@supports ((-webkit-hyphens:none) and (not (margin-trim:inline))) or ((-moz-orient:inline) and (not (color:rgb(from red r g b)))){*,::backdrop,:after,:before{--un-bg-opacity:100%;--un-border-opacity:100%;--un-ease:initial;--un-leading:initial;--un-space-y-reverse:initial;--un-translate-x:initial;--un-translate-y:initial;--un-translate-z:initial}}@property --un-leading{syntax:"*";inherits:false}@property --un-outline-style{syntax:"*";inherits:false;initial-value:solid}@property --un-border-opacity{syntax:"<percentage>";inherits:false;initial-value:100%}@property --un-bg-opacity{syntax:"<percentage>";inherits:false;initial-value:100%}@property --un-translate-x{syntax:"*";inherits:false;initial-value:0}@property --un-translate-y{syntax:"*";inherits:false;initial-value:0}@property --un-translate-z{syntax:"*";inherits:false;initial-value:0}@property --un-ease{syntax:"*";inherits:false}@property --un-backdrop-blur{syntax:"*";inherits:false}@property --un-backdrop-brightness{syntax:"*";inherits:false}@property --un-backdrop-contrast{syntax:"*";inherits:false}@property --un-backdrop-grayscale{syntax:"*";inherits:false}@property --un-backdrop-hue-rotate{syntax:"*";inherits:false}@property --un-backdrop-invert{syntax:"*";inherits:false}@property --un-backdrop-opacity{syntax:"*";inherits:false}@property --un-backdrop-saturate{syntax:"*";inherits:false}@property --un-backdrop-sepia{syntax:"*";inherits:false}@property --un-numeric-figure{syntax:"*";inherits:false}@property --un-numeric-fraction{syntax:"*";inherits:false}@property --un-numeric-spacing{syntax:"*";inherits:false}@property --un-ordinal{syntax:"*";inherits:false}@property --un-slashed-zero{syntax:"*";inherits:false}@property --un-space-y-reverse{syntax:"*";inherits:false;initial-value:0}:host,:root{--default-transition-timingFunction:cubic-bezier(0.4,0,0.2,1);--default-transition-duration:150ms;--ease-DEFAULT:cubic-bezier(0.4,0,0.2,1);--font-sans:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji";--font-mono:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;--default-font-family:var(--font-sans);--default-monoFont-family:var(--font-mono);--spacing:0.25rem;--radius-lg:0.5rem;--radius-2xl:1rem;--radius-xl:0.75rem;--container-sm:24rem;--leading-none:1;--fontWeight-semibold:600;--fontWeight-medium:500;--text-base-fontSize:1rem;--text-base-lineHeight:1.5rem}*,::backdrop,::file-selector-button,:after,:before{box-sizing:border-box;margin:0;padding:0;border:0 solid}:host,html{line-height:1.5;-webkit-text-size-adjust:100%;tab-size:4;font-family:var( --default-font-family,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue","Noto Sans",Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji" );font-feature-settings:var(--default-font-featureSettings,normal);font-variation-settings:var(--default-font-variationSettings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,pre,samp{font-family:var( --default-monoFont-family,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace );font-feature-settings:var(--default-monoFont-featureSettings,normal);font-variation-settings:var(--default-monoFont-variationSettings,normal);font-size:1em}small{font-size:80%}sub,sup{font-size:75%;line-height:0;position:relative;vertical-align:baseline}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}:-moz-focusring:where(:not(iframe)){outline:auto}progress{vertical-align:baseline}summary{display:list-item}menu,ol,ul{list-style:none}audio,canvas,embed,iframe,img,object,svg,video{display:block;vertical-align:middle}img,video{max-width:100%;height:auto}::file-selector-button,button,input,optgroup,select,textarea{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;border-radius:0;background-color:transparent;opacity:1}:where(select:is([multiple],[size])) optgroup{font-weight:bolder}:where(select:is([multiple],[size])) optgroup