*{margin:0;padding:0;box-sizing:border-box}html,body{width:100%;height:100%;overflow:hidden}body{font-family:Hiragino Kaku Gothic ProN,Hiragino Sans,Meiryo,sans-serif;background-color:#f8fbff;color:#333;height:100vh;display:flex;flex-direction:column}#site-header{background:linear-gradient(135deg,#667eea,#764ba2);padding:6px 16px;box-shadow:0 2px 8px #00000026;flex-shrink:0}.header-content{width:100%;display:flex;align-items:center;justify-content:space-between}.site-logo{display:flex;align-items:center;gap:8px;text-decoration:none;color:#fff}.logo-icon{font-size:20px}.logo-text{font-size:16px;font-weight:700;letter-spacing:.05em}.logo-description{font-size:13px;font-weight:400;opacity:.9;margin-left:10px;padding-left:10px;border-left:1px solid rgba(255,255,255,.5)}#menu-toggle-btn{display:flex;align-items:center;gap:6px;padding:6px 12px;border:none;border-radius:20px;background:#fff3;color:#fff;font-size:12px;font-weight:700;cursor:pointer;transition:background .2s}#menu-toggle-btn:hover{background:#ffffff4d}.hamburger-icon{font-size:18px}.menu-toggle-text{font-size:12px}.language-switcher{position:relative;margin-left:auto;margin-right:8px}.lang-current{display:flex;align-items:center;gap:4px;padding:4px 8px;border:1px solid rgba(255,255,255,.4);border-radius:6px;background:#ffffff1a;color:#fff;font-size:14px;cursor:pointer;transition:all .2s}.lang-current:hover{background:#fff3;border-color:#fff}.lang-flag{font-size:16px;line-height:1}.lang-arrow{font-size:8px;opacity:.8;transition:transform .2s}.language-switcher.open .lang-arrow{transform:rotate(180deg)}.lang-dropdown{position:absolute;top:100%;right:0;margin-top:4px;background:#fff;border-radius:8px;box-shadow:0 4px 12px #00000026;overflow:hidden;opacity:0;visibility:hidden;transform:translateY(-8px);transition:opacity .2s,transform .2s,visibility .2s;z-index:100;min-width:120px}.language-switcher.open .lang-dropdown{opacity:1;visibility:visible;transform:translateY(0)}.lang-option{display:flex;align-items:center;gap:8px;width:100%;padding:10px 14px;border:none;background:transparent;color:#333;font-size:13px;text-align:left;cursor:pointer;transition:background .15s}.lang-option:hover{background:#f5f5f5}.lang-option.active{background:#e8f4fd;color:#667eea;font-weight:700}.lang-option .lang-flag{font-size:18px}.lang-name{font-size:13px}#menu-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:#00000080;z-index:998;opacity:0;transition:opacity .3s ease}#menu-overlay:not(.hidden){opacity:1}#slide-menu{position:fixed;top:0;left:0;width:320px;max-width:85vw;height:100%;background:#fff;z-index:999;display:flex;flex-direction:column;box-shadow:4px 0 20px #0003;transform:translate(-100%);transition:transform .3s ease}#slide-menu:not(.hidden){transform:translate(0)}#slide-menu-header{display:flex;align-items:center;justify-content:space-between;padding:16px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}#slide-menu-header h2{font-size:16px;font-weight:700;margin:0}#menu-close-btn{width:32px;height:32px;border:none;border-radius:50%;background:#fff3;color:#fff;font-size:18px;cursor:pointer;transition:background .2s}#menu-close-btn:hover{background:#ffffff4d}#difficulty-filter{display:flex;gap:4px;padding:12px;border-bottom:1px solid #eee;flex-shrink:0}.difficulty-btn{flex:1;padding:8px 4px;border:none;border-radius:8px;background:#f0f0f0;color:#666;font-size:11px;font-weight:700;cursor:pointer;transition:all .15s}.difficulty-btn:hover{background:#e0e0e0}.difficulty-btn.active{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}#range-filter{display:flex;flex-wrap:wrap;gap:6px;padding:10px 12px;border-bottom:1px solid #eee;flex-shrink:0}#range-filter:empty{display:none}.range-btn{padding:6px 12px;border:none;border-radius:16px;background:#f5f5f5;color:#666;font-size:12px;font-weight:700;cursor:pointer;transition:all .15s}.range-btn:hover{background:#e8e8e8}.range-btn.active{background:#333;color:#fff}#stage-list{overflow-y:auto;flex:1}.stage-empty{padding:20px;text-align:center;color:#999;font-size:13px}.stage-group-header{padding:10px 