:root{--bg: #0e0f12;--surface: #16181d;--surface-raised: #1d2027;--line: #2a2e37;--text: #efe6cf;--muted: #9a958a;--red: #c4202a;--red-bright: #e03341;--green: #168a3e;--ok: #3cff9e;--review: #ffb020;--focus: #ffcf3f;--info: #5cc8ff;--radius: 10px;--radius-sm: 6px;--font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;--font-score: "Barlow Condensed", "Arial Narrow", system-ui, sans-serif;--duration: .15s;--stage-max-height: 72dvh;color-scheme:dark}*{box-sizing:border-box}html,body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font-body);font-size:15px;line-height:1.45;-webkit-font-smoothing:antialiased}body{background:radial-gradient(1200px 600px at 85% -10%,rgba(196,32,42,.12),transparent 60%),radial-gradient(900px 500px at -10% 110%,rgba(22,138,62,.1),transparent 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14px;min-height:40px;cursor:pointer;transition:background var(--duration),border-color var(--duration),transform var(--duration)}.btn:hover:not(:disabled){border-color:#3d424e;background:#252933}.btn:active:not(:disabled){transform:translateY(1px) scale(.98)}.btn:disabled{opacity:.4;cursor:not-allowed}.btn-primary{background:var(--red);border-color:var(--red);color:#fff8ea}.btn-primary:hover:not(:disabled){background:var(--red-bright);border-color:var(--red-bright)}.btn-ghost{background:transparent}.btn-danger{background:#c4202a33;border-color:var(--red)}.btn-icon{width:44px;height:44px;padding:0;font-size:.9rem}.btn-chip{min-height:34px;padding:5px 11px;border-radius:999px;font-family:var(--font-score);font-size:1rem;letter-spacing:.02em}.btn-chip.is-active{border-color:var(--focus);color:var(--focus)}.zoom-control{display:flex;flex-direction:column;gap:8px}.zoom-control label{font-weight:600}.zoom-presets{display:flex;gap:6px;flex-wrap:wrap}.zoom-control 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strong{display:block;font-size:.9rem}.setup-checklist span{color:var(--muted);font-size:.82rem}.check-icon{flex:none;width:22px;height:22px;fill:none;stroke:var(--focus);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}@media (max-width: 560px){.placement,.setup-checklist{grid-template-columns:minmax(0,1fr)}.placement-side svg{max-width:210px;margin:0 auto}.light-grid{gap:8px}.light-grid .guide-card figcaption{font-size:.8rem}}@media (prefers-reduced-motion: reduce){.carousel-track,.carousel-dot:before{transition:none}.guide-loading{animation:none}}.point-list{list-style:none;margin:0;padding:0;display:grid;gap:6px}.point-btn{width:100%;display:grid;grid-template-columns:1fr auto;grid-template-areas:"label residual" "hint hint";gap:2px 10px;text-align:left;font:inherit;color:var(--text);background:var(--surface-raised);border:1px solid var(--line);border-radius:var(--radius-sm);padding:8px 12px;cursor:pointer;transition:border-color var(--duration),background 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var(--duration)}button.slot:hover{border-color:#3d424e}.slot.needs-review{border-color:var(--review);box-shadow:inset 0 0 0 1px #ffb02059}.slot.is-selected{border-color:var(--focus);transform:translateY(-2px)}.slot-empty{color:var(--muted);min-height:74px;justify-content:center;cursor:default}.slot-label{font:700 2rem/1.1 var(--font-score)}.slot-value{color:var(--muted);font-variant-numeric:tabular-nums}.board-svg{width:100%;max-width:420px;align-self:center;cursor:crosshair;filter:drop-shadow(0 10px 30px rgba(0,0,0,.5))}.board-numbers text{fill:var(--text);font:700 22px var(--font-score);pointer-events:none}.dart-marker{cursor:pointer}.dart-hit{fill:transparent}.dart-dot{fill:var(--ok);stroke:#000;stroke-width:1.5}.dart-marker.needs-review .dart-dot{fill:var(--review)}.dart-marker.is-fallen .dart-dot{fill:transparent;stroke:var(--muted);stroke-dasharray:2 2}.slot.is-fallen .slot-label{color:var(--muted);text-decoration:line-through}.dart-marker.is-selected .dart-dot{stroke:#fff;stroke-width:2.5}.dart-index{fill:#fff;font:700 13px var(--font-body);paint-order:stroke;stroke:#000;stroke-width:3px;pointer-events:none}.truth-marker{fill:none;stroke:var(--info);stroke-width:1.2;stroke-dasharray:2 2;pointer-events:none}.wrap{flex-wrap:wrap}.history ol{list-style:none;margin:0;padding:0;display:grid;gap:6px}.history li{display:grid;grid-template-columns:auto 1fr auto;gap:10px;align-items:baseline;font-variant-numeric:tabular-nums}.history strong{font:700 1.3rem var(--font-score)}.log summary{cursor:pointer;font-weight:600;color:var(--muted)}.log ol{list-style:none;margin:0;padding:0;display:grid;gap:4px;max-height:260px;overflow-y:auto;font-size:.82rem}.log time{color:var(--muted);font-variant-numeric:tabular-nums;margin-right:6px}.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(110px,1fr));gap:8px;margin:0}.stats div{background:var(--surface-raised);border-radius:var(--radius-sm);padding:8px 10px}.stats dt{color:var(--muted);font-size:.75rem;text-transform:uppercase;letter-spacing:.06em}.stats dd{margin:0;font:700 1.35rem var(--font-score);font-variant-numeric:tabular-nums}.focus-status{border-top:1px solid var(--line);padding-top:10px}.focus-locked:before{content:"● ";color:var(--ok)}.focus-unsupported:before{content:"● ";color:var(--review)}