:root{--bg-primary: #ffffff;--bg-surface: #f8fafc;--bg-elevated: #ffffff;--text-main: #0f172a;--text-muted: #64748b;--border-color: #e2e8f0;--accent-color: #0284c7;--accent-hover: #0369a1;--accent-light: #e0f2fe;--code-bg: #f1f5f9;--table-border: #cbd5e1;--table-stripe: #f8fafc;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--font-mono: "JetBrains Mono", Consolas, "Liberation Mono", Menlo, Courier, monospace;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 14px;--shadow-sm: 0 1px 3px rgba(0,0,0,.05);--shadow-md: 0 4px 6px -1px rgba(0,0,0,.08), 0 2px 4px -2px rgba(0,0,0,.05);--header-height: 64px}[data-theme=github-dark]{--bg-primary: #0d1117;--bg-surface: #161b22;--bg-elevated: #21262d;--text-main: #c9d1d9;--text-muted: #8b949e;--border-color: #30363d;--accent-color: #38bdf8;--accent-hover: #7dd3fc;--accent-light: #0c4a6e;--code-bg: #161b22;--table-border: #30363d;--table-stripe: #161b22}[data-theme=sepia]{--bg-primary: #fbf7ee;--bg-surface: #f4ecd8;--bg-elevated: #fcf9f2;--text-main: #3d3731;--text-muted: #7d7265;--border-color: #e4d8bc;--accent-color: #b45309;--accent-hover: #92400e;--accent-light: #fef3c7;--code-bg: #f2e7cd;--table-border: #e4d8bc;--table-stripe: #f6eedb}[data-theme=cyber]{--bg-primary: #0f172a;--bg-surface: #1e293b;--bg-elevated: #334155;--text-main: #f8fafc;--text-muted: #94a3b8;--border-color: #334155;--accent-color: #38bdf8;--accent-hover: #7dd3fc;--accent-light: #0369a1;--code-bg: #1e293b;--table-border: #334155;--table-stripe: #1e293b}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background-color:var(--bg-primary);color:var(--text-main);line-height:1.6;min-height:100vh;display:flex;flex-direction:column}.app-header{height:var(--header-height);background-color:var(--bg-surface);border-bottom:1px solid var(--border-color);position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;padding:0 1.25rem}.brand{display:flex;align-items:center;gap:.625rem;text-decoration:none;color:var(--text-main);font-weight:700;font-size:1.2rem}.brand-icon{width:32px;height:32px}.brand-badge{font-size:.75rem;padding:.15rem .45rem;background-color:var(--accent-light);color:var(--accent-color);border-radius:var(--radius-sm);font-weight:600}.header-actions{display:flex;align-items:center;gap:.75rem}.btn-group{display:flex;background-color:var(--bg-elevated);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:2px}.btn-icon-text{display:inline-flex;align-items:center;gap:.4rem;padding:.4rem .75rem;font-size:.875rem;font-weight:500;color:var(--text-main);background:transparent;border:none;border-radius:var(--radius-sm);cursor:pointer;transition:all .15s ease;white-space:nowrap}.btn-icon-text:hover{background-color:var(--border-color)}.btn-group .btn-icon-text.active{background-color:var(--accent-color);color:#fff}.btn-primary{background-color:var(--accent-color);color:#fff;border:1px solid transparent}.btn-primary:hover{background-color:var(--accent-hover)}.btn-outline{background-color:var(--bg-elevated);border:1px solid var(--border-color)}.btn-outline:hover{background-color:var(--border-color)}.select-control{-webkit-appearance:none;-moz-appearance:none;appearance:none;padding:.4rem 1.8rem .4rem .75rem;font-size:.875rem;font-weight:500;color:var(--text-main);background-color:var(--bg-elevated);border:1px solid var(--border-color);border-radius:var(--radius-md);cursor:pointer;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2364748b'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right .5rem center;background-size:1rem}.workspace-toolbar{background-color:var(--bg-surface);border-bottom:1px