.page-about {
  --about-red-soft: rgba(233, 33, 44, 0.14);
  --about-gold-soft: rgba(245, 163, 0, 0.18);
  --about-card-border: 1px solid var(--milan-soft-line);
}

.page-about .about-hero {
  padding: var(--space-6) 0 var(--space-7);
  background:
    radial-gradient(circle at 88% 10%, var(--about-red-soft), transparent 42%),
    linear-gradient(180deg, var(--milan-carbon) 0%, var(--milan-black) 88%);
}

.page-about .about-hero__grid {
  display: grid;
  gap: var(--space-6);
}

.page-about .about-hero__intro .page-intro {
  max-width: 54ch;
  margin-top: var(--space-4);
}

.page-about .about-hero__intro h1 {
  font-family: var(--display-font);
  font-size: clamp(2rem, 5vw, 3.6rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--milan-paper);
  margin: var(--space-4) 0 0;
}

.page-about .text-red {
  color: var(--milan-red);
}

.page-about .about-hero__facts {
  position: relative;
  overflow: hidden;
  padding: var(--space-5);
  border: 1px solid var(--milan-soft-line);
  border-top: 4px solid var(--milan-gold);
  background: linear-gradient(160deg, var(--milan-carbon-2), var(--milan-carbon));
}

.page-about .about-facts__title {
  font-family: var(--display-font);
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--milan-gold);
  margin: 0;
}

.page-about .about-facts__list {
  margin: var(--space-4) 0 0;
}

.page-about .about-facts__row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-4);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--milan-soft-line);
}

.page-about .about-facts__row:last-child {
  border-bottom: 0;
}

.page-about .about-facts__row dt {
  color: var(--milan-muted);
  font-size: 0.9rem;
}

.page-about .about-facts__row dd {
  margin: 0;
  font-family: var(--mono-font);
  font-weight: 700;
  color: var(--milan-paper);
  font-size: 1.05rem;
  white-space: nowrap;
}

.page-about .about-section {
  padding: var(--space-7) 0;
  border-top: 1px solid var(--milan-soft-line);
}

.page-about .about-section__head {
  max-width: var(--content-width);
  margin-bottom: var(--space-6);
}

.page-about .about-section__head h2 {
  font-family: var(--display-font);
  font-size: clamp(1.5rem, 3.6vw, 2.3rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--milan-paper);
  margin: var(--space-3) 0 var(--space-3);
}

.page-about .about-section__lead {
  color: var(--milan-muted);
  font-size: 1rem;
  line-height: 1.7;
  margin: 0;
}

.page-about .about-position {
  background:
    radial-gradient(circle at 8% 22%, var(--about-red-soft), transparent 34%),
    var(--milan-black);
}

.page-about .position-grid {
  display: grid;
  gap: var(--space-5);
  align-items: start;
}

.page-about .position-main {
  padding: var(--space-5);
  border: var(--about-card-border);
  background: linear-gradient(150deg, var(--milan-carbon), var(--milan-black));
}

.page-about .position-main > p {
  color: var(--milan-muted);
  line-height: 1.8;
  margin: 0 0 var(--space-4);
}

.page-about .position-main > p:last-of-type {
  margin-bottom: var(--space-5);
}

.page-about .position-media__img,
.page-about .milestones-banner__img,
.page-about .system-figure__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--milan-soft-line);
}

.page-about .position-aside {
  display: grid;
  gap: var(--space-4);
}

.page-about .position-point {
  padding: var(--space-5);
  border: var(--about-card-border);
  background: linear-gradient(160deg, var(--milan-carbon), var(--milan-black));
  transition: transform var(--ease-spring), border-color var(--transition);
}

.page-about .position-point:hover {
  border-color: var(--milan-gold);
  transform: translateY(-3px);
}

.page-about .position-point__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  margin-bottom: var(--space-3);
  color: var(--milan-gold);
  background: var(--milan-black);
  border: 1px solid var(--milan-soft-line);
  border-radius: 10px;
}

