.page-about {
  --about-ink: var(--bs-ink);
  --about-paper: var(--bs-paper);
  --about-night: var(--bs-night);
  --about-cyan: var(--bs-cyan);
  --about-line: var(--bs-line);
  --about-line-soft: var(--bs-line-soft);
  --about-mono: var(--bs-font-mono);
  --about-display: var(--bs-font-display);
  --about-body: var(--bs-font-body);
  --about-radius: var(--bs-radius);
  --about-radius-lg: var(--bs-radius-lg);
  --about-shadow-paper: var(--bs-shadow-paper);
  --about-shadow-1: var(--bs-shadow-1);
  --about-shadow-2: var(--bs-shadow-2);
  --about-gutter: var(--bs-gutter);
  --about-maxw: var(--bs-maxw);
  color: var(--about-ink);
  background: var(--about-paper);
  font-family: var(--about-body);
  line-height: 1.75;
}

.page-about * {
  box-sizing: border-box;
}

.page-about .bs-container {
  width: 100%;
  max-width: var(--about-maxw);
  margin: 0 auto;
  padding: 0 var(--about-gutter);
}

.page-about .bs-eyebrow {
  font-family: var(--about-mono);
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--about-cyan);
  margin: 0 0 0.9rem;
}

.page-about .bs-display {
  font-family: var(--about-display);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.01em;
  margin: 0;
}

.page-about .bs-h2 {
  font-family: var(--about-display);
  font-size: clamp(1.5rem, 1.1rem + 1.6vw, 2.15rem);
  font-weight: 700;
  line-height: 1.25;
  margin: 0;
}

.page-about .bs-h3 {
  font-family: var(--about-display);
  font-size: 1.08rem;
  font-weight: 700;
  line-height: 1.4;
  margin: 0 0 0.4rem;
}

.page-about .bs-text {
  font-size: 1.02rem;
  margin: 0 0 1.1rem;
  color: var(--about-ink);
}

.page-about .bs-lede {
  font-size: clamp(1.05rem, 1rem + 0.4vw, 1.22rem);
  line-height: 1.7;
  color: var(--about-ink);
  margin: 0;
}

.page-about .bs-crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-family: var(--about-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  margin-bottom: 1.6rem;
}

.page-about .bs-crumbs__item {
  color: var(--about-ink);
  text-decoration: none;
  opacity: 0.72;
}

.page-about .bs-crumbs__item[aria-current="page"] {
  opacity: 1;
  color: var(--about-cyan);
}

.page-about .bs-crumbs__item + .bs-crumbs__item::before {
  content: "/";
  margin-right: 0.5rem;
  opacity: 0.4;
}

.page-about .bs-media {
  margin: 0;
  border-radius: var(--about-radius-lg);
  overflow: hidden;
  background: var(--about-night);
  box-shadow: var(--about-shadow-1);
}

.page-about .bs-media__img {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .bs-media__cap {
  display: block;
  padding: 0.7rem 1rem;
  font-family: var(--about-mono);
  font-size: 0.76rem;
  letter-spacing: 0.04em;
  color: var(--about-paper);
  background: var(--about-night);
}

.page-about .about-cover {
  position: relative;
  overflow: hidden;
  padding: clamp(3rem, 6vw, 6rem) 0 clamp(2.4rem, 4vw, 4rem);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(0, 200, 255, 0.16), transparent 60%),
    linear-gradient(160deg, var(--about-night) 0%, #0a1a2e 100%);
  color: var(--about-paper);
}

.page-about .about-cover__slash {
  position: absolute;
  inset: -20% -10% auto auto;
  width: 46%;
  height: 160%;
  background: linear-gradient(180deg, var(--bs-slant-a), var(--bs-slant-b));
  opacity: 0.14;
  transform: skewX(-14deg);
  pointer-events: none;
}

.page-about .about-cover__inner {
  position: relative;
  z-index: 1;
}

.page-about .about-cover .bs-crumbs__item {
  color: var(--about-paper);
}

.page-about .about-cover__title {
  font-size: clamp(2.1rem, 1.4rem + 3.4vw, 3.6rem);
  color: var(--about-paper);
  margin: 0 0 1.2rem;
}

.page-about .about-cover__lede {
  max-width: 46rem;
  color: rgba(255, 255, 255, 0.86);
}

.page-about .about-figures {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(9.5rem, 1fr));
  gap: 1rem;
  margin-top: clamp(2rem, 4vw, 3rem);
}