solid var(--border-color);padding:.4rem 1.25rem;display:flex;align-items:center;justify-content:space-between;font-size:.8125rem;color:var(--text-muted)}.toolbar-stats{display:flex;align-items:center;gap:1.25rem}.stat-item{display:inline-flex;align-items:center;gap:.35rem}.stat-value{font-weight:600;color:var(--text-main)}.toolbar-controls{display:flex;align-items:center;gap:.5rem}.workspace-container{display:flex;height:calc(100vh - var(--header-height) - 37px);min-height:520px;background-color:var(--bg-primary);position:relative}.pane{flex:1;height:100%;overflow:hidden;display:flex;flex-direction:column}.pane-editor{border-right:1px solid var(--border-color);background-color:var(--bg-primary)}.editor-textarea{width:100%;height:100%;padding:1.25rem;border:none;outline:none;resize:none;background-color:transparent;color:var(--text-main);font-family:var(--font-mono);font-size:.9375rem;line-height:1.6;white-space:pre-wrap;word-break:break-word;-moz-tab-size:2;tab-size:2}.pane-preview{background-color:var(--bg-primary);overflow-y:auto;padding:2rem;scroll-behavior:smooth}.mode-editor .pane-preview{display:none}.mode-editor .pane-editor{flex:1 1 100%;border-right:none}.mode-preview .pane-editor{display:none}.mode-preview .pane-preview{flex:1 1 100%}.markdown-body{max-width:860px;margin:0 auto;color:var(--text-main);font-size:1rem}.markdown-body h1,.markdown-body h2,.markdown-body h3,.markdown-body h4,.markdown-body h5,.markdown-body h6{margin-top:1.5rem;margin-bottom:.75rem;font-weight:600;line-height:1.3}.markdown-body h1{font-size:2rem;padding-bottom:.5rem;border-bottom:1px solid var(--border-color)}.markdown-body h2{font-size:1.5rem;padding-bottom:.35rem;border-bottom:1px solid var(--border-color)}.markdown-body h3{font-size:1.25rem}.markdown-body h4{font-size:1.1rem}.markdown-body p,.markdown-body ul,.markdown-body ol{margin-bottom:1rem}.markdown-body ul,.markdown-body ol{padding-left:2rem}.markdown-body li+li{margin-top:.25rem}.markdown-body blockquote{padding:.5rem 1rem;margin:1rem 0;color:var(--text-muted);border-left:4px solid var(--accent-color);background-color:var(--code-bg);border-radius:0 var(--radius-sm) var(--radius-sm) 0}.markdown-body code{padding:.2em .4em;font-family:var(--font-mono);font-size:.875em;background-color:var(--code-bg);border-radius:var(--radius-sm)}.markdown-body pre{margin:1rem 0;position:relative;background-color:var(--code-bg);border:1px solid var(--border-color);border-radius:var(--radius-md);overflow:hidden}.markdown-body pre code{display:block;padding:1.25rem;overflow-x:auto;background:transparent;font-size:.875rem}.code-header{display:flex;align-items:center;justify-content:space-between;padding:.35rem .75rem;background-color:var(--bg-surface);border-bottom:1px solid var(--border-color);font-size:.75rem;color:var(--text-muted);font-family:var(--font-mono)}.btn-copy-code{background:transparent;border:none;color:var(--text-muted);cursor:pointer;padding:.2rem .5rem;border-radius:var(--radius-sm);font-size:.75rem}.btn-copy-code:hover{background-color:var(--border-color);color:var(--text-main)}.markdown-body table{width:100%;border-collapse:collapse;margin:1.25rem 0;font-size:.9375rem}.markdown-body th,.markdown-body td{padding:.6rem .85rem;border:1px solid var(--table-border);text-align:left}.markdown-body th{background-color:var(--table-stripe);font-weight:600}.markdown-body tr:nth-child(2n) td{background-color:var(--table-stripe)}.markdown-body hr{height:2px;background-color:var(--border-color);border:none;margin:2rem 0}.markdown-body