.page-about {
  --about-rail: 200px;
  background: var(--bg);
  color: var(--text);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(1.4rem, 3vw, 2.4rem) clamp(2.4rem, 5vw, 4.4rem);
  background:
    radial-gradient(110% 80% at 88% -8%, rgba(47, 243, 208, .12), transparent 60%),
    radial-gradient(95% 70% at 4% 108%, rgba(242, 56, 71, .14), transparent 64%),
    linear-gradient(168deg, var(--bg) 0%, var(--deep) 68%, var(--bg) 100%);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(90deg, rgba(42, 74, 62, .55) 1px, transparent 1px),
    linear-gradient(0deg, rgba(42, 74, 62, .34) 1px, transparent 1px);
  background-size: 96px 96px, 96px 96px;
  opacity: .55;
  -webkit-mask-image: radial-gradient(88% 68% at 72% 0%, #000 0%, transparent 78%);
  mask-image: radial-gradient(88% 68% at 72% 0%, #000 0%, transparent 78%);
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(1.6rem, 3vw, 2.6rem);
}

.page-about .about-hero__copy h1 {
  max-width: 15em;
  margin-block: .35rem .9rem;
}

.page-about .about-hero .lede {
  color: var(--text-2);
  max-width: 60ch;
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-block: clamp(1.3rem, 2.6vw, 1.9rem);
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: .2rem;
  padding: .85rem .9rem 1rem;
  background: var(--card);
}

.page-about .about-stat__num {
  font-family: var(--font-mono);
  font-size: clamp(1.3rem, 3.2vw, 1.85rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--cyan);
}

.page-about .about-stat__label {
  font-size: .76rem;
  line-height: 1.4;
  letter-spacing: .03em;
  color: var(--text-2);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
}

.page-about .about-hero__media {
  position: relative;
  margin: 0;
  aspect-ratio: 3 / 4;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  overflow: hidden;
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  filter: contrast(1.08) saturate(.8) brightness(.86);
}

.page-about .about-hero__caption {
  position: absolute;
  inset: auto 0 0 0;
  padding: 1.8rem .9rem .8rem;
  font-size: .74rem;
  line-height: 1.5;
  color: var(--text);
  background: linear-gradient(0deg, rgba(7, 26, 20, .94), transparent);
}

/* ---------- 主体骨架 ---------- */
.page-about .about-layout {
  display: grid;
  gap: clamp(1.6rem, 3vw, 3rem);
  padding-block: clamp(2rem, 4vw, 3.4rem) clamp(2.6rem, 5vw, 4.2rem);
}

.page-about .about-layout > * {
  min-width: 0;
}

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

.page-about .about-toc {
  display: flex;
  gap: .4rem;
  overflow-x: auto;
  padding-bottom: .35rem;
  scrollbar-width: thin;
}

.page-about .about-toc__title {
  display: none;
  margin: 0;
}

.page-about .about-toc a {
  display: inline-flex;
  align-items: baseline;
  gap: .4rem;
  flex: 0 0 auto;
  padding: .42rem .62rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: .8rem;
  color: var(--text-2);
  text-decoration: none;
  white-space: nowrap;
  transition: color .18s var(--ease), border-color .18s var(--ease), background-color .18s var(--ease);
}

.page-about .about-toc a:hover,
.page-about .about-toc a:focus-visible {
  color: var(--text);
  border-color: var(--red);
}

.page-about .about-toc a.is-active {
  color: var(--text);
  border-color: var(--red);
  background: rgba(242, 56, 71, .14);
}

.page-about .about-toc__num {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .08em;
  color: var(--cyan);
}

/* ---------- 正文区块 ---------- */
.page-about .about-body {
  display: grid;
  gap: clamp(2rem, 4vw, 3.2rem);
  min-width: 0;
}

.page-about .about-block {
  scroll-margin-top: 6.5rem;
}

.page-about .about-block__kicker {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  margin: 0 0 .55rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .16em;
  color: var(--text-2);
}

.page-about .about-block__kicker::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--red);
}

.page-about .about-body h2 {
  margin: 0;
  font-size: clamp(1.45rem, 3.4vw, 2.15rem);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -.01em;
  color: var(--text);
  text-wrap: balance;
  max-width: 22em;
}

