:root{--bg: #0b1020;--bg-2: #131a33;--panel: #1a2247;--line: #2a356b;--text: #e6eaff;--text-dim: #8b95c9;--accent: #22d3ee;--danger: #ef4444;--safe-top: env(safe-area-inset-top, 0px);--safe-bottom: env(safe-area-inset-bottom, 0px)}*{box-sizing:border-box}html,body,#root{margin:0;padding:0;height:100%;background:var(--bg);color:var(--text);font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Noto Sans TC,Microsoft JhengHei,sans-serif;-webkit-tap-highlight-color:transparent;overscroll-behavior:none;user-select:none;-webkit-user-select:none}body{overflow:hidden}button{font:inherit;color:var(--text);background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:8px 14px;cursor:pointer;transition:background .15s,transform .05s}button:hover{background:#232c5e}button:active{transform:translateY(1px)}button:disabled{opacity:.5;cursor:not-allowed}.app{height:100dvh;display:flex;flex-direction:column;padding:var(--safe-top) 0 var(--safe-bottom)}.app-header{display:flex;align-items:center;justify-content:center;gap:10px;padding:5px 10px;border-bottom:1px solid var(--line);background:linear-gradient(180deg,var(--bg-2),var(--bg))}.app-header h1{font-size:14px;margin:0;letter-spacing:1px;flex:1;text-align:center}#hfpc-feedback-home.hfpc-fb{margin:4px auto 6px;text-align:center;max-width:100%}#hfpc-feedback-home .hf-fold{display:inline-block}.feedback-anchor:empty{display:none}.feedback-anchor{margin-top:10px;text-align:left}.header-btn{padding:6px 10px;font-size:13px;min-height:44px;min-width:44px;flex:0 0 auto;white-space:nowrap}.score-cell.best-live,.score-cell.best-live .label{color:var(--accent)}.new-best{color:var(--accent);font-weight:700;font-size:16px;margin:2px 0 6px}.record-list{margin:8px 0;padding:8px 10px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px 14px;background:#00000038;border:1px solid var(--line);border-radius:8px;font-size:12px}.record-list>div{display:flex;justify-content:space-between;gap:8px;min-width:0}.record-list dt{color:var(--text-dim);margin:0}.record-list dd{margin:0;font-variant-numeric:tabular-nums}.segmented.mode-options{flex-wrap:wrap}.wide-btn{width:100%;min-height:40px}.hud-stack{grid-column:1 / -1;grid-row:1;display:flex;flex-direction:column;gap:2px;min-width:0}.challenge-bar{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:4px 10px;font-size:11.5px;padding:1px 0;min-width:0}.challenge-tag{color:var(--accent);font-weight:700}.challenge-best{color:var(--text-dim);font-variant-numeric:tabular-nums}.mini-hint{font-size:9.5px;line-height:1.2;text-align:center;color:var(--text-dim);opacity:.75;padding:2px 0 1px;pointer-events:none}.next-head{display:flex;flex-direction:column}.next-head canvas{width:100%}.about-field #settingsVer{font-variant-numeric:tabular-nums}.segmented.mode-options button{flex:1 1 auto;min-width:84px}.toggle.active{background:var(--accent);border-color:var(--accent);color:#07111f;font-weight:700}.layout{position:relative;flex:1;display:grid;grid-template-columns:52px minmax(0,1fr) 52px;grid-template-rows:auto minmax(0,1fr) auto auto;gap:6px;padding:6px;min-height:0;overflow:hidden}.side-controls{display:flex;flex-direction:row;gap:6px;min-width:0;grid-column:1 / -1;grid-row:3}.side-controls-left{justify-self:start;width:calc(50% - 4px);justify-content:flex-start}.side-controls-right{justify-self:end;width:calc(50% - 4px);justify-content:flex-end}.side-controls button{min-width:0;min-height:44px;padding:7px 8px;white-space:normal;line-height:1.15}@media (min-width: 900px) and (orientation: landscape){.layout{grid-template-columns:minmax(130px,170px) minmax(0,1fr) minmax(140px,190px);grid-template-rows:auto minmax(0,1fr) auto;gap:16px;padding:16px}.hud-stack{grid-column:1 / -1;grid-row:1}.panel-left{grid-column:1;grid-row:2}.side-controls-left{grid-column:1 / 2;grid-row:3;width:auto}.stage{grid-column:2;grid-row:2}.side-controls-right{grid-column:3 / 4;grid-row:3;width:auto}.panel-right{grid-column:3;grid-row:2}.touch-pad{display:none!important}}@media (max-width: 560px){.hint-long{display:none}.mini-hint{font-size:12px;opacity:.9}.score-grid{grid-template-columns:repeat(2,minmax(0,1fr));width:100%}.side-controls{gap:5px}.side-controls button{flex:1 1 0;padding:7px 6px;font-size:12px}}.stage{position:relative;grid-column:2;grid-row:2;display:flex;align-items:center;justify-content:center;min-height:0;min-width:0;overflow:hidden}.board-canvas{background:#07091a;border:1px solid var(--line);border-radius:6px;image-rendering:pixelated;touch-action:none;display:block;max-width:100%;max-height:100%;box-shadow:0 0 0 1px #ffffff08,0 8px 30px #0009}.mouse-drag-enabled .board-canvas{cursor:grab}.mouse-drag-enabled .board-canvas:active{cursor:grabbing}.panel-left,.panel-right{display:flex;flex-direction:column;align-items:stretch;gap:8px;min-width:0;min-height:0;overflow:visible}.panel-left{grid-column:1;grid-row:2}.panel-right{grid-column:3;grid-row:2}@media (min-width: 900px) and (orientation: landscape){.panel-left,.panel-right{flex-direction:column}}.mini{background:var(--panel);border:1px