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var(--font-ui);font-optical-sizing:auto}::selection{background:var(--color-selection-bg);color:var(--color-selection-text)}button,input,select{border-color:var(--color-control-border);border-radius:var(--radius-md)}button,.button{min-height:48px;font-size:var(--text-ui);line-height:var(--line-ui);font-weight:var(--font-weight-label);transition:background-color .14s,border-color .14s}button:disabled,.button:disabled{background:var(--color-disabled-bg);color:var(--color-disabled-text);border-color:var(--line);opacity:1;cursor:not-allowed}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--color-focus);outline-offset:3px}button:hover:not(:disabled),.button:hover{background:var(--color-hover)}.primary{background:var(--color-primary);color:var(--color-on-primary);border:1px solid var(--color-primary-border)}.primary:hover:not(:disabled){background:var(--color-primary-hover)}.primary:active:not(:disabled){background:var(--color-primary-active)}input,select{min-height:48px}input::placeholder{color:var(--muted);opacity:1}h1{font:var(--font-weight-heading) 2rem/1.25 var(--font-ui);letter-spacing:-.02em}h2{font:var(--font-weight-heading) 1.125rem/1.45 var(--font-ui)}h3{font:var(--font-weight-heading) 1.5rem/1.35 var(--font-ui)}.eyebrow{font-size:var(--text-caption);letter-spacing:.08em;color:var(--muted)}.text-button{color:var(--accent);font-weight:var(--font-weight-label)}.muted{font-size:var(--text-caption)}.error{color:var(--color-danger-fg)}.saved{color:var(--color-text-secondary);font-size:var(--text-caption)}main{max-width:1120px;min-height:85dvh;padding:32px 32px 104px}.panel{box-shadow:none;border-radius:14px;padding:24px}.narrow{max-width:400px}.stack>.row{flex-wrap:wrap}.book>div{min-width:0}.profile-settings{border-block:1px solid var(--line);padding-block:16px}.topbar{gap:16px;max-width:1120px;min-height:64px;padding:8px 32px}.brand{background:0 0;border:0;border-radius:6px;align-items:center;width:144px;min-height:44px;padding:0;display:inline-flex}.brand:hover:not(:disabled){background:0 0}.brand-image{width:100%;height:36px}.show-dark{display:none}[data-theme=dark] .show-dark{display:block}[data-theme=dark] .show-light{display:none}.theme-toggle{-webkit-tap-highlight-color:transparent;background:0 0;border:0;border-radius:24px;flex-shrink:0;align-items:center;width:144px;height:44px;min-height:44px;padding:0;display:flex}.theme-toggle:hover:not(:disabled){background:0 0}.theme-image{width:100%;height:40px;display:block}.theme-image.show-dark{display:none}[data-theme=dark] .theme-image.show-dark{display:block}.ui-icon{flex-shrink:0;width:22px;height:22px;display:block}.icon-button{width:44px;height:44px;min-height:44px;color:var(--color-text-secondary);background:0 0;border:1px solid #0000;border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;padding:10px;display:inline-flex}.book-grid{grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:32px;margin-top:18px}.book{flex-direction:column;align-items:flex-start;gap:12px;min-width:0;padding:0;display:flex}.book h3{overflow-wrap:anywhere;margin:0 0 4px;font-size:1.125rem}.book p{font-size:var(--text-caption);margin:8px 0}.book-cover-button{text-align:center;background:0 0;border:0;border-radius:3px;width:100%;max-width:180px;padding:0;display:block}.book-cover-button:hover:not(:disabled){background:0 0}.book-cover-button:hover:not(:disabled) .book-cover{border-color:var(--color-control-border)}.book-cover-button:disabled{background:0 0}.book-cover{aspect-ratio:2/3;background:var(--color-surface-muted);border:1px solid var(--line);text-align:center;width:100%;color:var(--ink);border-radius:3px;flex-direction:column;justify-content:center;align-items:center;padding:24px 14px 20px 18px;display:flex;position:relative;overflow:hidden}.book-cover:before{content:"";background:var(--line);width:1px;position:absolute;inset:0 auto 0 6px}.book-cover small{font:400 .5625rem/1.35 var(--font-ui);letter-spacing:.05em;color:var(--color-text-secondary);text-transform:uppercase}.cover-title{font:400 clamp(1.125rem,2vw,1.5rem)/1.2 