.page-about {
  --about-ice: #F0F5FF;
  --about-line: rgba(255, 255, 255, 0.12);
  --about-orange-glow: rgba(255, 107, 53, 0.34);
  --about-gold-glow: rgba(245, 179, 0, 0.26);
  --about-deep-well: #071530;
  background: linear-gradient(180deg, var(--color-space) 0%, var(--color-deep) 100%);
}

.page-about .about-hero {
  position: relative;
  padding: 32px 0 64px;
  background:
    linear-gradient(115deg, rgba(7, 21, 48, 0.98) 0%, rgba(10, 28, 62, 0.98) 42%, rgba(15, 59, 74, 0.92) 100%);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--color-orange) 0%, var(--color-gold) 40%, transparent 100%);
  z-index: 2;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  top: 0;
  right: -80px;
  width: 260px;
  height: 100%;
  background: linear-gradient(135deg, transparent 40%, rgba(255, 107, 53, 0.16) 46%, rgba(245, 179, 0, 0.18) 66%, transparent 70%);
  transform: skewX(-8deg);
  pointer-events: none;
}

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

.page-about .about-hero-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
  margin-top: 40px;
}

.page-about .about-hero-copy {
  max-width: 720px;
}

.page-about .about-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(44px, 9vw, 72px);
  line-height: 0.92;
  letter-spacing: 0.01em;
  color: var(--color-ice);
  margin: 18px 0 24px;
  text-transform: uppercase;
}

.page-about .about-hero-lead {
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-slate);
  max-width: 640px;
  margin: 0 0 32px;
}

.page-about .about-hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 40px;
  padding-top: 24px;
  border-top: 1px solid var(--about-line);
}

.page-about .about-hero-stats .stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: 40px;
  line-height: 1;
  color: var(--color-gold);
}

.page-about .about-hero-stats .stat-label {
  display: inline-block;
  margin-top: 8px;
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--color-slate);
  text-transform: uppercase;
}

.page-about .about-hero-figure {
  margin: 0;
  max-width: 480px;
}

.page-about .about-hero-img {
  position: relative;
  border-radius: var(--radius);
  border: 1px solid var(--about-line);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.page-about .about-hero-img::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(255, 107, 53, 0.22) 55%, rgba(245, 179, 0, 0.16) 100%);
  pointer-events: none;
  mix-blend-mode: screen;
}

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

.page-about .about-hero-figure figcaption {
  margin-top: 12px;
  font-size: 13px;
  color: var(--color-slate);
  text-align: right;
  letter-spacing: 0.04em;
}

.page-about .chapter-nav {
  position: -webkit-sticky;
  position: sticky;
  top: var(--header-h-mobile);
  z-index: 30;
  background: rgba(10, 28, 62, 0.92);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--about-line);
  border-bottom: 1px solid var(--about-line);
}

.page-about .chapter-nav .chapter-list {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0 20px;
  gap: 4px;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.page-about .chapter-nav .chapter-list::-webkit-scrollbar {
  display: none;
}

.page-about .chapter-nav .chapter-link {
  display: inline-block;
  padding: 14px 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-slate);
  text-decoration: none;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: color 0.3s var(--ease), border-color 0.3s var(--ease);
}

.page-about .chapter-nav .chapter-link:hover,
.page-about .chapter-nav .chapter-link.is-active {
  color: var(--color-gold);
  border-bottom-color: var(--color-orange);
}

.page-about .about-section-head {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  margin: 64px 0 36px;
}

.page-about .about-section-head .section-index {
  font-family: var(--font-display);
  font-size: 72px;
  line-height: 0.8;
  color: transparent;
  -webkit-text-stroke: 1.5px rgba(245, 179, 0, 0.7);
  flex-shrink: 0;
  transform: translateY(-4px);
}

.page-about .about-section-heading h2 {
  font-family: var(--font-display);
  font-size: 36px;
  line-height: 1;
  color: var(--color-ice);
  margin: 8px 0 0;
  text-transform: uppercase;
}

