.page-about {
  --about-node: 72px;
  --about-gold-fade: rgba(232, 184, 75, 0.14);
  --about-red-fade: rgba(179, 18, 60, 0.08);
  background: var(--bg-main);
  color: var(--text-main);
}

.page-about .about-hero {
  position: relative;
  padding-top: 36px;
  padding-bottom: 48px;
  border-bottom: var(--border-thick);
  background:
    radial-gradient(circle at 85% 8%, var(--about-gold-fade), transparent 46%),
    linear-gradient(160deg, var(--bg-panel) 0%, var(--bg-main) 100%);
}

.page-about .about-breadcrumb {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-sub);
  margin-bottom: 28px;
}

.page-about .about-breadcrumb a {
  color: var(--neon-blue);
  text-decoration: none;
  transition: color 0.2s var(--ease-out);
}

.page-about .about-breadcrumb a:hover {
  color: var(--gold-bright);
}

.page-about .about-breadcrumb-sep {
  margin: 0 8px;
  opacity: 0.6;
}

.page-about .about-hero-grid {
  display: grid;
  gap: 28px;
}

.page-about .about-hero-heading h1 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(2.2rem, 8vw, 4rem);
  line-height: 1.12;
  margin: 12px 0 18px;
  letter-spacing: 0.02em;
}

.page-about .about-hero-lead {
  max-width: 34em;
  color: var(--text-sub);
  font-size: 0.98rem;
  line-height: 1.8;
}

.page-about .about-hero-aside {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 26px 22px 22px;
  background: var(--bg-float);
  border: var(--border-thick);
  box-shadow: var(--shadow-strong);
}

.page-about .about-hero-aside::before {
  content: "";
  position: absolute;
  top: -8px;
  right: -8px;
  width: 56px;
  height: 56px;
  background:
    linear-gradient(135deg, transparent 46%, var(--gold) 47% 58%, transparent 59%);
}

.page-about .about-hero-aside::after {
  content: "EST. 2016";
  position: absolute;
  top: -11px;
  left: 16px;
  padding: 2px 8px;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.16em;
  color: var(--neon-blue);
  background: var(--bg-main);
  border: 1px solid var(--border-line);
}

.page-about .about-hero-aside p {
  margin: 0;
  color: var(--text-sub);
  font-size: 0.9rem;
  line-height: 1.7;
}

.page-about .about-hero-tag {
  align-self: flex-start;
}

.page-about .about-hero-index {
  display: flex;
  align-items: baseline;
  gap: 10px;
  border-top: 1px solid var(--border-line);
  padding-top: 14px;
}

.page-about .about-hero-index-num {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 2.4rem;
  line-height: 1;
  color: var(--gold-bright);
}

.page-about .about-hero-index-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--text-sub);
  text-transform: uppercase;
}

.page-about .about-catalog {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 20px;
  margin-top: 36px;
  padding: 16px 18px;
  background: rgba(20, 11, 34, 0.72);
  border: 1px solid var(--border-line);
}

.page-about .about-catalog-title {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-about .about-catalog-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-catalog-list a {
  color: var(--text-main);
  font-size: 0.82rem;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s, color 0.2s var(--ease-out);
}

.page-about .about-catalog-list a:hover {
  color: var(--gold-bright);
  border-color: var(--gold-bright);
}

.page-about .about-section {
  padding-top: 56px;
  padding-bottom: 16px;
}

.page-about .about-section + .about-section {
  border-top: var(--border-thick);
}

.page-about .section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 32px;
  padding-left: 16px;
  border-left: 4px solid var(--gold);
}

.page-about .section-head h2 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.5rem, 4vw, 2.4rem);
  margin: 0;
}

.page-about .section-head-desc {
  margin: 0 0 0 8px;
  color: var(--text-sub);
  font-size: 0.86rem;
}

.page-about .about-overview-grid {
  display: grid;
  gap: 32px;
  align-items: start;
}

.page-about .about-overview-copy p {
  margin: 0 0 18px;
  color: var(--text-main);
  line-height: 1.9;
}

.page-about .about-overview-point {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  margin: 20px 0;
  padding-left: 16px;
  border-left: 3px solid var(--neon-blue);
}

.page-about .about-point-num {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--neon-blue);
}

.page-about .about-overview-point p {
  margin: 0;
  color: var(--text-sub);
  font-size: 0.9rem;
}

.page-about .about-overview-media {
  margin: 0;
  border: var(--border-thick);
  box-shadow: var(--shadow-strong);
}

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

.page-about .about-overview-media figcaption {
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--text-sub);
  background: var(--bg-panel);
  border-top: 1px solid var(--border-line);
}

.page-about .about-milestone-section {
  padding-top: 40px;
  padding-bottom: 64px;
  background: linear-gradient(180deg, var(--bg-main) 0%, var(--bg-panel) 100%);
  overflow: hidden;
}

