:root{--bg: var(--tg-theme-bg-color, #ffffff);--text: var(--tg-theme-text-color, #1a1a1a);--hint: var(--tg-theme-hint-color, #8a8a8a);--card: var(--tg-theme-secondary-bg-color, #f2f4f7);--accent: var(--tg-theme-button-color, #2f7de0);--accent-text: var(--tg-theme-button-text-color, #ffffff);--ok: #2fa96b;--no: #e0503f;--radius: 16px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased}.app{max-width:640px;margin:0 auto;min-height:100vh;display:flex;flex-direction:column;padding-bottom:76px}.app-header{padding:14px 16px;position:sticky;top:0;background:var(--bg);z-index:5}.logo{font-weight:700;font-size:17px}main{flex:1;padding:0 16px}.screen{display:flex;flex-direction:column;gap:14px;padding-top:4px}.screen.center{align-items:center;text-align:center;padding-top:40px}.card{background:var(--card);border-radius:var(--radius);padding:16px}.card.error{color:var(--no)}.muted{color:var(--hint)}.small{font-size:13px}.hero{display:flex;justify-content:center;padding:12px 0}.ring{width:150px;height:150px;border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;background:radial-gradient(closest-side,var(--bg) 79%,transparent 80% 100%),conic-gradient(var(--accent) calc(var(--p, 0) * 1%),var(--card) 0)}.ring-value{font-size:34px;font-weight:800}.ring-label{font-size:12px;color:var(--hint)}.stat-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.stat{display:flex;flex-direction:column;gap:4px;align-items:flex-start}.stat-num{font-size:20px;font-weight:700}.btn{border:none;border-radius:var(--radius);padding:14px 16px;font-size:16px;font-weight:600;cursor:pointer;width:100%}.btn.big{padding:16px;font-size:17px}.btn.primary{background:var(--accent);color:var(--accent-text)}.btn.secondary{background:var(--card);color:var(--text)}.lesson-head h2{font-size:20px;margin-top:6px}.badge{display:inline-block;background:var(--accent);color:var(--accent-text);font-size:12px;font-weight:600;padding:4px 10px;border-radius:20px}.theory{line-height:1.6;font-size:15px;white-space:pre-wrap}.theory b{color:var(--text)}.quiz{display:flex;flex-direction:column;gap:12px}.progress-bar{height:6px;background:var(--card);border-radius:6px;overflow:hidden}.progress-fill{height:100%;background:var(--accent);transition:width .3s}.prompt{font-size:18px;line-height:1.4}.options{display:flex;flex-direction:column;gap:10px}.option{text-align:left;background:var(--card);color:var(--text);border:2px solid transparent;border-radius:14px;padding:14px;font-size:16px;cursor:pointer;transition:.15s}.option:disabled{cursor:default}.option.correct{border-color:var(--ok);background:color-mix(in srgb,var(--ok) 15%,var(--card))}.option.wrong{border-color:var(--no);background:color-mix(in srgb,var(--no) 15%,var(--card))}.option.dim{opacity:.55}.feedback{border-radius:14px;padding:14px;display:flex;flex-direction:column;gap:10px}.feedback.ok{background:color-mix(in srgb,var(--ok) 12%,var(--card))}.feedback.no{background:color-mix(in srgb,var(--no) 12%,var(--card))}.feedback p{font-size:14px;line-height:1.5;color:var(--text)}.review-title{font-size:20px}.exam-badge{font-size:52px}.exam-meta{display:flex;justify-content:space-between;align-items:center}.small-badge{font-size:11px;padding:3px 8px}.ring.pass{--ring-c: var(--ok)}.ring.fail{--ring-c: var(--no)}.ring.pass,.ring.fail{background:radial-gradient(closest-side,var(--bg) 79%,transparent 80% 100%),conic-gradient(var(--ring-c) calc(var(--p, 0) * 1%),var(--card) 0)}.subtest-list{display:flex;flex-direction:column;gap:12px;width:100%;margin-top:8px}.subtest-row{display:flex;flex-direction:column;gap:6px}.subtest-head{display:flex;justify-content:space-between;font-size:14px}.ok-text{color:var(--ok);font-weight:600}.no-text{color:var(--no);font-weight:600}.progress-fill.low{background:var(--no)}.lock{padding-top:60px;gap:16px}.lock-icon{font-size:56px}.lock h2{font-size:22px}.lock-form{display:flex;flex-direction:column;gap:12px;width:100%;max-width:320px}.lock-input{padding:14px 16px;font-size:17px;text-align:center;border-radius:14px;border:2px solid var(--card);background:var(--card);color:var(--text);outline:none}.lock-input:focus{border-color:var(--accent)}.lock-error{color:var(--no);font-size:14px}.tabbar{position:fixed;bottom:0;left:0;right:0;max-width:640px;margin:0 auto;display:flex;background:var(--bg);border-top:1px solid var(--card);padding:8px 0}.tab{flex:1;background:none;border:none;cursor:pointer;display:flex;flex-direction:column;align-items:center;gap:2px;font-size:20px;color:var(--hint)}.tab span{font-size:11px}.tab.active{color:var(--accent)}