@charset "UTF-8";
:root {
  --color-primary: #06c;
  --color-primary-dark: #049;
  --color-secondary: #6c757d;
  --color-success: #28a745;
  --color-warning: #ffc107;
  --color-danger: #dc3545;
  --color-info: #17a2b8;
  --color-text: #212529;
  --color-text-muted: #6c757d;
  --color-text-light: #fff;
  --color-bg: #fff;
  --color-bg-alt: #f8f9fa;
  --color-bg-card: #fff;
  --color-border: #dee2e6;
  --color-border-light: #e9ecef;
  --shadow-sm: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
  --shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.175);
  --font-family-base:
        -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans',
        sans-serif;
  --font-family-code:
        SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-md: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --line-height-sm: 1.25;
  --line-height-base: 1.5;
  --line-height-lg: 1.75;
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --container-max-width: 1200px;
  --header-height: 4rem;
  --sidebar-width: 280px;
  --border-radius-sm: 0.25rem;
  --border-radius: 0.375rem;
  --border-radius-lg: 0.5rem;
  --border-radius-xl: 0.75rem;
  --transition-fast: 0.15s ease-in-out;
  --transition-base: 0.3s ease-in-out;
  --transition-slow: 0.5s ease-in-out;
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070; }

[data-theme='dark'] {
  --color-text: #e9ecef;
  --color-text-muted: #adb5bd;
  --color-text-light: #fff;
  --color-bg: #121212;
  --color-bg-alt: #1e1e1e;
  --color-bg-card: #242424;
  --color-border: #343a40;
  --color-border-light: #495057;
  --shadow-sm: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.3);
  --shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.7);
  --search-highlight-bg: #06c;
  --search-highlight-color: #fff; }

html[data-theme='light'] {
  --search-highlight-bg: #06c;
  --search-highlight-color: #fff; }

*,
*::before,
*::after {
  box-sizing: border-box; }

html {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%; }

body {
  margin: 0;
  padding: 0;
  color: var(--color-text);
  background-color: var(--color-bg);
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base); }

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0 0 var(--spacing-md) 0;
  font-weight: 600;
  line-height: var(--line-height-sm);
  color: var(--color-text); }

p {
  margin: 0 0 var(--spacing-md) 0; }

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast); }
  a:hover, a:focus {
    color: var(--color-primary-dark);
    text-decoration: underline; }
  a:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px; }

ul,
ol {
  margin: 0 0 var(--spacing-md) 0;
  padding-left: var(--spacing-lg); }

li {
  margin-bottom: var(--spacing-xs); }

img {
  max-width: 100%;
  height: auto;
  vertical-align: middle;
  border-style: none; }

button {
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  font-family: inherit;
  color: inherit; }
  button:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px; }

input,
textarea {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--spacing-sm);
  background-color: var(--color-bg);
  color: var(--color-text);
  transition: border-color var(--transition-fast); }
  input:focus,
  textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1); }
  input::placeholder,
  textarea::placeholder {
    color: var(--color-text-muted); }

code,
pre {
  font-family: var(--font-family-code);
  font-size: 0.9em; }

code {
  padding: 0.125rem 0.25rem;
  background-color: var(--color-bg-alt);
  border-radius: var(--border-radius-sm);
  color: var(--color-danger); }

pre {
  margin: 0 0 var(--spacing-md) 0;
  padding: var(--spacing-md);
  background-color: var(--color-bg-alt);
  border-radius: var(--border-radius);
  overflow-x: auto; }
  pre code {
    padding: 0;
    background-color: transparent;
    color: inherit; }

table {
  width: 100%;
  margin-bottom: var(--spacing-md);
  border-collapse: collapse; }

th,
td {
  padding: var(--spacing-sm);
  text-align: left;
  border-bottom: 1px solid var(--color-border); }

th {
  font-weight: 600;
  color: var(--color-text);
  background-color: var(--color-bg-alt); }

hr {
  margin: var(--spacing-xl) 0;
  border: 0;
  border-top: 1px solid var(--color-border); }

blockquote {
  margin: 0 0 var(--spacing-md) 0;
  padding: var(--spacing-md);
  border-left: 4px solid var(--color-primary);
  background-color: var(--color-bg-alt);
  color: var(--color-text-muted);
  font-style: italic; }
  blockquote p:last-child {
    margin-bottom: 0; }

mark {
  background-color: var(--search-highlight-bg, #06c);
  color: var(--search-highlight-color, #fff);
  padding: 2px 4px;
  border-radius: 3px;
  font-weight: inherit; }

h1 {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  line-height: var(--line-height-sm);
  margin-bottom: var(--spacing-lg); }

h2 {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  line-height: var(--line-height-sm);
  margin-bottom: var(--spacing-md); }

h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  line-height: var(--line-height-sm);
  margin-bottom: var(--spacing-md); }

h4 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  line-height: var(--line-height-base);
  margin-bottom: var(--spacing-sm); }

h5 {
  font-size: var(--font-size-base);
  font-weight: 600;
  line-height: var(--line-height-base);
  margin-bottom: var(--spacing-sm); }

h6 {
  font-size: var(--font-size-sm);
  font-weight: 600;
  line-height: var(--line-height-base);
  margin-bottom: var(--spacing-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em; }

strong,
b {
  font-weight: 600; }

em,
i {
  font-style: italic; }

small {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted); }

mark {
  background-color: #fff3cd;
  padding: 0.125em 0.25em;
  border-radius: var(--border-radius-sm); }

del,
s {
  text-decoration: line-through;
  opacity: 0.7; }

u {
  text-decoration: underline;
  text-decoration-skip-ink: auto; }

sup,
sub {
  font-size: 0.75em;
  line-height: 0;
  position: relative;
  vertical-align: baseline; }

sup {
  top: -0.5em; }

sub {
  bottom: -0.25em; }

abbr[title] {
  border-bottom: 1px dotted var(--color-text-muted);
  text-decoration: none;
  cursor: help; }

footer {
  background-color: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  margin-top: auto;
  padding: var(--spacing-lg) 0; }

.footer-content {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-lg); }
  .footer-content.footer-centered {
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md); }

.footer-info p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  text-align: center;
  /* 确保文本居中 */ }

.footer-links {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center; }
  .footer-links a,
  .footer-links button {
    color: var(--color-text-muted);
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
    text-decoration: none;
    background: none;
    border: none;
    cursor: pointer;
    font-size: var(--font-size-lg); }
    .footer-links a:hover,
    .footer-links button:hover {
      color: var(--color-primary);
      background-color: var(--color-bg); }
    .footer-links a i,
    .footer-links button i {
      font-size: var(--font-size-lg); }
  .footer-links .zhihu-link,
  .footer-links .email-toggle {
    display: inline-flex; }
  .footer-links .zhihu-link {
    align-items: center;
    justify-content: center;
    color: #0f88eb; }
    .footer-links .zhihu-link:hover {
      color: #0b74c7; }
    .footer-links .zhihu-link .zhihu-icon {
      width: 0.9em;
      height: 0.9em; }

@media (max-width: 768px) {
  .footer-content {
    flex-direction: column;
    text-align: center;
    padding: 0 var(--spacing-md); }
  .footer-info p {
    margin-bottom: var(--spacing-sm); } }

.post-layout {
  display: grid;
  grid-template-columns: 280px 1fr 280px;
  gap: var(--spacing-xl);
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--spacing-lg);
  min-height: calc(100vh - var(--header-height)); }

.post-sidebar-left {
  position: sticky;
  top: calc(var(--header-height) + var(--spacing-lg));
  height: fit-content;
  max-height: calc(100vh - var(--header-height) - var(--spacing-xl));
  overflow-y: auto; }
  .post-sidebar-left .sidebar-content {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg); }
    .post-sidebar-left .sidebar-content h3,
    .post-sidebar-left .sidebar-content h4 {
      color: var(--color-text);
      margin-top: 0;
      margin-bottom: var(--spacing-md);
      font-size: var(--font-size-lg);
      border-bottom: 1px solid var(--color-border);
      padding-bottom: var(--spacing-sm); }
    .post-sidebar-left .sidebar-content h4 {
      font-size: var(--font-size-base);
      margin-top: var(--spacing-lg); }

