.quiz-cards{--bg:#f0f2f7;--surface:#ffffff;--surface-2:#f7f8fc;--border:#e4e8f0;--border-focus:#c8cfe0;--hard:#dc3545;--hard-bg:#fff3f4;--hard-border:#fccdd0;--medium:#d97706;--medium-bg:#fffbf0;--medium-border:#fde8b0;--easy:#16a34a;--easy-bg:#f0faf4;--easy-border:#bbf7d0;--blue:#2563eb;--blue-light:#eff4ff;--text-primary:#0f1117;--text-secondary:#4b5568;--text-muted:#9ca3af;--shadow-sm:0 1px 3px rgba(15,17,23,0.06),0 1px 2px rgba(15,17,23,0.04);--shadow-md:0 4px 16px rgba(15,17,23,0.08),0 2px 6px rgba(15,17,23,0.05);--shadow-lg:0 12px 40px rgba(15,17,23,0.12),0 4px 12px rgba(15,17,23,0.06)}.quiz-cards,.quiz-cards *{box-sizing:border-box}.quiz-cards{background:var(--bg);min-height:100vh;font-family:Plus Jakarta Sans,sans-serif;padding:48px 24px 80px;color:var(--text-primary)}.quiz-cards .page-header{max-width:900px;margin:0 auto 40px;display:flex;align-items:flex-end;justify-content:space-between;flex-wrap:wrap;gap:20px;animation:quizCardsFadeDown .5s ease both}.quiz-cards .page-header-left .eyebrow{display:inline-flex;align-items:center;gap:7px;font-size:11.5px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--blue);background:var(--blue-light);padding:5px 12px;border-radius:30px;margin-bottom:14px}.quiz-cards .page-header-left .eyebrow svg{width:13px;height:13px}.quiz-cards .page-header-left h1{font-size:clamp(1.6rem,3.5vw,2.4rem);font-weight:800;color:var(--text-primary);letter-spacing:-.03em;line-height:1.15}.quiz-cards .page-header-left h1 span{color:var(--blue)}.quiz-cards .page-header-left p{margin-top:8px;font-size:14px;color:var(--text-secondary);font-weight:400}.quiz-cards .count-pill{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:14px 24px;text-align:center;box-shadow:var(--shadow-sm)}.quiz-cards .count-pill .num{font-size:2rem;font-weight:800;color:var(--text-primary);letter-spacing:-.04em;line-height:1}.quiz-cards .count-pill .lbl{font-size:11px;color:var(--text-muted);font-weight:500;letter-spacing:.05em;margin-top:3px}.quiz-cards .cards-grid{max-width:900px;margin:0 auto;display:grid;grid-template-columns:repeat(auto-fit,minmax(340px,1fr));gap:20px}.quiz-cards .card{background:var(--surface);border:1px solid var(--border);border-radius:18px;overflow:hidden;box-shadow:var(--shadow-sm);transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;cursor:pointer;animation:quizCardsFadeUp .5s ease both;display:flex;flex-direction:column;text-decoration:none;color:inherit}.quiz-cards .card:first-child{animation-delay:.08s}.quiz-cards .card:nth-child(2){animation-delay:.18s}.quiz-cards .card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--border-focus)}.quiz-cards .card-stripe{height:5px;width:100%}.quiz-cards .card[data-difficulty=hard] .card-stripe,.quiz-cards .card[data-set-type=purple] .card-stripe{background:var(--hard)}.quiz-cards .card[data-difficulty=medium] .card-stripe{background:var(--medium)}.quiz-cards .card[data-difficulty=easy] .card-stripe,.quiz-cards .card[data-set-type=green] .card-stripe{background:var(--easy)}.quiz-cards .card[data-set-type=blue] .card-stripe{background:var(--blue)}.quiz-cards .card-body{padding:26px 26px 22px;flex:1;display:flex;flex-direction:column}.quiz-cards .card-top{display:flex;align-items:flex-start;justify-content:space-between;gap:14px;margin-bottom:20px}.quiz-cards .card-id{font-family:JetBrains