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6px;font-size:1.6rem;line-height:1}.pbar{background:var(--ring-bg);border-radius:99px;flex:1;height:16px;overflow:hidden}.pbar>i{background:var(--primary);border-radius:99px;height:100%;transition:width .35s cubic-bezier(.3,1.4,.6,1);display:block;position:relative}.pbar>i:after{content:"";background:#ffffff59;border-radius:99px;height:4px;position:absolute;top:4px;left:10px;right:10px}.combo{color:var(--warn);white-space:nowrap;font-weight:900}.player-body{width:100%;max-width:680px;padding:8px max(1rem, env(safe-area-inset-left)) 230px;flex:1;margin:0 auto}.p-kicker{letter-spacing:.06em;text-transform:uppercase;color:var(--violet);align-items:center;gap:8px;margin:8px 0 6px;font-size:.8rem;font-weight:900;display:flex}.p-kicker .new{background:var(--violet);color:#fff;border-radius:8px;padding:1px 7px}.p-q{margin-bottom:18px;font-size:1.3rem;font-weight:800;line-height:1.4}.p-q .md{font-size:1.1rem;font-weight:700}.tiles{flex-direction:column;gap:10px;display:flex}.tile{text-align:left;border:2px solid var(--line-2);background:var(--card);width:100%;color:var(--text);border-bottom-width:4px;border-radius:16px;align-items:center;gap:12px;padding:14px 16px;font-size:1.02rem;font-weight:600;line-height:1.35;transition:transform 50ms;display:flex}.tile:active:not(:disabled){border-bottom-width:2px;margin-bottom:2px;transform:translateY(2px)}.tile .k{border:2px solid var(--line-2);width:28px;height:28px;color:var(--muted);border-radius:9px;flex:none;place-items:center;font-size:.8rem;font-weight:900;display:grid}.tile.sel{border-color:var(--accent);background:var(--accent-2);color:color-mix(in srgb, var(--accent) 70%, var(--text))}.tile.sel .k{border-color:var(--accent);color:var(--accent)}.tile.right{border-color:var(--ok);background:var(--ok-2);color:var(--ok-text)}.tile.wrong{border-color:var(--danger);background:var(--danger-2);color:var(--bad-text)}.tile:disabled{cursor:default}.tile.center{text-align:center;justify-content:center;font-weight:800}.tf-row{grid-template-columns:1fr 1fr;gap:12px;display:grid}.tf-row .tile{padding:22px 10px;font-size:1.15rem}.flip{perspective:1200px}.flip-inner{min-height:240px;transform-style:preserve-3d;transition:transform .45s;position:relative}.flip.on .flip-inner{transform:rotateY(180deg)}.flip-face{backface-visibility:hidden;text-align:center;border:2px solid var(--line-2);background:var(--card);border-bottom-width:5px;border-radius:22px;justify-content:center;align-items:center;padding:22px;font-size:1.15rem;font-weight:700;display:flex;position:absolute;inset:0;overflow:auto}.flip-face.back{border-color:var(--primary);background:var(--primary-soft);text-align:left;align-items:flex-start;font-size:1.02rem;font-weight:500;transform:rotateY(180deg)}.flip-face .md{width:100%}.bank{flex-wrap:wrap;gap:8px;display:flex}.answer-line{border-bottom:2px solid var(--line-2);flex-direction:column;gap:8px;min-height:60px;margin-bottom:18px;padding-bottom:10px;display:flex}.chiptile{border:2px solid var(--line-2);background:var(--card);text-align:left;color:var(--text);border-bottom-width:4px;border-radius:14px;padding:10px 