.sidebar-posts-list {
  list-style: none;
  padding: 0;
  margin: 0; }
  .sidebar-posts-list .sidebar-post-item {
    margin-bottom: var(--spacing-sm); }
    .sidebar-posts-list .sidebar-post-item.active .sidebar-post-link {
      background-color: var(--color-primary);
      color: var(--color-text-light); }
  .sidebar-posts-list .sidebar-post-link {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    text-decoration: none;
    color: var(--color-text);
    transition: all var(--transition-fast);
    gap: var(--spacing-sm); }
    .sidebar-posts-list .sidebar-post-link:hover {
      background-color: var(--color-bg-alt); }
    .sidebar-posts-list .sidebar-post-link .sidebar-post-title {
      flex: 1;
      font-size: var(--font-size-sm);
      line-height: 1.4;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden; }
    .sidebar-posts-list .sidebar-post-link .sidebar-post-date {
      flex-shrink: 0;
      font-size: var(--font-size-xs);
      color: var(--color-text-muted); }

.sidebar-categories {
  margin-bottom: var(--spacing-xl); }
  .sidebar-categories .category-group {
    margin-bottom: var(--spacing-sm); }
  .sidebar-categories .category-toggle {
    width: 100%;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: none;
    border: none;
    text-align: left;
    cursor: pointer;
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
    color: var(--color-text); }
    .sidebar-categories .category-toggle:hover {
      background-color: var(--color-bg-alt); }
    .sidebar-categories .category-toggle .category-name {
      flex: 1;
      font-weight: 500; }
    .sidebar-categories .category-toggle .toggle-icon {
      transition: transform var(--transition-fast); }
    .sidebar-categories .category-toggle .post-count {
      font-size: var(--font-size-xs);
      color: var(--color-text-muted); }
  .sidebar-categories .category-posts {
    margin-left: var(--spacing-lg);
    padding-top: var(--spacing-sm); }

.sidebar-latest {
  margin-bottom: var(--spacing-xl); }

.sidebar-category-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs); }
  .sidebar-category-tags .sidebar-category {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: var(--color-bg-alt);
    color: var(--color-text-muted);
    text-decoration: none;
    border-radius: var(--border-radius);
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast); }
    .sidebar-category-tags .sidebar-category:hover {
      background-color: var(--color-primary);
      color: var(--color-text-light); }

.post-main {
  min-width: 0; }

.post-sidebar-right {
  position: sticky;
  top: calc(var(--header-height) + var(--spacing-lg));
  height: fit-content;
  max-height: calc(100vh - var(--header-height) - var(--spacing-xl));
  overflow-y: auto; }
  .post-sidebar-right .toc-container {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg); }
    .post-sidebar-right .toc-container h3 {
      margin-top: 0;
      margin-bottom: var(--spacing-md);
      color: var(--color-text);
      font-size: var(--font-size-lg);
      border-bottom: 1px solid var(--color-border);
      padding-bottom: var(--spacing-sm); }
  .post-sidebar-right .table-of-contents ul {
    list-style: none;
    padding-left: 0;
    margin: 0; }
    .post-sidebar-right .table-of-contents ul ul {
      padding-left: var(--spacing-md);
      margin-top: var(--spacing-xs); }
  .post-sidebar-right .table-of-contents li {
    margin-bottom: var(--spacing-xs); }
  .post-sidebar-right .table-of-contents a {
    color: var(--color-text-muted);
    text-decoration: none;
    font-size: var(--font-size-sm);
    line-height: 1.4;
    display: block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    transition: all var(--transition-fast); }
    .post-sidebar-right .table-of-contents a:hover, .post-sidebar-right .table-of-contents a.active {
      color: var(--color-primary);
      background-color: var(--color-bg-alt); }
    .post-sidebar-right .table-of-contents a.active {
      font-weight: 500;
      border-left: 3px solid var(--color-primary); }

.post-single .post-header {
  margin-bottom: var(--spacing-xl); }
  .post-single .post-header .post-title {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-md);
    line-height: var(--line-height-sm); }
  .post-single .post-header .post-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-md); }
    .post-single .post-header .post-meta span,
    .post-single .post-header .post-meta time {
      position: relative; }
      .post-single .post-header .post-meta span:not(:last-child)::after,
      .post-single .post-header .post-meta time:not(:last-child)::after {
        content: '•';
        margin-left: var(--spacing-md);
        color: var(--color-border); }
  .post-single .post-header .post-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs); }
    .post-single .post-header .post-tags .tag-link {
      display: inline-block;
      padding: var(--spacing-xs) var(--spacing-sm);
      background-color: var(--color-bg-alt);
      color: var(--color-text-muted);
      text-decoration: none;
      border-radius: var(--border-radius);
      font-size: var(--font-size-sm);
      transition: all var(--transition-fast); }
      .post-single .post-header .post-tags .tag-link:hover {
        background-color: var(--color-primary);
        color: var(--color-text-light); }

.post-single .post-content {
  line-height: var(--line-height-lg);
  font-size: var(--font-size-base); }
  .post-single .post-content p {
    margin-bottom: var(--spacing-lg); }
  .post-single .post-content h2,
  .post-single .post-content h3,
  .post-single .post-content h4,
  .post-single .post-content h5,
  .post-single .post-content h6 {
    margin-top: var(--spacing-2xl);
    margin-bottom: var(--spacing-md); }
  .post-single .post-content img {
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm); }

.related-posts {
  margin-top: var(--spacing-2xl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--color-border); }
  .related-posts h3 {
    margin-bottom: var(--spacing-lg); }
  .related-posts .related-posts-list {
    display: grid;
    gap: var(--spacing-lg); }
  .related-posts .related-post {
    padding: var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    transition: all var(--transition-fast); }
    .related-posts .related-post:hover {
      box-shadow: var(--shadow-sm); }
    .related-posts .related-post .related-post-title {
      margin: 0 0 var(--spacing-sm) 0; }
      .related-posts .related-post .related-post-title a {
        color: var(--color-text);
        text-decoration: none; }
        .related-posts .related-post .related-post-title a:hover {
          color: var(--color-primary); }
    .related-posts .related-post .related-post-meta {
      color: var(--color-text-muted);
      font-size: var(--font-size-sm); }

@media (max-width: 1200px) {
  .post-layout {
    grid-template-columns: 240px 1fr 240px;
    gap: var(--spacing-lg); } }

@media (max-width: 1024px) {
  .post-layout {
    grid-template-columns: 200px 1fr;
    gap: var(--spacing-md); }
  .post-sidebar-right {
    display: none; } }

@media (max-width: 768px) {
  .post-layout {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    padding: var(--spacing-md); }
  .post-sidebar-left,
  .post-sidebar-right {
    display: none; }
  .post-single .post-header .post-title {
    font-size: var(--font-size-2xl); } }

.navbar {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(8px);
  transition: all var(--transition-base);
  width: 100%; }

.nav-container {
  max-width: 100%;
  margin: 0;
  padding: 0 var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height); }

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex-shrink: 0; }
  .nav-brand .nav-avatar {
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    object-fit: cover; }
  .nav-brand .nav-title {
    margin: 0;
    font-size: var(--font-size-lg);
    font-weight: 600; }
    .nav-brand .nav-title a {
      color: var(--color-text);
      text-decoration: none; }
      .nav-brand .nav-title a:hover {
        color: var(--color-primary); }
    .nav-brand .nav-title .nav-title-text {
      transition: opacity var(--transition-fast); }

