:root{--bg-color: #050505;--text-color: #f0f0f0;--text-muted: #a0a0a0;--primary-color: #00d2ff;--secondary-color: #3a7bd5;--accent-color: #7928ca;--gradient-main: linear-gradient(135deg, var(--primary-color), var(--accent-color));--glass-bg: rgba(255, 255, 255, .05);--glass-border: rgba(255, 255, 255, .1);--glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, .37);--backdrop-blur: 12px;--font-main: "Inter", system-ui, -apple-system, sans-serif;--font-heading: "Outfit", sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-main);background-color:var(--bg-color);color:var(--text-color);line-height:1.6;overflow-x:hidden;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none;transition:color .3s ease}ul{list-style:none}h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);font-weight:700;line-height:1.2;margin-bottom:1rem}.container{max-width:1200px;margin:0 auto;padding:0 2rem}.study-layout{display:grid;grid-template-columns:280px 1fr;gap:2rem;align-items:start}#study-sidebar{position:sticky;top:120px;max-height:calc(100vh - 140px);overflow-y:auto;padding:1.5rem!important}.menu-group{margin-bottom:2rem;padding:0 .5rem}.logo{display:flex;align-items:center;gap:.8rem;text-decoration:none;font-weight:700;font-size:1.2rem}.logo-img{height:40px;width:auto}.glass-panel{background:var(--glass-bg);backdrop-filter:blur(var(--backdrop-blur));-webkit-backdrop-filter:blur(var(--backdrop-blur));border:1px solid var(--glass-border);border-radius:16px;box-shadow:var(--glass-shadow)}.text-gradient{background:var(--gradient-main);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;display:inline-block}.btn{display:inline-block;padding:.8rem 2rem;border-radius:50px;font-weight:600;cursor:pointer;transition:all .3s ease;border:none;font-family:var(--font-main)}.btn-primary{background:var(--gradient-main);color:#fff;box-shadow:0 4px 15px #00d2ff4d}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 25px #00d2ff80}.btn-secondary{background:#ffffff1a;color:#fff;border:1px solid rgba(255,255,255,.2)}.btn-secondary:hover{background:#fff3}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.animate-fade-in{animation:fadeIn .8s ease-out forwards}.bg-glow{position:fixed;width:600px;height:600px;border-radius:50%;filter:blur(100px);z-index:-1;opacity:.4}.bg-glow-1{top:-100px;left:-100px;background:radial-gradient(circle,var(--primary-color),transparent 70%)}.bg-glow-2{bottom:-100px;right:-100px;background:radial-gradient(circle,var(--accent-color),transparent 70%)}.section-padding{padding:6rem 2rem}.p-large{padding:3rem;text-align:center}.text-center{text-align:center}.section-title{font-size:2.5rem;margin-bottom:3rem}.mt-large{margin-top:6rem}@media (max-width: 768px){.main-title{font-size:2.5rem}}.markdown-content{text-align:left;line-height:1.8}.markdown-content h1{font-size:2.8rem;margin-bottom:2rem;font-family:var(--font-heading);background:var(--gradient-main);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;display:inline-block;border-bottom:2px solid rgba(0,210,255,.2);padding-bottom:.5rem;margin-top:0}.markdown-content h2{font-size:1.8rem;margin-top:2.5rem;margin-bottom:1.5rem;font-family:var(--font-heading);color:var(--primary-color);border-bottom:1px solid rgba(255,255,255,.1);padding-bottom:.5rem}.markdown-content h3{font-size:1.4rem;margin-top:2rem;margin-bottom:1rem;font-family:var(--font-heading);color:var(--secondary-color)}.markdown-content p{margin-bottom:1.2rem;line-height:1.7;color:#d0d0d0}.markdown-content ul,.markdown-content ol{margin-bottom:1.5rem;padding-left:1.5rem}.markdown-content li{margin-bottom:.5rem;color:#d0d0d0}.menu-item{display:block;padding:.8rem 1rem;color:var(--text-muted);text-decoration:none;font-size:.95rem;transition:all .2s ease;border-left:2px solid transparent;border-radius:0 8px 8px 0}.menu-item:hover{color:#fff;background:#ffffff0d}.menu-item.active{color:var(--primary-color);font-weight:600;background:#00d2ff1a;border-left-color:var(--primary-color)}.markdown-content table{width:100%;border-collapse:collapse;margin:2rem 0;overflow-x:auto;display:block;font-size:.95rem}.markdown-content th,.markdown-content td{padding:.8rem 1rem;border:1px solid rgba(255,255,255,.1);text-align:left}.markdown-content th{background:#8b5cf61a;color:#fff;font-weight:600}.markdown-content blockquote{border-left:4px solid var(--primary-color);padding:1rem 1.5rem;margin:2rem 0;background:#8b5cf60d;border-radius:0 8px 8px 0;font-style:italic;color:#e0e0e0}.markdown-content pre{background:#0000004d;padding:1.5rem;border-radius:12px;overflow-x:auto;margin:2rem 0;border:1px solid rgba(255,255,255,.05)}.markdown-content code{font-family:Fira Code,monospace;font-size:.9em}.markdown-content hr{border:0;border-top:1px solid rgba(255,255,255,.1);margin:3rem 0}.markdown-content img{max-width:100%;border-radius:12px;margin:2rem 0;box-shadow:0 8px 32px #0000005e;display:block;margin-left:auto;margin-right:auto}