.page-about {
  --about-gap: clamp(20px, 3vw, 34px);
  --about-body-w: 840px;
  background-color: var(--paper);
  color: var(--ink);
}

/* ---------- Hero ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(34px, 6vw, 74px) 0 clamp(30px, 5vw, 58px);
  color: var(--paper);
  background-color: var(--deep);
  background-image:
    linear-gradient(var(--grid-line-dark) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line-dark) 1px, transparent 1px);
  background-size: 48px 48px;
  border-bottom: 1px solid var(--line-dark);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 48px);
  align-items: end;
}

.page-about .about-hero .crumbs {
  margin-bottom: 18px;
}

.page-about .about-hero .crumbs__link {
  color: var(--silver);
  text-decoration: none;
}

.page-about .about-hero .crumbs__link:hover {
  color: var(--signal);
}

.page-about .about-hero .crumbs__item,
.page-about .about-hero .crumbs__sep {
  color: var(--silver);
}

.page-about .about-hero__eyebrow {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--signal);
}

.page-about .about-hero__title {
  margin: 0 0 20px;
  max-width: 18em;
  font-size: clamp(30px, 5.6vw, 52px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.02em;
}

.page-about .about-hero__lede-text {
  margin: 0;
  max-width: 42em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.75;
  color: rgba(242, 240, 230, 0.84);
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(26px, 4vw, 38px) 0 0;
  padding: 0;
  background: var(--line-dark);
  border-top: 1px solid var(--line-dark);
}

.page-about .about-fact {
  padding: 14px 14px 12px 0;
  background: transparent;
}

.page-about .about-fact dt {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--silver);
}

.page-about .about-fact dd {
  margin: 6px 0 0;
  font-size: clamp(22px, 3.2vw, 30px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--paper);
  font-variant-numeric: tabular-nums;
}

.page-about .about-fact dd span {
  margin-left: 4px;
  font-size: 12px;
  font-weight: 500;
  color: var(--silver);
}

.page-about .about-hero__panel {
  padding: 16px 14px;
  border: 1px solid var(--line-dark);
  background: rgba(10, 32, 24, 0.62);
}

.page-about .about-hero__panel-head {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--silver);
}

.page-about .hero-lines {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .hero-line {
  display: grid;
  grid-template-columns: 44px 46px minmax(30px, 1fr) 46px;
  align-items: center;
  gap: 8px;
  padding: 7px 0;
  border-bottom: 1px solid var(--grid-line-dark);
  font-size: 12.5px;
}

.page-about .hero-line:last-child {
  border-bottom: 0;
}

.page-about .hero-line__code {
  color: var(--signal);
  font-size: 11px;
  letter-spacing: 0.06em;
}

.page-about .hero-line__name {
  color: var(--paper);
}

.page-about .hero-line__val {
  text-align: right;
  color: var(--paper);
  font-variant-numeric: tabular-nums;
}

.page-about .hero-bar {
  display: block;
  height: 4px;
  background: rgba(201, 207, 210, 0.14);
}

.page-about .hero-bar span {
  display: block;
  height: 100%;
  width: 100%;
  background: var(--signal);
}

.page-about .hero-line:nth-child(4) .hero-bar span {
  width: 80.6%;
}

.page-about .about-hero__panel-foot {
  margin: 12px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--silver);
}

.page-about .about-hero__panel-foot b {
  color: var(--signal);
  font-weight: 700;
}

/* ---------- Layout ---------- */
.page-about .about-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--about-gap);
  padding: clamp(28px, 5vw, 60px) 0 clamp(40px, 7vw, 88px);
}

.page-about .about-body {
  min-width: 0;
  max-width: var(--about-body-w);
}

/* ---------- TOC ---------- */
.page-about .about-toc {
  overflow-x: auto;
  padding: 8px;
  border: 1px solid var(--line-light);
  background: var(--card);
}

.page-about .about-toc__title {
  margin: 4px 6px 8px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--rock);
}

.page-about .about-toc__list {
  display: flex;
  flex-direction: row;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-toc .toc__link {
  display: block;
  padding: 7px 11px;
  white-space: nowrap;
  font-size: 13px;
  color: var(--rock);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color 160ms var(--ease), background-color 160ms var(--ease), border-color 160ms var(--ease);
}

