:root{color-scheme:dark}*{box-sizing:border-box}html,body{margin:0;height:100%}body{background:#161b24;color:#e6e9ef;font-family:system-ui,-apple-system,sans-serif;-webkit-tap-highlight-color:transparent}#app{min-height:100%;display:flex;flex-direction:column}.screw-board-wrap{flex:1;display:flex;flex-direction:column;padding:12px;gap:16px}.screw-board{position:relative;flex:1;max-width:480px;width:100%;margin:0 auto;aspect-ratio:100 / 140}.plate{position:absolute;background:#3a4150;border-radius:10px;box-shadow:4px 4px #00000059;transition:opacity .25s}.screw{position:absolute;width:9%;aspect-ratio:1;border-radius:50%;transform:translate(-50%,-50%);border:3px solid rgba(0,0,0,.35);padding:0;cursor:pointer;transition:transform .12s,opacity .2s;display:flex;align-items:center;justify-content:center}.screw:active{transform:translate(-50%,-50%) scale(.88)}.screw.locked{filter:grayscale(.6) brightness(.7);cursor:not-allowed}.screw-glyph{font-size:1rem;line-height:1;color:#fff;pointer-events:none;text-shadow:0 0 2px rgba(0,0,0,.85),0 0 1px rgba(0,0,0,.85)}.screw-tray{display:flex;gap:12px;justify-content:center;padding-bottom:env(safe-area-inset-bottom)}.bin{display:flex;flex-wrap:wrap;gap:4px;padding:8px;border-radius:10px;border:2px solid var(--bin, #5b6472);background:#ffffff0a;justify-content:center}.bin.empty{border-style:dashed;opacity:.5;min-width:56px}.bin-glyph{flex-basis:100%;text-align:center;font-size:14px;line-height:1;color:var(--bin, #5b6472)}.hole{width:14px;height:20px;border-radius:4px;border:1px dashed var(--bin, #5b6472)}.hole.filled{background:var(--bin, #5b6472);border-style:solid}.game-header{display:flex;align-items:center;gap:8px;padding:8px 12px}.game-status{flex:1;font-size:14px;color:#f59e0b}.game-body{flex:1;position:relative;display:flex;flex-direction:column}.ui-btn{background:#2a313d;color:#e6e9ef;border:1px solid #3a4150;border-radius:8px;padding:8px 12px;font-size:14px;cursor:pointer}.ui-btn.primary{background:#3b82f6;border-color:#3b82f6}.win-overlay{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;background:#0a0c10d1;z-index:100}.win-overlay p{font-size:22px;margin:0}.home{padding:24px 16px}.home h1{font-size:28px;margin:8px 4px 20px}.home-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.game-tile{position:relative;aspect-ratio:1;border-radius:18px;background:linear-gradient(150deg,#2a313d,#1d232d);color:#e6e9ef}.tile-open{position:absolute;top:0;right:0;bottom:0;left:0;border:none;background:none;color:inherit;border-radius:inherit;cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px}.tile-reset{position:absolute;bottom:10px;right:10px;z-index:1;background:#2a313d;color:#e6e9ef;border:1px solid #3a4150;border-radius:999px;padding:3px 10px;font-size:11px;cursor:pointer}.tile-emoji{font-size:44px}.tile-title{font-size:16px;font-weight:600}.tile-badge{position:absolute;top:10px;right:10px;font-size:11px;background:#3b82f6;padding:2px 8px;border-radius:999px}