.page-about {
  --about-accent: #FF4D2E;
  --about-ocean: #0A1E4F;
  --about-ink: #0B0F19;
  --about-panel: #151B28;
  --about-panel-2: #1C2434;
  --about-silver: #B0B7C3;
  --about-muted: #A5B0C0;
  --about-line: rgba(176, 183, 195, 0.18);
  --about-white: #F5F7FA;
  --about-green: #28D17C;
  --about-gold: #FFC542;
  --about-purple: #9D4EDD;
  --about-gutter: 24px;
  --about-radius-sm: 6px;
  --about-radius-md: 12px;
  --about-radius-lg: 20px;
  --about-ease: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
  --about-head: "Arial Black", "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  --about-body: "Segoe UI", "Roboto", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--about-ink);
  color: var(--about-white);
  overflow-x: hidden;
}

.page-about .container-wide {
  width: 100%;
  max-width: var(--container-wide);
  margin-inline: auto;
  padding-inline: var(--about-gutter);
  box-sizing: border-box;
}

.page-about .breadcrumb {
  padding-block: 10px 22px;
}

.page-about .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  border-radius: var(--about-radius-sm);
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.02em;
  transition: transform var(--about-ease), box-shadow var(--about-ease), background-color var(--about-ease), border-color var(--about-ease);
  font-family: var(--about-body);
  cursor: pointer;
}

.page-about .btn-primary {
  background: var(--about-accent);
  color: #fff;
  box-shadow: 0 4px 14px rgba(255, 77, 46, 0.25);
}

.page-about .btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255, 77, 46, 0.38);
}

.page-about .btn-outline {
  border: 1px solid var(--about-silver);
  color: var(--about-white);
  background: transparent;
}

.page-about .btn-outline:hover {
  border-color: var(--about-accent);
  color: var(--about-accent);
}

.page-about .eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--about-accent);
  border: 1px solid rgba(255, 77, 46, 0.4);
  background: rgba(255, 77, 46, 0.08);
  padding: 5px 10px;
  transform: skewX(-6deg);
  margin-bottom: 18px;
}

.page-about .section-title {
  font-family: var(--about-head);
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  line-height: 1.05;
  font-style: italic;
  transform: skewX(-4deg);
  color: var(--about-white);
  margin-bottom: 18px;
  letter-spacing: -0.01em;
}

.page-about .divider-strong {
  height: 2px;
  max-width: calc(var(--container-wide) - 48px);
  background: linear-gradient(90deg, rgba(255, 77, 46, 0.9), rgba(255, 77, 46, 0.12) 65%, transparent);
  margin-block: 12px;
  border: none;
}

.page-about .about-masthead {
  position: relative;
  padding-block: 44px 24px;
}

.page-about .about-masthead-title {
  font-size: clamp(2.5rem, 6vw, 4.8rem);
  font-style: italic;
  font-weight: 900;
  line-height: 0.99;
  margin-bottom: 26px;
  max-width: 960px;
  letter-spacing: -0.02em;
  font-family: var(--about-head);
  position: relative;
  z-index: 1;
}

.page-about .about-masthead-title::after {
  content: "";
  display: block;
  width: 72px;
  height: 4px;
  background: var(--about-accent);
  margin-top: 18px;
  transform: skewX(-18deg);
  box-shadow: 0 0 20px rgba(255, 77, 46, 0.6);
}

.page-about .about-masthead-lead {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--about-muted);
  max-width: 780px;
  margin-bottom: 30px;
}

.page-about .about-masthead-meta {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  max-width: 780px;
}

.page-about .meta-item {
  border-left: 2px solid var(--about-accent);
  padding: 10px 14px;
  background: rgba(21, 27, 40, 0.75);
  border-radius: 0 8px 8px 0;
}

.page-about .meta-label {
  display: block;
  font-size: 0.75rem;
  color: var(--about-muted);
  text-transform: uppercase;
  letter-spacing: 0.09em;
  margin-bottom: 4px;
}

