:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--paper:#f5f7f8;--surface:#fff;--ink:#222b2b;--muted:#647275;--line:#dee5e7;--line-strong:#bcc9cb;--jade:#176b58;--jade-soft:#e8f3ee;--cinnabar:#b8402d;--cinnabar-soft:#f8e7e1;--blue:#2f5d8c;--gold:#a47720;--gold-soft:#fff3cf;--shadow:0 4px 16px #222b2b0f;font-family:Microsoft YaHei,PingFang SC,Segoe UI,sans-serif;font-size:15px;line-height:1.55}*{box-sizing:border-box}html,body,#app{min-height:100%}body{background:var(--paper);color:var(--ink);margin:0}.login-screen{place-items:center;min-height:100vh;padding:24px;display:grid}.login-panel{border:1px solid var(--line);width:min(420px,100%);box-shadow:var(--shadow);background:#ffffffeb;border-radius:8px;padding:28px}.login-brand{margin-bottom:26px}.login-form{gap:10px;display:grid}.login-form label{color:var(--muted);font-size:14px}.login-form input{border:1px solid var(--line);background:var(--surface);min-height:46px;color:var(--ink);border-radius:6px;padding:0 12px}.inline-toast{background:var(--cinnabar-soft);color:var(--cinnabar);border-radius:6px;margin-top:14px;padding:10px 12px}button,input,textarea{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:2px solid var(--jade);outline-offset:3px}button,select{touch-action:manipulation}.app-shell{grid-template-columns:224px minmax(0,1fr);min-height:100vh;display:grid}.side-nav{background:var(--surface);border-right:1px solid var(--line);flex-direction:column;gap:30px;height:100vh;padding:28px 16px 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input{opacity:0;pointer-events:none;width:1px;height:1px;position:absolute}.cleanup-switch{background:#dfe5e2;border:1px solid #aeb8b4;border-radius:11px;flex:0 0 38px;width:38px;height:22px;transition:background .16s,border-color .16s;position:relative}.cleanup-switch:after{content:"";background:#fff;border-radius:50%;width:16px;height:16px;transition:transform .16s;position:absolute;top:2px;left:2px;box-shadow:0 1px 3px #1f25233d}.session-cleanup-control input:checked+.cleanup-switch{border-color:var(--jade);background:var(--jade)}.session-cleanup-control input:checked+.cleanup-switch:after{transform:translate(16px)}.session-cleanup-control input:focus-visible+.cleanup-switch{outline-offset:2px;outline:3px solid #00775b33}.cleanup-setting-copy{gap:1px;min-width:0;line-height:1.2;display:grid}.cleanup-setting-copy strong{font-size:14px;font-weight:650}.cleanup-setting-copy 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auto;align-items:center;gap:12px;padding:16px;text-decoration:none;transition:border-color .16s,box-shadow .16s,transform .16s;display:grid}.folder-entry:hover{border-color:var(--jade);box-shadow:var(--shadow)}.folder-entry-icon{background:var(--jade-soft);width:44px;height:44px;color:var(--jade);border:1px solid #d4eadf;border-radius:8px;place-items:center;display:grid}.folder-entry-icon svg,.folder-entry>svg{width:18px;height:18px}.folder-entry-main{gap:5px;min-width:0;display:grid}.folder-entry-main strong{text-overflow:ellipsis;white-space:nowrap;font-size:17px;overflow:hidden}.folder-entry-main small,.folder-entry-meta{color:var(--muted);font-size:13px}.folder-section{gap:12px;display:grid}.folder-heading{border:1px solid var(--line);background:#ffffffd1;border-radius:8px;justify-content:space-between;align-items:flex-start;gap:12px;padding:12px;display:flex}.folder-heading h3{align-items:center;gap:8px;margin:0;font-size:18px;display:flex}.folder-heading h3 svg,.folder-badge svg,.folder-chip svg{width:16px;height:16px}.folder-heading span{color:var(--muted);margin-top:4px;font-size:13px;display:block}.folder-actions{flex-wrap:wrap;justify-content:flex-end;gap:8px;display:flex}.folder-badge{border:1px solid var(--line);width:-moz-fit-content;width:fit-content;color:var(--muted);border-radius:999px;align-items:center;gap:5px;padding:4px 8px;font-size:12px;display:inline-flex}.lesson-title{color:var(--ink);font-size:20px;font-weight:700;text-decoration:none}.lesson-counts,.progress-row{color:var(--muted);gap:6px;font-size:14px;display:grid}.row-meta{color:var(--muted);flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:6px;font-size:14px;display:flex}.progress-track i{background:var(--jade);height:100%;display:block}.toolbar-band{flex-wrap:wrap;gap:10px;display:flex}.action-button,.small-button{border:1px solid 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var(--jade)}.wrong-lesson-option input{opacity:0;pointer-events:none;position:absolute}.wrong-lesson-checkmark{border:1px solid var(--line-strong);color:#0000;background:#fff;border-radius:5px;place-items:center;width:26px;height:26px;display:grid}.wrong-lesson-checkmark