#problem-tools-root .twd-scene{isolation:isolate;background:radial-gradient(circle at var(--twd-pointer-x) var(--twd-pointer-y), color-mix(in srgb, var(--twd-accent) 11%, transparent), transparent 32%), var(--twd-background);color:var(--twd-secondary);font-family:var(--twd-font);position:absolute;inset:0;overflow:hidden;container-type:size}#problem-tools-root .twd-scene,#problem-tools-root .twd-scene *{box-sizing:border-box}#problem-tools-root .twd-scene button,#problem-tools-root .twd-scene strong,#problem-tools-root .twd-scene b,#problem-tools-root .twd-scene i,#problem-tools-root .twd-scene em{font:inherit}#problem-tools-root .twd-membrane,#problem-tools-root .twd-relay,#problem-tools-root .twd-disclosure,#problem-tools-root .twd-downpour{grid-template-rows:auto minmax(0,1fr) auto;gap:clamp(12px,2.6cqh,24px);padding:clamp(18px,4.2cqh,38px) clamp(18px,4.2cqw,46px);display:grid;position:absolute;inset:0}#problem-tools-root .twd-membrane>header,#problem-tools-root .twd-relay>header,#problem-tools-root .twd-disclosure>header,#problem-tools-root .twd-downpour>header,#problem-tools-root .twd-membrane>footer,#problem-tools-root .twd-relay>footer,#problem-tools-root .twd-disclosure>footer,#problem-tools-root .twd-downpour>footer{z-index:20;min-width:0;color:color-mix(in srgb, var(--twd-secondary) 58%, transparent);letter-spacing:.16em;text-transform:uppercase;align-items:center;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:clamp(7px,1.05cqw,10px);font-weight:650;line-height:1;display:flex;position:relative}#problem-tools-root .twd-membrane>header,#problem-tools-root .twd-relay>header,#problem-tools-root .twd-disclosure>header,#problem-tools-root .twd-downpour>header{justify-content:space-between}#problem-tools-root .twd-membrane>header b,#problem-tools-root .twd-relay>header b,#problem-tools-root .twd-disclosure>header b,#problem-tools-root .twd-downpour>header b{color:var(--twd-accent);font-weight:750}#problem-tools-root .twd-membrane>footer,#problem-tools-root .twd-relay>footer,#problem-tools-root .twd-disclosure>footer,#problem-tools-root .twd-downpour>footer{gap:12px}#problem-tools-root .twd-membrane>footer>i,#problem-tools-root .twd-relay>footer>i,#problem-tools-root .twd-disclosure>footer>i,#problem-tools-root .twd-downpour>footer>i{background:color-mix(in srgb, var(--twd-secondary) 18%, transparent);flex:1;height:1px}#problem-tools-root .twd-membrane>footer b,#problem-tools-root .twd-relay>footer b,#problem-tools-root .twd-disclosure>footer b,#problem-tools-root .twd-downpour>footer b{color:color-mix(in srgb, var(--twd-secondary) 76%, transparent)}#problem-tools-root .twd-visually-hidden{clip:rect(0 0 0 0)!important;white-space:nowrap!important;width:1px!important;height:1px!important;margin:-1px!important;padding:0!important;position:absolute!important;overflow:hidden!important}#problem-tools-root .twd-membrane__field{border:1px solid color-mix(in srgb, var(--twd-secondary) 13%, transparent);background:linear-gradient(90deg, transparent 49.92%, color-mix(in srgb, var(--twd-secondary) 10%, transparent) 50%, transparent 50.08%), color-mix(in srgb, var(--twd-background) 92%, black);min-height:0;position:relative;overflow:hidden}#problem-tools-root .twd-membrane__grid{background-image:linear-gradient(color-mix(in srgb, var(--twd-secondary) 