.page-about {
  --about-block: clamp(56px, 8vw, 104px);
  --about-gutter: clamp(20px, 5vw, 32px);
  background: var(--night);
  color: var(--paper);
}

.page-about .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
}

/* ---------- 封面 ---------- */
.page-about .about-cover {
  position: relative;
  padding: clamp(24px, 4vw, 40px) 0 clamp(40px, 6vw, 72px);
  overflow: hidden;
}

.page-about .about-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(90% 70% at 88% 2%, rgba(79, 227, 208, 0.14), transparent 62%),
    radial-gradient(70% 60% at 4% 100%, rgba(255, 138, 61, 0.1), transparent 60%);
  pointer-events: none;
  z-index: 0;
}

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

.page-about .about-cover__kicker {
  margin-top: clamp(28px, 5vw, 56px);
  color: var(--cyan-mist);
}

.page-about .about-cover__title {
  margin: clamp(14px, 2.6vw, 26px) 0 0;
  max-width: 14em;
  font-size: clamp(40px, 8.4vw, 112px);
  font-weight: 200;
  line-height: 0.98;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-about .about-cover__lede {
  margin: clamp(20px, 3vw, 30px) 0 0;
  max-width: 62ch;
  font-size: 17px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-cover__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: clamp(32px, 5vw, 56px) 0 0;
  border-top: 1px solid var(--rule);
}

.page-about .stat {
  min-width: 0;
  padding: 18px 12px 0 0;
}

.page-about .stat + .stat {
  padding-left: 16px;
  border-left: 1px solid var(--rule);
}

.page-about .stat dt {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-about .stat dd {
  display: flex;
  align-items: baseline;
  gap: 5px;
  margin: 10px 0 0;
  color: var(--orange);
}

.page-about .stat dd .num {
  font-size: clamp(26px, 5.6vw, 46px);
  line-height: 1;
}

.page-about .stat__unit {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

/* ---------- 起点 ---------- */
.page-about .about-origin {
  padding: var(--about-block) 0 0;
}

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

.page-about .origin__text p {
  margin: 16px 0 0;
  max-width: 64ch;
  font-size: 17px;
  line-height: 1.8;
  color: var(--paper);
}

.page-about .origin__text p:first-of-type {
  margin-top: clamp(24px, 3vw, 34px);
}

.page-about .origin__note {
  align-self: start;
  padding: 22px 22px 24px;
  background: var(--stand);
  border-left: 2px solid var(--cyan);
  border-radius: 4px 24px 24px 24px;
}

.page-about .origin__note p:last-child {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--paper);
}

/* ---------- 全宽图 ---------- */
.page-about .about-break {
  margin: clamp(56px, 9vw, 130px) 0 clamp(52px, 7vw, 96px);
}

.page-about .about-break__frame {
  aspect-ratio: auto;
  height: auto;
  border-radius: 0;
}

.page-about .about-break__frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .about-break__caption {
  margin-top: 18px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 赛季时间轴 ---------- */
.page-about .about-axis {
  padding: 0 0 var(--about-block);
}

.page-about .axis {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  margin-top: clamp(30px, 4.5vw, 52px);
}

.page-about .axis__rail {
  border-top: 1px solid var(--rule);
  padding-top: 14px;
}

.page-about .axis__railhead {
  margin: 0 0 10px;
  color: var(--muted);
}

.page-about .axis__ticks {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 10px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-about .tick {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-about .tick__num {
  color: var(--cyan);
  font-size: 13px;
}

.page-about .tick:hover,
.page-about .tick:focus-visible {
  color: var(--paper);
  border-color: var(--cyan);
  background: rgba(79, 227, 208, 0.08);
}

.page-about .axis__body {
  display: flex;
  flex-direction: column;
}

.page-about .season {
  position: relative;
  padding: 0 0 clamp(34px, 4.6vw, 54px) clamp(18px, 3vw, 34px);
  border-left: 1px solid var(--rule);
}

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

.page-about .season::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 0.9em;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--night);
  border: 1px solid var(--rule);
  transition: background 0.24s var(--ease), border-color 0.24s var(--ease);
}

.page-about .season:hover::before,
.page-about .season:target::before {
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-about .season__mark {
  margin: 0;
  font-size: clamp(28px, 5vw, 52px);
  line-height: 1;
  letter-spacing: 0.06em;
  color: rgba(169, 243, 231, 0.26);
  transition: color 0.24s var(--ease);
}

.page-about .season:hover .season__mark,
.page-about .season:target .season__mark {
  color: rgba(169, 243, 231, 0.62);
}

