.page-about {
  --about-line: rgba(240, 185, 11, 0.28);
  --about-node: #F0B90B;
  --about-bg-deep: #0A1128;
  --about-bg-card: #101C3A;
  --about-border: #1F3A5F;
  --about-red: #B3242A;
  --about-text: #E5E7EB;
  --about-sub: #9CA3AF;
  --about-font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --about-font-mono: "JetBrains Mono", "Roboto Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  position: relative;
  color: var(--about-text);
}

.page-about .container {
  max-width: var(--content-max, 1200px);
  margin: 0 auto;
  padding: 0 20px;
}

.page-about .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 16px 0 0;
  font-family: var(--about-font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--about-sub);
}

.page-about .breadcrumb a {
  color: var(--about-sub);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 200ms ease, border-color 200ms ease;
}

.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus-visible {
  color: var(--about-node);
  border-color: var(--about-node);
}

.page-about .breadcrumb__sep {
  opacity: 0.5;
}

.page-about .breadcrumb [aria-current="page"] {
  color: var(--about-node);
}

.page-about .section-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 12px;
  font-family: var(--about-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--about-node);
}

.page-about .section-label::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--about-line);
}

.page-about .section-title {
  margin: 0 0 16px;
  font-family: var(--about-font-sans);
  font-weight: 900;
  font-size: 1.9rem;
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--about-text);
}

.page-about .about-hero {
  padding: 40px 0 20px;
}

.page-about .about-hero h1 {
  max-width: 760px;
  margin: 0 0 18px;
  font-family: var(--about-font-sans);
  font-weight: 900;
  font-size: 2.2rem;
  line-height: 1.16;
  letter-spacing: -0.02em;
}

.page-about .about-hero__lead {
  max-width: 680px;
  margin: 0 0 30px;
  font-family: var(--about-font-mono);
  font-weight: 300;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--about-sub);
}

.page-about .about-hero__grid {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.page-about .about-hero__text {
  flex: 1 1 56%;
  display: grid;
  gap: 16px;
  font-family: var(--about-font-mono);
  font-weight: 300;
  font-size: 0.88rem;
  line-height: 1.75;
  color: rgba(229, 231, 235, 0.92);
}

.page-about .about-hero__text p {
  margin: 0;
}

.page-about .about-hero__img {
  display: block;
  width: 100%;
  max-width: 600px;
  height: auto;
  border-radius: var(--radius, 10px);
  border: 1px solid var(--about-border);
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.28);
  object-fit: cover;
}

.page-about .about-story {
  margin-top: 64px;
  padding: 36px 0 24px;
  border-top: 1px solid var(--about-border);
}

.page-about .timeline {
  position: relative;
  margin: 28px 0 0;
  display: grid;
  gap: 18px;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--about-node) 0%, rgba(240, 185, 11, 0.14) 30%, rgba(240, 185, 11, 0.06) 70%, transparent 100%);
}

.page-about .timeline__item {
  position: relative;
  padding-left: 42px;
}

.page-about .timeline__node {
  position: relative;
  background: var(--about-bg-card);
  border: 1px solid var(--about-border);
  border-radius: var(--radius, 10px);
  padding: 16px 18px;
  transition: border-color 200ms ease, box-shadow 200ms ease, transform 200ms ease;
}

.page-about .timeline__node::before {
  content: "";
  position: absolute;
  left: -34px;
  top: 20px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--about-node);
  box-shadow: 0 0 0 3px rgba(240, 185, 11, 0.2), 0 0 0 6px rgba(240, 185, 11, 0.06);
}

.page-about .timeline__node:hover,
.page-about .timeline__node:focus,
.page-about .timeline__node:focus-visible {
  outline: none;
  border-color: rgba(240, 185, 11, 0.65);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3), 0 0 0 1px rgba(240, 185, 11, 0.32);
  transform: translateY(-2px);
}

.page-about .timeline__year {
  display: block;
  font-family: var(--about-font-sans);
  font-weight: 900;
  font-size: 1.3rem;
  color: var(--about-node);
  letter-spacing: 0.02em;
}

.page-about .timeline__bar {
  display: block;
  width: 36px;
  height: 2px;
  margin: 8px 0;
  background: linear-gradient(90deg, rgba(240, 185, 11, 0.75), rgba(240, 185, 11, 0));
}