16px;font-size:13px;font-weight:700;color:#fff;position:sticky;top:0;z-index:1}.stage-group-header.difficulty-easy{background:linear-gradient(135deg,#4caf50,#2e7d32)}.stage-group-header.difficulty-normal{background:linear-gradient(135deg,#ff9800,#f57c00)}.stage-group-header.difficulty-hard{background:linear-gradient(135deg,#e91e63,#c2185b)}.stage-item{display:flex;align-items:center;gap:10px;width:100%;padding:12px 16px;border:none;background:none;color:#333;font-size:14px;text-align:left;cursor:pointer;transition:background .15s}.stage-item:first-child{border-radius:12px 12px 0 0}.stage-item:last-child{border-radius:0 0 12px 12px}.stage-item:only-child{border-radius:12px}.stage-item:hover{background:#f0f0f0}.stage-item.active{background:#ffe66d;font-weight:700}.stage-item-number{display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;color:#fff;font-size:12px;font-weight:700}.stage-item-number.difficulty-easy{background:linear-gradient(135deg,#4caf50,#2e7d32)}.stage-item-number.difficulty-normal{background:linear-gradient(135deg,#ff9800,#f57c00)}.stage-item-number.difficulty-hard{background:linear-gradient(135deg,#e91e63,#c2185b)}.stage-item.active .stage-item-number{background:linear-gradient(135deg,#667eea,#764ba2)!important}.stage-item-title{flex:1}.stage-item-info{display:flex;align-items:center;gap:6px}.stage-cleared-mark{color:#4caf50;font-weight:700;font-size:14px}.stage-best-time{font-size:10px;color:#9b59b6;font-variant-numeric:tabular-nums}.stage-item-difficulty{font-size:11px;color:#888}#app{display:flex;flex-direction:column;align-items:center;width:100%;max-width:900px;margin:0 auto;padding:8px;flex:1;min-height:0}#status{display:flex;align-items:center;gap:12px;width:100%;padding:5px 12px;margin-bottom:6px;background-color:#fff5e6;border-radius:8px;font-size:14px;font-weight:700;flex-shrink:0}#stage-name{color:#ff9a3c}#timer{color:#9b59b6;font-variant-numeric:tabular-nums;margin-left:auto}#remaining{color:#5cb8e4}.hint-btn{display:flex;align-items:center;gap:4px;padding:4px 10px;border:none;border-radius:12px;background:linear-gradient(180deg,#ffd93d,#ffb800);color:#333;font-size:12px;font-weight:700;cursor:pointer;transition:transform .1s,box-shadow .1s;box-shadow:0 2px #cc9500}.hint-btn:hover{transform:translateY(-1px);box-shadow:0 3px #cc9500}.hint-btn:active{transform:translateY(1px);box-shadow:0 1px #cc9500}.hint-btn:disabled{opacity:.5;cursor:not-allowed;transform:none}.hint-icon{font-size:14px}.hint-text{font-size:11px}.hint-count{display:inline-flex;align-items:center;justify-content:center;min-width:18px;height:18px;padding:0 4px;background:#ff6b6b;color:#fff;font-size:10px;font-weight:700;border-radius:9px;margin-left:2px}.hint-count.empty{background:#999}#game-area{display:flex;flex-direction:column;gap:4px;width:100%;margin-bottom:6px;flex:1;min-height:0}.image-container{position:relative;width:100%;flex:1;min-height:0;border-radius:10px;overflow:hidden;box-shadow:0 4px 12px #0000001a;background-color:#fff;display:flex;align-items:center;justify-content:center}.image-container img{max-width:100%;max-height:100%;width:auto;height:auto;display:block;-webkit-user-select:none;user-select:none;-webkit-user-drag:none;-webkit-touch-callout:none}.overlay{position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none}.correct-marker{position:absolute;border:4px solid #4CAF50;border-radius:50%;background-color:#4caf5033;transform:translate(-50%,-50%);animation:correctPop .4s ease-out}@keyframes correctPop{0%{transform:translate(-50%,-50%) scale(0);opacity:0}50%{transform:translate(-50%,-50%) scale(1.3)}to{transform:translate(-50%,-50%) scale(1);opacity:1}}.wrong-marker{position:absolute;width:30px;height:30px;transform:translate(-50%,-50%);pointer-events:none;animation:wrongShake .4s ease-out forwards}.wrong-marker:before,.wrong-marker:after{content:"";position:absolute;top:50%;left:50%;width:100%;height:4px;background-color:#f44336;border-radius:2px}.wrong-marker:before{transform:translate(-50%,-50%) rotate(45deg)}.wrong-marker:after{transform:translate(-50%,-50%) rotate(-45deg)}@keyframes wrongShake{0%,to{transform:translate(-50%,-50%);opacity:1}20%{transform:translate(calc(-50% - 