.page-about .about-origin {
  position: relative;
  padding-bottom: 20px;
}

.page-about .about-origin::before {
  content: "";
  display: block;
  height: 4px;
  margin: 0 20px;
  background: linear-gradient(90deg, var(--color-deep) 0%, rgba(255, 107, 53, 0.6) 40%, transparent 100%);
  border-radius: 4px;
}

.page-about .about-origin-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
}

.page-about .about-origin-copy p {
  font-size: 16px;
  line-height: 1.85;
  color: #c6d4e2;
  margin: 0 0 18px;
}

.page-about .about-origin-copy .about-first::first-letter {
  font-family: var(--font-display);
  font-size: 56px;
  float: left;
  line-height: 0.8;
  margin: 8px 8px 0 0;
  color: var(--color-orange);
}

.page-about .about-origin-copy strong {
  color: var(--color-gold);
  font-weight: 700;
}

.page-about .about-origin-aside {
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-about .about-icefire {
  width: 100%;
  max-width: 420px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: stretch;
  gap: 0;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--about-line);
  box-shadow: var(--shadow-card);
  min-height: 320px;
}

.page-about .about-icefire-side {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 28px 14px;
}

.page-about .about-icefire-cold {
  background: linear-gradient(160deg, #16324f 0%, #4f7ba6 70%, #a9d7f2 100%);
}

.page-about .about-icefire-hot {
  background: linear-gradient(160deg, #641d0f 0%, #ff6b35 68%, #ffc46b 100%);
}

.page-about .about-icefire-divider {
  width: 2px;
  background: rgba(240, 245, 255, 0.5);
  position: relative;
}

.page-about .about-icefire-divider::after {
  content: "⇌";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--color-ice);
  font-size: 20px;
  background: var(--color-space);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-about .about-icefire-temp {
  font-family: var(--font-display);
  font-size: 48px;
  line-height: 1;
  color: var(--color-ice);
}

.page-about .about-icefire-name {
  font-size: 13px;
  letter-spacing: 0.18em;
  color: rgba(240, 245, 255, 0.85);
  text-transform: uppercase;
}

.page-about .about-milestones {
  position: relative;
  padding-bottom: 20px;
}

.page-about .about-milestones::before {
  content: "";
  display: block;
  height: 4px;
  margin: 48px 20px 0;
  background: linear-gradient(90deg, transparent 0%, var(--color-orange) 30%, var(--color-gold) 70%, transparent 100%);
  border-radius: 4px;
}

.page-about .about-milestone-banner {
  margin: 0 0 8px;
  height: 180px;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--about-line);
  box-shadow: var(--shadow-card);
  background: var(--about-deep-well);
}

.page-about .about-milestone-banner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  opacity: 0.9;
}

.page-about .about-growth {
  margin: 24px 0 8px;
  padding: 16px 8px 8px;
  background: rgba(7, 21, 48, 0.5);
  border-radius: 8px;
  border-left: 3px solid var(--color-orange);
}

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

.page-about .about-growth-line {
  fill: none;
  stroke: var(--color-gold);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 700;
  stroke-dashoffset: 0;
}

.page-about .about-growth-dot {
  fill: var(--color-orange);
  stroke: var(--color-space);
  stroke-width: 2;
}

.page-about .about-growth-text {
  font-family: var(--font-body);
  font-size: 13px;
  fill: var(--color-slate);
}

.page-about .about-timeline {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  position: relative;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 8px;
  width: 3px;
  background: linear-gradient(180deg, var(--color-orange) 0%, var(--color-gold) 50%, var(--color-slate) 100%);
  border-radius: 3px;
}

.page-about .about-timeline-item {
  position: relative;
  padding-left: 32px;
  margin-bottom: 16px;
}

.page-about .about-timeline-item::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 22px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--color-orange);
  border: 3px solid var(--color-space);
  box-shadow: 0 0 0 2px rgba(255, 107, 53, 0.45);
  z-index: 1;
}

