/* Theme tokens (light mode defaults) */
:root {
  --bg: #ece6d8;
  --panel: #f6f1e5;
  --text: #2f2a22;
  --muted: #766b59;
  --line: #cdc1ad;
  --accent: #7d6c4e;
  --title-hover: #65583f;
  --bg-gradient: radial-gradient(circle at top left, #faf6ed 0%, #e8decd 58%, #d6c9b3 100%);
  --card-shadow: 0 12px 24px rgba(49, 40, 28, 0.12);
  --soft-shadow: 0 4px 12px rgba(49, 40, 28, 0.09);
  --page-bg-opacity: 0.24;
  --page-bg-brightness: 1.04;
  --callout-note: #6b7a99;
  --callout-tip: #5f8a6d;
  --callout-warning: #b07a3a;
  --callout-caution: #b0584f;
  --callout-important: #7a6a9a;
  --base-font-weight: 375;
}
/* Theme tokens (dark mode overrides) */
[data-theme="dark"] {
  --bg: #10161f;
  --panel: #18212d;
  --text: #e7ebf3;
  --muted: #9ba8bd;
  --line: #33465f;
  --accent: #7ea8df;
  --title-hover: #a6c3ea;
  --bg-gradient: radial-gradient(circle at top left, #243346 0%, #172230 58%, #10161f 100%);
  --card-shadow: 0 14px 26px rgba(3, 7, 12, 0.5);
  --soft-shadow: 0 6px 14px rgba(3, 7, 12, 0.38);
  --page-bg-opacity: 0.14;
  --page-bg-brightness: 0.74;
  --callout-note: #8fa7cf;
  --callout-tip: #7eb692;
  --callout-warning: #e0a869;
  --callout-caution: #e08a82;
  --callout-important: #b49ad9;
  --base-font-weight: 350;
}
/* Global reset and base document styles */
* {
  box-sizing: border-box;
}
html {
  background: var(--bg-gradient);
  background-color: var(--bg);
  min-height: 100%;
}
@font-face {
  font-family: "Newsreader";
  src: url("../../public/fonts/newsreader.woff2") format("woff2");
  font-weight: 300 800;
  font-style: normal;
}
@font-face {
  font-family: "Newsreader";
  src: url("../../public/fonts/newsreader-italic.woff2") format("woff2");
  font-weight: 300 800;
  font-style: italic;
}
@font-face {
  font-family: "Ancizar Serif";
  src: url("../../public/fonts/ancizar-serif.woff2") format("woff2");
  font-weight: 300 800;
  font-style: normal;
}
@font-face {
  font-family: "Noto Serif SC";
  src: url("../../public/fonts/noto-serif-sc.woff2") format("woff2");
  font-weight: 300 800;
  font-style: normal;
}
@font-face {
  font-family: "Noto Serif SC Adjusted";
  src: url("../../public/fonts/noto-serif-sc.woff2") format("woff2");
  font-weight: 300 800;
  font-style: normal;
  size-adjust: 95%;
}
@font-face {
  font-family: "Computer Modern Typewriter";
  src: url("../../public/fonts/computer-modern-typewriter.woff2") format("woff2");
  font-weight: normal;
  font-style: normal;
}

body {
  margin: 0;
  font-family: "Ancizar Serif", "Noto Serif SC Adjusted", "Noto Serif SC", serif;
  font-optical-sizing: none;
  font-weight: var(--base-font-weight);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
body::before {
  opacity: 0;
}
/* Optional per-page background image layer */
body.with-page-bg::after {
  content: "";
  position: fixed;
  inset: 0;
  background-image: var(--page-bg-image);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: var(--page-bg-opacity);
  filter: brightness(var(--page-bg-brightness));
  pointer-events: none;
  z-index: 0;
}
body.with-page-bg > * {
  position: relative;
  z-index: 1;
}
/* Subtle decorative background glow */
body::before {
  content: "";
  position: fixed;
  inset: -120px -80px auto auto;
  width: 320px;
  height: 320px;
  border-radius: 999px;
  background: radial-gradient(circle, color-mix(in srgb, var(--accent) 16%, transparent) 0%, transparent 70%);
  pointer-events: none;
  z-index: -1;
}
code {
  font-family: "Computer Modern Typewriter", "Courier New", monospace;
}
/* Shared layout containers */
.site-header,
.site-footer,
.container {
  width: min(900px, 92vw);
  margin: 0 auto;
  transition: opacity 0.56s ease;
}
/* Header and brand */
.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 26px 0 20px;
  animation: page-fade-in 0.68s ease both;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.35rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--text);
  text-decoration: none;