14px;font-weight:600}.chiptile.used{visibility:hidden}.chiptile .n{color:var(--accent);margin-right:6px;font-weight:900}.pairs{grid-template-columns:1fr 1fr;gap:10px;display:grid}.pairs .col{flex-direction:column;gap:10px;display:flex}.pairs .tile{text-align:center;justify-content:center;min-height:64px;font-size:.95rem}.pairs .tile.matched{opacity:.45;border-color:var(--ok);background:var(--ok-2)}.pairs .tile.shake{border-color:var(--danger);animation:.35s shake}@keyframes shake{25%{transform:translate(-5px)}75%{transform:translate(5px)}}.p-input{border:2px solid var(--line-2);background:var(--bg);border-radius:16px;width:100%;padding:14px 16px;font-size:1.15rem;font-weight:600}.p-input:focus{border-color:var(--accent);background:var(--card);outline:none}textarea.p-input{min-height:160px;font-size:1.02rem}.cloze2{font-size:1.12rem;font-weight:600;line-height:2.4}.cloze2 input{border:0;border-bottom:3px solid var(--accent);background:var(--accent-2);text-align:center;width:9ch;font:inherit;color:var(--text);border-radius:8px 8px 0 0;margin:0 3px;padding:4px 8px;display:inline-block}.cloze2 input.right{border-color:var(--ok);background:var(--ok-2)}.cloze2 input.wrong{border-color:var(--danger);background:var(--danger-2)}.model{border:2px solid var(--line);background:var(--bg);border-radius:16px;margin-top:14px;padding:12px 14px}.model .t{letter-spacing:.05em;text-transform:uppercase;color:var(--muted);margin-bottom:4px;font-size:.8rem;font-weight:900}.p-foot{z-index:45;border-top:2px solid var(--line);background:var(--card);padding:16px max(1rem, env(safe-area-inset-left)) calc(16px + var(--safe-b));position:fixed;bottom:0;left:0;right:0}.p-foot-in{flex-wrap:wrap;align-items:center;gap:14px;max-width:980px;margin:0 auto;display:flex}.p-foot .grow{min-width:0}.p-foot .btn.lg{min-width:160px}.p-foot.good{background:var(--ok-2);border-top-color:#0000}.p-foot.bad{background:var(--danger-2);border-top-color:#0000}.p-foot.good .btn.lg{--b:var(--primary);--t:#fff;border-color:var(--primary-edge)}.p-foot.bad .btn.lg{--b:var(--danger);--t:#fff;border-color:var(--danger-edge)}.fb-title{align-items:center;gap:10px;font-size:1.35rem;font-weight:900;display:flex}.p-foot.good .fb-title{color:var(--ok-text)}.p-foot.bad .fb-title{color:var(--bad-text)}.fb-badge{background:var(--card);border-radius:50%;flex:none;place-items:center;width:42px;height:42px;font-size:1.3rem;display:grid}.fb-text{margin-top:4px;font-weight:600}.p-foot.good .fb-text{color:var(--ok-text)}.p-foot.bad .fb-text{color:var(--bad-text)}.fb-expl{background:color-mix(in srgb, var(--card) 70%, transparent);max-height:38vh;color:var(--text);border-radius:12px;margin-top:8px;padding:10px 12px;overflow:auto}.fb-link{color:inherit;background:0 0;border:0;margin-top:4px;padding:0;font-size:.9rem;font-weight:800;text-decoration:underline}.grade4{grid-template-columns:repeat(4,1fr);gap:8px;width:100%;display:grid}.grade4 .btn{flex-direction:column;gap:0;padding:.55rem .2rem}.grade4 .btn small{opacity:.75;font-size:.72rem;font-weight:600}@media (max-width:600px){.p-foot-in>.btn.lg{width:100%}}.combo-toast{background:var(--warn);color:#fff;z-index:60;box-shadow:0 4px 0 