.page-about {
  --about-rail-width: 198px;
  --about-soft-line: rgba(31, 76, 120, 0.55);
  --about-cyan-soft: rgba(53, 224, 214, 0.16);
  background: var(--hp-ink);
  color: var(--hp-white);
  overflow-x: clip;
}

.page-about .about-crumbs {
  padding-top: 20px;
}

.page-about .about-hero {
  position: relative;
  display: grid;
  gap: clamp(28px, 5vw, 56px);
  padding-block: clamp(36px, 6vw, 88px);
  isolation: isolate;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 8% -8% auto 42%;
  height: 420px;
  background: radial-gradient(circle at 50% 50%, rgba(53, 224, 214, 0.14), transparent 66%);
  filter: blur(8px);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero__copy,
.page-about .about-hero__visual {
  position: relative;
  z-index: 1;
}

.page-about .about-hero h1 {
  margin: 14px 0 18px;
  font-family: var(--hp-font-head);
  font-size: clamp(2.3rem, 7vw, 4.6rem);
  line-height: 0.98;
  letter-spacing: -0.045em;
  text-wrap: balance;
}

.page-about .about-hero__lead {
  max-width: 62ch;
  margin: 0;
  color: var(--hp-silver);
  font-size: clamp(1rem, 1.35vw, 1.12rem);
  line-height: 1.85;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(112px, 1fr));
  gap: 14px;
  margin: 30px 0 0;
  padding: 0;
}

.page-about .about-hero__fact {
  padding-left: 12px;
  border-left: 1px solid var(--hp-line);
}

.page-about .about-hero__fact dt {
  color: var(--hp-muted);
  font-size: 0.76rem;
  letter-spacing: 0.04em;
}

.page-about .about-hero__fact dd {
  margin: 6px 0 0;
  color: var(--hp-white);
  font-family: var(--hp-font-head);
  font-size: 1.05rem;
  line-height: 1.35;
}

.page-about .about-hero__visual {
  min-height: 280px;
  border: 1px solid var(--hp-line);
  border-radius: var(--hp-radius-lg);
  background:
    linear-gradient(145deg, rgba(11, 31, 58, 0.92), rgba(5, 11, 26, 0.68)),
    radial-gradient(circle at 72% 20%, rgba(255, 118, 87, 0.12), transparent 36%);
  overflow: hidden;
}

.page-about .about-hero__visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(31, 76, 120, 0.22) 1px, transparent 1px),
    linear-gradient(90deg, rgba(31, 76, 120, 0.22) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(circle at 50% 50%, #000 20%, transparent 76%);
  pointer-events: none;
}

.page-about .about-orbit {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  height: auto;
}

.page-about .about-orbit__ring {
  fill: none;
  stroke: rgba(174, 187, 201, 0.28);
  stroke-width: 1;
}

.page-about .about-orbit__ring--inner {
  stroke-dasharray: 4 8;
}

.page-about .about-orbit__path {
  fill: none;
  stroke: url(#about-orbit-line);
  stroke-width: 2;
  opacity: 0.85;
}

.page-about .about-orbit__node circle {
  fill: var(--hp-ink);
  stroke: var(--hp-cyan);
  stroke-width: 1.5;
}

.page-about .about-orbit__node--coral circle {
  stroke: var(--hp-coral);
}

.page-about .about-orbit__label {
  fill: var(--hp-silver);
  font-family: var(--hp-font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
}

.page-about .about-layout {
  display: grid;
  gap: 26px;
  padding-block: clamp(36px, 6vw, 86px);
}

.page-about .about-index {
  align-self: start;
  padding: 16px;
  border: 1px solid var(--hp-line);
  border-radius: var(--hp-radius-md);
  background: rgba(11, 31, 58, 0.58);
}

.page-about .about-index__label {
  margin: 0;
  color: var(--hp-muted);
  font-family: var(--hp-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
}

