.page-about {
  --about-press: rgba(14, 43, 36, 0.78);
  --about-deep: #1B1636;
  color: var(--text);
  background: var(--ink);
  font-family: var(--font-body);
  overflow-x: clip;
}

.page-about .container {
  width: var(--measure);
  margin-inline: auto;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(1.5rem, 4vw, 2.5rem) 0 clamp(2.5rem, 6vw, 4.5rem);
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-hero__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.page-about .about-hero__bg img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  opacity: 0.42;
}

.page-about .about-hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, rgba(7, 26, 21, 0.97) 0%, rgba(7, 26, 21, 0.84) 44%, rgba(46, 35, 80, 0.74) 100%);
}

.page-about .about-hero__inner {
  display: grid;
  gap: clamp(1.25rem, 4vw, 2rem);
}

.page-about .about-index {
  display: flex;
  gap: 0.25rem;
  overflow-x: auto;
  padding-bottom: 0.4rem;
  scrollbar-width: thin;
}

.page-about .about-index__link {
  display: inline-flex;
  align-items: baseline;
  gap: 0.4rem;
  padding: 0.45rem 0.6rem;
  border: 1px solid transparent;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.page-about .about-index__link span {
  color: var(--cyan);
}

.page-about .about-index__link:hover,
.page-about .about-index__link:focus-visible {
  color: var(--cyan-soft);
  border-color: var(--line);
  background: var(--glass);
}

.page-about .about-hero__frame {
  position: relative;
  padding: clamp(1.25rem, 3.5vw, 2.75rem);
  border: 1px solid var(--line);
  background: linear-gradient(155deg, var(--about-press), rgba(7, 26, 21, 0.5));
}

.page-about .about-hero__frame::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.5rem;
  bottom: 1.5rem;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan), var(--amber));
}

.page-about .about-hero__frame::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 120px;
  height: 10px;
  background: repeating-linear-gradient(90deg, var(--line-strong) 0 1px, transparent 1px 12px);
  opacity: 0.7;
}

.page-about .about-hero__frame .display-title {
  margin: 0.75rem 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2rem, 6vw, 4.2rem);
  line-height: 1.05;
  letter-spacing: -0.015em;
  color: var(--text);
}

.page-about .about-hero__frame .lede {
  margin-top: 1.1rem;
  max-width: 40rem;
  color: var(--muted);
  font-size: clamp(0.98rem, 1.6vw, 1.1rem);
  line-height: 1.9;
}

.page-about .about-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.page-about .about-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  margin-top: 1.75rem;
  padding-top: 1rem;
  border-top: 1px dashed var(--line-soft);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--muted);
}

/* ---------- 区块骨架 ---------- */
.page-about .about-section {
  padding: clamp(2.5rem, 6vw, 5.5rem) 0;
}

.page-about .about-section + .about-section {
  border-top: 1px solid var(--line-soft);
}

.page-about .about-head {
  display: grid;
  gap: 0.6rem 1.75rem;
  margin-bottom: clamp(1.75rem, 4vw, 3rem);
  max-width: 62rem;
}

.page-about .about-head__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-about .about-h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.55rem, 3.6vw, 2.6rem);
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-about .about-lede {
  margin: 0.75rem 0 0;
  max-width: 44rem;
  color: var(--muted);
  font-size: 0.98rem;
  line-height: 1.9;
}

.page-about .about-prose p {
  margin: 0 0 1.1rem;
  max-width: 40rem;
  color: var(--muted);
  font-size: 0.98rem;
  line-height: 1.95;
}

.page-about .about-prose p:first-child {
  color: var(--text);
}

.page-about .about-prose__lead {
  margin: 0 0 1.75rem;
  max-width: 44rem;
  color: var(--muted);
  font-size: 0.98rem;
  line-height: 1.95;
}

/* ---------- 01 缘起 ---------- */
.page-about .origin-grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.75rem);
}

.page-about .about-spec {
  padding: clamp(1.1rem, 2.5vw, 1.6rem);
}

.page-about .about-spec__row {
  display: grid;
  gap: 0.25rem;
  padding: 0.8rem 0;
  border-bottom: 1px dashed var(--line-soft);
}

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

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

.page-about .about-spec__term {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-about .about-spec__value {
  font-size: 0.94rem;
  line-height: 1.7;
  color: var(--text);
}

/* ---------- 02 版本 ---------- */
.page-about .about-version {
  background: linear-gradient(180deg, var(--ink) 0%, var(--about-deep) 16%, var(--indigo) 52%, var(--about-deep) 86%, var(--ink) 100%);
}

