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.rl-glow-orb:nth-child(2){width:450px;height:450px;background:rgb(139 92 246 / .3);bottom:-150px;left:-100px;animation-delay:-7s}.rl-hero-violet .rl-gradient-text{background:var(--text-grad-violet);-webkit-background-clip:text;-webkit-text-fill-color:#fff0;background-clip:text}.rl-hero-violet .rl-btn-primary{background:var(--gradient-violet);box-shadow:var(--shadow-glow-violet)}.rl-hero-cyan{background:var(--gradient-hero-cyan)}.rl-hero-cyan::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 80% 50% at 20% 30%,rgb(6 182 212 / .3),transparent 50%),radial-gradient(ellipse 60% 60% at 80% 70%,rgb(34 211 238 / .25),transparent 50%);animation:rl-mesh 22s ease-in-out infinite}.rl-hero-cyan .rl-glow-orb:nth-child(1){width:550px;height:550px;background:rgb(6 182 212 / .35);top:-180px;right:-120px}.rl-hero-cyan .rl-glow-orb:nth-child(2){width:400px;height:400px;background:rgb(34 211 238 / .3);bottom:-120px;left:-80px;animation-delay:-6s}.rl-hero-cyan .rl-gradient-text{background:var(--text-grad-cyan);-webkit-background-clip:text;-webkit-text-fill-color:#fff0;background-clip:text}.rl-hero-cyan .rl-btn-primary{background:var(--gradient-cyan);box-shadow:var(--shadow-glow-cyan)}.rl-hero-emerald{background:var(--gradient-hero-emerald)}.rl-hero-emerald::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 50% at 25% 35%,rgb(16 185 129 / .3),transparent 50%),radial-gradient(ellipse 60% 50% at 75% 65%,rgb(52 211 153 / .25),transparent 50%);animation:rl-mesh 20s ease-in-out infinite}.rl-hero-emerald .rl-glow-orb:nth-child(1){width:500px;height:500px;background:rgb(16 185 129 / .35);top:-150px;right:-100px}.rl-hero-emerald .rl-glow-orb:nth-child(2){width:420px;height:420px;background:rgb(52 211 153 / .3);bottom:-130px;left:-100px;animation-delay:-5s}.rl-hero-emerald .rl-gradient-text{background:var(--text-grad-emerald);-webkit-background-clip:text;-webkit-text-fill-color:#fff0;background-clip:text}.rl-hero-emerald .rl-btn-primary{background:var(--gradient-emerald);box-shadow:var(--shadow-glow-emerald)}.rl-hero-gold{background:var(--gradient-hero-gold)}.rl-hero-gold::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 50% at 30% 30%,rgb(37 99 235 / .3),transparent 50%),radial-gradient(ellipse 50% 40% at 70% 70%,rgb(234 179 8 / .2),transparent 50%);animation:rl-mesh 18s ease-in-out infinite}.rl-hero-gold .rl-glow-orb:nth-child(1){width:500px;height:500px;background:rgb(37 99 235 / .35);top:-150px;left:-100px}.rl-hero-gold .rl-glow-orb:nth-child(2){width:400px;height:400px;background:rgb(234 179 8 / .25);bottom:-100px;right:-80px;animation-delay:-5s}.rl-hero-gold .rl-gradient-text{background:var(--text-grad-gold);-webkit-background-clip:text;-webkit-text-fill-color:#fff0;background-clip:text}.rl-hero-gold .rl-btn-primary{background:var(--gradient-gold);color:#1e3a5f;box-shadow:var(--shadow-glow-gold)}.rl-hero-aurora{background:var(--gradient-hero-aurora)}.rl-hero-aurora::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 100% 40% at 50% 0%,rgb(34 211 238 / .2),transparent 50%),radial-gradient(ellipse 80% 30% at 30% 10%,rgb(139 92 246 / .2),transparent 40%),radial-gradient(ellipse 80% 30% at 70% 10%,rgb(52 211 153 / .15),transparent 40%);animation:rl-mesh 25s ease-in-out infinite}.rl-hero-aurora .rl-aurora{position:absolute;top:0;left:0;right:0;height:400px;background:linear-gradient(180deg,rgb(34 211 238 / .1),rgb(139 92 246 / .08) 25%,rgb(52 211 153 / .06) 50%,transparent);filter:blur(40px);animation:rl-pulse 10s ease-in-out