:root{--bg: #f5f6f8;--surface: #ffffff;--surface-2: #f0f2f5;--surface-3: #e4e8ee;--border: #dde2ea;--border-strong: #c3cad6;--text: #1a2233;--text-dim: #5b6577;--text-faint: #8a93a3;--accent: #047857;--accent-press: #035c43;--accent-soft: rgba(4, 120, 87, .1);--amber: #b45309;--amber-soft: rgba(180, 83, 9, .1);--red: #c92a2a;--red-soft: rgba(201, 42, 42, .1);--blue: #2563eb;--font-display: "Iowan Old Style", "Palatino Linotype", "Palatino", "Georgia", serif;--font-sans: "Avenir Next", "Segoe UI", "Cantarell", system-ui, sans-serif;--font-mono: "JetBrains Mono", "SF Mono", "Menlo", "Consolas", "Roboto Mono", monospace;--r-sm: 5px;--r-md: 9px;--r-lg: 14px;--sp: 8px;--shadow-1: 0 1px 2px rgba(0, 0, 0, .4);--shadow-2: 0 8px 28px rgba(0, 0, 0, .45);--shadow-pop: 0 18px 50px rgba(0, 0, 0, .6);--maxw: 1480px}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;background:radial-gradient(1200px 700px at 78% -8%,rgba(4,120,87,.05),transparent 60%),radial-gradient(900px 600px at 8% 110%,rgba(37,99,235,.04),transparent 55%),var(--bg);color:var(--text);font-family:var(--font-sans);font-size:15px;line-height:1.5;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}h1,h2,h3,h4{font-family:var(--font-display);font-weight:600;letter-spacing:.2px;margin:0}a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}.dim{color:var(--text-dim)}.faint{color:var(--text-faint)}.eyebrow{text-transform:uppercase;letter-spacing:.16em;font-size:11px;font-weight:600;color:var(--text-faint);font-family:var(--font-sans)}.btn{font-family:var(--font-sans);font-size:14px;font-weight:600;color:var(--text);background:var(--surface-3);border:1px solid var(--border-strong);border-radius:var(--r-md);padding:9px 16px;cursor:pointer;transition:background .16s ease,border-color .16s ease,transform .06s ease}.btn:hover{background:var(--surface-2);border-color:var(--accent)}.btn:active{transform:translateY(1px)}.btn:disabled{opacity:.45;cursor:not-allowed}.btn-accent{background:var(--accent);color:#fff;border-color:var(--accent)}.btn-accent:hover{background:var(--accent-press);border-color:var(--accent-press)}.btn-ghost{background:transparent;border-color:var(--border)}.btn-sm{padding:6px 11px;font-size:13px}.btn-link{background:none;border:none;padding:0;cursor:pointer;font:inherit}.btn-link:hover{opacity:.85}.panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);box-shadow:var(--shadow-1)}.card{background:var(--surface-2);border:1px solid var(--border);border-radius:var(--r-md);padding:16px 18px}.divider{height:1px;background:var(--border);border:0;margin:14px 0}.chip{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;padding:3px 9px;border-radius:999px;border:1px solid var(--border-strong);color:var(--text-dim);background:var(--surface-3)}.chip.green{color:var(--accent);border-color:#35d6a466;background:var(--accent-soft)}.chip.amber{color:var(--amber);border-color:#f1b13b66;background:var(--amber-soft)}.chip.red{color:var(--red);border-color:#f26d6d66;background:var(--red-soft)}input[type=text],input[type=number],textarea,select{font-family:var(--font-sans);font-size:14px;color:var(--text);background:var(--surface-3);border:1px solid var(--border-strong);border-radius:var(--r-sm);padding:8px 10px}input:focus,textarea:focus,select:focus{outline:2px solid var(--accent);outline-offset:1px;border-color:var(--accent)}.gridwrap{overflow:auto;border:1px solid var(--border);border-radius:var(--r-md);background:var(--surface);max-height:62vh}table.grid{border-collapse:separate;border-spacing:0;width:100%;min-width:max-content;font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:13px}table.grid