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.piece-body{transform-box:fill-box;transform-origin:50%;transition:transform .12s cubic-bezier(.25,.8,.25,1)}.board .piece.dragging{will-change:transform}.board .piece-body.dying{animation:.18s ease-in forwards capture-out}.board .piece.dragging{filter:drop-shadow(0 6px 6px #00000040)}@keyframes capture-out{to{opacity:0;transform:scale(.55)}}.board .piece-shadow{fill:#00000040}.board .pw{stroke:var(--piece-white-edge);stroke-width:2.5px}.board .pb{stroke:var(--piece-black-edge);stroke-width:2.5px}.board .ring-w{stroke:#0000001a;stroke-width:3px}.board .ring-b{stroke:#ffffff17;stroke-width:3px}.board .crown-w{fill:#b38b2e;stroke:#8c6a1f;stroke-width:2px;stroke-linejoin:round}.board .crown-b{fill:#e3c46e;stroke:#b8973e;stroke-width:2px;stroke-linejoin:round}.board .target{fill:color-mix(in srgb, var(--accent) 22%, transparent);stroke:color-mix(in srgb, var(--accent) 45%, transparent);stroke-width:2px;pointer-events:none;transition:fill 90ms,stroke 90ms}.board 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;--lightningcss-dark:initial;color-scheme:dark}:root[data-board=green]{--sq-light:#e6e9d8;--sq-dark:#5f7a55}:root[data-board=blue]{--sq-light:#dfe6ee;--sq-dark:#4f6a86}*{box-sizing:border-box}html,body,#root{height:100%}body{background:var(--bg);color:var(--text);font-family:var(--font);font-feature-settings:"cv11", "ss01";-webkit-font-smoothing:antialiased;margin:0;line-height:1.45}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}h1,h2,h3{letter-spacing:-.01em;margin:0 0 .5em;line-height:1.2}h1{font-size:1.6rem}h2{font-size:1.15rem}.num{font-variant-numeric:tabular-nums}.display{font-family:var(--font-display);font-variant-numeric:tabular-nums;letter-spacing:-.02em;font-weight:600}.muted{color:var(--muted)}.small{font-size:.85rem}.err{color:var(--error)}.ok{color:var(--success)}.app{flex-direction:column;min-height:100%;display:flex}.topbar{background:var(--surface);box-shadow:0 1px 0 var(--line);z-index:20;align-items:center;gap:4px;padding:10px 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button.on{background:var(--surface);color:var(--text);box-shadow:var(--shadow)}.train{flex-direction:column;align-items:center;gap:12px;padding:16px 16px 40px;display:flex}.train-col{flex-direction:column;gap:10px;width:min(640px,100%,100vh - 210px);min-width:min(320px,100%);display:flex}.toolbar{align-items:center;gap:8px;min-height:40px;display:flex}.toolbar .title{font-weight:600}.toolbar select{width:auto;padding:6px 8px}.banner{background:var(--surface);border-radius:var(--radius-btn);text-align:center;box-shadow:var(--shadow);padding:8px 12px;font-weight:600}.strip{color:var(--muted);justify-content:center;align-items:center;gap:10px;font-size:.9rem;display:flex}.strip .dots{gap:5px;display:flex}.strip .dot{background:var(--surface-2);width:9px;height:9px;box-shadow:inset 0 0 0 1px var(--line);border-radius:50%}.strip .dot.done{background:var(--accent);box-shadow:none}.strip .dot.now{background:var(--accent-soft)}.result{background:var(--surface);border-radius:var(--radius-card);box-shadow:var(--shadow);padding:16px 18px}.result .head{align-items:baseline;gap:10px;display:flex}.result .head .mark{font-size:1.3rem}.result .head .what{font-size:1.2rem;font-weight:700}.result .delta{margin-left:auto;font-size:1.3rem}.result .sub{color:var(--muted);flex-wrap:wrap;justify-content:space-between;gap:8px;margin-top:2px;display:flex}.result .feedback{margin:10px 0 12px}.result .actions{flex-wrap:wrap;gap:8px;display:flex}.result .actions .primary{margin-left:auto}.badge{background:color-mix(in srgb, var(--accent) 14%, transparent);color:var(--accent);border-radius:999px;align-items:center;gap:6px;margin:0 6px 6px 0;padding:3px 10px;font-size:.85rem;font-weight:600;display:inline-flex}.reveal{text-align:center;padding:8px 0}.reveal .display{color:var(--accent);font-size:3.2rem}.diagrams{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:14px;display:grid}.diagram-card{background:var(--surface);border-radius:var(--radius-card);box-shadow:var(--shadow);color:var(--text);flex-direction:column;gap:6px;padding:8px;display:flex}.diagram-card:hover{text-decoration:none;transform:translateY(-1px)}.modules{grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:16px;display:grid}.module-card{color:var(--text);align-items:center;gap:12px;display:flex}.module-card:hover{text-decoration:none}.locked{opacity:.6}.progress{background:var(--surface-2);border-radius:3px;height:6px;overflow:hidden}.progress>div{background:var(--accent);border-radius:3px;height:100%}.overlay{z-index:50;background:#00000059;justify-content:center;align-items:center;padding:16px;display:flex;position:fixed;inset:0}.dialog{background:var(--surface);border-radius:var(--radius-card);box-shadow:var(--shadow);width:min(460px,100%);padding:20px}.chart-head{justify-content:space-between;align-items:center;margin-bottom:8px;display:flex}.seg 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