.page-about .about-index__list {
  display: flex;
  gap: 6px;
  margin: 12px 0 0;
  padding: 0;
  overflow-x: auto;
  list-style: none;
  scrollbar-width: thin;
}

.page-about .about-index__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 999px;
  color: var(--hp-silver);
  font-size: 0.86rem;
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.2s ease, color 0.2s ease;
}

.page-about .about-index__link:hover {
  color: var(--hp-cyan);
  background: rgba(53, 224, 214, 0.1);
}

.page-about .about-index__num {
  color: var(--hp-muted);
  font-family: var(--hp-font-mono);
  font-size: 0.68rem;
}

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

.page-about .about-section {
  padding-block: clamp(36px, 6vw, 72px);
  border-top: 1px solid var(--about-soft-line);
  scroll-margin-top: 100px;
}

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

.page-about .about-section__marker {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.page-about .about-section__num {
  color: var(--hp-coral);
  font-family: var(--hp-font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
}

.page-about .about-section h2,
.page-about .about-start h2 {
  margin: 0 0 18px;
  font-family: var(--hp-font-head);
  font-size: clamp(1.8rem, 4.2vw, 2.75rem);
  line-height: 1.08;
  letter-spacing: -0.035em;
  text-wrap: balance;
}

.page-about .about-section__body > p {
  max-width: 70ch;
  margin: 0 0 14px;
  color: var(--hp-silver);
  font-size: 1rem;
  line-height: 1.85;
}

.page-about .about-figure {
  margin: 30px 0 0;
}

.page-about .about-figure .hp-media {
  overflow: hidden;
  border: 1px solid var(--hp-line);
  border-radius: var(--hp-radius-md);
  background: var(--hp-ship);
}

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

.page-about .about-figure .hp-media__caption {
  margin-top: 10px;
  color: var(--hp-muted);
  font-size: 0.82rem;
  line-height: 1.65;
}

.page-about .about-principles {
  display: grid;
  gap: 12px;
  margin-top: 24px;
}

.page-about .about-principle {
  border: 1px solid var(--hp-line);
  border-radius: var(--hp-radius-md);
  background: linear-gradient(130deg, rgba(11, 31, 58, 0.86), rgba(5, 11, 26, 0.62));
  transition: border-color 0.2s ease, transform 0.2s ease, background 0.2s ease;
}

.page-about .about-principle:hover {
  border-color: rgba(53, 224, 214, 0.55);
  transform: translateY(-2px);
}

.page-about .about-principle[open] {
  border-color: rgba(53, 224, 214, 0.65);
  background: linear-gradient(130deg, rgba(11, 31, 58, 0.96), rgba(5, 11, 26, 0.72));
}

.page-about .about-principle__summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
}

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

.page-about .about-principle__index {
  display: grid;
  flex: 0 0 34px;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: rgba(53, 224, 214, 0.1);
  color: var(--hp-cyan);
  font-family: var(--hp-font-mono);
  font-size: 0.8rem;
  place-items: center;
}

.page-about .about-principle__copy {
  display: grid;
  flex: 1;
  gap: 2px;
}

.page-about .about-principle__title {
  font-family: var(--hp-font-head);
  font-size: 1.05rem;
}

.page-about .about-principle__hint {
  color: var(--hp-muted);
  font-size: 0.84rem;
  line-height: 1.6;
}

.page-about .about-principle__plus {
  position: relative;
  flex: 0 0 20px;
  width: 20px;
  height: 20px;
}

.page-about .about-principle__plus::before,
.page-about .about-principle__plus::after {
  content: "";
  position: absolute;
  top: 50%;
  right: 0;
  left: 0;
  height: 1px;
  background: var(--hp-cyan);
  transition: transform 0.2s ease;
}

.page-about .about-principle__plus::after {
  transform: rotate(90deg);
}

.page-about .about-principle[open] .about-principle__plus::after {
  transform: rotate(0deg);
}

.page-about .about-principle__more {
  padding: 0 18px 18px 66px;
  color: var(--hp-silver);
}

