.page-about {
  --about-line: rgb(160 176 192 / 12%);
  --about-line-strong: rgb(160 176 192 / 30%);
  --about-panel: #1E2A3A;
  --about-panel-2: #162337;
  --about-accent: #39FF14;
  --about-warning: #FF6A00;
  --about-gridline: rgb(160 176 192 / 10%);
  min-height: 70vh;
  margin: 0;
  background:
    linear-gradient(var(--about-gridline) 1px, transparent 1px),
    linear-gradient(90deg, var(--about-gridline) 1px, transparent 1px),
    radial-gradient(900px 420px at 88% 8%, rgb(42 92 170 / 18%), transparent 60%),
    var(--color-bg);
  background-size: 48px 48px, 48px 48px, auto, auto;
  color: var(--color-text);
  font-family: var(--font-body);
  line-height: 1.7;
  overflow-x: hidden;
}

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

.page-about h1,
.page-about h2,
.page-about h3,
.page-about p,
.page-about ul,
.page-about ol,
.page-about figure,
.page-about figcaption {
  margin: 0;
}

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

.page-about .about-hero__inner,
.page-about .about-vision__inner,
.page-about .about-milestones__inner,
.page-about .about-capabilities__inner,
.page-about .about-commitment__inner,
.page-about .about-cta__inner {
  width: min(var(--container), 94%);
  margin-inline: auto;
}

.page-about .about-hero__inner {
  padding-block: clamp(2.5rem, 6vw, 4.5rem) clamp(2rem, 4vw, 3rem);
}

.page-about .about-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  color: var(--color-muted);
  margin-bottom: 1.75rem;
  padding: 0.35rem 0.6rem;
  border-left: 2px solid var(--color-accent);
  background: rgb(30 42 58 / 40%);
  width: fit-content;
}

.page-about .about-breadcrumb a {
  color: var(--color-muted);
  transition: color 0.2s ease;
}

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

.page-about .about-hero__layout {
  display: grid;
  gap: 2rem;
}

.page-about .about-hero__kicker {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.24em;
  color: var(--color-accent);
  margin-bottom: 1rem;
}

.page-about .about-hero__kicker::before {
  content: "";
  width: 1.7rem;
  height: 1px;
  background: var(--color-accent);
  display: inline-block;
}

.page-about .about-hero__title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(2rem, 6.4vw, 3.6rem);
  line-height: 1.16;
  letter-spacing: 0.02em;
  color: var(--color-white);
  text-shadow: 4px 4px 0 rgb(0 0 0 / 35%), 0 0 24px rgb(57 255 20 / 12%);
  text-wrap: balance;
}

.page-about .about-hero__lede {
  margin-top: 1.25rem;
  max-width: 54ch;
  color: rgb(224 230 237 / 88%);
  font-size: 1.02rem;
}

.page-about .about-hero__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1.1rem;
  margin-top: 1.5rem;
}

.page-about .about-hero__meta-item {
  position: relative;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--color-muted);
  border-left: 2px solid var(--color-accent);
  padding-left: 0.6rem;
}

.page-about .about-hero__visual {
  position: relative;
  align-self: center;
  padding: 0.75rem;
  background: rgb(10 22 45 / 70%);
  border: 1px solid rgb(160 176 192 / 25%);
  box-shadow: 10px 12px 0 rgb(42 92 170 / 15%);
}

.page-about .about-hero__visual::after {
  content: "OP-2024";
  position: absolute;
  right: 0.65rem;
  top: 0.65rem;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.18em;
  color: var(--color-muted);
}

.page-about .about-hero__svg {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 4px;
}

.page-about .about-index {
  border-block: 1px solid rgb(160 176 192 / 18%);
  background: rgb(30 42 58 / 55%);
}

.page-about .about-index__inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem;
  width: min(var(--container), 94%);
  margin-inline: auto;
  padding: 0.85rem 0;
}

.page-about .about-index__link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: var(--color-muted);
  padding: 0.35rem 0.6rem;
  border: 1px solid transparent;
  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(--color-accent);
  border-color: rgb(57 255 20 / 35%);
}

.page-about .about-index__num {
  color: var(--color-accent);
}

.page-about .about-vision,
.page-about .about-milestones,
.page-about .about-capabilities,
.page-about .about-commitment {
  padding-block: clamp(3rem, 7vw, 4.5rem) clamp(2rem, 5vw, 3.25rem);
}

.page-about .about-sectionhead {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 1rem;
  border-bottom: 1px solid rgb(160 176 192 / 22%);
  padding-bottom: 1rem;
  margin-bottom: 2.5rem;
}

.page-about .about-sectionhead::after {
  content: "✛";
  position: absolute;
  right: 0;
  bottom: -0.55rem;
  font-size: 0.9rem;
  color: var(--color-accent);
  line-height: 1;
}

.page-about .about-sectionhead__num {
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-weight: 900;
  font-size: clamp(3.4rem, 9vw, 6rem);
  line-height: 0.75;
  letter-spacing: -0.04em;
  color: var(--color-accent);
  -webkit-text-stroke: 2px var(--color-accent);
  color: transparent;
  opacity: 0.92;
}

