.page-about {
  --about-rail-w: 216px;
  --about-gap: 28px;
  display: block;
}

/* ---------- HERO ---------- */

.page-about .about-hero {
  position: relative;
  padding: 24px 0 52px;
  background:
    radial-gradient(circle at 82% 18%, rgba(185, 255, 60, 0.09), transparent 46%),
    repeating-linear-gradient(90deg, rgba(42, 74, 102, 0.16) 0 1px, transparent 1px 88px),
    repeating-linear-gradient(0deg, rgba(42, 74, 102, 0.16) 0 1px, transparent 1px 88px);
  border-bottom: 1px solid var(--line);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  margin-top: 26px;
}

.page-about .about-hero__main h1 {
  margin: 14px 0 18px;
  font-size: clamp(28px, 6vw, 52px);
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
  max-width: 18em;
}

.page-about .about-hero__lead {
  margin: 0;
  max-width: 38em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--slate);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .about-hero__aside {
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(23, 50, 76, 0.72), rgba(12, 26, 43, 0.9));
  padding: 22px 20px 24px;
  border-radius: 2px;
  position: relative;
}

.page-about .about-hero__aside::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 42px;
  height: 3px;
  background: var(--green);
}

.page-about .about-hero__aside-title {
  margin: 0 0 16px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--green);
}

.page-about .about-hero__facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-hero__facts li {
  display: grid;
  grid-template-columns: 78px 1fr;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px dashed rgba(42, 74, 102, 0.8);
}

.page-about .about-hero__facts li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-about .about-hero__fact-num {
  font-size: 20px;
  font-weight: 500;
  color: var(--green);
  letter-spacing: 0.02em;
}

.page-about .about-hero__fact-label {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--slate);
}

/* ---------- LAYOUT ---------- */

.page-about .about-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  padding: 44px 0 64px;
}

.page-about .about-rail {
  display: none;
}

.page-about .about-rail__title {
  margin: 0 0 12px;
  font-size: 11.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--slate);
  padding-left: 14px;
}

.page-about .about-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: rail;
}

.page-about .about-rail__list li + li {
  margin-top: 2px;
}

.page-about .about-rail .rail-link {
  display: block;
  padding: 8px 12px 8px 14px;
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--slate);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color var(--t), border-color var(--t), background-color var(--t);
}

.page-about .about-rail .rail-link:hover,
.page-about .about-rail .rail-link:focus-visible {
  color: var(--text);
  background: rgba(23, 50, 76, 0.55);
}

.page-about .about-rail .rail-link.is-active {
  color: var(--green);
  border-left-color: var(--green);
  background: rgba(185, 255, 60, 0.06);
}

.page-about .about-flow {
  display: grid;
  gap: 56px;
  min-width: 0;
}

/* ---------- SECTION ---------- */

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

.page-about .about-section__head {
  max-width: 60em;
  margin-bottom: 26px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.page-about .about-section__head h2 {
  margin: 10px 0 12px;
  font-size: clamp(21px, 3.4vw, 31px);
  line-height: 1.32;
  font-weight: 700;
  color: var(--text);
}

.page-about .about-section__lead {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--slate);
}

.page-about .about-section__lead a,
.page-about .sys-item__body a,
.page-about .eco-card a,
.page-about .start-tail a {
  color: var(--green);
  text-decoration: none;
  border-bottom: 1px solid rgba(185, 255, 60, 0.35);
  transition: border-color var(--t), color var(--t);
}

.page-about .about-section__lead a:hover,
.page-about .sys-item__body a:hover,
.page-about .eco-card a:hover,
.page-about .start-tail a:hover {
  border-bottom-color: var(--green);
}

.page-about .about-note {
  margin: 22px 0 0;
  padding: 12px 16px;
  border-left: 2px solid var(--pulse);
  background: rgba(255, 90, 43, 0.06);
  font-size: 14px;
  line-height: 1.75;
  color: var(--mush);
  max-width: 56em;
}

/* ---------- 01 CAPABILITY ---------- */

.page-about .about-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}

.page-about .cap-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.page-about .cap-cell {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 14px 18px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(16, 35, 56, 0.72);
  min-width: 0;
  transition: background-color var(--t);
}

.page-about .cap-cell:nth-child(odd) {
  background: rgba(12, 26, 43, 0.9);
}

.page-about .cap-cell:hover {
  background: rgba(23, 50, 76, 0.92);
}

.page-about .cap-cell__num {
  font-size: 26px;
  font-weight: 500;
  line-height: 1.1;
  color: var(--green);
  letter-spacing: 0.01em;
}