5px),-50%)}40%{transform:translate(calc(-50% + 5px),-50%)}60%{transform:translate(calc(-50% - 3px),-50%)}80%{transform:translate(calc(-50% + 3px),-50%);opacity:.5}to{opacity:0}}.hint-marker{position:absolute;border:3px solid #FFD93D;border-radius:50%;background-color:#ffd93d4d;transform:translate(-50%,-50%);animation:hintPulse 1.5s ease-in-out infinite;pointer-events:none}@keyframes hintPulse{0%,to{transform:translate(-50%,-50%) scale(1);opacity:.8;box-shadow:0 0 #ffd93db3}50%{transform:translate(-50%,-50%) scale(1.1);opacity:1;box-shadow:0 0 20px 10px #ffd93d4d}}@keyframes popIn{0%{transform:translate(-50%,-50%) scale(0);opacity:0}50%{transform:translate(-50%,-50%) scale(1.2)}to{transform:translate(-50%,-50%) scale(1);opacity:1}}#button-area{display:flex;justify-content:center;align-items:center;gap:10px;width:100%;min-height:50px;padding:6px 0;flex-shrink:0}.game-btn{font-size:16px;font-weight:700;padding:10px 24px;border:none;border-radius:20px;cursor:pointer;transition:transform .1s,box-shadow .1s;-webkit-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent}.game-btn:active{transform:scale(.95)}#btn-next{background:linear-gradient(180deg,#5cb8e4,#3a9fd9);color:#fff;box-shadow:0 4px #2878a8}#btn-next:active{box-shadow:0 2px #2878a8;transform:translateY(2px)}#btn-retry{background:linear-gradient(180deg,#9b59b6,#8e44ad);color:#fff;box-shadow:0 4px #6c3483}#btn-retry:active{box-shadow:0 2px #6c3483;transform:translateY(2px)}#clear-overlay{position:fixed;top:0;left:0;width:100vw;height:100vh;background:#00000080;z-index:100;display:flex;align-items:center;justify-content:center;animation:fadeIn .3s ease-out}#clear-dialog{text-align:center;padding:30px 40px;background:linear-gradient(180deg,#ffe66d,#ffd93d);border-radius:24px;box-shadow:0 8px 32px #0000004d;animation:popIn .4s ease-out;position:relative;overflow:visible}#confetti-container{position:fixed;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:101;overflow:hidden}.confetti{position:absolute;width:10px;height:10px;top:-10px;animation:confettiFall 3s ease-out forwards}.confetti:nth-child(odd){border-radius:50%}.confetti:nth-child(2n){border-radius:2px}@keyframes confettiFall{0%{transform:translateY(0) rotate(0);opacity:1}to{transform:translateY(100vh) rotate(720deg);opacity:0}}#reward-modal{position:fixed;top:0;left:0;width:100vw;height:100vh;background:#0009;z-index:200;display:flex;align-items:center;justify-content:center;animation:fadeIn .3s ease-out}#reward-dialog{text-align:center;padding:24px 32px;background:linear-gradient(180deg,#e8f5e9,#c8e6c9);border-radius:20px;box-shadow:0 8px 32px #0000004d;animation:popIn .4s ease-out;max-width:90%;width:320px}#reward-title{font-size:18px;font-weight:700;color:#333;margin-bottom:12px}#reward-text{font-size:14px;color:#555;margin-bottom:20px;line-height:1.6}#reward-text strong{color:#4caf50;font-size:18px}#reward-buttons{display:flex;flex-direction:column;gap:10px}.reward-btn{background:linear-gradient(180deg,#4caf50,#388e3c)!important;color:#fff!important;box-shadow:0 4px #2e7d32!important}.reward-btn:hover{transform:translateY(-2px);box-shadow:0 6px #2e7d32!important}.reward-btn:active{transform:translateY(2px);box-shadow:0 2px #2e7d32!important}.cancel-btn{background:linear-gradient(180deg,#bdbdbd,#9e9e9e)!important;color:#333!important;box-shadow:0 4px #757575!important;font-size:12px!important;padding:8px 16px!important}#clear-text{font-size:22px;font-weight:700;color:#ff6b3c;text-shadow:1px 1px 0 white;margin-bottom:20px;white-space:pre-line;line-height:1.4}#clear-buttons{display:flex;justify-content:center;gap:12px}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes popIn{0%{transform:scale(0);opacity:0}60%{transform:scale(1.1)}80%{transform:scale(.95)}to{transform:scale(1);opacity:1}}#homepage{flex:1;display:flex;align-items:center;justify-content:center;padding:12px 16px;background:linear-gradient(180deg,#f8fbff,#e8f4fd);overflow-y:auto}.homepage-content{text-align:center;max-width:400px;animation:fadeInUp .6s ease-out}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.homepage-icon{font-size:48px;margin-bottom:8px;animation:bounce 2s ease-in-out