.page-about .position-point__icon svg {
  width: 20px;
  height: 20px;
}

.page-about .position-point h3 {
  font-family: var(--display-font);
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--milan-paper);
  margin: 0 0 var(--space-2);
}

.page-about .position-point p {
  font-size: 0.95rem;
  color: var(--milan-muted);
  line-height: 1.7;
  margin: 0;
}

.page-about .about-milestones {
  background:
    radial-gradient(circle at 12% 28%, rgba(233, 33, 44, 0.08), transparent 40%),
    linear-gradient(180deg, var(--milan-black) 0%, var(--milan-carbon) 100%);
}

.page-about .milestones-banner {
  margin: 0 0 var(--space-6);
}

.page-about .milestones-timeline {
  position: relative;
  margin: 0;
  padding-left: var(--space-7);
  border-left: 2px solid var(--milan-soft-line);
}

.page-about .milestone-item {
  position: relative;
  padding-bottom: var(--space-6);
}

.page-about .milestone-item::before {
  content: "";
  position: absolute;
  top: 6px;
  left: calc(-1 * var(--space-7) - 9px);
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--milan-black);
  border: 3px solid var(--milan-red);
  box-shadow: 0 0 0 5px var(--about-red-soft);
}

.page-about .milestone-item[data-open]::before {
  border-color: var(--milan-gold);
  box-shadow: 0 0 0 5px var(--about-gold-soft);
}

.page-about .milestone-item__heading {
  margin: 0;
}

.page-about .milestone-item__heading .accordion-trigger {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  width: 100%;
  padding: 0;
  border: 0;
  background: none;
  color: var(--milan-paper);
  font-family: var(--display-font);
  text-align: left;
  cursor: pointer;
}

.page-about .milestone-item__year {
  font-family: var(--mono-font);
  font-weight: 800;
  font-size: 1.65rem;
  color: var(--milan-gold);
  min-width: 3.4em;
}

.page-about .milestone-item__label {
  font-size: clamp(1.05rem, 2.4vw, 1.4rem);
  font-weight: 700;
}

.page-about .milestone-item .accordion-trigger__icon {
  position: relative;
  width: 18px;
  height: 18px;
  margin-left: auto;
  flex: none;
}

.page-about .milestone-item .accordion-trigger__icon::before,
.page-about .milestone-item .accordion-trigger__icon::after {
  content: "";
  position: absolute;
  background: var(--milan-gold);
  transition: transform var(--transition);
}

.page-about .milestone-item .accordion-trigger__icon::before {
  top: 8px;
  left: 0;
  width: 18px;
  height: 2px;
}

.page-about .milestone-item .accordion-trigger__icon::after {
  left: 8px;
  top: 0;
  width: 2px;
  height: 18px;
}

.page-about .milestone-item[data-open] .accordion-trigger__icon::after {
  transform: scaleY(0);
}

.page-about .milestone-item[data-open] .accordion-panel {
  display: block;
}

.page-about .milestone-item .accordion-panel {
  display: none;
}

.page-about .milestone-item__body {
  padding: var(--space-4) 0 0;
  max-width: 62ch;
}

.page-about .milestone-item__body p {
  color: var(--milan-muted);
  line-height: 1.8;
  font-size: 0.98rem;
  margin: 0;
}

.page-about .about-system {
  background:
    radial-gradient(circle at 90% 12%, var(--about-gold-soft), transparent 30%),
    var(--milan-black);
}

.page-about .system-grid {
  display: grid;
  gap: var(--space-6);
}

.page-about .system-group {
  display: grid;
  gap: var(--space-5);
}

.page-about .system-card {
  position: relative;
  padding: var(--space-5);
  border: var(--about-card-border);
  background: linear-gradient(140deg, var(--milan-carbon), var(--milan-black));
  transition: transform var(--ease-spring), border-color var(--transition), box-shadow var(--transition);
}

