.page-about {
  --about-rail: 96px;
  --about-split-gap: 28px;
  background: var(--void);
  color: var(--near-white);
  overflow-x: clip;
}

.page-about .about-hero {
  position: relative;
  padding: 124px 0 56px;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 92% at 84% 0%, rgba(79, 227, 208, 0.16), transparent 58%),
    radial-gradient(80% 70% at 4% 88%, rgba(110, 106, 138, 0.22), transparent 62%),
    linear-gradient(180deg, #0a1226 0%, var(--void) 100%);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(154, 167, 189, 0.06) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(154, 167, 189, 0.06) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 78%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 78%);
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  max-width: 1120px;
}

.page-about .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: var(--fs-7);
  letter-spacing: 0.06em;
  color: var(--violet);
}

.page-about .breadcrumb a {
  color: var(--cold);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus-visible {
  color: var(--neon);
  border-color: rgba(79, 227, 208, 0.5);
}

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

.page-about .about-hero h1 {
  margin: 16px 0 0;
  font-size: var(--fs-1);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--near-white);
}

.page-about .about-hero__lede {
  margin-top: 20px;
  max-width: 60ch;
  color: var(--cold);
  font-size: var(--fs-5);
  line-height: 1.75;
}

.page-about .about-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px 18px;
  margin: 40px 0 0;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}

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

.page-about .about-fact dt {
  font-family: var(--font-mono);
  font-size: var(--fs-7);
  letter-spacing: 0.08em;
  color: var(--violet);
}

.page-about .about-fact dd {
  margin: 8px 0 0;
  font-size: var(--fs-3);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--near-white);
  font-variant-numeric: tabular-nums;
}

.page-about .about-fact dd span {
  margin-left: 4px;
  font-size: var(--fs-6);
  font-weight: 500;
  color: var(--cold);
}

.page-about .about-route {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  padding-top: 56px;
  padding-bottom: 56px;
}

.page-about .about-axis {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .about-axis__label {
  display: none;
  margin: 0;
  font-size: var(--fs-7);
  letter-spacing: 0.2em;
  color: var(--violet);
  white-space: nowrap;
}

.page-about .about-axis__rail {
  display: none;
  flex: 1 1 auto;
  height: 1px;
  background: linear-gradient(90deg, rgba(110, 106, 138, 0.6), rgba(79, 227, 208, 0.45));
}

.page-about .about-axis__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: var(--fs-7);
  letter-spacing: 0.06em;
  color: var(--cold);
}

.page-about .about-axis__list li {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  white-space: nowrap;
}

.page-about .about-axis__dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--violet);
}

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

.page-about .about-section {
  padding-bottom: 64px;
}

.page-about .about-section + .about-section {
  padding-top: 56px;
  border-top: 1px solid var(--line);
}

.page-about .about-section__head {
  max-width: 66ch;
}

.page-about .about-section__head .eyebrow {
  margin: 0;
}

.page-about .about-title {
  margin: 14px 0 0;
  font-size: var(--fs-2);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--near-white);
}

.page-about .about-intro {
  margin: 16px 0 0;
  color: var(--cold);
  font-size: var(--fs-5);
  line-height: 1.75;
}

.page-about .about-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-split-gap);
  margin-top: 34px;
}

.page-about .about-roles {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
}

.page-about .about-role {
  position: relative;
  padding: 18px 0 18px 22px;
  border-left: 1px solid var(--line);
}

.page-about .about-role::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 18px;
  width: 1px;
  height: 30px;
  background: linear-gradient(180deg, var(--neon), rgba(79, 227, 208, 0));
}

.page-about .about-role__meta {
  margin: 0;
  font-size: var(--fs-7);
  letter-spacing: 0.1em;
  color: var(--mist);
}

.page-about .about-role h3 {
  margin: 10px 0 10px;
  font-size: var(--fs-4);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--near-white);
}

.page-about .about-role p {
  margin: 0;
  color: var(--cold);
  font-size: var(--fs-5);
  line-height: 1.75;
}

.page-about .about-figure {
  margin: 0;
  min-width: 0;
}

.page-about .about-figure img,
.page-about .about-banner img,
.page-about .about-city img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: var(--night);
  box-shadow: var(--shadow-soft);
  object-fit: cover;
}

.page-about .about-figure figcaption {
  margin-top: 14px;
  padding-left: 12px;
  border-left: 1px solid var(--line);
  font-size: var(--fs-7);
  line-height: 1.8;
  color: var(--violet);
}

.page-about .about-rhythm {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  margin-top: 36px;
}

.page-about .about-beat {
  position: relative;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.page-about .about-beat::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 32px;
  height: 2px;
  background: var(--neon);
  box-shadow: var(--glow-neon);
}

.page-about .about-beat__num {
  margin: 0;
  font-size: var(--fs-7);
  letter-spacing: 0.12em;
  color: var(--neon);
}

.page-about .about-beat h3 {
  margin: 10px 0 8px;
  font-size: var(--fs-4);
  font-weight: 700;
  color: var(--near-white);
}

.page-about .about-beat p {
  margin: 0;
  color: var(--cold);
  font-size: var(--fs-6);
  line-height: 1.8;
}

.page-about .about-banner {
  margin: 32px 0 0;
}

.page-about .about-timeline {
  position: relative;
  margin: 40px 0 0;
  padding: 0 0 0 28px;
  list-style: none;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, rgba(79, 227, 208, 0.55), rgba(110, 106, 138, 0.28));
}

