@font-face{font-family:Local;src:local("Inter"),local("Arial")}*{box-sizing:border-box} :root{color-scheme:light;--bg:#f5f6f2;--surface:#fff;--ink:#202f2c;--muted:#69756f;--line:#e1e6df;--green:#174f46;--soft:#e9f0e7;--accent:#dfedac;--warning:#8b5916;--red:#a13939;--shadow:0 8px 25px #1b403805} :root[data-theme=dark]{color-scheme:dark;--bg:#131c19;--surface:#1b2823;--ink:#e7efe8;--muted:#a2b2a7;--line:#34463c;--green:#9dd7bc;--soft:#283d30;--accent:#c3d797;--warning:#ecc581;--red:#f4a5a5;--shadow:none}body{margin:0;font:16px/1.6 Local,system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--ink)}button,input,textarea,select{font:inherit}button,a,input,textarea,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer;min-height:46px;border:1px solid var(--line);border-radius:10px;padding:10px 18px;background:var(--surface);color:var(--ink);font-weight:600}button:hover{border-color:var(--green);background:var(--soft)}button:disabled{opacity:.5;cursor:wait}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid #78a37d;outline-offset:3px}a{color:var(--green)}[hidden]{display:none!important}.shell{display:flex;min-height:100dvh}aside{width:265px;padding:36px 22px 24px;border-right:1px solid var(--line);background:var(--surface);position:fixed;height:100dvh;display:flex;flex-direction:column;z-index:2}.brand{display:flex;gap:12px;align-items:center;color:var(--ink);text-decoration:none;font-size:19px;font-weight:750;letter-spacing:-.4px}.brand small{display:block;font-size:8px;letter-spacing:1.9px;color:var(--muted);margin-top:2px}.brand-icon{background:#174f46;color:white;width:45px;height:45px;border-radius:12px;display:flex;justify-content:center;align-items:center;font-size:23px}.brand-icon span{font-size:15px;margin-top:-13px}nav{margin-top:47px;display:grid;gap:6px}nav button{text-align:left;border:none;background:transparent;color:var(--muted);font-size:19px;padding:11px 14px;display:flex;gap:13px;align-items:center}nav button span{font-size:14px;font-weight:550}nav button.active{background:var(--soft);color:var(--green)}.nav-separator{height:1px;background:var(--line);margin:17px 10px}.sidebar-bottom{margin-top:auto;padding:25px 10px 0;color:var(--muted);font-size:11px}.language{font-size:12px;display:flex;align-items:center;gap:9px}.language span{border:1px solid var(--line);border-radius:4px;padding:1px 5px;font-size:10px}.workspace{margin-left:265px;flex:1;min-width:0}header{height:90px;padding:0 48px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);font-size:13px;color:var(--muted)}.header-actions{display:flex;gap:17px;align-items:center}.private{font-size:11px}.private:first-letter{color:var(--green)}.icon-button{padding:4px 12px;font-size:21px;background:transparent;border:none}.quiet{background:transparent;border:none;color:var(--muted);padding:8px}main{max-width:1160px;margin:auto;padding:38px 48px 60px;min-height:calc(100dvh - 150px)}h1{font-size:32px;line-height:1.25;letter-spacing:-1.2px;font-weight:650;margin:6px 0 12px}h2{font-size:19px;letter-spacing:-.4px;line-height:1.4;margin:0 0 12px}h3{font-size:16px;margin:0 0 7px}.eyebrow{color:var(--green);text-transform:uppercase;letter-spacing:1.7px;font-size:10px;font-weight:750}.muted{color:var(--muted)}p{margin:6px 0 18px}.intro{display:flex;justify-content:space-between;align-items:center;margin-bottom:29px}.date{text-align:right;font-size:12px;color:var(--muted)}.hero{background:#174f46;color:#fff;display:grid;grid-template-columns:1fr 210px;border-radius:18px;padding:32px 36px;position:relative;overflow:hidden;margin-bottom:24px}.hero .eyebrow{color:#c5d8b1}.hero