:root{--bg: #f4f7fc;--card: #ffffff;--text: #1e293b;--muted: #64748b;--primary: #4f6df5;--primary-soft: #e9edff;--border: #e5e7eb;--danger: #ef4444;--radius: 0px}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial;background:var(--bg);color:var(--text)}a{color:inherit;text-decoration:none}.container{width:100%;padding:16px}@media(min-width:1024px){.container{max-width:1100px;margin:0 auto;padding:24px}}.card{background:var(--card);border:1px solid var(--border);padding:16px}.header{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;background:var(--card);border-bottom:1px solid var(--border)}.muted{color:var(--muted);font-size:13px}.input,.textarea,select{width:100%;padding:12px;font-size:14px;border:1px solid var(--border);background:#fff;color:var(--text);outline:none}.textarea{min-height:96px;resize:vertical}.btn{border:1px solid var(--border);background:#fff;color:var(--text);padding:10px 14px;font-size:14px;font-weight:500;cursor:pointer}.btn:hover{background:#f8fafc}.btn:disabled{opacity:.6;cursor:not-allowed}.btnPrimary{background:var(--primary);border-color:var(--primary)}.grid{display:grid;gap:12px}.grid2{display:grid;gap:12px;grid-template-columns:1fr}.hr{height:1px;background:var(--border);margin:16px 0}.row{display:flex;align-items:center;gap:8px}.right{margin-left:auto}.questionCounter{font-size:13px;color:var(--muted);margin-bottom:8px}.questionText{font-size:18px;font-weight:500;line-height:1.4;margin-bottom:16px}.option{display:flex;align-items:center;gap:12px;border:1px solid var(--border);background:#fff;padding:14px;margin-bottom:12px;cursor:pointer}.optionSelected{border-color:var(--primary);background:var(--primary-soft)}.optionRadio{width:18px;height:18px;border:2px solid var(--border);border-radius:50%}.optionSelected .optionRadio{background:var(--primary);border-color:var(--primary)}.optionText{font-size:15px}.quizFooter{position:fixed;bottom:0;left:0;right:0;background:var(--card);border-top:1px solid var(--border);padding:12px 16px;z-index:20}.withFooter{padding-bottom:96px}@media(min-width:768px){.withFooter{max-width:520px;margin:0 auto}.quizFooter{max-width:520px;margin:0 auto;left:50%;transform:translate(-50%)}.grid2{grid-template-columns:1fr 1fr}}