:root,[data-theme=light]{--bg:#f8fafc;--card:#ffffff;--card-alt:#f8fafc;--input-bg:#ffffff;--border:#e2e8f0;--border-strong:#cbd5e1;--text:#0f172a;--muted:#64748b;--accent:#2563eb;--accent-hover:#1d4ed8;--accent-soft:#eff6ff;--error:#dc2626;--error-bg:#fef2f2;--error-border:#fecaca;--hover:#f1f5f9;--selected:#eef2ff;--tree-key:#0f172a;--tree-index:#7c3aed;--val-string:#059669;--val-number:#d97706;--val-boolean:#dc2626;--radius:10px;--shadow:0 1px 3px rgba(0,0,0,.08), 0 4px 12px rgba(0,0,0,.05);--mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;--sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif}[data-theme=dark]{--bg:#0b1220;--card:#111a2e;--card-alt:#0f1729;--input-bg:#0f1729;--border:#1f2a44;--border-strong:#2a3a5c;--text:#e2e8f0;--muted:#94a3b8;--accent:#60a5fa;--accent-hover:#93c5fd;--accent-soft:#1e293b;--error:#f87171;--error-bg:rgba(248,113,113,.1);--error-border:rgba(248,113,113,.35);--hover:#1a2540;--selected:#1e2a4a;--tree-key:#e2e8f0;--tree-index:#a78bfa;--val-string:#34d399;--val-number:#fbbf24;--val-boolean:#f87171;--shadow:0 1px 3px rgba(0,0,0,.4), 0 4px 12px rgba(0,0,0,.3)}*{box-sizing:border-box}html,body{height:100%}body{margin:0;font-family:var(--sans);color:var(--text);background:var(--bg);line-height:1.5;-webkit-font-smoothing:antialiased}a{color:var(--accent)}button{font-family:inherit}.skip-link{position:absolute;top:-100px;left:16px;background:var(--accent);color:#fff;padding:10px 16px;border-radius:8px;font-weight:600;text-decoration:none;z-index:10000;box-shadow:var(--shadow);transition:top .2s ease-in-out}.skip-link:focus{top:16px;outline:2px solid #ffffff;outline-offset:2px}.visually-hidden{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}.main-content,.interactive-tool{display:flex;flex-direction:column;gap:16px}.card-header-label{font:inherit;color:inherit;cursor:pointer;display:inline}.app{max-width:1280px;margin:0 auto;padding:20px 16px 32px;display:flex;flex-direction:column;gap:16px}.app-header{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:4px 2px}.app-header-text{display:flex;flex-direction:column;align-items:flex-start;gap:2px;min-width:0}.app-header h1{margin:0;font-size:22px;font-weight:700;letter-spacing:-.02em}.header-sub{color:var(--muted);font-size:13px}.header-lead{margin:6px 0 0;font-size:13.5px;color:var(--muted);line-height:1.6;max-width:860px;text-align:left}.theme-toggle{flex-shrink:0;width:40px;height:40px;border-radius:10px;border:1px solid var(--border);background:var(--card);color:var(--text);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;font-size:18px;line-height:1;transition:background .15s,border-color .15s,transform .1s;box-shadow:var(--shadow)}.theme-toggle:hover{border-color:var(--accent);color:var(--accent)}.theme-toggle:active{transform:scale(.94)}.theme-toggle .theme-icon-dark,[data-theme=dark] .theme-toggle .theme-icon-light{display:none}[data-theme=dark] .theme-toggle .theme-icon-dark{display:inline}.zone-a{display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:stretch}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);display:flex;flex-direction:column;overflow:hidden;min-height:420px}.card-header{padding:10px 14px;font-size:13px;font-weight:600;color:var(--text);background:var(--card-alt);border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}.card-header-actions{display:flex;align-items:center;gap:6px}.btn-card-action{border:1px solid var(--border);background:var(--input-bg);border-radius:5px;padding:2px 8px;font-size:11px;font-weight:550;cursor:pointer;color:var(--muted);transition:all .15s ease}.btn-card-action:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}.card-header small{font-weight:400;color:var(--muted)}.card-body{flex:1;display:flex;flex-direction:column;min-height:0}#jsonInput{flex:1;width:100%;min-height:340px;border:none;padding:12px 14px;font-family:var(--mono);font-size:13px;line-height:1.6;resize:vertical;outline:none;background:transparent;color:var(--text);position:relative;z-index:1;caret-color:var(--text)}#jsonInput:focus{box-shadow:inset 0 0 0 2px var(--accent)}#jsonInput.error{box-shadow:inset 0 0 0 2px