.kd{--ink:#151617;--paper:#fff;--cream:#f5f2f0;--line:#e2ddd8;--muted:#5d5a57;--soft:#6f6b67;--viol:#c1b3ff;--viol-deep:#6a56a7;--night:#453473;--mist:#f7f5ff;--peach:#ffbe98;--peach-deep:#f09b6c;--lime:#f8ff98;--ok:#a8e6a3;--ok-soft:#e4f8e6;--err:#ff9d9d;--err-soft:#ffe3e3;z-index:400;background:var(--cream);color:var(--ink);flex-direction:column;font-family:Geist,Nunito,system-ui,sans-serif;line-height:1.4;display:flex;position:fixed;inset:0;overflow:hidden}.kd *,.kd :before,.kd :after{box-sizing:border-box}.kd button{color:inherit;cursor:pointer;font-family:inherit}.kd button:disabled{cursor:not-allowed}.kd :focus-visible{outline:3px solid var(--viol-deep);outline-offset:3px}.kd-center{justify-content:center;align-items:center}.kd-msg{background:var(--paper);border:2.5px solid var(--ink);box-shadow:5px 5px 0 var(--ink);border-radius:18px;flex-direction:column;align-items:center;gap:14px;padding:28px 32px;font-weight:700;display:flex}.kd-tr{color:var(--soft);margin-top:3px;font-size:.82em;font-weight:600;display:block}.kd-dots{letter-spacing:.3em;color:#cdc7c1;font-size:20px}.kd-muted{color:var(--muted);font-weight:600}.kd-eyebrow{letter-spacing:.12em;color:var(--viol-deep);font-size:12px;font-weight:900}body.kd-lesson-open [data-chat-fab],body.kd-lesson-open .dx-chat-fab,body.kd-lesson-open .dx-chat{display:none!important}.kd-icon-btn{background:var(--paper);border:2.5px solid var(--ink);width:40px;height:40px;box-shadow:3px 3px 0 var(--ink);color:var(--ink);border-radius:10px;flex:none;justify-content:center;align-items:center;text-decoration:none;transition:transform .16s cubic-bezier(.2,.9,.3,1.2),box-shadow .16s;display:inline-flex}.kd-icon-btn:hover{box-shadow:5px 5px 0 var(--ink);transform:translate(-2px,-2px)}.kd-icon-sm{width:34px;height:34px;box-shadow:none;border-width:2px}.kd-btn{border:2.5px solid var(--ink);background:var(--paper);min-height:48px;box-shadow:3px 3px 0 var(--ink);border-radius:12px;justify-content:center;align-items:center;gap:8px;padding:0 20px;font-size:15px;font-weight:800;transition:transform .16s cubic-bezier(.2,.9,.3,1.2),box-shadow .16s,background .16s;display:inline-flex}.kd-btn:hover:not(:disabled){box-shadow:5px 5px 0 var(--ink);transform:translate(-2px,-2px)}.kd-btn:active:not(:disabled){box-shadow:1px 1px 0 var(--ink);transform:translate(2px,2px)}.kd-btn:disabled{opacity:.45;box-shadow:none}.kd-btn-primary{background:var(--peach)}.kd-btn-primary:hover:not(:disabled){background:var(--peach-deep)}.kd-btn-ghost{box-shadow:none;border:2px solid #d6d1cc}.kd-btn-ghost:hover:not(:disabled){box-shadow:none;border-color:var(--ink);transform:none}.kd-top{background:var(--paper);border-bottom:2px solid var(--ink);flex:none;align-items:center;gap:20px;min-height:60px;padding:8px 24px;display:flex}.kd-top-left,.kd-top-right{flex:none;align-items:center;gap:12px;display:flex}.kd-level{background:var(--ok);border:2.5px solid var(--ink);border-radius:9px;padding:4px 8px;font-family:Archivo Black,sans-serif;font-size:13px}.kd-title{flex-direction:column;min-width:0;line-height:1.15;display:flex}.kd-title strong{font-family:Archivo Black,sans-serif;font-size:17px;font-weight:400}.kd-title span{color:var(--muted);white-space:nowrap;text-overflow:ellipsis;max-width:280px;font-size:12px;font-weight:600;overflow:hidden}.kd-chapters{flex:1;justify-content:center;align-items:center;gap:12px;min-width:0;display:flex}.kd-chapter-strip{gap:4px;display:flex}.kd-ch{background:var(--paper);color:#8a8580;border:1.5px solid #d6d1cc;border-radius:8px;width:30px;height:30px;padding:0;font-size:12px;font-weight:800}.kd-ch.is-done{background:var(--viol);border:2px solid var(--ink);color:var(--ink)}.kd-ch.is-current{background:var(--ink);border:2px solid var(--ink);color:#fff}.kd-ch.is-soon{opacity:.55}.kd-ch:not(:disabled):not(.is-current):hover{border-color:var(--ink);color:var(--ink)}.kd-chapter-name{color:#3a3836;white-space:nowrap;text-overflow:ellipsis;font-size:13px;font-weight:700;overflow:hidden}.kd-chapter-bar{display:none}.kd-tool{background:var(--paper);border:2px solid var(--ink);height:40px;box-shadow:2px 2px 0 var(--ink);border-radius:12px;align-items:center;gap:8px;padding:0 14px;font-size:14px;font-weight:800;transition:transform .16s cubic-bezier(.2,.9,.3,1.2),box-shadow .16s;display:flex}.kd-tool:hover{box-shadow:4px 4px 0 var(--ink);background:var(--lime);transform:translate(-2px,-2px)}.kd-count{background:var(--viol);border:1.5px solid var(--ink);border-radius:999px;padding:1px 7px;font-size:12px}.kd-head{flex:none;justify-content:space-between;align-items:center;gap:16px;padding:12px 24px;display:flex}.kd-head-text{flex-wrap:wrap;align-items:baseline;gap:4px 12px;min-width:0;display:flex}.kd-head h1{letter-spacing:-.01em;margin:0;font-family:Archivo Black,sans-serif;font-size:24px;font-weight:400;line-height:1.1}.kd-head-of{color:#a29d98}.kd-head-tr{color:var(--muted);font-size:15px;font-weight:600}.kd-pills{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:6px;display:flex}.kd-pill{background:var(--paper);height:32px;color:var(--muted);border:1.5px solid #d6d1cc;border-radius:999px;padding:0 12px;font-size:13px;font-weight:700}.kd-pill.is-seen{border-color:var(--viol-deep);color:var(--ink)}.kd-pill.is-current{background:var(--ink);border-color:var(--ink);color:#fff;font-weight:800}.kd-pill-practice{border-style:dashed;border-color:#b9b2ab}.kd-dot{background:var(--paper);color:#8a8580;border:1.5px solid #d6d1cc;border-radius:9px;width:32px;height:32px;padding:0;font-size:13px;font-weight:800}.kd-dot.is-right{background:var(--ok);border:2px solid var(--ink);color:var(--ink)}.kd-dot.is-helped{background:var(--lime);border:2px solid var(--ink);color:var(--ink)}.kd-dot.is-current{background:var(--ink);border:2px solid var(--ink);color:#fff}.kd-stage{flex:1;min-height:0;padding:0 24px 12px;display:flex}.kd-board{background:var(--paper);border:1.5px solid var(--line);scrollbar-width:thin;scrollbar-color:var(--line) transparent;border-radius:20px;flex:1;min-height:0;padding:24px 28px;position:relative;overflow-y:auto}.kd-note{background:var(--mist);border:1.5px dashed var(--viol);color:var(--viol-deep);border-radius:12px;margin:0 0 18px;padding:10px 14px;font-size:13.5px;font-weight:700}.kd-board-grid{grid-template-columns:repeat(2,minmax(0,1fr));align-items:start;gap:20px 22px;display:grid}.kd-block{grid-column:1/-1;min-width:0}.kd-block.kd-half{grid-column:auto}.is-off{transition:all .3s}.is-on{animation:.35s cubic-bezier(.2,.9,.3,1.2) kd-in}@keyframes kd-in{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}@media (prefers-reduced-motion:reduce){.is-on{animation:none}}.kd-cases{grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;display:grid}.kd-case{border-radius:16px;flex-direction:column;justify-content:center;gap:4px;min-height:112px;padding:16px 18px;transition:all .3s;display:flex;position:relative}.kd-case.is-off{border:2px dashed var(--line);background:#faf8f6;align-items:center}.kd-case.is-on{border:2px solid var(--line);background:#faf8f6}.kd-case.is-focus{background:var(--mist);border:2.5px