.page-about {
  position: relative;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 24px 20px 64px;
  background-color: var(--cream);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg' width='160' height='160' viewBox='0 0 160 160'%3E%3Cpath d='M0 80 Q40 40 80 80 T160 80' fill='none' stroke='%232d6a4f' stroke-opacity='.07' stroke-width='2'/%3E%3Cpath d='M0 120 Q40 80 80 120 T160 120' fill='none' stroke='%233b82f6' stroke-opacity='.05' stroke-width='2'/%3E%3Ccircle cx='80' cy='40' r='3' fill='%23f59e0b' fill-opacity='.14'/%3E%3C/svg%3E");
}

.page-about a {
  color: var(--green);
  text-decoration: none;
}

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

.page-about .breadcrumb {
  margin-bottom: 24px;
}

.page-about__layout {
  display: block;
}

.about-main {
  min-width: 0;
}

.about-aside {
  margin-bottom: 24px;
}

.about-aside__inner {
  border: 3px solid var(--deep-green);
  background: rgba(255, 255, 255, 0.85);
  padding: 16px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 16px;
  box-shadow: var(--shadow-hard);
}

.about-aside__label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--blue);
  font-weight: 700;
  text-transform: uppercase;
}

.about-aside__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
}

.about-aside__link {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--deep-green);
  display: inline-flex;
  gap: 6px;
  align-items: baseline;
}

.about-aside__link span {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--blue);
}

.about-aside__link:hover {
  color: var(--gold);
}

.about-aside__stat {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.about-aside__stat-label {
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--gray);
  text-transform: uppercase;
}

.about-aside__stat-num {
  font-family: var(--font-mono);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--green);
  line-height: 1;
}

.section-kicker {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--blue);
  font-weight: 700;
}

.page-about__layout .about-main > section:not(.about-hero) {
  padding-block: 44px;
  border-top: 3px solid var(--deep-green);
}

.about-hero {
  display: grid;
  gap: 20px;
  padding-bottom: 12px;
}

.about-hero__text {
  max-width: 720px;
}

.about-hero h1 {
  font-size: clamp(2rem, 5.5vw, 3.6rem);
  font-weight: 200;
  letter-spacing: -0.02em;
  line-height: 1.12;
  margin: 12px 0 16px;
  color: var(--deep-green);
}

.about-hero__lead {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--gray);
  max-width: 64ch;
  margin: 0 0 20px;
}

.about-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.about-hero__media {
  margin: 0;
  border: 3px solid var(--deep-green);
  box-shadow: var(--shadow-hard);
}

.about-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.about-origin__header,
.about-timeline__header,
.about-tech__header,
.about-qualifications__header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 10px;
}

.about-origin__id,
.about-timeline__id,
.about-tech__id,
.about-qualifications__id {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--gold);
  border: 2px solid var(--gold);
  padding: 2px 8px;
  letter-spacing: 0.08em;
}

.about-origin h2,
.about-timeline h2,
.about-tech h2,
.about-qualifications h2,
.about-links h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 300;
  letter-spacing: -0.01em;
  margin: 0 0 16px;
  color: var(--deep-green);
}

.about-origin__body p {
  margin: 0 0 12px;
  line-height: 1.7;
  color: var(--deep-green);
  max-width: 70ch;
}

.about-origin__more {
  margin-top: 16px;
  border-top: 2px solid var(--light-green);
  padding-top: 12px;
  max-width: 70ch;
}

.about-origin__more summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--blue);
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

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

.about-origin__more summary::after {
  content: '+';
  font-family: var(--font-mono);
  font-weight: 700;
}

.about-origin__more[open] summary::after {
  content: '–';
}

.about-origin__more p {
  margin: 12px 0 0;
  line-height: 1.7;
}

.about-origin__aside {
  margin-top: 24px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.origin-stat {
  border: 2px solid var(--light-green);
  background: #fff;
  padding: 16px 12px;
  text-align: center;
}

.origin-stat strong {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--green);
  line-height: 1.1;
}

.origin-stat span {
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  color: var(--gray);
}

.timeline-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 20px 0 28px;
}

.timeline-filter__item {
  display: inline-block;
  padding: 6px 14px;
  border: 2px solid var(--green);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--green);
  text-decoration: none;
  background: transparent;
}

.timeline-filter__item:hover {
  background: var(--green);
  color: var(--cream);
}

.timeline-filter__item.is-all {
  background: var(--green);
  color: var(--cream);
}

.timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 24px;
  position: relative;
  border-left: 4px solid var(--light-green);
}

.timeline-item {
  position: relative;
  padding-bottom: 32px;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -33px;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--cream);
  border: 4px solid var(--green);
  box-sizing: border-box;
}

.timeline-item--mid::before {
  border-color: var(--blue);
}

.timeline-item--recent::before {
  border-color: var(--gold);
}

.timeline-item__year {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--green);
  line-height: 1.1;
  margin-bottom: 8px;
}

.timeline-item__body {
  border: 2px solid transparent;
  padding: 12px 14px;
  transition: border-color 0.2s, background 0.2s, box-shadow 0.2s, transform 0.2s;
}

.timeline-item:hover .timeline-item__body {
  border-color: var(--gold);
  background: #fff;
  box-shadow: var(--shadow-hard);
  transform: translateX(4px);
}

.timeline-item__tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  background: var(--light-green);
  color: var(--green);
  padding: 2px 8px;
  margin-bottom: 6px;
}

.timeline-item--mid .timeline-item__tag {
  background: #dbeafe;
  color: var(--blue);
}

