@layer properties{@supports (((-webkit-hyphens:none)) and (not (margin-trim:inline))) or ((-moz-orient:inline) and (not (color:rgb(from red r g b)))){*,:before,:after,::backdrop{--tw-space-y-reverse:0;--tw-font-weight:initial;--tw-ordinal:initial;--tw-slashed-zero:initial;--tw-numeric-figure:initial;--tw-numeric-spacing:initial;--tw-numeric-fraction:initial;--tw-shadow:0 0 #0000;--tw-shadow-color:initial;--tw-shadow-alpha:100%;--tw-inset-shadow:0 0 #0000;--tw-inset-shadow-color:initial;--tw-inset-shadow-alpha:100%;--tw-ring-color:initial;--tw-ring-shadow:0 0 #0000;--tw-inset-ring-color:initial;--tw-inset-ring-shadow:0 0 #0000;--tw-ring-inset:initial;--tw-ring-offset-width:0px;--tw-ring-offset-color:#fff;--tw-ring-offset-shadow:0 0 #0000;--tw-blur:initial;--tw-brightness:initial;--tw-contrast:initial;--tw-grayscale:initial;--tw-hue-rotate:initial;--tw-invert:initial;--tw-opacity:initial;--tw-saturate:initial;--tw-sepia:initial;--tw-drop-shadow:initial;--tw-drop-shadow-color:initial;--tw-drop-shadow-alpha:100%;--tw-drop-shadow-size:initial}}}@layer theme{:root,:host{--font-sans:-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-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--spacing:.25rem;--container-sm:24rem;--container-xl:36rem;--container-2xl:42rem;--text-xs:.75rem;--text-xs--line-height:calc(1 / .75);--text-sm:.875rem;--text-sm--line-height:calc(1.25 / .875);--text-base:1rem;--text-base--line-height:calc(1.5 / 1);--text-lg:1.125rem;--text-lg--line-height:calc(1.75 / 1.125);--text-xl:1.25rem;--text-xl--line-height:calc(1.75 / 1.25);--text-2xl:1.5rem;--text-2xl--line-height:calc(2 / 1.5);--text-3xl:1.875rem;--text-3xl--line-height:calc(2.25 / 1.875);--text-4xl:2.25rem;--text-4xl--line-height:calc(2.5 / 2.25);--text-5xl:3rem;--text-5xl--line-height:1;--font-weight-normal:400;--font-weight-semibold:600;--font-weight-bold:700;--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;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-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,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;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:var(--default-mono-font-family,ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace);font-feature-settings:var(--default-mono-font-feature-settings,normal);font-variation-settings:var(--default-mono-font-variation-settings,normal);font-size:1em}small{font-size:80%}sub,sup{vertical-align:baseline;font-size:75%;line-height:0;position:relative}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}ol,ul,menu{list-style:none}img,svg,video,canvas,audio,iframe,embed,object{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}button,input,select,optgroup,textarea{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}::file-selector-button{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}: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:currentColor}@supports (color:color-mix(in lab, red, red)){::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{padding-block:0}::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-day-field{padding-block:0}::-webkit-datetime-edit-hour-field{padding-block:0}::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-millisecond-field{padding-block:0}::-webkit-datetime-edit-meridiem-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}button,input:where([type=button],[type=reset],[type=submit]){appearance:button}::file-selector-button{appearance:button}::-webkit-inner-spin-button{height:auto}::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}}@layer components;@layer utilities{.fixed{position:fixed}.relative{position:relative}.static{position:static}.container{width:100%}@media (min-width:40rem){.container{max-width:40rem}}@media (min-width:48rem){.container{max-width:48rem}}@media (min-width:64rem){.container{max-width:64rem}}@media (min-width:80rem){.container{max-width:80rem}}@media (min-width:96rem){.container{max-width:96rem}}.mx-auto{margin-inline:auto}.mt-1{margin-top:var(--spacing)}.mt-2{margin-top:calc(var(--spacing) * 2)}.mt-3{margin-top:calc(var(--spacing) * 3)}.mt-4{margin-top:calc(var(--spacing) * 4)}.mt-6{margin-top:calc(var(--spacing) * 6)}.mt-8{margin-top:calc(var(--spacing) * 8)}.mt-10{margin-top:calc(var(--spacing) * 10)}.mt-12{margin-top:calc(var(--spacing) * 12)}.