.site-header {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1000;
    width: 100%;
    height: 90px;
    background: linear-gradient(to bottom, #b7d8f7 0%, #a7cdef 100%);
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 2px solid #aaccee;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15);
}
.section-header {
    grid-column: 1 / -1;
    position: relative;
    text-align: center;
    margin-top: 60px;
    margin-bottom: 30px;
    font-size: 1.6rem;
    font-weight: 600;
}

.section-header::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 50%;
    height: 2px;
    background: #0077cc;
    z-index: 0;
}

.section-header span {
    background: #cfe8ff; /* your page background */
    padding: 0 12px;
    position: relative;
    z-index: 1;
}

.header-left,
.header-right {
    width: 150px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.header-center {
    flex: 1;
    text-align: center;
}

.logo {
    height: 80px;
    width: auto;
}