/* Small, isolated navigation layer. Existing calculator layout is not changed. */
.nav .site-links{display:flex;align-items:center;justify-content:center;gap:6px;flex:1;margin-left:auto;min-width:0}
.nav .site-links a{display:inline-flex;align-items:center;justify-content:center;white-space:nowrap;min-height:37px;padding:7px 14px;text-decoration:none;border-radius:10px;color:#516782;font-size:13px;font-weight:650}
.nav .site-links a:hover{color:#1b54b9;background:#edf4ff}
.nav .site-links a.active{color:#1b54b9;background:#edf4ff}
.nav .admin-lock{width:37px;height:37px;flex:0 0 37px;display:grid;place-items:center;color:#405d7f;text-decoration:none;border:1px solid #dbe5f1;background:#fff;border-radius:11px;transition:background .15s,border-color .15s}
.nav .admin-lock:hover{background:#edf4ff;border-color:#b7cdf1}
.nav .admin-lock:focus-visible,.nav .site-links a:focus-visible{outline:3px solid #84aefa;outline-offset:2px}
.nav .admin-lock svg{width:18px;height:18px}
@media(max-width:580px){.nav{gap:8px}.nav .site-links{gap:0}.nav .site-links a{font-size:12px;padding:7px 8px;min-height:38px}.nav .admin-lock{width:34px;height:34px;flex-basis:34px}.nav .logo{font-size:20px}}
@media(max-width:360px){.nav .site-links a{padding:6px 5px;font-size:11px}.nav .logo{font-size:18px}}

@media(max-width:390px){.nav{gap:6px;padding-left:9px;padding-right:9px}.nav .site-links{gap:0}.nav .site-links a{font-size:11px;padding:5px 4px}.nav .logo{font-size:18px}.nav .admin-lock{width:32px;height:32px;flex-basis:32px}}