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li{display:flex;gap:clamp(10px,1.5vw,12px);align-items:flex-start;background:var(--surface-soft);padding:clamp(12px,2vw,16px);border-radius:10px;border:1px solid var(--border-light);box-shadow:var(--shadow-sm)}.preposition-list .pill{flex-shrink:0;margin:0}.preposition-list .meaning-ko{flex:1;margin:0;white-space:pre-line}.meaning-stack{display:grid;gap:clamp(16px,2vw,20px);width:100%;max-width:100%;overflow:hidden;box-sizing:border-box}.meaning-column{margin-bottom:clamp(12px,2vw,16px)}@media (max-width: 640px){.lex-topbar{flex-direction:column;align-items:flex-start}.top-actions{width:100%;justify-content:space-between}.settings-panel{width:100vw}.pagination-bar,.chunk-bar{flex-direction:column;align-items:stretch}.pagination-actions,.chunk-actions{width:100%;justify-content:space-between;flex-wrap:wrap}}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--surface-soft);border-radius:4px}::-webkit-scrollbar-thumb{background:var(--surface);border-radius:4px;border:2px solid var(--surface-soft)}::-webkit-scrollbar-thumb:hover{background:var(--accent)}.practice-section{margin-top:clamp(20px,3vw,32px)}.practice-header{margin-bottom:clamp(24px,4vw,32px)}.practice-header-content{display:flex;justify-content:space-between;align-items:flex-start;gap:clamp(16px,2.5vw,24px);flex-wrap:wrap}.practice-desc{color:var(--text-soft);font-size:calc(clamp(14px,1.8vw,16px) * var(--font-scale));margin-top:8px}.practice-range{color:var(--text-muted);font-size:calc(clamp(13px,1.5vw,15px) * var(--font-scale));margin-top:6px}.shuffle-button{display:flex;align-items:center;gap:8px;padding:clamp(10px,1.5vw,12px) clamp(16px,2vw,20px);background:linear-gradient(135deg,var(--color-primary),var(--color-secondary));color:#fff;border:none;border-radius:12px;font-weight:700;font-size:calc(clamp(14px,1.8vw,16px) * var(--font-scale));cursor:pointer;transition:all .25s cubic-bezier(.4,0,.2,1);box-shadow:0 4px 12px #6366f14d}.shuffle-button:hover{transform:translateY(-2px);box-shadow:0 6px 20px #6366f166}.shuffle-button:active{transform:translateY(0)}.shuffle-icon{font-size:calc(18px * var(--font-scale))}.practice-empty-state{text-align:center;padding:clamp(40px,6vw,60px) 20px;background:var(--surface-soft);border-radius:16px;border:1px dashed var(--border)}.empty-icon{font-size:calc(48px * var(--font-scale));margin-bottom:16px}.empty-message{color:var(--text-muted);font-size:calc(clamp(15px,2vw,17px) * var(--font-scale))}.practice-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,400px),1fr));gap:clamp(20px,3vw,24px)}.practice-card{background:var(--surface);border:1px solid var(--border);border-radius:20px;padding:clamp(20px,3vw,24px);box-shadow:var(--shadow-md);transition:all .3s cubic-bezier(.4,0,.2,1);display:flex;flex-direction:column;position:relative;overflow:hidden}.practice-card:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--color-primary),var(--color-secondary),var(--color-accent));opacity:0;transition:opacity .3s ease}.practice-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-xl);border-color:var(--color-primary)}.practice-card:hover:before{opacity:1}.practice-card.revealed{border-color:var(--color-success);background:linear-gradient(180deg,var(--surface),var(--surface-soft))}.practice-card.revealed:before{background:linear-gradient(90deg,var(--color-success),var(--color-primary));opacity:1}.practice-card-header{margin-bottom:clamp(16px,2vw,20px);padding-bottom:clamp(12px,1.5vw,16px);border-bottom:2px solid var(--border-light);display:flex;align-items:flex-start;justify-content:space-between}.practice-header-left{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.practice-card-dismiss{border:none;background:#0f172a0a;color:var(--text-muted);width:28px;height:28px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;font-size:calc(14px * var(--font-scale));cursor:pointer;box-shadow:var(--shadow-xs);transition:all .2s ease}.practice-card-dismiss:hover{background:#f871711f;color:#b91c1c;transform:translateY(-1px);box-shadow:var(--shadow-sm)}.practice-card-dismiss:active{transform:translateY(0);box-shadow:var(--shadow-xs)}.practice-type-badge{background:linear-gradient(135deg,var(--color-primary),var(--color-secondary));color:#fff;padding:6px 14px;border-radius:20px;font-size:calc(clamp(12px,1.5vw,14px) * var(--font-scale));font-weight:700;box-shadow:0 2px 8px #6366f14d}.practice-word{font-size:calc(clamp(20px,3vw,28px) * var(--font-scale));font-weight:800;background:linear-gradient(135deg,var(--color-primary),var(--color-secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;letter-spacing:-.02em}.practice-word.hidden{color:var(--text-muted);-webkit-text-fill-color:var(--text-muted);background:none;font-family:monospace;letter-spacing:2px}.practice-card-body{display:flex;flex-direction:column;gap:clamp(14px,2vw,18px);flex:1}.practice-note{display:flex;align-items:flex-start;gap:8px;padding:12px 