@import "https://fonts.googleapis.com/css2?family=Fira+Code:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap";
:root{--sidebar-width:340px;--sidebar-collapsed-width:56px;--content-padding:2rem;--card-padding:1.5rem;--gap-sm:.5rem;--gap-md:1rem;--gap-lg:1.5rem;--gap-xl:2rem;--radius-xs:2px;--radius-2xs:3px;--radius-tag:4px;--radius-sm:6px;--radius-md:10px;--radius-lg:16px;--radius-xl:20px;--transition-fast:.15s ease;--transition-normal:.25s ease;--transition-slow:.4s ease;--font-sans:"Avenir Next","Avenir",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;--font-mono:"Fira Code",monospace;--font-mono-code:"JetBrains Mono",monospace;--font-size-4xs:.5rem;--font-size-3xs:.55rem;--font-size-xs:.65rem;--font-size-2xs:.7rem;--font-size-sm:.8rem;--font-size-2sm:.85rem;--font-size-md:.9rem;--font-size-2md:.95rem;--font-size-base:1rem;--font-size-lg:1.1rem;--font-size-2lg:1.15rem;--font-size-xl:1.25rem;--font-size-2xl:2rem;--font-weight-normal:400;--font-weight-medium:500;--font-weight-semibold:600;--font-weight-bold:700;--line-height-tight:1.25;--line-height-normal:1.6;--line-height-relaxed:1.75;--accent-blue:#3b82f6;--accent-green:#22c55e;--accent-purple:#a855f7;--accent-orange:#f97316;--accent-red:#ef4444;--accent-yellow:#eab308}[data-theme=dark]{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--bg-primary:#0f0f0f;--bg-secondary:#1a1a1a;--bg-tertiary:#242424;--bg-card:#1e1e1e;--bg-hover:#2a2a2a;--text-primary:#fff;--text-secondary:#a0a0a0;--text-muted:#666;--border-color:#333;--border-subtle:#2a2a2a;--shadow-sm:0 1px 4px #0000001a;--shadow-md:0 2px 8px #00000026;--shadow-lg:0 4px 24px #00000040;--shadow-color:#0003;--overlay-bg:#0009;--code-bg:#151515;--code-fg:#e5e5e5;--scrollbar-track:#242424;--scrollbar-thumb:#444;--diff-removed-bg:#ef444459;--diff-removed-color:#f87171;--diff-added-bg:#22c55e4d;--diff-added-color:#6ee7b7;--gradient-end:#1a1a1afa}[data-theme=light]{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--bg-primary:#f2f2f2;--bg-secondary:#e8e8e8;--bg-tertiary:#dedede;--bg-card:#f8f8f8;--bg-hover:#e0e0e0;--text-primary:#1a1a2e;--text-secondary:#4a5568;--text-muted:#7a8494;--border-color:#d0d0d0;--border-subtle:#e0e0e0;--shadow-sm:0 1px 3px #0000000f;--shadow-md:0 2px 8px #00000014;--shadow-lg:0 4px 24px #0000001a;--shadow-color:#0000000f;--overlay-bg:#0000004d;--code-bg:#1e1e1e;--code-fg:#e5e5e5;--scrollbar-track:#dedede;--scrollbar-thumb:#b0b0b0;--diff-removed-bg:#ef444440;--diff-removed-color:#f87171;--diff-added-bg:#22c55e40;--diff-added-color:#4ade80;--gradient-end:#f8f8f8fa}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;font-size:18px}code,h1,h2,h3,h4{font-family:var(--font-mono-code)}body{font-family:var(--font-sans);background:var(--bg-primary);color:var(--text-primary);min-height:100vh;line-height:1.6;display:flex}::selection{background:var(--accent-blue);color:#fff}[data-theme=dark] .sidebar-header img,[data-theme=dark] .nav-section-header img{filter:invert()}.ProseMirror-selectednode{outline-color:var(--accent-blue)!important}li.ProseMirror-selectednode:after{border-color:var(--accent-blue)!important}.sidebar{width:var(--sidebar-width);background:var(--bg-card);border-right:1px solid var(--border-color);z-index:100;flex-direction:column;height:100dvh;transition:transform .3s cubic-bezier(.4,0,.2,1),box-shadow .3s;display:flex;position:fixed;top:0;left:0;box-shadow:2px 0 12px #0000000a}[data-theme=dark] .sidebar{box-shadow:2px 0 12px #0003}@media (min-width:769px){.sidebar.sidebar-collapsed{width:var(--sidebar-collapsed-width)}.sidebar.sidebar-collapsed .sidebar-header{flex-direction:column;align-items:center;padding:.75rem}.sidebar.sidebar-collapsed .sidebar-header-content{display:none}.sidebar.sidebar-collapsed .sidebar-collapse-btn{margin:0 auto}.sidebar.sidebar-collapsed .nav-list{padding:.5rem 0}.sidebar.sidebar-collapsed .nav-item{justify-content:center;padding:.75rem}.sidebar.sidebar-collapsed .nav-link{justify-content:center}.sidebar.sidebar-collapsed .nav-link span:not(.nav-icon),.sidebar.sidebar-collapsed .nav-item>span:not(.nav-icon){display:none}.sidebar.sidebar-collapsed .sidebar-footer{padding:.75rem}.sidebar.sidebar-collapsed .theme-toggle-btn{justify-content:center;padding:.75rem}.sidebar.sidebar-collapsed .theme-toggle-btn span,.sidebar.sidebar-collapsed .prosemirror-back-link{display:none}.sidebar.sidebar-collapsed .nav-section-header{box-sizing:border-box;border-radius:0;justify-content:center;height:44px;min-height:44px;margin:0;padding:.75rem}.sidebar.sidebar-collapsed .nav-section-header span:not(.nav-icon){display:none}.sidebar.sidebar-collapsed .nav-section-header .nav-icon{font-size:var(--font-size-xl);justify-content:center;align-items:center;line-height:1;display:flex}.sidebar.sidebar-collapsed .nav-section-header .nav-icon-img img{width:20px;height:20px;display:block}.sidebar-collapsed-logo{justify-content:center;align-items:center;display:flex}.sidebar.sidebar-collapsed .nav-item{border-radius:0;margin:0}.sidebar.sidebar-collapsed .nav-sublist,.sidebar-toggle.sidebar-closed{display:none}}.sidebar-header{border-bottom:1px solid 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h1{font-size:var(--font-size-xl);font-weight:var(--font-weight-bold);margin-bottom:.25rem}.sidebar-header .subtitle{font-size:var(--font-size-2sm);color:var(--text-secondary)}.nav-list{flex:1;padding:1rem 0;list-style:none}.nav-item{border-radius:var(--radius-md);cursor:pointer;color:var(--text-secondary);border-left:3px solid #0000;align-items:center;gap:.75rem;margin:0 .5rem;padding:.75rem 1.25rem;transition:all .2s cubic-bezier(.4,0,.2,1);display:flex}.nav-item:hover{background:var(--bg-hover);color:var(--text-primary)}.nav-item.active{background:color-mix(in srgb,var(--accent-purple)12%,transparent);color:var(--accent-purple);border-left-color:var(--accent-purple)}.nav-icon{font-size:var(--font-size-xl);flex-shrink:0;align-items:center;display:flex}.nav-icon svg{color:inherit}.nav-icon-img,.nav-icon img{flex-shrink:0;display:block}.nav-link{width:100%;font:inherit;color:inherit;text-align:left;cursor:pointer;background:0 0;border:none;flex:1;align-items:center;gap:.75rem;padding:0;text-decoration:none;display:flex}.unified-nav-sections{flex:1;overflow-y:auto}.nav-section{border-bottom:1px solid var(--border-color)}.nav-section:last-of-type{border-bottom:none}.nav-section-header{border-radius:0 var(--radius-md)var(--radius-md)0;color:var(--text-secondary);transition:all var(--transition-fast);border-left:3px solid #0000;align-items:center;gap:.75rem;margin:0 .5rem;padding:.875rem 1.25rem;text-decoration:none;display:flex}.nav-section-header:hover{background:var(--bg-hover);color:var(--text-primary)}.nav-section-header.active{background:color-mix(in srgb,var(--accent-purple)10%,transparent);color:var(--accent-purple);border-left-color:var(--accent-purple)}.nav-sublist{padding:.25rem 0 .75rem}.nav-sublist .nav-item{border-left:none;padding:0;position:relative}.nav-sublist .nav-item .nav-link{align-items:center;width:100%;padding:.6rem 1.5rem .6rem 2rem;display:flex}.nav-sublist .nav-item .nav-icon{font-size:var(--font-size-lg)}.nav-sublist .nav-item .nav-link span:not(.nav-icon):not(.nav-badge){font-size:var(--font-size-md)}.nav-badge{font-size:var(--font-size-3xs);font-weight:var(--font-weight-bold);letter-spacing:.05em;text-transform:uppercase;border-radius:var(--radius-xl);background:linear-gradient(135deg,color-mix(in srgb,var(--accent-orange)20%,transparent),color-mix(in srgb,var(--accent-orange)8%,transparent));color:var(--accent-orange);border:1px solid color-mix(in srgb,var(--accent-orange)25%,transparent);margin-left:auto;padding:.15rem .45rem;line-height:1}.nav-sublist .nav-item.active{background:color-mix(in srgb,var(--accent-purple)15%,transparent);color:var(--accent-purple);border-left-color:var(--accent-purple)}.nav-sublist .nav-item.active .nav-link{color:inherit}.nav-sublist .nav-item.active:before{content:"";background:var(--accent-purple);border-radius:0 2px 2px 0;width:3px;height:1rem;position:absolute;top:50%;left:.75rem;transform:translateY(-50%)}.sidebar-footer{border-top:1px solid var(--border-color);padding:1rem 1.5rem}.sidebar-footer .tip{font-size:var(--font-size-sm);color:var(--accent-blue);background:color-mix(in srgb,var(--accent-blue)10%,transparent);border-radius:var(--radius-sm);text-align:center;padding:.75rem}.theme-toggle-btn{border:1px solid var(--border-color);border-radius:var(--radius-md);background:var(--bg-tertiary);width:100%;color:var(--text-secondary);font-size:var(--font-size-2sm);cursor:pointer;transition:all var(--transition-fast);align-items:center;gap:.6rem;padding:.75rem 1rem;font-family:inherit;display:flex}.theme-toggle-btn:hover{background:var(--bg-hover);color:var(--text-primary);border-color:var(--text-muted)}.theme-toggle-btn svg{flex-shrink:0;width:20px;height:20px}.floating-theme-toggle{z-index:10000;border:1px solid var(--border-color);background:var(--bg-card);width:44px;height:44px;color:var(--text-secondary);cursor:pointer;box-shadow:var(--shadow-md);transition:all var(--transition-fast);border-radius:50%;justify-content:center;align-items:center;display:flex;position:fixed;top:1rem;right:1rem}.floating-theme-toggle:hover{background:var(--bg-hover);color:var(--text-primary);border-color:var(--text-muted);box-shadow:var(--shadow-lg)}.floating-back-link{z-index:10000;border:1px solid var(--border-color);border-radius:var(--radius-xl);background:var(--bg-card);color:var(--text-secondary);font-size:var(--font-size-2sm);font-weight:var(--font-weight-medium);box-shadow:var(--shadow-md);transition:all var(--transition-fast);align-items:center;gap:.5rem;padding:.5rem 1rem;text-decoration:none;display:inline-flex;position:fixed;top:1rem;left:1rem}.floating-back-link:hover{background:var(--bg-hover);color:var(--text-primary);border-color:var(--text-muted);box-shadow:var(--shadow-lg)}.sidebar-toggle{z-index:200;background:var(--bg-card);border:1px solid var(--border-color);width:44px;height:44px;color:var(--text-primary);cursor:pointer;box-shadow:var(--shadow-md);border-radius:50%;flex-direction:column;justify-content:center;align-items:center;gap:6px;padding:0;transition:all .2s cubic-bezier(.4,0,.2,1);display:none;position:fixed;top:1rem;left:1rem}.sidebar-toggle:active{transform:scale(.96)}.sidebar-toggle:hover{background:var(--bg-hover);box-shadow:var(--shadow-lg)}.hamburger-line{border-radius:var(--radius-xs);transform-origin:50%;background:currentColor;width:20px;height:2px;transition:transform .3s cubic-bezier(.4,0,.2,1),opacity .2s;display:block}.sidebar-toggle.open .hamburger-line:first-child{transform:translateY(8px)rotate(45deg)}.sidebar-toggle.open .hamburger-line:nth-child(2){opacity:0;transform:scaleX(0)}.sidebar-toggle.open .hamburger-line:nth-child(3){transform:translateY(-8px)rotate(-45deg)}.sidebar-overlay{background:var(--overlay-bg);z-index:90;-webkit-backdrop-filter:blur(4px);animation:.25s cubic-bezier(.4,0,.2,1) overlayFadeIn;display:none;position:fixed;inset:0}@keyframes overlayFadeIn{0%{opacity:0}to{opacity:1}}.content{padding:var(--content-padding);flex:1;min-width:0;transition:margin-left .3s cubic-bezier(.4,0,.2,1);overflow-x:hidden}.content.sidebar-visible{margin-left:var(--sidebar-width)}.content.sidebar-hidden{margin-left:var(--sidebar-collapsed-width)}.try-page{width:100vw;min-height:100dvh;padding:5rem var(--gap-lg)var(--gap-lg);background:var(--bg-primary);box-sizing:border-box;justify-content:center;align-items:center;display:flex;overflow-x:hidden}.try-page .viz-root{border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);min-width:0;height:auto;overflow:hidden}.try-page .viz-inspector{max-height:none}.try-page .viz-main{height:auto}.try-page .viz-hdr-chip-fullscreen{display:none}@media (max-width:768px){.try-page{padding:5rem var(--gap-sm)var(--gap-sm)}.try-page .viz-root{border-radius:var(--radius-md)}}.prosemirror-page,.rich-text-editor-page{padding-bottom:var(--gap-md);min-width:0}.prosemirror-page .demo-section>:last-child,.rich-text-editor-page .demo-section>:last-child{margin-bottom:0}.next-button-wrapper{margin-top:var(--gap-md)}.next-button{background:linear-gradient(135deg,var(--accent-purple),var(--accent-blue));color:#fff;font-weight:var(--font-weight-semibold);font-size:var(--font-size-2sm);border-radius:var(--radius-md);box-shadow:0 2px 8px color-mix(in srgb,var(--accent-purple)35%,transparent);transition:all var(--transition-fast);align-items:center;gap:.4rem;padding:.5rem 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1rem;display:flex}.next-button-arrow{font-size:var(--font-size-md)}.sidebar-toggle{display:flex}.sidebar-overlay{display:block}.sidebar{width:100%;height:100dvh;box-shadow:none;border-right:none;transition:transform .3s cubic-bezier(.4,0,.2,1);transform:translate(-100%)}.sidebar.sidebar-open{transform:translate(0);box-shadow:8px 0 24px #00000026}[data-theme=dark] .sidebar.sidebar-open{box-shadow:8px 0 24px #0006}.sidebar-header{flex-direction:row;align-items:center;padding:1rem 1.5rem 1.5rem calc(1.5rem + 44px)}.sidebar-header .sidebar-header-content{flex:1;min-width:0}.sidebar-header .subtitle{margin-top:.15rem}.content,.content.sidebar-visible,.content.sidebar-hidden{min-width:0;margin-left:0;padding:4.5rem 1.25rem 1.25rem;overflow-x:hidden}.demo-header{max-width:100%}}.demo-section{animation:fadeIn var(--transition-normal);display:none}.demo-section.active{display:block}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.demo-header{margin-bottom:var(--gap-xl)}.demo-header h2{font-size:var(--font-size-2xl);font-weight:var(--font-weight-bold);margin-bottom:.5rem}.demo-subtitle{color:var(--text-secondary);font-size:var(--font-size-lg)}.demo-grid{gap:var(--gap-lg);margin-bottom:var(--gap-xl);min-width:0;display:grid}.demo-grid.four-cols{grid-template-columns:repeat(4,1fr)}.demo-grid.two-cols{grid-template-columns:repeat(2,1fr)}@media (max-width:1200px){.demo-grid.four-cols{grid-template-columns:repeat(2,1fr)}}@media (min-width:1600px){.content{padding:2.5rem 3rem}.demo-grid.two-cols{grid-template-columns:repeat(2,1fr)}.demo-grid.four-cols{grid-template-columns:repeat(4,1fr)}.structure-comparison{grid-template-columns:1fr 1fr}}.demo-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);min-width:0;overflow:hidden}.demo-grid .demo-card{transition:all var(--transition-normal);flex-direction:column;display:flex}.demo-grid .demo-card:hover{border-color:var(--border-subtle);box-shadow:var(--shadow-lg)}.demo-card.featured{border-color:var(--accent-green);box-shadow:0 0 20px color-mix(in srgb,var(--accent-green)15%,transparent)}.demo-card.large{min-height:300px}.card-header{padding:var(--card-padding);border-bottom:1px solid var(--border-color);justify-content:space-between;align-items:center;gap:var(--gap-md);background:linear-gradient(135deg,color-mix(in srgb,var(--accent-purple)15%,transparent),color-mix(in srgb,var(--accent-blue)10%,transparent));display:flex}.card-header h3{font-size:var(--font-size-2lg);font-weight:var(--font-weight-semibold)}.card-content{padding:var(--card-padding);flex:1}.card-footer{padding:var(--card-padding);border-top:1px solid var(--border-color);background:var(--bg-tertiary)}.badge{font-size:var(--font-size-sm);font-weight:var(--font-weight-semibold);border-radius:var(--radius-xl);white-space:nowrap;padding:.25rem .75rem}.badge-red{background:color-mix(in srgb,var(--accent-red)15%,transparent);color:var(--accent-red)}.badge-orange{background:color-mix(in srgb,var(--accent-orange)15%,transparent);color:var(--accent-orange)}.badge-green{background:color-mix(in srgb,var(--accent-green)15%,transparent);color:var(--accent-green)}.badge-blue{background:color-mix(in