.page-about {
  --about-hair: rgba(216, 201, 174, .2);
  padding-bottom: clamp(40px, 7vw, 88px);
}

.page-about .page-about__crumb {
  padding-top: clamp(14px, 2.4vw, 26px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-top: clamp(16px, 3vw, 34px);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(22px, 3.5vw, 46px);
  align-items: end;
}

.page-about .about-hero__title {
  margin: 12px 0 0;
  font-family: var(--font-sans);
  font-size: clamp(34px, 6.6vw, 70px);
  font-weight: 900;
  line-height: 1.04;
  letter-spacing: -.025em;
  color: var(--ivory);
}

.page-about .about-hero__lede {
  max-width: 48ch;
  margin: 18px 0 0;
  color: var(--mist);
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.78;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.page-about .about-hero__media {
  position: relative;
  margin: 0;
  border-radius: var(--radius-l);
  border: 1px solid var(--line);
  background: var(--teal);
  overflow: hidden;
  clip-path: polygon(0 5%, 100% 0, 100% 95%, 0 100%);
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1200 / 750;
  object-fit: cover;
  filter: saturate(.85) contrast(1.06);
}

.page-about .about-hero__stamp {
  position: absolute;
  left: 16px;
  bottom: 20px;
  padding: 5px 10px;
  border-radius: 4px;
  background: var(--lime);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  line-height: 1.4;
}

.page-about .about-hero__bar {
  margin-top: clamp(20px, 3vw, 34px);
}

/* ---------- 主体两栏 ---------- */
.page-about .about-body-section {
  padding-top: clamp(34px, 6vw, 76px);
}

.page-about .about-body {
  display: grid;
  gap: clamp(22px, 3.5vw, 46px);
}

.page-about .about-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 2px 8px;
  list-style: none;
  overflow-x: auto;
}

.page-about .about-rail__link {
  display: inline-block;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  text-decoration: none;
  white-space: nowrap;
  transition: color .2s var(--ease), background .2s var(--ease),
    border-color .2s var(--ease);
}

.page-about .about-rail__link:hover,
.page-about .about-rail__link:focus-visible {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--ink);
}

.page-about .about-block,
.page-about .about-cta {
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.page-about .about-block + .about-block,
.page-about .about-block + .about-cta {
  margin-top: clamp(34px, 5.5vw, 64px);
}

.page-about .about-block__head {
  position: relative;
}

.page-about .about-block__title {
  margin: 10px 0 0;
  max-width: 22ch;
  font-size: clamp(24px, 3.4vw, 36px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -.012em;
  color: var(--ivory);
}

.page-about .about-block__text {
  max-width: 64ch;
  margin: 16px 0 0;
  color: var(--mist);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
}

.page-about .about-rot {
  display: none;
}

/* ---------- 暖纸面板 ---------- */
.page-about .about-paper {
  position: relative;
  padding: clamp(22px, 3.6vw, 42px);
  border-radius: var(--radius-l);
  color: #16211B;
  background-image:
    repeating-linear-gradient(90deg, rgba(216, 201, 174, .55) 0 1px, transparent 1px 34px),
    repeating-linear-gradient(0deg, rgba(216, 201, 174, .4) 0 1px, transparent 1px 34px),
    linear-gradient(155deg, #F7F1E4, #EFE3CD);
  box-shadow: 0 24px 60px -40px rgba(0, 0, 0, .9);
}

.page-about .about-paper__eyebrow {
  color: #6D7C71;
}

.page-about .about-paper__title {
  margin: 10px 0 0;
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: -.012em;
  color: #14201A;
}

.page-about .about-paper__text {
  margin: 14px 0 0;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: #2B3A32;
}

/* ---------- 时间线 ---------- */
.page-about .tl {
  position: relative;
  margin-top: 24px;
  padding-left: 22px;
  display: grid;
  gap: 10px;
}

.page-about .tl::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 12px;
  bottom: 12px;
  width: 2px;
  background: linear-gradient(180deg, var(--lime), rgba(184, 255, 60, .16) 55%, var(--moss));
}

.page-about .tl-item {
  position: relative;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: linear-gradient(160deg, rgba(17, 22, 26, .92), rgba(7, 26, 20, .92));
  transition: border-color .22s var(--ease);
}

.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: -22px;
  top: 20px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 0 4px rgba(7, 26, 20, .95), 0 0 14px rgba(184, 255, 60, .55);
}

.page-about .tl-item[open] {
  border-color: rgba(184, 255, 60, .48);
}

.page-about .tl-item > summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
}

.page-about .tl-item > summary::-webkit-details-marker {
  display: none;
}

.page-about .tl-item > summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--lime);
}

.page-about .tl-item[open] > summary::after {
  content: "−";
}

.page-about .tl-item__year {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--lime);
}

