* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: Arial, Helvetica, sans-serif;
}

body {
    color: #222;
    line-height: 1.6;
    background: #fff;
}

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

.header {
    background: #0f172a;
    color: #fff;
    padding: 20px 0;
    position: sticky;
    top: 0;
}

.logo {
    font-size: 24px;
    font-weight: bold;
}

.header nav {
    float: right;
}

.header nav a {
    color: #fff;
    margin-left: 20px;
    text-decoration: none;
    font-size: 14px;
}

.hero {
    background: linear-gradient(135deg, #1e293b, #334155);
    color: #fff;
    padding: 100px 0;
}

.hero h1 {
    font-size: 42px;
    margin-bottom: 20px;
}

.hero button {
    padding: 12px 24px;
    border: none;
    background: #38bdf8;
    color: #000;
    font-size: 16px;
    cursor: pointer;
}

.section {
    padding: 80px 0;
}

.section.gray {
    background: #f1f5f9;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.card {
    padding: 30px;
    border: 1px solid #e5e7eb;
    border-radius: 6px;
    background: #fff;
}

.clients {
    list-style: none;
    margin-top: 30px;
}

.clients li {
    padding: 10px 0;
}

.footer {
    background: #0f172a;
    color: #cbd5f5;
    padding: 40px 0;
    font-size: 14px;
}