.rp-tool-page{min-height:100svh}.rp-rail{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;display:grid}.rp-step{--step-color:var(--bdb-teal-deep);background:color-mix(in srgb,var(--step-color) 14%,var(--bdb-card));min-height:clamp(84px,10vh,112px);color:var(--bdb-ink);letter-spacing:-.025em;border-radius:3px;align-items:center;gap:clamp(12px,1.5vw,24px);padding:12px clamp(12px,1.6vw,28px);font-size:clamp(1.2rem,2.1vw,2rem);font-weight:850;line-height:1.15;display:flex}.rp-step:nth-child(2){--step-color:var(--bdb-amber)}.rp-step:nth-child(3){--step-color:var(--bdb-green-deep)}.rp-letter{aspect-ratio:1;background:var(--step-color);color:#fff;border-radius:50%;flex:none;place-items:center;width:clamp(44px,4.4vw,72px);font-size:clamp(1.5rem,2.6vw,2.8rem);font-weight:900;display:grid}.rp-step.active{background:var(--step-color);color:#fff}.rp-step.active .rp-letter{color:var(--step-color);background:#fff}.rp-step.done{background:color-mix(in srgb,var(--step-color) 22%,var(--bdb-card))}.rp-button{border:4px solid var(--bdb-teal-deep);background:var(--bdb-teal-deep);color:#fff;cursor:pointer;border-radius:18px;min-width:clamp(170px,19vw,300px);min-height:clamp(68px,8vh,88px);padding:12px 24px;font-size:clamp(1.3rem,2.2vw,2rem);font-weight:850;line-height:1.1}.rp-button.secondary{color:var(--bdb-teal-deep);background:0 0}.rp-button:hover:not(:disabled){background:var(--bdb-teal-deep);color:#fff;box-shadow:0 0 0 4px color-mix(in srgb,var(--bdb-teal) 18%,transparent)}.rp-button:disabled{opacity:.6;cursor:default}.rp-eyebrow{letter-spacing:.06em;text-transform:uppercase;color:var(--bdb-ink-soft);margin:0;font-size:clamp(.95rem,1.2vw,1.3rem);font-weight:850}.pb-root{min-height:calc(100svh - var(--division-nav-height,0px));flex-direction:column;gap:16px;max-width:1880px;margin:auto;padding:16px;display:flex}.pb-main{flex:1;grid-template-columns:minmax(0,1.15fr) minmax(280px,1fr);align-items:center;gap:clamp(24px,4vw,64px);display:grid}.pb-model{justify-items:center;min-width:0;padding:clamp(12px,2vh,32px) 0;display:grid}.pb-prop{grid-template-rows:auto auto auto;grid-template-columns:minmax(0,1fr) minmax(110px,.9fr) minmax(0,1fr);align-items:center;gap:18px clamp(12px,2vw,36px);width:min(100%,760px);display:grid}.pb-cell{text-align:center;min-width:0;font-size:clamp(4rem,8.5vw,10rem);font-weight:900;line-height:1.1}.pb-num{color:var(--bdb-coral-deep)}.pb-den{color:var(--bdb-teal-deep)}.pb-bar-l,.pb-bar-r{border-top:6px solid var(--bdb-ink);height:0}.pb-eq{text-align:center;color:var(--bdb-ink);font-size:clamp(2.6rem,4vw,4.2rem);font-weight:850;line-height:1}.pb-scale{border:3px solid var(--bdb-line);min-height:68px;color:var(--bdb-teal-deep);background:var(--bdb-ground-2);white-space:nowrap;border-radius:12px;justify-content:center;align-items:center;gap:3px;padding:8px;font-size:clamp(1.6rem,2.5vw,3rem);font-weight:900;display:flex}.pb-scale.done{color:var(--bdb-green-deep);background:color-mix(in srgb,var(--bdb-green) 14%,var(--bdb-card));border-color:var(--bdb-green-deep)}.pb-scale.live{border-color:var(--bdb-teal-deep);background:var(--bdb-card);box-shadow:0 0 0 5px color-mix(in srgb,var(--bdb-teal) 14%,transparent)}.pb-kin{width:clamp(58px,5.5vw,100px);min-height:52px;color:var(--bdb-ink);font-size:inherit;text-align:center;background:0 0;border:0;font-weight:900}.pb-blank{border:4px dashed var(--bdb-teal-deep);background:var(--bdb-card);border-radius:14px;place-items:center;min-height:clamp(84px,11vw,176px);display:grid}.pb-blank:has(input:disabled){border-color:var(--bdb-line);background:var(--bdb-ground-2)}.pb-blank input{text-align:center;width:100%;min-width:0;color:var(--bdb-ink);background:0 0;border:0;font-size:clamp(3rem,6.5vw,7.5rem);font-weight:900}.pb-blank input::placeholder{color:var(--bdb-ink-soft);opacity:.7}.pb-blank input:disabled{cursor:default}.pb-prompt{justify-items:start;gap:16px;min-width:0;padding:12px 0;display:grid}.pb-step-copy{letter-spacing:-.035em;font-size:clamp(1.7rem,3vw,3rem);font-weight:900;line-height:1.15}.pb-go{border:3px