option{padding-inline-start:20px}::file-selector-button{margin-inline-end:4px}::placeholder{opacity:1}@supports (not (-webkit-appearance:-apple-pay-button)) or (contain-intrinsic-size:1px){::placeholder{color:color-mix(in oklab,currentcolor 50%,transparent)}}textarea{resize:vertical}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-date-and-time-value{min-height:1lh;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-datetime-edit,::-webkit-datetime-edit-day-field,::-webkit-datetime-edit-hour-field,::-webkit-datetime-edit-meridiem-field,::-webkit-datetime-edit-millisecond-field,::-webkit-datetime-edit-minute-field,::-webkit-datetime-edit-month-field,::-webkit-datetime-edit-second-field,::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}::file-selector-button,button,input:where([type=button],[type=reset],[type=submit]){appearance:button}::-webkit-inner-spin-button,::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden~=until-found])){display:none!important}.text-base{font-size:var(--text-base-fontSize);line-height:var(--un-leading,var(--text-base-lineHeight))}.text-inherit{color:inherit}.leading-6{--un-leading:calc(var(--spacing) * 6);line-height:calc(var(--spacing) * 6)}.leading-none{--un-leading:var(--leading-none);line-height:var(--leading-none)}.tracking-\[0\.18em\]{--un-tracking:0.18em;letter-spacing:.18em}.font-medium{--un-font-weight:var(--fontWeight-medium);font-weight:var(--fontWeight-medium)}.font-mono{font-family:var(--font-mono)}.font-semibold{--un-font-weight:var(--fontWeight-semibold);font-weight:var(--fontWeight-semibold)}.tab{-moz-tab-size:4;-o-tab-size:4;tab-size:4}.mx-1{margin-inline:calc(var(--spacing) * 1)}.ml-1{margin-left:calc(var(--spacing) * 1)}.ml-auto{margin-left:auto}.ms{margin-inline-start:calc(var(--spacing) * 4)}.px,.px-4{padding-inline:calc(var(--spacing) * 4)}.px-1{padding-inline:calc(var(--spacing) * 1)}.px-2{padding-inline:calc(var(--spacing) * 2)}.px-3{padding-inline:calc(var(--spacing) * 3)}.pb-\[env\(safe-area-inset-bottom\)\]{padding-bottom:env(safe-area-inset-bottom)}.pb-\[max\(1rem\,env\(safe-area-inset-bottom\)\)\]{padding-bottom:max(1rem,env(safe-area-inset-bottom))}.pb-3{padding-bottom:calc(var(--spacing) * 3)}.pt-0{padding-top:calc(var(--spacing) * 0)}.pt-1{padding-top:calc(var(--spacing) * 1)}.pt-2{padding-top:calc(var(--spacing) * 2)}.text-center{text-align:center}.text-right{text-align:right}.outline{outline-style:var(--un-outline-style);outline-width:1px}.outline-none{--un-outline-style:none;outline-style:none}.b,.border{border-width:1px}.border-b{border-bottom-width:1px}.border-t{border-top-width:1px}.border-\[var\(--gray-a3\)\]{border-color:color-mix(in oklab,var(--gray-a3) var(--un-border-opacity),transparent)}.border-\[var\(--gray-a4\)\]{border-color:color-mix(in oklab,var(--gray-a4) var(--un-border-opacity),transparent)}.border-b-2{border-bottom-width:2px}.rounded-2xl{border-radius:var(--radius-2xl)}.rounded-full{border-radius:calc(infinity * 1px)}.rounded-lg{border-radius:var(--radius-lg)}.rounded-xl{border-radius:var(--radius-xl)}.border-dashed{--un-border-style:dashed;border-style:dashed}.bg-\[var\(--gray-a2\)\]{background-color:color-mix(in oklab,var(--gray-a2) var(--un-bg-opacity),transparent)}.bg-\[var\(--gray-a3\)\]{background-color:color-mix(in oklab,var(--gray-a3) var(--un-bg-opacity),transparent)}.bg-transparent{background-color:transparent}.hover\:bg-\[var\(--gray-a3\)\]:hover{background-color:color-mix(in