body{margin:0;font-family:Segoe UI,Arial,sans-serif;background:#f4f7fb;color:#172033}.quiz-app{display:grid;grid-template-columns:minmax(520px,1fr) 300px;min-height:auto}.quiz-side{display:none;background:#0e1a2d;color:#fff;padding:18px 14px;position:sticky;top:0;height:100vh;overflow:auto}.brand{font-size:20px;font-weight:800}.brand small{display:block;color:#9eb0cb;font-size:12px;margin-top:3px}.side-search input{width:100%;margin:16px 0;background:#17283f;border:1px solid #2d405d;color:#fff;border-radius:10px;padding:10px;box-sizing:border-box}.side-link{display:block;color:#dce7f7;text-decoration:none;padding:7px 8px;border-radius:8px;font-size:12px}.side-link:hover{background:#203552}.num{color:#7fa0cf;margin-right:6px}.quiz-main{padding:28px 30px;max-width:1000px;width:100%;margin:auto}.crumbs{font-size:13px;color:#72809a;margin-bottom:12px}.crumbs a{color:#1463e9}.hero{background:linear-gradient(135deg,#152c59,#203e89);color:white;border-radius:16px;padding:24px;margin-bottom:18px}.hero .badge{background:white;color:#165ad6;padding:5px 9px;border-radius:99px;font-size:11px;font-weight:700}.hero h1{margin:9px 0 6px;font-size:27px}.progress-box,.question-card,.right-card,.result{background:#fff;border:1px solid #dfe5ef;border-radius:14px}.progress-box{padding:15px 18px;margin-bottom:16px}.progress-top{display:flex;justify-content:space-between;font-size:13px;color:#59667b}.bar{height:9px;background:#e8edf4;border-radius:99px;overflow:hidden;margin-top:9px}.bar span{display:block;height:100%;background:#1767e8;width:0}.question-card{padding:25px}.q-head{display:flex;gap:12px;align-items:center;color:#65738a;font-size:13px}.q-number{background:#1a65e7;color:white;border-radius:9px;padding:8px 11px;font-weight:800}.q-text{font-size:20px;line-height:1.45;font-weight:700;margin:18px 0}.q-text img{display:block;max-width:100%;height:auto;margin:15px auto;border:1px solid #dfe5ef;border-radius:10px}.option{display:flex;gap:12px;border:1px solid #dfe5ef;border-radius:11px;padding:13px;margin:10px 0;cursor:pointer}.option.correct{border-color:#5dc987;background:#effaf3}.option.wrong{border-color:#ef8a8a;background:#fff4f4}.option input{margin-top:3px}.feedback{margin-top:18px;padding:15px;border-radius:11px;line-height:1.5}.ok{background:#effaf3;border:1px solid #9adbb4}.bad{background:#fff4f4;border:1px solid #efb0b0}.actions{display:flex;justify-content:space-between;gap:10px;margin-top:20px}.btn{border:1px solid #dfe5ef;background:#fff;border-radius:10px;padding:11px 16px;cursor:pointer;font-weight:700}.primary{background:#1463e9;color:white;border-color:#1463e9}.btn:disabled{opacity:.45}.quiz-right{padding:28px 18px 28px 0}.right-card{padding:16px;margin-bottom:14px}.grid{display:grid;grid-template-columns:repeat(5,1fr);gap:7px}.qjump{border:1px solid #dfe5ef;background:white;border-radius:8px;padding:8px;cursor:pointer}.qjump.done{background:#e9f8ee;color:#19713a}.qjump.current{background:#1a65e7;color:white}.big-score{font-size:38px;font-weight:900;color:#1d9b52}@media(max-width:1050px){.quiz-app{grid-template-columns:minmax(0,1fr)}.quiz-right{display:none}}@media(max-width:720px){.quiz-app{display:block}.quiz-side{position:static;height:auto}.quiz-side .side-section{display:none}.quiz-main{padding:16px 12px}.q-text{font-size:18px}.question-card{padding:17px}}
.answer-line{margin-top:8px}.explanation{margin-top:10px;padding-top:10px;border-top:1px solid rgba(0,0,0,.08)}
.quiz-right{position:sticky;top:18px;align-self:start}.grid{grid-template-columns:repeat(5,1fr)}
@media(min-width:1051px){.quiz-app{grid-template-columns:minmax(0,1fr) 280px}.quiz-main{max-width:920px}.quiz-right{display:block}}
@media(max-width:1050px){.quiz-right{display:none}}