*{margin:0;padding:0;box-sizing:border-box}:root[data-theme=light]{--color-background: #ffffff;--color-surface: #f7f7f5;--color-surface-hover: #eeede9;--color-primary: #6b9e78;--color-primary-hover: #5a8a67;--color-secondary: #9ca3af;--color-text: #1a1a1a;--color-text-secondary: #6b7280;--color-border: #d1d5db;--color-error: #e07a5f;--color-success: #81b29a;--color-warning: #f2cc8f;--color-editor-background: #ffffff;--color-editor-gutter: #f7f7f5;--color-editor-selection: #d4e4d9;--color-editor-cursor: #1a1a1a;--shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, .08);--shadow-md: 0 4px 8px -2px rgba(0, 0, 0, .12);--shadow-lg: 0 10px 20px -5px rgba(0, 0, 0, .15)}:root[data-theme=dark]{--color-background: #1c1c1e;--color-surface: #2c2c2e;--color-surface-hover: #3a3a3c;--color-primary: #88c0a0;--color-primary-hover: #9ecdb0;--color-secondary: #9ca3af;--color-text: #e4e4e7;--color-text-secondary: #a1a1aa;--color-border: #38383a;--color-error: #e07a5f;--color-success: #81b29a;--color-warning: #f2cc8f;--color-editor-background: #1c1c1e;--color-editor-gutter: #2c2c2e;--color-editor-selection: #3d5a4c;--color-editor-cursor: #e4e4e7;--shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, .15);--shadow-md: 0 4px 8px -2px rgba(0, 0, 0, .2);--shadow-lg: 0 10px 20px -5px rgba(0, 0, 0, .25)}:root{--font-family-base: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif;--font-family-mono: "SF Mono", Monaco, "Cascadia Code", "Roboto Mono", Consolas, "Courier New", monospace;--font-size-xs: .75rem;--font-size-sm: .875rem;--font-size-base: 1rem;--font-size-lg: 1.125rem;--font-size-xl: 1.25rem;--font-size-2xl: 1.5rem;--font-size-3xl: 1.875rem;--font-weight-normal: 400;--font-weight-medium: 500;--font-weight-semibold: 600;--font-weight-bold: 700;--spacing-xs: .375rem;--spacing-sm: .625rem;--spacing-md: 1.25rem;--spacing-lg: 2rem;--spacing-xl: 3rem;--spacing-2xl: 4rem;--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem;--transition-fast: .2s cubic-bezier(.4, 0, .2, 1);--transition-base: .3s cubic-bezier(.4, 0, .2, 1);--transition-slow: .5s cubic-bezier(.4, 0, .2, 1);--z-dropdown: 1000;--z-modal: 1100;--z-tooltip: 1200}html{font-family:var(--font-family-base);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility}body{margin:0;padding:0;background-color:var(--color-background);color:var(--color-text);line-height:1.6;font-size:var(--font-size-base);min-height:100vh;overflow-x:hidden}#root{min-height:100vh;display:flex;flex-direction:column}h1,h2,h3,h4,h5,h6{margin:0;font-weight:var(--font-weight-semibold);line-height:1.2;color:var(--color-text)}p{margin:0}a{color:var(--color-primary);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-primary-hover)}button{font-family:inherit;font-size:inherit;line-height:inherit;cursor:pointer;border:none;background:none;padding:0;margin:0}input,textarea{font-family:inherit;font-size:inherit;line-height:inherit;color:inherit;border:none;background:none;padding:0;margin:0}input:focus,textarea:focus{outline:none}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--color-surface)}::-webkit-scrollbar-thumb{background:var(--color-border);border-radius:var(--radius-sm)}::-webkit-scrollbar-thumb:hover{background:var(--color-text-secondary)}::selection{background-color:var(--color-primary);color:#fff}.container{width:100%;max-width:1400px;margin:0 auto;padding:0 var(--spacing-md)}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border-width:0}pre code.hljs{display:block;overflow-x:auto;padding:1em}code.hljs{padding:3px 5px}/*!
