*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Oxygen,Ubuntu,sans-serif;line-height:1.6;color:#2d3436}.container{max-width:1200px;margin:0 auto;padding:0 20px}.hero{position:relative;min-height:100vh;display:flex;align-items:center;justify-content:center;overflow:hidden;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%)}.hero-bg-layer{position:absolute;top:0;left:0;width:100%;height:100%;z-index:0;transition:opacity 1s ease-in-out;background-size:cover;background-position:center;background-repeat:no-repeat}.hero-bg-layer.active{opacity:1}.hero-content{position:relative;z-index:1;text-align:center;color:white;padding:2rem}.hero h1{font-size:clamp(2rem,5vw,3.5rem);margin-bottom:1rem;font-weight:700;text-shadow:2px 2px 4px rgba(0,0,0,0.3)}.hero p{font-size:clamp(1rem,2vw,1.25rem);margin-bottom:2rem;opacity:0.95}.cta-button{display:inline-block;padding:1rem 2rem;background:white;color:#667eea;text-decoration:none;border-radius:50px;font-weight:600;transition:transform 0.3s ease}header{position:fixed;top:0;width:100%;background:rgba(255,255,255,0.98);backdrop-filter:blur(10px);z-index:1000;box-shadow:0 2px 10px rgba(0,0,0,0.1)}nav{display:flex;justify-content:space-between;align-items:center;padding:1rem 0}.logo{font-size:1.5rem;font-weight:700;color:#667eea}.desktop-nav{display:flex;list-style:none;gap:2rem}.desktop-nav a{color:#2d3436;text-decoration:none;font-weight:500;transition:color 0.3s ease}.mobile-menu-toggle{display:none}.mobile-nav{display:none}.product-detail .main-image{position:relative;width:100%;max-width:600px;height:510px;border-radius:12px;overflow:hidden;background:#f8f9fa}.product-detail .main-image img{width:100%;height:100%;object-fit:cover}.placeholder-content{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;background:linear-gradient(135deg,#f5f7fa 0%,#c3cfe2 100%)}.placeholder-icon{font-size:4rem;margin-bottom:1rem}@media(max-width:768px){.hero{min-height:80vh}.desktop-nav{display:none}.mobile-menu-toggle{display:flex;flex-direction:column;background:none;border:none;cursor:pointer;padding:8px;gap:4px}.hamburger-line{width:24px;height:2px;background:#667eea;transition:all 0.3s ease}.mobile-nav{position:fixed;top:80px;left:0;width:100%;background:white;box-shadow:0 2px 10px rgba(0,0,0,0.1);transform:translateY(-100%);visibility:hidden;opacity:0;transition:all 0.3s ease;flex-direction:column;gap:0;z-index:999}.mobile-nav.active{transform:translateY(0);visibility:visible;opacity:1}.mobile-nav li{border-bottom:1px solid #f0f0f0}.mobile-nav a{display:block;padding:16px 20px;color:#2d3436;text-decoration:none}.product-detail .main-image{height:400px}}