var(--error);background:transparent}#jsonInput::placeholder{color:var(--muted)}.editor-wrap{position:relative;flex:1;display:flex;min-height:340px;background:var(--input-bg)}.json-highlight{position:absolute;top:0;right:0;bottom:0;left:0;margin:0;padding:12px 14px;border:none;font-family:var(--mono);font-size:13px;line-height:1.6;white-space:pre-wrap;word-break:break-word;overflow:auto;pointer-events:none;color:transparent;background:transparent;z-index:0}.json-highlight .err-line{background:#dc262629;border-left:3px solid var(--error);margin:0 -14px;padding:0 11px;display:inline-block;min-width:100%;box-decoration-break:clone;-webkit-box-decoration-break:clone}[data-theme=dark] .json-highlight .err-line{background:#f871712e}.json-highlight .err-caret{display:inline-block;width:0;color:var(--error)}.json-highlight .err-caret:before{content:"↲";font-size:18px;line-height:0;vertical-align:-3px}.error-msg{padding:6px 14px;font-size:12px;color:var(--error);background:var(--error-bg);border-top:1px solid var(--error-border);min-height:22px;display:flex;align-items:center;gap:8px}.error-msg:empty{display:none}.error-msg .err-loc{font-weight:700;background:var(--error);color:#fff;padding:1px 7px;border-radius:4px;font-family:var(--mono);font-size:11px;cursor:pointer;flex-shrink:0}.error-msg .err-loc:hover{background:var(--accent-hover)}.error-msg .err-text{flex:1;min-width:0}.tree-search-bar{display:flex;align-items:center;gap:8px;padding:8px 12px;background:var(--card-alt);border-bottom:1px solid var(--border);position:relative;z-index:2}.tree-search-icon{font-size:13px;opacity:.6;flex-shrink:0}#treeSearchInput{flex:1;border:none;background:transparent;font-family:var(--sans);font-size:12.5px;color:var(--text);outline:none;padding:2px 0;min-width:0}#treeSearchInput::placeholder{color:var(--muted);font-size:12px}.search-count{font-size:11px;font-weight:600;color:var(--muted);background:var(--card);border:1px solid var(--border);padding:1px 6px;border-radius:10px;flex-shrink:0}.btn-clear{background:none;border:none;color:var(--muted);cursor:pointer;font-size:12px;padding:2px 6px;border-radius:4px;display:flex;align-items:center;justify-content:center}.btn-clear:hover{background:var(--hover);color:var(--text)}.tree-search-dropdown{position:absolute;top:43px;left:0;right:0;max-height:280px;overflow-y:auto;background:var(--card);border-bottom:1px solid var(--border);box-shadow:0 8px 24px #0000002e;z-index:10}[data-theme=dark] .tree-search-dropdown{box-shadow:0 8px 24px #00000080}.tree-search-item{padding:8px 12px;border-bottom:1px solid var(--border);cursor:pointer;display:flex;flex-direction:column;gap:4px;transition:background .12s}.tree-search-item:last-child{border-bottom:none}.tree-search-item:hover{background:var(--accent-soft)}.search-item-header{display:flex;align-items:center;gap:8px;font-size:12.5px}.search-badge{font-size:10px;font-weight:700;text-transform:uppercase;padding:1px 5px;border-radius:4px;letter-spacing:.04em}.badge-label{background:#10b98124;color:#059669;border:1px solid rgba(16,185,129,.3)}[data-theme=dark] .badge-label{background:#10b98133;color:#34d399;border:1px solid rgba(16,185,129,.4)}.badge-name{background:#6366f124;color:#4f46e5;border:1px solid rgba(99,102,241,.3)}[data-theme=dark] .badge-name{background:#6366f133;color:#818cf8;border:1px solid rgba(99,102,241,.4)}.badge-key{background:#f59e0b24;color:#d97706;border:1px solid rgba(245,158,11,.3)}[data-theme=dark] .badge-key{background:#f59e0b33;color:#fbbf24;border:1px solid rgba(245,158,11,.4)}.badge-value{background:var(--hover);color:var(--muted);border:1px solid var(--border)}.search-item-title{font-weight:600;color:var(--text);flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.search-item-path{font-family:var(--mono);font-size:11.5px;color:var(--accent);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;background:transparent;border:none;padding:0}.tree-search-empty{padding:16px;font-size:12.5px;color:var(--muted);text-align:center}.tree-highlight-match{background:var(--accent-soft)!important;outline:2px solid var(--accent);transition:all .2s ease}.hidden{display:none!important}.tree-scroll{flex:1;overflow:auto;padding:10px 