.page-about {
  background: var(--light);
  color: var(--text);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-about .section-kicker {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
  margin: 0 0 8px;
}

.page-about h2 {
  font-family: var(--font-display);
  font-size: clamp(26px, 4vw, 34px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0 0 16px;
}

.page-about h2::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 0.85em;
  background: var(--gold);
  margin-right: 12px;
  vertical-align: -0.06em;
}

.page-about h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  line-height: 1.3;
  margin: 0 0 8px;
}

.page-about p {
  line-height: 1.75;
  margin: 0 0 12px;
}

.page-about .container-x {
  max-width: var(--container-w);
  margin: 0 auto;
}

.page-about .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  margin-bottom: 28px;
}

.page-about .breadcrumbs a {
  color: rgba(244, 247, 250, 0.6);
  text-decoration: none;
  transition: color 0.2s var(--ease-out);
}

.page-about .breadcrumbs a:hover {
  color: var(--gold);
}

.page-about .breadcrumbs span[aria-current="page"] {
  color: var(--gold);
}

.page-about .btn {
  display: inline-block;
  padding: 14px 28px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 0.2s var(--ease-out), border-color 0.2s var(--ease-out), color 0.2s var(--ease-out);
}

.page-about .btn-gold {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--deep);
}

.page-about .btn-gold:hover {
  background: transparent;
  color: var(--gold);
}

.page-about .btn-outline {
  background: transparent;
  border-color: currentColor;
  color: var(--gold);
}

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

.page-about .about-hero {
  background:
    radial-gradient(1000px 360px at 88% -10%, rgba(212, 169, 55, 0.14), transparent 60%),
    linear-gradient(135deg, var(--deep) 0%, var(--navy) 100%);
  color: rgba(244, 247, 250, 0.9);
  position: relative;
  padding: 48px 0 64px;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 42%;
  height: 4px;
  background: var(--gold);
}

.page-about .about-hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 40px;
  align-items: end;
}

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

.page-about .about-hero-kicker {
  color: var(--gold);
  font-size: 14px;
}

.page-about .about-hero-title {
  font-family: var(--font-display);
  font-size: clamp(36px, 6vw, 56px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--white);
  margin: 0 0 20px;
}

.page-about .about-hero-desc {
  font-size: 17px;
  line-height: 1.75;
  color: rgba(244, 247, 250, 0.75);
  margin: 0 0 28px;
  max-width: 600px;
}

.page-about .about-hero-cta {
  border-color: var(--gold);
}

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

.page-about .about-hero-stat {
  padding: 20px 18px;
  border: 1px solid rgba(212, 169, 55, 0.28);
  background: rgba(19, 34, 51, 0.55);
  min-width: 0;
}

.page-about .about-hero-stat:nth-child(even) {
  border-left: 0;
}

.page-about .about-hero-stat:nth-child(n + 3) {
  border-top: 0;
}

.page-about .about-hero-stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(24px, 4vw, 34px);
  font-weight: 500;
  line-height: 1.1;
  color: var(--gold);
  margin-bottom: 6px;
}

.page-about .about-hero-stat-label {
  display: block;
  font-size: 13px;
  color: rgba(244, 247, 250, 0.65);
}

.page-about .about-origin {
  background: var(--light);
  padding: 72px 0 80px;
}

.page-about .about-origin-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
}

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

.page-about .about-origin-quote {
  border-left: 3px solid var(--gold);
  padding: 4px 0 4px 20px;
  margin: 24px 0 0;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 500;
  line-height: 1.5;
  color: var(--text);
  background: transparent;
}

.page-about .about-origin-figure,
.page-about .about-team-figure,
.page-about .about-cred-figure {
  margin: 0;
  border: 1px solid var(--border);
  background: var(--white);
  box-shadow: var(--shadow);
}

.page-about .about-origin-figure img,
.page-about .about-team-figure img,
.page-about .about-cred-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about figure figcaption {
  padding: 10px 14px;
  font-size: 13px;
  color: var(--text-sec);
  border-top: 1px solid var(--border);
  line-height: 1.5;
}

.page-about .about-values-aside {
  background: var(--white);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 28px 24px;
}

.page-about .about-values-list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-about .about-values-list li {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 16px 0;
  border-top: 1px solid var(--border);
}

.page-about .about-values-list li:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .about-values-num {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 500;
  color: var(--gold);
  line-height: 1;
  margin-top: 2px;
}

.page-about .about-values-list h3 {
  font-size: 17px;
  margin-bottom: 4px;
}

.page-about .about-values-list p {
  font-size: 14px;
  color: var(--text-sec);
  margin: 0;
  line-height: 1.6;
}

