:root{color-scheme:light;--bg: #f5f5f7;--surface: #ffffff;--surface-2: #f0f0f2;--surface-3: #e8e8ed;--surface-translucent: rgba(255, 255, 255, .92);--border: #e5e5ea;--border-strong: #c7c7cc;--text: #1d1d1f;--muted: #515154;--faint: #6e6e73;--accent: #0071e3;--accent-hover: #0077ed;--accent-ink: #ffffff;--accent-text: #0071e3;--accent-ring: rgba(0, 113, 227, .3);--danger: #ff3b30;--danger-bg: rgba(255, 59, 48, .08);--ok: #34c759;--info: #007aff;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .06);--shadow-md: 0 4px 16px rgba(0, 0, 0, .08);--radius: 10px;--radius-sm: 7px;--font-ui: "IBM Plex Sans", "Helvetica Neue", sans-serif;--font-mono: "JetBrains Mono", "SF Mono", monospace}:root[data-theme=dark]{color-scheme:dark;--bg: #0b0b0d;--surface: #1d1d1f;--surface-2: #242426;--surface-3: #2c2c2e;--surface-translucent: rgba(29, 29, 31, .92);--border: #35353a;--border-strong: #48484c;--text: #f5f5f7;--muted: #a1a1a6;--faint: #8e8e93;--accent: #0a84ff;--accent-hover: #409cff;--accent-ink: #ffffff;--accent-text: #409cff;--accent-ring: rgba(10, 132, 255, .35);--danger: #ff453a;--danger-bg: rgba(255, 69, 58, .12);--ok: #30d158;--info: #0a84ff;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .3);--shadow-md: 0 6px 20px rgba(0, 0, 0, .35)}*{box-sizing:border-box}html,body{height:100%;margin:0}body{font-family:var(--font-ui);font-size:14px;line-height:1.5;color:var(--text);background:var(--bg);transition:background-color .2s ease,color .2s ease}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important}}#app{display:grid;grid-template-rows:auto 1fr auto;height:100vh;height:100dvh;gap:12px;padding:12px 16px 0}.mono{font-family:var(--font-mono)}:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}button,select,label.toggle,label.control{cursor:pointer}.masthead{display:flex;align-items:center;gap:12px;padding:2px 2px 10px;border-bottom:1px solid 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svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}:root[data-theme=dark] .only-light,:root:not([data-theme=dark]) .only-dark{display:none}main{display:grid;grid-template-columns:minmax(0,1fr) 420px;gap:12px;min-height:0}.stage{display:flex;flex-direction:column;gap:10px;min-height:0}.field-wrap{flex:1;min-height:0;display:flex;align-items:center;justify-content:center;position:relative}#field{border-radius:var(--radius);border:1px solid var(--border);background:var(--surface);box-shadow:var(--shadow-sm);cursor:crosshair}.plate{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm);transition:background-color .2s ease,border-color .2s ease}.controls{display:flex;align-items:center;flex-wrap:wrap;gap:10px;padding:10px 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0;padding-left:18px;line-height:1.6}.path-import{font-size:12px;color:var(--muted)}.path-import summary{cursor:pointer;width:fit-content}.path-import-hint{margin:6px 0;line-height:1.5}.path-import textarea{width:100%;min-height:110px;resize:vertical;box-sizing:border-box;padding:8px;font-size:11.5px;line-height:1.5;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg);color:var(--text)}.path-import textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 2px var(--accent-ring)}.path-import-actions{display:flex;align-items:flex-start;gap:10px;margin-top:6px}.path-import-notes{flex:1;white-space:pre-wrap;font-size:11px;line-height:1.5;color:var(--faint)}.btn:disabled{opacity:.5;cursor:not-allowed}.path-row input[type=number]{width:64px}.path-row input.path-theta{width:50px}