.tunnel-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 14px;
}
.tunnel-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 20px;
}
.tunnel-card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 14px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}
.tunnel-card h3 .state-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.state-dot.active { background: var(--accent-green); box-shadow: 0 0 8px rgba(34,197,94,0.4); }
.state-dot.retired { background: var(--text-muted); }
.tunnel-meta { display: flex; flex-direction: column; gap: 5px; }
.tunnel-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.78rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
  padding: 4px 0;
  border-bottom: 1px solid var(--border-subtle);
}
.tunnel-row:last-child { border-bottom: none; }
.tunnel-row .tlabel { color: var(--text-secondary); }
.tunnel-row .tvalue { text-align: right; }

.node-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
}
.node-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 18px;
  transition: border-color var(--transition-fast);
}
.node-card:hover { border-color: var(--border-accent); }
.node-card h3 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text-primary);
}
.node-meta { display: flex; flex-direction: column; gap: 4px; }
.node-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.72rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
}
.node-row .nlabel { color: var(--text-secondary); }

.security-notice {
  padding: 32px 24px;
  margin: 0 auto 24px;
  max-width: 1200px;
}
.notice-content {
  display: flex;
  gap: 16px;
  background: rgba(245,158,11,0.04);
  border: 1px solid rgba(245,158,11,0.12);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  align-items: flex-start;
}
.notice-icon {
  font-size: 1.3rem;
  flex-shrink: 0;
  color: var(--accent-amber);
}
.notice-text p {
  font-size: 0.83rem;
  color: var(--text-secondary);
  line-height: 1.6;
}
.notice-text p:first-child { margin-bottom: 4px; }
.notice-text strong { color: var(--accent-amber); }
@media (max-width: 600px) {
  .tunnel-grid { grid-template-columns: 1fr; }
  .node-grid { grid-template-columns: repeat(2, 1fr); }
  .notice-content { flex-direction: column; }
  .tunnel-row { flex-direction: column; align-items: flex-start; gap: 2px; }
}
@media (max-width: 400px) {
  .node-grid { grid-template-columns: 1fr; }
}