.page-about {
  padding-bottom: clamp(40px, 7vw, 88px);
  --about-side-w: 172px;
}

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(20px, 4vw, 44px) 0 clamp(30px, 5vw, 64px);
  border-bottom: 1px solid var(--line-soft);
  background:
    radial-gradient(110% 80% at 88% -10%, rgba(71, 224, 210, 0.12), transparent 62%),
    radial-gradient(80% 70% at -10% 20%, rgba(246, 200, 95, 0.09), transparent 58%);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 56px);
}

.page-about .about-hero__lead .eyebrow {
  margin-top: 18px;
  color: var(--cyan);
  letter-spacing: 0.16em;
}

.page-about .about-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 7vw, 68px);
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--fog);
  overflow-wrap: break-word;
}

.page-about .about-hero__lede {
  max-width: 48ch;
  margin: 20px 0 0;
  font-size: clamp(16px, 2.1vw, 19px);
  line-height: 1.75;
  color: rgba(234, 244, 239, 0.86);
}

.page-about .about-hero__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .about-hero__aside {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-about .about-toc {
  padding: 16px 16px 6px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(170deg, rgba(14, 42, 33, 0.92), rgba(10, 14, 13, 0.78));
}

.page-about .about-toc__title {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--gold);
}

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

.page-about .about-toc__item + .about-toc__item {
  border-top: 1px solid var(--line-soft);
}

.page-about .about-toc__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 2px;
  font-size: 14px;
  color: rgba(234, 244, 239, 0.82);
  text-decoration: none;
  transition: color 180ms var(--ease), padding-left 180ms var(--ease);
}

.page-about .about-toc__link:hover,
.page-about .about-toc__link:focus-visible {
  color: var(--cyan);
  padding-left: 6px;
  outline: none;
}

.page-about .about-toc__index {
  font-size: 11px;
  color: var(--sage);
  letter-spacing: 0.06em;
}

.page-about .about-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--line-soft);
}

.page-about .about-facts__item {
  display: grid;
  gap: 4px;
  padding: 12px 12px 14px;
  background: rgba(6, 22, 17, 0.9);
}

.page-about .about-facts__label {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--sage);
}

.page-about .about-facts__value {
  font-size: 15px;
  color: var(--fog);
  letter-spacing: 0.02em;
}

.page-about .about-chapter {
  padding: clamp(34px, 6vw, 76px) 0;
  border-bottom: 1px solid var(--line-soft);
}

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

.page-about .about-chapter__grid {
  display: grid;
  gap: clamp(16px, 3vw, 30px);
}

.page-about .about-chapter__side {
  display: flex;
  gap: 12px;
  align-items: baseline;
}

.page-about .about-chapter__num {
  margin: 0;
  font-size: 30px;
  line-height: 1;
  color: var(--gold);
  letter-spacing: -0.02em;
}

.page-about .about-chapter__side .note {
  margin: 0;
  border-left: 1px solid var(--line-gold);
  padding-left: 10px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--sage);
}

.page-about .about-chapter__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 4vw, 38px);
  line-height: 1.22;
  letter-spacing: -0.02em;
  color: var(--fog);
}

.page-about .about-chapter__intro {
  max-width: 62ch;
  margin: 16px 0 0;
  font-size: clamp(15px, 1.9vw, 17px);
  line-height: 1.8;
  color: rgba(234, 244, 239, 0.85);
}

.page-about .about-chapter__more {
  max-width: 62ch;
  margin: 22px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--sage);
}

.page-about .about-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(71, 224, 210, 0.4);
  transition: border-color 180ms var(--ease), color 180ms var(--ease);
}

.page-about .about-link:hover,
.page-about .about-link:focus-visible {
  color: var(--gold);
  border-bottom-color: var(--gold);
  outline: none;
}

.page-about .media-frame {
  position: relative;
  margin: 24px 0 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(150deg, rgba(18, 62, 51, 0.85), rgba(6, 22, 17, 0.96));
}

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

.page-about .media-frame--wide img {
  aspect-ratio: 16 / 9;
}

.page-about .media-frame--square img {
  aspect-ratio: 1 / 1;
}

.page-about .media-frame--tall img {
  aspect-ratio: 3 / 2;
}

.page-about .media-frame__caption {
  display: block;
  padding: 10px 14px 12px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--sage);
  border-top: 1px solid var(--line-soft);
}

