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64%,transparent)}.gutter-line.has-diagnostic{background:var(--warn-soft);color:var(--warn);font-weight:800;box-shadow:inset 3px 0 0 var(--warn)}#source{position:absolute;inset:0;z-index:3;width:100%;height:100%;resize:none;border:0;outline:0;padding:16px 16px 16px calc(var(--editor-gutter-width) + var(--editor-code-offset));overflow:auto;background:transparent;color:transparent;caret-color:var(--ink);font:14px/var(--editor-line-height) ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;tab-size:4;white-space:pre}#source::selection{background:color-mix(in srgb,var(--accent) 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srgb,var(--warn-soft) 92%,var(--paper));box-shadow:0 4px 12px color-mix(in srgb,var(--warn) 10%,transparent);color:var(--ink);font:11px/1.35 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}.source-diagnostic-message{min-width:0;overflow:hidden;color:var(--ink);text-overflow:ellipsis;white-space:nowrap}.stmt-declaration{--stmt-color: var(--macaron-mint);--stmt-bg: color-mix(in srgb, var(--macaron-mint) 5%, var(--paper))}.stmt-assignment{--stmt-color: var(--macaron-sky);--stmt-bg: color-mix(in srgb, var(--macaron-sky) 5%, var(--paper))}.stmt-print{--stmt-color: var(--macaron-lemon);--stmt-bg: color-mix(in srgb, var(--macaron-lemon) 6%, var(--paper))}.stmt-scan{--stmt-color: var(--macaron-aqua);--stmt-bg: color-mix(in srgb, var(--macaron-aqua) 5%, var(--paper))}.stmt-if{--stmt-color: var(--macaron-peach);--stmt-bg: color-mix(in srgb, var(--macaron-peach) 5%, var(--paper))}.stmt-while{--stmt-color: var(--macaron-lavender);--stmt-bg: color-mix(in srgb, var(--macaron-lavender) 5%, 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var(--accent));font-size:12px;font-weight:700}.runtime-action:disabled{opacity:.5;cursor:not-allowed}.runtime-stop{color:var(--warn);border-color:color-mix(in srgb,var(--warn) 30%,var(--line))}.runtime-run{color:var(--paper);border-color:var(--stage-color, var(--accent));background:var(--stage-color, var(--accent))}.runtime-run:hover{color:var(--paper);background:color-mix(in srgb,var(--stage-color, var(--accent)) 86%,var(--ink))}.runtime-tools{border:1px solid color-mix(in srgb,var(--stage-color, var(--accent)) 18%,var(--line));border-radius:7px;padding:9px 10px;background:color-mix(in srgb,var(--stage-color, var(--accent)) 6%,var(--paper))}.runtime-tools code{min-width:0;overflow-wrap:anywhere;color:var(--ink);font-size:11px}.runtime-notes{display:grid;gap:6px}.runtime-notes p{margin:0;color:var(--muted);font-size:12px;line-height:1.45}@media(max-width:860px){.runtime-input-row,.runtime-control-row{grid-template-columns:1fr}.runtime-control-row{display:grid}}.ir-forms{display:grid;gap:14px;padding:12px}.ir-form-section{display:grid;gap:8px;min-width:0}.ir-form-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px}.ir-form-head strong{color:var(--stage-color, var(--accent));font-size:12px}.ir-form-head span{color:var(--muted);font-size:11px;white-space:nowrap}.quadruple-table,.triple-table{border:1px solid var(--line);border-left:5px solid var(--stage-color, var(--accent));border-radius:7px;overflow:hidden}.quadruple-table td,.triple-table td{cursor:pointer}.quad-row{--stmt-color: var(--macaron-bluegray);--stmt-bg: var(--paper-soft);background:var(--paper)}.quad-row:hover{background:var(--stmt-bg)}.quad-row.selected{background:var(--selected);box-shadow:inset 3px 0 0 var(--stmt-color)}.quad-row td:first-child{color:var(--muted);font-weight:700}.quad-row code{white-space:nowrap}.quadruple-table.compact{font-size:11px}.statement-flow-list{position:relative;display:grid;gap:8px;padding:12px}.statement-flow-list:before{content:"";position:absolute;top:20px;bottom:20px;left:27px;width:2px;background:color-mix(in srgb,var(--stage-color, var(--accent)) 28%,var(--line))}.statement-flow-item{position:relative;width:100%;height:auto;min-height:54px;display:grid;grid-template-columns:32px minmax(0,1fr) auto;gap:10px;align-items:center;border:1px