body {
    margin: 0;
    font-family: system-ui, sans-serif;
    background: #f4f6f8;
}

.main-header {
    background: #2c3e50;
    color: #fff;
}

.header-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.main-header a {
    color: #fff;
    margin-left: 15px;
    text-decoration: none;
}

.main-content {
    max-width: 1100px;
    margin: 30px auto;
    padding: 0 15px;
}

.card {
    background: #fff;
    padding: 20px;
    border-radius: 6px;
    box-shadow: 0 2px 4px rgba(0,0,0,.05);
}

form {
    max-width: 600px;
}

.form-actions {
    margin-top: 20px;
    display: flex;
    gap: 10px;
}