.page-about .about-curve {
  display: block;
  width: 100%;
  height: 80px;
  margin: 8px 0 0;
  pointer-events: none;
}

.page-about .about-timeline-wrap {
  position: relative;
}

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

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: calc(var(--about-node) / 2 - 1px);
  width: 3px;
  background: linear-gradient(180deg, var(--gold), var(--neon-blue) 60%, var(--red-alert));
  opacity: 0.6;
}

.page-about .about-milestone {
  position: relative;
  display: grid;
  grid-template-columns: var(--about-node) 1fr;
  gap: 20px;
  align-items: start;
  margin-bottom: 40px;
}

.page-about .about-milestone-node {
  grid-column: 1;
  grid-row: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: var(--about-node);
  height: var(--about-node);
  background: var(--bg-panel);
  border: 2px solid var(--gold);
  clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
  text-align: center;
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--gold-bright);
  line-height: 1.1;
  transition: filter 0.25s var(--ease-out), transform 0.25s var(--ease-out);
}

.page-about .about-node-year {
  font-size: 0.82rem;
  letter-spacing: 0.04em;
}

.page-about .about-node-tag {
  margin-top: 3px;
  font-size: 0.56rem;
  letter-spacing: 0.08em;
  color: var(--neon-blue);
}

.page-about .about-milestone:hover .about-milestone-node {
  transform: scale(1.06);
  filter: drop-shadow(0 0 10px rgba(232, 184, 75, 0.55));
}

.page-about .about-milestone-body {
  position: relative;
  grid-column: 2;
  grid-row: 1;
  padding: 18px 20px;
  background: var(--bg-float);
  border: 1px solid var(--border-line);
  box-shadow: var(--shadow-strong);
}

.page-about .about-milestone-body h3 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 1.12rem;
  color: var(--gold-bright);
}

.page-about .about-milestone-body p {
  margin: 0;
  color: var(--text-sub);
  font-size: 0.88rem;
  line-height: 1.75;
}

.page-about .about-milestone-tag {
  display: inline-block;
  margin-top: 12px;
  padding: 4px 8px;
  border: 1px solid var(--border-line);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  color: var(--neon-blue);
}

.page-about .about-milestone-final .about-milestone-node {
  background: linear-gradient(135deg, var(--gold), var(--red-alert));
  border-color: var(--gold-bright);
}

.page-about .about-milestone-final .about-node-year,
.page-about .about-milestone-final .about-node-tag {
  color: var(--bg-main);
  font-weight: 700;
}

.page-about .about-version-figure {
  margin: 8px 0 0;
  background: var(--bg-panel);
  border: var(--border-thick);
  box-shadow: var(--shadow-strong);
}

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

.page-about .about-version-figure figcaption {
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--text-sub);
  border-top: 1px solid var(--border-line);
}

.page-about .about-intro {
  max-width: 38em;
  margin: 0 0 32px;
  color: var(--text-sub);
  line-height: 1.8;
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 28px;
}

.page-about .about-stat-cell {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 24px 18px 20px;
  background: var(--bg-panel);
  border: 1px solid var(--border-line);
  transition: border-color 0.2s, box-shadow 0.2s var(--ease-out);
}

.page-about .about-stat-cell::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 30px;
  height: 4px;
  background: var(--gold);
}

.page-about .about-stat-cell:first-child {
  border-color: var(--gold);
  background: linear-gradient(145deg, rgba(232, 184, 75, 0.14), var(--bg-panel) 55%);
}

.page-about .about-stat-cell:hover {
  border-color: var(--gold);
  box-shadow: var(--shadow-gold);
}

.page-about .about-stat-num {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.8rem, 7vw, 4.2rem);
  line-height: 1;
  color: var(--gold-bright);
}

.page-about .about-stat-unit {
  margin-left: 6px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--neon-blue);
}

.page-about .about-stat-label {
  margin-top: 14px;
  font-size: 0.84rem;
  letter-spacing: 0.04em;
  color: var(--text-sub);
}

.page-about .about-ecosystem {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 20px;
  background: rgba(20, 11, 34, 0.5);
  border: 1px dashed var(--border-line);
}

.page-about .about-ecosystem-label {
  margin-right: 8px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-about .about-service-grid {
  display: grid;
  gap: 32px;
}

.page-about .about-service-copy {
  display: grid;
  gap: 16px;
}

.page-about .about-service-item {
  display: flex;
  gap: 18px;
  align-items: stretch;
  padding: 18px;
  background: var(--bg-panel);
  border: 1px solid var(--border-line);
}

.page-about .about-service-code {
  flex: 0 0 auto;
  align-self: center;
  width: 64px;
  padding: 10px 0;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  color: var(--bg-main);
  background: linear-gradient(135deg, var(--gold), var(--gold-bright));
  border-radius: 0 12px 12px 0;
}

