:root{--accent: #3b82f6;--radius: 7px}html[data-theme=light]{--bg: #ffffff;--fg: #1f2328;--muted: #656d76;--border: #d0d7de;--toolbar-bg: #f6f8fa;--editor-bg: #ffffff;--editor-fg: #1f2328;--preview-bg: #ffffff;--btn-bg: #ffffff;--btn-hover: #eef1f4;--btn-active: #e2e8f0;--code-bg: #f6f8fa;--code-fg: #1f2328;--quote-border: #d0d7de;--table-stripe: #f6f8fa;--shadow: 0 6px 24px rgba(31, 35, 40, .12);--tok-comment: #6e7781;--tok-keyword: #cf222e;--tok-string: #0a3069;--tok-number: #0550ae;--tok-title: #6639ba;--tok-builtin: #953800;--tok-attr: #0550ae;--tok-meta: #6e7781}html[data-theme=dark]{--bg: #0d1117;--fg: #e6edf3;--muted: #8b949e;--border: #30363d;--toolbar-bg: #161b22;--editor-bg: #0d1117;--editor-fg: #e6edf3;--preview-bg: #0d1117;--btn-bg: #21262d;--btn-hover: #30363d;--btn-active: #3c444d;--code-bg: #161b22;--code-fg: #e6edf3;--quote-border: #30363d;--table-stripe: #161b22;--shadow: 0 6px 24px rgba(0, 0, 0, .5);--tok-comment: #8b949e;--tok-keyword: #ff7b72;--tok-string: #a5d6ff;--tok-number: #79c0ff;--tok-title: #d2a8ff;--tok-builtin: #ffa657;--tok-attr: #79c0ff;--tok-meta: #8b949e}*{box-sizing:border-box}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}html,body{margin:0;height:100%;background:var(--bg);color:var(--fg);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased}#app{display:flex;flex-direction:column;height:100vh}.toolbar{display:flex;align-items:center;gap:8px;padding:8px 12px;background:var(--toolbar-bg);border-bottom:1px solid var(--border);flex:0 0 auto;-webkit-user-select:none;user-select:none}.brand{display:flex;align-items:center;gap:6px;font-weight:700;font-size:15px}.brand .logo{font-size:18px}.filename-wrap{max-width:240px;overflow:hidden}.filename{color:var(--muted);font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:block}.spacer{flex:1 1 auto}.btn{font:inherit;font-size:13px;padding:6px 12px;border:1px solid var(--border);background:var(--btn-bg);color:var(--fg);border-radius:var(--radius);cursor:pointer;white-space:nowrap}.btn:hover{background:var(--btn-hover)}.btn:active{background:var(--btn-active)}.icon-btn{padding:6px 9px;font-size:15px}a.btn{text-decoration:none;display:inline-flex;align-items:center;gap:4px}.btn-accent{background:var(--accent);color:#fff;border-color:var(--accent)}.btn-accent:hover{background:#2f6fe0;color:#fff}.dl-icon{font-size:14px}.view-toggle{display:inline-flex;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}.view-toggle button{font:inherit;font-size:13px;padding:6px 12px;border:none;border-right:1px solid var(--border);background:var(--btn-bg);color:var(--fg);cursor:pointer}.view-toggle button:last-child{border-right:none}.view-toggle button:hover{background:var(--btn-hover)}.view-toggle button.active{background:var(--accent);color:#fff}.export{position:relative}.menu{position:absolute;right:0;top:calc(100% + 6px);background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);min-width:200px;padding:6px;display:none;z-index:50}.menu.open{display:block}.menu button{display:block;width:100%;text-align:left;font:inherit;font-size:13px;padding:8px 10px;border:none;background:transparent;color:var(--fg);border-radius:5px;cursor:pointer}.menu button:hover{background:var(--btn-hover)}.panes{display:flex;flex:1 1 auto;min-height:0}.editor-pane{flex:0 0 var(--split, 50%);min-width:0;display:flex;border-right:1px solid var(--border)}.gutter{flex:0 0 6px;cursor:col-resize;background:var(--border);transition:background .15s}.gutter:hover{background:var(--accent)}.preview-pane{flex:1 1 0;min-width:0;overflow:auto;background:var(--preview-bg)}.panes[data-view=editor] .gutter,.panes[data-view=editor] .preview-pane{display:none}.panes[data-view=editor] .editor-pane{flex:1 1 auto;border-right:none}.panes[data-view=preview] .gutter,.panes[data-view=preview] .editor-pane{display:none}.panes[data-view=preview] .preview-pane{flex:1 1 auto}#editor{flex:1;width:100%;border:none;outline:none;resize:none;padding:18px 22px;background:var(--editor-bg);color:var(--editor-fg);font-family:ui-monospace,Cascadia Code,Cascadia Mono,Consolas,Courier New,monospace;font-size:14px;line-height:1.7;-moz-tab-size:2;tab-size:2}.markdown-body{max-width:880px;margin:0 auto;padding:28px 36px 96px;font-size:16px;line-height:1.7;word-wrap:break-word}.markdown-body>*:first-child{margin-top:0}.markdown-body h1,.markdown-body h2,.markdown-body h3,.markdown-body h4,.markdown-body h5,.markdown-body h6{margin:1.6em 0 .6em;font-weight:600;line-height:1.3}.markdown-body h1{font-size:2em;padding-bottom:.3em;border-bottom:1px solid var(--border)}.markdown-body h2{font-size:1.5em;padding-bottom:.3em;border-bottom:1px solid var(--border)}.markdown-body h3{font-size:1.25em}.markdown-body h4{font-size:1em}.markdown-body h5{font-size:.875em}.markdown-body h6{font-size:.85em;color:var(--muted)}.markdown-body