.page-about {
  --about-line: rgba(212, 175, 55, 0.22);
  --about-line-strong: rgba(212, 175, 55, 0.5);
  --about-card: rgba(244, 238, 223, 0.05);
  --about-text-soft: rgba(244, 238, 223, 0.8);
  --about-text-mute: rgba(244, 238, 223, 0.66);
  background: var(--ink);
  color: var(--ivory);
}

.page-about img {
  max-width: 100%;
  height: auto;
  display: block;
}

.page-about .about-h2 {
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(25px, 3.6vw, 40px);
  line-height: 1.28;
  letter-spacing: -0.01em;
  margin: 0 0 14px;
  color: var(--ivory);
}

.page-about .about-sec-lead {
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--about-text-soft);
  max-width: 62ch;
  margin: 0 0 16px;
}

.page-about .about-body {
  font-size: 15px;
  line-height: 1.85;
  color: var(--about-text-soft);
  max-width: 62ch;
  margin: 0 0 16px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding-top: clamp(20px, 4vw, 40px);
  padding-bottom: clamp(38px, 6vw, 76px);
  background:
    radial-gradient(95% 75% at 12% 0%, rgba(20, 86, 63, 0.55), transparent 62%),
    linear-gradient(180deg, #0A0D0B 0%, #0B1714 56%, #0E2A22 100%);
  border-bottom: 1px solid var(--hairline-soft);
}

.page-about .about-hero .crumb {
  margin-bottom: clamp(22px, 4vw, 40px);
}

.page-about .hero-grid {
  display: grid;
  gap: clamp(26px, 4vw, 46px);
}

.page-about .hero-title {
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(36px, 7vw, 68px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 10px 0 18px;
  color: var(--ivory);
}

.page-about .hero-title__accent {
  display: block;
  color: var(--gold-lit);
}

.page-about .hero-lead {
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.85;
  color: var(--about-text-soft);
  max-width: 56ch;
  margin: 0;
}

.page-about .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .hero-idcard {
  position: relative;
  padding: clamp(18px, 2.6vw, 28px);
  border: 1px solid var(--gold);
  border-radius: 4px;
  background: linear-gradient(160deg, rgba(14, 42, 34, 0.94), rgba(10, 13, 11, 0.94));
  box-shadow: var(--shadow-plate);
}

.page-about .hero-idcard::before {
  content: "";
  position: absolute;
  inset: 6px;
  border: 1px dashed rgba(212, 175, 55, 0.28);
  border-radius: 2px;
  pointer-events: none;
}

.page-about .idcard-title {
  margin: 0;
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-about .idcard-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 18px;
  margin-top: 18px;
}

.page-about .idcard-item {
  border-top: 1px solid var(--about-line);
  padding-top: 10px;
}

.page-about .idcard-num {
  display: block;
  font-family: var(--mono);
  font-weight: 600;
  font-size: clamp(22px, 2.6vw, 30px);
  line-height: 1.1;
  color: var(--gold-lit);
}

.page-about .idcard-key {
  display: block;
  margin-top: 4px;
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--sage);
}

/* ---------- 品牌起点 ---------- */
.page-about .origin-grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
}

.page-about .origin-points {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 11px;
}

.page-about .origin-points li {
  position: relative;
  padding-left: 22px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--about-text-soft);
}

.page-about .origin-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  border: 1px solid var(--gold);
  background: radial-gradient(circle, var(--gold-lit) 0 3px, transparent 3.5px);
}

.page-about .origin-figure {
  margin: 0;
  border: 1px solid var(--hairline);
  border-radius: 3px;
  overflow: hidden;
  background: var(--felt-deep);
}

.page-about .origin-figure img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .origin-cap {
  padding: 12px 14px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--sage);
  border-top: 1px solid var(--hairline-soft);
  background: rgba(10, 13, 11, 0.7);
}

/* ---------- 版本时间线 ---------- */
.page-about .about-versions {
  background: linear-gradient(180deg, var(--felt-deep) 0%, #0B1F19 62%, var(--ink) 100%);
  border-top: 1px solid var(--hairline-soft);
}

.page-about .versions-head {
  margin-bottom: clamp(24px, 4vw, 40px);
}

.page-about .tl-layout {
  display: grid;
  gap: clamp(20px, 3vw, 40px);
}

.page-about .tl-rail__title {
  margin: 0 0 10px;
  font-family: var(--sans);
  font-size: 11.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-about .tl-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .tl-rail__item {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--sage);
  border: 1px solid var(--about-line);
  border-radius: 999px;
  padding: 5px 11px;
}

.page-about .tl-rail__item.is-now {
  color: var(--ink);
  background: var(--gold);
  border-color: var(--gold);
  font-weight: 600;
}

.page-about .tl {
  list-style: none;
  margin: 0;
  padding: 0 0 0 30px;
  position: relative;
}

.page-about .tl::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--gold) 0%, rgba(212, 175, 55, 0.35) 45%, rgba(212, 175, 55, 0.1) 100%);
}

