.layout-cistern {}
.cistern-shell { background:linear-gradient(180deg,#e2e8f0,#cbd5e1); }
.cistern-header { max-width:var(--content-max-width); margin:0 auto; padding:24px 16px; background:var(--theme-card); border:2px solid #94a3b8; box-shadow:inset 0 4px 12px rgba(0,0,0,0.08); }
.cistern-tank { height:8px; background:linear-gradient(90deg,#0ea5e9,#64748b); margin:12px 0; border-radius:4px; }
.cistern-footer { margin:32px 16px 48px; padding:16px; border:2px solid #64748b; background:var(--theme-card); font-size:0.8rem; }

.cistern-main { width: min(var(--content-max-width), calc(100% - 32px)); margin: 0 auto; padding-bottom: 40px; }
.cistern-intro { margin: 24px 0; }
.cistern-intro h2 { font-family: var(--font-display); margin: 0 0 8px; }
.cistern-about { margin-top: 32px; padding: 20px; border: 1px solid var(--border-color); background: var(--theme-card); }
.cistern-tag { margin: 8px 0 0; font-size: 0.85rem; color: var(--text-muted); }
.cistern-shell h1 a { text-decoration: none; color: inherit; }