var(--warn-edge);border-radius:99px;padding:8px 18px;font-weight:900;animation:.25s pop-in,.4s 1.4s forwards fade-out;position:fixed;top:10px;left:50%;transform:translate(-50%)}@keyframes fade-out{to{opacity:0;transform:translate(-50%,-10px)}}.end{text-align:center;background:var(--card);flex-direction:column;justify-content:center;align-items:center;gap:18px;min-height:100dvh;padding:24px 1rem 140px;display:flex}.end h1{color:var(--gold-edge);margin:0;font-size:1.9rem}.end .big{font-size:5rem;animation:.4s cubic-bezier(.3,1.6,.6,1) pop-in}.end-tiles{grid-template-columns:repeat(3,minmax(0,120px));gap:12px;display:grid}.end-tile{border:2px solid var(--c);background:var(--c);border-radius:16px;overflow:hidden}.end-tile .h{color:#fff;letter-spacing:.06em;text-transform:uppercase;padding:4px;font-size:.72rem;font-weight:900}.end-tile .v{background:var(--card);color:var(--c);border-radius:13px 13px 0 0;justify-content:center;align-items:center;gap:4px;padding:12px 4px;font-size:1.35rem;font-weight:900;display:flex}.confetti{pointer-events:none;z-index:1;position:fixed;inset:0;overflow:hidden}.confetti i{border-radius:3px;width:10px;height:14px;animation:linear forwards fall;position:absolute;top:-12px}@keyframes fall{to{transform:translateY(110vh)rotate(720deg)}}.week{grid-template-columns:repeat(7,1fr);align-items:end;gap:8px;height:140px;padding-top:10px;display:grid}.week .col{flex-direction:column;justify-content:flex-end;align-items:center;gap:4px;height:100%;display:flex}.week .b{background:var(--accent);border-radius:8px 8px 4px 4px;width:100%;max-width:34px;min-height:4px}.week .b.goal{background:var(--primary)}.week .lbl{color:var(--muted);font-size:.72rem;font-weight:800}.week .val{color:var(--text);font-size:.7rem;font-weight:800}.bigstats{grid-template-columns:repeat(2,1fr);gap:10px;display:grid}.bigstat{border:2px solid var(--line);border-radius:16px;align-items:center;gap:10px;padding:12px 14px;display:flex}.bigstat .e{font-size:1.6rem}.bigstat b{font-size:1.25rem;font-weight:900;line-height:1.1;display:block}.bigstat span{color:var(--muted);font-size:.8rem;font-weight:700}.goal-opts{grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;display:grid}.goal-opts .btn{white-space:normal;padding:.5rem .2rem;font-size:.9rem}.goal-opts .btn small{font-size:.72rem}.hub-card{color:var(--text);align-items:center;gap:14px;display:flex}.hub-card .e{background:var(--accent-2);border-radius:16px;flex:none;place-items:center;width:54px;height:54px;font-size:1.7rem;display:grid}.area-label{letter-spacing:.07em;text-transform:uppercase;color:var(--muted);margin:4px 0 6px;font-size:.74rem;font-weight:900}.course-menu .ring{width:40px;height:40px}.course-menu .ring .label{font-size:.62rem}@media (min-width:900px){.course-menu{max-height:calc(100dvh - 90px)}}.tile .name{overflow-wrap:anywhere;-webkit-hyphens:auto;hyphens:auto}.read-card{padding:1.1rem 1.25rem;font-size:1.02rem}.read-card .md>:first-child{margin-top:0}.read-card .md h2{font-size:1.2rem}.quick-next{text-align:left;cursor:pointer;width:100%;font:inherit;color:inherit;border:2px solid var(--primary);border-bottom-width:4px;align-items:center;gap:12px;margin-top:12px;padding:12px 