16px;background:#6366f114;border-left:3px solid var(--color-primary);border-radius:8px;font-size:calc(clamp(13px,1.6vw,15px) * var(--font-scale));color:var(--text-default)}.note-icon{font-size:calc(16px * var(--font-scale));flex-shrink:0}.practice-prompt-wrapper{padding:clamp(16px,2vw,20px);background:var(--surface-soft);border-radius:12px;border:1px solid var(--border-light)}.practice-prompt{font-size:calc(clamp(16px,2.2vw,18px) * var(--font-scale));line-height:1.7;color:var(--text-strong);font-weight:600;margin:0;word-break:break-word}.practice-choices-wrapper{margin-top:4px}.choices-label{font-size:calc(clamp(13px,1.6vw,15px) * var(--font-scale));font-weight:700;color:var(--text-muted);margin-bottom:12px;text-transform:uppercase;letter-spacing:.5px}.practice-choices{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}.practice-choice-item{display:flex;align-items:center;gap:12px;padding:clamp(12px,1.5vw,16px);background:var(--surface-strong);border:2px solid var(--border-light);border-radius:12px;transition:all .2s ease;cursor:default}.practice-choice-item:hover{border-color:var(--color-primary);background:#6366f10d;transform:translate(4px)}.choice-letter{display:flex;align-items:center;justify-content:center;width:32px;height:32px;background:linear-gradient(135deg,var(--color-primary),var(--color-secondary));color:#fff;border-radius:8px;font-weight:800;font-size:calc(14px * var(--font-scale));flex-shrink:0;box-shadow:0 2px 6px #6366f14d}.choice-text{flex:1;font-size:calc(clamp(14px,1.8vw,16px) * var(--font-scale));color:var(--text-default);line-height:1.6}.practice-hint{display:flex;align-items:flex-start;gap:8px;padding:12px 16px;background:#ec489914;border-left:3px solid var(--color-accent);border-radius:8px;font-size:calc(clamp(13px,1.6vw,15px) * var(--font-scale));color:var(--text-default)}.hint-icon{font-size:calc(16px * var(--font-scale));flex-shrink:0}.practice-answer-wrapper{margin-top:auto;padding-top:clamp(16px,2vw,20px);border-top:2px solid var(--border-light)}.practice-answer-wrapper.revealed{border-top-color:var(--color-success)}.answer-label{font-size:calc(clamp(13px,1.6vw,15px) * var(--font-scale));font-weight:700;color:var(--text-muted);margin-bottom:12px;text-transform:uppercase;letter-spacing:.5px}.practice-card-footer{margin-top:clamp(16px,2vw,20px);padding-top:clamp(16px,2vw,20px);border-top:2px solid var(--border-light)}.reveal-button{width:100%;padding:clamp(14px,2vw,16px);background:linear-gradient(135deg,var(--color-primary),var(--color-secondary));color:#fff;border:none;border-radius:12px;font-weight:700;font-size:calc(clamp(15px,2vw,17px) * var(--font-scale));cursor:pointer;transition:all .25s cubic-bezier(.4,0,.2,1);box-shadow:0 4px 12px #6366f14d;display:flex;align-items:center;justify-content:center;gap:8px}.reveal-button:hover{transform:translateY(-2px);box-shadow:0 6px 20px #6366f166}.reveal-button:active{transform:translateY(0)}.reveal-icon{font-size:calc(18px * var(--font-scale))}.choice.answer{display:inline-block;padding:clamp(12px,1.5vw,16px) clamp(20px,2.5vw,24px);background:linear-gradient(135deg,var(--color-success),#10b981);color:#fff;border-radius:12px;font-weight:700;font-size:calc(clamp(15px,2vw,17px) * var(--font-scale));box-shadow:0 4px 12px #10b9814d;border:none;width:100%;text-align:center}.quiz-answer{display:inline-block;padding:clamp(12px,1.5vw,16px) clamp(20px,2.5vw,24px);background:var(--surface-strong);border:2px solid var(--border);border-radius:12px;font-weight:600;font-size:calc(clamp(15px,2vw,17px) * var(--font-scale));color:var(--text-default);cursor:pointer;transition:all .2s ease;width:100%;text-align:center}.quiz-answer.blurred{filter:blur(var(--blur-amount, 8px));-webkit-user-select:none;user-select:none;pointer-events:auto}.quiz-answer.blurred:hover{filter:blur(calc(var(--blur-amount, 8px) * .7))}.quiz-answer.revealed{background:linear-gradient(135deg,var(--color-success),#10b981);color:#fff;border-color:var(--color-success);box-shadow:0 4px 12px #10b9814d;filter:none}.quiz-answer.masked{background:var(--surface-soft);color:transparent;text-shadow:0 0 8px var(--text-muted);-webkit-user-select:none;user-select:none}@media (max-width: 768px){.practice-grid{grid-template-columns:1fr}.practice-header-content{flex-direction:column}.shuffle-button{width:100%;justify-content:center}}*{margin:0;padding:0;box-sizing:border-box}html,body,#root{width:100%;height:100%}body{background-color:#0f1b2d;color:#fff;font-family:Pretendard,Noto Sans KR,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}canvas{display:block;width:100%;height:100%}