:root{--bg:#f6f7f9;--card:#fff;--tx:#1b1f24;--mut:#667085;--pri:#e4572e;--bd:#e4e7ec}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--tx)}a{color:inherit}header{background:#111827;color:#fff;padding:10px 16px;display:flex;flex-wrap:wrap;gap:12px;align-items:center}header b{margin-right:8px}header nav{display:flex;flex-wrap:wrap;gap:4px 14px;flex:1 1}header nav a{text-decoration:none;opacity:.85;font-size:14px}header nav a:hover{opacity:1}header form button{background:none;border:1px solid #475467;color:#fff;border-radius:6px;padding:4px 10px;cursor:pointer}main{max-width:1100px;margin:0 auto}.card,main{padding:16px}.card{background:var(--card);border:1px solid var(--bd);border-radius:10px;margin-bottom:16px}.mut{color:var(--mut)}.login{max-width:340px;margin:12vh auto}.login input{width:100%;padding:10px;margin:6px 0 12px;border:1px solid var(--bd);border-radius:8px;font-size:16px}.login button{width:100%;padding:11px;background:var(--pri);color:#fff;border:0;border-radius:8px;font-size:16px;cursor:pointer}.err{color:#b42318;margin-bottom:8px}