:root{--bg-color: #f8fafc;--panel-bg: rgba(255, 255, 255, .9);--accent-color: #3b82f6;--accent-glow: rgba(59, 130, 246, .15);--text-primary: #0f172a;--text-secondary: #64748b;--border-color: rgba(0, 0, 0, .1);--card-bg: #ffffff;--font-family: "Inter", system-ui, -apple-system, sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-color);color:var(--text-primary);font-family:var(--font-family);line-height:1.7;overflow-x:hidden}#root{min-height:100vh}.header{background:var(--card-bg);border-bottom:1px solid var(--border-color);padding:1rem 2rem;position:sticky;top:0;z-index:100;display:flex;align-items:center;justify-content:space-between}.logo{display:flex;align-items:center;gap:.75rem;font-weight:800;font-size:1.25rem;color:var(--text-primary);text-decoration:none}.logo-icon{width:36px;height:36px;background:linear-gradient(135deg,#3b82f6,#8b5cf6);border-radius:10px;display:grid;place-items:center;color:#fff}.menu-toggle{display:none;background:none;border:none;cursor:pointer;color:var(--text-primary);padding:.5rem}.hero{text-align:center;padding:5rem 2rem 4rem;max-width:900px;margin:0 auto}.hero h1{font-size:3.5rem;font-weight:800;letter-spacing:-.03em;line-height:1.1;margin-bottom:1.5rem;background:linear-gradient(135deg,#0f172a,#3b82f6);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.hero p{font-size:1.25rem;color:var(--text-secondary);max-width:600px;margin:0 auto 2rem}.hero-cta{display:inline-flex;align-items:center;gap:.5rem;background:linear-gradient(135deg,#3b82f6,#8b5cf6);color:#fff;padding:1rem 2rem;border-radius:12px;font-weight:600;font-size:1.1rem;text-decoration:none;transition:transform .2s,box-shadow .2s;box-shadow:0 4px 15px #3b82f64d}.hero-cta:hover{transform:translateY(-2px);box-shadow:0 6px 20px #3b82f666}.cards-section{max-width:1200px;margin:0 auto;padding:2rem}.section-title{font-size:1.5rem;font-weight:700;color:var(--text-primary);margin-bottom:1.5rem}.cards-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.5rem}.card{background:var(--card-bg);border:1px solid var(--border-color);border-radius:16px;padding:1.5rem;cursor:pointer;transition:transform .2s,box-shadow .2s,border-color .2s}.card:hover{transform:translateY(-4px);box-shadow:0 10px 30px #00000014;border-color:var(--accent-color)}.card-icon{width:48px;height:48px;background:var(--accent-glow);border-radius:12px;display:grid;place-items:center;color:var(--accent-color);margin-bottom:1rem}.card h3{font-size:1.1rem;font-weight:700;margin-bottom:.25rem}.doc-layout{display:flex;min-height:calc(100vh - 70px)}.doc-sidebar{width:280px;background:var(--card-bg);border-right:1px solid var(--border-color);padding:1.5rem 1rem;position:sticky;top:70px;height:calc(100vh - 70px);overflow-y:auto;flex-shrink:0}.sidebar-section{margin-bottom:1.5rem}.sidebar-heading{font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--text-secondary);padding:.5rem .75rem}.sidebar-item{display:flex;align-items:center;gap:.5rem;padding:.6rem .75rem;border-radius:8px;color:var(--text-secondary);cursor:pointer;font-size:.9rem;transition:all .15s}.sidebar-item:hover{background:var(--accent-glow);color:var(--text-primary)}.sidebar-item.active{background:var(--accent-glow);color:var(--accent-color);font-weight:600}.doc-view{flex:1;max-width:800px;margin:0 auto;padding:2rem}.back-button{display:inline-flex;align-items:center;gap:.5rem;color:var(--accent-color);font-weight:600;cursor:pointer;margin-bottom:2rem;padding:.5rem 1rem;border-radius:8px;transition:background .2s}.back-button:hover{background:var(--accent-glow)}.markdown-container h1{font-size:2.5rem;font-weight:800;margin-bottom:1.5rem;color:var(--text-primary)}.markdown-container h2{font-size:1.75rem;font-weight:700;margin-top:2.5rem;margin-bottom:1rem;padding-bottom:.5rem;border-bottom:1px solid