.page-about .about-versions {
  background-color: var(--navy);
  background-image: repeating-linear-gradient(45deg, rgba(255, 255, 255, 0.02) 0 2px, transparent 2px 8px);
  color: rgba(244, 247, 250, 0.9);
  padding: 72px 0 88px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 48px), 0 100%);
}

.page-about .about-section-head {
  margin-bottom: 40px;
}

.page-about .about-section-desc {
  font-size: 16px;
  line-height: 1.7;
  max-width: 680px;
  margin: 0;
}

.page-about .about-versions .about-section-head {
  max-width: 720px;
}

.page-about .about-versions .about-section-desc {
  color: rgba(244, 247, 250, 0.7);
}

.page-about .about-timeline {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  margin-top: 48px;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--gold);
  opacity: 0.4;
}

.page-about .about-milestone {
  position: relative;
  padding-left: 44px;
}

.page-about .about-milestone::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 24px;
  width: 10px;
  height: 10px;
  background: var(--gold);
  border: 2px solid var(--navy);
  box-shadow: 0 0 0 2px rgba(212, 169, 55, 0.4);
}

.page-about .about-milestone-head {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  list-style: none;
  cursor: pointer;
  padding: 18px 18px 18px 22px;
  background: var(--deep);
  border: 1px solid rgba(212, 169, 55, 0.38);
  border-left: 3px solid var(--gold);
  transition: border-color 0.2s var(--ease-out), background-color 0.2s var(--ease-out);
}

.page-about .about-milestone-head::-webkit-details-marker {
  display: none;
}

.page-about .about-milestone-head:hover {
  background: rgba(212, 169, 55, 0.08);
  border-color: var(--gold);
}

.page-about .about-milestone-version {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 600;
  color: var(--gold);
  border: 1px solid var(--gold);
  padding: 3px 10px;
  background: rgba(212, 169, 55, 0.08);
}

.page-about .about-milestone-meta {
  flex: 1;
  min-width: 120px;
  font-size: 14px;
  color: rgba(244, 247, 250, 0.75);
}

.page-about .about-milestone-toggle {
  flex: 0 0 auto;
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(244, 247, 250, 0.35);
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--gold);
  transition: all 0.2s var(--ease-out);
}

.page-about .about-milestone[open] .about-milestone-toggle {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--deep);
}

.page-about .about-milestone-body {
  padding: 20px 22px 24px;
  background: rgba(11, 22, 38, 0.65);
  border: 1px solid rgba(212, 169, 55, 0.28);
  border-top: 0;
}

.page-about .about-milestone-body h3 {
  color: var(--white);
  margin-bottom: 10px;
}

.page-about .about-milestone-body p {
  font-size: 15px;
  line-height: 1.7;
  color: rgba(244, 247, 250, 0.78);
  margin-bottom: 14px;
}

.page-about .about-milestone-tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .about-milestone-tag {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--neon);
  padding: 3px 10px;
  border: 1px solid rgba(57, 255, 20, 0.35);
  background: rgba(57, 255, 20, 0.06);
}

.page-about .about-principles {
  background: var(--light);
  padding: 80px 0 88px;
}

.page-about .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 28px 0 32px;
}

.page-about .filter-btn {
  border: 1px solid var(--border);
  background: var(--white);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  padding: 10px 20px;
  cursor: pointer;
  transition: background-color 0.2s var(--ease-out), border-color 0.2s var(--ease-out), color 0.2s var(--ease-out);
}

.page-about .filter-btn:hover {
  border-color: var(--gold);
}

.page-about .filter-btn[aria-pressed="true"] {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--deep);
  font-weight: 600;
}

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

.page-about .about-principle-card {
  background: var(--white);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 28px 24px 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  position: relative;
}

.page-about .about-principle-card::after {
  content: "";
  display: block;
  width: 48px;
  height: 3px;
  background: var(--gold);
  margin-top: auto;
}

.page-about .about-principle-card p {
  font-size: 15px;
  color: var(--text-sec);
  margin: 0;
  flex: 1;
}

.page-about .about-principle-card h3 {
  margin-bottom: 0;
}

.page-about .about-principle-num {
  font-family: var(--font-mono);
  font-size: 34px;
  font-weight: 500;
  line-height: 1.05;
  color: var(--text);
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-top: 6px;
}

.page-about .about-principle-num span {
  font-size: 14px;
  color: var(--text-sec);
}