.page-about .timeline {
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .tl-item {
  position: relative;
  padding: 0 0 26px 26px;
}

.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 5px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  border: 1px solid var(--gold);
  background: var(--ink-deep);
  box-shadow: 0 0 0 3px rgba(246, 200, 95, 0.08);
}

.page-about .tl-item::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 22px;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, var(--line-gold), rgba(145, 168, 159, 0.14));
}

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

.page-about .tl-item:last-child::after {
  display: none;
}

.page-about .tl-item__tag {
  display: inline-block;
  margin: 0;
  padding: 3px 10px;
  border: 1px solid rgba(71, 224, 210, 0.35);
  border-radius: 999px;
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-about .tl-item__title {
  margin: 10px 0 0;
  font-size: clamp(17px, 2.2vw, 20px);
  font-weight: 700;
  color: var(--fog);
  letter-spacing: -0.01em;
}

.page-about .tl-item__text {
  max-width: 60ch;
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(234, 244, 239, 0.78);
}

.page-about .philosophy__layout {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  margin-top: 8px;
}

.page-about .principle-grid {
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-about .principle {
  position: relative;
  padding: 20px 18px 22px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--gold);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(14, 42, 33, 0.92), rgba(10, 14, 13, 0.72));
  transition: border-color 180ms var(--ease), transform 180ms var(--ease);
}

.page-about .principle--exact {
  border-left-color: var(--cyan);
}

.page-about .principle--steady {
  border-left-color: var(--rose);
}

.page-about .principle:hover {
  border-color: var(--line-gold);
  transform: translateY(-2px);
}

.page-about .principle__key {
  margin: 0;
  font-size: 26px;
  line-height: 1;
  color: var(--gold);
}

.page-about .principle--exact .principle__key {
  color: var(--cyan);
}

.page-about .principle--steady .principle__key {
  color: var(--rose);
}

.page-about .principle__title {
  margin: 10px 0 0;
  font-size: 18px;
  font-weight: 700;
  color: var(--fog);
}

.page-about .principle__text {
  margin: 8px 0 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(234, 244, 239, 0.78);
}

.page-about .principle__stat {
  margin: 14px 0 0;
  padding-top: 10px;
  border-top: 1px dashed var(--line);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--sage);
}

.page-about .growth {
  margin-top: 26px;
  padding: 18px 14px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(18, 62, 51, 0.55), rgba(6, 22, 17, 0.9));
}

.page-about .growth__svg {
  display: block;
  width: 100%;
  height: auto;
  max-height: 200px;
}

.page-about .growth__levels {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .level {
  display: grid;
  gap: 4px;
  padding: 10px 12px 12px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: rgba(6, 22, 17, 0.72);
  transition: border-color 180ms var(--ease), background-color 180ms var(--ease);
}

.page-about .level:hover {
  border-color: var(--line-gold);
  background: rgba(14, 42, 33, 0.9);
}

.page-about .level__name {
  font-size: 15px;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.04em;
}

.page-about .level__note {
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--sage);
}

.page-about .growth-folds {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.page-about .growth-fold {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(14, 42, 33, 0.6);
}

.page-about .growth-fold__summary {
  padding: 14px 16px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 700;
  color: var(--fog);
  list-style: none;
}

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

.page-about .growth-fold__summary::before {
  content: "+";
  display: inline-block;
  width: 18px;
  color: var(--cyan);
  font-family: var(--font-mono);
}

.page-about .growth-fold[open] .growth-fold__summary::before {
  content: "−";
  color: var(--gold);
}

.page-about .growth-fold__summary:focus-visible {
  outline: 1px solid var(--gold);
  outline-offset: -2px;
}

.page-about .growth-fold__body {
  padding: 0 16px 16px;
}

.page-about .growth-fold__list {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 8px;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(234, 244, 239, 0.8);
}

.page-about .about-shot--side {
  max-width: 420px;
}

.page-about .team-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 26px;
}

.page-about .team-card {
  padding: 16px 14px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(165deg, rgba(14, 42, 33, 0.88), rgba(10, 14, 13, 0.7));
  transition: border-color 180ms var(--ease), transform 180ms var(--ease);
}

.page-about .team-card:hover {
  border-color: var(--line-gold);
  transform: translateY(-2px);
}

.page-about .team-card__value {
  margin: 0;
  font-size: clamp(20px, 3.2vw, 26px);
  line-height: 1.1;
  color: var(--gold);
  letter-spacing: -0.02em;
}