h2{font-size:29px;letter-spacing:-1px;margin:10px 0}.hero p{color:#cad9d0;font-size:14px;max-width:420px}.primary{background:var(--green);color:var(--surface);border-color:var(--green)}.primary:hover{background:var(--green);filter:brightness(1.12);color:var(--surface)}.hero .primary{background:#dfedac;color:#233f30;border:0;margin-top:7px}.hero small{display:block;color:#c5d8b1;font-size:11px;margin-top:12px}.hero-art{display:flex;align-items:center;justify-content:center;position:relative}.speech{font-size:39px;border:1px solid #a8c69860;border-radius:20px 20px 4px 20px;padding:13px 27px;transform:rotate(-7deg);color:#dfedac;line-height:1.2}.speech small{font-size:11px;letter-spacing:.6px;transform:rotate(7deg);margin:8px 0 0}.mini-bubble{position:absolute;right:0;bottom:25px;background:#dfedac;color:#174f46;border:5px solid #174f46;border-radius:50%;height:56px;width:56px;display:grid;place-items:center;font-size:24px}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:32px}.stat{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:19px 22px;box-shadow:var(--shadow)}.stat .stat-head{display:flex;justify-content:space-between;color:var(--muted);font-size:12px}.stat strong{display:block;font-size:29px;font-weight:600;line-height:1.5;margin-top:8px;letter-spacing:-1px}.stat small{font-size:11px;color:var(--muted)}.section-head{display:flex;justify-content:space-between;align-items:center;margin:23px 0 17px}.section-head h2{margin:0}.tag{font-size:10px;color:var(--green);border:1px solid var(--line);border-radius:6px;padding:3px 7px;background:var(--soft)}.mode-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:15px}.mode-card{display:flex;gap:16px;align-items:flex-start;text-align:left;padding:23px;border-radius:13px;box-shadow:var(--shadow);font-weight:400;position:relative}.mode-card h3{padding-right:24px}.mode-card p{font-size:12px;color:var(--muted);margin:0 0 10px;line-height:1.7}.mode-card .arrow{position:absolute;right:20px;top:24px;color:var(--muted)}.mode-icon{width:42px;height:42px;flex-shrink:0;border-radius:11px;background:var(--soft);color:var(--green);display:grid;place-items:center;font-size:22px}.mode-card:nth-child(2) .mode-icon{background:#eff0fb;color:#6674ac}.mode-card:nth-child(3) .mode-icon{background:#faf0df;color:#9e7437}.mode-card:nth-child(4) .mode-icon{background:#f6e9e4;color:#b36e55}.below-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:24px}.panel{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:25px;box-shadow:var(--shadow)}.panel p{font-size:13px}.progress-track{height:7px;border-radius:9px;background:var(--soft);overflow:hidden;margin:12px 0}.progress-track progress{width:100%;height:7px;display:block;accent-color:var(--green)}.category-row{display:flex;justify-content:space-between;font-size:12px;padding:10px 0;border-bottom:1px solid var(--line)}.category-row:last-child{border:0}.tip{color:var(--muted);font-size:12px;margin-top:20px}footer{font-size:10px;padding:20px 48px;border-top:1px solid var(--line);display:flex;justify-content:space-between;color:var(--muted)}.login{max-width:480px;margin:40px auto}.login form{display:grid;gap:15px;margin-top:25px}label{font-size:13px;font-weight:650;display:block}input,textarea,select{width:100%;border:1px solid var(--line);border-radius:10px;padding:12px;color:var(--ink);background:var(--surface);margin-top:6px}textarea{min-height:125px;resize:vertical;font-size:18px}.form-help{font-size:12px;color:var(--muted)}.error{color:var(--red);background:var(--surface);border-left:3px solid var(--red);padding:12px;font-size:13px;margin:15px 