.page-about {
  --about-hair: rgba(154, 166, 201, 0.18);
  --about-soft: rgba(123, 47, 190, 0.14);
  --about-glow: rgba(245, 197, 24, 0.28);
  display: block;
  color: var(--stardust);
}

/* ============ 首屏 ============ */
.page-about .about-hero {
  position: relative;
  padding: clamp(1.75rem, 5vw, 3.5rem) 0 clamp(2rem, 5vw, 4rem);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -18%;
  width: min(720px, 92vw);
  aspect-ratio: 1 / 1;
  background: radial-gradient(circle at 50% 50%, rgba(123, 47, 190, 0.36), transparent 64%);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  bottom: -40%;
  left: -22%;
  width: min(560px, 80vw);
  aspect-ratio: 1 / 1;
  background: radial-gradient(circle at 50% 50%, rgba(43, 217, 168, 0.16), transparent 66%);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero .shell {
  position: relative;
  z-index: 1;
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
  margin-top: clamp(1.5rem, 4vw, 2.5rem);
}

.page-about .about-hero__lead h1 {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.01em;
  font-size: clamp(2.1rem, 6vw, 3.9rem);
  line-height: 1.08;
  margin: 0.35rem 0 1.1rem;
  max-width: 16ch;
}

.page-about .about-hero__intro {
  font-size: clamp(1rem, 1.6vw, 1.125rem);
  line-height: 1.8;
  color: var(--nebula);
  max-width: 60ch;
  margin: 0;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: clamp(1.25rem, 3vw, 2rem);
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--about-hair);
  border: 1px solid var(--about-hair);
  border-radius: var(--radius-lg);
  overflow: hidden;
  align-content: start;
}

.page-about .about-fact {
  background: linear-gradient(160deg, var(--indigo), rgba(11, 16, 38, 0.92));
  padding: 1.15rem 1.1rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.page-about .about-fact__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.7rem, 3.4vw, 2.5rem);
  font-weight: 700;
  line-height: 1;
  color: var(--gold);
  letter-spacing: -0.02em;
}

.page-about .about-fact__unit {
  font-size: 0.5em;
  margin-left: 0.15em;
  color: var(--violet);
}

.page-about .about-fact__label {
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--nebula);
}

/* ============ 品牌源起 ============ */
.page-about .about-origin {
  position: relative;
}

.page-about .about-origin__head {
  max-width: 42rem;
  margin-bottom: clamp(1.5rem, 4vw, 2.5rem);
}

.page-about .about-origin__grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.5rem);
}

.page-about .about-origin__story p {
  font-size: 1rem;
  line-height: 1.85;
  color: var(--nebula);
  max-width: 62ch;
  margin: 0 0 1.1rem;
}

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

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

.page-about .idea-card {
  position: relative;
  padding: 1.4rem 1.35rem 1.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--about-hair);
  background:
    linear-gradient(150deg, rgba(245, 197, 24, 0.14), rgba(20, 27, 60, 0.9) 46%),
    var(--indigo);
  overflow: hidden;
  transition: transform 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
}

.page-about .idea-card::after {
  content: "";
  position: absolute;
  top: -40%;
  right: -22%;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(245, 197, 24, 0.24), transparent 68%);
  opacity: 0.7;
  transition: opacity 0.35s ease;
  pointer-events: none;
}

.page-about .idea-card--violet {
  background:
    linear-gradient(150deg, rgba(123, 47, 190, 0.28), rgba(20, 27, 60, 0.92) 50%),
    var(--indigo);
}

.page-about .idea-card--violet::after {
  background: radial-gradient(circle, rgba(123, 47, 190, 0.42), transparent 68%);
}

.page-about .idea-card:hover,
.page-about .idea-card:focus-within {
  transform: translateY(-4px);
  border-color: rgba(245, 197, 24, 0.5);
  box-shadow: 0 18px 40px -22px rgba(245, 197, 24, 0.55);
}

.page-about .idea-card:hover::after,
.page-about .idea-card:focus-within::after {
  opacity: 1;
}

.page-about .idea-card__num {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.22em;
  color: var(--gold);
  display: block;
  margin-bottom: 0.7rem;
}

