.page-about {
  background: var(--bg-deep);
  color: var(--text-light);
  font-family: var(--font-body);
  overflow-x: hidden;
}

/* ---------- 1. Hero ---------- */
.page-about .about-hero {
  position: relative;
  padding: 56px 0 88px;
  background:
    radial-gradient(circle at 78% 18%, rgba(255, 107, 53, 0.22), transparent 40%),
    radial-gradient(circle at 8% 88%, rgba(57, 255, 20, 0.08), transparent 30%),
    linear-gradient(135deg, var(--bg-deeper) 0%, var(--bg-deep) 58%, #172541 100%);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 40%;
  height: 6px;
  background: linear-gradient(90deg, var(--accent-orange) 0%, var(--accent-lime) 100%);
  clip-path: polygon(6% 0, 100% 0, 100% 100%, 0 100%);
}

.page-about .about-hero .breadcrumbs {
  margin-bottom: 64px;
}

.page-about .about-hero .breadcrumbs ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.page-about .about-hero .breadcrumbs li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-data);
  font-size: 0.78rem;
  color: var(--text-muted);
}

.page-about .about-hero .breadcrumbs li + li::before {
  content: "/";
  color: var(--accent-orange);
}

.page-about .about-hero .breadcrumbs a {
  color: var(--text-muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease);
}

.page-about .about-hero .breadcrumbs a:hover,
.page-about .about-hero .breadcrumbs a:focus-visible {
  color: var(--text-light);
  border-bottom-color: var(--accent-lime);
}

.page-about .about-hero .breadcrumbs [aria-current="page"] {
  color: var(--text-light);
}

.page-about .about-hero__grid {
  display: grid;
  gap: 48px;
  align-items: center;
}

.page-about .about-hero .kicker {
  color: var(--accent-lime);
  letter-spacing: 0.08em;
}

.page-about .about-hero__title {
  font-family: var(--font-head);
  font-size: clamp(2.55rem, 7vw, 5.2rem);
  line-height: 0.98;
  letter-spacing: -0.02em;
  margin: 20px 0 28px;
  color: var(--text-light);
}

.page-about .about-hero__title-main {
  display: block;
}

.page-about .about-hero__title-sep {
  display: block;
  font-size: 0.42em;
  line-height: 1;
  color: var(--accent-orange);
  margin: 6px 0 2px;
}

.page-about .about-hero__title-sub {
  display: block;
  color: var(--accent-orange);
}

.page-about .about-hero__lead {
  max-width: 58ch;
  font-size: 1.02rem;
  line-height: 1.85;
  color: var(--text-muted);
  margin: 0 0 40px;
}

.page-about .about-hero__stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.page-about .about-stat {
  background: var(--bg-card);
  border-left: 3px solid var(--accent-orange);
  padding: 16px 18px;
  min-width: 0;
}

.page-about .about-stat strong {
  display: block;
  font-family: var(--font-data);
  font-size: 1.55rem;
  line-height: 1.1;
  color: var(--text-light);
  white-space: nowrap;
}

.page-about .about-stat span {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 6px;
}

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

.page-about .about-hero__figure {
  margin: 0;
  position: relative;
}

.page-about .about-hero__figure::before {
  content: "";
  position: absolute;
  inset: -12px 12px 12px -12px;
  border: 2px solid var(--accent-lime);
  clip-path: polygon(0 6%, 94% 0, 100% 92%, 8% 100%);
  z-index: 0;
  pointer-events: none;
}

.page-about .about-hero__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 5 / 4;
  object-fit: cover;
  max-width: 100%;
  clip-path: polygon(0 6%, 94% 0, 100% 92%, 8% 100%);
  position: relative;
  z-index: 1;
}

.page-about .about-hero__caption {
  margin: 24px 0 0;
  padding-left: 16px;
  border-left: 2px solid var(--accent-orange);
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--text-muted);
  max-width: 40ch;
}