12px;font-family:var(--mono);font-size:13px;line-height:1.55;background:var(--input-bg);min-height:340px}.tree-empty{color:var(--muted);font-family:var(--sans);font-size:13px;padding:24px 0;text-align:center}.tree-node{margin:1px 0}.tree-line{display:flex;align-items:center;gap:4px;padding:2px 6px;border-radius:6px;cursor:pointer;-webkit-user-select:none;user-select:none;white-space:nowrap}.tree-line:hover{background:var(--hover)}.tree-line.expanded{background:var(--selected)}.tree-toggle{width:14px;height:14px;display:inline-flex;align-items:center;justify-content:center;font-size:10px;color:var(--muted);flex-shrink:0}.tree-toggle.expandable{color:var(--text)}.tree-key{color:var(--tree-key);font-weight:500}.tree-key.array-index{color:var(--tree-index)}.tree-key.root-key{color:var(--accent);font-weight:700}.tree-colon,.tree-value{color:var(--muted)}.tree-value.val-string{color:var(--val-string)}.tree-value.val-number{color:var(--val-number)}.tree-value.val-boolean{color:var(--val-boolean)}.tree-value.val-null{color:var(--val-boolean);font-style:italic}.tree-value.val-bracket{color:var(--muted)}.tree-comma{margin-left:0}.doc-icon{margin-left:6px;border:1px solid transparent;background:var(--hover);border-radius:4px;padding:2px 4px;cursor:pointer;opacity:.6;transition:all .15s ease;flex-shrink:0;color:var(--muted);display:inline-flex;align-items:center;justify-content:center;vertical-align:middle}.tree-line:hover .doc-icon{opacity:.9;color:var(--text)}.doc-icon:hover{background:var(--accent-soft);color:var(--accent);border-color:var(--accent);opacity:1;transform:scale(1.06)}.doc-icon:focus-visible{outline:2px solid var(--accent);outline-offset:1px;opacity:1}.doc-icon svg{display:block;width:12px;height:12px;pointer-events:none}.inline-copy-icon{display:inline-block;vertical-align:-1px;margin:0 1px;color:var(--muted)}.tree-children{margin-left:14px;padding-left:8px;border-left:1px dashed var(--border)}.tree-children.collapsed{display:none}.zone-b{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}.zone-b-header{padding:10px 14px;font-weight:600;font-size:13px;background:var(--card-alt);border-bottom:1px solid var(--border)}.variants-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0;background:var(--border);border-top:1px solid var(--border)}.variant{background:var(--card);padding:12px 14px;display:flex;flex-direction:column;gap:6px;min-width:0;border-right:1px solid var(--border);border-bottom:1px solid var(--border)}.variant:nth-child(2n){border-right:none}.variant.variant-filter{grid-column:1 / -1;border-right:none}.variant-label{font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);display:flex;align-items:center;justify-content:space-between}.variant code{font-family:var(--mono);font-size:12.5px;background:var(--card-alt);border:1px solid var(--border);border-radius:6px;padding:8px 10px;min-height:38px;display:flex;align-items:center;word-break:break-all;overflow-wrap:anywhere;cursor:pointer;transition:border-color .12s,background .12s;color:var(--text)}.variant code:hover{border-color:var(--accent);background:var(--accent-soft)}.variant code.empty{color:var(--muted);font-style:italic}.variant-actions{display:flex;gap:6px}.btn-copy{border:1px solid var(--border);background:var(--input-bg);border-radius:6px;padding:4px 8px;font-size:11px;font-weight:600;cursor:pointer;color:var(--muted)}.btn-copy:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}.btn-copy.copied{border-color:#16a34a;color:#16a34a;background:#f0fdf4}[data-theme=dark] .btn-copy.copied{border-color:#22c55e;color:#22c55e;background:#22c55e1f}.zone-c{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;display:flex;flex-direction:column}.zone-c-header{padding:10px 14px;font-weight:600;font-size:13px;background:var(--card-alt);border-bottom:1px solid var(--border)}.path-row{padding:12px 14px;display:flex;align-items:center;gap:10px;border-bottom:1px solid var(--border);background:var(--card)}.path-row label{font-size:13px;font-weight:600;white-space:nowrap}#pathInput{flex:1;border:1px solid var(--border);border-radius:8px;padding:9px 