body{font-family:system-ui;max-width:1000px;margin:auto;padding:1em;color:#222}table{border-collapse:collapse;width:100%}td,th{border:1px solid #ccc;padding:6px;text-align:left}th{background:#eee}.ph{border:2px dashed #c60;padding:1em;margin:1em 0;background:#fff7ee}.warn{background:#fff3c4;padding:.5em}nav a{margin-right:1em}