.install-guide{box-sizing:border-box;width:min(94vw,480px);max-height:90dvh;overflow:auto;overscroll-behavior:contain;border:2px solid #bad7cf;border-radius:24px;padding:22px;background:#f8fcf6;color:#285c60;box-shadow:0 16px 60px #122f4240}.install-guide::backdrop{background:#173946b8}.install-guide header{display:flex;justify-content:space-between;align-items:start}.install-guide header img{border-radius:16px}.install-guide header button{width:40px;height:40px;border:1px solid #bad7cf;border-radius:12px;background:white;color:#285c60;font-size:24px}.install-guide h2{font-size:24px;line-height:1.4;margin:16px 0 10px}.install-guide p{font-size:13px;line-height:1.7}.install-guide nav{display:flex;gap:5px;margin:18px 0}.install-guide nav button{flex:1;min-height:42px;border:1px solid #bad7cf;background:white;border-radius:10px;color:#285c60;font-size:12px}.install-guide nav [aria-pressed=true]{background:#247c75;color:white;border-color:#247c75}.install-guide ol{padding-left:23px;display:grid;gap:15px;font-size:14px;line-height:1.5}.install-guide li span{display:block;font-size:12px;color:#5c7775;margin-top:3px}.install-guide a{font-size:12px;color:#247c75}.install-guide .install-note{background:#eaf3ec;padding:12px;border-radius:12px;font-size:11px;margin-top:20px}.install-guide .install-continue,#installNative{width:100%;min-height:46px;border:0;border-radius:12px;background:#287b72;color:white;font-weight:800;font-size:15px;margin:6px 0}.install-dismiss{font-size:12px;display:flex;align-items:center;gap:7px;margin-top:12px}.install-banner{display:flex;align-items:center;justify-content:space-between;gap:10px;max-width:1100px;margin:12px auto;padding:10px 14px;border:1px solid #c7ddd2;border-radius:14px;background:#f6fbef;font-size:12px;color:#426b5e}.install-banner button{border:1px solid #bdd4c6;border-radius:10px;padding:8px 14px;min-height:38px;background:white;color:#35695e;font-weight:700}.install-banner[hidden],.install-guide [hidden]{display:none!important}.install-settings{margin-top:24px;border-top:1px solid #d4e3db;padding-top:12px}.game-intro .intro-difficulty{border:0;padding:0;margin:15px 0}.intro-difficulty legend{font-weight:800;font-size:13px;margin-bottom:8px}.intro-difficulty .intro-options{display:flex;gap:8px}.intro-difficulty button{flex:1;min-height:56px;padding:9px 5px;border:2px solid #bfd6c9;border-radius:13px;background:white;color:#42685f;font-size:14px;font-weight:800}.intro-difficulty button small{display:block;font-size:10px;font-weight:400;margin-top:3px}.intro-difficulty button[aria-pressed=true]{background:#e1f4e6;border-color:#27866f;color:#19654f}.fit-toolbar .game-bgm{font-size:9px}.fit-toolbar .game-difficulty{width:auto!important;padding:0 8px!important;font-size:11px;min-width:58px}