.page-about .about-figure {
  padding: 1.1rem 1.2rem;
  border: 1px solid var(--about-line-soft);
  border-radius: var(--about-radius);
  background: rgba(255, 255, 255, 0.04);
}

.page-about .about-figure__num {
  display: block;
  font-family: var(--about-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--about-cyan);
  letter-spacing: 0.02em;
}

.page-about .about-figure__num--warm {
  color: var(--bs-orange);
}

.page-about .about-figure__label {
  display: block;
  margin-top: 0.35rem;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: rgba(255, 255, 255, 0.72);
}

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

.page-about .about-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2rem;
  padding-top: clamp(2.4rem, 5vw, 4rem);
  padding-bottom: clamp(2.4rem, 5vw, 4rem);
}

@media (min-width: 62rem) {
  .page-about .about-shell {
    grid-template-columns: 15rem minmax(0, 1fr);
    gap: 3.4rem;
  }
}

.page-about .about-index {
  align-self: start;
}

@media (min-width: 62rem) {
  .page-about .about-index {
    position: sticky;
    top: calc(var(--bs-header-h) + 1.6rem);
  }
}

.page-about .about-index__label {
  font-family: var(--about-mono);
  font-size: 0.72rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--about-cyan);
  margin: 0 0 0.9rem;
}

.page-about .about-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.15rem;
  border-left: 1px solid var(--about-line);
}

.page-about .about-index__link {
  display: flex;
  gap: 0.6rem;
  align-items: baseline;
  padding: 0.5rem 0 0.5rem 0.9rem;
  font-size: 0.9rem;
  color: var(--about-ink);
  text-decoration: none;
  border-left: 2px solid transparent;
  margin-left: -1px;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-about .about-index__link:hover,
.page-about .about-index__link:focus-visible {
  color: var(--about-cyan);
  border-left-color: var(--about-cyan);
}

.page-about .about-index__num {
  font-family: var(--about-mono);
  font-size: 0.74rem;
  color: var(--about-cyan);
  opacity: 0.8;
}

.page-about .about-flow {
  display: grid;
  gap: clamp(2rem, 4vw, 3.4rem);
  min-width: 0;
}

.page-about .about-chapter {
  padding: clamp(1.6rem, 3vw, 2.6rem);
  border-radius: var(--about-radius-lg);
  box-shadow: var(--about-shadow-paper);
}

.page-about .about-chapter--paper {
  background: var(--about-paper);
  border: 1px solid var(--about-line);
}

.page-about .about-chapter--night {
  background: linear-gradient(165deg, var(--about-night) 0%, #0b1c31 100%);
  color: var(--about-paper);
  border: 1px solid var(--about-line-soft);
}

.page-about .about-chapter--night .bs-text,
.page-about .about-chapter--night .bs-h2,
.page-about .about-chapter--night .bs-h3 {
  color: var(--about-paper);
}

.page-about .about-chapter--night .bs-text {
  color: rgba(255, 255, 255, 0.84);
}

.page-about .about-chapter__head {
  display: flex;
  align-items: baseline;
  gap: 0.9rem;
  margin-bottom: 1.2rem;
}

.page-about .about-chapter__num {
  font-family: var(--about-mono);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--about-cyan);
  letter-spacing: 0.08em;
}

.page-about .about-dropcap::first-letter {
  float: left;
  font-family: var(--about-display);
  font-size: 3.4rem;
  line-height: 0.86;
  font-weight: 800;
  padding: 0.1rem 0.6rem 0 0;
  color: var(--about-cyan);
}

.page-about .about-points {
  list-style: none;
  margin: 1.4rem 0 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

@media (min-width: 48rem) {
  .page-about .about-points {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .about-point {
  padding: 1rem 1.1rem;
  border-radius: var(--about-radius);
  border: 1px solid var(--about-line);
  background: rgba(0, 200, 255, 0.04);
}

.page-about .about-chapter--night .about-point {
  border-color: var(--about-line-soft);
  background: rgba(255, 255, 255, 0.04);
}

.page-about .about-point p {
  margin: 0;
  font-size: 0.92rem;
  color: inherit;
  opacity: 0.86;
}

.page-about .about-users {
  display: grid;
  gap: 1.6rem;
  margin-top: 1.4rem;
}

@media (min-width: 56rem) {
  .page-about .about-users {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }
}

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

.page-about .about-user {
  padding: 1rem 1.1rem;
  border-radius: var(--about-radius);
  border: 1px solid var(--about-line-soft);
  background: rgba(255, 255, 255, 0.04);
}

