.page-about {
  --about-glow-purple: rgba(164, 76, 255, 0.12);
  --about-glow-blue: rgba(0, 212, 255, 0.08);
  --about-line: rgba(138, 147, 166, 0.14);
  --about-line-strong: rgba(164, 76, 255, 0.22);
  --about-mountain-height: 120px;
  position: relative;
  background: var(--bg-dark);
}

/* ========== Hero ========== */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--header-h) + 3.5rem) 0 3.5rem;
  background:
    radial-gradient(ellipse 60% 45% at 85% 15%, var(--about-glow-purple), transparent 70%),
    radial-gradient(ellipse 45% 35% at 10% 85%, var(--about-glow-blue), transparent 70%),
    var(--bg-dark);
}

.page-about .about-hero::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: var(--about-mountain-height);
  pointer-events: none;
  background:
    linear-gradient(155deg, transparent 40%, rgba(164, 76, 255, 0.06) 41%, rgba(164, 76, 255, 0.06) 46%, transparent 47%),
    linear-gradient(200deg, transparent 34%, rgba(0, 212, 255, 0.05) 35%, rgba(0, 212, 255, 0.05) 42%, transparent 43%),
    linear-gradient(225deg, transparent 48%, rgba(164, 76, 255, 0.04) 49%, rgba(164, 76, 255, 0.04) 56%, transparent 57%),
    linear-gradient(180deg, transparent 60%, var(--bg-dark) 100%);
}

.page-about .about-hero__grid {
  display: grid;
  gap: 2.5rem;
  position: relative;
  z-index: 1;
}

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

.page-about .about-hero__note {
  color: var(--accent-blue);
  opacity: 0.75;
}

.page-about .about-hero__title {
  font-size: var(--text-h1);
  line-height: 1.18;
  margin: 1rem 0 1.5rem;
  letter-spacing: 0.01em;
  max-width: 14em;
}

.page-about .about-hero__lead {
  color: var(--text-dim);
  font-size: 1.05rem;
  line-height: 1.8;
  max-width: 56em;
  margin-bottom: 1.5rem;
}

.page-about .about-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.page-about .about-hero__figure {
  width: 100%;
  max-width: 420px;
  margin: 0 auto;
}

.page-about .about-hero__slogan {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3.5vw, 2.3rem);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-align: right;
  margin-top: 2.5rem;
  position: relative;
  z-index: 1;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ========== Brand Overview ========== */
.page-about .about-overview {
  padding: 4rem 0;
  border-top: 1px solid var(--about-line-strong);
  background: linear-gradient(180deg, rgba(164, 76, 255, 0.03), transparent 35%);
}

.page-about .about-overview__body {
  margin-top: 1.5rem;
  display: grid;
  gap: 1.25rem;
}

.page-about .about-overview__body p {
  color: var(--text-main);
  line-height: 1.9;
  font-size: 1rem;
  max-width: 62em;
}

.page-about .about-overview__body p + p {
  color: var(--text-dim);
}

.page-about .about-overview__landscape {
  position: relative;
  margin-top: 3rem;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--about-line);
}

.page-about .about-overview__landscape img {
  display: block;
  width: 100%;
  height: auto;
  min-height: 180px;
  max-height: 260px;
  object-fit: cover;
  object-position: center 35%;
}

.page-about .about-overview__landscape figcaption {
  position: absolute;
  left: 1rem;
  bottom: 0.75rem;
  font-family: var(--font-mono);
  font-size: var(--text-small);
  color: var(--text-main);
  background: rgba(10, 11, 16, 0.72);
  padding: 0.4rem 0.9rem;
  border-left: 2px solid var(--accent-purple);
  border-radius: 0 var(--radius) var(--radius) 0;
}

/* ========== Timeline ========== */
.page-about .about-timeline {
  padding: 4rem 0;
  border-top: 1px solid rgba(0, 212, 255, 0.12);
  background: linear-gradient(180deg, rgba(0, 212, 255, 0.03), transparent 40%);
}

.page-about .about-timeline__list {
  list-style: none;
  margin: 2rem 0 0;
  padding: 0;
  position: relative;
}

