:root{--color-primary: #2563eb;--color-primary-dark: #1d4ed8;--color-secondary: #64748b;--color-accent: #f59e0b;--color-dark: #0f172a;--color-dark-light: #1e3a5f;--color-light: #f8fafc;--color-gray: #e2e8f0;--color-text: #334155;--color-text-light: #64748b;--color-bg: #ffffff;--color-bg-alt: #f8fafc;--color-card: #ffffff;--gradient-section: linear-gradient(135deg, #f8fafc 0%, #ffffff 50%, #f0f4f8 100%);--font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--max-width: 1200px;--spacing-xs: .5rem;--spacing-sm: 1rem;--spacing-md: 2rem;--spacing-lg: 4rem;--spacing-xl: 6rem;--radius: 8px;--shadow: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1)}[data-theme=dark]{--color-dark: #f8fafc;--color-light: #1e293b;--color-gray: #334155;--color-text: #e2e8f0;--color-text-light: #94a3b8;--color-bg: #0f172a;--color-bg-alt: #1e293b;--color-card: #1e293b}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:var(--font-family);font-size:16px;line-height:1.6;color:var(--color-text);background:var(--color-bg);transition:background .3s ease,color .3s ease}.container{max-width:var(--max-width);margin:0 auto;padding:0 var(--spacing-md)}h1,h2,h3,h4{color:var(--color-dark);line-height:1.2}h1{font-size:clamp(2rem,5vw,3.5rem);font-weight:700}h2{font-size:clamp(1.5rem,4vw,2.5rem);font-weight:600}h3{font-size:1.25rem;font-weight:600}a{text-decoration:none;color:inherit;transition:color .2s ease}.btn{display:inline-flex;align-items:center;justify-content:center;padding:.75rem 1.5rem;border-radius:var(--radius);font-weight:500;font-size:1rem;cursor:pointer;transition:all .2s ease;border:none}.btn-primary{background:var(--color-primary);color:#fff}.btn-primary:hover{background:var(--color-primary-dark);transform:translateY(-2px);box-shadow:var(--shadow-lg)}.btn-secondary{background:#fff;color:var(--color-primary);border:2px solid var(--color-primary)}.btn-secondary:hover{background:var(--color-primary);color:#fff}.btn-large{padding:1rem 2rem;font-size:1.125rem}header{position:fixed;top:0;left:0;right:0;background:#fffffff2;backdrop-filter:blur(10px);z-index:1000;border-bottom:1px solid var(--color-gray);transition:background .3s ease}[data-theme=dark] header{background:#0f172af2}header nav{display:flex;align-items:center;justify-content:space-between;height:70px}.logo{display:flex;align-items:center;gap:.5rem;font-weight:700;font-size:1.5rem;color:var(--color-dark)}.logo-img{width:40px;height:40px;border-radius:8px;object-fit:cover}.logo-img-large{width:80px;height:80px;border-radius:12px;object-fit:cover;margin-bottom:var(--spacing-sm)}.nav-links{display:flex;align-items:center;gap:var(--spacing-md)}.nav-links a{color:var(--color-text);font-weight:500}.nav-links a:hover{color:var(--color-primary)}.nav-links a.btn-primary,.nav-links a.btn-primary:hover{color:#fff}.darkmode-toggle{background:var(--color-gray);border:none;width:40px;height:40px;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .3s ease}.darkmode-toggle:hover{background:var(--color-primary)}.darkmode-toggle .icon-moon,[data-theme=dark] .darkmode-toggle .icon-sun{display:none}[data-theme=dark] .darkmode-toggle .icon-moon{display:block}.lang-switcher{position:relative}.lang-toggle{background:var(--color-gray);border:none;height:40px;padding:0 12px;border-radius:20px;cursor:pointer;display:flex;align-items:center;gap:6px;transition:background .3s ease;font-family:var(--font-family);font-size:.875rem;font-weight:500;color:var(--color-text)}.lang-toggle:hover{background:var(--color-primary);color:#fff}.lang-icon{font-size:1.1rem}.lang-dropdown{position:absolute;top:100%;right:0;margin-top:8px;background:var(--color-card);border-radius:var(--radius);box-shadow:var(--shadow-lg);overflow:hidden;opacity:0;visibility:hidden;transform:translateY(-10px);transition:all .2s ease;z-index:1001;min-width:140px}.lang-dropdown.show{opacity:1;visibility:visible;transform:translateY(0)}.lang-option{display:block;padding:10px 16px;color:var(--color-text);font-size:.9rem;transition:background .2s ease}.lang-option:hover{background:var(--color-bg-alt)}.lang-option.active{background:var(--color-primary);color:#fff}footer{background:#0f172a;color:#fff;padding:var(--spacing-lg) 0 var(--spacing-md)}.footer-content{display:grid;grid-template-columns:2fr 1fr 1fr;gap:var(--spacing-lg);margin-bottom:var(--spacing-lg);align-items:start}.footer-brand{display:flex;flex-direction:column}.footer-brand .logo-text{font-size:1.5rem;font-weight:700;margin-bottom:var(--spacing-xs)}.footer-brand p{color:var(--color-text-light)}.footer-col{display:flex;flex-direction:column;gap:var(--spacing-sm)}.footer-col h4{color:#fff;margin-bottom:var(--spacing-xs)}.footer-col a{color:var(--color-text-light)}.footer-col a:hover{color:#fff}.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:var(--spacing-md);text-align:center;color:var(--color-text-light)}section{padding:var(--spacing-xl) 0}.section-header{text-align:center;max-width:700px;margin:0 auto var(--spacing-lg)}.section-header p{color:var(--color-text-light);margin-top:var(--spacing-sm);font-size:1.125rem}.nav-mobile{display:none;align-items:center;gap:var(--spacing-sm)}@media(max-width:768px){.nav-links{display:none}.nav-mobile{display:flex}.footer-content{grid-template-columns:1fr;gap:var(--spacing-md)}section{padding:var(--spacing-lg) 0}}