.page-about {
  --about-strip: linear-gradient(90deg, #D32F2F 0 25%, #FFB300 25% 50%, #00E676 50% 75%, #FFD500 75% 100%);
  --about-card-glass: rgba(255, 255, 255, 0.055);
  --about-card-line: rgba(255, 255, 255, 0.16);
  --about-origin-panel: rgba(0, 0, 0, 0.16);
  --about-muted-text: #E0E0E0;
  --about-deep-blue: #0B1E36;
  --about-gold-glow: rgba(255, 179, 0, 0.22);
  --about-green-grid: rgba(0, 230, 118, 0.33);
}

.page-about [id] {
  scroll-margin-top: 72px;
}

.page-about__hero {
  background-color: #111111;
  background-image:
    linear-gradient(rgba(0, 230, 118, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 230, 118, 0.07) 1px, transparent 1px);
  background-size: 34px 34px;
  overflow: hidden;
}

.page-about__hero-inner {
  display: grid;
  gap: 32px;
  padding-top: 28px;
  padding-bottom: 40px;
}

.page-about .breadcrumb {
  margin-bottom: 18px;
}

.page-about__kicker {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  color: var(--signal-yellow);
  text-transform: uppercase;
}

.page-about .page-title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 1.1rem + 2.4vw, 3.1rem);
  font-style: italic;
  font-weight: 900;
  line-height: 1.16;
  color: var(--paper-white);
}

.page-about__lead {
  margin: 0 0 20px;
  max-width: 660px;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.75;
  color: #E0E0E0;
}

.page-about__hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 32px;
}

.page-about__hero-stat {
  position: relative;
  min-width: 120px;
  padding-left: 14px;
  border-left: 3px solid var(--champion-gold);
}

.page-about__hero-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.55rem;
  font-weight: 700;
  line-height: 1.25;
  color: var(--data-green);
}

.page-about__hero-label {
  display: block;
  margin-top: 2px;
  font-family: var(--font-body);
  font-size: 0.78rem;
  color: #B0B0B0;
}

.page-about__hero-figure {
  aspect-ratio: 8 / 5;
  margin: 0;
  border-radius: 18px;
  overflow: hidden;
  background-color: #1B7A3D;
  border: 1px solid rgba(255, 255, 255, 0.13);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.32);
}

.page-about__hero-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-about__hero-figure figcaption,
.page-about__quality-figure figcaption,
.page-about__scale-figure figcaption {
  font-family: var(--font-body);
  font-size: 0.72rem;
  color: #B0B0B0;
  padding: 10px 12px 0;
  line-height: 1.5;
}

.page-about__railbar {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding: 14px 0 18px;
  -webkit-overflow-scrolling: touch;
}

.page-about__railbar a {
  flex: 0 0 auto;
  padding: 8px 14px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: #E0E0E0;
  text-decoration: none;
  background: rgba(255, 255, 255, 0.04);
}

.page-about__railbar a:hover,
.page-about__railbar a:focus-visible {
  color: #111111;
  background: var(--signal-yellow);
  border-color: var(--signal-yellow);
  outline: none;
}

.page-about__section {
  position: relative;
  padding-top: 64px;
  padding-bottom: 64px;
}

.page-about__section::before {
  content: "";
  display: block;
  width: 116%;
  height: 6px;
  margin: 0 0 40px;
  margin-left: -4%;
  background: var(--about-strip);
  transform: skewX(-16deg);
  position: relative;
  left: -2%;
}

.page-about__section--origin {
  background-color: var(--field-green);
  color: var(--paper-white);
}

.page-about__section--origin .section-header__title {
  color: var(--paper-white);
}

.page-about__section--origin .section-header__index {
  color: var(--champion-gold);
}

.page-about__section--origin .content p {
  color: rgba(245, 245, 240, 0.92);
}

.page-about__origin-grid {
  display: grid;
  gap: 28px;
  margin-top: 36px;
}

.page-about__origin-copy > p + p {
  margin-top: 16px;
}

.page-about__origin-points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
  border-left: 4px solid var(--champion-gold);
  padding-left: 6px;
}

.page-about__origin-points li {
  background: var(--about-origin-panel);
  border-radius: 12px;
  padding: 15px 16px;
  line-height: 1.6;
  font-size: 0.92rem;
}

.page-about__origin-points strong {
  color: var(--signal-yellow);
  font-weight: 700;
}

.page-about__section--timeline {
  background-color: var(--night-blue);
  color: var(--paper-white);
}

.page-about__section--timeline .section-header__title {
  color: var(--paper-white);
}

.page-about__section--timeline .section-header__index {
  color: var(--champion-gold);
}

.page-about__timeline-layout {
  display: grid;
  gap: 24px;
  margin-top: 36px;
}

.page-about__tl-rail {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 14px;
  background: rgba(0, 0, 0, 0.22);
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.page-about__tl-rail a {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 10px;
  color: var(--fog);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-decoration: none;
  border-left: 2px solid transparent;
}

.page-about__tl-rail a span {
  color: var(--champion-gold);
}

.page-about__tl-rail a:hover,
.page-about__tl-rail a:focus-visible {
  color: var(--signal-yellow);
  border-left-color: var(--signal-yellow);
  outline: none;
}