.page-about .about-principle__more p {
  max-width: 68ch;
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.8;
}

.page-about .about-workflow {
  display: grid;
  gap: 24px;
  margin-top: 24px;
}

.page-about .about-flow {
  position: relative;
  display: grid;
  gap: 12px;
}

.page-about .about-flow::before {
  content: "";
  position: absolute;
  top: 16px;
  bottom: 16px;
  left: 20px;
  width: 1px;
  background: linear-gradient(var(--hp-cyan), var(--hp-coral));
  opacity: 0.5;
}

.page-about .about-flow__node {
  position: relative;
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 12px;
  padding: 16px;
  border: 1px solid var(--hp-line);
  border-radius: var(--hp-radius-sm);
  background: rgba(11, 31, 58, 0.62);
}

.page-about .about-flow__step {
  position: relative;
  z-index: 1;
  display: grid;
  width: 38px;
  height: 38px;
  border: 1px solid var(--hp-cyan);
  border-radius: 50%;
  background: var(--hp-ink);
  color: var(--hp-cyan);
  font-family: var(--hp-font-mono);
  font-size: 0.72rem;
  place-items: center;
}

.page-about .about-flow__title {
  margin: 0 0 4px;
  font-family: var(--hp-font-head);
  font-size: 1rem;
}

.page-about .about-flow__text {
  margin: 0;
  color: var(--hp-silver);
  font-size: 0.9rem;
  line-height: 1.72;
}

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

.page-about .about-team {
  display: grid;
  gap: 24px;
  margin-top: 22px;
}

.page-about .about-team__copy > p {
  max-width: 70ch;
  margin: 0;
  color: var(--hp-silver);
  line-height: 1.85;
}

.page-about .about-team__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
  gap: 12px;
  margin: 0 0 20px;
}

.page-about .about-team__stat {
  padding: 14px;
  border: 1px solid var(--hp-line);
  border-radius: var(--hp-radius-sm);
  background: rgba(11, 31, 58, 0.55);
}

.page-about .about-team__stat dt {
  color: var(--hp-muted);
  font-size: 0.78rem;
}

.page-about .about-team__stat dd {
  margin: 6px 0 0;
  color: var(--hp-white);
  font-family: var(--hp-font-head);
  font-size: 1.42rem;
  line-height: 1.2;
}

.page-about .about-team__stat dd span {
  color: var(--hp-cyan);
  font-family: var(--hp-font-mono);
  font-size: 0.78rem;
}

.page-about .about-team__culture {
  padding-left: 16px;
  border-left: 2px solid var(--hp-coral);
}

.page-about .about-team__map {
  display: grid;
  min-height: 220px;
  padding: 16px;
  overflow: hidden;
  border: 1px solid var(--hp-line);
  border-radius: var(--hp-radius-md);
  background:
    radial-gradient(circle at 70% 20%, rgba(255, 118, 87, 0.13), transparent 35%),
    linear-gradient(140deg, rgba(11, 31, 58, 0.8), rgba(5, 11, 26, 0.6));
  place-items: center;
}

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

.page-about .about-waves__path {
  fill: none;
  stroke: rgba(53, 224, 214, 0.35);
  stroke-width: 1.3;
}

.page-about .about-waves__trail {
  fill: none;
  stroke: rgba(255, 118, 87, 0.35);
  stroke-width: 1;
  stroke-dasharray: 5 7;
}

.page-about .about-waves__dot {
  fill: var(--hp-cyan);
  opacity: 0.7;
}

.page-about .about-timeline {
  position: relative;
  display: grid;
  gap: 14px;
  margin-top: 24px;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  top: 10px;
  bottom: 10px;
  left: 11px;
  width: 1px;
  background: linear-gradient(var(--hp-cyan), var(--hp-coral));
  opacity: 0.65;
}

