:root{--primary:#2c3e50;--secondary:#34495e;--accent:#3498db;--accent-hover:#2980b9;--light:#ecf0f1;--neutral:#95a5a6;--white:#fff;--transition:.3s ease}[data-theme=dark]{--primary:#ecf0f1;--secondary:#bdc3c7;--accent:#3498db;--accent-hover:#5dade2;--light:#121212;--white:#1e1e1e;--neutral:#7f8c8d}*{box-sizing:border-box;margin:0;padding:0;font-family:Inter,Segoe UI,Roboto,-apple-system,BlinkMacSystemFont,Arial,sans-serif}body{background-color:var(--light);color:var(--primary);flex-direction:column;max-width:1000px;height:100vh;margin:0 auto;display:flex;overflow-x:hidden}header{background-color:var(--white);z-index:1000;width:100%;transition:box-shadow var(--transition), transform var(--transition);border-bottom:1px solid #0000000d;padding:0;position:fixed;top:0;left:0;right:0}.header-container{justify-content:space-between;align-items:center;max-width:1400px;margin:0 auto;padding:1rem 1.5rem;display:flex}.scrolled{box-shadow:0 4px 12px #00000014}.header-hidden{transform:translateY(-100%)}.logo{color:var(--primary);align-items:center;gap:10px;text-decoration:none;display:flex;position:relative}.logo-symbol{background-color:var(--accent);border-radius:8px;justify-content:center;align-items:center;width:32px;height:32px;display:flex;position:relative;overflow:hidden}.logo-symbol:before{content:"";background-color:var(--white);width:16px;height:16px;transition:transform var(--transition);border-radius:50%;position:absolute;transform:translate(-4px,-4px)}.logo:hover .logo-symbol:before{transform:translate(-2px,-2px)}.logo-text{letter-spacing:-.5px;font-size:1.25rem;font-weight:700}.logo-text span{color:var(--accent);font-weight:800}nav{align-items:center;display:flex}.desktop-nav{gap:2rem;padding:10px 40px;list-style:none;display:flex}@media (width<=768px){.desktop-nav{display:none}}.nav-link{color:var(--secondary);transition:color var(--transition);padding:.5rem 0;font-size:.95rem;font-weight:500;text-decoration:none;position:relative}.nav-link:hover{color:var(--accent)}.nav-link:after{content:"";background-color:var(--accent);width:0;height:2px;transition:width var(--transition);position:absolute;bottom:0;left:0}.nav-link:hover:after{width:100%}.nav-link.active{color:var(--accent)}.nav-link.active:after{width:100%}.nav-action{background-color:var(--accent);color:var(--white);cursor:pointer;transition:background-color var(--transition), transform var(--transition);border:none;border-radius:4px;margin-left:1.5rem;padding:.6rem 1.2rem;font-size:.9rem;font-weight:600}.nav-action:hover{background-color:var(--accent-hover);transform:translateY(-2px)}.mobile-menu-toggle{cursor:pointer;background:0 0;border:none;padding-left:20px;display:none}@media (width<=768px){.mobile-menu-toggle{justify-content:center;align-items:center;display:flex}.nav-action{margin-left:1rem;padding:.5rem 1rem;font-size:.85rem}.content-section{padding:2rem 0 3rem}.content-section p{font-size:1rem}.content-section h1{font-size:2rem}}.hamburger{cursor:pointer;width:24px;height:20px;transition:all .5s ease-in-out;position:relative;transform:rotate(0)}.hamburger span{background:var(--primary);opacity:1;border-radius:2px;width:100%;height:2px;transition:all .25s ease-in-out;display:block;position:absolute;left:0;transform:rotate(0)}.hamburger span:first-child{top:0}.hamburger span:nth-child(2),.hamburger span:nth-child(3){top:8px}.hamburger span:nth-child(4){top:16px}.mobile-menu-open .hamburger span:first-child{width:0%;top:8px;left:50%}.mobile-menu-open .hamburger