:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--bg:#f6f8f7;--surface:#fff;--text:#162e2a;--muted:#6e7d78;--border:#e2e9e5;--accent:#147d68;--soft:#e8f4ed;--danger:#b53f4c;--danger-soft:#fff0f1;background:var(--tg-theme-bg-color,var(--bg));color:var(--tg-theme-text-color,var(--text));font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--bg:#111d1a;--surface:#1b2b26;--text:#e6f1eb;--muted:#a1b4aa;--border:#30443a;--accent:#70d3af;--soft:#243d32;--danger:#ff9ca6;--danger-soft:#43282c}}:root[data-theme=dark]{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--bg:#111d1a;--surface:#1b2b26;--text:#e6f1eb;--muted:#a1b4aa;--border:#30443a;--accent:#70d3af;--soft:#243d32;--danger:#ff9ca6;--danger-soft:#43282c}*{box-sizing:border-box}body{margin:0}a{color:inherit;text-decoration:none}button,input{font:inherit}a,button{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:default;opacity:.55}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:3px}.shell{max-width:640px;min-height:100dvh;padding:max(0px,var(--tg-content-safe-area-inset-top,0px)) max(20px,var(--tg-safe-area-inset-right,0px)) calc(100px + env(safe-area-inset-bottom)) max(20px,var(--tg-safe-area-inset-left,0px));margin:auto}.topbar{border-bottom:1px solid var(--border);justify-content:space-between;height:85px;margin-bottom:28px}.brand,.topbar{align-items:center;display:flex}.brand{letter-spacing:-1px;gap:9px;font-size:23px;font-weight:800}.brand-icon{color:var(--accent);font-size:35px}.brand small{letter-spacing:2px;color:var(--accent);align-self:flex-end;margin-bottom:5px;font-size:9px}.profile-link{font-size:29px}.hero{padding:20px 0 28px}.eyebrow{letter-spacing:2px;color:var(--accent);font-size:10px;font-weight:800}h1{letter-spacing:-1.3px;overflow-wrap:anywhere;margin:16px 0;font-size:34px;line-height:1.18}.hero h1{font-size:46px}.hero em{color:var(--accent);font-family:Georgia,serif;font-weight:400}h2{letter-spacing:-.5px;font-size:19px}p{white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.65}.muted,small{color:var(--muted)}.pill{background:var(--soft);color:var(--accent);border-radius:30px;margin-top:12px;padding:9px 14px;font-size:12px;font-weight:700;display:inline-block}.section{margin:26px 0}.row,.section-heading{justify-content:space-between;align-items:center;gap:14px;display:flex}.section-heading>span{color:var(--muted);font-size:12px}.card{background:var(--tg-theme-secondary-bg-color,var(--surface));border:1px solid var(--border);border-radius:16px;margin-bottom:12px;padding:20px}.card small,.card strong{display:block}.card strong{font-size:16px}.card small{margin-top:6px;font-size:12px}.grow{flex:1}.subject-number{color:var(--accent);background:var(--soft);border-radius:12px;padding:14px;font-size:14px;font-weight:700}.subject-card:hover{border-color:var(--accent)}.bottom-nav{width:min(100%,640px);padding:12px 16px calc(12px + max(env(safe-area-inset-bottom),var(--tg-content-safe-area-inset-bottom,0px)));border-top:1px solid var(--border);background:var(--tg-theme-bg-color,var(--surface));z-index:20;justify-content:space-around;display:flex;position:fixed;bottom:0;left:50%;transform:translate(-50%)}.bottom-nav a{color:var(--muted);border-radius:30px;align-items:center;gap:8px;padding:9px 26px;display:flex}.bottom-nav a.active{color:var(--accent);background:var(--soft)}.bottom-nav span{font-size:12px;font-weight:700}.notice{background:var(--soft);border:1px solid var(--border);border-radius:12px;margin:14px 0;padding:16px;font-size:13px;line-height:1.7}.notice a{color:var(--accent);text-decoration:underline;display:block}.danger{background:var(--danger-soft);color:var(--danger)}.empty{color:var(--muted);padding:45px 