:root{--green:#2e7d32;--dark:#1f2937;--light:#f5f7fa;}
body{font-family:Arial,Helvetica,sans-serif;margin:0;background:var(--light);color:#222;line-height:1.7;}
header{background:linear-gradient(135deg,#2e7d32,#66bb6a);color:white;padding:42px 20px;text-align:center;}
header h1{margin:0;font-size:34px;}
header p{margin:10px 0 0;font-size:18px;}
nav{background:white;padding:14px;text-align:center;box-shadow:0 2px 8px rgba(0,0,0,.08);}
nav a{margin:0 12px;color:var(--green);font-weight:bold;text-decoration:none;}
main{max-width:900px;margin:28px auto;background:white;padding:34px;border-radius:14px;box-shadow:0 4px 14px rgba(0,0,0,.08);}
h2{color:var(--green);margin-top:28px;}
footer{text-align:center;padding:22px;color:#555;}
.card{border:1px solid #e5e7eb;border-radius:12px;padding:18px;margin:16px 0;background:#fafafa;}