th,table.grid td{border-right:1px solid var(--border);border-bottom:1px solid var(--border);padding:0;height:30px;white-space:nowrap}.grid .gutter{position:sticky;background:var(--surface-2);color:var(--text-faint);text-align:center;font-size:11px;font-weight:600;z-index:2;min-width:30px;padding:0 6px}.grid thead .gutter{top:0;z-index:23}.grid tbody .gutter.rownum{left:0}.grid thead th{position:sticky;top:0;background:var(--surface-2);color:var(--text-dim);z-index:22;padding:0 10px;text-align:right}.grid thead th.collabel{text-align:left}.grid td .cellpad{padding:0 10px;line-height:30px}.grid td.numcell{text-align:right}.grid td.rowlabel{font-family:var(--font-sans);color:var(--text);text-align:left;position:sticky;left:30px;background:var(--surface);z-index:1;font-size:13px;min-width:210px}.grid td.rowlabel.section{color:var(--amber);font-weight:700;text-transform:uppercase;letter-spacing:.08em;font-size:11px}.grid td.given{color:var(--text-dim);background:#0f172109}.grid td.given .cellpad:after{content:""}.grid td.blank{background:transparent}.grid td.input{background:var(--surface);cursor:text;color:var(--text);position:relative}.grid td.input.empty{background:repeating-linear-gradient(45deg,transparent,transparent 6px,rgba(37,99,235,.05) 6px,rgba(37,99,235,.05) 7px)}.grid td.input:hover{background:var(--surface-3)}.grid td.input.active{box-shadow:inset 0 0 0 2px var(--accent);background:var(--surface-3)}.grid td.input input{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;border:0;background:transparent;outline:none;font-family:var(--font-mono);font-size:13px;color:var(--text);text-align:right;padding:0 10px}.grid td.input .sizer{display:block;visibility:hidden;height:30px;line-height:30px;padding:0 10px;white-space:pre;text-align:right;font-family:var(--font-mono);font-size:13px;min-width:3ch;pointer-events:none}.grid td.input.formulacell{color:var(--accent)}.grid td.input.err{color:var(--red)}.grid td.input.checkfail{background:var(--red-soft);box-shadow:inset 0 0 0 2px var(--red)}.grid td.input.checkfail:hover{background:color-mix(in srgb,var(--red) 22%,transparent)}.grid td.input.checkfail input{color:var(--red)}.grid td.input.checkmissing{background:var(--amber-soft);box-shadow:inset 0 0 0 2px var(--amber)}.grid td.input.checkmissing:hover{background:color-mix(in srgb,var(--amber) 22%,transparent)}.grid td.input.checkmissing input{color:var(--amber)}.grid td.input.err input{color:var(--red)}.hint-badge{position:absolute;top:1px;right:1px;z-index:3;display:inline-flex;align-items:center;justify-content:center;width:11px;height:11px;font-family:var(--font-mono);font-size:8px;font-weight:700;line-height:1;border-radius:2px;background:var(--blue);color:var(--surface)}.grid td.frozen,.grid th.frozen,.grid td.input.empty.frozen{background-color:var(--surface)}.grid td.frz-col,.grid th.frz-col{z-index:11}.grid td.frz-row,.grid th.frz-row{z-index:12}.grid td.frz-row.frz-col,.grid th.frz-row.frz-col{z-index:13}.grid td.frz-row-edge,.grid th.frz-row-edge{box-shadow:inset 0 -2px 0 var(--border-strong)}.grid td.frz-col-edge,.grid th.frz-col-edge{box-shadow:inset -2px 0 0 var(--border-strong)}.grid td.frz-row-edge.frz-col-edge,.grid th.frz-row-edge.frz-col-edge{box-shadow:inset -2px 0 0 var(--border-strong),inset 0 -2px 0 var(--border-strong)}.grid td.numcell.selectedcell:not(.picksource){box-shadow:inset 0 0 0 2px var(--blue);background:color-mix(in srgb,var(--blue) 