.page-about .meta-value {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--about-white);
  font-family: var(--about-head);
}

.page-about .about-lede {
  display: flex;
  flex-direction: column;
  gap: 22px;
  align-items: flex-start;
  padding-block: 28px 18px;
}

.page-about .about-lede-text {
  font-size: 1.25rem;
  line-height: 1.65;
  color: var(--about-white);
  max-width: 640px;
  border-left: 3px solid var(--about-accent);
  padding-left: 18px;
  margin: 0;
}

.page-about .about-section-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  align-items: start;
}

.page-about .aside-label {
  font-family: var(--about-head);
  font-size: 0.8rem;
  font-style: italic;
  color: var(--about-accent);
  letter-spacing: 0.14em;
  margin-bottom: 12px;
  text-transform: uppercase;
  border-bottom: 1px solid rgba(255, 77, 46, 0.35);
  padding-bottom: 8px;
}

.page-about .aside-copy {
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--about-muted);
  margin-bottom: 14px;
}

.page-about .text-link {
  display: inline-block;
  font-size: 0.9rem;
  text-decoration: none;
  color: var(--about-white);
  border-bottom: 1px solid rgba(255, 77, 46, 0.5);
  padding-bottom: 2px;
  transition: color var(--about-ease), border-color var(--about-ease);
}

.page-about .text-link:hover {
  color: var(--about-accent);
  border-color: var(--about-accent);
}

.page-about .about-story-columns {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-about .about-story-columns p {
  font-size: 0.975rem;
  line-height: 1.8;
  color: var(--about-muted);
  margin: 0;
}

.page-about .about-milestone-aside,
.page-about .about-capability-aside,
.page-about .about-team-aside,
.page-about .about-ecosystem-aside {
  background: rgba(21, 27, 40, 0.6);
  border-left: 2px solid var(--about-accent);
  padding: 20px;
  border-radius: 0 12px 12px 0;
}

.page-about .about-milestone-img,
.page-about .about-team-img {
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--about-radius-md);
  margin-top: 14px;
  display: block;
  object-fit: cover;
}

.page-about .about-timeline {
  position: relative;
  padding-left: 24px;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--about-accent), rgba(255, 77, 46, 0.15) 45%, rgba(176, 183, 195, 0.25));
}

.page-about .timeline-item {
  position: relative;
  margin-bottom: 22px;
  padding-left: 22px;
}

.page-about .timeline-item::before {
  content: "";
  position: absolute;
  left: -23px;
  top: 8px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--about-ink);
  border: 2px solid var(--about-accent);
  box-shadow: 0 0 10px rgba(255, 77, 46, 0.5);
}

.page-about .timeline-mark {
  font-family: var(--about-head);
  font-size: 0.85rem;
  font-style: italic;
  font-weight: 900;
  color: var(--about-accent);
  margin-bottom: 4px;
  letter-spacing: 0.04em;
}

.page-about .timeline-body {
  background: linear-gradient(120deg, rgba(21, 27, 40, 0.85), rgba(10, 30, 79, 0.5));
  border: 1px solid rgba(176, 183, 195, 0.16);
  border-radius: 12px;
  padding: 16px 18px;
  transition: border-color var(--about-ease), box-shadow var(--about-ease);
}

.page-about .timeline-body:hover {
  border-color: rgba(255, 77, 46, 0.5);
  box-shadow: 0 4px 20px rgba(255, 77, 46, 0.08);
}

.page-about .timeline-heading {
  font-size: 1.05rem;
  line-height: 1.3;
  margin-bottom: 6px;
  color: var(--about-white);
  font-family: var(--about-head);
}

.page-about .timeline-desc {
  font-size: 0.885rem;
  line-height: 1.7;
  color: var(--about-muted);
  margin-bottom: 8px;
}

