:root{color-scheme:dark;--bg: #0d1117;--panel: #161b22;--border: #30363d;--text: #e6edf3;--muted: #8b949e;--accent: #58a6ff;--danger: #f85149;font-family:Segoe UI,system-ui,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);min-height:100vh}a{color:var(--accent);text-decoration:none}button{background:var(--accent);color:#0d1117;border:none;border-radius:6px;padding:.5rem 1rem;font-weight:600;cursor:pointer}button.secondary{background:transparent;color:var(--text);border:1px solid var(--border)}input,textarea{background:var(--panel);border:1px solid var(--border);color:var(--text);border-radius:6px;padding:.5rem .75rem;width:100%}.layout{max-width:960px;margin:0 auto;padding:2rem 1.25rem}.card{background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:1rem 1.25rem;margin-bottom:.75rem}.muted{color:var(--muted);font-size:.9rem}.row{display:flex;gap:.75rem;flex-wrap:wrap;align-items:center}h1{font-size:1.75rem;margin:0 0 .5rem}