9%,transparent)}.grid td.input.picksource{box-shadow:inset 0 0 0 2px var(--accent)}.gridwrap.picking td.numcell:not(.picksource){cursor:cell}.gridwrap.picking td.numcell:not(.picksource):hover{background-image:linear-gradient(90deg,var(--blue) 50%,transparent 50%),linear-gradient(90deg,var(--blue) 50%,transparent 50%),linear-gradient(0deg,var(--blue) 50%,transparent 50%),linear-gradient(0deg,var(--blue) 50%,transparent 50%);background-repeat:repeat-x,repeat-x,repeat-y,repeat-y;background-size:8px 2px,8px 2px,2px 8px,2px 8px;background-position:0 0,0 100%,0 0,100% 0;animation:marching-ants .5s infinite linear}@keyframes marching-ants{to{background-position:8px 0,-8px 100%,0 -8px,100% 8px}}@media (prefers-reduced-motion: reduce){.gridwrap.picking td.numcell:not(.picksource):hover{animation:none}}.sheettab.pick-origin{box-shadow:0 0 0 1px var(--blue);animation:pick-origin-pulse 1.2s ease-in-out infinite}@keyframes pick-origin-pulse{0%,to{box-shadow:0 0 0 1px var(--blue)}50%{box-shadow:0 0 0 3px color-mix(in srgb,var(--blue) 35%,transparent)}}.pickbanner{display:flex;align-items:flex-start;gap:10px;margin-bottom:12px;padding:9px 14px;font-size:13px;color:var(--text);background:color-mix(in srgb,var(--blue) 12%,var(--surface-2));border:1px solid color-mix(in srgb,var(--blue) 45%,transparent);border-radius:var(--r-sm)}.pickbanner .mono{color:var(--blue);font-weight:700}.pickbanner-dot{width:9px;height:9px;border-radius:50%;background:var(--blue);flex:none;margin-top:5px;animation:pick-origin-pulse 1.2s ease-in-out infinite}.pickbanner-edit{display:flex;align-items:center;gap:6px;padding:4px 8px;border-radius:var(--r-sm);background:var(--surface);border:1px solid color-mix(in srgb,var(--blue) 35%,transparent)}.pickbanner-edit:focus-within{border-color:var(--blue);box-shadow:0 0 0 2px color-mix(in srgb,var(--blue) 25%,transparent)}.pickbanner-eq{flex:none;white-space:nowrap}.pickbanner-input{flex:1;min-width:0;border:none;outline:none;background:transparent;padding:2px 0;font-size:13px;color:var(--text)!important;font-weight:500!important}.grid td.pick-flash{animation:pick-flash .6s ease-out}@keyframes pick-flash{0%{box-shadow:inset 0 0 0 2px var(--blue);background:color-mix(in srgb,var(--blue) 28%,transparent)}to{box-shadow:inset 0 0 0 2px transparent;background:transparent}}@media (prefers-reduced-motion: reduce){.sheettab.pick-origin,.pickbanner-dot{animation:none}.grid td.pick-flash{animation:none;outline:2px solid var(--blue)}}.formulabar.is-empty{opacity:.85}.formulabar.is-readonly .pickbanner-input{color:var(--text-dim)!important}.formulabar .pickbanner-input::placeholder{color:var(--text-faint)}.formulabar:not(.is-editing) .pickbanner-dot{animation:none}.hint-bar{margin-top:10px;padding:0 12px;min-height:36px;display:flex;align-items:center;gap:8px;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--r-sm);font-family:var(--font-mono);font-size:12.5px}.hint-bar-open{flex-direction:column;align-items:stretch;padding:8px 12px;gap:7px}.hint-f{color:var(--amber);font-weight:700;flex:none}.hint-f-dim{opacity:.55}.hint-empty{color:var(--text-faint)}.hint-trigger{-webkit-appearance:none;-moz-appearance:none;appearance:none;background:transparent;border:none;color:var(--text-dim);font-family:var(--font-mono);font-size:12.5px;text-align:left;padding:0;cursor:pointer;flex:1}.hint-trigger:hover{color:var(--amber)}.hint-row{display:flex;align-items:center;gap:8px}.hint-tag{flex:none;font-family:var(--font-sans);font-size:9.5px;font-weight:700;letter-spacing:.09em;text-transform:uppercase;color:var(--text-faint);border:1px