:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;min-width:320px;min-height:100vh;background:#f3f4f6;color:#111827}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}.app-shell{min-height:100vh;display:flex;flex-direction:column}.toolbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 16px;background:#fff;border-bottom:1px solid #e5e7eb}.toolbar .left,.toolbar .right{display:flex;align-items:center;gap:8px}.toolbar .title{font-weight:600;color:#374151}.page{flex:1;display:flex;justify-content:center;padding:24px 16px}.page-inner{width:min(880px,100%);background:#fff;border-radius:12px;box-shadow:0 10px 40px #0000000a;padding:28px}.statusbar{display:flex;justify-content:space-between;align-items:center;gap:12px;font-size:12px;color:#6b7280;background:#fff;border-top:1px solid #e5e7eb;padding:8px 16px}.btn{appearance:none;background:#fff;color:#111827;border:1px solid #d1d5db;border-radius:8px;padding:8px 12px;font-size:14px;line-height:1;cursor:pointer}.btn:hover{border-color:#9ca3af}.btn:disabled{opacity:.6;cursor:default}.btn.primary{background:#2563eb;color:#fff;border-color:#2563eb}.btn.primary:hover{filter:brightness(.95)}.md-editor{min-height:calc(100vh - 220px)}.health-indicator{display:flex;align-items:center;gap:6px;font-size:12px;color:#6b7280}.health-dot{width:10px;height:10px;border-radius:9999px;background:#10b981;box-shadow:0 0 0 2px #d1fae5}.health-text{-webkit-user-select:none;user-select:none}.spinner{width:12px;height:12px;border-radius:9999px;border:2px solid #e5e7eb;border-top-color:#2563eb;animation:spin .8s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}