.page-about .idea-card h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  margin: 0 0 0.6rem;
  color: var(--stardust);
}

.page-about .idea-card p {
  font-size: 0.94rem;
  line-height: 1.75;
  color: var(--nebula);
  margin: 0;
}

.page-about .idea-card__fact {
  margin-top: 1rem;
  padding-top: 0.85rem;
  border-top: 1px dashed rgba(154, 166, 201, 0.28);
  font-size: 0.82rem !important;
  color: var(--aurora) !important;
  letter-spacing: 0.01em;
}

/* ============ 赛季时间轴 ============ */
.page-about .about-timeline {
  position: relative;
  isolation: isolate;
  padding-top: clamp(2.5rem, 7vw, 5rem);
  padding-bottom: clamp(2.5rem, 7vw, 5rem);
}

.page-about .about-timeline__backdrop {
  position: absolute;
  inset: 0;
  margin: 0;
  z-index: -1;
  opacity: 0.3;
  pointer-events: none;
  overflow: hidden;
}

.page-about .about-timeline__backdrop img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  -webkit-mask-image: radial-gradient(ellipse at 50% 42%, #000 16%, transparent 76%);
  mask-image: radial-gradient(ellipse at 50% 42%, #000 16%, transparent 76%);
}

.page-about .tl {
  list-style: none;
  margin: clamp(1.5rem, 4vw, 2.5rem) 0 0;
  padding: 0;
  position: relative;
}

.page-about .tl::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 17px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, transparent, var(--orbit) 6%, var(--violet) 52%, var(--gold) 94%, transparent);
}

.page-about .tl-item {
  position: relative;
  padding-left: 52px;
  padding-bottom: 1.75rem;
}

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

.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 8px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 5px rgba(245, 197, 24, 0.14), 0 0 18px 2px rgba(245, 197, 24, 0.45);
}

.page-about .tl-item--current::before {
  background: var(--aurora);
  box-shadow: 0 0 0 5px rgba(43, 217, 168, 0.16), 0 0 22px 3px rgba(43, 217, 168, 0.5);
}

.page-about .tl-card {
  border: 1px solid var(--about-hair);
  border-radius: var(--radius-md);
  background: linear-gradient(165deg, rgba(20, 27, 60, 0.94), rgba(11, 16, 38, 0.82));
  padding: 1.15rem 1.2rem 1.25rem;
  transition: border-color 0.3s ease, transform 0.3s ease;
}

.page-about .tl-card:hover {
  border-color: rgba(123, 47, 190, 0.55);
  transform: translateY(-3px);
}

.page-about .tl-era {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: var(--gold);
  margin: 0 0 0.5rem;
}

.page-about .tl-item--current .tl-era {
  color: var(--aurora);
}

.page-about .tl-card h3 {
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 700;
  margin: 0 0 0.55rem;
  color: var(--stardust);
}

.page-about .tl-card p {
  font-size: 0.92rem;
  line-height: 1.78;
  color: var(--nebula);
  margin: 0 0 0.85rem;
}

.page-about .tl-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0;
  padding: 0;
}

.page-about .tl-tags li {
  font-size: 0.74rem;
  line-height: 1;
  padding: 0.42rem 0.68rem;
  border-radius: 999px;
  border: 1px solid rgba(37, 48, 92, 0.9);
  background: rgba(37, 48, 92, 0.42);
  color: var(--nebula);
  white-space: nowrap;
}

/* ============ 质量工序 ============ */
.page-about .about-quality__grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.5rem);
}

.page-about .about-quality__body .section-lead {
  margin-bottom: clamp(1.25rem, 3vw, 2rem);
}

.page-about .step-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
  counter-reset: step;
}

.page-about .step-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 1rem;
  padding: 1.15rem 1.2rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--about-hair);
  background: rgba(20, 27, 60, 0.62);
  transition: background 0.3s ease, border-color 0.3s ease;
}

.page-about .step-item:hover {
  background: rgba(20, 27, 60, 0.9);
  border-color: rgba(245, 197, 24, 0.38);
}

.page-about .step-num {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--gold);
  line-height: 1.2;
  min-width: 2ch;
}