.page-about .about-timeline-card {
  background: rgba(15, 59, 74, 0.3);
  border: 1px solid var(--about-line);
  border-radius: 8px;
  overflow: hidden;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.page-about .about-timeline-card:hover {
  border-color: rgba(255, 107, 53, 0.45);
  background: rgba(15, 59, 74, 0.55);
}

.page-about .about-timeline-card summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 18px;
  cursor: pointer;
  list-style: none;
  -webkit-user-select: none;
  user-select: none;
}

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

.page-about .about-timeline-year {
  font-family: var(--font-display);
  font-size: 24px;
  color: var(--color-gold);
  min-width: 56px;
  line-height: 1;
}

.page-about .about-timeline-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-ice);
  flex: 1;
}

.page-about .about-timeline-arrow {
  font-size: 20px;
  color: var(--color-orange);
  transition: transform 0.35s var(--ease);
}

.page-about .about-timeline-card[open] .about-timeline-arrow {
  transform: rotate(45deg);
}

.page-about .about-timeline-detail {
  padding: 0 18px 18px;
  margin-top: -4px;
}

.page-about .about-timeline-detail p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--color-slate);
  margin: 0;
  border-left: 3px solid var(--color-orange);
  padding-left: 14px;
}

.page-about .about-certifications {
  position: relative;
  padding-bottom: 20px;
}

.page-about .about-certifications::before {
  content: "";
  display: block;
  height: 4px;
  margin: 48px 20px 0;
  background: linear-gradient(90deg, transparent 0%, var(--color-gold) 60%, rgba(245, 179, 0, 0.2) 100%);
  border-radius: 4px;
}

.page-about .about-cert-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

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

.page-about .about-cert-card {
  background: linear-gradient(140deg, rgba(10, 28, 62, 0.9) 0%, rgba(15, 59, 74, 0.75) 100%);
  border: 1px solid rgba(245, 179, 0, 0.3);
  border-radius: 8px;
  padding: 24px 22px;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s var(--ease);
}

.page-about .about-cert-card:hover {
  transform: translateY(-6px) scale(1.02);
  border-color: var(--color-gold);
  box-shadow: 0 16px 42px rgba(0, 0, 0, 0.45), 0 0 20px var(--about-gold-glow);
}

.page-about .about-cert-icon {
  width: 52px;
  height: 52px;
  color: var(--color-gold);
  margin-bottom: 16px;
}

.page-about .about-cert-icon svg {
  width: 100%;
  height: 100%;
  display: block;
  filter: drop-shadow(0 0 8px rgba(245, 179, 0, 0.35));
}

.page-about .about-cert-card h3 {
  font-family: var(--font-display);
  font-size: 20px;
  line-height: 1.2;
  color: var(--color-ice);
  margin: 0 0 10px;
  text-transform: uppercase;
}

.page-about .about-cert-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-slate);
  margin: 0;
}

.page-about .about-cert-figure {
  margin: 0;
  position: relative;
}

.page-about .about-cert-figure .img-block {
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid rgba(245, 179, 0, 0.25);
  box-shadow: var(--shadow-card);
}

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

.page-about .about-cert-figure figcaption {
  margin-top: 12px;
  font-size: 13px;
  color: var(--color-slate);
  text-align: center;
  letter-spacing: 0.06em;
}

.page-about .about-team {
  position: relative;
}

.page-about .about-team::before {
  content: "";
  display: block;
  height: 4px;
  margin: 48px 20px 0;
  background: linear-gradient(90deg, transparent 0%, var(--color-indigo) 40%, rgba(75, 0, 130, 0.25) 100%);
  border-radius: 4px;
}

.page-about .about-team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  align-items: center;
}

.page-about .about-team-copy p {
  font-size: 16px;
  line-height: 1.85;
  color: #c6d4e2;
  margin: 0 0 18px;
}

.page-about .about-team-chart {
  display: grid;
  gap: 20px;
  padding: 28px 24px;
  background: rgba(7, 21, 48, 0.55);
  border-radius: 10px;
  border-left: 3px solid var(--color-gold);
}

