.page-about {
  --about-year-w: 3.2rem;
  --about-track-w: 1.25rem;
  --about-gap: 0.75rem;
  --about-rail-w: 220px;
  background: var(--cream);
  color: var(--brown);
  font-family: var(--font-body);
  padding: 1.25rem 1.1rem 2.75rem;
  overflow-x: hidden;
}

.page-about .breadcrumb {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 1.25rem;
  border-bottom: 1px solid rgba(245, 240, 230, 0.3);
  padding-bottom: 0.6rem;
}

.page-about .breadcrumb ol {
  display: flex;
  gap: 0.4rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .breadcrumb a {
  color: rgba(245, 240, 230, 0.8);
  font-weight: 700;
  text-decoration: none;
}

.page-about .breadcrumb a:hover {
  color: var(--gold);
}

.page-about .breadcrumb [aria-current="page"] {
  color: var(--gold);
}

.page-about .about-hero {
  background: var(--deep-blue);
  color: var(--cream);
  border-bottom: 8px double var(--gold);
  padding: 1.25rem 1rem 1rem;
  position: relative;
  box-shadow: 6px 6px 0 rgba(46, 26, 18, 0.2);
}

.page-about .about-hero__grid {
  display: grid;
  gap: 1rem;
}

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

.page-about .about-hero__kicker {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--gold);
  text-transform: uppercase;
  margin: 0 0 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.page-about .about-hero__kicker::before {
  content: "";
  display: inline-block;
  width: 2rem;
  height: 3px;
  background: var(--orange);
}

.page-about .about-hero__title {
  font-size: clamp(2.2rem, 7vw, 3.6rem);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: 0.02em;
  color: var(--cream);
  max-width: 11em;
  margin: 0 0 0.5rem;
}

.page-about .about-hero__lede {
  font-size: 1rem;
  line-height: 1.7;
  color: rgba(245, 240, 230, 0.85);
  max-width: 36em;
  margin: 0;
}

.page-about .about-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.1rem;
}

.page-about .about-hero__aside {
  border-left: 3px solid rgba(245, 240, 230, 0.3);
  padding-left: 0.75rem;
  margin-top: 0.75rem;
}

.page-about .about-hero__rule {
  display: block;
  width: 2rem;
  height: 3px;
  background: var(--orange);
  margin-bottom: 0.5rem;
}

.page-about .about-hero__key {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.5rem 0.75rem;
}

.page-about .about-hero__key div {
  display: flex;
  flex-direction: column;
}

.page-about .about-hero__key dt {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  color: rgba(245, 240, 230, 0.7);
}

.page-about .about-hero__key dd {
  margin: 0;
  font-size: clamp(1.2rem, 2.4vw, 1.6rem);
  font-weight: 900;
  color: var(--gold);
}

.page-about .about-hero__ticks {
  display: flex;
  justify-content: space-between;
  border-top: 2px solid rgba(245, 240, 230, 0.2);
  margin-top: 1.2rem;
  padding-top: 0.6rem;
}

.page-about .about-hero__ticks span {
  display: block;
  width: 2px;
  height: 14px;
  background: rgba(245, 240, 230, 0.55);
}

.page-about .about-hero__ticks span:nth-child(2n) {
  height: 22px;
}

.page-about .about-hero__ticks span:nth-child(3n) {
  height: 28px;
  background: var(--gold);
}

.page-about .about-frame {
  margin-top: 1.5rem;
}

.page-about .about-rail {
  position: static;
  margin-bottom: 1.25rem;
  border: 3px solid var(--brown);
  background: var(--gray);
  padding: 0.65rem 0.75rem;
  box-shadow: 5px 5px 0 rgba(46, 26, 18, 0.18);
}

.page-about .about-rail__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--deep-blue);
  margin-bottom: 0.5rem;
  font-weight: 700;
}

.page-about .about-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 0.4rem;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-about .about-rail__list::-webkit-scrollbar {
  display: none;
}

.page-about .about-rail__link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  white-space: nowrap;
  border: 2px solid var(--deep-blue);
  padding: 0.38rem 0.55rem;
  background: var(--cream);
  color: var(--deep-blue);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  text-decoration: none;
  transition: background 0.18s, color 0.18s;
}

.page-about .about-rail__link::before {
  content: "";
  width: 0.55rem;
  height: 0.55rem;
  background: var(--orange);
  border: 1px solid var(--brown);
  flex: 0 0 auto;
}

.page-about .about-rail__link:hover {
  background: var(--deep-blue);
  color: var(--cream);
}