solid var(--ink)}.kd-case.is-active{border:2.5px solid var(--ink);box-shadow:4px 4px 0 var(--ink);background:var(--paper);transform:translate(-2px,-2px)}.kd-case-name{font-family:Archivo Black,sans-serif;font-size:24px;line-height:1.05}.kd-case-badge{background:var(--viol);border:2px solid var(--ink);border-radius:999px;padding:3px 9px;font-family:Archivo Black,sans-serif;font-size:13px;position:absolute;top:10px;right:12px}.kd-rule-slot,.kd-transform-slot{min-height:0}.kd-rule{background:var(--lime);border:2px solid var(--ink);border-radius:14px;flex-wrap:wrap;align-items:center;gap:6px 14px;padding:12px 18px;display:inline-flex}.kd-rule.is-active{box-shadow:4px 4px 0 var(--ink);border-width:2.5px}.kd-rule-tag{letter-spacing:.12em;color:var(--viol-deep);font-size:11px;font-weight:900}.kd-rule-de{font-family:Archivo Black,sans-serif;font-size:20px}.kd-rule .kd-tr{margin:0;font-size:14px}.kd-chips{flex-wrap:wrap;gap:12px;display:flex}.kd-chip{border-radius:16px;min-width:180px;padding:12px 16px;font-size:17px;font-weight:800;transition:all .3s}.kd-chip.is-off{text-align:center;border:2px dashed var(--line);background:#faf8f6}.kd-chip.is-on{border:2px solid var(--line);background:#faf8f6}.kd-chip-subj.is-on{border-color:var(--viol);background:#ede8ff}.kd-chip-obj.is-on{background:#efebe7;border-color:#d6d1cc}.kd-chip-dat.is-on{background:#fff1d6;border-color:#f0c27a}.kd-chip.is-active{border:2.5px solid var(--ink);box-shadow:3px 3px 0 var(--ink)}.kd-chip .kd-tr{font-size:13px}.kd-swatch{vertical-align:-3px;border:1.5px solid var(--ink);border-radius:999px;width:18px;height:18px;margin-right:8px;display:inline-block}.kd-contrast{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;display:grid}.kd-contrast-card{border-radius:18px;flex-direction:column;justify-content:center;gap:10px;min-height:150px;padding:22px 24px;transition:all .35s;display:flex}.kd-contrast-card.is-off{border:2px dashed var(--line);background:#faf8f6;align-items:center}.kd-contrast-card.is-on{background:var(--paper);border:2px solid var(--line)}.kd-contrast-card.is-active{border:2.5px solid var(--ink);box-shadow:5px 5px 0 var(--ink);transform:translate(-2px,-2px)}.kd-contrast-card.is-dim{opacity:.6}.kd-sentence{font-size:26px;font-weight:800;line-height:1.35}.kd-mark{border-radius:8px;padding:1px 8px}.kd-contrast-meta{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.kd-role{border:1.5px solid var(--ink);border-radius:12px;flex-direction:column;padding:7px 12px;font-size:14px;font-weight:800;display:inline-flex}.kd-role .kd-tr{margin:0;font-size:12px}.kd-role-subj{background:#ede8ff}.kd-role-obj{background:#efebe7}.kd-role-dat{background:#fff1d6}.kd-role-plain{background:#f1f3f5}.kd-role.is-active{box-shadow:3px 3px 0 var(--ink)}.kd-case-label{background:var(--mist);border:1.5px dashed var(--viol-deep);color:var(--viol-deep);border-radius:8px;padding:6px 10px;font-family:Fira Code,ui-monospace,monospace;font-size:13px}.kd-case-label.is-active{background:var(--viol);color:var(--ink);border-style:solid}.kd-transform{background:var(--paper);border:2px solid var(--line);border-radius:16px;flex-wrap:wrap;align-items:center;gap:12px 16px;padding:12px 20px;display:inline-flex}.kd-transform.is-active{border:2.5px solid var(--ink);box-shadow:4px 4px 0 var(--ink)}.kd-transform-from,.kd-transform-to{background:#d6ecff;border:2px solid #4dabf7;border-radius:12px;padding:2px 14px;font-family:Archivo Black,sans-serif;font-size:34px}.kd-transform-to{background:#efebe7;border-color:#b9b2ab}.kd-transform .kd-tr{margin:0;font-size:14px}.kd-dict{border:2px solid var(--line);background:#fffdf6;border-radius:18px;flex-direction:column;gap:10px;padding:18px 20px;display:flex}.kd-dict-head{color:var(--soft);align-items:baseline;gap:10px;font-family:Fira Code,ui-monospace,monospace;font-size:13px;display:flex}.kd-dict-head .kd-tr{margin:0}.kd-dict-row{border-radius:12px;align-items:center;gap:12px;min-height:52px;padding:8px 14px;transition:all .3s;display:flex}.kd-dict-row.is-off{border:2px dashed #ece8e4}.kd-dict-row.is-on{border:1.5px solid var(--line);background:var(--paper)}.kd-dict-row.is-active{border:2.5px solid var(--ink);box-shadow:3px 3px 0 var(--ink)}.kd-dict-word{font-size:24px;font-weight:800}.kd-dict-pl{color:var(--muted);background:#ffe6d6;border:1.5px solid #f09b6c;border-radius:8px;margin-left:auto;padding:2px 10px;font-size:16px;font-weight:700}.kd-art{border:2px solid;border-radius:8px;padding:3px 10px;font-family:Archivo Black,sans-serif;font-size:16px;display:inline-block}.kd-dict .kd-art{font-size:20px}.kd-forms{background:var(--paper);border:2px solid var(--line);border-radius:18px;flex-direction:column;gap:12px;padding:18px 20px;display:flex}.kd-chips-title{opacity:.8;flex-basis:100%;align-items:baseline;gap:10px;font-size:13px;font-weight:800;display:flex}.kd-chips-title .kd-tr{margin:0}.kd-forms-head{align-items:baseline;gap:10px;font-size:14px;font-weight:800;display:flex}.kd-forms-head .kd-tr{margin:0}.kd-forms-list{flex-wrap:wrap;gap:10px;display:flex}.kd-form{border:2px solid;border-radius:12px;padding:8px 14px;font-size:20px;font-weight:800}.kd-form.is-off{color:#cdc7c1;letter-spacing:.2em;border:2px dashed #ece8e4;font-weight:600}.kd-form.is-active{box-shadow:3px 3px 0 var(--ink)}.kd-forms-badge{background:var(--viol);border:2px solid var(--ink);border-radius:999px;align-self:flex-start;padding:6px 14px;font-family:Archivo Black,sans-serif;font-size:18px}.kd-forms-badge.is-active{box-shadow:3px 3px 0 var(--ink)}.kd-sentences{grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;display:grid}.kd-sentence-card{border-radius:16px;flex-direction:column;justify-content:center;min-height:96px;padding:16px 18px;transition:all .3s;display:flex}.kd-sentence-card.is-off{border:2px dashed var(--line);background:#faf8f6;align-items:center}.kd-sentence-card.is-on{border:1.5px solid var(--line);background:var(--paper)}.kd-sentence-card.is-active{border:2.5px solid var(--ink);box-shadow:4px 4px 0 var(--ink)}.kd-sentence-card .kd-sentence{font-size:20px}.kd-check{flex-direction:column;gap:12px;margin:0;padding:0;list-style:none;display:flex}.kd-check-item{border-radius:16px;align-items:center;gap:14px;min-height:64px;padding:12px 18px;transition:all .3s;display:flex}.kd-check-item.is-off{border:2px dashed var(--line);background:#faf8f6}.kd-check-item.is-on{border:1.5px solid var(--line);background:var(--paper)}.kd-check-item.is-active{border:2.5px solid var(--ink);box-shadow:4px 4px 0 var(--ink)}.kd-check-box{border:2px solid var(--ink);background:var(--ok);border-radius:9px;flex:none;justify-content:center;align-items:center;width:30px;height:30px;font-weight:900;display:flex}.kd-check-item.is-off .kd-check-box{background:var(--paper);border-color:#d6d1cc}.kd-check-text{font-size:19px;font-weight:800}.kd-end{background:var(--mist);border:2.5px solid var(--ink);border-radius:18px;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;margin-top:22px;padding:18px 22px;display:flex}.kd-end strong{font-family:Archivo Black,sans-serif;font-size:20px;font-weight:400;display:block}.kd-end