.page-about {
  overflow-x: hidden;
}

/* ---------- HERO ---------- */
.page-about .about-hero-frame {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-card);
}

.page-about .about-frame-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1.25rem;
  font-family: var(--font-mono);
  font-size: var(--size-index);
  letter-spacing: 0.14em;
  color: var(--c-gold-light);
  background: rgba(6, 18, 36, 0.65);
  border-bottom: 1px solid rgba(232, 163, 61, 0.35);
  position: relative;
  z-index: 2;
}

.page-about .about-frame-label__code {
  color: rgba(244, 241, 232, 0.55);
}

.page-about .about-hero-media {
  height: 180px;
  overflow: hidden;
}

.page-about .about-hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}

.page-about .about-hero-content {
  padding: 1.5rem 1.25rem 2rem;
}

.page-about .about-hero-content .breadcrumb {
  margin-bottom: 1rem;
}

.page-about .about-hero-content .breadcrumb a {
  color: var(--c-gold-light);
  text-decoration: none;
}

.page-about .about-hero-content .breadcrumb a:hover {
  color: var(--c-white);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.page-about .about-hero-kicker {
  font-family: var(--font-mono);
  font-size: var(--size-caption);
  color: var(--c-gold);
  letter-spacing: 0.12em;
  margin-bottom: 0.75rem;
}

.page-about .about-hero-content h1 {
  font-family: var(--font-heading);
  font-size: var(--size-h1);
  line-height: 1.25;
  color: var(--c-white);
  margin: 0 0 1.25rem;
}

.page-about .about-hero-lead {
  color: rgba(244, 241, 232, 0.78);
  max-width: 42rem;
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

.page-about .about-hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.page-about .about-hero-tags .tag--line {
  border-color: rgba(244, 241, 232, 0.4);
  color: var(--c-paper);
}

/* ---------- STATS ---------- */
.page-about .about-stat-grid {
  margin-bottom: 1rem;
}

.page-about .about-stat-note {
  font-size: var(--size-caption);
  color: rgba(26, 26, 26, 0.7);
  text-align: center;
  margin-top: 1.25rem;
  font-family: var(--font-mono);
  line-height: 1.8;
}

/* ---------- TIMELINE ---------- */
.page-about .about-timeline-section {
  background: var(--c-paper-gray);
}

.page-about .timeline {
  margin-top: 2.5rem;
}

.page-about .timeline-item {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 0.5rem 1.25rem;
  padding-bottom: 2.25rem;
}

.page-about .timeline-year {
  grid-column: 1 / -1;
  grid-row: 1;
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--c-deep);
  line-height: 1.2;
  letter-spacing: 0.02em;
}

.page-about .timeline-rail {
  grid-column: 1;
  grid-row: 2;
  position: relative;
  display: flex;
  justify-content: center;
}

.page-about .timeline-content {
  grid-column: 2;
  grid-row: 2;
}

.page-about .timeline-rail::before {
  content: "";
  position: absolute;
  top: 0.9rem;
  bottom: -2.25rem;
  width: 2px;
  background: linear-gradient(to bottom, var(--c-gold), rgba(232, 163, 61, 0.15));
}

.page-about .timeline-item:last-child .timeline-rail::before {
  display: none;
}

.page-about .timeline-dot {
  position: relative;
  display: block;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--c-gold);
  box-shadow: 0 0 0 4px rgba(232, 163, 61, 0.2);
  margin-top: 0.2rem;
  z-index: 1;
}

.page-about .timeline-title {
  font-family: var(--font-heading);
  font-size: var(--size-h3);
  color: var(--c-deep);
  margin: 0 0 0.35rem;
}

.page-about .timeline-summary {
  color: rgba(26, 26, 26, 0.78);
  font-size: var(--size-body);
  line-height: 1.7;
  margin: 0 0 0.6rem;
}

.page-about .timeline-more {
  font-family: var(--font-mono);
  font-size: var(--size-index);
  color: var(--c-deep);
  background: transparent;
  border: 1px solid rgba(11, 31, 58, 0.3);
  border-radius: 999px;
  padding: 0.3rem 0.85rem;
  cursor: pointer;
  letter-spacing: 0.06em;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.page-about .timeline-more:hover {
  background: var(--c-gold);
  border-color: var(--c-gold);
  color: var(--c-deep);
}

