.page-about {
  --about-shadow: 6px 6px 0 rgba(31, 138, 76, 0.85);
  --about-shadow-sm: 4px 4px 0 rgba(31, 138, 76, 0.85);
  --about-line: rgba(169, 180, 192, 0.25);
  --about-text: #ccd6e0;
  background: var(--night);
  color: var(--paper);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 4px solid var(--ink);
  background:
    radial-gradient(circle at 14% -12%, rgba(53, 196, 111, 0.22), transparent 52%),
    radial-gradient(circle at 92% 6%, rgba(245, 184, 65, 0.16), transparent 46%),
    linear-gradient(180deg, var(--night-2) 0%, var(--night) 82%);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    90deg,
    rgba(244, 241, 232, 0.045) 0 1px,
    transparent 1px 76px
  );
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  padding-top: clamp(1rem, 3vw, 1.5rem);
  padding-bottom: clamp(2rem, 5vw, 3.5rem);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.5rem);
  margin-top: clamp(1.25rem, 3vw, 1.9rem);
}

.page-about .about-hero h1 {
  margin: 0.45rem 0 0;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(1.85rem, 5.6vw, 3.3rem);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--paper);
  overflow-wrap: break-word;
}

.page-about .about-hero .lede {
  margin: 1rem 0 0;
  max-width: 56ch;
  font-size: clamp(1rem, 1.6vw, 1.06rem);
  line-height: 1.85;
  color: var(--about-text);
}

.page-about .about-hero .actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.page-about .about-hero__stats {
  display: grid;
  gap: 0.65rem;
  align-content: start;
}

.page-about .about-stat {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  border: 3px solid var(--ink);
  box-shadow: var(--about-shadow-sm);
  background: linear-gradient(160deg, var(--night-2), var(--night));
  transition: border-color var(--ease), transform var(--ease);
}

.page-about .about-stat:nth-child(even) {
  background: linear-gradient(160deg, rgba(31, 138, 76, 0.22), var(--night));
}

.page-about .about-stat:hover {
  transform: translateX(3px);
  border-color: var(--pitch-bright);
}

.page-about .about-stat__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.35rem, 4vw, 1.85rem);
  color: var(--amber);
  line-height: 1;
}

.page-about .about-stat__label {
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--fog);
  text-align: right;
}

/* ---------- 档案夹布局 ---------- */
.page-about .about-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  padding-top: clamp(1.75rem, 5vw, 3rem);
  padding-bottom: clamp(2.5rem, 6vw, 4.5rem);
}

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

.page-about .about-index {
  border: 3px solid var(--ink);
  box-shadow: var(--about-shadow-sm);
  background: linear-gradient(170deg, var(--night-2), var(--night));
  padding: 1rem;
}

.page-about .about-index__title {
  margin: 0 0 0.8rem;
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--pitch-bright);
}

.page-about .about-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.2rem;
  counter-reset: about-ix;
}

.page-about .about-index__link {
  display: grid;
  grid-template-columns: 1.7rem minmax(0, 1fr);
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.45rem 0.4rem;
  border-left: 3px solid transparent;
  color: var(--fog);
  font-size: 0.9rem;
  text-decoration: none;
  transition: color var(--ease), border-color var(--ease), background var(--ease);
}

.page-about .about-index__link::before {
  counter-increment: about-ix;
  content: counter(about-ix, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--pitch);
}

.page-about .about-index__link:hover,
.page-about .about-index__link:focus-visible,
.page-about .about-index__link[aria-current="true"] {
  color: var(--paper);
  border-left-color: var(--amber);
  background: rgba(53, 196, 111, 0.12);
}

/* ---------- 章节 ---------- */
.page-about .about-section {
  padding: clamp(1.5rem, 4vw, 2.25rem) 0;
  border-top: 2px solid var(--about-line);
  scroll-margin-top: 8rem;
}

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

.page-about .about-kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--amber);
}

.page-about .about-h2 {
  margin: 0.4rem 0 0;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(1.4rem, 3.6vw, 2.1rem);
  line-height: 1.22;
  letter-spacing: -0.015em;
  color: var(--paper);
}

.page-about .about-lead {
  margin: 0.9rem 0 0;
  max-width: 62ch;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--about-text);
}

.page-about .about-prose {
  margin-top: 1rem;
  max-width: 66ch;
}

.page-about .about-prose p {
  margin: 0 0 0.9rem;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--about-text);
}

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

.page-about .about-note {
  margin: 1.1rem 0 0;
  padding: 0.85rem 1rem;
  border-left: 4px solid var(--pitch);
  background: rgba(31, 138, 76, 0.12);
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--about-text);
}

/* ---------- 图片 ---------- */
.page-about .about-figure {
  margin: 1.5rem 0 0;
}

.page-about .about-figure__frame {
  overflow: hidden;
  border: 3px solid var(--ink);
  box-shadow: var(--about-shadow);
  background: var(--night-2);
  line-height: 0;
}

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

.page-about .about-figure figcaption {
  margin-top: 0.6rem;
  font-size: 0.78rem;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--fog);
}

/* ---------- 流程条 ---------- */
.page-about .about-flow {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.8rem;
}

.page-about .about-flow__step {
  position: relative;
  padding: 1rem 1rem 1rem 3.6rem;
  border: 3px solid var(--about-line);
  background: linear-gradient(165deg, var(--night-2), var(--night));
  transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
}