Mono,monospace;font-size:10px;color:var(--text-muted);letter-spacing:.1em;margin-bottom:5px;font-weight:500}.quiz-cards .card-title{font-size:1.25rem;font-weight:800;color:var(--text-primary);letter-spacing:-.025em;line-height:1.25}.quiz-cards .badge{flex-shrink:0;display:inline-flex;align-items:center;gap:5px;padding:4px 11px;border-radius:8px;font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;border:1px solid}.quiz-cards .badge-dot{width:5px;height:5px;border-radius:50%}.quiz-cards .card[data-difficulty=hard] .badge{color:var(--hard);background:var(--hard-bg);border-color:var(--hard-border)}.quiz-cards .card[data-difficulty=hard] .badge-dot{background:var(--hard)}.quiz-cards .card[data-difficulty=medium] .badge{color:var(--medium);background:var(--medium-bg);border-color:var(--medium-border)}.quiz-cards .card[data-difficulty=medium] .badge-dot{background:var(--medium)}.quiz-cards .card[data-difficulty=easy] .badge{color:var(--easy);background:var(--easy-bg);border-color:var(--easy-border)}.quiz-cards .card[data-difficulty=easy] .badge-dot{background:var(--easy)}.quiz-cards .stats-row{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:18px}.quiz-cards .stat-box{background:var(--surface-2);border:1px solid var(--border);border-radius:12px;padding:14px 16px;transition:border-color .2s}.quiz-cards .card:hover .stat-box{border-color:var(--border-focus)}.quiz-cards .stat-label{font-size:10.5px;font-weight:600;text-transform:uppercase;letter-spacing:.1em;color:var(--text-muted);margin-bottom:6px;display:flex;align-items:center;gap:5px}.quiz-cards .stat-label svg{width:12px;height:12px}.quiz-cards .stat-value{font-size:1.5rem;font-weight:800;color:var(--text-primary);letter-spacing:-.03em;line-height:1;display:flex;align-items:baseline;gap:4px}.quiz-cards .stat-unit{font-size:12px;font-weight:500;color:var(--text-secondary);letter-spacing:0}.quiz-cards .negative-alert{display:flex;align-items:center;gap:11px;padding:12px 15px;background:var(--hard-bg);border:1px solid var(--hard-border);border-radius:10px;margin-bottom:18px}.quiz-cards .negative-icon{width:32px;height:32px;flex-shrink:0;background:#fde8e8;border-radius:8px;display:flex;align-items:center;justify-content:center}.quiz-cards .negative-icon svg{width:16px;height:16px;color:var(--hard)}.quiz-cards .negative-text{font-size:12.5px;color:#7f1d1d;line-height:1.5;font-weight:500}.quiz-cards .negative-text strong{font-weight:700;font-family:JetBrains Mono,monospace}.quiz-cards .price-box{padding:12px 15px;background:var(--surface-2);border:1px solid var(--border);border-radius:10px;margin-bottom:18px}.quiz-cards .price-row{display:flex;align-items:center;justify-content:space-between;gap:10px}.quiz-cards .price-label{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.1em;color:var(--text-muted)}.quiz-cards .price-values{display:flex;align-items:center;gap:8px}.quiz-cards .price-original{font-size:13px;color:var(--text-muted);text-decoration:line-through;font-family:JetBrains Mono,monospace}.quiz-cards .price-final{font-size:18px;font-weight:800;color:var(--easy);font-family:JetBrains Mono,monospace;letter-spacing:-.02em}.quiz-cards .price-discount{font-size:10px;font-weight:700;color:var(--easy);background:var(--easy-bg);border:1px solid var(--easy-border);padding:2px 6px;border-radius:4px;letter-spacing:.05em}.quiz-cards .divider{height:1px;background:var(--border);margin:0 0 18px}.quiz-cards .card-footer{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto}.quiz-cards .footer-meta{display:flex;flex-direction:column;gap:4px}.quiz-cards .active-badge{display:inline-flex;align-items:center;gap:5px;font-size:11px;font-weight:600;color:var(--easy)}.quiz-cards .active-badge:before{content:"";width:6px;height:6px;border-radius:50%;background:var(--easy);animation:quizCardsBlink 2s ease infinite}@keyframes quizCardsBlink{0%,to{opacity:1}50%{opacity:.3}}.quiz-cards .valid-label{font-size:11.5px;color:var(--text-muted);font-weight:500}.quiz-cards .valid-label span{color:var(--text-secondary);font-family:JetBrains Mono,monospace;font-size:10.5px}.quiz-cards .btn-start{display:inline-flex;align-items:center;gap:8px;padding:11px 20px;border-radius:10px;border:none;font-family:Plus Jakarta Sans,sans-serif;font-size:13px;font-weight:700;cursor:pointer;transition:all .2s ease;white-space:nowrap;color:#fff}.quiz-cards .card[data-difficulty=hard] .btn-start{background:var(--hard);box-shadow:0 3px 10px rgba(220,53,69,.3)}.quiz-cards .card[data-difficulty=medium] .btn-start{background:var(--medium);box-shadow:0 3px 10px rgba(217,119,6,.3)}.quiz-cards .card[data-difficulty=easy] .btn-start{background:var(--easy);box-shadow:0 3px 10px rgba(22,163,74,.3)}.quiz-cards .btn-start:hover{filter:brightness(1.08);transform:scale(1.03)}.quiz-cards .btn-start:active{transform:scale(.97)}.quiz-cards .btn-start svg{width:14px;height:14px;transition:transform .2s}.quiz-cards .btn-start:hover svg{transform:translateX(3px)}@keyframes quizCardsFadeUp{0%{opacity:0;transform:translateY(22px)}to{opacity:1;transform:translateY(0)}}@keyframes quizCardsFadeDown{0%{opacity:0;transform:translateY(-14px)}to{opacity:1;transform:translateY(0)}}.quiz-cards .filter-belongs-to{max-width:900px;margin:0 auto 20px}.quiz-cards .filter-belongs-to-buttons{display:flex;gap:12px;flex-wrap:wrap;justify-content:center;align-items:center}.quiz-cards .filter-btn{padding:10px 28px;font-size:14px;font-weight:600;border:none;border-radius:8px;cursor:pointer;transition:all .3s ease;font-family:Plus Jakarta Sans,sans-serif;display:inline-flex;align-items:center;gap:4px}.quiz-cards .filter-btn:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(102,126,234,.3)}.quiz-cards .filter-btn:active{transform:translateY(0)}.quiz-cards .filter-test-type{max-width:900px;margin:0 auto 28px;border-bottom:2px solid var(--border)}.quiz-cards .filter-test-type-tabs{display:flex;gap:0;flex-wrap:wrap;justify-content:flex-start;overflow-x:auto;-webkit-overflow-scrolling:touch}.quiz-cards .filter-test-type-tabs::-webkit-scrollbar{height:4px}.quiz-cards .filter-test-type-tabs::-webkit-scrollbar-track{background:transparent}.quiz-cards .filter-test-type-tabs::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}.quiz-cards .filter-tab{padding:12px 20px;font-size:14px;font-weight:600;background:transparent;cursor:pointer;transition:all .3s ease;font-family:Plus Jakarta Sans,sans-serif;color:var(--text-secondary);border:none;border-bottom:3px solid transparent;margin-bottom:-2px;position:relative;white-space:nowrap;flex-shrink:0;display:inline-flex;align-items:center;gap:4px}.quiz-cards .filter-tab:hover{color:var(--blue)}.quiz-cards .filter-tab.active{color:var(--blue);border-bottom-color:var(--blue)}@media (max-width:768px){.quiz-cards .filter-belongs-to-buttons{gap:8px}.quiz-cards .filter-btn{padding:8px 20px;font-size:13px}.quiz-cards .filter-test-type-tabs{justify-content:flex-start}.quiz-cards .filter-tab{padding:10px 16px;font-size:13px}}@import url("https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap");.quiz-detail{--bg:#f2f4f8;--surface:#ffffff;--surface-2:#f7f8fc;--border:#e4e8f0;--border-hover:#c5cde0;--blue:#2563eb;--blue-light:#eff4ff;--blue-mid:#dbeafe;--medium:#d97706;--medium-bg:#fffbf0;--medium-border:#fde8b0;--green:#16a34a;--green-bg:#f0faf4;--green-border:#bbf7d0;--red:#dc2626;--red-bg:#fff5f5;--red-border:#fecaca;--amber:#f59e0b;--amber-bg:#fffbeb;--amber-border:#fde68a;--text-primary:#0f172a;--text-secondary:#475569;--text-muted:#94a3b8;--shadow-sm:0 1px 3px rgba(15,23,42,0.06),0 1px 2px rgba(15,23,42,0.04);--shadow-md:0 4px 16px rgba(15,23,42,0.08),0 2px 6px rgba(15,23,42,0.05)}.quiz-detail,.quiz-detail *{box-sizing:border-box}.quiz-detail{background:var(--bg);min-height:100vh;font-family:Plus Jakarta Sans,sans-serif;color:var(--text-primary);padding:0 0 80px}.quiz-detail .topnav{background:var(--surface);border-bottom:1px solid var(--border);padding:0 32px;height:58px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:100;box-shadow:var(--shadow-sm)}.quiz-detail .nav-brand{display:flex;align-items:center;gap:9px;font-weight:800;font-size:15px;color:var(--text-primary);letter-spacing:-.02em;text-decoration:none}.quiz-detail .nav-brand-icon{width:30px;height:30px;background:var(--blue);border-radius:8px;display:flex;align-items:center;justify-content:center}.quiz-detail .nav-brand-icon svg{width:16px;height:16px;color:#fff}.quiz-detail .nav-breadcrumb{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--text-muted);flex-wrap:wrap}.quiz-detail .nav-breadcrumb a{color:var(--text-muted);text-decoration:none}.quiz-detail .nav-breadcrumb a:hover{color:var(--blue)}.quiz-detail .nav-breadcrumb .sep{font-size:16px}.quiz-detail .nav-breadcrumb .current{color:var(--text-secondary);font-weight:600}.quiz-detail .page{max-width:860px;margin:0 auto;padding:40px 20px}.quiz-detail .hero{margin-bottom:28px;animation:quizDetailFadeUp .4s ease both}.quiz-detail .hero-tag{display:inline-flex;align-items:center;gap:6px;font-size:11px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;padding:4px 11px;border-radius:20px;margin-bottom:14px;border:1px solid}.quiz-detail .hero-tag .dot{width:5px;height:5px;border-radius:50%}.quiz-detail .hero[data-difficulty=medium] .hero-tag{color:var(--medium);background:var(--medium-bg);border-color:var(--medium-border)}.quiz-detail .hero[data-difficulty=medium] .hero-tag .dot{background:var(--medium)}.quiz-detail .hero[data-difficulty=hard] .hero-tag{color:var(--red);background:var(--red-bg);border-color:var(--red-border)}.quiz-detail .hero[data-difficulty=hard] .hero-tag .dot{background:var(--red)}.quiz-detail .hero[data-difficulty=easy] .hero-tag{color:var(--green);background:var(--green-bg);border-color:var(--green-border)}.quiz-detail .hero[data-difficulty=easy] .hero-tag .dot{background:var(--green)}.quiz-detail .hero h1{font-size:clamp(1.6rem,3vw,2.2rem);font-weight:800;letter-spacing:-.03em;color:var(--text-primary);line-height:1.15;margin-bottom:8px}.quiz-detail .hero-sub{font-size:14px;color:var(--text-secondary);display:flex;align-items:center;gap:6px}.quiz-detail .hero-sub svg{width:14px;height:14px;color:var(--blue);flex-shrink:0}.quiz-detail .stats-bar{background:var(--surface);border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow-sm);display:grid;grid-template-columns:repeat(3,1fr);overflow:hidden;margin-bottom:24px;animation:quizDetailFadeUp .4s ease .08s both}.quiz-detail .stat-cell{padding:22px 24px;position:relative}.quiz-detail .stat-cell+.stat-cell:before{content:"";position:absolute;left:0;top:16px;bottom:16px;width:1px;background:var(--border)}.quiz-detail .stat-cell-label{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.1em;color:var(--text-muted);margin-bottom:8px;display:flex;align-items:center;gap:5px}.quiz-detail .stat-cell-label svg{width:13px;height:13px}.quiz-detail .stat-cell-value{font-size:1.5rem;font-weight:800;color:var(--text-primary);letter-spacing:-.03em;display:flex;align-items:baseline;gap:5px}.quiz-detail .stat-cell-unit{font-size:13px;font-weight:500;color:var(--text-secondary)}.quiz-detail .stat-cell-sub{margin-top:4px;font-size:11.5px;color:var(--text-muted);font-family:JetBrains Mono,monospace}.quiz-detail .card{background:var(--surface);border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow-sm);overflow:hidden;margin-bottom:20px;animation:quizDetailFadeUp .4s ease both}.quiz-detail .card:nth-of-type(2){animation-delay:.12s}.quiz-detail .card:nth-of-type(3){animation-delay:.2s}.quiz-detail .card:nth-of-type(4){animation-delay:.28s}.quiz-detail .card-header{padding:18px 24px 16px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:10px;background:var(--surface-2)}.quiz-detail .card-header-icon{width:34px;height:34px;border-radius:9px;display:flex;align-items:center;justify-content:center;flex-shrink:0}.quiz-detail .card-header-icon svg{width:17px;height:17px}.quiz-detail .card-header-icon.blue{background:var(--blue-light);color:var(--blue)}.quiz-detail .card-header-icon.amber{background:var(--amber-bg);color:var(--amber)}.quiz-detail .card-header-icon.red{background:var(--red-bg);color:var(--red)}.quiz-detail .card-header-title{font-size:14.5px;font-weight:700;color:var(--text-primary);letter-spacing:-.01em}.quiz-detail .card-header-desc{font-size:12px;color:var(--text-muted);margin-top:1px}.quiz-detail .card-body{padding:22px 24px}.quiz-detail .instr-list{list-style:none;display:flex;flex-direction:column;gap:14px}.quiz-detail .instr-item{display:flex;align-items:flex-start;gap:13px}.quiz-detail .instr-num{width:24px;height:24px;flex-shrink:0;border-radius:7px;background:var(--blue-light);border:1px solid var(--blue-mid);color:var(--blue);font-size:11.5px;font-weight:700;display:flex;align-items:center;justify-content:center;margin-top:1px}.quiz-detail .instr-num.amber{background:var(--amber-bg);border-color:var(--amber-border);color:var(--medium)}.quiz-detail .instr-text{font-size:13.5px;color:var(--text-secondary);line-height:1.6;font-weight:500}.quiz-detail .instr-text strong{color:var(--text-primary);font-weight:700}.quiz-detail .instr-text .tag{display:inline-flex;align-items:center;gap:3px;padding:1px 7px;border-radius:5px;font-size:11.5px;font-weight:700;font-family:JetBrains Mono,monospace}.quiz-detail .tag-red{background:var(--red-bg);color:var(--red);border:1px solid var(--red-border)}.quiz-detail .tag-green{background:var(--green-bg);color:var(--green);border:1px solid var(--green-border)}.quiz-detail 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.scheme-table thead tr{background:var(--surface-2)}.quiz-detail .scheme-table th{padding:10px 16px;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--text-muted);text-align:left;border-bottom:1px solid var(--border)}.quiz-detail .scheme-table td{padding:13px 16px;border-bottom:1px solid var(--border);color:var(--text-secondary);font-weight:500}.quiz-detail .scheme-table tr:last-child td{border-bottom:none}.quiz-detail .scheme-table td:first-child{font-weight:600;color:var(--text-primary)}.quiz-detail .mark-badge{display:inline-flex;align-items:center;gap:4px;padding:3px 10px;border-radius:6px;font-family:JetBrains Mono,monospace;font-size:12px;font-weight:600}.quiz-detail .action-bar{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:20px 24px;display:flex;align-items:center;justify-content:space-between;gap:16px;box-shadow:var(--shadow-sm);animation:quizDetailFadeUp .4s ease .32s both;flex-wrap:wrap}.quiz-detail .action-bar-left{display:flex;align-items:center;gap:11px}.quiz-detail .action-bar-left svg{width:18px;height:18px;color:var(--blue);flex-shrink:0}.quiz-detail .action-bar-left p{font-size:13px;color:var(--text-secondary);font-weight:500;line-height:1.5}.quiz-detail .action-bar-left p strong{color:var(--text-primary);font-weight:700}.quiz-detail .action-btns{display:flex;align-items:center;gap:10px;flex-shrink:0;flex-wrap:wrap}.quiz-detail .btn{display:inline-flex;align-items:center;gap:7px;padding:11px 22px;border-radius:10px;font-family:Plus Jakarta Sans,sans-serif;font-size:13.5px;font-weight:700;cursor:pointer;transition:all .18s ease;border:none;letter-spacing:-.01em;text-decoration:none}.quiz-detail .btn svg{width:15px;height:15px;transition:transform .18s}.quiz-detail .btn-ghost{background:var(--surface-2);color:var(--text-secondary);border:1px solid var(--border)}.quiz-detail .btn-ghost:hover{background:var(--bg);border-color:var(--border-hover);color:var(--text-primary)}.quiz-detail .btn-primary{background:var(--blue);color:#fff;box-shadow:0 3px 12px rgba(37,99,235,.3)}.quiz-detail .btn-primary:hover{background:#1d4ed8;box-shadow:0 5px 18px rgba(37,99,235,.38);transform:translateY(-1px)}.quiz-detail .btn-primary:hover svg{transform:translateX(3px)}.quiz-detail .btn-primary:active{transform:scale(.97)}.quiz-detail .btn:disabled,.quiz-detail .btn[aria-disabled=true]{opacity:.5;cursor:not-allowed;pointer-events:none}.quiz-detail .confirm-row{display:flex;align-items:center;gap:10px;padding:14px 18px;background:var(--blue-light);border:1px solid var(--blue-mid);border-radius:10px;margin-bottom:20px;cursor:pointer;-webkit-user-select:none;-moz-user-select:none;user-select:none;animation:quizDetailFadeUp .4s ease .28s both}.quiz-detail .confirm-row input[type=checkbox]{width:17px;height:17px;accent-color:var(--blue);cursor:pointer;flex-shrink:0}.quiz-detail .confirm-row label{font-size:13px;color:#1e40af;font-weight:600;cursor:pointer;line-height:1.5}@keyframes quizDetailFadeUp{0%{opacity:0;transform:translateY(18px)}to{opacity:1;transform:translateY(0)}}@media (max-width:760px){.quiz-detail .topnav{padding:0 16px}.quiz-detail .stats-bar{grid-template-columns:1fr}.quiz-detail .stat-cell+.stat-cell:before{display:none}}