:root{--green: #1f6f54;--bg: #f4f5f7;--text: #1c1d1f;--muted: #6b7280;--border: #e2e4e8}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text)}.center{min-height:100vh;display:grid;place-items:center;padding:24px}.muted{color:var(--muted)}.error{color:#b42318;font-size:14px}.card{background:#fff;border:1px solid var(--border);border-radius:12px;padding:28px;width:340px;display:flex;flex-direction:column;gap:14px;box-shadow:0 4px 24px #0000000f}.card h1{margin:0 0 4px;font-size:20px}.card label{display:flex;flex-direction:column;gap:6px;font-size:13px;color:var(--muted)}.card input{padding:10px 12px;border:1px solid var(--border);border-radius:8px;font-size:15px;color:var(--text)}.card button{padding:10px 12px;border:0;border-radius:8px;background:var(--green);color:#fff;font-size:15px;cursor:pointer}.card button:disabled{opacity:.6;cursor:default}.setup{display:grid;place-items:center;gap:8px}.shell{min-height:100vh}.topbar{display:flex;align-items:center;gap:16px;padding:12px 20px;background:var(--green);color:#fff}.topbar .muted{color:#d7e6df;margin-right:auto}.topbar button{background:#ffffff26;color:#fff;border:0;padding:6px 12px;border-radius:6px;cursor:pointer}.content{padding:24px}.content code{background:#eef0f2;padding:1px 5px;border-radius:4px}