:root{--wb-bp-mobile: 640px;--wb-bp-tablet: 768px;--wb-bp-tablet-l: 1024px;--wb-bp-desktop: 1280px;--wb-bp-display: 1920px;--wb-touch-target-mobile: 48px;--wb-touch-target-tablet: 44px;--wb-touch-target-desktop: 40px;--wb-touch-target-display: 64px;--wb-active-touch-target: var(--wb-touch-target-desktop);--wb-toolbar-height-mobile: 56px;--wb-toolbar-width-mobile: 100vw;--wb-toolbar-width-tablet: 56px;--wb-toolbar-width-desktop: 56px;--wb-toolbar-width-display: 72px;--wb-header-height: 48px;--wb-header-height-mobile: 40px;--wb-header-height-display: 56px;--wb-z-canvas: 1;--wb-z-toolbar: 10;--wb-z-mobile-toolbar: 20;--wb-z-header: 30;--wb-z-sheet: 40;--wb-z-dialog: 50;--wb-z-toast: 60;--wb-spacing-mobile: 8px;--wb-spacing-tablet: 12px;--wb-spacing-desktop: 16px;--wb-spacing-display: 24px;--wb-active-spacing: var(--wb-spacing-desktop);--wb-font-size-mobile: 14px;--wb-font-size-tablet: 14px;--wb-font-size-desktop: 14px;--wb-font-size-display: 18px;--wb-safe-area-top: env(safe-area-inset-top, 0px);--wb-safe-area-bottom: env(safe-area-inset-bottom, 0px);--wb-safe-area-left: env(safe-area-inset-left, 0px);--wb-safe-area-right: env(safe-area-inset-right, 0px);--wb-vh: 1vh;--wb-transition-fast: .15s ease;--wb-transition-normal: .25s ease;--wb-card-min: 280px;--wb-card-min-compact: 160px;--wb-replay-btn-play: 38px;--wb-replay-btn-step: 32px;--wb-replay-slider-thumb: 14px;--wb-replay-controls-padding-y: 10px;--wb-replay-controls-padding-x: 20px;--wb-replay-controls-gap: 14px;--wb-replay-controls-height: 56px;--wb-replay-banner-height: 32px;--wb-replay-chapters-width: 240px;--wb-replay-comments-width: 280px}@media(max-width:639px){:root{--wb-active-touch-target: var(--wb-touch-target-mobile);--wb-active-spacing: var(--wb-spacing-mobile);--wb-replay-btn-play: 44px;--wb-replay-btn-step: 36px;--wb-replay-slider-thumb: 20px;--wb-replay-controls-padding-y: 8px;--wb-replay-controls-padding-x: 12px;--wb-replay-controls-gap: 8px;--wb-replay-controls-height: 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var(--line);background:#f4ede066}.calc-presets{display:flex;flex-wrap:wrap;gap:4px}.calc-preset{font-family:JetBrains Mono,monospace;font-size:12px;padding:4px 10px;background:var(--paper);border:1px solid var(--line);border-radius:999px;cursor:pointer;color:var(--ink-2)}.calc-preset:hover{border-color:var(--accent);color:var(--accent)}.calc-preset.active{background:var(--ink);color:var(--paper);border-color:var(--ink)}.calc-input-wrap{flex:1;min-width:200px;display:flex;align-items:center;gap:8px;background:var(--paper);border:1px solid var(--line);border-radius:8px;padding:6px 10px}.calc-input-wrap b{font-family:JetBrains Mono,monospace;font-size:13px;color:var(--ink-3)}.calc-input-wrap input{flex:1;font-family:JetBrains Mono,monospace;font-size:14px;border:0;outline:none;background:transparent;color:var(--ink);min-width:0}.calc-tools{display:flex;flex-wrap:wrap;gap:6px;padding:10px 14px 14px;background:#f4ede066}.calc-tool{display:inline-flex;align-items:center;gap:6px;padding:6px 10px;background:var(--paper);border:1px solid var(--line);border-radius:8px;font-size:12px;font-weight:500;color:var(--ink-2);cursor:pointer;font-family:inherit}.calc-tool:hover{border-color:var(--line-2);color:var(--ink)}.calc-tool.active{background:var(--ink);color:var(--paper);border-color:var(--ink)}.calc-slider{display:flex;align-items:center;gap:10px;padding:6px 