.page-about .cap-cell__num .cap-cell__unit {
  font-size: 13px;
  font-family: var(--sans);
  color: var(--slate);
  margin-left: 5px;
  letter-spacing: 0;
}

.page-about .cap-cell__label {
  font-size: 13px;
  line-height: 1.55;
  color: var(--slate);
}

/* ---------- FIGURES ---------- */

.page-about .about-figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 10px;
  border-radius: 2px;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 1px;
}

.page-about .about-figure--square img {
  aspect-ratio: 1 / 1;
}

.page-about .about-figure--wide img {
  aspect-ratio: 2 / 1;
}

.page-about .about-figure figcaption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--slate);
  padding: 0 2px;
}

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

/* ---------- 02 SYSTEM ---------- */

.page-about .sys-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.page-about .sys-item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .sys-item__no {
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--green);
}

.page-about .sys-item__title {
  margin: 0 0 10px;
  font-size: 18px;
  line-height: 1.45;
  font-weight: 600;
  color: var(--text);
}

.page-about .sys-item__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--slate);
  max-width: 52em;
}

/* ---------- 03 TIMELINE ---------- */

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

.page-about .tl-node {
  position: relative;
  display: grid;
  grid-template-columns: 20px 1fr;
  grid-template-areas:
    "dot ver"
    "line text";
  column-gap: 12px;
  padding: 0 0 22px;
}

.page-about .tl-node__dot {
  grid-area: dot;
  width: 11px;
  height: 11px;
  margin-top: 6px;
  border-radius: 50%;
  border: 1.5px solid var(--amber);
  background: transparent;
  position: relative;
  z-index: 1;
  transition: background-color var(--t), border-color var(--t), box-shadow var(--t);
}

.page-about .tl-node:last-child .tl-node__dot {
  border-color: var(--green);
  background: var(--green);
  box-shadow: 0 0 0 4px rgba(185, 255, 60, 0.14);
}

.page-about .tl-node::before {
  content: "";
  grid-area: line;
  position: absolute;
  left: 5px;
  top: 22px;
  bottom: 0;
  width: 1px;
  background: var(--line);
}

.page-about .tl-node:last-child::before {
  display: none;
}

.page-about .tl-node__ver {
  grid-area: ver;
  font-size: 16px;
  font-weight: 500;
  color: var(--text);
  letter-spacing: 0.06em;
}

.page-about .tl-node__year {
  display: block;
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--slate);
  margin-top: 3px;
}

.page-about .tl-node__text {
  grid-area: text;
  margin: 4px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--slate);
}

.page-about .tl-node:hover .tl-node__dot {
  background: var(--green);
  border-color: var(--green);
  box-shadow: 0 0 0 4px rgba(185, 255, 60, 0.16);
}

.page-about .tl-node:hover .tl-node__text {
  color: var(--text);
}

/* ---------- 04 TEAM ---------- */

.page-about .team-block {
  border: 1px solid var(--line);
  background: linear-gradient(150deg, rgba(12, 26, 43, 0.95), rgba(16, 35, 56, 0.75));
  padding: 22px 18px;
  border-radius: 2px;
}

.page-about .team-matrix {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 6px;
  max-width: 320px;
  margin-bottom: 22px;
}

.page-about .tm-cell {
  display: block;
  aspect-ratio: 1 / 1;
  border-radius: 1px;
  transition: transform var(--t), opacity var(--t);
}

.page-about .tm-cell--data {
  background: var(--green);
}

.page-about .tm-cell--edit {
  background: var(--amber);
}

.page-about .tm-cell--prod {
  background: var(--slate);
}

.page-about .tm-cell:hover {
  transform: translateY(-2px);
  opacity: 0.85;
}

.page-about .team-legend {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .team-legend__item {
  display: grid;
  grid-template-columns: 14px auto 1fr;
  align-items: start;
  gap: 10px;
  padding-top: 12px;
  border-top: 1px dashed rgba(42, 74, 102, 0.8);
}

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

.page-about .team-legend__swatch {
  width: 12px;
  height: 12px;
  margin-top: 4px;
  border-radius: 1px;
}

.page-about .team-legend__swatch--data {
  background: var(--green);
}

.page-about .team-legend__swatch--edit {
  background: var(--amber);
}

.page-about .team-legend__swatch--prod {
  background: var(--slate);
}

.page-about .team-legend__num {
  font-size: 19px;
  font-weight: 500;
  color: var(--text);
  line-height: 1.3;
}

.page-about .team-legend__text {
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate);
}

/* ---------- 05 ECOSYSTEM ---------- */

.page-about .eco-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about .eco-card {
  border: 1px solid var(--line);
  background: rgba(12, 26, 43, 0.82);
  padding: 20px 18px 22px;
  border-radius: 2px;
  transition: border-color var(--t), background-color var(--t);
}