solid var(--border);border-radius:3px;padding:1px 6px}.hint-text{color:var(--text-dim);flex:1}.hint-action{flex:none;margin-left:auto;white-space:nowrap}.hint-result{font-family:var(--font-sans);font-size:12.5px;padding:6px 9px;border-radius:var(--r-sm);border:1px solid var(--border)}.hint-result-ok{color:var(--accent);border-color:#35d6a466;background:#35d6a41a}.hint-result-bad{color:var(--red);border-color:#f26d6d66;background:var(--red-soft)}.hint-result-wait{color:var(--amber);border-color:#f1b13b66;background:var(--amber-soft)}.fillhandle{position:absolute;right:0;bottom:0;width:8px;height:8px;background:var(--accent);border:1px solid var(--surface);cursor:crosshair;opacity:0;z-index:2}.grid td.input:hover .fillhandle,.grid td.input.fill-source .fillhandle{opacity:1}.grid td.input.fill-source{box-shadow:inset 0 0 0 2px var(--accent)}.grid td.input.fill-target{box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--accent) 55%,transparent);background:color-mix(in srgb,var(--accent) 12%,var(--surface))}.grid td.numcell.in-range{background:color-mix(in srgb,var(--blue) 13%,transparent)}.gridwrap .grid td.numcell.in-range .fillhandle{opacity:1}.status-dot{display:inline-flex;align-items:center;gap:7px;font-family:var(--font-mono);font-size:12.5px}.status-dot .ico{width:16px;height:16px;display:inline-grid;place-items:center;border-radius:4px;font-size:11px;font-weight:700}.status-dot.tie{color:var(--accent)}.status-dot.tie .ico{background:var(--accent-soft);color:var(--accent)}.status-dot.break{color:var(--red)}.status-dot.break .ico{background:var(--red-soft);color:var(--red)}.status-dot.pending{color:var(--text-faint)}.status-dot.pending .ico{background:var(--surface-3);color:var(--text-faint)}.tagline{font-style:italic;text-align:center;margin-top:24px;padding-top:16px;border-top:1px solid var(--border);color:var(--text-dim);font-size:.9rem;letter-spacing:.5px;font-family:var(--font-display)}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#04060ab8;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);display:grid;place-items:center;z-index:50;padding:24px;animation:fade .2s ease}.page-backdrop{background:var(--bg);-webkit-backdrop-filter:none;backdrop-filter:none}.modal{width:min(640px,100%);max-height:88vh;overflow:auto;background:var(--surface);border:1px solid var(--border-strong);border-radius:var(--r-lg);box-shadow:var(--shadow-pop);padding:26px 28px}.modal.dt-modal{width:min(780px,100%)}.dt-select,.dt-input{width:100%}table.dt-result{margin-top:4px}table.dt-result th{color:var(--text-dim);font-weight:600;white-space:nowrap}table.dt-result td{text-align:right}table.dt-result td.dt-base{box-shadow:inset 0 0 0 2px var(--accent);background:var(--accent-soft);color:var(--accent);font-weight:700}@keyframes rise{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}@keyframes fade{0%{opacity:0}to{opacity:1}}.reveal{animation:rise .5s cubic-bezier(.2,.7,.2,1) both}.reveal.d1{animation-delay:.05s}.reveal.d2{animation-delay:.12s}.reveal.d3{animation-delay:.19s}.reveal.d4{animation-delay:.26s}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.001ms!important;transition-duration:.001ms!important}}::-webkit-scrollbar{width:11px;height:11px}::-webkit-scrollbar-thumb{background:var(--surface-3);border-radius:8px;border:2px solid var(--surface)}::-webkit-scrollbar-thumb:hover{background:var(--border-strong)}::-webkit-scrollbar-track{background:transparent}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}