\!mb-0{margin-bottom:0!important}.mb-1{margin-bottom:var(--spacing)}.mb-2{margin-bottom:calc(var(--spacing) * 2)}.mb-3{margin-bottom:calc(var(--spacing) * 3)}.mb-4{margin-bottom:calc(var(--spacing) * 4)}.mb-6{margin-bottom:calc(var(--spacing) * 6)}.ml-2{margin-left:calc(var(--spacing) * 2)}.block{display:block}.flex{display:flex}.hidden{display:none}.inline-flex{display:inline-flex}.table{display:table}.h-full{height:100%}.min-h-full{min-height:100%}.\!w-auto{width:auto!important}.max-w-2xl{max-width:var(--container-2xl)}.max-w-prose{max-width:65ch}.max-w-sm{max-width:var(--container-sm)}.max-w-xl{max-width:var(--container-xl)}.flex-1{flex:1}.shrink{flex-shrink:1}.grow{flex-grow:1}.flex-col{flex-direction:column}.flex-wrap{flex-wrap:wrap}.items-baseline{align-items:baseline}.items-center{align-items:center}.items-end{align-items:flex-end}.justify-between{justify-content:space-between}.justify-center{justify-content:center}.gap-2{gap:calc(var(--spacing) * 2)}.gap-3{gap:calc(var(--spacing) * 3)}.gap-4{gap:calc(var(--spacing) * 4)}:where(.space-y-12>:not(:last-child)){--tw-space-y-reverse:0;margin-block-start:calc(calc(var(--spacing) * 12) * var(--tw-space-y-reverse));margin-block-end:calc(calc(var(--spacing) * 12) * calc(1 - var(--tw-space-y-reverse)))}.\!py-1{padding-block:var(--spacing)!important}.py-6{padding-block:calc(var(--spacing) * 6)}.py-8{padding-block:calc(var(--spacing) * 8)}.text-center{text-align:center}.text-right{text-align:right}.text-2xl{font-size:var(--text-2xl);line-height:var(--tw-leading,var(--text-2xl--line-height))}.text-3xl{font-size:var(--text-3xl);line-height:var(--tw-leading,var(--text-3xl--line-height))}.text-4xl{font-size:var(--text-4xl);line-height:var(--tw-leading,var(--text-4xl--line-height))}.text-5xl{font-size:var(--text-5xl);line-height:var(--tw-leading,var(--text-5xl--line-height))}.text-base{font-size:var(--text-base);line-height:var(--tw-leading,var(--text-base--line-height))}.text-lg{font-size:var(--text-lg);line-height:var(--tw-leading,var(--text-lg--line-height))}.text-sm{font-size:var(--text-sm);line-height:var(--tw-leading,var(--text-sm--line-height))}.text-xl{font-size:var(--text-xl);line-height:var(--tw-leading,var(--text-xl--line-height))}.text-xs{font-size:var(--text-xs);line-height:var(--tw-leading,var(--text-xs--line-height))}.font-bold{--tw-font-weight:var(--font-weight-bold);font-weight:var(--font-weight-bold)}.font-normal{--tw-font-weight:var(--font-weight-normal);font-weight:var(--font-weight-normal)}.font-semibold{--tw-font-weight:var(--font-weight-semibold);font-weight:var(--font-weight-semibold)}.whitespace-nowrap{white-space:nowrap}.ordinal{--tw-ordinal:ordinal;font-variant-numeric:var(--tw-ordinal,) var(--tw-slashed-zero,) var(--tw-numeric-figure,) var(--tw-numeric-spacing,) var(--tw-numeric-fraction,)}.antialiased{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.opacity-50{opacity:.5}.opacity-60{opacity:.6}.opacity-70{opacity:.7}.opacity-80{opacity:.8}.shadow{--tw-shadow:0 1px 3px 0 var(--tw-shadow-color,#0000001a), 0 1px 2px -1px var(--tw-shadow-color,#0000001a);box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.blur{--tw-blur:blur(8px);filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,)}}:root{--bg:#fbfaf7;--fg:#1f1d1a;--muted:#6b6560;--line:#e6e1d9;--card:#fff;--accent:#b5442c;--accent-soft:#fbeae5;--tone-1:#c0392b;--tone-2:#d68910;--tone-3:#1e8449;--tone-4:#1f5fa8;--tone-5:#7f8c8d}@media (prefers-color-scheme:dark){:root{--bg:#15141a;--fg:#ece9e3;--muted:#a39d95;--line:#2b2933;--card:#1e1d24;--accent:#e7745a;--accent-soft:#3a231d;--tone-1:#ff6b5b;--tone-2:#f5b041;--tone-3:#58d68d;--tone-4:#5dade2;--tone-5:#a3a3a3}}body{background:var(--bg);color:var(--fg);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.6}.hanzi{font-family:PingFang SC,Hiragino Sans GB,Noto Sans CJK SC,Noto Sans SC,Microsoft YaHei,Songti SC,serif;line-height:1.3}.container{max-width:56rem;margin:0 auto;padding-inline:1rem}a{color:var(--accent)}a:hover{text-decoration:underline}.site-header{border-bottom:1px solid var(--line);background:var(--card);padding-block:.75rem}.site-header .container{flex-wrap:wrap;row-gap:.4rem}.brand{color:var(--fg);font-weight:700;text-decoration:none}.brand .hanzi{color:var(--accent);margin-right:.4rem}.site-header nav{flex-wrap:wrap;row-gap:.3rem}.tone-1{color:var(--tone-1)}.tone-2{color:var(--tone-2)}.tone-3{color:var(--tone-3)}.tone-4{color:var(--tone-4)}.tone-5{color:var(--tone-5)}.pinyin{font-style:normal}ruby{ruby-position:over}ruby rt{opacity:.85;letter-spacing:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:.5em}.speak-btn{color:var(--muted);border:1px solid var(--line);background:var(--card);cursor:pointer;border-radius:999px;flex-shrink:0;justify-content:center;align-self:center;align-items:center;width:1.6rem;height:1.6rem;display:inline-flex;position:relative}.speak-btn:hover{color:var(--accent);border-color:var(--accent)}.speak-btn:after{content:"";position:absolute;inset:-11px}.vocab-table-wrap{margin-top:.75rem;overflow-x:auto}.vocab-table{border-collapse:collapse;width:100%}.vocab-table td{border-bottom:1px solid var(--line);vertical-align:middle;padding:.6rem .5rem}.vocab-hanzi{white-space:nowrap;width:1%;padding-right:1.5rem!important}.vocab-note{color:var(--muted);margin-top:.15rem;font-size:.85rem}.pos{text-transform:uppercase;letter-spacing:.05em;color:var(--muted);border:1px solid var(--line);border-radius:4px;margin-right:.5rem;padding:0 .3rem;font-size:.7rem}.example-list{flex-direction:column;gap:.9rem;margin:1rem 0 0;padding:0;list-style:none;display:flex}.example{border-left:3px solid var(--accent);background:var(--card);border-radius:0 6px 6px 0;padding:.6rem .9rem}.example-en{margin-top:.2rem}.example-note{color:var(--muted);margin-top:.15rem;font-size:.85rem}.prose-md{max-width:68ch}.prose-md p{margin:.75rem 0}.prose-md ul,.prose-md ol{margin:.75rem 0 .75rem 1.5rem}.prose-md ul{list-style:outside}.prose-md ol{list-style:decimal}.prose-md li{margin:.25rem 0}.prose-md h3{margin:1.25rem 0 .5rem;font-size:1.15rem;font-weight:600}.prose-md h4{margin:1rem 0 .4rem;font-weight:600}.prose-md strong{font-weight:700}.prose-md code{background:var(--accent-soft);border-radius:4px;padding:.05em .35em;font-family:inherit;font-size:.95em}.prose-md blockquote{border-left:3px solid var(--line);color:var(--muted);margin:.75rem 0;padding-left:1rem}.prose-md table{border-collapse:collapse;margin:.75rem 0;display:block;overflow-x:auto}.prose-md th,.prose-md td{border:1px solid var(--line);text-align:left;padding:.35rem .6rem}.prose-md hr{border:0;border-top:1px solid var(--line);margin:1.25rem 0}.lesson-list{flex-direction:column;gap:.5rem;margin:0;padding:0;list-style:none;display:flex}.lesson-list a{background:var(--card);border:1px solid var(--line);color:var(--fg);border-radius:8px;align-items:baseline;gap:1rem;padding:.7rem .9rem;text-decoration:none;display:flex}.lesson-list a:hover{border-color:var(--accent);text-decoration:none}.lesson-list .done a{opacity:.7}.lesson-num{color:var(--accent);min-width:2.2rem;font-weight:700}.lesson-title{font-weight:600;display:block}.lesson-summary{color:var(--muted);font-size:.9rem;display:block}.lesson-nav{border-top:1px solid var(--line);border-bottom:1px solid var(--line);justify-content:space-between;gap:1rem;margin-top:1rem;padding:.75rem 0;font-size:.9rem;display:flex}.btn{border:1px solid