.page-about .timeline-toggle {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--about-accent);
  font-size: 0.85rem;
  font-weight: 700;
  padding: 0;
  cursor: pointer;
  border-bottom: 1px dashed rgba(255, 77, 46, 0.5);
  transition: color var(--about-ease), border-color var(--about-ease);
}

.page-about .timeline-toggle:hover {
  color: var(--about-gold);
  border-bottom-color: var(--about-gold);
}

.page-about .timeline-detail {
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--about-white);
  border-top: 1px solid rgba(255, 77, 46, 0.22);
  margin-top: 10px;
  padding-top: 10px;
}

.page-about .timeline-detail[hidden] {
  display: none;
}

.page-about .about-capability-stats {
  margin-bottom: 26px;
}

.page-about .stat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.page-about .stat-item {
  padding: 18px 16px;
}

.page-about .stat-label {
  display: block;
  font-size: 0.78rem;
  color: var(--about-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}

.page-about .stat-value {
  display: block;
  font-family: var(--about-head);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-style: italic;
  color: var(--about-accent);
  line-height: 1;
}

.page-about .about-capability-visual {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-about .about-capability-map {
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: 16px;
  object-fit: cover;
  border: 1px solid rgba(176, 183, 195, 0.2);
}

.page-about .capability-radar {
  border-radius: 16px;
  padding: 22px 18px;
}

.page-about .capability-radar svg {
  width: 100%;
  height: auto;
  display: block;
}

.page-about .radar-label {
  font-size: 11px;
  fill: var(--about-silver);
  font-weight: 600;
}

.page-about .radar-caption {
  font-size: 0.83rem;
  line-height: 1.65;
  color: var(--about-muted);
  padding-top: 12px;
  border-top: 1px solid rgba(176, 183, 195, 0.2);
  margin-top: 14px;
}

.page-about .about-capability-note {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--about-muted);
  background: rgba(21, 27, 40, 0.7);
  padding: 10px 12px;
  border-radius: 30px;
  margin-top: 16px;
}

.page-about .status-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--about-green);
  box-shadow: 0 0 8px rgba(40, 209, 124, 0.7);
}

.page-about .team-intro {
  font-size: 1.02rem;
  line-height: 1.75;
  color: var(--about-white);
  max-width: 700px;
  margin-bottom: 24px;
}

.page-about .about-team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about .team-role-card {
  background: var(--about-panel);
  border: 1px solid rgba(176, 183, 195, 0.18);
  border-radius: 14px;
  padding: 20px;
  transition: border-color var(--about-ease), transform var(--about-ease);
}

.page-about .team-role-card:hover {
  border-color: var(--about-accent);
  transform: translateY(-2px);
}

.page-about .role-icon {
  margin-bottom: 12px;
}

.page-about .role-icon svg {
  display: block;
}

.page-about .role-title {
  font-size: 1.02rem;
  color: var(--about-white);
  margin-bottom: 8px;
  font-family: var(--about-head);
}

.page-about .role-desc {
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--about-muted);
  margin: 0;
}

.page-about .team-footnote {
  font-size: 0.85rem;
  color: var(--about-muted);
  margin-top: 20px;
  border-left: 2px solid rgba(255, 77, 46, 0.5);
  padding-left: 14px;
  line-height: 1.7;
}

.page-about .about-cert-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .cert-card {
  padding: 22px;
  border-radius: 14px;
  transition: border-color var(--about-ease), box-shadow var(--about-ease), transform var(--about-ease);
  cursor: default;
}

.page-about .cert-card:hover,
.page-about .cert-card:focus-visible {
  border-color: var(--about-gold);
  box-shadow: 0 0 0 1px rgba(255, 197, 66, 0.3), 0 8px 24px rgba(255, 197, 66, 0.06);
  transform: translateY(-2px);
  outline: none;
}

.page-about .cert-badge {
  margin-bottom: 14px;
}

.page-about .cert-badge svg {
  display: block;
}

.page-about .cert-title {
  font-size: 1.05rem;
  color: var(--about-white);
  font-weight: 800;
  margin-bottom: 8px;
  font-family: var(--about-head);
}