7%, transparent) 1px, transparent 1px), linear-gradient(90deg, color-mix(in srgb, var(--twd-secondary) 7%, transparent) 1px, transparent 1px);background-position:50%;background-size:clamp(24px,4.4cqw,46px) clamp(18px,4.1cqh,38px);position:absolute;inset:0;-webkit-mask-image:linear-gradient(90deg,#0000,#000 16% 84%,#0000);mask-image:linear-gradient(90deg,#0000,#000 16% 84%,#0000)}#problem-tools-root .twd-membrane__field>strong,#problem-tools-root .twd-membrane__slices span,#problem-tools-root .twd-membrane__slices em{min-width:0;font-family:var(--twd-font);font-size:clamp(2.2rem, 14cqw, var(--twd-font-size));font-weight:var(--twd-font-weight);letter-spacing:var(--twd-letter-spacing);line-height:var(--twd-line-height);text-align:center;white-space:nowrap;place-items:center;display:grid;position:absolute;inset:0}#problem-tools-root .twd-membrane__field>strong{z-index:1;color:color-mix(in srgb, var(--twd-secondary) 13%, transparent);text-shadow:0 20px 48px #00000085}#problem-tools-root .twd-membrane__slices{z-index:3;position:absolute;inset:0}#problem-tools-root .twd-membrane__slices span{clip-path:inset(var(--twd-band-top) 0 var(--twd-band-bottom) 0);transform:translate3d(var(--twd-pull-x), var(--twd-pull-y), 0);transition:transform var(--twd-membrane-spring) cubic-bezier(.2, .78, .24, 1);will-change:transform}#problem-tools-root .twd-membrane__slices em{color:var(--twd-secondary);text-shadow:var(--twd-fringe-left) 0 0 color-mix(in srgb, var(--twd-accent) 88%, transparent), var(--twd-fringe-right) 0 0 #68dfffad, 0 16px 38px #0000008c;font-style:normal}#problem-tools-root .twd-membrane[data-idle=true] .twd-membrane__slices em{animation:twd-membrane-current var(--twd-idle-duration) ease-in-out infinite alternate;animation-delay:var(--twd-band-delay)}#problem-tools-root .twd-membrane__node{z-index:8;left:var(--twd-pointer-x);top:var(--twd-pointer-y);border:1px solid var(--twd-accent);opacity:0;width:9px;height:9px;box-shadow:0 0 0 8px color-mix(in srgb, var(--twd-accent) 8%, transparent), 0 0 24px color-mix(in srgb, var(--twd-accent) 62%, transparent);border-radius:50%;transition:opacity .14s;position:absolute;transform:translate(-50%,-50%)}#problem-tools-root .twd-scene[data-active=true] .twd-membrane__node{opacity:1}#problem-tools-root .twd-membrane[data-layout="1"] .twd-membrane__grid{transform:rotate(2deg)scale(1.08)}#problem-tools-root .twd-membrane[data-layout="2"] .twd-membrane__field{border-color:color-mix(in srgb, var(--twd-accent) 42%, transparent)}#problem-tools-root .twd-membrane[data-layout="2"] .twd-membrane__grid{background-size:clamp(16px,2.6cqw,28px) clamp(16px,3cqh,28px)}@keyframes twd-membrane-current{0%,18%{filter:brightness(.96);translate:-1.5px}52%{filter:brightness(1.08);translate:1px}to{filter:brightness();translate:-.5px}}#problem-tools-root .twd-relay__message{z-index:2;perspective:900px;min-height:0;transform:rotateX(var(--twd-relay-tilt-x)) rotateY(var(--twd-relay-tilt-y));justify-content:center;align-items:center;gap:clamp(10px,2.2cqw,24px);transition:transform .18s cubic-bezier(.2,.8,.2,1);display:flex;position:relative}#problem-tools-root .twd-relay__message:before,#problem-tools-root .twd-relay__message:after{content:"";z-index:-1;background:linear-gradient(90deg, transparent, color-mix(in srgb, var(--twd-secondary) 