/* ---------- 2. Section head ---------- */
.page-about .about-section__head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px 28px;
  align-items: end;
  border-bottom: 1px solid var(--line-light);
  padding-bottom: 24px;
}

.page-about .about-section__index {
  font-family: var(--font-data);
  font-weight: 700;
  font-size: clamp(2.4rem, 5vw, 4.6rem);
  line-height: 0.95;
  color: var(--bg-deep);
  background: var(--accent-orange);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 1.05em;
  min-width: 1.5em;
  clip-path: polygon(0 0, 100% 0, 100% 74%, 84% 100%, 0 100%);
  padding-right: 0.15em;
  letter-spacing: -0.03em;
}

.page-about .about-section__heading .kicker {
  margin: 0 0 6px;
  font-family: var(--font-data);
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.page-about .about-section__heading h2 {
  font-family: var(--font-head);
  font-size: clamp(1.7rem, 4vw, 3.1rem);
  line-height: 1;
  margin: 0;
  letter-spacing: -0.01em;
}

/* ---------- 3. Position section ---------- */
.page-about .about-position {
  background:
    linear-gradient(180deg, var(--bg-light) 0%, #ffffff 100%);
  color: var(--text-deep);
  padding: 88px 0 100px;
}

.page-about .about-position .about-section__heading h2,
.page-about .about-position .about-section__heading .kicker {
  color: var(--text-deep);
}

.page-about .about-position .about-section__heading .kicker {
  opacity: 0.6;
}

.page-about .about-position__intro {
  font-size: clamp(1.05rem, 1.8vw, 1.35rem);
  line-height: 1.7;
  max-width: 62ch;
  margin: 40px 0 56px;
  color: var(--text-deep);
}

.page-about .about-position__grid {
  display: grid;
  gap: 18px;
}

.page-about .about-policy {
  position: relative;
  background: var(--bg-light);
  padding: 28px 22px 34px;
  border-top: 4px solid var(--bg-card);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
  min-width: 0;
}

.page-about .about-policy:hover {
  border-top-color: var(--accent-orange);
  box-shadow: -8px 8px 0 #d7dde5;
  transform: translate(2px, -2px);
}

.page-about .about-policy--deep {
  background: var(--bg-deep);
  border-top-color: var(--accent-orange);
}

.page-about .about-policy--deep:hover {
  box-shadow: -8px 8px 0 var(--accent-orange);
}

.page-about .about-policy__index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  margin-bottom: 22px;
  background: var(--bg-deep);
  color: var(--accent-lime);
  font-family: var(--font-data);
  font-weight: 800;
  font-size: 1rem;
  clip-path: polygon(8% 0, 100% 0, 100% 82%, 82% 100%, 0 100%, 0 18%);
}

.page-about .about-policy--deep .about-policy__index {
  background: var(--accent-orange);
  color: var(--bg-deep);
}

.page-about .about-policy h3 {
  font-family: var(--font-body);
  font-weight: 800;
  font-size: 1.08rem;
  line-height: 1.4;
  margin: 0 0 12px;
  color: var(--bg-deep);
}

.page-about .about-policy p {
  font-size: 0.95rem;
  line-height: 1.7;
  margin: 0;
  color: var(--text-deep);
}

.page-about .about-policy--deep h3,
.page-about .about-policy--deep p {
  color: var(--text-light);
}

/* ---------- 4. History / timeline ---------- */
.page-about .about-history {
  position: relative;
  padding: 88px 0 100px;
  background:
    linear-gradient(180deg, var(--bg-deep) 0%, var(--bg-deeper) 100%);
  color: var(--text-light);
  overflow: hidden;
}

.page-about .about-history::before {
  content: "";
  position: absolute;
  top: -80px;
  left: -60px;
  width: 280px;
  height: 280px;
  background: radial-gradient(circle, rgba(57, 255, 20, 0.1) 0%, transparent 70%);
  pointer-events: none;
}

