.page-about {
  --about-rail-width: 280px;
  background: var(--bg-deep);
  color: var(--ink);
  overflow-x: hidden;
}

.page-about .about-hero {
  position: relative;
  padding: 2rem 1.25rem 2.75rem;
  background:
    linear-gradient(135deg, rgba(138, 43, 226, 0.32) 0%, rgba(11, 29, 58, 0) 42%),
    radial-gradient(circle at 78% 20%, rgba(30, 144, 255, 0.14) 0%, transparent 44%),
    var(--bg-deep);
  border-bottom: 1px solid var(--line);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(-45deg, transparent 0 15px, rgba(138, 43, 226, 0.06) 15px 16px);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 6px;
  background: linear-gradient(90deg, var(--accent) 0 30%, var(--line) 30% 70%, var(--blue) 70% 100%);
  opacity: 0.5;
}

.page-about .about-hero__inner {
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.page-about .about-hero__crumbs {
  margin-bottom: 1.5rem;
}

.page-about .about-hero__kicker {
  margin: 0 0 0.75rem;
  color: var(--lime);
  letter-spacing: 0.1em;
}

.page-about .about-hero__title {
  max-width: 18em;
  font-size: clamp(1.875rem, 4.5vw, 3rem);
  line-height: 1.18;
  margin: 0 0 1rem;
  letter-spacing: -0.01em;
}

.page-about .about-hero__lede {
  max-width: 42em;
  margin: 0 0 1.5rem;
  color: var(--muted);
  font-size: 1.0625rem;
  line-height: 1.75;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.page-about .about-layout {
  max-width: 1200px;
  margin: 0 auto;
  display: block;
  padding: 0;
}

.page-about .about-rail {
  padding: 1.5rem 1.25rem 0;
  position: relative;
}

.page-about .about-rail__inner {
  position: relative;
  padding: 1.75rem 1.5rem 1.5rem;
  background:
    linear-gradient(180deg, rgba(138, 43, 226, 0.18) 0%, rgba(18, 42, 76, 0.7) 70%),
    var(--bg-ocean);
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 0 100%);
  border-left: 3px solid var(--accent);
}

.page-about .about-rail__brand {
  margin: 0;
  font-family: var(--font-headline);
  font-size: 1.125rem;
  color: var(--ink);
  letter-spacing: 0.02em;
}

.page-about .about-rail__ver {
  margin: 0.25rem 0 0;
  font-family: var(--font-mono);
  font-size: 2.75rem;
  font-weight: 700;
  line-height: 1;
  color: var(--lime);
  letter-spacing: -0.04em;
}

.page-about .about-rail__caption {
  margin: 0.5rem 0 0;
  font-size: 0.8125rem;
  color: var(--muted);
  letter-spacing: 0.08em;
}

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

.page-about .about-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.375rem;
}

.page-about .about-rail__link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 0.625rem;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9375rem;
  border-bottom: 1px solid rgba(46, 64, 83, 0.65);
  transition:
    color 0.2s ease,
    background-color 0.2s ease,
    border-color 0.2s ease;
}

.page-about .about-rail__link:hover,
.page-about .about-rail__link:focus,
.page-about .about-rail__link.is-active {
  color: var(--lime);
  background: rgba(57, 255, 20, 0.08);
  border-bottom-color: rgba(57, 255, 20, 0.35);
}

.page-about .about-rail__num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--blue);
}

.page-about .about-railtag {
  display: inline-block;
  margin-top: 1.75rem;
  padding: 0.25rem 0.625rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--lime);
  border: 1px solid rgba(57, 255, 20, 0.45);
  background: rgba(57, 255, 20, 0.08);
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 0 100%);
}

.page-about .about-rail__note {
  margin: 0.75rem 0 0;
  color: var(--muted);
  font-size: 0.875rem;
  line-height: 1.5;
}

.page-about .about-rail__tip {
  margin: 1.25rem 0 0;
  font-size: 0.8125rem;
  color: var(--yellow);
  border-left: 2px solid var(--yellow);
  padding-left: 0.75rem;
  line-height: 1.6;
}