a{color:var(--accent-color);text-decoration:underline;text-underline-offset:3px}.markdown-body a:hover{color:var(--accent-hover)}.markdown-body img{max-width:100%;height:auto;border-radius:var(--radius-md);margin:1rem 0}.task-list-item{list-style-type:none;margin-left:-1.25rem;display:flex;align-items:center;gap:.5rem}.task-list-item input[type=checkbox]{accent-color:var(--accent-color);width:1rem;height:1rem}.seo-section{background-color:var(--bg-surface);border-top:1px solid var(--border-color);padding:4rem 1.5rem}.seo-container{max-width:1000px;margin:0 auto}.section-header{text-align:center;margin-bottom:3rem}.section-title{font-size:2rem;font-weight:700;margin-bottom:.75rem}.section-subtitle{color:var(--text-muted);font-size:1.125rem;max-width:680px;margin:0 auto}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.5rem;margin-bottom:4rem}.feature-card{background-color:var(--bg-elevated);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:1.5rem;box-shadow:var(--shadow-sm);transition:transform .2s ease,box-shadow .2s ease}.feature-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}.feature-icon{font-size:2rem;color:var(--accent-color);margin-bottom:1rem}.feature-title{font-size:1.25rem;font-weight:600;margin-bottom:.5rem}.feature-desc{color:var(--text-muted);font-size:.9375rem;line-height:1.5}.cheatsheet-box{background-color:var(--bg-elevated);border:1px solid var(--border-color);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm);margin-bottom:4rem}.cheatsheet-tabs{display:flex;overflow-x:auto;background-color:var(--bg-surface);border-bottom:1px solid var(--border-color)}.tab-btn{padding:.85rem 1.25rem;font-size:.9375rem;font-weight:600;color:var(--text-muted);background:transparent;border:none;cursor:pointer;white-space:nowrap;border-bottom:2px solid transparent;transition:all .15s ease}.tab-btn:hover{color:var(--text-main)}.tab-btn.active{color:var(--accent-color);border-bottom-color:var(--accent-color);background-color:var(--bg-elevated)}.tab-content{display:none;padding:1.5rem}.tab-content.active{display:block}.syntax-table{width:100%;border-collapse:collapse}.syntax-table th,.syntax-table td{padding:.75rem 1rem;border-bottom:1px solid var(--border-color);text-align:left;font-size:.9375rem}.syntax-table th{color:var(--text-muted);font-weight:600;font-size:.8125rem;text-transform:uppercase;letter-spacing:.05em}.syntax-code{font-family:var(--font-mono);background-color:var(--code-bg);padding:.25rem .5rem;border-radius:var(--radius-sm);display:inline-block;cursor:pointer;border:1px solid var(--border-color)}.syntax-code:hover{border-color:var(--accent-color)}.faq-list{display:flex;flex-direction:column;gap:1rem;margin-bottom:3rem}.faq-item{background-color:var(--bg-elevated);border:1px solid var(--border-color);border-radius:var(--radius-md);overflow:hidden}.faq-question{width:100%;padding:1.25rem;text-align:left;background:transparent;border:none;font-size:1.05rem;font-weight:600;color:var(--text-main);display:flex;align-items:center;justify-content:space-between;cursor:pointer}.faq-icon{transition:transform .2s ease;font-size:1.2rem;color:var(--text-muted)}.faq-item.open .faq-icon{transform:rotate(180deg)}.faq-answer{display:none;padding:0 1.25rem 1.25rem;color:var(--text-muted);font-size:.9375rem;line-height:1.6}.faq-item.open .faq-answer{display:block}.app-footer{background-color:var(--bg-primary);border-top:1px solid var(--border-color);padding:3rem 1.5rem;margin-top:auto}.footer-container{max-width:1000px;margin:0 auto;display:flex;flex-direction:column;gap:2rem}.footer-top{display:flex;flex-wrap:wrap;justify-content:space-between;gap:2rem}.footer-brand{max-width:320px}.footer-brand p{color:var(--text-muted);font-size:.875rem;margin-top:.5rem}.footer-links-group{display:flex;gap:3rem}.footer-col h4{font-size:.875rem;text-transform:uppercase;letter-spacing:.05em;margin-bottom:.75rem;color:var(--text-main)}.