.page-about .about-toc .toc__link:hover {
  color: var(--deep);
  background: rgba(46, 91, 67, 0.08);
}

.page-about .about-toc .toc__link[aria-current="true"] {
  color: var(--deep);
  background: rgba(182, 255, 60, 0.18);
  border-bottom-color: var(--signal);
}

/* ---------- Sections ---------- */
.page-about .about-sec {
  scroll-margin-top: calc(var(--header-h) + 20px);
  padding: clamp(30px, 4.5vw, 48px) 0;
  border-top: 1px solid var(--line-light);
}

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

.page-about .about-sec__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 20px;
}

.page-about .about-sec__num {
  flex: none;
  padding: 3px 8px;
  font-size: 12px;
  font-weight: 700;
  color: var(--moss);
  border: 1px solid var(--silver);
  background: var(--card);
  font-variant-numeric: tabular-nums;
}

.page-about .about-sec__title {
  margin: 0;
  font-size: clamp(22px, 3.4vw, 32px);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-about .about-sub {
  margin: clamp(26px, 4vw, 36px) 0 14px;
  font-size: 17px;
  font-weight: 700;
  color: var(--deep);
}

.page-about .about-p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.78;
  color: var(--ink);
}

.page-about .about-links {
  margin: 16px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--rock);
}

.page-about .about-links .link-more {
  margin: 0 2px;
}

/* ---------- Lists ---------- */
.page-about .about-list {
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line-light);
}

.page-about .about-list li {
  padding: 12px 0 12px 18px;
  border-bottom: 1px solid var(--line-light);
  font-size: 15.5px;
  line-height: 1.75;
  position: relative;
  color: var(--ink);
}

.page-about .about-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 22px;
  width: 8px;
  height: 1px;
  background: var(--moss);
}

.page-about .about-list b {
  color: var(--deep);
  font-weight: 700;
}

/* ---------- Steps ---------- */
.page-about .about-steps {
  margin: 0 0 var(--about-gap);
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  background: var(--line-light);
  border: 1px solid var(--line-light);
}

.page-about .about-step {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 16px 16px 12px;
  background: var(--card);
}

.page-about .about-step__idx {
  font-size: 13px;
  font-weight: 700;
  color: var(--steel);
  font-variant-numeric: tabular-nums;
  padding-top: 3px;
}

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

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

/* ---------- Notes ---------- */
.page-about .about-note {
  margin: 20px 0 0;
  padding: 12px 16px;
  border-left: 3px solid var(--signal);
  background: var(--card);
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--rock);
}

.page-about .about-note__label {
  display: block;
  margin-bottom: 4px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--moss);
}

/* ---------- Figures ---------- */
.page-about .about-figure {
  margin: var(--about-gap) 0;
  padding: 10px;
  background: var(--card);
  border: 1px solid var(--line-light);
}

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

.page-about .about-figure figcaption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: var(--rock);
}

.page-about .about-figure--aside {
  margin: 0;
}

/* ---------- Tables ---------- */
.page-about .about-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line-light);
  background: var(--card);
}

.page-about .about-table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  font-size: 14.5px;
}

.page-about .about-table caption {
  padding: 12px 14px;
  text-align: left;
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--rock);
  background: var(--card);
  border-bottom: 1px solid var(--line-light);
}

.page-about .about-table thead th {
  padding: 10px 14px;
  text-align: left;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--paper);
  background: var(--moss);
  white-space: nowrap;
}

.page-about .about-table tbody th,
.page-about .about-table tbody td {
  padding: 11px 14px;
  text-align: left;
  border-bottom: 1px solid var(--line-light);
  color: var(--ink);
  white-space: nowrap;
}

.page-about .about-table tbody th {
  position: sticky;
  left: 0;
  z-index: 1;
  font-weight: 700;
  color: var(--deep);
  background: var(--card);
  border-right: 1px solid var(--line-light);
}

.page-about .about-table thead th:first-child {
  position: sticky;
  left: 0;
  z-index: 2;
  border-right: 1px solid rgba(242, 240, 230, 0.24);
}

.page-about .about-table .num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  text-align: right;
}

.page-about .about-table__total th,
.page-about .about-table__total td {
  background: rgba(182, 255, 60, 0.16) !important;
  font-weight: 700;
  color: var(--deep);
}

