*{box-sizing:border-box}body{margin:0;background:#f4f7f6;color:#17243a;font:16px system-ui,sans-serif}header{background:#17243a;color:white;padding:17px max(20px,calc((100% - 900px)/2));display:flex;justify-content:space-between}header b,header small{display:block}header small{color:#bdc9d9;font-size:.8rem}main{max-width:900px;margin:24px auto;padding:0 16px}.card{background:#fff;border:1px solid #dce3e9;border-radius:13px;padding:20px;margin-bottom:16px;box-shadow:0 2px 8px #00000008}h1{font-size:1.5rem}h2{font-size:1.1rem;margin-top:0}input,select,button{font:inherit;padding:10px;border-radius:8px;border:1px solid #bdc9d5}input,select{width:100%;background:#fff}button{border:0;background:#17243a;color:#fff;font-weight:700;cursor:pointer}.secondary{background:#e9eef3;color:#26364c}.controls,.form{display:flex;gap:9px;flex-wrap:wrap}.controls select{flex:1}.form input{flex:1 1 190px}.auth{max-width:460px;margin:70px auto}.auth input{margin:5px 0}.auth button{margin:5px 5px 0 0}.error{color:#b42318}.stats{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;margin-bottom:16px}.stats div{background:#fff;border:1px solid #dce3e9;padding:12px;border-radius:10px}.stats b{font-size:1.4rem;display:block}.stats small{color:#667085}.session{text-align:center;background:#f7fbf8}.session h2{font-size:clamp(2rem,7vw,4rem);overflow-wrap:anywhere}.session p{font-size:1.2rem;white-space:pre-line}.wrong{background:#b42318}.right{background:#087443;margin-left:8px}.item{border-top:1px solid #e5e9ed;padding:12px 0;display:flex;gap:10px;justify-content:space-between}.item small{color:#667085}.tag{background:#e9eef3;padding:3px 7px;border-radius:12px;font-size:.8rem}.delete{color:#b42318;background:transparent;padding:3px}@media(max-width:580px){.stats{grid-template-columns:repeat(2,1fr)}.item{display:block}.item button{margin-top:8px}}