html.tc-open{overflow:hidden}@media(min-width:900px){html.tc-open{overflow:auto}}.tc-root{position:fixed;inset:0;z-index:80;font-family:var(--iu-ui);color:var(--iu-text)}.tc-root .tc-scrim{position:absolute;inset:0;background:#0b11156b;opacity:0;transition:opacity .24s ease}.tc-root.is-in .tc-scrim{opacity:1}.tc-root .tc-panel{position:absolute;inset-inline:0;bottom:0;height:92dvh;display:flex;flex-direction:column;background:var(--iu-card);border-radius:28px 28px 0 0;box-shadow:0 -12px 40px -12px #17384747;transform:translateY(100%);transition:transform .3s cubic-bezier(.2,.8,.2,1);overflow:hidden}.tc-root.is-in .tc-panel{transform:none}.tc-root .tc-grab{width:36px;height:4px;border-radius:2px;background:var(--iu-border-strong);margin:10px auto 6px;flex:none}@media(min-width:900px){.tc-root[data-layout=side]{inset:auto;top:var(--tc-top, 0px);bottom:0;inset-inline-end:0;width:460px;z-index:40}.tc-root[data-layout=side] .tc-scrim{display:none}.tc-root[data-layout=side] .tc-panel{inset:12px;inset-inline-start:0;height:auto;border-radius:24px;border:1px solid var(--iu-border);box-shadow:0 24px 60px -20px #1738474d,0 2px 6px #1738470f;transform:translate(calc(100% + 24px));opacity:0;transition:transform .3s cubic-bezier(.2,.8,.2,1),opacity .2s ease}.tc-root[data-layout=side][dir=rtl] .tc-panel{transform:translate(calc(-100% - 24px))}.tc-root[data-layout=dialog] .tc-panel{inset:50% auto auto 50%;width:min(620px,calc(100vw - 48px));height:min(820px,calc(100dvh - 48px));border-radius:24px;transform:translate(-50%,calc(-50% + 16px));opacity:0;transition:transform .26s cubic-bezier(.2,.8,.2,1),opacity .2s ease}.tc-root[data-layout=dialog].is-in .tc-panel{transform:translate(-50%,-50%);opacity:1}.tc-root[data-layout=side].is-in .tc-panel{transform:none;opacity:1}.tc-root .tc-grab{display:none}.tc-root .tc-header{padding-top:14px}}html.tc-open:has(.tc-root[data-layout=dialog]){overflow:hidden}html body>:not(nav):not(.tc-root):not(script){transition:margin .3s cubic-bezier(.2,.8,.2,1)}html.tc-docked body>:not(nav):not(.tc-root):not(script){margin-inline-end:460px}html.tc-open .iu .tc-dock{visibility:hidden}.tc-root .tc-header{display:flex;align-items:center;gap:10px;padding:4px 12px 10px 16px;flex:none}.tc-root[dir=rtl] .tc-header{padding:4px 16px 10px 12px}.tc-root .tc-titles{flex:1;min-width:0}.tc-root .tc-titles h2,.tc-root .tc-titles p{margin:0}.tc-root .tc-left{display:inline-flex;align-items:center;gap:4px;padding:4px 10px 4px 8px;border-radius:999px;background:var(--iu-sunken);color:var(--iu-text-2);font-size:13px;font-weight:500;white-space:nowrap}.tc-root .tc-left svg{width:12px;height:12px;color:var(--iu-teal);fill:currentColor}.tc-root .tc-left.is-none svg{color:var(--iu-text-3)}.tc-root .tc-avatar{display:inline-grid;place-items:center;flex:none;border-radius:999px;background:var(--iu-teal-soft);color:var(--iu-teal)}.tc-root .tc-avatar.md{width:40px;height:40px}.tc-root .tc-avatar.md svg{width:21px;height:21px}.tc-root .tc-avatar.sm{width:24px;height:24px}.tc-root .tc-avatar.sm svg{width:13px;height:13px}.tc-root .tc-avatar.lg{width:56px;height:56px}.tc-root .tc-avatar.lg svg{width:28px;height:28px}.tc-root .tc-context{margin:0 16px;padding:8px 14px 10px;border-radius:20px;background:var(--iu-sunken);flex:none}.tc-root .tc-context p{margin:0}.tc-root .tc-words{display:flex;flex-wrap:wrap;gap:2px 4px;margin-top:2px}.tc-root .tc-word{font-family:var(--iu-studied);font-size:21px;font-weight:700;line-height:1.7;padding:1px 6px;border-radius:8px;border:0;background:transparent;color:var(--iu-text);cursor:pointer;transition:background-color .16s ease,color .16s ease}.tc-root .tc-word:hover:not(:disabled){background:var(--iu-teal-wash)}.tc-root .tc-word.is-on{background:var(--iu-teal-soft);color:var(--iu-teal-text)}.tc-root .tc-word:disabled{cursor:default}.tc-root .tc-word:focus-visible{outline:2px solid var(--iu-teal);outline-offset:1px}.tc-root .tc-prow{display:flex;gap:10px;margin-top:4px}.tc-root .tc-prow>span:first-child{width:52px;flex:none}.tc-root .tc-scroll{flex:1;min-height:0;overflow-y:auto;overscroll-behavior:contain;position:relative}.tc-root .tc-list{padding:12px 16px 20px;display:flex;flex-direction:column;min-height:100%;box-sizing:border-box}.tc-root .tc-entry p{margin:0}.tc-root .tc-entry+.tc-entry{margin-top:28px}.tc-root .tc-e-student+.tc-entry{margin-top:12px}.tc-root .tc-q{align-self:flex-start;max-width:85%;padding:10px 14px;border-radius:18px;background:var(--iu-teal-soft);border-start-start-radius:6px}.tc-root .tc-e-student{display:flex}.tc-root .tc-head-row{display:flex;align-items:center;gap:8px;margin-bottom:8px}.tc-root .tc-lead+.tc-body-text{margin-top:6px}.tc-root .tc-body-text{white-space:pre-line}.tc-root .tc-caret{display:inline-block;width:2px;height:16px;margin-inline-start:3px;vertical-align:middle;border-radius:1px;background:var(--iu-teal);animation:tc-blink 1.04s steps(1) infinite}@keyframes tc-blink{50%{opacity:0}}.tc-root .tc-dots{display:flex;gap:4px;margin:2px 0 4px}.tc-root .tc-dots i{width:6px;height:6px;border-radius:50%;background:var(--iu-teal);opacity:.3;animation:tc-dot 1.2s infinite}.tc-root .tc-dots i:nth-child(2){animation-delay:.4s}.tc-root .tc-dots i:nth-child(3){animation-delay:.8s}@keyframes tc-dot{0%,33%{opacity:1}34%,to{opacity:.3}}.tc-root .tc-bar{display:block;height:10px;margin-top:10px;border-radius:5px;background:var(--iu-sunken)}.tc-root .tc-ba{margin-top:10px;padding:8px 14px;border-radius:16px;background:var(--iu-sunken)}.tc-root .tc-ba>div{display:flex;align-items:center;justify-content:space-between;gap:10px}.tc-root .tc-ex{display:flex;gap:8px;margin-top:10px}.tc-root .tc-ex>svg{width:18px;height:18px;color:var(--iu-teal);flex:none;margin-top:2px}.tc-root .tc-ex p+p{margin-top:2px}.tc-root .tc-foot{display:flex;align-items:center;gap:4px;margin-top:6px}.tc-root .tc-grounded{display:inline-flex;align-items:center;gap:5px;flex:1;min-width:0}.tc-root .tc-grounded svg{width:14px;height:14px;color:var(--iu-text-3);flex:none}.tc-root p.tc-grounded{margin-top:8px}.tc-root .tc-acts{display:inline-flex}.tc-root .tc-act{width:40px;height:40px;display:inline-grid;place-items:center;border:0;border-radius:999px;background:transparent;color:var(--iu-text-3);cursor:pointer;transition:background-color .15s ease,color .15s ease}.tc-root .tc-act svg{width:20px;height:20px}.tc-root .tc-act:hover:not(:disabled){background:var(--iu-sunken)}.tc-root .tc-act.is-on{color:var(--iu-teal)}.tc-root .tc-act.is-on svg{fill:color-mix(in srgb,var(--iu-teal) 