.page-about {
  display: block;
  padding-block: clamp(24px, 4.4vw, 56px) clamp(56px, 8vw, 116px);
  color: var(--flood);
}

.page-about .crumbs {
  margin-bottom: clamp(22px, 3.4vw, 42px);
}

/* ---------- 首屏 ---------- */
.page-about .ov-hero {
  position: relative;
  padding-bottom: clamp(38px, 6vw, 82px);
  border-bottom: 1px solid var(--line);
}

.page-about .ov-hero::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -1px;
  width: clamp(64px, 18vw, 220px);
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--mint));
}

.page-about .ov-hero__title {
  margin: 14px 0 0;
  max-width: 16ch;
  font-size: clamp(36px, 7.6vw, 92px);
  line-height: 1.04;
  letter-spacing: -0.03em;
  font-weight: 800;
}

.page-about .ov-hero__lede {
  margin: clamp(18px, 2.4vw, 28px) 0 0;
  max-width: 64ch;
  font-size: clamp(16px, 1.5vw, 19px);
  line-height: 1.75;
  color: var(--slate);
}

.page-about .ov-hero__keys {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(28px, 4vw, 46px) 0 0;
  padding: 1px;
  list-style: none;
  background: var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
}

.page-about .ov-hero__keys > li {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: clamp(16px, 2vw, 24px);
  background: var(--ink);
}

.page-about .ov-num {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: clamp(26px, 3.4vw, 40px);
  font-weight: 700;
  line-height: 1;
  color: var(--mint);
  letter-spacing: -0.02em;
}

.page-about .ov-k {
  font-size: 12.5px;
  letter-spacing: 0.14em;
  color: var(--slate);
}

.page-about .ov-hero__note {
  margin: clamp(20px, 2.6vw, 30px) 0 0;
  font-size: 14.5px;
  color: var(--slate);
}

.page-about .ov-hero__note a {
  color: var(--mint);
  text-decoration: none;
  border-bottom: 1px solid var(--mint-line);
  padding-bottom: 1px;
}

.page-about .ov-hero__note a:hover,
.page-about .ov-hero__note a:focus-visible {
  border-bottom-color: var(--mint);
}

/* ---------- 通用区块标题 ---------- */
.page-about .h-sec {
  margin: 0;
  font-size: clamp(24px, 3.4vw, 42px);
  line-height: 1.12;
  letter-spacing: -0.02em;
}

.page-about .ov-sec__intro {
  margin: 14px 0 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.75;
  color: var(--slate);
}

/* ---------- 时间轴 ---------- */
.page-about .ov-axis {
  margin-top: clamp(48px, 7vw, 104px);
}

.page-about .ov-axis__body {
  display: grid;
  gap: clamp(26px, 3.6vw, 44px);
  margin-top: clamp(28px, 4vw, 46px);
}

.page-about .ov-axis__fig {
  margin: 0;
  position: relative;
  border-radius: var(--r-xl);
  overflow: hidden;
  background: var(--ink);
}

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

.page-about .ov-axis__fig::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7, 12, 11, 0) 48%, rgba(7, 12, 11, 0.86) 100%);
  pointer-events: none;
}

.page-about .ov-axis__fig .frame__cap {
  position: absolute;
  left: clamp(16px, 2.4vw, 26px);
  right: clamp(16px, 2.4vw, 26px);
  bottom: clamp(14px, 2vw, 22px);
  z-index: 1;
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--flood);
}

.page-about .ov-axis__list {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .ov-tl {
  position: relative;
  display: grid;
  gap: 12px;
  padding-bottom: clamp(20px, 3vw, 32px);
}

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

.page-about .ov-tl__mark {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.page-about .ov-tl__yr {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: clamp(24px, 3.2vw, 40px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--flood);
}

.page-about .ov-tl__tag {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--mint);
}

.page-about .ov-tl__panel {
  border-left: 2px solid var(--turf-mid);
  border-radius: 0 var(--r-lg) var(--r-lg) 0;
}

.page-about .ov-tl__t {
  margin: 0;
  font-size: clamp(17px, 1.9vw, 22px);
  line-height: 1.35;
  letter-spacing: -0.01em;
}

.page-about .ov-tl__d {
  margin: 12px 0 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--slate);
}

/* ---------- 角色 ---------- */
.page-about .ov-roles {
  margin-top: clamp(52px, 8vw, 116px);
  padding-top: clamp(34px, 5vw, 62px);
  border-top: 1px solid var(--line);
}

.page-about .ov-roles__grid {
  display: grid;
  gap: clamp(18px, 2.4vw, 26px);
  margin-top: clamp(28px, 4vw, 46px);
}

.page-about .ov-role {
  position: relative;
  padding: clamp(22px, 3vw, 34px);
  background: linear-gradient(150deg, var(--ink) 0%, var(--ink) 58%, rgba(18, 61, 43, 0.5) 100%);
  border: 1px solid var(--line);
  border-radius: 6px var(--r-xl) var(--r-xl) var(--r-xl);
}

.page-about .ov-role__t {
  margin: 14px 0 0;
  font-size: clamp(18px, 2vw, 24px);
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.page-about .ov-role__list {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 11px;
}

.page-about .ov-role__list li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--slate);
}

.page-about .ov-role__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 9px;
  height: 2px;
  background: var(--mint);
}