.page-about .about-history .about-section__head {
  border-bottom-color: rgba(242, 244, 247, 0.16);
}

.page-about .about-history .about-section__heading h2 {
  color: var(--text-light);
}

.page-about .about-history .about-section__heading .kicker {
  color: var(--accent-lime);
}

.page-about .about-history__intro {
  max-width: 58ch;
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--text-muted);
  margin: 36px 0 56px;
}

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

.page-about .about-timeline__list::before {
  content: "";
  position: absolute;
  left: 19px;
  top: 26px;
  bottom: 26px;
  width: 2px;
  background: repeating-linear-gradient(180deg, var(--accent-lime) 0 6px, transparent 6px 14px);
  opacity: 0.55;
}

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 48px 60px;
  min-width: 0;
}

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

.page-about .about-timeline__node {
  position: absolute;
  left: 0;
  top: 6px;
  width: 42px;
  height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-deep);
  border: 2px solid var(--accent-lime);
  color: var(--accent-orange);
  font-family: var(--font-data);
  font-weight: 800;
  font-size: 1rem;
  clip-path: polygon(50% 0, 100% 38%, 82% 100%, 18% 100%, 0 38%);
}

.page-about .about-timeline__body h3 {
  font-family: var(--font-head);
  font-size: 1.12rem;
  line-height: 1.3;
  margin: 0 0 8px;
  color: var(--text-light);
}

.page-about .about-timeline__body p {
  max-width: 32ch;
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.7;
  color: var(--text-muted);
}

.page-about .about-history__visual {
  margin-top: 64px;
  position: relative;
}

.page-about .about-history__visual img {
  display: block;
  width: 100%;
  height: auto;
  clip-path: polygon(0 18px, 100% 0, 100% calc(100% - 18px), 0 100%);
}

.page-about .about-history__visual::after {
  content: "V1 → V7";
  position: absolute;
  right: 16px;
  top: -16px;
  padding: 7px 16px;
  background: var(--accent-orange);
  color: var(--bg-deep);
  font-family: var(--font-data);
  font-weight: 800;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  clip-path: polygon(0 0, 100% 0, 92% 100%, 8% 100%);
}

/* ---------- 5. Capability ---------- */
.page-about .about-capability {
  background: var(--bg-light);
  color: var(--text-deep);
  padding: 88px 0 100px;
}

.page-about .about-capability .about-section__heading h2,
.page-about .about-capability .about-section__heading .kicker {
  color: var(--text-deep);
}

.page-about .about-capability .about-section__heading .kicker {
  opacity: 0.6;
}

.page-about .about-capability__grid {
  display: grid;
  gap: 48px;
  margin-top: 56px;
}

.page-about .about-archive h3,
.page-about .about-update h3 {
  position: relative;
  font-family: var(--font-head);
  font-size: 1.35rem;
  line-height: 1.2;
  margin: 0 0 28px;
  padding-left: 16px;
}

.page-about .about-archive h3::before,
.page-about .about-update h3::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 5px;
  background: var(--accent-orange);
}

.page-about .about-archive__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-archive__item {
  display: grid;
  grid-template-columns: minmax(120px, 0.9fr) 1.4fr;
  align-items: baseline;
  gap: 14px;
  padding: 18px 4px;
  border-bottom: 1px solid var(--line-light);
}

.page-about .about-archive__num {
  font-family: var(--font-data);
  font-weight: 800;
  font-size: 1.6rem;
  line-height: 1;
  color: var(--accent-orange);
  white-space: nowrap;
}

.page-about .about-archive__label {
  font-size: 0.95rem;
  color: var(--text-deep);
}

.page-about .about-update {
  background: var(--bg-deep);
  color: var(--text-light);
  padding: 36px 28px 40px;
  clip-path: polygon(4% 0, 100% 0, 100% 94%, 0 100%);
}