  Theme: GitHub Dark
  Description: Dark theme as seen on github.com
  Author: github.com
  Maintainer: @Hirse
  Updated: 2021-05-15

  Outdated base version: https://github.com/primer/github-syntax-dark
  Current colors taken from GitHub's CSS
*/.hljs{color:#c9d1d9;background:#0d1117}.hljs-doctag,.hljs-keyword,.hljs-meta .hljs-keyword,.hljs-template-tag,.hljs-template-variable,.hljs-type,.hljs-variable.language_{color:#ff7b72}.hljs-title,.hljs-title.class_,.hljs-title.class_.inherited__,.hljs-title.function_{color:#d2a8ff}.hljs-attr,.hljs-attribute,.hljs-literal,.hljs-meta,.hljs-number,.hljs-operator,.hljs-variable,.hljs-selector-attr,.hljs-selector-class,.hljs-selector-id{color:#79c0ff}.hljs-regexp,.hljs-string,.hljs-meta .hljs-string{color:#a5d6ff}.hljs-built_in,.hljs-symbol{color:#ffa657}.hljs-comment,.hljs-code,.hljs-formula{color:#8b949e}.hljs-name,.hljs-quote,.hljs-selector-tag,.hljs-selector-pseudo{color:#7ee787}.hljs-subst{color:#c9d1d9}.hljs-section{color:#1f6feb;font-weight:700}.hljs-bullet{color:#f2cc60}.hljs-emphasis{color:#c9d1d9;font-style:italic}.hljs-strong{color:#c9d1d9;font-weight:700}.hljs-addition{color:#aff5b4;background-color:#033a16}.hljs-deletion{color:#ffdcd7;background-color:#67060c}.slash-command-menu{position:fixed;background:var(--color-background);border:1px solid var(--color-primary);border-radius:var(--radius-md);box-shadow:0 8px 24px #0003;min-width:320px;max-width:400px;max-height:400px;overflow:hidden;z-index:10000;animation:slideIn .15s ease-out}@keyframes slideIn{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}.slash-command-header{padding:10px 14px;background:var(--color-surface);border-bottom:1px solid var(--color-border);display:flex;justify-content:space-between;align-items:center;font-size:12px;font-weight:600;color:var(--color-text)}.slash-command-hint{font-size:10px;color:var(--color-text-secondary);font-weight:400}.slash-command-list{max-height:350px;overflow-y:auto}.slash-command-item{display:flex;align-items:center;gap:10px;padding:10px 14px;cursor:pointer;transition:background-color .1s;border-bottom:1px solid var(--color-border)}.slash-command-item:last-child{border-bottom:none}.slash-command-item:hover,.slash-command-item.selected{background:var(--color-surface-hover)}.slash-command-item.selected{border-left:3px solid var(--color-primary);padding-left:11px}.slash-command-icon{font-size:18px;width:24px;text-align:center;flex-shrink:0}.slash-command-info{flex:1;min-width:0}.slash-command-name{font-size:13px;font-weight:600;color:var(--color-primary);margin-bottom:2px}.slash-command-desc{font-size:11px;color:var(--color-text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.slash-command-list::-webkit-scrollbar{width:6px}.slash-command-list::-webkit-scrollbar-track{background:var(--color-background)}.slash-command-list::-webkit-scrollbar-thumb{background:var(--color-border);border-radius:3px}.slash-command-list::-webkit-scrollbar-thumb:hover{background:var(--color-primary)}.markdown-editor{height:100%;width:100%;background-color:var(--color-editor-background);overflow:hidden;position:relative;isolation:isolate;padding:var(--spacing-lg) 0}.editor-container{height:100%;width:100%;overflow:auto;position:relative}.editor-container .cm-editor{height:100%;background-color:var(--color-editor-background);color:var(--color-text)}.editor-container .cm-editor.cm-focused{outline:none}.markdown-editor *{-webkit-user-select:auto;user-select:auto}.markdown-editor.drag-over{outline:2px dashed var(--color-primary);outline-offset:-2px;background-color:#6b9e780d}.markdown-editor.drag-over:after{content:"Drop image here";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);padding:var(--spacing-md) var(--spacing-lg);background-color:var(--color-primary);color:#fff;border-radius:var(--radius-lg);font-size:var(--font-size-base);font-weight:var(--font-weight-medium);pointer-events:none;z-index:10;box-shadow:var(--shadow-lg)}.editor-container .cm-scroller{font-family:var(--font-family-mono)}.editor-container .cm-header{color:var(--color-primary);font-weight:var(--font-weight-bold)}.editor-container .cm-strong{font-weight:var(--font-weight-bold)}.editor-container .cm-em{font-style:italic}.editor-container .cm-link{color:var(--color-primary);text-decoration:underline}.editor-container .cm-monospace{font-family:var(--font-family-mono);background-color:var(--color-surface);padding:2px 4px;border-radius:var(--radius-sm)}.editor-container .cm-url{color:var(--color-text-secondary)}.editor-container .cm-quote{color:var(--color-text-secondary);font-style:italic}.markdown-preview{height:100%;width:100%;overflow-y:auto;overflow-x:hidden;background-color:var(--color-background);user-select:none;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none}.preview-content{max-width:680px;margin:0 auto;padding:var(--spacing-2xl) var(--spacing-xl);color:var(--color-text);line-height:1.8;user-select:text;-webkit-user-select:text;-moz-user-select:text;-ms-user-select:text}.preview-content h1,.preview-content h2,.preview-content h3,.preview-content h4,.preview-content h5,.preview-content h6{margin-top:var(--spacing-xl);margin-bottom:var(--spacing-md);font-weight:var(--font-weight-bold);line-height:1.3;color:var(--color-text)}.preview-content h1{font-size:var(--font-size-3xl);border-bottom:2px solid var(--color-border);padding-bottom:var(--spacing-md);margin-bottom:var(--spacing-lg);font-weight:var(--font-weight-semibold)}.preview-content h2{font-size:var(--font-size-2xl);border-bottom:1px solid var(--color-border);padding-bottom:var(--spacing-xs);margin-bottom:var(--spacing-md);font-weight:var(--font-weight-semibold)}.preview-content h3{font-size:var(--font-size-xl)}.preview-content h4{font-size:var(--font-size-lg)}.preview-content h5{font-size:var(--font-size-base)}.preview-content h6{font-size:var(--font-size-sm);color:var(--color-text-secondary)}.preview-content p{margin-bottom:var(--spacing-md)}.preview-content a{color:var(--color-primary);text-decoration:none;border-bottom:1px solid transparent;transition:all var(--transition-fast)}.preview-content a:hover{color:var(--color-primary-hover);border-bottom-color:var(--color-primary-hover)}.preview-content ul,.preview-content ol{margin:var(--spacing-md) 0;padding-left:var(--spacing-xl)}.preview-content li{margin-bottom:var(--spacing-sm)}.preview-content li>ul,.preview-content li>ol{margin-top:var(--spacing-sm);margin-bottom:0}.preview-content code{font-family:var(--font-family-mono);font-size:.9em;background-color:var(--color-surface);padding:2px 6px;border-radius:var(--radius-sm);color:var(--color-text)}.preview-content pre{background-color:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:var(--spacing-md);margin:var(--spacing-md) 0;overflow-x:auto}.preview-content pre code{background-color:transparent;padding:0;font-size:.875rem;line-height:1.5}.preview-content blockquote{margin:var(--spacing-md) 0;padding:var(--spacing-sm) var(--spacing-md);border-left:4px solid var(--color-primary);background-color:var(--color-surface);color:var(--color-text-secondary);font-style:italic}.preview-content blockquote p{margin-bottom:var(--spacing-sm)}.preview-content blockquote p:last-child{margin-bottom:0}.preview-content table{width:100%;border-collapse:collapse;margin:var(--spacing-md) 0;font-size:var(--font-size-sm)}.preview-content table th,.preview-content table td{padding:var(--spacing-sm) var(--spacing-md);border:1px solid var(--color-border);text-align:left}.preview-content table th{background-color:var(--color-surface);font-weight:var(--font-weight-semibold);color:var(--color-text)}.preview-content table tr:nth-child(2n){background-color:var(--color-surface)}.preview-content hr{margin:var(--spacing-xl) 0;border:none;border-top:2px solid var(--color-border)}.preview-content img{max-width:100%;height:auto;border-radius:var(--radius-md);margin:var(--spacing-md) 0;box-shadow:var(--shadow-md)}.preview-content input[type=checkbox]{margin-right:var(--spacing-sm)}.preview-content strong{font-weight:var(--font-weight-bold);color:var(--color-text)}.preview-content em{font-style:italic}.preview-content del{text-decoration:line-through;color:var(--color-text-secondary)}.preview-content>*:first-child{margin-top:0}.preview-content>*:last-child{margin-bottom:0}.preview-content .active-line{padding-left:calc(var(--spacing-md) - 4px);margin-left:-var(--spacing-md);position:relative}@keyframes blink-highlight{0%{background-color:#ffc80000;border-left:4px solid rgba(255,193,7,0);box-shadow:0 0 #ffc80000;border-radius:0}25%{background-color:#ffc8004d;border-left:4px solid #ffc107;box-shadow:0 0 20px #ffc80080;border-radius:var(--radius-sm)}50%{background-color:#ffc80059;border-left:4px solid #ffc107;box-shadow:0 0 24px #ffc80099;border-radius:var(--radius-sm)}75%{background-color:#ffc80033;border-left:4px solid #ffc107;box-shadow:0 0 12px #ffc8004d;border-radius:var(--radius-sm)}to{background-color:#ffc80000;border-left:4px solid rgba(255,193,7,0);box-shadow:0 0 #ffc80000;border-radius:0}}.preview-content .active-line.blink{animation:blink-highlight 1s ease-in-out forwards}@keyframes blink-highlight-dark{0%{background-color:#ffc80000;border-left:4px solid