.page-about {
  background: var(--cool-white);
  color: var(--graphite);
}

/* ================= 首屏 ================= */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 1.25rem 0 0;
  background:
    radial-gradient(115% 85% at 88% 2%, rgba(34, 224, 184, .22), transparent 58%),
    linear-gradient(158deg, var(--pitch-ink) 0%, var(--pitch-line) 62%, #08201A 100%);
  color: var(--cool-white);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: auto -14% -18% 36%;
  height: 280px;
  background: repeating-linear-gradient(112deg, rgba(34, 224, 184, .15) 0 2px, transparent 2px 20px);
  transform: skewY(-7deg);
  pointer-events: none;
}

.page-about .about-hero-inner {
  position: relative;
  z-index: 1;
  width: var(--shell);
  margin-inline: auto;
  padding: 1.25rem 0 2.25rem;
}

.page-about .about-crumbs {
  margin-bottom: 1.75rem;
  font-size: .8125rem;
}

.page-about .about-crumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .4rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-crumbs li {
  display: flex;
  align-items: center;
  color: var(--light-60);
}

.page-about .about-crumbs li + li::before {
  content: "/";
  margin-right: .4rem;
  color: rgba(243, 246, 244, .35);
}

.page-about .about-crumbs a {
  color: var(--neon-cyan);
  text-decoration: none;
}

.page-about .about-crumbs a:hover {
  text-decoration: underline;
}

.page-about .about-kicker {
  margin: 0 0 .85rem;
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--neon-cyan);
}

.page-about .about-title {
  margin: 0 0 1.15rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 8vw, 3.5rem);
  line-height: 1.08;
  letter-spacing: .01em;
  max-width: 17ch;
}

.page-about .about-title em {
  font-style: normal;
  color: var(--neon-cyan);
}

.page-about .about-lede {
  margin: 0;
  max-width: 62ch;
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--light-80);
}

.page-about .about-hero-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .9rem 1rem;
  margin-top: 2rem;
}

.page-about .about-stat {
  padding: .3rem 0 .3rem .8rem;
  border-left: 2px solid rgba(34, 224, 184, .55);
}

.page-about .about-stat-value {
  display: block;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 1.5rem;
  line-height: 1.1;
  color: var(--neon-cyan);
}

.page-about .about-stat-value.is-orange {
  color: var(--signal-orange);
}

.page-about .about-stat-label {
  display: block;
  margin-top: .3rem;
  font-size: .8125rem;
  line-height: 1.5;
  color: var(--light-60);
}

.page-about .about-hero-figure {
  position: relative;
  z-index: 1;
  width: var(--shell);
  margin: 0 auto;
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 34px), 0 100%);
}

.page-about .about-hero-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

/* ================= 纵向刻度轨道 ================= */
.page-about .about-flow {
  position: relative;
  width: var(--shell);
  margin-inline: auto;
  padding-block: .5rem 3rem;
}

.page-about .about-flow::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 0;
  bottom: 2.5rem;
  width: 2px;
  background: linear-gradient(180deg, rgba(34, 224, 184, .8), rgba(217, 226, 222, .95));
}

.page-about .about-block {
  position: relative;
  padding: 2.5rem 0 2.5rem 38px;
  border-top: 1px solid var(--mist-gray);
}

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

.page-about .about-block::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 3rem;
  width: 16px;
  height: 16px;
  box-sizing: border-box;
  border-radius: 50%;
  background: var(--cool-white);
  border: 2px solid var(--mist-gray);
  z-index: 1;
  transition: background-color .28s var(--ease), border-color .28s var(--ease), box-shadow .28s var(--ease);
}

.page-about .about-block.is-active::before {
  background: var(--neon-cyan);
  border-color: var(--neon-cyan);
  box-shadow: 0 0 0 6px rgba(34, 224, 184, .2);
}

/* ================= 章节标题 ================= */
.page-about .about-head {
  margin-bottom: 1.35rem;
}

.page-about .about-num {
  display: block;
  margin-bottom: .5rem;
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .18em;
  color: var(--signal-orange);
}

.page-about .about-label {
  display: block;
  margin-bottom: .45rem;
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--ink-50);
}

.page-about .about-h2 {
  margin: 0;
  max-width: 26ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.375rem, 5.4vw, 2rem);
  line-height: 1.22;
  letter-spacing: .01em;
  color: var(--pitch-ink);
}

/* ================= 正文与引用 ================= */
.page-about .about-prose p {
  margin: 0 0 1rem;
  max-width: 68ch;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--ink-70);
}