infinite}.rl-hero-aurora .rl-glow-orb:nth-child(1){width:600px;height:300px;background:linear-gradient(90deg,rgb(34 211 238 / .2),rgb(139 92 246 / .2) 50%,rgb(52 211 153 / .2));top:-100px;left:50%;transform:translateX(-50%);filter:blur(100px)}.rl-hero-aurora .rl-gradient-text{background:var(--gradient-aurora);-webkit-background-clip:text;-webkit-text-fill-color:#fff0;background-clip:text}.rl-hero-aurora .rl-btn-primary{background:linear-gradient(135deg,#2563eb,#7c3aed 50%,#06b6d4);box-shadow:0 0 40px rgb(124 58 237 / .3)}.rl-hero-ocean{background:var(--gradient-hero-ocean)}.rl-hero-ocean::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 80% 40% at 50% 100%,rgb(0 119 182 / .3),transparent 50%),radial-gradient(ellipse 60% 30% at 20% 80%,rgb(0 180 216 / .2),transparent 40%);animation:rl-mesh 30s ease-in-out infinite}.rl-hero-ocean .rl-wave{position:absolute;bottom:100px;left:0;right:0;height:200px;background:linear-gradient(180deg,transparent,rgb(0 119 182 / .1) 50%,rgb(0 180 216 / .15));filter:blur(60px);animation:rl-pulse 8s ease-in-out infinite}.rl-hero-ocean .rl-glow-orb:nth-child(1){width:500px;height:500px;background:rgb(0 119 182 / .25);bottom:-200px;left:50%;transform:translateX(-50%)}.rl-hero-ocean .rl-gradient-text{background:var(--text-grad-ocean);-webkit-background-clip:text;-webkit-text-fill-color:#fff0;background-clip:text}.rl-hero-ocean .rl-btn-primary{background:var(--gradient-ocean);box-shadow:var(--shadow-glow-ocean)}.rl-hero-indigo{background:var(--gradient-hero-indigo)}.rl-hero-indigo::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 60% 50% at 70% 20%,rgb(79 70 229 / .35),transparent 50%),radial-gradient(ellipse 50% 40% at 30% 80%,rgb(99 102 241 / .25),transparent 50%);animation:rl-mesh 22s ease-in-out infinite}.rl-hero-indigo .rl-glow-orb:nth-child(1){width:550px;height:550px;background:rgb(79 70 229 / .35);top:-180px;right:-100px}.rl-hero-indigo .rl-glow-orb:nth-child(2){width:400px;height:400px;background:rgb(129 140 248 / .25);bottom:-150px;left:-80px;animation-delay:-6s}.rl-hero-indigo .rl-gradient-text{background:var(--text-grad-indigo);-webkit-background-clip:text;-webkit-text-fill-color:#fff0;background-clip:text}.rl-hero-indigo .rl-btn-primary{background:var(--gradient-indigo);box-shadow:var(--shadow-glow-indigo)}.rl-hero-sapphire{background:var(--gradient-hero-sapphire)}.rl-hero-sapphire::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 60% at 80% 80%,rgb(37 99 235 / .4),transparent 50%),radial-gradient(ellipse 50% 40% at 20% 30%,rgb(59 130 246 / .3),transparent 50%);animation:rl-mesh 20s ease-in-out infinite}.rl-hero-sapphire .rl-glow-orb:nth-child(1){width:600px;height:600px;background:rgb(37 99 235 / .35);bottom:-200px;right:-150px}.rl-hero-sapphire .rl-glow-orb:nth-child(2){width:400px;height:400px;background:rgb(96 165 250 / .3);top:-100px;left:-100px;animation-delay:-7s}.rl-hero-sapphire .rl-gradient-text{background:var(--text-grad-sapphire);-webkit-background-clip:text;-webkit-text-fill-color:#fff0;background-clip:text}.rl-hero-sapphire .rl-btn-primary{background:var(--gradient-blue);box-shadow:var(--shadow-glow-blue)}.rl-hero-cosmic{background:var(--gradient-hero-cosmic)}.rl-hero-cosmic::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 60% 40% at 70% 30%,rgb(99 102 241 / .25),transparent 50%),radial-gradient(ellipse 50% 40% at 30% 70%,rgb(236 72 153 / .2),transparent 50%),radial-gradient(ellipse 40% 30% at 60% 80%,rgb(249 115 22 / .15),transparent 50%);animation:rl-mesh 25s ease-in-out infinite}.rl-hero-cosmic .rl-stars{position:absolute;inset:0;background-image:radial-gradient(1px 1px at 20% 30%,rgb(255 255 255 / .8),transparent),radial-gradient(1px 1px at 40% 70%,rgb(255 255 255 / .6),transparent),radial-gradient(1px 1px at 60% 20%,rgb(255 255 255 / .7),transparent),radial-gradient(1px 1px at 80% 50%,rgb(255 255 255 / .5),transparent),radial-gradient(1.5px 1.5px at 10% 60%,rgb(255 255 255 / .9),transparent),radial-gradient(1.5px 1.5px at 90% 40%,rgb(255 255 255 / .7),transparent),radial-gradient(1px 1px at 35% 85%,rgb(255 255 255 / .6),transparent),radial-gradient(1px 1px at 75% 15%,rgb(255 255 255 / .8),transparent)}.rl-hero-cosmic .rl-glow-orb:nth-child(1){width:400px;height:400px;background:rgb(99 102 241 / .3);top:-100px;right:-50px}.rl-hero-cosmic .rl-glow-orb:nth-child(2){width:350px;height:350px;background:rgb(236 72 153 / .25);bottom:-100px;left:-50px;animation-delay:-5s}.rl-hero-cosmic .rl-glow-orb:nth-child(3){width:300px;height:300px;background:rgb(249 115 22 / .2);top:50%;left:50%;transform:translate(-50%,-50%);animation-delay:-10s}.rl-hero-cosmic .rl-gradient-text{background:var(--gradient-cosmic);-webkit-background-clip:text;-webkit-text-fill-color:#fff0;background-clip:text}.rl-hero-cosmic .rl-btn-primary{background:linear-gradient(135deg,#6366f1,#ec4899 50%,#f97316);box-shadow:0 0 40px rgb(236 72 153 / .3)}.rl-hero .rl-btn-primary{display:inline-flex;align-items:center;gap:8px;padding:16px 24px;font-family:var(--font-body);font-size:1rem;font-weight:600;color:#fff;border-radius:12px;border:none;cursor:pointer;transition:all 0.25s;text-decoration:none}.rl-hero .rl-btn-primary:hover{transform:translateY(-2px)}.rl-hero .rl-btn-secondary{display:inline-flex;align-items:center;gap:8px;padding:16px 24px;font-family:var(--font-body);font-size:1rem;font-weight:600;background:rgb(255 255 255 / .1);color:#fff;border:1px solid rgb(255 255 255 / .2);border-radius:12px;cursor:pointer;transition:all 0.25s;text-decoration:none;backdrop-filter:blur(10px)}.rl-hero .rl-btn-secondary:hover{background:rgb(255 255 255 / .15);transform:translateY(-2px)}@media (max-width:768px){.rl-hero{padding-top:80px}.rl-hero-content{padding:48px 16px}.rl-hero-stats{gap:24px}.rl-hero-stat-value{font-size:2rem}.rl-glow-orb{transform:scale(.7)}}.rl-badge{display:inline-flex;align-items:center;gap:4px;padding:4px 10px;font-family:var(--font-body);font-size:12px;font-weight:600;line-height:1.4;border-radius:var(--radius-full);white-space:nowrap}.rl-badge-beginner{background:var(--emerald-100);color:var(--emerald-600)}.rl-badge-intermediate{background:var(--gold-100);color:var(--gold-600)}.rl-badge-advanced{background:var(--rose-100);color:var(--rose-600)}.rl-badge-beginner-solid{background:var(--gradient-emerald);color:#fff}.rl-badge-intermediate-solid{background:var(--gradient-gold);color:#1e3a5f}.rl-badge-advanced-solid{background:var(--gradient-rose);color:#fff}.rl-badge-subject{background:var(--slate-100);color:var(--slate-600)}.rl-badge-new{background:var(--blue-100);color:var(--blue-600)}.rl-badge-featured{background:var(--violet-100);color:var(--violet-600)}.rl-badge-premium{background:linear-gradient(135deg,var(--gold-100),var(--amber-100));color:var(--gold-700)}.rl-badge-trending{background:var(--orange-100);color:var(--orange-600)}.rl-badge-blue{background:var(--blue-100);color:var(--blue-600)}.rl-badge-violet{background:var(--violet-100);color:var(--violet-600)}.rl-badge-cyan{background:var(--cyan-100);color:var(--cyan-600)}.rl-badge-emerald{background:var(--emerald-100);color:var(--emerald-600)}.rl-badge-gold{background:var(--gold-100);color:var(--gold-600)}.rl-badge-amber{background:var(--amber-100);color:var(--amber-600)}.rl-badge-orange{background:var(--orange-100);color:var(--orange-600)}.rl-badge-rose{background:var(--rose-100);color:var(--rose-600)}.rl-badge-sm{padding:2px 