rgba(255,212,59,0);box-shadow:0 0 #ffc80000;border-radius:0}25%{background-color:#ffc80059;border-left:4px solid #ffd43b;box-shadow:0 0 24px #ffc80099;border-radius:var(--radius-sm)}50%{background-color:#ffc80066;border-left:4px solid #ffd43b;box-shadow:0 0 28px #ffc800b3;border-radius:var(--radius-sm)}75%{background-color:#ffc80040;border-left:4px solid #ffd43b;box-shadow:0 0 16px #ffc80066;border-radius:var(--radius-sm)}to{background-color:#ffc80000;border-left:4px solid rgba(255,212,59,0);box-shadow:0 0 #ffc80000;border-radius:0}}:root[data-theme=dark] .preview-content .active-line.blink{animation:blink-highlight-dark 1s ease-in-out forwards}.preview-content .active-line h1,.preview-content .active-line h2,.preview-content .active-line h3,.preview-content .active-line h4,.preview-content .active-line h5,.preview-content .active-line h6,.preview-content .active-line p,.preview-content .active-line li,.preview-content .active-line blockquote,.preview-content .active-line pre{position:relative}.preview-content .active-line.pre,.preview-content .active-line.blockquote{margin-left:calc(-var(--spacing-md) - 4px);padding-left:var(--spacing-md)}.preview-content .mermaid-diagram{margin:var(--spacing-lg) 0;padding:var(--spacing-md);background-color:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);overflow-x:auto;text-align:center}.preview-content .mermaid-diagram svg{max-width:100%;height:auto}.preview-content .mermaid-error{margin:var(--spacing-lg) 0;padding:var(--spacing-md);background-color:#e07a5f1a;border:1px solid var(--color-error);border-radius:var(--radius-md)}.preview-content .mermaid-error .error-title{font-size:var(--font-size-base);font-weight:var(--font-weight-semibold);color:var(--color-error);margin-bottom:var(--spacing-xs)}.preview-content .mermaid-error .error-message{font-size:var(--font-size-sm);color:var(--color-text-secondary);margin-bottom:var(--spacing-sm)}.preview-content .mermaid-error .error-code{background-color:var(--color-surface);padding:var(--spacing-sm);border-radius:var(--radius-sm);font-size:var(--font-size-sm);overflow-x:auto;margin:0}.recent-files-dropdown{min-width:280px;max-width:350px}.recent-empty{padding:var(--spacing-md);text-align:center;color:var(--color-text-secondary);font-size:var(--font-size-sm);font-style:italic}.recent-file-item{display:flex;flex-direction:column;align-items:flex-start;gap:var(--spacing-xs);padding:var(--spacing-sm) var(--spacing-md);width:100%;text-align:left;background-color:transparent;border:none;cursor:pointer;transition:background-color var(--transition-fast)}.recent-file-item:hover{background-color:var(--color-surface-hover)}.recent-file-name{font-size:var(--font-size-sm);font-weight:var(--font-weight-medium);color:var(--color-text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:100%}.recent-file-time{font-size:.7rem;color:var(--color-text-secondary)}.recent-divider{height:1px;background-color:var(--color-border);margin:var(--spacing-xs) 0}.recent-clear{width:100%;padding:var(--spacing-sm) var(--spacing-md);text-align:center;background-color:transparent;border:none;color:var(--color-error);font-size:var(--font-size-sm);cursor:pointer;transition:background-color var(--transition-fast)}.recent-clear:hover{background-color:#e07a5f1a}.toolbar{display:flex;align-items:center;gap:var(--spacing-md);padding:var(--spacing-sm) var(--spacing-lg);background-color:var(--color-surface);border-bottom:1px solid var(--color-border);flex-wrap:wrap;min-height:48px}.toolbar-group{display:flex;align-items:center;gap:var(--spacing-xs)}.toolbar-button{display:flex;align-items:center;justify-content:center;min-width:32px;height:32px;padding:var(--spacing-xs) var(--spacing-sm);background-color:transparent;color:var(--color-text);border:1px solid transparent;border-radius:var(--radius-md);font-size:var(--font-size-sm);font-weight:var(--font-weight-medium);cursor:pointer;transition:all var(--transition-fast);white-space:nowrap}.toolbar-button:hover{background-color:var(--color-surface-hover);border-color:var(--color-border);box-shadow:var(--shadow-sm)}.toolbar-button:active{transform:scale(.97)}.toolbar-button:disabled{opacity:.5;cursor:not-allowed}.toolbar-button.active{background-color:var(--color-primary);color:#fff;border-color:var(--color-primary);opacity:1;box-shadow:0 0 0 3px #7c98851a}.toolbar-button.active:hover{background-color:var(--color-primary-hover);border-color:var(--color-primary-hover);box-shadow:0 0 0 3px #7c988526}.toolbar-button strong,.toolbar-button em,.toolbar-button s{font-size:var(--font-size-base)}.toolbar-divider{width:1px;height:20px;background-color:var(--color-border);margin:0 