.page-about .version-track {
  display: grid;
  gap: 1rem;
}

.page-about .version-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  padding: clamp(1.15rem, 2.5vw, 1.75rem);
  border: 1px solid rgba(168, 255, 240, 0.22);
  background: rgba(7, 26, 21, 0.6);
  transition: transform 0.25s ease, border-color 0.25s ease, background-color 0.25s ease;
}

.page-about .version-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: repeating-linear-gradient(90deg, rgba(53, 242, 208, 0.55) 0 1px, transparent 1px 10px);
}

.page-about .version-card:hover,
.page-about .version-card:focus-within,
.page-about .version-card:focus-visible {
  transform: translateY(-4px);
  border-color: var(--line-strong);
  background: rgba(14, 43, 36, 0.86);
}

.page-about .version-card--current {
  border-color: rgba(245, 184, 75, 0.62);
  box-shadow: 0 0 0 1px rgba(245, 184, 75, 0.16);
}

.page-about .version-card--current::before {
  background: repeating-linear-gradient(90deg, rgba(245, 184, 75, 0.75) 0 1px, transparent 1px 10px);
}

.page-about .version-card__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
}

.page-about .version-card__tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--amber);
}

.page-about .version-card__ver {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.7rem, 4vw, 2.3rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan-soft);
}

.page-about .version-card--current .version-card__ver {
  color: var(--amber);
}

.page-about .version-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.2rem;
  line-height: 1.4;
  color: var(--text);
}

.page-about .version-card__text {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.85;
}

.page-about .version-card__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.45rem;
  border-top: 1px dashed var(--line-soft);
  padding-top: 0.85rem;
}

.page-about .version-card__list li {
  position: relative;
  padding-left: 1.1rem;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.7;
}

.page-about .version-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 0.5rem;
  height: 1px;
  background: var(--cyan);
}

.page-about .version-badge {
  align-self: flex-start;
  margin-top: auto;
  padding: 0.25rem 0.6rem;
  border: 1px solid rgba(245, 184, 75, 0.55);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  color: var(--amber);
}

.page-about .version-figure {
  margin: clamp(1.5rem, 4vw, 2.75rem) 0 0;
}

.page-about .version-figure .media-frame__img,
.page-about .crew-figure .media-frame__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 03 团队 ---------- */
.page-about .crew-layout {
  display: grid;
  gap: clamp(1rem, 3vw, 2rem);
}

.page-about .crew-stat {
  padding: clamp(1.4rem, 3vw, 2rem);
  background: var(--paper);
  color: var(--ink-text);
}

.page-about .crew-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(3rem, 9vw, 4.6rem);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.03em;
}

.page-about .crew-stat__label {
  margin: 0.5rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: rgba(10, 29, 23, 0.7);
}

.page-about .crew-stat__text {
  margin: 1rem 0 0;
  font-size: 0.9rem;
  line-height: 1.85;
  color: rgba(10, 29, 23, 0.82);
}

.page-about .crew-list {
  border-top: 1px solid var(--line-soft);
}

.page-about .crew-item {
  display: grid;
  grid-template-columns: 2.5rem minmax(0, 1fr);
  gap: 0.3rem 0.9rem;
  padding: 1.05rem 0;
  border-bottom: 1px solid var(--line-soft);
  transition: background-color 0.2s ease;
}

.page-about .crew-item:hover {
  background: rgba(53, 242, 208, 0.05);
}

.page-about .crew-item__num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--cyan);
  padding-top: 0.2rem;
}

.page-about .crew-item__name {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  line-height: 1.4;
  color: var(--text);
}

.page-about .crew-item__desc {
  grid-column: 1 / -1;
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.85;
}

.page-about .crew-figure {
  margin: clamp(1.5rem, 4vw, 2.75rem) 0 0;
}

/* ---------- 04 赛事体系 ---------- */
.page-about .metric-strip {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.85rem;
  margin-bottom: clamp(1.5rem, 4vw, 2.5rem);
}

.page-about .metric {
  padding: 1.05rem 1.1rem;
  border-left: 2px solid var(--cyan);
  background: linear-gradient(90deg, rgba(53, 242, 208, 0.1), rgba(53, 242, 208, 0));
}

.page-about .metric__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.7rem, 4.5vw, 2.7rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan-soft);
}

