:root{color-scheme:dark;--ink: #06171f;--jade: #65b8aa;--gold: #f4cd75;--cream: #fff0c5;font-family:Noto Sans SC,Microsoft YaHei,system-ui,sans-serif;background:var(--ink)}*{box-sizing:border-box}html,body{width:100%;height:100%;min-height:100%;margin:0;overflow:hidden;overscroll-behavior:none;touch-action:none;-webkit-user-select:none;user-select:none;background:var(--ink)}body{min-height:100dvh}#game-shell{width:100dvw;height:100dvh;min-height:100dvh;display:grid;place-items:center;position:relative;overflow:hidden;padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);background:radial-gradient(circle at 50% 38%,rgba(244,205,117,.18),transparent 46%),radial-gradient(circle at 18% 20%,rgba(78,169,152,.18),transparent 42%),linear-gradient(135deg,#0b2b36,#06171f 70%)}#game{width:100%;height:100%;min-width:0;min-height:0;display:grid;place-items:center;position:relative}#game canvas{display:block;margin:0!important;max-width:100%;max-height:100%;border:1px solid rgba(244,205,117,.82);border-radius:14px;box-shadow:0 0 0 1px #65b8aa66,0 18px 52px #0000009e;touch-action:none}.orientation-tip{display:none;position:fixed;top:0;right:0;bottom:0;left:0;place-items:center;padding:calc(20px + env(safe-area-inset-top)) calc(20px + env(safe-area-inset-right)) calc(20px + env(safe-area-inset-bottom)) calc(20px + env(safe-area-inset-left));color:#ffe9ad;background:radial-gradient(circle at 50% 42%,rgba(183,103,42,.22),transparent 38%),#160a07f5;border:0;letter-spacing:1px;text-align:center;font-size:clamp(16px,4vw,24px);line-height:1.6;z-index:100}.orientation-tip:before{content:"↔";display:block;margin:0!important;margin-bottom:8px;color:#f1c15d;font-size:clamp(34px,10vw,68px);line-height:1}body.is-portrait .orientation-tip{display:grid}body.is-portrait #game{visibility:hidden}