.page-about {
  --about-num-size: clamp(56px, 8vw, 96px);
  --about-gap: 24px;
  background:
    radial-gradient(ellipse at 88% 8%, rgba(0, 194, 209, 0.07), transparent 52%),
    var(--paper);
  color: var(--ink);
}

.page-about .breadcrumb {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 24px 20px 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--slate);
}
.page-about .breadcrumb a {
  color: inherit;
  text-decoration: none;
  transition: color 0.3s var(--ease);
}
.page-about .breadcrumb a:hover {
  color: var(--cyan);
}
.page-about .breadcrumb__separator {
  margin: 0 8px;
  color: var(--line);
}

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  margin-top: 24px;
  background: linear-gradient(120deg, var(--navy-deep) 0%, var(--navy) 55%, var(--grad-start) 100%);
  color: #fff;
}
.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 44px 44px;
}
.page-about .about-hero::after {
  content: "";
  position: absolute;
  top: -180px;
  right: -120px;
  width: 460px;
  height: 460px;
  pointer-events: none;
  background: radial-gradient(circle, rgba(0, 194, 209, 0.22) 0%, transparent 68%);
}
.page-about .about-hero__container {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 28px;
  padding-top: 44px;
  padding-bottom: 40px;
}
.page-about .about-hero__text {
  max-width: 38em;
}
.page-about .about-hero__kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
}
.page-about .about-hero__title {
  margin: 0 0 18px;
  font-family: var(--font-head);
  font-size: clamp(1.9rem, 5.2vw, 4rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: #fff;
}
.page-about .about-hero__title .nowrap {
  white-space: nowrap;
}
.page-about .about-hero__lead {
  margin: 0 0 26px;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.82);
}
.page-about .about-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 22px 32px;
  margin-top: 4px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
}
.page-about .about-hero__stat strong {
  display: block;
  font-family: var(--font-head);
  font-size: clamp(1.5rem, 3.4vw, 2.4rem);
  line-height: 1.1;
  color: var(--orange);
}
.page-about .about-hero__stat span {
  display: block;
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(255, 255, 255, 0.62);
}
.page-about .about-hero__figure {
  position: relative;
  margin: 0;
}
.page-about .about-hero__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid rgba(255, 255, 255, 0.18);
}
.page-about .about-hero__figure figcaption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--cyan);
}
.page-about .about-hero__edition {
  position: absolute;
  top: 32px;
  right: 4px;
  z-index: 2;
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: rgba(255, 255, 255, 0.3);
}
.page-about .about-hero__index-wrap {
  position: relative;
  z-index: 1;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
}
.page-about .about-hero__index {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  padding: 16px 0;
}
.page-about .about-hero__index a {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  transition: color 0.3s var(--ease);
}
.page-about .about-hero__index a:hover {
  color: var(--orange);
}

.page-about .about-origin,
.page-about .about-milestones,
.page-about .about-philosophy {
  padding: 64px 0;
}
.page-about .about-ops {
  padding: 64px 0 72px;
}

.page-about .section-number {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-size: var(--about-num-size);
  line-height: 1;
  letter-spacing: -0.04em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(10, 31, 68, 0.16);
}
.page-about .section-title {
  display: inline-block;
  margin: 0 0 20px;
  padding-bottom: 12px;
  border-bottom: 3px solid var(--navy);
  font-family: var(--font-head);
  font-size: clamp(1.5rem, 3.6vw, 2.4rem);
  color: var(--navy);
}
.page-about .section-title::selection {
  background: var(--cyan);
  color: #fff;
}

.page-about .about-milestones,
.page-about .about-ops {
  background: var(--card);
}
.page-about .about-milestones {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.page-about .about-ops {
  border-top: 1px solid var(--line);
}

.page-about .about-origin__grid {
  display: grid;
  gap: 32px;
}
.page-about .about-origin__text {
  margin: 0 0 16px;
  max-width: 52em;
  font-size: 15px;
  line-height: 1.9;
  color: var(--ink);
}
.page-about .about-origin__cta {
  margin-top: 8px;
}
.page-about .about-origin__aside {
  display: flex;
  align-items: flex-start;
  justify-content: flex-start;
}
.page-about .about-origin__note {
  writing-mode: horizontal-tb;
  border-bottom: 1px solid var(--line);
  padding: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--slate);
}

