.site-top-nav {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 8px 12px;
    padding: 12px 24px;
    background: linear-gradient(180deg, #ffffff 0%, #f5f8fc 100%);
    border-bottom: 1px solid #eef1f6;
    box-shadow: 0 3px 14px rgba(24, 137, 251, 0.06);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
                 "Microsoft YaHei", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
    font-size: 15px;
    font-weight: 500;
    letter-spacing: 0.5px;
}
.site-top-nav a {
    position: relative;
    display: inline-flex;
    align-items: center;
    color: #4a5568;
    text-decoration: none;
    padding: 8px 18px;
    border-radius: 999px;
    white-space: nowrap;
    transition: color .2s ease, background .2s ease, box-shadow .2s ease, transform .2s ease;
}
.site-top-nav a:hover {
    color: #fff;
    background: linear-gradient(135deg, #1889fb 0%, #3aa6ff 100%);
    box-shadow: 0 6px 16px rgba(24, 137, 251, 0.35);
    transform: translateY(-2px);
}
.site-top-nav .nav-ico {
    margin-right: 7px;
    font-size: 15px;
    color: #1889fb;
    transition: color .2s ease;
}
.site-top-nav a:hover .nav-ico {
    color: #fff;
}
@media (max-width: 768px) {
    .site-top-nav {
        gap: 6px 8px;
        padding: 10px 14px;
        font-size: 14px;
    }
    .site-top-nav a {
        padding: 7px 14px;
    }
}
@media (min-width: 769px) {
    .site-top-nav {
        margin-left: 280px;
    }
}