.page-about .about-timeline__list::before {
  content: '';
  position: absolute;
  left: 16px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--accent-purple), var(--accent-blue) 70%, transparent);
  opacity: 0.35;
}

.page-about .about-timeline__item {
  display: grid;
  grid-template-columns: 32px 1fr;
  column-gap: 1rem;
  padding: 1.5rem 0;
  position: relative;
}

.page-about .about-timeline__year {
  grid-column: 2;
  grid-row: 1;
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  margin-bottom: 0.35rem;
}

.page-about .about-timeline__year-num {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-style: italic;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-about .about-timeline__year-label {
  font-family: var(--font-mono);
  font-size: var(--text-small);
  color: var(--accent-purple);
  letter-spacing: 0.04em;
}

.page-about .about-timeline__marker {
  grid-column: 1;
  grid-row: 1 / span 2;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--accent-purple);
  border-radius: 50%;
  background: var(--bg-dark);
  color: var(--accent-blue);
  position: relative;
  z-index: 1;
}

.page-about .about-timeline__marker svg {
  width: 18px;
  height: 18px;
}

.page-about .about-timeline__card {
  grid-column: 2;
  grid-row: 2;
  background: var(--bg-panel);
  border: 1px solid var(--about-line);
  border-left: 2px solid var(--accent-purple);
  border-radius: var(--radius);
  padding: 1.25rem 1.25rem 1.15rem;
  transition: border-color var(--ease), transform var(--ease);
}

.page-about .about-timeline__card:hover {
  border-color: rgba(164, 76, 255, 0.45);
  transform: translateX(3px);
}

.page-about .about-timeline__card p {
  margin: 0;
  font-size: var(--text-body);
  line-height: 1.8;
  color: var(--text-dim);
}

/* ========== Capability ========== */
.page-about .about-capability {
  padding: 4rem 0;
  border-top: 1px solid var(--about-line-strong);
  background:
    radial-gradient(ellipse 70% 50% at 50% 100%, rgba(164, 76, 255, 0.06), transparent 70%),
    var(--bg-dark);
}

.page-about .about-capability__head {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
}

.page-about .about-capability__heading {
  flex: 1;
  min-width: 0;
}

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

.page-about .about-capability__stat-grid .stat-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.25rem;
  background: var(--bg-panel);
  border: 1px solid var(--about-line);
  border-radius: var(--radius);
  padding: 1.5rem 1.25rem 1.25rem;
  overflow: hidden;
}

.page-about .about-capability__stat-grid .stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-accent);
}

.page-about .about-capability__stat-grid .stat-card__value {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.1;
  color: var(--text-main);
}

.page-about .about-capability__stat-grid .stat-card__unit {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--accent-yellow);
  margin-left: 0.15rem;
}

.page-about .about-capability__stat-grid .stat-card__label {
  font-size: var(--text-small);
  color: var(--text-dim);
  letter-spacing: 0.03em;
}

.page-about .about-capability__update {
  margin-top: 1.5rem;
  background: var(--bg-panel);
  border: 1px solid var(--about-line);
  border-radius: var(--radius);
  padding: 1.75rem 1.5rem;
}

.page-about .about-capability__update-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-main);
  margin: 0 0 1rem;
}

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

.page-about .about-capability__update-item {
  display: flex;
  align-items: flex-start;
  gap: 0.9rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid rgba(138, 147, 166, 0.08);
}

.page-about .about-capability__update-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.page-about .about-capability__update-item:first-child {
  padding-top: 0;
}

.page-about .about-capability__update-item p {
  margin: 0;
  flex: 1;
  font-size: var(--text-small);
  line-height: 1.6;
  color: var(--text-dim);
}

.page-about .about-capability__update-item .data-tag {
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.page-about .about-capability__visual {
  margin-top: 1.5rem;
}

.page-about .about-capability__visual img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--about-line);
  object-fit: cover;
}