.timeline-item--recent .timeline-item__tag {
  background: #fef3c7;
  color: #b45309;
}

.timeline-item__body h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0 0 6px;
  color: var(--deep-green);
}

.timeline-item__body p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--gray);
  max-width: 72ch;
}

.about-tech__main {
  margin-top: 20px;
  display: grid;
  gap: 24px;
}

.about-tech__content p {
  line-height: 1.7;
  color: var(--deep-green);
  max-width: 70ch;
}

.about-tech__list {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.about-tech__list li {
  padding-left: 28px;
  position: relative;
  margin-bottom: 10px;
  line-height: 1.6;
  color: var(--deep-green);
}

.about-tech__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 12px;
  height: 12px;
  border: 3px solid var(--blue);
  border-radius: 50%;
  background: var(--cream);
}

.about-tech__media {
  margin: 0;
  border: 3px solid var(--deep-green);
  box-shadow: var(--shadow-hard);
}

.about-tech__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.about-tech__stats {
  margin-top: 28px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 4px solid var(--deep-green);
  border-left: 4px solid var(--deep-green);
}

.about-tech__stat {
  padding: 18px 14px;
  border-right: 4px solid var(--deep-green);
  border-bottom: 4px solid var(--deep-green);
  background: rgba(255, 255, 255, 0.9);
}

.about-tech__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--green);
  line-height: 1.1;
}

.about-tech__stat:nth-child(2) .about-tech__num {
  color: var(--blue);
}

.about-tech__stat:nth-child(3) .about-tech__num {
  color: var(--teal);
}

.about-tech__stat:nth-child(4) .about-tech__num {
  color: var(--gold);
}

.about-tech__label {
  display: block;
  margin-top: 6px;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--gray);
  text-transform: uppercase;
}

.about-qualifications__lead {
  max-width: 70ch;
  line-height: 1.7;
  margin: 0 0 24px;
  color: var(--deep-green);
}

.about-qualifications__grid {
  display: grid;
  gap: 16px;
}

.about-qualifications__card {
  position: relative;
  border: 3px solid var(--deep-green);
  background: #fff;
  padding: 28px 20px 20px;
  box-shadow: var(--shadow-hard);
}

.qualification-card__badge {
  position: absolute;
  top: -14px;
  left: 16px;
  background: var(--blue);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 4px 10px;
  border: 2px solid var(--deep-green);
}

.about-qualifications__card:nth-child(2) .qualification-card__badge {
  background: var(--gold);
  color: var(--deep-green);
}

.about-qualifications__card h3 {
  font-size: 1.05rem;
  margin: 0 0 8px;
  color: var(--deep-green);
}

.about-qualifications__card p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--gray);
}

.about-partners {
  margin-top: 24px;
  border: 2px dashed var(--green);
  background: var(--light-green);
  padding: 20px;
}

.about-partners h3 {
  margin: 0 0 8px;
  font-size: 1rem;
  color: var(--deep-green);
}

.about-partners p {
  margin: 0 0 16px;
  line-height: 1.65;
  font-size: 0.95rem;
  color: var(--deep-green);
}

.about-qualifications__media {
  margin: 24px 0 0;
  max-width: 300px;
  border: 3px solid var(--deep-green);
  box-shadow: var(--shadow-hard);
}

.about-qualifications__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.about-links__lead {
  color: var(--gray);
  max-width: 70ch;
  line-height: 1.7;
}

.about-links__grid {
  margin-top: 24px;
  display: grid;
  gap: 16px;
}

.about-links__card {
  display: block;
  border: 3px solid var(--deep-green);
  background: #fff;
  padding: 20px;
  color: var(--deep-green);
  text-decoration: none;
  position: relative;
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
}

.about-links__card:hover {
  transform: translate(-3px, -3px);
  box-shadow: var(--shadow-hard);
  border-color: var(--gold);
}

.about-links__index {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--blue);
}

.about-links__card h3 {
  font-size: 1.05rem;
  margin: 8px 0 4px;
  color: var(--deep-green);
}

.about-links__card p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--gray);
  line-height: 1.55;
}

@media (min-width: 600px) {
  .about-links__grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

@media (min-width: 768px) {
  .about-tech__main {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }

  .timeline {
    padding-left: 28px;
  }

  .timeline-item {
    display: grid;
    grid-template-columns: 150px 1fr;
    gap: 24px;
  }

  .timeline-item__year {
    margin-bottom: 0;
    text-align: right;
  }

  .timeline-item::before {
    left: -37px;
  }
}

@media (min-width: 1024px) {
  .page-about {
    padding: 40px 48px 96px;
  }

  .page-about__layout {
    display: grid;
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

  .about-aside {
    position: sticky;
    top: calc(var(--header-h) + 32px);
    margin-bottom: 0;
  }

  .about-aside__inner {
    display: block;
  }

  .about-aside__list {
    display: block;
    margin-top: 18px;
  }

  .about-aside__item {
    border-bottom: 2px solid var(--light-green);
  }

  .about-aside__link {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    padding: 12px 0;
  }

  .about-aside__stat {
    margin-top: 20px;
    border-top: 3px solid var(--deep-green);
    padding-top: 16px;
    display: block;
  }

  .about-aside__stat-num {
    font-size: 2.2rem;
  }

  .about-aside__cta {
    display: block;
    text-align: center;
    margin-top: 20px;
  }

  .page-about__layout .about-main > section:not(.about-hero) {
    padding-block: 64px;
  }

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

  .about-links__card:last-child {
    grid-column: span 2;
  }
}