var(--spacing-sm);opacity:.3}.toolbar-spacer{flex:1}.theme-toggle{font-size:var(--font-size-2xl);font-weight:var(--font-weight-normal)}.dropdown{position:relative;display:inline-block}.dropdown-content{position:absolute;right:0;top:100%;margin-top:var(--spacing-xs);background-color:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);min-width:200px;z-index:var(--z-dropdown);overflow:visible}.dropdown-content.open{display:block}.dropdown-content button{display:block;width:100%;padding:var(--spacing-sm) var(--spacing-md);text-align:left;background-color:transparent;color:var(--color-text);border:none;cursor:pointer;transition:background-color var(--transition-fast);font-size:var(--font-size-sm)}.dropdown-content button:hover{background-color:var(--color-surface-hover)}.dropdown-content button:not(:last-child){border-bottom:1px solid var(--color-border)}.dropdown-divider{height:1px;background-color:var(--color-border);margin:var(--spacing-xs) 0}.dropdown-item-wrapper{position:relative;display:block}.dropdown-item-wrapper>button{display:block;width:100%;padding:var(--spacing-sm) var(--spacing-md);text-align:left;background-color:transparent;color:var(--color-text);border:none;cursor:pointer;transition:background-color var(--transition-fast);font-size:var(--font-size-sm);border-bottom:1px solid var(--color-border)}.dropdown-item-wrapper>button:hover{background-color:var(--color-surface-hover)}.dropdown-submenu{position:absolute;left:calc(100% + 4px);top:0;background-color:var(--color-background);border:1px solid var(--color-border);border-radius:var(--radius-md);box-shadow:0 4px 12px #00000026;min-width:260px;max-height:400px;overflow-y:auto;z-index:99999;display:block}.dropdown-submenu button{display:block;width:100%;padding:var(--spacing-sm) var(--spacing-md);text-align:left;background-color:transparent;color:var(--color-text);border:none;cursor:pointer;transition:background-color var(--transition-fast);font-size:var(--font-size-sm);white-space:nowrap}.dropdown-submenu button:hover{background-color:var(--color-surface-hover)}.dropdown-submenu button:not(:last-child){border-bottom:1px solid var(--color-border)}@media(max-width:768px){.toolbar{gap:var(--spacing-xs);padding:var(--spacing-xs) var(--spacing-sm)}.toolbar-button{min-width:32px;height:32px;padding:var(--spacing-xs);font-size:.75rem}.toolbar-group{gap:2px}.toolbar-divider{margin:0 2px}}.help-overlay{position:fixed;inset:0;background-color:#000000b3;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:var(--z-modal);animation:fadeIn .2s ease-out}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.help-modal{background-color:var(--color-background);border-radius:var(--radius-lg);box-shadow:0 20px 60px #0000004d;max-width:900px;width:90%;max-height:85vh;display:flex;flex-direction:column;animation:slideUp .3s ease-out}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.help-header{display:flex;justify-content:space-between;align-items:center;padding:var(--spacing-lg) var(--spacing-xl);border-bottom:1px solid var(--color-border)}.help-header h2{margin:0;font-size:var(--font-size-2xl);color:var(--color-text)}.close-button{background:none;border:none;font-size:24px;color:var(--color-text-secondary);cursor:pointer;padding:var(--spacing-xs);line-height:1;transition:color var(--transition-fast)}.close-button:hover{color:var(--color-text)}.help-tabs{display:flex;gap:0;padding:0 var(--spacing-xl);border-bottom:2px solid var(--color-border);background:var(--color-surface)}.help-tab{padding:var(--spacing-md) var(--spacing-lg);background:none;border:none;color:var(--color-text-secondary);font-size:var(--font-size-sm);font-weight:var(--font-weight-medium);cursor:pointer;position:relative;transition:all var(--transition-fast);border-bottom:2px solid transparent;margin-bottom:-2px}.help-tab:hover{color:var(--color-text);background:var(--color-surface-hover)}.help-tab.active{color:var(--color-primary);border-bottom-color:var(--color-primary);font-weight:var(--font-weight-semibold)}.help-content{flex:1;overflow-y:auto;padding:var(--spacing-xl)}.help-section h3{margin-top:0;margin-bottom:var(--spacing-md);color:var(--color-text);font-size:var(--font-size-xl)}.help-section h4{margin-top:var(--spacing-lg);margin-bottom:var(--spacing-sm);color:var(--color-primary);font-size:var(--font-size-lg)}.help-section p{line-height:1.6;color:var(--color-text);margin-bottom:var(--spacing-md)}.help-section ul,.help-section ol{line-height:1.8;color:var(--color-text);margin-bottom:var(--spacing-md)}.help-section