.page-about .about-timeline-detail {
  background: var(--c-paper);
  border: 1px solid rgba(11, 31, 58, 0.1);
  border-left: 3px solid var(--c-gold);
  border-radius: 4px;
  padding: 0.75rem 1rem;
  margin-top: 0.75rem;
  font-size: var(--size-caption);
  line-height: 1.7;
  color: rgba(26, 26, 26, 0.85);
}

.page-about .about-timeline-detail p {
  margin: 0;
}

/* ---------- QUALIFICATIONS ---------- */
.page-about .section--deep .section-heading .section-index {
  color: var(--c-gold);
}

.page-about .section--deep .section-heading .section-title {
  color: var(--c-paper);
}

.page-about .section--deep .section-heading .section-note {
  color: rgba(244, 241, 232, 0.7);
}

.page-about .about-qualification-layout {
  display: grid;
  gap: 2rem;
  margin-top: 2rem;
}

.page-about .qualification-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.page-about .qualification-card {
  perspective: 1200px;
  height: auto;
}

.page-about .qualification-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transition: transform 0.45s ease-in-out;
}

.page-about .qualification-card-face {
  position: relative;
  inset: auto;
  background: var(--c-paper);
  border-radius: var(--radius-card);
  border: 1px solid rgba(232, 163, 61, 0.45);
  box-shadow: 0 1px 0 var(--c-paper-gray), 0 4px 12px rgba(6, 18, 36, 0.25);
  padding: 1.5rem 1.25rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: 0.5rem;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

.page-about .qualification-back {
  margin-top: 0.75rem;
  background: rgba(232, 163, 61, 0.08);
  border-style: dashed;
  box-shadow: none;
}

.page-about .qualification-icon {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--c-deep);
  background: var(--c-gold);
  border-radius: 4px;
  padding: 0.25rem 0.6rem;
}

.page-about .qualification-title {
  font-family: var(--font-heading);
  font-size: var(--size-h3);
  color: var(--c-deep);
  margin: 0;
}

.page-about .qualification-code {
  font-family: var(--font-mono);
  font-size: var(--size-caption);
  color: rgba(26, 26, 26, 0.75);
  margin: 0;
  line-height: 1.6;
}

.page-about .qualification-back-label {
  font-family: var(--font-mono);
  font-size: var(--size-index);
  letter-spacing: 0.12em;
  color: var(--c-red);
  text-transform: uppercase;
}

.page-about .qualification-back p {
  color: rgba(26, 26, 26, 0.85);
  font-size: var(--size-caption);
  line-height: 1.7;
  margin: 0;
}

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

.page-about .about-qualification-media img {
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-card);
  border: 1px solid rgba(232, 163, 61, 0.35);
  max-height: 260px;
  object-position: center;
}

.page-about .about-qualification-media p {
  font-size: var(--size-caption);
  color: rgba(244, 241, 232, 0.7);
  line-height: 1.7;
  margin: 0;
}

.page-about .about-qualification-media .btn {
  align-self: flex-start;
}

/* ---------- ECOSYSTEM ---------- */
.page-about .about-ecosystem-layout {
  margin-top: 2rem;
}

.page-about .about-ecosystem-map {
  border: 1px solid rgba(232, 163, 61, 0.35);
  border-radius: var(--radius-card);
  overflow: hidden;
}

.page-about .about-ecosystem-aside {
  background: var(--c-paper-gray);
  border: 1px solid rgba(11, 31, 58, 0.1);
  border-radius: var(--radius-card);
  padding: 1.75rem 1.5rem;
  align-self: start;
}

.page-about .about-eco-title {
  font-family: var(--font-heading);
  font-size: var(--size-h3);
  color: var(--c-deep);
  margin: 1.25rem 0 0.5rem;
}

.page-about .about-eco-title:first-child {
  margin-top: 0;
}

.page-about .about-eco-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-eco-list li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 0;
  font-family: var(--font-mono);
  color: var(--c-deep);
  font-size: var(--size-caption);
  border-bottom: 1px dashed rgba(11, 31, 58, 0.12);
}

.page-about .about-legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex: none;
}

.page-about .about-legend-dot--dark {
  background: var(--c-deep);
}

.page-about .about-legend-dot--gold {
  background: var(--c-gold);
  box-shadow: 0 0 0 3px rgba(232, 163, 61, 0.2);
}

.page-about .about-legend-dot--red {
  background: var(--c-red);
}

.page-about .about-eco-text {
  color: rgba(26, 26, 26, 0.75);
  font-size: var(--size-caption);
  line-height: 1.7;
  margin: 0 0 1rem;
}

