:root{--color-background:#F8F8F8;--color-surface:#FFFFFF;--color-primary:#556B2F;--color-secondary:#E6E6FA;--color-accent:#FFC300;--color-text:#333333;--color-muted:#666666;--font-body:'Lato',sans-serif;--font-heading:'Merriweather',serif;--max-width:1200px}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:var(--font-body);color:var(--color-text);background-color:var(--color-background);line-height:1.7}h1,h2,h3,h4,h5{font-family:var(--font-heading);color:var(--color-primary);line-height:1.3;margin-bottom:.5rem}p{margin-bottom:1rem;color:var(--color-text);font-size:1rem}a{color:var(--color-primary);text-decoration:none;transition:color .2s ease}a:hover,a:focus{color:var(--color-accent);text-decoration:underline}header{background-color:var(--color-surface);border-bottom:1px solid #e0e0e0;position:sticky;top:0;z-index:100}.header-container{max-width:var(--max-width);margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:1rem}.logo{display:flex;align-items:center;font-size:1.5rem;font-weight:bold;color:var(--color-primary)}.logo img{width:40px;height:40px;margin-right:.5rem}nav ul{list-style:none;display:flex;gap:1.5rem}nav a{font-weight:500;padding:.5rem}#menu-toggle{display:none;flex-direction:column;cursor:pointer;gap:4px}#menu-toggle span{width:25px;height:3px;background-color:var(--color-primary);transition:all .3s ease}.hero{background:linear-gradient(135deg,rgba(85,107,47,.9),rgba(85,107,47,.7)),url('assets/images/hero-background.jpg');background-size:cover;background-position:center;color:white;text-align:center;padding:4rem 1rem;min-height:60vh;display:flex;align-items:center;justify-content:center}.hero-content{max-width:600px}.hero-content h1{font-size:clamp(2rem,5vw,3.5rem);margin-bottom:1rem;text-shadow:2px 2px 4px rgba(0,0,0,.3)}.hero-content p{font-size:1.2rem;margin-bottom:2rem;opacity:.95}.search-bar{margin-top:2rem}.search-bar input{width:100%;max-width:400px;padding:1rem;border:none;border-radius:50px;font-size:1rem;box-shadow:0 4px 8px rgba(0,0,0,.1);outline:none}main{max-width:var(--max-width);margin:0 auto;padding:2rem 1rem;display:grid;grid-template-columns:1fr 300px;gap:2rem}.content h2{font-size:2rem;margin-bottom:1.5rem;text-align:center}.oil-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:2rem;margin-bottom:3rem}.oil-card{background:var(--color-surface);border-radius:12px;box-shadow:0 4px 8px rgba(0,0,0,.1);overflow:hidden;transition:transform .2s ease,box-shadow .2s ease}.oil-card:hover{transform:translateY(-5px);box-shadow:0 8px 16px rgba(0,0,0,.15)}.oil-card img{width:100%;height:200px;object-fit:cover}.oil-card h3{padding:1rem 1rem .5rem;font-size:1.2rem}.oil-card h3 a{color:var(--color-primary)}.oil-card p{padding:0 1rem 1.5rem;color:var(--color-muted);line-height:1.6}aside{background:var(--color-surface);padding:2rem;border-radius:12px;height:fit-content;box-shadow:0 2px 4px rgba(0,0,0,.05)}aside h3{margin-bottom:1rem;color:var(--color-primary)}aside p{color:var(--color-muted)}.ad-placeholder{background:var(--color-secondary);padding:2rem;text-align:center;margin-bottom:2rem;border-radius:8px;border:2px dashed var(--color-primary);color:var(--color-muted)}footer{background-color:var(--color-primary);color:white;text-align:center;padding:2rem 1rem;margin-top:3rem}footer p{margin-bottom:.5rem}footer a{color:white}footer a:hover{color:var(--color-accent)}@media (max-width:768px){main{grid-template-columns:1fr;gap:1rem}aside{order:-1}nav{display:none;position:absolute;top:100%;left:0;right:0;background:var(--color-surface);border-top:1px solid #e0e0e0;padding:1rem}nav.open{display:block}nav ul{flex-direction:column;gap:.5rem}#menu-toggle{display:flex}.hero{padding:2rem 1rem;min-height:50vh}.oil-grid{grid-template-columns:1fr;gap:1rem}.oil-card{margin:0 auto;max-width:400px}}