  transition: transform 0.16s ease;
}
.brand:hover {
  transform: translateY(-1px);
}
.brand-mark-wrap {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--panel);
  display: inline-grid;
  place-items: center;
}
.brand-mark {
  width: 22px;
  height: 22px;
  display: block;
}
/* Top navigation and theme toggle */
nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  align-items: center;
  gap: 8px;
}
nav a {
  margin-left: 0;
  color: var(--muted);
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 3px 10px;
  transition: color 0.16s ease, border-color 0.16s ease, background 0.16s ease;
}
.theme-toggle {
  margin-left: 0;
  border: 1px solid var(--line);
  color: var(--text);
  background: transparent;
  border-radius: 999px;
  padding: 4px 11px;
  cursor: pointer;
  transition: transform 0.16s ease, background 0.16s ease;
  font-family: "Ancizar Serif", "Noto Serif SC Adjusted", "Noto Serif SC", serif;
}
nav a:hover,
a:hover {
  color: var(--accent);
}
nav a:hover {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--panel) 78%, var(--accent) 22%);
}
.theme-toggle:hover {
  transform: translateY(-1px);
  background: color-mix(in srgb, var(--panel) 85%, var(--accent) 15%);
}
/* Main content panel and hero */
.container {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 28px;
  margin-bottom: 24px;
  box-shadow: var(--card-shadow);
  flex: 1;
  animation: page-fade-in 0.68s ease both;
}
.hero h1 {
  margin: 0 0 8px;
  padding-bottom: 4px;
  border-bottom: 1px dashed var(--line);
  display: inline-block;
}
.hero {
  min-height: 132px;
  position: relative;
}
.hero .home-btn {
  position: absolute;
  right: 0;
  top: 0;
}
/* Generic metadata and author/tag inline styles */
.meta {
  color: var(--muted);
  font-size: 0.94rem;
}
.post-meta-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.meta-left {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  margin-top: -2px;
}
.meta-right {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: flex-end;
  margin-left: auto;
}
.post-meta .tag {
  margin: 0;
}
.post-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
}
.author-link {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px dashed color-mix(in srgb, var(--line) 58%, var(--accent) 42%);
  transition: color 0.16s ease, border-color 0.16s ease;
}
.author-link:hover {
  color: var(--accent);
  border-color: var(--accent);
}
.meta-sep {
  margin: 0 6px;
}
/* Post list card layout */
.post-list {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.section-title {
  margin: 10px 0 6px;
  text-align: center;
  font-size: 1.1rem;
  letter-spacing: 0.08em;
}
.section-more {
  text-align: center;
  margin: 12px 0 4px;
}
.more-link {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px dashed color-mix(in srgb, var(--line) 60%, var(--accent) 40%);
  padding-bottom: 2px;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.more-link:hover {
  color: var(--accent);
  border-color: var(--accent);
}
.post-list li {
  position: relative;
  display: flex;
  align-items: center;
  overflow: hidden;
  border-radius: 18px;
  padding: 18px;
  border: 1px solid color-mix(in srgb, var(--line) 75%, transparent);
  background: color-mix(in srgb, var(--panel) 98%, transparent);
  box-shadow: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  cursor: pointer;
  isolation: isolate;
  min-height: 220px;
}
@media (max-width: 760px) {
  .post-list li {
    padding: 18px 20px;
  }
}
.post-list li::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    120deg,
    color-mix(in srgb, var(--accent) 22%, transparent),
    transparent 42%,
    color-mix(in srgb, var(--accent) 18%, transparent)
  );
  opacity: 0;
  transition: opacity 0.2s ease;
  pointer-events: none;
  z-index: 0;
}
.post-list li:hover {
  transform: translateY(-2px);
  box-shadow: none;
  border-color: color-mix(in srgb, var(--line) 55%, transparent);
}
.post-list li:hover::after {
  opacity: 0;
}