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  flex: 1;
  justify-content: center; }
  .nav-menu .nav-link {
    color: var(--color-text-muted);
    text-decoration: none;
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
    white-space: nowrap; }
    .nav-menu .nav-link:hover, .nav-menu .nav-link.active {
      color: var(--color-primary);
      background-color: var(--color-bg-alt); }

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex-shrink: 0; }

.language-switcher {
  position: relative; }
  .language-switcher .language-toggle {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: none;
    border: none;
    color: var(--color-text-muted);
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
    cursor: pointer; }
    .language-switcher .language-toggle:hover {
      color: var(--color-primary);
      background-color: var(--color-bg-alt); }
  .language-switcher .language-menu {
    position: absolute;
    top: 100%;
    right: 0;
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    display: none;
    min-width: 120px;
    z-index: var(--z-dropdown); }
    .language-switcher .language-menu li {
      list-style: none;
      margin: 0; }
    .language-switcher .language-menu .language-option {
      display: block;
      padding: var(--spacing-sm) var(--spacing-md);
      color: var(--color-text);
      text-decoration: none;
      transition: all var(--transition-fast); }
      .language-switcher .language-menu .language-option:hover {
        background-color: var(--color-bg-alt);
        color: var(--color-primary); }

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  background: none;
  border: none;
  cursor: pointer; }
  .mobile-menu-toggle .hamburger {
    display: block;
    width: 1.5rem;
    height: 2px;
    background-color: var(--color-text);
    margin: 2px 0;
    transition: all var(--transition-fast); }
  .mobile-menu-toggle[aria-expanded='true'] .hamburger:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px); }
  .mobile-menu-toggle[aria-expanded='true'] .hamburger:nth-child(2) {
    opacity: 0; }
  .mobile-menu-toggle[aria-expanded='true'] .hamburger:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px); }

.search-container {
  position: relative;
  display: flex;
  align-items: center; }
  .search-container .search-input {
    width: 200px;
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    background-color: var(--color-bg);
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast); }
    .search-container .search-input:focus {
      border-color: var(--color-primary);
      width: 250px; }
  .search-container .search-button {
    position: absolute;
    right: var(--spacing-xs);
    background: none;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    padding: var(--spacing-xs); }
    .search-container .search-button:hover {
      color: var(--color-primary); }

.social-links {
  display: flex;
  /* 使社交链接内部元素水平排列 */
  align-items: center;
  /* 垂直居中对齐 */
  gap: var(--spacing-sm);
  /* 设置元素之间的间距 */ }

.theme-toggle,
.social-links a,
.social-links button {
  background: none;
  border: none;
  color: var(--color-text-muted);
  padding: var(--spacing-sm);
  border-radius: var(--border-radius);
  transition: all var(--transition-fast);
  cursor: pointer;
  text-decoration: none; }
  .theme-toggle:hover,
  .social-links a:hover,
  .social-links button:hover {
    color: var(--color-primary);
    background-color: var(--color-bg-alt); }

.social-links .zhihu-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #0f88eb; }
  .social-links .zhihu-link:hover {
    color: #0b74c7; }

.zhihu-link .zhihu-icon {
  width: 0.9em;
  height: 0.9em;
  display: block;
  flex-shrink: 0; }

.mobile-menu {
  display: none;
  position: fixed;
  inset: var(--header-height) 0 0 0;
  z-index: var(--z-modal);
  background-color: rgba(0, 0, 0, 0.5);
  height: calc(100vh - var(--header-height)); }
  .mobile-menu[aria-hidden='false'] {
    display: block; }

.mobile-menu-content {
  background-color: var(--color-bg);
  height: 100%;
  padding: var(--spacing-lg);
  box-sizing: border-box;
  display: flex;
  flex-direction: column; }

.mobile-nav-menu {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  flex-grow: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  min-height: 0; }
  .mobile-nav-menu .mobile-nav-link {
    color: var(--color-text);
    text-decoration: none;
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    transition: all var(--transition-fast); }
    .mobile-nav-menu .mobile-nav-link:hover, .mobile-nav-menu .mobile-nav-link.active {
      color: var(--color-primary);
      background-color: var(--color-bg-alt); }

@media (max-width: 768px) {
  .desktop-only {
    display: none !important; }
  .mobile-menu-toggle {
    display: flex; }
  .nav-container {
    padding: 0 var(--spacing-sm); }
  .nav-brand .nav-title-text {
    display: none; }
  .search-container .search-input {
    width: 120px; }
    .search-container .search-input:focus {
      width: 150px; }
  .nav-actions {
    gap: var(--spacing-xs); } }

@media (max-width: 480px) {
  .nav-brand .nav-title .nav-title-text {
    display: none; }
  .search-container .search-input {
    width: 100px; }
    .search-container .search-input:focus {
      width: 120px; } }

.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: var(--z-modal);
  display: none;
  align-items: center;
  justify-content: center; }
  .modal.modal-open {
    display: flex; }
  .modal[aria-hidden='false'] {
    display: flex; }

.modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px); }

.modal-content {
  position: relative;
  background-color: var(--color-bg-card);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  /* 适应新图片宽度 */
  max-width: 633px;
  /* 确保在小屏幕上也有边距 */
  width: calc(100% - var(--spacing-xxl) * 2);
  /*
     * 移除 aspect-ratio，它会限制高度并导致可变内容溢出。
     * 如果此属性仅用于特定模态框（如微信二维码），则应将其移到该模态框内部的特定元素上，
     * 而不是全局应用于 .modal-content。
     */
  /* 添加最大高度和滚动条，以适应不同高度的内容，并确保在小屏幕上不会溢出视口 */
  max-height: calc(100vh - var(--spacing-xxl) * 2);
  /* 确保模态框不会超出视口高度，并留出上下边距 */
  overflow-y: auto;
  /* 当内容超出最大高度时显示垂直滚动条 */
  -webkit-overflow-scrolling: touch;
  /* 改善 iOS 上的滚动体验 */
  z-index: 1; }

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border); }
  .modal-header h2 {
    margin: 0;
    font-size: var(--font-size-xl);
    color: var(--color-text); }
  .modal-header .modal-close {
    background: none;
    border: none;
    color: var(--color-text-muted);
    font-size: var(--font-size-lg);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--border-radius);
    transition: all var(--transition-fast); }
    .modal-header .modal-close:hover {
      color: var(--color-text);
      background-color: var(--color-bg-alt); }

.modal-body {
  padding: var(--spacing-lg);
  text-align: center; }
  .modal-body p {
    color: var(--color-text-muted);
    margin: 0; }

.contact-form .form-group,
.email-template-section .form-group {
  margin-bottom: var(--spacing-lg); }
  .contact-form .form-group label,
  .email-template-section .form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--color-text); }
  .contact-form .form-group .form-control,
  .email-template-section .form-group .form-control {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    background-color: var(--color-bg);
    color: var(--color-text);
    font-family: inherit;
    font-size: var(--font-size-base);
    transition: border-color var(--transition-fast); }
    .contact-form .form-group .form-control:focus,
    .email-template-section .form-group .form-control:focus {
      outline: none;
      border-color: var(--color-primary);
      box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1); }
    .contact-form .form-group .form-control::placeholder,
    .email-template-section .form-group .form-control::placeholder {
      color: var(--color-text-muted); }
  .contact-form .form-group textarea.form-control,
  .email-template-section .form-group textarea.form-control {
    resize: vertical;
    min-height: 120px; }

