@import "https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap";:root{--font-sans:"Inter", -apple-system, BlinkMacSystemFont, sans-serif;--font-mono:"JetBrains Mono", monospace;--bg-main:#fcfcfd;--bg-surface:#fff;--bg-header:#ffffffd9;--text-primary:#1e293b;--text-secondary:#64748b;--text-tertiary:#94a3b8;--border-subtle:#f1f5f9;--border-base:#e2e8f0;--accent-color:#2563eb;--accent-hover:#1d4ed8;--accent-light:#eff6ff;--spacing-xs:.25rem;--spacing-sm:.5rem;--spacing-md:1rem;--spacing-lg:1.5rem;--spacing-xl:3rem;--spacing-2xl:5rem;--radius-sm:6px;--radius-md:10px;--radius-lg:16px;--shadow-sm:0 1px 2px 0 #00000008;--shadow-md:0 4px 6px -1px #0000000d, 0 2px 4px -1px #00000008;--shadow-lg:0 10px 15px -3px #0000000d, 0 4px 6px -2px #00000008}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background-color:var(--bg-main);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;line-height:1.6}h1,h2,h3,h4{color:var(--text-primary);letter-spacing:-.02em;font-weight:600;line-height:1.2}h1{letter-spacing:-.03em;color:#0f172a;font-size:3.5rem;font-weight:700}h2{font-size:2.25rem}h3{font-size:1.25rem}p{color:var(--text-secondary);font-size:1.05rem}.app-container{flex-direction:column;min-height:100vh;display:flex}.container{max-width:1100px;padding:0 var(--spacing-lg);width:100%;margin:0 auto}.header{background-color:var(--bg-header);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border-base);z-index:100;transition:all .3s;position:sticky;top:0}.header-container{justify-content:space-between;align-items:center;height:64px;display:flex}.logo{color:var(--text-primary);align-items:center;gap:var(--spacing-sm);letter-spacing:-.01em;font-size:1.15rem;font-weight:700;text-decoration:none;display:flex}.nav-links{gap:var(--spacing-lg);display:flex}.nav-link{color:var(--text-secondary);font-size:.9rem;font-weight:500;text-decoration:none;transition:color .2s}.nav-link:hover,.nav-link.active{color:var(--text-primary)}.btn{justify-content:center;align-items:center;gap:var(--spacing-sm);border-radius:var(--radius-sm);cursor:pointer;border:1px solid #0000;padding:.6rem 1.2rem;font-size:.95rem;font-weight:500;text-decoration:none;transition:all .2s cubic-bezier(.16,1,.3,1);display:inline-flex}.btn-primary{background-color:var(--text-primary);color:#fff;box-shadow:var(--shadow-sm)}.btn-primary:hover{box-shadow:var(--shadow-md);background-color:#000;transform:translateY(-1px)}.btn-secondary{background-color:var(--bg-surface);color:var(--text-primary);border-color:var(--border-base);box-shadow:var(--shadow-sm)}.btn-secondary:hover{background-color:#f8fafc;border-color:#cbd5e1}.card{background-color:var(--bg-surface);border:1px solid var(--border-base);border-radius:var(--radius-lg);padding:var(--spacing-xl);z-index:1;transition:all .3s cubic-bezier(.16,1,.3,1);position:relative;overflow:hidden}.card:before{content:"";z-index:2;background:0 0;height:3px;transition:background .3s;position:absolute;top:0;left:0;right:0}.card:hover{box-shadow:var(--shadow-lg);border-color:#cbd5e1;transform:translateY(-3px)}.card:hover:before{background:var(--accent-color)}.card-icon-wrapper{border-radius:var(--radius-md);background-color:var(--accent-light);width:40px;height:40px;color:var(--accent-color);margin-bottom:var(--spacing-md);justify-content:center;align-items:center;display:inline-flex}.link-arrow{color:var(--text-primary);align-items:center;gap:var(--spacing-xs);font-size:.95rem;font-weight:500;text-decoration:none;transition:gap .2s,color .2s;display:inline-flex}.link-arrow:hover{color:var(--accent-color);gap:var(--spacing-sm)}.video-card:hover h3{color:var(--accent-color)}.video-card:hover img{opacity:.9}