.page-about {
  --about-track: rgba(184, 255, 46, 0.4);
  --about-ink: rgba(245, 247, 250, 0.08);
  color: var(--white);
  background: var(--bg);
  overflow-x: hidden;
}

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

.page-about .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.375rem;
  margin-bottom: 1.25rem;
  color: var(--muted);
  font-size: 0.875rem;
}

.page-about .breadcrumb a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.page-about .breadcrumb a:hover {
  color: var(--green);
}

.page-about .breadcrumb-sep {
  opacity: 0.5;
}

.page-about .about-hero {
  position: relative;
  padding: 1.75rem 0 3rem;
  background:
    radial-gradient(circle at 82% 12%, rgba(184, 255, 46, 0.16), transparent 44%),
    linear-gradient(150deg, var(--bg-deep), var(--bg) 58%, #0e1932 100%);
  border-bottom: 1px solid rgba(184, 255, 46, 0.22);
}

.page-about .about-hero::after {
  content: "";
  display: block;
  height: 3px;
  background: linear-gradient(90deg, var(--green) 0 34%, var(--orange) 34% 52%, transparent 52%);
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
}

.page-about .about-hero-grid {
  display: grid;
  gap: 2.5rem;
  align-items: center;
}

.page-about .about-hero-main {
  max-width: 48rem;
}

.page-about .about-hero-main .section-kicker {
  display: inline-block;
  margin-bottom: 0.75rem;
  color: var(--green);
  font-family: var(--font-data);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.page-about .about-hero-main h1 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: var(--h1);
  line-height: 1.05;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.page-about .about-hero-lead {
  margin: 0;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.8;
  max-width: 42rem;
}

.page-about .about-hero-actions {
  margin-top: 1.25rem;
}

.page-about .tag {
  background: rgba(245, 247, 250, 0.06);
  border: 1px solid rgba(184, 255, 46, 0.35);
  color: var(--white);
}

.page-about .about-hero-art {
  position: relative;
  min-height: 13rem;
}

.page-about .about-hero-year-big {
  position: absolute;
  right: 0;
  top: 0;
  z-index: 0;
  font-family: var(--font-data);
  font-weight: 800;
  font-size: clamp(4.8rem, 14vw, 9rem);
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 2px var(--green);
  user-select: none;
}

.page-about .about-hero-mark {
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 1;
  background: var(--green);
  color: var(--bg);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  padding: 0.6rem 1rem;
  clip-path: polygon(0 0, calc(100% - 0.6rem) 0, 100% 0.6rem, 100% 100%, 0 100%);
}

.page-about .about-route {
  position: relative;
  padding: 3rem 0 1rem;
}

.page-about .about-timeline-head {
  display: grid;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.page-about .section-head {
  margin-bottom: 1.25rem;
}

.page-about .section-kicker {
  display: inline-block;
  margin-bottom: 0.5rem;
  color: var(--green);
  font-family: var(--font-data);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.8125rem;
}

.page-about .section-title {
  margin: 0 0 0.6rem;
  font-family: var(--font-display);
  font-size: var(--h2);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.page-about .section-lead {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.8;
  max-width: 42rem;
}

.page-about .about-timeline-art {
  max-width: 24rem;
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-timeline-art img {
  width: 100%;
  height: auto;
  object-fit: cover;
  transform: scale(1.02);
  transition: transform 0.6s var(--ease);
}

.page-about .about-timeline-art:hover img {
  transform: scale(1.05);
}

.page-about .about-timeline {
  position: relative;
  padding-left: 1.5rem;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--green) 0%, var(--green) 72%, var(--orange) 100%);
}

.page-about .about-timeline-item {
  position: relative;
  margin-bottom: 1.25rem;
}

.page-about .about-timeline-item::before {
  content: "";
  position: absolute;
  left: -1.875rem;
  top: 1.35rem;
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 4px rgba(184, 255, 46, 0.18), 0 0 1rem rgba(184, 255, 46, 0.5);
}

.page-about .about-timeline-item:last-child::before {
  background: var(--orange);
  box-shadow: 0 0 0 4px rgba(255, 106, 0, 0.18), 0 0 1rem rgba(255, 106, 0, 0.5);
}

.page-about .about-timeline-card {
  display: block;
  margin: 0;
  padding: 1.1rem 1.25rem 1.25rem;
  background: rgba(27, 42, 68, 0.55);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(245, 247, 250, 0.08);
  border-radius: var(--radius);
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease);
}

.page-about .about-timeline-card:hover {
  transform: translateY(-4px);
  border-color: rgba(184, 255, 46, 0.4);
}

.page-about .about-timeline-summary {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.75rem;
  cursor: pointer;
}

.page-about .about-timeline-summary::-webkit-details-marker {
  display: none;
}

.page-about .about-timeline-year {
  font-family: var(--font-data);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--green);
}

.page-about .about-timeline-summary h3 {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.page-about .about-timeline-card[open] .about-timeline-summary::after {
  content: "−";
  margin-left: auto;
  color: var(--green);
  font-family: var(--font-data);
  font-size: 1.1rem;
}

.page-about .about-timeline-card:not([open]) .about-timeline-summary::after {
  content: "+";
  margin-left: auto;
  color: var(--muted);
  font-family: var(--font-data);
  font-size: 1.1rem;
}

.page-about .about-timeline-body {
  margin-top: 0.75rem;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.75;
}

.page-about .about-numbers {
  position: relative;
  padding: 3rem 0;
  background: linear-gradient(180deg, #08101c, var(--bg-deep) 60%, #08101c);
  overflow: hidden;
}

