.page-about {
  --about-diagonal: 14deg;
}

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(150deg, #0B1F19 0%, #12362B 58%, #0B1F19 100%);
  color: var(--paper);
  padding-bottom: clamp(2.5rem, 6vw, 5rem);
}

.page-about .hero-figure {
  position: relative;
  height: clamp(220px, 38vw, 460px);
  overflow: hidden;
}

.page-about .hero-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  opacity: .42;
  filter: saturate(.7) contrast(1.05);
}

.page-about .hero-figure-tint {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(11, 31, 25, .55) 0%, rgba(11, 31, 25, .9) 78%, #0B1F19 100%),
    linear-gradient(115deg, rgba(11, 31, 25, .92) 0%, rgba(18, 54, 43, .28) 60%, rgba(11, 31, 25, .85) 100%);
}

.page-about .hero-inner {
  position: relative;
  z-index: 2;
  margin-top: clamp(-9rem, -12vw, -4rem);
}

.page-about .breadcrumbs {
  font-size: .8125rem;
  letter-spacing: .04em;
  color: rgba(243, 237, 225, .68);
  margin-bottom: 1.5rem;
}

.page-about .breadcrumbs a {
  color: rgba(243, 237, 225, .82);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .24s var(--ease);
}

.page-about .breadcrumbs a:hover,
.page-about .breadcrumbs a:focus-visible {
  border-bottom-color: var(--gold);
}

.page-about .about-hero .eyebrow {
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  margin: 0 0 .9rem;
}

.page-about .about-hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.1rem, 5.4vw, 4.2rem);
  line-height: 1.14;
  letter-spacing: -.01em;
  margin: 0 0 1.25rem;
  max-width: 22ch;
  color: #FBF7EE;
}

.page-about .about-hero .lede {
  max-width: 62ch;
  font-size: clamp(1rem, 1.3vw, 1.125rem);
  line-height: 1.85;
  color: rgba(243, 237, 225, .88);
  margin: 0 0 2.25rem;
}

.page-about .hero-facts {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line-on-dark);
  border: 1px solid var(--line-on-dark);
  border-radius: 4px;
  overflow: hidden;
  max-width: 780px;
  margin-bottom: 2rem;
}

.page-about .hero-fact {
  background: rgba(11, 31, 25, .55);
  padding: 1.1rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: .3rem;
}

.page-about .hero-fact-num {
  font-size: clamp(1.35rem, 3vw, 1.9rem);
  font-weight: 700;
  color: var(--gold);
  letter-spacing: .01em;
}

.page-about .hero-fact-label {
  font-size: .8125rem;
  letter-spacing: .06em;
  color: rgba(243, 237, 225, .7);
}

.page-about .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
}

.page-about .about-origin,
.page-about .about-audience,
.page-about .about-team,
.page-about .about-rules,
.page-about .about-eco {
  padding: clamp(3rem, 7vw, 6rem) 0;
}

.page-about .about-audience {
  background: var(--paper-warm);
}

.page-about .about-rules {
  background: linear-gradient(180deg, var(--paper) 0%, #EDE5D6 100%);
}

.page-about .origin-grid,
.page-about .team-grid,
.page-about .eco-grid {
  align-items: start;
  margin-top: clamp(2rem, 4vw, 3rem);
}

.page-about .origin-copy p,
.page-about .eco-body p,
.page-about .rules-body p {
  font-size: 1rem;
  line-height: 1.85;
  color: var(--graphite);
  margin: 0 0 1.15rem;
}

.page-about .origin-list {
  list-style: none;
  margin: 1.75rem 0 0;
  padding: 0;
  border-top: 1px solid var(--inline);
}

.page-about .origin-list li {
  display: flex;
  gap: 1rem;
  align-items: baseline;
  padding: .9rem 0;
  border-bottom: 1px solid var(--inline-soft);
  font-size: .9375rem;
  line-height: 1.7;
  color: var(--graphite);
}

.page-about .origin-year {
  flex: 0 0 auto;
  font-weight: 700;
  font-size: .875rem;
  color: var(--blue);
  letter-spacing: .06em;
  padding-top: .12em;
}

.page-about .glass {
  border-radius: 4px;
  padding: clamp(1.25rem, 3vw, 1.75rem);
  border: 1px solid rgba(11, 31, 25, .1);
}

