:root{--ink:#14213d;--muted:#667085;--blue:#3563e9;--canvas:#f5f7fb}*{box-sizing:border-box}body{font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;background:var(--canvas);color:var(--ink)}.brand-mark{width:38px;height:38px;display:grid;place-items:center;background:var(--ink);color:#fff;border-radius:12px}.hero{background:radial-gradient(circle at 85% 20%,#e5eaff 0,transparent 30%),linear-gradient(180deg,#fff 0,#f5f7fb 100%)}.eyebrow{font-size:.72rem;font-weight:800;letter-spacing:.14em;color:var(--blue)}h1 span{color:var(--blue)}.streak-card{background:var(--ink);color:#fff;border-radius:24px;padding:22px;display:flex;justify-content:space-between;align-items:center;box-shadow:0 20px 45px #14213d25}.streak-card small,.streak-card strong{display:block}.streak-card strong{font-size:1.15rem;margin-top:5px}.streak-card>span{font-size:2.2rem}.filter-bar{display:flex;justify-content:space-between;gap:16px;align-items:center}.filter-group{background:#fff;border:1px solid #e7eaf0;border-radius:14px;padding:4px}.filter{border:0;background:transparent;padding:9px 16px;border-radius:10px;font-weight:700;color:var(--muted)}.filter.active{background:var(--ink);color:#fff}.search{max-width:320px;width:100%}.search i{position:absolute;left:14px;top:11px;color:var(--muted)}.search input{padding-left:40px;border-radius:14px;border-color:#e7eaf0}.subject-card{height:100%;background:#fff;border:1px solid #e7eaf0;border-radius:26px;padding:24px;overflow:hidden;position:relative;box-shadow:0 12px 30px rgba(20,33,61,.05)}.subject-card:before{content:"";position:absolute;width:170px;height:170px;border-radius:50%;right:-80px;top:-80px;opacity:.16}.subject-card.blue:before{background:#3563e9}.subject-card.violet:before{background:#7c3aed}.subject-card.orange:before{background:#f59e0b}.level-pill{background:#f1f4f9;border-radius:20px;padding:6px 10px;font-size:.7rem;font-weight:800}.subject-icon{font-size:2rem}.exam-list{margin:22px -10px -10px}.exam-list a{display:flex;justify-content:space-between;align-items:center;padding:15px 12px;border-top:1px solid #edf0f5;text-decoration:none;color:var(--ink);border-radius:12px}.exam-list a:hover{background:#f7f9ff;color:var(--blue)}.exam-list small{display:block;color:var(--muted);margin-top:3px}.quiz-shell{display:grid;grid-template-columns:280px minmax(0,1fr);gap:42px;align-items:start}.quiz-shell aside{position:sticky;top:100px}.back-link{text-decoration:none;color:var(--muted);font-weight:700}.quiz-stat{display:flex;gap:12px;align-items:center;background:#fff;border:1px solid #e7eaf0;padding:16px;border-radius:18px}.quiz-stat i{font-size:1.5rem;color:var(--blue)}.quiz-stat small,.quiz-stat strong{display:block}.progress{height:7px}.progress-bar{background:var(--blue)}.question-card{background:#fff;border:1px solid #e4e8ef;border-radius:24px;padding:26px;margin-bottom:20px}.question-number{color:var(--blue);font-size:.75rem;font-weight:800;letter-spacing:.1em;margin-bottom:12px}.options{display:grid;gap:10px}.options label{display:flex;align-items:center;gap:12px;padding:14px;border:1px solid #e4e8ef;border-radius:15px;cursor:pointer;transition:.2s}.options label:has(input:checked){border-color:var(--blue);background:#f2f5ff;box-shadow:0 0 0 2px #3563e920}.options input{position:absolute;opacity:0}.option-key{width:32px;height:32px;display:grid;place-items:center;border-radius:9px;background:#f0f2f6;font-weight:800}.check{margin-left:auto;color:var(--blue);opacity:0}.options label:has(input:checked) .check{opacity:1}.btn-submit{width:100%;border:0;border-radius:17px;padding:17px;background:var(--blue);color:#fff;font-weight:800;box-shadow:0 12px 24px #3563e940}.result-hero{display:flex;align-items:center;gap:28px;background:#fff;border:1px solid #e4e8ef;border-radius:28px;padding:34px}.result-ring{flex:0 0 104px;width:104px;height:104px;border-radius:50%;display:grid;place-items:center;background:conic-gradient(#3563e9 0 82%,#e9edf5 82%);border:10px solid #f0f3fa;color:#fff;font-size:1.7rem;font-weight:900;box-shadow:inset 0 0 0 40px #3563e9}.review-list{display:grid;gap:14px}.review-card{background:#fff;border:1px solid #e4e8ef;border-left:5px solid;padding:20px;border-radius:16px}.review-card.correct{border-left-color:#22a06b}.review-card.wrong{border-left-color:#ef4444}.status{font-size:.72rem;font-weight:800;border-radius:20px;padding:5px 9px;background:#f1f4f8;white-space:nowrap}@media(max-width:767px){.filter-bar{align-items:stretch;flex-direction:column}.search{max-width:none}.quiz-shell{grid-template-columns:1fr;gap:20px}.quiz-shell aside{position:static}.result-hero{align-items:flex-start;flex-direction:column}.hero .display-4{font-size:2.35rem}}