body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; margin: 0; padding: 0; background: #e8f0f5; color: #222; }
header, footer { background: #003b5c; color: #fff; text-align: center; padding: 1em; }
nav { background: #005b88; text-align: center; padding: 1em 0; }
nav a { color: white; margin: 0 15px; text-decoration: none; font-weight: bold; }
main { padding: 2em; max-width: 900px; margin: 0 auto; background: white; box-shadow: 0 0 10px rgba(0,0,0,0.1); border-radius: 8px; }
img.responsive { width: 100%; max-width: 800px; height: auto; display: block; margin: 1.5em auto; border-radius: 6px; }
h2 { color: #003b5c; border-bottom: 2px solid #ccc; padding-bottom: 0.3em; }
ul { padding-left: 1.5em; }
ul li { margin-bottom: 0.5em; }
footer { font-size: 0.9em; }