.page-about {
  --about-deep-panel: rgba(8, 22, 42, 0.7);
}

.page-about .page-about__head {
  border-bottom: 1px solid var(--border-line);
  padding-bottom: 28px;
  margin-bottom: 8px;
}

.page-about .page-about__head .page-head__kicker {
  color: var(--accent-cyan);
}

.page-about .page-about__head .page-head__desc {
  max-width: 70ch;
}

.page-about .page-about__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 28px 0 8px;
}

.page-about .page-about__stat {
  border: 1px solid var(--border-line);
  border-left: 3px solid var(--accent-orange);
  background: var(--bg-deep);
  padding: 16px 14px;
  min-width: 0;
}

.page-about .page-about__stat:nth-child(even) {
  border-left-color: var(--accent-cyan);
}

.page-about .page-about__stat-value {
  display: block;
  font-family: var(--font-data);
  font-size: clamp(20px, 4vw, 28px);
  color: var(--text-primary);
  line-height: 1.2;
}

.page-about .page-about__stat-label {
  display: block;
  margin-top: 6px;
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 1.5;
}

.page-about .about-layout {
  margin-top: 36px;
}

.page-about .about-rail {
  border: 1px solid var(--border-line);
  background: var(--bg-deep);
  padding: 20px;
}

.page-about .about-rail__title {
  margin: 0 0 14px;
  font-family: var(--font-heading);
  font-size: 14px;
  letter-spacing: 0.08em;
  display: flex;
  justify-content: space-between;
  gap: 10px;
  color: var(--text-primary);
}

.page-about .about-rail__title span {
  font-family: var(--font-data);
  font-size: 11px;
  color: var(--accent-cyan);
  letter-spacing: 0.02em;
}

.page-about .about-rail__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  gap: 10px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

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

.page-about .about-rail__item::before {
  display: none;
}

.page-about .about-rail__link {
  display: flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--border-line);
  padding: 8px 12px;
  color: var(--text-secondary);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 0.3s var(--ease), color 0.3s var(--ease);
}

.page-about .about-rail__link:hover {
  border-color: var(--accent-orange);
  color: var(--text-primary);
}

.page-about .about-rail__index {
  font-family: var(--font-data);
  font-size: 11px;
  color: var(--accent-cyan);
}

.page-about .about-rail__year {
  font-family: var(--font-data);
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
}

.page-about .about-rail__note {
  font-size: 12px;
}

.page-about .about-rail__note--foot {
  margin: 16px 0 0;
  font-family: var(--font-data);
  font-size: 11px;
  color: var(--text-secondary);
  display: none;
}

.page-about .about-story {
  min-width: 0;
}

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

.page-about .about-section + .about-section {
  margin-top: 40px;
  border-top: 1px solid var(--border-line);
}

.page-about .about-section__kicker {
  color: var(--accent-cyan);
}

.page-about .about-section__title {
  margin: 8px 0 18px;
  font-size: clamp(24px, 3vw, 32px);
  color: var(--text-primary);
}

.page-about .about-section p {
  color: var(--text-secondary);
  line-height: 1.85;
  font-size: 16px;
  max-width: 66ch;
}

.page-about .about-section a {
  color: var(--accent-cyan);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-color: rgba(0, 229, 255, 0.4);
}

.page-about .about-section a:hover {
  color: var(--accent-orange);
  text-decoration-color: var(--accent-orange);
}

.page-about .about-mission__grid {
  display: grid;
  gap: 26px;
  margin-top: 24px;
}

.page-about .about-mission__figure,
.page-about .about-evolution__figure,
.page-about .about-team__figure {
  margin: 0;
  border: 1px solid var(--border-line);
  padding: 8px;
  background: var(--bg-deep);
}

.page-about .about-mission__img,
.page-about .about-evolution__img,
.page-about .about-team__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .about-version__lead,
.page-about .about-evolution__lead,
.page-about .about-team__lead {
  border-left: 3px solid var(--accent-cyan);
  padding-left: 18px;
  margin-bottom: 20px;
  font-size: 17px;
  line-height: 1.8;
}

.page-about .about-section .about-version__lead,
.page-about .about-section .about-evolution__lead,
.page-about .about-section .about-team__lead {
  color: var(--text-primary);
}

