/* Reset & Base */
* { box-sizing:border-box; margin:0; padding:0; }
body { font-family: Arial, sans-serif; color: #333; line-height: 1.6; }
a { color: #0057a3; text-decoration: none; }
a:hover { text-decoration: underline; }

/* Layout */
header, footer { background: #0057a3; color: #fff; }
header { position: sticky; top: 0; z-index: 100; }
nav { display: flex; justify-content: space-between; align-items: center; padding: 1rem 2rem; }
nav ul { list-style: none; display: flex; gap: 1.5rem; }
.hero { background: #f5f5f5; text-align: center; padding: 4rem 2rem; }
.section { padding: 3rem 2rem; }
.section-title { font-size: 2rem; text-align: center; margin-bottom: 2rem; }

/* Product Grid */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 2rem; }
.card { border: 1px solid #ddd; border-radius: 8px; overflow: hidden; background: #fff; display: flex; flex-direction: column; }
.card img { width: 100%; height: auto; }
.card-content { padding: 1rem; flex: 1; display: flex; flex-direction: column; }
.card-content h3 { margin-bottom: .5rem; color: #0057a3; }
.card-content p { flex: 1; margin-bottom: 1rem; }
.card-content .btn { background: #28a745; color: #fff; padding: .75rem 1rem; text-align: center; border-radius: 4px; }

/* Buttons */
.btn-primary { background: #0057a3; color: #fff; padding: .75rem 1.5rem; border-radius: 4px; }
.btn-secondary { background: #eee; color: #0057a3; padding: .75rem 1.5rem; border-radius: 4px; }

/* Footer */
footer { text-align: center; padding: 2rem; font-size: .9rem; }
footer a { color: #fff; }