li{margin-bottom:var(--spacing-xs)}.help-section pre{background:var(--color-surface);padding:var(--spacing-md);border-radius:var(--radius-sm);border:1px solid var(--color-border);overflow-x:auto;font-size:var(--font-size-sm);line-height:1.5;margin:var(--spacing-md) 0}.help-section code{background:var(--color-surface);padding:2px 6px;border-radius:3px;font-size:var(--font-size-sm);color:var(--color-primary)}.help-section kbd{background:var(--color-surface);padding:3px 8px;border-radius:4px;border:1px solid var(--color-border);font-size:var(--font-size-sm);font-family:monospace;box-shadow:0 1px 2px #0000001a}.shortcuts-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:var(--spacing-sm)}.shortcut-item{display:flex;justify-content:space-between;align-items:center;padding:var(--spacing-sm) var(--spacing-md);background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-sm)}.shortcut-description{font-size:var(--font-size-sm);color:var(--color-text)}.shortcut-keys kbd{margin-left:var(--spacing-xs)}.command-list{display:flex;flex-direction:column;gap:var(--spacing-sm);margin-bottom:var(--spacing-lg)}.command-item{display:flex;flex-direction:column;gap:4px;padding:var(--spacing-sm) var(--spacing-md);background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-sm)}.command-item code{font-weight:var(--font-weight-semibold);color:var(--color-primary)}.command-aliases{font-size:var(--font-size-xs);color:var(--color-text-secondary)}.template-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:var(--spacing-md)}.template-card{padding:var(--spacing-md);background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);transition:all var(--transition-fast)}.template-card:hover{border-color:var(--color-primary);box-shadow:0 4px 12px #6b9e781a}.template-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--spacing-xs)}.template-header h4{margin:0;font-size:var(--font-size-base);color:var(--color-text)}.template-category{font-size:var(--font-size-xs);padding:2px 8px;background:var(--color-primary);color:#fff;border-radius:12px;text-transform:uppercase;font-weight:var(--font-weight-semibold)}.template-card p{margin:var(--spacing-xs) 0;font-size:var(--font-size-sm);color:var(--color-text-secondary)}.template-command{display:inline-block;margin-top:var(--spacing-xs);font-size:var(--font-size-xs)}.feature-block{margin-bottom:var(--spacing-xl);padding-bottom:var(--spacing-lg);border-bottom:1px solid var(--color-border)}.feature-block:last-child{border-bottom:none}.help-note{background:var(--color-surface);padding:var(--spacing-sm) var(--spacing-md);border-left:3px solid var(--color-primary);border-radius:var(--radius-sm);font-size:var(--font-size-sm);color:var(--color-text-secondary)}.help-content::-webkit-scrollbar{width:8px}.help-content::-webkit-scrollbar-track{background:var(--color-background)}.help-content::-webkit-scrollbar-thumb{background:var(--color-border);border-radius:4px}.help-content::-webkit-scrollbar-thumb:hover{background:var(--color-primary)}@media(max-width:768px){.help-modal{width:95%;max-height:90vh}.help-tabs{overflow-x:auto;scrollbar-width:thin}.help-tab{white-space:nowrap;font-size:var(--font-size-xs);padding:var(--spacing-sm) var(--spacing-md)}.template-grid,.shortcuts-grid{grid-template-columns:1fr}}.toc-sidebar{position:fixed;top:0;right:-320px;width:300px;height:100vh;background-color:var(--color-surface);border-left:1px solid var(--color-border);box-shadow:var(--shadow-lg);z-index:900;transition:right var(--transition-base);display:flex;flex-direction:column}.toc-sidebar.open{right:0}.toc-header{display:flex;justify-content:space-between;align-items:center;padding:var(--spacing-md) var(--spacing-lg);border-bottom:1px solid var(--color-border);background-color:var(--color-background)}.toc-header h3{margin:0;font-size:var(--font-size-base);font-weight:var(--font-weight-semibold);color:var(--color-text)}.toc-close{display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:var(--radius-md);background-color:transparent;color:var(--color-text-secondary);cursor:pointer;transition:all var(--transition-fast);border:none;font-size:var(--font-size-lg)}.toc-close:hover{background-color:var(--color-surface-hover);color:var(--color-text)}.toc-content{flex:1;overflow-y:auto;padding:var(--spacing-md)}.toc-empty{color:var(--color-text-secondary);font-size:var(--font-size-sm);text-align:center;padding:var(--spacing-lg);font-style:italic}.toc-nav{display:flex;flex-direction:column;gap:var(--spacing-xs)}.toc-item{display:block;width:100%;text-align:left;padding:var(--spacing-xs) var(--spacing-sm);background-color:transparent;color:var(--color-text);border:none;border-left:2px