:root{--bg: #0f0f13;--surface: #1a1a22;--surface-hover: #22222e;--border: rgba(255, 255, 255, .08);--text: #e8e8ed;--text-muted: rgba(255, 255, 255, .5);--accent: #6c63ff;--accent-glow: rgba(108, 99, 255, .15);--gold: #f5c542;--green: #34d399;font-family:Inter,ui-sans-serif,system-ui,-apple-system,sans-serif;line-height:1.6;color-scheme:dark}*{box-sizing:border-box}html,body,#root{margin:0;min-height:100vh;background:var(--bg);color:var(--text)}.header{position:sticky;top:0;z-index:10;display:flex;align-items:center;gap:1rem;padding:.85rem 1.5rem;background:#0f0f13d9;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}.header-title{display:flex;align-items:center;gap:.5rem;font-weight:600;font-size:1.05rem}.header-icon{font-size:1.3rem}.back-btn{background:none;border:1px solid var(--border);color:var(--text-muted);padding:.35rem .75rem;border-radius:.4rem;cursor:pointer;font-size:.85rem;transition:all .15s}.back-btn:hover{color:var(--text);border-color:#fff3}.home{max-width:72rem;margin:0 auto;padding:2.5rem 1.5rem 4rem}.hero{text-align:center;margin-bottom:2.5rem}.hero h1{font-size:clamp(1.8rem,5vw,2.8rem);font-weight:700;letter-spacing:-.03em;line-height:1.2;margin:0 0 .75rem}.highlight{background:linear-gradient(135deg,var(--accent),#a78bfa);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.hero-sub{color:var(--text-muted);font-size:1.05rem;max-width:34rem;margin:0 auto}.progress-bar-container{margin-bottom:2rem}.progress-label{display:flex;justify-content:space-between;font-size:.8rem;color:var(--text-muted);margin-bottom:.4rem}.progress-bar{height:6px;background:var(--surface);border-radius:3px;overflow:hidden}.progress-fill{height:100%;background:linear-gradient(90deg,var(--accent),#a78bfa);border-radius:3px;transition:width .4s ease}.chapters-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(20rem,1fr));gap:1rem}.chapter-card{background:var(--surface);border:1px solid var(--border);border-radius:.75rem;padding:1.5rem;text-align:left;cursor:pointer;transition:all .2s;color:var(--text);font-family:inherit;font-size:inherit}.chapter-card:hover{background:var(--surface-hover);border-color:#ffffff24;transform:translateY(-2px);box-shadow:0 8px 24px #0000004d}.chapter-card.done{border-color:#34d3994d}.chapter-card-header{display:flex;align-items:center;gap:.5rem;margin-bottom:.75rem}.chapter-icon{font-size:1.5rem}.chapter-number{font-size:.75rem;color:var(--text-muted);font-weight:500;text-transform:uppercase;letter-spacing:.05em}.check{margin-left:auto;color:var(--green);font-weight:700;font-size:1rem}.chapter-card h2{margin:0 0 .5rem;font-size:1.15rem;font-weight:600}.chapter-card p{margin:0;color:var(--text-muted);font-size:.9rem;line-height:1.55}.chapter-reader{display:grid;grid-template-columns:1fr 20rem;gap:2rem;max-width:72rem;margin:0 auto;padding:2rem 1.5rem 4rem}@media(max-width:768px){.chapter-reader{grid-template-columns:1fr}}.chapter-content{background:var(--surface);border:1px solid var(--border);border-radius:.75rem;padding:2rem}.chapter-text{font-size:1.05rem;line-height:1.85;color:#ffffffd9;white-space:pre-line;margin:0}.chapter-sidebar{display:flex;flex-direction:column;gap:1.25rem}.sidebar-card{background:var(--surface);border:1px solid var(--border);border-radius:.75rem;padding:1.25rem}.sidebar-card h3{margin:0 0 .75rem;font-size:.85rem;text-transform:uppercase;letter-spacing:.08em;color:var(--accent);font-weight:600}.lessons-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:.65rem}.lessons-list li{font-size:.9rem;color:#ffffffbf;padding-left:1rem;position:relative;line-height:1.5}.lessons-list li:before{content:"→";position:absolute;left:0;color:var(--accent)}.quote-block{background:linear-gradient(135deg,var(--accent-glow),rgba(167,139,250,.08));border:1px solid rgba(108,99,255,.15);border-radius:.75rem;padding:1.25rem;margin:0}.quote-block p{margin:0 0 .5rem;font-style:italic;font-size:.95rem;color:#fffc;line-height:1.6}.quote-block cite{font-size:.8rem;color:var(--text-muted);font-style:normal}.complete-btn{padding:.7rem 1rem;border-radius:.5rem;border:1px solid var(--border);background:var(--surface);color:var(--text-muted);font-size:.9rem;cursor:pointer;transition:all .2s;font-family:inherit}.complete-btn:hover{border-color:var(--accent);color:var(--text)}.complete-btn.completed{background:#34d3991a;border-color:#34d3994d;color:var(--green)}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}