*{box-sizing:border-box;margin:0;padding:0}:root{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--bg:oklch(17% .012 255);--bg-deep:oklch(13% .012 255);--surface:oklch(22% .013 255);--surface-2:oklch(26% .014 255);--surface-hi:oklch(30% .015 255);--border:oklch(34% .012 255);--border-soft:oklch(28% .011 255);--text:oklch(95% .006 80);--text-2:oklch(72% .012 80);--text-3:oklch(55% .013 80);--text-4:oklch(42% .012 80);--accent:oklch(80% .12 72);--accent-2:oklch(65% .11 72);--accent-hover:oklch(85% .12 72);--accent-soft:oklch(35% .06 72);--accent-glow:oklch(80% .12 72/.15);--danger:oklch(68% .17 30);--danger-bg:oklch(24% .04 20);--danger-bg-hi:oklch(28% .05 20);--info:oklch(72% .1 240);--info-bg:oklch(24% .04 240);--info-bg-hi:oklch(28% .05 240);--ok:oklch(72% .16 150);--ok-bg:oklch(24% .05 150);--ok-bg-hi:oklch(28% .06 150);--warning:oklch(85% .14 90);--warning-bg:oklch(24% .04 80);--tool-active:oklch(78% .12 200);--tool-active-bg:oklch(22% .05 200);--measure:oklch(90% .18 100);--pivot:oklch(65% .22 25);--shadow:0 6px 18px -6px #00000073, 0 1px 3px #0000004d;--shadow-lg:0 24px 48px -12px #0000008c, 0 2px 8px -2px #00000059;--overlay:#0009}[data-theme=paper]{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--bg:oklch(95% .012 80);--bg-deep:oklch(91% .014 80);--surface:oklch(97% .008 80);--surface-2:oklch(93% .012 80);--surface-hi:oklch(89% .014 80);--border:oklch(78% .018 70);--border-soft:oklch(85% .014 70);--text:oklch(22% .02 50);--text-2:oklch(40% .018 50);--text-3:oklch(55% .016 50);--text-4:oklch(65% .014 50);--accent:oklch(58% .16 38);--accent-2:oklch(48% .16 38);--accent-hover:oklch(52% .16 38);--accent-soft:oklch(85% .05 38);--accent-glow:oklch(58% .16 38/.12);--danger:oklch(55% .2 25);--danger-bg:oklch(92% .04 25);--danger-bg-hi:oklch(88% .06 25);--info:oklch(52% .14 240);--info-bg:oklch(92% .04 240);--info-bg-hi:oklch(88% .06 240);--ok:oklch(52% .16 150);--ok-bg:oklch(92% .05 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0;border-color:#0000}.btn-header-signout:hover{color:var(--danger);background:var(--danger-bg)}.saveload-panel{background:var(--bg);border:1px solid var(--border-soft);border-radius:12px;width:460px;max-width:90vw;max-height:85vh;padding:24px;overflow-y:auto}.saveload-header{justify-content:space-between;align-items:center;margin-bottom:16px;display:flex}.saveload-header h2{color:var(--accent);margin:0;font-size:20px}.saveload-success{background:color-mix(in oklch, var(--ok), transparent 90%);border:1px solid var(--ok-bg-hi);color:var(--ok);border-radius:6px;margin-bottom:12px;padding:10px 12px;font-size:13px}.saveload-form{flex-direction:column;gap:14px;display:flex}.saveload-checkbox{color:var(--text-2);cursor:pointer;align-items:center;gap:8px;font-size:13px;display:flex}.saveload-checkbox 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0;font-size:12px;display:flex}.instruction-label{color:var(--accent);flex-shrink:0;min-width:32px;font-weight:700}.instruction-detail{color:var(--text);flex:1}.instruction-miter{color:var(--danger);font-size:11px}.instruction-notes{color:var(--text);white-space:pre-wrap;background:var(--surface);border:1px solid var(--border-soft);border-radius:4px;max-height:200px;padding:8px;font-size:12px;overflow-y:auto}.theme-toggle{background:var(--surface-2);border:1px solid var(--border-soft);border-radius:999px;flex-shrink:0;align-items:center;gap:0;height:28px;padding:2px;display:inline-flex}.theme-seg{height:100%;color:var(--text-2);cursor:pointer;white-space:nowrap;background:0 0;border:none;border-radius:999px;align-items:center;gap:5px;padding:0 11px;font-family:inherit;font-size:12.5px;font-weight:500;line-height:1;transition:color .12s,background .12s;display:inline-flex}.theme-seg:hover{color:var(--text)}.theme-seg.active{background:var(--accent);color:var(--bg-deep);font-weight:600}.theme-seg svg{flex-shrink:0}body,.app-header,.sidebar,.panel,.btn-header,.btn-history{transition:background-color .15s,color .15s,border-color .15s}