.page-about .about-flow__step:hover {
  transform: translate(-2px, -2px);
  border-color: var(--pitch-bright);
  box-shadow: var(--about-shadow-sm);
}

.page-about .about-flow__no {
  position: absolute;
  left: 0.9rem;
  top: 0.95rem;
  display: grid;
  place-items: center;
  width: 1.9rem;
  height: 1.9rem;
  border: 2px solid var(--ink);
  background: var(--amber);
  color: var(--night);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
}

.page-about .about-flow__step h3 {
  margin: 0 0 0.35rem;
  font-family: var(--font-heading);
  font-size: 1.02rem;
  font-weight: 800;
  color: var(--paper);
}

.page-about .about-flow__step p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--about-text);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
  margin-top: 1.5rem;
}

.page-about .about-team__card {
  padding: 1.1rem 1.15rem;
  border: 3px solid var(--about-line);
  border-left-width: 6px;
  background: linear-gradient(170deg, var(--night-2), var(--night));
  transition: transform var(--ease), border-color var(--ease);
}

.page-about .about-team__card:hover,
.page-about .about-team__card:focus-within {
  transform: translateY(-4px);
  border-color: var(--pitch-bright);
  border-left-color: var(--amber);
}

.page-about .about-team__role {
  margin: 0;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--pitch-bright);
}

.page-about .about-team__card h3 {
  margin: 0.45rem 0 0.5rem;
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 800;
  line-height: 1.4;
  color: var(--paper);
}

.page-about .about-team__card p:last-child {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--about-text);
}

/* ---------- 覆盖范围 ---------- */
.page-about .about-sports {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.25rem 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-sports li {
  padding: 0.35rem 0.75rem;
  border: 2px solid var(--pitch);
  background: rgba(31, 138, 76, 0.16);
  color: var(--paper);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
}

/* ---------- 时间线 ---------- */
.page-about .about-scale {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 1.4rem 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-scale a {
  display: inline-block;
  padding: 0.3rem 0.6rem;
  border: 2px solid var(--amber);
  color: var(--amber);
  font-family: var(--font-mono);
  font-size: 0.84rem;
  text-decoration: none;
  transition: background var(--ease), color var(--ease);
}

.page-about .about-scale a:hover,
.page-about .about-scale a:focus-visible {
  background: var(--amber);
  color: var(--night);
}

.page-about .about-timeline {
  list-style: none;
  margin: 1.4rem 0 0;
  padding: 0 0 0 1.5rem;
  border-left: 3px solid var(--pitch);
  display: grid;
  gap: 1.4rem;
}

.page-about .about-timeline__item {
  position: relative;
  scroll-margin-top: 8.5rem;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -2.1rem;
  top: 0.35rem;
  width: 0.8rem;
  height: 0.8rem;
  background: var(--amber);
  border: 3px solid var(--night);
}

.page-about .about-timeline__year {
  display: block;
  margin-bottom: 0.3rem;
  font-family: var(--font-mono);
  font-size: 1rem;
  letter-spacing: 0.04em;
  color: var(--amber);
}

.page-about .about-timeline__item h3 {
  margin: 0 0 0.35rem;
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--paper);
}

.page-about .about-timeline__item p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--about-text);
}

/* ---------- 收尾行动 ---------- */
.page-about .about-cta {
  margin-top: 2rem;
  padding: clamp(1.25rem, 4vw, 2rem);
  border: 3px solid var(--pitch-bright);
  box-shadow: var(--about-shadow);
  background:
    radial-gradient(circle at 100% 0%, rgba(245, 184, 65, 0.18), transparent 55%),
    var(--night-2);
}

.page-about .about-cta h3 {
  margin: 0;
  font-family: var(--font-heading);
  font-size: clamp(1.2rem, 3vw, 1.5rem);
  font-weight: 900;
  color: var(--paper);
}

.page-about .about-cta p {
  margin: 0.6rem 0 0;
  max-width: 56ch;
  font-size: 0.96rem;
  line-height: 1.8;
  color: var(--about-text);
}

.page-about .about-cta .actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.2rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .about-figure {
    margin-top: 1.75rem;
  }

  .page-about .about-flow {
    gap: 0.9rem;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(272px, 0.7fr);
    align-items: start;
  }

  .page-about .about-stat:nth-child(2) {
    transform: translateX(10px);
  }

  .page-about .about-stat:nth-child(4) {
    transform: translateX(10px);
  }

  .page-about .about-layout {
    grid-template-columns: 224px minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-index {
    position: sticky;
    top: 7.5rem;
  }

  .page-about .about-team {
    grid-template-columns: 1.3fr 1fr 0.9fr;
    align-items: start;
  }

  .page-about .about-team__card:nth-child(2) {
    margin-top: 1.4rem;
  }

  .page-about .about-team__card:nth-child(3) {
    margin-top: 2.8rem;
  }

  .page-about .about-flow__step {
    padding-right: 1.5rem;
  }
}

@media (min-width: 1100px) {
  .page-about .about-hero__grid {
    gap: 3rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-stat,
  .page-about .about-stat:hover,
  .page-about .about-flow__step,
  .page-about .about-flow__step:hover,
  .page-about .about-team__card,
  .page-about .about-team__card:hover,
  .page-about .about-index__link,
  .page-about .about-scale a {
    transition: none;
    transform: none;
  }
}