:root{--bg-deep: #f8fafc;--bg-surface: #ffffff;--bg-surface-light: #f1f5f9;--accent-gold: #4f46e5;--accent-gold-glow: rgba(79, 70, 229, .15);--accent-blue: #06b6d4;--accent-blue-glow: rgba(6, 182, 212, .15);--text-primary: #0f172a;--text-secondary: #64748b;--success: #10b981;--error: #ef4444;--accent-success: #10b981;--accent-error: #ef4444;--glass-bg: rgba(255, 255, 255, .7);--glass-border: rgba(226, 232, 240, .8);--glass-shadow: 0 10px 30px 0 rgba(148, 163, 184, .12);--font-heading: "Inter", sans-serif;--font-body: "Inter", sans-serif;--transition-fast: .2s ease;--transition-slow: .4s cubic-bezier(.4, 0, .2, 1)}[data-theme=dark]{--bg-deep: #0f172a;--bg-surface: #1e293b;--bg-surface-light: #334155;--text-primary: #f8fafc;--text-secondary: #94a3b8;--glass-bg: rgba(30, 41, 59, .7);--glass-border: rgba(51, 65, 85, .8);--glass-shadow: 0 10px 30px 0 rgba(0, 0, 0, .4)}*{margin:0;padding:0;box-sizing:border-box}body{background-color:var(--bg-deep);color:var(--text-primary);font-family:var(--font-body);line-height:1.6;overflow-x:hidden;-webkit-font-smoothing:antialiased}h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);font-weight:700;color:var(--text-primary)}h1{font-size:clamp(1.75rem,4vw,2.5rem)}h2{font-size:clamp(1.5rem,3.5vw,2rem)}h3{font-size:clamp(1.25rem,3vw,1.75rem)}p,li{font-size:clamp(.95rem,1.5vw,1rem)}a{color:var(--accent-blue);text-decoration:none;transition:var(--transition-fast)}a:hover{color:var(--text-primary)}button{cursor:pointer;border:none;outline:none;background:none;font-family:inherit}.glass{background:var(--glass-bg);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--glass-border);box-shadow:var(--glass-shadow);border-radius:16px}.glow-gold{box-shadow:0 0 15px var(--accent-gold-glow)}.glow-blue{box-shadow:0 0 15px var(--accent-blue-glow)}.container{max-width:1200px;margin:0 auto;padding:0 2rem}.flex-center{display:flex;align-items:center;justify-content:center}.flex-between{display:flex;align-items:center;justify-content:space-between}.grid-2{display:grid;grid-template-columns:repeat(2,1fr)}.grid-12{display:grid;grid-template-columns:repeat(12,1fr)}@media (max-width: 768px){.grid-2,.grid-12{grid-template-columns:1fr}.col-3,.col-9{grid-column:span 1}}.col-3{grid-column:span 3}.col-9{grid-column:span 9}.btn,.btn-primary,.btn-secondary,.btn-outline,.btn-danger{padding:.75rem 1.5rem;border-radius:12px;font-weight:700;transition:all .3s cubic-bezier(.4,0,.2,1);display:inline-flex;align-items:center;justify-content:center;gap:.75rem;font-size:.95rem;cursor:pointer;border:1px solid transparent;white-space:nowrap;-webkit-user-select:none;user-select:none;font-family:inherit}.btn-primary{background:var(--accent-gold);color:#fff;box-shadow:0 4px 14px var(--accent-gold-glow)}.btn-primary:hover:not(:disabled){background:#3730a3;color:#fff;transform:translateY(-2px);box-shadow:0 6px 20px var(--accent-gold-glow)}.btn-secondary{background:#fffc;border:1px solid var(--glass-border);color:var(--text-primary);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);box-shadow:0 2px 8px #94a3b80d}.btn-secondary:hover:not(:disabled){background:#fffffff2;border-color:var(--accent-gold);transform:translateY(-2px);box-shadow:0 5px 15px #94a3b81f}.btn-outline{border:1px solid rgba(79,70,229,.25);color:var(--accent-gold);background:transparent}.btn-outline:hover:not(:disabled){background:#4f46e50d;border-color:var(--accent-gold);color:var(--accent-gold);transform:translateY(-2px)}.btn-danger{background:#ef44441a;border:1px solid rgba(239,68,68,.2);color:#ff6b6b}.btn-danger:hover:not(:disabled){background:#ef444433;border-color:#ef4444;transform:translateY(-2px);box-shadow:0 5px 15px #ef444433}.btn:disabled{opacity:.4;cursor:not-allowed;transform:none!important}.label{display:block;font-size:.85rem;color:var(--text-secondary);margin-bottom:.5rem;font-weight:600}.glass-input{background:#fff9!important;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border:1px solid