oklab,var(--gray-a3) var(--un-bg-opacity),transparent)}.opacity-0{opacity:0}.no-underline{text-decoration:none}.flex{display:flex}.inline-flex{display:inline-flex}.flex-1{flex:1 1 0%}.flex-shrink{flex-shrink:1}.shrink-0{flex-shrink:0}.flex-wrap{flex-wrap:wrap}.gap-2{gap:calc(var(--spacing) * 2)}.gap-3{gap:calc(var(--spacing) * 3)}.gap-4{gap:calc(var(--spacing) * 4)}.grid{display:grid}.auto-cols-fr{grid-auto-columns:minmax(0,1fr)}.grid-flow-col{grid-auto-flow:column}.grid-cols-1{grid-template-columns:repeat(1,minmax(0,1fr))}.size-12{width:calc(var(--spacing) * 12);height:calc(var(--spacing) * 12)}.size-8{width:calc(var(--spacing) * 8);height:calc(var(--spacing) * 8)}.h-\[1\.1em\]{height:1.1em}.h-10{height:calc(var(--spacing) * 10)}.h-12{height:calc(var(--spacing) * 12)}.h-5{height:calc(var(--spacing) * 5)}.h-96{height:calc(var(--spacing) * 96)}.h-full{height:100%}.h1{height:calc(var(--spacing) * 1)}.h2{height:calc(var(--spacing) * 2)}.h3{height:calc(var(--spacing) * 3)}.max-w-full{max-width:100%}.max-w-sm{max-width:var(--container-sm)}.min-h-10{min-height:calc(var(--spacing) * 10)}.min-h-12{min-height:calc(var(--spacing) * 12)}.min-w-0{min-width:calc(var(--spacing) * 0)}.min-w-16{min-width:calc(var(--spacing) * 16)}.w-\[0\.55em\]{width:.55em}.w-\[0\.72em\]{width:.72em}.w-\[2px\]{width:2px}.w-10{width:calc(var(--spacing) * 10)}.w-2\.5{width:calc(var(--spacing) * 2.5)}.w-28{width:calc(var(--spacing) * 28)}.w-full{width:100%}.w-px{width:1px}.block{display:block}.hidden{display:none}.cursor-pointer{cursor:pointer}.cursor-text{cursor:text}.select-none{-webkit-user-select:none;user-select:none}.whitespace-nowrap{white-space:nowrap}.break-words{overflow-wrap:break-word}.truncate{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.italic{font-style:italic}.not-italic{font-style:normal}.antialiased{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.-translate-x-1\/2{--un-translate-x:-50%}.-translate-x-1\/2,.-translate-y-1\/2{translate:var(--un-translate-x) var(--un-translate-y)}.-translate-y-1\/2{--un-translate-y:-50%}.transform{transform:var(--un-rotate-x) var(--un-rotate-y) var(--un-rotate-z) var(--un-skew-x) var(--un-skew-y)}.transition{transition-property:color,background-color,border-color,text-decoration-color,fill,stroke,--un-gradient-from,--un-gradient-via,--un-gradient-to,opacity,box-shadow,transform,translate,scale,rotate,filter,-webkit-backdrop-filter,backdrop-filter;transition-timing-function:var(--un-ease,var(--default-transition-timingFunction));transition-duration:var(--un-duration,var(--default-transition-duration))}.transition-colors{transition-property:color,background-color,border-color,text-decoration-color,fill,stroke,--un-gradient-from,--un-gradient-via,--un-gradient-to;transition-timing-function:var(--un-ease,var(--default-transition-timingFunction));transition-duration:var(--un-duration,var(--default-transition-duration))}.ease{--un-ease:var(--ease-DEFAULT);transition-timing-function:var(--ease-DEFAULT)}.items-end{align-items:flex-end}.items-center{align-items:center}.inset-0{inset:calc(var(--spacing) * 0)}.left-1\/2{left:50%}.top-0{top:calc(var(--spacing) * 0)}.top-1\/2{top:50%}.justify-center{justify-content:center}.absolute{position:absolute}.fixed{position:fixed}.relative{position:relative}.sticky{position:sticky}.z-40{z-index:40}.z-50{z-index:50}.overflow-y-auto{overflow-y:auto}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.animate-pulse{animation:pulse 2s