:root{--bg:#f3f5fb;--surface:#fff;--text:#17203a;--muted:#5d6680;--border:#dde2ef;--primary:#2b4fd8;--primary-text:#fff;--primary-soft:#e6ebfd;--accent:#ffc93c;--mark:#fff1c2;--ok:#18864b;--ok-soft:#e3f6ea;--bad:#c62f3b;--bad-soft:#fde8ea;--radius:16px;--shadow:0 1px 2px #17203a0f, 0 4px 16px #17203a0f;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;-webkit-text-size-adjust:100%;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.5}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial;--bg:#0f1424;--surface:#182038;--text:#e8ecf8;--muted:#9aa3bd;--border:#2a3452;--primary:#6d8bff;--primary-text:#0f1424;--primary-soft:#222d52;--mark:#4a3d12;--ok:#4fd18b;--ok-soft:#173327;--bad:#ff7b86;--bad-soft:#3a1c22;--shadow:none}}*{box-sizing:border-box}body{background:var(--bg);color:var(--text);margin:0}#app{max-width:640px;padding:max(20px, env(safe-area-inset-top)) 16px max(40px, env(safe-area-inset-bottom));margin:0 auto}h1,h2{margin:0;line-height:1.2}a{color:var(--primary)}.muted{color:var(--muted)}.small-text{font-size:.9rem}.top{margin:8px 0 20px}.top h1{letter-spacing:-.02em;font-size:2rem}.top h1:after{content:"";background:var(--accent);border-radius:3px;width:44px;height:5px;margin-top:8px;display:block}.top p{margin:8px 0 0}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:16px;padding:20px}h2.small{margin-bottom:12px;font-size:1rem}.segmented{background:var(--bg);border-radius:12px;grid-template-columns:repeat(3,1fr);gap:6px;padding:4px;display:grid}.seg{color:var(--text);font:inherit;cursor:pointer;background:0 0;border:0;border-radius:9px;padding:10px 6px;font-size:.9rem}.seg.active{background:var(--primary);color:var(--primary-text);font-weight:600}.lesson header{flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:12px;display:flex}.lesson h2{font-size:1.3rem}.lesson header .muted{font-size:.9rem}.rows{flex-direction:column;margin:0 -8px 14px;display:flex}.row{color:var(--text);border-radius:10px;justify-content:space-between;align-items:center;gap:12px;padding:10px 8px;text-decoration:none;display:flex}.row+.row{border-top:1px solid var(--border)}.row:hover{background:var(--primary-soft)}.row-title .muted{margin-left:4px;font-size:.85rem}.row-meta{color:var(--muted);font-variant-numeric:tabular-nums;flex-shrink:0;align-items:center;gap:8px;font-size:.85rem;display:flex}.bar{background:var(--border);border-radius:3px;width:56px;height:6px;display:block;overflow:hidden}.bar>span{background:var(--ok);border-radius:3px;height:100%;display:block}.btn{border:1.5px solid var(--primary);min-height:44px;color:var(--primary);font:inherit;cursor:pointer;background:0 0;border-radius:12px;justify-content:center;align-items:center;padding:10px 18px;font-weight:600;text-decoration:none;display:inline-flex}.btn:hover{background:var(--primary-soft)}.btn.primary{background:var(--primary);color:var(--primary-text)}.btn.primary:hover{filter:brightness(1.08)}.lesson .btn{width:100%}.link{font:inherit;color:var(--primary);cursor:pointer;background:0 0;border:0;padding:0;text-decoration:underline}:focus-visible{outline:3px solid var(--accent);outline-offset:2px}.foot{text-align:center;margin-top:24px;font-size:.85rem}.practice-top{justify-content:space-between;align-items:center;margin-bottom:10px;display:flex}.back{font-weight:600;text-decoration:none}.practice-top+.bar{border-radius:4px;width:100%;height:8px;margin-bottom:16px}.practice-top+.bar>span{background:var(--primary);transition:width .3s}.session-title{color:var(--muted);margin-bottom:12px;font-size:.95rem;font-weight:600}.practice{flex-direction:column;gap:12px;padding:24px;display:flex}.label{text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin:0;font-size:.8rem;font-weight:700}.prompt{flex-wrap:wrap;align-items:center;gap:8px;font-size:1.75rem;font-weight:700;line-height:1.25;display:flex}.sub{color:var(--muted);margin:-6px 0 0}.ipa{color:var(--muted);font-family:Lucida Sans Unicode,Arial Unicode MS,system-ui,sans-serif}input{width:100%;font:inherit;border:2px solid var(--border);background:var(--bg);color:var(--text);border-radius:12px;padding:12px 14px;font-size:1.25rem}input:focus{border-color:var(--primary);outline:none}input:disabled{opacity:.75}.verb-inputs{grid-template-columns:1fr 1fr;gap:12px;display:grid}.verb-inputs label{color:var(--muted);flex-direction:column;gap:6px;font-size:.9rem;font-weight:600;display:flex}@media (width<=420px){.verb-inputs{grid-template-columns:1fr}.prompt{font-size:1.5rem}}.speak{background:var(--primary-soft);cursor:pointer;vertical-align:middle;border:0;border-radius:50%;flex-shrink:0;width:36px;height:36px;font-size:1rem;line-height:1}.note{background:var(--mark);border-radius:10px;margin:0;padding:10px 14px}.feedback:empty{display:none}.feedback{flex-direction:column;gap:10px;display:flex}.feedback p{margin:0}.status{border-radius:10px;padding:10px 14px;font-size:1.15rem;font-weight:700}.status.ok{color:var(--ok);background:var(--ok-soft)}.status.bad{color:var(--bad);background:var(--bad-soft)}.correct-answer b{font-size:1.15rem}.yours{color:var(--muted);font-size:.9rem}.word-line{flex-wrap:wrap;align-items:center;gap:6px 8px;display:flex}.forms{margin:0;padding-left:20px}.forms .bad b{color:var(--bad)}.forms .ok b{color:var(--ok)}.example{border-left:4px solid var(--accent);background:var(--bg);border-radius:0 10px 10px 0;padding:12px 14px}.example .label{margin-bottom:4px}.ex-en{font-size:1.1rem}.ex-en .speak{width:30px;height:30px;margin-left:4px;font-size:.85rem}.ex-cz{color:var(--muted);font-style:italic}mark{background:var(--mark);color:inherit;border-radius:3px;padding:0 2px;font-weight:700}.kbd-hint{text-align:center;margin:-4px 0 0}@media (hover:none){.kbd-hint{display:none}}.summary{text-align:center;padding:32px 20px}.summary h1{font-size:2rem}.summary .big{font-size:1.2rem}.mistakes{text-align:left;max-width:440px;margin:0 auto 8px;padding-left:20px}.mistakes li{margin-bottom:4px}.actions{flex-wrap:wrap;justify-content:center;gap:10px;margin-top:20px;display:flex}