:root{--text:#6b6375;--text-h:#08060d;--bg:#fff;--border:#e5e4e7;--code-bg:#f4f3ec;--accent:#aa3bff;--accent-bg:#aa3bff1a;--accent-border:#aa3bff80;--social-bg:#f4f3ec80;--shadow:#0000001a 0 10px 15px -3px, #0000000d 0 4px 6px -2px;--sans:system-ui, "Segoe UI", Roboto, sans-serif;--heading:system-ui, "Segoe UI", Roboto, sans-serif;--mono:ui-monospace, Consolas, monospace;font:18px/145% var(--sans);letter-spacing:.18px;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;color:var(--text);background:var(--bg);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial}}@media (width<=1024px){:root{font-size:16px}}@media (prefers-color-scheme:dark){:root{--text:#9ca3af;--text-h:#f3f4f6;--bg:#16171d;--border:#2e303a;--code-bg:#1f2028;--accent:#c084fc;--accent-bg:#c084fc26;--accent-border:#c084fc80;--social-bg:#2f303a80;--shadow:#0006 0 10px 15px -3px, #00000040 0 4px 6px -2px}#social .button-icon{filter:invert()brightness(2)}}body{margin:0}#root{text-align:center;border-inline:1px solid var(--border);box-sizing:border-box;flex-direction:column;width:1126px;max-width:100%;min-height:100svh;margin:0 auto;display:flex}h1,h2{font-family:var(--heading);color:var(--text-h);font-weight:500}h1{letter-spacing:-1.68px;margin:32px 0;font-size:56px}@media (width<=1024px){h1{margin:20px 0;font-size:36px}}h2{letter-spacing:-.24px;margin:0 0 8px;font-size:24px;line-height:118%}@media (width<=1024px){h2{font-size:20px}}p{margin:0}code,.counter{font-family:var(--mono);color:var(--text-h);border-radius:4px;display:inline-flex}code{background:var(--code-bg);padding:4px 8px;font-size:15px;line-height:135%}*{box-sizing:border-box;margin:0;padding:0}body{background:#f0f4f8;min-height:100vh;font-family:Segoe UI,sans-serif}.app{text-align:center;max-width:600px;margin:0 auto;padding:40px 20px}h1{color:#1a1a2e;margin-bottom:10px;font-size:2rem}h2{color:#444;margin-bottom:30px;font-size:1.3rem}.topics{flex-direction:column;gap:12px;display:flex}.topics button{color:#fff;cursor:pointer;background:#3b5bdb;border:none;border-radius:12px;padding:16px;font-size:1.1rem}.topics button:hover{background:#2f4ac0}.card{background:#fff;border-radius:16px;flex-direction:column;gap:20px;padding:32px;display:flex;box-shadow:0 4px 20px #00000014}.situation{color:#666;font-size:.95rem;font-style:italic;line-height:1.6}.question{color:#1a1a2e;font-size:1.2rem;font-weight:600;line-height:1.5}.answer{color:#2b7a0b;font-size:1.15rem;font-weight:600;line-height:1.5}.translation{color:#888;font-size:.95rem;font-style:italic}.progress{color:#999;margin-bottom:20px;font-size:.9rem}.back{color:#3b5bdb;cursor:pointer;background:0 0;border:none;margin-bottom:20px;font-size:.95rem;display:block}.hint{color:#888;cursor:pointer;background:0 0;border:1px solid #ddd;border-radius:8px;padding:8px 16px;font-size:.9rem}.scores{grid-template-columns:1fr 1fr;gap:10px;margin-top:10px;display:grid}.scores button{cursor:pointer;color:#fff;border:none;border-radius:10px;width:100%;padding:12px 8px;font-size:.95rem}.learning{background:#1971c2}.bad{background:#e03131}.ok{background:#f08c00}.good{background:#2b8a3e}.scores button:hover{opacity:.85}.admin{text-align:left}.admin h2{text-align:center;margin-bottom:30px}.admin h3{color:#1a1a2e;margin-bottom:12px}.admin-section{background:#fff;border-radius:16px;flex-direction:column;gap:12px;margin-bottom:24px;padding:24px;display:flex;box-shadow:0 4px 20px #00000014}.admin-section input,.admin-section textarea,.admin-section select{border:1px solid #ddd;border-radius:8px;width:100%;padding:10px 14px;font-family:Segoe UI,sans-serif;font-size:.95rem}.admin-section textarea{resize:vertical;min-height:80px}.admin-section button{color:#fff;cursor:pointer;background:#3b5bdb;border:none;border-radius:10px;padding:12px;font-size:1rem}.admin-section button:hover{background:#2f4ac0}.admin-message{color:#2b8a3e;text-align:center;background:#d3f9d8;border-radius:10px;margin-bottom:20px;padding:12px 16px;font-weight:600}.admin-link{color:#888;cursor:pointer;background:0 0;border:1px solid #ddd;border-radius:10px;margin-top:20px;padding:10px 20px;font-size:.9rem}.admin-link:hover{color:#3b5bdb;border-color:#3b5bdb}.hint-text{color:#888;margin-bottom:20px;font-size:.95rem}.lesson-link{color:#fff;cursor:pointer;background:#2b8a3e;border:none;border-radius:12px;width:100%;margin-top:20px;padding:14px 28px;font-size:1.1rem;display:block}.lesson-link:hover{background:#237032}.lesson-header{justify-content:space-between;align-items:center;margin-bottom:20px;display:flex}.reset-btn{color:#888;cursor:pointer;background:0 0;border:1px solid #ddd;border-radius:8px;padding:8px 16px;font-size:.9rem}.reset-btn:hover{color:#e03131;border-color:#e03131}.admin-login{background:#fff;border-radius:16px;flex-direction:column;gap:12px;max-width:300px;margin:0 auto;padding:32px;display:flex;box-shadow:0 4px 20px #00000014}.admin-login h3{text-align:center;color:#1a1a2e}.admin-login input{border:1px solid #ddd;border-radius:8px;padding:10px 14px;font-size:.95rem}.admin-login button{color:#fff;cursor:pointer;background:#3b5bdb;border:none;border-radius:10px;padding:12px;font-size:1rem}.auth-error{color:#e03131;text-align:center;font-size:.9rem}