16%, transparent), transparent);width:min(78cqw,760px);height:1px;position:absolute;left:50%;transform:translate(-50%)}#problem-tools-root .twd-relay__message:before{top:23%}#problem-tools-root .twd-relay__message:after{bottom:23%}#problem-tools-root .twd-relay__prefix,#problem-tools-root .twd-relay__word{font-family:var(--twd-font);font-size:clamp(1.65rem, 5cqw, var(--twd-font-size));font-weight:var(--twd-font-weight);letter-spacing:var(--twd-letter-spacing);white-space:nowrap;line-height:.88}#problem-tools-root .twd-relay__prefix{color:color-mix(in srgb, var(--twd-secondary) 88%, transparent);flex:0 auto}#problem-tools-root .twd-relay__badge{border:1px solid color-mix(in srgb, var(--twd-accent) 80%, white 8%);border-radius:var(--twd-badge-radius);background:var(--twd-accent);min-width:clamp(10.5rem,28cqw,28rem);min-height:clamp(4.2rem,13cqh,8.5rem);box-shadow:inset 0 1px 0 #ffffff3d, 0 22px 70px color-mix(in srgb, var(--twd-accent) 22%, transparent);flex:0 auto;position:relative;overflow:hidden}#problem-tools-root .twd-relay__badge:before{content:"";z-index:4;pointer-events:none;animation:twd-relay-sheen var(--twd-relay-sheen) ease-in-out infinite;background:linear-gradient(112deg,#0000 0 38%,#ffffff2e 46%,#0000 54% 100%);position:absolute;inset:0;transform:translate(-115%)}#problem-tools-root .twd-relay__stack{transform-style:preserve-3d;place-items:center;display:grid;position:absolute;inset:0}#problem-tools-root .twd-relay__word{color:var(--twd-background);backface-visibility:hidden;animation:twd-relay-forward var(--twd-relay-total) linear infinite;animation-delay:var(--twd-relay-delay);transform-origin:50%;will-change:opacity, filter, transform;justify-content:center;align-items:center;display:flex;position:absolute}#problem-tools-root .twd-relay__word i{transform:translateY(var(--twd-letter-shift));font-style:normal;display:inline-block}#problem-tools-root .twd-relay[data-direction=Reverse] .twd-relay__word{animation-name:twd-relay-reverse}#problem-tools-root .twd-relay[data-direction=Center] .twd-relay__word{animation-name:twd-relay-center}#problem-tools-root .twd-relay[data-layout="1"] .twd-relay__badge{border-color:color-mix(in srgb, var(--twd-secondary) 70%, transparent);background:var(--twd-secondary)}#problem-tools-root .twd-relay[data-layout="1"] .twd-relay__word{color:var(--twd-background)}#problem-tools-root .twd-relay[data-layout="2"] .twd-relay__badge{background:color-mix(in srgb, var(--twd-background) 82%, transparent);box-shadow:0 0 0 1px color-mix(in srgb, var(--twd-accent) 18%, transparent), 0 22px 70px #0000005c;border-width:2px}#problem-tools-root .twd-relay[data-layout="2"] .twd-relay__word{color:var(--twd-accent)}@keyframes twd-relay-forward{0%,20%{opacity:1;filter:blur();transform:translateZ(0)rotateX(0)}29%{opacity:0;filter:blur(3px);transform:translateZ(-28px)rotateX(-78deg)}90%{opacity:0;filter:blur(3px);transform:translateZ(-28px)rotateX(78deg)}to{opacity:1;filter:blur();transform:translateZ(0)rotateX(0)}}@keyframes twd-relay-reverse{0%,20%{opacity:1;filter:blur();transform:translateZ(0)rotateX(0)}29%{opacity:0;filter:blur(3px);transform:translateZ(-28px)rotateX(78deg)}90%{opacity:0;filter:blur(3px);transform:translateZ(-28px)rotateX(-78deg)}to{opacity:1;filter:blur();transform:translateZ(0)rotateX(0)}}@keyframes