.page-about .about-team {
  background: var(--light);
  padding: 0 0 88px;
}

.page-about .about-team-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 40px;
  align-items: center;
}

.page-about .about-team-copy {
  max-width: 680px;
}

.page-about .about-team-copy p {
  color: var(--text-sec);
}

.page-about .about-team-list {
  list-style: none;
  padding: 0;
  margin: 0 0 32px;
  display: grid;
  gap: 0;
}

.page-about .about-team-list li {
  position: relative;
  padding: 14px 0 14px 22px;
  border-top: 1px solid var(--border);
  font-size: 15px;
  line-height: 1.65;
}

.page-about .about-team-list li:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .about-team-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 24px;
  width: 8px;
  height: 8px;
  border: 2px solid var(--gold);
  background: var(--white);
}

.page-about .about-team-list strong {
  color: var(--text);
  font-weight: 600;
}

.page-about .about-cred {
  background: var(--white);
  padding: 80px 0 88px;
}

.page-about .about-cred-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  margin-bottom: 36px;
}

.page-about .about-cred-card {
  background: var(--light);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 28px 24px;
  position: relative;
}

.page-about .about-cred-icon {
  width: 64px;
  height: 64px;
  display: grid;
  place-items: center;
  border: 2px solid var(--gold);
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--gold);
  background: rgba(212, 169, 55, 0.06);
  margin-bottom: 20px;
}

.page-about .about-cred-card h3 {
  font-size: 18px;
  margin-bottom: 10px;
}

.page-about .about-cred-card p {
  font-size: 14px;
  color: var(--text-sec);
  margin: 0;
}

.page-about .about-cta {
  background:
    radial-gradient(700px 300px at 85% 20%, rgba(212, 169, 55, 0.12), transparent 60%),
    var(--deep);
  color: rgba(244, 247, 250, 0.85);
  padding: 72px 0 96px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 48px), 0 100%);
}

.page-about .about-cta-inner {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.page-about .about-cta h2 {
  color: var(--white);
  max-width: 640px;
}

.page-about .about-cta p {
  color: rgba(244, 247, 250, 0.7);
  max-width: 560px;
}

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

.page-about .about-cta .btn-outline {
  border-color: rgba(244, 247, 250, 0.5);
  color: var(--white);
}

.page-about .about-cta .btn-outline:hover {
  border-color: var(--gold);
  background: var(--gold);
  color: var(--deep);
}

@media (min-width: 640px) {
  .page-about .about-principle-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-about .about-cta-inner {
    flex-direction: row;
    align-items: flex-end;
    justify-content: space-between;
  }

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

@media (min-width: 768px) {
  .page-about .about-hero {
    padding: 56px 0 80px;
  }

  .page-about .about-hero-inner {
    grid-template-columns: minmax(0, 1fr) minmax(280px, 380px);
    gap: 48px;
  }

  .page-about .about-hero-stat {
    padding: 24px 20px;
  }

  .page-about .about-origin {
    padding: 88px 0 96px;
  }

  .page-about .about-versions {
    padding: 88px 0 104px;
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - 64px), 0 100%);
  }

  .page-about .about-milestone-head {
    flex-wrap: nowrap;
    padding: 20px 22px 20px 26px;
  }

  .page-about .about-team-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
    gap: 56px;
  }

  .page-about .about-cta {
    padding: 84px 0 112px;
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - 64px), 0 100%);
  }
}

@media (min-width: 1024px) {
  .page-about .about-origin-grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
    grid-template-areas:
      "copy aside"
      "figure aside";
    gap: 44px 64px;
    align-items: start;
  }

  .page-about .about-origin-copy {
    grid-area: copy;
  }

  .page-about .about-origin-figure {
    grid-area: figure;
  }

  .page-about .about-values-aside {
    grid-area: aside;
    position: sticky;
    top: 32px;
  }

  .page-about .about-timeline {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 32px 48px;
  }

  .page-about .about-timeline::before {
    left: 50%;
    transform: translateX(-50%);
  }

  .page-about .about-milestone {
    width: 100%;
    padding-left: 0;
  }

  .page-about .about-milestone:nth-child(even) {
    grid-column: 2;
  }

  .page-about .about-milestone:nth-child(odd) {
    grid-column: 1;
  }

  .page-about .about-milestone::before {
    left: auto;
    right: -24px;
  }

  .page-about .about-milestone:nth-child(even)::before {
    right: auto;
    left: -24px;
  }

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

  .page-about .about-cred {
    padding: 96px 0 104px;
  }

  .page-about .about-cred-grid {
    gap: 32px;
  }
}