infinite}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-6px)}}.homepage-title{font-size:24px;font-weight:700;color:#667eea;margin-bottom:6px;text-shadow:2px 2px 4px rgba(102,126,234,.2)}.homepage-description{font-size:14px;color:#555;line-height:1.5;margin-bottom:16px}.start-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 36px;border:none;border-radius:50px;background:linear-gradient(180deg,#ffd93d,#ffb800);color:#333;font-size:20px;font-weight:700;cursor:pointer;box-shadow:0 4px #cc9500,0 8px 20px #ffb8004d;transition:transform .15s,box-shadow .15s;-webkit-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent}.start-btn:hover{transform:translateY(-2px);box-shadow:0 6px #cc9500,0 10px 25px #ffb80066}.start-btn:active{transform:translateY(2px);box-shadow:0 2px #cc9500,0 4px 15px #ffb8004d}.start-btn-icon{font-size:22px}.start-btn-text{letter-spacing:.1em}.homepage-features{display:flex;flex-direction:column;gap:8px;margin-top:20px}.feature-item{display:flex;align-items:center;justify-content:center;gap:8px;padding:8px 16px;background:#fff;border-radius:10px;box-shadow:0 2px 6px #0000000f}.feature-icon{font-size:18px}.feature-text{font-size:13px;color:#555;font-weight:500}@media (min-width: 600px){#homepage{padding:20px}.homepage-icon{font-size:80px;margin-bottom:16px}.homepage-title{font-size:32px;margin-bottom:12px}.homepage-description{font-size:18px;margin-bottom:32px}.start-btn{padding:16px 48px;font-size:24px;gap:12px}.start-btn-icon{font-size:28px}.homepage-features{gap:12px;margin-top:40px}.feature-item{padding:12px 20px;gap:10px}.feature-icon{font-size:24px}.feature-text{font-size:15px}}body:has(#homepage:not(.hidden)) #menu-toggle-btn{display:none}#site-footer{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:6px 16px;flex-shrink:0;text-align:center}.footer-content{max-width:1400px;margin:0 auto}.footer-links{display:flex;justify-content:center;align-items:center;gap:8px;margin-bottom:4px;flex-wrap:wrap}.footer-links a{color:#ffffffe6;text-decoration:none;font-size:11px;transition:color .2s}.footer-links a:hover{color:#fff;text-decoration:underline}.footer-separator{color:#ffffff80;font-size:10px}.copyright{font-size:10px;color:#ffffffb3}#loading-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:#f8fbffe6;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;z-index:200}.loading-spinner{width:50px;height:50px;border:5px solid #e0e0e0;border-top-color:#667eea;border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.loading-text{font-size:16px;font-weight:700;color:#667eea}.hidden{display:none!important}@media (max-width: 599px){.logo-description,.menu-toggle-text{display:none}#menu-toggle-btn{padding:6px 10px}.logo-text{font-size:14px}.logo-icon{font-size:18px}.hint-text{display:none}.hint-btn{padding:4px 8px}}@media (min-width: 600px){.header-content{justify-content:space-between}.logo-icon{font-size:24px}.logo-text{font-size:18px}#app{max-width:98vw;padding:12px}#game-area{flex-direction:row;gap:12px;justify-content:center}.image-container{max-width:48%}#button-area{padding:10px 0}.copyright{font-size:12px}}@media (min-width: 1200px){.logo-text{font-size:20px}#status{font-size:18px;padding:8px 20px}.copyright{font-size:12px}}@media (max-height: 500px) and (orientation: landscape){#site-header{padding:3px 12px}.logo-icon{font-size:16px}.logo-text{font-size:13px}.logo-description{font-size:10px;margin-left:6px;padding-left:6px}#stage-menu-btn{padding:4px 8px;font-size:10px}.menu-icon{font-size:12px}#stage-dropdown{min-width:280px;max-height:200px}.stage-item{padding:8px 12px;font-size:12px}#app{padding:4px 8px;max-width:100%}#status{padding:3px 10px;margin-bottom:4px;font-size:11px}.hint-btn{padding:2px 6px;font-size:10px}.hint-icon{font-size:11px}.hint-text{font-size:9px}#game-area{flex-direction:row;gap:6px;margin-bottom:4px}.image-container{max-width:49%;border-radius:6px}#site-footer{display:none}#clear-dialog{padding:15px 25px;border-radius:16px}#clear-text{font-size:16px;margin-bottom:12px}.game-btn{font-size:13px;padding:8px 16px;border-radius:14px}.loading-spinner{width:35px;height:35px}.loading-text{font-size:13px}}