:root {
    --red: #d32f2f;
    --steel: #37474f;
    --light-steel: #f8f9fa;
    --border: #eceff1;
    --text-main: #263238;
    --text-muted: #546e7a;
}

* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Inter', -apple-system, sans-serif; }
body { background-color: #fff; color: var(--text-main); line-height: 1.5; font-size: 15px; }

/* NAVIGATION */
nav { 
    background: #fff; border-bottom: 4px solid var(--red); 
    padding: 0.8rem 8%; display: flex; justify-content: space-between; align-items: center; 
    position: sticky; top: 0; z-index: 100; box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}
.logo-wrapper { display: flex; align-items: center; gap: 18px; text-decoration: none; }
.hexagon {
    width: 50px; height: 28px; background-color: var(--red); position: relative;
    display: flex; align-items: center; justify-content: center; margin: 14px 0;
    color: white; font-weight: 900; font-size: 17px;
}
.hexagon:before, .hexagon:after {
    content: ""; position: absolute; width: 0;
    border-left: 25px solid transparent; border-right: 25px solid transparent;
}
.hexagon:before { bottom: 100%; border-bottom: 14px solid var(--red); }
.hexagon:after { top: 100%; border-top: 14px solid var(--red); }
.logo-text { font-weight: 800; font-size: 1.3rem; color: var(--steel); text-transform: uppercase; letter-spacing: -0.5px; }
.logo-text span { color: var(--red); }

.nav-links { display: flex; gap: 2rem; }
.nav-links a { text-decoration: none; color: var(--steel); font-weight: 700; text-transform: uppercase; font-size: 0.85rem; transition: 0.2s; }
.nav-links a:hover { color: var(--red); }
.nav-contact { font-weight: 700; color: var(--red); font-size: 1.1rem; }

/* COMMON LAYOUT */
.container { padding: 4rem 8%; max-width: 1400px; margin: 0 auto; }
.hero { text-align: center; margin-bottom: 4rem; }
.hero h1 { font-size: 2.8rem; color: var(--steel); font-weight: 900; margin-bottom: 1rem; }

/* CATALOG GRID */
.catalog-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.5rem; }
.cat-card { border: 1px solid var(--border); border-radius: 8px; background: #fff; }
.cat-header { background: var(--light-steel); padding: 1rem 1.2rem; font-weight: 800; color: var(--steel); border-bottom: 1px solid var(--border); text-transform: uppercase; font-size: 0.85rem; }
.cat-list { padding: 1.2rem; list-style: none; }
.cat-list li { margin-bottom: 0.5rem; font-size: 0.95rem; padding-left: 1.5rem; position: relative; }
.cat-list li::before { content: "›"; position: absolute; left: 0; color: var(--red); font-weight: bold; font-size: 1.3rem; top: -2px; }

/* FOOTER */
footer { background: var(--steel); padding: 3rem 8% 2rem; color: #cfd8dc; margin-top: 4rem; }
.footer-flex { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 2.5rem; }
.btn-red { background: var(--red); color: #fff; padding: 0.9rem 1.8rem; text-decoration: none; border-radius: 4px; font-weight: 700; text-transform: uppercase; display: inline-block; transition: 0.2s; border: none; cursor: pointer; }
.btn-red:hover { background: #b71c1c; transform: translateY(-2px); }
.copy { margin-top: 3rem; text-align: center; font-size: 0.8rem; border-top: 1px solid #455a64; padding-top: 1.5rem; opacity: 0.6; }

@media (max-width: 1200px) { .logo-text { font-size: 1rem; } }
@media (max-width: 768px) { nav { flex-direction: column; padding: 1rem; } .nav-links { margin: 1rem 0; } }