/* GitHub-like Markdown styling */
:root{
  --bg:#ffffff;
  --panel:#ffffff;
  --muted:#586069;
  --accent:#0366d6;
  --accent-700:#005cc5;
  --border:#e1e4e8;
}
*{box-sizing:border-box}
body{margin:0;font-family: -apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif; background:var(--bg); color:#24292e}
.container{max-width:980px;margin:0 auto;padding:0 16px}
.site-header{background:#f6f8fa;border-bottom:1px solid var(--border);padding:16px 0}
.site-title{margin:0;font-size:18px;color:#24292e;font-weight:600}
.site-sub{margin:4px 0 0 0;color:var(--muted);font-size:14px}
.md-content{background:var(--panel);padding:32px 0;border-radius:0}
.md-content h1{color:#24292e;margin-top:0;font-size:32px;font-weight:600;border-bottom:1px solid var(--border);padding-bottom:8px}
.md-content h2{color:#24292e;font-size:24px;font-weight:600;margin-top:24px;border-bottom:1px solid var(--border);padding-bottom:8px}
.md-content h3{color:#24292e;font-size:20px;font-weight:600;margin-top:24px}
.md-content h4{color:#24292e;font-size:16px;font-weight:600;margin-top:24px}
.md-content h5{color:#24292e;font-size:14px;font-weight:600;margin-top:24px}
.md-content h6{color:#24292e;font-size:12px;font-weight:600;margin-top:24px}
.md-content p{line-height:1.5;color:#24292e;margin:16px 0}
.md-content a{color:var(--accent);text-decoration:none}
.md-content a:hover{text-decoration:underline}
.md-content pre{background:#f6f8fa;padding:16px;border-radius:6px;overflow:auto;border:1px solid var(--border)}
.md-content code{background:#f6f8fa;padding:2px 4px;border-radius:3px;font-family: 'SFMono-Regular',Consolas,'Liberation Mono',Menlo,Courier,monospace;font-size:85%;color:#d73a49}
.md-content pre code{background:none;padding:0}
.site-footer{padding:16px 0;color:var(--muted);font-size:12px;border-top:1px solid var(--border);background:#f6f8fa}

/* Table of Contents */
.toc { margin-bottom: 24px; padding: 16px; background: #f6f8fa; border: 1px solid var(--border); border-radius: 6px; }
.toc h2 { font-size: 16px; color: #24292e; margin-top: 0; display: flex; justify-content: space-between; align-items: center; font-weight: 600; }
.toc-toggle{background:none;border:none;color:var(--muted);cursor:pointer;font-size:14px;padding:0;margin:0}
.toc-toggle:hover{color:var(--accent)}
.toc ul { list-style: none; padding-left: 0; margin: 8px 0; }
.toc li { margin: 4px 0; }
.toc a { color: var(--accent); text-decoration: none; font-size: 14px; }
.toc a:hover { text-decoration: underline; }
.toc ul ul { padding-left: 16px; }

/* Responsive */
@media (max-width:768px){.container{padding:0 12px}.md-content{padding:16px 0}.toc{padding:12px}}