* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: #f8fafc;
    color: #1e293b;
    line-height: 1.6;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header & Nav */
.header {
    background-color: #ffffff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo-img {
    max-height: 60px;
    width: auto;
    display: block;
}

.nav {
    display: flex;
    gap: 20px;
}

.nav a {
    text-decoration: none;
    color: #475569;
    font-weight: 600;
    font-size: 0.95rem;
    transition: color 0.2s ease;
}

.nav a:hover, .nav a.active {
    color: #2563eb;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
    color: white;
    text-align: center;
    padding: 60px 20px;
}

.hero h1 {
    font-size: 2.2rem;
    margin-bottom: 15px;
}

.hero-subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* Grid & Cards */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin-top: 40px;
}

.feature-card {
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    border: 1px solid #e2e8f0;
    text-align: center;
}

.feature-card h3 {
    color: #1e3a8a;
    margin-bottom: 15px;
    font-size: 1.25rem;
}

.feature-card p {
    color: #64748b;
    font-size: 0.95rem;
}

/* Buttons */
.btn {
    display: inline-block;
    background-color: #2563eb;
    color: white;
    padding: 10px 20px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    transition: background-color 0.2s ease;
}

.btn:hover {
    background-color: #1d4ed8;
}

/* Footer */
.footer {
    background-color: #0f172a;
    color: #94a3b8;
    text-align: center;
    padding: 30px 20px;
    margin-top: 60px;
    font-size: 0.9rem;
}

.footer a {
    color: #cbd5e1;
    text-decoration: none;
}

.footer a:hover {
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        height: auto;
        padding: 15px 0;
    }
    
    .nav {
        flex-wrap: wrap;
        justify-content: center;
        margin-top: 15px;
        gap: 12px;
    }
    
    .hero h1 {
        font-size: 1.6rem;
    }
}