solid var(--line);border-left:5px solid var(--stmt-color);border-radius:8px;padding:8px 10px 8px 7px;background:var(--paper);text-align:left}.statement-flow-item:hover{border-color:color-mix(in srgb,var(--stmt-color) 48%,var(--line));box-shadow:0 0 0 3px color-mix(in srgb,var(--stmt-color) 14%,transparent)}.statement-flow-item.selected{background:var(--selected);border-color:var(--stmt-color);box-shadow:0 0 0 2px color-mix(in srgb,var(--stmt-color) 44%,transparent)}.statement-flow-index{display:inline-flex;align-items:center;justify-content:center;width:24px;height:24px;border-radius:50%;background:var(--stmt-color);color:var(--paper);font:11px/1 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-weight:700}.statement-flow-main{min-width:0;display:grid;gap:2px}.statement-flow-main strong{color:var(--stmt-color);font-size:12px}.statement-flow-main code{min-width:0;overflow:hidden;color:var(--ink);font-size:12px;text-overflow:ellipsis;white-space:nowrap}.statement-flow-meta{color:var(--muted);font-size:11px;white-space:nowrap}.ast-tree{min-width:max-content;padding:12px}.ast-tree-svg{display:block;min-width:100%;overflow:visible}.ast-link{fill:none;stroke:color-mix(in srgb,var(--stage-color, var(--accent)) 30%,var(--line));stroke-width:1.5;stroke-linecap:round}.ast-link.expr-link{stroke:color-mix(in srgb,var(--macaron-bluegray) 42%,var(--line))}.ast-node{overflow:visible}.ast-node-shell{width:172px;height:72px;display:grid;place-items:center}.ast-card{position:relative;z-index:1;width:150px;height:auto;min-height:48px;display:grid;align-content:center;gap:3px;border:1px solid var(--line);border-top:4px solid var(--stmt-color, var(--stage-color));border-radius:8px;padding:8px 9px;background:var(--paper);color:var(--ink);text-align:center;box-shadow:0 3px 10px var(--sketch-shadow)}button.ast-card:hover{border-color:var(--stmt-color);box-shadow:0 0 0 3px color-mix(in srgb,var(--stmt-color) 14%,transparent)}.ast-card.selected{background:var(--selected);border-color:var(--stmt-color)}.ast-card.program-card{--stmt-color: var(--stage-color)}.ast-card.expr-card{--stmt-color: var(--macaron-bluegray);background:var(--paper-soft)}.ast-card strong{font-size:12px}.ast-card span{overflow:hidden;color:var(--muted);font:11px/1.25 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;text-overflow:ellipsis;white-space:nowrap}.ast-edge-label{display:inline-flex;align-items:center;justify-content:center;min-width:34px;max-width:70px;min-height:18px;padding:1px 5px;border-radius:4px;border:1px solid color-mix(in srgb,var(--line) 72%,transparent);background:var(--paper);color:var(--muted);font-size:10px;font-weight:700;line-height:1.2;white-space:nowrap}.optimization-view{display:grid;gap:12px;padding:12px}.optimization-hint{border:1px solid color-mix(in srgb,var(--stage-color, var(--accent)) 18%,var(--line));border-radius:7px;padding:8px 10px;background:color-mix(in srgb,var(--stage-color, var(--accent)) 8%,var(--paper));color:var(--muted);font-size:12px;line-height:1.45}.optimization-pass{display:grid;gap:8px}.optimization-summary{display:flex;flex-wrap:wrap;gap:8px}.optimization-summary span{display:inline-flex;align-items:center;min-height:24px;border:1px solid var(--line);border-radius:6px;padding:0 8px;background:var(--paper);color:var(--muted);font-size:11px;font-weight:600}.optimization-block{display:grid;gap:10px;border:1px solid color-mix(in srgb,var(--stage-color, var(--accent)) 18%,var(--line));border-radius:8px;padding:10px;background:color-mix(in srgb,var(--stage-color, var(--accent)) 5%,var(--paper))}.optimization-block-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.optimization-block-head div{display:grid;gap:2px}.optimization-block-head strong{color:var(--stage-color, var(--accent));font-size:13px}.optimization-block-head span,.optimization-block-head em{color:var(--muted);font-size:11px;font-style:normal}.optimization-block-grid{display:grid;gap:10px}.optimization-pass header{display:grid;grid-template-columns:26px