:root{--color-bg: #ffffff;--color-text: #1a1a1a;--color-text-muted: #64748b;--color-primary: #0066ff;--color-primary-hover: #0052cc;--color-secondary: #f1f5f9;--color-accent: #f0f9ff;--color-border: #e2e8f0;--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-display: "Space Grotesk", var(--font-sans);--space-xs: .5rem;--space-sm: 1rem;--space-md: 2rem;--space-lg: 4rem;--space-xl: 8rem;--transition-standard: .3s cubic-bezier(.4, 0, .2, 1);--radius-sm: 4px;--radius-md: 8px;--radius-lg: 16px;--color-bg-rgb: 255, 255, 255;--color-secondary-rgb: 241, 245, 249}@media (prefers-color-scheme: dark){:root:not([data-theme=light]){--color-bg: #0a0d16;--color-text: #f1f5f9;--color-text-muted: #94a3b8;--color-primary: #38bdf8;--color-primary-hover: #0ea5e9;--color-secondary: #121a29;--color-accent: #0f1729;--color-border: #243247;--color-bg-rgb: 10, 13, 22;--color-secondary-rgb: 18, 26, 41}}[data-theme=dark]{--color-bg: #0a0d16;--color-text: #f1f5f9;--color-text-muted: #94a3b8;--color-primary: #38bdf8;--color-primary-hover: #0ea5e9;--color-secondary: #121a29;--color-accent: #0f1729;--color-border: #243247;--color-bg-rgb: 10, 13, 22;--color-secondary-rgb: 18, 26, 41}*{box-sizing:border-box;margin:0;padding:0}html,body{scroll-behavior:smooth;height:100%}body{font-family:var(--font-sans);font-size:1rem;line-height:1.6;color:var(--color-text);background-color:var(--color-bg);transition:background-color var(--transition-standard),color var(--transition-standard);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden;display:flex;flex-direction:column;min-height:100vh}h1,h2,h3,h4,h5,h6{font-family:var(--font-display);font-weight:600;line-height:1.2;margin-bottom:var(--space-sm)}h1{font-size:clamp(2.5rem,5vw,4rem);letter-spacing:-.02em}h2{font-size:clamp(1.8rem,4vw,2.5rem);letter-spacing:-.01em}p{margin-bottom:var(--space-sm);font-size:1.125rem;max-width:65ch}a{color:var(--color-primary);text-decoration:none;transition:color var(--transition-standard)}a:hover{color:var(--color-primary-hover)}.container{width:92%;max-width:1200px;margin:0 auto;padding:var(--space-md) 0}main{flex:1 0 auto}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:var(--space-md)}.button,button,[role=button]{display:inline-flex;align-items:center;justify-content:center;padding:.75rem 1.5rem;background-color:var(--color-primary);color:#fff;border:none;border-radius:var(--radius-md);font-family:var(--font-sans);font-weight:500;font-size:1rem;text-decoration:none;cursor:pointer;transition:all var(--transition-standard);position:relative;overflow:hidden}.button:hover,button:hover,[role=button]:hover{background-color:var(--color-primary-hover);transform:translateY(-2px);box-shadow:0 4px 12px #0000001a}.button:active,button:active,[role=button]:active{transform:translateY(0);box-shadow:0 2px 6px #0000001a}.button.secondary,button.secondary,[role=button].secondary{background-color:var(--color-secondary);color:var(--color-text)}.button.outline,button.outline,[role=button].outline{background-color:transparent;border:1px solid var(--color-border);color:var(--color-text)}.button.outline:hover,button.outline:hover,[role=button].outline:hover{border-color:var(--color-primary);color:var(--color-primary)}.card{padding:var(--space-md);background-color:var(--color-accent);border-radius:var(--radius-md);border:1px solid var(--color-border);transition:transform var(--transition-standard),box-shadow var(--transition-standard)}.card:hover{transform:translateY(-4px);box-shadow:0 10px 30px -15px #0000001a}.theme-toggle{background:none;border:none;padding:0;color:var(--color-text);cursor:pointer;display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:50%;transition:background-color var(--transition-standard)}.theme-toggle:hover{background-color:var(--color-secondary)}nav{display:flex;justify-content:space-between;align-items:center;padding:var(--space-sm) 5%;position:sticky;top:0;z-index:100;background-color:rgba(var(--color-bg-rgb),.85);border-bottom:1px solid var(--color-border);transition:background-color var(--transition-standard),padding var(--transition-standard);backdrop-filter:blur(8px)}nav.scrolled{padding:.75rem 5%;box-shadow:0 4px 20px #00000040;background-color:rgba(var(--color-bg-rgb),.95)}nav ul{display:flex;list-style:none;gap:var(--space-sm);align-items:center}nav a{color:var(--color-text);font-weight:500;padding:.5rem;border-radius:var(--radius-sm);transition:all var(--transition-standard);position:relative}nav a:not([role=button]):after{content:"";position:absolute;bottom:0;left:.5rem;right:.5rem;height:2px;background-color:var(--color-primary);transform:scaleX(0);transition:transform var(--transition-standard);transform-origin:right}nav a:not([role=button]):hover:after{transform:scaleX(1);transform-origin:left}nav a:hover{color:var(--color-primary)}nav a[role=button]{padding:.5rem 1rem}footer{padding:var(--space-md) 0;margin-top:var(--space-md);border-top:1px solid var(--color-border);text-align:center;flex-shrink:0;background-color:rgba(var(--color-bg-rgb, 255, 255, 255),.8);backdrop-filter:blur(8px)}footer .social-links{display:flex;gap:var(--space-md);margin:var(--space-sm) 0;justify-content:center}footer .social-links a{text-decoration:none;padding:.75rem;border-radius:50%;transition:all var(--transition-standard);color:var(--color-text);display:flex;align-items:center;justify-content:center;position:relative;background-color:rgba(var(--color-secondary-rgb, 241, 245, 249),.7)}footer .social-links a span{position:absolute;bottom:-25px;left:50%;transform:translate(-50%);opacity:0;transition:opacity var(--transition-standard);font-size:.8rem;white-space:nowrap;font-weight:500}footer .social-links a:hover{background-color:var(--color-primary);color:#fff}footer .social-links a:hover span{opacity:1}footer .copyright{margin-top:var(--space-sm);font-size:.875rem;color:var(--color-text-muted);display:flex;align-items:center;justify-content:center;gap:.25rem}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}input[type=text],input[type=email],input[type=tel],input[type=url],input[type=number],textarea{width:100%;padding:.875rem;border:1.5px solid var(--color-border);border-radius:var(--radius-md);font-family:var(--font-sans);font-size:1rem;background-color:var(--color-bg);color:var(--color-text);transition:all var(--transition-standard);-webkit-appearance:none;appearance:none}input[type=text]:focus,input[type=email]:focus,input[type=tel]:focus,input[type=url]:focus,input[type=number]:focus,textarea:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px #0066ff1a}textarea{resize:vertical;min-height:100px}.checkbox-group,.radio-group{display:grid;grid-template-columns:1fr;gap:var(--space-sm)}@media (min-width: 640px){.checkbox-group,.radio-group{grid-template-columns:repeat(auto-fill,minmax(200px,1fr))}}button:disabled{opacity:.6;cursor:not-allowed}@media (max-width: 768px){.grid{grid-template-columns:1fr}nav{flex-direction:column;gap:var(--space-sm);align-items:flex-start}nav ul{width:100%;justify-content:flex-start;flex-wrap:wrap}footer .social-links{gap:var(--space-sm)}footer .social-links a span{display:none}}