solid transparent;border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition-fast);font-size:var(--font-size-sm);line-height:1.4}.toc-item:hover{background-color:var(--color-surface-hover);border-left-color:var(--color-primary)}.toc-text{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.toc-level-1{padding-left:var(--spacing-sm);font-weight:var(--font-weight-semibold)}.toc-level-2{padding-left:calc(var(--spacing-sm) + 12px);font-weight:var(--font-weight-medium)}.toc-level-3{padding-left:calc(var(--spacing-sm) + 24px);font-size:.8rem}.toc-level-4{padding-left:calc(var(--spacing-sm) + 36px);font-size:.8rem;opacity:.9}.toc-level-5{padding-left:calc(var(--spacing-sm) + 48px);font-size:.75rem;opacity:.8}.toc-level-6{padding-left:calc(var(--spacing-sm) + 60px);font-size:.75rem;opacity:.7}@media(max-width:768px){.toc-sidebar{width:100%;right:-100%}}.metadata-panel{position:fixed;top:60px;right:20px;width:320px;max-height:calc(100vh - 100px);background:var(--card-background);border:1px solid var(--border-color);border-radius:8px;box-shadow:0 4px 12px #00000026;overflow:hidden;z-index:1000;animation:slideInRight .3s ease-out}@keyframes slideInRight{0%{transform:translate(100%);opacity:0}to{transform:translate(0);opacity:1}}.metadata-header{display:flex;justify-content:space-between;align-items:center;padding:14px 16px;background:var(--color-primary);color:#fff;border-bottom:1px solid var(--color-border)}.metadata-title-group{display:flex;flex-direction:column;gap:2px}.metadata-title{font-size:15px;font-weight:600;display:flex;align-items:center;gap:6px}.metadata-subtitle{font-size:11px;opacity:.9;font-weight:400}.metadata-info{padding:12px 16px;background:var(--color-surface);border-bottom:1px solid var(--color-border)}.metadata-info p{margin:0;font-size:12px;line-height:1.5;color:var(--color-text-secondary)}.metadata-close{background:transparent;border:none;color:#fff;font-size:18px;cursor:pointer;padding:4px 8px;border-radius:4px;transition:background-color .2s}.metadata-close:hover{background:#fff3}.metadata-content{padding:12px;max-height:calc(100vh - 160px);overflow-y:auto}.metadata-field{margin-bottom:12px;padding:10px;background:var(--background-color);border:1px solid var(--border-color);border-radius:6px;transition:all .2s}.metadata-field:hover{border-color:var(--primary-color);box-shadow:0 2px 6px #6b9e781a}.metadata-field-label{display:flex;align-items:center;gap:6px;margin-bottom:6px}.metadata-field-label{font-size:11px;font-weight:600;color:var(--color-primary);text-transform:uppercase;letter-spacing:.5px;margin-bottom:4px}.metadata-field-value{font-size:13px;color:var(--color-text);word-break:break-word;white-space:pre-wrap;line-height:1.5}.metadata-tag{display:inline-block;padding:2px 8px;margin:2px 4px 2px 0;background-color:var(--color-surface);border:1px solid var(--color-border);border-radius:12px;font-size:11px;color:var(--color-text)}.metadata-json{background-color:var(--color-surface);padding:8px;border-radius:4px;font-size:11px;overflow-x:auto;margin:0}.metadata-empty{color:var(--color-text-secondary);font-style:italic}.metadata-content::-webkit-scrollbar{width:6px}.metadata-content::-webkit-scrollbar-track{background:var(--background-color);border-radius:3px}.metadata-content::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:3px}.metadata-content::-webkit-scrollbar-thumb:hover{background:var(--primary-color)}@media(max-width:768px){.metadata-panel{right:10px;width:280px;top:50px}}.app{display:flex;flex-direction:column;height:100vh;overflow:hidden;background-color:var(--color-background)}.app-header{display:flex;justify-content:space-between;align-items:center;padding:var(--spacing-sm) var(--spacing-lg);background-color:var(--color-surface);border-bottom:1px solid var(--color-border);min-height:48px}.app-title-group{display:flex;align-items:center;gap:var(--spacing-md)}.app-title{font-size:var(--font-size-base);font-weight:var(--font-weight-medium);color:var(--color-text-secondary);margin:0;letter-spacing:.02em;text-transform:uppercase;font-size:.7rem}.app-filename{font-size:var(--font-size-base);font-weight:var(--font-weight-semibold);color:var(--color-text);padding:var(--spacing-xs) var(--spacing-sm);background-color:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast)}.app-filename:hover{background-color:var(--color-surface-hover);border-color:var(--color-primary)}.app-filename-input{font-size:var(--font-size-base);font-weight:var(--font-weight-semibold);color:var(--color-text);padding:var(--spacing-xs) var(--spacing-sm);background-color:var(--color-background);border:2px