.page-about {
  --file-edge: repeating-linear-gradient(180deg, var(--accent) 0, var(--accent) 6px, transparent 6px, transparent 12px);
  max-width: var(--container);
  margin-inline: auto;
  padding: 1.25rem 1rem 4rem;
  color: var(--text-hi);
  background: var(--bg-void);
  font-family: var(--font-body);
}

.page-about h1,
.page-about h2,
.page-about h3 {
  font-family: var(--font-head);
  line-height: 1.22;
  font-weight: 700;
  margin: 0;
}

.page-about p,
.page-about figure {
  margin: 0;
}

.page-about img {
  display: block;
  max-width: 100%;
  height: auto;
}

.page-about a {
  color: inherit;
  text-decoration: none;
}

.page-about .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .35rem;
  margin-bottom: 1.25rem;
  font-family: var(--font-mono);
  font-size: .73rem;
  letter-spacing: .08em;
  color: var(--text-lo);
}

.page-about .breadcrumb a {
  color: var(--text-lo);
}

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

.page-about .breadcrumb-separator {
  opacity: .6;
}

.page-about .about-hero {
  position: relative;
  padding-left: .75rem;
  margin-bottom: 3rem;
}

.page-about .about-hero::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  border-radius: 2px;
  background: var(--file-edge);
  opacity: .4;
}

.page-about .about-hero-head {
  position: relative;
  padding: 1.5rem 1.1rem 1.35rem;
  border: 1px solid var(--line);
  border-top-width: 3px;
  border-top-color: var(--accent);
  background: linear-gradient(180deg, var(--bg-card), rgba(13, 31, 58, .35));
}

.page-about .about-hero-head::after {
  content: '';
  position: absolute;
  top: .75rem;
  right: 1rem;
  width: 64px;
  height: 8px;
  background: repeating-linear-gradient(90deg, var(--accent) 0, var(--accent) 2px, transparent 2px, transparent 6px);
  opacity: .65;
}

.page-about .about-index {
  max-width: 22em;
  margin-bottom: .75rem;
}

.page-about .about-title {
  max-width: 17em;
}

.page-about .about-hero-head h1 {
  max-width: 17em;
  margin-bottom: .75rem;
  font-size: clamp(1.55rem, 4vw, 2.85rem);
}

.page-about .about-hero-desc {
  max-width: 50ch;
  font-size: .98rem;
  line-height: 1.7;
  color: var(--text-lo);
}

.page-about .about-idea {
  position: relative;
  display: grid;
  gap: 1rem;
  margin-top: 1.5rem;
  padding: 1.1rem;
  border: 1px solid var(--line);
  background:
    repeating-linear-gradient(0deg, rgba(232, 238, 245, .025) 0, rgba(232, 238, 245, .025) 1px, transparent 1px, transparent 34px),
    linear-gradient(180deg, rgba(18, 42, 69, .55), rgba(13, 31, 58, .28));
}

.page-about .about-idea::before {
  content: '';
  position: absolute;
  inset: .55rem;
  border: 1px dashed rgba(138, 163, 184, .32);
  pointer-events: none;
}

.page-about .about-idea-media,
.page-about .about-idea-body {
  position: relative;
  z-index: 1;
}

.page-about .about-idea-media figcaption,
.page-about .journey-media figcaption,
.page-about .data-media figcaption {
  padding: .45rem .15rem 0;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .08em;
  text-align: right;
  color: var(--text-lo);
}

.page-about .about-idea-media img {
  border-bottom: 2px solid var(--accent);
}

.page-about .about-idea-body {
  padding: .25rem .2rem;
}

.page-about .about-idea-body h2 {
  margin-bottom: .6rem;
  font-size: clamp(1.3rem, 3vw, 2rem);
}

.page-about .about-idea-body p {
  margin: .6rem 0;
  font-size: .95rem;
  line-height: 1.7;
  color: var(--text-lo);
}

.page-about .about-service,
.page-about .about-journey,
.page-about .about-data {
  padding: 2.5rem 0;
  border-top: 1px solid var(--line);
}

.page-about .about-section-head .index-label {
  margin-bottom: .55rem;
}

.page-about .about-section-head h2 {
  font-size: clamp(1.35rem, 3vw, 2rem);
}

.page-about .service-grid {
  display: grid;
  gap: 1rem;
  margin-top: 1.75rem;
}

.page-about .service-card {
  position: relative;
  padding: 1.9rem 1.15rem 1.35rem;
  background:
    repeating-linear-gradient(0deg, rgba(232, 238, 245, .025) 0, rgba(232, 238, 245, .025) 1px, transparent 1px, transparent 34px),
    var(--bg-card);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
  transition: transform .3s var(--ease), border-color .3s;
}

.page-about .service-card:hover {
  transform: translateY(-4px);
}

.page-about .service-num {
  position: absolute;
  top: .85rem;
  right: 1rem;
  font-family: var(--font-mono);
  font-size: .95rem;
  letter-spacing: .06em;
  color: var(--accent);
  opacity: .7;
}

.page-about .service-card h3 {
  max-width: 17em;
  margin-bottom: .6rem;
  font-size: 1.04rem;
  line-height: 1.35;
}

.page-about .service-card p {
  margin-bottom: .95rem;
  font-size: .92rem;
  line-height: 1.65;
  color: var(--text-lo);
}

.page-about .service-link {
  display: inline-flex;
  align-items: center;
  gap: .25rem;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .08em;
  color: var(--accent);
  border-bottom: 1px solid transparent;
}

.page-about .service-link:hover {
  border-bottom-color: var(--accent);
}

.page-about .journey-layout {
  display: grid;
  gap: 1.5rem;
  margin-top: 1.75rem;
}