.page-about .about-milestones__intro {
  max-width: 40em;
  margin-bottom: 28px;
  color: var(--slate);
  line-height: 1.8;
}
.page-about .about-milestones__figure {
  margin: 0 0 32px;
}
.page-about .about-milestones__figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
}
.page-about .about-milestones__figure figcaption {
  padding-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--slate);
}
.page-about .about-milestones__timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}
.page-about .milestone {
  position: relative;
  border-bottom: 1px solid var(--line);
}
.page-about .milestone:first-child {
  border-top: 1px solid var(--line);
}
.page-about .milestone__summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 0;
  cursor: pointer;
  list-style: none;
}
.page-about .milestone__summary::-webkit-details-marker {
  display: none;
}
.page-about .milestone__period {
  flex-shrink: 0;
  padding: 4px 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--cyan-dark);
  background: rgba(0, 194, 209, 0.1);
}
.page-about .milestone__phase {
  flex: 1;
  font-family: var(--font-head);
  font-size: 18px;
  color: var(--navy);
}
.page-about .milestone__arrow {
  flex-shrink: 0;
  width: 8px;
  height: 8px;
  margin-right: 4px;
  border-right: 2px solid var(--slate);
  border-bottom: 2px solid var(--slate);
  transform: rotate(45deg);
  transition: transform 0.3s var(--ease);
}
.page-about .milestone[open] .milestone__arrow {
  transform: rotate(-135deg);
}
.page-about .milestone__body {
  max-width: 42em;
  padding: 0 0 20px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--slate);
}

.page-about .about-data {
  position: relative;
  overflow: hidden;
  padding: 72px 0;
  background: linear-gradient(135deg, var(--navy-deep) 0%, var(--navy) 65%, var(--grad-start) 100%);
  color: #fff;
}
.page-about .about-data::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 40px 40px;
}
.page-about .about-data__header,
.page-about .about-data__grid,
.page-about .about-data__body {
  position: relative;
  z-index: 1;
}
.page-about .about-data .section-number {
  -webkit-text-stroke-color: rgba(255, 255, 255, 0.2);
}
.page-about .about-data .section-title {
  border-bottom-color: var(--orange);
  color: #fff;
}
.page-about .about-data__lead {
  max-width: 36em;
  margin-top: 16px;
  color: rgba(255, 255, 255, 0.7);
}
.page-about .about-data__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 40px 0;
}
.page-about .data-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
  padding: 20px 16px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.14);
}
.page-about .data-card__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.6);
}
.page-about .data-card__value {
  font-family: var(--font-head);
  font-size: clamp(1.8rem, 6vw, 3rem);
  line-height: 1;
  color: var(--orange);
}
.page-about .data-card__unit {
  font-size: 13px;
  color: var(--cyan);
}
.page-about .about-data__body {
  display: grid;
  gap: 28px;
}
.page-about .about-data__figure {
  margin: 0;
}
.page-about .about-data__figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid rgba(255, 255, 255, 0.18);
}
.page-about .about-data__figure figcaption {
  padding-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(255, 255, 255, 0.55);
}
.page-about .about-data__mech-title {
  margin: 0 0 16px;
  font-family: var(--font-head);
  font-size: 22px;
  color: #fff;
}
.page-about .about-data__list {
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-about .about-data__list li {
  position: relative;
  padding: 12px 0 12px 26px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.82);
  line-height: 1.7;
}
.page-about .about-data__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 21px;
  width: 8px;
  height: 8px;
  background: var(--cyan);
}
.page-about .about-data__note {
  margin: 20px 0 0;
  padding-left: 14px;
  border-left: 3px solid var(--gold);
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.7;
}