.page-about .about-sectionhead__text h2 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.55rem, 4vw, 2.4rem);
  line-height: 1.15;
  letter-spacing: 0.04em;
  color: var(--color-white);
}

.page-about .about-sectionhead__sub {
  margin-top: 0.35rem;
  color: var(--color-muted);
  font-size: 0.94rem;
}

.page-about .about-sectionhead__coord {
  margin-left: auto;
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.18em;
  color: var(--color-muted);
  border: 1px solid rgb(160 176 192 / 22%);
  padding: 0.28rem 0.5rem;
  border-radius: 2px;
  white-space: nowrap;
}

.page-about .about-vision__layout {
  display: grid;
  gap: 1.75rem;
}

.page-about .about-vision__body {
  color: rgb(224 230 237 / 92%);
  font-size: 1.02rem;
}

.page-about .about-vision__body p + p {
  margin-top: 1rem;
}

.page-about .about-vision__card {
  position: relative;
  align-self: start;
  background: var(--gradient-haihe);
  padding: 1.75rem;
  border: 1px solid rgb(255 255 255 / 15%);
  box-shadow: 8px 10px 0 rgb(42 92 170 / 22%);
  transform: rotate(-1deg);
  color: var(--color-white);
}

.page-about .about-vision__card-tag {
  display: inline-block;
  background: var(--color-warning);
  color: var(--color-bg);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  padding: 0.25rem 0.55rem;
  border-radius: 2px;
}

.page-about .about-vision__card-title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.45rem;
  line-height: 1.3;
  margin: 0.9rem 0 0.6rem;
}

.page-about .about-vision__card-text {
  font-size: 0.92rem;
  color: rgb(224 230 237 / 90%);
}

.page-about .about-vision__card .btn--outline {
  margin-top: 1.25rem;
}

.page-about .about-milestones__layout {
  display: grid;
  gap: 2rem;
}

.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 1.75rem;
  position: relative;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 3px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--color-accent), var(--color-panel-2));
}

.page-about .about-timeline__item {
  position: relative;
  padding-bottom: 2.2rem;
}

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

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -1.75rem;
  top: 0.3rem;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--color-bg);
  border: 3px solid var(--color-accent);
}

.page-about .about-timeline__item::after {
  content: "";
  position: absolute;
  left: calc(-1.75rem + 5px);
  top: calc(0.3rem + 5px);
  width: 5px;
  height: 5px;
  background: var(--color-accent);
  border-radius: 50%;
}

.page-about .about-timeline__year {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  color: var(--color-accent);
  border: 1px solid rgb(57 255 20 / 35%);
  background: rgb(57 255 20 / 8%);
  padding: 0.18rem 0.5rem;
  margin-bottom: 0.5rem;
  border-radius: 2px;
}

.page-about .about-timeline__body h3 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--color-white);
  margin-bottom: 0.3rem;
}

.page-about .about-timeline__body p {
  color: var(--color-muted);
  font-size: 0.92rem;
}

.page-about .about-timeline__details {
  margin-top: 0.7rem;
  font-size: 0.88rem;
}

.page-about .about-timeline__details summary {
  list-style: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  border-bottom: 1px dotted rgb(57 255 20 / 60%);
  padding-bottom: 0.15rem;
  width: fit-content;
}

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

.page-about .about-timeline__details summary::before {
  content: "＋";
  display: inline-block;
}

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

.page-about .about-timeline__details p {
  margin-top: 0.5rem;
  border-left: 2px solid var(--color-panel-2);
  padding-left: 0.7rem;
  color: var(--color-muted);
  font-size: 0.86rem;
}

.page-about .about-milestones__figure {
  align-self: start;
  border: 1px solid rgb(160 176 192 / 25%);
  padding: 0.5rem;
  background: rgb(30 42 58 / 40%);
  transform: translateY(0.4rem);
}

.page-about .about-milestones__img,
.page-about .about-capabilities__img,
.page-about .about-commitment__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
}

.page-about .about-milestones__figure figcaption,
.page-about .about-capabilities__figure figcaption,
.page-about .about-commitment__figure figcaption {
  margin-top: 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  color: var(--color-muted);
}

.page-about .about-stats {
  margin-bottom: 2rem;
}

.page-about .about-stats__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.875rem;
}

.page-about .about-stat {
  position: relative;
  background: linear-gradient(180deg, rgb(30 42 58 / 85%), rgb(22 35 55 / 95%));
  border: 1px solid rgb(160 176 192 / 18%);
  border-left: 3px solid var(--color-accent);
  padding: 1rem 1rem 1.1rem;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.page-about .about-stat:nth-child(2),
.page-about .about-stat:nth-child(4) {
  transform: rotate(0.5deg);
}

.page-about .about-stat:nth-child(3),
.page-about .about-stat:nth-child(5) {
  transform: rotate(-0.5deg);
}

.page-about .about-stat:hover,
.page-about .about-stat:focus-within {
  transform: translateY(-3px);
  border-color: rgb(57 255 20 / 55%);
}

