.page-about {
  --about-soft-line: rgba(242,239,233,0.18);
  --about-dark-copy: rgba(242,239,233,0.88);
  position: relative;
  overflow-x: clip;
  background: var(--linen);
  color: var(--ink);
}

.page-about .container {
  width: 100%;
  max-width: var(--content-w);
  margin-inline: auto;
  padding-inline: 20px;
}

.page-about section {
  padding-block: 64px;
}

.page-about .section-head {
  display: grid;
  gap: 10px;
  margin-bottom: 32px;
}

.page-about .section-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 32px;
  line-height: 1.05;
  margin: 0;
  padding-left: 14px;
  border-left: 4px solid var(--gold);
  letter-spacing: 0.01em;
}

.page-about .section-note {
  margin: 0;
  max-width: 680px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--rock-gray);
}

.page-about .filter-btn {
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .filter-btn:hover {
  transform: translateY(-2px);
}

.page-about .about-hero {
  position: relative;
  padding-top: 36px;
  padding-bottom: 72px;
  background:
    radial-gradient(circle at 80% 18%, var(--gold-fade), transparent 46%),
    linear-gradient(140deg, var(--ink) 0%, var(--deep-moss) 56%, var(--olive) 100%);
  color: var(--linen);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 14px;
  background: linear-gradient(135deg, var(--gold) 33%, var(--clay) 33%, var(--clay) 66%, var(--deep-moss) 66%);
  background-size: 28px 100%;
  opacity: 0.9;
}

.page-about .about-hero .breadcrumbs {
  position: relative;
  z-index: 1;
  margin-bottom: 28px;
  font-size: 14px;
}

.page-about .about-hero .crumb-link,
.page-about .about-hero .crumb-current {
  color: var(--about-dark-copy);
  text-decoration: none;
}

.page-about .about-hero .crumb-current {
  color: var(--gold);
}

.page-about .about-hero .crumb-sep {
  margin-inline: 6px;
  color: var(--about-dark-copy);
  opacity: 0.6;
}

.page-about .hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 28px;
  align-items: center;
}

.page-about .hero-copy h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(46px, 10vw, 80px);
  line-height: 0.92;
  margin: 18px 0 18px;
  letter-spacing: -0.01em;
}

.page-about .hero-lead {
  margin: 0;
  max-width: 640px;
  font-size: 17px;
  line-height: 1.75;
  color: var(--about-dark-copy);
}

.page-about .hero-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  max-width: 560px;
  margin-top: 30px;
}

.page-about .hero-fact {
  border: 1px solid var(--about-soft-line);
  border-radius: var(--radius);
  padding: 14px 10px;
  background: var(--glass);
  text-align: center;
}

.page-about .hero-fact .data-number {
  display: block;
  font-family: var(--font-data);
  font-size: clamp(24px, 6vw, 32px);
  line-height: 1;
  color: var(--gold);
}

.page-about .hero-fact-label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--about-dark-copy);
}

.page-about .hero-visual {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 32px 72px rgba(14, 20, 16, 0.42);
}

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

.page-about .about-identity {
  background: var(--linen);
}

.page-about .identity-grid {
  display: grid;
  gap: 14px;
}

.page-about .identity-copy {
  position: relative;
  margin: 0;
  padding: 30px;
  border-radius: var(--radius);
  font-size: 16px;
  line-height: 1.75;
  background: var(--linen);
  border: 1px solid var(--graph-line);
}

.page-about .identity-copy:nth-child(1) {
  background: var(--deep-moss);
  color: var(--linen);
  border: 0;
}

.page-about .identity-copy:nth-child(3) {
  background: var(--olive);
  color: var(--linen);
  border: 0;
}

.page-about .identity-index {
  display: block;
  font-family: var(--font-data);
  font-size: 14px;
  letter-spacing: 0.14em;
  color: var(--gold);
  margin-bottom: 14px;
}

.page-about .identity-copy strong {
  display: block;
  font-family: var(--font-display);
  font-size: 22px;
  line-height: 1.2;
  margin-bottom: 12px;
  color: inherit;
}

.page-about .about-timeline {
  position: relative;
  background: linear-gradient(135deg, var(--linen), var(--gold-fade));
}

.page-about .timeline-filter,
.page-about .scenario-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .timeline-layout {
  margin-top: 8px;
}

.page-about .year-axis {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  margin-bottom: 20px;
  padding-bottom: 4px;
  scrollbar-width: none;
}

.page-about .year-axis::-webkit-scrollbar {
  display: none;
}

.page-about .year-node {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border: 1px solid var(--graph-line);
  border-radius: 999px;
  background: var(--linen);
  color: var(--ink);
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-about .year-node:hover {
  border-color: var(--gold);
  color: var(--deep-moss);
  transform: translateY(-2px);
}

.page-about .year-node .index-no {
  color: var(--gold);
}

.page-about .season-cards {
  display: grid;
  gap: 16px;
}

.page-about .timeline-card {
  position: relative;
  border-radius: var(--radius);
  padding: 30px 26px;
  color: var(--linen);
  box-shadow: 0 20px 46px rgba(14, 20, 16, 0.16);
  border: 1px solid rgba(255,255,255,0.08);
}

.page-about .timeline-card::before {
  content: "";
  position: absolute;
  left: -3px;
  top: 28px;
  bottom: 28px;
  width: 4px;
  border-radius: 4px;
  background: var(--gold);
}

.page-about .timeline-card:nth-child(1) {
  background: var(--deep-moss);
}

.page-about .timeline-card:nth-child(2) {
  background: var(--rock-gray);
}

.page-about .timeline-card:nth-child(3) {
  background: var(--olive);
}

.page-about .timeline-card:nth-child(4) {
  background: var(--ink);
}

.page-about .card-year {
  display: inline-block;
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--gold);
  margin-bottom: 12px;
}