.page-about .about-philosophy__lead {
  max-width: 36em;
  margin-bottom: 32px;
  color: var(--slate);
  line-height: 1.8;
}
.page-about .about-philosophy__wrap {
  display: grid;
  gap: 32px;
}
.page-about .about-philosophy__list {
  display: grid;
  gap: 0;
}
.page-about .philosophy-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4px 16px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}
.page-about .philosophy-card:first-child {
  border-top: 1px solid var(--line);
}
.page-about .philosophy-card__index {
  grid-row: span 2;
  font-family: var(--font-head);
  font-size: 30px;
  line-height: 1;
  color: var(--orange);
}
.page-about .philosophy-card__title {
  margin: 0;
  font-family: var(--font-head);
  font-size: 20px;
  color: var(--navy);
}
.page-about .philosophy-card__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--slate);
}
.page-about .about-philosophy__statement {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 16px;
  min-height: 240px;
  padding: 32px;
  background: var(--navy);
  color: #fff;
}
.page-about .about-philosophy__statement::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 48px;
  height: 4px;
  background: var(--orange);
}
.page-about .about-philosophy__statement-text {
  margin: 0;
  font-family: var(--font-head);
  font-size: 22px;
  line-height: 1.4;
}
.page-about .about-philosophy__statement-sub {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-about .about-ops__grid {
  display: grid;
  gap: 20px;
  margin-top: 32px;
}
.page-about .ops-block {
  border-left: 3px solid var(--cyan);
  padding: 2px 0 2px 20px;
}
.page-about .ops-block__title {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 18px;
  color: var(--navy);
}
.page-about .ops-block__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--slate);
}
.page-about .ops-block__btn {
  margin-top: 14px;
}

.page-about .about-cta {
  padding: 48px 0 80px;
}
.page-about .about-cta__container {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
}

@media (max-width: 639px) {
  .page-about .about-hero__edition {
    right: 8px;
  }
  .page-about .about-origin__aside {
    padding-top: 8px;
  }
  .page-about .about-cta__container .btn {
    width: 100%;
  }
}

@media (min-width: 640px) {
  .page-about .about-data__grid {
    gap: 20px;
    padding: 4px;
  }
  .page-about .about-data__body {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }
  .page-about .about-philosophy__wrap {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 960px) {
  .page-about .breadcrumb {
    padding-left: 40px;
    padding-right: 40px;
  }
  .page-about .about-hero__container {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
    gap: 64px;
    padding-top: 72px;
    padding-bottom: 56px;
  }
  .page-about .about-hero__edition {
    top: 40px;
    right: 8px;
  }
  .page-about .about-hero__index {
    gap: 12px 32px;
    padding: 18px 0;
  }
  .page-about .about-origin,
  .page-about .about-milestones,
  .page-about .about-philosophy {
    padding: 88px 0;
  }
  .page-about .about-ops {
    padding: 88px 0 96px;
  }
  .page-about .about-origin__grid {
    grid-template-columns: 1fr 240px;
    gap: 64px;
  }
  .page-about .about-origin__text {
    font-size: 16px;
  }
  .page-about .about-origin__aside {
    justify-content: flex-end;
  }
  .page-about .about-origin__note {
    writing-mode: vertical-rl;
    border-bottom: none;
    border-left: 1px solid var(--line);
    padding: 0 0 0 14px;
    min-height: 220px;
  }
  .page-about .milestone__summary {
    padding: 24px 0;
  }
  .page-about .about-data {
    padding: 88px 0;
  }
  .page-about .about-data__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px;
    margin: 48px 0;
  }
  .page-about .data-card {
    padding: 24px;
  }
  .page-about .about-data__body {
    gap: 48px;
  }
  .page-about .about-philosophy__wrap {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 64px;
    align-items: stretch;
  }
  .page-about .philosophy-card__index {
    font-size: 36px;
  }
  .page-about .about-philosophy__statement {
    min-height: 280px;
    padding: 40px;
  }
  .page-about .about-ops__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 32px 48px;
    margin-top: 40px;
  }
  .page-about .about-cta {
    padding: 56px 0 96px;
  }
}

@media (min-width: 1280px) {
  .page-about .about-hero__container {
    gap: 80px;
  }
  .page-about .about-milestones__figure {
    max-width: 85%;
  }
}