:root{--primary:#463cff;--primary-subtle:#f0f3ff;--fg:#06062d;--muted:#70708f;--inv:#fff;--bg:#fff;--surface:#f7f7f8;--border:#cfcfda;--border-sub:#ebebef;--plural:#f27e02;--plural-bg:#fff5eb;--plural-border:#ffb566;--select:#1485f5;--select-bg:#ebf5ff;--select-border:#85c2ff;--key:#9292aa;--key-bg:#f7f7f8;--text-badge:#70708f;--text-badge-bg:#ebebef;--ok:#4fb04f;--ok-bg:#f0faf0;--ok-border:#95d095;--info-bg:#ebf5ff;--info-border:#85c2ff;--info-text:#06376b;--err-bg:#ffedeb;--err-border:#ff988f;--err-text:#660a00;--radius:8px;--shadow:0 2px 4px #00000024;color:var(--fg);font-synthesis:none;text-rendering:optimizelegibility;font-family:Montserrat,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box;margin:0}body{background:#e8e8ec;min-width:320px}button,textarea,input,select{font:inherit}.app-shell{flex-direction:column;gap:16px;min-height:100vh;padding:24px;display:flex}.app-shell.centered{justify-content:center;align-items:center}.icu-shell{background:var(--bg);border:1px solid var(--border);width:100%;max-width:1440px;box-shadow:var(--shadow);border-radius:12px;margin:0 auto;overflow:hidden}.icu-topbar{background:var(--surface);border-bottom:1px solid var(--border-sub);color:var(--muted);padding:10px 16px;font-size:14px}.icu-body{background:var(--primary-subtle);grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:0;display:grid}.col{min-width:0;min-height:720px;padding:20px}.col-left{border-right:1px solid var(--border-sub);background:var(--bg)}.col-right{background:var(--bg)}.col-header{justify-content:space-between;align-items:center;gap:12px;min-height:32px;margin-bottom:20px;display:flex}.col-title{font-size:20px;font-weight:600}.locale-select{max-width:70%;color:var(--fg);border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);cursor:pointer;padding:6px 10px;font-size:14px;font-weight:600}.locale-select:hover,.locale-select:focus{border-color:var(--muted);outline:none}.locale-display{color:var(--muted);font-size:14px;font-weight:600}.section-label{letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin-bottom:8px;font-size:11px;font-weight:700}.source-input-pane>.section-label{align-items:center;min-height:28px;margin-bottom:16px;display:flex}.raw-box{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);margin-bottom:24px;padding:4px}.raw-input{resize:vertical;width:100%;min-height:96px;color:var(--fg);background:0 0;border:0;border-radius:6px;outline:none;padding:10px;font-family:JetBrains Mono,ui-monospace,SFMono-Regular,monospace;font-size:12px;line-height:1.6;display:block}.parsed-panel{border:1px solid var(--border-sub);border-radius:var(--radius);background:var(--surface);padding:16px}.parsed-title{letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin-bottom:16px;font-size:11px;font-weight:700}.tree{font-size:13px;overflow:auto}.tree-node{position:relative}.tree-node-plural{--tree-accent:var(--plural)}.tree-node-select{--tree-accent:var(--select)}.tree-node-selectordinal{--tree-accent:#ab47bc}.tree-row{flex-wrap:wrap;align-items:center;gap:8px;padding:4px 0;display:flex}.tree-children{border-left:3px solid var(--tree-accent,var(--border-sub));margin-left:20px;padding-left:16px}.tree-node .case-category{color:var(--tree-accent,var(--muted))}.tag{white-space:nowrap;border:1px solid;border-radius:4px;align-items:center;height:22px;padding:0 8px;font-size:11px;font-weight:600;display:inline-flex}.tag-plural,.tag-selectordinal{background:var(--plural-bg);color:#613200;border-color:var(--plural-border)}.tag-select{background:var(--select-bg);color:var(--info-text);border-color:var(--select-border)}.tag-key{background:var(--key-bg);color:var(--muted);border-color:var(--border)}.tag-text{background:var(--text-badge-bg);color:var(--text-badge);border-color:var(--border-sub)}.tag-var{color:var(--select);font-family:JetBrains Mono,ui-monospace,monospace;font-size:11px}.tag-quote{color:var(--fg);font-size:12px}.tag-muted{color:var(--muted);font-size:11px}.edit-header{justify-content:space-between;align-items:center;gap:12px;margin-bottom:16px;display:flex}.edit-title{letter-spacing:.06em;text-transform:uppercase;color:var(--muted);font-size:11px;font-weight:700}.hint{color:var(--muted);font-size:12px}.edit-header-actions{align-items:center;gap:10px;display:flex}.edit-tree{border:1px