.post-list li:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
.post-card__inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(220px, 34%) minmax(0, 1fr);
  gap: 18px;
  align-items: center;
  z-index: 1;
  width: 100%;
  height: 100%;
  flex: 1 1 auto;
}
@media (max-width: 900px) {
  .post-card__inner {
    grid-template-columns: 1fr;
    justify-items: stretch;
    text-align: left;
    gap: 14px;
  }
  .post-card-title,
  .post-excerpt {
    text-align: left;
  }
  .post-card .post-meta-row {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
  .post-card .meta-right {
    justify-content: flex-start;
    margin-left: 0;
    padding-left: 0;
  }
  .post-cover-wrap {
    width: 100%;
    max-width: 100%;
    aspect-ratio: 16 / 9;
    max-width: 520px;
    margin: 0 auto;
    box-shadow: none !important;
    background: transparent !important;
    border: none;
  }
  .post-cover {
    object-fit: cover;
    border: none;
  }
  .post-list li {
    padding: 16px 18px;
  }
  .post-main {
    gap: 8px;
    align-self: stretch;
  }
  .post-card .meta-right,
  .post-card .tag-list {
    flex-wrap: wrap;
    overflow: visible;
  }
  .post-card .meta-right {
    justify-content: flex-start;
  }
  .post-card .tag-list {
    justify-content: flex-start;
  }
}

@media (max-width: 600px) {
  .post-card__inner {
    justify-items: center;
    align-items: center;
    text-align: center;
  }
  .post-card .meta-left,
  .post-card .meta-right {
    display: none;
  }
  .post-card .post-meta-row {
    justify-content: center;
    align-items: center;
  }
  .post-main {
    width: 100%;
    align-items: center;
    text-align: center;
  }
  .post-cover-wrap {
    width: min(520px, 100%);
    margin: 0 auto;
    justify-self: center;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .post-cover {
    display: block;
    margin-left: auto;
    margin-right: auto;
    width: 100%;
  }
  .post-card-title,
  .post-excerpt {
    text-align: center !important;
    margin-left: auto;
    margin-right: auto;
  }
}
.post-list h3 {
  margin: 0;
}
.post-card-title {
  margin: 0;
  font-size: 1.58rem;
  font-weight: 600;
  line-height: 1.2;
  color: var(--text);
  overflow-wrap: anywhere;
  width: 100%;
  text-align: left;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 2.4em;
  padding: 2px 0;
}
.post-list li:hover .post-card-title {
  color: var(--title-hover);
}
.post-list p {
  margin: 0;
  overflow-wrap: anywhere;
}
.tag-cloud-section {
  margin-top: 28px;
  padding-top: 8px;
  text-align: center;
}
.tag-cloud-section h2 {
  margin: 0 0 14px;
  font-size: 1.1rem;
  letter-spacing: 0.04em;
}
.tag-cloud-shell {
  position: relative;
  max-width: 680px;
  margin: 0 auto;
  padding: 20px 26px;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--line) 70%, transparent);
  background:
    radial-gradient(circle at 35% 25%, rgba(255, 255, 255, 0.6), transparent 55%),
    radial-gradient(circle at 70% 60%, rgba(255, 255, 255, 0.28), transparent 60%),
    color-mix(in srgb, var(--panel) 97%, var(--accent) 3%);
  box-shadow: 0 18px 34px rgba(49, 40, 28, 0.12), inset 0 1px 0 rgba(255, 255, 255, 0.7);
  overflow: visible;
}
[data-theme="dark"] .tag-cloud-shell {
  border-color: color-mix(in srgb, var(--line) 60%, transparent);
  background:
    radial-gradient(circle at 35% 25%, rgba(255, 255, 255, 0.08), transparent 55%),
    radial-gradient(circle at 70% 60%, rgba(255, 255, 255, 0.04), transparent 60%),
    color-mix(in srgb, var(--panel) 98%, black 2%);
  box-shadow: 0 12px 22px rgba(3, 7, 12, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.08);
}
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  justify-content: center;
  align-items: center;
  padding: 6px 0;
}
.tag-cloud-item {
  --tag-weight: 0.5;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 2px 6px;
  border-radius: 999px;
  border: 0;
  background: transparent;
  color: var(--muted);
  text-decoration: none;