.page-about .about-rail__num {
  color: var(--orange);
  font-weight: 900;
}

.page-about .about-rail__link:hover .about-rail__num {
  color: var(--gold);
}

.page-about .about-rail__status {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--deep-blue);
  margin-top: 0.55rem;
  font-family: var(--font-mono);
}

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

.page-about .about-chapter {
  position: relative;
  padding: 2rem 0 2.1rem;
  border-bottom: 3px solid var(--deep-blue);
  scroll-margin-top: 1.25rem;
}

.page-about .about-chapter__head {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.1rem;
}

.page-about .about-chapter__num {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 900;
  color: var(--cream);
  background: var(--deep-blue);
  padding: 0.35rem 0.6rem 0.2rem;
  border: 2px solid var(--brown);
  box-shadow: 3px 3px 0 rgba(46, 26, 18, 0.3);
  position: relative;
  top: 0.4rem;
  flex: 0 0 auto;
}

.page-about .about-chapter__head h2 {
  font-size: clamp(1.35rem, 3vw, 2rem);
  font-weight: 900;
  line-height: 1.15;
  margin: 0 0 0.2rem;
  color: var(--brown);
}

.page-about .about-chapter__note {
  font-size: 0.76rem;
  font-family: var(--font-mono);
  color: rgba(46, 26, 18, 0.64);
  letter-spacing: 0.04em;
  margin: 0;
}

.page-about .about-hero-figure {
  margin: 0 0 1.5rem;
  border: 3px solid var(--brown);
  box-shadow: 6px 6px 0 rgba(46, 26, 18, 0.2);
  background: var(--gray);
}

.page-about .about-hero-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.page-about .about-hero-figure figcaption {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.5rem 0.75rem;
  background: var(--deep-blue);
  color: var(--cream);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
}

.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0.5rem 0 0.25rem;
  max-width: 56rem;
}

.page-about .about-timeline__item {
  display: grid;
  grid-template-columns: var(--about-year-w) var(--about-track-w) minmax(0, 1fr);
  gap: var(--about-gap);
  position: relative;
  padding-bottom: 2rem;
  scroll-margin-top: 1.25rem;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: calc(var(--about-year-w) + var(--about-gap) + var(--about-track-w) / 2 - 2px);
  top: 0.55rem;
  bottom: 0;
  width: 4px;
  background: var(--gray);
  z-index: 0;
}

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

.page-about .about-timeline__year {
  font-family: var(--font-mono);
  font-weight: 900;
  text-align: right;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  color: var(--deep-blue);
  display: flex;
  flex-direction: column;
  line-height: 1.1;
  padding-top: 0.2rem;
}

.page-about .about-timeline__unit {
  font-size: 0.64rem;
  letter-spacing: 0.1em;
  color: var(--orange);
  font-weight: 700;
  margin-top: 0.15rem;
}

.page-about .about-timeline__track {
  display: flex;
  justify-content: center;
  position: relative;
}

.page-about .about-timeline__dot {
  display: block;
  width: 0.9rem;
  height: 0.9rem;
  background: var(--orange);
  border: 2px solid var(--brown);
  box-shadow: 2px 2px 0 rgba(46, 26, 18, 0.25);
  position: relative;
  z-index: 1;
  margin-top: 0.3rem;
}

.page-about .about-timeline__body {
  background: rgba(217, 208, 197, 0.18);
  border: 2px solid var(--brown);
  padding: 0.85rem 0.9rem 0.8rem;
  box-shadow: 4px 4px 0 rgba(46, 26, 18, 0.16);
  min-width: 0;
}

.page-about .about-timeline__body h3 {
  font-size: 1.05rem;
  font-weight: 900;
  margin: 0 0 0.35rem;
  color: var(--brown);
}

.page-about .about-timeline__body h3::before {
  content: "";
  width: 0.5rem;
  height: 0.5rem;
  background: var(--gold);
  display: inline-block;
  margin-right: 0.4rem;
}

.page-about .about-timeline__body p {
  margin: 0 0 0.5rem;
  font-size: 0.9rem;
  line-height: 1.7;
}

.page-about .about-timeline__meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--deep-blue);
  border-top: 1px dashed rgba(26, 42, 58, 0.35);
  padding-top: 0.5rem;
  margin-top: 0.5rem;
}

.page-about .about-timeline__meta a {
  color: var(--orange);
  font-weight: 700;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.page-about .about-timeline__meta a:hover {
  color: var(--deep-blue);
}

.page-about .about-timeline__item:target .about-timeline__body {
  outline: 3px solid var(--orange);
  outline-offset: 3px;
  background: #fffaf0;
  box-shadow: 4px 4px 0 rgba(232, 80, 42, 0.28);
}