.page-about .about-eco-foot {
  margin-top: 1.75rem;
  text-align: center;
  font-size: var(--size-caption);
  color: rgba(26, 26, 26, 0.65);
  max-width: 60rem;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.8;
}

/* ---------- TEAM ---------- */
.page-about .about-team-section {
  background: var(--c-deep);
}

.page-about .about-team-section .section-heading .section-index {
  color: var(--c-gold);
}

.page-about .about-team-section .section-heading .section-title {
  color: var(--c-paper);
}

.page-about .about-team-section .section-heading .section-note {
  color: rgba(244, 241, 232, 0.65);
}

.page-about .about-team-chart {
  margin-top: 2rem;
  background: var(--c-deep-2);
  border: 1px solid rgba(232, 163, 61, 0.3);
  border-radius: var(--radius-card);
  padding: 0.5rem;
}

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

.page-about .about-team-grid {
  display: grid;
  gap: 1.25rem;
  margin-top: 2rem;
}

.page-about .about-team-cell {
  background: rgba(26, 58, 92, 0.6);
  border: 1px solid rgba(232, 163, 61, 0.3);
  border-radius: var(--radius-card);
  padding: 1.75rem;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.page-about .about-team-cell:hover,
.page-about .about-team-cell:focus-within {
  transform: translateY(-3px);
  border-color: var(--c-gold);
  background: rgba(26, 58, 92, 0.9);
}

.page-about .about-team-number {
  font-family: var(--font-mono);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--c-gold-light);
  line-height: 1;
}

.page-about .about-team-name {
  font-family: var(--font-heading);
  font-size: var(--size-h3);
  color: var(--c-paper);
  margin: 0.75rem 0 0.5rem;
}

.page-about .about-team-role {
  color: rgba(244, 241, 232, 0.8);
  font-size: var(--size-caption);
  line-height: 1.7;
  margin: 0;
}

.page-about .about-team-hint {
  display: block;
  color: rgba(232, 163, 61, 0.85);
  font-family: var(--font-mono);
  font-size: var(--size-index);
  line-height: 1.6;
  margin: 0.75rem 0 0;
  padding-top: 0.75rem;
  border-top: 1px dashed rgba(232, 163, 61, 0.35);
}

.page-about .about-team-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  margin-top: 2.5rem;
}

.page-about .about-team-cta .btn--outline {
  border-color: rgba(244, 241, 232, 0.6);
  color: var(--c-paper);
}

.page-about .about-team-cta .btn--outline:hover {
  background: rgba(244, 241, 232, 0.1);
  border-color: var(--c-gold);
  color: var(--c-gold-light);
}

/* ---------- DESKTOP ---------- */
@media (min-width: 768px) {
  .page-about .about-hero-media {
    height: 260px;
  }

  .page-about .about-hero-content {
    padding: 2rem 2.5rem 2.5rem;
  }

  .page-about .timeline-item {
    grid-template-columns: 88px 40px 1fr;
    gap: 0.5rem 1.5rem;
  }

  .page-about .timeline-year {
    grid-column: 1;
    grid-row: 1;
    text-align: right;
    font-size: 1.6rem;
    padding-top: 0.35rem;
  }

  .page-about .timeline-rail {
    grid-column: 2;
    grid-row: 1;
  }

  .page-about .timeline-content {
    grid-column: 3;
    grid-row: 1;
  }

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

  .page-about .about-team-hint {
    display: none;
  }

  .page-about .about-team-cell:hover .about-team-hint,
  .page-about .about-team-cell:focus-within .about-team-hint {
    display: block;
    animation: aboutTeamFade 0.2s ease;
  }
}

@media (min-width: 992px) {
  .page-about .about-qualification-layout {
    grid-template-columns: 1fr 340px;
    gap: 2.5rem;
  }

  .page-about .qualification-cards {
    grid-template-columns: repeat(3, 1fr);
    align-items: stretch;
  }

  .page-about .qualification-card {
    height: 230px;
  }

  .page-about .qualification-card-face {
    position: absolute;
    inset: 0;
  }

  .page-about .qualification-back {
    transform: rotateY(180deg);
    margin-top: 0;
    background: var(--c-paper-gray);
    border-style: solid;
    box-shadow: 0 1px 0 rgba(232, 163, 61, 0.3), 0 4px 12px rgba(6, 18, 36, 0.25);
  }

  .page-about .qualification-card:hover .qualification-card-inner,
  .page-about .qualification-card:focus-within .qualification-card-inner {
    transform: rotateY(180deg);
  }
}

@keyframes aboutTeamFade {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}