svg{width:16px;height:16px}.wrong-lesson-option input:checked+.wrong-lesson-checkmark{border-color:var(--jade);background:var(--jade);color:#fff}.wrong-lesson-option-main,.wrong-lesson-option-meta{gap:3px;min-width:0;display:grid}.wrong-lesson-option-main strong{overflow-wrap:anywhere;font-size:15px}.wrong-lesson-option-main small,.wrong-lesson-option-meta small{color:var(--muted);font-size:12px}.wrong-lesson-option-meta{white-space:nowrap;justify-items:end}.wrong-lesson-option-meta b{color:var(--cinnabar);font-size:13px}.wrong-count-controls{grid-template-columns:minmax(80px,1fr) minmax(80px,1fr);gap:8px;display:grid}.wrong-count-controls .compact-select{width:100%;max-width:none;min-height:42px}.wrong-count-controls .compact-select:disabled{opacity:.48;cursor:not-allowed}.wrong-filter-start{white-space:nowrap;min-height:42px}.wrong-lesson-card{min-height:150px}.wrong-view-link{color:inherit;text-decoration:none}.wrong-reader-head{border-bottom:1px solid var(--line-strong);grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:18px;max-width:1120px;padding-bottom:16px;display:grid}.wrong-reader-head p,.wrong-reader-head h2{margin:0}.wrong-reader-head p{color:var(--muted);margin-bottom:3px;font-size:13px}.wrong-reader-head h2{font-size:30px}.wrong-reader-stats{align-items:center;gap:8px;max-width:1120px;min-height:54px;display:flex}.wrong-reader-sheet{border-top:1px solid var(--line);max-width:1120px}.wrong-reader-word{border-bottom:1px solid var(--line);align-items:center;gap:14px;min-height:84px;display:flex}.wrong-reader-word span{background:var(--cinnabar-soft);color:var(--cinnabar);border-radius:6px;padding:5px 8px;font-size:13px;font-weight:700}.wrong-reader-word 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#d3a42c;padding-left:10px;padding-right:10px}.reader-meaning-heading{flex-wrap:wrap;justify-content:space-between;align-items:flex-start;gap:8px;margin-bottom:8px;display:flex}.reader-meaning-heading h3{overflow-wrap:anywhere;flex:100px;min-width:0}.reader-other-meanings summary{cursor:pointer;color:var(--muted);padding:16px 0}.wrong-reader-item>b{background:var(--ink);color:#fff;border-radius:50%;place-items:center;width:32px;height:32px;display:grid}.wrong-reader-item h3,.wrong-reader-item p{margin:0}.wrong-reader-item h3{margin-bottom:8px;font-size:20px}.wrong-reader-item p{line-height:1.7}.wrong-reader-item small{color:var(--muted);margin-top:6px;display:block}.wrong-reader-explanation{border-left:3px solid var(--line-strong);color:var(--muted);margin-top:10px;padding-left:12px;line-height:1.65}.card-reader-nav{grid-template-columns:minmax(120px,1fr) auto minmax(120px,1fr);align-items:center;gap:12px;max-width:1120px;padding-top:18px;display:grid}.card-reader-nav>:first-child{justify-self:start}.card-reader-nav>:last-child{justify-self:end}.card-reader-nav>span{color:var(--muted);font-variant-numeric:tabular-nums;text-align:center}.action-button.primary,.small-button.primary{background:var(--jade);border-color:var(--jade);color:#fff}.action-button.repair{color:#5e4a08;background:#fff8e6;border-color:#e2c36b}.action-button.danger-soft,.small-button.danger-soft,.status.bad{background:var(--cinnabar-soft);color:var(--cinnabar);border-color:#efc0b5}.action-button:disabled,.small-button:disabled{cursor:not-allowed;opacity:.55}textarea:disabled{cursor:wait;opacity:.72}.split-lists{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;display:grid}.split-lists.with-supplement{grid-template-columns:repeat(3,minmax(0,1fr));align-items:start}.lesson-practice-toolbar{border-bottom:1px solid var(--line);gap:10px;margin-bottom:24px;padding-bottom:22px}.lesson-practice-toolbar .action-button{min-height:44px;padding:10px 14px;font-size:14px}.with-supplement>.card-list{min-width:0}.with-supplement .section-head,.lesson-supplement>summary{min-height:44px;margin:0 0 12px}.with-supplement .section-head h2,.lesson-supplement>summary{font-size:18px}.with-supplement .section-head>span{white-space:nowrap;color:var(--muted);font-size:13px}.with-supplement .lesson-word-row{grid-template-columns:minmax(0,1fr);gap:6px;padding:12px 14px;transition:border-color .15s,background .15s}.lesson-word-row .row-main{justify-content:space-between;align-items:center;gap:16px;min-height:28px;display:flex}.lesson-word-row .row-main>span{font-size:20px;line-height:1.4}.lesson-word-row .row-main>small{white-space:nowrap;flex-shrink:0;align-items:center;gap:4px;font-size:12px;display:inline-flex}.lesson-word-row .row-main>small svg{width:14px;height:14px}.lesson-word-row .row-meta{border-top:1px solid 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