.about-page {
  min-height: calc(100vh - 78px);
  display: grid;
  place-items: center;
  padding: 5.5rem 0 4rem;
}

.about-centered {
  display: grid;
  justify-items: center;
  text-align: center;
  gap: 1rem;
  max-width: 760px;
}

.about-avatar {
  width: 112px;
  height: 112px;
  border-radius: 20px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, #ffffff 0%, #f7f7fa 100%);
  image-rendering: pixelated;
}

.about-title {
  margin: 0;
  font-size: clamp(2.4rem, 7vw, 4.2rem);
  letter-spacing: -0.03em;
}

.about-intro {
  margin: 0;
  max-width: 52ch;
  color: var(--muted);
  line-height: 1.7;
  font-size: 1.02rem;
}

.about-title.is-typing::after {
  content: "";
  display: inline-block;
  width: 0.08em;
  height: 0.92em;
  margin-left: 0.12em;
  vertical-align: -0.06em;
  background: var(--text);
  animation: blink-caret 850ms steps(1, end) infinite;
}

.about-intro.is-typing::after {
  content: "";
  display: inline-block;
  width: 0.08em;
  height: 0.92em;
  margin-left: 0.12em;
  vertical-align: -0.06em;
  background: var(--text);
  animation: blink-caret 850ms steps(1, end) infinite;
}

.about-block {
  margin-top: 1.2rem;
  width: min(640px, 100%);
}

.about-block h2 {
  margin: 0 0 0.65rem;
  font-size: 1.2rem;
  letter-spacing: -0.01em;
}

.about-list {
  display: grid;
  gap: 0.35rem;
}

.about-link-item {
  border: 0;
  background: transparent;
  color: var(--text);
  font: inherit;
  font-size: 1rem;
  line-height: 1.55;
  padding: 0.2rem 0;
  cursor: pointer;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
  text-decoration-color: transparent;
  transition: text-decoration-color 180ms ease;
}

.about-link-item:hover {
  text-decoration-color: currentColor;
}

.about-social {
  margin-top: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.95rem;
}

.about-social a,
.about-wechat-btn {
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 999px;
  display: grid;
  place-items: center;
  color: var(--text);
  background: color-mix(in srgb, var(--surface) 95%, #fff 5%);
  transition: border-color 180ms ease, transform 180ms ease;
}

.about-social a:hover,
.about-wechat-btn:hover {
  border-color: #c8d3ff;
  transform: translateY(-1px);
}

.about-social svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.about-wechat-btn {
  cursor: pointer;
}

.about-modal {
  position: fixed;
  inset: 0;
  z-index: 60;
  opacity: 0;
  pointer-events: none;
  transition: opacity 200ms ease;
}

.about-modal.is-open {
  opacity: 1;
  pointer-events: auto;
}

.about-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(10, 11, 15, 0.36);
  backdrop-filter: blur(4px);
}

.about-modal-card {
  position: relative;
  width: min(560px, 90vw);
  margin: 12vh auto 0;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #ffffff;
  padding: 1.35rem 1.3rem 1.25rem;
  transform: scale(0.95);
  transition: transform 200ms ease;
}

.about-modal.is-open .about-modal-card {
  transform: scale(1);
}

.about-modal-close {
  position: absolute;
  top: 0.65rem;
  right: 0.65rem;
  border: 0;
  background: transparent;
  color: #666b77;
  font-size: 1.35rem;
  line-height: 1;
  cursor: pointer;
}

.about-modal-role {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.7rem;
  color: #7d8190;
  font-weight: 700;
}

.about-modal-card h3 {
  margin: 0.45rem 0 0.4rem;
  font-size: 1.35rem;
  letter-spacing: -0.01em;
}

.about-modal-meta {
  margin: 0;
  color: #535865;
  font-size: 0.9rem;
  font-weight: 600;
}

.about-modal-desc {
  margin: 0.8rem 0 0;
  color: #4f5563;
  line-height: 1.65;
}

.about-modal-image {
  display: none;
  width: min(300px, 100%);
  border-radius: 12px;
  border: 1px solid var(--line);
  margin: 0.85rem auto 0;
}

.about-modal-image.is-visible {
  display: block;
}

.about-modal-open {
  overflow: hidden;
}

@media (max-width: 640px) {
  .about-page {
    min-height: calc(100vh - 72px);
    padding-top: 5rem;
  }

  .about-centered {
    gap: 0.85rem;
  }

  .about-link-item {
    font-size: 0.96rem;
  }

  .about-modal-card {
    width: 90vw;
    margin-top: 10vh;
  }
}