srgb,var(--accent-blue)15%,transparent);color:var(--accent-blue)}.badge-purple{background:color-mix(in srgb,var(--accent-purple)15%,transparent);color:var(--accent-purple)}.live-badge{animation:2s infinite pulse}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.demo-input,.demo-textarea,.demo-contenteditable{width:100%;font-size:var(--font-size-base);background:var(--bg-tertiary);border:2px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-primary);transition:all var(--transition-fast);padding:.875rem;font-family:inherit}.demo-input:focus,.demo-textarea:focus,.demo-contenteditable:focus{border-color:var(--accent-blue);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent-blue)20%,transparent);outline:none}.demo-textarea{resize:vertical;min-height:80px}.demo-contenteditable{min-height:50px}.demo-contenteditable.large{min-height:120px}.demo-contenteditable.multi-line{min-height:150px}.demo-canvas{background:var(--bg-tertiary);border:2px solid var(--border-color);border-radius:var(--radius-md);width:100%;height:80px}.instructions{margin-top:var(--gap-md);font-size:var(--font-size-md)}.instructions p{margin-bottom:.5rem}.instructions .result{color:var(--text-secondary);font-style:italic}kbd{font-size:var(--font-size-sm);font-family:var(--font-mono-code);background:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--radius-sm);box-shadow:0 2px 0 var(--border-color);padding:.2rem .5rem;display:inline-block}.hint{font-size:var(--font-size-2sm);color:var(--text-secondary);margin-top:var(--gap-md);font-style:italic}.pros-cons{font-size:var(--font-size-2sm);list-style:none}.pros-cons li{padding:.25rem 0 .25rem 1.5rem;position:relative}.pros-cons li:before{position:absolute;left:0}.pros-cons .pro:before{content:"✓";color:var(--accent-green)}.pros-cons .con:before{content:"✗";color:var(--accent-red)}.comparison-table{border-collapse:collapse;width:100%;font-size:var(--font-size-2md)}.comparison-table th,.comparison-table td{text-align:left;border-bottom:1px solid var(--border-color);padding:.875rem 1rem}.comparison-table th{background:var(--bg-tertiary);font-weight:var(--font-weight-semibold);color:var(--text-secondary);text-transform:uppercase;font-size:var(--font-size-sm);letter-spacing:.05em}.comparison-table code{background:var(--bg-primary);border-radius:var(--radius-sm);font-family:var(--font-mono-code);font-size:var(--font-size-2sm);padding:.2rem .5rem}.comparison-table .yes{color:var(--accent-green)}.comparison-table .no{color:var(--accent-red)}.comparison-table .easy{color:var(--accent-green)}.comparison-table .medium{color:var(--accent-orange)}.comparison-table .hard{color:var(--accent-red)}.comparison-table .highlight-row{background:color-mix(in srgb,var(--accent-green)5%,transparent)}.comparison-table .highlight-row td{border-color:color-mix(in srgb,var(--accent-green)20%,transparent)}.demo-card.insight{background:linear-gradient(135deg,color-mix(in srgb,var(--accent-blue)10%,transparent),color-mix(in srgb,var(--accent-purple)10%,transparent));border-color:color-mix(in srgb,var(--accent-blue)30%,transparent);margin-top:var(--gap-xl)}.demo-card.insight>.card-header{border-bottom-color:color-mix(in srgb,var(--accent-blue)25%,transparent);color:var(--accent-blue)}.insight ul{margin-left:1.25rem}.insight li{margin-bottom:.5rem}.insight .solution{margin-top:var(--gap-md);color:var(--accent-green);font-weight:var(--font-weight-semibold)}.shortcut-grid{gap:var(--gap-md);margin-top:var(--gap-lg);grid-template-columns:repeat(4,1fr);display:grid}.shortcut{background:var(--bg-tertiary);border-radius:var(--radius-md);text-align:center;flex-direction:column;align-items:center;gap:.5rem;padding:1rem;display:flex}.shortcut span{font-size:var(--font-size-2sm);color:var(--text-secondary)}.code-output{background:var(--code-bg);border:1px solid 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