.page-about .timeline__trigger {
  display: inline-block;
  font-family: var(--about-font-sans);
  font-weight: 700;
  font-size: 0.98rem;
  color: var(--about-text);
  border-bottom: 1px dashed rgba(240, 185, 11, 0.3);
  cursor: default;
}

.page-about .timeline__detail {
  display: none;
  margin-top: 10px;
  font-family: var(--about-font-mono);
  font-weight: 300;
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--about-sub);
}

.page-about .timeline__node:hover .timeline__detail,
.page-about .timeline__node:focus .timeline__detail,
.page-about .timeline__node:focus-visible .timeline__detail {
  display: block;
}

.page-about .about-story__note {
  margin: 28px 0 0;
  padding: 16px 18px;
  border-left: 3px solid var(--about-node);
  background: rgba(16, 28, 58, 0.65);
  border-radius: 0 var(--radius, 10px) var(--radius, 10px) 0;
  font-family: var(--about-font-mono);
  font-weight: 300;
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--about-sub);
}

.page-about .about-story__note a {
  color: var(--about-node);
  text-decoration: none;
  border-bottom: 1px solid rgba(240, 185, 11, 0.35);
}

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

.page-about .about-data {
  margin-top: 64px;
  padding: 36px 0 20px;
  border-top: 1px solid var(--about-border);
}

.page-about .about-data__subtitle {
  margin-bottom: 24px;
  font-family: var(--about-font-mono);
  font-size: 0.8rem;
  color: var(--about-sub);
}

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

.page-about .stat-card {
  background: linear-gradient(145deg, rgba(16, 28, 58, 0.92), rgba(10, 17, 40, 0.88));
  border: 1px solid var(--about-border);
  border-radius: var(--radius, 10px);
  padding: 18px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: border-color 200ms ease, box-shadow 200ms ease, transform 200ms ease;
}

.page-about .stat-card:hover,
.page-about .stat-card:focus,
.page-about .stat-card:focus-visible {
  outline: none;
  border-color: rgba(240, 185, 11, 0.68);
  box-shadow: 0 0 0 1px rgba(240, 185, 11, 0.25), 0 14px 30px rgba(0, 0, 0, 0.26);
  transform: translateY(-4px);
}

.page-about .stat-card--primary {
  border-color: rgba(240, 185, 11, 0.45);
}

.page-about .stat-card__num {
  font-family: var(--about-font-sans);
  font-weight: 900;
  font-size: 1.8rem;
  line-height: 1.1;
  color: var(--about-node);
  letter-spacing: -0.01em;
}

.page-about .stat-card__label {
  font-family: var(--about-font-sans);
  font-weight: 700;
  font-size: 0.92rem;
}

.page-about .stat-card__extra {
  font-family: var(--about-font-mono);
  font-weight: 300;
  font-size: 0.74rem;
  color: var(--about-sub);
}

.page-about .about-data__bg {
  display: block;
  width: 100%;
  max-width: 900px;
  height: auto;
  margin: 30px auto 0;
  border-radius: var(--radius, 10px);
  border: 1px solid var(--about-border);
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.32);
  object-fit: cover;
}

.page-about .about-ecosystem {
  margin-top: 64px;
  padding: 36px 0 20px;
  border-top: 1px solid var(--about-border);
}

.page-about .ecosystem-flex {
  display: flex;
  flex-direction: column;
  gap: 26px;
}

.page-about .ecosystem-copy {
  flex: 1 1 58%;
  display: grid;
  gap: 16px;
  font-family: var(--about-font-mono);
  font-weight: 300;
  font-size: 0.85rem;
  line-height: 1.72;
}

.page-about .ecosystem-copy p {
  margin: 0;
}

.page-about .ecosystem-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-about .ecosystem-list li {
  position: relative;
  padding: 12px 14px 12px 18px;
  background: rgba(16, 28, 58, 0.55);
  border-left: 3px solid rgba(240, 185, 11, 0.7);
  border-radius: 0 8px 8px 0;
  font-size: 0.82rem;
  line-height: 1.6;
}