.page-about .about-timeline__item:target .about-timeline__dot {
  background: var(--gold);
}

.page-about .about-philo {
  display: grid;
  gap: 1.25rem;
  align-items: center;
}

.page-about .about-philo__lead {
  font-size: clamp(1.1rem, 2.4vw, 1.45rem);
  font-weight: 900;
  color: var(--deep-blue);
  line-height: 1.4;
  border-left: 6px solid var(--orange);
  padding-left: 0.9rem;
  margin: 0 0 0.8rem;
}

.page-about .about-philo__text p {
  font-size: 0.92rem;
  line-height: 1.75;
  margin: 0 0 0.8rem;
}

.page-about .about-philo__steps {
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
  border-top: 2px solid var(--deep-blue);
  border-bottom: 2px solid var(--deep-blue);
}

.page-about .about-philo__steps li {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.6rem 0.4rem;
  font-size: 0.88rem;
  font-weight: 700;
  border-bottom: 1px dashed var(--gray);
}

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

.page-about .about-philo__stepnum {
  font-family: var(--font-mono);
  font-weight: 900;
  color: var(--cream);
  background: var(--deep-blue);
  padding: 0.2rem 0.45rem;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
}

.page-about .about-media {
  margin: 0;
  border: 3px solid var(--brown);
  box-shadow: 6px 6px 0 rgba(46, 26, 18, 0.2);
  background: var(--gray);
}

.page-about .about-media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .about-media--path img {
  aspect-ratio: 4 / 3;
}

.page-about .about-media--network img {
  aspect-ratio: 5 / 3;
}

.page-about .about-media figcaption {
  padding: 0.5rem 0.6rem;
  background: var(--cream);
  color: var(--brown);
  border-top: 2px solid var(--brown);
  font-size: 0.75rem;
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
}

.page-about .about-compare {
  margin-top: 1rem;
  border: 3px solid var(--deep-blue);
}

.page-about .about-compare__row {
  display: grid;
  grid-template-columns: 5.4rem 1fr;
  gap: 0.5rem;
  padding: 0.65rem 0.75rem;
  align-items: center;
}

.page-about .about-compare__row + .about-compare__row {
  border-top: 2px solid var(--deep-blue);
}

.page-about .about-compare__label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 900;
  letter-spacing: 0.06em;
  background: var(--gray);
  padding: 0.3rem 0.45rem;
  text-align: center;
}

.page-about .about-compare__path {
  font-size: 0.82rem;
  font-weight: 700;
  line-height: 1.45;
}

.page-about .about-compare__row--old .about-compare__path {
  color: rgba(46, 26, 18, 0.48);
  text-decoration: line-through;
  text-decoration-color: var(--dark-red);
}

.page-about .about-compare__row--new {
  background: var(--gold);
}

.page-about .about-compare__row--new .about-compare__path {
  color: var(--deep-blue);
}

.page-about .about-compare__row--new .about-compare__label {
  background: var(--deep-blue);
  color: var(--cream);
}

.page-about .about-chapter--network {
  background: var(--deep-blue);
  padding: 1.5rem 1rem 1.75rem;
  border-bottom: 8px double var(--gold);
  color: rgba(245, 240, 230, 0.85);
}

.page-about .about-chapter--network .about-chapter__head h2 {
  color: var(--cream);
}

.page-about .about-chapter--network .about-chapter__note {
  color: rgba(245, 240, 230, 0.68);
}

.page-about .about-chapter--network .about-chapter__num {
  background: var(--cream);
  color: var(--deep-blue);
  border-color: var(--brown);
}

.page-about .about-network__legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  border: 2px solid var(--gold);
  padding: 0.6rem 0.75rem;
  margin-bottom: 1.1rem;
  font-size: 0.78rem;
  font-weight: 700;
  background: rgba(245, 240, 230, 0.06);
}

.page-about .about-network__legend-item {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.page-about .about-network__swatch {
  width: 0.8rem;
  height: 0.8rem;
  display: inline-block;
  border: 1px solid var(--brown);
}

.page-about .about-network__swatch--db {
  background: var(--deep-blue);
}

.page-about .about-network__swatch--or {
  background: var(--orange);
}

.page-about .about-network__swatch--gd {
  background: var(--gold);
}

.page-about .about-network__grid {
  display: grid;
  gap: 1.25rem;
  align-items: start;
}

.page-about .about-network__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 3px solid var(--gold);
  border-left: 3px solid var(--gold);
}

