.std-game{height:100dvh;font-family:'Nunito',sans-serif;background:radial-gradient(ellipse at 0 75%,#75c38e99 0,transparent 35%),radial-gradient(ellipse at 100% 90%,#75c38e99 0,transparent 35%),linear-gradient(#75d6ff,#d3f7ff 65%,#ace2ef);isolation:isolate;pointer-events:none;box-sizing:border-box;transition:opacity .2s,visibility .2s}
.std-game.active{pointer-events:auto}.std-game *{box-sizing:border-box}.std-game [hidden]{display:none!important}.std-game :where(button){font:inherit;cursor:pointer;-webkit-tap-highlight-color:transparent;touch-action:manipulation}.std-game button:focus-visible,.std-picture:focus-visible{outline:3px solid #ffd12d;outline-offset:2px}
.std-header{height:60px;display:flex;align-items:center;gap:20px;padding:6px 20px;flex-shrink:0;border:0;border-radius:0;background:linear-gradient(110deg,#1bb8f7,#237ff7);box-shadow:0 4px 16px #1475b644;z-index:2}
.std-header h1{display:flex;align-items:center;gap:7px;flex:1;margin:0;font-size:30px;line-height:1;font-weight:1000;color:white;text-shadow:0 3px 0 #15458c;white-space:nowrap}.std-header h1>span{font-size:39px;margin-right:4px}.std-header em{font-style:normal;color:#ffe271}
.std-progress{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;padding:6px 20px;border-radius:17px;background:#f5fcffed;color:#103b7d;font-size:12px;font-weight:1000;white-space:nowrap}.std-progress>div:first-child{display:flex;gap:18px}.std-progress>div:first-child>span+span{border-left:1px solid #b5d8f7;padding-left:18px}
.std-score{position:static;transform:none;display:flex;align-items:center;gap:8px;padding:8px 19px;border-radius:24px;background:linear-gradient(#276bbd,#173d83);color:#c9e2ff;font-size:12px;font-weight:1000;white-space:nowrap}.std-score>span{font-size:28px}.std-score strong{font-size:25px;color:white}
.std-header nav{display:flex;gap:8px}.std-header nav button{height:36px;width:36px;border:0;border-radius:50%;background:#f7fcff;color:#087cee;font-size:27px;font-weight:1000;line-height:1;box-shadow:0 3px 0 #176ace}
.std-main{display:flex;flex:1;min-height:0;flex-direction:column;align-items:center;padding:15px 20px 13px;gap:8px}.std-stage{width:100%;flex:1;min-height:0;display:flex;align-items:center;justify-content:center}.std-pair{display:flex;width:var(--pair-width,100%);height:var(--pair-height,100%);padding:10px;gap:12px;background:#fffdf7;border-radius:25px;box-shadow:0 9px 25px #2888a944,0 3px 0 #ffffff77;flex-shrink:0}.std-picture{display:block;width:100%;height:100%;min-width:0;flex:1;overflow:hidden;border-radius:17px;cursor:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='40' height='40' viewBox='0 0 40 40'%3E%3Cpath d='M25 25l10 10' stroke='%23194083' stroke-width='8' stroke-linecap='round'/%3E%3Cpath d='M25 25l10 10' stroke='%23ffcd3c' stroke-width='5' stroke-linecap='round'/%3E%3Ccircle cx='16' cy='16' r='13' fill='%23a5efff' fill-opacity='.3' stroke='%231a68b7' stroke-width='3'/%3E%3Cpath d='M9 10q3-4 7-4' fill='none' stroke='white' stroke-width='3' stroke-linecap='round'/%3E%3C/svg%3E") 16 16,crosshair;touch-action:none;user-select:none;outline:none}.std-picture image{pointer-events:none}.std-markers{pointer-events:none}.std-marker{fill:#00be7d15;stroke:#00bd7b;stroke-width:5;vector-effect:non-scaling-stroke;animation:std-ring .35s ease-out}.std-marker-check{fill:#fff;stroke:#069867;paint-order:stroke;stroke-width:6;stroke-linejoin:round;font-family:'Nunito',sans-serif;font-size:37px;font-weight:1000}.std-reticle{pointer-events:none;stroke:white;stroke-width:2;vector-effect:non-scaling-stroke;fill:none;filter:drop-shadow(0 1px 3px #174580)}