.page-about .ecosystem-list strong {
  display: block;
  margin-bottom: 4px;
  color: var(--about-text);
  font-family: var(--about-font-sans);
  font-weight: 700;
  font-size: 0.88rem;
}

.page-about .ecosystem-tail {
  padding: 12px 14px;
  border-radius: 8px;
  background: rgba(179, 36, 42, 0.12);
  border: 1px solid rgba(179, 36, 42, 0.35);
  color: rgba(229, 231, 235, 0.88);
  font-size: 0.82rem;
}

.page-about .ecosystem-visual {
  flex: 0 1 42%;
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-about .ecosystem-visual img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius, 10px);
  border: 1px solid var(--about-border);
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.28);
  object-fit: cover;
}

.page-about .ecosystem-visual__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .ecosystem-visual__tags span {
  font-family: var(--about-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--about-node);
  border: 1px solid rgba(240, 185, 11, 0.35);
  border-radius: 999px;
  padding: 4px 12px;
  background: rgba(240, 185, 11, 0.08);
}

.page-about .about-honors {
  margin-top: 64px;
  padding: 36px 0 20px;
  border-top: 1px solid var(--about-border);
}

.page-about .honors-list {
  display: grid;
  gap: 14px;
  margin: 20px 0 0;
}

.page-about .honor-item {
  display: flex;
  gap: 16px;
  padding: 18px;
  background: linear-gradient(135deg, rgba(16, 28, 58, 0.88), rgba(10, 17, 40, 0.78));
  border: 1px solid var(--about-border);
  border-radius: var(--radius, 10px);
  transition: border-color 200ms ease, box-shadow 200ms ease;
}

.page-about .honor-item:hover,
.page-about .honor-item:focus-within {
  border-color: rgba(240, 185, 11, 0.58);
  box-shadow: 0 0 0 1px rgba(240, 185, 11, 0.16), 0 10px 26px rgba(0, 0, 0, 0.2);
}

.page-about .honor-item__mark {
  font-family: var(--about-font-mono);
  font-weight: 400;
  font-size: 1.1rem;
  color: transparent;
  -webkit-text-stroke: 1px rgba(240, 185, 11, 0.8);
  letter-spacing: 0.04em;
  line-height: 1.2;
  flex: 0 0 auto;
}

.page-about .honor-item__body h3 {
  margin: 0 0 6px;
  font-family: var(--about-font-sans);
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: 0.01em;
}

.page-about .honor-item__body p {
  margin: 0;
  font-family: var(--about-font-mono);
  font-weight: 300;
  font-size: 0.8rem;
  line-height: 1.65;
  color: var(--about-sub);
}

.page-about .about-honors__proof {
  margin: 22px 0 0;
  padding: 18px 20px;
  border-left: 3px solid var(--about-node);
  background: rgba(16, 28, 58, 0.55);
  border-radius: 0 var(--radius, 10px) var(--radius, 10px) 0;
  font-family: var(--about-font-mono);
  font-weight: 300;
  font-size: 0.84rem;
  line-height: 1.72;
  color: rgba(229, 231, 235, 0.9);
}

.page-about .about-cta {
  margin-top: 64px;
  padding: 40px 0 64px;
  border-top: 1px solid var(--about-border);
}

.page-about .cta-box {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 24px;
  background: radial-gradient(circle at 85% 15%, rgba(240, 185, 11, 0.13), transparent 55%), linear-gradient(135deg, rgba(16, 28, 58, 0.9), rgba(10, 17, 40, 0.96));
  border: 1px solid rgba(240, 185, 11, 0.32);
  border-radius: 14px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
}

.page-about .cta-box h3 {
  margin: 0 0 10px;
  font-family: var(--about-font-sans);
  font-weight: 900;
  font-size: 1.3rem;
}

.page-about .cta-box p {
  margin: 0;
  font-family: var(--about-font-mono);
  font-weight: 300;
  font-size: 0.83rem;
  line-height: 1.72;
  color: var(--about-sub);
}

.page-about .cta-box__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 22px;
  border-radius: 6px;
  font-family: var(--about-font-sans);
  font-weight: 700;
  font-size: 0.86rem;
  text-decoration: none;
  transition: background-color 200ms ease, color 200ms ease, border-color 200ms ease, box-shadow 200ms ease, transform 200ms ease;
  cursor: pointer;
}