var(--line);background:var(--card);color:var(--fg);cursor:pointer;border-radius:6px;min-height:2.75rem;padding:.6rem .9rem;font-size:.95rem}.btn:hover{border-color:var(--accent)}.btn-done{background:var(--accent);color:#fff;border-color:var(--accent)}.btn-hit{border-color:var(--tone-3);color:var(--tone-3)}.btn-miss{border-color:var(--tone-1);color:var(--tone-1)}select,.search{border:1px solid var(--line);background:var(--card);color:var(--fg);border-radius:6px;padding:.35rem .5rem}.search{width:100%;margin-bottom:.5rem;padding:.6rem .8rem;font-size:1rem}.flashcard{background:var(--card);border:1px solid var(--line);cursor:pointer;border-radius:12px;flex-direction:column;justify-content:center;align-items:center;width:100%;min-height:14rem;padding:1.5rem;display:flex;position:relative}.flashcard-face{text-align:center;flex-direction:column;align-items:center;gap:.5rem;display:flex}.flashcard-hint{color:var(--muted);font-size:.75rem;position:absolute;bottom:.6rem}.card-finished{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:1.5rem}.quiz-prompt{background:var(--card);border:1px solid var(--line);text-align:center;border-radius:12px;margin-bottom:1rem;padding:2rem}.quiz-options{grid-template-columns:1fr 1fr;gap:.6rem;display:grid}@media (max-width:480px){.quiz-options{grid-template-columns:1fr}}.quiz-option{background:var(--card);border:1px solid var(--line);cursor:pointer;color:var(--fg);border-radius:8px;padding:.9rem;font-size:1rem}.quiz-option:hover{border-color:var(--accent)}.quiz-option.right{border-color:var(--tone-3);background:var(--tone-3)}@supports (color:color-mix(in lab, red, red)){.quiz-option.right{background:color-mix(in srgb, var(--tone-3) 15%, var(--card))}}.quiz-option.wrong{border-color:var(--tone-1);background:var(--tone-1)}@supports (color:color-mix(in lab, red, red)){.quiz-option.wrong{background:color-mix(in srgb, var(--tone-1) 15%, var(--card))}}.quiz-option.dim{opacity:.5}.bar{background:var(--line);border-radius:999px;height:8px;overflow:hidden}.bar-fill{background:var(--tone-3);height:100%;transition:width .3s}.bar-sm{vertical-align:middle;width:3.5rem;height:6px;margin-right:.4rem;display:inline-block}.lesson-progress{background:var(--card);border:1px solid var(--line);border-radius:8px;margin-top:1rem;padding:.75rem .9rem}.lesson-progress .bar{margin-top:.4rem}.lesson-pct{color:var(--muted);white-space:nowrap;align-self:center;font-size:.8rem}.quiz-status{margin-bottom:1rem}.banner{background:var(--accent-soft);border-radius:8px;margin-bottom:1rem;padding:.6rem .9rem;font-size:.95rem}.link{color:var(--accent);cursor:pointer;font:inherit;background:0 0;border:0;padding:0;text-decoration:underline}.review-tag{text-transform:uppercase;letter-spacing:.05em;color:var(--muted);font-size:.7rem;position:absolute;top:.5rem;left:.75rem}.quiz-word-progress{color:var(--muted);font-size:.75rem;position:absolute;top:.5rem;right:.75rem}.quiz-prompt,.quiz-option{position:relative}.key-hint{color:var(--muted);font-size:.65rem;position:absolute;top:.3rem;left:.5rem}.hint-btn{text-align:center;background:var(--accent-soft);width:100%;color:var(--accent);border:1px dashed var(--accent);display:block}@supports (color:color-mix(in lab, red, red)){.hint-btn{border:1px dashed color-mix(in srgb, var(--accent) 40%, transparent)}}.hint-btn{cursor:pointer;border-radius:8px;min-height:2.75rem;margin-bottom:.75rem;padding:.6rem;font-size:.9rem}.hint-btn:hover{background:var(--accent)}@supports (color:color-mix(in lab, red, red)){.hint-btn:hover{background:color-mix(in srgb, var(--accent) 12%, var(--accent-soft))}}.modal-backdrop{z-index:50;background:#00000080;justify-content:center;align-items:center;padding:1rem;display:flex;position:fixed;inset:0}.modal-card{background:var(--card);border-radius:12px;width:100%;max-width:26rem;padding:1.5rem;position:relative;box-shadow:0 10px 40px #00000040}.modal-close{width:2.5rem;height:2.5rem;color:var(--muted);cursor:pointer;z-index:1;background:0 0;border:0;border-radius:999px;font-size:1.5rem;line-height:1;position:absolute;top:.5rem;right:.5rem}.modal-close:hover{color:var(--fg);background:var(--bg)}.modal-label{opacity:.6;margin-bottom:.5rem;padding-right:2.5rem;font-size:.75rem}.answer-reveal{border:1px solid var(--line);border-radius:10px;flex-direction:column;gap:.6rem;margin-top:1rem;padding:1rem 1.1rem;display:flex}.answer-reveal.correct{background:var(--tone-3)}@supports (color:color-mix(in lab, red, red)){.answer-reveal.correct{background:color-mix(in srgb, var(--tone-3) 12%, var(--card))}}.answer-reveal.correct{border-color:var(--tone-3)}@supports (color:color-mix(in lab, red, red)){.answer-reveal.correct{border-color:color-mix(in srgb, var(--tone-3) 45%, var(--line))}}.answer-reveal.incorrect{background:var(--tone-1)}@supports (color:color-mix(in lab, red, red)){.answer-reveal.incorrect{background:color-mix(in srgb, var(--tone-1) 12%, var(--card))}}.answer-reveal.incorrect{border-color:var(--tone-1)}@supports (color:color-mix(in lab, red, red)){.answer-reveal.incorrect{border-color:color-mix(in srgb, var(--tone-1) 45%, var(--line))}}.answer-reveal-head{flex-wrap:wrap;align-items:center;gap:.75rem;display:flex}.answer-reveal-status{font-size:1rem;font-weight:700}.answer-reveal.correct .answer-reveal-status{color:var(--tone-3)}.answer-reveal.incorrect .answer-reveal-status{color:var(--tone-1)}.answer-reveal-meaning{font-size:1.15rem;font-weight:600}.answer-reveal-note{color:var(--fg);opacity:.85;font-size:.95rem}.answer-reveal-actions{justify-content:flex-end;display:flex}.setting{border-bottom:1px solid var(--line);cursor:pointer;justify-content:space-between;align-items:center;gap:1rem;padding:.75rem 0;display:flex}.setting small{color:var(--muted);font-size:.85rem;display:block}.setting input[type=checkbox]{width:1.2rem;height:1.2rem;accent-color:var(--accent);flex-shrink:0}.hide-pinyin .lesson rt{visibility:hidden}.hide-pinyin .lesson ruby:hover rt,.hide-pinyin .lesson .example:hover rt{visibility:visible}.hide-pinyin .lesson .example-zh .pinyin,.hide-pinyin .lesson .vocab-hanzi .pinyin{visibility:hidden}.hide-pinyin .lesson .example:hover .pinyin,.hide-pinyin .lesson tr:hover .pinyin{visibility:visible}.auth-form{background:var(--card);border:1px solid var(--line);border-radius:12px;flex-direction:column;gap:.9rem;padding:1.25rem;display:flex}.auth-form label{flex-direction:column;gap:.3rem;font-size:.9rem;font-weight:600;display:flex}.auth-form label.row{flex-direction:row;align-items:center;gap:.5rem}.auth-form input:not([type=checkbox]){border:1px solid var(--line);background:var(--bg);color:var(--fg);border-radius:6px;padding:.55rem .7rem;font-size:1rem;font-weight:400}.auth-form button{align-self:flex-start}.form-error{color:var(--tone-1);font-size:.9rem}.form-ok{color:var(--tone-3);font-size:.9rem}.vocab-table th{text-align:left;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);border-bottom:1px solid var(--line);padding:.4rem .5rem;font-size:.75rem}@media (max-width:480px){.vocab-table-wrap{overflow-x:visible}.vocab-table thead{display:none}.vocab-table,.vocab-table tbody,.vocab-table tr,.vocab-table td{width:auto;display:block}.vocab-table tr{border-bottom:1px solid var(--line);padding:.6rem 0}.vocab-table td{white-space:normal;border-bottom:none;padding:.15rem 0}.vocab-hanzi{padding-right:0!important}}.heatmap-legend{gap:1.25rem;margin-bottom:1rem;font-weight:600;display:flex}.legend-item{align-items:center;gap:.4rem;display:flex}.legend-swatch{border-radius:4px;width:1rem;height:1rem;display:inline-block}.legend-swatch.mastered{background:var(--tone-3)}.legend-swatch.learning{background:var(--muted);opacity:.5}.legend-swatch.new{border:1.5px solid var(--line);background:0 0}.heatmap-controls{flex-wrap:wrap;align-items:center;gap:.6rem;display:flex}.heatmap-controls .search{flex:16rem;width:auto;margin-bottom:0}.seg{border:1px solid var(--line);border-radius:8px;display:inline-flex;overflow:hidden}.seg button{background:var(--card);color:var(--fg);cursor:pointer;border:0;border-right:1px solid var(--line);min-height:2.5rem;padding:.5rem .8rem;font-size:.85rem}.seg button:last-child{border-right:0}.seg button.active{background:var(--accent);color:#fff}.heatmap-grid{flex-wrap:wrap;gap:.4rem;display:flex}.heatmap-tile{background:var(--card);border:1.5px solid var(--line);min-width:2.75rem;height:2.75rem;color:var(--fg);border-radius:8px;justify-content:center;align-items:center;padding:0 .5rem;text-decoration:none;display:inline-flex}.heatmap-tile:hover{border-color:var(--accent);text-decoration:none}.heatmap-tile .hanzi{font-size:1.1rem}.heatmap-tile.mastered{background:var(--tone-3)}@supports (color:color-mix(in lab, red, red)){.heatmap-tile.mastered{background:color-mix(in srgb, var(--tone-3) 30%, var(--card))}}.heatmap-tile.mastered{border-color:var(--tone-3)}.heatmap-tile.learning{background:var(--muted)}@supports (color:color-mix(in lab, red, red)){.heatmap-tile.learning{background:color-mix(in srgb, var(--muted) 25%, var(--card))}}.heatmap-tile.learning{border-color:var(--muted)}.heatmap-tile.new{background:var(--card);opacity:.7;border-style:dashed}.status-dot{border-radius:999px;width:.6rem;height:.6rem;margin-right:.3rem;display:inline-block}.status-dot.mastered{background:var(--tone-3)}.status-dot.learning{background:var(--muted)}.status-dot.new{border:1.5px solid var(--line);background:0 0}.vocab-example{color:var(--muted);flex-wrap:wrap;align-items:baseline;gap:.6rem;margin-top:.3rem;font-size:.9rem;display:flex}.vocab-example .hanzi{color:var(--fg);font-size:1.05rem}.hide-pinyin .lesson .vocab-example .pinyin{visibility:hidden}.hide-pinyin .lesson tr:hover .vocab-example .pinyin{visibility:visible}.korean-note{display:none}.show-korean-notes .korean-note{background:var(--tone-4);border-radius:8px;margin-top:1rem;padding:.9rem 1.1rem;display:block}@supports (color:color-mix(in lab, red, red)){.show-korean-notes .korean-note{background:color-mix(in srgb, var(--tone-4) 8%, var(--card))}}.show-korean-notes .korean-note{border:1px solid var(--tone-4)}@supports (color:color-mix(in lab, red, red)){.show-korean-notes .korean-note{border:1px solid color-mix(in srgb, var(--tone-4) 30%, var(--line))}}.korean-note-label{text-transform:uppercase;letter-spacing:.04em;color:var(--tone-4);margin-bottom:.4rem;font-size:.75rem;font-weight:700}.korean-note .prose-md{max-width:none}.korean-note .prose-md p:first-child{margin-top:0}.korean-note .prose-md p:last-child{margin-bottom:0}@property --tw-space-y-reverse{syntax:"*";inherits:false;initial-value:0}@property --tw-font-weight{syntax:"*";inherits:false}@property --tw-ordinal{syntax:"*";inherits:false}@property --tw-slashed-zero{syntax:"*";inherits:false}@property --tw-numeric-figure{syntax:"*";inherits:false}@property --tw-numeric-spacing{syntax:"*";inherits:false}@property --tw-numeric-fraction{syntax:"*";inherits:false}@property --tw-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-shadow-color{syntax:"*";inherits:false}@property --tw-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-inset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-shadow-color{syntax:"*";inherits:false}@property --tw-inset-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-ring-color{syntax:"*";inherits:false}@property --tw-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-ring-color{syntax:"*";inherits:false}@property --tw-inset-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-ring-inset{syntax:"*";inherits:false}@property --tw-ring-offset-width{syntax:"<length>";inherits:false;initial-value:0}@property --tw-ring-offset-color{syntax:"*";inherits:false;initial-value:#fff}@property --tw-ring-offset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}