.page-about {
  --about-index-w: 216px;
  --about-gap: clamp(20px, 4vw, 40px);
  background: var(--ink);
  color: var(--paper);
}

.page-about .crumb-sep {
  margin: 0 8px;
  color: var(--turf-mid);
}

.page-about img {
  max-width: 100%;
}

.page-about .figure-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: inherit;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  margin-top: clamp(12px, 2vw, 20px);
  padding: clamp(40px, 7vw, 88px) 0 clamp(34px, 5vw, 64px);
  background: var(--night);
  border-bottom: 8px solid var(--turf-deep);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -20%;
  right: -10%;
  width: min(660px, 78%);
  height: 150%;
  z-index: -1;
  background: linear-gradient(155deg, rgba(29, 83, 67, 0.85), rgba(4, 18, 14, 0) 72%);
  clip-path: polygon(36% 0, 100% 0, 100% 100%, 0 66%);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: repeating-linear-gradient(90deg, rgba(238, 245, 241, 0.028) 0 1px, transparent 1px 38px);
  pointer-events: none;
}

.page-about .about-hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
  align-items: end;
}

.page-about .about-hero-copy .t-page {
  margin: 12px 0 18px;
  max-width: 18em;
  letter-spacing: -0.02em;
  font-stretch: condensed;
}

.page-about .about-hero-copy .t-lead {
  max-width: 42em;
  color: var(--paper);
  opacity: 0.9;
}

.page-about .about-hero-mark {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-left: clamp(14px, 2vw, 24px);
  border-left: 3px solid var(--turf-mid);
}

.page-about .about-hero-num {
  font-family: var(--font-mono);
  font-size: clamp(3.4rem, 9vw, 7rem);
  font-weight: 700;
  line-height: 0.86;
  letter-spacing: -0.05em;
  color: var(--neon);
  font-variant-numeric: tabular-nums;
}

.page-about .about-hero-unit {
  font-size: 0.9375rem;
  line-height: 1.5;
  color: var(--muted);
  max-width: 12em;
}

/* ---------- 长卷骨架 ---------- */
.page-about .about-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap);
  align-items: start;
  padding-top: clamp(32px, 5vw, 72px);
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-about .about-body {
  min-width: 0;
}

/* ---------- 章节索引 ---------- */
.page-about .about-index {
  display: none;
}

.page-about .about-index-title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-about .about-index-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-index-link {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 10px 0;
  font-size: 0.875rem;
  line-height: 1.4;
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: color var(--d-fast) var(--ease), border-color var(--d-fast) var(--ease);
}

.page-about .about-index-link .num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--turf-mid);
  transition: color var(--d-fast) var(--ease);
}

.page-about .about-index-link:hover,
.page-about .about-index-link:focus-visible {
  color: var(--neon);
  border-bottom-color: var(--neon-a38);
}

.page-about .about-index-link:hover .num,
.page-about .about-index-link:focus-visible .num {
  color: var(--neon);
}

/* ---------- 章节 ---------- */
.page-about .about-section {
  padding: clamp(36px, 5.5vw, 72px) 0;
  scroll-margin-top: calc(var(--nav-drop) + 24px);
}

.page-about .about-section + .about-section {
  border-top: 8px solid var(--turf-deep);
}

.page-about .about-section .band {
  margin-bottom: clamp(18px, 2.6vw, 30px);
}

.page-about .about-section .t-section {
  margin: 0 0 14px;
  letter-spacing: -0.02em;
}

.page-about .about-lede {
  margin: 0 0 clamp(24px, 3.4vw, 40px);
  max-width: 38em;
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--paper);
  opacity: 0.86;
}

/* ---------- 团队构成 ---------- */
.page-about .about-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 40px);
}

.page-about .about-roster {
  display: grid;
  gap: 0;
}

.page-about .about-role {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px 22px;
  padding: clamp(18px, 2.6vw, 28px) 0;
  border-bottom: 1px solid var(--line);
}

.page-about .about-role-num {
  font-family: var(--font-mono);
  font-size: clamp(2.6rem, 6vw, 4.2rem);
  font-weight: 700;
  line-height: 0.92;
  letter-spacing: -0.05em;
  color: var(--neon);
  font-variant-numeric: tabular-nums;
}

.page-about .about-role-title {
  margin: 0 0 8px;
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--paper);
}

.page-about .about-role-body p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--muted);
}

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

.page-about .about-figure .figure-cap {
  margin-top: 10px;
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--muted);
}