span:nth-child(2){transform:rotate(45deg)}.mobile-menu-open .hamburger span:nth-child(3){transform:rotate(-45deg)}.mobile-menu-open .hamburger span:nth-child(4){width:0%;top:8px;left:50%}.mobile-menu{background-color:var(--white);opacity:0;transition:transform var(--transition), opacity var(--transition);flex-direction:column;gap:1rem;max-width:700px;margin:0 auto;padding:1rem;display:none;position:absolute;top:100%;left:0;right:0;transform:translateY(-10px);box-shadow:0 4px 12px #0000001a}.mobile-menu.show{opacity:1;display:flex;transform:translateY(0)}.mobile-nav-link{color:var(--secondary);transition:color var(--transition);border-bottom:1px solid #0000000d;padding:.75rem 0;font-size:1rem;font-weight:500;text-decoration:none}.mobile-nav-link:hover,.mobile-nav-link.active{color:var(--accent)}main{flex:1;margin-top:80px;padding:2rem 1.5rem}.content-section{max-width:900px;margin:0 auto;padding:3rem 0 5rem}.content-section h1{letter-spacing:-1.5px;margin-bottom:2rem;font-size:clamp(2.2rem,5vw,3.5rem);font-weight:400;line-height:1.15}.content-section p{color:var(--secondary);margin-bottom:2rem;font-size:1.05rem;line-height:1.85}.content-section p+p{border-top:1px solid #00000014;padding-top:1.5rem}.intro{border-left:3px solid var(--accent);margin-bottom:3rem;padding-left:1.5rem}h1{letter-spacing:-.5px;color:var(--primary);font-size:clamp(2rem,4vw,3rem);font-weight:500;line-height:1.2}h1 span{color:var(--accent);font-weight:600}p{color:var(--secondary);margin-bottom:1.5rem;line-height:1.6}.cta-group{border-top:1px solid #00000014;gap:1rem;margin-top:3rem;padding-top:2rem;display:flex}.cta-primary{background-color:var(--accent);color:var(--white);cursor:pointer;transition:background-color var(--transition), transform var(--transition);border:none;border-radius:6px;padding:.8rem 1.5rem;font-size:1rem;font-weight:500}.cta-primary:hover{background-color:var(--accent-hover);transform:translateY(-2px)}.cta-secondary{color:var(--accent);border:1px solid var(--accent);cursor:pointer;transition:background-color var(--transition), color var(--transition), transform var(--transition);background-color:#0000;border-radius:6px;padding:.8rem 1.5rem;font-size:1rem;font-weight:500}.cta-secondary:hover{background-color:var(--accent);color:var(--white);transform:translateY(-2px)}@media (width<=600px){.cta-group{flex-direction:column}}.theme-toggle{cursor:pointer;width:40px;height:40px;transition:all var(--transition);background:0 0;border:1px solid #0000001a;border-radius:50%;justify-content:center;align-items:center;margin-left:1rem;display:flex}.theme-toggle svg{stroke-width:2px;width:18px;height:18px}.moon-icon,[data-theme=dark] .sun-icon{display:none}[data-theme=dark] .moon-icon{display:block}[data-theme=dark] .cta-group,[data-theme=dark] .content-section p+p{border-color:#ffffff1a}.theme-toggle:hover{border-color:var(--accent);background-color:#3498db14}body{transition:background-color var(--transition), color var(--transition)}header,.mobile-menu,.nav-action,.cta-primary,.cta-secondary{transition:background-color var(--transition), color var(--transition), border-color var(--transition)}.language-toggle{align-items:center;gap:.4rem;margin-left:1rem;font-size:.85rem;font-weight:500;display:flex}.language-toggle a{color:var(--secondary);transition:color var(--transition);text-decoration:none}.language-toggle a:hover{color:var(--accent)}.language-toggle .active{color:var(--accent);font-weight:600}.language-toggle span{color:var(--neutral)}