.std-feedback{margin:2px 0 0;padding:7px 24px;background:#f9fdffed;border:1px solid #fff;border-radius:23px;box-shadow:0 3px 10px #3997be22;color:#144377;font-size:14px;font-weight:900;line-height:1.2;text-align:center;max-width:100%;flex-shrink:0;min-height:33px}.std-feedback[data-kind=correct]{color:#0a8559;background:#e4fff1}.std-feedback[data-kind=wrong]{color:#a76934;background:#fff4e2}
.std-popup{position:absolute;inset:0;z-index:10;display:flex;align-items:center;justify-content:center;padding:10px;background:#1e487760;backdrop-filter:blur(5px);overflow:hidden}.std-dialog{width:570px;flex-shrink:0;position:relative;padding:22px 26px;border:4px solid #b7f0ff;border-radius:25px;background:linear-gradient(135deg,#fffef1,#edfbff);box-shadow:0 7px 0 #6aadd166,0 20px 50px #1c527777;text-align:center;transform:scale(var(--dialog-scale,1))}.std-dialog-close{position:absolute;right:9px;top:9px;width:30px;height:30px;border:0;border-radius:50%;background:#d8edfa;color:#2d628a;font-size:25px}.std-kicker{color:#5288ab;font-size:11px;font-weight:1000;letter-spacing:2px}.std-dialog h2{font-size:32px;line-height:1.1;font-weight:1000;color:#153e77;margin:7px 0 11px}.std-dialog p{color:#507893;font-size:16px;line-height:1.3;font-weight:900;margin:10px 0}.std-guide-mission{background:#ffe9ab;border-radius:15px;padding:8px;font-size:15px;color:#164077;font-weight:1000}.std-demo{width:100%;display:block;border-radius:17px;background:#cdf1ff;margin:12px 0}.std-demo text{font-family:'Nunito',sans-serif;font-weight:1000;fill:#164077}.std-caption{min-height:42px}.std-steps{display:flex;justify-content:center;gap:7px}.std-steps button{border:0;border-radius:16px;background:#dceaf4;color:#67859b;padding:5px 11px;font-size:12px;font-weight:900}.std-steps button.active{background:#bceeff;color:#096aaf}.std-actions{display:flex;justify-content:center;gap:12px;margin-top:14px}.std-primary,.std-secondary{border:2px solid #65dd9c;border-radius:17px;background:linear-gradient(#2ece8a,#07ab70);box-shadow:0 5px 0 #01824f;color:white;padding:11px 22px;font-size:19px;font-weight:1000;white-space:nowrap}.std-secondary{background:#f9fdff;border-color:#c1dbe8;box-shadow:0 5px 0 #90b6cb;color:#4b748b}.std-medal{font-size:68px;line-height:1.1;animation:std-medal .65s ease-out}.std-stars{color:#ffbd26;filter:drop-shadow(0 3px 0 #cf9816);font-size:46px;letter-spacing:4px}.std-final-score{border:2px solid #c8eafa;border-radius:16px;background:white;padding:9px;margin-top:10px;color:#194a84;font-size:22px;font-weight:1000}.std-final-score strong{font-size:30px;color:#158be9;margin-left:15px}.std-effects{position:fixed;inset:0;z-index:6;overflow:hidden;pointer-events:none}.std-spark{position:absolute;color:#ffd447;font-size:24px;animation:std-spark .7s forwards}.std-confetti{position:absolute;top:-15px;width:9px;height:14px;animation:std-confetti 2.4s linear infinite;pointer-events:none}.std-turn{animation:std-turn .4s ease-out}.std-flash{animation:std-flash .3s ease-out}
@keyframes std-ring{from{opacity:0;stroke-width:12}to{opacity:1;stroke-width:5}}@keyframes std-medal{0%{scale:.5;rotate:-12deg}65%{scale:1.1;rotate:8deg}100%{scale:1;rotate:0deg}}@keyframes std-turn{from{opacity:.4;scale:.96}to{opacity:1;scale:1}}@keyframes std-flash{50%{box-shadow:inset 0 0 0 3px #ffa93f}}@keyframes std-spark{to{translate:var(--dx) var(--dy);opacity:0;scale:.4}}@keyframes std-confetti{to{transform:translateY(900px) rotate(720deg)}}