.page-about .tl-item {
  position: relative;
  padding-bottom: 30px;
  outline: none;
}

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

.page-about .tl-marker {
  position: absolute;
  left: -30px;
  top: 2px;
  width: 19px;
  height: 19px;
  border-radius: 50%;
  border: 1px solid var(--gold);
  background: var(--felt-deep);
  box-shadow: inset 0 0 0 4px #0C1A16;
  transition: transform 220ms var(--ease), background 220ms var(--ease), box-shadow 220ms var(--ease);
}

.page-about .tl-item:hover .tl-marker,
.page-about .tl-item:focus-within .tl-marker,
.page-about .tl-item:focus .tl-marker {
  background: var(--gold);
  transform: scale(1.12);
  box-shadow: inset 0 0 0 4px #0C1A16, 0 0 0 4px rgba(212, 175, 55, 0.14);
}

.page-about .tl-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  margin: 0 0 6px;
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.07em;
  color: var(--gold);
}

.page-about .tl-phase {
  color: var(--sage);
  border-left: 1px solid var(--about-line);
  padding-left: 12px;
}

.page-about .tl-title {
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(19px, 2.2vw, 24px);
  line-height: 1.42;
  margin: 0 0 8px;
  color: var(--ivory);
}

.page-about .tl-desc {
  margin: 0;
  font-size: 14.8px;
  line-height: 1.82;
  color: var(--about-text-soft);
  max-width: 62ch;
}

.page-about .tl-more {
  margin: 10px 0 0;
  padding-left: 12px;
  border-left: 1px solid var(--about-line);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--sage);
  max-width: 62ch;
}

/* ---------- 团队 ---------- */
.page-about .team-head {
  display: grid;
  gap: 18px;
  margin-bottom: clamp(22px, 3.5vw, 34px);
}

.page-about .team-total {
  margin: 0;
  align-self: start;
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 14px 20px;
  border: 1px solid var(--about-line-strong);
  border-radius: 3px;
  background: linear-gradient(140deg, rgba(20, 86, 63, 0.55), rgba(10, 13, 11, 0.7));
}

.page-about .team-total__num {
  font-family: var(--mono);
  font-weight: 600;
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1;
  color: var(--gold-lit);
}

.page-about .team-total__key {
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--sage);
}

.page-about .team-figure {
  margin: 0 0 clamp(20px, 3vw, 30px);
  border: 1px solid var(--hairline);
  border-radius: 3px;
  overflow: hidden;
  background: var(--felt-deep);
}

.page-about .team-figure img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .team-cap {
  padding: 11px 14px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--sage);
  border-top: 1px solid var(--hairline-soft);
}

.page-about .team-grid {
  display: grid;
  gap: 14px;
}

.page-about .team-card {
  padding: 22px;
  border: 1px solid var(--about-line);
  border-radius: 3px;
  background: var(--about-card);
  transition: border-color 200ms var(--ease), transform 200ms var(--ease), background 200ms var(--ease);
}

.page-about .team-card:hover,
.page-about .team-card:focus-within {
  border-color: var(--gold);
  transform: translateY(-2px);
  background: rgba(244, 238, 223, 0.07);
}

.page-about .team-card__num {
  margin: 0 0 6px;
  font-family: var(--mono);
  font-weight: 600;
  font-size: 32px;
  line-height: 1;
  color: var(--gold-lit);
}

.page-about .team-card__name {
  margin: 0 0 10px;
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 700;
  color: var(--ivory);
}

.page-about .team-card__task {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--about-text-soft);
}

.page-about .team-card__scene {
  margin: 14px 0 0;
  padding-top: 11px;
  border-top: 1px dashed var(--about-line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--sage);
}

/* ---------- 赛事照片带 ---------- */
.page-about .match-band {
  position: relative;
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  overflow: hidden;
  background: var(--ink);
}

.page-about .match-band__img {
  display: block;
  width: 100%;
  height: clamp(250px, 44vw, 420px);
  object-fit: cover;
  opacity: 0.58;
}

.page-about .match-band__overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: flex-end;
  background: linear-gradient(180deg, rgba(10, 13, 11, 0.25) 0%, rgba(10, 13, 11, 0.9) 78%);
}

.page-about .match-band__overlay .wrap {
  width: 100%;
  padding-top: clamp(16px, 3vw, 30px);
  padding-bottom: clamp(16px, 3vw, 30px);
}

.page-about .match-band__label {
  margin: 0 0 8px;
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-about .match-band__title {
  margin: 0 0 8px;
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(22px, 3.4vw, 36px);
  line-height: 1.25;
  color: var(--ivory);
}

.page-about .match-band__note {
  margin: 0;
  max-width: 52ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--about-text-mute);
}

/* ---------- 合作 ---------- */
.page-about .coop-grid {
  display: grid;
  gap: 12px;
  margin-top: clamp(18px, 3vw, 28px);
}