/* ---------- Split ---------- */
.page-about .about-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--about-gap);
  align-items: start;
  margin-bottom: var(--about-gap);
}

/* ---------- Key figures ---------- */
.page-about .key-figures {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: var(--about-gap) 0;
  background: var(--line-light);
  border: 1px solid var(--line-light);
}

.page-about .key-figures__cell {
  padding: 16px 14px;
  background: var(--card);
}

.page-about .key-figures__num {
  display: block;
  font-size: clamp(24px, 3.6vw, 34px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--deep);
  font-variant-numeric: tabular-nums;
}

.page-about .key-figures__label {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--rock);
}

/* ---------- Timeline ---------- */
.page-about .about-timeline {
  margin: 24px 0 var(--about-gap);
  padding: 0 0 0 22px;
  list-style: none;
  border-left: 1px solid var(--line-light);
}

.page-about .about-timeline__item {
  position: relative;
  padding-bottom: 26px;
  scroll-margin-top: calc(var(--header-h) + 20px);
}

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

.page-about .about-timeline__dot {
  position: absolute;
  left: -27px;
  top: 5px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--card);
  border: 2px solid var(--signal);
}

.page-about .about-timeline__meta {
  margin: 0 0 6px;
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--moss);
}

.page-about .about-timeline__title {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--deep);
  line-height: 1.4;
}

.page-about .about-timeline__body p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--rock);
}

.page-about .about-timeline__body .link-more {
  font-size: 13.5px;
}

/* ---------- Channels ---------- */
.page-about .about-channels {
  margin: 0 0 var(--about-gap);
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  background: var(--line-light);
  border: 1px solid var(--line-light);
}

.page-about .about-channel {
  padding: 16px;
  background: var(--card);
}

.page-about .about-channel__tag {
  display: inline-block;
  padding: 2px 8px;
  margin-bottom: 10px;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--moss);
  border: 1px solid var(--silver);
}

.page-about .about-channel__value {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  word-break: break-word;
  color: var(--ink);
}

.page-about .about-channel__use {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--rock);
}

/* ---------- Next ---------- */
.page-about .about-next {
  padding: clamp(34px, 5vw, 60px) 0 clamp(38px, 6vw, 72px);
  color: var(--paper);
  background-color: var(--deep);
  background-image:
    linear-gradient(var(--grid-line-dark) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line-dark) 1px, transparent 1px);
  background-size: 48px 48px;
}

.page-about .about-next__title {
  margin: 0 0 20px;
  font-size: clamp(20px, 3vw, 26px);
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .about-next__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--line-dark);
  border: 1px solid var(--line-dark);
}

.page-about .about-next__card {
  display: block;
  padding: 16px;
  background: rgba(10, 32, 24, 0.62);
  text-decoration: none;
  transition: background-color 160ms var(--ease), transform 160ms var(--ease);
}

.page-about .about-next__card:hover {
  background: rgba(46, 91, 67, 0.5);
  transform: translateY(-2px);
}

.page-about .about-next__idx {
  display: block;
  margin-bottom: 8px;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--signal);
}

.page-about .about-next__name {
  display: block;
  margin-bottom: 6px;
  font-size: 16px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .about-next__desc {
  display: block;
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(242, 240, 230, 0.76);
}

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

  .page-about .key-figures {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  }

  .page-about .about-split {
    grid-template-columns: minmax(0, 1fr) 300px;
  }

  .page-about .about-next__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-about .about-layout {
    grid-template-columns: 236px minmax(0, 1fr);
  }

  .page-about .about-toc {
    position: sticky;
    top: calc(var(--header-h) + 24px);
    overflow: visible;
    padding: 0;
    border: 0;
    background: transparent;
  }

  .page-about .about-toc__title {
    margin: 0 0 10px;
  }

  .page-about .about-toc__list {
    flex-direction: column;
    gap: 1px;
  }

  .page-about .about-toc .toc__link {
    padding: 9px 12px;
    white-space: normal;
    border-bottom: 0;
    border-left: 2px solid var(--line-light);
    font-size: 13.5px;
  }

  .page-about .about-toc .toc__link[aria-current="true"] {
    border-bottom-color: transparent;
    border-left-color: var(--signal);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-next__card {
    transition: none;
  }

  .page-about .about-next__card:hover {
    transform: none;
  }
}