*{margin:0;padding:0;box-sizing:border-box}:root{--transition-duration: .3s}*,*:before,*:after{transition:background-color var(--transition-duration) ease,color var(--transition-duration) ease,border-color var(--transition-duration) ease,box-shadow var(--transition-duration) ease}::view-transition-old(root),::view-transition-new(root){animation-duration:.3s}:root{--color-primary: #0066FF;--color-primary-dark: #0052CC;--color-primary-light: #4D94FF;--color-secondary: #FF6B35;--color-success: #00C851;--color-warning: #FFB800;--color-text: #1A1A1A;--color-text-light: #6B7280;--color-text-lighter: #9CA3AF;--color-bg: #FFFFFF;--color-bg-alt: #F8F9FA;--color-bg-tertiary: #F3F4F6;--color-border: #E5E7EB;--color-card-bg: #FFFFFF;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .1);--shadow-md: 0 4px 6px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 25px rgba(0, 0, 0, .15)}[data-theme=dark]{--color-primary: #4D94FF;--color-primary-dark: #3D7AE0;--color-primary-light: #6BA3FF;--color-secondary: #FF8A5B;--color-success: #00E676;--color-warning: #FFC107;--color-text: #F3F4F6;--color-text-light: #D1D5DB;--color-text-lighter: #9CA3AF;--color-bg: #0F172A;--color-bg-alt: #1E293B;--color-bg-tertiary: #334155;--color-border: #334155;--color-card-bg: #1E293B;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .3);--shadow-md: 0 4px 6px rgba(0, 0, 0, .4);--shadow-lg: 0 10px 25px rgba(0, 0, 0, .5)}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:var(--color-text);background:var(--color-bg);line-height:1.6;transition:background-color .3s ease,color .3s ease}.skip-link{position:absolute;top:-100px;left:50%;transform:translate(-50%);background:var(--color-primary);color:#fff;padding:.75rem 1.5rem;border-radius:0 0 8px 8px;font-weight:600;z-index:9999;transition:top .3s ease;text-decoration:none}.skip-link:focus{top:0;outline:2px solid var(--color-secondary);outline-offset:2px}.collab-banner{display:block;background:linear-gradient(135deg,var(--color-primary) 0%,var(--color-primary-dark) 100%);border:2px solid var(--color-primary);padding:1rem;text-align:center;text-decoration:none;transition:all .3s ease}.collab-banner:hover{transform:translateY(-2px);box-shadow:0 4px 12px #0066ff4d}.collab-top{margin-bottom:0}.collab-bottom{margin-top:2rem}.collab-content{display:flex;align-items:center;justify-content:center;gap:.75rem;max-width:728px;margin:0 auto;padding:.5rem}.collab-icon{font-size:1.5rem}.collab-text{color:#fff;font-weight:600;font-size:1rem}.site-header{background:var(--color-card-bg);border-bottom:1px solid var(--color-border);position:sticky;top:0;z-index:100;backdrop-filter:blur(10px);transition:background-color .3s ease}.nav-container{max-width:1400px;margin:0 auto;padding:1rem 2rem;display:flex;justify-content:space-between;align-items:center;gap:2rem}.logo{display:flex;align-items:center;gap:.5rem;text-decoration:none;color:var(--color-text);font-weight:800;font-size:1.25rem;transition:transform .2s}.logo:hover{transform:scale(1.02)}.logo-icon{font-size:1.5rem}.nav-menu{display:flex;gap:2rem;list-style:none}.nav-menu a{text-decoration:none;color:var(--color-text-light);font-weight:600;transition:color .2s;position:relative}.nav-menu a:after{content:"";position:absolute;bottom:-4px;left:0;width:0;height:2px;background:var(--color-primary);transition:width .2s}.nav-menu a:hover:after,.nav-menu a.active:after{width:100%}.nav-menu a:hover,.nav-menu a.active{color:var(--color-primary)}.nav-actions{display:flex;align-items:center;gap:.75rem}.theme-toggle{background:var(--color-bg-alt);border:2px solid var(--color-border);border-radius:50px;padding:.5rem .75rem;cursor:pointer;font-size:1.25rem;display:flex;align-items:center;transition:all .3s}.theme-toggle:hover{background:var(--color-primary);border-color:var(--color-primary);transform:scale(1.1)}[data-theme=light] .moon-icon{display:inline}[data-theme=light] .sun-icon,[data-theme=dark] .moon-icon{display:none}[data-theme=dark] .sun-icon{display:inline}.mobile-menu-toggle{display:none;background:var(--color-bg-alt);border:2px solid var(--color-border);border-radius:8px;padding:.5rem .75rem;cursor:pointer;font-size:1.25rem;transition:all .3s}.mobile-menu-toggle:hover{background:var(--color-primary);border-color:var(--color-primary);color:#fff}.mobile-menu-toggle .close-icon,.mobile-menu-toggle[aria-expanded=true] .hamburger-icon{display:none}.mobile-menu-toggle[aria-expanded=true] .close-icon{display:inline}.mobile-menu{display:none;background:var(--color-card-bg);border-top:1px solid var(--color-border);padding:1rem 2rem}.mobile-menu.open{display:block}.mobile-nav-list{list-style:none;display:flex;flex-direction:column;gap:.5rem}.mobile-nav-list a{display:block;padding:.75rem 1rem;color:var(--color-text);text-decoration:none;font-weight:500;border-radius:8px;transition:all .2s}.mobile-nav-list a:hover{background:var(--color-bg-alt);color:var(--color-primary)}main{min-height:calc(100vh - 300px);max-width:1400px;margin:0 auto;padding:2rem}.site-footer{background:var(--color-bg-alt);color:var(--color-text);margin-top:4rem;border-top:1px solid var(--color-border)}.footer-container{max-width:1400px;margin:0 auto;padding:3rem 2rem;display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:2rem}.footer-section h3,.footer-section h4{color:var(--color-text);margin-bottom:1rem;font-weight:700}.footer-section p{color:var(--color-text-light);line-height:1.7}.footer-section ul{list-style:none}.footer-section ul li{margin-bottom:.5rem}.footer-section a{color:var(--color-text-light);text-decoration:none;transition:color .2s}.footer-section a:hover{color:var(--color-primary)}.footer-bottom{border-top:1px solid var(--color-border);padding:1.5rem 2rem;text-align:center;font-size:.9rem;color:var(--color-text-light)}@media (max-width: 1024px){main{max-width:100%}}@media (max-width: 768px){.nav-menu{display:none}.mobile-menu-toggle{display:flex}.logo-text{font-size:1rem}main{padding:1rem}.collab-text{font-size:.875rem}.collab-icon{font-size:1.25rem}}