:root{--sky: #7cc8ff;--blue: #1f76d2;--deep-blue: #0f4fa8;--cream: #fff8e8;--panel-bg: #fffdf6;--tile-empty: #f5ddb0;--tile-grass: #79c84a;--tile-grass-dark: #4a9b2f;--rail: #7b5a3a;--rail-metal: #d7d7d7;--red: #e94b35;--green: #27b84a;--yellow: #ffc928;--text: #24324a;--card-radius: 24px;--card-shadow: 0 12px 24px rgba(0,0,0,.18);--card-border: 4px solid rgba(255,255,255,.8)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%}body{font-family:system-ui,-apple-system,BlinkMacSystemFont,Hiragino Sans,Noto Sans JP,sans-serif;font-weight:700;color:var(--text);background:linear-gradient(160deg,#a8d8ff,#7cc8ff,#b8e8b0 60%,#c8d8a0,#d8c890);background-attachment:fixed;min-height:100vh;overflow:hidden;-webkit-tap-highlight-color:transparent;touch-action:manipulation}.game-shell{max-width:1600px;margin:0 auto;padding:12px 18px 16px;height:100vh;height:100dvh;display:grid;grid-template-columns:220px 1fr;grid-template-rows:auto 1fr 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span{font-size:9px}.icon-btn:hover{background:#ffffff59;transform:scale(1.08)}.icon-btn:active{transform:scale(.95)}.main-layout{grid-area:board;display:flex;gap:12px;min-height:0;overflow:hidden}.panel-palette{grid-area:palette;padding:14px;display:flex;flex-direction:column;gap:10px;overflow-y:auto}.palette-heading{background:linear-gradient(90deg,var(--blue),var(--deep-blue));color:#fff;border-radius:12px;padding:6px 14px;font-size:14px;font-weight:900;text-align:center;letter-spacing:1px;flex-shrink:0}.palette-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}.panel-card{position:relative;background:var(--cream);border-radius:14px;border:3px solid rgba(255,255,255,.9);box-shadow:0 4px 10px #0000001f;padding:8px 6px 6px;display:flex;flex-direction:column;align-items:center;gap:4px;cursor:grab;transition:transform .15s,box-shadow .15s,background .15s,border-color 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8px;flex-direction:row;align-items:center;gap:6px;overflow-x:auto;overflow-y:hidden;border-radius:12px;border-width:2px;flex-shrink:0;max-height:none;-webkit-overflow-scrolling:touch;scrollbar-width:none}.panel-palette::-webkit-scrollbar{display:none}.palette-heading{font-size:10px;padding:3px 8px;border-radius:8px;white-space:nowrap;flex-shrink:0}.palette-total-counter{flex-direction:row;gap:6px;padding:4px 10px;border-radius:10px;margin-bottom:0;flex-shrink:0;border-width:1.5px}.counter-label{font-size:8px;white-space:nowrap}.counter-value{gap:2px}.current-val{font-size:16px}.slash,.total-val{font-size:12px}.unit{font-size:8px}.palette-grid{display:flex;flex-direction:row;gap:5px;flex-shrink:0}.panel-card{padding:4px 4px 3px;border-width:2px;border-radius:10px;flex-direction:column;align-items:center;gap:1px;min-width:54px}.panel-preview{width:36px;height:36px;border-width:1.5px;border-radius:7px}.panel-label{font-size:8px;white-space:nowrap}.palette-divider{border:none;border-left:2px dashed #ddd;margin:0 2px;height:36px;flex-shrink:0}.eraser-card{padding:4px 8px;border-radius:10px;flex-shrink:0;gap:3px;flex-direction:column;align-items:center;min-width:46px}.eraser-icon{font-size:18px}.eraser-label{font-size:8px}.board-wrapper{padding:2px;grid-column:1;grid-row:1}.board-frame{padding:4px;border-radius:12px;border-width:2px;box-shadow:0 6px 16px #00000026}.row-label{width:16px;font-size:10px}.col-label{font-size:10px}.board-header-row{padding-left:16px;margin-bottom:1px}.train-overlay{transform:translate(calc(16px + var(--train-col, 0) * var(--tile-size)),calc(var(--train-row, 0) * var(--tile-size)))}.tile{border-width:1.5px}.control-bar{grid-area:controls;flex-direction:column;gap:4px;justify-content:center;align-items:stretch}.ctrl-btn{min-height:0;max-width:none;width:44px;padding:6px 2px;font-size:9px;border-width:2px;border-radius:10px;gap:2px;flex-direction:column;text-shadow:0 1px 2px rgba(0,0,0,.3);box-shadow:0 4px 10px #00000026,inset 0 1px #ffffff4d}.ctrl-btn-icon{font-size:1.1em}.modal-card{padding:18px 24px 16px;border-radius:20px;border-width:3px;max-width:300px}.modal-icon{font-size:40px}.modal-card h2{font-size:22px;margin-bottom:6px}.modal-card p{font-size:13px;margin-bottom:10px}.modal-btn{font-size:14px;padding:8px 20px;border-width:3px;border-radius:14px}.fail-toast{top:10px;padding:8px 16px;font-size:13px;border-width:2px;border-radius:12px}}@media (max-height: 400px) and (max-width: 900px){.game-shell{padding:2px 4px;gap:2px}.header{height:30px;border-radius:10px;padding:0 8px;gap:4px}.header-train-icon{width:20px;height:20px;font-size:11px}.header-title-text{font-size:11px}.stage-arrow-btn{width:20px;height:20px;font-size:9px}.header-stage{padding:1px 6px;border-radius:8px}.stage-label{font-size:7px}.stage-number{font-size:10px}.icon-btn{width:22px;height:22px;font-size:9px}.board-frame{padding:3px}.panel-palette{padding:2px 6px;gap:4px;border-radius:8px}.panel-card{padding:2px 2px 1px;min-width:44px;border-radius:8px}.panel-preview{width:28px;height:28px;border-radius:6px}.panel-label{font-size:7px}.palette-heading{font-size:8px;padding:2px 6px;border-radius:6px}.palette-total-counter{padding:2px 6px;border-radius:8px}.current-val{font-size:13px}.slash,.total-val{font-size:10px}.eraser-card{padding:2px 4px;min-width:38px;border-radius:8px}.eraser-icon{font-size:14px}.eraser-label{font-size:7px}.ctrl-btn{width:36px;font-size:8px;padding:4px 1px;border-radius:8px;gap:1px}}@media (orientation: portrait){body{overflow:hidden}.game-shell>*:not(.rotate-prompt){display:none!important}.rotate-prompt{display:flex!important}}