minmax(0,1fr) auto;align-items:center;gap:8px}.optimization-pass header span{display:inline-flex;align-items:center;justify-content:center;height:22px;border-radius:5px;background:color-mix(in srgb,var(--stage-color, 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6px;background:var(--paper);color:var(--ink);font-size:11px;line-height:1.2;overflow-wrap:anywhere}.optimization-lines{display:grid;gap:4px}.optimization-line{width:100%;height:auto;min-height:30px;display:grid;grid-template-columns:42px minmax(0,1fr);gap:8px;align-items:start;border:1px solid var(--line);border-left:4px solid var(--stmt-color);border-radius:6px;padding:5px 8px;background:var(--stmt-bg);text-align:left}.optimization-line.changed{background:color-mix(in srgb,var(--macaron-lemon) 8%,var(--paper))}.optimization-line.candidate{background:color-mix(in srgb,var(--macaron-lavender) 7%,var(--paper))}.optimization-line.selected{box-shadow:0 0 0 2px var(--stmt-color)}.optimization-line-no,.optimization-note{color:var(--muted);font-size:11px}.optimization-line code{min-width:0;overflow:hidden;font-size:12px;overflow-wrap:anywhere;white-space:normal}.optimization-note{grid-column:2}.optimization-derivation{grid-column:2;display:grid;gap:6px;min-width:0;border-top:1px solid color-mix(in srgb,var(--stmt-color) 24%,transparent);padding-top:6px}.optimization-rule{width:fit-content;max-width:100%;border:1px solid color-mix(in srgb,var(--stmt-color) 28%,transparent);border-radius:5px;padding:2px 6px;background:color-mix(in srgb,var(--stmt-color) 10%,var(--paper));color:var(--ink);font-size:11px;font-weight:700}.optimization-equation{display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);gap:6px;align-items:center;min-width:0}.optimization-equation span{color:var(--stmt-color);font-weight:800}.optimization-equation code{border:1px solid var(--line);border-radius:5px;padding:4px 6px;background:var(--paper);color:var(--ink)}.optimization-derivation ol{display:grid;gap:3px;margin:0;padding-left:18px;color:var(--muted);font-size:11px;line-height:1.45}.optimization-dag{display:grid;gap:12px;border:1px solid color-mix(in srgb,var(--stage-color, var(--accent)) 18%,var(--line));border-radius:10px;padding:12px;background:radial-gradient(circle at 20% 20%,color-mix(in srgb,var(--stage-color, var(--accent)) 8%,var(--paper)) 0%,transparent 40%),linear-gradient(180deg,var(--paper) 0%,var(--paper) 100%)}.optimization-dag-head{display:flex;align-items:center;justify-content:space-between;gap:10px}.optimization-dag-head strong{font-size:12px}.optimization-dag-head span{color:var(--muted);font-size:11px}.optimization-dag-svg{width:100%;height:auto;overflow:visible}.optimization-dag-edges{color:color-mix(in srgb,var(--stage-color, var(--accent)) 68%,var(--macaron-bluegray))}.optimization-dag-edge{stroke:currentColor;stroke-width:1.8}.optimization-dag-edge-label{fill:var(--muted);font-size:10px;font-weight:700;text-transform:uppercase}.optimization-dag-node{height:100%;position:relative;display:flex;align-items:center;gap:12px;padding:2px 8px 2px 0;background:transparent}.optimization-dag-node-operator{flex:0 0 14px;text-align:right;color:var(--ink);font:700 14px/1.1 Times New Roman,Georgia,serif;pointer-events:none}.optimization-dag-node-circle{width:44px;height:44px;flex:0 0 44px;display:grid;place-items:center;border:2px solid var(--macaron-bluegray);border-radius:999px;background:var(--paper);box-shadow:0 8px 18px var(--sketch-shadow)}.optimization-dag-node.kind-binary .optimization-dag-node-circle,.optimization-dag-node.kind-unary .optimization-dag-node-circle{border-color:color-mix(in srgb,var(--stage-color, var(--accent)) 52%,var(--macaron-bluegray));background:color-mix(in srgb,var(--stage-color, var(--accent)) 12%,var(--paper))}.optimization-dag-node.kind-const .optimization-dag-node-circle{border-style:dashed}.optimization-dag-node-kind{display:none}.optimization-dag-node-id{font-size:14px;line-height:1;font-weight:700}.optimization-dag-node-text{flex:1 1 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