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.quiz-option-marker{border-color:var(--accent);background:var(--accent);color:var(--bg)}.quiz-option.correct .quiz-option-marker{border-color:var(--green);background:var(--green);color:#fff}.quiz-option.incorrect .quiz-option-marker{border-color:var(--red);background:var(--red);color:#fff}.quiz-explanation{margin-top:16px;padding:14px 16px;background:var(--bg-surface);border-radius:var(--radius-sm);font-size:14px;color:var(--text-secondary);line-height:1.6;border-left:3px solid var(--green)}.quiz-explanation.wrong{border-left-color:var(--red)}.quiz-results{text-align:center;padding:40px}.quiz-results .score-circle{width:120px;height:120px;border-radius:50%;border:4px solid var(--border);display:flex;flex-direction:column;align-items:center;justify-content:center;margin:0 auto 24px}.quiz-results .score-circle.pass{border-color:var(--green)}.quiz-results 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var(--border);border-radius:var(--radius-sm)}.leaderboard-item.current{border-color:var(--accent);background:var(--bg-card-hover)}.leaderboard-rank{font-size:18px;font-weight:700;width:32px;text-align:center;color:var(--text-muted)}.leaderboard-item:nth-child(1) .leaderboard-rank{color:var(--yellow)}.leaderboard-item:nth-child(2) .leaderboard-rank{color:var(--accent-dim)}.leaderboard-item:nth-child(3) .leaderboard-rank{color:var(--orange)}.leaderboard-avatar{width:36px;height:36px;border-radius:50%;background:var(--bg-surface);display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:600;color:var(--text-muted)}.leaderboard-info{flex:1}.leaderboard-info h4{font-size:14px;font-weight:600}.leaderboard-info p{font-size:12px;color:var(--text-muted)}.leaderboard-points{font-size:15px;font-weight:700;color:var(--yellow)}.profile-header{display:flex;align-items:center;gap:24px;margin-bottom:32px}.profile-avatar{width:80px;height:80px;border-radius:50%;background:var(--bg-surface);border:2px solid var(--border-light);display:flex;align-items:center;justify-content:center;font-size:28px;font-weight:700;color:var(--text-muted)}.profile-info h2{font-size:22px;font-weight:700}.profile-info p{font-size:14px;color:var(--text-secondary)}.cert-badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:20px;font-size:12px;font-weight:600;margin-top:8px}.cert-badge.l1{background:#3b82f626;color:var(--blue);border:1px solid rgba(59,130,246,.3)}.cert-badge.l2{background:#a855f726;color:var(--purple);border:1px solid rgba(168,85,247,.3)}.section-title{font-size:18px;font-weight:700;margin-bottom:16px;letter-spacing:-.3px}.redemption-list{display:flex;flex-direction:column;gap:8px}.redemption-item{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);font-size:14px}.redemption-item .cost{color:var(--red);font-weight:600}.redemption-item .date{color:var(--text-muted);font-size:12px}.toast{position:fixed;bottom:24px;right:24px;padding:14px 20px;background:var(--bg-card);border:1px solid var(--green);border-radius:var(--radius-sm);font-size:14px;color:var(--green);font-weight:600;box-shadow:var(--shadow-lg);z-index:1000;animation:slideUp .3s ease,fadeOut .3s ease 2.7s}@keyframes slideUp{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}@keyframes 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var(--transition)}.auth-tab:hover{color:var(--text-secondary)}.auth-tab.active{color:var(--accent);border-bottom-color:var(--accent)}.auth-error{padding:10px 14px;background:#ef44441a;border:1px solid rgba(239,68,68,.2);border-radius:var(--radius-sm);color:var(--red);font-size:13px;margin-bottom:16px}.sidebar-logout{margin-top:12px;padding:8px 12px;width:100%;background:none;border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text-muted);font-size:13px;cursor:pointer;display:flex;align-items:center;gap:8px;justify-content:center;transition:all var(--transition)}.sidebar-logout:hover{border-color:var(--red);color:var(--red);background:#ef44440d}.practical-tasks-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-bottom:32px}.practical-task-card{position:relative;overflow:hidden;padding:24px}.practical-task-card-accent{position:absolute;top:0;left:0;right:0;height:100%;pointer-events:none}.practical-task-card-header{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:12px;position:relative}.practical-task-card-icon{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:22px}.practical-task-complete-badge{display:flex;align-items:center;gap:4px;font-size:12px;font-weight:600;color:var(--green);background:#22c55e1a;padding:4px 10px;border-radius:20px}.practical-task-card h3{font-size:17px;font-weight:700;margin-bottom:6px;position:relative}.practical-task-card p{font-size:13px;color:var(--text-secondary);line-height:1.5;margin-bottom:14px;position:relative}.practical-task-card-meta{display:flex;gap:16px;font-size:12px;color:var(--text-muted);margin-bottom:14px;position:relative}.practical-task-card-meta