.page-about .journey-media figure {
  margin: 0;
  padding: .5rem;
  border: 1px solid var(--line);
  background: var(--bg-card);
  box-shadow: 8px 8px 0 rgba(18, 42, 69, .6);
}

.page-about .journey-media img,
.page-about .data-media img {
  width: 100%;
  object-fit: cover;
}

.page-about .journey-list {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0 0 0 1.65rem;
}

.page-about .journey-list::before {
  content: '';
  position: absolute;
  top: .2rem;
  bottom: .2rem;
  left: .18rem;
  width: 2px;
  background: linear-gradient(180deg, var(--accent) 0%, var(--line) 75%, transparent 100%);
}

.page-about .journey-item {
  position: relative;
  padding: .9rem 0;
  border-bottom: 1px dashed rgba(30, 58, 95, .75);
}

.page-about .journey-item:last-child {
  border-bottom: 0;
}

.page-about .journey-item::before {
  content: '';
  position: absolute;
  left: -1.73rem;
  top: 1.08rem;
  width: .58rem;
  height: .58rem;
  border-radius: 50%;
  background: var(--bg-void);
  border: 2px solid var(--accent);
  box-shadow: 0 0 0 3px rgba(57, 255, 20, .12);
}

.page-about .journey-date {
  display: block;
  padding-bottom: .2rem;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .1em;
  color: var(--accent);
}

.page-about .journey-item h3 {
  margin-bottom: .3rem;
  font-size: 1rem;
  line-height: 1.35;
}

.page-about .journey-item p {
  font-size: .9rem;
  line-height: 1.6;
  color: var(--text-lo);
}

.page-about .data-layout {
  display: grid;
  gap: 1.5rem;
  margin-top: 1.75rem;
}

.page-about .data-media {
  align-self: start;
}

.page-about .data-media figure {
  position: relative;
  margin: 0;
  padding: .55rem;
  border: 1px solid var(--line);
  background: var(--bg-card);
}

.page-about .data-media figure::before {
  content: '';
  position: absolute;
  inset: .3rem;
  border: 1px dotted rgba(57, 255, 20, .4);
  pointer-events: none;
}

.page-about .data-stat-item {
  margin-bottom: .85rem;
  border: 1px solid var(--line);
  background: rgba(13, 31, 58, .55);
}

.page-about .data-stat-item[open] {
  background: rgba(13, 31, 58, .8);
}

.page-about .data-stat-item summary {
  list-style: none;
  display: flex;
  flex-direction: column;
  padding: 1.1rem 1.15rem .9rem;
  cursor: pointer;
}

.page-about .data-stat-item summary::-webkit-details-marker {
  display: none;
}

.page-about .data-stat-item summary:hover {
  background: var(--bg-hover);
}

.page-about .data-stat-item summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -4px;
}

.page-about .data-stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.9rem, 5vw, 3rem);
  line-height: 1;
  color: var(--accent);
}

.page-about .data-stat-label {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  margin-top: .6rem;
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-hi);
}

.page-about .data-stat-label::before {
  content: '';
  width: 22px;
  height: 2px;
  background: var(--accent);
}

.page-about .data-stat-desc {
  padding: 0 1.15rem 1.05rem;
  font-size: .9rem;
  line-height: 1.65;
  color: var(--text-lo);
}

.page-about .about-next {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 2.2rem;
  padding: 1.3rem 1.1rem;
  border: 1px solid var(--line);
  background:
    repeating-linear-gradient(45deg, rgba(57, 255, 20, .03) 0, rgba(57, 255, 20, .03) 8px, transparent 8px, transparent 16px),
    var(--bg-card);
}

.page-about .about-next-note {
  font-size: 1rem;
  color: var(--text-hi);
}

.page-about .about-next-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
}

.page-about .btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .45rem;
  min-height: 2.5rem;
  padding: .55rem 1.2rem;
  border: 1px solid var(--line);
  font-family: var(--font-body);
  font-size: .9rem;
  background: transparent;
  color: var(--text-hi);
  clip-path: polygon(8px 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
  transition: background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease);
}

.page-about .btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.page-about .btn-primary {
  padding-left: 1.35rem;
  background: var(--action);
  border-color: var(--action);
  color: #0a1a2f;
  font-weight: 700;
}

.page-about .btn-primary:hover {
  background: transparent;
  color: var(--action);
}

@media (prefers-reduced-motion: no-preference) {
  .page-about .btn-primary {
    animation: pageAboutPulse 2.6s var(--ease) infinite;
  }
}

@keyframes pageAboutPulse {
  0% {
    box-shadow: 0 0 0 0 rgba(255, 107, 53, .4);
  }
  70% {
    box-shadow: 0 0 0 10px rgba(255, 107, 53, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(255, 107, 53, 0);
  }
}

@media (min-width: 768px) {
  .page-about {
    padding: 2rem 2rem 4.5rem;
  }

  .page-about .about-hero {
    padding-left: 1rem;
  }

  .page-about .about-idea {
    grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
    align-items: center;
    gap: 1.6rem;
    padding: 1.4rem;
  }

  .page-about .about-idea-body {
    padding: .5rem 1rem .5rem 0;
  }

  .page-about .about-service,
  .page-about .about-journey,
  .page-about .about-data {
    padding-inline: 1rem;
  }

  .page-about .service-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.25rem;
  }

  .page-about .journey-layout {
    grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
    gap: 2rem;
  }

  .page-about .data-layout {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: 2rem;
  }

  .page-about .about-next {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 1.4rem 1.5rem;
  }
}