  font-size: calc(0.88rem + var(--tag-weight) * 1.1rem);
  letter-spacing: 0.015em;
  font-weight: 500;
  transition: transform 0.22s ease, color 0.22s ease;
  box-shadow: none;
}
.tag-cloud-item:visited,
.tag-cloud-item:active {
  color: var(--text);
  text-decoration: none;
}
.tag-cloud-item:hover {
  transform: translateY(-2px) scale(1.08);
  color: var(--title-hover);
  text-decoration: none;
}
.tag-cloud-item:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.tag-cloud-item span {
  display: inline-block;
  padding: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
}

@media (max-width: 600px) {
  .tag-cloud-shell {
    padding: 28px 32px;
    border-radius: 32px;
  }
  .tag-cloud {
    gap: 12px 18px;
    padding: 10px 0;
  }
  .tag-cloud-item {
    padding: 6px 10px;
  }
  .tag-cloud-item span {
    padding: 2px 4px;
  }
}
/* Post cover and content areas */
.post-cover {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 14px;
  border: 1px solid color-mix(in srgb, var(--line) 82%, transparent);
  margin: 0;
  box-shadow: none;
  transition: transform 0.25s ease;
}
.post-cover-wrap {
  position: relative;
  width: 100%;
  max-width: 100%;
  justify-self: center;
  margin: 0 auto;
  align-self: center;
  aspect-ratio: 16 / 10;
  border-radius: 14px;
  overflow: hidden;
  background: transparent;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.3);
}
.post-list li:hover .post-cover {
  transform: scale(1.02);
}
.post-main {
  min-width: 0;
  align-self: center;
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: left;
  gap: 10px;
}
.post-main > .meta,
.post-main > .post-card-title,
.post-main > p {
  margin: 0;
}
.post-excerpt {
  color: color-mix(in srgb, var(--muted) 80%, var(--text) 20%);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.post-card .post-meta-row {
  gap: 10px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  width: 100%;
}
.post-card .meta-left {
  font-weight: 600;
  letter-spacing: 0.02em;
}
.post-card .meta-right {
  gap: 8px;
  align-items: center;
  justify-content: flex-end;
  margin-left: auto;
  padding-left: 6px;
  overflow: hidden;
}
.post-card .post-meta {
  width: 100%;
}
.home-page .post-meta-row {
  align-items: center;
}
.post-card .tag {
  border: 1px solid color-mix(in srgb, var(--line) 35%, transparent);
  color: var(--text);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.35);
  padding: 0 14px;
  height: 30px;
  align-items: center;
  justify-content: center;
  border-width: 2px;
  line-height: 1;
  padding-top: 1px;
}
.post-card .tag.tag-primary {
  background: color-mix(in srgb, var(--accent) 6%, var(--panel) 94%);
  border-color: color-mix(in srgb, var(--line) 45%, transparent);
  border-radius: 8px;
  margin-right: 6px;
  font-weight: 600;
  font-synthesis: weight;
}
.post-card .tag-list {
  margin-left: 0;
  gap: 6px;
  flex-wrap: nowrap;
  overflow: hidden;
}
.post-card .tag.tag-secondary {
  background: color-mix(in srgb, var(--accent) 6%, var(--panel) 94%);
  border-color: color-mix(in srgb, var(--line) 45%, transparent);
}
.tag-label {
  display: inline-block;
  transform: translateY(0);
}
.tag-label:lang(zh) {
  transform: translateY(1px);
}
.post-card .tag:hover {
  transform: translateY(-1px);
  background: linear-gradient(120deg, color-mix(in srgb, var(--accent) 24%, transparent), color-mix(in srgb, var(--panel) 90%, transparent));
  border-color: color-mix(in srgb, var(--accent) 40%, transparent);
}
/* Category page alignment adjustments */
.category-page .post-list li {
  align-items: center;
}
.category-page .post-main {
  align-self: center;
}
.category-page {
  position: relative;
}
.category-sidebar {
  position: fixed;
  top: 180px;
  left: max(18px, calc(50% - 450px - 220px - 24px));
  width: 200px;
  padding: 16px;
  border-radius: 16px;
  border: 1px solid color-mix(in srgb, var(--line) 70%, transparent);
  background: color-mix(in srgb, var(--panel) 92%, var(--accent) 8%);
