/* ---------- App rail: jump between the apps from anywhere on the page ----------
   Right edge on desktop, a bar at the bottom on phones. A slow gold light runs round its edge. */
@property --rail-a { syntax: "<angle>"; inherits: false; initial-value: 0deg; }
.app-rail { --rs: clamp(46px, 3.5vw, 58px); position: fixed; right: 16px; top: 50%; z-index: 40; display: grid; gap: 12px; padding: 18px 12px 16px; border-radius: 30px;
  background: color-mix(in srgb, var(--ink) 74%, transparent); border: 1px solid rgba(201, 161, 91, .32); backdrop-filter: blur(16px) saturate(150%); -webkit-backdrop-filter: blur(16px) saturate(150%);
  box-shadow: 0 0 0 1px rgba(0, 0, 0, .4), 0 24px 60px -20px rgba(0, 0, 0, .8), 0 0 46px -10px rgba(255, 176, 102, .45);
  transform: translate(calc(100% + 40px), -50%); opacity: 0; transition: transform .7s var(--ease-out), opacity .45s; animation: rail-breathe 4.5s ease-in-out infinite; }
.app-rail::before { content: ""; position: absolute; inset: -1px; border-radius: inherit; padding: 1.5px; pointer-events: none;
  background: conic-gradient(from var(--rail-a), transparent 0 55%, #ffb066 70%, #ffe27a 76%, #c9a15b 82%, transparent 92%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); mask-composite: exclude;
  animation: rail-spin 6s linear infinite; }
@keyframes rail-spin { to { --rail-a: 360deg; } }
@keyframes rail-breathe { 50% { box-shadow: 0 0 0 1px rgba(0, 0, 0, .4), 0 24px 60px -20px rgba(0, 0, 0, .8), 0 0 70px -6px rgba(255, 176, 102, .62); } }
.app-rail.show { transform: translate(0, -50%); opacity: 1; }
.app-rail .rt { font-family: var(--mono); font-size: 10px; letter-spacing: .24em; text-transform: uppercase; color: #e8cf9a; writing-mode: vertical-rl; justify-self: center; margin-bottom: 6px; }
.app-rail a { position: relative; display: block; width: var(--rs); height: var(--rs); }
.app-rail.show a { animation: rail-pop .6s var(--ease-out) backwards; }
.app-rail.show a:nth-of-type(2) { animation-delay: .05s; } .app-rail.show a:nth-of-type(3) { animation-delay: .1s; } .app-rail.show a:nth-of-type(4) { animation-delay: .15s; }
.app-rail.show a:nth-of-type(5) { animation-delay: .2s; } .app-rail.show a:nth-of-type(6) { animation-delay: .25s; }
@keyframes rail-pop { from { opacity: 0; transform: translateX(14px) scale(.8); } }
.app-rail .ri { display: block; width: 100%; height: 100%; border-radius: 15px; overflow: hidden; border: 1px solid var(--line-2, rgba(236, 230, 216, .2)); transition: transform .35s var(--ease-out), box-shadow .35s, border-color .35s; }
.app-rail .ri img, .app-rail .ri svg { display: block; width: 100%; height: 100%; object-fit: cover; }
.app-rail a:hover .ri, .app-rail a:focus-visible .ri { transform: scale(1.12); border-color: var(--c); box-shadow: 0 0 0 4px color-mix(in srgb, var(--c) 24%, transparent), 0 10px 34px -6px var(--c); }
.app-rail a:focus-visible { outline: none; }
.app-rail a[aria-current] .ri { border-color: var(--c); box-shadow: 0 0 0 3px var(--c), 0 0 30px -2px var(--c); animation: rail-cur 2.6s ease-in-out infinite; }
@keyframes rail-cur { 50% { box-shadow: 0 0 0 3px var(--c), 0 0 44px 2px var(--c); } }
.app-rail a[aria-current]::before { content: ""; position: absolute; left: -11px; top: 50%; width: 4px; height: 26px; translate: 0 -50%; border-radius: 4px; background: var(--c); box-shadow: 0 0 12px var(--c); }
.app-rail .rl { position: absolute; right: calc(100% + 18px); top: 50%; translate: 8px -50%; white-space: nowrap; pointer-events: none; opacity: 0;
  padding: 10px 15px; border-radius: 14px; background: #0b0d12; border: 1px solid color-mix(in srgb, var(--c) 50%, transparent); box-shadow: 0 14px 40px -12px rgba(0, 0, 0, .7), 0 0 24px -10px var(--c); transition: opacity .25s, translate .35s var(--ease-out); }
.app-rail a:hover .rl, .app-rail a:focus-visible .rl { opacity: 1; translate: 0 -50%; }
.app-rail .rl b { display: block; font-family: system-ui, -apple-system, "Segoe UI", sans-serif; font-weight: 700; font-size: 15px; color: #fff; }
.app-rail .rl i { display: block; font-style: normal; font-family: system-ui, -apple-system, "Segoe UI", sans-serif; font-size: 12px; color: var(--c); }
/* Smaller laptops: keep it slim so it stays clear of the page. */
@media (max-width: 1360px) and (min-width: 901px) { .app-rail { --rs: 44px; gap: 10px; padding: 16px 9px 14px; right: 10px; } }
@media (max-width: 900px) {
  .app-rail { --rs: 46px; top: auto; bottom: calc(12px + env(safe-area-inset-bottom, 0px)); right: 50%; display: flex; gap: 8px; padding: 9px; border-radius: 24px; transform: translate(50%, calc(100% + 40px)); }
  .app-rail.show { transform: translate(50%, 0); }
  .app-rail.show.tuck { transform: translate(50%, calc(100% + 40px)); opacity: 0; pointer-events: none; }
  .app-rail .rt, .app-rail .rl { display: none; }
  .app-rail.show a { animation-name: rail-pop-up; }
  @keyframes rail-pop-up { from { opacity: 0; transform: translateY(12px) scale(.8); } }
  .app-rail a[aria-current]::before { left: 50%; top: auto; bottom: -7px; width: 20px; height: 3px; translate: -50% 0; }
  body:has(.app-rail) .site-foot { padding-bottom: 96px; }
}
@media (max-width: 380px) { .app-rail { --rs: 40px; gap: 6px; padding: 8px; } }
html[data-calm] .app-rail, html[data-calm] .app-rail::before, html[data-calm] .app-rail a, html[data-calm] .app-rail .ri { transition: none; animation: none !important; }
@media (prefers-reduced-motion: reduce) { .app-rail, .app-rail::before, .app-rail a, .app-rail .ri { transition: none; animation: none !important; } }
/* Keep page content clear of the rail on desktop. */
@media (min-width: 901px) { body:has(.app-rail) .wrap { width: min(var(--max), 100% - 2 * max(var(--gutter), 100px)); } }