:root{--muted:var(--ink-2);--line:var(--rule);--tile:#e8e5de;--pink:var(--accent);--pink-ink:#b3441a;--blue:var(--accent);--warn:#9a5800;--on-pink:var(--ink);--f-display:var(--sans);--f-body:var(--sans);--f-mono:var(--mono);--pa:.7071}body{-webkit-font-smoothing:antialiased}button{font:inherit;color:inherit}:focus-visible{outline:2px solid var(--blue);outline-offset:2px}.app{max-width:1120px;margin:0 auto;padding-block:20px 0;padding-inline:16px}.mast{flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:12px;margin-bottom:18px;display:flex}.logo{font-family:var(--f-display);letter-spacing:-.015em;color:var(--ink);margin:0;font-size:clamp(34px,8vw,52px);font-weight:800;line-height:.95;position:relative}.logo span{z-index:1;mix-blend-mode:normal;position:relative}.logo:before{content:attr(data-t);pointer-events:none;color:var(--accent);z-index:0;position:absolute;inset:0;transform:translate(3px,3px)}.tag{color:var(--muted);max-width:40ch;margin:6px 0 0}.grid{gap:20px;display:grid}@media (width>=900px){.grid{grid-template-columns:300px minmax(0,1fr);align-items:start}.rail{top:calc(env(safe-area-inset-top,0px) + 16px);position:sticky}}.rail{background:var(--card);border:1px solid var(--line);border-radius:14px;gap:16px;padding:16px;display:grid}.field{gap:7px;display:grid}.lab{letter-spacing:.12em;text-transform:uppercase;color:var(--muted);font-size:11px;font-weight:600}.cap{font:12px/1.45 var(--f-mono);color:var(--muted);font-variant-numeric:tabular-nums}.seg{background:var(--tile);border-radius:10px;gap:2px;padding:3px;display:flex}.seg button{cursor:pointer;background:0 0;border:0;border-radius:8px;flex:1;min-width:0;min-height:40px;padding:9px 4px;font-size:14px;font-weight:600}.seg button[aria-checked=true]{background:var(--ink);color:var(--paper)}.seg.sub button{min-height:34px;padding:6px 4px;font-size:13px}.switch{cursor:pointer;justify-content:space-between;align-items:center;gap:10px;font-weight:500;display:flex}.switch input{appearance:none;background:var(--line);cursor:pointer;border-radius:12px;flex:none;width:42px;height:24px;transition:background .15s;position:relative}.switch input:after{content:"";background:var(--card);border-radius:50%;width:18px;height:18px;transition:transform .15s;position:absolute;top:3px;left:3px}.switch input:checked{background:var(--blue)}.switch input:checked:after{transform:translate(18px)}.inp{border:1.5px solid var(--line);background:var(--paper);width:100%;min-height:44px;color:var(--ink);font:16px/1.35 var(--f-body);border-radius:10px;padding:9px 11px}textarea.inp{resize:vertical;min-height:64px}.inp::placeholder{color:var(--muted);opacity:.8}.flab{justify-content:space-between;gap:8px;font-size:13px;font-weight:600;display:flex}.flab small{font:11px var(--f-mono);color:var(--muted);font-weight:400}.fields{gap:5px;display:grid}.fields .flab:not(:first-child){margin-top:7px}.toggles{gap:12px;display:grid}.fold summary{cursor:pointer;justify-content:space-between;align-items:center;min-height:28px;list-style:none;display:flex}.fold summary::-webkit-details-marker{display:none}.fold summary:after{content:"+";font:600 18px var(--f-mono);color:var(--ink)}.fold[open] summary:after{content:"–"}.fold[open] summary{margin-bottom:7px}.linkbtn{color:var(--muted);text-underline-offset:3px;cursor:pointer;background:0 0;border:0;justify-self:start;padding:0;font-size:14px;text-decoration:underline}.pagehead{flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:10px;margin-bottom:6px;display:flex}.pagehead h2{margin:0;font-size:18px}.hint{color:var(--muted);margin:0 0 14px;font-size:13px}.banner{border:1.5px dashed var(--pink);border-radius:12px;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;margin-bottom:14px;padding:10px 12px;font-size:14px;display:flex}.banner