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auto;width:42px;height:42px;border-radius:999px;background:#e1f4ef;color:hsl(var(--primary))}.round-button.is-active{background:hsl(var(--primary));color:#fff}.meaning-block{display:grid;gap:5px}.meaning-block strong{font-size:17px}.meaning-block span{color:hsl(var(--muted-foreground));font-size:14px;line-height:1.45}.detail-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:8px}.detail-grid div,.example-block{border-radius:14px;padding:12px;background:#f8f6f2}.detail-grid small,.example-block small,.example-block span{color:hsl(var(--muted-foreground));font-size:12px}.detail-grid div{display:grid;gap:5px}.detail-grid span{font-size:14px;line-height:1.35}.example-block{display:grid;gap:6px}.example-block p{margin:0;font-size:15px;line-height:1.48}.word-card-actions{display:flex;flex-wrap:wrap;gap:8px}.chip{min-height:34px;border:1px solid hsl(var(--border));border-radius:999px;padding:0 12px;display:inline-flex;align-items:center;gap:6px;background:hsl(var(--card));color:hsl(var(--foreground));font-size:13px}.chip.is-active{border-color:hsl(var(--primary) / .42);background:#e3f2ee;color:hsl(var(--primary))}.flash-hero{margin-bottom:14px;padding:22px 18px;display:grid;gap:10px;background:linear-gradient(135deg,#def2ed,#fbf9f4)}.flash-hero>span{color:hsl(var(--primary));font-size:13px;font-weight:760}.flash-hero h2,.exam-card h2{margin:0;font-size:32px;line-height:1.05;font-weight:840}.flash-hero p,.flash-hero small{margin:0;color:hsl(var(--muted-foreground))}.flash-actions{display:flex;gap:8px;overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none;padding-top:4px}.flash-actions::-webkit-scrollbar{display:none}.flash-actions button,.primary-wide-button,.exam-reveal button{flex:0 0 auto;min-height:42px;border:0;border-radius:999px;padding:0 15px;display:inline-flex;align-items:center;justify-content:center;gap:6px;background:hsl(var(--primary));color:#fff;font-weight:760}.exam-card{padding:18px;display:grid;gap:16px}.exam-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;color:hsl(var(--muted-foreground));font-size:13px;font-weight:700}.exam-card>p{margin:0;color:hsl(var(--primary))}.answer-list{display:grid;gap:10px}.answer-list button{width:100%;min-height:50px;border:1px solid hsl(var(--border));border-radius:14px;padding:12px;background:hsl(var(--card));color:hsl(var(--foreground));text-align:left}.answer-list button.is-correct{border-color:#2fa75b;background:#dff6e8}.answer-list button.is-wrong{border-color:hsl(var(--destructive));background:#fae8e5}.exam-reveal{display:grid;gap:12px;border-radius:14px;padding:12px;background:#f8f6f2}.exam-reveal p{margin:0;line-height:1.45}.primary-wide-button{width:100%}.bottom-action-bar{flex:0 0 auto;min-height:calc(82px + env(safe-area-inset-bottom));padding:12px 16px calc(12px + env(safe-area-inset-bottom));display:flex;align-items:center;justify-content:space-between;gap:12px;border-top:1px solid hsl(var(--border) / .82);background:#fbfbf8f2;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);box-shadow:0 -12px 30px #1e252f14;z-index:6}.bottom-now{flex:1 1 auto;display:grid;gap:3px}.bottom-now strong{font-size:16px}.bottom-now span{color:hsl(var(--muted-foreground));font-size:12px;line-height:1.25;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.bottom-controls{flex:0 0 auto;display:flex;align-items:center;gap:7px}.bottom-controls button{width:40px;height:40px;border-radius:999px;background:hsl(var(--muted))}.bottom-controls .play-main{width:50px;height:50px;background:hsl(var(--primary));color:#fff}.bottom-controls button.is-active{color:hsl(var(--primary));background:#dff1ec}.batch-item:active,.mode-button:active,.word-card:active,.chip:active,.round-button:active,.flash-actions button:active,.answer-list button:active,.bottom-controls button:active,.icon-action:active{transform:scale(.97)}@media(min-width:560px){.mobile-app{border-inline:1px solid hsl(var(--border) / .7)}.detail-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.batch-item{width:248px}}@media(max-width:360px){.top-bar