.page-about {
  position: relative;
  background-color: var(--color-bg);
  color: var(--color-text);
  overflow: clip;
}

.page-about .breadcrumb {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--space-5) var(--space-4) 0;
}

.page-about .page-header {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--space-6) var(--space-4) var(--space-5);
  position: relative;
}

.page-about .page-header::before {
  content: '';
  position: absolute;
  inset-inline: var(--space-4);
  top: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-green) 0%, var(--color-grid) 60%, var(--color-blue) 100%);
}

.page-about .page-header__index {
  font-family: var(--font-data);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--color-blue);
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}

.page-about .page-header__title {
  font-family: var(--font-head);
  font-size: clamp(2rem, 5vw, 3.5rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0 0 var(--space-3);
  max-width: 13em;
}

.page-about .page-header__desc {
  color: var(--color-text-dim);
  max-width: 48em;
  font-size: 1.05rem;
  margin: 0;
}

.page-about .page-header__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
  margin: var(--space-5) 0 0;
  padding: var(--space-4) 0 0;
  border-top: 1px solid var(--color-grid);
}

.page-about .about-stat {
  background: linear-gradient(135deg, var(--color-panel) 0%, var(--color-elevated) 100%);
  border: 1px solid var(--color-grid);
  padding: var(--space-3);
  margin: 0;
}

.page-about .about-stat__label {
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--color-text-dim);
  text-transform: uppercase;
  margin: 0;
}

.page-about .about-stat__num {
  font-family: var(--font-data);
  font-size: 2rem;
  color: var(--color-gold);
  line-height: 1.1;
  margin-top: var(--space-1);
}

.page-about .about-jump {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-3);
  max-width: var(--container-max);
  margin: 0 auto var(--space-4);
  padding-inline: var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-grid);
}

.page-about .about-jump a {
  color: var(--color-text-dim);
  text-decoration: none;
  border: 1px solid var(--color-grid);
  padding: 0.35rem 0.7rem;
  font-family: var(--font-data);
  font-size: 0.8rem;
  transition: color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
}

.page-about .about-jump a:hover,
.page-about .about-jump a:focus-visible {
  color: var(--color-green);
  border-color: var(--color-green);
  background: rgba(0, 166, 81, 0.08);
}

.page-about .section {
  padding-block: var(--space-7);
  border-top: 1px solid var(--color-grid);
}

.page-about .section__header {
  margin-bottom: var(--space-5);
  max-width: 700px;
}

.page-about .section__index {
  font-family: var(--font-data);
  color: var(--color-green);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 0 0 var(--space-2);
}

.page-about .section__title {
  font-family: var(--font-head);
  font-size: 1.75rem;
  line-height: 1.2;
  margin: 0;
}

.page-about .section__header p {
  color: var(--color-text-dim);
  margin: var(--space-3) 0 0;
}

.page-about .about-ideology {
  display: grid;
  gap: var(--space-5);
}

.page-about .about-ideology__lead {
  font-family: var(--font-head);
  font-size: 1.4rem;
  line-height: 1.3;
  color: var(--color-text);
  border-left: 3px solid var(--color-gold);
  padding-left: var(--space-3);
  margin: var(--space-4) 0;
}

.page-about .about-ideology__text > p {
  color: var(--color-text-dim);
  margin: var(--space-3) 0;
}

.page-about .about-principles__list {
  list-style: none;
  margin: var(--space-5) 0 0;
  padding: 0;
  display: grid;
  gap: var(--space-4);
}

.page-about .about-principles__item {
  background: var(--color-panel);
  border: 1px solid var(--color-grid);
  padding: var(--space-4);
  position: relative;
  transition: border-color var(--transition-fast);
}

.page-about .about-principles__item:hover {
  border-color: var(--color-blue);
}

.page-about .about-principles__code {
  font-family: var(--font-data);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--color-blue);
}