8px;font-size:10px}.rl-badge-lg{padding:6px 14px;font-size:14px}.rl-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 20px;font-family:var(--font-body);font-size:1rem;font-weight:600;line-height:1.4;border-radius:var(--radius-lg);border:none;cursor:pointer;transition:var(--transition-all);text-decoration:none;white-space:nowrap}.rl-btn:disabled{opacity:.6;cursor:not-allowed}.rl-btn-primary{background:var(--gradient-blue);color:#fff;box-shadow:var(--shadow-glow-blue)}.rl-btn-primary:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 8px 25px rgb(37 99 235 / .4)}.rl-btn-violet{background:var(--gradient-violet);color:#fff;box-shadow:var(--shadow-glow-violet)}.rl-btn-cyan{background:var(--gradient-cyan);color:#fff;box-shadow:var(--shadow-glow-cyan)}.rl-btn-emerald{background:var(--gradient-emerald);color:#fff;box-shadow:var(--shadow-glow-emerald)}.rl-btn-gold{background:var(--gradient-gold);color:#1e3a5f;box-shadow:var(--shadow-glow-gold)}.rl-btn-amber{background:var(--gradient-amber);color:#1e3a5f;box-shadow:var(--shadow-glow-amber)}.rl-btn-orange{background:var(--gradient-orange);color:#fff;box-shadow:var(--shadow-glow-orange)}.rl-btn-rose{background:var(--gradient-rose);color:#fff;box-shadow:var(--shadow-glow-rose)}.rl-btn-secondary{background:rgb(255 255 255 / .1);color:var(--text-primary);border:1px solid var(--border-light);backdrop-filter:blur(10px)}.rl-btn-secondary:hover:not(:disabled){background:rgb(255 255 255 / .2);transform:translateY(-2px)}.rl-btn-outline{background:#fff;color:var(--blue-600);border:2px solid var(--blue-200)}.rl-btn-outline:hover:not(:disabled){border-color:var(--blue-400);background:var(--blue-50)}.rl-btn-ghost{background:#fff0;color:var(--text-secondary);border:1px solid var(--border-light)}.rl-btn-ghost:hover:not(:disabled){background:var(--bg-light)}.rl-btn-text{background:#fff0;color:var(--blue-600);padding:8px 12px}.rl-btn-text:hover:not(:disabled){background:var(--blue-50)}.rl-btn-light{background:#fff;color:var(--text-primary)}.rl-btn-light:hover:not(:disabled){transform:translateY(-2px);box-shadow:var(--shadow-lg)}.rl-btn-dark{background:rgb(255 255 255 / .1);color:#fff;border:1px solid rgb(255 255 255 / .2);backdrop-filter:blur(10px)}.rl-btn-dark:hover:not(:disabled){background:rgb(255 255 255 / .15);transform:translateY(-2px)}.rl-btn-sm{padding:8px 16px;font-size:14px}.rl-btn-lg{padding:16px 28px;font-size:18px}.rl-btn-xl{padding:20px 32px;font-size:18px}.rl-btn-icon{width:40px;height:40px;padding:0;display:flex;align-items:center;justify-content:center;background:#fff0;border:none;color:var(--text-muted);cursor:pointer;border-radius:var(--radius-md);transition:var(--transition-fast)}.rl-btn-icon:hover{color:var(--blue-500);background:var(--blue-50)}.rl-btn-icon-sm{width:32px;height:32px}.rl-btn-icon-lg{width:48px;height:48px}.rl-btn-loading{position:relative;color:transparent!important;pointer-events:none}.rl-btn-loading::after{content:'';position:absolute;width:20px;height:20px;top:50%;left:50%;margin-left:-10px;margin-top:-10px;border:2px solid rgb(255 255 255 / .3);border-top-color:#fff;border-radius:50%;animation:rl-spin 0.8s linear infinite}@keyframes rl-spin{to{transform:rotate(360deg)}}.rl-input{width:100%;padding:12px 