cubic-bezier(.4,0,.6,1) infinite}.min-h-dvh{min-height:100dvh}.backdrop-blur-md{--un-backdrop-blur:blur(12px);-webkit-backdrop-filter:var(--un-backdrop-blur,) var(--un-backdrop-brightness,) var(--un-backdrop-contrast,) var(--un-backdrop-grayscale,) var(--un-backdrop-hue-rotate,) var(--un-backdrop-invert,) var(--un-backdrop-opacity,) var(--un-backdrop-saturate,) var(--un-backdrop-sepia,);backdrop-filter:var(--un-backdrop-blur,) var(--un-backdrop-brightness,) var(--un-backdrop-contrast,) var(--un-backdrop-grayscale,) var(--un-backdrop-hue-rotate,) var(--un-backdrop-invert,) var(--un-backdrop-opacity,) var(--un-backdrop-saturate,) var(--un-backdrop-sepia,)}.filter{filter:var(--un-blur,) var(--un-brightness,) var(--un-contrast,) var(--un-grayscale,) var(--un-hue-rotate,) var(--un-invert,) var(--un-saturate,) var(--un-sepia,) var(--un-drop-shadow,)}.tabular-nums{--un-numeric-spacing:tabular-nums;font-variant-numeric:var(--un-ordinal,) var(--un-slashed-zero,) var(--un-numeric-figure,) var(--un-numeric-spacing,) var(--un-numeric-fraction,)}.space-y-4{:where(&>:not(:last-child)){--un-space-y-reverse:0;margin-block-start:calc(calc(var(--spacing) * 4) * var(--un-space-y-reverse));margin-block-end:calc(calc(var(--spacing) * 4) * calc(1 - var(--un-space-y-reverse)))}}@media (max-width:calc(48rem - 0.1px)){.max-md\:hidden{display:none}}@media (max-width:calc(40rem - 0.1px)){.max-sm\:hidden{display:none}}@media (min-width:40rem){.sm\:gap-5{gap:calc(var(--spacing) * 5)}.sm\:gap-6{gap:calc(var(--spacing) * 6)}.sm\:col-span-2{grid-column:span 2/span 2}.sm\:grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.sm\:grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}}@media (min-width:48rem){.md\:hidden{display:none}}body{font-family:MiSans,ui-sans-serif,system-ui,-apple-system,PingFang SC,HarmonyOS Sans SC,Microsoft YaHei,Segoe UI,sans-serif}:root{--font-serif-en:"Lora","Iowan Old Style","Palatino Linotype",Palatino,Georgia,"Times New Roman",serif;--font-sans:"MiSans",ui-sans-serif,system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Segoe UI",sans-serif}html .radix-themes{--default-font-family:var(--font-sans)}.serif-en{font-family:var(--font-serif-en)}.settings-field{display:grid;grid-template-columns:max-content minmax(0,1fr);align-items:center;gap:var(--space-3);min-height:36px}html .settings-rate{width:min(100%,20rem);min-width:0}html .settings-voice-trigger{max-width:100%;min-width:0}.voice-list{padding:2px 12px 2px 2px}.voice-list-row{display:grid;grid-template-columns:minmax(0,1fr) 72px;align-items:center;column-gap:var(--space-2);border-bottom:1px solid var(--gray-a4)}.voice-list-row:last-child{border-bottom:0}.voice-list-row[data-selected=true]{background:var(--accent-a3);border-radius:var(--radius-3)}html .settings-voice-choice{box-sizing:border-box;display:grid;grid-template-columns:minmax(0,1fr) 16px;gap:var(--space-2);min-width:0;width:100%;height:64px;margin:0;padding:var(--space-2) var(--space-2);text-align:left}.voice-list-label{display:block;min-width:0}.voice-list-name{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:var(--font-weight-medium)}.voice-list-language{display:block;margin-top:2px;color:var(--gray-11);font-size:var(--font-size-1);line-height:var(--line-height-1)}.voice-list-check{display:flex;align-items:center;color:var(--accent-11)}html .voice-list-preview{box-sizing:border-box;width:72px;height:36px;margin:0}.unit-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:var(--space-2)}@media (min-width:640px){.unit-grid{grid-template-columns:repeat(8,minmax(0,1fr))}}.help-item{display:grid;grid-template-columns:6rem minmax(0,1fr);gap:var(--space-3);align-items:baseline}.today-summary{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:var(--space-4)}@media (max-width:359px){.help-item{grid-template-columns:1fr;gap:var(--space-2)}}html .word-speak{background:none;border:0;padding:0;text-align:left;color:inherit;max-width:100%;overflow-wrap:anywhere}.word-speak:focus-visible,[role=button]:focus-visible{outline:2px solid var(--accent-8);outline-offset:3px;border-radius:var(--radius-2)}.practice-prompt{padding:clamp(16px,3vw,24px);background:var(--gray-a2);border-radius:var(--radius-3);text-align:left;overflow-wrap:anywhere}.practice-prompt-listen{display:flex;flex-direction:column;align-items:center;gap:var(--space-3)}.practice-meaning{display:flex;align-items:baseline;gap:var(--space-3);font-size:clamp(20px,2.5vw,26px);line-height:1.65}.practice-meaning>:last-child{min-width:0}.practice-pos{flex-shrink:0;max-width:35%;font-size:14px;font-weight:var(--font-weight-medium);color:var(--gray-11)}.practice-meaning-secondary{font-size:16px;color:var(--gray-11)}html .practice-sentence{font-size:clamp(18px,2.2vw,24px);line-height:1.85}.typing-input-frame{container-type:inline-size;padding:24px 16px;border-radius:var(--radius-3);min-height:104px;display:flex;align-items:center;justify-content:center;box-shadow:inset 0 0 0 1px var(--gray-a5);transition:box-shadow .15s}.typing-input-frame:focus-within{box-shadow:inset 0 0 0 2px var(--accent-a6)}.answer-cells{display:flex;gap:12px .12em;width:100%}.answer-cells,.answer-word{flex-wrap:wrap;justify-content:center}.answer-word{display:inline-flex;gap:.12em;max-width:100%}.practice-answer{overflow-wrap:anywhere}html .practice-actions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));width:min(100%,380px);align-self:center}html .practice-actions>.rt-Button{box-sizing:border-box;width:100%;min-width:0;padding-inline:6px}.practice-actions>.rt-Text{grid-column:1/-1}@media (max-width:359px){html .practice-actions>.rt-Button{font-size:14px;gap:6px}}html .unit-grid>.rt-Button{min-width:0;padding-inline:var(--space-1);white-space:nowrap}html .radix-themes[data-is-root-theme=true]{min-height:100dvh}html .rt-TextFieldInput{font-size:1.0625rem}html .rt-SegmentedControlItem{min-width:0}html .rt-SegmentedControlRoot{min-width:0;grid-auto-columns:minmax(0,1fr)}@media (max-width:359px){html .rt-SegmentedControlItemLabel{padding-inline:4px;font-size:14px}}html .browse-unit-trigger{width:100%;justify-content:space-between}html .rt-TableRoot tbody tr{transition:background-color .15s}html .rt-TableRoot tbody tr:hover{background-color:var(--gray-a2)}html .rt-TableCell.cell-group-label{height:auto;padding-block:var(--space-2)}@keyframes u-fade-in{0%{opacity:0}to{opacity:1}}@keyframes u-fade-out{0%{opacity:1}to{opacity:0}}@keyframes u-in-up{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes u-pop{0%{opacity:0;transform:scale(.85)}60%{transform:scale(1.04)}to{opacity:1;transform:scale(1)}}@keyframes u-slide-in-right{0%{opacity:0;transform:translateX(48px)}to{opacity:1;transform:translateX(0)}}@keyframes u-shake{0%,to{transform:translateX(0)}20%{transform:translateX(-5px)}40%{transform:translateX(4px)}60%{transform:translateX(-3px)}80%{transform:translateX(2px)}}.anim-in-up{animation:u-in-up .3s cubic-bezier(.22,1,.36,1) both}.anim-pop{animation:u-pop .32s cubic-bezier(.22,1,.36,1) both}.anim-shake{animation:u-shake .4s ease both}.anim-slide-in-right{animation:u-slide-in-right .28s cubic-bezier(.22,1,.36,1) both}@media (prefers-reduced-motion:reduce){*,:after,:before{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}@keyframes u-blink{0%,55%{opacity:1}56%,to{opacity:0}}.u-blink{animation:u-blink 1.1s step-end infinite}