.page-about .about-principles__item h3 {
  margin: var(--space-2) 0 var(--space-1);
  font-size: 1rem;
}

.page-about .about-principles__item p {
  margin: 0;
  color: var(--color-text-dim);
}

.page-about .about-ideology__figure,
.page-about .about-timeline__figure,
.page-about .about-org__figure {
  margin: 0;
  border: 1px solid var(--color-grid);
  background: var(--color-panel);
}

.page-about .about-ideology__figure img,
.page-about .about-timeline__figure img,
.page-about .about-org__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .about-ideology__figure figcaption,
.page-about .about-timeline__figure figcaption,
.page-about .about-org__figure figcaption {
  padding: var(--space-3);
  font-family: var(--font-data);
  font-size: 0.75rem;
  color: var(--color-text-dim);
  border-top: 1px solid var(--color-grid);
  background: var(--color-panel);
}

.page-about .section--timeline {
  background: linear-gradient(180deg, var(--color-panel) 0%, var(--color-bg) 100%);
}

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

.page-about .about-timeline__list::before {
  content: '';
  position: absolute;
  top: 8px;
  bottom: 8px;
  left: 7px;
  width: 2px;
  background: var(--color-green);
  opacity: 0.4;
}

.page-about .about-timeline__item {
  position: relative;
  padding-left: 32px;
  margin-bottom: var(--space-5);
}

.page-about .about-timeline__item:last-child {
  margin-bottom: 0;
}

.page-about .about-timeline__marker {
  position: absolute;
  left: 0;
  top: 6px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--color-bg);
  border: 2px solid var(--color-green);
  box-sizing: border-box;
}

.page-about .about-timeline__dot {
  position: absolute;
  inset: 3px;
  border-radius: 50%;
  background: var(--color-gold);
  transition: box-shadow var(--transition-fast);
}

.page-about .about-timeline__item:hover .about-timeline__dot,
.page-about .about-timeline__item:focus-within .about-timeline__dot {
  box-shadow: 0 0 0 4px rgba(255, 215, 0, 0.15);
}

.page-about .about-timeline__item:hover .about-timeline__panel {
  border-color: var(--color-gold);
}

.page-about .about-timeline__panel {
  background: var(--color-elevated);
  border: 1px solid var(--color-grid);
  padding: var(--space-4);
  transition: border-color var(--transition-fast);
}

.page-about .about-timeline__meta {
  display: flex;
  justify-content: space-between;
  gap: var(--space-3);
  font-family: var(--font-data);
  font-size: 0.7rem;
  color: var(--color-blue);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-2);
}

.page-about .about-timeline__tag {
  color: var(--color-text-dim);
}

.page-about .about-timeline__title {
  margin: 0 0 var(--space-2);
  font-size: 1.3rem;
}

.page-about .about-timeline__desc {
  margin: 0;
  color: var(--color-text-dim);
}

.page-about .about-timeline__figure {
  margin-top: var(--space-6);
}

.page-about .section--org {
  background: var(--color-bg);
}

.page-about .about-org {
  margin: 0 0 var(--space-5);
}

.page-about .about-org__root {
  display: block;
  width: max-content;
  max-width: 100%;
  background: var(--color-elevated);
  border: 1px solid var(--color-green);
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-head);
  font-size: 1rem;
  color: var(--color-green);
  margin: 0 auto;
  text-align: center;
  position: relative;
}

.page-about .about-org__root::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  height: var(--space-4);
  border-left: 2px solid var(--color-grid);
}

.page-about .about-org__branches {
  position: relative;
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.page-about .about-org__branch {
  background: var(--color-panel);
  border: 1px solid var(--color-grid);
  padding: var(--space-4);
  position: relative;
  text-align: center;
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.page-about .about-org__branch:hover,
.page-about .about-org__branch:focus-within {
  border-color: var(--color-blue);
  transform: translateY(-2px);
}