.page-about .step-item h3 {
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 700;
  margin: 0 0 0.4rem;
  color: var(--stardust);
}

.page-about .step-item p {
  font-size: 0.9rem;
  line-height: 1.76;
  color: var(--nebula);
  margin: 0;
}

.page-about .about-quality__aside {
  display: grid;
  gap: 1rem;
  align-content: start;
}

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

.page-about .quality-note h3 {
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 700;
  margin: 0 0 0.8rem;
  color: var(--stardust);
}

.page-about .quality-facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.7rem;
}

.page-about .quality-facts li {
  font-size: 0.88rem;
  line-height: 1.65;
  color: var(--nebula);
  padding-left: 0.9rem;
  border-left: 2px solid rgba(43, 217, 168, 0.5);
}

.page-about .quality-facts .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--aurora);
  font-weight: 700;
  margin-right: 0.2rem;
}

/* ============ 团队 ============ */
.page-about .team-grid {
  display: grid;
  gap: 1rem;
}

.page-about .team-card {
  position: relative;
  padding: 1.3rem 1.25rem 1.4rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--about-hair);
  background: linear-gradient(180deg, rgba(37, 48, 92, 0.4), rgba(11, 16, 38, 0.85));
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.page-about .team-card:hover {
  transform: translateY(-4px);
  border-color: rgba(123, 47, 190, 0.5);
}

.page-about .team-card__tag {
  display: inline-block;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  padding: 0.34rem 0.6rem;
  border-radius: 6px;
  margin-bottom: 0.85rem;
  font-weight: 700;
}

.page-about .tag--gold {
  background: rgba(245, 197, 24, 0.16);
  color: var(--gold);
}

.page-about .tag--violet {
  background: rgba(123, 47, 190, 0.24);
  color: #c79bf0;
}

.page-about .tag--aurora {
  background: rgba(43, 217, 168, 0.16);
  color: var(--aurora);
}

.page-about .tag--comet {
  background: rgba(255, 122, 69, 0.16);
  color: var(--comet);
}

.page-about .team-card h3 {
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 700;
  margin: 0 0 0.5rem;
  color: var(--stardust);
}

.page-about .team-card p {
  font-size: 0.9rem;
  line-height: 1.76;
  color: var(--nebula);
  margin: 0;
}

/* ============ 合作生态 ============ */
.page-about .about-partners {
  position: relative;
}

.page-about .about-partners__grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.5rem);
}

.page-about .about-partners__body .section-lead {
  margin-bottom: clamp(1.25rem, 3vw, 2rem);
  max-width: 58ch;
}

.page-about .partner-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.9rem;
}

.page-about .partner-item {
  padding: 1.05rem 1.15rem;
  border-radius: var(--radius-md);
  border-left: 3px solid var(--violet);
  background: rgba(20, 27, 60, 0.66);
  transition: border-color 0.3s ease, background 0.3s ease;
}

.page-about .partner-item:hover {
  border-left-color: var(--gold);
  background: rgba(20, 27, 60, 0.94);
}

.page-about .partner-item h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  margin: 0 0 0.4rem;
  color: var(--stardust);
}

.page-about .partner-item p {
  font-size: 0.89rem;
  line-height: 1.74;
  color: var(--nebula);
  margin: 0;
}

.page-about .about-partners__aside {
  display: grid;
  gap: 1rem;
  align-content: start;
}

.page-about .partner-spotlight {
  border-radius: var(--radius-lg);
  background: linear-gradient(150deg, rgba(245, 197, 24, 0.12), rgba(20, 27, 60, 0.9) 48%);
  border: 1px solid var(--about-hair);
}

.page-about .partner-spotlight__label {
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--nebula);
  margin: 0 0 0.4rem;
}

.page-about .partner-spotlight__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  line-height: 1;
  color: var(--gold);
  margin: 0 0 0.6rem;
}

.page-about .partner-spotlight__desc {
  font-size: 0.87rem;
  line-height: 1.7;
  color: var(--nebula);
  margin: 0;
}

