body {
    margin: 0;
    font-family: 'Segoe UI', Arial, sans-serif;
    background: #f4f6f9;
    color: #1f2937;
}

.container {
    width: 90%;
    max-width: 1100px;
    margin: auto;
}

header {
    background: white;
    padding: 20px 0;
    border-bottom: 1px solid #e5e7eb;
}

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

.logo {
    font-weight: 600;
    font-size: 18px;
}

nav a {
    margin-left: 20px;
    text-decoration: none;
    color: #374151;
}

.nav-cta {
    font-weight: 600;
}

.hero {
    background: linear-gradient(135deg, #0f172a, #1e3a8a);
    color: white;
    text-align: center;
    padding: 100px 20px;
}

.hero h1 {
    font-size: 40px;
    margin-bottom: 20px;
}

.hero-buttons a {
    margin: 10px;
}

.section {
    padding: 80px 0;
}

.light {
    background: #ffffff;
}

.dark {
    background: #111827;
    color: white;
}

.feature-grid, .benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.feature, .benefits-grid div {
    background: rgba(255,255,255,0.05);
    padding: 25px;
    border-radius: 8px;
}

.light .feature, 
.light .benefits-grid div {
    background: #f9fafb;
}

.problem-list {
    margin-top: 30px;
    line-height: 1.8;
}

.btn-primary {
    background: #2563eb;
    color: white;
    padding: 12px 28px;
    border-radius: 6px;
    text-decoration: none;
    display: inline-block;
    font-weight: 600;
}

.btn-secondary {
    background: transparent;
    border: 2px solid white;
    color: white;
    padding: 12px 28px;
    border-radius: 6px;
    text-decoration: none;
}

.large {
    padding: 16px 36px;
    font-size: 18px;
}

.cta {
    background: #1e3a8a;
    color: white;
    text-align: center;
}

footer {
    background: #0f172a;
    color: #9ca3af;
    text-align: center;
    padding: 20px 0;
}