.page-about .about-body p {
  margin-block: .8rem 0;
  max-width: 62ch;
  font-size: clamp(.94rem, 1.5vw, 1.02rem);
  line-height: 1.75;
  color: var(--text-2);
}

.page-about .about-body .about-block__lead {
  margin-top: .9rem;
  font-size: clamp(1rem, 1.7vw, 1.1rem);
  line-height: 1.65;
  color: var(--text);
}

.page-about .about-body a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 243, 208, .38);
}

.page-about .about-body a:hover,
.page-about .about-body a:focus-visible {
  border-bottom-color: var(--cyan);
}

/* ---------- 职能矩阵 ---------- */
.page-about .about-roles {
  display: grid;
  gap: .8rem;
  margin-top: 1.4rem;
}

.page-about .about-role {
  display: flex;
  flex-direction: column;
  gap: .4rem;
  padding: 1rem .95rem 1.15rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-top: 2px solid var(--red);
  border-radius: var(--radius);
}

.page-about .about-role:nth-child(2) {
  border-top-color: var(--amber);
}

.page-about .about-role:nth-child(3) {
  border-top-color: var(--cyan);
}

.page-about .about-role:nth-child(4) {
  border-top-color: var(--paper);
}

.page-about .about-role__idx {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .16em;
  color: var(--text-2);
}

.page-about .about-role__name {
  font-size: 1rem;
  font-weight: 800;
  color: var(--text);
}

.page-about .about-role__desc {
  margin: 0;
  max-width: none;
  font-size: .86rem;
  line-height: 1.65;
  color: var(--text-2);
}

/* ---------- 团队配图 ---------- */
.page-about .about-figure {
  margin: 1.5rem 0 0;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  filter: contrast(1.06) saturate(.85) brightness(.88);
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0 0 0 1.1rem;
  border-left: 1px solid var(--line);
}

.page-about .about-timeline__item {
  position: relative;
  padding-bottom: 1.2rem;
}

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

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -1.45rem;
  top: .48rem;
  width: 9px;
  height: 9px;
  background: var(--bg);
  border: 2px solid var(--red);
  border-radius: 50%;
  box-sizing: content-box;
}

.page-about .about-timeline__item:last-child::before {
  border-color: var(--cyan);
}

.page-about .about-timeline__year {
  display: block;
  font-family: var(--font-mono);
  font-size: .92rem;
  font-weight: 700;
  letter-spacing: .05em;
  color: var(--cyan);
}

.page-about .about-timeline__title {
  margin: .15rem 0 0;
  font-size: .98rem;
  font-weight: 800;
  color: var(--text);
}

.page-about .about-timeline__desc {
  margin: .25rem 0 0;
  max-width: 58ch;
  font-size: .89rem;
  line-height: 1.66;
  color: var(--text-2);
}

/* ---------- 球队资料档案卡 ---------- */
.page-about .about-record {
  display: grid;
  gap: 1.2rem;
  margin-top: 1.5rem;
  padding: clamp(1.1rem, 2.6vw, 1.7rem);
  background: var(--paper);
  border-radius: var(--radius);
  border: 1px solid rgba(7, 26, 20, .16);
}

.page-about .about-record__media {
  margin: 0;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  border-radius: var(--radius);
  background: rgba(12, 36, 28, .08);
}

.page-about .about-record__media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(.92) contrast(1.02);
}

.page-about .about-record__title {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 800;
  line-height: 1.3;
  color: var(--deep);
}

.page-about .about-record p {
  margin-block: .6rem 0;
  max-width: none;
  font-size: .9rem;
  line-height: 1.72;
  color: var(--line);
}

.page-about .about-record .about-record__stat {
  display: flex;
  align-items: baseline;
  gap: .5rem;
  margin-top: 1rem;
  padding-top: .8rem;
  border-top: 1px dashed rgba(12, 36, 28, .3);
  font-size: .84rem;
  color: var(--line);
}

.page-about .about-record__num {
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 4vw, 1.9rem);
  font-weight: 700;
  line-height: 1;
  color: var(--red-deep);
}

/* ---------- 合作与认可 ---------- */
.page-about .about-partners {
  display: grid;
  gap: 1px;
  margin-top: 1.4rem;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-partner {
  display: grid;
  gap: .3rem;
  padding: 1.05rem 1rem 1.15rem;
  background: var(--deep);
}