.page-about .about-update h3 {
  color: var(--text-light);
}

.page-about .about-update h3::before {
  background: var(--accent-lime);
}

.page-about .about-update__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-update__item {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  padding: 22px 0;
  border-bottom: 1px solid rgba(242, 244, 247, 0.14);
}

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

.page-about .about-update__step {
  flex: 0 0 44px;
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-orange);
  color: var(--bg-deep);
  font-family: var(--font-data);
  font-weight: 800;
  font-size: 1.05rem;
  clip-path: polygon(50% 0, 100% 38%, 82% 100%, 18% 100%, 0 38%);
}

.page-about .about-update__item strong {
  display: block;
  font-family: var(--font-data);
  font-size: 0.96rem;
  letter-spacing: 0.02em;
  color: var(--accent-lime);
  margin-bottom: 5px;
}

.page-about .about-update__item p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--text-muted);
}

/* ---------- 6. Team ---------- */
.page-about .about-team {
  padding: 88px 0 100px;
  background:
    radial-gradient(circle at 18% 30%, rgba(57, 255, 20, 0.09), transparent 36%),
    linear-gradient(160deg, var(--bg-deeper) 0%, var(--bg-deep) 70%);
  color: var(--text-light);
}

.page-about .about-team .about-section__head {
  border-bottom-color: rgba(242, 244, 247, 0.16);
}

.page-about .about-team .about-section__heading h2 {
  color: var(--text-light);
}

.page-about .about-team .about-section__heading .kicker {
  color: var(--accent-lime);
}

.page-about .about-team__layout {
  display: grid;
  gap: 48px;
  margin-top: 56px;
  align-items: center;
}

.page-about .about-team__visual img {
  display: block;
  width: 100%;
  height: auto;
  clip-path: polygon(0 10%, 90% 0, 100% 84%, 12% 100%);
  filter: drop-shadow(18px 18px 0 rgba(255, 107, 53, 0.22));
}

.page-about .about-team__list {
  display: grid;
  gap: 18px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-team__role {
  position: relative;
  background: var(--bg-card);
  padding: 26px 22px 30px;
  border-left: 4px solid var(--accent-lime);
  min-width: 0;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .about-team__role:hover {
  transform: translateY(-3px);
  box-shadow: 10px 10px 0 rgba(255, 255, 255, 0.05);
}

.page-about .about-team__role h3 {
  font-family: var(--font-data);
  font-size: 0.95rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-lime);
  margin: 0 0 8px;
}

.page-about .about-team__role p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--text-light);
}

.page-about .about-team__role:nth-child(2) {
  border-left-color: var(--accent-orange);
}

.page-about .about-team__role:nth-child(2) h3 {
  color: var(--accent-orange);
}

.page-about .about-team__role:nth-child(3) {
  border-left-color: var(--accent-teal);
}

.page-about .about-team__role:nth-child(3) h3 {
  color: var(--accent-teal);
}

.page-about .about-team__role:nth-child(4) {
  border-left-color: var(--accent-yellow);
}

.page-about .about-team__role:nth-child(4) h3 {
  color: var(--accent-yellow);
}

.page-about .about-team__note {
  max-width: 58ch;
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--text-muted);
  margin: 28px 0 0;
}

/* ---------- 7. Credential ---------- */
.page-about .about-credential {
  background: var(--bg-light);
  color: var(--text-deep);
  padding: 88px 0 100px;
}

.page-about .about-credential .about-section__heading h2,
.page-about .about-credential .about-section__heading .kicker {
  color: var(--text-deep);
}

.page-about .about-credential .about-section__heading .kicker {
  opacity: 0.6;
}

.page-about .about-credential__intro {
  max-width: 62ch;
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--text-deep);
  margin: 36px 0 48px;
}

.page-about .about-credential__grid {
  display: grid;
  gap: 22px;
}

.page-about .about-cert {
  position: relative;
  background: #ffffff;
  border: 1px solid var(--line-light);
  border-top: 6px solid var(--bg-deep);
  padding: 34px 28px 38px;
  min-width: 0;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .about-cert:hover {
  transform: translate(-4px, -4px);
  box-shadow: 12px 12px 0 var(--bg-card);
}