.page-about .btn--primary {
  background: var(--about-node);
  color: #0A1128;
  border: 1px solid var(--about-node);
}

.page-about .btn--primary:hover,
.page-about .btn--primary:focus-visible {
  background: #ffd145;
  border-color: #ffd145;
  box-shadow: 0 0 0 3px rgba(240, 185, 11, 0.28);
  transform: translateY(-2px);
}

.page-about .btn--ghost {
  background: transparent;
  color: var(--about-text);
  border: 1px solid var(--about-border);
}

.page-about .btn--ghost:hover,
.page-about .btn--ghost:focus-visible {
  border-color: rgba(240, 185, 11, 0.6);
  color: var(--about-node);
  box-shadow: 0 0 0 3px rgba(240, 185, 11, 0.12);
  transform: translateY(-2px);
}

.page-about [data-reveal] {
  opacity: 1;
  transform: none;
  transition: opacity 500ms ease, transform 500ms ease;
}

@media (min-width: 768px) {
  .page-about .container {
    padding: 0 36px;
  }

  .page-about .about-hero {
    padding: 64px 0 36px;
  }

  .page-about .about-hero h1 {
    font-size: 2.8rem;
  }

  .page-about .about-hero__lead {
    font-size: 1.05rem;
  }

  .page-about .about-hero__grid {
    flex-direction: row;
    align-items: flex-start;
  }

  .page-about .section-title {
    font-size: 2.3rem;
  }

  .page-about .timeline {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 26px 30px;
  }

  .page-about .timeline::before {
    left: 50%;
    margin-left: -1px;
    width: 2px;
    background: linear-gradient(180deg, var(--about-node) 0%, rgba(240, 185, 11, 0.22) 30%, rgba(240, 185, 11, 0.08) 62%, transparent 100%);
  }

  .page-about .timeline__item {
    padding-left: 0;
  }

  .page-about .timeline__item:nth-child(odd) {
    padding-right: 40px;
    text-align: right;
  }

  .page-about .timeline__item:nth-child(even) {
    padding-left: 40px;
  }

  .page-about .timeline__item:nth-child(odd) .timeline__node::before {
    left: auto;
    right: -37px;
  }

  .page-about .timeline__item:nth-child(even) .timeline__node::before {
    left: -37px;
    right: auto;
  }

  .page-about .timeline__item:nth-child(odd) .timeline__bar {
    margin-left: auto;
  }

  .page-about .timeline__node {
    padding: 20px 22px;
  }

  .page-about .ecosystem-flex {
    flex-direction: row;
    align-items: flex-start;
  }

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

  .page-about .cta-box {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 30px 34px;
  }

  .page-about .cta-box__links {
    flex-shrink: 0;
  }
}

@media (min-width: 1024px) {
  .page-about .about-hero h1 {
    font-size: 3.2rem;
  }

  .page-about .section-title {
    font-size: 2.4rem;
  }

  .page-about .timeline {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 24px;
  }

  .page-about .timeline::before {
    left: 0;
    right: 0;
    margin-left: 0;
    top: 20px;
    bottom: auto;
    width: auto;
    height: 2px;
    background: linear-gradient(90deg, var(--about-node) 0%, rgba(240, 185, 11, 0.5) 22%, rgba(240, 185, 11, 0.22) 55%, rgba(240, 185, 11, 0.07) 78%, transparent 100%);
  }

  .page-about .timeline__item,
  .page-about .timeline__item:nth-child(odd),
  .page-about .timeline__item:nth-child(even) {
    padding: 0;
    text-align: left;
  }

  .page-about .timeline__item:nth-child(odd) .timeline__node::before,
  .page-about .timeline__item:nth-child(even) .timeline__node::before {
    left: 50%;
    right: auto;
    top: -25px;
    width: 14px;
    height: 14px;
    margin-left: -7px;
    transform: none;
  }

  .page-about .timeline__item:nth-child(odd) .timeline__bar,
  .page-about .timeline__item:nth-child(even) .timeline__bar {
    margin-left: 0;
  }

  .page-about .stats-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

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