.page-about .cert-desc {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--about-muted);
  margin: 0;
}

.page-about .about-ecosystem-foot {
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: flex-start;
  background: linear-gradient(120deg, rgba(10, 30, 79, 0.45), rgba(21, 27, 40, 0.8));
  border-radius: 14px;
  padding: 22px;
  margin-top: 22px;
}

.page-about .about-ecosystem-foot p {
  font-size: 0.93rem;
  line-height: 1.75;
  color: var(--about-muted);
  margin: 0;
  max-width: 720px;
}

.page-about .about-cta-band {
  padding-block: 36px 20px;
}

.page-about .cta-band-inner {
  border-radius: 20px;
  padding: 30px 24px;
  text-align: center;
  border: 1px solid rgba(255, 77, 46, 0.28);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.page-about .cta-band-title {
  font-family: var(--about-head);
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  font-style: italic;
  color: var(--about-white);
  margin-bottom: 10px;
}

.page-about .cta-band-desc {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--about-muted);
  max-width: 580px;
  margin-bottom: 22px;
}

.page-about .cta-band-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
}

.page-about .about-more-links {
  padding-bottom: 40px;
}

.page-about .more-links-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  justify-content: center;
}

.page-about .more-link {
  display: inline-flex;
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--about-muted);
  border-bottom: 1px solid rgba(176, 183, 195, 0.3);
  padding-bottom: 3px;
  transition: color var(--about-ease), border-color var(--about-ease);
}

.page-about .more-link:hover {
  color: var(--about-accent);
  border-color: var(--about-accent);
}

[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1), transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-reveal].is-revealed {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .page-about * {
    animation: none !important;
    transition: none !important;
  }
}

@media (min-width: 720px) {
  .page-about .about-masthead-meta {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .about-themed-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

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

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

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

@media (min-width: 980px) {
  .page-about {
    background:
      radial-gradient(circle at 85% 10%, rgba(255, 77, 46, 0.06), transparent 30%),
      radial-gradient(circle at 12% 55%, rgba(10, 30, 79, 0.55), transparent 34%),
      var(--about-ink);
  }

  .page-about .about-section-grid {
    grid-template-columns: 280px 1fr;
    gap: 44px;
  }

  .page-about .about-section-grid > .about-story-aside,
  .page-about .about-section-grid > .about-milestone-aside,
  .page-about .about-section-grid > .about-capability-aside,
  .page-about .about-section-grid > .about-team-aside,
  .page-about .about-section-grid > .about-ecosystem-aside {
    position: sticky;
    top: 96px;
    align-self: start;
  }

  .page-about .about-story-columns {
    grid-template-columns: 1fr 1fr;
    column-gap: 32px;
  }

  .page-about .about-capability-visual {
    grid-template-columns: minmax(280px, 1fr) 1fr;
    gap: 22px;
    align-items: stretch;
  }

  .page-about .about-capability-map {
    height: 100%;
    min-height: 260px;
    object-fit: cover;
  }

  .page-about .capability-radar {
    display: flex;
    flex-direction: column;
    justify-content: center;
  }

  .page-about .cert-card:hover .cert-title::after {
    width: 36px;
  }

  .page-about .cert-title::after {
    content: "";
    display: block;
    width: 0px;
    height: 2px;
    background: var(--about-gold);
    margin-top: 8px;
    transition: width 0.3s ease;
  }

  .page-about .timeline-item {
    padding-left: 26px;
  }

  .page-about .cta-band-inner {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: space-between;
    text-align: left;
    padding: 34px 40px;
  }

  .page-about .cta-band-desc {
    margin-bottom: 0;
  }
}

@media (min-width: 1200px) {
  .page-about .about-team-grid {
    grid-template-columns: repeat(4, 1fr);
  }

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

  .page-about .about-ecosystem-foot {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

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