.page-about .about-stat__num {
  display: inline-block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.5rem, 4vw, 2.1rem);
  line-height: 1.1;
  color: var(--color-accent);
}

.page-about .about-stat__unit {
  display: inline-block;
  margin-left: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: rgb(224 230 237 / 82%);
  background: rgb(42 92 170 / 30%);
  border: 1px solid rgb(160 176 192 / 22%);
  padding: 0.15rem 0.4rem;
  border-radius: 999px;
  vertical-align: middle;
}

.page-about .about-stat p {
  margin-top: 0.6rem;
  font-size: 0.82rem;
  color: var(--color-muted);
  line-height: 1.5;
}

.page-about .about-capabilities__lower {
  display: grid;
  gap: 2rem;
  margin-top: 1.5rem;
}

.page-about .about-capabilities__figure {
  align-self: center;
  border: 1px solid rgb(160 176 192 / 25%);
  padding: 0.5rem;
  background: rgb(30 42 58 / 40%);
}

.page-about .about-capabilities__features h3 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: 0.04em;
  color: var(--color-white);
  margin-bottom: 1rem;
}

.page-about .about-capabilities__list {
  list-style: none;
  padding: 0;
  margin: 0 0 1.25rem;
  display: grid;
  gap: 0.68rem;
}

.page-about .about-capabilities__list li {
  position: relative;
  padding-left: 1.4rem;
  color: rgb(224 230 237 / 86%);
  font-size: 0.92rem;
}

.page-about .about-capabilities__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6rem;
  width: 0.7rem;
  height: 2px;
  background: var(--color-warning);
  box-shadow: 0 4px 0 rgb(255 106 0 / 30%);
}

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

.page-about .about-commitment__item {
  position: relative;
  background: linear-gradient(135deg, rgb(30 42 58 / 75%), rgb(22 35 55 / 90%));
  border: 1px solid rgb(160 176 192 / 18%);
  padding: 1.4rem 1.4rem 1.6rem;
}

.page-about .about-commitment__item-tag {
  display: inline-block;
  background: var(--color-warning);
  color: var(--color-bg);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  padding: 0.18rem 0.5rem;
  border-radius: 2px;
  margin-bottom: 0.9rem;
}

.page-about .about-commitment__item h3 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.08rem;
  letter-spacing: 0.04em;
  color: var(--color-accent);
  margin-bottom: 0.55rem;
}

.page-about .about-commitment__item p {
  font-size: 0.9rem;
  color: rgb(224 230 237 / 80%);
}

.page-about .about-commitment__figure {
  position: relative;
  margin-top: 2.5rem;
  border: 1px solid rgb(160 176 192 / 25%);
  padding: 0.5rem;
  background: rgb(30 42 58 / 40%);
}

.page-about .about-cta {
  border-top: 1px solid rgb(160 176 192 / 18%);
  background: linear-gradient(180deg, transparent, rgb(42 92 170 / 14%));
}

.page-about .about-cta__inner {
  display: grid;
  gap: 1.8rem;
  padding-block: clamp(2.5rem, 6vw, 4rem);
}

.page-about .about-cta__kicker {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  color: var(--color-warning);
  margin-bottom: 0.5rem;
}

.page-about .about-cta__copy h2 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.5rem, 4vw, 2.2rem);
  color: var(--color-white);
  line-height: 1.2;
}

.page-about .about-cta__copy p:last-child {
  color: var(--color-muted);
  margin-top: 0.6rem;
}

.page-about .about-cta__links {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.9rem;
}

.page-about .about-cta__link {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  gap: 0.25rem;
  background: rgb(22 35 55 / 70%);
  border: 1px solid rgb(160 176 192 / 20%);
  padding: 1.1rem 1.2rem;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1rem;
  color: var(--color-white);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.page-about .about-cta__link::before {
  content: "→";
  position: absolute;
  right: 0.9rem;
  top: 0.8rem;
  font-family: var(--font-mono);
  color: var(--color-accent);
  font-size: 0.9rem;
}

.page-about .about-cta__link small {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 0.8rem;
  color: var(--color-muted);
}

.page-about .about-cta__link:hover,
.page-about .about-cta__link:focus-visible {
  border-color: var(--color-accent);
  transform: translateY(-3px);
}

@media (min-width: 720px) {
  .page-about .about-stats__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
  }

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

@media (min-width: 860px) {
  .page-about .about-hero__layout {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: center;
    gap: 2.5rem;
  }

  .page-about .about-vision__layout {
    grid-template-columns: 1.4fr 0.9fr;
    gap: 2.5rem;
  }

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

  .page-about .about-cta__inner {
    grid-template-columns: 1fr 1.25fr;
    align-items: center;
  }
}

@media (min-width: 920px) {
  .page-about .about-milestones__layout {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
    gap: 2.5rem;
  }

  .page-about .about-capabilities__lower {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
    align-items: center;
    gap: 2.5rem;
  }
}

@media (min-width: 1080px) {
  .page-about .about-hero__title {
    font-size: 3.8rem;
  }
}