var(--border-color)}.markdown-container h3{font-size:1.25rem;font-weight:600;margin-top:2rem;margin-bottom:.75rem}.markdown-container p{margin-bottom:1rem}.markdown-container ul,.markdown-container ol{margin-bottom:1rem;padding-left:1.5rem}.markdown-container li{margin-bottom:.5rem}.markdown-container a{color:var(--accent-color);text-decoration:none}.markdown-container a:hover{text-decoration:underline}pre{background:#1e293b!important;color:#e2e8f0;padding:1.25rem;border-radius:12px;overflow-x:auto;margin:1.5rem 0;font-size:.9rem}.markdown-container img{max-width:100%;height:auto;border-radius:8px;margin:1.5rem 0;border:1px solid var(--border-color)}code{font-family:Fira Code,Consolas,monospace}.inline-code{background:var(--accent-glow);color:var(--accent-color);padding:.15rem .4rem;border-radius:4px;font-size:.9em}.doc-navigation{display:flex;justify-content:space-between;gap:1rem;margin-top:4rem;padding-top:2rem;border-top:1px solid var(--border-color)}.nav-button{display:flex;align-items:center;gap:.75rem;padding:1rem 1.25rem;background:var(--card-bg);border:1px solid var(--border-color);border-radius:12px;cursor:pointer;transition:all .2s;flex:1;max-width:280px}.nav-button:hover{border-color:var(--accent-color);background:var(--accent-glow)}.nav-button.next{margin-left:auto;text-align:right;flex-direction:row;justify-content:flex-end}.nav-label{display:block;font-size:.75rem;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em}.nav-title{display:block;font-weight:600;color:var(--accent-color)}.footer{text-align:center;padding:3rem 2rem;color:var(--text-secondary);font-size:.9rem;border-top:1px solid var(--border-color);margin-top:4rem}.footer a{color:var(--accent-color);text-decoration:none}@media(max-width:900px){.doc-sidebar{position:fixed;left:-300px;top:70px;height:calc(100vh - 70px);z-index:99;transition:left .3s ease;box-shadow:2px 0 10px #0000001a}.doc-sidebar.open{left:0}.menu-toggle{display:block}.logo-text{display:none}}@media(max-width:768px){.hero h1{font-size:2.5rem}.hero p{font-size:1.1rem}.cards-grid{grid-template-columns:1fr}.doc-navigation{flex-direction:column}.nav-button{max-width:none}.nav-button.next{margin-left:0}}.doc-toc-sidebar{width:240px;padding:1.5rem 1rem;position:sticky;top:70px;height:calc(100vh - 70px);overflow-y:auto;flex-shrink:0;border-left:1px solid var(--border-color);display:block}.toc-heading{font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--text-secondary);margin-bottom:1rem;padding-left:.5rem}.toc-list{display:flex;flex-direction:column;gap:.2rem}.toc-link{color:var(--text-secondary);text-decoration:none;padding:.4rem .5rem;border-radius:6px;transition:all .2s;font-size:.85rem;display:block;line-height:1.4}.toc-link:hover{color:var(--text-primary);background:var(--accent-glow)}.toc-link.level-1{font-weight:600;color:var(--text-primary)}.toc-link.level-2{padding-left:1.25rem}.toc-link.level-3{padding-left:2rem}.mobile-toc-toggle{display:none;align-items:center;justify-content:space-between;padding:.75rem 1rem;background:var(--card-bg);border:1px solid var(--border-color);border-radius:8px;margin-bottom:1rem;cursor:pointer;color:var(--text-secondary);font-weight:600;font-size:.9rem;transition:all .2s}.mobile-toc-toggle:hover{border-color:var(--accent-color);background:var(--accent-glow);color:var(--accent-color)}.mobile-toc{background:var(--bg-color);border:1px solid var(--border-color);border-radius:8px;padding:1rem;margin-bottom:2rem;animation:slideDown .2s ease-out}.mobile-toc .toc-link{border-bottom:1px solid transparent}.mobile-toc .toc-link:hover{background:var(--accent-glow)}@keyframes slideDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}@media(max-width:1200px){.doc-toc-sidebar{display:none}.mobile-toc-toggle{display:flex}.doc-view{padding-right:2rem}}