.page-about .coop-badge {
  padding: 16px 18px;
  border: 1px solid var(--about-line);
  border-radius: 2px;
  background: linear-gradient(150deg, rgba(20, 86, 63, 0.34), rgba(10, 13, 11, 0.42));
  transition: border-color 200ms var(--ease), transform 200ms var(--ease), background 200ms var(--ease);
}

.page-about .coop-badge:hover,
.page-about .coop-badge:focus-within {
  border-color: var(--gold);
  transform: translateY(-2px);
  background: linear-gradient(150deg, rgba(20, 86, 63, 0.6), rgba(10, 13, 11, 0.5));
}

.page-about .coop-badge__name {
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.45;
  color: var(--ivory);
}

.page-about .coop-badge__num {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--gold-lit);
  border: 1px solid var(--about-line-strong);
  border-radius: 999px;
  padding: 1px 8px;
}

.page-about .coop-badge__kind {
  display: block;
  margin-top: 8px;
  font-size: 12.5px;
  letter-spacing: 0.04em;
  line-height: 1.6;
  color: var(--sage);
}

/* ---------- 覆盖与规模 ---------- */
.page-about .about-reach {
  background: linear-gradient(180deg, var(--ink) 0%, #0B1D18 40%, var(--felt-deep) 100%);
  border-top: 1px solid var(--hairline-soft);
}

.page-about .stat-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: clamp(18px, 3vw, 28px);
}

.page-about .stat-card {
  padding: 18px 16px;
  border: 1px solid var(--about-line);
  border-radius: 3px;
  background: rgba(14, 42, 34, 0.55);
  transition: border-color 200ms var(--ease), transform 200ms var(--ease);
}

.page-about .stat-card:hover,
.page-about .stat-card:focus-within {
  border-color: var(--gold);
  transform: translateY(-2px);
}

.page-about .stat-card__num {
  margin: 0;
  font-family: var(--mono);
  font-weight: 600;
  font-size: clamp(26px, 3.4vw, 40px);
  line-height: 1.05;
  color: var(--gold-lit);
}

.page-about .stat-card__num small {
  font-size: 0.48em;
  margin-left: 3px;
  color: var(--sage);
}

.page-about .stat-card__label {
  margin: 8px 0 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--ivory);
}

.page-about .stat-card__scene {
  margin: 8px 0 0;
  font-size: 12.8px;
  line-height: 1.68;
  color: var(--sage);
}

/* ---------- 原则与收尾 ---------- */
.page-about .principle-grid {
  display: grid;
  gap: 14px;
  margin-top: clamp(18px, 3vw, 28px);
}

.page-about .principle-card {
  position: relative;
  padding: 24px 22px;
  border: 1px solid var(--hairline);
  border-radius: 3px;
  background: rgba(244, 238, 223, 0.04);
  transition: border-color 200ms var(--ease), background 200ms var(--ease);
}

.page-about .principle-card::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), rgba(212, 175, 55, 0));
  opacity: 0.55;
  transition: opacity 200ms var(--ease);
}

.page-about .principle-card:hover,
.page-about .principle-card:focus-within {
  border-color: var(--gold);
  background: rgba(244, 238, 223, 0.06);
}

.page-about .principle-card:hover::after {
  opacity: 1;
}

.page-about .principle-card__idx {
  margin: 0;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--gold);
}

.page-about .principle-card__title {
  margin: 10px 0 8px;
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--ivory);
}

.page-about .principle-card__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--about-text-soft);
}

.page-about .about-cta {
  margin-top: clamp(28px, 5vw, 52px);
  padding: clamp(22px, 4vw, 40px);
  border: 1px solid var(--gold);
  border-radius: 4px;
  background: linear-gradient(135deg, rgba(212, 175, 55, 0.14), rgba(14, 42, 34, 0.78));
  display: grid;
  gap: 18px;
}

.page-about .cta-title {
  margin: 0 0 8px;
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.3;
  color: var(--ivory);
}

.page-about .cta-note {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--about-text-soft);
}

.page-about .cta-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

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

@media (min-width: 720px) {
  .page-about .team-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-about .origin-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
  }

  .page-about .tl-layout {
    grid-template-columns: 176px minmax(0, 1fr);
    gap: 48px;
  }

  .page-about .tl-rail {
    position: sticky;
    top: 24px;
    align-self: start;
  }

  .page-about .tl-rail__list {
    flex-direction: column;
    align-items: flex-start;
  }

  .page-about .tl-rail__item {
    width: 100%;
    text-align: center;
  }

  .page-about .tl-more {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    margin-top: 0;
    border-left-color: transparent;
    transition: max-height 280ms var(--ease), opacity 220ms var(--ease), margin-top 280ms var(--ease), border-color 220ms var(--ease);
  }

  .page-about .tl-item:hover .tl-more,
  .page-about .tl-item:focus-within .tl-more {
    max-height: 160px;
    opacity: 1;
    margin-top: 10px;
    border-left-color: var(--about-line);
  }

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

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

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

@media (min-width: 980px) {
  .page-about .hero-grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.85fr);
    align-items: end;
  }
}

@media (min-width: 1080px) {
  .page-about .team-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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