:root{--timer-color:#ffdd00;--low-time-color:#ff0e42;--background-color:#0b3457}.confetti-wrapper{z-index:7;position:fixed;left:0;top:0;width:100%;height:100%;display:flex;flex-direction:column;justify-content:center;align-items:center;background:0 0;pointer-events:none;visibility:hidden;opacity:0}.confetti-wrapper.active{visibility:visible;opacity:1}.confetti-container{position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none}section{padding-top:15px;display:flex;justify-content:center;align-items:center}#app-wrapper{display:flex;justify-content:center;position:relative;width:100%;height:100%;padding:10px;border-radius:20px 20px 0 0;box-shadow:0 0 3px rgba(0,0,0,.2);border:5px solid var(--site-color-1);overflow-x:hidden;overflow-y:scroll;-ms-overflow-style:none;scrollbar-width:none}#app-wrapper::-webkit-scrollbar{display:none}#app-intro{z-index:4;position:absolute;top:0;left:0;width:100%;height:100%;display:flex;flex-direction:column;justify-content:center;align-items:center;padding:20px;font-weight:700;background:#fff;overflow-y:scroll;-ms-overflow-style:none;scrollbar-width:none}#app-intro::-webkit-scrollbar{display:none}#app-notice{display:flex;justify-content:center;align-items:center;width:100%;margin-bottom:20px}#app-notice ul{margin-left:20px;padding-right:20px}#app-notice ul li{margin:14px 0;list-style:circle;font-size:20px;word-break:keep-all}.heart-icon{color:#e0105a}#start-button{display:flex;justify-content:center;align-items:center;padding:20px 40px;font-size:1.3rem;font-weight:700;background:#fff;border-radius:20px;border:3px solid var(--site-color-1);cursor:pointer}@media (hover:hover){#start-button:hover{background:var(--site-color-1)}}#app-container{z-index:3;position:absolute;left:0;top:0;width:100%;height:100%;display:flex;flex-direction:column;justify-content:flex-start;align-items:center;background:0 0;overflow-y:scroll;-ms-overflow-style:none;scrollbar-width:none;overflow:hidden}#app-container::-webkit-scrollbar{display:none}#stage-text{flex-shrink:0;font-size:22px;font-weight:700;color:var(--background-color);text-align:center;padding:10px 0 0}#quiz-info{flex-shrink:0;display:flex;flex-direction:column;align-items:center;width:100%;padding:4px 10px 0}#quiz-status-bar{display:grid;grid-template-columns:1fr 1fr 1fr;align-items:center;width:100%;padding-bottom:6px}#hearts-display{justify-self:start;font-size:24px;font-weight:700;padding:4px 8px;color:#e0105a}#score-text{justify-self:center;color:var(--background-color);font-size:24px;font-weight:700;letter-spacing:1px}#combo-text{justify-self:end;color:#ea580c;font-size:22px;font-weight:700;padding:0 8px;min-height:1.3em;opacity:0}#combo-text.show{animation:.7s forwards comboAnim}@keyframes comboAnim{0%{opacity:0;transform:scale(.8)}20%{opacity:1;transform:scale(1.1)}60%{opacity:1;transform:scale(1)}100%{opacity:0;transform:scale(1)}}#timer-wrapper{display:flex;justify-content:center;align-items:center;width:95%;height:20px;border-radius:15px;box-shadow:0 0 2px rgba(0,0,0,.2);background:#fff;overflow:hidden;margin-bottom:8px}#timer-container{position:relative;width:95%;height:90%}#timer-bar{position:absolute;top:50%;left:0;height:70%;transform:translateY(-50%);width:100%;border-radius:15px;box-shadow:inset 0 0 8px rgba(0,0,0,.2);background:var(--timer-color)}#timer-bar.start{animation:timerStart var(--quiz-time) linear forwards}@keyframes timerStart{to{width:0}}#timer-bar.low-time{background:var(--low-time-color)}#level-down-overlay{display:none;position:fixed;inset:0;z-index:100;justify-content:center;align-items:center;background:rgba(0,0,0,.5)}#level-down-overlay.show{display:flex}#level-down-box{background:#fff;border-radius:16px;padding:10px;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:28px;border:3px solid var(--site-color-1);width:90%;max-width:300px;height:300px}#level-down-title{font-size:1.8rem;font-weight:700;letter-spacing:3px;text-align:center;word-break:keep-all}#level-down-confirm{padding:12px 36px;font-size:1.1rem;border:2px solid var(--site-color-1);border-radius:12px;background:#fff}#quiz-question{flex-shrink:0;display:flex;flex-direction:column;align-items:center;width:100%;padding:10px 15px 6px;gap:12px}#word-meaning{padding:0 