:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media(prefers-color-scheme:light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #0d1117;--surface: #161b22;--border: #30363d;--text: #e6edf3;--text-muted: #8b949e;--accent: #4a90d9;--accent-hover: #5aa3f0;--danger: #f85149;--success: #3fb950}body{background:var(--bg);color:var(--text);font-family:Segoe UI,system-ui,sans-serif;font-size:15px;line-height:1.5;min-height:100vh}a{color:var(--accent);text-decoration:none}a:hover{color:var(--accent-hover)}h1,h2,h3{line-height:1.25}.container{max-width:900px;margin:0 auto;padding:0 1rem}.card{background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:1.5rem}.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.5rem 1.25rem;border-radius:6px;border:1px solid transparent;cursor:pointer;font-size:14px;font-weight:600;transition:background .15s,border-color .15s}.btn-primary{background:var(--accent);color:#fff;border-color:var(--accent)}.btn-primary:hover{background:var(--accent-hover);border-color:var(--accent-hover)}.btn-secondary{background:transparent;color:var(--text);border-color:var(--border)}.btn-secondary:hover{background:var(--border)}.btn-danger{background:var(--danger);color:#fff;border-color:var(--danger)}.form-group{display:flex;flex-direction:column;gap:.4rem;margin-bottom:1rem}.form-group label{font-size:13px;color:var(--text-muted);font-weight:600}.form-group input,.form-group textarea,.form-group select{background:var(--bg);border:1px solid var(--border);color:var(--text);border-radius:6px;padding:.5rem .75rem;font-size:14px;outline:none}.form-group input:focus,.form-group textarea:focus{border-color:var(--accent)}.error{color:var(--danger);font-size:13px}nav.topbar{background:var(--surface);border-bottom:1px solid var(--border);padding:.75rem 1.5rem;display:flex;align-items:center;justify-content:space-between}nav.topbar .logo{font-size:18px;font-weight:700;color:var(--accent)}