*{box-sizing:border-box}:root{--bg: #12121a;--panel: #1b1b28;--panel-2: #232335;--border: #32324a;--text: #eceef5;--text-dim: #9a9ab0;--accent: #7c8bff;--accent-2: #ffb454;--p1: #ff9f45;--p1-stroke: #b9670f;--p2: #3d8bfd;--p2-stroke: #1c4fa0;--move: #4ade80;--capture: #f87171;--swap: #60a5fa;--merge: #fb923c;--life: #4ade80;--danger: #f75c5c}html,body,#root{height:100%}body{margin:0;font-family:Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:radial-gradient(circle at 50% 0%,#1c1c2c 0%,var(--bg) 60%);color:var(--text)}button{font-family:inherit;cursor:pointer}input{font-family:inherit}.app-shell{min-height:100%;display:flex;flex-direction:column}.topbar{display:flex;align-items:center;justify-content:space-between;padding:10px 18px;background:#141420e6;border-bottom:1px solid 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button{border:none;background:var(--accent);color:#10101a;padding:0 16px;font-weight:700}.error-text{color:var(--capture);font-size:13px;margin-top:8px}.hint-text{color:var(--text-dim);font-size:12px;margin-top:8px}.back-link{background:none;border:none;color:var(--text-dim);font-size:13px;padding:0;margin-bottom:4px;text-align:left}.back-link:hover{color:var(--text)}.home-banner{text-align:center;font-size:13px;color:var(--text-dim);background:var(--panel-2);border:1px solid var(--border);border-radius:999px;padding:10px 16px;line-height:1.4}.icon-btn.small{width:28px;height:28px;font-size:13px;border-radius:6px}.tutorial-board-area{position:relative}.tutorial-board-frame{max-width:340px;margin:0 auto}.tutorial-bubble-wrap{position:relative;margin-top:16px;padding:14px 16px;background:var(--panel-2);border:1px solid var(--accent);border-radius:12px;cursor:pointer;transition:background .15s ease,transform .1s 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solid var(--border);border-radius:12px;background:var(--panel-2);color:var(--text);text-align:left;transition:border-color .15s ease,background .15s ease}.tutorial-row:hover{border-color:var(--accent);background:#202032}.tutorial-row-left{display:flex;align-items:center;gap:10px}.tutorial-icon{font-size:20px}.tutorial-check{font-size:12px;color:var(--move);font-weight:600}.chat-bubble-inline{margin-left:8px;font-size:12px;font-weight:400;color:var(--text-dim);background:var(--panel-2);border:1px solid var(--border);border-radius:999px;padding:2px 10px;max-width:220px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;vertical-align:middle}.chat-header-row{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;border-bottom:1px solid var(--border)}.draw-offer-card{margin-top:10px;padding-top:10px;border-top:1px solid var(--border)}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:100;display:flex;align-items:center;justify-content:center;padding:16px;background:#08080ea6;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px)}.modal-card{width:100%;max-width:340px}.square.flash-capture{animation:flashCapture .65s ease-out}.square.flash-merge{animation:flashMerge .65s ease-out}.square.flash-swap{animation:flashSwap .65s ease-out}@keyframes flashCapture{0%{box-shadow:inset 0 0 0 4px var(--capture);background-color:#f871718c}to{box-shadow:inset 0 0 0 0 var(--capture);background-color:transparent}}@keyframes flashMerge{0%{box-shadow:inset 0 0 0 4px var(--merge);background-color:#fb923c80}to{box-shadow:inset 0 0 0 0 var(--merge);background-color:transparent}}@keyframes flashSwap{0%,to{box-shadow:inset 0 0 0 4px var(--swap)}50%{box-shadow:inset 0 0 0 0 var(--swap)}}