12px;font-family:var(--mono);font-size:13px;outline:none;background:var(--input-bg);color:var(--text)}#pathInput::placeholder{color:var(--muted)}#pathInput:focus{border-color:var(--accent);box-shadow:0 0 0 3px #2563eb1f}[data-theme=dark] #pathInput:focus{box-shadow:0 0 0 3px #60a5fa33}.output-header{padding:8px 14px;font-size:12px;font-weight:600;color:var(--muted);background:var(--card-alt);border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}.output-title-group{display:flex;align-items:center;gap:12px}.output-mode-tabs{display:inline-flex;background:var(--hover);border:1px solid var(--border);border-radius:6px;padding:2px;gap:2px}.mode-tab{background:transparent;border:none;border-radius:4px;font-size:11px;font-weight:600;padding:3px 9px;cursor:pointer;color:var(--muted);transition:all .15s ease}.mode-tab:hover{color:var(--text)}.mode-tab.active{background:var(--card);color:var(--accent);box-shadow:0 1px 2px #0000000f}.output-actions{display:flex;align-items:center;gap:10px}.btn-copy-output{border:1px solid var(--border);background:var(--input-bg);border-radius:5px;padding:3px 9px;font-size:11px;font-weight:600;cursor:pointer;color:var(--muted);transition:all .15s ease}.btn-copy-output:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}.btn-copy-output.copied{border-color:#16a34a;color:#16a34a;background:#16a34a1a}#pathOutput{width:100%;min-height:500px;max-height:600px;border:none;padding:12px 14px;font-family:var(--mono);font-size:13px;line-height:1.6;resize:vertical;outline:none;background:var(--input-bg);color:var(--text)}.hint{font-size:11px;color:var(--muted);font-weight:400}@keyframes inputPulse{0%{box-shadow:0 0 #2563eb73}50%{box-shadow:0 0 0 5px #2563eb40}to{box-shadow:0 0 #2563eb00}}.flash-focus{animation:inputPulse .9s ease-out}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.variant code:focus-visible{border-color:var(--accent);background:var(--accent-soft);outline:2px solid var(--accent);outline-offset:1px}.tree-search-item:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}.seo-content{display:flex;flex-direction:column;gap:20px;margin-top:16px}.seo-intro{text-align:center;padding:16px 8px 4px}.seo-intro h2{font-size:24px;font-weight:700;margin:0 0 8px;color:var(--text);letter-spacing:-.02em}.seo-lead{font-size:14.5px;color:var(--muted);max-width:760px;margin:0 auto;line-height:1.6}.seo-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);content-visibility:auto;contain-intrinsic-size:0 350px}.seo-card h2{margin:0 0 14px;font-size:19px;font-weight:700;color:var(--text);letter-spacing:-.01em}.seo-card p{margin:0 0 12px;line-height:1.65;color:var(--text);font-size:14px}.seo-card p:last-child{margin-bottom:0}.seo-card h3{margin:18px 0 8px;font-size:15.5px;font-weight:600;color:var(--text)}.seo-card h3:first-of-type{margin-top:4px}.seo-card ul{margin:10px 0 0;padding-left:22px;display:flex;flex-direction:column;gap:8px}.seo-card li{font-size:14px;line-height:1.6;color:var(--text)}.seo-card pre{margin:12px 0;padding:14px;background:var(--card-alt);border:1px solid var(--border);border-radius:8px;overflow-x:auto;font-family:var(--mono);font-size:12.5px;line-height:1.6;color:var(--text);white-space:pre}.seo-card pre code{background:none;border:none;padding:0;font-size:inherit;color:inherit}.steps-grid{list-style:none;padding:0;margin:18px 0 0;display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.step-card{background:var(--card-alt);border:1px solid var(--border);border-radius:8px;padding:18px 16px;display:flex;flex-direction:column;gap:12px}.step-badge{width:32px;height:32px;border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;flex-shrink:0}.step-body h3{margin:0 0 8px;font-size:15.5px;font-weight:600;color:var(--text)}.step-body p{margin:0;font-size:13.5px;color:var(--muted);line-height:1.55}.table-responsive{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;margin:16px 0 0;border:1px solid var(--border);border-radius:8px}.cheat-sheet-table{width:100%;border-collapse:collapse;font-size:13px;text-align:left}.cheat-sheet-table caption{padding:10px 14px;font-weight:600;font-size:12.5px;color:var(--muted);background:var(--card-alt);border-bottom:1px solid var(--border);text-align:left}.cheat-sheet-table