.page-about .about-service-item h3 {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 1rem;
  color: var(--gold-bright);
}

.page-about .about-service-item p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--text-sub);
}

.page-about .about-service-media {
  margin: 0;
  background: var(--bg-panel);
  border: var(--border-thick);
  box-shadow: var(--shadow-strong);
}

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

.page-about .about-service-media figcaption {
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--text-sub);
  border-top: 1px solid var(--border-line);
}

.page-about .about-score-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px;
  margin-top: 28px;
  padding: 20px 22px;
  background: var(--about-red-fade);
  border-left: 4px solid var(--red-alert);
}

.page-about .about-score-num {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 2.6rem;
  line-height: 1;
  color: var(--gold-bright);
}

.page-about .about-score-den {
  font-size: 1rem;
  font-family: var(--font-body);
  color: var(--text-sub);
}

.page-about .about-score-strip p {
  flex: 1;
  min-width: 220px;
  margin: 0;
  color: var(--text-sub);
  font-size: 0.88rem;
  line-height: 1.8;
}

.page-about .about-license-panel {
  display: grid;
  gap: 24px;
  padding: 28px 24px;
  background: var(--bg-panel);
  border: var(--border-thick);
  border-top-color: var(--gold);
  box-shadow: var(--shadow-strong);
}

.page-about .about-license-badge {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  background: var(--bg-float);
  border: 1px solid var(--border-line);
}

.page-about .about-license-ico {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.78rem;
  color: var(--bg-main);
  background: linear-gradient(135deg, var(--gold), var(--gold-bright));
  clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
}

.page-about .about-license-num {
  font-family: var(--font-mono);
  font-size: clamp(1rem, 3vw, 1.5rem);
  letter-spacing: 0.04em;
  color: var(--gold-bright);
}

.page-about .about-license-copy p {
  margin: 0 0 14px;
  color: var(--text-sub);
  font-size: 0.92rem;
  line-height: 1.8;
}

.page-about .about-license-copy p:last-child {
  margin-bottom: 0;
}

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

.page-about .about-extras-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  overflow: hidden;
  padding: 24px 20px 20px;
  background: var(--bg-panel);
  border: 1px solid var(--border-line);
  text-decoration: none;
  color: var(--text-main);
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s var(--ease-out);
}

.page-about .about-extras-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--gold), var(--neon-blue));
  transform: scaleX(0.3);
  transform-origin: left;
  transition: transform 0.28s var(--ease-out);
}

.page-about .about-extras-card:hover {
  border-color: var(--gold);
  box-shadow: var(--shadow-gold);
  transform: translateY(-3px);
}

.page-about .about-extras-card:hover::before {
  transform: scaleX(1);
}

.page-about .about-extras-index {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--neon-blue);
}

.page-about .about-extras-title {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 1.06rem;
  color: var(--gold-bright);
}

.page-about .about-extras-desc {
  font-size: 0.84rem;
  line-height: 1.6;
  color: var(--text-sub);
}

@media (min-width: 720px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, 1fr);
  }

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

@media (min-width: 768px) {
  .page-about .about-license-panel {
    grid-template-columns: 0.8fr 1.2fr;
    align-items: center;
  }
}

@media (min-width: 900px) {
  .page-about {
    --about-node: 112px;
  }

  .page-about .about-timeline::before {
    left: 50%;
    transform: translateX(-50%);
  }

  .page-about .about-milestone {
    grid-template-columns: 1fr 120px 1fr;
    grid-template-areas: "left node right";
    gap: 0;
    margin-bottom: 56px;
  }

  .page-about .about-milestone-node {
    grid-area: node;
    margin: 0 auto;
  }

  .page-about .about-node-year {
    font-size: 1rem;
  }

  .page-about .about-node-tag {
    font-size: 0.62rem;
  }

  .page-about .about-milestone-body {
    grid-area: left;
    margin-right: 56px;
  }

  .page-about .about-milestone-body::after {
    content: "";
    position: absolute;
    top: 50%;
    right: -56px;
    width: 56px;
    height: 2px;
    background: var(--gold);
  }

  .page-about .about-milestone:nth-child(even) .about-milestone-body {
    grid-area: right;
    margin-right: 0;
    margin-left: 56px;
  }

  .page-about .about-milestone:nth-child(even) .about-milestone-body::after {
    right: auto;
    left: -56px;
  }

  .page-about .about-service-grid {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: start;
  }
}

@media (min-width: 1080px) {
  .page-about .about-hero-grid {
    grid-template-columns: 1.4fr 0.6fr;
    align-items: end;
  }

  .page-about .about-overview-grid {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    transition: none !important;
    animation: none !important;
  }
}