15px;line-height:1.8}.empty,.primary,.secondary{text-align:center;font-size:14px}.primary,.secondary{border:0;border-radius:12px;padding:16px 20px;font-weight:700;display:inline-block}.primary{color:#fff;background:#147d68}.secondary{color:var(--accent);background:var(--soft)}.full{width:100%;margin:14px 0;display:block}.text-button{color:var(--muted);background:0 0;border:0;padding:12px;font-size:13px;text-decoration:underline}.mode-select{border:0;margin:28px 0;padding:0}.mode-select legend{margin-bottom:16px;font-weight:700}.mode-select label{border:1px solid var(--border);background:var(--surface);cursor:pointer;border-radius:14px;gap:14px;margin-bottom:12px;padding:20px;display:flex}.mode-select small,.mode-select strong{display:block}.mode-select small{margin-top:7px;font-size:12px;line-height:1.6}.chosen{border-color:var(--accent)!important;background:var(--soft)!important}input{accent-color:var(--accent)}.back-link{color:var(--accent);font-size:13px}.progress-label{color:var(--muted);justify-content:space-between;margin:25px 0 10px;font-size:12px;display:flex}progress{background:var(--border);border:0;border-radius:6px;width:100%;height:6px;overflow:hidden}progress::-webkit-progress-bar{background:var(--border)}progress::-webkit-progress-value{background:var(--accent)}progress::-moz-progress-bar{background:var(--accent)}.question-title{letter-spacing:-.5px;white-space:pre-wrap;margin-top:28px;font-size:25px;line-height:1.5}.timer{font-variant-numeric:tabular-nums;color:var(--accent)}.urgent{color:var(--danger)}.options{gap:12px;margin:24px 0;display:grid}.option{text-align:left;border:1px solid var(--border);background:var(--surface);width:100%;color:inherit;white-space:pre-wrap;overflow-wrap:anywhere;border-radius:14px;align-items:center;gap:14px;padding:17px;line-height:1.5;display:flex}.option:disabled{opacity:1}.option-letter{border:1px solid var(--border);border-radius:8px;flex-shrink:0;place-items:center;width:30px;height:30px;font-size:13px;font-weight:700;display:grid}.correct{color:var(--accent);background:var(--soft)!important;border-color:var(--accent)!important}.wrong{color:var(--danger);background:var(--danger-soft)!important;border-color:var(--danger)!important}.feedback{background:var(--soft);border-radius:14px;margin:22px 0;padding:20px}.feedback h2{margin-top:0}.feedback p{font-size:13px}.feedback.incorrect{border:1px solid var(--border)}.result-hero{text-align:center;padding:16px 0 30px}.score-circle{border:8px solid var(--accent);letter-spacing:-2px;border-radius:50%;justify-content:center;align-items:center;width:148px;height:148px;margin:28px auto;font-size:45px;font-weight:800;display:flex}.score-circle small{letter-spacing:0;font-size:20px}.review summary{cursor:pointer;font-size:14px;font-weight:650;line-height:1.7}.review p{font-size:13px}.review-option{border:1px solid var(--border);border-radius:8px;padding:10px}.review-option small{display:inline}.right-text{color:var(--accent)}.wrong-text{color:var(--danger)}.explanation{border-top:1px solid var(--border);padding-top:16px}.stats-grid{grid-template-columns:1fr 1fr;gap:14px;margin-top:25px;display:grid}.stats-grid strong{font-size:30px}.spinner{border:2px solid var(--border);border-top-color:var(--accent);border-radius:50%;width:16px;height:16px;margin-right:8px;animation:1s linear infinite spin;display:inline-block}@keyframes spin{to{transform:rotate(1turn)}}@media (prefers-reduced-motion:reduce){.spinner{animation:none}}@media (width<=360px){.shell{padding-left:14px;padding-right:14px}.hero h1{font-size:39px}.row{gap:8px}.primary,.secondary{padding:14px}}