body, h1, h2, p, a { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Arial', sans-serif; line-height: 1.6; background-color: #f9f9f9; color: #222; }
header { display: flex; justify-content: space-between; align-items: center; padding: 20px; background-color: #ffffff; box-shadow: 0 2px 5px rgba(0,0,0,0.1); }
header .logo { height: 50px; }
header nav a { margin-left: 15px; text-decoration: none; color: #333; font-weight: bold; }
.banner { position: relative; text-align: center; background: #e0f7fa; padding: 80px 20px; }
.banner img { width: 100%; max-height: 300px; object-fit: cover; opacity: 0.3; position: absolute; top: 0; left: 0; }
.banner-text { position: relative; z-index: 1; }
.banner-text h1 { font-size: 2.5em; color: #00796b; margin-bottom: 10px; }
.banner-text p { font-size: 1.2em; margin-bottom: 20px; }
.buy-btn { padding: 12px 25px; background-color: #00796b; color: #fff; text-decoration: none; font-weight: bold; border-radius: 5px; transition: 0.3s; }
.buy-btn:hover { background-color: #004d40; }
.content { padding: 40px 20px; max-width: 800px; margin: auto; }
.content h2 { font-size: 2em; margin-bottom: 15px; color: #00796b; }
.content p { font-size: 1.1em; line-height: 1.8; }
footer { text-align: center; padding: 20px; background-color: #ffffff; box-shadow: 0 -2px 5px rgba(0,0,0,0.1); font-size: 0.9em; color: #555; }