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

.page-about .about-prose a {
  color: var(--pitch-line);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(34, 224, 184, .8);
}

.page-about .about-prose a:hover {
  color: var(--neon-cyan);
}

.page-about .about-quote {
  margin: 1.6rem 0 0;
  padding: .3rem 0 .3rem 1.1rem;
  max-width: 50ch;
  border-left: 3px solid var(--neon-cyan);
  font-size: 1.0625rem;
  font-weight: 500;
  line-height: 1.7;
  color: var(--pitch-ink);
}

/* ================= 年龄段 ================= */
.page-about .age-layout {
  margin-top: 1.5rem;
  display: grid;
  gap: 1.5rem;
}

.page-about .about-age-figure {
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius-cut);
}

.page-about .about-age-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 420px;
  aspect-ratio: 3 / 4;
  object-fit: cover;
}

.page-about .figure-cap {
  margin-top: .7rem;
  font-size: .8125rem;
  line-height: 1.6;
  color: var(--ink-50);
}

.page-about .age-list {
  display: grid;
  gap: .55rem;
}

.page-about .age-item {
  border: 1px solid var(--mist-gray);
  border-radius: var(--radius-cut);
  background: #fff;
  overflow: hidden;
  transition: border-color .24s var(--ease), box-shadow .24s var(--ease);
}

.page-about .age-item.is-open {
  border-color: var(--neon-cyan);
  box-shadow: 0 16px 32px -26px rgba(11, 43, 35, .6);
}

.page-about .age-trigger {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .35rem .8rem;
  width: 100%;
  padding: .85rem .95rem;
  border: 0;
  background: transparent;
  font: inherit;
  text-align: left;
  color: inherit;
  cursor: pointer;
}

.page-about .age-code {
  min-width: 2.8rem;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: .9375rem;
  letter-spacing: .04em;
  color: var(--pitch-ink);
}

.page-about .age-item.is-open .age-code {
  color: var(--signal-orange);
}

.page-about .age-name {
  flex: 1 1 auto;
  min-width: 8rem;
  font-size: .9375rem;
  font-weight: 600;
  color: var(--graphite);
}

.page-about .age-meta {
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .08em;
  color: var(--ink-50);
}

.page-about .age-panel {
  max-width: 62ch;
  font-size: .9375rem;
  line-height: 1.78;
  color: var(--ink-70);
}

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

/* ================= 训练模块 ================= */
.page-about .module-wrap {
  margin-top: 1.75rem;
  display: grid;
  gap: 1.5rem;
  align-items: center;
}

.page-about .module-ring {
  position: relative;
  width: 168px;
  height: 168px;
  margin-inline: auto;
  border-radius: 50%;
  background: conic-gradient(
    var(--neon-cyan) 0 25%,
    var(--signal-orange) 25% 50%,
    var(--amber) 50% 75%,
    var(--pitch-line) 75% 100%
  );
  display: grid;
  place-items: center;
}

.page-about .module-ring::before {
  content: "";
  position: absolute;
  inset: 33px;
  border-radius: 50%;
  background: var(--cool-white);
}

.page-about .ring-core {
  position: relative;
  z-index: 1;
  text-align: center;
  font-family: var(--font-mono);
  color: var(--pitch-ink);
  line-height: 1.05;
}

.page-about .ring-core b {
  display: block;
  font-size: 2rem;
  font-weight: 700;
}

.page-about .ring-unit {
  display: block;
  margin-top: .2rem;
  font-size: .6875rem;
  letter-spacing: .12em;
  color: var(--ink-50);
}

.page-about .module-legend {
  display: grid;
  gap: .55rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .module-item {
  display: grid;
  gap: .2rem;
  padding: .7rem .85rem;
  border: 1px solid var(--mist-gray);
  border-radius: var(--radius-cut);
  background: #fff;
  transition: transform .24s var(--ease), border-color .24s var(--ease), box-shadow .24s var(--ease);
}

.page-about .module-item:hover {
  transform: translateX(4px);
  border-color: var(--neon-cyan);
  box-shadow: 0 14px 28px -22px rgba(11, 43, 35, .55);
}

.page-about .module-name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: .06em;
  color: var(--pitch-ink);
}

.page-about .module-desc {
  font-size: .875rem;
  line-height: 1.65;
  color: var(--ink-70);
}

/* ================= 教练与团队 ================= */
.page-about .about-cols {
  display: grid;
  gap: 1.5rem;
  align-items: start;
}

.page-about .about-coach-figure {
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius-cut);
}