16px;font-family:var(--font-body);font-size:1rem;color:var(--text-primary);background:var(--bg-white);border:2px solid var(--border-light);border-radius:var(--radius-lg);transition:var(--transition-fast)}.rl-input:focus{outline:none;border-color:var(--blue-400);box-shadow:0 0 0 3px rgb(59 130 246 / .1)}.rl-input::placeholder{color:var(--text-light)}.rl-input:disabled{background:var(--bg-light);cursor:not-allowed}.rl-input-error{border-color:var(--rose-500)}.rl-input-error:focus{border-color:var(--rose-500);box-shadow:0 0 0 3px rgb(244 63 94 / .1)}.rl-input-sm{padding:8px 12px;font-size:14px}.rl-input-lg{padding:16px 20px;font-size:18px}.rl-label{display:block;font-size:.875rem;font-weight:500;color:var(--text-secondary);margin-bottom:8px}.rl-help-text{font-size:12px;color:var(--text-muted);margin-top:4px}.rl-error-text{font-size:12px;color:var(--rose-500);margin-top:4px}.rl-textarea{width:100%;padding:12px 16px;font-family:var(--font-body);font-size:1rem;color:var(--text-primary);background:var(--bg-white);border:2px solid var(--border-light);border-radius:var(--radius-lg);resize:vertical;min-height:120px;transition:var(--transition-fast)}.rl-textarea:focus{outline:none;border-color:var(--blue-400);box-shadow:0 0 0 3px rgb(59 130 246 / .1)}.rl-select{width:100%;padding:12px 40px 12px 16px;font-family:var(--font-body);font-size:1rem;color:var(--text-primary);background:var(--bg-white);border:2px solid var(--border-light);border-radius:var(--radius-lg);appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;background-size:20px;cursor:pointer;transition:var(--transition-fast)}.rl-select:focus{outline:none;border-color:var(--blue-400);box-shadow:0 0 0 3px rgb(59 130 246 / .1)}.rl-checkbox-group,.rl-radio-group{display:flex;flex-direction:column;gap:12px}.rl-checkbox,.rl-radio{display:flex;align-items:center;gap:12px;cursor:pointer}.rl-checkbox input,.rl-radio input{width:20px;height:20px;accent-color:var(--blue-500);cursor:pointer}.rl-table-wrap{overflow-x:auto;border:1px solid var(--border-light);border-radius:var(--radius-lg)}.rl-table{width:100%;border-collapse:collapse;font-size:.875rem}.rl-table th{background:var(--bg-light);font-weight:600;text-align:left;padding:12px 16px;border-bottom:1px solid var(--border-light)}.rl-table td{padding:12px 16px;border-bottom:1px solid var(--border-light)}.rl-table tr:last-child td{border-bottom:none}.rl-table tr:hover td{background:var(--bg-light)}.rl-table code{font-family:var(--font-mono);font-size:12px;background:var(--bg-light);padding:2px 6px;border-radius:4px}.rl-progress{width:100%;height:8px;background:var(--bg-light);border-radius:var(--radius-full);overflow:hidden}.rl-progress-fill{height:100%;background:var(--gradient-blue);border-radius:var(--radius-full);transition:width 0.3s ease}.rl-progress-emerald .rl-progress-fill{background:var(--gradient-emerald)}.rl-progress-gold .rl-progress-fill{background:var(--gradient-gold)}.rl-progress-rose .rl-progress-fill{background:var(--gradient-rose)}.rl-progress-sm{height:4px}.rl-progress-lg{height:12px}.rl-code-block{background:var(--slate-900);border-radius:var(--radius-lg);padding:16px;overflow-x:auto}.rl-code-block code{font-family:var(--font-mono);font-size:.875rem;color:var(--slate-300);line-height:1.6;white-space:pre-wrap}.rl-code-inline{font-family:var(--font-mono);font-size:.875em;background:var(--bg-light);color:var(--rose-600);padding:2px 