solid var(--line);border-radius:6px;padding:4px;min-width:0;min-height:0;overflow:hidden}.mini-title{font-size:10px;letter-spacing:.8px;color:var(--text-dim);text-transform:uppercase;margin-bottom:4px}.mini canvas{display:block;width:100%;height:auto}.panel-left .mini,.panel-right .mini{flex:0 0 auto!important}.draggable-mini{cursor:grab;touch-action:none}.draggable-mini:active{cursor:grabbing}.score-grid{display:grid;grid-template-columns:repeat(4,max-content);justify-content:center;flex-wrap:wrap;gap:4px;min-width:0}.score-cell{background:var(--panel);border:1px solid var(--line);border-radius:6px;padding:3px 5px;min-width:42px;width:max-content;text-align:center}.score-cell .label{color:var(--text-dim);font-size:8px;letter-spacing:.5px;text-transform:uppercase}.score-cell .value{font-size:14px;font-weight:700;font-variant-numeric:tabular-nums}.touch-pad{grid-column:1 / -1;grid-row:4;display:grid;grid-template-columns:repeat(5,1fr);gap:5px;padding:5px;border-top:1px solid var(--line);background:var(--bg-2)}.touch-pad button{padding:12px 0;min-height:44px;font-size:14px}@media (min-width: 900px) and (orientation: landscape){.mini{padding:8px}.panel-right .mini canvas{aspect-ratio:1 / 2.6!important;height:auto}}.overlay{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;background:#07091ac7;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:10}.overlay .panel{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:22px 26px;text-align:center;min-width:240px}.overlay h2{margin:0 0 6px;font-size:22px}.overlay p{margin:4px 0 14px;color:var(--text-dim);font-size:13px}.overlay .row{display:flex;gap:8px;justify-content:center}.settings{position:fixed;top:0;right:0;bottom:0;left:0;display:flex;align-items:flex-start;justify-content:center;padding:10px;overflow-y:auto;background:#07091adb;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);z-index:20}.settings .card{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:0 22px 22px;min-width:280px;max-width:360px;width:86%;max-height:calc(100dvh - 20px);overflow-y:auto;overscroll-behavior:contain}.settings-head{position:sticky;top:0;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:8px;margin:0 -22px 14px;padding:12px 22px;background:var(--panel);border-bottom:1px solid var(--line)}.settings-close{min-width:44px;min-height:44px;font-size:16px;line-height:1;flex:0 0 auto}.settings h2{margin:0;font-size:18px}.settings .field{margin-bottom:14px}.settings .field label{display:flex;justify-content:space-between;font-size:12px;color:var(--text-dim);margin-bottom:4px}.settings .field input[type=range]{width:100%;accent-color:var(--accent)}.settings .segmented{display:grid;grid-template-columns:repeat(3,1fr);gap:6px}.settings .segmented button{padding:8px 6px;border-radius:6px}.settings .segmented button.active{background:var(--accent);border-color:var(--accent);color:#07111f;font-weight:700}.settings .field-note{margin:6px 0 0;color:var(--text-dim);font-size:11px;line-height:1.4}.settings .actions{display:flex;gap:8px;justify-content:flex-end;margin-top:8px}.help{font-size:11px;color:var(--text-dim);line-height:1.5}.help kbd{background:#232c5e;border:1px solid var(--line);border-bottom-width:2px;border-radius:4px;padding:1px 5px;font-size:10px;font-family:ui-monospace,monospace}.toast{position:absolute;top:16px;left:50%;transform:translate(-50%);background:#22d3eee6;color:#07091a;font-weight:700;padding:6px 14px;border-radius:999px;pointer-events:none;z-index:30;animation:pop .8s ease-out forwards}.floating-piece{position:fixed;z-index:40;pointer-events:none;transform:translate(-50%,-50%);filter:drop-shadow(0 12px 20px rgba(0,0,0,.45))}.floating-piece-cell{position:absolute;border:1px solid rgba(7,9,26,.7);box-shadow:inset 2px 2px #ffffff2e,inset -2px -2px #00000047}@keyframes pop{0%{opacity:0;transform:translate(-50%,-8px) scale(.9)}20%{opacity:1;transform:translate(-50%) scale(1)}80%{opacity:1}to{opacity:0;transform:translate(-50%,-8px)}}.app-subtitle{display:block;font-size:10px;letter-spacing:2px;font-weight:400;color:var(--text-dim);margin-top:2px}.undo-btn:disabled{opacity:.4}.puzzle-bar .link-btn{min-height:32px;padding:4px 10px;margin-left:6px;font-size:12px}.settings .skin-options{grid-template-columns:repeat(2,1fr)}.settings .puzzle-options button:disabled{opacity:.4}.draggable-mini{min-width:44px}@media (orientation: portrait){.touch-pad{margin-bottom:18px}#appVerBadge{bottom:2px!important}}@media (orientation: landscape) and (max-height: 500px){.app{position:relative}.hfpc-fb-home{display:none!important}.app-header{position:absolute;top:var(--safe-top, 0px);left:0;z-index:30;width:auto;gap:6px;padding:2px 6px;border-bottom:0;background:transparent}.app-header h1,.app-subtitle{display:none}.hud-stack{position:absolute;top:2px;right:6px;z-index:30;width:min(260px,34vw)}.layout{grid-template-rows:0px minmax(0,1fr) auto auto}#appVerBadge{top:6px!important;bottom:auto!important;left:50%!important;right:auto!important;transform:translate(-50%)}}