.page-about .about-coach-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

/* ================= 赛季档案深色面板 ================= */
.page-about .about-panel {
  position: relative;
  margin-top: 1.4rem;
  padding: 1.6rem 1.15rem 1.5rem;
  border-radius: var(--radius-cut);
  background:
    radial-gradient(120% 120% at 90% 0%, rgba(34, 224, 184, .18), transparent 60%),
    linear-gradient(150deg, var(--pitch-ink) 0%, #0A2A22 100%);
  color: var(--cool-white);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), 0 100%);
}

.page-about .about-panel-lede {
  margin: 0 0 1.25rem;
  max-width: 58ch;
  font-size: .9375rem;
  line-height: 1.78;
  color: var(--light-80);
}

.page-about .record-grid {
  display: grid;
  gap: .55rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .record-item {
  padding: .7rem .85rem;
  border-left: 2px solid var(--neon-cyan);
  background: rgba(243, 246, 244, .06);
}

.page-about .record-name {
  display: block;
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .08em;
  color: var(--neon-cyan);
}

.page-about .record-desc {
  display: block;
  margin-top: .3rem;
  font-size: .9375rem;
  line-height: 1.65;
  color: var(--light-80);
}

.page-about .about-panel-note {
  margin: 1.35rem 0 0;
  max-width: 58ch;
  font-size: .875rem;
  line-height: 1.7;
  color: var(--light-60);
}

.page-about .about-panel-note a {
  color: var(--neon-cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ================= 时间线 ================= */
.page-about .timeline {
  position: relative;
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 1rem;
  bottom: 1.8rem;
  width: 1px;
  background: var(--mist-gray);
}

.page-about .timeline-node {
  position: relative;
  padding-left: 1.6rem;
  padding-bottom: .5rem;
}

.page-about .timeline-node::before {
  content: "";
  position: absolute;
  left: 0;
  top: .95rem;
  width: 9px;
  height: 9px;
  background: var(--mist-gray);
  transform: rotate(45deg);
  transition: background-color .24s var(--ease);
}

.page-about .timeline-node.is-open::before {
  background: var(--signal-orange);
}

.page-about .timeline-trigger {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .35rem .8rem;
  width: 100%;
  padding: .55rem 0;
  border: 0;
  background: transparent;
  font: inherit;
  text-align: left;
  color: inherit;
  cursor: pointer;
}

.page-about .timeline-year {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: .04em;
  color: var(--pitch-ink);
}

.page-about .timeline-node.is-open .timeline-year {
  color: var(--signal-orange);
}

.page-about .timeline-title {
  font-size: .9375rem;
  font-weight: 600;
  color: var(--graphite);
}

.page-about .timeline-panel {
  max-width: 58ch;
  padding-bottom: .3rem;
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--ink-70);
}

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

/* ================= 收尾按钮 ================= */
.page-about .about-cta {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  margin-top: 1.5rem;
}

/* ================= 渐显 ================= */
.page-about [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .42s var(--ease), transform .42s var(--ease);
}

.page-about [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ================= 平板与桌面 ================= */
@media (min-width: 720px) {
  .page-about .about-hero-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1.25rem;
  }

  .page-about .record-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: .7rem;
  }

  .page-about .module-wrap {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 2rem;
  }

  .page-about .module-ring {
    width: 190px;
    height: 190px;
  }

  .page-about .module-ring::before {
    inset: 38px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    padding-top: 1.75rem;
  }

  .page-about .about-hero-inner {
    padding: 1.75rem 0 3rem;
  }

  .page-about .about-title {
    max-width: 20ch;
  }

  .page-about .about-flow::before {
    left: 23px;
  }

  .page-about .about-block {
    padding: 3.5rem 0 3.5rem 92px;
  }

  .page-about .about-block::before {
    left: 16px;
    top: 4rem;
  }

  .page-about .age-layout {
    grid-template-columns: 5fr 7fr;
    gap: 2.5rem;
    align-items: start;
  }

  .page-about .about-cols {
    grid-template-columns: 7fr 5fr;
    gap: 2.5rem;
  }

  .page-about .about-panel {
    padding: 2.2rem 2rem 2rem;
  }

  .page-about .about-age-figure img {
    max-height: 520px;
  }
}

@media (min-width: 1100px) {
  .page-about .about-block {
    padding-left: 108px;
  }

  .page-about .about-flow::before {
    left: 27px;
  }

  .page-about .about-block::before {
    left: 20px;
  }

  .page-about .about-h2 {
    max-width: 30ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about [data-reveal],
  .page-about .module-item,
  .page-about .about-block::before {
    transition: none;
    transform: none;
    opacity: 1;
  }
}