/* ---------- 外援名额 ---------- */
.page-about .ov-quota {
  margin-top: clamp(52px, 8vw, 116px);
  padding: clamp(30px, 5vw, 70px) clamp(22px, 4vw, 56px);
  background: radial-gradient(120% 150% at 100% 0%, rgba(30, 107, 69, 0.32) 0%, rgba(7, 12, 11, 0) 58%), var(--ink);
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
}

.page-about .ov-quota__body {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  margin-top: clamp(24px, 3.4vw, 40px);
}

.page-about .ov-quota__lede {
  margin: 0;
  font-size: clamp(16px, 1.6vw, 19px);
  line-height: 1.8;
  color: var(--flood);
}

.page-about .ov-quota__copy p + p {
  margin: 16px 0 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--slate);
}

.page-about .ov-quota__seats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(74px, 1fr));
  gap: 8px;
  align-self: start;
}

.page-about .ov-quota__seat {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: clamp(14px, 2vw, 22px) 6px;
  background: rgba(7, 12, 11, 0.72);
  border: 1px solid var(--mint-line);
  border-radius: var(--r-md);
}

.page-about .ov-quota__seat b {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: clamp(20px, 2.6vw, 30px);
  font-weight: 700;
  line-height: 1;
  color: var(--mint);
}

.page-about .ov-quota__seat i {
  font-style: normal;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--slate);
}

.page-about .ov-quota__fig {
  margin: clamp(30px, 4.4vw, 56px) 0 0;
  position: relative;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--night);
}

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

.page-about .ov-quota__fig .frame__cap {
  display: block;
  margin-top: 12px;
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--slate);
}

/* ---------- 团队 ---------- */
.page-about .ov-team {
  margin-top: clamp(52px, 8vw, 116px);
  padding-top: clamp(34px, 5vw, 62px);
  border-top: 1px solid var(--line);
}

.page-about .ov-team__body {
  display: grid;
  gap: clamp(24px, 3.6vw, 44px);
  margin-top: clamp(26px, 4vw, 44px);
}

.page-about .ov-team__acc {
  display: grid;
  gap: 10px;
}

.page-about .ov-team__acc .acc {
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--panel-ink, var(--ink));
  padding: 4px clamp(14px, 2vw, 22px);
}

.page-about .ov-team__acc .acc[open] {
  border-color: var(--mint-line);
}

.page-about .ov-team__acc summary {
  cursor: pointer;
  padding: 14px 0;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--flood);
}

.page-about .ov-team__acc summary::marker {
  color: var(--mint);
}

.page-about .ov-team__acc p {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--slate);
}

.page-about .ov-team__fig {
  margin: 0;
  border-radius: var(--r-xl);
  overflow: hidden;
  background: var(--ink);
}

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

.page-about .ov-team__fig .frame__cap {
  display: block;
  padding: 12px clamp(14px, 2vw, 20px) 0;
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--slate);
}

.page-about .ov-partners {
  margin-top: clamp(24px, 3.4vw, 40px);
  padding: clamp(20px, 3vw, 30px) clamp(20px, 3.2vw, 34px);
  background: var(--turf-deep);
  border-radius: 4px var(--r-xl) var(--r-xl) var(--r-xl);
}

.page-about .ov-partners p + p {
  margin: 14px 0 0;
  max-width: 66ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(232, 243, 238, 0.86);
}

/* ---------- 专题与节奏 ---------- */
.page-about .ov-cycle {
  margin-top: clamp(52px, 8vw, 116px);
  padding-top: clamp(34px, 5vw, 62px);
  border-top: 1px solid var(--line);
}

.page-about .ov-cycle__grid {
  display: grid;
  gap: 1px;
  margin-top: clamp(26px, 4vw, 44px);
  padding: 1px;
  background: var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
}

.page-about .ov-cycle__card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(22px, 3vw, 34px);
  background: var(--ink);
}

.page-about .ov-cycle__n {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: clamp(38px, 5.4vw, 66px);
  font-weight: 700;
  line-height: 0.92;
  letter-spacing: -0.03em;
  color: var(--amber-card);
}

.page-about .ov-cycle__t {
  margin: 0;
  font-size: clamp(16px, 1.7vw, 20px);
  line-height: 1.35;
}

.page-about .ov-cycle__card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--slate);
}

.page-about .ov-cycle__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 3.4vw, 40px);
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-about .ov-hero__keys {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .ov-cycle__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-about .ov-roles__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .ov-roles__grid .ov-role:nth-child(2) {
    transform: translateY(clamp(14px, 2vw, 26px));
  }

  .page-about .ov-quota__body {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: center;
  }

  .page-about .ov-team__body {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-about .ov-axis__body {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.55fr);
    align-items: start;
    gap: clamp(34px, 4.4vw, 62px);
  }

  .page-about .ov-axis__fig {
    position: sticky;
    top: 120px;
  }

  .page-about .ov-axis__list {
    border-left: 1px solid var(--line-strong);
    padding-left: clamp(22px, 2.6vw, 34px);
  }

  .page-about .ov-tl {
    grid-template-columns: 150px minmax(0, 1fr);
    align-items: start;
    gap: clamp(18px, 2.2vw, 30px);
  }

  .page-about .ov-tl::before {
    content: "";
    position: absolute;
    left: calc(clamp(22px, 2.6vw, 34px) * -1 - 5px);
    top: 9px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--night);
    border: 2px solid var(--mint);
  }

  .page-about .ov-tl__mark {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ov-roles__grid .ov-role:nth-child(2) {
    transform: none;
  }
}

.page-about {
  --amber-card: currentColor;
  --panel-ink: transparent;
}