.sf-b{max-width:600px;margin-inline:auto}.sf-b .sf-modebar[hidden]{display:none}.sf-b .sf-modebar:not([hidden]){display:flex;align-items:center;justify-content:space-between;gap:8px 12px;flex-wrap:wrap;margin:0 0 12px;padding:6px 8px 6px 12px;border:1px solid #E8DED1;border-radius:12px;background:var(--white)}.sf-b .sf-mode-chip{font:650 14px/1.5 var(--fa);color:var(--ink)}.sf-b .sf-top{margin-bottom:12px}.sf-b-stagewrap{position:relative;margin-bottom:0}.sf-b .sf-stage{padding:56px 24px 60px;min-height:0;aspect-ratio:16/8}.sf-b .sf-stage-foot{inset:14px 16px auto}.sf-b .sf-wave-big{display:none}.sf-ringwrap{position:absolute;z-index:2;inset-inline-start:50%;bottom:-62px;transform:translate(50%);width:124px;height:124px;display:grid;place-items:center;border-radius:50%;background:#f8f3ec}html[dir=rtl] .sf-ringwrap{transform:translate(50%)}.sf-ring{position:absolute;inset:0;width:124px;height:124px;transform:rotate(-90deg)}.sf-ring circle{fill:none;stroke-width:6}.sf-ring .trk{stroke:var(--line)}.sf-ring .arc{stroke-linecap:round;stroke-dasharray:100;stroke-dashoffset:calc(var(--p) * 100);opacity:0}.sf[data-phase=listening] .sf-ring .trk{stroke:var(--listen-line)}.sf[data-phase=listening] .sf-ring .arc{stroke:var(--listen);opacity:1}.sf[data-phase=repeat] .sf-ring .trk{stroke:var(--action-line)}.sf[data-phase=repeat] .sf-ring .arc{stroke:var(--action);opacity:1}.sf-ringbtn{position:relative;width:92px;height:92px;border-radius:50%;border:0;background:var(--action);color:#fff;display:grid;place-items:center;cursor:pointer;box-shadow:0 12px 26px -8px #d2461c99;transition:background-color .15s,transform .05s}.sf-ringbtn:hover{background:var(--action-hi)}.sf-ringbtn:active{transform:scale(.97)}.sf-ringbtn .i{width:38px;height:38px}.sf[data-phase=listening][data-paused="0"] .sf-ringbtn{background:var(--white);color:var(--ink);box-shadow:0 0 0 1px #a7b4ba}.sf[data-phase=listening][data-paused="0"] .sf-ringbtn:hover{background:var(--nav-soft)}.sf[data-phase=next] .sf-ringbtn .i,.sf[data-phase=done][data-last-ses="0"] .sf-ringbtn .i{transform:scaleX(-1)}.sf-ringlabel{position:absolute;top:calc(100% + 4px);inset-inline-start:50%;transform:translate(50%);white-space:nowrap;font:700 17px/1.6 var(--fa);color:var(--ink)}.sf-b .sf-say{justify-items:center;text-align:center;margin:0 0 14px}.sf-b .sf-steps,.sf-b .sf-sentence{margin-top:14px}.sf-b .sf-think,.sf-b .sf-hint-link{display:none}.sf-b[data-mode=challenge] .sf-fa{filter:none!important}.sf-b[data-mode=challenge] .sf-fa-row .tr-pin{display:none}.sf-b[data-mode=challenge][data-phase=think] .sf-en,.sf-b[data-mode=challenge] .sf-list li:not([data-state=done]) .e{filter:blur(7px);user-select:none;pointer-events:none}.sf-b[data-mode=challenge]:is([data-phase=listening],[data-phase=repeat],[data-phase=next],[data-phase=done]) .sf-list li[data-cur] .e{filter:none;user-select:auto;pointer-events:auto}@media(max-width:780px){.sf-b-stagewrap{margin-bottom:0}.sf-b .sf-stage{padding:56px 16px 66px;min-height:230px}}.sf-b-under{display:grid;grid-template-columns:minmax(0,1fr) 132px minmax(0,1fr);gap:8px;align-items:start;min-height:100px;padding-top:14px;margin-bottom:6px}.sf-b-flank{display:flex;flex-direction:column;gap:6px;min-width:0}.sf-b-flank-ses{align-items:flex-start}.sf-b-flank-meta{align-items:flex-end}.sf-ses-pill{max-width:100%}.sf-ses-pill>summary{display:flex;align-items:center;min-height:30px;max-width:100%;padding:3px 10px;gap:6px;border:1px solid #D8CCBC;border-radius:7px;background:var(--white);font:650 13px/1.5 var(--fa);color:var(--ink)}.sf-ses-pill>summary:hover{background:var(--nav-soft)}.sf-ses-pill>summary span{min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sf-ses-pill>summary .i{width:13px;height:13px;color:var(--ink-2)}.sf-ses-pill .sf-ses-menu{min-width:280px}.sf-flank-note{font:500 12px/1.6 var(--fa);color:var(--muted);white-space:nowrap}.sf-flank-note b{font-weight:650;color:var(--ink-2)}.sf-b-flank-meta .lesson-meta{display:flex;flex-direction:column;align-items:flex-end;gap:6px;margin:0!important;max-width:100%}.sf-b-flank-meta .lesson-meta>.level{min-height:30px;padding:3px 10px;border-radius:7px;font-size:13px}.sf-b-flank-meta .lesson-meta>span:not(:last-child){display:none}.sf-b-flank-meta .lesson-meta>span:last-child{max-width:100%;font-size:12px;line-height:1.6;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}@media(max-width:780px){.sf-b-under{grid-template-columns:minmax(0,1fr) minmax(0,1fr);padding-top:98px;gap:8px 12px;min-height:0;margin-bottom:12px}.sf-b-ringgap{display:none}.sf-b-flank-meta .lesson-meta>span:last-child{white-space:normal;text-align:end;text-wrap:balance}}