var(--glass-border)!important;border-radius:16px!important;padding:1rem 1.25rem!important;color:var(--text-primary)!important;outline:none;transition:all .2s cubic-bezier(.4,0,.2,1);font-family:inherit;box-shadow:inset 0 2px 4px #94a3b80a,0 4px 12px #94a3b805}.glass-input::placeholder{color:#64748b80!important}.glass-input:focus{border-color:var(--accent-gold)!important;background:#fffffff2!important;box-shadow:0 8px 30px #4f46e514,0 0 0 4px var(--accent-gold-glow)!important;transform:translateY(-1px)}.card-hover{transition:var(--transition-slow)}.card-hover:hover{transform:translateY(-8px) scale(1.015);border-color:var(--accent-gold);box-shadow:0 20px 40px #94a3b81f,0 0 20px var(--accent-gold-glow)}.exercise-container{margin-bottom:2rem}.glow-green{box-shadow:0 0 15px #10b9814d;border-color:#10b981!important}.glow-red{box-shadow:0 0 15px #ef44444d;border-color:#ef4444!important}.option-btn{display:flex;align-items:center;width:100%;padding:1.25rem 1.75rem;border-radius:16px;background:#ffffff0a;border:1px solid rgba(255,255,255,.08);color:var(--text-primary);font-size:1.15rem;font-weight:500;transition:all .3s cubic-bezier(.23,1,.32,1);position:relative;overflow:hidden;box-shadow:0 4px 15px #0000001a}.option-btn:hover:not(:disabled){background:#ffffff1a;border-color:#fff3;transform:translate(8px) scale(1.01);box-shadow:0 8px 25px #0003}.option-btn.selected{background:linear-gradient(135deg,#d4af3726,#d4af370d);border-color:var(--accent-gold);box-shadow:0 0 30px var(--accent-gold-glow);transform:translate(12px) scale(1.02)}.option-btn.correct{background:linear-gradient(135deg,#10b98133,#10b9810d);border-color:var(--success);box-shadow:0 0 30px #10b98133}.option-btn.incorrect{background:linear-gradient(135deg,#ef444433,#ef44440d);border-color:var(--error);box-shadow:0 0 30px #ef444433}.option-btn.selected-true{background:linear-gradient(135deg,#10b98126,#10b9810d);border-color:var(--success)}.option-btn.selected-false{background:linear-gradient(135deg,#ef444426,#ef44440d);border-color:var(--error)}.option-indicator{width:12px;height:12px;border-radius:50%;border:2px solid var(--glass-border);margin-right:1.25rem;transition:all .2s ease;flex-shrink:0}.selected .option-indicator{border-color:var(--accent-gold);background:var(--accent-gold);box-shadow:0 0 10px var(--accent-gold)}.selected-true .option-indicator{border-color:var(--success);background:var(--success);box-shadow:0 0 10px var(--success)}.selected-false .option-indicator{border-color:var(--error);background:var(--error);box-shadow:0 0 10px var(--error)}.matching-item{width:100%;text-align:left;padding:1.25rem;border-radius:16px;background:#ffffff08;border:1px solid var(--glass-border);transition:all .3s cubic-bezier(.23,1,.32,1);cursor:pointer;position:relative;font-size:1.1rem}.matching-item:hover:not(:disabled){background:#ffffff14;border-color:var(--accent-blue);transform:translateY(-2px)}.matching-item.selected{background:#3b82f61a!important;border-color:var(--accent-blue)!important;box-shadow:0 0 20px var(--accent-blue-glow)}.matching-item.matched{background:#d4af371a!important;border-color:var(--accent-gold)!important;color:var(--accent-gold);transform:scale(.98)}.glass-slider{-webkit-appearance:none;width:100%;height:6px;background:#ffffff1a;border-radius:5px;outline:none;margin:1rem 0}.glass-slider::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:20px;height:20px;background:var(--accent-gold);border-radius:50%;cursor:pointer;box-shadow:0 0 10px var(--accent-gold-glow);transition:var(--transition-fast)}.glass-slider::-webkit-slider-thumb:hover{transform:scale(1.2);box-shadow:0 0 20px var(--accent-gold)}.matching-item.correct{border-color:var(--success)!important;background:#10b9811a!important}.matching-item.incorrect{border-color:var(--error)!important;background:#ef44441a!important}.matching-item:disabled{cursor:default}.fade-in{animation:fadeIn .5s ease-out}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.markdown-content{color:var(--text-primary)!important}.markdown-content