.contact-form .email-preview,
.email-template-section .email-preview {
  margin: var(--spacing-xl) 0;
  padding: var(--spacing-lg);
  background-color: var(--color-bg-alt);
  border-radius: var(--border-radius);
  border: 1px solid var(--color-border); }
  .contact-form .email-preview h4,
  .email-template-section .email-preview h4 {
    margin: 0 0 var(--spacing-md) 0;
    color: var(--color-text);
    font-size: var(--font-size-base); }
  .contact-form .email-preview .email-template-display,
  .email-template-section .email-preview .email-template-display {
    font-family: monospace;
    font-size: var(--font-size-sm);
    line-height: 1.5;
    white-space: pre-wrap; }
    .contact-form .email-preview .email-template-display strong,
    .email-template-section .email-preview .email-template-display strong {
      color: var(--color-text); }
    .contact-form .email-preview .email-template-display .message-preview,
    .email-template-section .email-preview .email-template-display .message-preview {
      margin: var(--spacing-sm) 0;
      padding: var(--spacing-sm);
      background-color: var(--color-bg);
      border-left: 3px solid var(--color-primary);
      border-radius: 0 var(--border-radius) var(--border-radius) 0;
      min-height: 3em;
      color: var(--color-text-muted); }
    .contact-form .email-preview .email-template-display .email-footer,
    .email-template-section .email-preview .email-template-display .email-footer {
      margin-top: var(--spacing-md); }
      .contact-form .email-preview .email-template-display .email-footer hr,
      .email-template-section .email-preview .email-template-display .email-footer hr {
        border: none;
        border-top: 1px solid var(--color-border);
        margin: var(--spacing-sm) 0; }
      .contact-form .email-preview .email-template-display .email-footer small,
      .email-template-section .email-preview .email-template-display .email-footer small {
        color: var(--color-text-muted);
        font-size: var(--font-size-xs); }

.contact-form .form-actions,
.email-template-section .form-actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl); }

.toast {
  position: fixed;
  top: 20px;
  right: 20px;
  background-color: var(--color-success);
  color: white;
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
  z-index: 9999;
  opacity: 0;
  transform: translateX(100%);
  transition: all var(--transition-base);
  font-size: var(--font-size-sm);
  font-weight: 500;
  max-width: 300px;
  word-wrap: break-word; }
  .toast.show {
    opacity: 1;
    transform: translateX(0); }
  .toast.error {
    background-color: var(--color-danger); }
  .toast.warning {
    background-color: var(--color-warning);
    color: var(--color-text); }
  .toast.info {
    background-color: var(--color-info); }

#css-warning-modal {
  background-color: rgba(0, 0, 0, 0.6); }
  #css-warning-modal .css-warning-content {
    max-width: 500px;
    border-left: 4px solid var(--color-warning); }
    #css-warning-modal .css-warning-content .modal-header {
      background-color: var(--color-warning);
      color: var(--color-text);
      border-bottom: none; }
      #css-warning-modal .css-warning-content .modal-header h3 {
        margin: 0;
        font-size: var(--font-size-lg);
        font-weight: 600; }
      #css-warning-modal .css-warning-content .modal-header .modal-close {
        color: var(--color-text); }
        #css-warning-modal .css-warning-content .modal-header .modal-close:hover {
          background-color: rgba(0, 0, 0, 0.1); }
    #css-warning-modal .css-warning-content .modal-body {
      text-align: left;
      padding: var(--spacing-xl) var(--spacing-lg); }
      #css-warning-modal .css-warning-content .modal-body p {
        color: var(--color-text);
        margin: 0;
        line-height: var(--line-height-lg);
        font-size: var(--font-size-base); }
    #css-warning-modal .css-warning-content .modal-footer {
      padding: var(--spacing-lg);
      border-top: 1px solid var(--color-border);
      text-align: center; }
      #css-warning-modal .css-warning-content .modal-footer .css-warning-ok {
        background-color: var(--color-primary);
        color: var(--color-text-light);
        border: none;
        padding: var(--spacing-sm) var(--spacing-xl);
        border-radius: var(--border-radius);
        font-size: var(--font-size-base);
        font-weight: 500;
        cursor: pointer;
        transition: all var(--transition-fast); }
        #css-warning-modal .css-warning-content .modal-footer .css-warning-ok:hover {
          background-color: var(--color-primary-dark);
          transform: translateY(-1px);
          box-shadow: var(--shadow); }
        #css-warning-modal .css-warning-content .modal-footer .css-warning-ok:focus {
          outline: 2px solid var(--color-primary);
          outline-offset: 2px; }

@keyframes modalFadeIn {
  from {
    opacity: 0;
    transform: scale(0.9); }
  to {
    opacity: 1;
    transform: scale(1); } }

.modal[aria-hidden='false'] .modal-content {
  animation: modalFadeIn 0.3s ease-out; }

#css-warning-modal.show .css-warning-content {
  animation: modalFadeIn 0.3s ease-out; }

@media (max-width: 480px) {
  .modal-content {
    width: 95%;
    margin: var(--spacing-md); }
  .modal-header,
  .modal-body {
    padding: var(--spacing-md); }
  #css-warning-modal .css-warning-content {
    width: 95%;
    margin: var(--spacing-md); }
    #css-warning-modal .css-warning-content .modal-body {
      padding: var(--spacing-lg) var(--spacing-md); }
    #css-warning-modal .css-warning-content .modal-footer {
      padding: var(--spacing-md); } }

.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-md);
  border: none;
  border-radius: var(--border-radius);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-weight: 500;
  text-align: center;
  background-color: var(--color-primary);
  color: var(--color-text-light); }
  .btn:hover {
    background-color: var(--color-primary-dark); }
  .btn.btn-secondary {
    background-color: var(--color-secondary); }
    .btn.btn-secondary:hover {
      background-color: var(--color-text); }
  .btn.btn-outline {
    background-color: transparent;
    color: var(--color-primary);
    border: 1px solid var(--color-primary); }
    .btn.btn-outline:hover {
      background-color: var(--color-primary);
      color: var(--color-text-light); }
  .btn.btn-sm {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-sm); }
  .btn.btn-lg {
    padding: var(--spacing-lg) var(--spacing-xl);
    font-size: var(--font-size-lg); }

.icon-btn {
  display: inline-block;
  border: none;
  border-radius: var(--border-radius);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  background-color: transparent;
  color: var(--color-text-muted); }
  .icon-btn:hover {
    color: var(--color-primary);
    background-color: var(--color-bg-alt); }
  .icon-btn.active {
    color: var(--color-primary);
    background-color: var(--color-bg-alt); }

.search-container {
  position: relative; }

.search-results-container .search-no-results {
  text-align: center;
  padding: var(--spacing-xl);
  color: var(--color-text-muted); }
  .search-results-container .search-no-results .no-results-icon {
    font-size: var(--font-size-xxl);
    margin-bottom: var(--spacing-md);
    opacity: 0.5; }
    .search-results-container .search-no-results .no-results-icon i {
      color: var(--color-text-muted); }
  .search-results-container .search-no-results .no-results-text {
    font-size: var(--font-size-md);
    margin-bottom: var(--spacing-sm);
    font-weight: 500; }
  .search-results-container .search-no-results .no-results-suggestion {
    font-size: var(--font-size-sm);
    opacity: 0.8; }

