/* roulang page: index */
:root {
      --bg-canvas: #0d1117;
      --bg-surface: #161b22;
      --bg-card: #21262d;
      --border-subtle: rgba(255, 255, 255, 0.08);
      --border-bright: rgba(255, 255, 255, 0.2);
      --color-primary: #2ea043;
      --color-accent: #388bfd;
      --color-text-main: #f0f6fc;
      --color-text-body: #c9d1d9;
      --color-text-muted: #8b949e;
    }
    body {
      background-color: var(--bg-canvas);
      color: var(--color-text-body);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      box-sizing: border-box;
    }
    .font-mono-code {
      font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    }
    .sidebar-active {
      background-color: rgba(56, 139, 253, 0.15);
      border-left: 3px solid #388bfd;
      color: #ffffff !important;
    }
    .custom-scrollbar::-webkit-scrollbar {
      width: 6px;
      height: 6px;
    }
    .custom-scrollbar::-webkit-scrollbar-track {
      background: #0d1117;
    }
    .custom-scrollbar::-webkit-scrollbar-thumb {
      background: #30363d;
      border-radius: 3px;
    }
    .custom-scrollbar::-webkit-scrollbar-thumb:hover {
      background: #8b949e;
    }
    .card-hover-fx {
      transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .card-hover-fx:hover {
      border-color: var(--border-bright);
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(0,0,0,0.5);
    }

/* roulang page: category1 */
:root {
      --bg-canvas: #0d1117;
      --bg-surface: #161b22;
      --bg-card: #21262d;
      --border-subtle: rgba(255, 255, 255, 0.08);
      --border-bright: rgba(255, 255, 255, 0.2);
      --color-primary: #2ea043;
      --color-accent: #388bfd;
      --color-text-main: #f0f6fc;
      --color-text-body: #c9d1d9;
      --color-text-muted: #8b949e;
    }
    body {
      background-color: var(--bg-canvas);
      color: var(--color-text-body);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      box-sizing: border-box;
    }
    .card-hover-fx {
      transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .card-hover-fx:hover {
      border-color: var(--border-bright);
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(0,0,0,0.5);
    }
    .custom-scrollbar::-webkit-scrollbar {
      width: 6px;
      height: 6px;
    }
    .custom-scrollbar::-webkit-scrollbar-thumb {
      background: #30363d;
      border-radius: 3px;
    }
    .custom-scrollbar::-webkit-scrollbar-track {
      background: transparent;
    }
    .font-mono-code {
      font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
    }
    .sidebar-active {
      background-color: #21262d;
      color: #f0f6fc;
      border-left: 3px solid var(--color-primary);
    }

/* roulang page: article */
:root {
      --bg-canvas: #0d1117;
      --bg-surface: #161b22;
      --bg-card: #21262d;
      --border-subtle: rgba(255, 255, 255, 0.08);
      --border-bright: rgba(255, 255, 255, 0.2);
      --color-primary: #2ea043;
      --color-accent: #388bfd;
      --color-text-main: #f0f6fc;
      --color-text-body: #c9d1d9;
      --color-text-muted: #8b949e;
    }
    body {
      background-color: var(--bg-canvas);
      color: var(--color-text-body);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      box-sizing: border-box;
    }
    .custom-scrollbar::-webkit-scrollbar {
      width: 6px;
      height: 6px;
    }
    .custom-scrollbar::-webkit-scrollbar-track {
      background: #0d1117;
    }
    .custom-scrollbar::-webkit-scrollbar-thumb {
      background: #30363d;
      border-radius: 3px;
    }
    .card-hover-fx {
      transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .card-hover-fx:hover {
      border-color: var(--border-bright);
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(0,0,0,0.5);
    }
    .article-entry {
      line-height: 1.85;
      font-size: 15px;
      color: #c9d1d9;
    }
    .article-entry h2 {
      font-size: 1.35rem;
      font-weight: 700;
      color: #f0f6fc;
      margin-top: 2rem;
      margin-bottom: 0.85rem;
      padding-bottom: 0.5rem;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .article-entry h3 {
      font-size: 1.15rem;
      font-weight: 600;
      color: #f0f6fc;
      margin-top: 1.5rem;
      margin-bottom: 0.65rem;
    }
    .article-entry p {
      margin-bottom: 1.15rem;
    }
    .article-entry ul, .article-entry ol {
      margin-bottom: 1.25rem;
      padding-left: 1.4rem;
    }
    .article-entry li {
      margin-bottom: 0.4rem;
    }
    .article-entry blockquote {
      border-left: 3px solid #2ea043;
      padding: 0.75rem 1rem;
      margin: 1.25rem 0;
      background: #161b22;
      border-radius: 0 6px 6px 0;
      color: #8b949e;
    }
    .article-entry code {
      font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
      font-size: 0.875em;
      background: #21262d;
      padding: 0.15rem 0.35rem;
      border-radius: 4px;
      color: #f0883e;
    }