solid var(--border-sub);border-radius:var(--radius);background:var(--surface);padding:16px}.nodes-list{flex-direction:column;gap:10px;display:flex}.target-node{background:var(--bg);border:1px solid var(--border-sub);border-left:3px solid #0000;border-radius:6px;padding:10px}.target-node.literal-node{background:0 0;border:0;padding:0}.target-node.argument-node{border-left-color:var(--select);align-items:center;gap:8px;display:flex}.target-node.plural-node{border-left-color:var(--plural)}.target-node.select-node{border-left-color:var(--select)}.target-node.selectordinal-node{border-left-color:#ab47bc}.node-type-badge{background:var(--text-badge-bg);color:var(--text-badge);border-radius:4px;padding:2px 8px;font-size:11px;font-weight:600;display:inline-block}.node-type-badge.variable{background:var(--select-bg);color:var(--info-text)}.node-type-badge.plural{background:var(--plural-bg);color:#8a4b00}.node-type-badge.select{background:var(--select-bg);color:var(--info-text)}.node-type-badge.ordinal{color:#8e24aa;background:#ab47bc24}.node-value.variable{color:var(--select);font-family:JetBrains Mono,ui-monospace,monospace;font-size:13px}.node-card-header{border-bottom:1px solid var(--border-sub);align-items:center;gap:8px;margin-bottom:10px;padding-bottom:8px;display:flex}.node-card-header .variable-name{color:var(--muted);font-family:JetBrains Mono,ui-monospace,monospace;font-size:13px}.plural-placeholder-hint{color:var(--muted);white-space:nowrap;margin-left:auto;font-size:11px}.offset-badge{background:var(--text-badge-bg);color:var(--muted);border-radius:4px;padding:2px 8px;font-size:11px}.cases-list{flex-direction:column;gap:6px;display:flex}.case-item{background:var(--surface);border-radius:6px;align-items:flex-start;gap:8px;padding:6px;display:flex}.case-category{background:var(--bg);border:1px solid var(--border-sub);min-width:56px;color:var(--plural);text-align:center;border-radius:4px;flex-shrink:0;padding:5px 8px;font-family:JetBrains Mono,ui-monospace,monospace;font-size:11px;font-weight:600}.case-toggle{cursor:pointer;justify-content:space-between;align-items:center;gap:8px;display:inline-flex}.case-toggle:hover{border-color:var(--muted)}.case-toggle:focus-visible{outline:2px solid var(--primary);outline-offset:2px}.case-toggle-arrow{font-size:12px;line-height:1}.case-item.collapsed .case-content,.case-item.collapsed .remove-case-btn{display:none}.select-node>.cases-list .case-category{color:var(--select)}.selectordinal-node>.cases-list .case-category{color:#8e24aa}.case-content{flex-direction:column;flex:1;gap:6px;min-width:0;display:flex}.case-input,.literal-node .literal-input{background:var(--bg);border:1px solid var(--border);width:100%;min-height:32px;color:var(--fg);resize:none;border-radius:6px;outline:none;padding:6px 10px;font-family:JetBrains Mono,ui-monospace,monospace;font-size:13px;line-height:1.5;overflow:hidden}.case-input::placeholder,.literal-node .literal-input::placeholder{color:var(--muted)}.case-input:hover,.literal-node .literal-input:hover{border-color:var(--muted)}.case-input:focus,.literal-node .literal-input:focus{border-color:var(--primary);box-shadow:0 0 0 2px var(--primary-subtle)}.remove-case-btn{width:24px;height:24px;color:var(--muted);cursor:pointer;background:0 0;border:0;border-radius:4px;flex-shrink:0;padding:0;font-size:16px;line-height:1}.remove-case-btn:hover{background:var(--err-bg);color:var(--err-text)}.add-case-row{border-top:1px dashed var(--border-sub);align-items:center;gap:8px;margin-top:10px;padding-top:10px;display:flex}.add-case-label{color:var(--muted);font-size:12px}.add-case-input{background:var(--bg);border:1px solid var(--border);width:80px;color:var(--fg);appearance:textfield;border-radius:6px;outline:none;padding:6px 8px;font-family:JetBrains Mono,ui-monospace,monospace;font-size:13px}.add-case-input::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}.add-case-input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}.add-case-input:focus{border-color:var(--primary)}.add-case-btn{background:var(--bg);border:1px solid var(--primary);color:var(--primary);cursor:pointer;border-radius:6px;padding:6px 