h1{font-size:16px}.mode-grid{grid-template-columns:1fr}.bottom-action-bar{align-items:stretch;flex-direction:column}.bottom-controls{justify-content:space-between}}.file\:border-0::file-selector-button{border-width:0px}.file\:bg-transparent::file-selector-button{background-color:transparent}.file\:text-sm::file-selector-button{font-size:.875rem;line-height:1.25rem}.file\:font-medium::file-selector-button{font-weight:500}.placeholder\:text-muted-foreground::-moz-placeholder{color:hsl(var(--muted-foreground))}.placeholder\:text-muted-foreground::placeholder{color:hsl(var(--muted-foreground))}.hover\:border-border\/80:hover{border-color:hsl(var(--border) / .8)}.hover\:border-primary\/50:hover{border-color:hsl(var(--primary) / .5)}.hover\:bg-accent:hover{background-color:hsl(var(--accent))}.hover\:bg-destructive\/90:hover{background-color:hsl(var(--destructive) / .9)}.hover\:bg-primary\/90:hover{background-color:hsl(var(--primary) / .9)}.hover\:bg-secondary\/80:hover{background-color:hsl(var(--secondary) / .8)}.hover\:bg-sidebar-accent\/60:hover{background-color:hsl(var(--sidebar-accent) / .6)}.hover\:text-accent-foreground:hover{color:hsl(var(--accent-foreground))}.hover\:text-foreground:hover{color:hsl(var(--foreground))}.hover\:text-sidebar-foreground:hover{color:hsl(var(--sidebar-foreground))}.focus\:outline-none:focus{outline:2px solid transparent;outline-offset:2px}.focus\:ring-2:focus{--tw-ring-offset-shadow: var(--tw-ring-inset) 0 0 0 var(--tw-ring-offset-width) var(--tw-ring-offset-color);--tw-ring-shadow: var(--tw-ring-inset) 0 0 0 calc(2px + var(--tw-ring-offset-width)) var(--tw-ring-color);box-shadow:var(--tw-ring-offset-shadow),var(--tw-ring-shadow),var(--tw-shadow, 0 0 #0000)}.focus\:ring-ring:focus{--tw-ring-color: hsl(var(--ring))}.focus-visible\:outline-none:focus-visible{outline:2px solid transparent;outline-offset:2px}.focus-visible\:ring-2:focus-visible{--tw-ring-offset-shadow: var(--tw-ring-inset) 0 0 0 var(--tw-ring-offset-width) var(--tw-ring-offset-color);--tw-ring-shadow: var(--tw-ring-inset) 0 0 0 calc(2px + var(--tw-ring-offset-width)) var(--tw-ring-color);box-shadow:var(--tw-ring-offset-shadow),var(--tw-ring-shadow),var(--tw-shadow, 0 0 #0000)}.focus-visible\:ring-ring:focus-visible{--tw-ring-color: hsl(var(--ring))}.disabled\:pointer-events-none:disabled{pointer-events:none}.disabled\:cursor-not-allowed:disabled{cursor:not-allowed}.disabled\:opacity-50:disabled{opacity:.5}.data-\[state\=active\]\:bg-background[data-state=active]{background-color:hsl(var(--background))}.data-\[state\=active\]\:text-foreground[data-state=active]{color:hsl(var(--foreground))}.data-\[state\=active\]\:shadow-sm[data-state=active]{--tw-shadow: 0 1px 2px 0 rgb(0 0 0 / .05);--tw-shadow-colored: 0 1px 2px 0 var(--tw-shadow-color);box-shadow:var(--tw-ring-offset-shadow, 0 0 #0000),var(--tw-ring-shadow, 0 0 #0000),var(--tw-shadow)}@media(min-width:640px){.sm\:block{display:block}.sm\:grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.sm\:grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.sm\:gap-3{gap:.75rem}.sm\:text-sm{font-size:.875rem;line-height:1.25rem}}@media(min-width:768px){.md\:grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.md\:grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.md\:px-5{padding-left:1.25rem;padding-right:1.25rem}.md\:px-6{padding-left:1.5rem;padding-right:1.5rem}.md\:px-8{padding-left:2rem;padding-right:2rem}.md\:py-4{padding-top:1rem;padding-bottom:1rem}}@media(min-width:1024px){.lg\:mb-6{margin-bottom:1.5rem}.lg\:block{display:block}.lg\:flex{display:flex}.lg\:h-full{height:100%}.lg\:min-h-0{min-height:0px}.lg\:w-52{width:13rem}.lg\:w-72{width:18rem}.lg\:w-auto{width:auto}.lg\:flex-1{flex:1 1 0%}.lg\:flex-none{flex:none}.lg\:grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.lg\:grid-cols-\[1fr_280px\]{grid-template-columns:1fr 280px}.lg\:flex-row{flex-direction:row}.lg\:flex-col{flex-direction:column}.lg\:items-center{align-items:center}.lg\:justify-start{justify-content:flex-start}.lg\:justify-between{justify-content:space-between}.lg\:gap-1{gap:.25rem}.lg\:gap-4{gap:1rem}.lg\:gap-6{gap:1.5rem}.lg\:overflow-y-auto{overflow-y:auto}.lg\:border-b-0{border-bottom-width:0px}.lg\:border-r{border-right-width:1px}.lg\:px-4{padding-left:1rem;padding-right:1rem}.lg\:py-2\.5{padding-top:.625rem;padding-bottom:.625rem}.lg\:py-4{padding-top:1rem;padding-bottom:1rem}.lg\:py-5{padding-top:1.25rem;padding-bottom:1.25rem}}@media(min-width:1280px){.xl\:grid-cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}}