.page-about {
  background: var(--c-snow);
  color: var(--c-ink);
  overflow-x: hidden;
}

.page-about .breadcrumb {
  padding-top: 28px;
}

.page-about .about-chapter-num {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--c-flame);
}

.page-about .about-chapter-num::before {
  content: "";
  width: 34px;
  height: 3px;
  background: var(--c-rio);
  flex: none;
}

.page-about .page-section {
  padding: 72px 0;
}

.page-about .page-section h2 {
  margin: 0 0 16px;
  font-family: var(--font-heading);
  font-size: clamp(27px, 5vw, 42px);
  font-weight: 900;
  line-height: 1.15;
  color: var(--c-ink);
}

.page-about .about-section-lead {
  max-width: 640px;
  margin: 0 0 28px;
  font-size: 16px;
  line-height: 1.7;
  color: var(--c-ink);
  opacity: .8;
}

.page-about .about-hero {
  position: relative;
  padding: 56px 0 88px;
  margin-bottom: 16px;
  background:
    linear-gradient(165deg, var(--c-night) 0%, var(--c-glacier) 74%, var(--c-snow) 74.5%);
  color: var(--c-snow);
}

.page-about .about-hero .about-chapter-num {
  color: var(--c-gold);
}

.page-about .about-hero .about-chapter-num::before {
  background: var(--c-gold);
}

.page-about .about-hero__inner {
  display: grid;
  gap: 36px;
}

.page-about .about-hero__content {
  min-width: 0;
}

.page-about .about-hero h1 {
  margin: 0 0 18px;
  font-family: var(--font-heading);
  font-size: clamp(32px, 6.4vw, 56px);
  font-weight: 900;
  line-height: 1.12;
  color: var(--c-snow);
}

.page-about .about-hero__lead {
  margin: 0 0 14px;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.6;
}

.page-about .about-hero__content p:last-of-type {
  margin-bottom: 0;
  opacity: .88;
  line-height: 1.7;
}

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

.page-about .about-hero__media img {
  width: 100%;
  max-width: 400px;
  height: auto;
  display: block;
  border: 4px solid var(--c-snow);
  box-shadow: 14px 14px 0 rgba(26, 46, 63, .25);
  transform: rotate(1.6deg);
  background: var(--c-sand);
}

.page-about .about-hero__media::after {
  content: "";
  position: absolute;
  top: -14px;
  right: -14px;
  width: 64px;
  height: 64px;
  background:
    linear-gradient(45deg, var(--c-rio) 0 8%, transparent 8% 16%, var(--c-rio) 16% 24%, transparent 24% 32%, var(--c-rio) 32% 40%, transparent 40% 48%, var(--c-rio) 48% 56%, transparent 56% 64%, var(--c-rio) 64% 72%, transparent 72% 80%, var(--c-rio) 80% 88%, transparent 88%);
  opacity: .75;
}

.page-about .milestone-layout {
  display: grid;
  gap: 36px;
  margin-top: 36px;
  align-items: center;
}

.page-about .timeline {
  position: relative;
  margin: 0;
  padding: 0;
  border-left: 4px solid var(--c-sand);
}

.page-about .timeline-node {
  position: relative;
  margin-left: 24px;
  padding: 18px 0 20px;
  border-bottom: 1px dashed var(--c-sand);
}

.page-about .timeline-node:first-child {
  padding-top: 6px;
}

.page-about .timeline-node::before {
  content: "";
  position: absolute;
  left: -32px;
  top: 26px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--c-snow);
  border: 4px solid var(--c-rio);
}

.page-about .timeline-node[open]::before {
  background: var(--c-gold);
  border-color: var(--c-gold);
}

.page-about .timeline-node summary {
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .04em;
  line-height: 1.5;
  color: var(--c-night);
  list-style: none;
}

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

.page-about .timeline-node summary::marker {
  content: "";
}

.page-about .timeline-node summary::after {
  content: "+";
  float: right;
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--c-rio);
}

.page-about .timeline-node[open] summary::after {
  content: "–";
}

.page-about .timeline-node__body {
  margin-top: 14px;
  padding: 16px 18px;
  background: var(--c-snow);
  border: 2px solid var(--c-ink);
  box-shadow: 6px 6px 0 var(--c-sand);
}

.page-about .timeline-node__body p {
  margin: 0;
  line-height: 1.7;
  font-size: 14px;
}

.page-about .milestone-layout__map {
  margin: 0;
  border: 3px solid var(--c-ink);
  box-shadow: 10px 10px 0 rgba(42, 38, 32, .14);
  background: var(--c-snow);
}

.page-about .milestone-layout__map img {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .milestone-layout__map figcaption {
  padding: 12px 14px;
  background: var(--c-night);
  color: var(--c-snow);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.4;
}

.page-about .value-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 24px 0 30px;
}

.page-about .value-filter-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 18px;
  border: 2px solid var(--c-ink);
  border-radius: 0;
  background: var(--c-snow);
  color: var(--c-ink);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .06em;
  cursor: pointer;
  transition: background .2s ease, color .2s ease, box-shadow .2s ease;
}

