.app{flex-direction:column;min-height:100%;display:flex}.app-header{border-bottom:1px solid var(--color-border)}.app-nav{max-width:var(--max-width);justify-content:space-between;align-items:center;gap:1rem;margin:0 auto;padding:1rem 1.5rem;display:flex}.brand{color:var(--color-fg);font-size:1.1rem;font-weight:700}.nav-links{gap:1.25rem;display:flex}.nav-links a{color:var(--color-muted)}.nav-links a:hover,.nav-links a.active{color:var(--color-fg)}.app-main{width:100%;max-width:var(--max-width);flex:1;margin:0 auto;padding:2.5rem 1.5rem}.page{flex-direction:column;align-items:flex-start;gap:1rem;display:flex}.card{padding:1rem 0}.app-footer{border-top:1px solid var(--color-border);text-align:center;color:var(--color-muted);padding:1.25rem 1.5rem;font-size:.9rem}:root{--color-bg:#fff;--color-fg:#1a1a1a;--color-muted:#6b7280;--color-border:#e5e7eb;--color-accent:#646cff;--color-accent-hover:#535bf2;--max-width:960px;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5}@media (prefers-color-scheme:dark){:root{--color-bg:#1a1a1a;--color-fg:#ffffffde;--color-muted:#9ca3af;--color-border:#2d2d2d}}*{box-sizing:border-box}html,body,#root{height:100%}body{background-color:var(--color-bg);color:var(--color-fg);margin:0}a{color:var(--color-accent);text-decoration:none}a:hover{color:var(--color-accent-hover)}h1{font-size:2.4rem;line-height:1.1}code{background-color:var(--color-border);border-radius:4px;padding:.15em .35em;font-size:.9em}button{background-color:var(--color-accent);color:#fff;cursor:pointer;border:1px solid #0000;border-radius:8px;padding:.6em 1.2em;font-family:inherit;font-size:1rem;font-weight:500;transition:border-color .2s}button:hover{border-color:var(--color-accent-hover)}button:focus-visible{outline:3px auto var(--color-accent)}