.page-about .about-figure--wide,
.page-about .about-figure--full {
  margin-top: clamp(26px, 3.6vw, 44px);
}

/* ---------- 生产流程 ---------- */
.page-about .about-flow {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(14px, 2vw, 20px);
}

.page-about .about-step {
  position: relative;
  padding: clamp(18px, 2.4vw, 26px) clamp(16px, 2vw, 24px);
  background: var(--turf-deep);
  border-left: 3px solid var(--turf-mid);
  border-radius: var(--radius-sm);
  transition: border-color var(--d-fast) var(--ease), background-color var(--d-fast) var(--ease);
}

.page-about .about-step:hover,
.page-about .about-step:focus-within {
  border-left-color: var(--neon);
  background: #164033;
}

.page-about .about-step-num {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.14em;
  color: var(--data-yellow);
  font-variant-numeric: tabular-nums;
}

.page-about .about-step-title {
  margin: 0 0 8px;
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--paper);
}

.page-about .about-step-text {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--paper);
  opacity: 0.82;
}

.page-about .about-step-meta {
  margin: 12px 0 0;
  padding-top: 10px;
  border-top: 1px dashed var(--line-strong);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--neon-soft);
}

/* ---------- 赛季档案 ---------- */
.page-about .about-assets {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(14px, 2vw, 20px);
}

.page-about .about-asset {
  padding: clamp(16px, 2.2vw, 22px) clamp(16px, 2.2vw, 24px);
  background: linear-gradient(180deg, rgba(29, 83, 67, 0.55), rgba(18, 54, 43, 0.9));
  border-left: 3px solid var(--turf-mid);
  border-radius: var(--radius-sm);
  transition: border-color var(--d-fast) var(--ease);
}

.page-about .about-asset:hover {
  border-left-color: var(--data-yellow);
}

.page-about .about-asset-title {
  margin: 0 0 8px;
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--paper);
}

.page-about .about-asset p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--paper);
  opacity: 0.8;
}

/* ---------- 服务对象 ---------- */
.page-about .about-partners {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(14px, 2vw, 20px);
}

.page-about .about-partner {
  padding: clamp(18px, 2.4vw, 26px) clamp(16px, 2.2vw, 24px);
  background: var(--night);
  border-top: 2px solid var(--turf-mid);
  border-radius: 0 0 var(--radius) var(--radius);
  transition: border-color var(--d-fast) var(--ease), transform var(--d-fast) var(--ease);
}

.page-about .about-partner:hover {
  border-top-color: var(--neon);
  transform: translateY(-2px);
}

.page-about .about-partner .chip {
  display: inline-block;
  margin-bottom: 12px;
}

.page-about .about-partner-title {
  margin: 0 0 10px;
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--paper);
}

.page-about .about-partner p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 勘误 ---------- */
.page-about .about-correct {
  padding: clamp(18px, 2.6vw, 26px) clamp(16px, 2.4vw, 26px);
  border-radius: var(--radius);
  display: grid;
  gap: 12px;
}

.page-about .about-correct-line {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  align-items: baseline;
  font-size: 0.9375rem;
  line-height: 1.7;
}

.page-about .about-k {
  flex: 0 0 auto;
  min-width: 6em;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-about .about-v {
  color: var(--paper);
}

.page-about .about-quote {
  margin: clamp(20px, 3vw, 32px) 0 0;
  padding: 14px 18px;
  background: rgba(52, 227, 190, 0.06);
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--neon-soft);
}

/* ---------- 收束 ---------- */
.page-about .about-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-about .about-next-note {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.9;
  color: var(--muted);
}

.page-about .about-next-note .link-more {
  margin: 0 4px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .about-role {
    grid-template-columns: minmax(88px, 132px) minmax(0, 1fr);
    align-items: baseline;
  }
}

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

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

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

@media (min-width: 900px) {
  .page-about .about-hero-inner {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 0.7fr);
  }

  .page-about .about-split {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
  }
}

@media (min-width: 1024px) {
  .page-about .about-shell {
    grid-template-columns: var(--about-index-w) minmax(0, 1fr);
    gap: clamp(32px, 5vw, 72px);
  }

  .page-about .about-index {
    display: block;
    position: sticky;
    top: calc(var(--nav-drop) + 16px);
    padding-top: clamp(36px, 4vw, 64px);
  }

  .page-about .about-body {
    max-width: 62rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-partner,
  .page-about .about-step,
  .page-about .about-index-link,
  .page-about .about-asset {
    transition: none;
  }

  .page-about .about-partner:hover {
    transform: none;
  }
}