*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #0f172a;--surface: #1e293b;--surface2: #273549;--border: #334155;--text: #f1f5f9;--muted: #94a3b8;--accent: #6366f1;--accent-h: #818cf8;--success: #22c55e;--danger: #ef4444;--radius: 8px;--font: system-ui, -apple-system, "Segoe UI", sans-serif;--mono: "JetBrains Mono", "Fira Code", "Cascadia Code", Consolas, monospace}html{font-size:16px}body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.6;min-height:100vh;display:flex;flex-direction:column}a{color:var(--accent-h);text-decoration:none}a:hover{text-decoration:underline}.site-nav{display:flex;align-items:center;justify-content:space-between;padding:0 24px;height:56px;background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100}.site-nav .logo{font-size:1.1rem;font-weight:700;color:var(--text);letter-spacing:-.01em}.site-nav .logo span{color:var(--accent-h)}.site-nav nav a{color:var(--muted);font-size:.875rem;margin-left:20px;transition:color .15s}.site-nav nav a:hover{color:var(--text);text-decoration:none}main{flex:1}.container{max-width:1400px;margin:0 auto;padding:0 24px}.hero{text-align:center;padding:72px 24px 48px}.hero h1{font-size:clamp(2rem,5vw,3.25rem);font-weight:800;letter-spacing:-.03em;line-height:1.15;margin-bottom:16px}.hero h1 span{color:var(--accent-h)}.hero p{font-size:1.125rem;color:var(--muted);max-width:540px;margin:0 auto}.tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px;padding:0 24px 80px;max-width:1400px;margin:0 auto}.tool-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px;transition:border-color .2s,transform .2s;display:flex;flex-direction:column;gap:10px}.tool-card:hover{border-color:var(--accent);transform:translateY(-2px)}.tool-card .tag{display:inline-block;font-size:.7rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;background:#6366f12e;color:var(--accent-h);padding:2px 8px;border-radius:4px;align-self:flex-start}.tool-card h3{font-size:1.1rem;font-weight:700;color:var(--text)}.tool-card p{font-size:.875rem;color:var(--muted);flex:1}.tool-card .card-link{display:inline-flex;align-items:center;gap:6px;font-size:.875rem;font-weight:600;color:var(--accent-h);margin-top:4px}.tool-card .card-link:after{content:"→"}.tool-header{padding:40px 24px 28px;max-width:1400px;margin:0 auto;border-bottom:1px solid var(--border)}.tool-header h1{font-size:clamp(1.5rem,3vw,2.25rem);font-weight:800;letter-spacing:-.025em;margin-bottom:8px}.tool-header p{color:var(--muted);font-size:1rem;max-width:640px}.template-selector{display:flex;gap:8px;padding:20px 24px;max-width:1400px;margin:0 auto;flex-wrap:wrap;align-items:center}.template-selector label{font-size:.8rem;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.06em;margin-right:4px}.template-btn{background:var(--surface);border:1px solid var(--border);color:var(--muted);padding:7px 16px;border-radius:6px;font-size:.875rem;font-weight:500;cursor:pointer;transition:all .15s;font-family:var(--font)}.template-btn:hover{border-color:var(--accent);color:var(--text)}.template-btn.active{background:#6366f12e;border-color:var(--accent);color:var(--accent-h);font-weight:600}.editor-preview{display:grid;grid-template-columns:420px 1fr;gap:0;height:calc(100vh - 260px);min-height:600px;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.editor-panel{display:flex;flex-direction:column;border-right:1px solid var(--border)}.editor-panel label{padding:10px 16px;font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.07em;color:var(--muted);border-bottom:1px solid var(--border);background:var(--surface);flex-shrink:0}#markdown-editor{flex:1;resize:none;background:var(--bg);color:var(--text);border:none;outline:none;font-family:var(--mono);font-size:.8rem;line-height:1.7;padding:16px;overflow-y:auto;caret-color:var(--accent-h)}#markdown-editor::selection{background:#6366f14d}.preview-panel{display:flex;flex-direction:column;background:#cbd5e1;overflow:hidden}.preview-panel-header{padding:10px 16px;font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.07em;color:#475569;border-bottom:1px solid #94a3b8;background:#e2e8f0;flex-shrink:0;display:flex;align-items:center;gap:8px}.preview-status{margin-left:auto;font-size:.7rem;font-weight:500;text-transform:none;letter-spacing:0}.preview-status.ok{color:#16a34a}.preview-status.err{color:var(--danger)}#preview-container{flex:1;overflow:auto;padding:24px;display:flex;align-items:flex-start;justify-content:center}#preview-container svg{max-width:100%;height:auto;box-shadow:0 4px 24px #00000059;border-radius:3px}.preview-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;color:#64748b;height:100%;font-size:.9rem}.download-bar{display:flex;align-items:center;gap:12px;padding:16px 24px;background:var(--surface);border-bottom:1px solid var(--border);max-width:1400px;margin:0 auto;width:100%}.btn-download{display:inline-flex;align-items:center;gap:7px;padding:9px 20px;border-radius:var(--radius);font-size:.9rem;font-weight:600;cursor:pointer;border:none;transition:all .15s;font-family:var(--font)}.btn-download.primary{background:var(--accent);color:#fff}.btn-download.primary:hover{background:var(--accent-h)}.btn-download.secondary{background:var(--surface2);color:var(--text);border:1px solid var(--border)}.btn-download.secondary:hover{border-color:var(--accent)}.btn-download:disabled{opacity:.4;cursor:not-allowed}.download-hint{font-size:.8rem;color:var(--muted);margin-left:8px}.page-content{max-width:900px;margin:0 auto;padding:56px 24px 80px}.page-content h2{font-size:1.4rem;font-weight:700;margin:48px 0 14px;padding-top:8px;border-top:1px solid var(--border)}.page-content h2:first-child{border-top:none;margin-top:0}.page-content h3{font-size:1.05rem;font-weight:600;margin:24px 0 8px;color:var(--accent-h)}.page-content p{color:var(--muted);line-height:1.75;margin-bottom:12px}.page-content ul{color:var(--muted);padding-left:20px;margin-bottom:12px;line-height:1.75}.page-content li{margin-bottom:4px}.syntax-table{width:100%;border-collapse:collapse;font-size:.875rem;margin:16px 0 32px}.syntax-table th{text-align:left;padding:10px 14px;background:var(--surface2);color:var(--text);font-weight:600;border-bottom:2px solid var(--border)}.syntax-table td{padding:9px 14px;border-bottom:1px solid var(--border);color:var(--muted);vertical-align:top}.syntax-table tr:hover td{background:var(--surface)}.syntax-table code{font-family:var(--mono);font-size:.82rem;background:var(--surface2);padding:2px 6px;border-radius:4px;color:var(--accent-h);white-space:pre}.syntax-table td:first-child code{display:block}code{font-family:var(--mono);font-size:.85em;background:var(--surface2);padding:2px 6px;border-radius:4px;color:var(--accent-h)}pre{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px;overflow-x:auto;font-family:var(--mono);font-size:.82rem;line-height:1.7;color:var(--text);margin:12px 0 24px}.site-footer{padding:24px;text-align:center;border-top:1px solid var(--border);color:var(--muted);font-size:.8rem}.site-footer a{color:var(--muted)}@media (max-width: 900px){.editor-preview{grid-template-columns:1fr;height:auto}.editor-panel{border-right:none;border-bottom:1px solid var(--border)}#markdown-editor{height:400px;resize:vertical}#preview-container,.preview-panel{min-height:400px}}