:root {
  --color-page-bg: #f5f5f7;
  --color-card-bg: rgba(255, 255, 255, 0.75);
  --color-card-blur: blur(24px);
  --color-text-primary: #1d1d1f;
  --color-text-secondary: #86868b;
  --color-text-tertiary: #a1a1a6;
  --color-border: rgba(0, 0, 0, 0.05);
  --color-blue: #0066cc;
  --color-blue-hover: #0077ed;
  
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
  --font-mono: 'SFMono-Regular', Consolas, "Liberation Mono", Menlo, Courier, monospace;
}

body[data-lang='zh'] {
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--color-page-bg);
  color: var(--color-text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: inherit;
  text-decoration: none;
}

.page-shell,
.detail-layout {
  max-width: 1400px;
  margin: 0 auto;
  padding: 40px;
}

.page-shell {
  max-width: 1280px;
  padding: 60px 40px 100px;
}

.card-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: stretch;
}

.panel-toolbar,
.detail-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 60px;
}

.toolbar-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.header-github {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: var(--color-text-primary);
  color: #fff;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 500;
  transition: opacity 0.2s ease;
}

.header-github:hover {
  opacity: 0.8;
}

.hero-headings {
  display: grid;
  gap: 16px;
  max-width: 800px;
}

.hero-panel h1 {
  margin: 0;
  font-size: clamp(3rem, 5vw, 4.5rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.05;
  color: var(--color-text-primary);
}

.hero-copy,
.style-description,
.detail-sidebar p {
  color: var(--color-text-secondary);
}

.hero-copy {
  margin: 0 0 40px;
  max-width: 68ch;
  font-size: 1.25rem;
  line-height: 1.5;
  font-weight: 400;
  letter-spacing: -0.015em;
}

.hero-panel {
  margin-bottom: 60px;
  padding: 0;
  background: transparent;
  border: none;
  box-shadow: none;
}

.style-card {
  display: flex;
  flex-direction: column;
  background: var(--color-card-bg);
  backdrop-filter: var(--color-card-blur);
  -webkit-backdrop-filter: var(--color-card-blur);
  border: 1px solid var(--color-border);
  border-radius: 18px;
  padding: 32px;
  transition: transform 0.3s cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
  box-shadow: 0 4px 16px -4px rgba(0, 0, 0, 0.05);
}

.style-card[hidden] {
  display: none !important;
}

.style-card:hover {
  transform: translateY(-4px) scale(1.005);
  box-shadow: 0 16px 32px -8px rgba(0, 0, 0, 0.1);
}

.style-card h2,
.detail-main h1,
.detail-sidebar h2 {
  font-weight: 600;
  color: var(--color-text-primary);
  margin: 0 0 12px;
  letter-spacing: -0.02em;
}

.style-card h2 {
  font-size: 24px;
  line-height: 1.2;
}

.style-category {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-blue);
  margin: 0 0 16px;
}

.eyebrow {
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-blue);
  margin: 0 0 12px;
}

.style-description {
  margin: 0 0 28px;
  font-size: 15px;
  line-height: 1.5;
  flex-grow: 1;
}

.style-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.style-actions a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 500;
  font-size: 14px;
  padding: 12px 14px;
  border-radius: 10px;
  text-align: center;
  transition: all 0.2s ease;
}

.icon {
  flex: none;
  opacity: 0.82;
  height: 1.1em;
  width: 1.1em;
}

.style-actions [data-card-action='light'],
.style-actions [data-card-action='dark'] {
  background: rgba(0, 0, 0, 0.04);
  color: var(--color-text-primary);
}

.style-actions [data-card-action='light']:hover,
.style-actions [data-card-action='dark']:hover {
  background: rgba(0, 0, 0, 0.08);
}

.style-actions [data-card-action='details'] {
  grid-column: 1 / -1;
  background: var(--color-blue);
  border: 1px solid var(--color-blue);
  color: #ffffff;
}

.style-actions [data-card-action='details']:hover {
  background: var(--color-blue-hover);
  border-color: var(--color-blue-hover);
}

.style-actions [data-card-action='github'] {
  grid-column: 1 / -1;
  background: #24292f;
  color: #ffffff;
  border: 1px solid #24292f;
}

.style-actions [data-card-action='github']:hover {
  background: #1b1f23;
  border-color: #1b1f23;
}

.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(0, 0, 0, 0.04);
  color: var(--color-text-secondary);
  border: none;
  border-radius: 20px;
  padding: 8px 18px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.filter-chip:hover {
  background: rgba(0, 0, 0, 0.08);
  color: var(--color-text-primary);
}

.filter-chip.is-active {
  background: var(--color-text-primary);
  color: #ffffff;
}

.search-field {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 40px 0 24px;
  max-width: 600px;
}

.search-label-wrap {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
}

.search-field input {
  padding: 14px 20px;
  border-radius: 14px;
  border: 1px solid var(--color-border);
  background: var(--color-card-bg);
  backdrop-filter: var(--color-card-blur);
  -webkit-backdrop-filter: var(--color-card-blur);
  font-family: inherit;
  font-size: 16px;
  color: var(--color-text-primary);
  transition: all 0.2s ease;
  box-shadow: 0 2px 8px -2px rgba(0, 0, 0, 0.02);
}

