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.dragarea{touch-action:none}.round #numberLine text{font-family:var(--body)}.round #numberLine .number-label{font-size:25px;font-weight:700}.round #numberLine .tick-label{fill:#d9c2eb;font-size:22px}.round .linebox{fill:none;stroke:#8f62aa;stroke-dasharray:6 4;stroke-width:2px}.round .linebox.live{stroke:var(--gold)}.round .linebox-text{font-size:22px;font-weight:700}.round .dot.dock{opacity:.85;cursor:grab}.round .spot{animation:1s infinite round-ring}.round .rounding-arrow{filter:drop-shadow(0 0 6px #67deff);animation:2.8s ease-in-out 3 round-glow}.round .rounding-beam{stroke-dasharray:1;animation:2.8s ease-in-out 3 round-draw}.round .linebox.pickable{cursor:pointer;stroke:#b98cd6;pointer-events:all}.round .linebox.pickable:hover{stroke:var(--gold)}.round .tick.major{opacity:.9}.round .number-line-section.wrong{animation:.4s round-shake}.round .number-line-section.wrong .linebox.live{stroke:var(--red)}.round .estimate{font:600 clamp(29px,4vw,49px)var(--display);font-variant-numeric:tabular-nums;border-top:1px solid #543066;justify-content:center;align-items:center;gap:20px;padding-top:15px;display:flex}.round .estimate-wrap{margin-top:22px}.round .approx{color:#b99dce}.round .estimate button{font:inherit;color:#fff;letter-spacing:2px;border:2px dashed #8f62aa;min-width:165px;min-height:76px}.round .estimate button.target{border-color:var(--gold);background:#292108;box-shadow:0 0 15px #ffe96f33}.round .estimate button.correct{color:#c6ffbb;background:#102510;border-style:solid;border-color:#85ff73;box-shadow:0 0 14px #85ff7344}.round .estimate button:disabled{opacity:1}.round .estimate-wrap.wrong .estimate button{border-color:var(--red);background:#2b0a10;animation:.4s round-shake;box-shadow:0 0 15px #ff627955}.round .rule-guide{background:#09040e;border:1px solid #523363;border-radius:10px;margin:12px 0;padding:8px 10px 6px}.round .rounding-hill{width:auto;max-width:100%;height:130px;margin:0 auto 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.tstep{color:#a79ab8;background:#0d0815d9;border:1px solid #463056;border-radius:10px;grid-template-columns:32px minmax(0,1fr) auto;align-items:center;gap:10px;margin-bottom:6px;padding:7px 9px;font-size:14px;font-weight:600;transition:all .2s;display:grid}.round .tstep .tb{width:32px;height:32px;font:600 14px var(--display);border:1px solid #694a7f;border-radius:8px;place-items:center;display:grid}.round .tstep .tn{font-size:13px;line-height:1.15}.round .tickc{width:20px;height:20px;color:var(--green);border:2px dashed #694a7f;border-radius:50%;place-items:center;font-size:12px;font-weight:700;display:grid}.round .tickc.did{border:2px solid var(--green);background:#0b1a0d;animation:.35s round-pop}.round .tstep.on{border-color:var(--purple);color:#fff;background:#240930;box-shadow:inset 0 0 18px #b824ff17,0 0 12px #b824ff24}.round .tstep.on .tb{color:#fff;border-color:#d059ff;box-shadow:0 0 9px #b824ff55}.round .tstep.done{color:var(--green);background:#0b1a0d;border-color:#40733d}.round .tstep.done .tb{border-color:#4c9942}.round .feedback{min-height:48px}.round .feedback.bad{color:var(--red)}@keyframes round-ring{0%,to{opacity:1;stroke-width:2px}50%{opacity:.35;stroke-width:6px}}@keyframes round-glow{0%,to{opacity:.12;filter:drop-shadow(0 0 2px #b342ff)}30%,65%{opacity:1;filter:drop-shadow(0 0 9px #67deff)}}@keyframes round-draw{0%{stroke-dashoffset:1px}38%,to{stroke-dashoffset:0}}@keyframes round-shake{20%{transform:translate(-4px)}40%{transform:translate(4px)}60%{transform:translate(-3px)}80%{transform:translate(2px)}}@keyframes round-pop{0%{transform:scale(.6)}60%{transform:scale(1.25)}to{transform:scale(1)}}@media (max-width:1000px){.round{padding:24px 18px}.round .workspace{grid-template-columns:minmax(0,1fr) 285px;gap:16px}}@media (max-width:720px){.round{padding:23px 12px}.round .workspace{grid-template-columns:1fr}.round .number-digits{gap:12px;max-width:350px}.round .digit-group 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