.page-about .about-version__labels {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0;
}

.page-about .about-version__flow {
  width: 100%;
  height: auto;
  display: block;
  margin: 28px 0;
  background: var(--about-deep-panel);
  border: 1px solid var(--border-line);
  padding: 16px;
  box-sizing: border-box;
}

.page-about .about-version__flow-line {
  fill: none;
  stroke-width: 2.5;
  stroke-linecap: round;
}

.page-about .about-version__flow-line--base {
  stroke: rgba(255, 255, 255, 0.25);
}

.page-about .about-version__flow-line--cyan {
  stroke: var(--accent-cyan);
  stroke-dasharray: 4 3;
}

.page-about .about-version__flow-line--orange {
  stroke: var(--accent-orange);
}

.page-about .about-version__flow-node {
  stroke-width: 2.5;
  stroke: var(--bg-base);
}

.page-about .about-version__flow-node--base {
  fill: #ffffff;
}

.page-about .about-version__flow-node--branch {
  fill: var(--border-strong);
}

.page-about .about-version__flow-node--cyan {
  fill: var(--accent-cyan);
}

.page-about .about-version__flow-node--orange {
  fill: var(--accent-orange);
}

.page-about .about-version__flow-tag {
  fill: var(--text-secondary);
  font-family: var(--font-data);
  font-size: 12px;
}

.page-about .about-version__table-wrap {
  margin: 24px 0;
  border: 1px solid var(--border-line);
  overflow-x: auto;
}

.page-about .about-version__table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-body);
  font-size: 15px;
}

.page-about .about-version__table th,
.page-about .about-version__table td {
  border: 1px solid var(--border-line);
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
}

.page-about .about-version__table thead th {
  background: var(--bg-deep);
  color: var(--text-primary);
  font-family: var(--font-heading);
  font-size: 13px;
  letter-spacing: 0.06em;
}

.page-about .about-version__table thead th:first-child {
  color: var(--text-secondary);
}

.page-about .about-version__table thead th:nth-child(2) {
  border-top: 2px solid var(--accent-cyan);
}

.page-about .about-version__table thead th:nth-child(3) {
  border-top: 2px solid var(--accent-orange);
}

.page-about .about-version__table tbody th {
  color: var(--text-secondary);
  font-weight: 400;
  font-family: var(--font-data);
  font-size: 13px;
}

.page-about .about-version__table tbody td {
  color: var(--text-primary);
}

.page-about .about-version__table tbody tr:hover td {
  background: rgba(0, 229, 255, 0.05);
}

.page-about .about-evolution__list {
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-evolution__item {
  position: relative;
  padding: 0 0 28px 20px;
  border-left: 1px solid var(--border-line);
  margin-left: 0;
  scroll-margin-top: 72px;
}

.page-about .about-evolution__item::before {
  content: '';
  position: absolute;
  left: -5px;
  top: 6px;
  width: 9px;
  height: 9px;
  background: var(--bg-base);
  border: 2px solid var(--accent-orange);
  transform: rotate(45deg);
  box-sizing: border-box;
}

.page-about .about-evolution__item:last-child {
  padding-bottom: 4px;
}

.page-about .about-evolution__item:last-child::before {
  border-color: var(--accent-cyan);
}

.page-about .about-evolution__year {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-data);
  font-size: 15px;
  font-weight: 700;
  color: var(--accent-cyan);
}

.page-about .about-evolution__heading {
  margin: 0 0 8px;
  font-family: var(--font-heading);
  font-size: 17px;
  color: var(--text-primary);
}

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

.page-about .about-evolution__figure {
  margin-top: 28px;
}

.page-about .about-evolution__bars {
  margin-top: 24px;
  border: 1px solid var(--border-line);
  background: var(--bg-deep);
  padding: 20px;
}

.page-about .about-evolution__bars-title {
  margin: 0 0 18px;
  font-family: var(--font-data);
  font-size: 13px;
  color: var(--accent-cyan);
  letter-spacing: 0.04em;
}

.page-about .about-evolution__bar {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) 72px;
  gap: 10px;
  align-items: center;
  margin-top: 12px;
}

.page-about .about-evolution__bar-label {
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--text-secondary);
}

.page-about .about-evolution__bar-track {
  height: 10px;
  background: rgba(255, 255, 255, 0.06);
  overflow: hidden;
  min-width: 0;
}

