body{font-family:system-ui,Arial,sans-serif;margin:0}.container{max-width:1100px;margin:24px auto;padding:0 16px}.nav{display:flex;gap:16px;margin-bottom:16px}.nav a{text-decoration:none;padding:8px 12px;border:1px solid #ddd;border-radius:6px}.nav a.active{background:#f0f0f0}.card{border:1px solid #ddd;border-radius:8px;padding:16px;margin-bottom:16px}.btn{padding:8px 12px;border:1px solid #444;border-radius:6px;background:#fff;cursor:pointer}input,select{width:100%;padding:8px;border:1px solid #ccc;border-radius:6px}.row{display:grid;grid-template-columns:1fr 1fr;gap:12px}label{font-size:.9rem;color:#444}