.page-about .about-org__branch-head {
  font-family: var(--font-data);
  font-size: 1.1rem;
  color: var(--color-blue);
  margin: 0 0 var(--space-3);
}

.page-about .about-org__branch-list {
  list-style: none;
  margin: 0;
  padding: 0;
  color: var(--color-text-dim);
}

.page-about .about-org__branch-list li + li {
  margin-top: var(--space-2);
}

.page-about .about-org__figure {
  margin-top: var(--space-4);
}

.page-about .section--trust {
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-panel) 100%);
}

.page-about .about-quality__grid {
  display: grid;
  gap: var(--space-3);
}

.page-about .about-quality__item {
  background: var(--color-panel);
  border: 1px solid var(--color-grid);
  padding: var(--space-4);
  position: relative;
  padding-left: var(--space-5);
  transition: border-color var(--transition-fast);
}

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

.page-about .about-quality__mark {
  font-family: var(--font-data);
  font-size: 0.7rem;
  color: var(--color-gold);
  display: block;
  margin-bottom: var(--space-2);
}

.page-about .about-quality__item h3 {
  margin: 0 0 var(--space-1);
  font-size: 1rem;
}

.page-about .about-quality__item p {
  margin: 0;
  color: var(--color-text-dim);
}

.page-about .section--connect {
  background: var(--color-bg);
}

.page-about .about-connect {
  display: grid;
  gap: var(--space-5);
}

.page-about .about-connect__info p {
  color: var(--color-text-dim);
  margin: var(--space-3) 0 0;
}

.page-about .about-connect__list {
  display: grid;
  gap: var(--space-2);
  margin: 0;
  padding: 0;
}

.page-about .about-connect__list div {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-3);
  border-bottom: 1px solid var(--color-grid);
  padding: var(--space-2) 0;
}

.page-about .about-connect__list dt {
  color: var(--color-text-dim);
  min-width: 7em;
}

.page-about .about-connect__list dd {
  margin: 0;
  font-family: var(--font-data);
  word-break: break-word;
}

.page-about .about-connect__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.page-about .about-next {
  border-top: 1px solid var(--color-grid);
  border-bottom: 1px solid var(--color-grid);
  padding: var(--space-5) var(--space-4);
  margin: 0 auto var(--space-6);
  max-width: var(--container-max);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-3);
}

.page-about .about-next__label {
  font-family: var(--font-data);
  color: var(--color-text-dim);
  letter-spacing: 0.1em;
  font-size: 0.75rem;
  text-transform: uppercase;
}

.page-about .about-next__link {
  font-family: var(--font-head);
  color: var(--color-green);
  text-decoration: none;
  font-size: 1.1rem;
  transition: color var(--transition-fast);
}

.page-about .about-next__link:hover,
.page-about .about-next__link:focus-visible {
  color: var(--color-gold);
}

@media (min-width: 768px) {
  .page-about .page-header__stats {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .about-ideology {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }

  .page-about .about-ideology__figure {
    margin-top: 0;
  }

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

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

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

@media (min-width: 1000px) {
  .page-about .about-rail {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-5);
    position: fixed;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    font-family: var(--font-data);
    font-size: 0.65rem;
    letter-spacing: 0.12em;
    color: var(--color-text-dim);
    writing-mode: vertical-rl;
    z-index: 2;
    pointer-events: none;
  }

  .page-about .about-rail__title {
    color: var(--color-green);
    letter-spacing: 0.2em;
  }

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

  .page-about .about-org__branches {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-4);
  }

  .page-about .about-org__branches::before {
    content: '';
    position: absolute;
    top: 0;
    left: 10%;
    right: 10%;
    height: 2px;
    background: var(--color-grid);
  }

  .page-about .about-org__branch::before {
    content: '';
    position: absolute;
    top: -16px;
    left: 50%;
    height: 16px;
    border-left: 2px solid var(--color-grid);
  }

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