.page-about .team-card__label {
  margin: 8px 0 0;
  font-size: 13.5px;
  font-weight: 700;
  color: var(--fog);
}

.page-about .team-card__note {
  margin: 6px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--sage);
}

.page-about .milestones {
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .milestone {
  display: grid;
  gap: 6px;
  padding: 18px 0;
  border-top: 1px solid var(--line-soft);
}

.page-about .milestone:last-child {
  border-bottom: 1px solid var(--line-soft);
}

.page-about .milestone__ver {
  margin: 0;
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-about .milestone__title {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  color: var(--fog);
}

.page-about .milestone__text {
  max-width: 60ch;
  margin: 6px 0 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(234, 244, 239, 0.78);
}

.page-about .eco-grid {
  display: grid;
  gap: 12px;
  margin-top: 26px;
}

.page-about .eco-card {
  padding: 18px 16px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    radial-gradient(120% 100% at 100% 0%, rgba(71, 224, 210, 0.1), transparent 60%),
    rgba(14, 42, 33, 0.72);
}

.page-about .eco-card__title {
  margin: 0;
  font-size: 16.5px;
  font-weight: 700;
  color: var(--fog);
}

.page-about .eco-card__text {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(234, 244, 239, 0.78);
}

.page-about .region-block {
  display: grid;
  gap: 20px;
  margin-top: 26px;
  padding: 22px 18px;
  border: 1px solid var(--line-gold);
  border-radius: var(--radius-lg);
  background: linear-gradient(140deg, rgba(18, 62, 51, 0.7), rgba(6, 22, 17, 0.94));
}

.page-about .region-stat {
  display: grid;
  gap: 4px;
  align-content: start;
}

.page-about .region-stat__value {
  margin: 0;
  font-size: clamp(44px, 9vw, 72px);
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--gold);
}

.page-about .region-stat__label {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--sage);
}

.page-about .region-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(234, 244, 239, 0.82);
}

.page-about .region-list li {
  display: flex;
  gap: 10px;
}

.page-about .region-list__dot {
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  margin-top: 9px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(71, 224, 210, 0.12);
}

.page-about .about-cta {
  display: grid;
  gap: 16px;
  margin-top: 30px;
  padding-top: 24px;
  border-top: 1px dashed var(--line);
}

.page-about .about-cta__text {
  max-width: 56ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(234, 244, 239, 0.82);
}

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

@media (min-width: 700px) {
  .page-about .principle-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }

  .page-about .principle:nth-child(2) {
    transform: translateY(16px);
  }

  .page-about .principle:nth-child(3) {
    transform: translateY(6px);
  }

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

  .page-about .growth__levels {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-about .level:nth-child(2) {
    transform: translateY(5px);
  }

  .page-about .level:nth-child(3) {
    transform: translateY(10px);
  }

  .page-about .level:nth-child(4) {
    transform: translateY(15px);
  }

  .page-about .level:nth-child(5) {
    transform: translateY(20px);
  }

  .page-about .level:nth-child(6) {
    transform: translateY(25px);
  }

  .page-about .milestone {
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 20px;
    align-items: start;
  }

  .page-about .milestone__ver {
    padding-top: 3px;
  }

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

  .page-about .region-block {
    grid-template-columns: 190px minmax(0, 1fr);
    gap: 26px;
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1fr) 306px;
    align-items: start;
  }

  .page-about .about-chapter__grid {
    grid-template-columns: var(--about-side-w) minmax(0, 1fr);
    gap: clamp(28px, 4vw, 60px);
  }

  .page-about .about-chapter__side {
    position: sticky;
    top: 96px;
    display: grid;
    gap: 10px;
    align-content: start;
  }

  .page-about .about-chapter__num {
    font-size: 36px;
  }

  .page-about .philosophy__layout {
    grid-template-columns: minmax(0, 240px) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-shot--side {
    margin-top: 18px;
  }
}

@media (min-width: 1100px) {
  .page-about .about-chapter__grid {
    grid-template-columns: 208px minmax(0, 1fr);
  }

  .page-about .philosophy__layout {
    grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .principle,
  .page-about .team-card,
  .page-about .level,
  .page-about .about-toc__link {
    transition: none;
  }

  .page-about .principle:nth-child(n),
  .page-about .level:nth-child(n) {
    transform: none;
  }
}