.page-about .about-content {
  min-width: 0;
}

.page-about .about-section {
  position: relative;
  padding: 2.5rem 1.25rem 3rem;
  border-top: 1px solid var(--line);
  scroll-margin-top: 96px;
}

.page-about .about-section::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 10px;
  background: linear-gradient(90deg, var(--accent) 0 28%, var(--line) 28% 72%, var(--blue) 72% 100%);
  opacity: 0.32;
  pointer-events: none;
}

.page-about .about-section__head {
  margin-bottom: 1.75rem;
}

.page-about .about-section__index {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--blue);
}

.page-about .about-section__index::before {
  content: "";
  width: 2.25rem;
  height: 2px;
  background: var(--accent);
}

.page-about .about-section__title {
  margin: 0.875rem 0 0;
  font-size: clamp(1.625rem, 3vw, 2.125rem);
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.page-about .about-mission {
  display: grid;
  gap: 1.5rem;
}

.page-about .about-mission__copy p {
  margin: 0 0 1rem;
  line-height: 1.75;
  color: var(--muted);
}

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

.page-about .about-mission__lead {
  font-size: 1.0625rem;
  color: var(--ink) !important;
}

.page-about .about-mission__figure {
  margin: 0;
}

.page-about .about-mission__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  background: linear-gradient(135deg, var(--bg-ocean), var(--bg-deep));
  border: 1px solid var(--line);
}

.page-about .about-figure__caption {
  margin-top: 0.625rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
}

.page-about .about-value-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  margin-top: 2.25rem;
}

.page-about .about-value-item {
  position: relative;
  padding: 1.25rem 1.375rem;
  background: var(--bg-ocean);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
  border-left: 2px solid var(--blue);
}

.page-about .about-value-item__num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--blue);
}

.page-about .about-value-item h3 {
  margin: 0.625rem 0 0.375rem;
  font-size: 1.0625rem;
  color: var(--ink);
}

.page-about .about-value-item p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--muted);
}

.page-about .about-schedule__lead {
  margin: 0 0 1.75rem;
  color: var(--muted);
  line-height: 1.75;
}

.page-about .about-schedule__lead a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .about-timeline {
  position: relative;
  margin: 0 0 1.75rem;
  padding-left: 1.625rem;
  border-left: 2px solid var(--accent);
}

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 1.5rem;
  margin-left: 1.25rem;
}

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

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -1.625rem;
  top: 0.375rem;
  width: 10px;
  height: 10px;
  transform: rotate(45deg);
  background: var(--lime);
}

.page-about .about-timeline__label {
  display: block;
  margin-bottom: 0.375rem;
  font-family: var(--font-headline);
  font-size: 1.0625rem;
  color: var(--ink);
}

.page-about .about-timeline__desc {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--muted);
}

.page-about .about-schedule__btn {
  margin-top: 0.5rem;
}

.page-about .about-media {
  margin: 2rem 0 0;
}

.page-about .about-media__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  background: linear-gradient(90deg, var(--bg-ocean), var(--bg-deep));
  border: 1px solid var(--line);
}

.page-about .about-media figcaption {
  margin-top: 0.625rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
}

.page-about .about-transparency__lead {
  margin: 0 0 1.5rem;
  color: var(--muted);
  line-height: 1.75;
}

.page-about .about-rule-strip {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1rem 1.25rem;
  margin-bottom: 1.75rem;
  background: rgba(255, 215, 0, 0.1);
  border-left: 4px solid var(--yellow);
}

.page-about .about-rule-strip__tag {
  align-self: flex-start;
  padding: 0.1875rem 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--yellow);
  border: 1px solid rgba(255, 215, 0, 0.45);
}

.page-about .about-rule-strip p {
  margin: 0;
  color: var(--ink);
  line-height: 1.65;
}

.page-about .about-steps {
  list-style: none;
  margin: 0 0 1.75rem;
  padding: 0;
  display: grid;
  gap: 0.875rem;
}