.page-about .tl-item__label {
  font-size: clamp(15px, 2vw, 18px);
  font-weight: 700;
  line-height: 1.45;
  color: var(--ivory);
}

.page-about .tl-item__body {
  margin: 0;
  padding: 0 18px 18px;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.78;
}

/* ---------- 图片容器 ---------- */
.page-about .about-shot {
  margin: 22px 0 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  overflow: hidden;
  background: var(--teal);
}

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

.page-about .about-shot__cap {
  display: block;
  padding: 10px 14px 12px;
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  line-height: 1.6;
  background: rgba(7, 26, 20, .9);
}

/* ---------- 团队 ---------- */
.page-about .about-roles {
  display: grid;
  gap: 10px;
  margin-top: 20px;
}

.page-about .role-item__sum {
  gap: 12px;
}

.page-about .role-item__name {
  font-size: 15px;
  font-weight: 700;
  color: var(--ivory);
}

.page-about .role-item .tag {
  margin-left: 10px;
}

/* ---------- 联赛网格 ---------- */
.page-about .league-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .league-grid__item {
  padding: 14px 14px 16px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: linear-gradient(160deg, rgba(14, 44, 36, .92), rgba(7, 26, 20, .92));
  transition: border-color .22s var(--ease), transform .22s var(--ease);
}

.page-about .league-grid__item:hover,
.page-about .league-grid__item:focus-within {
  border-color: var(--lime);
  transform: translateY(-2px);
}

.page-about .league-grid__code {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--lime);
}

.page-about .league-grid__name {
  display: block;
  margin-top: 7px;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--ivory);
}

.page-about .league-grid__meta {
  display: block;
  margin-top: 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .04em;
  line-height: 1.5;
  color: var(--mist);
  opacity: .6;
  transition: opacity .22s var(--ease), color .22s var(--ease);
}

.page-about .league-grid__item:hover .league-grid__meta,
.page-about .league-grid__item:focus-within .league-grid__meta {
  opacity: 1;
  color: var(--orange);
}

/* ---------- 数据块 ---------- */
.page-about .facts {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  margin-top: 22px;
}

.page-about .fact {
  padding: 16px 16px 18px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(17, 22, 26, .82);
}

.page-about .fact__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1;
  color: var(--lime);
}

.page-about .fact__label {
  display: block;
  margin-top: 9px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--mist);
}

/* ---------- 服务范围 ---------- */
.page-about .about-cta {
  position: relative;
  padding: clamp(24px, 4vw, 46px);
  border: 1px solid rgba(184, 255, 60, .3);
  border-radius: var(--radius-l);
  background-image:
    radial-gradient(120% 140% at 100% 0%, rgba(184, 255, 60, .15), transparent 58%),
    linear-gradient(150deg, #0E2C24, #071A14 72%);
}

.page-about .about-cta__title {
  margin: 10px 0 0;
  max-width: 24ch;
  font-size: clamp(24px, 3.6vw, 38px);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -.012em;
  color: var(--ivory);
}

.page-about .about-cta__text {
  max-width: 62ch;
  margin: 16px 0 0;
  color: var(--mist);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
}

.page-about .about-cta__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 24px;
  padding-top: 22px;
  border-top: 1px solid rgba(184, 255, 60, .22);
}

.page-about .about-cta__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(20px, 3.2vw, 30px);
  line-height: 1;
  color: var(--lime);
}

.page-about .about-cta__lab {
  display: block;
  margin-top: 8px;
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--mist);
}

.page-about .about-cta__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-about .facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-about .about-rot {
    display: block;
    position: absolute;
    top: 4px;
    right: 0;
    writing-mode: vertical-rl;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: .24em;
    color: var(--moss);
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, .96fr);
  }

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

@media (min-width: 1000px) {
  .page-about .about-body {
    grid-template-columns: 178px minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-rail {
    position: sticky;
    top: calc(var(--header-h) + 22px);
  }

  .page-about .about-rail__list {
    flex-direction: column;
    gap: 2px;
    padding: 0;
    overflow: visible;
    counter-reset: rail;
  }

  .page-about .about-rail__list li {
    counter-increment: rail;
  }

  .page-about .about-rail__link {
    display: flex;
    gap: 10px;
    padding: 9px 10px 9px 14px;
    border: none;
    border-left: 2px solid rgba(46, 91, 74, .65);
    border-radius: 0;
    white-space: normal;
    transition: color .2s var(--ease), border-color .2s var(--ease);
  }

  .page-about .about-rail__link::before {
    content: "0" counter(rail);
    font-size: 11px;
    color: var(--moss);
  }

  .page-about .about-rail__link:hover,
  .page-about .about-rail__link:focus-visible {
    background: none;
    border-left-color: var(--lime);
    color: var(--lime);
  }

  .page-about .about-rail__link:hover::before,
  .page-about .about-rail__link:focus-visible::before {
    color: var(--lime);
  }

  .page-about .facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}
<<<END>>>