.site .ws-stage{background:var(--paper)}.site .ws-controls{flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:20px 40px;max-width:1100px;margin:0 auto 32px;display:flex}.site .ws-actions{flex-wrap:wrap;align-items:center;gap:12px 16px;max-width:420px;display:flex}.site .ws-new{background:var(--soft)}.site .ws-new:hover{background:var(--grid)}.site .ws-toggle{font-size:var(--step-small);cursor:pointer;align-items:flex-start;gap:8px;display:flex}.site .ws-toggle input{accent-color:var(--ink);margin-top:4px}.site .ws-set-note{font-size:var(--step-small);color:var(--muted)}.site .ws-set{display:none}.site .ws-sheets{justify-items:center;gap:40px;display:grid}.site .ws-paper{--row:54px;background-color:var(--paper);background-image:var(--squares);width:min(100%,820px);min-height:min(116vw,1060px);box-shadow:0 1px 0 var(--grid), 0 18px 40px #1d377224;color:var(--ink);border-radius:6px;flex-direction:column;gap:22px;padding:clamp(24px,4vw,48px) clamp(18px,4vw,52px) 28px clamp(36px,7vw,92px);display:flex;position:relative}.site .ws-paper:before{content:"";background:var(--margin);width:2px;position:absolute;top:0;bottom:0;left:clamp(22px,4.6vw,62px)}.site .ws-answers{background-color:#fffdf3}.site .ws-head{gap:14px;display:grid}.site .ws-version{border:2px solid var(--ink);border-radius:999px;justify-self:start;padding:2px 12px;font-size:.8125rem;font-weight:800}.site .ws-head h2{letter-spacing:-.02em;font-size:clamp(1.5rem,1.1rem + 1.6vw,2.25rem);line-height:1.05}.site .ws-name{font-weight:700;font-size:var(--step-small);flex-wrap:wrap;align-items:baseline;gap:8px 10px;display:flex}.site .ws-fill{border-bottom:2px solid var(--ink);flex:140px;min-width:120px;height:1.4em}.site .ws-fill-short{flex:0 120px}.site .ws-fill-tiny{vertical-align:bottom;flex:none;width:44px;min-width:0;display:inline-block}.site .ws-score{white-space:nowrap;margin-left:auto}.site .ws-lines{columns:2;column-gap:40px;margin:0;padding-left:2.4em;list-style:decimal}.site .ws-lines li{break-inside:avoid;min-height:var(--row);font-family:var(--hand);font-size:clamp(1.25rem,1rem + .9vw,1.6rem);font-weight:600;line-height:var(--row);padding-left:6px;display:list-item}.site .ws-lines li::marker{font-family:var(--face);color:var(--muted);font-size:.7em;font-weight:700}.site .ws-n40{--row:42px}.site .ws-line{white-space:nowrap;align-items:baseline;gap:.35em;display:inline-flex}.site .ws-blank{border-bottom:2px solid var(--ink);text-align:center;color:#1b9461;min-width:2.6em;line-height:1.1;display:inline-block}.site .ws-models{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:8px 18px;margin:0;padding-left:2.4em;list-style:decimal;display:grid}.site .ws-models li::marker{color:var(--muted);font-size:.8em;font-weight:700}.site .ws-bond{width:100%;max-width:160px;height:auto;display:block}.site .ws-bond line{stroke:var(--ink);stroke-width:2.4px}.site .ws-bond circle{fill:#fff;stroke:var(--ink);stroke-width:2.4px}.site .ws-bond .is-gap circle{stroke-dasharray:6 5}.site .ws-bond text{font-family:var(--hand);fill:var(--ink);font-size:24px;font-weight:700}.site .ws-bond .is-gap