  box-shadow: 0 16px 32px rgba(49, 40, 28, 0.14);
}
.category-sidebar h3 {
  margin: 0 0 10px;
  font-size: 1rem;
  letter-spacing: 0.03em;
}
.category-nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.category-nav-item {
  display: inline-flex;
  justify-content: space-between;
  gap: 12px;
  padding: 6px 10px;
  border-radius: 10px;
  color: var(--text);
  text-decoration: none;
  transition: background 0.2s ease, transform 0.2s ease, color 0.2s ease;
}
.category-nav-item span:last-child {
  color: var(--muted);
  font-size: 0.85rem;
}
.category-nav-item:hover {
  background: color-mix(in srgb, var(--panel) 80%, var(--accent) 20%);
  transform: translateX(4px);
  color: var(--title-hover);
}
.category-content section {
  scroll-margin-top: 90px;
}
/* Post detail cover and tag chips */
.post-detail-cover {
  width: 100%;
  max-height: 360px;
  object-fit: cover;
  border-radius: 12px;
  border: 1px solid var(--line);
  margin: 14px 0 18px;
}
.post-lock {
  border: 1px dashed var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  margin: 14px 0 18px;
  background: color-mix(in srgb, var(--panel) 90%, var(--accent) 10%);
}
.post-lock-form {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin: 8px 0 4px;
}
.post-lock-input {
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  border-radius: 10px;
  padding: 8px 10px;
  min-width: 220px;
}
.post-lock-btn {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text);
  border-radius: 10px;
  padding: 8px 12px;
  cursor: pointer;
}
.post-lock-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.post-lock-msg {
  min-height: 1.2em;
  margin: 4px 0 0;
  color: var(--muted);
}
.post-comments {
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}
.comments-header h2 {
  margin: 0 0 6px;
}
.comment-hint {
  color: var(--muted);
  font-size: 0.95rem;
  margin: 4px 0 0;
}
.giscus-wrap {
  margin-top: 16px;
}
.quote-bubble {
  position: fixed;
  z-index: 40;
  transform: translateX(-50%);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.16s ease;
}
.quote-btn {
  pointer-events: auto;
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--panel) 80%, var(--accent) 20%);
  color: var(--text);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 0.88rem;
  cursor: pointer;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.12);
}
.quote-btn:hover {
  border-color: var(--accent);
}
.quote-toast {
  position: fixed;
  right: 22px;
  bottom: 24px;
  background: color-mix(in srgb, var(--panel) 88%, var(--accent) 12%);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 8px 12px;
  font-size: 0.9rem;
  color: var(--text);
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.18s ease, transform 0.18s ease;
  z-index: 40;
}
.quote-toast.show {
  opacity: 1;
  transform: translateY(0);
}
.post-lock.is-unlocked {
  display: none;
}
.markdown-body.is-locked {
  display: none;
}
.tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-size: 0.78rem;
  border: 1px solid color-mix(in srgb, var(--line) 90%, transparent);
  border-radius: 999px;
  padding: 0 12px;
  height: 28px;
  color: var(--muted);
  text-decoration: none;
  background: color-mix(in srgb, var(--panel) 98%, transparent);
  line-height: 1;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}
.tag:hover {
  color: var(--text);
  border-color: color-mix(in srgb, var(--accent) 35%, var(--line) 65%);
  background: color-mix(in srgb, var(--panel) 94%, var(--accent) 6%);
}
.tag.tag-primary {
  font-weight: 500;
  background: color-mix(in srgb, var(--panel) 96%, var(--accent) 4%);
}
.tag-list {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-left: 4px;
  align-items: center;
}
.tag.tag-secondary {
  font-size: 0.76rem;
  border-color: color-mix(in srgb, var(--line) 92%, transparent);
  background: color-mix(in srgb, var(--panel) 98%, transparent);
  padding: 0 11px;
  height: 28px;
  margin-right: 0;
}
/* Markdown content typography */
.markdown-body h1,