.page-about .about-capability__visual figcaption {
  margin-top: 0.5rem;
  font-family: var(--font-mono);
  font-size: var(--text-small);
  color: var(--text-dim);
  padding-left: 0.75rem;
  border-left: 2px solid var(--accent-blue);
}

/* ========== Quality ========== */
.page-about .about-quality {
  padding: 4rem 0;
  border-top: 1px solid rgba(0, 212, 255, 0.12);
  background: linear-gradient(180deg, rgba(0, 212, 255, 0.03), transparent 35%);
}

.page-about .about-quality__steps {
  display: grid;
  gap: 1.25rem;
  margin-top: 2rem;
}

.page-about .about-quality__step {
  position: relative;
  background: rgba(18, 20, 29, 0.72);
  border: 1px solid var(--about-line);
  border-radius: var(--radius);
  padding: 1.5rem 1.25rem 1.25rem;
  transition: border-color var(--ease);
}

.page-about .about-quality__step:hover {
  border-color: rgba(0, 212, 255, 0.35);
}

.page-about .about-quality__step-num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--text-mono-lg);
  font-weight: 700;
  color: var(--accent-purple);
  margin-bottom: 0.5rem;
}

.page-about .about-quality__step-title {
  font-size: 1.12rem;
  color: var(--text-main);
  margin: 0 0 0.6rem;
}

.page-about .about-quality__step-desc {
  margin: 0;
  font-size: var(--text-small);
  line-height: 1.75;
  color: var(--text-dim);
}

.page-about .about-quality__note {
  margin: 2rem 0 0;
  padding: 1.25rem 1.5rem;
  border-left: 3px solid var(--accent-blue);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: rgba(0, 212, 255, 0.05);
}

.page-about .about-quality__note p {
  margin: 0;
  font-size: var(--text-small);
  line-height: 1.85;
  color: var(--text-dim);
}

.page-about .about-quality__teams {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-top: 2rem;
  padding: 1.5rem;
  border: 1px dashed rgba(164, 76, 255, 0.3);
  border-radius: var(--radius);
  background: rgba(164, 76, 255, 0.03);
}

.page-about .about-quality__team-num {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1;
  color: var(--text-main);
  flex-shrink: 0;
}

.page-about .about-quality__team-num span {
  color: var(--accent-yellow);
  font-size: 1.25rem;
  margin-left: 0.1rem;
}

.page-about .about-quality__team-info {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.page-about .about-quality__team-info strong {
  color: var(--text-main);
  font-size: 1rem;
}

.page-about .about-quality__team-info span {
  color: var(--text-dim);
  font-size: var(--text-small);
  line-height: 1.65;
}

.page-about .about-quality__cert {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.5rem;
}

/* ========== Connect CTA ========== */
.page-about .about-connect {
  padding: 3rem 0 4rem;
  border-top: 1px solid var(--about-line-strong);
}

.page-about .about-connect__inner {
  position: relative;
  overflow: hidden;
  background: var(--gradient-deep);
  border: 1px solid rgba(164, 76, 255, 0.2);
  border-radius: var(--radius);
  padding: 3rem 1.5rem;
  text-align: center;
}

.page-about .about-connect__inner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-accent);
}

.page-about .about-connect__inner::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: -40%;
  width: 120%;
  height: 60%;
  transform: translateX(-50%);
  background: radial-gradient(ellipse 50% 60% at 50% 100%, rgba(164, 76, 255, 0.15), transparent 70%);
  pointer-events: none;
}

.page-about .about-connect__title {
  font-size: var(--text-h3);
  color: var(--text-main);
  margin: 0 0 0.75rem;
  position: relative;
  z-index: 1;
}

.page-about .about-connect__desc {
  color: var(--text-dim);
  margin: 0 auto 1.75rem;
  max-width: 34em;
  line-height: 1.7;
  position: relative;
  z-index: 1;
}

.page-about .about-connect__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  position: relative;
  z-index: 1;
}

/* ========== Media: ≥768px ========== */
@media (min-width: 768px) {
  .page-about .about-hero {
    padding-bottom: 4rem;
  }

  .page-about .about-hero__grid {
    grid-template-columns: 1fr 260px;
    align-items: center;
    gap: 2.5rem;
  }

