[data-screen=home] .langOpt{display:flex;align-items:center;justify-content:space-between;width:100%;border:none;background:none;cursor:pointer;font-family:inherit;font-size:13px;font-weight:600;color:#1a1a2e;padding:0 10px;min-height:36px;line-height:1.15;border-radius:9px;text-align:left}[data-screen=home] .langOpt:hover{background:#f3f5f7}[data-screen=home] .langMenu::-webkit-scrollbar{width:0}[data-screen=home] .tr[dir=rtl]{text-align:right}[data-screen=quiz] .tw{cursor:pointer;border-bottom:1px dotted #c6cfcc}[data-screen=quiz] .hl{background:#d4f4e4;color:#047857;border-radius:4px;padding:0 1px;box-decoration-break:clone;-webkit-box-decoration-break:clone;border-bottom-color:transparent}[data-screen=quiz] .rw-on{background:#ff4d4d;color:#fff;border-radius:4px;box-shadow:0 0 0 1px #ff4d4d59;transition:background .08s}[data-screen=quiz] .read{background:#eafaf2!important;border-color:#34d399!important}[data-screen=quiz] .read-opt{box-shadow:0 0 0 2px #34d399,0 2px 12px #34d3994d!important}[data-screen=quiz] .nav-btn{width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:transform .08s ease,background .15s ease;flex-shrink:0}[data-screen=quiz] .nav-btn:active{transform:scale(.9)}[data-screen=quiz] .nav-back{border:1.5px solid #d6dbe0;background:#fff}[data-screen=quiz] .nav-back:hover{background:#f5f7f9}[data-screen=quiz] .nav-next{border:none;background:#34d399;box-shadow:0 4px 14px #34d39952}[data-screen=quiz] .nav-next:hover{background:#2bc48a}[data-screen=quiz] .hdr-back{width:30px;height:30px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;border:none;background:#f4f6f7;flex-shrink:0;transition:background .15s,transform .08s;padding:0}[data-screen=quiz] .hdr-back:hover{background:#e9edee}[data-screen=quiz] .hdr-back:active{transform:scale(.9)}[data-screen=quiz] .wbtn{display:flex;flex-direction:row;align-items:center;gap:3px;border:none;background:none;cursor:pointer;font-family:inherit;padding:4px 7px;border-radius:8px}[data-screen=quiz] .wbtn:hover{background:#f5f7f9}[data-screen=quiz] .wbtn span{font-size:11.5px;color:#3a3a4a;font-weight:600;white-space:nowrap}[data-screen=quiz] .wsep{width:1px;height:16px;background:#eef0f0;flex-shrink:0}[data-screen=quiz] .langOpt{display:flex;align-items:center;justify-content:space-between;gap:10px;width:100%;border:none;background:none;cursor:pointer;font-family:inherit;font-size:12.5px;font-weight:600;color:#1a1a2e;padding:0 10px;min-height:36px;line-height:1.15;border-radius:9px;text-align:left}[data-screen=quiz] .langOpt:hover{background:#f3f5f7}[data-screen=quiz] [data-el=langMenu]::-webkit-scrollbar{width:0}[data-screen=textbook] .tw{cursor:pointer;border-bottom:1px dotted #c6cfcc}[data-screen=textbook] .hl{background:#d4f4e4;color:#047857;border-radius:4px;padding:0 1px;box-decoration-break:clone;-webkit-box-decoration-break:clone;border-bottom-color:transparent}[data-screen=textbook] .rw-on{background:#d4f4e4;color:#047857;border-radius:4px;transition:background .08s}[data-screen=textbook] .nav-btn{width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:transform .08s ease,background .15s ease;flex-shrink:0}[data-screen=textbook] .nav-btn:active{transform:scale(.9)}[data-screen=textbook] .nav-back{border:1.5px solid #d6dbe0;background:#fff}[data-screen=textbook] .nav-back:hover{background:#f5f7f9}[data-screen=textbook] .nav-next{border:none;background:#34d399;box-shadow:0 4px 14px #34d39952}[data-screen=textbook] .nav-next:hover{background:#2bc48a}[data-screen=textbook] .hdr-back{width:30px;height:30px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;border:none;background:#f4f6f7;flex-shrink:0;transition:background .15s,transform .08s;padding:0}[data-screen=textbook] .hdr-back:hover{background:#e9edee}[data-screen=textbook] .hdr-back:active{transform:scale(.9)}[data-screen=textbook] .wbtn{display:flex;flex-direction:row;align-items:center;gap:3px;border:none;background:none;cursor:pointer;font-family:inherit;padding:4px 7px;border-radius:8px}[data-screen=textbook] .wbtn:hover{background:#f5f7f9}[data-screen=textbook] .wbtn span{font-size:11.5px;color:#3a3a4a;font-weight:600;white-space:nowrap}[data-screen=textbook] .wsep{width:1px;height:16px;background:#eef0f0;flex-shrink:0}[data-screen=textbook] .langOpt{display:flex;align-items:center;justify-content:space-between;gap:10px;width:100%;border:none;background:none;cursor:pointer;font-family:inherit;font-size:12.5px;font-weight:600;color:#1a1a2e;padding:0 10px;min-height:36px;line-height:1.15;border-radius:9px;text-align:left}[data-screen=textbook] .langOpt:hover{background:#f3f5f7}[data-screen=textbook] [data-el=langMenu]::-webkit-scrollbar{width:0}[data-screen=textbook] p.en{margin:0;font-size:15px;line-height:1.62;color:#2b2f3a}[data-screen=textbook] p.ru{margin:5px 0 0;font-size:12px;line-height:1.5;color:#a3a8af}[data-screen=textbook] .scroll::-webkit-scrollbar{width:0}[data-screen=textbook] .figchip{background:#fff;border:1px solid #e6e9ea;border-radius:7px;padding:5px 7px;font-size:10px;font-weight:600;color:#3a3a4a;text-align:center}[data-screen=textbook] .figchip-tr{font-size:8.5px;font-weight:600;color:#a3a8af;margin-top:2px;line-height:1.2}[data-screen=term] .tw{cursor:pointer}[data-screen=term] .hl{background:#d4f4e4;color:#047857;border-radius:4px;padding:0 2px;border-bottom:1px dotted transparent}[data-screen=term] .grade{flex:1;border-radius:12px;padding:11px 4px;font-family:inherit;font-size:13px;font-weight:700;cursor:pointer;transition:transform .08s,background .15s;display:flex;align-items:center;justify-content:center;gap:5px}[data-screen=term] .grade:active{transform:scale(.95)}[data-screen=term] .nav-arrow{width:32px;height:32px;border-radius:50%;border:1.5px solid #e3e7e9;background:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:transform .08s,background .15s}[data-screen=term] .nav-arrow:active{transform:scale(.9)}[data-screen=term] .nav-arrow:hover{background:#f5f7f9}[data-screen=math] .ru-badge{display:inline-flex;align-items:center;font-size:8.5px;font-weight:800;letter-spacing:.04em;color:#047857;background:#34d39924;border-radius:4px;padding:1px 5px;margin-right:6px;vertical-align:middle;position:relative;top:-1px}[data-screen=math] .mono{font-variant-numeric:tabular-nums}[data-screen=math] .langOpt{display:flex;align-items:center;justify-content:space-between;gap:10px;width:100%;border:none;background:none;cursor:pointer;font-family:inherit;font-size:12.5px;font-weight:600;color:#1a1a2e;padding:0 10px;min-height:36px;line-height:1.15;border-radius:9px;text-align:left}[data-screen=math] .langOpt:hover{background:#f3f5f7}[data-screen=math] [data-el=langMenu]::-webkit-scrollbar{width:0}[data-screen=math] .body-scroll::-webkit-scrollbar{width:0}[data-screen=math] .step-cap{font-size:11.5px;color:#8a909a;line-height:1.35;margin:5px 0 0 34px}[data-screen=math] .hopdot{position:absolute;width:9px;height:9px;border-radius:50%;background:#f5b301;top:6px;left:16px;opacity:0}[data-screen=math] .conv.play .hopdot{animation:math-hop 1.5s ease-in-out forwards}@keyframes math-hop{0%{left:20px;top:6px;opacity:0}8%{opacity:1}25%{left:52px;top:-8px}42%{left:84px;top:6px}58%{left:84px;top:-8px}75%{left:116px;top:6px}92%{opacity:1}to{left:116px;top:6px;opacity:0}}[data-screen=math] .conv.play .conv-to{animation:math-pop 1.5s ease forwards}@keyframes math-pop{0%,55%{color:#c0c5c9;transform:scale(.96)}78%{color:#047857;transform:scale(1.08)}to{color:#047857;transform:scale(1)}}