:root {
  --about-max-width: 640px;
  --about-gap: 3.5rem;
  --about-transition: cubic-bezier(0.22, 1, 0.36, 1);
}

.page-about .post-wrapper {
  max-width: var(--about-max-width);
}

.page-about .post-content {
  width: 100%;
}

.page-about .meta-comment {
  display: none;
}

/* ===== Base ===== */
.about-content {
  color: var(--text-color);
  font-family: inherit;
  line-height: 1.75;
  padding-top: 0.5rem;
  padding-bottom: 2rem;
}

.about-content a {
  color: var(--themecolor);
  text-decoration: none;
  border-bottom: none;
  transition: color 0.2s ease;
}

.about-content a:hover {
  color: var(--themehovercolor);
}

.about-content p {
  margin: 0 0 1.25em;
}

.about-content h2,
.about-content h3 {
  position: relative;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0 0 0.6em;
}

.about-content h2::before,
.about-content h3::before {
  display: none;
}

/* ===== Section ===== */
.about-section {
  margin: var(--about-gap) 0;
}

.about-section:first-child {
  margin-top: 0;
}

.about-label {
  display: block;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text2-color);
  margin-bottom: 1.25rem;
  opacity: 0.7;
}

/* ===== Hero ===== */
.about-hero {
  margin: 0 0 var(--about-gap);
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border-color);
}

.about-hero h2 {
  font-size: clamp(2.5rem, 7vw, 4rem);
  line-height: 1;
  letter-spacing: -0.04em;
  font-weight: 800;
  margin: 0 0 0.3em;
  color: var(--text-color);
}

.about-hero p {
  font-size: 1.1rem;
  color: var(--text2-color);
  max-width: 42ch;
  line-height: 1.6;
  margin: 0;
}

/* ===== Status line ===== */
.about-status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--text2-color);
  margin-top: 1.25rem;
}

.about-status-dot {
  display: none;
}

/* ===== Award ===== */
.about-award {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.about-award-name {
  font-size: 1rem;
  font-weight: 400;
  color: var(--text2-color);
}

.about-award-level {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-color);
  letter-spacing: -0.02em;
}

/* ===== LeetCode ===== */
.about-leetcode-number {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, "Cascadia Code", monospace;
  font-size: clamp(2.75rem, 7vw, 4rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--text-color);
  margin: 0 0 0.2em;
}

.about-leetcode-label {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text2-color);
  opacity: 0.7;
}

/* ===== Stack ===== */
.about-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.about-stack-item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--border-color);
  border-radius: 999px;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.about-stack-item:hover {
  border-color: var(--themecolor);
}

.about-stack-item img {
  width: 16px;
  height: 16px;
  filter: grayscale(0%);
  opacity: 0.85;
}

.about-stack-item span {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-color);
}

/* ===== Contact ===== */
.about-contact {
  display: flex;
  flex-direction: column;
}

.about-contact-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border-color);
}

.about-contact-row:first-child {
  padding-top: 0;
}

.about-contact-row:last-child {
  border-bottom: none;
}

.about-contact-label {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text2-color);
  opacity: 0.7;
  flex-shrink: 0;
}

.about-contact-value,
.about-contact-row a {
  font-size: 0.95rem;
  font-weight: 400;
  color: var(--text-color);
  text-decoration: none;
  border-bottom: none;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, monospace;
  transition: color 0.2s ease;
}

.about-contact-row a:hover {
  color: var(--themecolor);
}

/* ===== Like ===== */
.about-like {
  text-align: right;
  margin-top: 1rem;
}

.about-like-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.4rem;
  border: 1px solid var(--border-color);
  border-radius: 999px;
  background: transparent;
  color: var(--text2-color);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.about-like-btn:hover {
  color: #ef4444;
  border-color: color-mix(in srgb, #ef4444 50%, var(--border-color));
}

.about-like-btn.liked {
  color: #ef4444;
  border-color: color-mix(in srgb, #ef4444 40%, var(--border-color));
}

.about-like-btn.liked .about-heart {
  animation: aboutHeartPop 0.4s var(--about-transition);
}

.about-heart {
  font-size: 1rem;
}

@keyframes aboutHeartPop {
  0% { transform: scale(1); }
  50% { transform: scale(1.4); }
  100% { transform: scale(1); }
}

/* ===== Floating hearts ===== */
.floating-heart {
  position: fixed;
  pointer-events: none;
  z-index: 9999;
  color: #ef4444;
  font-size: 1.1rem;
  line-height: 1;
  opacity: 1;
  transform: translateY(0) scale(1);
  transition: transform 1s ease-out, opacity 1s ease-out;
}

.floating-heart.float-up {
  transform: translateY(-80px) scale(1.2);
  opacity: 0;
}

/* ===== Scroll reveal ===== */
.about-reveal {
  opacity: 1;
  transform: none;
  transition: opacity 0.5s var(--about-transition), transform 0.5s var(--about-transition);
}
.about-reveal.about-reveal-hidden {
  opacity: 0;
  transform: translateY(14px);
}
.about-reveal.about-reveal-hidden.about-reveal-prepare {
  transition: none !important;
}
.about-reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Reduced motion ===== */
@media (prefers-reduced-motion: reduce) {
  .about-reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .about-stack-item,
  .about-like-btn {
    transition: none;
  }
}

/* ===== Mobile ===== */
@media (max-width: 640px) {
  :root {
    --about-gap: 2.5rem;
  }

  .about-hero h2 {
    font-size: clamp(2rem, 10vw, 2.75rem);
  }

  .about-contact-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.2rem;
  }

  .about-like {
    text-align: center;
  }
}