body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #0b0f14;
    color: #f5f7fa;
    line-height: 1.6;
}

.container {
    width: 90%;
    max-width: 1100px;
    margin: 0 auto;
}

.site-header {
    background: #101720;
    border-bottom: 1px solid #1f2a37;
    padding: 20px 0;
}

.brand .logo-text {
    font-size: 28px;
    font-weight: bold;
}

.brand .tagline {
    color: #9fb3c8;
    margin-top: 4px;
}

.nav {
    margin-top: 15px;
}

.nav a {
    color: #dce7f3;
    text-decoration: none;
    margin-right: 20px;
}

.nav a:hover {
    color: #5fb3ff;
}

.hero {
    padding: 60px 0 30px;
}

.hero h1 {
    font-size: 42px;
    margin-bottom: 10px;
}

.lead {
    font-size: 18px;
    max-width: 700px;
    color: #c7d4e2;
}

.btn {
    display: inline-block;
    margin-top: 20px;
    padding: 12px 22px;
    background: #1677ff;
    color: white;
    text-decoration: none;
    border-radius: 8px;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    padding: 30px 0 60px;
}

.card {
    background: #121a24;
    border: 1px solid #1f2a37;
    border-radius: 12px;
    padding: 24px;
}

.site-footer {
    border-top: 1px solid #1f2a37;
    padding: 25px 0;
    color: #9fb3c8;
    font-size: 14px;
}