10px;font-size:22px;font-weight:700;color:#161515;text-align:center;word-break:keep-all;line-height:1.4}#word-slots{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}.word-slot{width:60px;height:60px;border:3px solid var(--site-color-1);border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:30px;font-weight:700;color:#0b3457;background:#fff;transition:background .15s,border-color .15s}.word-slot.filled{background:var(--site-color-2)}.word-slot.correct{border-color:#16a34a;background:#4ade80;animation:.35s correctPulse}.word-slot.incorrect{border-color:#dc2626;background:#fca5a5}@keyframes correctPulse{0%{transform:scale(.95)}50%{transform:scale(1.08)}100%{transform:scale(1)}}#hanja-choices{flex-shrink:0;display:grid;grid-template-columns:repeat(3,1fr);gap:8px;width:100%;padding:6px 20px 0}.hanja-btn{display:flex;flex-direction:column;align-items:center;gap:5px;padding:10px 4px 8px;border:3px solid var(--site-color-1);border-radius:12px;background:#fff;cursor:pointer;transition:transform .12s,background .12s,box-shadow .12s}@media (hover:hover){#level-down-confirm:hover{background:var(--site-color-1)}.hanja-btn:hover:not(:disabled){background:var(--site-color-1);transform:translateY(-2px);box-shadow:0 6px 14px rgba(168,237,212,.7)}#delete-btn:hover{background:#fecaca;border-color:#f87171}}.hanja-btn:active:not(:disabled){transform:scale(.95)}.hanja-btn.used{opacity:.25;cursor:default}.hanja-btn .hanja-char{font-size:45px;font-weight:700;color:#0b3457;line-height:1}.hanja-btn.correct-highlight{background:#4ade80;border-color:#16a34a}.hanja-btn.dimmed{opacity:.25}.hanja-btn .hanja-meaning-text{font-size:20px;color:#555;text-align:center;word-break:keep-all;line-height:1.2}.hanja-btn .hanja-sound-text{font-size:20px;font-weight:700;color:#0b3457;text-align:center}#delete-btn{flex-shrink:0;margin:8px 20px 10px;width:calc(100% - 40px);padding:12px;border-radius:12px;background:#fee2e2;border:2px solid #fca5a5;font-size:1.1rem;font-weight:700;color:#dc2626;cursor:pointer;transition:background .12s,border-color .12s}#delete-btn:active{transform:scale(.97)}#app-result{position:absolute;top:0;left:0;width:100%;height:100%;z-index:5;display:none;justify-content:center;align-items:center;background:var(--background-color);border-radius:15px}#app-result.show{display:flex}#result-box{display:flex;flex-direction:column;align-items:center;gap:20px;width:90%;max-width:400px}#result-title{font-size:2.2rem;font-weight:700;color:#fff;text-align:center}#result-rows{display:flex;flex-direction:column;gap:10px;width:100%}.result-row{display:flex;justify-content:space-between;align-items:center;background:#fff;border-radius:10px;padding:12px 16px;font-size:24px}.result-row span:last-child{font-weight:700;color:#34a7ff}#result-buttons{display:flex;gap:12px}#app-result .item-link,#result-retry-button{padding:14px 20px;background:var(--site-color-1);border-radius:12px;font-size:22px;min-width:130px;font-weight:700;color:#333!important;cursor:pointer;text-align:center}#milestone-overlay{display:none;position:absolute;inset:0;background:rgba(0,0,0,.65);z-index:20;align-items:center;justify-content:center}#milestone-overlay.show{display:flex}#milestone-box{background:#fff;border-radius:24px;padding:40px 35px;text-align:center;box-shadow:0 20px 60px rgba(0,0,0,.3);animation:.25s modalIn}@keyframes modalIn{from{transform:scale(.8);opacity:0}to{transform:scale(1);opacity:1}}#milestone-emoji{font-size:4rem;margin-bottom:10px}#milestone-title{font-size:2rem;font-weight:900;color:#0b3457;margin-bottom:24px}#milestone-confirm{padding:14px 44px;border-radius:14px;background:var(--site-color-1);font-size:1.2rem;font-weight:700;color:#065f46;cursor:pointer;transition:background .15s}@media (hover:hover){#app-result .item-link:hover,#result-retry-button:hover{opacity:.85}#milestone-confirm:hover{background:#6ee7b7}}@media screen and (max-width:450px){#app-notice ul li{margin:10px 0;font-size:18px}#word-meaning{font-size:20px}.word-slot{width:50px;height:50px}#hanja-choices{gap:6px;padding:6px 12px 0}.hanja-btn{padding:8px 4px 6px}.hanja-btn .hanja-char{font-size:30px}#delete-btn{margin:6px 12px 8px;width:calc(100% - 24px);padding:10px;font-size:1rem}}