text{fill:#1b9461}.site .ws-columns{--cell:38px;grid-template-columns:repeat(auto-fill, minmax(calc(var(--cell) * (var(--squares-across) + 1) + 2.6em), 1fr));gap:28px 20px;margin:0;padding-left:2.4em;list-style:decimal;display:grid}.site .ws-columns li::marker{color:var(--muted);font-size:.8em;font-weight:700}.site .ws-sum{grid-auto-rows:var(--cell);vertical-align:top;font-family:var(--hand);font-size:1.6rem;font-weight:600;display:inline-grid}.site .ws-cell{border:1px solid var(--grid);background:#fff9;place-items:center;margin:0 -1px -1px 0;display:grid}.site .ws-op{font-family:var(--face);font-weight:800}.site .ws-rule{border-top:2.5px solid var(--ink);border-bottom:2.5px solid var(--ink)}.site .ws-answer{color:#1b9461}.site .ws-foot{color:var(--muted);text-align:right;margin-top:auto;padding-top:12px;font-size:.8125rem}.site .ws-paper{--read:"Andika", ui-sans-serif, system-ui, sans-serif;font-variant-ligatures:none;--mark:#dc3f45;--right:#1b9461}.site .rd-do{font-weight:700;font-size:var(--step-small);margin:0}.site .rd-word{font-family:var(--read);font-size:clamp(1.6rem,1.1rem + 1.6vw,2.4rem);font-weight:700;line-height:1.1}.site .rd-pic{text-align:center;flex:none;width:1.3em;font-size:clamp(2.2rem,1.6rem + 2vw,3.2rem);line-height:1.2}.site :is(.rd-missing,.rd-segment){grid-template-columns:repeat(2,1fr);gap:14px 28px;margin:0;padding-left:2.4em;list-style:decimal;display:grid}.site :is(.rd-missing,.rd-segment) li::marker{color:var(--muted);font-size:.8em;font-weight:700}.site :is(.rd-missing,.rd-segment) li{min-height:96px;padding-left:6px}.site :is(.rd-missing,.rd-segment) li>*{vertical-align:middle}.site :is(.rd-missing,.rd-segment) .rd-pic{margin-right:14px;display:inline-block}.site .rd-match{--match-row:clamp(64px, 9vw, 84px);grid-template-columns:auto minmax(80px,1fr) auto;max-width:640px;padding-left:2.4em;display:grid}.site .rd-match ul{grid-auto-rows:var(--match-row);margin:0;padding:0;list-style:none;display:grid}.site .rd-match li{align-items:center;gap:16px;display:flex}.site .rd-match-words li{justify-content:flex-end}.site .rd-dot{background:var(--ink);border-radius:50%;flex:none;width:12px;height:12px}.site .rd-match-lines{width:100%;height:calc(var(--rows) * var(--match-row))}.site .rd-match-lines line{stroke:var(--right);stroke-width:3px;stroke-linecap:round;vector-effect:non-scaling-stroke}.site .rd-missing-word{gap:8px;display:inline-grid}.site .rd-gap{border-bottom:3px solid var(--ink);text-align:center;color:var(--right);margin:0 .12em;display:inline-block}.site .rd-choices{font-family:var(--read);gap:.5em;font-size:clamp(1.15rem,1rem + .5vw,1.45rem);display:flex}.site .rd-choices span{border:2px solid #0000;border-radius:999px;padding:0 .4em}.site .rd-choices .is-right{border-color:var(--right);color:var(--right)}.site .rd-buttons-word{grid-template-rows:auto 30px auto;column-gap:3px;display:inline-grid}.site .rd-letter{font-family:var(--read);text-align:center;grid-row:1;padding:0 2px;font-size:clamp(2rem,1.5rem + 1.8vw,2.9rem);font-weight:700;line-height:1}.site .rd-mark{background:var(--mark);place-self:center;display:block}.site .rd-mark-dot{border-radius:50%;width:12px;height:12px}.site .rd-mark-line{border-radius:3px;width:calc(100% - 8px);height:5px}.site .rd-mark-curve{border:4px solid var(--mark);background:0 0;border-top:0;border-radius:0 0 30px 30px;width:calc(100% - 22px);height:12px}.site .rd-boxes-word{gap:6px;display:inline-grid}.site .rd-hint{font-family:var(--read);color:var(--muted);font-size:1.25rem}.site .rd-boxes{display:flex}.site .rd-box{aspect-ratio:1;border:2.5px solid var(--ink);width:clamp(44px,7vw,58px);font-family:var(--read);color:var(--right);background:#fff;place-items:center;margin-right:-2.5px;font-size:1.6rem;font-weight:700;display:grid}.site .rd-trace{--hw-height:clamp(48px, 7vw, 66px);border-collapse:collapse;table-layout:fixed;width:100%}.site .rd-trace.rd-n6{--hw-height:clamp(56px, 9vw, 86px)}.site .rd-trace.rd-n8{--hw-height:clamp(52px, 8vw, 74px)}.site .rd-trace th{font-size:var(--step-small);color:var(--muted);text-align:left;padding:0 12px 4px 0;font-weight:800}.site .rd-trace th:first-child{width:28%}.site .rd-trace th:nth-child(2){width:38%}.site .rd-trace td{vertical-align:middle;padding:6px 14px 6px 0}.site .hw{height:var(--hw-height);width:auto;max-width:100%;display:block;overflow:visible}.site .hw-lines{width:100%}.site .hw-rules line{stroke:#9fb3d1;stroke-width:1px;vector-effect:non-scaling-stroke}.site .hw-rules .hw-mid{stroke-dasharray:6 5}.site .hw-rules .hw-base{stroke:var(--ink);stroke-width:1.5px}.site .hw-rules .hw-tail{stroke-dasharray:2 4}.site .hw :is(path,.hw-text){fill:none;stroke-linecap:round;stroke-linejoin:round}.site .hw-solid path{stroke:var(--ink);stroke-width:6px}.site .hw-solid circle,.site .hw-solid .hw-text{fill:var(--ink)}.site .hw-dotted path{stroke:#6f7d99;stroke-width:5px;stroke-dasharray:0 9}.site .hw-dotted circle{fill:#6f7d99}.site .hw-text{font-family:var(--read);font-size:80px}.site .hw-dotted .hw-text{stroke:#6f7d99;stroke-width:2px;stroke-dasharray:1 5}.site .rd-search{flex-wrap:wrap;align-items:flex-start;gap:28px 40px;display:flex}.site .rd-grid{--cell:min(48px, 8vw);grid-template-columns:repeat(var(--size), var(--cell));grid-auto-rows:var(--cell);border:2px solid var(--ink);background:#fff;border-radius:6px;display:grid;position:relative}.site .rd-grid span{font-family:var(--read);font-size:calc(var(--cell) * .56);place-items:center;font-weight:700;display:grid;position:relative}.site .rd-grid svg{width:100%;height:100%;position:absolute;inset:0}.site .rd-grid rect{fill:#1b946124;stroke:var(--right);stroke-width:.06px}.site .rd-find{font-family:var(--read);gap:10px;margin:0;padding:0;font-size:1.5rem;font-weight:700;list-style:none;display:grid}.site .rd-tick{border:2px solid var(--ink);width:1.1em;height:1.1em;color:var(--right);vertical-align:-.1em;border-radius:4px;place-items:center;margin-right:12px;font-size:.8em;display:inline-grid}.site .ws-hub-more{margin-top:28px}.site .ws-tips{grid-template-columns:repeat(auto-fit,minmax(min(100%,240px),1fr));gap:28px 36px;margin-top:40px;display:grid}.site .ws-tips h3{font-size:var(--step-lead);letter-spacing:-.02em}.site .ws-tips p{color:var(--muted);margin-top:10px}@media (width<=640px){.site .ws-lines{columns:1}.site :is(.rd-missing,.rd-segment){grid-template-columns:1fr}.site .ws-columns{--cell:32px}}@media print{@page{margin:12mm}html:has(.ws-stage){background:#fff!important}html:has(.ws-stage) body{background:#fff!important}.site:has(.ws-stage){color:#000;background:#fff;font-size:12pt}.site .ws-controls{display:none!important}.site:has(.ws-stage)>:not(main){display:none!important}.site:has(.ws-stage) main>:not(.ws-stage){display:none!important}.site .ws-has-set .ws-sheets{display:none}.site .ws-has-set .ws-set{display:block}.site .ws-set .ws-paper+.ws-paper{break-before:page}.site .ws-stage{background:#fff;padding:0}.site .ws-sheets{display:block}.site .ws-paper{--row:12.5mm;width:100%;min-height:0;box-shadow:none;color:#000;break-inside:auto;background:#fff;border-radius:0;gap:6mm;padding:0}.site .ws-paper:before{display:none}.site .ws-answers{break-before:page;background:#fff}.site .ws-n40{--row:9.5mm}.site .ws-head h2{font-size:18pt}.site .ws-name{font-size:11pt}.site .ws-lines li{font-size:17pt}.site .ws-n40 li{font-size:15pt}.site :is(.ws-lines,.ws-models,.ws-columns) li::marker{color:#555}.site :is(.ws-blank,.ws-answer,.ws-bond .is-gap text){color:#000;fill:#000}.site .ws-blank,.site .ws-fill{border-bottom-color:#000}.site .ws-models{grid-template-columns:repeat(4,1fr);gap:2mm 6mm}.site .ws-bond{max-width:38mm}.site .ws-columns{--cell:9mm;grid-template-columns:repeat(4,1fr);gap:8mm 4mm}.site .ws-sum{font-size:17pt}.site .ws-cell{background:0 0;border-color:#bbb}.site .ws-rule{border-top-color:#000;border-bottom-color:#000}.site .ws-foot{color:#555;font-size:9pt}.site .ws-version{font-size:9pt}.site .rd-do{font-size:11pt}.site .rd-word{font-size:24pt}.site .rd-pic{font-size:28pt}.site .rd-match{--match-row:21mm;max-width:150mm}.site .rd-dot{background:#000;width:3mm;height:3mm}.site :is(.rd-missing,.rd-segment){gap:3mm 8mm}.site :is(.rd-missing,.rd-segment) li{break-inside:avoid;min-height:25mm}.site .rd-choices{font-size:16pt}.site .rd-letter{font-size:28pt}.site .rd-buttons-word{grid-template-rows:auto 9mm auto}.site .rd-box{border-color:#000;width:13mm;font-size:18pt}.site .rd-hint{color:#333;font-size:14pt}.site .rd-trace{--hw-height:15mm}.site .rd-trace.rd-n8{--hw-height:19mm}.site .rd-trace.rd-n6{--hw-height:23mm}.site .rd-trace th{color:#333;font-size:10pt}.site .rd-trace tr{break-inside:avoid}.site .hw-rules line{stroke:#888}.site .hw-rules .hw-base,.site .hw-solid path{stroke:#000}.site .hw-solid circle{fill:#000}.site .hw-dotted path{stroke:#555}.site .hw-dotted circle{fill:#555}.site .rd-grid{--cell:11.5mm;border-color:#000}.site .rd-grid span{font-size:19pt}.site .rd-find{font-size:18pt}.site .rd-tick{border-color:#000}.site :is(.rd-gap,.rd-box,.rd-tick,.rd-choices .is-right){color:#000}.site .rd-gap{border-bottom-color:#000}.site .rd-choices .is-right{border-color:#000}.site .rd-match-lines line{stroke:#000}.site .rd-grid rect{fill:none;stroke:#000}.site .rd-mark{-webkit-print-color-adjust:exact;print-color-adjust:exact}}