.search-field input:focus {
  outline: none;
  border-color: var(--color-blue);
  box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.2);
}

#result-count {
  font-size: 14px;
  color: var(--color-text-tertiary);
  margin: 0;
}

.language-control {
  display: flex;
  align-items: center;
  gap: 16px;
}

.language-label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--color-text-tertiary);
  text-transform: uppercase;
}

.language-switch {
  display: flex;
  gap: 4px;
  background: rgba(0, 0, 0, 0.05);
  padding: 4px;
  border-radius: 10px;
}

.language-switch button {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: transparent;
  border: none;
  border-radius: 6px;
  padding: 6px 12px;
  font-family: inherit;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all 0.2s ease;
}

.language-switch button.is-active {
  background: #ffffff;
  color: var(--color-text-primary);
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

/* Detail Page */
.detail-layout {
  display: flex;
  justify-content: center;
}

.detail-main {
  width: 100%;
  max-width: 800px;
  background: var(--color-card-bg);
  backdrop-filter: var(--color-card-blur);
  -webkit-backdrop-filter: var(--color-card-blur);
  border: 1px solid var(--color-border);
  border-radius: 24px;
  padding: 60px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.04);
}

.detail-toolbar {
  margin-bottom: 40px;
  display: flex;
  align-items: center;  
  justify-content: space-between;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
  font-size: 15px;
  color: var(--color-text-secondary);
  padding: 10px 16px;
  background: rgba(0,0,0,0.03);
  border-radius: 12px;
  transition: background 0.2s;
}

.back-link:hover {
  background: rgba(0,0,0,0.06);
  color: var(--color-text-primary);
}

.detail-file {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  margin: 0 0 24px;
}

.markdown-doc[hidden] {
  display: none;
}

.markdown-doc {
  color: var(--color-text-primary);
  font-size: 17px;
  line-height: 1.6;
}

.markdown-doc > :first-child {
  margin-top: 0;
}

.markdown-doc h1,
.markdown-doc h2,
.markdown-doc h3,
.markdown-doc h4 {
  font-weight: 600;
  color: var(--color-text-primary);
  margin: 2em 0 0.8em;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.markdown-doc h1 {
  font-size: 40px;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-top: 0;
}

.markdown-doc h2 {
  font-size: 32px;
}

.markdown-doc h3 {
  font-size: 24px;
}

.markdown-doc p,
.markdown-doc ul,
.markdown-doc ol,
.markdown-doc blockquote,
.markdown-doc table,
.markdown-doc pre {
  margin: 0 0 1.2em;
}

.markdown-doc ul,
.markdown-doc ol {
  padding-left: 1.5em;
}

.markdown-doc li + li {
  margin-top: 0.5em;
}

.markdown-doc blockquote {
  padding: 0 0 0 20px;
  border-left: 4px solid var(--color-blue);
  color: var(--color-text-secondary);
  font-style: italic;
  background: rgba(0,102,204,0.03);
  margin-left: -20px;
  padding-right: 20px;
  padding-top: 10px;
  padding-bottom: 10px;
  border-radius: 0 12px 12px 0;
}

.markdown-doc code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  padding: 0.25em 0.5em;
  background: rgba(0, 0, 0, 0.05);
  border-radius: 6px;
}

.markdown-doc pre {
  padding: 24px;
  background: #1e1e1e;
  color: #d4d4d4;
  border-radius: 16px;
  overflow-x: auto;
}

.markdown-doc pre code {
  padding: 0;
  background: transparent;
  color: inherit;
  border: none;
  font-size: 14px;
}

.markdown-doc table {
  width: 100%;
  border-collapse: collapse;
  margin: 32px 0;
  display: block;
  overflow-x: auto;
  border-radius: 12px;
  box-shadow: 0 0 0 1px var(--color-border);
}

.markdown-doc th,
.markdown-doc td {
  padding: 14px 20px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  min-width: 140px;
}

.markdown-doc th {
  font-weight: 500;
  color: var(--color-text-secondary);
  background: rgba(0,0,0,0.02);
}

pre {
  background: #1e1e1e;
  color: #d4d4d4;
  border-radius: 16px;
  padding: 24px;
  font-family: var(--font-mono);
  white-space: pre-wrap;
  font-size: 14px;
}

:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px var(--color-page-bg), 0 0 0 4px var(--color-blue);
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto; transform: none !important; transition: none !important; }
}

@media (max-width: 900px) {
  .page-shell {
    padding: 32px 24px 60px;
  }
  .card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .detail-main {
    padding: 40px;
  }
}

@media (max-width: 640px) {
  .page-shell,
  .detail-layout {
    padding: 20px 16px;
  }
  .card-grid {
    grid-template-columns: 1fr;
  }
  .hero-panel h1 {
    font-size: 32px;
  }
  .detail-main {
    padding: 24px;
    border: none;
    border-radius: 0;
    box-shadow: none;
  }
  .markdown-doc h1 {
    font-size: 28px;
  }
}