.search-results-container .search-results-list .search-result-item {
  border-bottom: 1px solid var(--color-border); }
  .search-results-container .search-results-list .search-result-item:last-child {
    border-bottom: none; }
  .search-results-container .search-results-list .search-result-item .search-result-link {
    display: block;
    padding: var(--spacing-lg);
    text-decoration: none;
    color: inherit;
    transition: background-color var(--transition-fast); }
    .search-results-container .search-results-list .search-result-item .search-result-link:hover, .search-results-container .search-results-list .search-result-item .search-result-link:focus {
      background-color: var(--color-bg-alt);
      outline: none; }
    .search-results-container .search-results-list .search-result-item .search-result-link .search-result-title {
      font-weight: 600;
      color: var(--color-text);
      margin-bottom: var(--spacing-sm);
      line-height: 1.3;
      font-size: var(--font-size-md); }
      .search-results-container .search-results-list .search-result-item .search-result-link .search-result-title mark {
        background-color: var(--color-primary);
        color: white;
        padding: 2px 4px;
        border-radius: 3px;
        font-weight: inherit; }
    .search-results-container .search-results-list .search-result-item .search-result-link .search-result-meta {
      display: flex;
      align-items: center;
      gap: var(--spacing-md);
      font-size: var(--font-size-sm);
      color: var(--color-text-muted); }
      .search-results-container .search-results-list .search-result-item .search-result-link .search-result-meta .search-result-date {
        opacity: 0.8;
        font-weight: 500; }
      .search-results-container .search-results-list .search-result-item .search-result-link .search-result-meta .search-result-categories {
        display: flex;
        gap: var(--spacing-xs); }
        .search-results-container .search-results-list .search-result-item .search-result-link .search-result-meta .search-result-categories .search-category-tag {
          background-color: var(--color-primary);
          color: white;
          padding: 3px 8px;
          border-radius: 12px;
          font-size: var(--font-size-xs);
          font-weight: 500; }
          .search-results-container .search-results-list .search-result-item .search-result-link .search-result-meta .search-result-categories .search-category-tag mark {
            background-color: transparent;
            color: inherit;
            padding: 0;
            font-weight: bold; }

.mobile-search {
  position: relative;
  margin-bottom: var(--spacing-lg); }
  .mobile-search .mobile-search-input {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    background-color: var(--color-bg);
    font-size: var(--font-size-base);
    transition: border-color var(--transition-fast); }
    .mobile-search .mobile-search-input:focus {
      border-color: var(--color-primary);
      outline: none; }

[data-theme='dark'] .search-result-title mark {
  background-color: var(--color-primary);
  color: var(--color-bg); }

@media (max-width: 768px) {
  .search-results-container .search-results-list .search-result-item .search-result-link {
    padding: var(--spacing-md); }
    .search-results-container .search-results-list .search-result-item .search-result-link .search-result-title {
      font-size: var(--font-size-base); }
    .search-results-container .search-results-list .search-result-item .search-result-link .search-result-meta {
      flex-direction: column;
      align-items: flex-start;
      gap: var(--spacing-xs); } }

.mermaid {
  display: block;
  margin: var(--spacing-lg) 0;
  padding: var(--spacing-md);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  overflow-x: auto;
  text-align: center;
  position: relative;
  clear: both;
  min-height: 200px;
  /* stylelint-disable selector-class-pattern */
  /* stylelint-enable selector-class-pattern */ }
  .mermaid svg {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
    overflow: visible;
    font-family: var(--font-family-base);
    font-size: 14px; }
  .mermaid .error-message {
    color: var(--color-danger);
    padding: var(--spacing-md);
    border: 1px solid var(--color-danger);
    border-radius: var(--border-radius);
    background-color: rgba(220, 53, 69, 0.1);
    margin: var(--spacing-md) 0;
    font-family: var(--font-family-code);
    font-size: var(--font-size-sm); }
  .mermaid .actor {
    fill: var(--color-bg-card);
    stroke: var(--color-border); }
  .mermaid .messageLine0,
  .mermaid .messageLine1 {
    stroke: var(--color-text); }
  .mermaid .labelText {
    fill: var(--color-text);
    font-family: var(--font-family-base); }
  .mermaid .node rect {
    fill: var(--color-bg-card);
    stroke: var(--color-border); }
  .mermaid .node .label {
    color: var(--color-text);
    font-family: var(--font-family-base); }
  .mermaid .edgePath .path {
    stroke: var(--color-text-muted); }
  .mermaid .classBox {
    fill: var(--color-bg-card);
    stroke: var(--color-border); }
  .mermaid .classLabel {
    fill: var(--color-text);
    font-family: var(--font-family-base); }
  .mermaid .state {
    fill: var(--color-bg-card);
    stroke: var(--color-border); }
  .mermaid .stateLabel {
    fill: var(--color-text);
    font-family: var(--font-family-base); }
  .mermaid .mindmap-node {
    fill: var(--color-bg-card);
    stroke: var(--color-border); }
  .mermaid .mindmap-label {
    fill: var(--color-text);
    font-family: var(--font-family-base); }

@media (max-width: 768px) {
  .mermaid {
    margin: var(--spacing-md) 0;
    padding: var(--spacing-sm); }
    .mermaid svg {
      font-size: 12px; } }

[data-theme='dark'] .mermaid {
  background-color: var(--color-bg-alt);
  /* stylelint-disable selector-class-pattern */
  /* stylelint-enable selector-class-pattern */ }
  [data-theme='dark'] .mermaid .label,
  [data-theme='dark'] .mermaid .labelText,
  [data-theme='dark'] .mermaid .classLabel,
  [data-theme='dark'] .mermaid .stateLabel,
  [data-theme='dark'] .mermaid .mindmap-label {
    fill: var(--color-text) !important; }
  [data-theme='dark'] .mermaid .messageLine0,
  [data-theme='dark'] .mermaid .messageLine1,
  [data-theme='dark'] .mermaid .edgePath .path {
    stroke: var(--color-text-muted) !important; }

.highlight {
  position: relative;
  margin: var(--spacing-lg) 0;
  border-radius: var(--border-radius);
  overflow: hidden;
  background-color: var(--color-bg-alt);
  border: 1px solid var(--color-border); }
  .highlight pre {
    margin: 0;
    padding: var(--spacing-md);
    overflow-x: auto;
    background-color: transparent;
    border: none;
    border-radius: 0; }
    .highlight pre code {
      background-color: transparent;
      color: inherit;
      padding: 0;
      border-radius: 0;
      font-size: 0.875em;
      line-height: 1.6; }
  .highlight .lntable {
    border-spacing: 0;
    padding: 0;
    margin: 0;
    border: 0;
    width: auto;
    overflow: initial;
    border-collapse: collapse; }
    .highlight .lntable .lntd {
      vertical-align: top;
      padding: 0;
      margin: 0;
      border: 0; }
      .highlight .lntable .lntd:first-child {
        width: 10px; }
        .highlight .lntable .lntd:first-child .lnt {
          margin-right: var(--spacing-md);
          color: var(--color-text-muted);
          user-select: none; }