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

.page-about__timeline::before {
  content: "";
  position: absolute;
  left: 17px;
  top: 8px;
  bottom: 16px;
  width: 3px;
  background: repeating-linear-gradient(
    to bottom,
    rgba(255, 179, 0, 0.75) 0 7px,
    transparent 7px 14px
  );
  border-radius: 2px;
}

.page-about__tl-item {
  position: relative;
  padding-left: 46px;
  margin-bottom: 22px;
}

.page-about__tl-item::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 10px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--champion-gold);
  box-shadow: 0 0 0 5px var(--about-gold-glow);
}

.page-about__tl-card {
  background: var(--about-card-glass);
  border: 1px solid var(--about-card-line);
  border-radius: 14px;
  padding: 16px 18px;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.page-about__tl-card:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: rgba(255, 179, 0, 0.5);
}

.page-about__tl-card .tag {
  display: inline-block;
  margin-bottom: 10px;
}

.page-about__tl-card h3 {
  margin: 0 0 8px;
  font-family: var(--font-editorial);
  font-size: 1.1rem;
  color: var(--paper-white);
}

.page-about__tl-card p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 0.88rem;
  line-height: 1.65;
  color: var(--fog);
}

.page-about__section--quality {
  background-color: var(--paper-white);
  color: var(--slate-gray);
}

.page-about__section--quality .section-header__title {
  color: var(--slate-gray);
}

.page-about__section--quality .section-header__meta {
  color: #666666;
}

.page-about__quality-grid {
  display: grid;
  gap: 28px;
  margin-top: 36px;
}

.page-about__quality-flow {
  display: grid;
  gap: 14px;
}

.page-about__quality-step {
  position: relative;
  background: #FFFFFF;
  border: 1px solid var(--fog);
  border-left-width: 4px;
  border-left-color: var(--blood-red);
  border-radius: 12px;
  padding: 18px 18px 16px;
}

.page-about__quality-step:nth-child(2) {
  border-left-color: var(--champion-gold);
}

.page-about__quality-step:nth-child(3) {
  border-left-color: var(--data-green);
}

.page-about__quality-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
  color: var(--blood-red);
  margin-bottom: 8px;
}

.page-about__quality-step:nth-child(2) .page-about__quality-num {
  color: var(--champion-gold);
}

.page-about__quality-step:nth-child(3) .page-about__quality-num {
  color: var(--data-green);
}

.page-about__quality-step h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 800;
  color: var(--carbon-black);
}

.page-about__quality-step p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 0.88rem;
  line-height: 1.65;
  color: #3A3A3A;
}

.page-about__quality-figure {
  margin: 0;
  border-radius: 14px;
  overflow: hidden;
  background: #E0E0E0;
  border: 1px solid #DDDDDD;
}

.page-about__quality-figure img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.page-about__quality-note {
  margin: 28px 0 0;
  padding: 18px 20px;
  border-left: 4px solid var(--signal-yellow);
  background: #FFFFFF;
  border-radius: 12px;
  font-family: var(--font-body);
  font-size: 0.92rem;
  line-height: 1.75;
  color: #2A2A2A;
}

.page-about__section--scale {
  background-color: #16231c;
  background-image: linear-gradient(rgba(0, 230, 118, 0.05) 1px, transparent 1px);
  background-size: 28px 28px;
  color: var(--paper-white);
}

.page-about__section--scale .section-header__title {
  color: var(--paper-white);
}

.page-about__section--scale .section-header__meta {
  color: #B0B0B0;
}

.page-about__stats-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 32px 0 28px;
}

.page-about__stats-row .stat {
  background: rgba(0, 0, 0, 0.28);
  border-left: 4px solid var(--champion-gold);
  border-radius: 10px;
  padding: 14px 12px;
  min-width: 0;
}

.page-about__stats-row .stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--signal-yellow);
}

.page-about__stats-row .stat__label {
  display: block;
  margin-top: 6px;
  font-family: var(--font-body);
  font-size: 0.74rem;
  color: var(--fog);
}

.page-about__scale-grid {
  display: grid;
  gap: 16px;
}

.page-about__scale-grid .card--glass {
  background: var(--about-card-glass);
  border: 1px solid var(--about-card-line);
  border-radius: 14px;
  padding: 18px 18px;
}

.page-about__scale-leagues h3,
.page-about__scale-use h3 {
  margin: 0 0 12px;
  font-family: var(--font-editorial);
  font-size: 1.05rem;
  color: var(--paper-white);
}

.page-about__scale-leagues ul,
.page-about__scale-use ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about__scale-leagues li,
.page-about__scale-use li {
  position: relative;
  padding: 7px 0 7px 22px;
  font-family: var(--font-body);
  font-size: 0.88rem;
  color: var(--fog);
  line-height: 1.5;
}

.page-about__scale-leagues li::before,
.page-about__scale-use li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--data-green);
  box-shadow: 0 0 0 4px rgba(0, 230, 118, 0.15);
}

