:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;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;display:flex;place-items:center;min-width:320px;min-height:100vh}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}@media(prefers-color-scheme:light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}body{margin:0;font-family:Nunito,sans-serif;background:linear-gradient(135deg,#89f7fe,#66a6ff);color:#222}.App{max-width:1200px;margin:0 auto;padding:2rem 1rem}.App-header{text-align:center;margin-bottom:1.5rem}.App-header h1{font-size:2.5rem;color:#fff;text-shadow:0 2px 4px rgba(0,0,0,.3)}.theme-toggle{margin-left:1rem;background:#fffc;border:none;padding:.4rem .8rem;border-radius:4px;cursor:pointer;font-size:.9rem}.theme-toggle:hover{background:#fff}body.dark-mode{background:#1a1a1a;color:#eee}body.dark-mode .App-header h1{color:#fff}body.dark-mode .Editor,body.dark-mode .Mark_text{background:#2a2a2a}body.dark-mode .Editor textarea{background:#1e1e1e;color:#ddd}body.dark-mode .Mark_text a{color:#66b2ff}body.dark-mode .toolbar{background:#333;border-bottom-color:#444}body.dark-mode .toolbar button{background:#444;color:#eee;border-color:#555}body.dark-mode .theme-toggle{background:#00000080;color:#fff}.App-main{display:grid;grid-template-columns:1fr 1fr;gap:1rem}@media(max-width:768px){.App-main{grid-template-columns:1fr}}.Editor,.Mark_text{background:#fff;border-radius:8px;box-shadow:0 4px 15px #0000001a;overflow:hidden;display:flex;flex-direction:column;height:70vh}.Editor .toolbar{background:#f4f4f4;border-bottom:1px solid #ddd;padding:.5rem;display:flex;gap:.5rem}.Editor .toolbar button{background:#fff;border:1px solid #ccc;padding:.3rem .6rem;border-radius:4px;cursor:pointer;font-size:.9rem;transition:background .2s}.Editor .toolbar button:hover{background:#eee}.Editor textarea{flex:1;border:none;resize:none;padding:1rem;font-size:1rem;font-family:Courier New,monospace;outline:none}.Editor textarea::placeholder{color:#999}.Mark_text .innerDiv{padding:1.5rem;overflow-y:auto}.Mark_text h1,.Mark_text h2,.Mark_text h3,.Mark_text h4,.Mark_text h5,.Mark_text h6{margin-top:1.5rem;margin-bottom:.5rem}.Mark_text p{line-height:1.6;margin-bottom:1rem}.Mark_text code{background:#f2f2f2;padding:.2em .4em;border-radius:4px;font-family:Courier New,monospace}.Mark_text pre{background:#f2f2f2;padding:1rem;border-radius:6px;overflow-x:auto}.Mark_text a{color:#3b82f6;text-decoration:none}.Mark_text a:hover{text-decoration:underline}