.sidebar{background:#fff;border-bottom:1px solid #dce4ea;padding:1rem 3rem;display:flex;align-items:center;justify-content:space-between}.sidebar nav{display:flex;gap:1rem}.sidebar nav a{text-decoration:none;font:bold .9rem Arial}.sidebar-note{display:none}.page{min-height:100vh}.contact-card{background:#fff;padding:2rem;border-radius:18px;border:1px solid #d9e6ed}@media(max-width:650px){.sidebar{padding:1rem;display:block}.sidebar nav{margin-top:1rem;flex-wrap:wrap}}