.page-about__scale-use li::before {
  background: var(--champion-gold);
  box-shadow: 0 0 0 4px var(--about-gold-glow);
}

.page-about__scale-figure {
  margin: 4px 0 0;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--about-card-line);
  background: #0B1E36;
}

.page-about__scale-figure img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  aspect-ratio: 3 / 1;
}

.page-about__scale-figure figcaption {
  padding: 10px 14px;
  color: #C8C8C8;
  font-size: 0.78rem;
}

.page-about__bar-chart {
  display: grid;
  gap: 10px;
  margin-top: 28px;
  padding: 18px 16px;
  background: rgba(0, 0, 0, 0.25);
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.page-about__bar-row {
  display: grid;
  grid-template-columns: 74px minmax(0, 1fr);
  gap: 12px;
  align-items: center;
}

.page-about__bar-name {
  font-family: var(--font-body);
  font-size: 0.82rem;
  color: var(--fog);
}

.page-about__bar-track {
  display: block;
  height: 24px;
  background: rgba(255, 255, 255, 0.07);
  border-radius: 6px;
  overflow: hidden;
}

.page-about__bar-fill {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  height: 100%;
  padding-right: 10px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: #111111;
  border-radius: 6px;
  background: var(--champion-gold);
  min-width: 84px;
  transition: filter 0.25s ease;
}

.page-about__bar-fill--1 {
  width: 100%;
  background: linear-gradient(90deg, var(--blood-red), var(--champion-gold));
}

.page-about__bar-fill--2 {
  width: 26%;
  background: linear-gradient(90deg, var(--field-green), var(--data-green));
}

.page-about__bar-fill--3 {
  width: 12%;
  background: linear-gradient(90deg, var(--night-blue), var(--data-green));
}

.page-about__bar-fill:hover {
  filter: saturate(1.4) brightness(1.12);
}

.page-about__section--qualify {
  background-color: var(--night-blue);
  color: var(--paper-white);
}

.page-about__section--qualify .section-header__title {
  color: var(--paper-white);
}

.page-about__section--qualify .section-header__meta {
  color: #B0B0B0;
}

.page-about__qualify-grid {
  display: grid;
  gap: 16px;
  margin-top: 36px;
}

.page-about__qualify-card {
  background: var(--about-card-glass);
  border: 1px solid var(--about-card-line);
  border-radius: 14px;
  padding: 18px;
}

.page-about__qualify-card .tag {
  display: inline-block;
  margin-bottom: 10px;
}

.page-about__qualify-card h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 1.04rem;
  font-weight: 800;
  font-style: italic;
  color: var(--paper-white);
}

.page-about__qualify-card p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 0.88rem;
  line-height: 1.65;
  color: var(--fog);
}

.page-about__trust {
  margin: 28px 0 0;
  padding: 16px 18px;
  background: rgba(0, 0, 0, 0.24);
  border-left: 4px solid var(--blood-red);
  border-radius: 12px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  line-height: 1.7;
  color: #D8D8D8;
}

.page-about__next {
  background-color: var(--paper-white);
  color: var(--slate-gray);
  padding-top: 64px;
  padding-bottom: 64px;
}

.page-about__next .section-header__title {
  color: var(--slate-gray);
}

.page-about__next .section-header__meta {
  color: #666666;
}

.page-about__next-grid {
  display: grid;
  gap: 14px;
  margin-top: 32px;
}

.page-about__next-card {
  display: block;
  padding: 20px 18px;
  background: #FFFFFF;
  border: 1px solid var(--fog);
  border-radius: 14px;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
}

.page-about__next-card:hover,
.page-about__next-card:focus-visible {
  border-color: var(--blood-red);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.1);
  transform: translateY(-3px);
  outline: none;
}

.page-about__next-kicker {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--blood-red);
  margin-bottom: 6px;
}

.page-about__next-card h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 1.08rem;
  color: var(--carbon-black);
  font-weight: 800;
}

.page-about__next-card p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 0.86rem;
  line-height: 1.6;
  color: #4A4A4A;
}

@media (min-width: 768px) {
  .page-about__hero-inner {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: center;
    gap: 48px;
    padding-top: 44px;
    padding-bottom: 56px;
  }

  .page-about__railbar {
    justify-content: center;
    padding: 16px 0 22px;
  }

  .page-about__origin-grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    align-items: start;
  }

  .page-about__timeline-layout {
    grid-template-columns: 190px minmax(0, 1fr);
    gap: 36px;
    align-items: start;
  }

  .page-about__tl-rail {
    position: sticky;
    top: 96px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    background: transparent;
    border: 0;
    padding: 0;
  }

  .page-about__tl-rail a {
    font-size: 0.84rem;
    padding: 10px 8px;
  }

  .page-about__quality-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    gap: 32px;
  }

  .page-about__stats-row {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-about__scale-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about__scale-figure {
    grid-column: 1 / -1;
  }

  .page-about__qualify-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about__next-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .page-about__section {
    padding-top: 88px;
    padding-bottom: 88px;
  }

  .page-about__quantity-note {
    max-width: 840px;
    margin-left: auto;
    margin-right: auto;
  }

  .page-about__next-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}