:root{font-family:"Microsoft YaHei",system-ui,sans-serif;color:#173846;background:#102b37;color-scheme:light;font-synthesis:none}
*{box-sizing:border-box}html,body{margin:0;width:100%;height:100%;overflow:hidden}button{font:inherit;cursor:pointer;border:1px solid #d3e4e8;border-radius:9px;background:#fff;color:#173846;padding:7px 12px;white-space:nowrap}button:hover{background:#e9f7f3}button:disabled{opacity:.45;cursor:default}button:focus-visible{outline:3px solid #f4b942;outline-offset:2px}
#toolbar{height:44px;display:flex;align-items:center;gap:10px;justify-content:space-between;padding:4px max(10px,env(safe-area-inset-right)) 4px max(10px,env(safe-area-inset-left));background:#f2f9f6;position:relative;z-index:3}#toolbar strong{font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}nav{display:flex;gap:5px}nav button{font-size:12px;padding:5px 8px}
#viewport{position:relative;height:calc(100% - 44px);display:grid;place-items:center;background:radial-gradient(ellipse at center,#234854,#102b37 80%)}#surface{position:relative;flex:none;overflow:hidden;box-shadow:0 6px 40px #0004}canvas{display:block;width:100%;height:100%;touch-action:none;user-select:none;-webkit-user-select:none;-webkit-tap-highlight-color:transparent}
#welcome{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:28px;color:#173846;background:radial-gradient(circle at 18% 22%,#fff8 0 10%,transparent 10.2%),linear-gradient(150deg,#86e5df,#d3eec2 58%,#f6d88e)}#welcome .eyebrow{font-size:15px;font-weight:700;letter-spacing:4px}h1{font-size:clamp(30px,5.5vw,68px);letter-spacing:1px;margin:20px 0 10px}#welcome p{line-height:1.8;margin:7px 0 24px}#welcome .hint{font-size:12px;margin-top:20px;color:#42646a}.primary{background:#173846;color:#fff;border:0;font-weight:700;font-size:18px;min-width:190px;padding:14px 32px;box-shadow:0 8px 20px #17384620}.primary:hover{background:#255464}
[hidden]{display:none!important}#portraitHint{position:absolute;inset:0;background:#123343f5;color:#fff;display:grid;place-items:center;text-align:center;padding:24px;z-index:2}#portraitHint strong{font-size:26px}#portraitHint p{font-size:14px;color:#c4dce2;line-height:1.8}
#toast{position:fixed;bottom:22px;left:50%;transform:translateX(-50%);max-width:90vw;padding:12px 20px;border-radius:12px;color:white;background:#102c3be8;z-index:12;text-align:center;font-size:14px;pointer-events:none}#storageWarning{position:fixed;bottom:0;left:0;right:0;background:#fff1c7;color:#714d08;text-align:center;padding:6px 12px;font-size:12px;z-index:10;pointer-events:none}
dialog{max-width:min(860px,94vw);width:860px;max-height:85vh;border:0;border-radius:18px;background:#f7fbf9;padding:24px;box-shadow:0 20px 90px #0006;color:#173846}dialog::backdrop{background:#102c3bcc}.dialog-head{display:flex;align-items:center;justify-content:space-between;gap:15px}.dialog-head h2{margin:0 0 16px;font-size:23px}.dialog-head button{margin-bottom:16px}dialog p{font-size:14px;line-height:1.8;color:#4a6974}#gameList{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px}#gameList button{text-align:left;padding:14px;border-left:5px solid var(--game-color,#39bfa3);min-height:70px}#gameList small{display:block;font-size:11px;color:#597985;margin-top:6px}#recordList{display:grid;gap:6px}.record-row{display:flex;justify-content:space-between;gap:16px;padding:10px 14px;background:white;border-radius:8px;font-size:14px}
@media(max-width:700px){#toolbar{gap:3px;padding-left:5px;padding-right:5px}#toolbar strong{display:none}nav{width:100%;justify-content:center;gap:4px}nav button{font-size:11px;padding:6px 7px}dialog{padding:16px}#gameList{grid-template-columns:repeat(2,minmax(0,1fr))}}

/* Explicit scroll container for Android stock WebView 83 dialog UA styles. */
dialog{overflow:auto}