/* গ্লোবাল স্টাইল */
body { margin: 0; font-family: 'Segoe UI', sans-serif; color: #333; }
a { text-decoration: none; }

/* নেভিগেশন */
nav { display: flex; justify-content: space-between; align-items: center; padding: 20px 5%; background: #fff; }
.logo { font-size: 24px; font-weight: bold; color: #2563eb; }
.btn-reg { background: #2563eb; color: white; padding: 10px 20px; border-radius: 5px; }

/* হিরো সেকশন */
.hero { background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)), url('hero-bg.jpg'); background-size: cover; height: 80vh; color: white; text-align: center; }
.hero-content { padding-top: 100px; }
.hero-content h1 { font-size: 45px; margin-bottom: 20px; }
.hero-content span { color: #f59e0b; }
.cta-btn { background: #16a34a; color: white; padding: 15px 40px; border-radius: 30px; font-size: 20px; font-weight: bold; }

/* ফিচার সেকশন */
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 20px; padding: 50px 5%; background: #f8fafc; }
.feature-card { background: white; padding: 30px; text-align: center; border-radius: 15px; box-shadow: 0 5px 15px rgba(0,0,0,0.05); }
.feature-card i { font-size: 40px; color: #2563eb; margin-bottom: 15px; }