body {
    margin: 0;
    font-family: "Inter", sans-serif;
    background: #f5f6fa;
    color: #333;
}

.header {
    background: white;
    padding: 15px 0;
    border-bottom: 1px solid #eee;
}

.nav {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav .logo {
    font-size: 22px;
    font-weight: 700;
}

.nav ul {
    list-style: none;
    display: flex;
    gap: 25px;
}

.nav ul li a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
}

.nav ul li a.active,
.nav ul li a:hover {
    color: #5d3dfd;
}

.container {
    max-width: 900px;
    margin: 40px auto;
    padding: 0 20px;
}

h1 {
    font-size: 34px;
    margin-bottom: 15px;
}

.intro {
    font-size: 18px;
    color: #444;
    margin-bottom: 25px;
}

.card {
    background: white;
    padding: 25px;
    margin-bottom: 20px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.06);
}

.card h2 {
    margin-top: 0;
    color: #333;
}

ul {
    padding-left: 18px;
}

.footer {
    text-align: center;
    padding: 25px;
    margin-top: 40px;
    background: #fff;
    border-top: 1px solid #eee;
}