.md-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; padding: 24px 0 16px; }
@media (max-width: 900px) { .md-grid { grid-template-columns: 1fr; } }
.md-grid textarea { min-height: 400px; font-size: 14px; font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace; line-height: 1.6; tab-size: 2; }
.md-output { min-height: 400px; padding: 16px; border: 1px solid #e5e6eb; border-radius: 8px; background: #fff; overflow-y: auto; font-size: 14px; line-height: 1.8; color: #1d2129; }
.md-output h1 { font-size: 24px; border-bottom: 1px solid #e5e6eb; padding-bottom: 8px; }
.md-output h2 { font-size: 20px; border-bottom: 1px solid #f2f3f5; padding-bottom: 6px; }
.md-output h3 { font-size: 16px; }
.md-output code { background: #f2f3f5; padding: 2px 6px; border-radius: 3px; font-size: 13px; }
.md-output pre { background: #f7f8fa; padding: 16px; border-radius: 8px; overflow-x: auto; }
.md-output pre code { background: none; padding: 0; }
.md-output blockquote { border-left: 4px solid #165DFF; padding: 8px 16px; background: #f0f5ff; margin: 12px 0; }
.md-output table { border-collapse: collapse; width: 100%; }
.md-output th, .md-output td { border: 1px solid #e5e6eb; padding: 8px 12px; }
.md-output th { background: #f7f8fa; }
.md-output img { max-width: 100%; }
.md-actions { display: flex; gap: 8px; padding-bottom: 48px; flex-wrap: wrap; }
.panel-actions { display: flex; gap: 6px; }
.btn-tiny { padding: 2px 10px; font-size: 12px; border: 1px solid #e5e6eb; border-radius: 4px; background: #fff; color: #4e5969; cursor: pointer; }
.btn-tiny:hover { border-color: #165DFF; color: #165DFF; }