.page-about .about-steps li {
  padding: 1.375rem 1.5rem;
  background: var(--bg-ocean);
  border-left: 2px solid var(--accent);
}

.page-about .about-steps__num {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--lime);
  letter-spacing: 0.06em;
}

.page-about .about-steps h3 {
  margin: 0.5rem 0 0.375rem;
  font-size: 1.125rem;
  color: var(--ink);
}

.page-about .about-steps p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--muted);
}

.page-about .about-tags__lead {
  margin: 0 0 1.75rem;
  color: var(--muted);
  line-height: 1.75;
}

.page-about .about-tag-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  margin-bottom: 1.75rem;
}

.page-about .about-tag-cell {
  padding: 1.25rem 1.375rem;
  background: var(--bg-ocean);
  border: 1px solid var(--line);
  border-top: 2px solid var(--blue);
}

.page-about .about-tag-cell__num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
}

.page-about .about-tag-cell h3 {
  margin: 0.5rem 0 0.375rem;
  font-size: 1.0625rem;
  color: var(--ink);
}

.page-about .about-tag-cell p {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.55;
  color: var(--muted);
}

.page-about .about-tag-cell--hot {
  background: rgba(57, 255, 20, 0.08);
  border-top-color: var(--lime);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
}

.page-about .about-tag-cell--hot h3 {
  color: var(--lime);
}

.page-about .about-favtip {
  padding: 1rem 1.25rem;
  border: 1px dashed var(--blue);
  background: rgba(30, 144, 255, 0.06);
}

.page-about .about-favtip p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--muted);
}

.page-about .about-support {
  display: grid;
  gap: 1.75rem;
}

.page-about .about-support__lead {
  margin: 0 0 1.5rem;
  color: var(--muted);
  line-height: 1.75;
}

.page-about .about-contact-list {
  margin: 0 0 1.5rem;
  padding: 0;
}

.page-about .about-contact-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--line);
}

.page-about .about-contact-item dt {
  font-size: 0.8125rem;
  color: var(--muted);
}

.page-about .about-contact-item dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--ink);
  word-break: break-all;
}

.page-about .about-session-item {
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
  background: rgba(255, 215, 0, 0.08);
  border-left: 3px solid var(--yellow);
}

.page-about .about-session-item__badge {
  display: inline-block;
  padding: 0.1875rem 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--yellow);
  border: 1px solid rgba(255, 215, 0, 0.4);
}

.page-about .about-session-item p {
  margin: 0.625rem 0 0;
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--muted);
}

.page-about .about-support__figure {
  margin: 0;
}

.page-about .about-support__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  background: linear-gradient(135deg, var(--bg-ocean), var(--bg-deep));
  border: 1px solid var(--line);
}

@media (min-width: 640px) {
  .page-about .about-hero {
    padding: 3rem 2rem 3.5rem;
  }

  .page-about .about-layout {
    padding: 0 2rem;
  }

  .page-about .about-rail {
    padding: 2rem 0 0;
  }

  .page-about .about-section {
    padding: 3.5rem 2rem 4rem;
  }

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

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

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

@media (min-width: 1024px) {
  .page-about .about-layout {
    display: grid;
    grid-template-columns: var(--about-rail-width) minmax(0, 1fr);
    gap: 2.5rem;
    align-items: start;
    padding: 0 1.5rem;
  }

  .page-about .about-rail {
    position: sticky;
    top: 20px;
    align-self: start;
    max-height: calc(100vh - 44px);
    overflow-y: auto;
    padding-top: 2.5rem;
  }

  .page-about .about-content {
    border-left: 1px solid var(--line);
  }

  .page-about .about-section {
    padding-left: 2.75rem;
  }

  .page-about .about-mission {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    align-items: start;
  }

  .page-about .about-mission__figure {
    justify-self: end;
    max-width: 420px;
  }

  .page-about .about-support {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
  }

  .page-about .about-support__figure {
    max-width: 400px;
    justify-self: start;
  }

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