h1,.markdown-content h2,.markdown-content h3,.markdown-content h4{margin-top:1.5rem;margin-bottom:.75rem;color:var(--accent-gold);font-weight:800}.markdown-content h1{font-size:1.6rem;border-bottom:1px solid var(--glass-border);padding-bottom:.4rem}.markdown-content h2{font-size:1.35rem}.markdown-content h3{font-size:1.15rem}.markdown-content p{margin-bottom:.85rem;line-height:1.7;color:var(--text-primary)!important}.markdown-content p:last-child{margin-bottom:0}.markdown-content ul,.markdown-content ol{margin-left:1.25rem;margin-bottom:.85rem}.markdown-content li{margin-bottom:.25rem;color:var(--text-primary)!important}.markdown-content strong{font-weight:700;color:inherit}.markdown-content em{font-style:italic}.markdown-content code{background:#4f46e50d!important;padding:.2rem .4rem!important;border-radius:6px!important;font-family:SFMono-Regular,Consolas,Liberation Mono,Menlo,monospace!important;font-size:.85em!important;border:1px solid rgba(79,70,229,.12)!important;color:#db2777!important}.markdown-content table{width:100%;border-collapse:collapse;margin:1.5rem 0;font-size:.95rem;overflow:hidden;border-radius:12px;border:1px solid var(--glass-border);background:#ffffff05;box-shadow:0 4px 30px #0000001a}.markdown-content th{background:#ffffff0f;color:var(--accent-gold);font-weight:700;text-align:left;padding:.8rem 1rem;border-bottom:2px solid var(--glass-border)}.markdown-content td{padding:.8rem 1rem;border-bottom:1px solid rgba(255,255,255,.05);color:var(--text-primary);line-height:1.5}.markdown-content tr:last-child td{border-bottom:none}.markdown-content tr:nth-child(2n){background:#ffffff03}.markdown-content tr:hover{background:#ffffff08}.text-block-quote{background:linear-gradient(135deg,#4f46e514,#4f46e505)!important;border-left:5px solid var(--accent-gold)!important;font-style:italic}.text-block-rule{background:linear-gradient(135deg,#06b6d414,#06b6d405)!important;border-left:5px solid var(--accent-blue)!important;box-shadow:0 4px 20px #06b6d40d}.text-block-remember{background:linear-gradient(135deg,#f59e0b14,#f59e0b05)!important;border-left:5px solid #f59e0b!important;box-shadow:0 4px 20px #f59e0b0d}.text-block-word{background:linear-gradient(135deg,#8b5cf614,#8b5cf605)!important;border-left:5px solid #8b5cf6!important;box-shadow:0 4px 20px #8b5cf60d}.text-block-mistake{background:linear-gradient(135deg,#ef444414,#ef444405)!important;border-left:5px solid var(--error)!important;box-shadow:0 4px 20px #ef44440d}.text-block-header{display:flex;align-items:center;gap:.6rem;margin-bottom:.75rem;font-weight:800;font-size:.85rem;text-transform:uppercase;letter-spacing:.05em}.text-block-body{font-size:1.05rem;line-height:1.7}.card-image-zoom{transition:transform .6s cubic-bezier(.16,1,.3,1)!important}.glass:hover .card-image-zoom{transform:scale(1.06)}.glass input,.glass textarea,.glass select,.glass-input,.glass select option{color:var(--text-primary)!important}.sidebar-nav::-webkit-scrollbar{width:5px}.sidebar-nav::-webkit-scrollbar-track{background:transparent}.sidebar-nav::-webkit-scrollbar-thumb{background:#4f46e526;border-radius:99px;transition:background var(--transition-fast)}.sidebar-nav::-webkit-scrollbar-thumb:hover{background:#4f46e559}.sidebar-nav{scrollbar-width:thin;scrollbar-color:rgba(79,70,229,.15) transparent}.hide-scrollbar::-webkit-scrollbar{display:none!important}.hide-scrollbar{-ms-overflow-style:none!important;scrollbar-width:none!important}@keyframes shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.animate-spin,.spin{animation:spin 1s linear infinite}.skeleton-shimmer{background:linear-gradient(90deg,#94a3b80f 25%,#94a3b829 37%,#94a3b80f 63%);background-size:200% 100%;animation:shimmer 1.5s infinite linear}.skeleton-card{border-radius:2rem;overflow:hidden;background:var(--glass-bg);border:1px solid