[data-theme='light'] .highlight {
  background-color: #fff;
  border-color: #d0d7de; }
  [data-theme='light'] .highlight pre,
  [data-theme='light'] .highlight code {
    color: #1f2328;
    background-color: transparent; }
  [data-theme='light'] .highlight .chroma {
    color: #1f2328;
    background-color: #fff; }
  [data-theme='light'] .highlight .chroma .err {
    color: #f6f8fa;
    background-color: #82071e; }
  [data-theme='light'] .highlight .chroma .hl {
    background-color: #e5e5e5; }
  [data-theme='light'] .highlight .chroma .lnt,
  [data-theme='light'] .highlight .chroma .ln {
    color: #7f7f7f; }
  [data-theme='light'] .highlight .chroma .k,
  [data-theme='light'] .highlight .chroma .kc,
  [data-theme='light'] .highlight .chroma .kd,
  [data-theme='light'] .highlight .chroma .kn,
  [data-theme='light'] .highlight .chroma .kp,
  [data-theme='light'] .highlight .chroma .kr,
  [data-theme='light'] .highlight .chroma .kt {
    color: #cf222e; }
  [data-theme='light'] .highlight .chroma .na,
  [data-theme='light'] .highlight .chroma .nc,
  [data-theme='light'] .highlight .chroma .nx,
  [data-theme='light'] .highlight .chroma .p,
  [data-theme='light'] .highlight .chroma .ge,
  [data-theme='light'] .highlight .chroma .go {
    color: #1f2328; }
  [data-theme='light'] .highlight .chroma .no,
  [data-theme='light'] .highlight .chroma .nd,
  [data-theme='light'] .highlight .chroma .nt,
  [data-theme='light'] .highlight .chroma .m,
  [data-theme='light'] .highlight .chroma .mb,
  [data-theme='light'] .highlight .chroma .mf,
  [data-theme='light'] .highlight .chroma .mh,
  [data-theme='light'] .highlight .chroma .mi,
  [data-theme='light'] .highlight .chroma .il,
  [data-theme='light'] .highlight .chroma .mo,
  [data-theme='light'] .highlight .chroma .o,
  [data-theme='light'] .highlight .chroma .ow {
    color: #0550ae; }
  [data-theme='light'] .highlight .chroma .ni,
  [data-theme='light'] .highlight .chroma .nb,
  [data-theme='light'] .highlight .chroma .nf,
  [data-theme='light'] .highlight .chroma .fm {
    color: #6639ba; }
  [data-theme='light'] .highlight .chroma .nl {
    color: #900;
    font-weight: bold; }
  [data-theme='light'] .highlight .chroma .nn {
    color: #24292e; }
  [data-theme='light'] .highlight .chroma .bp,
  [data-theme='light'] .highlight .chroma .c,
  [data-theme='light'] .highlight .chroma .ch,
  [data-theme='light'] .highlight .chroma .cm,
  [data-theme='light'] .highlight .chroma .c1,
  [data-theme='light'] .highlight .chroma .cs,
  [data-theme='light'] .highlight .chroma .cp,
  [data-theme='light'] .highlight .chroma .cpf {
    color: #57606a; }
  [data-theme='light'] .highlight .chroma .nv,
  [data-theme='light'] .highlight .chroma .vc,
  [data-theme='light'] .highlight .chroma .vg,
  [data-theme='light'] .highlight .chroma .vi,
  [data-theme='light'] .highlight .chroma .vm {
    color: #953800; }
  [data-theme='light'] .highlight .chroma .s,
  [data-theme='light'] .highlight .chroma .sa,
  [data-theme='light'] .highlight .chroma .sb,
  [data-theme='light'] .highlight .chroma .sc,
  [data-theme='light'] .highlight .chroma .dl,
  [data-theme='light'] .highlight .chroma .sd,
  [data-theme='light'] .highlight .chroma .s2,
  [data-theme='light'] .highlight .chroma .se,
  [data-theme='light'] .highlight .chroma .sh,
  [data-theme='light'] .highlight .chroma .si,
  [data-theme='light'] .highlight .chroma .sx,
  [data-theme='light'] .highlight .chroma .sr,
  [data-theme='light'] .highlight .chroma .s1 {
    color: #0a3069; }
  [data-theme='light'] .highlight .chroma .ss {
    color: #032f62; }
  [data-theme='light'] .highlight .chroma .gd {
    color: #82071e;
    background-color: #ffebe9; }
  [data-theme='light'] .highlight .chroma .gi {
    color: #116329;
    background-color: #dafbe1; }
  [data-theme='light'] .highlight .chroma .gl {
    text-decoration: underline; }
  [data-theme='light'] .highlight .chroma .w {
    color: #fff; }

[data-theme='dark'] .highlight {
  background-color: #0d1117;
  border-color: #30363d; }
  [data-theme='dark'] .highlight pre,
  [data-theme='dark'] .highlight code {
    color: #e6edf3;
    background-color: transparent; }
  [data-theme='dark'] .highlight .chroma {
    color: #e6edf3;
    background-color: #0d1117; }
  [data-theme='dark'] .highlight .chroma .err {
    color: #f85149; }
  [data-theme='dark'] .highlight .chroma .hl {
    background-color: #6e7681; }
  [data-theme='dark'] .highlight .chroma .lnt {
    color: #737679; }
  [data-theme='dark'] .highlight .chroma .ln,
  [data-theme='dark'] .highlight .chroma .w {
    color: #6e7681; }
  [data-theme='dark'] .highlight .chroma .k,
  [data-theme='dark'] .highlight .chroma .kd,
  [data-theme='dark'] .highlight .chroma .kn,
  [data-theme='dark'] .highlight .chroma .kr,
  [data-theme='dark'] .highlight .chroma .kt,
  [data-theme='dark'] .highlight .chroma .nn,
  [data-theme='dark'] .highlight .chroma .o,
  [data-theme='dark'] .highlight .chroma .ow,
  [data-theme='dark'] .highlight .chroma .gt {
    color: #ff7b72; }
  [data-theme='dark'] .highlight .chroma .kc,
  [data-theme='dark'] .highlight .chroma .kp,
  [data-theme='dark'] .highlight .chroma .no,
  [data-theme='dark'] .highlight .chroma .nl,
  [data-theme='dark'] .highlight .chroma .py,
  [data-theme='dark'] .highlight .chroma .nv,
  [data-theme='dark'] .highlight .chroma .vc,
  [data-theme='dark'] .highlight .chroma .vg,
  [data-theme='dark'] .highlight .chroma .vi,
  [data-theme='dark'] .highlight .chroma .vm,
  [data-theme='dark'] .highlight .chroma .ld,
  [data-theme='dark'] .highlight .chroma .sa,
  [data-theme='dark'] .highlight .chroma .dl,
  [data-theme='dark'] .highlight .chroma .se,
  [data-theme='dark'] .highlight .chroma .sh,
  [data-theme='dark'] .highlight .chroma .sr,
  [data-theme='dark'] .highlight .chroma .gh,
  [data-theme='dark'] .highlight .chroma .gu {
    color: #79c0ff; }
  [data-theme='dark'] .highlight .chroma .nc,
  [data-theme='dark'] .highlight .chroma .ne {
    color: #f0883e;
    font-weight: bold; }
  [data-theme='dark'] .highlight .chroma .nd,
  [data-theme='dark'] .highlight .chroma .nf,
  [data-theme='dark'] .highlight .chroma .fm {
    color: #d2a8ff;
    font-weight: bold; }
  [data-theme='dark'] .highlight .chroma .ni {
    color: #ffa657; }
  [data-theme='dark'] .highlight .chroma .nt,
  [data-theme='dark'] .highlight .chroma .gi {
    color: #7ee787; }
  [data-theme='dark'] .highlight .chroma .l,
  [data-theme='dark'] .highlight .chroma .s,
  [data-theme='dark'] .highlight .chroma .sb,
  [data-theme='dark'] .highlight .chroma .sc,
  [data-theme='dark'] .highlight .chroma .sd,
  [data-theme='dark'] .highlight .chroma .s2,
  [data-theme='dark'] .highlight .chroma .si,
  [data-theme='dark'] .highlight .chroma .sx,
  [data-theme='dark'] .highlight .chroma .s1,
  [data-theme='dark'] .highlight .chroma .ss,
  [data-theme='dark'] .highlight .chroma .m,
  [data-theme='dark'] .highlight .chroma .mb,
  [data-theme='dark'] .highlight .chroma .mf,
  [data-theme='dark'] .highlight .chroma .mh,
  [data-theme='dark'] .highlight .chroma .mi,
  [data-theme='dark'] .highlight .chroma .il,
  [data-theme='dark'] .highlight .chroma .mo {
    color: #a5d6ff; }
  [data-theme='dark'] .highlight .chroma .c,
  [data-theme='dark'] .highlight .chroma .ch,
  [data-theme='dark'] .highlight .chroma .cm,
  [data-theme='dark'] .highlight .chroma .c1 {
    color: #8b949e;
    font-style: italic; }
  [data-theme='dark'] .highlight .chroma .cs,
  [data-theme='dark'] .highlight .chroma .cp,
  [data-theme='dark'] .highlight .chroma .cpf {
    color: #8b949e;
    font-weight: bold;
    font-style: italic; }
  [data-theme='dark'] .highlight .chroma .go,
  [data-theme='dark'] .highlight .chroma .gp {
    color: #8b949e; }
  [data-theme='dark'] .highlight .chroma .ge {
    font-style: italic; }
  [data-theme='dark'] .highlight .chroma .gd,
  [data-theme='dark'] .highlight .chroma .gr {
    color: #ffa198; }
  [data-theme='dark'] .highlight .chroma .gd {
    background-color: #490202; }
  [data-theme='dark'] .highlight .chroma .gi {
    background-color: #0f5323; }
  [data-theme='dark'] .highlight .chroma .gs {
    font-weight: bold; }
  [data-theme='dark'] .highlight .chroma .gl {
    text-decoration: underline; }

