.about-section {
  position: relative;

  overflow: clip;

  background:
    radial-gradient(
      circle at 82% 48%,
      rgb(159 232 194 / 6%),
      transparent 32rem
    ),
    var(--color-background);
}

.about-section::before {
  position: absolute;
  inset: 0;

  content: "";

  background-image:
    linear-gradient(rgb(255 255 255 / 2%) 1px, transparent 1px),
    linear-gradient(90deg, rgb(255 255 255 / 2%) 1px, transparent 1px);

  background-size: 4rem 4rem;

  -webkit-mask-image: linear-gradient(
    to bottom,
    transparent,
    black 20%,
    black 80%,
    transparent
  );

  mask-image: linear-gradient(
    to bottom,
    transparent,
    black 20%,
    black 80%,
    transparent
  );

  pointer-events: none;
}

.about-section__inner {
  position: relative;
  z-index: 1;

  display: grid;

  gap: clamp(var(--space-7), 8vw, var(--space-10));
}

.about-section__header {
  display: grid;
  gap: var(--space-4);
}

.about-section__layout {
  display: grid;

  grid-template-columns:
    minmax(0, 1.1fr)
    minmax(18rem, 0.9fr);

  align-items: center;

  gap: clamp(var(--space-7), 8vw, var(--space-10));
}

.about-section__copy {
  display: grid;
  gap: var(--space-7);

  min-width: 0;
}

.about-section__lede {
  max-width: 16ch;

  color: var(--color-text-primary);

  font-size: clamp(2rem, 4.5vw, 4.5rem);

  font-weight: var(--font-weight-medium);
  line-height: 1.02;
  letter-spacing: -0.055em;
}

.about-section__body {
  display: grid;
  gap: var(--space-4);

  max-width: 42rem;
}

.about-section__body p {
  color: var(--color-text-secondary);

  font-size: clamp(var(--font-size-base), 1.5vw, var(--font-size-lg));

  line-height: var(--line-height-relaxed);
}

.about-section__links {
  display: flex;
  flex-wrap: wrap;

  gap: var(--space-3);
}

.about-section__links a {
  display: inline-flex;
  align-items: center;

  gap: var(--space-2);

  padding: var(--space-3) var(--space-4);

  color: var(--color-text-primary);
  background-color: var(--color-surface);

  border: var(--border-width) solid var(--color-border);

  border-radius: var(--radius-pill);

  font-family: var(--font-family-mono);
  font-size: var(--font-size-xs);
  text-decoration: none;

  transition:
    color var(--duration-fast) var(--ease-standard),
    background-color var(--duration-fast) var(--ease-standard),
    border-color var(--duration-fast) var(--ease-standard),
    transform var(--duration-fast) var(--ease-out);
}

.about-section__links a:hover {
  color: var(--color-accent);
  background-color: var(--color-surface-hover);

  border-color: var(--color-border-strong);

  transform: translateY(-1px);
}

.about-section__facts {
  display: grid;

  grid-template-columns: repeat(3, minmax(0, 1fr));

  gap: var(--space-5);

  margin: 0;
  padding-top: var(--space-5);

  border-top: var(--border-width) solid var(--color-border);
}

.about-section__fact {
  display: grid;
  align-content: start;

  gap: var(--space-2);

  min-width: 0;
}

.about-section__fact dt {
  color: var(--color-text-muted);

  font-family: var(--font-family-mono);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.about-section__fact dd {
  margin: 0;

  color: var(--color-text-primary);

  font-size: var(--font-size-sm);
  line-height: var(--line-height-normal);
}

.about-portrait {
  display: grid;
  gap: var(--space-3);

  width: min(100%, 32rem);

  min-width: 0;

  margin: 0;
  margin-inline: auto;
}

.about-portrait__frame {
  position: relative;
  isolation: isolate;

  aspect-ratio: 4 / 5;

  overflow: hidden;

  background-color: var(--glass-background-fallback);

  border: var(--border-width) solid var(--glass-border);

  border-radius: var(--radius-xl);

  box-shadow: var(--shadow-panel);
}

@supports (backdrop-filter: blur(1px)) {
  .about-portrait__frame {
    background-color: var(--glass-background);

    backdrop-filter: blur(var(--glass-blur));
  }
}

.about-portrait__frame::before {
  position: absolute;
  inset: 0;
  z-index: -2;

  content: "";

  background:
    radial-gradient(circle at 50% 42%, rgb(159 232 194 / 15%), transparent 46%),
    linear-gradient(145deg, rgb(255 255 255 / 5%), transparent 40%);
}

