.readingProgress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent) 0%, #fbbf24 100%);
  z-index: 100;
  transition: width 0.15s linear;
  border-radius: 0 3px 3px 0;
}

.backToTop {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 48px;
  height: 48px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  cursor: pointer;
  z-index: 50;
  color: var(--accent);
  transition: transform 0.2s, box-shadow 0.2s;
}

.backToTop:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.tocButton {
  position: fixed;
  bottom: 24px;
  right: 84px;
  width: 48px;
  height: 48px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  cursor: pointer;
  z-index: 50;
  color: var(--accent);
  transition: transform 0.2s, box-shadow 0.2s;
}

.tocButton:hover {
  transform: translateY(-2px);
}

.drawerMask {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 140;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.drawerMaskOpen {
  opacity: 1;
  pointer-events: auto;
}

.drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 280px;
  max-width: 85vw;
  background: var(--background);
  border-left: 1px solid var(--border);
  box-shadow: -4px 0 24px rgba(0, 0, 0, 0.15);
  z-index: 150;
  padding: 80px 0 24px;
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform 0.3s ease;
}

.drawerOpen {
  transform: translateX(0);
}

.drawerTitle {
  padding: 0 20px 12px;
  font-size: 14px;
  font-weight: 600;
  color: var(--muted-foreground);
  border-bottom: 1px solid var(--border);
  margin-bottom: 8px;
}

.drawerItem {
  padding: 10px 20px;
  font-size: 14px;
  color: var(--foreground);
  cursor: pointer;
  transition: background 0.15s;
}

.drawerItem:hover {
  background: var(--muted);
}

.drawerItemH2 {
  padding-left: 28px;
  font-size: 13px;
  color: var(--muted-foreground);
}

.markdownBody {
  font-size: 16px;
  line-height: 1.85;
  color: var(--foreground);
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.markdownBody h1 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--foreground);
  margin: 28px 0 12px;
  padding-bottom: 0;
  border-bottom: none;
  line-height: 1.3;
}

.markdownBody h1:first-child {
  margin-top: 0;
}

.markdownBody h1::after {
  content: "";
  display: block;
  width: 40px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), #fbbf24);
  border-radius: 3px;
  margin-top: 8px;
}

.markdownBody h2 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--foreground);
  margin: 24px 0 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
  line-height: 1.35;
}

.markdownBody h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--foreground);
  margin: 20px 0 8px;
}

.markdownBody h4,
.markdownBody h5,
.markdownBody h6 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--foreground);
  margin: 16px 0 6px;
}

.markdownBody p {
  font-size: 1rem;
  margin-bottom: 14px;
  line-height: 1.9;
}

.markdownBody blockquote {
  position: relative;
  margin: 24px 0;
  padding: 16px 20px 16px 24px;
  border-left: none;
  background: var(--muted);
  border-radius: 0 12px 12px 0;
  color: var(--muted-foreground);
}

.markdownBody blockquote::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--accent);
  border-radius: 0 2px 2px 0;
}

.markdownBody pre.codeBlock {
  margin: 24px 0;
  padding: 0;
  overflow-x: auto;
  border-radius: 8px;
  background: #282c34;
}

.markdownBody pre.codeBlock code {
  display: block;
  padding: 16px;
  font-size: 0.875em;
  line-height: 1.6;
  color: #abb2bf;
}


.markdownBody p code,
.markdownBody li code {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.9em;
  padding: 0.2em 0.4em;
  background: var(--muted);
  color: var(--foreground);
  border-radius: 6px;
}

.markdownBody a {
  color: var(--accent);
  text-decoration: none;
}

.markdownBody a:hover {
  text-decoration: underline;
  text-underline-offset: 2px;
}

.markdownBody img {
  display: block;
  margin: 28px auto;
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.markdownBody ul,
.markdownBody ol {
  margin: 16px 0;
  padding-left: 28px;
}

.markdownBody li {
  margin-bottom: 6px;
}

.markdownBody table {
  width: 100%;
  margin: 24px 0;
  border-collapse: collapse;
  border-radius: 8px;
  overflow: hidden;
}

.markdownBody th {
  background: var(--muted);
  font-weight: 600;
  padding: 12px 16px;
  text-align: left;
  border: 1px solid var(--border);
}

.markdownBody td {
  padding: 12px 16px;
  border: 1px solid var(--border);
}

.markdownBody tr:nth-child(even) {
  background: var(--muted);
}

.markdownBody hr {
  border: none;
  height: 1px;
  background: var(--border);
  margin: 28px 0;
}

.markdownBody strong {
  font-weight: 700;
}

.markdownBody input[type="checkbox"] {
  margin-right: 8px;
}

@media (min-width: 768px) {
  .markdownBody {
    font-size: 17px;
    line-height: 1.8;
  }

  .markdownBody h1 {
    font-size: 1.75rem;
    margin: 32px 0 14px;
  }

  .markdownBody h2 {
    font-size: 1.35rem;
    margin: 28px 0 12px;
  }

  .markdownBody h3 {
    font-size: 1.2rem;
    margin: 24px 0 10px;
  }

  .backToTop,
  .tocButton {
    bottom: 32px;
    right: 32px;
  }

  .tocButton {
    right: 92px;
  }
}