.page-shell{display:grid;grid-template-columns:minmax(0,1fr) 160px;gap:16px;max-width:1520px;margin:0 auto;padding:16px;align-items:start}.app{max-width:1400px;width:100%;margin:0 auto;min-width:0;position:relative}.about-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1000;display:flex;align-items:center;justify-content:center;padding:24px;background:#0f172a73;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}.about-modal{width:min(560px,100%);max-height:min(80vh,640px);display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--border);border-radius:14px;box-shadow:0 24px 48px #0f172a2e;overflow:hidden}.about-modal__header{display:flex;align-items:center;justify-content:space-between;padding:16px 18px 12px;border-bottom:1px solid var(--border)}.about-modal__header h2{margin:0;font-size:1.1rem}.about-modal__close{border:0;background:transparent;color:var(--text-muted);font-size:1.5rem;line-height:1;cursor:pointer;padding:4px 8px;border-radius:6px}.about-modal__close:hover{background:var(--surface-muted);color:var(--text)}.about-tabs{display:flex;gap:4px;padding:0 18px;border-bottom:1px solid var(--border)}.about-tab{border:0;background:transparent;color:var(--text-muted);padding:12px 14px;font-size:.875rem;cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-1px}.about-tab:hover{color:var(--text)}.about-tab--active{color:var(--accent);border-bottom-color:var(--accent);font-weight:600}.about-modal__body{overflow:auto;padding:18px}.about-panel h3{margin:0 0 10px;font-size:1rem}.about-panel p{margin:0 0 12px;color:var(--text-muted);line-height:1.6}.about-panel ul{margin:0 0 12px;padding-left:20px;color:var(--text-muted);line-height:1.6}.about-panel li+li{margin-top:6px}.ad-rail{position:sticky;top:24px}.ad-slot{display:flex;flex-direction:column;gap:6px}.ad-label{font-size:.7rem;letter-spacing:.06em;text-transform:uppercase;color:var(--text-muted);text-align:center}.ad-slot__frame{overflow:hidden;border-radius:10px;background:var(--surface);border:1px solid var(--border)}.ad-placeholder{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;height:100%;min-height:inherit;padding:16px;text-align:center;color:var(--text-muted);background:linear-gradient(180deg,#f8fafc,#eef2f7)}.ad-placeholder p{margin:0;font-size:.85rem;font-weight:600;color:#64748b}.ad-placeholder span{font-size:.72rem;line-height:1.4;max-width:120px}.footer-ads{margin-top:24px}.ad-slot--footer .ad-slot__frame{min-height:90px}.ad-slot--sidebar .ad-slot__frame{width:160px}.hero{margin-bottom:12px}.hero-ads{max-width:100%}.ad-slot--header .ad-slot__frame{min-height:72px}.workspace{display:flex;flex-direction:column;gap:12px}.toolbar{display:flex;flex-wrap:wrap;gap:6px;align-items:center;padding:8px 10px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}.toolbar__spacer{flex:1;min-width:12px}.toolbar-group{display:flex;flex-wrap:wrap;gap:8px;align-items:center}.toolbar-group--view{margin-left:auto}.toolbar-label{color:var(--text-muted);font-size:.875rem;margin-right:4px}.btn{border:1px solid var(--border);background:var(--surface);color:var(--text);border-radius:var(--radius-sm);padding:6px 10px;font-size:.8125rem;line-height:1.2;white-space:nowrap;cursor:pointer;transition:background .15s ease,border-color .15s ease,color .15s ease}.btn--sm{padding:5px 8px;font-size:.75rem}.btn--icon{display:inline-flex;align-items:center;gap:5px}.btn__icon{display:inline-flex;flex-shrink:0;color:#64748b}.btn:hover:not(:disabled){background:var(--surface-muted);border-color:#cbd5e1}.btn:hover:not(:disabled) .btn__icon{color:var(--accent)}.btn__label{line-height:1.2}.btn:active:not(:disabled){transform:translateY(1px)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn--toggle.btn--active{background:var(--accent);border-color:var(--accent);color:#fff}.split-layout{display:grid;grid-template-columns:1fr 