@media(max-width:900px),(max-height:500px){.std-header{height:37px;padding:3px 9px;gap:9px}.std-header h1{font-size:18px;gap:3px}.std-header h1>span{font-size:24px;margin-right:1px}.std-progress{padding:3px 9px;gap:3px;font-size:9px;border-radius:12px}.std-progress>div:first-child{gap:7px}.std-progress>div:first-child>span+span{padding-left:7px}.std-score{padding:3px 10px;gap:5px;font-size:9px}.std-score>span{font-size:20px}.std-score strong{font-size:17px}.std-header nav{gap:5px}.std-header nav button{width:26px;height:26px;font-size:21px}.std-main{padding:8px 9px 8px;gap:5px}.std-pair{padding:6px;gap:7px;border-radius:16px}.std-picture{border-radius:10px}.std-feedback{font-size:10px;padding:4px 12px;min-height:22px}}
@media(max-height:330px){.std-header{height:30px}.std-header h1{font-size:16px}.std-header h1>span{font-size:20px}.std-header nav button{height:23px;width:23px}.std-progress{gap:2px}.std-main{padding:5px 8px 5px;gap:3px}.std-feedback{font-size:9px;padding:3px 10px;min-height:19px}}
@media(orientation:portrait){.std-header{height:65px;display:grid;grid-template-columns:1fr auto;grid-template-rows:26px 23px;gap:5px 6px;padding:5px 9px}.std-header h1{grid-area:1/1;font-size:18px}.std-header h1>span{font-size:24px}.std-header nav{grid-area:1/2}.std-progress{grid-area:2/1;justify-self:start;padding:3px 8px;font-size:9px;flex-direction:row;gap:6px}.std-score{grid-area:2/2;padding:2px 7px;font-size:9px}.std-score>span{font-size:17px}.std-score strong{font-size:15px}.std-main{padding:10px 8px 9px;gap:7px}.std-pair{flex-direction:column;gap:8px;padding:7px}.std-picture{min-height:0;flex:1}.std-feedback{font-size:10px;min-height:26px}}
@media(prefers-reduced-motion:reduce){.std-game *{animation:none!important;transition:none!important}.std-spark,.std-confetti{display:none}}
.std-dialog:has(.std-medal){overflow:hidden;border-color:#ffe08c;animation:std-win-enter .5s ease-out}.std-victory-glow{position:absolute;width:280px;height:280px;left:calc(50% - 140px);top:-50px;border-radius:50%;background:repeating-conic-gradient(from 0deg,#ffdf762b 0deg 15deg,transparent 15deg 30deg);animation:std-rays 18s linear infinite;pointer-events:none}.std-dialog:has(.std-medal)>:not(.std-victory-glow){position:relative}.std-dialog:has(.std-medal) .std-kicker{display:block;color:#af7a24;margin-bottom:8px}.std-stars span{display:inline-block;color:#cedee7}.std-stars .earned{color:#ffbd26;animation:std-star .5s var(--star-delay) both cubic-bezier(.2,.8,.3,1.5)}.std-dialog:has(.std-medal) .std-primary{animation:std-cta 1.8s 1.4s infinite}
@keyframes std-win-enter{from{opacity:0;translate:0 22px}to{opacity:1;translate:0 0}}@keyframes std-star{from{opacity:0;scale:.3;rotate:-25deg}to{opacity:1;scale:1;rotate:0deg}}@keyframes std-rays{to{rotate:360deg}}@keyframes std-cta{50%{box-shadow:0 5px 0 #01824f,0 0 0 6px #20c98124}}
@media(prefers-reduced-motion:reduce){.std-victory-glow{display:none}}
@media(orientation:portrait){.std-header{grid-template-columns:minmax(0,1fr) auto}.std-header h1{grid-area:1/1/2/3;padding-right:62px;min-width:0;font-size:clamp(14px,4.8vw,18px)}.std-header nav{justify-self:end}.std-score{justify-self:end}.std-stage{align-items:center;justify-content:center;overflow:hidden}.std-picture{touch-action:none}.std-pair{box-shadow:0 4px 16px #2888a933}}

@media(orientation:portrait){.std-header{height:56px;grid-template-rows:24px 20px;gap:2px 6px;padding:5px 9px}.std-main{padding:7px 8px;gap:5px}.std-feedback{font-size:9px;min-height:23px;padding:4px 9px}}
.std-game>.std-main{width:100%;max-width:none;height:auto;margin:0;flex:1 1 0}
html.std-playing,html.std-playing body{width:100%!important;min-width:0!important}