solid var(--bdb-teal-deep);background:var(--bdb-teal-deep);color:#fff;cursor:pointer;border-radius:12px;min-width:220px;min-height:64px;padding:14px 26px;font-size:clamp(1.2rem,1.8vw,1.8rem);font-weight:850}.pb-go:hover{background:var(--bdb-ink);border-color:var(--bdb-ink)}.pb-hintbtn,.pb-toggle,.pb-preset{border:2px solid var(--bdb-line);background:var(--bdb-card);min-height:46px;color:var(--bdb-ink);cursor:pointer;border-radius:10px;padding:10px 16px;font-size:clamp(1rem,1.2vw,1.3rem);font-weight:750}.pb-hintbtn:hover,.pb-toggle:hover,.pb-preset:hover,.pb-toggle.on{border-color:var(--bdb-teal-deep);background:color-mix(in srgb,var(--bdb-teal) 10%,var(--bdb-card))}.pb-hint{border-left:5px solid var(--bdb-amber);background:color-mix(in srgb,var(--bdb-amber) 12%,var(--bdb-card));color:var(--bdb-ink);padding:12px 16px;font-size:clamp(1.1rem,1.5vw,1.5rem);font-weight:700;line-height:1.4}.pb-solved{color:var(--bdb-green-deep);font-size:clamp(1.3rem,2vw,2rem);font-weight:850}.pb-groups-wrap{gap:12px;width:100%;display:grid}.pb-groups{flex-wrap:wrap;gap:10px;display:flex}.pb-group{border:2px solid var(--bdb-line);background:var(--bdb-card);border-radius:12px;gap:8px;padding:10px 12px;display:grid}.pb-group-lbl{color:var(--bdb-ink-soft);text-align:center;text-transform:uppercase;font-size:.8rem;font-weight:850}.pb-items{flex-wrap:wrap;justify-content:center;gap:4px;max-width:132px;display:flex}.pb-dot{border-radius:4px;width:18px;height:18px}.pb-dot.num{background:var(--bdb-coral-deep)}.pb-dot.den{background:var(--bdb-teal-deep)}.pb-groups-cap{color:var(--bdb-ink-soft);margin:0;font-size:clamp(1rem,1.3vw,1.3rem);line-height:1.4}.pb-foot{gap:14px;display:grid}.pb-presets{flex-wrap:wrap;justify-content:center;gap:8px;display:flex}.pb-actions,.rx-bar{grid-template-columns:1fr auto 1fr;align-items:center;gap:16px;display:grid}.pb-actions .rp-button:last-child,.rx-bar .rp-button:last-child{justify-self:end}.pb-actions .rp-button:first-child,.rx-bar .rp-button:first-child{justify-self:start}.pb-actions p{color:var(--bdb-ink-soft);text-align:center;margin:0;font-size:clamp(.95rem,1.2vw,1.25rem);font-weight:750}.rx-wrap{min-height:calc(100svh - var(--division-nav-height,0px));flex-direction:column;gap:16px;max-width:1880px;margin:auto;padding:16px;display:flex}.rx-wrap .rp-rail{grid-template-columns:repeat(3,minmax(0,1fr))}.rx-workspace{flex:1;place-items:center;min-height:0;display:grid}.rx-frame{width:min(100%,calc((100svh - var(--division-nav-height,0px) - 64px - clamp(84px,10vh,112px) - clamp(68px,8vh,88px)) * 1920 / 840));aspect-ratio:1920/840;background:var(--bdb-ground);min-width:min(100%,640px);position:relative;overflow:hidden}.rx-chip{justify-content:center;align-items:center;gap:12px;line-height:1;display:flex}.rx-paused .rx-anim{animation-play-state:paused}.rx-hint{color:var(--bdb-ink-soft);text-align:center;max-width:360px;font-size:clamp(1rem,1.2vw,1.3rem);font-weight:700}@media (max-width:760px){.pb-root,.rx-wrap{gap:12px;padding:12px}.rp-step{gap:8px;padding:10px;font-size:1.1rem}.rp-letter{width:40px;font-size:1.4rem}.pb-main{grid-template-columns:1fr;gap:16px}.pb-prop{max-width:580px}.pb-prompt{justify-items:stretch}.pb-go{width:100%;min-width:0}.pb-actions,.rx-bar{grid-template-columns:1fr 1fr;gap:12px}.pb-actions p,.rx-hint{grid-area:1/1/auto/-1;max-width:none}.rp-button{width:100%;min-width:0;min-height:60px;padding:12px;font-size:1.3rem}.rx-wrap .rp-step{text-align:center;flex-direction:column;justify-content:center;font-size:1rem}.rx-wrap{min-height:0}.rx-frame{width:100%}}@media (prefers-reduced-motion:reduce){.rp-button{transition:none}}.pb-kin,.pb-blank input{appearance:textfield}.pb-kin::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}.pb-kin::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}.pb-blank input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}.pb-blank input::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}.pb-scale.live:focus-within{box-shadow:0 0 0 5px color-mix(in srgb,var(--bdb-teal) 30%,transparent)}