.page-about .timeline-card h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 24px;
  line-height: 1.12;
  color: var(--linen);
}

.page-about .timeline-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--about-dark-copy);
}

.page-about .card-metric {
  display: inline-block;
  margin-top: 18px;
  padding: 6px 12px;
  border: 1px solid var(--about-soft-line);
  border-radius: 999px;
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--gold);
}

.page-about .about-data {
  position: relative;
  background: var(--deep-moss);
  color: var(--linen);
}

.page-about .about-data .section-note {
  color: var(--about-dark-copy);
}

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

.page-about .data-cell {
  min-height: 132px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 6px;
  padding: 22px;
  border-radius: var(--radius);
  box-shadow: 0 16px 36px rgba(14, 20, 16, 0.2);
}

.page-about .data-cell .data-label {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--about-dark-copy);
}

.page-about .data-cell .data-number {
  font-family: var(--font-data);
  font-size: 44px;
  line-height: 1;
  color: var(--gold);
}

.page-about .data-cell .data-unit {
  font-size: 14px;
  color: var(--about-dark-copy);
}

.page-about .data-cell[data-panel="line"] {
  background: transparent;
  border: 1px dashed rgba(242,239,233,0.42);
}

.page-about .data-cell[data-panel="moss"] {
  background: linear-gradient(145deg, var(--olive), var(--deep-moss));
}

.page-about .data-note {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 18px;
  margin-top: 26px;
  padding: 24px;
  border-left: 3px solid var(--gold);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: var(--glass);
}

.page-about .data-note p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--about-dark-copy);
}

.page-about .data-note .btn-outline {
  align-self: flex-start;
}

.page-about .data-visual {
  max-width: 820px;
  margin-top: 26px;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 22px 52px rgba(14, 20, 16, 0.32);
}

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

.page-about .about-scenarios {
  position: relative;
  background: linear-gradient(180deg, var(--olive) 0%, var(--deep-moss) 100%);
  color: var(--linen);
}

.page-about .about-scenarios .section-note {
  color: var(--about-dark-copy);
}

.page-about .about-scenarios .filter-btn {
  color: var(--linen);
  border-color: var(--about-soft-line);
}

.page-about .scenario-grid {
  display: grid;
  gap: 16px;
  margin-top: 30px;
}

.page-about .scenario-card {
  position: relative;
  padding: 28px 24px;
  border: 1px solid var(--about-soft-line);
  border-radius: var(--radius);
  color: var(--linen);
  box-shadow: 0 20px 44px rgba(14, 20, 16, 0.24);
}

.page-about .scenario-no {
  display: inline-block;
  font-family: var(--font-data);
  font-size: 16px;
  letter-spacing: 0.14em;
  color: var(--gold);
  margin-bottom: 14px;
}

.page-about .scenario-card h3 {
  font-family: var(--font-display);
  font-size: 22px;
  line-height: 1.15;
  margin: 0 0 10px;
  color: var(--linen);
}

.page-about .scenario-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--about-dark-copy);
}

.page-about .scenario-visual {
  max-width: 840px;
  margin: 30px auto 0;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 24px 54px rgba(14, 20, 16, 0.3);
}

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

.page-about .scene-index {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px 16px;
  margin-top: 34px;
  padding-top: 24px;
  border-top: 1px solid var(--about-soft-line);
}

.page-about .scene-index .legend-item {
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-about .scene-index .index-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--linen);
  text-decoration: none;
  font-weight: 600;
  font-size: 15px;
  transition: color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-about .scene-index .index-link:hover {
  color: var(--gold);
  transform: translateX(3px);
}

.page-about .scene-index .index-no {
  color: var(--gold);
}

@media (min-width: 900px) {
  .page-about section {
    padding-block: 96px;
  }

  .page-about .section-head {
    margin-bottom: 44px;
  }

  .page-about .hero-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 48px;
  }

  .page-about .hero-copy h1 {
    font-size: 76px;
  }

  .page-about .hero-lead {
    font-size: 18px;
  }

  .page-about .hero-facts {
    gap: 14px;
  }

  .page-about .identity-grid {
    grid-template-columns: repeat(12, 1fr);
    gap: 20px;
  }

  .page-about .identity-copy:nth-child(1) {
    grid-column: span 5;
  }

  .page-about .identity-copy:nth-child(2) {
    grid-column: span 7;
  }

  .page-about .identity-copy:nth-child(3) {
    grid-column: 1 / -1;
  }

  .page-about .timeline-layout {
    display: grid;
    grid-template-columns: 176px minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }

  .page-about .year-axis {
    position: sticky;
    top: calc(var(--header-h) + 24px);
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    margin-bottom: 0;
    overflow: visible;
  }

  .page-about .year-node {
    border-radius: var(--radius);
  }

  .page-about .season-cards {
    gap: 20px;
  }

  .page-about .data-bento {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 16px;
  }

  .page-about .data-cell {
    min-height: 150px;
  }

  .page-about .data-cell-leagues {
    grid-column: span 4;
  }

  .page-about .data-cell-teams {
    grid-column: span 3;
  }

  .page-about .data-cell-matches {
    grid-column: span 5;
  }

  .page-about .data-cell-season {
    grid-column: span 4;
  }

  .page-about .data-cell-updates {
    grid-column: span 5;
  }

  .page-about .data-cell-nav {
    grid-column: span 3;
  }

  .page-about .data-note {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .page-about .scenario-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-about .scene-index {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
  }
}