.page-about .about-evolution__bar-fill {
  display: block;
  height: 100%;
  min-width: 3px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-orange));
}

.page-about .about-evolution__bar-fill--2018 {
  width: 0.6%;
}

.page-about .about-evolution__bar-fill--2019 {
  width: 4%;
}

.page-about .about-evolution__bar-fill--2020 {
  width: 17%;
}

.page-about .about-evolution__bar-fill--2021 {
  width: 40%;
}

.page-about .about-evolution__bar-fill--2022 {
  width: 70%;
}

.page-about .about-evolution__bar-fill--2023 {
  width: 100%;
}

.page-about .about-evolution__bar-value {
  text-align: right;
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--text-primary);
}

.page-about .about-team__roles {
  display: grid;
  gap: 16px;
  margin: 24px 0;
}

.page-about .about-role {
  border: 1px solid var(--border-line);
  padding: 22px 20px;
  background: var(--bg-deep);
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease);
}

.page-about .about-role:hover {
  border-color: var(--accent-orange);
  transform: translateY(-2px);
}

.page-about .about-role__num {
  display: block;
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--accent-cyan);
  margin-bottom: 10px;
}

.page-about .about-role__title {
  margin: 0 0 8px;
  font-family: var(--font-heading);
  font-size: 18px;
  color: var(--text-primary);
}

.page-about .about-role p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-secondary);
}

.page-about .about-more {
  margin-top: 48px;
  padding: 28px 24px;
  border: 1px solid var(--border-line);
  border-left: 4px solid var(--accent-orange);
  background: linear-gradient(135deg, var(--bg-deep), rgba(10, 31, 68, 0.6));
}

.page-about .about-more__text {
  margin: 0;
  color: var(--text-primary);
  font-size: 16px;
  line-height: 1.8;
}

.page-about .about-more__text a {
  color: var(--accent-cyan);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.page-about .about-more__text a:hover {
  color: var(--accent-orange);
}

.page-about .about-more__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

@media (min-width: 768px) {
  .page-about .page-about__stats {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-about .about-version__table {
    font-size: 16px;
  }

  .page-about .about-evolution__item {
    margin-left: 64px;
    padding-left: 24px;
  }

  .page-about .about-evolution__year {
    position: absolute;
    left: -64px;
    top: 0;
    margin-bottom: 0;
  }

  .page-about .about-evolution__bar {
    grid-template-columns: 48px minmax(0, 1fr) 80px;
  }

  .page-about .about-more__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 900px) {
  .page-about .about-mission__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: center;
    gap: 36px;
  }

  .page-about .about-team__roles {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-about .about-version__table-wrap {
    overflow: visible;
  }
}

@media (min-width: 1024px) {
  .page-about .about-layout {
    display: grid;
    grid-template-columns: 240px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .about-rail {
    position: sticky;
    top: 24px;
    max-height: calc(100vh - 48px);
    overflow: auto;
  }

  .page-about .about-rail__list {
    display: block;
    gap: 0;
    overflow: visible;
  }

  .page-about .about-rail__item {
    flex: none;
    border-left: 1px solid var(--border-line);
    margin-left: 8px;
    padding: 0 0 20px 20px;
  }

  .page-about .about-rail__item::before {
    display: block;
    content: '';
    position: absolute;
    left: -4px;
    top: 4px;
    width: 7px;
    height: 7px;
    background: var(--bg-base);
    border: 2px solid var(--accent-orange);
    transform: rotate(45deg);
    box-sizing: border-box;
  }

  .page-about .about-rail__item:last-child::before {
    border-color: var(--accent-cyan);
  }

  .page-about .about-rail__link {
    display: block;
    border: none;
    padding: 0;
    white-space: normal;
  }

  .page-about .about-rail__link:hover {
    color: var(--text-primary);
  }

  .page-about .about-rail__link:hover .about-rail__year {
    color: var(--accent-orange);
  }

  .page-about .about-rail__note--foot {
    display: block;
  }

  .page-about .about-section {
    padding: 56px 0 0;
  }

  .page-about .about-section + .about-section {
    margin-top: 56px;
  }

  .page-about .about-version__table {
    min-width: 560px;
  }
}