.page-about .metric--amber {
  border-left-color: var(--amber);
  background: linear-gradient(90deg, rgba(245, 184, 75, 0.12), rgba(245, 184, 75, 0));
}

.page-about .metric--amber .metric__num {
  color: var(--amber);
}

.page-about .metric__label {
  margin: 0.55rem 0 0;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.6;
}

.page-about .cat-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.page-about .cat-tag {
  padding: 0.4rem 0.7rem;
  border: 1px solid var(--line);
  background: var(--glass);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--cyan-soft);
}

.page-about .cat-tag--more {
  border-color: rgba(245, 184, 75, 0.5);
  background: rgba(245, 184, 75, 0.08);
  color: var(--amber);
}

/* ---------- 05 数据流程 ---------- */
.page-about .source-scale {
  display: flex;
  gap: 5px;
  margin-bottom: clamp(1.5rem, 3vw, 2rem);
}

.page-about .source-scale span {
  flex: 1 1 0;
  height: 26px;
  background: linear-gradient(180deg, var(--cyan), rgba(53, 242, 208, 0.12));
  opacity: 0.5;
}

.page-about .source-scale span:nth-child(3n) {
  opacity: 0.85;
}

.page-about .gate-grid {
  display: grid;
  gap: 1rem;
}

.page-about .gate {
  position: relative;
  padding: 1.5rem 1.25rem 1.4rem;
  border: 1px solid var(--line-soft);
  background: rgba(14, 43, 36, 0.62);
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.page-about .gate:hover {
  transform: translateY(-3px);
  border-color: var(--line-strong);
}

.page-about .gate__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.9rem;
  line-height: 1;
  color: rgba(53, 242, 208, 0.34);
}

.page-about .gate__title {
  margin: 0.7rem 0 0.5rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text);
}

.page-about .gate__text {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.85;
}

.page-about .about-note {
  margin: clamp(1.5rem, 3vw, 2rem) 0 0;
  padding-top: 1.1rem;
  border-top: 1px dashed var(--line-soft);
  max-width: 46rem;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.85;
}

.page-about .about-footlink {
  color: var(--cyan-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 1px;
}

.page-about .about-footlink:hover,
.page-about .about-footlink:focus-visible {
  color: var(--amber);
  border-bottom-color: rgba(245, 184, 75, 0.7);
}

/* ---------- 06 下一步 ---------- */
.page-about .about-next {
  background: linear-gradient(180deg, rgba(7, 26, 21, 0) 0%, rgba(46, 35, 80, 0.4) 60%, rgba(7, 26, 21, 0) 100%);
}

.page-about .next-grid {
  display: grid;
  gap: 1rem;
}

.page-about .next-card {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1.5rem 1.3rem;
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(46, 35, 80, 0.66), rgba(7, 26, 21, 0.62));
  text-decoration: none;
  transition: transform 0.25s ease, border-color 0.25s ease, background-color 0.25s ease;
}

.page-about .next-card:hover,
.page-about .next-card:focus-visible {
  transform: translateY(-3px);
  border-color: var(--line-strong);
  background: linear-gradient(160deg, rgba(46, 35, 80, 0.86), rgba(14, 43, 36, 0.8));
}

.page-about .next-card__label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--amber);
}

.page-about .next-card__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--text);
}

.page-about .next-card__text {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.85;
}

.page-about .next-card__arrow {
  margin-top: auto;
  padding-top: 0.75rem;
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--cyan);
}

.page-about .about-close {
  margin: 1.75rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.85;
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px) {
  .page-about .metric-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 720px) {
  .page-about .about-head {
    grid-template-columns: 4.5rem minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-head__num {
    padding-top: 0.45rem;
  }

  .page-about .crew-item {
    grid-template-columns: 2.5rem 10rem minmax(0, 1fr);
    align-items: baseline;
  }

  .page-about .crew-item__desc {
    grid-column: 3;
  }

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

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

@media (min-width: 880px) {
  .page-about .about-hero__inner {
    grid-template-columns: 5.5rem minmax(0, 1fr);
    gap: clamp(1.5rem, 3vw, 3rem);
    align-items: start;
  }

  .page-about .about-index {
    flex-direction: column;
    overflow: visible;
    padding: 0 0 0 0.6rem;
    border-left: 1px solid var(--line);
  }

  .page-about .about-index__link {
    width: 100%;
    border-left: 0;
  }

  .page-about .version-track {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: stretch;
  }

  .page-about .origin-grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .crew-layout {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    align-items: start;
  }

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