.page-about .about-node {
  position: relative;
  padding-bottom: 40px;
}

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

.page-about .about-node__marker {
  position: absolute;
  left: -26px;
  top: 6px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--structure);
  border: 1px solid var(--violet);
  transition: background 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.page-about .about-node:hover .about-node__marker,
.page-about .about-node:focus-within .about-node__marker {
  background: var(--neon);
  border-color: var(--neon);
  box-shadow: var(--glow-neon);
}

.page-about .about-node__version {
  margin: 0;
  font-size: var(--fs-7);
  letter-spacing: 0.12em;
  color: var(--mist);
}

.page-about .about-node__title {
  margin: 10px 0 10px;
  font-size: var(--fs-3);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--near-white);
}

.page-about .about-node__text {
  margin: 0;
  max-width: 62ch;
  color: var(--cold);
  font-size: var(--fs-5);
  line-height: 1.75;
}

.page-about .about-node__more {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
}

.page-about .about-node__more summary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  list-style: none;
  font-size: var(--fs-6);
  color: var(--mist);
  transition: color 0.18s ease;
}

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

.page-about .about-node__more summary::marker {
  display: none;
  content: "";
}

.page-about .about-node__more summary::before {
  content: "+";
  font-family: var(--font-mono);
  font-size: var(--fs-6);
  color: var(--neon);
}

.page-about .about-node__more[open] summary::before {
  content: "–";
}

.page-about .about-node__more summary:hover,
.page-about .about-node__more summary:focus-visible {
  color: var(--neon);
}

.page-about .about-node__more ul {
  margin: 14px 0 0;
  padding-left: 18px;
  color: var(--cold);
  font-size: var(--fs-6);
  line-height: 1.85;
}

.page-about .about-node__more li + li {
  margin-top: 6px;
}

.page-about .about-xian {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(70% 60% at 12% 20%, rgba(110, 106, 138, 0.24), transparent 62%),
    linear-gradient(180deg, rgba(12, 23, 48, 0.7), rgba(6, 11, 24, 1));
  padding: 64px 0;
}

.page-about .about-xian__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
}

.page-about .about-city {
  margin: 0;
  min-width: 0;
}

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

.page-about .about-xian__body .eyebrow {
  margin: 0;
}

.page-about .about-xian__body p {
  margin: 16px 0 0;
  color: var(--cold);
  font-size: var(--fs-5);
  line-height: 1.75;
}

.page-about .about-contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin: 28px 0 0;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.page-about .about-contact div {
  min-width: 0;
}

.page-about .about-contact dt {
  font-family: var(--font-mono);
  font-size: var(--fs-7);
  letter-spacing: 0.1em;
  color: var(--violet);
}

.page-about .about-contact dd {
  margin: 6px 0 0;
  font-size: var(--fs-5);
  color: var(--near-white);
  overflow-wrap: anywhere;
}

.page-about .about-cta {
  padding: 64px 0 84px;
}

.page-about .about-cta__inner {
  max-width: 820px;
}

.page-about .about-cta h2 {
  margin: 0;
  font-size: var(--fs-2);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--near-white);
}

.page-about .about-cta p {
  margin: 18px 0 0;
  color: var(--cold);
  font-size: var(--fs-5);
  line-height: 1.75;
}

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

.page-about .about-cta__links {
  font-size: var(--fs-6);
  color: var(--violet);
}

.page-about .about-link {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid rgba(184, 243, 235, 0.35);
  transition: color 0.18s ease, border-color 0.18s ease;
}

.page-about .about-link:hover,
.page-about .about-link:focus-visible {
  color: var(--neon);
  border-color: var(--neon);
}

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

  .page-about .about-axis__label {
    display: block;
  }

  .page-about .about-axis__rail {
    display: block;
  }

  .page-about .about-rhythm {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px;
  }

  .page-about .about-contact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px 24px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 168px 0 82px;
  }

  .page-about .about-route {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: 56px;
    padding-top: 88px;
    padding-bottom: 88px;
  }

  .page-about .about-axis {
    position: sticky;
    top: 96px;
    align-self: start;
    flex-direction: column;
    align-items: flex-start;
    gap: 18px;
    padding: 0;
    border-top: 0;
    border-bottom: 0;
  }

  .page-about .about-axis__label {
    writing-mode: vertical-rl;
    letter-spacing: 0.28em;
  }

  .page-about .about-axis__rail {
    flex: none;
    width: 1px;
    height: 92px;
    margin-left: 3px;
    background: linear-gradient(180deg, rgba(79, 227, 208, 0.5), rgba(110, 106, 138, 0.2));
  }

  .page-about .about-axis__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 14px;
  }

  .page-about .about-section {
    padding-bottom: 96px;
  }

  .page-about .about-section + .about-section {
    padding-top: 80px;
  }
}

@media (min-width: 1040px) {
  .page-about .about-split {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 48px;
    align-items: start;
  }

  .page-about .about-roles {
    gap: 10px;
  }

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

  .page-about .about-timeline {
    padding-left: 40px;
  }

  .page-about .about-node__marker {
    left: -38px;
  }

  .page-about .about-xian {
    padding: 96px 0;
  }

  .page-about .about-xian__inner {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    gap: 64px;
    align-items: center;
  }

  .page-about .about-cta {
    padding: 96px 0 120px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-node__marker,
  .page-about .about-link,
  .page-about .breadcrumb a,
  .page-about .about-node__more summary {
    transition: none;
  }
}