6px;border-radius:4px}.rl-grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}.rl-grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.rl-grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}.rl-grid-auto{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px}@media (max-width:768px){.rl-grid-2,.rl-grid-3,.rl-grid-4{grid-template-columns:1fr}}.rl-section{padding:80px 24px}.rl-section-white{background:var(--bg-white)}.rl-section-light{background:var(--bg-light)}.rl-section-dark{background:var(--slate-900);color:#fff}.rl-section-inner{max-width:1200px;margin:0 auto}.rl-section-header{text-align:center;margin-bottom:48px}.rl-section-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;background:var(--blue-100);color:var(--blue-600);border-radius:var(--radius-full);font-size:13px;font-weight:600;margin-bottom:16px}.rl-section-title{font-family:var(--font-display);font-size:clamp(1.75rem, 4vw, 2.5rem);font-weight:800;color:var(--text-primary);margin-bottom:16px}.rl-section-subtitle{font-size:1.125rem;color:var(--text-secondary);max-width:600px;margin:0 auto}.rl-text-gradient{background:var(--gradient-blue);-webkit-background-clip:text;-webkit-text-fill-color:#fff0;background-clip:text}.rl-text-center{text-align:center}.rl-text-left{text-align:left}.rl-text-right{text-align:right}.rl-mt-4{margin-top:var(--space-4)}.rl-mt-8{margin-top:var(--space-8)}.rl-mb-4{margin-bottom:var(--space-4)}.rl-mb-8{margin-bottom:var(--space-8)}.rl-my-4{margin-top:var(--space-4);margin-bottom:var(--space-4)}.rl-my-8{margin-top:var(--space-8);margin-bottom:var(--space-8)}@media (max-width:640px){.rl-section{padding:48px 16px}}.rl-quiz{background:var(--bg-white);border:1px solid var(--border-light);border-radius:var(--radius-2xl);padding:32px;max-width:700px;margin:0 auto;box-shadow:var(--shadow-lg)}.rl-quiz-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px;padding-bottom:16px;border-bottom:1px solid var(--border-light)}.rl-quiz-progress-wrap{display:flex;align-items:center;gap:12px}.rl-quiz-progress{width:200px;height:8px;background:var(--bg-light);border-radius:var(--radius-full);overflow:hidden}.rl-quiz-progress-fill{height:100%;background:var(--gradient-blue);border-radius:var(--radius-full);transition:width 0.3s ease}.rl-quiz-progress-text{font-family:var(--font-mono);font-size:14px;color:var(--text-muted)}.rl-quiz-timer{display:flex;align-items:center;gap:8px;font-family:var(--font-mono);color:var(--text-secondary);padding:8px 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var(--border-light);border-radius:var(--radius-lg);cursor:pointer;transition:var(--transition-fast)}.rl-quiz-option:hover{border-color:var(--blue-300);background:var(--blue-50)}.rl-quiz-option.selected{border-color:var(--blue-500);background:var(--blue-100)}.rl-quiz-option.correct{border-color:var(--emerald-500);background:var(--emerald-100)}.rl-quiz-option.incorrect{border-color:var(--rose-500);background:var(--rose-100)}.rl-quiz-option.disabled{pointer-events:none;opacity:.7}.rl-quiz-option-letter{width:40px;height:40px;background:#fff;border:2px solid var(--border-light);border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-family:var(--font-display);font-weight:700;color:var(--text-secondary);flex-shrink:0;transition:var(--transition-fast)}.rl-quiz-option:hover .rl-quiz-option-letter,.rl-quiz-option.selected .rl-quiz-option-letter{background:var(--blue-500);border-color:var(--blue-500);color:#fff}.rl-quiz-option.correct .rl-quiz-option-letter{background:var(--emerald-500);border-color:var(--emerald-500);color:#fff}.rl-quiz-option.incorrect .rl-quiz-option-letter{background:var(--rose-500);border-color:var(--rose-500);color:#fff}.rl-quiz-option-text{font-size:1rem;color:var(--text-primary);line-height:1.5}.rl-quiz-footer{display:flex;justify-content:space-between;align-items:center;margin-top:24px;padding-top:24px;border-top:1px solid var(--border-light)}.rl-quiz-explanation{background:var(--bg-light);border-radius:var(--radius-lg);padding:16px;margin-top:24px}.rl-quiz-explanation-title{font-weight:600;color:var(--text-primary);margin-bottom:8px}.rl-quiz-explanation-text{font-size:15px;color:var(--text-secondary);line-height:1.6}.rl-quiz-results{text-align:center;padding:48px 24px}.rl-quiz-results-icon{width:80px;height:80px;margin:0 auto 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ease}.aa-toc.is-visible{top:58px!important}.admin-bar .aa-toc.is-visible{top:90px!important}@media (max-width:782px){.admin-bar .aa-toc.is-visible{top:104px!important}}.aa-toc.is-scrolled{box-shadow:0 4px 12px rgb(0 0 0 / .1)}.aa-toc__inner{max-width:1000px;margin:0 auto;padding:0 24px;display:flex;align-items:center;gap:8px;overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none}.aa-toc__inner::-webkit-scrollbar{display:none}.aa-toc__brand{font-family:var(--font-display);font-weight:800;font-size:14px;color:var(--blue-500);white-space:nowrap;padding:14px 0;margin-right:8px;letter-spacing:-.3px;text-decoration:none}.aa-toc__brand:hover{color:var(--blue-600)}.aa-toc__link{font-size:13px;font-weight:500;color:var(--slate-500);white-space:nowrap;padding:14px 10px;border-bottom:2px solid #fff0;transition:all 0.2s ease;text-decoration:none}.aa-toc__link:hover{color:var(--blue-500)}.aa-toc__link.is-active{color:var(--blue-500);border-bottom-color:var(--blue-500)}.aa-toc__cta{margin-left:auto;flex-shrink:0}.aa-breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:14px;color:var(--slate-400);margin-bottom:20px}.aa-breadcrumb a{color:var(--slate-400);text-decoration:none;transition:color 0.2s ease}.aa-breadcrumb a:hover{color:#fff}.aa-breadcrumb__sep{width:14px;height:14px;opacity:.5}.aa-breadcrumb__current{color:var(--slate-300)}.aa-hero{position:relative;background:linear-gradient(135deg,#0f172a 0%,#1e293b 100%);overflow:hidden}.aa-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 60% 80% at 20% 100%,rgb(37 99 235 / .12) 0%,transparent 50%),radial-gradient(ellipse 50% 60% at 80% 20%,rgb(139 92 246 / .1) 0%,transparent 50%);pointer-events:none}.aa-hero__inner{position:relative;z-index:1;max-width:1000px;margin:0 auto;padding:48px 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rotate(-5deg)}.rl-mastery-vocab__term{font-family:var(--font-display);font-size:1.125rem;font-weight:700;color:#0f172a;padding-top:8px;margin:0}.rl-mastery-vocab__definition{font-size:15px;color:#475569;line-height:1.65;margin-bottom:16px}.rl-mastery-vocab__example{padding:16px;background:linear-gradient(135deg,var(--mastery-50),#fff);border-radius:8px;border-left:3px solid var(--mastery-400)}.rl-mastery-vocab__example-label{display:block;font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:1px;color:var(--mastery-500);margin-bottom:6px}.rl-mastery-vocab__example-text{font-size:14px;font-style:italic;color:#475569;margin:0}.rl-mastery-vocab__toggle{display:flex;align-items:center;justify-content:center;gap:10px;margin:40px auto 0;padding:14px 28px;background:#fff;border:2px solid var(--mastery-200);border-radius:50px;font-size:15px;font-weight:600;color:var(--mastery-600);cursor:pointer;transition:all 0.25s 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