.about-hero {
  display: flex;
  gap: 2.5rem;
  align-items: flex-start;
  margin-bottom: 2rem;
}

.about-avatar {
  width: clamp(10rem, 28vw, 15.556rem);
  flex-shrink: 0;
  animation: float 4s ease-in-out infinite;
  filter: var(--logo-filter);
}

.about-intro {
  flex: 1;
}

.page-title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  margin-bottom: 1rem;
}

.about-bio {
  font-size: 1.1rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 0.75rem;
}

.about-links {
  display: flex;
  gap: 1.5rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
}

.about-link {
  font-size: 1.1rem;
  color: var(--text);
  border-bottom: 2px solid var(--text-muted);
  padding-bottom: 2px;
  transition: border-color 0.2s;
}

.about-link:hover {
  border-color: var(--text);
  text-decoration: none;
}

.section-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.stack-content {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
}

.stack-categories {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.stack-category-title {
  font-size: 1.1rem;
  font-weight: bold;
  color: var(--text);
  margin-top: 0.8rem;
}

.stack-category-title:first-of-type {
  margin-top: 0;
}

.stack-category-items {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.stack-duck {
  width: clamp(7.778rem, 20vw, 12.222rem);
  height: auto;
  flex-shrink: 0;
  filter: var(--logo-filter);
  transform-origin: bottom center;
  animation: swing 3s ease-in-out infinite;
}

@keyframes swing {
  0%   { transform: rotate(-12deg); }
  50%  { transform: rotate(12deg); }
  100% { transform: rotate(-12deg); }
}

.stack-list li {
  font-size: 1rem;
  color: var(--text-muted);
  padding-left: 1rem;
  position: relative;
}

.stack-list li::before {
  content: '\2014';
  position: absolute;
  left: -0.5rem;
  color: var(--text-muted);
}

@media (max-width: 700px) {
  .about-hero {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .about-avatar {
    order: 2;
  }

  .about-intro {
    order: 1;
  }

  .about-links {
    justify-content: center;
  }

  .stack-content {
    flex-direction: column;
    align-items: center;
  }

  .stack-duck {
    width: 8.889rem;
  }
}