b{color:var(--pink-ink)}.btn{border:1.5px solid var(--ink);cursor:pointer;background:0 0;border-radius:999px;justify-content:center;align-items:center;gap:7px;min-height:40px;padding:8px 14px;font-weight:600;display:inline-flex}.btn.solid{background:var(--ink);color:var(--paper)}.btn.pink{background:var(--pink);border-color:var(--pink);color:var(--on-pink)}.btn:disabled{opacity:.45;cursor:default}.btn svg{flex:none;width:18px;height:18px}#pages{grid-template-columns:repeat(auto-fill,minmax(min(100%,300px),1fr));gap:22px 28px;display:grid}#pages.bw-gray canvas,.bw-gray canvas.fx{filter:grayscale()contrast(1.06)}#pages.bw-copy canvas,.bw-copy canvas.fx{filter:grayscale()contrast(1.8)}.row{grid-template-columns:1fr 1fr;display:grid;position:relative}.rowcap{font:12px var(--f-mono);color:var(--muted);text-align:center;grid-column:1/-1;margin-top:7px}.pg{aspect-ratio:var(--pa);box-shadow:0 1px 0 var(--line),0 2px 10px #14121e1a;background:#fff;min-width:0;position:relative;overflow:hidden}.pg.wide{aspect-ratio:calc(var(--pa)*2);grid-column:1/-1}.row[data-kind=spread] 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#00000040;height:50%;bottom:0}.zone.empty{background:repeating-linear-gradient(135deg,#d4541e0d 0 10px,#0000 10px 20px)}.zone.empty span{color:#9a3a12;background:#ffffffe6;border:1.5px dashed #d4541e;border-radius:999px;align-items:center;gap:5px;padding:5px 11px;font-size:13px;font-weight:600;display:inline-flex}.zone.drop{outline:3px solid var(--pink);outline-offset:-3px;background:#d4541e1f}.pnum{font:600 10px var(--f-mono);color:#555;pointer-events:none;background:#ffffffd9;border-radius:4px;padding:1px 5px;position:absolute;top:6px;left:7px}.pnum.r{left:auto;right:7px}.low{font:600 10px var(--f-mono);color:#7a4a00;pointer-events:none;background:#ffe3b0;border-radius:4px;padding:2px 6px;position:absolute;bottom:6px;left:7px}.tbtns{gap:5px;display:flex;position:absolute;bottom:6px;right:6px}.splitbtn{color:#fff;font:600 11px var(--f-mono);cursor:pointer;background:#1c1b20d1;border:0;border-radius:7px;align-items:center;gap:4px;min-height:28px;padding:5px 7px;display:flex}.splitbtn svg{width:13px;height:13px}.splitbtn.bleed{background:var(--pink);color:#1c1b20}.edseg{gap:6px;display:grid}.edgroup{gap:8px;display:grid}.txtbtn{font-family:var(--f-body);padding:5px 8px;font-weight:700}@container (width<=240px){.splitbtn .lbl{display:none}.tbtns{gap:4px}}.join{border:2px solid var(--card);background:var(--ink);width:36px;height:36px;color:var(--paper);cursor:pointer;z-index:2;border-radius:50%;place-items:center;padding:0;display:grid;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);box-shadow:0 2px 8px #0003}.join[aria-pressed=true]{background:var(--pink);color:var(--on-pink)}.join svg{width:18px;height:18px}.bar{z-index:20;background:color-mix(in srgb,var(--paper) 88%,transparent);-webkit-backdrop-filter:blur(10px);border-top:1px solid var(--line);padding:10px 16px calc(10px + env(safe-area-inset-bottom,0px));position:fixed;bottom:0;left:0;right:0}.bar-in{grid-template-columns:1fr 1fr 1.25fr;gap:8px;max-width:1120px;margin:0 auto;display:grid}.bar .btn{white-space:nowrap;min-width:0;min-height:48px;padding:8px;font-size:15px;overflow:hidden}@media (width<=440px){.bar .btn{gap:5px;font-size:14px}.bar .btn svg{width:16px;height:16px}}@media (width<=400px){.bar .btn svg{display:none}}.scrim{z-index:40;background:#0a081080;justify-content:center;align-items:flex-end;display:flex;position:fixed;inset:0}.sheet{background:var(--card);width:100%;max-width:640px;padding:16px 16px calc(16px + env(safe-area-inset-bottom,0px));border-radius:18px 18px 0 0;gap:14px;max-height:92%;display:grid;overflow:auto}@media (width>=700px){.scrim{align-items:center}.sheet{border-radius:18px;max-height:88%}}.sh-head{justify-content:space-between;align-items:center;gap:10px;display:flex}.sh-head h3{margin:0;font-size:17px}.stage{background:var(--tile);touch-action:none;border-radius:12px;place-items:center;padding:6px;display:grid}.stage canvas{touch-action:none;cursor:grab;max-width:100%}.stage canvas:active{cursor:grabbing}.tools{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.tools .btn{padding:8px 12px}.zoom{flex:1;align-items:center;gap:10px;min-width:180px;display:flex}.zoom input{accent-color:var(--pink);flex:1}.zoom output{font:12px var(--f-mono);text-align:right;width:44px;color:var(--muted)}.gest{color:var(--muted);text-align:center;margin:0;font-size:12.5px}.row2{flex-wrap:wrap;gap:8px;display:flex}.row2 .btn{flex:1}.danger{color:#c0392b;border-color:#c0392b}.sum{grid-template-columns:auto 1fr;gap:4px 14px;margin:0;font-size:14px;display:grid}.sum dt{color:var(--muted)}.sum dd{font-family:var(--f-mono);font-variant-numeric:tabular-nums;margin:0;font-size:13px}.sheetprev{gap:10px;display:grid}.sheetprev figure{gap:5px;margin:0;display:grid}.sheetprev figcaption{font:12px var(--f-mono);color:var(--muted)}.sheetprev canvas{background:#fff;width:100%;height:auto;display:block;box-shadow:0 1px 6px #00000026}.steps{gap:6px;margin:0;padding-left:20px;font-size:14px;display:grid}.note{color:var(--muted);margin:0;font-size:13px}.warnline{color:var(--warn);margin:0;font-size:13px}.prog{font:13px var(--f-mono);color:var(--muted);min-height:1.4em;margin:0}#flip{z-index:30;background:var(--paper);color:var(--ink);flex-direction:column;display:flex;position:fixed;inset:0}.flip-top{padding:calc(10px + env(safe-area-inset-top,0px)) 16px 6px;justify-content:space-between;align-items:center;gap:10px;display:flex}.flip-top h3{font:700 13px var(--f-body);letter-spacing:.12em;color:var(--ink-2);margin:0}#fbroot{flex-direction:column;flex:1;min-height:0;display:flex}#fbroot>.fb{flex:1;height:auto;min-height:0}.qr{gap:10px;display:grid}.qr input:not([type=checkbox]){border:1.5px solid var(--line);background:var(--paper);width:100%;min-height:44px;color:var(--ink);font:14px var(--f-body);border-radius:10px;padding:8px 12px}.qrout{flex-wrap:wrap;align-items:center;gap:14px;display:flex}.qrout canvas{width:150px;height:150px;image-rendering:pixelated;background:#fff;border-radius:6px}.toast{left:50%;bottom:calc(84px + env(safe-area-inset-bottom,0px));background:var(--ink);color:var(--paper);z-index:60;text-align:center;border-radius:999px;max-width:calc(100% - 32px);padding:10px 16px;font-size:14px;position:fixed;transform:translate(-50%);box-shadow:0 6px 20px #00000040}@media (prefers-reduced-motion:reduce){*{transition:none!important}}.back{margin-bottom:14px}.back a{color:var(--ink-2);font-size:13px;text-decoration:none}.back a:hover{color:var(--accent)}.bar-spacer{height:96px}.pubbox{border:1.5px solid var(--line);border-radius:14px;padding:14px}.publink{color:var(--accent);font:13px var(--f-mono);word-break:break-all}.publist{gap:8px;margin:0;padding:0;list-style:none;display:grid}.publist li{justify-content:space-between;align-items:baseline;gap:10px;font-size:14px;display:flex}.publist a{color:var(--ink)}.switch a{color:var(--accent)}#sh-ts{min-height:65px}.eprow{grid-template-columns:96px minmax(0,1fr);gap:10px;margin-top:7px;display:grid}select.inp{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--ink-2) 50%),linear-gradient(135deg,var(--ink-2) 50%,transparent 50%);background-position:calc(100% - 18px),calc(100% - 13px);background-repeat:no-repeat;background-size:5px 5px;padding-right:32px}.libl{color:var(--accent);font-weight:600;text-decoration:none}.libl:hover{text-decoration:underline}#sh-lib{gap:6px;display:grid}.seg[data-key=paper] button{flex:auto;padding-inline:8px}