var(--glass-border);display:flex;flex-direction:column;height:100%;box-shadow:var(--glass-shadow)}.skeleton-image{height:220px;width:100%}.skeleton-content{padding:2rem;flex:1;display:flex;flex-direction:column;gap:1rem}.skeleton-title{height:1.75rem;width:70%;border-radius:.5rem}.skeleton-text{height:1rem;width:100%;border-radius:.25rem}.skeleton-chip{height:1.5rem;width:3rem;border-radius:.5rem;display:inline-block}.skeleton-button{height:2.75rem;width:100%;border-radius:1.25rem}input[type=checkbox]{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:1.25rem;height:1.25rem;min-width:1.25rem;min-height:1.25rem;border:2px solid rgba(79,70,229,.4);border-radius:6px;background:#ffffff0d;cursor:pointer;display:inline-grid;place-content:center;position:relative;transition:all .2s cubic-bezier(.4,0,.2,1);outline:none;margin:0;vertical-align:middle}input[type=checkbox]:before{content:"";width:.65rem;height:.65rem;transform:scale(0);transition:.12s transform ease-in-out;box-shadow:inset 1em 1em #fff;transform-origin:center;clip-path:polygon(14% 44%,0 65%,50% 100%,100% 16%,80% 0%,43% 62%)}input[type=checkbox]:checked{background:var(--accent-gold);border-color:var(--accent-gold);box-shadow:0 0 10px #4f46e566}input[type=checkbox]:checked:before{transform:scale(1)}input[type=checkbox]:focus{border-color:var(--accent-gold);box-shadow:0 0 0 3px #4f46e533}input[type=checkbox]:hover{border-color:var(--accent-gold);background:#ffffff1a}label:has(input[type=checkbox]){color:var(--text-primary)!important;font-weight:500;cursor:pointer;-webkit-user-select:none;user-select:none;transition:color .2s ease}label:has(input[type=checkbox]):hover{color:var(--accent-gold)!important}.quest-wrapper{max-width:1100px;margin:0 auto;padding:0 1.5rem 5rem}.quest-hero-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;margin-bottom:2.5rem}.quest-glass-card{background-color:#ffffffb8!important;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid rgba(226,232,240,.8)!important;border-radius:24px;position:relative;overflow:hidden;box-shadow:0 10px 30px #94a3b80f,inset 0 1px 1px #fff9;transition:all .4s cubic-bezier(.16,1,.3,1)}.quest-glass-card:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:radial-gradient(circle at 10% 10%,rgba(255,255,255,.4),transparent 70%);pointer-events:none}.quest-glass-card.card-active{border-color:#4f46e559!important;background-color:#ffffffeb!important;box-shadow:0 15px 35px #4f46e50d,inset 0 1px 1px #fffc}.quest-glass-card.card-completed{border-color:#10b98140!important;background-color:#10b98105!important}.quest-glass-card.card-locked{opacity:.45;pointer-events:none;background-color:#ffffff59!important;border-color:#e2e8f066!important}.quest-badge-stamp{font-family:JetBrains Mono,monospace;font-size:.72rem;font-weight:700;letter-spacing:.08em;padding:.3rem .8rem;border-radius:9999px;background:#4f46e514;border:1px solid rgba(79,70,229,.2);color:#4f46e5;display:inline-flex;align-items:center;gap:.35rem}.quest-price-stamp{font-family:JetBrains Mono,monospace;font-size:.75rem;font-weight:700;background:#10b98114;border:1px solid rgba(16,185,129,.2);color:#10b981;padding:.2rem .65rem;border-radius:6px;display:inline-flex;align-items:center;gap:.35rem}.quest-bloom-btn-gold{background:linear-gradient(135deg,#4f46e5,#7c3aed);color:#fff!important;font-weight:800;border-radius:12px;transition:all .3s cubic-bezier(.16,1,.3,1);box-shadow:0 4px 15px #4f46e540;border:none}.quest-bloom-btn-gold:hover{transform:translateY(-2px);box-shadow:0 6px 20px #4f46e566}.quest-circle-progress{transform:rotate(-90deg);transform-origin:50% 50%;transition:stroke-dashoffset .8s ease-in-out}.quest-grid-roadmap{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}.quest-card-col-normal{grid-column:span 4}.quest-card-col-wide{grid-column:span 8}@media (max-width: 1024px){.quest-hero-grid-col-left,.quest-hero-grid-col-right,.quest-card-col-normal,.quest-card-col-wide{grid-column:span 12!important}}.gradient-text{background:linear-gradient(135deg,#4f46e5,#8b5cf6,#06b6d4);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;display:inline-block}