twd-relay-center{0%,20%{opacity:1;filter:blur();transform:translateZ(0)scaleX(1)}29%{opacity:0;filter:blur(3px);transform:translateZ(-35px)scaleX(.45)}90%{opacity:0;filter:blur(3px);transform:translateZ(-35px)scaleX(1.45)}to{opacity:1;filter:blur();transform:translateZ(0)scaleX(1)}}@keyframes twd-relay-sheen{0%,28%{transform:translate(-115%)}52%{transform:translate(115%)}to{transform:translate(115%)}}#problem-tools-root .twd-disclosure__page{border-block:1px solid color-mix(in srgb, var(--twd-secondary) 16%, transparent);background:linear-gradient(90deg, color-mix(in srgb, var(--twd-secondary) 3%, transparent) 1px, transparent 1px), linear-gradient(color-mix(in srgb, var(--twd-secondary) 3%, transparent) 1px, transparent 1px);background-size:34px 34px;place-items:center;min-height:0;padding:clamp(20px,5cqh,52px) clamp(14px,5cqw,58px);display:grid;position:relative}#problem-tools-root .twd-disclosure__page p{z-index:2;width:min(100%,980px);font-family:var(--twd-font);font-size:clamp(1.35rem, 4.8cqw, var(--twd-font-size-small));font-weight:var(--twd-font-weight);letter-spacing:var(--twd-letter-spacing-tight);text-transform:uppercase;flex-wrap:wrap;place-content:center flex-start;gap:.2em .34em;margin:0;line-height:1.04;display:flex;position:relative}#problem-tools-root .twd-disclosure__word{place-items:center start;display:inline-grid;position:relative;overflow:hidden}#problem-tools-root .twd-disclosure__word strong,#problem-tools-root .twd-disclosure__word i{grid-area:1/1}#problem-tools-root .twd-disclosure__word strong{color:var(--twd-secondary);opacity:var(--twd-word-opacity);transform:translateY(var(--twd-word-shift));transition:opacity .13s linear,transform .18s cubic-bezier(.2,.8,.2,1)}#problem-tools-root .twd-disclosure__word i{width:calc(100% + var(--twd-block-offset));background:var(--twd-accent);height:.86em;transform:scaleX(var(--twd-word-cover));transform-origin:0;box-shadow:0 0 0 1px color-mix(in srgb, var(--twd-accent) 72%, black 18%);transition:transform .18s cubic-bezier(.2,.8,.2,1)}#problem-tools-root .twd-disclosure[data-direction=Reverse] .twd-disclosure__word i{transform-origin:100%}#problem-tools-root .twd-disclosure[data-direction=Center] .twd-disclosure__word i{transform-origin:50%}#problem-tools-root .twd-disclosure[data-live-scrub=false] .twd-disclosure__word strong{animation:twd-disclosure-text var(--twd-disclosure-cycle) cubic-bezier(.2, .8, .2, 1) infinite;animation-delay:calc(var(--twd-order-delay) - var(--twd-disclosure-cycle))}#problem-tools-root .twd-disclosure[data-live-scrub=false] .twd-disclosure__word i{animation:twd-disclosure-block var(--twd-disclosure-cycle) cubic-bezier(.2, .8, .2, 1) infinite;animation-delay:calc(var(--twd-order-delay) - var(--twd-disclosure-cycle))}#problem-tools-root .twd-disclosure__rule{z-index:1;border-left:1px solid color-mix(in srgb, var(--twd-accent) 38%, transparent);pointer-events:none;position:absolute;inset:12% 5%}#problem-tools-root .twd-disclosure__rule span{top:var(--twd-pointer-y);background:var(--twd-accent);width:5px;height:5px;box-shadow:0 0 18px var(--twd-accent);border-radius:50%;position:absolute;left:-3px}#problem-tools-root .twd-disclosure[data-layout="1"] .twd-disclosure__word:nth-child(3n+2) i{background:var(--twd-secondary)}#problem-tools-root .twd-disclosure[data-layout="1"] .twd-disclosure__word:nth-child(3n+2) strong{color:var(--twd-accent)}#problem-tools-root .twd-disclosure[data-layout="2"] .twd-disclosure__page{background-color:color-mix(in srgb, var(--twd-secondary) 5%, transparent)}#problem-tools-root .twd-disclosure[data-layout="2"] .twd-disclosure__word i{align-self:end;height:.18em}@keyframes twd-disclosure-text{0%,10%{opacity:.12;transform:translateY(.25em)}20%,72%{opacity:1;transform:translateY(0)}90%,to{opacity:.12;transform:translateY(-.18em)}}@keyframes twd-disclosure-block{0%,10%{transform:scaleX(1)}21%,72%{transform:scaleX(0)}88%,to{transform:scaleX(1)}}#problem-tools-root .twd-downpour{background:linear-gradient(180deg, color-mix(in srgb, var(--twd-accent) 4%, transparent), transparent 26%), var(--twd-background)}#problem-tools-root .twd-downpour__grid{z-index:0;opacity:.65;background-image:linear-gradient(color-mix(in srgb, var(--twd-secondary) 4%, transparent) 1px, transparent 1px), linear-gradient(90deg, color-mix(in srgb, var(--twd-secondary) 4%, transparent) 1px, transparent 1px);background-size:24px 24px;position:absolute;inset:0;-webkit-mask-image:linear-gradient(#000,#0000 92%);mask-image:linear-gradient(#000,#0000 92%)}#problem-tools-root .twd-downpour__columns{z-index:1;transform:skewX(var(--twd-rain-bearing));transform-origin:top;position:absolute;inset:clamp(46px,8cqh,70px) 0 clamp(34px,6cqh,56px);overflow:hidden}#problem-tools-root .twd-downpour__column{top:-46%;left:var(--twd-column-x);color:var(--twd-secondary);letter-spacing:.18em;animation:twd-downpour-fall var(--twd-column-duration) linear infinite;animation-delay:var(--twd-column-delay);will-change:transform;flex-direction:column;align-items:center;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:clamp(8px,1.45cqw,14px);font-weight:650;line-height:1.35;display:flex;position:absolute}#problem-tools-root .twd-downpour__column i{writing-mode:vertical-rl;color:#0000;text-orientation:upright;background:linear-gradient(180deg, var(--twd-secondary), var(--twd-accent) 28%, color-mix(in srgb, var(--twd-accent) 55%, transparent) 64%, transparent 100%);filter:drop-shadow(0 0 6px color-mix(in srgb, var(--twd-accent) 32%, transparent));-webkit-background-clip:text;background-clip:text;font-style:normal}#problem-tools-root .twd-downpour__column b{color:#0000;background:var(--twd-secondary);width:.5em;height:.5em;box-shadow:0 0 12px var(--twd-secondary), 0 0 28px color-mix(in srgb, var(--twd-accent) 68%, transparent);border-radius:50%;margin-top:.4em;overflow:hidden}#problem-tools-root .twd-downpour__transmission{z-index:5;border:1px solid color-mix(in srgb, var(--twd-secondary) 17%, transparent);background:color-mix(in srgb, var(--twd-background) 82%, transparent);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);place-self:center;gap:clamp(8px,1.7cqh,15px);width:min(74cqw,720px);padding:clamp(17px,4cqh,34px) clamp(18px,4cqw,42px);display:grid;position:relative;box-shadow:0 32px 100px #0000007a}#problem-tools-root .twd-downpour__transmission:before{content:"";background:var(--twd-accent);width:24%;height:2px;box-shadow:0 0 18px color-mix(in srgb, var(--twd-accent) 74%, transparent);position:absolute;top:-1px;left:9%}#problem-tools-root .twd-downpour__transmission small,#problem-tools-root .twd-downpour__transmission