0 0 12px;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--about-body);
}
.page-about .about-card p:last-child { margin-bottom: 0; }
.page-about .about-card a { color: var(--cyan); text-decoration: none; border-bottom: 1px solid rgba(0, 229, 255, 0.35); }
.page-about .about-card a:hover,
.page-about .about-card a:focus-visible { border-bottom-color: var(--cyan); }

/* 反向月白区块 */
.page-about .about-card--paper {
  background: var(--moon);
  border-color: var(--ink-0);
  color: var(--ink-0);
}
.page-about .about-card--paper .card-idx {
  background: var(--ink-0);
  border-color: var(--ink-0);
  color: var(--moon);
}
.page-about .about-card--paper h2 { color: var(--ink-0); }
.page-about .about-card--paper p { color: var(--about-paper-ink); }
.page-about .about-card--paper a { color: #14418F; border-bottom-color: rgba(20, 65, 143, 0.4); }

/* 标签行 */
.page-about .chip-row {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.page-about .chip {
  padding: 4px 11px;
  border-radius: 999px;
  border: 1px solid var(--ink-2);
  background: rgba(108, 74, 182, 0.26);
  font-size: 12.5px;
  letter-spacing: 0.03em;
  color: var(--moon);
}

/* 图文分栏 */
.page-about .card-split {
  display: grid;
  gap: 18px;
}
.page-about .card-split-main { min-width: 0; }

.page-about .about-media {
  margin: 0;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--ink-2);
  background: linear-gradient(145deg, rgba(108, 74, 182, 0.42), rgba(0, 229, 255, 0.14));
}
.page-about .about-media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}
.page-about .about-media--wide { margin-bottom: 18px; }
.page-about .about-card--paper .about-media { border-color: var(--ink-0); }

/* 赛季条目 */
.page-about .era-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-about .era {
  display: grid;
  gap: 5px;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--about-hair);
  background: rgba(11, 27, 58, 0.6);
}
.page-about .era p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.68;
}
.page-about .era-key {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--cyan);
}

/* 分工比例条 */
.page-about .role-bars {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-about .role-bar {
  border: 1px solid var(--about-hair);
  border-radius: 12px;
  background: rgba(11, 27, 58, 0.62);
  padding: 12px 14px;
  transition: border-color 200ms var(--ease), transform 200ms var(--ease);
}
.page-about .role-bar:hover,
.page-about .role-bar:focus-within,
.page-about .role-bar:focus {
  border-color: rgba(0, 229, 255, 0.7);
  transform: translateY(-3px);
  outline: none;
}
.page-about .role-bar:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}
.page-about .role-bar-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 8px;
}
.page-about .role-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  color: var(--moon);
}
.page-about .role-count {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: 14px;
  color: var(--cyan);
}
.page-about .role-track {
  height: 8px;
  border-radius: 999px;
  background: rgba(31, 58, 110, 0.95);
  overflow: hidden;
}
.page-about .role-fill {
  display: block;
  height: 100%;
  border-radius: 999px;
}
.page-about .role-fill--purple { width: 58%; background: var(--nebula); }
.page-about .role-fill--cyan { width: 24%; background: var(--cyan); }
.page-about .role-fill--orange { width: 18%; background: var(--orange); }
.page-about .role-note {
  margin: 9px 0 0;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--dust);
}

/* 图例 */
.page-about .role-legend {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 12.5px;
  color: var(--dust);
}
.page-about .role-legend .legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
}
.page-about .legend-swatch {
  width: 14px;
  height: 6px;
  border-radius: 999px;
  background: var(--cyan);
}
.page-about .legend-swatch--purple { background: var(--nebula); }
.page-about .legend-swatch--orange { background: var(--orange); }

/* 引用段 */
.page-about .about-quote {
  margin: 18px 0 0;
  padding: 11px 0 11px 16px;
  border-left: 4px solid var(--orange);
  background: linear-gradient(100deg, rgba(255, 138, 61, 0.14), rgba(255, 138, 61, 0) 72%);
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--about-body-strong);
}