14px;display:flex}.quick-next:active{border-bottom-width:2px;transform:translateY(2px)}.quick-next small{color:var(--muted);text-transform:uppercase;letter-spacing:.04em;white-space:nowrap;text-overflow:ellipsis;font-size:.75rem;font-weight:800;display:block;overflow:hidden}.quick-next b{font-size:1.02rem;line-height:1.3;display:block}.quick-next .qn-icon{font-size:1.6rem}.quick-next .qn-time{color:var(--primary);white-space:nowrap;font-weight:900}.track-tabs{background:var(--line);border-radius:14px;gap:6px;margin-top:12px;padding:4px;display:flex}.track-tabs button{min-width:0;color:var(--muted);font:inherit;cursor:pointer;background:0 0;border:0;border-radius:10px;flex:1 1 0;padding:8px 10px;font-weight:800;line-height:1.2}.track-tabs button small{opacity:.8;font-size:.72rem;font-weight:700;display:block}.track-tabs button.on{background:var(--card);color:var(--text);box-shadow:0 0 0 2px var(--primary) inset}.netbar{z-index:45;padding:calc(4px + env(safe-area-inset-top,0px)) 12px 4px;color:#fff;text-align:center;background:#3c4a6b;font-size:.78rem;font-weight:700;position:relative}.netbar.sync{background:var(--accent)}.dg,.md figure{--dg-a-hoeren:#a5385f;--dg-a-kommunikation:#55626d;--dg-a-redefluss:#9e5c0b;--dg-a-schlucken:#3a7625;--dg-a-sprache:#0b6b67;--dg-a-sprechen:#2856a6;--dg-a-stimme:#7245a6;--dg-accent:#0b6b67;--dg-accent-soft:#d3eae7;--dg-accent-strong:#07514e;--dg-bad:#b1262f;--dg-font-body:"Charis SIL", Charter, "Bitstream Charter", Georgia, serif;--dg-font-mono:"IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;--dg-font-ui:"Bricolage Grotesque", "Charis SIL", "Segoe UI", system-ui, -apple-system, sans-serif;--dg-ink:#13262a;--dg-ink-2:#455a5e;--dg-ink-3:#6d8184;--dg-line-strong:#b3c3c0;--dg-ok:#2a7637;--dg-surface:#fff;--dg-surface-2:#e5ecea}@media (prefers-color-scheme:dark){.dg,.md figure{--dg-a-hoeren:#ee8db0;--dg-a-kommunikation:#9ba9b4;--dg-a-redefluss:#e1a04b;--dg-a-schlucken:#87c56c;--dg-a-sprache:#4cbfb5;--dg-a-sprechen:#7fa6ef;--dg-a-stimme:#b893ea;--dg-accent:#4cbfb5;--dg-accent-soft:#143633;--dg-accent-strong:#7fd5cc;--dg-bad:#f07f87;--dg-ink:#e1ebe9;--dg-ink-2:#a6b8b6;--dg-ink-3:#7f9392;--dg-line-strong:#37494c;--dg-ok:#6cc77b;--dg-surface:#142023;--dg-surface-2:#1a292c}}.md figure{margin-inline:0;overflow-x:auto}.md figure.diagram{max-width:none}.md figcaption{font-family:var(--dg-font-ui);color:var(--dg-ink-3);margin-top:8px;font-size:.82rem}.md figure.diagram{overflow-x:auto}.dg{width:100%;min-width:620px;height:auto;font-family:var(--dg-font-ui);display:block}.dg .box{fill:var(--dg-surface);stroke:var(--dg-line-strong);stroke-width:1.5px}.dg .box-soft{fill:var(--dg-surface-2);stroke:var(--dg-line-strong);stroke-width:1.2px}.dg .box-accent{fill:var(--dg-accent-soft);stroke:var(--dg-accent);stroke-width:1.5px}.dg .box-sprache{fill:color-mix(in srgb, 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.ln{stroke:var(--dg-ink-3);stroke-width:1.5px;fill:none}.dg .ah{fill:var(--dg-ink-3)}.dg .c-sprache{fill:var(--dg-a-sprache)}.dg .c-sprechen{fill:var(--dg-a-sprechen)}.dg .c-stimme{fill:var(--dg-a-stimme)}.dg .c-redefluss{fill:var(--dg-a-redefluss)}.dg .c-schlucken{fill:var(--dg-a-schlucken)}.dg .c-hoeren{fill:var(--dg-a-hoeren)}.dg .c-komm{fill:var(--dg-a-kommunikation)}.dg .c-accent{fill:var(--dg-accent)}.dg .c-bad{fill:var(--dg-bad)}.dg .t-body{fill:var(--dg-ink);font-family:var(--dg-font-body);font-size:14.5px}.dg .c-accent-strong{fill:var(--dg-accent-strong);font-weight:700}.dg .c-ok{fill:var(--dg-ok)}.dg.dg-sm{min-width:440px;max-width:640px}.dg .dot{fill:var(--dg-accent)}.dg .axis{stroke:var(--dg-line-strong);stroke-width:2px;fill:none}.dg .grid{stroke:var(--dg-line-strong);stroke-width:1px;fill:none;stroke-dasharray:3 4}.dg .tri{stroke:var(--dg-ink-3);stroke-width:1.5px;fill:none}.dg .t-axis{fill:var(--dg-ink-3);font-family:var(--dg-font-mono);font-size:11px}.dg .t-num{fill:var(--dg-ink-2);font-family:var(--dg-font-mono);font-size:11.5px}.dg .t-ipa{fill:var(--dg-ink);font-family:var(--dg-font-body);font-size:17px}.dg .t-ipa-acc{fill:var(--dg-accent);font-family:var(--dg-font-body);font-size:15px}.dg .curve{fill:color-mix(in srgb, var(--dg-accent) 13%, transparent);stroke:var(--dg-accent);stroke-width:2px}.dg .curve-low{fill:color-mix(in srgb, var(--dg-bad) 22%, transparent);stroke:none}.dg .mark{stroke:var(--dg-ink-3);stroke-width:1.2px;stroke-dasharray:4 3;fill:none}.dg .line-acc{stroke:var(--dg-accent);stroke-width:2.5px;fill:none}.md figure.video{max-width:none}.md .video-box{aspect-ratio:16/9;background:#000;border-radius:12px;position:relative;overflow:hidden}.md .video-box iframe{border:0;width:100%;height:100%;position:absolute;inset:0}.md .sim-embed{border:2px solid var(--line);background:var(--card);border-radius:14px;margin:1rem 0;padding:12px}.md .sim-embed .sim-task:empty,.md .sim-embed[data-mounted] .sim-loading,.md .sim-embed .sim-task{display:none}.md .sim-loading{color:var(--muted);font-size:.9rem}.md .sim-head{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.md .sim-badge{background:var(--accent);color:#fff;text-transform:uppercase;letter-spacing:.04em;border-radius:999px;padding:2px 8px;font-size:.72rem;font-weight:800}.md .sim-blurb{color:var(--muted);margin:.4rem 0;font-size:.92rem}.md .sim-goal{background:color-mix(in srgb, var(--primary) 12%, transparent);border-radius:10px;margin:.5rem 0;padding:8px 10px;font-size:.95rem}.md .sim-embed canvas{aspect-ratio:16/10;touch-action:pan-y;background:#fff;border-radius:10px;width:100%;height:auto;display:block}.md .sim-bar{gap:8px;margin:8px 0;display:flex}.md .sim-ctls{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:8px 14px;display:grid}.md .sim-ctl{flex-direction:column;gap:2px;font-size:.88rem;font-weight:700;display:flex}.md .sim-ctl output{color:var(--accent);font-weight:800}.md .sim-ctl input[type=range]{width:100%;accent-color:var(--primary)}.md .sim-ctl select{font:inherit;border:2px solid var(--line);background:var(--card);color:var(--text);border-radius:8px;padding:4px 6px}.md .sim-info{font-variant-numeric:tabular-nums;margin:8px 0 0;padding-left:1.1rem;font-size:.88rem}.md .sim-more{margin-top:6px;font-size:.9rem}.md .sim-more summary{cursor:pointer;color:var(--accent);font-weight:700}.md .sim-formula{margin:6px 0;font-family:Georgia,Times New Roman,serif}