span{color:color-mix(in srgb, var(--twd-secondary) 56%, transparent);letter-spacing:.17em;text-transform:uppercase;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:clamp(7px,1cqw,10px);font-weight:650}#problem-tools-root .twd-downpour__transmission strong{color:var(--twd-secondary);font-family:var(--twd-font);font-size:clamp(1.55rem, 5.4cqw, var(--twd-font-size-panel));font-weight:var(--twd-font-weight);letter-spacing:var(--twd-letter-spacing);text-wrap:balance;text-transform:uppercase;white-space:normal;line-height:.9}#problem-tools-root .twd-downpour[data-layout="1"] .twd-downpour__column:nth-child(2n) i{background-image:linear-gradient(180deg, var(--twd-secondary), #68dfff 34%, #68dfff73 68%, transparent)}#problem-tools-root .twd-downpour[data-layout="2"] .twd-downpour__transmission{border-color:color-mix(in srgb, var(--twd-accent) 48%, transparent)}#problem-tools-root .twd-downpour[data-layout="2"] .twd-downpour__column:nth-child(3n){opacity:.28}@keyframes twd-downpour-fall{0%{opacity:0;transform:translate(-50%,-115%)}8%{opacity:1}82%{opacity:1}to{opacity:0;transform:translate(-50%,235cqh)}}#problem-tools-root .twd-scene.is-paused *,#problem-tools-root .demo-preview.is-offscreen .twd-scene *{animation-play-state:paused!important}#problem-tools-root .twd-scene.is-compact .twd-membrane,#problem-tools-root .twd-scene.is-compact .twd-relay,#problem-tools-root .twd-scene.is-compact .twd-disclosure,#problem-tools-root .twd-scene.is-compact .twd-downpour{gap:8px;padding:14px}#problem-tools-root .twd-scene.is-compact header,#problem-tools-root .twd-scene.is-compact footer{font-size:7px}#problem-tools-root .twd-scene.is-compact .twd-relay__message{flex-direction:column;gap:9px}#problem-tools-root .twd-scene.is-compact .twd-relay__prefix,#problem-tools-root .twd-scene.is-compact .twd-relay__word{font-size:clamp(1.25rem,8.4cqw,2.35rem)}#problem-tools-root .twd-scene.is-compact .twd-relay__badge{min-width:66cqw;min-height:25cqh}#problem-tools-root .twd-scene.is-compact .twd-disclosure__page{padding:14px 11px}#problem-tools-root .twd-scene.is-compact .twd-disclosure__page p{font-size:clamp(.92rem,5.4cqw,1.35rem)}#problem-tools-root .twd-scene.is-compact .twd-downpour__transmission{width:78cqw;padding:15px}#problem-tools-root .twd-scene.is-compact .twd-downpour__transmission strong{font-size:clamp(1.25rem,8cqw,2.2rem)}@media (max-width:680px){#problem-tools-root .twd-relay__message{flex-direction:column}#problem-tools-root .twd-relay__badge{min-width:min(76cqw,28rem)}#problem-tools-root .twd-disclosure__page p{font-size:clamp(1.12rem,5.6cqw,2rem)}#problem-tools-root .twd-downpour__transmission{width:80cqw}}@media (prefers-reduced-motion:reduce){#problem-tools-root .twd-scene *,#problem-tools-root .twd-scene :before,#problem-tools-root .twd-scene :after{scroll-behavior:auto!important;transition-duration:.001ms!important;animation:none!important}#problem-tools-root .twd-membrane__slices span{transform:none}#problem-tools-root .twd-relay__word{opacity:0;filter:none;transform:none}#problem-tools-root .twd-relay__word:first-child{opacity:1}#problem-tools-root .twd-disclosure__word strong{opacity:1;transform:none}#problem-tools-root .twd-disclosure__word i{transform:scaleX(0)}#problem-tools-root .twd-downpour__column{opacity:.38;top:18%;transform:translate(-50%)}}