.page-about .about-crumb {
  padding: 20px 0 2px;
}

.page-about .about-open {
  padding: 14px 0 8px;
}

.page-about .about-open__frame {
  background: var(--paper);
}

.page-about .about-open__ver {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--coral);
}

.page-about .about-open__inner {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 26px 20px 32px;
}

.page-about .about-open h1 {
  margin: 0;
  max-width: 18ch;
  font-family: var(--font-sans);
  font-size: clamp(26px, 5.4vw, 44px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--blue-deep);
}

.page-about .about-open .lede {
  margin: 0;
  max-width: 58ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-about .about-open__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 4px;
}

.page-about .about-main {
  padding: 40px 0 24px;
}

.page-about .about-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}

.page-about .about-rail__title {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--muted);
  text-transform: uppercase;
}

.page-about .about-rail__list {
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 0 0 8px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-rail__item {
  flex: 0 0 auto;
}

.page-about .about-rail__link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 13.5px;
  color: var(--ink-soft);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 140ms ease, background-color 140ms ease, color 140ms ease;
}

.page-about .about-rail__link:hover,
.page-about .about-rail__link:focus-visible {
  border-color: var(--coral);
  background: var(--paper-alt);
  color: var(--blue-deep);
}

.page-about .about-rail__num {
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--coral);
}

.page-about .about-chapter {
  padding: 30px 0 34px;
  border-top: 1px solid var(--line);
  scroll-margin-top: calc(var(--bar-h) + 20px);
}

.page-about .about-chapter:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .about-chapter:target {
  background: linear-gradient(90deg, rgba(242, 100, 60, 0.07), rgba(242, 100, 60, 0) 62%);
}

.page-about .about-chapter__num {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--coral);
}

.page-about .about-chapter__title {
  margin: 0 0 14px;
  font-size: clamp(20px, 3.6vw, 28px);
  font-weight: 700;
  line-height: 1.32;
  letter-spacing: -0.01em;
  color: var(--blue-deep);
}

.page-about .about-chapter__lead {
  margin: 0 0 22px;
  max-width: 62ch;
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-about .about-chapter__note {
  margin: 22px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
  padding-left: 16px;
  border-left: 3px solid var(--green);
}

.page-about .about-points {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-points--stack {
  grid-template-columns: minmax(0, 1fr);
}

.page-about .about-point {
  padding: 16px 16px 18px;
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 150ms ease, box-shadow 150ms ease, transform 150ms ease;
}

.page-about .about-point:hover {
  border-color: var(--coral);
  box-shadow: var(--shadow-lift);
  transform: translateY(-2px);
}

.page-about .about-point__key {
  display: inline-block;
  margin-bottom: 10px;
  padding: 3px 8px;
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--blue-deep);
  background: var(--sand);
  border-radius: 3px;
}

.page-about .about-point p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink-soft);
}

.page-about .about-figure {
  margin: 6px 0 24px;
  padding: 0;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper-alt);
  object-fit: cover;
}

.page-about .about-figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--muted);
}

.page-about .about-timeline {
  margin: 4px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 22px 28px;
  border-left: 1px solid var(--line);
}

.page-about .about-timeline__item:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 5px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--line-strong);
  transition: border-color 150ms ease, background-color 150ms ease;
}

.page-about .about-timeline__item:hover::before {
  background: var(--coral);
  border-color: var(--coral);
}

.page-about .about-timeline__ver {
  margin: 0 0 4px;
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--coral);
}

.page-about .about-timeline__title {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  color: var(--blue-deep);
}

.page-about .about-timeline__text {
  margin: 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink-soft);
}

.page-about .about-ops {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
}

.page-about .about-ops__mark {
  margin: 0;
  padding: 0;
}

.page-about .about-ops__mark img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper-alt);
  object-fit: cover;
}

.page-about .about-ops__mark figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 14px;
  margin: 4px 0 0;
}

.page-about .about-stat {
  padding: 18px 16px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--sand);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: var(--paper-alt);
  transition: border-left-color 150ms ease;
}

.page-about .about-stat:hover {
  border-left-color: var(--coral);
}

.page-about .about-stat__num {
  margin: 0 0 6px;
  font-size: clamp(23px, 3.8vw, 32px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--blue-deep);
}

.page-about .about-stat__label {
  margin: 0;
  font-size: 13px;
  line-height: 1.55;
  color: var(--muted);
}

.page-about .about-reasons {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-reason {
  display: flex;
  gap: 12px;
  padding: 16px 16px 18px;
  border-left: 3px solid var(--green);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: var(--paper-alt);
  transition: border-left-color 150ms ease, background-color 150ms ease;
}

.page-about .about-reason:hover {
  border-left-color: var(--coral);
  background: var(--paper);
}

.page-about .about-reason__num {
  flex: 0 0 auto;
  padding-top: 2px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--coral);
}

.page-about .about-reason__body p {
  margin: 0;
}

.page-about .about-reason__title {
  margin: 0 0 4px;
  font-size: 15.5px;
  font-weight: 700;
  color: var(--blue-deep);
}

.page-about .about-reason__text {
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--ink-soft);
}

.page-about .about-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 34px;
  padding-top: 22px;
  border-top: 1px solid var(--line-strong);
}

.page-about .about-foot__back {
  margin-left: auto;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px dashed var(--line-strong);
  padding-bottom: 2px;
  transition: color 140ms ease, border-color 140ms ease;
}

.page-about .about-foot__back:hover,
.page-about .about-foot__back:focus-visible {
  color: var(--coral);
  border-color: var(--coral);
}

.page-about a:focus-visible {
  outline: 2px solid var(--coral);
  outline-offset: 2px;
  border-radius: 2px;
}

@media (min-width: 720px) {
  .page-about .about-open__inner {
    padding: 34px 32px 40px;
  }

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

  .page-about .about-ops {
    grid-template-columns: minmax(0, 1fr) 220px;
    align-items: start;
    gap: 32px;
  }
}

@media (min-width: 960px) {
  .page-about .about-layout {
    grid-template-columns: 208px minmax(0, 1fr);
    gap: 64px;
  }

  .page-about .about-rail__nav {
    position: sticky;
    top: calc(var(--bar-h) + 26px);
  }

  .page-about .about-rail__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
    border-left: 1px solid var(--line);
  }

  .page-about .about-rail__link {
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    margin-left: -1px;
    padding: 9px 14px;
    white-space: normal;
  }

  .page-about .about-rail__link:hover,
  .page-about .about-rail__link:focus-visible {
    border-left-color: var(--coral);
    background: var(--paper-alt);
  }

  .page-about .about-chapter {
    padding: 38px 0 44px;
  }

  .page-about .about-open__inner {
    padding: 42px 44px 48px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-point,
  .page-about .about-point:hover,
  .page-about .about-stat,
  .page-about .about-reason,
  .page-about .about-timeline__item::before,
  .page-about .about-rail__link,
  .page-about .about-foot__back {
    transition: none;
    transform: none;
  }
}