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:.4rem}.footer-col a{color:var(--text-muted);text-decoration:none;font-size:.875rem;transition:color .15s ease}.footer-col a:hover{color:var(--accent-color)}.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;border-top:1px solid var(--border-color);padding-top:1.5rem;color:var(--text-muted);font-size:.8125rem}.lang-selector{display:flex;align-items:center;gap:.5rem}.lang-link{color:var(--text-muted);text-decoration:none;padding:.2rem .5rem;border-radius:var(--radius-sm);font-size:.8125rem}.lang-link:hover,.lang-link.active{color:var(--accent-color);background-color:var(--accent-light);font-weight:600}.page-wrapper{max-width:800px;margin:3rem auto;padding:0 1.5rem}.page-header{margin-bottom:2rem;border-bottom:1px solid var(--border-color);padding-bottom:1rem}.page-header h1{font-size:2.25rem;font-weight:700;margin-bottom:.5rem}.page-header p{color:var(--text-muted);font-size:1rem}.page-content section{margin-bottom:2rem}.page-content h2{font-size:1.35rem;font-weight:600;margin-bottom:.75rem;color:var(--text-main)}.page-content p{color:var(--text-main);line-height:1.7;margin-bottom:1rem}.page-content ul{padding-left:1.5rem;margin-bottom:1rem}.page-content li{margin-bottom:.5rem}.toast{position:fixed;bottom:2rem;right:2rem;background-color:#0f172a;color:#fff;padding:.75rem 1.25rem;border-radius:var(--radius-md);font-size:.875rem;font-weight:500;box-shadow:var(--shadow-md);z-index:100;opacity:0;transform:translateY(10px);transition:all .25s ease;pointer-events:none}.toast.show{opacity:1;transform:translateY(0)}@media (max-width: 768px){.app-header{padding:0 .75rem}.brand span{display:none}.workspace-container{flex-direction:column;height:auto}.pane{height:50vh}.pane-editor{border-right:none;border-bottom:1px solid var(--border-color)}.footer-top{flex-direction:column}.footer-links-group{flex-wrap:wrap;gap:1.5rem}}.nav-ecosystem{display:flex;align-items:center;gap:.5rem;margin-left:1.5rem}.nav-link{text-decoration:none;font-size:.8125rem;font-weight:500;color:var(--text-muted);padding:.3rem .6rem;border-radius:var(--radius-sm);transition:all .15s ease;display:inline-flex;align-items:center;gap:.35rem}.nav-link:hover,.nav-link.active{color:var(--text-main);background-color:var(--bg-elevated)}.nav-link .tag-soon{font-size:.65rem;font-weight:600;background-color:var(--accent-light);color:var(--accent-color);padding:.1rem .35rem;border-radius:4px}.editor-header-bar{display:flex;align-items:center;justify-content:space-between;padding:.35rem .75rem;background-color:var(--bg-surface);border-bottom:1px solid var(--border-color);font-size:.8125rem}.format-btn-group{display:flex;align-items:center;gap:.2rem}.btn-format{background:transparent;border:1px solid transparent;color:var(--text-muted);cursor:pointer;padding:.25rem .45rem;border-radius:var(--radius-sm);font-size:.9rem;display:inline-flex;align-items:center;justify-content:center;transition:all .15s ease}.btn-format:hover{background-color:var(--bg-elevated);border-color:var(--border-color);color:var(--text-main)}.preview-header-bar{display:flex;align-items:center;justify-content:space-between;padding:.35rem .75rem;background-color:var(--bg-surface);border-bottom:1px solid var(--border-color);font-size:.8125rem;color:var(--text-muted)}