.page-about .about-timeline__item {
  position: relative;
  margin-left: 24px;
  padding: 16px 18px;
  border: 1px solid var(--hp-line);
  border-radius: var(--hp-radius-sm);
  background: rgba(11, 31, 58, 0.6);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  top: 22px;
  left: -19px;
  width: 9px;
  height: 9px;
  border: 2px solid var(--hp-cyan);
  border-radius: 50%;
  background: var(--hp-ink);
}

.page-about .about-timeline__item:hover,
.page-about .about-timeline__item:focus {
  border-color: rgba(53, 224, 214, 0.6);
  transform: translateX(2px);
}

.page-about .about-timeline__year {
  color: var(--hp-coral);
  font-family: var(--hp-font-mono);
  font-size: 0.78rem;
}

.page-about .about-timeline__title {
  margin: 4px 0 4px;
  font-family: var(--hp-font-head);
  font-size: 1.05rem;
}

.page-about .about-timeline__text {
  margin: 0;
  color: var(--hp-silver);
  font-size: 0.9rem;
  line-height: 1.75;
}

.page-about .about-timeline__pop {
  max-height: 0;
  margin: 0;
  overflow: hidden;
  color: var(--hp-mist);
  font-size: 0.84rem;
  line-height: 1.7;
  opacity: 0;
  transition: max-height 0.25s ease, opacity 0.25s ease, margin 0.25s ease;
}

.page-about .about-timeline__item:hover .about-timeline__pop,
.page-about .about-timeline__item:focus .about-timeline__pop,
.page-about .about-timeline__item:focus-within .about-timeline__pop {
  max-height: 120px;
  margin-top: 10px;
  opacity: 1;
}

.page-about .about-timeline__pop span {
  margin-right: 6px;
  color: var(--hp-cyan);
  font-family: var(--hp-font-mono);
  font-size: 0.72rem;
}

.page-about .about-start {
  display: grid;
  gap: 20px;
  margin-top: clamp(24px, 4vw, 48px);
  padding: clamp(22px, 4vw, 44px);
  border: 1px solid rgba(53, 224, 214, 0.28);
  border-radius: var(--hp-radius-lg);
  background:
    radial-gradient(circle at 90% 20%, rgba(255, 118, 87, 0.2), transparent 36%),
    linear-gradient(130deg, rgba(11, 31, 58, 0.92), rgba(5, 11, 26, 0.68));
}

.page-about .about-start__copy p:not(.hp-eyebrow) {
  max-width: 68ch;
  margin: 0;
  color: var(--hp-silver);
  line-height: 1.85;
}

.page-about .about-start__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .about-start__note {
  margin: 0;
  color: var(--hp-muted);
  font-size: 0.88rem;
  line-height: 1.7;
}

.page-about .about-start__note a {
  color: var(--hp-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 224, 214, 0.45);
}

.page-about a:focus-visible,
.page-about summary:focus-visible,
.page-about [tabindex]:focus-visible {
  outline: 2px solid var(--hp-cyan);
  outline-offset: 3px;
}

@media (min-width: 760px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.95fr);
    align-items: center;
  }

  .page-about .about-team {
    grid-template-columns: minmax(0, 1.2fr) minmax(240px, 0.8fr);
    align-items: center;
  }

  .page-about .about-workflow {
    grid-template-columns: minmax(0, 1.08fr) minmax(260px, 0.92fr);
    align-items: start;
    gap: 32px;
  }

  .page-about .about-workflow__figure {
    position: sticky;
    top: 108px;
  }

  .page-about .about-principle__more {
    padding-left: 66px;
  }
}

@media (min-width: 980px) {
  .page-about .about-layout {
    grid-template-columns: var(--about-rail-width) minmax(0, 1fr);
    gap: clamp(32px, 5vw, 72px);
  }

  .page-about .about-index {
    position: sticky;
    top: 96px;
  }

  .page-about .about-index__list {
    flex-direction: column;
    overflow: visible;
  }

  .page-about .about-index__link {
    width: 100%;
    border-radius: var(--hp-radius-sm);
  }

  .page-about .about-timeline {
    margin-left: 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}