:root{--color-primary: #3390ec;--color-primary-dark: #2b7ac4;--color-primary-darkest: #2468a8;--color-gray-50: #f8fafc;--color-gray-100: #f1f5f9;--color-gray-200: #e2e8f0;--color-gray-300: #cbd5e1;--color-gray-400: #94a3b8;--color-gray-500: #64748b;--color-gray-600: #475569;--color-gray-800: #1e293b;--color-gray-900: #0f172a;--color-success: #22c55e;--color-success-bg: #f0fdf4;--color-warning: #f59e0b;--color-warning-bg: #fffbeb;--color-error: #ef4444;--color-error-bg: #fef2f2;--font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 16px;--spacing-lg: 24px;--spacing-xl: 40px;--spacing-2xl: 64px;--radius-sm: 6px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 20px;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .1);--shadow-md: 0 4px 16px rgba(0, 0, 0, .15);--shadow-lg: 0 25px 50px -12px rgba(0, 0, 0, .25);--shadow-btn: 0 2px 5px rgba(51, 144, 236, .3);--transition-fast: .15s;--transition-normal: .2s;--transition-slow: .3s}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:var(--font-family);font-size:14px;line-height:1.6;color:var(--color-gray-800);background-color:#fff;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{color:inherit;text-decoration:none;transition:color var(--transition-normal)}button{font-family:inherit;border:none;background:none;cursor:pointer}img,svg{display:block}.header{position:fixed;top:0;left:0;right:0;z-index:100;background:#fffffff2;backdrop-filter:blur(10px);border-bottom:1px solid var(--color-gray-200)}.nav{max-width:1200px;margin:0 auto;padding:0 var(--spacing-lg);height:64px;display:flex;align-items:center;justify-content:space-between}.logo{display:flex;align-items:center;gap:var(--spacing-sm);font-size:16px;font-weight:600;color:var(--color-gray-900)}.logo svg{border-radius:var(--radius-sm)}.nav-links{display:flex;gap:var(--spacing-lg)}.nav-links a{font-size:14px;font-weight:500;color:var(--color-gray-600);padding:var(--spacing-sm) var(--spacing-sm);border-radius:var(--radius-sm);transition:all var(--transition-normal)}.nav-links a:hover,.nav-links a.active{color:var(--color-primary)}.nav-actions{display:flex;align-items:center;gap:var(--spacing-md)}.btn-primary{display:inline-flex;align-items:center;justify-content:center;padding:8px 20px;font-size:14px;font-weight:600;color:#fff;background:var(--color-primary);border-radius:var(--radius-sm);box-shadow:var(--shadow-btn);transition:all var(--transition-normal)}.btn-primary:hover{background:var(--color-primary-dark);box-shadow:0 4px 12px #3390ec66}.lang-switcher{position:relative}.lang-btn{display:flex;align-items:center;gap:var(--spacing-xs);padding:6px 12px;font-size:13px;font-weight:500;color:var(--color-gray-600);border:1px solid var(--color-gray-300);border-radius:var(--radius-sm);transition:all var(--transition-normal)}.lang-btn:hover{border-color:var(--color-gray-400);color:var(--color-gray-800)}.lang-dropdown{position:absolute;top:calc(100% + var(--spacing-xs));right:0;min-width:120px;background:#fff;border:1px solid var(--color-gray-200);border-radius:var(--radius-md);box-shadow:var(--shadow-md);opacity:0;visibility:hidden;transform:translateY(-8px);transition:all var(--transition-normal);overflow:hidden}.lang-dropdown.show{opacity:1;visibility:visible;transform:translateY(0)}.lang-dropdown a,.lang-dropdown .lang-option{display:block;width:100%;padding:8px 12px;font-size:13px;color:var(--color-gray-600);transition:all var(--transition-fast);text-align:left;background:none;border:none;cursor:pointer}.lang-dropdown a:hover,.lang-dropdown .lang-option:hover{background:var(--color-gray-50);color:var(--color-gray-800)}.lang-dropdown a.current,.lang-dropdown .lang-option.current{color:var(--color-primary);font-weight:500}.mobile-menu-btn{display:none;flex-direction:column;justify-content:center;gap:5px;width:32px;height:32px;padding:4px;background:transparent;border-radius:var(--radius-sm);transition:background var(--transition-fast)}.mobile-menu-btn:hover{background:var(--color-gray-100)}.hamburger{display:block;width:20px;height:2px;background:var(--color-gray-800);border-radius:1px;transition:all var(--transition-normal)}.mobile-nav{position:absolute;top:100%;left:0;right:0;background:#fff;border-top:1px solid var(--color-gray-200);box-shadow:var(--shadow-md);max-height:0;overflow:hidden;transition:max-height var(--transition-normal) ease-out}.mobile-nav.open{max-height:300px}.mobile-nav-inner{display:flex;flex-direction:column;padding:var(--spacing-md) var(--spacing-lg);gap:var(--spacing-sm)}.mobile-nav a{padding:var(--spacing-md);border-radius:var(--radius-sm);font-size:14px;font-weight:500;color:var(--color-gray-600);transition:all var(--transition-fast)}.mobile-nav a:hover,.mobile-nav a.active{background:var(--color-gray-50);color:var(--color-primary)}.header.menu-open .mobile-menu-btn .hamburger:nth-child(1){transform:translateY(7px) rotate(45deg)}.header.menu-open .mobile-menu-btn .hamburger:nth-child(2){opacity:0}.header.menu-open .mobile-menu-btn .hamburger:nth-child(3){transform:translateY(-7px) rotate(-45deg)}.main{padding-top:64px}.footer{border-top:1px solid var(--color-gray-200);padding:var(--spacing-xl) 0;margin-top:var(--spacing-2xl)}.footer-content{max-width:1200px;margin:0 auto;padding:0 var(--spacing-lg);text-align:center}.footer-content p{font-size:13px;color:var(--color-gray-500)}@media(max-width:768px){.nav-links{display:none}.mobile-menu-btn{display:flex}.lang-btn span{display:none}.lang-btn svg{display:block}}