var(--font-reading);overflow-wrap:anywhere;-webkit-line-clamp:5;-webkit-box-orient:vertical;margin-top:auto;padding-top:14px;display:-webkit-box;overflow:hidden}.cover-rule{background:var(--accent);width:24px;height:2px;min-height:2px;margin:12px 0;display:block}.book-cover .cover-author{-webkit-line-clamp:2;-webkit-box-orient:vertical;margin-top:auto;display:-webkit-box;overflow:hidden}.book-help{font-size:var(--text-caption);color:var(--muted);margin-bottom:12px}.book-help summary{cursor:pointer}.continue-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;display:grid}.continue{background:var(--panel);flex-direction:column;justify-content:flex-start;align-items:stretch;gap:0;min-width:0;display:flex}.continue-progress{margin-top:auto}.continue-placeholder{text-align:center;background:0 0;border-style:dashed;flex-direction:column;justify-content:center;align-items:center;min-height:320px;padding:32px;display:flex}.placeholder-logo{opacity:.22;width:180px;margin-bottom:24px}.placeholder-logo .brand-image{height:48px}.continue-placeholder h3{font:500 1.25rem/1.4 var(--font-reading);color:var(--color-text-secondary);max-width:280px}.continue-placeholder p{color:var(--muted);font-size:var(--text-caption);max-width:260px;margin-top:12px}@media (max-width:767px){.continue-grid{grid-template-columns:minmax(0,1fr);gap:16px}.continue-placeholder{min-height:240px}}.continue-book{align-items:center;gap:24px;min-width:0;display:flex}.continue-book>div:last-child{min-width:0}.continue-book .book-cover{flex-shrink:0;width:112px;padding:16px 10px 12px 14px}.continue-book .cover-title{padding-top:8px;font-size:1rem}.continue-book .cover-rule{margin:8px 0}.continue h3{font-family:var(--font-reading);overflow-wrap:anywhere;font-size:1.5rem;font-weight:500}.continue p{font-size:var(--text-caption);color:var(--muted);margin-top:10px}.continue>button.primary{width:100%;margin-top:20px}.continue>.text-button{align-self:center;margin-top:8px}.book-progress{appearance:none;background:var(--line);width:100%;height:4px;color:var(--accent);border:0;border-radius:3px;margin-top:20px;display:block;overflow:hidden}.book-progress::-webkit-progress-bar{background:var(--line)}.book-progress::-webkit-progress-value{background:var(--accent)}.book-progress::-moz-progress-bar{background:var(--accent)}@media (max-width:600px){.book-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 20px}.book-cover{padding:18px 10px 14px 14px}.book-cover-button{max-width:180px}.book>div>button{font-size:var(--text-control);padding:8px}.continue-book{gap:16px}.continue-book .book-cover{width:112px}.continue h3{font-size:1.25rem}}.prepare-card{border-radius:14px}.word-card h3,.prepare-card .word-card h3{font-size:1.5rem;font-weight:500;line-height:1.35}.word-title{align-items:center}.sound-button{width:44px;height:44px;min-height:44px;color:var(--color-text-secondary);background:0 0;border:1px solid #0000}.ipa{font-family:var(--font-reading-sans);font-size:var(--text-caption)}.meaning{font-size:1rem;line-height:1.5}.example,.prepare-card .example{font:400 1rem/1.6 var(--font-reading);color:var(--color-text-secondary)}.prepare-tags{gap:6px}.prepare-tag{font-size:var(--text-caption);color:var(--color-text-secondary);border-radius:6px;padding:4px 8px}.prepare-caption{font:var(--font-weight-label) var(--text-caption)/var(--line-ui) var(--font-ui);text-transform:none;letter-spacing:normal}.prepare-totals>span{border-radius:10px;padding:12px 16px}.prepare-totals strong{font-size:1.5rem}.prepare-filter-row button{font-size:var(--text-control);font-weight:var(--font-weight-label);border-radius:8px}.prepare-filter-row button[aria-pressed=true]{background:var(--color-accent-soft);color:var(--accent);border-color:var(--accent)}.prepare-filter-row button[aria-pressed=true]:before{content:"✓ "}.prepare-progress progress{height:4px;accent-color:var(--accent)}.prepare-progress progress::-webkit-progress-value{background:var(--accent)}.prepare-progress progress::-moz-progress-bar{background:var(--accent)}.status-button{--status-color:var(--color-text-secondary);--status-bg:var(--color-surface-muted);font-weight:var(--font-weight-label);border-radius:8px}.status-known{--status-color:var(--color-success-fg);--status-bg:var(--color-success-bg)}.status-context{--status-color:var(--color-context-fg);--status-bg:var(--color-context-bg)}.status-tip,.status-sometimes,.status-often{--status-color:var(--color-warning-fg);--status-bg:var(--color-warning-bg)}.prepare-answers .status-button,.prepare-answers .status-button:hover:not(:disabled){color:var(--status-color);background:var(--status-bg)}.status-button[aria-pressed=true],.prepare-answers .status-button[aria-pressed=true]{border-color:var(--accent);color:var(--accent);background:var(--color-accent-soft);box-shadow:inset 0 0 0 1px var(--accent)}.status-button[aria-pressed=true] .status-dot{background:0 0;width:auto;height:auto}.status-button[aria-pressed=true] .status-dot:before{content:"✓";color:var(--accent)}.prepare-answers .status-button:disabled{color:var(--color-disabled-text);background:var(--color-disabled-bg)}.dictionary-row span:first-child{font:500 1.3125rem/1.4 var(--font-reading)}.estimate{font-size:var(--text-caption);border:0;padding:0}.estimate strong{font:500 1.5rem/1.5 var(--font-reading);margin:4px 0;display:inline-block}.overlay{background:var(--overlay)}.sheet{background:var(--color-surface-raised);box-shadow:var(--shadow-floating);border:1px solid var(--line);max-height:75dvh;padding:20px 20px max(20px,env(safe-area-inset-bottom));border-radius:20px 20px 0 0}.sheet>.row{justify-content:space-between}.sheet .word-card h3{font-weight:500}.answers{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;display:grid}.answers button{font-size:var(--text-control);font-weight:var(--font-weight-label);padding:8px}.bottomnav{min-height:64px;padding:6px 8px max(6px,env(safe-area-inset-bottom));background:var(--panel);gap:0}.bottomnav button{width:120px;min-width:0;min-height:52px;font-size:var(--text-control);line-height:var(--line-ui);color:var(--muted);font-weight:var(--font-weight-label);border-radius:6px;flex-direction:column;justify-content:center;align-items:center;gap:2px;padding:4px 8px;display:flex;position:relative}.bottomnav button[aria-current=page]{color:var(--accent);font-weight:var(--font-weight-label);background:0 0!important}.bottomnav button[aria-current=page]:before{content:"";background:var(--accent);width:20px;height:2px;position:absolute;top:-6px}html[data-reader=true],html[data-reader=true] body{background:var(--color-reader-bg)}.reading-main{overflow-anchor:none;max-width:none;padding:0 32px 48px}.reader-shell{color:var(--color-reader-text)}.reader-controls{background:var(--color-reader-bg);flex-wrap:nowrap;align-items:center;gap:8px;max-width:1120px;min-height:64px;margin:auto;padding:8px 0;display:flex}.reader-toolbar-title{text-overflow:ellipsis;white-space:nowrap;min-width:0;font-size:var(--text-caption);color:var(--color-text-secondary);text-align:center;flex:1;overflow:hidden}.reader-tools{flex-shrink:0;gap:8px;display:flex}.reader-controls .icon-button{padding:8px;font-size:1rem;font-weight:500}.reader{max-width:min(64ch,var(--reader-width));font:400 var(--reader-font,var(--reader-size))/var(--reader-line,var(--reader-line-height)) var(--reader-family,var(--font-reading));overflow-wrap:break-word;text-align:start;margin:24px auto 0}.reader p{margin:0 0 1em}.reader .reader-meta{font:400 .875rem/1.5 var(--font-ui);color:var(--muted);margin:12px 0}.reader .chapter-title{font:450 1.75rem/1.3 var(--font-reading);letter-spacing:-.015em;margin:0 0 28px}.reader .token{min-width:0;min-height:0;font:inherit;color:inherit;-webkit-user-select:text;user-select:text;border:0;border-radius:0;padding:0;transition:none}.reader-word-run{white-space:nowrap}.reader [data-testid=reader-text]{-webkit-user-select:text;user-select:text}.reader .token{-webkit-user-select:text;cursor:pointer}.translation-action{z-index:30;bottom:calc(20px + env(safe-area-inset-bottom));background:var(--color-surface);border:1px solid var(--line);border-radius:12px;flex-wrap:wrap;justify-content:center;align-items:center;width:max-content;max-width:calc(100vw - 24px);padding:4px;font-size:.875rem;display:flex;position:fixed;left:50%;transform:translate(-50%);box-shadow:0 4px 24px #0002}.translation-action button{background:0 0;border:0}.translation-action>span{padding:0 12px 8px}.fragment-translation{overflow-wrap:anywhere;padding-top:12px}.fragment-translation>.muted{margin-bottom:6px;padding-right:48px;font-size:.875rem}.fragment-translation>p:not(.muted){white-space:pre-wrap;margin-top:0}.reader .token:hover{background:var(--color-accent-soft)}.reader .token.expression{-webkit-text-decoration-color:var(--color-border);-webkit-text-decoration-color:var(--color-border);-webkit-text-decoration-color:var(--color-border);text-decoration-color:var(--color-border)}.reader .token[data-lookup-active=true]{background:var(--color-accent-soft);text-decoration:underline;-webkit-text-decoration-color:var(--accent);-webkit-text-decoration-color:var(--accent);-webkit-text-decoration-color:var(--accent);text-decoration-color:var(--accent);text-underline-offset:.16em}.reader-footer{border-top:1px solid var(--line);color:var(--muted);font:400 .875rem/1.5 var(--font-ui);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;margin-top:32px;padding-top:16px;display:flex}.reader-footer .primary{color:var(--accent);border-color:var(--color-control-border);font:var(--font-weight-label) 1rem/1.5 var(--font-ui);background:0 0;margin:0}.reader-footer .primary:hover:not(:disabled){background:var(--color-accent-soft)}@media (min-width:768px){.sheet{border-radius:14px;width:min(420px,100% - 64px);max-height:85dvh;top:50%;bottom:auto;transform:translate(-50%,-50%)}}.sheet.translation-sheet{border-radius:20px 20px 0 0;width:min(560px,100%);max-height:70dvh;top:auto;bottom:0;transform:translate(-50%)}@media (max-width:767px){main{padding:24px 20px 100px}.topbar{padding:8px 20px}h1{font-size:1.75rem}.panel{padding:20px}.reading-main{padding:0 24px 32px}.reader-controls{gap:4px;margin:0 -8px}.reader-tools{gap:4px}.reader{margin-top:20px}.reader-toolbar-title{text-align:start}.brand{width:128px}.theme-toggle{width:136px}}@media (max-width:359px){main{padding-inline:16px}.topbar{gap:8px;padding-inline:16px}.brand{width:116px}.theme-toggle{width:124px}.reading-main{padding-inline:16px}.reader-toolbar-title{font-size:var(--text-caption)}.reader-tools{gap:0}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}@media (forced-colors:active){.status-button[aria-pressed=true],.prepare-filter-row button[aria-pressed=true]{border-color:highlight}.token[data-lookup-active=true]{color:highlighttext;background:highlight}.bottomnav [aria-current=page]{text-decoration:underline}}.word-card h3,.prepare-card .word-card h3,.sheet .word-card h3{color:var(--accent);font-weight:var(--font-weight-heading);margin:0}.word-heading{align-items:center}.word-title{gap:10px}.word-card .ipa{line-height:var(--line-ui);margin:-4px 0 8px}.word-card .meaning{font-weight:var(--font-weight-heading)}.status-button,.prepare-answers .status-button{text-align:center;color:var(--status-color);background:var(--status-bg);justify-content:center}.status-button:hover:not(:disabled){background:var(--status-bg);color:var(--status-color)}.status-button[aria-pressed=true]:hover:not(:disabled){background:var(--color-accent-soft);color:var(--accent)}.status-dot{display:none}.status-button[aria-pressed=true],.answers .status-button[aria-pressed=true]{font-weight:var(--font-weight-heading)}.status-button[aria-pressed=true] .status-dot{align-items:center;font-size:1.25em;line-height:1;display:inline-flex}.sort-buttons{gap:8px;margin-top:8px;display:flex}.sort-buttons button{justify-content:center;align-items:center;gap:6px;min-width:58px;padding:10px;display:flex}.sort-buttons button[aria-pressed=true],.chapter-button[aria-current=page]{color:var(--accent);background:var(--color-accent-soft);border-color:var(--accent);box-shadow:inset 0 0 0 1px var(--accent)}.prepare-chapters{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.prepare-chapters>.ui-icon{color:var(--muted);margin-right:4px}.chapter-button{justify-content:center;align-items:center;gap:6px;min-width:56px;padding:8px 12px;display:flex}label,legend,summary{font-weight:var(--font-weight-label)}input,select,textarea{font-weight:var(--font-weight-body)}small{font-size:var(--text-caption);line-height:var(--line-ui)}.muted,.saved,.error,.ipa,.prepare-forms,.prepare-frequency,.prepare-tag,.filter-hint,.audio-message{line-height:var(--line-ui)}.reader{font-synthesis:none}.reader em,.reader i{font-style:italic}.reader strong,.reader b{font-weight:700}.filter-group{border:1px