p{margin:0 0 1em}.markdown-body a{color:var(--accent);text-decoration:none}.markdown-body a:hover{text-decoration:underline}.markdown-body ul,.markdown-body ol{margin:0 0 1em;padding-left:2em}.markdown-body li{margin:.25em 0}.markdown-body li>input[type=checkbox]{margin-right:.5em}.markdown-body blockquote{margin:0 0 1em;padding:0 1em;color:var(--muted);border-left:.25em solid var(--quote-border)}.markdown-body code{font-family:ui-monospace,Cascadia Code,Consolas,monospace;font-size:.9em;background:var(--code-bg);padding:.2em .4em;border-radius:5px}.markdown-body pre{margin:0 0 1em;padding:14px 16px;background:var(--code-bg);border-radius:var(--radius);overflow:auto}.markdown-body pre code{background:transparent;padding:0;font-size:.875em;line-height:1.5;color:var(--code-fg)}.markdown-body table{border-collapse:collapse;margin:0 0 1em;display:block;width:max-content;max-width:100%;overflow:auto}.markdown-body th,.markdown-body td{border:1px solid var(--border);padding:6px 13px}.markdown-body tr:nth-child(2n){background:var(--table-stripe)}.markdown-body img{max-width:100%;border-radius:6px}.markdown-body hr{height:1px;border:none;background:var(--border);margin:1.6em 0}.hljs-comment,.hljs-quote{color:var(--tok-comment);font-style:italic}.hljs-keyword,.hljs-selector-tag,.hljs-literal,.hljs-section,.hljs-link{color:var(--tok-keyword)}.hljs-string,.hljs-regexp,.hljs-addition,.hljs-symbol,.hljs-bullet{color:var(--tok-string)}.hljs-number,.hljs-deletion{color:var(--tok-number)}.hljs-title,.hljs-name,.hljs-class .hljs-title,.hljs-type{color:var(--tok-title)}.hljs-built_in,.hljs-builtin-name,.hljs-variable,.hljs-template-variable{color:var(--tok-builtin)}.hljs-attr,.hljs-attribute,.hljs-property,.hljs-selector-attr,.hljs-selector-class,.hljs-selector-id{color:var(--tok-attr)}.hljs-meta,.hljs-comment.hljs-doctag{color:var(--tok-meta)}.hljs-emphasis{font-style:italic}.hljs-strong{font-weight:700}.dropzone{position:fixed;top:0;right:0;bottom:0;left:0;display:none;align-items:center;justify-content:center;background:#3b82f61f;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);z-index:100;pointer-events:none}.dropzone.active{display:flex}.dropzone-inner{padding:28px 44px;border:3px dashed var(--accent);border-radius:14px;background:var(--bg);font-size:18px;font-weight:600;color:var(--accent)}.toolbar{flex-wrap:wrap;row-gap:8px}.lang-select{font:inherit;font-size:13px;padding:6px 8px;border:1px solid var(--border);background:var(--btn-bg);color:var(--fg);border-radius:var(--radius);cursor:pointer}.modal{position:fixed;top:0;right:0;bottom:0;left:0;display:none;z-index:200}.modal.open{display:block}.modal-backdrop{position:absolute;top:0;right:0;bottom:0;left:0;background:#00000080}.modal-panel{position:absolute;left:50%;top:4%;transform:translate(-50%);width:min(1000px,92vw);max-height:92vh;display:flex;flex-direction:column;background:var(--bg);color:var(--fg);border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow);overflow:hidden}.modal-head{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;border-bottom:1px solid var(--border)}.modal-head h2{margin:0;font-size:18px}.modal-intro{margin:0;padding:12px 18px;color:var(--muted);font-size:13px;border-bottom:1px solid var(--border)}.modal-body{overflow:auto;padding:8px 18px 24px}.cs-section{margin-top:22px}.cs-section>h3{margin:0 0 10px;font-size:15px;color:var(--accent)}.cs-grid{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--border);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}.cs-col-head{background:var(--toolbar-bg);font-size:11px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);padding:6px 12px;font-weight:600}.cs-src,.cs-out{background:var(--bg);padding:12px;min-width:0}.cs-src{position:relative}.cs-src pre{margin:0;background:var(--code-bg);border-radius:6px;padding:10px 12px;overflow:auto}.cs-src pre code{font-family:ui-monospace,Consolas,monospace;font-size:12.5px;white-space:pre;color:var(--code-fg);background:none;padding:0}.cs-out.markdown-body{max-width:none;margin:0;padding:12px;font-size:14px}.cs-out>*:first-child{margin-top:0}.cs-out>*:last-child{margin-bottom:0}.cs-copy{position:absolute;top:16px;right:16px;font:inherit;font-size:11px;padding:3px 8px;border:1px solid var(--border);background:var(--btn-bg);color:var(--fg);border-radius:5px;cursor:pointer;opacity:.85;z-index:1}.cs-copy:hover{opacity:1;background:var(--btn-hover)}.cs-copy.done{background:var(--accent);color:#fff;border-color:var(--accent)}@media (max-width: 720px){.cs-grid{grid-template-columns:1fr}}@media print{.toolbar,.editor-pane,.gutter,.modal,.dropzone{display:none!important}#app{height:auto}.panes{display:block}.preview-pane{display:block!important;overflow:visible!important;background:#fff!important}.markdown-body{max-width:none;padding:0;color:#000}html,body{background:#fff}}