main{flex:1;display:flex;flex-direction:column;align-items:center;padding:24px;gap:24px}.panel-layout{width:100%;max-width:1100px;display:grid;grid-template-columns:1fr 1.5fr;gap:24px}.card{background:var(--bg2);border:1px solid var(--border);border-radius:12px;padding:20px;display:flex;flex-direction:column;gap:14px}.card-header{color:#fff;font-size:14px;font-weight:600;border-bottom:1px solid var(--border);padding-bottom:10px}.control-group{display:flex;flex-direction:column;gap:6px}.control-group label{font-size:12px;font-weight:600;color:var(--muted);text-transform:uppercase}input{background:var(--bg3);border:1px solid var(--border);color:#fff;padding:10px;border-radius:var(--r);outline:none}.bit-calculation{font-family:monospace;font-size:14px;line-height:1.6}.mono{color:var(--text)}.mono-net{color:var(--accent);font-weight:700}.divider{border-bottom:1px solid var(--border);margin:8px 0}@media(max-width:768px){.panel-layout{grid-template-columns:1fr}}.t-subnet-bitwise-and-1,.t-subnet-bitwise-and-1-84748{margin-top:10px}