/* Shared section navigation: one position, rhythm and active state across pages. */
.page-rail{position:fixed;right:8px;top:50%;transform:translateY(-50%);display:grid;gap:6px;z-index:25;font:11px/1 Consolas,'Courier New',monospace;color:#888;max-height:85svh;overflow-y:auto;scrollbar-width:none}
.page-rail::-webkit-scrollbar{display:none}
.page-rail a,.page-rail button{display:flex;width:44px;min-height:44px;align-items:center;justify-content:center;color:inherit;border:0;background:transparent;padding:0;font:inherit;text-decoration:none;cursor:pointer}
.page-rail [aria-current=location]{color:#111}
.page-rail a:hover,.page-rail button:hover{color:#111;text-decoration:none}
.page-rail a:focus-visible,.page-rail button:focus-visible{outline:1px solid #444;outline-offset:-6px;border-radius:4px}
@media(max-width:768px){.page-rail{right:2px;gap:4px;font-size:9px}.page-rail a,.page-rail button{width:22px;min-height:32px}.page-rail a:focus-visible,.page-rail button:focus-visible{outline-offset:-2px}}