:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--paper:#f6f5ee;--ink:#293c32;--muted:#798477;--green:#355f49;--green-deep:#284c39;--line:#dce2d7;--card:#fffdf6;--felt:#e7eee2;font-synthesis:none;-webkit-font-smoothing:antialiased;font-family:ui-rounded,SF Pro Rounded,-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,sans-serif}*{box-sizing:border-box}html,body{overscroll-behavior:none;height:100%}html{touch-action:manipulation}body{color:var(--ink);background:var(--paper);margin:0}button,input{font:inherit}button{min-height:44px;color:var(--ink);border:1px solid var(--line);cursor:pointer;white-space:nowrap;background:#ffffffa6;border-radius:12px;justify-content:center;align-items:center;gap:8px;padding:0 17px;font-size:14px;font-weight:500;transition:background .16s,border-color .16s,box-shadow .16s,transform 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max(28px, env(safe-area-inset-left));margin:0 auto}.stage{flex-direction:column;gap:12px;height:100%;min-height:0;display:flex}.topbar{flex:0 0 50px;justify-content:space-between;align-items:center;gap:20px;display:flex}.brand{align-items:center;gap:11px;min-width:0;display:flex}.brand-mark{width:36px;height:36px;color:var(--green);background:#e4ecdc;border-radius:12px;place-items:center;display:grid}.brand-mark .icon{width:24px;height:24px}h1{letter-spacing:.025em;white-space:nowrap;margin:0;font-size:21px;font-weight:600}h2{letter-spacing:-.03em;margin:0 0 22px;font-size:27px;font-weight:600}p{line-height:1.6}.button-row{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.audio-controls{flex-wrap:nowrap;min-width:0}.audio-controls button{color:#697b69;background:0 0;border-color:#0000;min-height:38px;padding:0 10px;font-size:12px}.audio-controls [data-action=bgm-next]{max-width:244px}.audio-controls [data-action=bgm-next] 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body{overflow:hidden}.app-shell.is-board-fullscreen{z-index:2;width:100%;max-width:none;height:100vh;height:var(--app-height,100vh);height:100dvh;min-height:0;padding:8px;padding:max(8px, env(safe-area-inset-top)) max(8px, env(safe-area-inset-right)) max(8px, env(safe-area-inset-bottom)) max(8px, env(safe-area-inset-left));background:var(--paper);margin:0;position:fixed;top:0;bottom:0;left:0;right:0}.is-board-fullscreen .topbar{display:none}.is-board-fullscreen .stage{gap:6px}.is-board-fullscreen .play-layout{flex:1;grid-template-rows:36px minmax(0,1fr) 58px;gap:6px}.is-board-fullscreen .board-slot{padding:2px;overflow:hidden}.is-board-fullscreen .status-bar{padding:0 6px}.is-board-fullscreen .toolbar{max-width:100%}.is-board-fullscreen .board-frame{min-height:100%}.no-flex-gap .is-board-fullscreen .stage>.play-layout{margin-top:0}@media (max-width:680px) and (orientation:portrait){.is-board-fullscreen .play-layout{grid-template-rows:34px minmax(0,1fr) 66px}}@media (orientation:landscape) and (max-height:500px){.phone-landscape.is-board-fullscreen .play-layout{grid-template-rows:24px minmax(0,1fr);grid-template-columns:minmax(0,1fr) 66px;gap:5px}}@media (max-width:680px){.brand{flex:1}.brand h1{text-overflow:ellipsis;min-width:0;overflow:hidden}.audio-controls{flex:none}.audio-controls [data-action=music] span,.audio-controls [data-action=bgm-next] span{display:none}.audio-controls button{padding:0 7px}}.audio-controls button[aria-pressed=true],.toolbar button[data-action=music][aria-pressed=true],.toolbar button[data-action=sound][aria-pressed=true]{color:var(--green);background:#e5ecdf;border-color:#cbd8c1}