.markdown-body h2,
.markdown-body h3 {
  margin-top: 1.2em;
  font-weight: 600;
}
.markdown-body p,
.markdown-body ul,
.markdown-body ol,
.markdown-body blockquote {
  margin: 0.8em 0;
}
.markdown-body blockquote {
  border-left: 3px solid var(--line);
  padding-left: 12px;
  color: var(--muted);
}
.markdown-body a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}
.markdown-body ul,
.markdown-body ol {
  padding-left: 1.4em;
}
.markdown-body li {
  margin: 0.35em 0;
}
.markdown-body pre {
  background: color-mix(in srgb, var(--panel) 72%, var(--line) 28%);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px 16px;
  overflow-x: auto;
  font-size: 0.95rem;
  line-height: 1.6;
}
.markdown-body code {
  font-family: "Computer Modern Typewriter", monospace;
  background: color-mix(in srgb, var(--panel) 72%, var(--line) 28%);
  border-radius: 6px;
  padding: 2px 6px;
}
.markdown-body pre code {
  background: transparent;
  padding: 0;
}
.markdown-body hr {
  border: none;
  border-top: 1px solid var(--line);
  margin: 1.6em 0;
}
.markdown-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1em 0;
  font-size: 0.95rem;
}
.markdown-body th,
.markdown-body td {
  border: 1px solid var(--line);
  padding: 8px 10px;
  vertical-align: top;
}
.markdown-body th {
  background: color-mix(in srgb, var(--panel) 84%, var(--line) 16%);
  text-align: left;
}
.markdown-body img {
  max-width: 100%;
  height: auto;
  border-radius: 14px;
  border: 1px solid var(--line);
}
.markdown-body mark {
  background: color-mix(in srgb, var(--accent) 28%, transparent);
  color: inherit;
  padding: 0 4px;
  border-radius: 4px;
}
.markdown-body .footnotes {
  border-top: 1px dashed var(--line);
  margin-top: 1.6em;
  padding-top: 1em;
  color: var(--muted);
  font-size: 0.92rem;
}
.markdown-body .footnotes a {
  color: var(--accent);
}
.markdown-body .callout {
  --callout-color: var(--accent);
  border: 1px solid color-mix(in srgb, var(--callout-color) 40%, var(--line) 60%);
  border-left: 4px solid var(--callout-color);
  background: color-mix(in srgb, var(--panel) 86%, var(--callout-color) 14%);
  border-radius: 14px;
  padding: 12px 14px;
  margin: 1em 0;
}
.markdown-body .callout-note {
  --callout-color: var(--callout-note);
}
.markdown-body .callout-tip {
  --callout-color: var(--callout-tip);
}
.markdown-body .callout-warning {
  --callout-color: var(--callout-warning);
}
.markdown-body .callout-caution {
  --callout-color: var(--callout-caution);
}
.markdown-body .callout-important {
  --callout-color: var(--callout-important);
}
.markdown-body .callout-title {
  margin: 0 0 0.4em;
  font-weight: 600;
}
.markdown-body .mermaid {
  background: color-mix(in srgb, var(--panel) 70%, var(--line) 30%);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px 16px;
  overflow-x: auto;
}
.markdown-body .task-list-item {
  list-style: none;
}
.markdown-body .task-list-item input {
  margin-right: 8px;
}
/* Search input */
.search-input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel);
  color: var(--text);
  padding: 10px 12px;
  font-size: 1rem;
  margin: 12px 0 20px;
  transition: border-color 0.16s ease, box-shadow 0.16s ease;
}
.search-input::placeholder {
  color: var(--muted);
}
.search-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 20%, transparent);
}
/* Footer and small action buttons */
.site-footer {
  padding-bottom: 28px;
  color: var(--muted);
  font-size: 0.92rem;
  margin-top: auto;
  animation: page-fade-in 0.68s ease both;
}
body.is-leaving .site-header,
body.is-leaving .container,
body.is-leaving .site-footer {
  opacity: 0.55;
}
.home-btn {
  display: inline-block;
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px 10px 0;
  margin-bottom: 8px;
  color: var(--muted);
  transition: color 0.16s ease, border-color 0.16s ease;
}
.post-detail .home-btn,
.author-detail-header .home-btn {
  display: block;
  width: fit-content;
  margin-left: auto;
}