.page-about .system-card--quick {
  border-top: 3px solid var(--milan-red);
}

.page-about .system-card--replay {
  border-top: 3px solid var(--milan-gold);
}

.page-about .system-card--guide {
  border-top: 3px solid var(--milan-white);
}

.page-about .system-card--feedback {
  border-top: 3px solid var(--milan-success);
}

.page-about .system-card:hover {
  transform: translateY(-4px) scale(1.01);
  border-color: var(--milan-gold);
  box-shadow: 0 18px 36px rgba(0, 0, 0, 0.3);
}

.page-about .system-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}

.page-about .system-card__num {
  font-family: var(--mono-font);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--milan-gold);
}

.page-about .system-card__icon {
  display: inline-flex;
  width: 30px;
  height: 30px;
  color: var(--milan-muted);
}

.page-about .system-card__icon svg {
  width: 100%;
  height: 100%;
}

.page-about .system-card h3 {
  font-family: var(--display-font);
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--milan-paper);
  margin: 0 0 var(--space-3);
}

.page-about .system-card p {
  color: var(--milan-muted);
  font-size: 0.95rem;
  line-height: 1.75;
  margin: 0;
}

.page-about .system-card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-4);
  color: var(--milan-red);
  font-weight: 600;
  text-decoration: none;
  font-size: 0.95rem;
  transition: color var(--transition);
}

.page-about .system-card__link:hover {
  color: var(--milan-gold);
}

.page-about .system-figure {
  margin: 0;
  align-self: center;
}

.page-about .system-figure figcaption {
  margin-top: var(--space-3);
  font-size: 0.9rem;
  color: var(--milan-muted);
  line-height: 1.6;
  text-align: center;
  max-width: 40ch;
  margin-left: auto;
  margin-right: auto;
}

.page-about .about-support {
  background: linear-gradient(180deg, var(--milan-carbon), var(--milan-black));
}

.page-about .support-grid {
  display: grid;
  gap: var(--space-5);
}

.page-about .support-card {
  padding: var(--space-5);
  border: var(--about-card-border);
  background: linear-gradient(160deg, var(--milan-carbon), var(--milan-carbon-2));
}

.page-about .support-card h3 {
  font-family: var(--display-font);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--milan-paper);
  margin: 0 0 var(--space-4);
}

.page-about .support-card ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .support-card li {
  position: relative;
  padding: var(--space-3) 0 var(--space-3) var(--space-5);
  color: var(--milan-muted);
  line-height: 1.65;
  font-size: 0.98rem;
  border-bottom: 1px solid var(--milan-soft-line);
}

.page-about .support-card li:last-child {
  border-bottom: 0;
}

.page-about .support-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.25em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--milan-red);
}

.page-about .support-card li strong,
.page-about .support-card p strong {
  color: var(--milan-gold);
  font-family: var(--mono-font);
  font-weight: 700;
}

.page-about .support-card p {
  color: var(--milan-muted);
  line-height: 1.75;
  font-size: 0.95rem;
  margin: 0 0 var(--space-4);
}

.page-about .support-card .support-card__note {
  margin-top: var(--space-4);
  font-size: 0.9rem;
}

.page-about .support-card .btn {
  margin-top: var(--space-4);
}

@media (min-width: 768px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(280px, 0.65fr);
    align-items: start;
    gap: var(--space-7);
  }

  .page-about .position-grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(280px, 0.7fr);
    gap: var(--space-6);
  }

  .page-about .position-main {
    padding: var(--space-6);
  }

  .page-about .milestones-timeline {
    max-width: 820px;
  }

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

  .page-about .support-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .page-about .about-hero {
    padding-top: var(--space-8);
  }

  .page-about .system-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.8fr);
    gap: var(--space-7);
  }

  .page-about .system-figure__img {
    border-radius: var(--radius);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .position-point,
  .page-about .system-card,
  .page-about .milestone-item .accordion-trigger__icon::before,
  .page-about .milestone-item .accordion-trigger__icon::after {
    transition: none;
    transform: none;
  }

  .page-about .system-card:hover,
  .page-about .position-point:hover {
    transform: none;
  }
}