.page-about .about-user p {
  margin: 0;
  font-size: 0.92rem;
  color: rgba(255, 255, 255, 0.82);
}

.page-about .about-users__shot {
  align-self: stretch;
}

.page-about .about-timeline {
  list-style: none;
  margin: 1.6rem 0 0;
  padding: 0 0 0 1.4rem;
  position: relative;
  display: grid;
  gap: 1rem;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 0.32rem;
  top: 0.4rem;
  bottom: 0.4rem;
  width: 2px;
  background: linear-gradient(180deg, var(--about-cyan), transparent);
}

.page-about .about-tl {
  position: relative;
}

.page-about .about-tl::before {
  content: "";
  position: absolute;
  left: -1.4rem;
  top: 1.1rem;
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 50%;
  background: var(--about-paper);
  border: 2px solid var(--about-cyan);
}

.page-about .about-tl__item {
  border: 1px solid var(--about-line);
  border-radius: var(--about-radius);
  background: rgba(0, 200, 255, 0.03);
  overflow: hidden;
}

.page-about .about-tl__sum {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.7rem;
  padding: 0.9rem 1.1rem;
  cursor: pointer;
  list-style: none;
}

.page-about .about-tl__sum::-webkit-details-marker {
  display: none;
}

.page-about .about-tl__stage {
  font-family: var(--about-mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--about-cyan);
}

.page-about .about-tl__title {
  font-family: var(--about-display);
  font-size: 1rem;
  font-weight: 700;
}

.page-about .about-tl__mark {
  margin-left: auto;
  width: 0.6rem;
  height: 0.6rem;
  border-right: 2px solid var(--about-cyan);
  border-bottom: 2px solid var(--about-cyan);
  transform: rotate(45deg);
  transition: transform 0.2s ease;
}

.page-about .about-tl__item[open] .about-tl__mark {
  transform: rotate(-135deg);
}

.page-about .about-tl__body {
  padding: 0 1.1rem 1rem;
}

.page-about .about-tl__body p {
  margin: 0;
  font-size: 0.94rem;
  color: var(--about-ink);
  opacity: 0.88;
}

.page-about .about-data__shot,
.page-about .about-local__shot {
  margin: 1.4rem 0;
}

.page-about .about-contact {
  display: grid;
  gap: 0.8rem;
  margin: 1.4rem 0 0;
}

@media (min-width: 48rem) {
  .page-about .about-contact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-about .about-contact__item {
  padding: 0.9rem 1.1rem;
  border-radius: var(--about-radius);
  border: 1px solid var(--about-line);
  background: rgba(0, 200, 255, 0.04);
}

.page-about .about-contact__item dt {
  font-family: var(--about-mono);
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--about-cyan);
  margin-bottom: 0.3rem;
}

.page-about .about-contact__item dd {
  margin: 0;
  font-size: 0.96rem;
  word-break: break-word;
}

.page-about .about-contact__note {
  margin-top: 1.2rem;
  font-size: 0.9rem;
  opacity: 0.8;
}

.page-about .about-cta {
  padding: clamp(2.6rem, 5vw, 4.4rem) 0;
  background:
    radial-gradient(110% 80% at 12% 0%, rgba(0, 200, 255, 0.14), transparent 58%),
    linear-gradient(160deg, var(--about-night) 0%, #0a1a2e 100%);
  color: var(--about-paper);
}

.page-about .about-cta .bs-h2 {
  color: var(--about-paper);
}

.page-about .about-cta__lede {
  max-width: 42rem;
  color: rgba(255, 255, 255, 0.84);
  margin-top: 0.8rem;
}

.page-about .about-cta__grid {
  display: grid;
  gap: 1rem;
  margin-top: 1.8rem;
}

@media (min-width: 48rem) {
  .page-about .about-cta__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 72rem) {
  .page-about .about-cta__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .about-cta__card {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1.2rem 1.3rem;
  border-radius: var(--about-radius);
  border: 1px solid var(--about-line-soft);
  background: rgba(255, 255, 255, 0.05);
  color: var(--about-paper);
  text-decoration: none;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.page-about .about-cta__card:hover,
.page-about .about-cta__card:focus-visible {
  transform: translateY(-3px);
  border-color: var(--about-cyan);
  background: rgba(0, 200, 255, 0.1);
}

.page-about .about-cta__card .bs-h3 {
  color: var(--about-paper);
}

.page-about .about-cta__card p {
  margin: 0;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.78);
}

.page-about .about-cta__go {
  margin-top: auto;
  font-family: var(--about-mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  color: var(--about-cyan);
}