solid var(--color-primary);border-radius:var(--radius-md);outline:none;min-width:200px;font-family:inherit}.app-filename-input:focus{border-color:var(--color-primary-hover);box-shadow:0 0 0 3px #6b9e781a}.app-stats{display:inline-flex;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-xs) var(--spacing-sm);background-color:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);font-size:.75rem;color:var(--color-text-secondary)}.stat-item{font-weight:var(--font-weight-normal);font-size:.75rem}.stat-separator{color:var(--color-border);opacity:.5}.export-status{font-size:.75rem;color:var(--color-primary);font-weight:var(--font-weight-medium);margin-left:var(--spacing-sm);padding:var(--spacing-xs) var(--spacing-sm);background-color:var(--color-surface);border:1px solid var(--color-primary);border-radius:var(--radius-md);animation:pulse 1s ease-in-out infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.6}}.app-main{display:flex;flex:1;overflow:hidden;min-height:0}.editor-pane,.preview-pane{display:flex;flex-direction:column;flex:1;min-width:0;overflow:hidden}.editor-pane{border-right:1px solid var(--color-border);position:relative;background-color:var(--color-background)}.pane-header{display:none}.pane-title{font-size:.65rem;font-weight:var(--font-weight-normal);color:var(--color-text-secondary);text-transform:uppercase;letter-spacing:.1em;margin:0;opacity:.6}.editor-pane>*:last-child,.preview-pane>*:last-child{flex:1;overflow:auto;min-height:0}@media(max-width:1024px){.app-stats{font-size:var(--font-size-xs);gap:var(--spacing-xs)}.stat-item{display:none}.stat-item:first-child{display:inline}}@media(max-width:768px){.app-header{padding:var(--spacing-sm) var(--spacing-md)}.app-title{font-size:var(--font-size-lg)}.app-main{flex-direction:column}.editor-pane{border-right:none;border-bottom:1px solid var(--color-border);max-height:50%}.preview-pane{max-height:50%}.pane-header{padding:var(--spacing-xs) var(--spacing-sm)}.pane-title{font-size:.65rem}}.loading{display:flex;align-items:center;justify-content:center;height:100%;color:var(--color-text-secondary)}.error{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;color:var(--color-error);padding:var(--spacing-lg);text-align:center}.error-message{margin-top:var(--spacing-md);font-size:var(--font-size-sm)}.app.focus-mode .editor-pane{border-right:none}.app.focus-mode .markdown-editor{max-width:800px;margin:0 auto;padding:var(--spacing-2xl)}.app.focus-mode{background-color:var(--color-background)}.app.focus-mode:after{content:"Press Esc to exit focus mode";position:fixed;bottom:var(--spacing-md);right:var(--spacing-md);padding:var(--spacing-xs) var(--spacing-md);background-color:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);font-size:var(--font-size-sm);color:var(--color-text-secondary);opacity:.7;pointer-events:none;z-index:1000}.error-boundary{display:flex;align-items:center;justify-content:center;min-height:100vh;background:var(--color-background);padding:var(--spacing-xl)}.error-content{max-width:600px;text-align:center}.error-content h1{color:var(--color-text);font-size:var(--font-size-3xl);margin-bottom:var(--spacing-md)}.error-message{color:var(--color-text-secondary);font-size:var(--font-size-lg);line-height:1.6;margin-bottom:var(--spacing-xl)}.error-details{text-align:left;margin:var(--spacing-lg) 0;padding:var(--spacing-md);background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md)}.error-details summary{cursor:pointer;font-weight:var(--font-weight-semibold);color:var(--color-text);padding:var(--spacing-xs)}.error-details pre{margin-top:var(--spacing-sm);padding:var(--spacing-sm);background:var(--color-background);border-radius:var(--radius-sm);overflow-x:auto;font-size:var(--font-size-sm);color:var(--color-error, #d32f2f)}.error-actions{display:flex;gap:var(--spacing-md);justify-content:center;margin:var(--spacing-xl) 0}.error-button{padding:var(--spacing-md) var(--spacing-xl);border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface);color:var(--color-text);font-size:var(--font-size-base);cursor:pointer;transition:all var(--transition-fast)}.error-button:hover{background:var(--color-surface-hover);border-color:var(--color-primary)}.error-button.primary{background:var(--color-primary);color:#fff;border-color:var(--color-primary)}.error-button.primary:hover{opacity:.9}.error-help{font-size:var(--font-size-sm);color:var(--color-text-secondary);margin-top:var(--spacing-lg)}.error-help a{color:var(--color-primary);text-decoration:none}.error-help a:hover{text-decoration:underline}