.page-about .about-partner__num {
  font-family: var(--font-mono);
  font-size: clamp(1.55rem, 4vw, 2rem);
  font-weight: 700;
  line-height: 1;
  color: var(--amber);
}

.page-about .about-partner__label {
  font-size: .9rem;
  font-weight: 700;
  color: var(--text);
}

.page-about .about-partner__desc {
  margin: 0;
  max-width: none;
  font-size: .83rem;
  line-height: 1.62;
  color: var(--text-2);
}

.page-about .about-award {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .7rem 1rem;
  margin-top: 1rem;
  padding: .95rem 1rem;
  border: 1px dashed var(--amber);
  border-radius: var(--radius);
  background: rgba(255, 182, 46, .07);
}

.page-about .about-award p {
  margin: 0;
  max-width: 46ch;
  font-size: .88rem;
  line-height: 1.6;
  color: var(--text);
}

/* ---------- 服务范围 ---------- */
.page-about .about-checklist {
  list-style: none;
  margin: 1.3rem 0 0;
  padding: 0;
  display: grid;
  gap: .6rem;
}

.page-about .about-checklist li {
  position: relative;
  padding-left: 1.55rem;
  font-size: .88rem;
  line-height: 1.6;
  color: var(--text-2);
}

.page-about .about-checklist li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: .42em;
  width: 10px;
  height: 6px;
  border-left: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(-45deg);
}

.page-about .about-service {
  display: grid;
  gap: 1px;
  margin-top: 1.4rem;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-service__item {
  display: grid;
  gap: .3rem;
  padding: .95rem 1rem 1.05rem;
  background: var(--card);
}

.page-about .about-service__label {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .14em;
  color: var(--text-2);
}

.page-about .about-service__value {
  font-size: .95rem;
  font-weight: 700;
  color: var(--text);
  overflow-wrap: anywhere;
}

.page-about .about-service__value a {
  font-weight: 700;
}

/* ---------- 收口 ---------- */
.page-about .about-cta {
  display: grid;
  gap: 1rem;
  padding: clamp(1.1rem, 2.6vw, 1.7rem);
  border: 1px solid var(--line);
  border-left: 3px solid var(--red);
  border-radius: var(--radius);
  background: linear-gradient(120deg, var(--deep), rgba(17, 49, 40, .9));
}

.page-about .about-cta p {
  margin: 0;
  max-width: 54ch;
  font-size: .94rem;
  line-height: 1.7;
  color: var(--text-2);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (min-width: 700px) {
  .page-about .about-record {
    grid-template-columns: minmax(0, 210px) minmax(0, 1fr);
    align-items: start;
    gap: 1.5rem;
  }

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

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

@media (min-width: 760px) {
  .page-about .about-roles {
    grid-template-columns: .85fr 1fr 1.1fr 1.2fr;
    align-items: stretch;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .72fr);
    align-items: end;
    gap: clamp(2rem, 4vw, 4rem);
  }

  .page-about .about-hero__media {
    aspect-ratio: auto;
    height: 100%;
    min-height: 380px;
    max-height: 520px;
  }
}

@media (min-width: 960px) {
  .page-about .about-layout {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-rail {
    position: sticky;
    top: 5.8rem;
  }

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

  .page-about .about-toc__title {
    display: block;
    margin-bottom: .6rem;
    font-family: var(--font-mono);
    font-size: .72rem;
    letter-spacing: .16em;
    color: var(--text-2);
  }

  .page-about .about-toc a {
    display: flex;
    width: 100%;
    padding: .5rem 0 .5rem .8rem;
    border: 0;
    border-left: 2px solid var(--line);
    border-radius: 0;
    background: none;
    font-size: .86rem;
    white-space: normal;
  }

  .page-about .about-toc a:hover,
  .page-about .about-toc a:focus-visible {
    border-left-color: var(--red);
    background: rgba(242, 56, 71, .08);
  }

  .page-about .about-toc a.is-active {
    border-left-color: var(--red);
    background: linear-gradient(90deg, rgba(242, 56, 71, .16), transparent);
  }

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

@media (min-width: 1100px) {
  .page-about .about-hero__copy h1 {
    max-width: 13em;
  }
}