1fr;gap:12px;min-height:520px}.panel-header{padding:10px 12px;border-bottom:1px solid var(--border);background:var(--surface-muted)}.panel-header--row{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.panel-header h2{margin:0;font-size:.8125rem;font-weight:600;letter-spacing:.02em;text-transform:uppercase;color:var(--text-muted)}.stats{display:flex;flex-wrap:wrap;gap:6px}.stat-pill{padding:2px 8px;border-radius:999px;background:var(--surface);border:1px solid var(--border);color:var(--text-muted);font-size:.6875rem;line-height:1.4}.panel{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;min-height:0}.json-textarea{flex:1;width:100%;min-height:460px;border:0;resize:vertical;padding:12px;font-family:var(--font-mono);font-size:.8125rem;line-height:1.5;outline:none;background:#fbfcfe}.json-textarea--error{background:var(--error-bg)}.error-banner{padding:8px 12px;color:var(--error);background:var(--error-bg);border-top:1px solid #fecaca;font-size:.75rem}.viewer{flex:1;overflow:auto;padding:12px;background:#fbfcfe}.viewer-placeholder,.viewer-error{color:var(--text-muted);padding:16px;border:1px dashed var(--border);border-radius:var(--radius-sm);background:var(--surface-muted);font-size:.8125rem}.viewer-error{color:var(--error);background:var(--error-bg);border-color:#fecaca}.viewer-error p{margin:8px 0 0;color:#7f1d1d}.json-tree{font-family:var(--font-mono);font-size:.8125rem;line-height:1.5}.tree-node{margin-left:0}.tree-children{margin-left:18px;border-left:1px solid #e5ebf2;padding-left:10px}.tree-toggle{display:flex;flex-wrap:wrap;align-items:center;gap:6px;width:100%;border:0;background:transparent;text-align:left;padding:2px 0;cursor:pointer;color:inherit}.tree-node--leaf{display:flex;flex-wrap:wrap;gap:6px;padding:2px 0 2px 18px}.tree-chevron{width:12px;color:var(--text-muted);font-size:.7rem}.node-key{color:#7c3aed}.node-colon,.tree-bracket,.tree-summary{color:var(--text-muted)}.node-type{font-size:.75rem;text-transform:uppercase;letter-spacing:.04em;padding:1px 6px;border-radius:999px;background:#e8eef7;color:#475569}.node-type--array{background:#dbeafe;color:#1d4ed8}.node-type--object{background:#ede9fe;color:#6d28d9}.node-type--string{background:#dcfce7;color:#166534}.node-type--number{background:#ffedd5;color:#c2410c}.node-type--boolean{background:#fef3c7;color:#b45309}.node-type--null{background:#f3f4f6;color:#6b7280}.primitive--string{color:#047857}.primitive--number{color:#c2410c}.primitive--boolean{color:#b45309}.primitive--null{color:#6b7280}.tree-close{padding:2px 0 2px 18px}.json-formatted{margin:0;font-family:var(--font-mono);font-size:.88rem;line-height:1.55;white-space:pre-wrap;word-break:break-word}.hl-key{color:#7c3aed}.hl-string{color:#047857}.hl-number{color:#c2410c}.hl-literal{color:#b45309}.hl-punct{color:#64748b}@media(max-width:1180px){.page-shell{grid-template-columns:minmax(0,1fr);padding:24px}.ad-rail{display:none}}@media(max-width:960px){.split-layout{grid-template-columns:1fr}.btn__label{display:none}.btn--icon{padding:6px}.toolbar-group--view{margin-left:0}}:root{--bg: #f1f5f9;--surface: #ffffff;--surface-muted: #f8fafc;--border: #e2e8f0;--text: #0f172a;--text-muted: #64748b;--accent: #2563eb;--accent-hover: #1d4ed8;--success: #047857;--error: #b91c1c;--error-bg: #fef2f2;--shadow: 0 1px 3px rgba(15, 23, 42, .06), 0 4px 12px rgba(15, 23, 42, .04);--radius: 10px;--radius-sm: 6px;--font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;--font-sans: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif}*{box-sizing:border-box}html,body,#root{min-height:100%}body{margin:0;font-family:var(--font-sans);font-size:14px;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}button,textarea{font:inherit}a{color:var(--accent)}