span{display:flex;align-items:center;gap:4px}.practical-subtask-list{display:flex;flex-direction:column;gap:10px;margin-top:24px}.practical-subtask-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);transition:all var(--transition)}.practical-subtask-card.completed{border-color:var(--green);border-left:3px solid var(--green)}.practical-subtask-card.expanded{border-color:var(--pt-color, var(--border-light))}.practical-subtask-header{display:flex;align-items:center;gap:14px;padding:16px 18px;cursor:pointer;transition:background var(--transition)}.practical-subtask-header:hover{background:var(--bg-card-hover)}.practical-subtask-info{flex:1;min-width:0}.practical-subtask-info h4{font-size:15px;font-weight:600;margin-bottom:2px}.practical-subtask-info p{font-size:13px;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.practical-subtask-chevron{transition:transform .2s ease;flex-shrink:0}.practical-subtask-chevron.rotated{transform:rotate(90deg)}.practical-subtask-body{padding:0 18px 20px;border-top:1px solid var(--border)}.practical-task-link{display:inline-flex;align-items:center;gap:8px;padding:10px 18px;background:var(--pt-color, var(--blue));color:#fff;border-radius:var(--radius-sm);font-size:14px;font-weight:600;text-decoration:none;margin:16px 0;transition:all var(--transition)}.practical-task-link:hover{opacity:.9;transform:translateY(-1px)}.practical-verification{margin-top:20px;padding:20px;background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius)}.practical-verification-header{display:flex;align-items:center;gap:8px;font-weight:700;font-size:15px;margin-bottom:6px}.practical-verification-desc{font-size:13px;color:var(--text-secondary);margin-bottom:16px;line-height:1.5}.practical-verification-field{margin-bottom:14px}.practical-verification-field label{display:block;font-size:13px;font-weight:600;color:var(--text-secondary);margin-bottom:6px}.practical-textarea{resize:vertical;min-height:70px;line-height:1.5}.practical-verification-done{margin-top:20px}.practical-verification-done-badge{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;background:#22c55e1a;border:1px solid rgba(34,197,94,.2);border-radius:var(--radius-sm);color:var(--green);font-size:14px;font-weight:600;margin-bottom:14px}.practical-verification-submitted{padding:14px;background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-sm)}.practical-submitted-field{margin-bottom:10px}.practical-submitted-field:last-child{margin-bottom:0}.practical-submitted-label{display:block;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;color:var(--text-muted);margin-bottom:3px}.practical-submitted-value{display:block;font-size:13px;color:var(--text-secondary);line-height:1.5;white-space:pre-wrap}@media(max-width:1024px){.stats-grid{grid-template-columns:repeat(2,1fr)}.chapters-grid,.practical-tasks-grid{grid-template-columns:1fr}.rewards-grid{grid-template-columns:repeat(2,1fr)}.achievements-grid{grid-template-columns:1fr}}@media(max-width:768px){.sidebar{display:none}.main-content{margin-left:0;padding:20px}.rewards-grid,.practical-tasks-grid{grid-template-columns:1fr}}.admin-badge{display:inline-flex;align-items:center;gap:4px;padding:2px 8px;background:#ef444426;border:1px solid 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ease}.admin-search-bar{display:flex;gap:12px;margin-bottom:20px;align-items:center}.admin-select{padding:10px 30px 10px 14px;background:var(--bg-input);border:1px solid var(--border-light);border-radius:var(--radius);color:var(--text);font-size:13px;outline:none;cursor:pointer;transition:border-color .15s ease;-webkit-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23666' viewBox='0 0 24 24'%3E%3Cpath d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 10px center}.admin-select:focus{border-color:var(--accent)}.admin-bar-chart{display:flex;flex-direction:column;gap:12px}.admin-bar-row{display:flex;align-items:center;gap:12px}.admin-bar-label{width:200px;font-size:13px;color:var(--text-secondary);flex-shrink:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.admin-bar-track{flex:1;height:24px;background:var(--border);border-radius:4px;overflow:hidden;position:relative}.admin-bar-fill{height:100%;border-radius:4px;transition:width .5s ease;display:flex;align-items:center;padding-left:8px;font-size:11px;font-weight:600;color:#fff;min-width:0}.admin-bar-value{width:70px;text-align:right;font-size:13px;font-weight:600;color:var(--text);flex-shrink:0}.admin-point-control{display:flex;align-items:center;gap:8px}.admin-filters{display:flex;gap:12px;margin-bottom:20px;flex-wrap:wrap}.admin-danger-zone{margin-top:40px;padding:20px;border:1px solid rgba(239,68,68,.3);border-radius:var(--radius);background:#ef444408}.admin-danger-zone h3{color:var(--red);font-size:15px;margin-bottom:12px}.btn-danger{background:var(--red)!important;color:#fff!important;border-color:var(--red)!important}@media(max-width:1024px){.admin-bar-label{width:150px}.admin-table td,.admin-table th{padding:8px 10px;font-size:12px}}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--border-light)}