@media (max-width: 768px) {
  .highlight {
    margin: var(--spacing-md) 0; }
    .highlight pre {
      padding: var(--spacing-sm);
      font-size: 0.8em; } }

.home-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-lg); }

.hero-section {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
  padding: var(--spacing-2xl) 0; }
  .hero-section .hero-title {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-md);
    color: var(--color-text); }
  .hero-section .hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-lg); }
  .hero-section .hero-content {
    max-width: 800px;
    margin: 0 auto;
    font-size: var(--font-size-lg);
    line-height: var(--line-height-lg);
    color: var(--color-text-muted); }

.latest-posts h2 {
  margin-bottom: var(--spacing-xl);
  text-align: center;
  font-size: var(--font-size-2xl); }

.latest-posts .posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-2xl); }

.latest-posts .view-all {
  text-align: center; }
  .latest-posts .view-all .view-all-link {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-xl);
    background-color: var(--color-primary);
    color: var(--color-text-light);
    text-decoration: none;
    border-radius: var(--border-radius);
    font-weight: 500;
    transition: all var(--transition-base); }
    .latest-posts .view-all .view-all-link:hover {
      background-color: var(--color-primary-dark);
      transform: translateY(-2px);
      box-shadow: var(--shadow); }

.post-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  height: 100%;
  display: flex;
  flex-direction: column; }
  .post-card .post-title {
    margin: 0 0 var(--spacing-md) 0;
    font-size: var(--font-size-lg); }
    .post-card .post-title a {
      color: var(--color-text);
      text-decoration: none;
      transition: color var(--transition-fast); }
      .post-card .post-title a:hover {
        color: var(--color-primary); }
  .post-card .post-summary {
    flex: 1;
    color: var(--color-text-muted);
    line-height: var(--line-height-lg);
    margin-bottom: var(--spacing-md);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden; }
  .post-card .post-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border); }
    .post-card .post-meta .post-categories {
      display: flex;
      gap: var(--spacing-xs); }
      .post-card .post-meta .post-categories .category {
        padding: var(--spacing-xs) var(--spacing-sm);
        background-color: var(--color-bg-alt);
        border-radius: var(--border-radius-sm);
        font-size: var(--font-size-xs); }

@media (max-width: 768px) {
  .home-container {
    padding: var(--spacing-lg) var(--spacing-md); }
  .hero-section {
    padding: var(--spacing-lg) 0; }
    .hero-section .hero-title {
      font-size: var(--font-size-3xl); }
    .hero-section .hero-subtitle {
      font-size: var(--font-size-lg); }
  .latest-posts .posts-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg); } }

.list-page {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-lg); }

.list-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl); }
  .list-header .list-title {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-md);
    color: var(--color-text); }
  .list-header .list-description {
    max-width: 600px;
    margin: 0 auto var(--spacing-lg) auto;
    color: var(--color-text-muted);
    line-height: var(--line-height-lg); }
  .list-header .list-meta {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm); }
    .list-header .list-meta .posts-count {
      padding: var(--spacing-xs) var(--spacing-sm);
      background-color: var(--color-bg-alt);
      border-radius: var(--border-radius); }

.posts-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl); }

.post-item {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base); }
  .post-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg); }
  .post-item .post-item-header {
    margin-bottom: var(--spacing-md); }
    .post-item .post-item-header .post-item-title {
      margin: 0 0 var(--spacing-sm) 0;
      font-size: var(--font-size-xl); }
      .post-item .post-item-header .post-item-title a {
        color: var(--color-text);
        text-decoration: none;
        transition: color var(--transition-fast); }
        .post-item .post-item-header .post-item-title a:hover {
          color: var(--color-primary); }
    .post-item .post-item-header .post-item-meta {
      display: flex;
      flex-wrap: wrap;
      gap: var(--spacing-md);
      color: var(--color-text-muted);
      font-size: var(--font-size-sm); }
      .post-item .post-item-header .post-item-meta span,
      .post-item .post-item-header .post-item-meta time {
        position: relative; }
        .post-item .post-item-header .post-item-meta span:not(:last-child)::after,
        .post-item .post-item-header .post-item-meta time:not(:last-child)::after {
          content: '•';
          margin-left: var(--spacing-md);
          color: var(--color-border); }
  .post-item .post-item-summary {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-muted);
    line-height: var(--line-height-lg); }
    .post-item .post-item-summary .read-more {
      color: var(--color-primary);
      text-decoration: none;
      font-weight: 500;
      transition: color var(--transition-fast); }
      .post-item .post-item-summary .read-more:hover {
        color: var(--color-primary-dark);
        text-decoration: underline; }
  .post-item .post-item-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border); }
    .post-item .post-item-footer .post-categories,
    .post-item .post-item-footer .post-tags {
      display: flex;
      gap: var(--spacing-xs); }
    .post-item .post-item-footer .category-link,
    .post-item .post-item-footer .tag-link {
      padding: var(--spacing-xs) var(--spacing-sm);
      border-radius: var(--border-radius-sm);
      text-decoration: none;
      font-size: var(--font-size-sm);
      transition: all var(--transition-fast); }
    .post-item .post-item-footer .category-link {
      background-color: var(--color-primary);
      color: var(--color-text-light); }
      .post-item .post-item-footer .category-link:hover {
        background-color: var(--color-primary-dark); }
    .post-item .post-item-footer .tag-link {
      background-color: var(--color-bg-alt);
      color: var(--color-text-muted); }
      .post-item .post-item-footer .tag-link:hover {
        background-color: var(--color-secondary);
        color: var(--color-text-light); }

.pagination {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--spacing-2xl);
  padding: var(--spacing-lg);
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius); }
  .pagination .pagination-prev,
  .pagination .pagination-next {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--border-radius);
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    background-color: var(--color-primary);
    color: var(--color-text-light); }
    .pagination .pagination-prev:hover,
    .pagination .pagination-next:hover {
      background-color: var(--color-primary-dark); }
  .pagination .pagination-info {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm); }

.no-posts {
  text-align: center;
  padding: var(--spacing-3xl);
  color: var(--color-text-muted);
  font-size: var(--font-size-lg); }

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
  margin: 2rem 0; }
  @media (max-width: 768px) {
    .projects-grid {
      grid-template-columns: 1fr;
      gap: 1.5rem; } }
.project-card {
  border: 1px solid #e1e4e8;
  border-radius: 6px;
  overflow: hidden;
  transition: box-shadow 0.3s ease;
  background: var(--card-background); }
  .project-card:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1); }

.project-thumbnail {
  width: 100%;
  height: 200px;
  overflow: hidden; }
  .project-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease; }
    .project-card:hover .project-thumbnail img {
      transform: scale(1.05); }

.project-content {
  padding: 1.5rem; }

.project-item-header {
  margin-bottom: 1rem; }
  .project-item-header .project-item-title {
    margin: 0 0 0.5rem;
    font-size: 1.25rem; }
    .project-item-header .project-item-title a {
      color: var(--text-color);
      text-decoration: none; }
      .project-item-header .project-item-title a:hover {
        color: var(--link-color); }
  .project-item-header .project-website a {
    color: var(--link-color);
    font-size: 0.9rem;
    text-decoration: none;
    border: 1px solid var(--link-color);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    transition: background-color 0.3s ease; }
    .project-item-header .project-website a:hover {
      background-color: var(--link-color);
      color: white; }