.page-about .season__title {
  margin: 12px 0 0;
  font-size: clamp(21px, 3.1vw, 31px);
  font-weight: 300;
  line-height: 1.36;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-about .season__body {
  margin-top: 14px;
  max-width: 66ch;
}

.page-about .season__body > :first-child {
  margin-top: 0;
}

.page-about .season__body p {
  margin: 0;
  font-size: 17px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .season__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .season__facts li {
  padding: 5px 13px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan-mist);
}

/* ---------- 增长示意 ---------- */
.page-about .growth {
  margin: clamp(36px, 5vw, 64px) 0 0;
  padding: clamp(20px, 3.6vw, 34px);
  background: linear-gradient(150deg, var(--stand), var(--night) 82%);
  border-radius: 6px 30px 30px 30px;
}

.page-about .growth__cap {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-about .growth__svg {
  display: block;
  width: 100%;
  height: auto;
  margin-top: 16px;
}

.page-about .growth__grid line {
  stroke: var(--rule);
  stroke-width: 1;
}

.page-about .growth__line {
  fill: none;
  stroke: var(--cyan);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.page-about .growth__dots circle {
  fill: var(--night);
  stroke: var(--orange);
  stroke-width: 2.5;
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  padding: var(--about-block) 0;
  background: var(--stand);
}

.page-about .team {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
  margin-top: clamp(30px, 4.5vw, 50px);
}

.page-about .roles {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .role {
  padding: 16px 18px;
  border-radius: 16px;
  transition: background 0.24s var(--ease);
}

.page-about .role:hover {
  background: rgba(79, 227, 208, 0.07);
}

.page-about .role__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.page-about .role__name {
  font-size: 15px;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-about .role__count {
  font-size: 22px;
  line-height: 1;
  color: var(--paper);
  transition: color 0.24s var(--ease);
}

.page-about .role:hover .role__count {
  color: var(--orange);
}

.page-about .role__bar {
  margin-top: 10px;
  height: 6px;
  border-radius: 999px;
  background: rgba(30, 58, 85, 0.8);
  overflow: hidden;
}

.page-about .role__bar span {
  display: block;
  height: 100%;
  border-radius: 999px;
}

.page-about .role:nth-child(1) .role__bar span { width: 34.6%; background: #4FE3D0; }
.page-about .role:nth-child(2) .role__bar span { width: 23.1%; background: #3DBCAE; }
.page-about .role:nth-child(3) .role__bar span { width: 19.2%; background: #2F9A8F; }
.page-about .role:nth-child(4) .role__bar span { width: 15.4%; background: #267A73; }
.page-about .role:nth-child(5) .role__bar span { width: 7.7%;  background: #1E5A56; }

.page-about .role__note {
  margin: 0;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
  transition: max-height 0.3s var(--ease), opacity 0.3s var(--ease), margin 0.3s var(--ease);
}

.page-about .role:hover .role__note {
  max-height: 90px;
  opacity: 1;
  margin-top: 10px;
}

.page-about .team__figure {
  margin: 0;
}

.page-about .team__figure .image-frame {
  border-radius: 22px 22px 22px 6px;
  overflow: hidden;
}

.page-about .team__figure figcaption {
  margin-top: 14px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 核对机制 ---------- */
.page-about .about-check {
  padding: var(--about-block) 0;
}

.page-about .check__intro {
  margin: clamp(22px, 3vw, 32px) 0 0;
  max-width: 62ch;
  font-size: 17px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .checks {
  margin: clamp(26px, 4vw, 42px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .check {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 14px;
  padding: 22px 0;
}

.page-about .check + .check {
  border-top: 1px solid var(--rule);
}

.page-about .check:last-child {
  border-bottom: 1px solid var(--rule);
}

.page-about .check__idx {
  padding-top: 4px;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-about .check__body h3 {
  margin: 0;
  font-size: 18px;
  font-weight: 400;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-about .check__body p {
  margin: 8px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .checks__more {
  margin-top: 22px;
}

.page-about .checks__more .checks {
  margin-top: 10px;
}

.page-about .checks__summary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 20px;
  border: 1px solid var(--cyan);
  border-radius: 999px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--cyan);
  cursor: pointer;
  list-style: none;
  transition: background 0.24s var(--ease), color 0.24s var(--ease);
}

.page-about .checks__summary::-webkit-details-marker {
  display: none;
}

.page-about .checks__summary::before {
  content: "＋";
  font-size: 13px;
}

.page-about .checks__more[open] .checks__summary {
  background: rgba(79, 227, 208, 0.12);
}