.page-about .about-chart-row {
  display: grid;
  grid-template-columns: 88px 1fr 56px;
  align-items: center;
  gap: 12px;
}

.page-about .about-chart-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-ice);
}

.page-about .about-chart-track {
  height: 10px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.page-about .about-chart-fill {
  display: block;
  height: 100%;
  border-radius: 6px;
}

.page-about .about-chart-fill.is-tech {
  background: linear-gradient(90deg, var(--color-orange), var(--color-gold));
}

.page-about .about-chart-fill.is-content {
  background: linear-gradient(90deg, #4f7ba6, #a9d7f2);
}

.page-about .about-chart-fill.is-support {
  background: linear-gradient(90deg, var(--color-wine), #d2691e);
}

.page-about .about-chart-fill.is-business {
  background: linear-gradient(90deg, var(--color-indigo), #7b4bb0);
}

.page-about .about-chart-value {
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--color-gold);
  text-align: right;
  white-space: nowrap;
}

.page-about .about-next {
  padding: 64px 0 72px;
}

.page-about .about-next-head {
  margin-bottom: 32px;
}

.page-about .about-next-head h2 {
  font-family: var(--font-display);
  font-size: 32px;
  line-height: 1.1;
  color: var(--color-ice);
  margin: 8px 0 0;
  text-transform: uppercase;
}

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

.page-about .about-next-card {
  position: relative;
  display: block;
  padding: 26px 24px 24px;
  border-radius: 8px;
  text-decoration: none;
  overflow: hidden;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s var(--ease);
}

.page-about .about-next-card:hover {
  transform: translateY(-6px);
  border-color: var(--color-orange);
  box-shadow: var(--shadow-float);
}

.page-about .about-next-num {
  position: absolute;
  top: 8px;
  right: 14px;
  font-family: var(--font-display);
  font-size: 56px;
  line-height: 1;
  color: rgba(255, 255, 255, 0.06);
  pointer-events: none;
}

.page-about .about-next-card h3 {
  font-family: var(--font-display);
  font-size: 20px;
  color: var(--color-ice);
  margin: 0 0 8px;
  text-transform: uppercase;
}

.page-about .about-next-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-slate);
  margin: 0;
  max-width: 28em;
}

.page-about .about-next-foot {
  margin-top: 36px;
  padding: 18px 0 0;
  border-top: 1px solid var(--about-line);
  font-size: 13px;
  color: var(--color-slate);
  letter-spacing: 0.04em;
  text-align: center;
}

@media (min-width: 720px) {
  .page-about .about-hero {
    padding: 48px 0 84px;
  }

  .page-about .about-hero-layout {
    grid-template-columns: 1.2fr 0.8fr;
    gap: 48px;
    margin-top: 56px;
  }

  .page-about .about-hero h1 {
    font-size: clamp(56px, 7vw, 72px);
  }

  .page-about .about-hero-figure {
    justify-self: end;
  }

  .page-about .chapter-nav {
    top: var(--header-h);
  }

  .page-about .about-origin-grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 56px;
  }

  .page-about .about-icefire {
    min-height: 360px;
  }

  .page-about .about-milestone-banner {
    height: 260px;
  }

  .page-about .about-timeline::before {
    left: 16px;
  }

  .page-about .about-timeline-item {
    padding-left: 52px;
  }

  .page-about .about-timeline-item::before {
    left: 10px;
  }

  .page-about .about-cert-layout {
    grid-template-columns: 1fr 380px;
    gap: 40px;
    align-items: center;
  }

  .page-about .about-cert-grid {
    grid-template-columns: 1fr 1fr;
  }

  .page-about .about-team-grid {
    grid-template-columns: 1fr 1fr;
    gap: 56px;
  }

  .page-about .about-next-grid {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }

  .page-about .about-next-head h2 {
    font-size: 40px;
  }
}

@media (min-width: 1024px) {
  .page-about .about-hero h1 {
    font-size: 84px;
  }

  .page-about .about-hero-lead {
    font-size: 18px;
  }

  .page-about .about-next-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .about-next-foot {
    text-align: left;
  }
}