.about-trigger {
  margin-top: 0.9rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow:
    0 10px 24px rgba(0, 0, 0, 0.18),
    0 0 20px rgba(120, 155, 220, 0.12),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
  color: rgba(var(--color-heading), 0.96);
  cursor: pointer;
  pointer-events: auto;
  transition: background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
}

.about-trigger:hover,
.about-trigger:focus-visible {
  background: rgba(255, 255, 255, 0.18);
  border-color: rgba(255, 255, 255, 0.28);
  box-shadow:
    0 14px 34px rgba(0, 0, 0, 0.22),
    0 0 26px rgba(132, 168, 232, 0.18),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.about-trigger:focus-visible,
.about-close:focus-visible {
  outline: 2px solid var(--kesson-focus-ring);
  outline-offset: 2px;
}

.about-trigger__letter {
  font-family: var(--kesson-font-serif-ui);
  font-size: 1.2rem;
  font-style: italic;
  line-height: 1;
  text-shadow: 0 0 10px rgba(180, 208, 255, 0.25);
  transform: translateY(-1px);
}

#about-overlay {
  position: fixed;
  inset: 0;
  z-index: 72;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(5, 10, 20, 0);
  transition: background 0.35s ease;
}

#about-overlay.visible {
  display: flex;
}

#about-overlay.open {
  background: rgba(5, 10, 20, 0.58);
}

.about-glass {
  position: relative;
  z-index: 1;
  width: min(92vw, 640px);
  max-height: min(78vh, 760px);
  overflow-y: auto;
  padding: 2.9rem 2rem 2rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  background:
    linear-gradient(180deg, rgba(18, 24, 37, 0.82) 0%, rgba(10, 14, 24, 0.92) 100%);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow:
    0 24px 60px rgba(0, 0, 0, 0.42),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
  opacity: 0;
  transform: translateY(20px) scale(0.96);
  transition: opacity 0.35s ease, transform 0.35s ease;
}

#about-overlay.open .about-glass {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.about-close {
  position: absolute;
  top: 0.9rem;
  right: 0.95rem;
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  color: rgba(var(--color-highlight), 0.84);
  font-size: 1.2rem;
  line-height: 1;
  cursor: pointer;
  transition: background 0.25s ease, color 0.25s ease;
}

.about-close:hover {
  background: rgba(255, 255, 255, 0.1);
  color: rgba(var(--color-heading), 1);
}

.about-body {
  font-family: var(--kesson-font-serif-display);
  color: rgba(var(--color-highlight), 0.86);
  font-size: 0.93rem;
  line-height: 1.95;
  letter-spacing: 0.02em;
}

.about-body h1,
.about-body h2 {
  color: rgba(var(--color-heading), 0.94);
  font-family: var(--kesson-font-serif-display);
  font-weight: 400;
  letter-spacing: 0.08em;
}

.about-body h1 {
  margin: 0 0 1.25rem;
  font-size: 1.15rem;
}

.about-body h2 {
  margin: 1.8rem 0 0.75rem;
  font-size: 0.88rem;
}

.about-body p,
.about-body ul {
  margin: 0 0 1rem;
}

.about-body ul {
  padding-left: 1.2rem;
}

.about-body li + li {
  margin-top: 0.35rem;
}

.about-body a {
  color: rgba(var(--color-link), 0.92);
  text-decoration-color: rgba(var(--color-link), 0.36);
}

.about-body a:hover,
.about-body a:focus-visible {
  color: rgba(180, 210, 255, 1);
}

.about-body strong {
  color: rgba(var(--color-heading), 0.96);
  font-weight: 500;
}

.about-body hr {
  margin: 1.25rem 0;
  border: 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.about-status {
  margin: 0;
  color: rgba(var(--color-highlight), 0.72);
}

.about-status--error {
  color: rgba(255, 202, 202, 0.9);
}

.about-glass::-webkit-scrollbar {
  width: 6px;
}

.about-glass::-webkit-scrollbar-thumb {
  background: rgba(150, 180, 230, 0.2);
  border-radius: 999px;
}

@media (prefers-reduced-motion: reduce) {
  #about-overlay,
  .about-glass,
  .about-trigger {
    transition: none;
  }
}

@media (max-width: 767.98px) {
  .about-glass {
    width: min(94vw, 640px);
    max-height: min(82vh, 760px);
    padding: 2.6rem 1.35rem 1.5rem;
    border-radius: 10px;
  }

  .about-body {
    font-size: 0.88rem;
    line-height: 1.85;
  }
}