th{background:var(--card-alt);color:var(--text);font-weight:600;padding:10px 14px;border-bottom:1px solid var(--border);white-space:nowrap}.cheat-sheet-table td{padding:10px 14px;border-bottom:1px solid var(--border);color:var(--text);vertical-align:middle}.cheat-sheet-table tbody tr:last-child td{border-bottom:none}.cheat-sheet-table tbody tr:hover{background:var(--hover)}.cheat-sheet-table code{font-family:var(--mono);font-size:12.5px;background:var(--accent-soft);color:var(--accent);padding:3px 7px;border-radius:4px;border:1px solid var(--border);display:inline-block}[data-theme=light] .cheat-sheet-table code{background:#eff6ff;color:#1d4ed8;border-color:#bfdbfe}.clickable-code{cursor:pointer;transition:all .15s ease;position:relative}.clickable-code:hover{background:var(--accent-soft);color:var(--accent);border-color:var(--accent);transform:translateY(-1px)}.clickable-code:focus-visible{outline:2px solid var(--accent);outline-offset:1px}.btn-try-example{border:1px solid var(--border);background:var(--card);border-radius:5px;padding:3px 9px;font-size:11px;font-weight:600;cursor:pointer;color:var(--accent);transition:all .15s ease;white-space:nowrap}.btn-try-example:hover{background:var(--accent);color:#fff;border-color:var(--accent)}.badge-compat{display:inline-block;padding:2px 8px;border-radius:4px;font-size:11.5px;font-weight:600;white-space:nowrap}.badge-compat.yes{background:#16a34a1f;color:#16a34a;border:1px solid rgba(22,163,74,.3)}[data-theme=dark] .badge-compat.yes{color:#4ade80;background:#22c55e26;border-color:#22c55e59}.badge-compat.info{background:var(--accent-soft);color:var(--accent);border:1px solid var(--accent)}.compatibility-note{margin-top:14px;font-size:13.5px;color:var(--muted);background:var(--card-alt);border:1px solid var(--border);padding:12px 14px;border-radius:8px;line-height:1.55}.use-cases-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px;margin-top:16px}.use-case-card{background:var(--card-alt);border:1px solid var(--border);border-radius:8px;padding:18px 16px;display:flex;flex-direction:column;gap:8px;transition:border-color .15s ease,transform .15s ease}.use-case-card:hover{border-color:var(--accent);transform:translateY(-1px)}.use-case-icon{font-size:24px;line-height:1}.use-case-card h3{margin:0;font-size:15px;font-weight:600;color:var(--text)}.use-case-card p{margin:0;font-size:13px;color:var(--muted);line-height:1.55}.privacy-container{display:flex;align-items:flex-start;gap:16px;padding:16px 18px;background:var(--card-alt);border:1px solid var(--border);border-radius:8px;margin-top:12px}.privacy-icon-wrapper{font-size:32px;line-height:1;flex-shrink:0}.privacy-text p{margin:0 0 10px}.privacy-text p:last-child{margin-bottom:0}.faq-list{margin:14px 0 0;display:flex;flex-direction:column;gap:12px}.faq-item{background:var(--card-alt);border:1px solid var(--border);border-radius:8px;padding:16px 18px}.faq-item h3{margin:0 0 8px;font-size:15.5px;font-weight:600;color:var(--text)}.faq-item p{margin:0;font-size:13.5px;color:var(--muted);line-height:1.6}.faq-item p:last-child{margin-bottom:0}.app-footer{margin-top:20px;padding-top:18px;border-top:1px solid var(--border);font-size:13px;color:var(--muted)}.footer-content{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px}.footer-content p{margin:0}.footer-links{display:flex;gap:16px;flex-wrap:wrap}.footer-links a{color:var(--muted);text-decoration:none;transition:color .15s}.footer-links a:hover{color:var(--accent)}@media (max-width: 900px){.zone-a,.variants-grid{grid-template-columns:1fr}.variant{border-right:none}.app-header{flex-wrap:wrap}}@media (max-width: 768px){.zone-a{grid-template-columns:1fr;gap:16px}.variants-grid,.steps-grid{grid-template-columns:1fr}.path-row{flex-direction:column;align-items:stretch;gap:8px}.path-row label{margin-bottom:2px}.seo-intro h2{font-size:22px}.seo-card{padding:18px 16px}.privacy-container{flex-direction:column;gap:12px}.footer-content{flex-direction:column;align-items:flex-start;gap:12px}}@media (max-width: 640px){.app{padding:12px 10px 24px}.tree-scroll{max-height:380px}.card{min-height:auto}.seo-lead{font-size:14px}.header-lead{font-size:13px}}