:root{--sans:system-ui, "Segoe UI", Roboto, sans-serif;--primary-color:#581c87;--secondary-color:#7e22ce;--mono:ui-monospace, Consolas, monospace;--text-dark:#333;font-family:var(--sans);color:var(--text-dark);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:#fff;font-size:18px;font-weight:400;line-height:1.6}body{margin:0}#root{min-height:100svh}.main-content{max-width:900px;margin:0 auto;padding:2rem}main section{margin-bottom:3rem}main h2{margin-bottom:1.5rem;font-size:2rem}.hooks-list{flex-direction:column;gap:1rem;display:flex}.hook-card{border-bottom:1px solid #e0e0e0;flex-direction:row;align-items:flex-start;gap:2rem;padding-top:1rem;padding-bottom:1rem;display:flex}.hook-card:last-child{border-bottom:none}.hook-card h3{flex:0 0 180px;margin:0;font-size:1.1rem;font-weight:500}.hook-card code{background-color:#f3e8ff;border-radius:4px;padding:.2em .4em;font-size:.95em}.hook-card p{color:var(--text-dark);flex:1;margin:0;line-height:1.6}@media (width<=768px){.hook-card{flex-direction:column;align-items:flex-start;gap:.5rem}.hook-card h3{flex-basis:auto;margin-bottom:.5rem}}.header-content{background:linear-gradient(45deg, var(--primary-color), var(--secondary-color));color:#fff;text-align:center;padding:4rem 2rem}.header-content h1{margin:0 0 1rem;font-size:3rem}.header-content p{opacity:.9;margin:0;font-size:1.25rem}.navbar{border-bottom:1px solid #e0e0e0;justify-content:center;gap:1rem;margin-bottom:4rem;padding-top:2rem;padding-bottom:2rem;display:flex}.nav-link{color:var(--primary-color);border-radius:6px;padding:.5rem 1rem;font-weight:500;text-decoration:none;transition:background-color .2s,color .2s}.nav-link.active,.nav-link:hover{background-color:var(--primary-color);color:#fff}.intro{color:#555;margin-bottom:3rem;font-size:1.1rem}.step{margin-bottom:2.5rem}.step h3{border-left:4px solid var(--primary-color);margin-bottom:1rem;padding-left:1rem;font-size:1.5rem}.step p{margin-bottom:1rem;line-height:1.7}.step pre{color:#c9d1d9;font-family:var(--mono,monospace);white-space:pre-wrap;background-color:#2d333b;border-radius:8px;padding:1.5rem;font-size:.9rem;overflow-x:auto}.important-note{border-left:5px solid var(--primary-color);background-color:#f3e8ff;border-radius:4px;margin-top:4rem;padding:1.5rem}.important-note h4{color:var(--primary-color);margin-top:0;font-size:1.2rem}.important-note p{margin-bottom:0}.quiz-card{background-color:#fff;border:1px solid #e0e0e0;border-radius:8px;max-width:750px;margin:0 auto;padding:2.5rem;box-shadow:0 10px 25px -5px #0000001a}.quiz-progress-bg{background-color:#f0f0f0;border-radius:4px;height:8px;margin-bottom:2rem;overflow:hidden}.quiz-progress-fill{background-color:var(--primary-color);height:100%;transition:width .3s}.quiz-header{justify-content:space-between;align-items:center;margin-bottom:1.5rem;display:flex}.quiz-meta{font-family:var(--mono,monospace);color:var(--primary-color);text-transform:uppercase;letter-spacing:.05em;font-size:.9rem;font-weight:600}.hint-button{color:#888;cursor:pointer;background:0 0;border:none;border-radius:50%;justify-content:center;align-items:center;padding:.5rem;transition:background-color .2s,color .2s;display:flex}.hint-button:hover{color:var(--primary-color);background-color:#f5f5f5}.quiz-question{color:var(--text-dark);margin-top:0;margin-bottom:2rem;font-size:1.5rem;line-height:1.4}.quiz-hint{border:1px solid var(--secondary-color);color:var(--primary-color);background-color:#f3e8ff;border-radius:6px;margin-bottom:1.5rem;padding:1rem;font-size:.95rem;font-style:italic}.quiz-options{flex-direction:column;gap:1rem;margin-bottom:2rem;display:flex}.quiz-option{text-align:left;cursor:pointer;width:100%;color:var(--text-dark);font-size:1rem;font-family:var(--sans);background-color:#fff;border:2px solid #e0e0e0;border-radius:8px;align-items:flex-start;gap:1rem;padding:1rem 1.25rem;line-height:1.5;transition:all .2s;display:flex}.quiz-option:not(:disabled):hover{border-color:var(--secondary-color);background-color:#fafafa}.quiz-option:disabled{cursor:default}.quiz-option.selected{border-color:var(--primary-color);background-color:#f3e8ff}.quiz-option.correct{background-color:#ecfdf5;border-color:#10b981}.quiz-option.incorrect{background-color:#fef2f2;border-color:#ef4444}.quiz-option.dimmed{opacity:.5}.option-icon{flex-shrink:0;margin-top:.1rem}.option-radio{border:2px solid #a3a3a3;border-radius:50%;width:20px;height:20px}.quiz-option.selected .option-radio{border-color:var(--primary-color);background-color:var(--primary-color)}.quiz-rationale{background-color:#f8f9fa;border-left:4px solid #ccc;border-radius:4px;margin-bottom:2rem;padding:1.25rem;font-size:.95rem}.quiz-rationale.correct-rationale{border-left-color:#10b981}.quiz-rationale.incorrect-rationale{border-left-color:#ef4444}.rationale-status{font-weight:700}.rationale-status.correct{color:#059669}.rationale-status.incorrect{color:#dc2626}.quiz-button{background-color:var(--primary-color);color:#fff;cursor:pointer;border:none;border-radius:8px;justify-content:center;align-items:center;gap:.5rem;width:100%;padding:1.25rem;font-size:1.1rem;font-weight:600;transition:background-color .2s;display:flex}.quiz-button:hover:not(:disabled){background-color:var(--secondary-color)}.quiz-button:disabled{cursor:not-allowed;background-color:#cbd5e1}.quiz-button.next-button{background-color:#334155}.quiz-button.next-button:hover{background-color:#475569}.quiz-results{text-align:center;padding:3rem 2rem}.quiz-results h2{color:var(--primary-color);margin-bottom:1rem;font-size:2.5rem}.quiz-score{color:var(--text-dark);margin-bottom:1rem;font-size:4rem;font-weight:700}.quiz-score span{color:#888;font-size:2rem}.quiz-results p{color:#555;margin-bottom:2.5rem;font-size:1.2rem}