.post-header-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.post-header-row .post-meta {
  margin: 0;
}
.post-header-row .home-btn {
  margin: 0 0 0 auto;
}
.home-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}
/* About entry button */
.about-entry {
  display: inline-block;
  text-decoration: none;
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px 12px 1px;
  transition: border-color 0.16s ease, background 0.16s ease, color 0.16s ease;
}
.about-entry:hover {
  color: var(--title-hover);
  border-color: var(--accent);
  background: color-mix(in srgb, var(--panel) 84%, var(--accent) 16%);
}
/* Author list/detail blocks */
.author-grid {
  list-style: none;
  padding: 0;
  margin: 20px 0 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 14px;
}
.author-card {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px;
  background: color-mix(in srgb, var(--panel) 88%, var(--accent) 12%);
}
.author-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
}
.author-avatar {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--panel);
  object-fit: cover;
  flex-shrink: 0;
}
.author-card .author-name {
  margin: 0;
  font-size: 1.15rem;
}
.author-card p {
  margin: 8px 0 0;
  overflow-wrap: anywhere;
}
.author-detail-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.author-detail-row h1 {
  margin: 0;
}
.author-detail-row .home-btn {
  margin: 0 0 0 auto;
}
.author-detail-header h1 {
  margin-bottom: 4px;
}
.author-detail-header p {
  margin-top: 0;
}
/* Global page transition loader */
.page-loader {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(20, 20, 20, 0.28);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
  z-index: 9999;
}
.page-loader.show {
  opacity: 1;
}
/* Loader spinner animation */
.spinner {
  width: 42px;
  height: 42px;
  border: 3px solid var(--line);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}
@keyframes page-fade-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}
@media (prefers-reduced-motion: reduce) {
  .site-header,
  .container,
  .site-footer {
    animation: none;
    transition: none;
  }
  body.is-leaving .site-header,
  body.is-leaving .container,
  body.is-leaving .site-footer {
    opacity: 1;
  }
}
/* Responsive layout for narrow desktop/tablet */
@media (max-width: 980px) {
  .site-header {
    align-items: flex-start;
    gap: 10px;
  }
  nav {
    justify-content: flex-start;
  }
  /* Keep desktop (<=980px) two-column cards in sync while resizing/zooming */
  .post-card__inner {
    grid-template-columns: minmax(150px, 220px) minmax(0, 1fr);
    column-gap: 12px;
    align-items: center;
  }
  .post-cover {
    grid-column: 1;
  }
  .post-main {
    grid-column: 2;
  }
  .category-sidebar {
    position: static;
    width: auto;
    margin-bottom: 16px;
    box-shadow: var(--soft-shadow);
  }
}
/* Re-override for narrower screens: single-column, centered images */
@media (max-width: 900px) {
  .post-card__inner {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: left;
  }
  .post-cover {
    grid-column: auto;
  }
  .post-main {
    grid-column: auto;
    width: 100%;
  }
  .post-cover-wrap {
    width: min(320px, 100%);
    margin: 0 auto;
  }
}
/* Responsive layout for mobile */
@media (max-width: 640px) {
  .site-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
  .post-list li {
    grid-template-columns: 1fr;
    row-gap: 10px;
    align-items: start;
    padding: 14px 6px;
  }
  .post-card__inner {
    justify-items: center;
  }
  .post-cover {
    grid-column: auto;
    width: min(240px, 100%);
    height: auto;
    align-self: center;
  }
  .post-main {
    grid-column: auto;
  }
  nav {
    width: 100%;
    justify-content: flex-start;
  }
  nav a {
    margin-right: 0;
  }
  .author-grid {
    grid-template-columns: 1fr;
  }
  .post-lock-form {
    flex-direction: column;
    align-items: stretch;
  }
  .post-lock-input,
  .post-lock-btn {
    width: 100%;
    min-width: 0;
  }
}