.project-summary {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 1rem; }

.project-item-footer .project-categories,
.project-item-footer .project-tags {
  margin-top: 0.5rem; }

.project-item-footer .category-link,
.project-item-footer .tag-link {
  display: inline-block;
  font-size: 0.8rem;
  margin-right: 0.5rem;
  margin-bottom: 0.5rem;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  background-color: var(--tag-background);
  color: var(--text-muted);
  text-decoration: none; }
  .project-item-footer .category-link:hover,
  .project-item-footer .tag-link:hover {
    background-color: var(--link-color);
    color: white; }

@media (max-width: 768px) {
  .list-page {
    padding: var(--spacing-lg) var(--spacing-md); }
  .list-header .list-title {
    font-size: var(--font-size-2xl); }
  .post-item .post-item-header .post-item-title {
    font-size: var(--font-size-lg); }
  .post-item .post-item-footer {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-sm); }
  .pagination {
    flex-direction: column;
    gap: var(--spacing-md); } }

.post-single {
  background-color: var(--color-bg-card);
  border-radius: var(--border-radius);
  padding: var(--spacing-xl);
  border: 1px solid var(--color-border); }
  .post-single .post-header .post-meta span::after,
  .post-single .post-header .post-meta time::after {
    color: var(--color-text-muted);
    opacity: 0.5; }
  .post-single .post-header .post-meta span:last-child::after,
  .post-single .post-header .post-meta time:last-child::after {
    display: none; }
  .post-single .post-content pre {
    background-color: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    overflow-x: auto; }
    .post-single .post-content pre code {
      background: none;
      padding: 0;
      border-radius: 0; }
  .post-single .post-content blockquote {
    border-left: 4px solid var(--color-primary);
    padding-left: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
    background-color: var(--color-bg-alt);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: 0 var(--border-radius) var(--border-radius) 0; }
    .post-single .post-content blockquote p:last-child {
      margin-bottom: 0; }
  .post-single .post-content table {
    display: block;
    width: 100%;
    max-width: 100%;
    border-collapse: collapse;
    margin: var(--spacing-lg) 0;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    overflow: hidden;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch; }
    .post-single .post-content table th,
    .post-single .post-content table td {
      padding: var(--spacing-sm) var(--spacing-md);
      text-align: left;
      border-bottom: 1px solid var(--color-border); }
      .post-single .post-content table th:not(:last-child),
      .post-single .post-content table td:not(:last-child) {
        border-right: 1px solid var(--color-border); }
    .post-single .post-content table th {
      background-color: var(--color-bg-alt);
      font-weight: 600; }
    .post-single .post-content table tr:last-child td {
      border-bottom: none; }
  .post-single .post-content ul,
  .post-single .post-content ol {
    padding-left: var(--spacing-xl); }
    .post-single .post-content ul li,
    .post-single .post-content ol li {
      margin-bottom: var(--spacing-sm);
      line-height: var(--line-height-lg); }
  .post-single .post-content hr {
    border: none;
    height: 1px;
    background-color: var(--color-border);
    margin: var(--spacing-2xl) 0; }

.projects-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 30px;
  margin-top: 30px; }
  .projects-grid .project-item {
    flex: 1;
    min-width: calc(33.333% - 20px);
    text-align: center; }
    .projects-grid .project-item a {
      display: block; }
      .projects-grid .project-item a img {
        width: 100%;
        height: 200px;
        object-fit: cover;
        border-radius: 4px; }
      .projects-grid .project-item a .no-thumbnail {
        width: 100%;
        height: 200px;
        display: flex;
        align-items: center;
        justify-content: center;
        background-color: #f5f5f5;
        border-radius: 4px;
        font-size: 14px;
        color: #666; }
    .projects-grid .project-item .project-link {
      margin-top: 15px; }
      .projects-grid .project-item .project-link a {
        color: #333;
        text-decoration: none;
        font-size: 16px; }
        .projects-grid .project-item .project-link a:hover {
          text-decoration: underline; }

/* 当只有一个项目时，居中显示并适当放大 */
.projects-grid:has(.project-item:nth-child(2):not(.project-item:nth-child(3))) .project-item {
  min-width: calc(50% - 15px);
  max-width: calc(50% - 15px);
  margin: 0 auto;
  flex: none; }

/* 当只有一个项目时，居中显示并适当放大 */
.projects-grid:not(:has(.project-item:nth-child(2))) .project-item {
  min-width: 100%;
  max-width: 600px;
  margin: 0 auto;
  flex: none; }

.projects-card-grid {
  margin-top: 28px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px; }

.project-card {
  border: 1px solid var(--color-border);
  border-radius: 14px;
  background: var(--color-bg-card);
  overflow: hidden;
  box-shadow: var(--shadow-sm); }
  .project-card a {
    display: block;
    padding: 18px 18px 16px;
    color: inherit;
    text-decoration: none;
    transition: background-color 0.2s ease, transform 0.2s ease; }
    .project-card a:hover {
      background-color: var(--color-bg-alt);
      transform: translateY(-1px); }

.project-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px; }

.project-title {
  margin: 0;
  font-size: 26px;
  line-height: 1.2;
  color: var(--color-text); }

.project-arrow {
  flex: none;
  color: var(--color-text-muted);
  font-size: 18px;
  line-height: 1; }

.project-description {
  margin: 10px 0 0;
  color: var(--color-text-muted);
  line-height: 1.65;
  font-size: 15px;
  white-space: normal;
  overflow-wrap: anywhere; }

@media (max-width: 768px) {
  .projects-grid .project-item,
  .projects-grid:has(.project-item:nth-child(2):not(.project-item:nth-child(3))) .project-item,
  .projects-grid:not(:has(.project-item:nth-child(2))) .project-item {
    min-width: 100%;
    max-width: 100%; }
  .projects-card-grid {
    grid-template-columns: 1fr;
    gap: 14px; }
  .project-card a {
    padding-left: 16px;
    padding-right: 16px; }
  .project-title {
    font-size: 23px; }
  .project-description {
    white-space: normal; } }

.show {
  display: block !important; }

.hide {
  display: none !important; }

.invisible {
  visibility: hidden !important; }

.visible {
  visibility: visible !important; }

.text-left {
  text-align: left !important; }

.text-center {
  text-align: center !important; }

.text-right {
  text-align: right !important; }

.d-flex {
  display: flex !important; }

.d-inline-flex {
  display: inline-flex !important; }

.justify-content-center {
  justify-content: center !important; }

.align-items-center {
  align-items: center !important; }

@media (max-width: 767px) {
  .mobile-only {
    display: block !important; }
  .desktop-only {
    display: none !important; } }

@media (min-width: 768px) {
  .mobile-only {
    display: none !important; }
  .desktop-only {
    display: block !important; } }

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important; }

.skip-to-main {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
  background-color: var(--color-primary);
  color: var(--color-text-light);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius);
  text-decoration: none;
  font-weight: 600;
  z-index: 9999; }
  .skip-to-main:focus {
    position: fixed;
    top: var(--spacing-sm);
    left: var(--spacing-sm);
    width: auto;
    height: auto;
    clip: auto;
    margin: 0;
    overflow: visible;
    white-space: normal; }

.focus-visible:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--border-radius-sm); }

@media (prefers-contrast: high) {
  :root {
    --color-text: #000;
    --color-bg: #fff;
    --color-primary: #00e;
    --color-border: #000; }
  [data-theme='dark'] {
    --color-text: #fff;
    --color-bg: #000;
    --color-primary: #6af;
    --color-border: #fff; } }

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important; } }

.keyboard-navigation *:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px; }

.keyboard-navigation button:focus,
.keyboard-navigation a:focus,
.keyboard-navigation input:focus,
.keyboard-navigation textarea:focus,
.keyboard-navigation select:focus {
  box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.3); }

.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important; }

@media (prefers-reduced-data: reduce) {
  .image-optional {
    display: none; } }