body { background:#f5f7fa; }
.card { border:0; border-radius:.75rem; box-shadow:0 1px 3px rgba(0,0,0,.06); }
.preview-content { background:#fff; padding:2rem; border-radius:.5rem; min-height:60vh; }
.editor-pane, .preview-pane { max-height:90vh; overflow-y:auto; }
.section-block textarea { font-family:ui-monospace, monospace; font-size:.9rem; }
.stat-label { color:#6c757d; font-size:.85rem; text-transform:uppercase; letter-spacing:.05em; }
.stat-value { font-size:1.9rem; font-weight:700; }