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12px;font-size:22px;font-weight:900}.grid-2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:20px;margin-top:24px;display:grid}.article-explain{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:12px;display:grid}.article-explain div{background:var(--mint-2);border-radius:12px;padding:12px}.article-explain .on{background:#fff;outline:3px solid}.article-explain b{font-size:22px;display:block}.article-explain small{color:var(--muted)}table.forms{border-collapse:collapse;width:100%;font-size:17px}table.forms th,table.forms td{text-align:left;border-bottom:1px solid #e3eee6;padding:8px 10px}table.forms th{color:var(--muted);width:40%;font-weight:700}.example{border-bottom:1px solid #e3eee6;padding:12px 0}.example:last-child{border-bottom:0}.example strong{font-size:18px}.example div{color:var(--muted)}.tense-label{color:var(--orange);text-transform:uppercase;letter-spacing:.5px;margin-top:18px;font-size:13px;font-weight:800;display:inline-block}.rule{margin-top:20px}.rule h2{margin:0 0 8px;font-size:24px;font-weight:900}.rule p{white-space:pre-line;margin:0 0 12px;font-size:17px}.tip{background:var(--orange-soft);border-radius:14px;padding:14px 16px;font-size:16px}.lesson-shell{background:var(--mint);flex-direction:column;min-height:100vh;display:flex}.lesson-top{align-items:center;gap:16px;width:100%;max-width:880px;margin:0 auto;padding:20px 16px;display:flex}.icon-btn{cursor:pointer;width:44px;height:44px;color:var(--ink);background:#fff;border:0;border-radius:12px;flex-shrink:0;justify-content:center;align-items:center;text-decoration:none;display:flex}.progress{background:#fff;border-radius:999px;flex:1;height:14px;overflow:hidden}.progress>div{background:var(--orange);border-radius:999px;height:100%;transition:width .3s}.lesson-main{flex:1;width:100%;max-width:880px;margin:0 auto;padding:8px 16px 24px}.card{background:#fff;border-radius:20px;flex-direction:column;gap:24px;padding:clamp(22px,4vw,40px);display:flex}.card h1{letter-spacing:-.6px;margin:0;font-size:clamp(26px,3vw,34px);font-weight:900;line-height:1.2}.muted{color:var(--muted)}.mode-choice{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;display:grid}.mode-btn{text-align:left;background:var(--mint);cursor:pointer;color:var(--ink);border:3px solid #0000;border-radius:18px;flex-direction:column;gap:8px;padding:22px;display:flex}.mode-btn:hover{border-color:var(--orange)}.mode-btn strong{font-size:22px;font-weight:900}.mode-btn .mi{background:var(--orange);color:#fff;border-radius:14px;justify-content:center;align-items:center;width:48px;height:48px;display:flex}.theory-examples{background:var(--mint-2);border-radius:16px;flex-direction:column;gap:12px;padding:16px;display:flex}.ex-row{align-items:center;gap:12px;display:flex}.ex-row strong{font-size:19px;display:block}.ex-row span{color:var(--muted)}.round-speak{background:var(--orange-soft);width:40px;height:40px;color:var(--orange);cursor:pointer;border:0;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;display:flex}.readalong{font-size:20px;line-height:1.8}.readalong .w{cursor:pointer;border-radius:6px;padding:1px 2px;transition:background .1s}.readalong .w.on{background:var(--orange);color:#fff}.readalong .w.done{color:var(--muted)}.player{background:var(--petrol);color:#fff;border-radius:16px;flex-wrap:wrap;align-items:center;gap:12px;padding:12px 14px;display:flex}.player button{cursor:pointer;color:#fff;background:#ffffff1f;border:0;border-radius:10px;padding:10px 14px;font-size:15px;font-weight:800}.player button.play{background:var(--orange);border-radius:50%;justify-content:center;align-items:center;width:48px;height:48px;padding:0;display:flex}.player .time{font-variant-numeric:tabular-nums;color:#d6e8ea;font-size:14px}.player .bar{cursor:pointer;background:#ffffff2e;border-radius:999px;flex:160px;height:8px;overflow:hidden}.player .bar>div{background:var(--cyan);height:100%}.options{flex-direction:column;gap:12px;display:flex}.opt{text-align:left;border:2px solid var(--line);width:100%;color:var(--ink);cursor:pointer;background:#fff;border-bottom-width:4px;border-radius:14px;padding:16px 18px;font-size:18px;font-weight:600}.opt:hover:not(:disabled){border-color:var(--petrol)}.opt.selected{border-color:var(--petrol);background:var(--mint-2)}.opt.correct{border-color:var(--petrol);background:var(--mint)}.opt.wrong{border-color:var(--wrong);background:var(--orange-soft);color:var(--wrong-ink)}.opt.dim{opacity:.45}.pic-grid{grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;display:grid}.pic-grid .opt{text-align:center;flex-direction:column;align-items:center;gap:10px;display:flex}.pic-grid img{object-fit:contain;width:100%;height:120px}.pic-grid .emoji{font-size:52px;line-height:1.3}.answer-line{border-bottom:3px solid var(--line);flex-wrap:wrap;align-items:center;gap:10px;min-height:68px;padding-bottom:12px;display:flex}.answer-line.ok{border-color:var(--petrol)}.answer-line.bad{border-color:var(--wrong)}.bank{flex-wrap:wrap;justify-content:center;gap:10px;display:flex}.chip{color:var(--ink);border:2px solid var(--line);cursor:pointer;background:#fff;border-bottom-width:4px;border-radius:10px;padding:10px 16px;font-size:19px;font-weight:700}.chip.used{background:var(--mint);border-color:var(--mint);color:#0000;cursor:default}.match{grid-template-columns:1fr 1fr;gap:12px;display:grid}.match>div{flex-direction:column;gap:12px;display:flex}.match .opt{text-align:center}.blank{border-bottom:3px solid var(--line);text-align:center;min-width:80px;padding:0 6px;display:inline-block}.sentence{font-size:26px;font-weight:800}.listen-btns{justify-content:center;align-items:center;gap:16px;display:flex}.listen-big{background:var(--orange);color:#fff;cursor:pointer;border:0;border-radius:50%;justify-content:center;align-items:center;width:92px;height:92px;display:flex}.listen-slow{border:2px solid var(--line);cursor:pointer;width:54px;height:54px;color:var(--ink);background:#fff;border-radius:50%;font-weight:900}.feedback{border-top:4px solid var(--petrol);background:#fff}.feedback.bad{border-color:var(--orange);background:var(--orange-soft)}.feedback-inner{flex-wrap:wrap;align-items:flex-end;gap:20px;max-width:880px;margin:0 auto;padding:24px 16px 28px;display:flex}.feedback-text{flex-direction:column;flex:999 420px;gap:10px;display:flex}.verdict{color:var(--petrol);align-items:center;gap:10px;font-size:24px;font-weight:900;display:flex}.feedback.bad .verdict{color:var(--wrong-ink)}.why{background:var(--mint);border-radius:14px;padding:14px 16px;font-size:17px}.feedback.bad .why{background:#fff}.why b{letter-spacing:.4px;color:var(--petrol);font-size:13px;display:block}.feedback .btn{flex:200px}.footer-bar{width:100%;max-width:880px;margin:0 auto;padding:0 16px 28px}.result-stats{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;display:grid}.result-stats div{background:var(--mint);text-align:center;border-radius:14px;padding:16px}.result-stats b{font-size:28px;font-weight:900;display:block}.cando{background:var(--mint);border-radius:14px;padding:16px;font-size:18px;font-weight:700}.mistake{border:2px solid var(--line);border-radius:14px;padding:14px 16px}.mistake b{color:var(--petrol);font-size:18px}.empty{text-align:center;color:var(--muted);background:var(--mint-2);border-radius:18px;padding:40px}