18%,transparent)}.tc-root .tc-act:disabled{cursor:default}.tc-root .tc-act:focus-visible{outline:2px solid var(--iu-teal);outline-offset:1px}.tc-root .tc-fb{margin-top:8px;padding:14px;border-radius:16px;border:1px solid var(--iu-border);background:var(--iu-card)}.tc-root .tc-fb-reasons{display:flex;flex-wrap:wrap;gap:6px;margin:10px 0}.tc-root .tc-fb-note{width:100%;box-sizing:border-box;resize:none;border:0;border-radius:12px;padding:8px 12px;background:var(--iu-sunken);color:var(--iu-text);font:inherit;font-size:14.5px;line-height:1.75}.tc-root .tc-fb-note:focus{outline:2px solid color-mix(in srgb,var(--iu-teal) 45%,transparent)}.tc-root .tc-fb-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:10px}.tc-root .tc-chip{display:inline-flex;align-items:center;gap:6px;height:38px;padding:0 16px;flex:none;border-radius:999px;border:1px solid var(--iu-border);background:var(--iu-card);color:var(--iu-text);font:inherit;font-size:14.5px;font-weight:600;cursor:pointer;white-space:nowrap;transition:background-color .15s ease,border-color .15s ease,color .15s ease}.tc-root .tc-chip:hover{border-color:var(--iu-border-strong)}.tc-root .tc-chip.is-on{background:var(--iu-primary-soft);border-color:color-mix(in srgb,var(--iu-primary) 40%,transparent);color:var(--iu-primary-text)}.tc-root .tc-chip:focus-visible{outline:2px solid var(--iu-teal);outline-offset:1px}.tc-root .tc-quiz{margin-top:8px;padding:14px}.tc-root .tc-opts{display:flex;flex-direction:column;gap:8px;margin-top:10px}.tc-root .tc-opt{display:flex;align-items:center;gap:10px;padding:12px;border-radius:14px;text-align:start;border:1px solid var(--iu-border);background:var(--iu-card);color:var(--iu-text);font:inherit;cursor:pointer;transition:background-color .16s ease,border-color .16s ease,opacity .16s ease}.tc-root .tc-opt:hover:not(:disabled){border-color:var(--iu-teal)}.tc-root .tc-opt>span:nth-child(2){flex:1}.tc-root .tc-opt-letter{width:24px;height:24px;flex:none;display:grid;place-items:center;border-radius:50%;background:var(--iu-sunken);color:var(--iu-text-2);font-size:12px;font-weight:600}.tc-root .tc-opt-mark svg{width:18px;height:18px;display:block}.tc-root .tc-opt.is-right{background:var(--iu-success-soft);border:1.5px solid var(--iu-success);cursor:default}.tc-root .tc-opt.is-right .tc-opt-mark{color:var(--iu-success)}.tc-root .tc-opt.is-wrong{background:var(--iu-error-soft);border:1.5px solid var(--iu-error);cursor:default}.tc-root .tc-opt.is-wrong .tc-opt-mark{color:var(--iu-error)}.tc-root .tc-opt.is-dim{opacity:.55;cursor:default}.tc-root .tc-quiz-after{margin-top:10px!important}.tc-root .tc-review{padding:14px;border-radius:16px;background:var(--iu-teal-wash)}.tc-root .tc-review.is-fix{background:var(--iu-success-soft)}.tc-root .tc-review p+p{margin-top:6px}.tc-root .tc-review-title{display:flex;align-items:center;gap:8px;margin-bottom:6px!important}.tc-root .tc-review-title svg{width:20px;height:20px;color:var(--iu-teal);flex:none}.tc-root .tc-review.is-fix .tc-review-title svg{color:var(--iu-success)}.tc-root .tc-fixed{display:inline-flex;align-items:center;gap:6px;margin-top:10px;padding:4px 10px;border-radius:999px;background:var(--iu-card)}.tc-root .tc-fixed svg{width:14px;height:14px;color:var(--iu-success)}.tc-root .tc-stopped{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:10px}.tc-root .tc-failed{padding:14px;border-radius:16px;background:var(--iu-error-soft)}.tc-root .tc-failed-title{display:flex;align-items:center;gap:8px}.tc-root .tc-failed-title svg{width:18px;height:18px;color:var(--iu-error);flex:none}.tc-root .tc-failed .t-body-s{margin:4px 0 12px!important}.tc-root .tc-limit{padding:16px}.tc-root .tc-limit-head{display:flex;gap:12px;align-items:flex-start;margin-bottom:14px}.tc-root .tc-crown{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;background:var(--iu-primary-soft);color:var(--iu-primary);flex:none}.tc-root .tc-crown svg{width:20px;height:20px}.tc-root .tc-limit ul{list-style:none;margin:6px 0 16px;padding:0}.tc-root .tc-limit li{display:flex;align-items:center;gap:8px;padding-top:6px}.tc-root .tc-limit li svg{width:16px;height:16px;color:var(--iu-primary);flex:none}.tc-root .tc-limit .iu-btn.ghost{margin-top:4px}.tc-root.is-solo .tc-list{padding-top:8px}.tc-root .tc-empty{display:flex;flex-direction:column;flex:1}.tc-root .tc-empty-mid{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:24px 12px;gap:6px}.tc-root .tc-empty-mid .tc-avatar{margin-bottom:8px}.tc-root .tc-empty-mid h3,.tc-root .tc-empty-mid p{margin:0}.tc-root .tc-suggest{display:flex;flex-direction:column;gap:8px}.tc-root .tc-suggest>p{margin:0 0 2px}.tc-root .tc-sg{display:flex;align-items:center;justify-content:space-between;gap:10px;width:100%;padding:12px 14px;border-radius:14px;border:1px solid var(--iu-border);background:var(--iu-card);color:var(--iu-text);font:inherit;font-size:15.5px;font-weight:500;text-align:start;cursor:pointer;transition:border-color .15s ease,background-color .15s ease}.tc-root .tc-sg svg{width:18px;height:18px;color:var(--iu-teal);flex:none}.tc-root .tc-sg:hover{border-color:var(--iu-teal);background:var(--iu-teal-wash)}.tc-root .tc-sg:focus-visible{outline:2px solid var(--iu-teal);outline-offset:1px}.tc-root .tc-pick h3,.tc-root .tc-pick>p{margin:0}.tc-root .tc-pick>p{margin:4px 0 12px}.tc-root .tc-pick-list{display:flex;flex-direction:column}.tc-root .tc-pick-row{display:flex;flex-direction:column;align-items:stretch;gap:2px;padding:10px 4px;text-align:start;border:0;border-bottom:1px solid var(--iu-border);background:transparent;color:inherit;font:inherit;cursor:pointer}.tc-root .tc-pick-row .t-body-s{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.tc-root .tc-pick-row:hover{background:var(--iu-sunken)}.tc-root .tc-gate{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:8px;padding:24px 8px}.tc-root .tc-gate h3,.tc-root .tc-gate p{margin:0}.tc-root .tc-gate .iu-btn{margin-top:10px}.tc-root .tc-jump{position:absolute;left:50%;transform:translate(-50%);bottom:132px;z-index:2;width:40px;height:40px;border-radius:50%;display:grid;place-items:center;border:1px solid var(--iu-border);background:var(--iu-card);color:var(--iu-text-2);box-shadow:var(--iu-shadow-card);cursor:pointer}.tc-root .tc-jump svg{width:20px;height:20px}.tc-root .tc-follow{display:flex;gap:6px;padding:8px 12px 6px;overflow-x:auto;flex:none;scrollbar-width:none;border-top:1px solid var(--iu-border)}.tc-root .tc-follow::-webkit-scrollbar{display:none}.tc-root .tc-follow[hidden]{display:none}.tc-root .tc-follow:not([hidden])+.tc-composer{border-top:0}.tc-root .tc-limitbar{display:flex;align-items:center;gap:10px;flex:none;margin:6px 12px max(12px,env(safe-area-inset-bottom));padding:10px 10px 10px 12px;border-radius:20px;background:var(--iu-primary-wash);border:1px solid color-mix(in srgb,var(--iu-primary) 22%,transparent);animation:tc-arrive .24s cubic-bezier(.2,.8,.2,1) both}.tc-root[dir=rtl] .tc-limitbar{padding:10px 12px 10px 10px}.tc-root .tc-limitbar[hidden]{display:none}.tc-root .tc-limitbar .tc-crown{width:36px;height:36px;border-radius:11px}.tc-root .tc-limitbar-text{flex:1;min-width:0;display:flex;flex-direction:column}.tc-root .tc-limitbar .iu-btn{flex:none}.tc-root .tc-composer[hidden]{display:none}.tc-root .tc-composer{display:flex;align-items:flex-end;gap:2px;margin:6px 12px max(12px,env(safe-area-inset-bottom));padding-inline:18px 6px;border-radius:27px;border:1px solid var(--iu-border);background:var(--iu-sunken);flex:none;transition:background-color .15s ease,border-color .15s ease}.tc-root .tc-composer:focus-within{background:var(--iu-card);border-color:color-mix(in srgb,var(--iu-teal) 45%,transparent)}.tc-root .tc-composer.is-off{opacity:.7}.tc-root .tc-composer textarea{flex:1;min-width:0;resize:none;border:0;outline:0;background:transparent;color:var(--iu-text);font:inherit;font-size:17px;line-height:1.6;padding:13px 0;max-height:132px}.tc-root .tc-composer textarea::placeholder{color:var(--iu-text-3)}.tc-root .tc-composer .iu-icon-btn{margin-bottom:7px}.tc-root .tc-mic.is-live{color:var(--iu-error);background:var(--iu-error-soft)}.tc-root .tc-send{width:44px;height:44px;margin-bottom:6px;flex:none;border-radius:50%;border:0;display:grid;place-items:center;background:var(--iu-teal);color:#fff;cursor:pointer;transition:background-color .15s ease,opacity .15s ease}.tc-root .tc-send svg{width:22px;height:22px}.tc-root .tc-send.is-busy svg{width:14px;height:14px;fill:currentColor}.tc-root .tc-send:disabled{background:color-mix(in srgb,var(--iu-teal) 32%,transparent);cursor:default}.tc-root .tc-send:focus-visible{outline:2px solid var(--iu-teal);outline-offset:2px}.tc-root .tc-toast{position:absolute;left:50%;bottom:84px;transform:translate(-50%);z-index:3;padding:10px 16px;border-radius:12px;background:var(--iu-text);color:var(--iu-card);font-size:14.5px;font-weight:600;white-space:nowrap;transition:opacity .3s ease}.tc-root .tc-toast.is-out{opacity:0}.tc-root .tc-arrive{animation:tc-arrive .24s cubic-bezier(.2,.8,.2,1) both}@keyframes tc-arrive{0%{opacity:0;transform:translateY(8px)}}.tc-root .tc-fade{animation:tc-fade .32s ease both}@keyframes tc-fade{0%{opacity:0}}.tc-root .tc-reveal{-webkit-mask-image:linear-gradient(to bottom,#000 40%,transparent 60%);mask-image:linear-gradient(to bottom,#000 40%,transparent 60%);-webkit-mask-size:100% 250%;mask-size:100% 250%;-webkit-mask-position:0 0;mask-position:0 0;animation:tc-reveal .7s ease-out both}@keyframes tc-reveal{0%{-webkit-mask-position:0 100%;mask-position:0 100%}}@media(prefers-reduced-motion:reduce){.tc-root .tc-panel,.tc-root .tc-scrim{transition:none}.tc-root .tc-arrive,.tc-root .tc-fade,.tc-root .tc-reveal,.tc-root .tc-caret,.tc-root .tc-dots i{animation:none}.tc-root .tc-reveal{-webkit-mask-image:none;mask-image:none}}