.page-about .about-numbers::before {
  content: "180万+";
  position: absolute;
  right: -0.5rem;
  top: 2rem;
  z-index: 0;
  font-family: var(--font-data);
  font-weight: 900;
  font-size: clamp(6rem, 16vw, 12rem);
  line-height: 1;
  color: rgba(184, 255, 46, 0.05);
  pointer-events: none;
}

.page-about .about-numbers .container {
  position: relative;
  z-index: 1;
}

.page-about .about-stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.page-about .about-stat {
  position: relative;
  padding: 1rem 1rem 1.1rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(245, 247, 250, 0.08);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.3s var(--ease), background-color 0.3s var(--ease);
}

.page-about .about-stat:hover {
  transform: translateY(-4px);
  background: rgba(184, 255, 46, 0.06);
}

.page-about .about-stat-num {
  display: block;
  font-family: var(--font-data);
  font-size: clamp(2rem, 6vw, 3rem);
  font-weight: 800;
  line-height: 1.1;
  color: var(--green);
}

.page-about .about-stat-label {
  display: block;
  margin-top: 0.4rem;
  color: var(--muted);
  font-size: 0.875rem;
}

.page-about .about-numbers-visual {
  position: relative;
  margin-top: 2rem;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(245, 247, 250, 0.08);
}

.page-about .about-numbers-visual img {
  width: 100%;
  min-height: 14rem;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}

.page-about .about-numbers-visual:hover img {
  transform: scale(1.03);
}

.page-about .about-numbers-visual-cap {
  position: absolute;
  left: 1rem;
  bottom: 1rem;
  display: grid;
  gap: 0.1rem;
  background: rgba(8, 16, 28, 0.78);
  backdrop-filter: blur(8px);
  padding: 0.5rem 0.75rem;
  border-left: 2px solid var(--green);
  color: var(--white);
  font-size: 0.8rem;
}

.page-about .about-numbers-visual-cap .mono {
  color: var(--green);
}

.page-about .about-quality {
  padding: 3rem 0;
}

.page-about .about-quality-grid {
  display: grid;
  gap: 2rem;
}

.page-about .about-quality-media img {
  width: 100%;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid rgba(245, 247, 250, 0.1);
}

.page-about .about-quality-content .section-head {
  margin-bottom: 1rem;
}

.page-about .about-quality-content > p {
  margin: 0 0 1rem;
  color: var(--muted);
  line-height: 1.8;
}

.page-about .about-quality-list {
  margin: 0 0 1.25rem;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.6rem;
}

.page-about .about-quality-list li {
  position: relative;
  padding-left: 1.25rem;
  color: var(--white);
  font-size: 0.95rem;
}

.page-about .about-quality-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 0.5rem;
  height: 2px;
  background: var(--green);
}

.page-about .about-honors {
  position: relative;
  padding: 3rem 0;
  background:
    linear-gradient(165deg, rgba(27, 42, 68, 0.5), rgba(8, 16, 28, 0.2)),
    var(--bg);
}

.page-about .about-section-head--center {
  text-align: center;
  max-width: 52rem;
  margin-inline: auto;
  margin-bottom: 2rem;
}

.page-about .about-section-head--center .section-lead {
  margin-inline: auto;
}

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

.page-about .about-honor-card {
  position: relative;
  padding: 1.5rem 1.5rem 1.75rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(245, 247, 250, 0.08);
  border-radius: var(--radius);
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease);
}

.page-about .about-honor-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 106, 0, 0.4);
}

.page-about .about-honor-card--accent {
  background: linear-gradient(160deg, rgba(255, 106, 0, 0.12), rgba(255, 106, 0, 0.03));
  border-color: rgba(255, 106, 0, 0.28);
}

.page-about .about-honor-mark {
  display: inline-block;
  margin-bottom: 0.75rem;
  padding-bottom: 0.25rem;
  border-bottom: 2px solid rgba(255, 106, 0, 0.5);
  font-family: var(--font-data);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--orange);
}

.page-about .about-honor-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.2rem;
  font-weight: 700;
}

.page-about .about-honor-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.7;
}

.page-about .about-vision {
  padding: 3rem 0 4rem;
}

.page-about .about-vision-grid {
  display: grid;
  gap: 2rem;
}

.page-about .about-vision-content > p {
  margin: 0 0 1rem;
  color: var(--muted);
  line-height: 1.8;
}

.page-about .about-vision-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.page-about .about-vision-media img {
  width: 100%;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid rgba(245, 247, 250, 0.1);
}

@media (min-width: 64rem) {
  .page-about .about-hero {
    padding: 3rem 0 4.5rem;
  }

  .page-about .about-hero-grid {
    grid-template-columns: 1.3fr 0.7fr;
    gap: 3rem;
  }

  .page-about .about-timeline-head {
    grid-template-columns: 1.2fr 0.8fr;
    align-items: end;
    margin-bottom: 3rem;
  }

  .page-about .about-timeline-art {
    justify-self: end;
  }

  .page-about .about-timeline {
    padding-left: 3.75rem;
  }

  .page-about .about-timeline-item {
    margin-bottom: 1.75rem;
  }

  .page-about .about-timeline-item::before {
    left: -4.125rem;
    top: 1.45rem;
  }

  .page-about .about-timeline-card {
    padding: 1.25rem 1.6rem 1.4rem;
  }

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

  .page-about .about-quality-grid {
    grid-template-columns: 0.85fr 1.15fr;
    gap: 3rem;
    align-items: center;
  }

  .page-about .about-honor-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
  }

  .page-about .about-vision-grid {
    grid-template-columns: 1.2fr 0.8fr;
    gap: 3rem;
    align-items: center;
  }
}