  .page-about .about-hero__figure {
    max-width: none;
  }

  .page-about .about-overview__landscape img {
    max-height: 300px;
  }

  .page-about .about-timeline__item {
    grid-template-columns: 108px 48px 1fr;
    column-gap: 1.5rem;
    padding: 1.75rem 0;
  }

  .page-about .about-timeline__list::before {
    left: 156px;
  }

  .page-about .about-timeline__year {
    grid-column: 1;
    grid-row: 1;
    display: block;
    text-align: right;
    position: sticky;
    top: calc(var(--header-h) + 1.5rem);
    z-index: 2;
  }

  .page-about .about-timeline__year-num {
    font-size: 2.2rem;
  }

  .page-about .about-timeline__year-label {
    display: block;
    margin-top: 0.4rem;
  }

  .page-about .about-timeline__marker {
    grid-column: 2;
    grid-row: 1;
    width: 40px;
    height: 40px;
  }

  .page-about .about-timeline__marker svg {
    width: 22px;
    height: 22px;
  }

  .page-about .about-timeline__card {
    grid-column: 3;
    grid-row: 1;
    padding: 1.5rem 1.75rem;
  }

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

  .page-about .about-quality__steps {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
  }

  .page-about .about-quality__step {
    padding: 1.75rem 1.5rem 1.5rem;
  }
}

/* ========== Media: ≥1024px ========== */
@media (min-width: 1024px) {
  .page-about .about-hero {
    padding-top: calc(var(--header-h) + 4.5rem);
    padding-bottom: 5rem;
  }

  .page-about .about-hero__grid {
    grid-template-columns: 1.25fr 0.75fr;
    gap: 4rem;
  }

  .page-about .about-hero__note {
    position: absolute;
    right: -2rem;
    top: 2rem;
    color: var(--accent-blue);
    opacity: 0.85;
  }

  .page-about .about-hero__title {
    margin-top: 1.25rem;
  }

  .page-about .about-hero__slogan {
    margin-top: 3.5rem;
  }

  .page-about .about-overview {
    padding-top: 5rem;
    padding-bottom: 5rem;
  }

  .page-about .about-overview__body {
    margin-top: 1.75rem;
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .page-about .about-overview__landscape {
    margin-top: 3.5rem;
  }

  .page-about .about-overview__landscape img {
    max-height: 340px;
  }

  .page-about .about-timeline {
    padding-top: 5rem;
    padding-bottom: 5rem;
  }

  .page-about .about-timeline__item {
    grid-template-columns: 120px 48px 1fr;
    column-gap: 2rem;
  }

  .page-about .about-timeline__list::before {
    left: 168px;
  }

  .page-about .about-timeline__year-num {
    font-size: 2.5rem;
  }

  .page-about .about-capability {
    padding-top: 5rem;
    padding-bottom: 5rem;
  }

  .page-about .about-capability__wrap {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 2.5rem;
    align-items: start;
    margin-top: 2rem;
  }

  .page-about .about-capability__stats {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .page-about .about-capability__stat-grid {
    margin-top: 0;
  }

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

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

  .page-about .about-capability__visual img {
    min-height: 420px;
    max-height: 520px;
    object-fit: cover;
  }

  .page-about .about-quality {
    padding-top: 5rem;
    padding-bottom: 5rem;
  }

  .page-about .about-quality__steps {
    margin-top: 2.5rem;
  }

  .page-about .about-connect {
    padding-top: 3.5rem;
    padding-bottom: 5rem;
  }

  .page-about .about-connect__inner {
    padding: 4rem 3rem;
  }
}

/* ========== Media: ≥1280px ========== */
@media (min-width: 1280px) {
  .page-about .about-hero__grid {
    gap: 5rem;
  }

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

  .page-about .about-capability__wrap {
    gap: 3rem;
  }
}

/* ========== Reduced motion ========== */
@media (prefers-reduced-motion: reduce) {
  .page-about .about-timeline__card,
  .page-about .about-quality__step {
    transition: none;
    transform: none;
  }
}