.page-about .about-cert:nth-child(1) {
  border-top-color: var(--accent-orange);
}

.page-about .about-cert:nth-child(2) {
  border-top-color: var(--accent-lime);
}

.page-about .about-cert:nth-child(3) {
  border-top-color: var(--accent-yellow);
}

.page-about .about-cert__code {
  display: inline-block;
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: var(--accent-orange);
  border-bottom: 2px solid var(--accent-orange);
  padding-bottom: 6px;
  margin-bottom: 22px;
}

.page-about .about-cert:nth-child(2) .about-cert__code {
  color: var(--bg-deep);
  border-bottom-color: var(--accent-lime);
}

.page-about .about-cert:nth-child(3) .about-cert__code {
  color: var(--accent-orange);
  border-bottom-color: var(--accent-yellow);
}

.page-about .about-cert h3 {
  font-family: var(--font-head);
  font-size: 1.18rem;
  line-height: 1.2;
  margin: 0 0 12px;
  color: var(--bg-deep);
}

.page-about .about-cert p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--text-deep);
}

/* ---------- 8. Next / CTA ---------- */
.page-about .about-next {
  padding: 88px 0;
  background: linear-gradient(135deg, var(--bg-deeper) 0%, var(--bg-deep) 100%);
  color: var(--text-light);
}

.page-about .about-next__inner {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.page-about .about-next .kicker {
  color: var(--accent-lime);
  letter-spacing: 0.12em;
}

.page-about .about-next__inner h2 {
  font-family: var(--font-head);
  font-size: clamp(1.8rem, 4vw, 3rem);
  line-height: 1.05;
  margin: 18px 0 14px;
  color: var(--text-light);
}

.page-about .about-next__inner p {
  color: var(--text-muted);
  margin: 0 auto 36px;
  max-width: 46ch;
  font-size: 1rem;
  line-height: 1.75;
}

.page-about .about-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
}

/* ---------- 9. Mobile-first media query expansions ---------- */
@media (min-width: 640px) {
  .page-about .about-position__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-about .about-credential__grid .about-cert:last-child {
    grid-column: 1 / -1;
  }

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

@media (min-width: 860px) {
  .page-about .about-hero {
    padding: 72px 0 110px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: 7fr 5fr;
    gap: 64px;
  }

  .page-about .about-hero__stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }

  .page-about .about-history__intro,
  .page-about .about-credential__intro {
    margin-bottom: 72px;
  }

  .page-about .about-timeline__list {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 22px;
  }

  .page-about .about-timeline__list::before {
    left: 0;
    right: 0;
    top: 21px;
    bottom: auto;
    width: auto;
    height: 3px;
    background: repeating-linear-gradient(90deg, var(--accent-lime) 0 10px, transparent 10px 22px);
    opacity: 0.55;
  }

  .page-about .about-timeline__item {
    padding: 60px 0 0;
  }

  .page-about .about-timeline__node {
    left: 50%;
    top: 0;
    transform: translateX(-50%);
  }

  .page-about .about-timeline__body p {
    max-width: 100%;
  }

  .page-about .about-capability__grid {
    grid-template-columns: 7fr 5fr;
    gap: 64px;
  }

  .page-about .about-team__layout {
    grid-template-columns: 5fr 7fr;
    gap: 64px;
  }

  .page-about .about-credential__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-credential__grid .about-cert:last-child {
    grid-column: auto;
  }

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

@media (min-width: 1024px) {
  .page-about .about-position,
  .page-about .about-history,
  .page-about .about-capability,
  .page-about .about-team,
  .page-about .about-credential {
    padding: 116px 0 128px;
  }

  .page-about .about-hero__lead {
    font-size: 1.1rem;
  }

  .page-about .about-team__note {
    margin-top: 36px;
  }
}