:root{--bg: #0b1020;--bg-2: #121a31;--panel: #16203a;--panel-2: #1d2a49;--line: #2a3a5e;--text: #e6ecff;--muted: #8ba0c9;--gold: #d8b75a;--gold-soft: rgba(216, 183, 90, .18);--accent: #4c7dff;--danger: #ef4444;--ok: #22c55e}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:Segoe UI,Noto Sans TC,system-ui,-apple-system,sans-serif;font-size:14px}.app{max-width:1100px;margin:0 auto;padding:16px;display:flex;flex-direction:column;gap:12px;min-height:100%}.app-header{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.app-header h1{margin:0;font-size:22px;letter-spacing:2px;color:var(--gold);text-shadow:0 0 18px rgba(216,183,90,.25)}.header-actions{display:flex;gap:8px;flex-wrap:wrap}.tabs{display:flex;gap:6px;border-bottom:1px solid var(--line);flex-wrap:wrap}.tabs button{background:transparent;border:1px solid transparent;border-bottom:none;color:var(--muted);padding:9px 14px;border-radius:8px 8px 0 0;cursor:pointer;font-size:14px}.tabs button.on{color:var(--text);background:var(--panel);border-color:var(--line)}.tabs button.solve-tab.on{color:var(--gold)}.status-bar{font-size:13px;color:var(--muted);background:var(--bg-2);border:1px solid var(--line);border-radius:8px;padding:7px 12px}.status-bar .warn,.warn{color:var(--gold)}.app-main{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:16px;min-height:420px}.app-footer{display:flex;flex-direction:column;align-items:center;gap:2px;text-align:center;color:var(--muted);font-size:12px;padding:6px}.view-counter{color:var(--gold)}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0000009e;display:flex;align-items:center;justify-content:center;padding:20px;z-index:100}.modal{background:var(--panel);border:1px solid var(--line);border-radius:12px;max-width:640px;width:100%;max-height:86vh;display:flex;flex-direction:column;box-shadow:0 20px 60px 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12px;cursor:pointer;font-size:13px}button:hover{border-color:var(--accent)}button.primary{background:var(--accent);border-color:var(--accent);color:#fff}button.danger{background:var(--danger);border-color:var(--danger);color:#fff}button.ghost{background:transparent}button.x{background:transparent;border:none;color:var(--muted);padding:2px 6px}button.x:hover{color:var(--danger)}button.big-btn{padding:9px 22px;font-size:15px;font-weight:600}input,select{background:var(--bg-2);color:var(--text);border:1px solid var(--line);border-radius:6px;padding:5px 8px;font-size:13px}input[type=number]{width:64px}input[type=range]{width:160px;vertical-align:middle}label{display:inline-flex;align-items:center;gap:6px;color:var(--muted);font-size:13px}label.check{gap:5px}label.inline{color:var(--text)}label.grow{flex:1}.file-label{display:inline-flex;align-items:center}.toolbar{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:10px}.toolbar.wrap{row-gap:8px}.muted{color:var(--muted)}.muted.small,.small{font-size:12px}.hint{color:var(--muted);font-size:12.5px;line-height:1.5;margin:8px 0}.error{color:var(--danger)}.seg{display:inline-flex;border:1px solid var(--line);border-radius:8px;overflow:hidden}.seg button{border:none;border-radius:0}.seg button.on{background:var(--accent);color:#fff}.grid-board{display:grid;gap:0;background:var(--bg);border:2px solid var(--gold);border-radius:6px;padding:4px;width:max-content;-webkit-user-select:none;user-select:none}.board-cell{border:1px solid rgba(255,255,255,.07);background:#0e1730;cursor:pointer}.board-cell.on{background:var(--gold-soft);border-color:#d8b75a80;box-shadow:inset 0 0 0 1px #d8b75a59}.board-cell.empty{background:#0e1730;cursor:default}.board-cell.filled{cursor:default}.grid-board.solution{border-color:var(--line)}.image-toggle{margin-top:12px}.shape-grid{display:grid;gap:2px;width:max-content}.sg-cell{background:#0e1730;border:1px solid rgba(255,255,255,.07);border-radius:3px}.sg-cell.editable{cursor:pointer}.sg-cell.editable:hover{border-color:var(--accent)}.piece-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}.piece-card{background:var(--bg-2);border:1px solid var(--line);border-radius:10px;padding:12px;display:flex;flex-direction:column;gap:10px}.piece-card-head{display:flex;align-items:center;gap:8px}.piece-card-head 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var(--line);border-radius:6px;overflow:hidden;cursor:crosshair;margin:8px 0}.img-wrap img{display:block}.sel-rect{position:absolute;border:2px dashed var(--gold);background:#d8b75a14;pointer-events:none}.preview-grid{position:absolute;display:grid;pointer-events:none}.pv-cell{border:1px solid rgba(255,255,255,.08)}.pv-cell.on{background:#d8b75a80}.solving{color:var(--gold);padding:14px 0;font-size:15px}.error-box{background:#ef44441f;border:1px solid var(--danger);border-radius:8px;padding:12px;margin-top:10px}.warn-box{background:var(--gold-soft);border:1px solid var(--gold);border-radius:8px;padding:10px;margin-bottom:10px;font-size:13px}.solution-view{display:flex;gap:20px;flex-wrap:wrap;align-items:flex-start;margin-top:12px}.solution-info{display:flex;flex-direction:column;gap:10px;min-width:240px;flex:1}.stat-line{font-size:15px}.stat-line .big{font-size:30px;font-weight:700;color:var(--gold)}.bonus-status{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:4px}.bonus-status li{font-size:13px}.bonus-status .mark{display:inline-block;width:18px}.bonus-status li.ok{color:var(--text)}.bonus-status li.ok .mark{color:var(--ok)}.bonus-status li.no{color:var(--muted)}.bonus-status li.no .mark{color:var(--danger)}.bonus-status .b{color:var(--gold)}.piece-summary{display:flex;flex-wrap:wrap;gap:6px;align-items:center}.chip{display:inline-flex;align-items:center;gap:6px;background:var(--bg-2);border:1px solid var(--line);border-radius:20px;padding:3px 10px;font-size:12.5px}.tag.rare{color:#f59e0b}.fixed-editor{display:flex;flex-direction:column;gap:10px}.fixed-picker{display:flex;flex-wrap:wrap;gap:8px}.piece-pick{display:flex;flex-direction:column;align-items:center;gap:4px;background:var(--bg-2);border:1px solid 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10px;font-size:12px}.sol-chip.on{background:var(--accent);border-color:var(--accent);color:#fff}.sol-chip .sol-meta{font-size:10.5px;opacity:.85}