10px;font-size:12px;font-weight:600}.add-case-btn:hover{background:var(--primary-subtle)}.btn{border-radius:var(--radius);border:1px solid var(--border);background:var(--bg);height:36px;color:var(--fg);cursor:pointer;justify-content:center;align-items:center;padding:0 14px;font-size:14px;font-weight:600;display:inline-flex}.btn:disabled{cursor:not-allowed;opacity:.5}.btn-outline{border-color:var(--primary);color:var(--primary)}.btn-primary{background:var(--primary);color:var(--inv);border-color:var(--primary);height:44px;padding:0 20px}.btn-cancel{height:44px;padding:0 20px}.btn-ghost{color:var(--primary);cursor:pointer;background:0 0;border:none;height:32px;padding:0 8px;font-size:13px;font-weight:600}.tiny-button{border:1px solid var(--border);background:var(--bg);height:28px;color:var(--fg);cursor:pointer;border-radius:6px;align-items:center;padding:0 10px;font-size:12px;font-weight:600;display:inline-flex}.tiny-button:hover:not(:disabled){background:var(--surface)}.tiny-button.muted{color:var(--muted)}.tiny-button.danger{color:#bd1c0a;border-color:var(--err-border)}.tiny-button:disabled{cursor:not-allowed;opacity:.45}.icon-btn{border:1px solid var(--border);background:var(--bg);width:24px;height:24px;color:var(--muted);cursor:pointer;border-radius:6px;justify-content:center;align-items:center;font-size:14px;line-height:1;display:inline-flex}.icon-btn.danger:hover:not(:disabled){color:#bd1c0a;border-color:var(--err-border)}.icon-btn:disabled{cursor:not-allowed;opacity:.4}.output-section{border:1px solid var(--border-sub);border-radius:var(--radius);background:var(--surface);flex-direction:column;gap:20px;margin:20px;padding:20px;display:flex}.output-section-title{color:var(--fg);font-size:20px;font-weight:600}.preview-section,.result-section{margin-top:20px}.output-section .preview-section,.output-section .result-section{margin-top:0}.output-section .preview-box,.output-section .result-box{background:var(--bg)}.preview-box,.result-box{border:1px solid var(--border-sub);border-radius:var(--radius);background:var(--surface);padding:14px 16px}.preview-box{max-height:320px;overflow-y:auto}.preview-row{gap:8px;padding:5px 0;font-family:JetBrains Mono,ui-monospace,monospace;font-size:13px;display:flex}.preview-label{color:var(--muted)}.preview-error{color:#bd1c0a}.result-header{justify-content:space-between;align-items:center;margin-bottom:8px;display:flex}.result-text{color:var(--fg);word-break:break-all;font-family:JetBrains Mono,ui-monospace,monospace;font-size:11px;line-height:1.65}.result-text.placeholder{color:var(--muted)}.validation-list{gap:6px;margin-bottom:12px;display:grid}.validation-item{border-radius:6px;padding:8px 10px;font-size:12px}.validation-item.error{background:var(--err-bg);border:1px solid var(--err-border);color:var(--err-text)}.validation-item.warning{background:var(--plural-bg);border:1px solid var(--plural-border);color:#613200}.empty-box{border:1px dashed var(--border);border-radius:var(--radius);color:var(--muted);padding:16px;font-size:13px}.error-box{background:var(--err-bg);border:1px solid var(--err-border);border-radius:var(--radius);color:var(--err-text);gap:12px;padding:16px;font-size:14px;display:flex}.error-dot{background:#bd1c0a;border-radius:50%;flex-shrink:0;width:16px;height:16px;margin-top:2px}.icu-body.error-body{min-height:200px;padding:24px;display:block}.error-actions{gap:12px;margin-top:16px;display:flex}.footer-actions{border-top:1px solid var(--border-sub);background:var(--surface);justify-content:flex-end;gap:12px;padding:16px 20px;display:flex}.status{border-radius:var(--radius);width:100%;max-width:1440px;margin:0 auto;padding:10px 14px;font-size:13px}.status.info{background:var(--info-bg);border:1px solid var(--info-border);color:var(--info-text)}.status.error{background:var(--err-bg);border:1px solid var(--err-border);color:var(--err-text)}.status.success{background:var(--ok-bg);border:1px solid var(--ok-border);color:#1f471f}.status code{font-family:JetBrains Mono,ui-monospace,monospace;font-size:12px}.skeleton{background:var(--border-sub);border-radius:6px;animation:1.4s ease-in-out infinite pulse}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}@media (width<=980px){.icu-body{grid-template-columns:1fr}.col-left{border-right:0;border-bottom:1px solid var(--border-sub)}}