/* 通用条目列表 */
.page-about .about-list {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
  display: grid;
  gap: 10px;
}
.page-about .about-list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--about-body);
}
.page-about .about-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 9px;
  height: 2px;
  background: var(--cyan);
}
.page-about .about-list li strong {
  color: var(--moon);
  font-weight: 700;
}
.page-about .about-list--dark li { color: var(--about-paper-ink); }
.page-about .about-list--dark li::before { background: var(--nebula); }
.page-about .about-list--dark li strong { color: var(--ink-0); }
.page-about .paper-note {
  margin: 0 !important;
  padding-top: 12px;
  border-top: 1px solid rgba(11, 27, 58, 0.18);
  font-size: 13.5px !important;
  color: var(--about-paper-ink) !important;
}

.page-about .margin-note {
  margin: 14px 0 0 !important;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px dashed var(--ink-2);
  font-size: 13.5px !important;
  color: var(--dust) !important;
}

/* 徽标网格 */
.page-about .badge-grid {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}
.page-about .badge {
  display: grid;
  gap: 6px;
  align-content: start;
  padding: 13px 12px;
  border-radius: 12px;
  border: 1px solid var(--about-hair);
  background: rgba(11, 27, 58, 0.62);
  color: var(--cyan);
  transition: border-color 200ms var(--ease), transform 200ms var(--ease), background-color 200ms var(--ease);
}
.page-about .badge:hover,
.page-about .badge:focus-within {
  border-color: rgba(0, 229, 255, 0.65);
  transform: translateY(-3px);
  background: rgba(20, 42, 85, 0.95);
}
.page-about .badge:nth-child(3n + 2) { color: var(--nebula); }
.page-about .badge:nth-child(3n + 3) { color: var(--orange); }
.page-about .badge-icon {
  width: 30px;
  height: 30px;
  display: block;
}
.page-about .badge-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 14px;
  line-height: 1.3;
  color: var(--moon);
}
.page-about .badge-note {
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--dust);
}

/* 行动区 */
.page-about .about-cta {
  margin: 22px 0 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.page-about .about-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  border-radius: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.02em;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform 180ms var(--ease), background-color 180ms var(--ease), border-color 180ms var(--ease);
}
.page-about .about-btn:hover,
.page-about .about-btn:focus-visible {
  transform: translateY(-3px);
  outline: none;
  box-shadow: 0 0 0 2px var(--ink-0), 0 0 0 4px var(--cyan);
}
.page-about .about-btn--primary {
  background: var(--orange);
  color: var(--ink-0);
}
.page-about .about-btn--primary:hover { background: #FFA05E; }
.page-about .about-btn--ghost {
  background: transparent;
  border-color: var(--ink-2);
  color: var(--moon);
}
.page-about .about-btn--ghost:hover { border-color: var(--cyan); }
.page-about .cta-note {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--dust);
}

/* 焦点环 */
.page-about a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  border-radius: 4px;
}

/* 平板与桌面 */
@media (min-width: 640px) {
  .page-about .about-stats { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .page-about .badge-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .page-about .era {
    grid-template-columns: 88px minmax(0, 1fr);
    gap: 14px;
    align-items: start;
  }
}

@media (min-width: 760px) {
  .page-about .card-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.72fr);
    align-items: start;
    gap: 22px;
  }
  .page-about .card-split--reverse {
    grid-template-columns: minmax(0, 0.72fr) minmax(0, 1fr);
  }
}

@media (min-width: 900px) {
  .page-about .about-wrap {
    padding: 40px 40px 96px;
    gap: 30px;
  }
  .page-about .about-frame { gap: 28px; }
  .page-about .about-card { padding: 26px 28px; }
}

@media (min-width: 960px) {
  .page-about .about-frame {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
    align-items: start;
  }
  .page-about .about-rail {
    position: sticky;
    top: 28px;
    align-self: start;
  }
  .page-about .rail-card { padding: 18px 16px 20px; }
  .page-about .rail-svg {
    display: block;
    position: absolute;
    right: 8px;
    top: 52px;
    width: 50px;
    height: calc(100% - 108px);
    opacity: 0.85;
    pointer-events: none;
  }
  .page-about .season-list {
    display: grid;
    gap: 4px;
    overflow: visible;
    padding-bottom: 0;
  }
  .page-about .season-list > li { flex: 0 0 auto; }
  .page-about .season-node {
    width: 100%;
    padding: 7px 9px;
  }
  .page-about .node-sub { margin-left: auto; }
}

@media (min-width: 1180px) {
  .page-about .about-top { gap: 16px; }
  .page-about .about-lede { font-size: 17px; }
}