10px;background:var(--paper);border:1px solid var(--line);border-radius:8px;font-family:JetBrains Mono,monospace;font-size:11px;color:var(--ink-3);flex:1 1 180px;min-width:160px}.calc-slider label{color:var(--ink-2);white-space:nowrap}.calc-slider input[type=range]{flex:1;height:4px;-webkit-appearance:none;-moz-appearance:none;appearance:none;background:#2b211829;border-radius:2px;outline:none;min-width:0}.calc-slider input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:14px;height:14px;background:var(--accent);border-radius:50%;cursor:pointer;border:2px solid var(--paper)}.calc-slider .calc-slider-val{color:var(--ink);font-variant-numeric:tabular-nums;min-width:28px;text-align:right}.calc-legend{display:flex;flex-wrap:wrap;gap:14px;font-family:JetBrains Mono,monospace;font-size:11px;color:var(--ink-3);padding:10px 14px;border-top:1px solid var(--line);background:#fffaf080}.calc-legend i{display:inline-block;width:18px;height:3px;border-radius:2px;margin-right:6px;vertical-align:middle}.calc-legend .lab{vertical-align:middle}.calc-bounds{display:inline-flex;align-items:center;gap:6px;padding:5px 10px;background:var(--paper);border:1px solid var(--line);border-radius:8px;font-family:JetBrains Mono,monospace;font-size:12px}.calc-bounds label{color:var(--ink-3)}.calc-bounds input{width:56px;font-family:inherit;font-size:12px;border:1px solid var(--line);background:#fffaf099;color:var(--ink);border-radius:5px;padding:3px 6px;outline:none;text-align:center;font-variant-numeric:tabular-nums}.calc-bounds input:focus{border-color:var(--accent);background:#fff}.calc-bounds input::-webkit-outer-spin-button,.calc-bounds input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}.calc-bounds input{-moz-appearance:textfield}.calc-segmented{display:inline-flex;background:var(--paper);border:1px solid var(--line);border-radius:8px;padding:2px;gap:2px}.calc-segmented button{padding:4px 9px;font-family:JetBrains Mono,monospace;font-size:11px;border:0;background:transparent;cursor:pointer;border-radius:6px;color:var(--ink-3)}.calc-segmented button.active{background:var(--ink);color:var(--paper)}.quad-root{font-family:JetBrains Mono,monospace;box-sizing:border-box}.quad-hud{position:absolute;top:6px;left:8px;pointer-events:none;display:flex;flex-direction:column;gap:2px;z-index:2}.quad-line{font-size:12px;line-height:1.4;color:#2b2118;white-space:nowrap}.quad-line span{font-weight:700;color:#c4622a;margin-right:2px}.quad-line.key{font-size:14px;font-weight:700}.quad-line.sub{font-size:10px;color:#7a6a5a}.quad-line.root{font-size:12px;font-weight:700;color:#3b7b9b}.quad-line.root.zero{color:#7a8b3a}.quad-line.root.neg{font-size:11px;font-weight:600;color:#a83a5b}.quad-zoom{position:absolute;bottom:6px;right:6px;display:flex;flex-direction:column;gap:2px;z-index:3}.quad-zoom button{width:22px;height:22px;font-size:14px;font-weight:700;line-height:1;border:1px solid rgba(43,33,24,.2);border-radius:4px;background:#fffaf0e0;color:#5a4a3a;cursor:pointer;display:flex;align-items:center;justify-content:center;padding:0;transition:background .1s}.quad-zoom button:hover{background:#fffaf0;border-color:#c4622a;color:#c4622a}