/* Native, keyboard-accessible directory branches, shared by every games page. */
.gd-side{max-height:calc(100svh - 36px);overflow:auto;overscroll-behavior:contain;scrollbar-width:thin;padding-right:5px}
.game-tree,.game-tree ul{list-style:none;padding:0;margin:0}
.game-tree ul{margin-left:10px;padding-left:8px;border-left:1px solid #cbd8e8}
.game-tree li{margin:3px 0}
.game-tree summary{display:flex;align-items:flex-start;gap:4px;cursor:pointer;list-style:none;border-radius:6px}
.game-tree summary::-webkit-details-marker{display:none}
.game-tree summary::before{content:'›';flex:0 0 14px;display:grid;place-items:center;color:#185eb2;font:700 19px/1.5 Arial,sans-serif;padding-top:5px;transition:transform .15s}
.game-tree details[open]>summary::before{transform:rotate(90deg)}
.game-tree .tree-leaf{padding-left:18px}
.game-explorer .game-tree a{display:flex;gap:7px;align-items:baseline;flex:1;min-width:0;min-height:38px;padding:8px 5px;border:1px solid transparent;border-radius:6px;color:#4c6179;font:400 12px/1.5 Arial,sans-serif;text-decoration:none}
.game-explorer .game-tree a .tree-code{font-size:10px;min-width:0;flex:none;color:#185eb2}
.game-explorer .game-tree a .tree-title{min-width:0;overflow-wrap:anywhere}
.game-explorer .game-tree a.ancestor{font-weight:700;color:#244d7b}
.game-explorer .game-tree a.current{font-weight:700;color:#104a8d;background:#dceaff;border-color:#9abce7;box-shadow:inset 3px 0 #185eb2}
.game-explorer .game-tree a:hover{color:#104a8d;background:#eef5ff;border-color:#cbd8e8}
.game-tree summary:focus-visible,.game-tree a:focus-visible{outline:2px solid #185eb2;outline-offset:2px}
.gd-side .game-explorer{display:block}
.gd-mobile-nav .game-explorer{display:block;padding:8px 12px;max-height:65svh;overflow:auto}
.gd-mobile-nav .game-explorer .game-tree a{font-size:13px}
.standalone-explorer{position:fixed;z-index:10;left:0;top:0;bottom:0;width:230px;background:#f5f8fd;border-right:1px solid #cbd8e8;padding:20px 12px;overflow:auto;overscroll-behavior:contain;scrollbar-width:thin;font-family:Arial,sans-serif;color:#152b47}
.standalone-explorer>summary{font-size:12px;letter-spacing:.06em;font-weight:700;padding:8px;cursor:pointer}
.standalone-explorer .explorer-home{display:block;padding:10px 8px;color:#185eb2;font-size:13px;text-decoration:none}
body.has-game-explorer{padding-left:230px}
@media(max-width:960px){body.has-game-explorer{padding-left:0}.standalone-explorer{position:relative;width:auto;border-right:0;border-bottom:1px solid #cbd8e8;max-height:65svh;padding:8px 14px}.standalone-explorer>summary{min-height:44px;display:flex;align-items:center}.standalone-explorer:not([open])>.game-explorer,.standalone-explorer:not([open])>.explorer-home{display:none}}
@media(prefers-reduced-motion:reduce){.game-tree summary::before{transition:none}}