.page-about .aside-title {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--ink-deep);
  margin: 0 0 .9rem;
  padding-bottom: .7rem;
  border-bottom: 2px solid var(--gold);
  display: inline-block;
}

.page-about .glass p {
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--graphite);
  margin: 0 0 .9rem;
}

.page-about .glass p:last-of-type {
  margin-bottom: 0;
}

.page-about .audience-grid {
  margin-top: clamp(2rem, 4vw, 3rem);
}

.page-about .audience-card {
  border-radius: 4px;
  padding: clamp(1.25rem, 2.6vw, 1.75rem);
  border: 1px solid rgba(11, 31, 25, .08);
  border-top: 3px solid var(--paper-warm);
  transition: transform .32s var(--ease), box-shadow .32s var(--ease), border-top-color .32s var(--ease);
}

.page-about .audience-card:hover,
.page-about .audience-card:focus-within {
  transform: translateY(-4px);
  box-shadow: 0 14px 30px rgba(11, 31, 25, .12);
  border-top-color: var(--cinnabar);
}

.page-about .audience-idx {
  display: inline-block;
  font-size: .8125rem;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--blue);
  margin-bottom: .8rem;
}

.page-about .audience-card h3 {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--ink-deep);
  margin: 0 0 .6rem;
}

.page-about .audience-card p {
  font-size: .9375rem;
  line-height: 1.78;
  color: var(--muted);
  margin: 0;
}

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

.page-about .flow-list::before {
  content: "";
  position: absolute;
  left: 13px;
  top: .6rem;
  bottom: .6rem;
  width: 1px;
  background: linear-gradient(180deg, var(--blue-soft), var(--blue), var(--gold));
}

.page-about .flow-item {
  position: relative;
  display: flex;
  gap: 1.25rem;
  padding: 0 0 1.75rem 0;
}

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

.page-about .flow-item::before {
  content: "";
  position: absolute;
  left: 7px;
  top: .55rem;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--blue);
  z-index: 1;
}

.page-about .flow-step {
  flex: 0 0 auto;
  width: 3.4rem;
  text-align: left;
  font-size: .8125rem;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--cinnabar);
  padding-top: .35rem;
}

.page-about .flow-body h3 {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--ink-deep);
  margin: 0 0 .4rem;
}

.page-about .flow-body p {
  font-size: .9375rem;
  line-height: 1.78;
  color: var(--muted);
  margin: 0;
}

.page-about .team-facts {
  margin: 1.25rem 0 1.4rem;
  padding: 0;
  border-top: 1px solid var(--inline);
}

.page-about .team-fact {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: baseline;
  padding: .68rem 0;
  border-bottom: 1px solid var(--inline-soft);
}

.page-about .team-fact dt {
  font-size: .875rem;
  color: var(--muted);
}

.page-about .team-fact dd {
  margin: 0;
  font-size: .875rem;
  font-weight: 700;
  color: var(--ink-deep);
  word-break: break-all;
  text-align: right;
}

.page-about .rules-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.75rem, 4vw, 3rem);
  margin-top: clamp(2rem, 4vw, 3rem);
  align-items: start;
}

.page-about .rules-figure {
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid rgba(11, 31, 25, .1);
}

.page-about .rules-figure img,
.page-about .eco-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-about .rules-body {
  position: relative;
  padding-left: 0;
}

.page-about .version-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin: 1.5rem 0 1.5rem;
}

.page-about .version-tabs .chip {
  font-family: var(--font-body);
  font-size: .875rem;
  padding: .42rem .95rem;
  border-radius: 999px;
  border: 1px solid var(--blue-soft);
  background: rgba(255, 255, 255, .6);
  color: var(--blue);
  cursor: pointer;
  transition: background .24s var(--ease), color .24s var(--ease), border-color .24s var(--ease);
}

.page-about .version-tabs .chip.is-active {
  background: var(--ink-table);
  border-color: var(--ink-table);
  color: var(--gold);
}

.page-about .version-tabs .chip:hover {
  border-color: var(--blue);
}

.page-about .version-tabs .chip:focus-visible {
  outline: 2px solid var(--cinnabar);
  outline-offset: 2px;
}

.page-about .rules-points {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
  display: grid;
  gap: .85rem;
}