0}.lesson-wrap{max-width:740px;margin:auto}.lesson-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}.lesson-top p{margin:0;font-size:12px}.question{font-size:25px;line-height:1.5;letter-spacing:-.6px;margin:20px 0 26px}.actions{display:flex;flex-wrap:wrap;align-items:center;gap:9px;margin-top:15px}.feedback{border-left:4px solid var(--green);margin:24px 0;padding:20px;background:var(--soft);border-radius:0 10px 10px 0}.feedback h3{font-size:14px;color:var(--green)}.feedback .corrected{font-size:21px;margin:12px 0}.feedback p{font-size:14px}.hint{background:var(--soft);padding:13px;border-radius:8px;margin-top:16px;font-size:14px}.timer{font-variant-numeric:tabular-nums;color:var(--warning);font-size:14px}.settings-stack{display:grid;gap:20px;max-width:800px}.danger{color:var(--red)}.check-label{display:flex;gap:10px;align-items:center;margin:12px 0;font-weight:400}.check-label input{width:20px;height:20px;margin:0}table{border-collapse:collapse;width:100%;font-size:12px}td,th{text-align:left;border-bottom:1px solid var(--line);padding:11px 8px}.table-scroll{overflow:auto}.sentence{padding:17px 0;border-bottom:1px solid var(--line)}.sentence p{margin:0 0 6px}.sentence small{color:var(--muted)}.chart{display:flex;gap:8px;align-items:end;height:110px;margin:25px 0 10px}.bar-cell{flex:1;text-align:center;font-size:9px;color:var(--muted)}.bar-cell meter{display:block;width:100%;height:65px;accent-color:var(--green)}#notice{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:var(--ink);color:var(--surface);padding:14px 22px;border-radius:12px;z-index:10;max-width:90vw;font-size:13px}.loading{opacity:.7}.large-number{font-size:40px;font-weight:650;color:var(--green)}.completion{text-align:center;padding:40px 25px}.completion .mode-icon{margin:0 auto 20px}.inline-link{font-size:12px}.voice-note{font-size:11px;color:var(--muted);margin-top:9px}.recording{color:var(--red);border-color:var(--red)}
@media(min-width:1500px){main{padding-top:50px}.hero{padding:40px}}@media(max-width:1100px){aside{width:220px;padding:30px 15px}.workspace{margin-left:220px}header{padding:0 28px}main{padding:30px 28px}.hero{grid-template-columns:1fr 150px;padding:28px}.hero-art .speech{font-size:30px;padding:15px}.mode-card{padding:19px;gap:12px}.stats{gap:10px}.stat{padding:17px}.brand{font-size:16px}.brand small{font-size:7px}}@media(max-width:760px){.shell{display:block}aside{width:100%;height:auto;position:static;padding:18px 20px;border-right:0;border-bottom:1px solid var(--line)}.brand{font-size:19px}.brand small{font-size:8px}nav{margin-top:20px;display:flex;overflow:auto;gap:6px;padding-bottom:3px}nav button{white-space:nowrap;padding:8px 12px;gap:7px}nav button span{font-size:12px}.nav-separator,.sidebar-bottom{display:none}.workspace{margin:0}header{height:62px;padding:0 20px}.private{display:none}.header-actions{gap:4px}main{padding:26px 20px 40px}h1{font-size:28px}.date{display:none}.intro{margin-bottom:24px}.hero{padding:26px;grid-template-columns:1fr}.hero h2{font-size:26px}.hero-art{display:none}.stats{grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:24px}.stat{padding:13px 10px}.stat strong{font-size:25px}.stat .stat-head{font-size:10px}.stat small{font-size:9px}.mode-grid,.below-grid{grid-template-columns:1fr}.mode-card{padding:21px}.mode-card p{font-size:13px}.panel{padding:22px}.question{font-size:23px}.login{margin:15px auto}.actions button{flex:1}.actions .quiet{flex:auto}footer{padding:18px 20px;font-size:9px;gap:18px}.login form button{width:100%}.section-head{gap:10px}.section-head .muted{font-size:11px}textarea{font-size:17px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}