.page-about .eco-card:hover {
  border-color: rgba(185, 255, 60, 0.42);
  background: rgba(16, 35, 56, 0.9);
}

.page-about .eco-card--link {
  background: rgba(255, 194, 75, 0.05);
  border-color: rgba(255, 194, 75, 0.3);
}

.page-about .eco-card__title {
  margin: 0 0 10px;
  font-size: 16.5px;
  line-height: 1.5;
  font-weight: 600;
  color: var(--text);
}

.page-about .eco-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--slate);
}

/* ---------- 06 START ---------- */

.page-about .about-section--start {
  padding-bottom: 8px;
}

.page-about .start-paths {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about .start-path {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 24px 20px 22px;
  border: 1px solid var(--line);
  background: linear-gradient(150deg, rgba(23, 50, 76, 0.8), rgba(8, 18, 31, 0.9));
  border-radius: 2px;
  text-decoration: none;
  position: relative;
  overflow: hidden;
  transition: border-color var(--t), transform var(--t);
}

.page-about .start-path::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 88% 12%, rgba(185, 255, 60, 0.14), transparent 52%);
  opacity: 0;
  transition: opacity var(--t);
  pointer-events: none;
}

.page-about .start-path:hover,
.page-about .start-path:focus-visible {
  border-color: var(--green);
  transform: translateY(-2px);
}

.page-about .start-path:hover::after,
.page-about .start-path:focus-visible::after {
  opacity: 1;
}

.page-about .start-path__tag {
  align-self: flex-start;
}

.page-about .start-path__title {
  font-size: 20px;
  line-height: 1.4;
  font-weight: 700;
  color: var(--text);
}

.page-about .start-path__desc {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--slate);
}

.page-about .start-path__go {
  margin-top: auto;
  padding-top: 12px;
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--green);
}

.page-about .start-tail {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.page-about .start-tail p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--slate);
  max-width: 48em;
}

/* ---------- RESPONSIVE ---------- */

@media (min-width: 640px) {
  .page-about .cap-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 32px 0 64px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: 7fr 5fr;
    gap: 48px;
    align-items: start;
  }

  .page-about .about-hero__aside {
    padding: 26px 24px 28px;
  }

  .page-about .about-split {
    grid-template-columns: 7fr 5fr;
    gap: 34px;
    align-items: start;
  }

  .page-about .about-flow {
    gap: 68px;
  }

  .page-about .sys-item {
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 22px;
    align-items: start;
  }

  .page-about .tl-node {
    grid-template-columns: 1fr;
    grid-template-areas: none;
    padding: 0 0 4px;
  }

  .page-about .timeline {
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 0;
    position: relative;
    margin-top: 6px;
  }

  .page-about .timeline::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 6px;
    height: 1px;
    background: var(--line);
  }

  .page-about .tl-node {
    padding-right: 18px;
    display: block;
    position: relative;
  }

  .page-about .tl-node::before {
    display: none;
  }

  .page-about .tl-node__dot {
    display: block;
    margin: 0 0 16px;
  }

  .page-about .tl-node__ver {
    display: block;
    margin-bottom: 2px;
  }

  .page-about .tl-node__year {
    margin-top: 0;
    margin-bottom: 10px;
  }

  .page-about .tl-node__text {
    margin-top: 0;
  }
}

@media (min-width: 1040px) {
  .page-about .about-layout {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
    gap: 56px;
    padding: 52px 0 78px;
  }

  .page-about .about-rail {
    display: block;
    position: sticky;
    top: 116px;
    align-self: start;
    max-height: calc(100vh - 150px);
    overflow-y: auto;
    padding-bottom: 8px;
  }

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

  .page-about .eco-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .page-about .team-matrix {
    max-width: 360px;
    gap: 7px;
  }

  .page-about .team-legend {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }

  .page-about .team-legend__item {
    grid-template-columns: 14px auto;
    grid-template-areas:
      "swatch num"
      "text text";
    padding-top: 0;
    border-top: 0;
    column-gap: 10px;
    row-gap: 8px;
  }

  .page-about .team-legend__swatch {
    grid-area: swatch;
  }

  .page-about .team-legend__num {
    grid-area: num;
  }

  .page-about .team-legend__text {
    grid-area: text;
  }
}

@media (min-width: 1280px) {
  .page-about .cap-cell {
    padding: 20px 18px 22px;
  }

  .page-about .cap-cell__num {
    font-size: 30px;
  }

  .page-about .about-section__head {
    margin-bottom: 32px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .tm-cell:hover,
  .page-about .start-path:hover,
  .page-about .start-path:focus-visible {
    transform: none;
  }
}