span{color:var(--muted);font-size:15px;font-weight:600}.kd-end-actions{flex-wrap:wrap;gap:10px;display:flex}.kd-dock{background:var(--night);color:#fff;border:2.5px solid var(--ink);box-shadow:4px 4px 0 var(--ink);border-radius:20px;flex-direction:column;flex:none;gap:4px;margin:0 24px 16px;padding:8px 16px 12px;display:flex}.kd-captions{text-align:center;flex-direction:column;justify-content:center;align-items:center;gap:4px;min-width:0;min-height:64px;padding:0 16px;display:flex}.kd-cap-de{text-wrap:balance;max-width:1040px;margin:0;font-size:22px;font-weight:700;line-height:1.4}.kd-word{cursor:pointer;border-radius:6px;margin:0 -2px;padding:0 2px;transition:background .12s,color .12s}.kd-word.is-next{color:#ffffff8c}.kd-word.is-now{background:var(--lime);color:var(--ink)}.kd-cap-tr{color:#d9d0ff;text-wrap:balance;max-width:1040px;margin:0;font-size:16px;font-weight:600}.kd-cap-off{color:#b8acee;margin:0;font-size:14px;font-weight:600}.kd-dock-row{grid-template-columns:minmax(176px,1fr) minmax(0,4fr) minmax(176px,1fr);align-items:center;gap:16px;display:grid}.kd-controls{justify-self:start;align-items:center;gap:8px;display:flex}.kd-dock-side{justify-self:end;align-items:center;gap:12px;display:flex}.kd-ctl{background:0 0;border:2px solid #ffffff59;border-radius:12px;flex:none;justify-content:center;align-items:center;width:40px;height:40px;display:flex;color:#fff!important}.kd-ctl:hover{border-color:#fff}.kd-play{background:var(--peach);border:2.5px solid var(--ink);width:48px;height:48px;box-shadow:3px 3px 0 var(--ink);border-radius:999px;flex:none;justify-content:center;align-items:center;display:flex;color:var(--ink)!important}.kd-play:disabled{opacity:.45;box-shadow:none}.kd-voice{text-align:right;flex-direction:column;flex:none;display:flex}.kd-voice strong{font-size:13px}.kd-voice span{color:#b8acee;font-size:12px;font-weight:600}.kd-progress{flex:1;align-items:center;gap:12px;min-width:0;display:flex}.kd-scrub{background:0 0;border:none;flex:1;height:20px;padding:0;position:relative}.kd-scrub-track,.kd-scrub-fill{border-radius:999px;height:6px;position:absolute;top:7px;left:0}.kd-scrub-track{background:#fff3;right:0}.kd-scrub-fill{background:var(--peach)}.kd-scrub-tick{background:#ffffff80;width:2px;height:12px;position:absolute;top:4px}.kd-time{font-variant-numeric:tabular-nums;white-space:nowrap;font-size:13px;font-weight:700}.kd-sub-wrap{flex:none;position:relative}.kd-sub-btn{background:0 0;border:2px solid #ffffff59;border-radius:12px;align-items:center;gap:8px;height:40px;padding:0 14px;font-size:13px;font-weight:800;display:flex;color:#fff!important}.kd-sub-btn[aria-expanded=true],.kd-sub-btn:hover{background:#fff;border-color:#fff;color:var(--ink)!important}.kd-scrim{z-index:1;cursor:default;background:0 0;border:none;position:fixed;inset:0}.kd-sub-panel{z-index:2;width:320px;max-height:min(70vh,520px);color:var(--ink);background:var(--paper);border:2.5px solid var(--ink);box-shadow:5px 5px 0 var(--ink);border-radius:16px;position:absolute;bottom:56px;right:0;overflow:auto}.kd-sub-head{border-bottom:1.5px solid var(--line);justify-content:space-between;align-items:center;padding:12px 14px 10px 16px;display:flex}.kd-sub-section{border-bottom:1.5px solid var(--line);flex-direction:column;gap:10px;padding:12px 16px;display:flex}.kd-sub-section:last-child{border-bottom:none}.kd-sub-row{justify-content:space-between;align-items:center;gap:12px;display:flex}.kd-sub-row 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