.about-portrait__frame::after {
  position: absolute;
  inset: 0;
  z-index: 3;

  content: "";

  background: repeating-linear-gradient(
    to bottom,
    transparent 0,
    transparent 3px,
    rgb(255 255 255 / 2%) 4px
  );

  pointer-events: none;
}

.about-portrait__status {
  position: absolute;

  inset: var(--space-4) var(--space-4) auto;

  z-index: 4;

  display: flex;
  justify-content: space-between;

  gap: var(--space-4);

  color: var(--color-text-muted);

  font-family: var(--font-family-mono);
  font-size: var(--font-size-xs);
  letter-spacing: 0.08em;

  pointer-events: none;
}

.about-portrait__status span:last-child {
  color: var(--color-accent);
}

.about-portrait__source,
.about-portrait__placeholder,
.about-portrait__canvas {
  position: absolute;
  inset: 0;
}

.about-portrait__source {
  z-index: 1;

  display: block;

  width: 100%;
  height: 100%;

  object-fit: cover;
  object-position: 50% 42%;

  filter: grayscale(1) contrast(1.08) brightness(0.88);

  opacity: 1;

  transition:
    opacity var(--duration-slow) var(--ease-standard),
    filter var(--duration-slow) var(--ease-standard);
}

.about-portrait__placeholder {
  z-index: 2;

  display: grid;
  place-items: center;

  margin: 0;

  padding: clamp(var(--space-4), 5vw, var(--space-7));

  overflow: hidden;

  color: var(--color-accent);

  font-family: var(--font-family-mono);

  font-size: clamp(0.5rem, 1vw, 0.8rem);

  font-weight: var(--font-weight-medium);
  line-height: 1.2;
  text-align: center;

  white-space: pre;

  opacity: 0;

  transition: opacity var(--duration-normal) var(--ease-standard);

  pointer-events: none;
  user-select: none;
}

.about-portrait__canvas {
  z-index: 2;

  display: block;

  width: 100%;
  height: 100%;

  color: var(--color-accent);

  font-family: var(--font-family-mono);

  font-size: clamp(0.5rem, 1vw, 0.75rem);

  opacity: 0;

  transition: opacity var(--duration-slow) var(--ease-standard);

  pointer-events: none;
}

.about-portrait__frame[data-portrait-state="loading"] .about-portrait__source {
  opacity: 0;
}

.about-portrait__frame[data-portrait-state="loading"]
  .about-portrait__placeholder {
  opacity: 0.64;
}

.about-portrait__frame[data-portrait-state="ready"] .about-portrait__source {
  opacity: 0;
}

.about-portrait__frame[data-portrait-state="ready"]
  .about-portrait__placeholder {
  opacity: 0;
}

.about-portrait__frame[data-portrait-state="ready"] .about-portrait__canvas {
  opacity: 1;
}

.about-portrait__frame[data-portrait-state="error"] .about-portrait__source {
  opacity: 0;
}

.about-portrait__frame[data-portrait-state="error"]
  .about-portrait__placeholder {
  opacity: 0.64;
}

.about-portrait__frame[data-portrait-state="error"] .about-portrait__canvas {
  opacity: 0;
}

.about-portrait__caption {
  display: flex;
  justify-content: space-between;

  gap: var(--space-4);

  color: var(--color-text-muted);

  font-family: var(--font-family-mono);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

@media (max-width: 56rem) {
  .about-section__layout {
    grid-template-columns: 1fr;
  }

  .about-section__lede {
    max-width: 18ch;
  }

  .about-portrait {
    width: min(100%, 36rem);
  }
}

@media (max-width: 40rem) {
  .about-section__facts {
    grid-template-columns: 1fr;
  }

  .about-section__fact {
    grid-template-columns:
      minmax(6rem, 0.35fr)
      minmax(0, 1fr);

    align-items: baseline;
  }

  .about-portrait__status {
    inset: var(--space-3) var(--space-3) auto;
  }

  .about-portrait__caption {
    flex-direction: column;
    gap: var(--space-1);
  }
}

@media (prefers-reduced-motion: reduce) {
  .about-section__links a,
  .about-portrait__source,
  .about-portrait__placeholder,
  .about-portrait__canvas {
    transition-duration: 1ms;
  }
}

.about-portrait__source--secondary {
  visibility: hidden;
  opacity: 0;
}

.about-portrait__frame[data-portrait-state="transitioning"]
  .about-portrait__source {
  opacity: 0;
}

.about-portrait__frame[data-portrait-state="transitioning"]
  .about-portrait__placeholder {
  opacity: 0;
}

.about-portrait__frame[data-portrait-state="transitioning"]
  .about-portrait__canvas {
  opacity: 1;
}

.about-portrait__canvas {
  will-change: opacity;
}