.page-about .checks__more[open] .checks__summary::before {
  content: "－";
}

.page-about .checks__summary:hover,
.page-about .checks__summary:focus-visible {
  background: rgba(79, 227, 208, 0.16);
}

.page-about .check__fix {
  margin: 24px 0 0;
  padding: 18px 22px;
  border-left: 2px solid var(--orange);
  border-radius: 0 18px 18px 0;
  background: rgba(255, 138, 61, 0.07);
  font-size: 15px;
  line-height: 1.8;
  color: var(--paper);
}

/* ---------- 球场测绘 ---------- */
.page-about .about-survey {
  padding: var(--about-block) 0;
  background: var(--turf);
}

.page-about .survey {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
}

.page-about .survey__figure {
  order: 2;
  margin: 0;
}

.page-about .survey__frame {
  aspect-ratio: auto;
  height: auto;
  border-radius: 26px 26px 6px 26px;
  overflow: hidden;
}

.page-about .survey__frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .survey__figure figcaption {
  margin-top: 14px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.page-about .survey__text > p {
  margin: clamp(20px, 3vw, 28px) 0 0;
  max-width: 64ch;
  font-size: 17px;
  line-height: 1.8;
  color: var(--paper);
}

.page-about .survey__steps {
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: sstep;
}

.page-about .survey__steps li {
  position: relative;
  padding: 0 0 16px 36px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
  counter-increment: sstep;
}

.page-about .survey__steps li::before {
  content: counter(sstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-about .survey__foot {
  padding-top: 16px;
  border-top: 1px solid var(--rule);
  font-size: 15px;
  color: var(--cyan-mist);
}

/* ---------- 里程碑 ---------- */
.page-about .about-milestone {
  padding: var(--about-block) 0;
}

.page-about .ms__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  margin-top: clamp(30px, 4.5vw, 50px);
}

.page-about .ms {
  padding: 26px 24px 28px;
  background: rgba(14, 33, 56, 0.78);
  border-radius: 26px 26px 26px 6px;
}

.page-about .ms h3 {
  margin: 12px 0 0;
  font-size: clamp(19px, 2.4vw, 23px);
  font-weight: 300;
  line-height: 1.4;
  color: var(--paper);
}

.page-about .ms p {
  margin: 12px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 收尾 ---------- */
.page-about .about-next {
  padding: var(--about-block) 0 calc(var(--about-block) * 0.8);
  border-top: 1px solid var(--rule);
}

.page-about .next {
  display: grid;
  gap: 18px;
}

.page-about .next h2 {
  margin: 0;
  font-size: clamp(24px, 3.6vw, 38px);
  font-weight: 200;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-about .next p {
  margin: 0;
  max-width: 60ch;
  font-size: 17px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 6px;
}

/* ---------- 断点 ---------- */
@media (min-width: 760px) {
  .page-about .ms__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .ms--wide {
    grid-column: 1 / -1;
  }
}

@media (min-width: 960px) {
  .page-about .origin {
    grid-template-columns: minmax(0, 2.2fr) minmax(0, 1fr);
    gap: 56px;
  }

  .page-about .axis {
    grid-template-columns: minmax(150px, 0.8fr) minmax(0, 2.2fr);
    gap: 48px;
  }

  .page-about .axis__rail {
    position: sticky;
    top: calc(var(--header-h-compact) + 28px);
    align-self: start;
  }

  .page-about .axis__railhead {
    padding-left: 14px;
  }

  .page-about .axis__ticks {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-about .tick {
    position: relative;
    padding: 11px 0 11px 16px;
    border: 0;
    border-radius: 0;
    white-space: normal;
  }

  .page-about .tick::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 1px;
    background: var(--rule);
    transition: background 0.2s var(--ease);
  }

  .page-about .tick:hover,
  .page-about .tick:focus-visible {
    background: transparent;
    color: var(--paper);
  }

  .page-about .tick:hover::before,
  .page-about .tick:focus-visible::before {
    background: var(--cyan);
  }

  .page-about .team {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .survey {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.65fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .survey__figure {
    order: 0;
  }
}

@media (hover: none) {
  .page-about .role__note {
    max-height: none;
    opacity: 1;
    margin-top: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .tick,
  .page-about .season::before,
  .page-about .season__mark,
  .page-about .role,
  .page-about .role__count,
  .page-about .role__note,
  .page-about .checks__summary {
    transition: none;
  }
}