solid var(--line);background:var(--panel);border-radius:10px;min-width:0;margin:0;padding:8px 10px 10px}.filter-group legend{color:var(--muted);padding:0 5px;font-size:.75rem;line-height:1.3}.filter-group .prepare-filter-row,.filter-group .status-buttons{flex-wrap:wrap;gap:6px;display:flex}.filter-group .filter-chip{max-width:100%;min-height:36px;color:var(--ink);background:var(--soft);text-align:left;border:1px solid #0000;border-radius:6px;justify-content:center;align-items:center;gap:6px;padding:6px 9px;font-size:.8125rem;line-height:1.25;display:inline-flex}.filter-group .filter-chip[aria-pressed=true]{color:var(--accent);background:var(--color-accent-soft);border-color:var(--accent);box-shadow:none}.filter-count{background:currentColor;border-radius:5px;flex-shrink:0;min-width:1.5em;padding:2px 5px}@supports (color:color-mix(in lab, red, red)){.filter-count{background:color-mix(in srgb,currentColor 9%,transparent)}}.filter-count{font-variant-numeric:tabular-nums;text-align:center;font-size:.6875rem;line-height:1.1}.prepare-filters{gap:10px}.prepare-filters input{border-radius:8px;padding:10px 12px}.dictionary-controls{gap:12px}.vocabulary-summary{color:var(--muted);font-size:var(--text-caption);gap:8px;line-height:1.5;display:grid}.vocabulary-summary strong{font-weight:var(--font-weight-heading);color:var(--ink);font-variant-numeric:tabular-nums}.dictionary-summary{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:12px 0}.summary-line{flex-wrap:wrap;align-items:baseline;gap:5px 14px;display:flex}.summary-label{color:var(--ink);font-weight:var(--font-weight-label)}.summary-stat{flex-wrap:wrap;align-items:baseline;gap:4px;display:inline-flex}.summary-stat small{color:var(--muted);font-variant-numeric:tabular-nums;margin-left:2px;font-size:.75rem}.dictionary-search{gap:6px;display:grid}.dictionary-search label{font-size:var(--text-caption);color:var(--muted)}.search-row{align-items:center;gap:8px;display:flex}.search-row input{width:100%;min-width:0;padding:10px 12px}.search-row button{flex-shrink:0;font-size:.75rem}.knowledge-explanation{color:var(--muted);font-size:var(--text-caption);margin-top:8px}.knowledge-explanation summary{cursor:pointer;padding:6px 0}.knowledge-explanation p{margin-top:8px}@media (max-width:600px){.filter-group{padding:6px 8px 8px}.filter-group .filter-chip{min-height:36px;padding:6px 8px}.summary-line{column-gap:10px}.summary-label{flex-basis:100%}}.dictionary-results{gap:24px;display:grid}.dictionary-page[data-masked=true] :is(.filter-count,.result-count,.dictionary-row>span,.dictionary-pagination>p,.dictionary-results>.empty>span),.dictionary-page[data-initial=true] .dictionary-summary :is(strong,small),.estimate-skeleton>span{border-radius:5px;position:relative;overflow:hidden;color:#0000!important}.dictionary-page[data-masked=true] :is(.filter-count,.result-count,.dictionary-row>span,.dictionary-pagination>p,.dictionary-results>.empty>span):after,.dictionary-page[data-initial=true] .dictionary-summary :is(strong,small):after,.estimate-skeleton>span:after{content:"";border-radius:inherit;background:var(--soft);position:absolute;inset:0}.dictionary-page[data-loading=true] :is(.filter-count,.result-count,.dictionary-row>span,.dictionary-pagination>p,.dictionary-results>.empty>span):after,.dictionary-page[data-loading=true][data-initial=true] .dictionary-summary :is(strong,small):after,.dictionary-page[data-loading=true] .estimate-skeleton>span:after{background:linear-gradient(100deg,var(--soft) 25%,var(--line) 45%,var(--soft) 65%);background-size:250% 100%;animation:1.6s ease-in-out infinite dictionary-shimmer}.estimate-skeleton>span{height:1em;margin-top:10px;display:block}.estimate-skeleton>span:nth-child(2){width:35%;height:1.7em}.estimate-skeleton>span:last-child{width:80%}.dictionary-page[data-initial=true] .dictionary-summary :is(strong,small){min-width:1.5em;display:inline-block}@keyframes dictionary-shimmer{0%{background-position:100% 0}to{background-position:-100% 0}}@media (prefers-reduced-motion:reduce){.dictionary-page[data-loading=true] :after{animation:none!important}}@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-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}