/* ============ 数据资产 ============ */
.page-about .about-filter {
  margin-bottom: clamp(1.25rem, 3vw, 1.75rem);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.page-about .about-filter .filter-btn {
  font-family: var(--font-body);
  font-size: 0.85rem;
  padding: 0.5rem 0.95rem;
  border-radius: 999px;
  border: 1px solid rgba(37, 48, 92, 0.95);
  background: rgba(20, 27, 60, 0.7);
  color: var(--nebula);
  cursor: pointer;
  transition: color 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}

.page-about .about-filter .filter-btn:hover {
  color: var(--stardust);
  border-color: rgba(245, 197, 24, 0.5);
}

.page-about .about-filter .filter-btn[aria-pressed="true"],
.page-about .about-filter .filter-btn.is-active {
  background: rgba(245, 197, 24, 0.16);
  border-color: var(--gold);
  color: var(--gold);
}

.page-about .assets-grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.5rem);
}

.page-about .asset-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--about-hair);
  border: 1px solid var(--about-hair);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.page-about .asset-row {
  display: grid;
  gap: 0.35rem;
  padding: 1.05rem 1.15rem;
  background: rgba(11, 16, 38, 0.94);
  transition: background 0.3s ease;
}

.page-about .asset-row:hover {
  background: rgba(20, 27, 60, 0.96);
}

.page-about .asset-row__name {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--stardust);
}

.page-about .asset-row__scope {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.04em;
  color: var(--gold);
}

.page-about .asset-row__desc {
  font-size: 0.87rem;
  line-height: 1.72;
  color: var(--nebula);
}

.page-about .assets-aside {
  display: grid;
  gap: 1rem;
  align-content: start;
}

.page-about .assets-aside .media-frame img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.page-about .assets-note h3 {
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 700;
  margin: 0 0 0.7rem;
  color: var(--stardust);
}

.page-about .assets-note p {
  font-size: 0.89rem;
  line-height: 1.78;
  color: var(--nebula);
  margin: 0 0 0.85rem;
}

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

/* ============ 结尾 ============ */
.page-about .cta-panel {
  display: grid;
  gap: 1.5rem;
  padding: clamp(1.5rem, 4vw, 2.75rem);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(245, 197, 24, 0.24);
  background:
    radial-gradient(circle at 88% 8%, rgba(123, 47, 190, 0.32), transparent 54%),
    linear-gradient(160deg, rgba(245, 197, 24, 0.1), rgba(20, 27, 60, 0.94) 52%);
}

.page-about .cta-panel__body .section-title {
  margin-bottom: 0.85rem;
}

.page-about .cta-panel__body p {
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--nebula);
  max-width: 58ch;
  margin: 0;
}

.page-about .cta-panel__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-content: start;
}

/* ============ 响应式 ============ */
@media (min-width: 720px) {
  .page-about .about-origin__cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-about .asset-row {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr) minmax(0, 2.4fr);
    align-items: baseline;
    gap: 1rem;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-quality__grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-partners__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    align-items: start;
  }

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

  .page-about .cta-panel {
    grid-template-columns: minmax(0, 1.6fr) auto;
    align-items: center;
  }

  /* 桌面端：左右交错时间轴 */
  .page-about .tl::before {
    left: 50%;
    transform: translateX(-1px);
  }

  .page-about .tl-item {
    width: 50%;
    padding-left: 0;
    padding-bottom: 2.5rem;
  }

  .page-about .tl-item:nth-child(odd) {
    padding-right: 3.25rem;
    text-align: right;
  }

  .page-about .tl-item:nth-child(odd) .tl-tags {
    justify-content: flex-end;
  }

  .page-about .tl-item:nth-child(even) {
    margin-left: 50%;
    padding-left: 3.25rem;
  }

  .page-about .tl-item::before {
    left: auto;
    right: -9px;
    top: 10px;
  }

  .page-about .tl-item:nth-child(even)::before {
    left: -9px;
    right: auto;
  }
}

@media (min-width: 1100px) {
  .page-about .team-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .idea-card,
  .page-about .tl-card,
  .page-about .team-card,
  .page-about .step-item,
  .page-about .partner-item,
  .page-about .about-filter .filter-btn {
    transition: none;
  }

  .page-about .idea-card:hover,
  .page-about .tl-card:hover,
  .page-about .team-card:hover {
    transform: none;
  }
}
<<<PAGE_CSS_END>>>