.page-about .rules-points li {
  position: relative;
  padding: .85rem 1rem .85rem 2.4rem;
  background: rgba(255, 255, 255, .72);
  border-left: 3px solid var(--gold);
  border-radius: 3px;
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--graphite);
}

.page-about .rules-points li::before {
  content: "";
  position: absolute;
  left: 1rem;
  top: 1.35rem;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cinnabar);
}

.page-about .rules-points strong {
  color: var(--ink-deep);
  font-weight: 700;
}

.page-about .link-more {
  display: inline-block;
  font-size: .9375rem;
  font-weight: 600;
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid var(--blue-soft);
  padding-bottom: 2px;
  transition: color .24s var(--ease), border-color .24s var(--ease);
}

.page-about .link-more:hover,
.page-about .link-more:focus-visible {
  color: var(--cinnabar);
  border-bottom-color: var(--cinnabar);
}

.page-about .about-eco {
  background: linear-gradient(160deg, #0B1F19 0%, #12362B 100%);
  color: var(--paper);
}

.page-about .about-eco .eyebrow {
  color: var(--gold);
}

.page-about .about-eco .section-title {
  color: #FBF7EE;
}

.page-about .about-eco .section-note {
  color: rgba(243, 237, 225, .72);
}

.page-about .eco-figure {
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--line-on-dark);
}

.page-about .eco-body {
  color: rgba(243, 237, 225, .86);
}

.page-about .eco-body p {
  color: rgba(243, 237, 225, .84);
}

.page-about .eco-stats {
  margin: 1.75rem 0 1.5rem;
  gap: 1px;
  background: var(--line-on-dark);
  border: 1px solid var(--line-on-dark);
  border-radius: 4px;
  overflow: hidden;
}

.page-about .eco-stat {
  background: rgba(11, 31, 25, .6);
  padding: 1rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: .3rem;
}

.page-about .eco-stat-num {
  font-size: clamp(1.25rem, 2.6vw, 1.65rem);
  font-weight: 700;
  color: var(--gold);
}

.page-about .eco-stat-label {
  font-size: .8125rem;
  line-height: 1.5;
  color: rgba(243, 237, 225, .7);
}

.page-about .about-eco .link-more {
  color: var(--gold);
  border-bottom-color: rgba(200, 164, 82, .5);
}

.page-about .about-eco .link-more:hover,
.page-about .about-eco .link-more:focus-visible {
  color: var(--cinnabar-soft);
  border-bottom-color: var(--cinnabar-soft);
}

.page-about .about-cta {
  padding: clamp(2.5rem, 6vw, 5rem) 0 clamp(3.5rem, 7vw, 6rem);
  background: var(--paper);
}

.page-about .cta-panel {
  border-radius: 4px;
  padding: clamp(1.75rem, 4vw, 3rem);
  border: 1px solid rgba(11, 31, 25, .1);
  box-shadow: 0 18px 44px rgba(11, 31, 25, .09);
  display: grid;
  gap: 1.5rem;
  position: relative;
  overflow: hidden;
}

.page-about .cta-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 5px;
  height: 100%;
  background: linear-gradient(180deg, var(--cinnabar), var(--gold), var(--blue));
}

.page-about .cta-text .section-title {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--ink-deep);
  margin: 0 0 .8rem;
}

.page-about .cta-text p {
  font-size: 1rem;
  line-height: 1.82;
  color: var(--muted);
  margin: 0;
  max-width: 62ch;
}

.page-about .cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  align-items: center;
}

@media (min-width: 640px) {
  .page-about .hero-facts {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 960px) {
  .page-about .rules-layout {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }

  .page-about .cta-panel {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 2.5rem;
  }

  .page-about .cta-actions {
    justify-content: flex-end;
  }
}

@media (max-width: 767px) {
  .page-about .origin-aside {
    margin-top: 1.75rem;
  }

  .page-about .team-aside {
    margin-top: 1.75rem;
  }

  .page-about .eco-body {
    margin-top: 1.75rem;
  }

  .page-about .rules-points li {
    padding-left: 1.9rem;
  }

  .page-about .rules-points li::before {
    left: .8rem;
  }

  .page-about .flow-step {
    width: 2.9rem;
    font-size: .75rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .audience-card,
  .page-about .link-more,
  .page-about .version-tabs .chip {
    transition: none;
  }

  .page-about .audience-card:hover,
  .page-about .audience-card:focus-within {
    transform: none;
  }
}
</