.page-about .about-net-stat {
  border-right: 3px solid var(--gold);
  border-bottom: 3px solid var(--gold);
  padding: 0.9rem 0.8rem;
  background: var(--cream);
}

.page-about .about-net-stat__caption {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.12em;
  color: var(--orange);
  text-transform: uppercase;
}

.page-about .about-net-stat__value {
  display: block;
  font-size: clamp(1.3rem, 3vw, 1.9rem);
  font-weight: 900;
  color: var(--deep-blue);
  line-height: 1.15;
  margin: 0.15rem 0;
}

.page-about .about-net-stat__desc {
  font-size: 0.75rem;
  color: var(--brown);
}

.page-about .about-chapter--promise .about-chapter__head {
  margin-bottom: 1.5rem;
}

.page-about .about-promise {
  display: grid;
  gap: 0.9rem;
}

.page-about .about-promise__card {
  border: 3px solid var(--deep-blue);
  background: var(--cream);
  padding: 1.1rem 1rem 0.9rem;
  box-shadow: 4px 4px 0 rgba(46, 26, 18, 0.18);
  position: relative;
}

.page-about .about-promise__mark {
  position: absolute;
  top: -0.8rem;
  left: 0.9rem;
  background: var(--orange);
  color: var(--cream);
  font-family: var(--font-mono);
  font-weight: 900;
  padding: 0.25rem 0.5rem;
  border: 2px solid var(--brown);
  box-shadow: 2px 2px 0 rgba(46, 26, 18, 0.25);
}

.page-about .about-promise__card h3 {
  font-size: 1rem;
  font-weight: 900;
  margin: 0.6rem 0 0.4rem;
}

.page-about .about-promise__card p {
  font-size: 0.82rem;
  line-height: 1.7;
  margin: 0 0 0.7rem;
}

.page-about .about-promise__status {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  border-top: 1px dashed var(--gray);
  padding-top: 0.55rem;
  color: var(--deep-blue);
}

.page-about .about-promise__status--gold {
  color: #9a781f;
}

.page-about .about-promise__status--green {
  color: var(--green);
}

.page-about .about-next {
  margin-top: 2rem;
  border: 4px double var(--gold);
  background: var(--deep-blue);
  padding: 1.25rem 1rem;
  box-shadow: var(--shadow);
}

.page-about .about-next__inner {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.page-about .about-next__index {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--gold);
  margin: 0;
  font-weight: 700;
}

.page-about .about-next h2 {
  font-size: clamp(1.15rem, 2.5vw, 1.6rem);
  font-weight: 900;
  color: var(--cream);
  margin: 0;
}

.page-about .about-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 0.3rem;
}

.page-about .about-next .btn {
  text-decoration: none;
  font-weight: 900;
  border-width: 3px;
}

.page-about .about-rail__link:focus-visible,
.page-about .about-timeline__meta a:focus-visible,
.page-about .about-next .btn:focus-visible {
  outline: 3px dashed var(--orange);
  outline-offset: 3px;
}

@media (min-width: 720px) {
  .page-about {
    --about-year-w: 3.8rem;
    --about-track-w: 1.5rem;
    --about-gap: 0.9rem;
    padding: 1.75rem 2rem 3rem;
  }

  .page-about .about-hero {
    padding: 1.75rem 1.5rem 1.25rem;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1fr) 220px;
    gap: 2rem;
  }

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

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

  .page-about .about-hero-figure figcaption {
    padding: 0.6rem 0.85rem;
  }

  .page-about .about-timeline__body {
    padding: 1rem 1.1rem;
  }

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

@media (min-width: 920px) {
  .page-about .about-frame {
    display: grid;
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
    gap: var(--space);
    align-items: start;
  }

  .page-about .about-rail {
    position: sticky;
    top: calc(var(--space) + 8px);
    align-self: start;
    margin-bottom: 0;
  }

  .page-about .about-rail__list {
    flex-direction: column;
    align-items: stretch;
    overflow: visible;
  }

  .page-about .about-rail__link {
    white-space: normal;
    justify-content: flex-start;
  }

  .page-about .about-chapter {
    padding: 2.5rem 0 2.75rem;
  }

  .page-about .about-chapter--network {
    padding: 2rem 1.5rem 2.25rem;
  }

  .page-about .about-network__grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    gap: var(--space);
  }
}

@media (min-width: 1000px) {
  .page-about .about-philo {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: 1.8rem;
  }
}

@media (min-width: 1200px) {
  .page-about .about-promise {
    grid-template-columns: repeat(4, 1fr);
  }
}