body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #0d1117;
    color: #fff;
}

header {
    padding: 80px 20px;
    text-align: center;
    background: linear-gradient(135deg, #1e2633, #0d1117);
}

.brand {
    font-size: 22px;
    letter-spacing: 1px;
    opacity: 0.85;
    margin-bottom: 18px;
}

header h1 {
    font-size: 46px;
    font-weight: 700;
    margin-bottom: 15px;
}

header p {
    font-size: 18px;
    opacity: 0.85;
    max-width: 750px;
    margin: 0 auto;
    line-height: 1.6;
}

.cta-btn {
    display: inline-block;
    margin-top: 28px;
    padding: 12px 32px;
    font-size: 17px;
    color: #fff;
    background: linear-gradient(135deg, #007bff, #00d4ff);
    border-radius: 8px;
    text-decoration: none;
    transition: 0.3s;
}

.cta-btn:hover {
    opacity: 0.88;
    transform: translateY(-2px);
}

section {
    padding: 60px 20px;
    max-width: 1100px;
    margin: 0 auto;
}

.section-title {
    text-align: center;
    font-size: 30px;
    margin-bottom: 20px;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.feature-box {
    background: #161b22;
    padding: 30px;
    border-radius: 10px;
    border: 1px solid #1f2937;
    transition: 0.3s;
}

.feature-box:hover {
    transform: translateY(-5px);
    border-color: #00d4ff;
}

.feature-box h3 {
    margin-top: 0;
    font-size: 22px;
    color: #00d4ff;
}

.content-block {
    margin-top: 60px;
    text-align: center;
}

.content-block p {
    opacity: 0.85;
    font-size: 17px;
    line-height: 1.7;
    max-width: 900px;
    margin: 0 auto;
}

footer {
    text-align: center;
    padding: 30px 20px;
    opacity: 0.5;
    font-size: 14px;
    margin-top: 40px;
}