.page-about .value-filter-btn:hover {
  background: var(--c-sand);
}

.page-about .value-filter-btn.is-active {
  background: var(--c-rio);
  border-color: var(--c-rio);
  color: var(--c-snow);
  box-shadow: 4px 4px 0 rgba(166, 58, 43, .25);
}

.page-about .value-grid {
  display: grid;
  gap: 22px;
  margin-bottom: 36px;
}

.page-about .value-card {
  position: relative;
  padding: 26px 24px 30px;
  background: var(--c-snow);
  border: 3px solid var(--c-ink);
  box-shadow: 8px 8px 0 rgba(42, 38, 32, .13);
  overflow: hidden;
}

.page-about .value-card::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, transparent 50%, var(--c-gold) 50%);
}

.page-about .value-card__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 44px;
  font-weight: 700;
  line-height: 1;
  color: var(--c-glacier);
}

.page-about .value-card h3 {
  margin: 14px 0 8px;
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 900;
  line-height: 1.3;
}

.page-about .value-card p {
  margin: 0;
  line-height: 1.65;
  font-size: 14px;
  color: var(--c-ink);
  opacity: .78;
}

.page-about .about-value-note {
  margin: 0 0 36px;
  font-size: 14px;
  line-height: 1.6;
}

.page-about .about-value-note a,
.page-about .about-perks__note a {
  color: var(--c-glacier);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.page-about .about-values__vision {
  margin: 0;
  border: 4px solid var(--c-night);
  box-shadow: 12px 12px 0 rgba(26, 46, 63, .16);
}

.page-about .about-values__vision img {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .about-values__vision figcaption {
  padding: 14px 18px;
  background: var(--c-night);
  color: var(--c-snow);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.4;
}

.page-about .perks-grid {
  display: grid;
  gap: 20px;
  margin: 28px 0 24px;
}

.page-about .perk-card {
  position: relative;
  padding: 24px 22px 26px 28px;
  background: linear-gradient(135deg, var(--c-sand), var(--c-snow));
  border: 1px solid var(--c-ink);
  border-left-width: 8px;
  border-left-color: var(--c-flame);
  box-shadow: 6px 6px 0 rgba(42, 38, 32, .1);
}

.page-about .perk-card__index {
  display: inline-block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--c-rio);
}

.page-about .perk-card h3 {
  margin: 0 0 8px;
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 900;
  line-height: 1.3;
}

.page-about .perk-card p {
  margin: 0;
  line-height: 1.65;
  font-size: 14px;
  color: var(--c-ink);
  opacity: .78;
}

.page-about .about-perks__note {
  font-size: 14px;
  line-height: 1.6;
}

.page-about .about-contact {
  padding: 72px 0 84px;
  background:
    linear-gradient(170deg, transparent 0 8%, var(--c-rio) 8.2% 9.2%, transparent 9.4%),
    linear-gradient(185deg, var(--c-night), var(--c-glacier));
  color: var(--c-snow);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 28px), 0 100%);
}

.page-about .about-contact .about-chapter-num {
  color: var(--c-gold);
}

.page-about .about-contact .about-chapter-num::before {
  background: var(--c-gold);
}

.page-about .about-contact h2 {
  color: var(--c-snow);
}

.page-about .about-contact p {
  max-width: 680px;
  line-height: 1.7;
  color: var(--c-snow);
  opacity: .9;
}

.page-about .about-contact__list {
  list-style: none;
  margin: 24px 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid rgba(253, 246, 227, .25);
}

.page-about .about-contact__list li {
  padding: 12px 0;
  border-bottom: 1px solid rgba(253, 246, 227, .25);
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.6;
  color: var(--c-snow);
}

.page-about .about-contact__note {
  margin: 0 0 28px;
  font-size: 14px;
}

.page-about .about-contact__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.page-about .about-contact a {
  color: var(--c-gold);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.page-about .about-btn--gold,
.page-about .about-btn--ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 15px;
  text-decoration: none;
  letter-spacing: .04em;
  cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease;
}

.page-about .about-btn--gold {
  background: var(--c-gold);
  border: 2px solid var(--c-gold);
  color: var(--c-night);
  box-shadow: 5px 5px 0 rgba(0, 0, 0, .2);
}

.page-about .about-btn--ghost {
  background: transparent;
  border: 2px solid var(--c-snow);
  color: var(--c-snow);
  box-shadow: 5px 5px 0 rgba(253, 246, 227, .18);
}

.page-about .about-btn--gold:hover,
.page-about .about-btn--ghost:hover {
  transform: translate(-2px, -2px);
}

@media (min-width: 760px) {
  .page-about .value-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

  .page-about .about-contact__list {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    border-top: none;
  }

  .page-about .about-contact__list li {
    border-bottom: none;
    padding: 14px 0;
  }
}

@media (min-width: 980px) {
  .page-about .about-hero {
    padding: 72px 0 96px;
  }

  .page-about .about-hero__inner {
    grid-template-columns: 1.1fr .9fr;
    align-items: center;
  }

  .page-about .about-hero__media img {
    margin-left: auto;
    margin-bottom: 12px;
  }

  .page-about .milestone-layout {
    grid-template-columns: 1.1fr .9fr;
    align-items: start;
  }
}