:root{--primary:#2563eb;--primary-dark:#1d4ed8;--accent:#0ea5e9;--surface:#ffffff;--surface-muted:#f4f5f7;--border:#e5e7eb;--text-main:#111827;--text-muted:#6b7280;--shadow-soft:0 4px 24px rgba(0,0,0,0.06);--spg-radius:18px;--spg-radius-sm:12px;--spg-chip-h:44px;--spg-accent-glow:color-mix(in srgb, var(--primary) 18%, transparent);}
.bmc-image{--primary:#2563eb;--primary-dark:#1d4ed8;--accent:#0ea5e9;--surface:#ffffff;--surface-muted:#f4f5f7;--border:#e5e7eb;--text-main:#111827;--text-muted:#6b7280;--shadow-soft:0 4px 24px rgba(0,0,0,0.06);}
.spg-lab{margin:0 0 2.5rem;padding:0;}
.spg-workspace{display:grid;grid-template-columns:1fr;gap:1rem;border:1px solid var(--border);border-radius:var(--spg-radius);background:var(--surface);box-shadow:var(--shadow-soft);padding:1rem;}
.spg-workspace-col{min-width:0;}
@media (min-width: 992px){
.spg-workspace{grid-template-columns:minmax(320px, 1fr) minmax(420px, 1.2fr);align-items:start;gap:1.25rem;}
}
.spg-stage-wrap{position:relative;border-radius:var(--spg-radius);overflow:hidden;border:1px solid var(--border);background:repeating-conic-gradient(#eceef2 0% 25%, #f6f7f9 0% 50%) 50% / 14px 14px;box-shadow:var(--shadow-soft);}
.spg-stage{aspect-ratio:1;width:100%;display:block;background:var(--surface);}
.spg-stage svg{display:block;width:100%;height:100%;}
.spg-badge{position:absolute;top:0.65rem;left:0.65rem;font-size:0.65rem;font-weight:700;letter-spacing:0.14em;text-transform:uppercase;padding:0.35rem 0.55rem;border-radius:999px;background:rgba(15,18,22,0.78);color:#f8fafc;backdrop-filter:blur(8px);}
.spg-dock{display:flex;flex-direction:column;gap:1rem;}
.spg-rail-label{font-size:0.72rem;font-weight:700;letter-spacing:0.08em;text-transform:uppercase;color:var(--text-muted);margin:0 0 0.35rem;}
.spg-rail{display:flex;flex-wrap:nowrap;gap:0.45rem;overflow-x:auto;padding-bottom:0.35rem;margin:0 -0.25rem;padding-left:0.25rem;padding-right:0.25rem;-webkit-overflow-scrolling:touch;scrollbar-width:thin;}
.spg-rail::-webkit-scrollbar{height:4px;}
.spg-rail::-webkit-scrollbar-thumb{background:color-mix(in srgb, var(--text-muted) 35%, transparent);border-radius:99px;}
.spg-chip{flex:0 0 auto;height:var(--spg-chip-h);padding:0 1rem;border-radius:999px;border:1px solid var(--border);background:var(--surface-muted);color:var(--text-muted);font-size:0.82rem;font-weight:600;cursor:pointer;transition:background 0.15s, border-color 0.15s, color 0.15s, box-shadow 0.15s;}
.spg-chip:hover{color:var(--text-main);border-color:color-mix(in srgb, var(--primary) 28%, var(--border));}
.spg-chip[aria-pressed="true"]{background:color-mix(in srgb, var(--primary) 12%, var(--surface));border-color:color-mix(in srgb, var(--primary) 45%, var(--border));color:var(--text-main);box-shadow:0 0 0 3px var(--spg-accent-glow);}
.spg-presets{display:flex;flex-wrap:wrap;gap:0.45rem;align-items:center;}
.spg-presets .spg-rail-label{flex:0 0 100%;margin-bottom:0;}
.spg-preset{padding:0.45rem 0.75rem;border-radius:var(--spg-radius-sm);border:1px dashed color-mix(in srgb, var(--text-muted) 40%, var(--border));background:var(--surface);color:var(--text-muted);font-size:0.78rem;font-weight:600;cursor:pointer;transition:border-color 0.15s, color 0.15s, background 0.15s;}
.spg-preset:hover{border-color:var(--primary);color:var(--text-main);background:color-mix(in srgb, var(--primary) 5%, var(--surface));}
.spg-panel{border-radius:var(--spg-radius);border:1px solid var(--border);background:var(--surface-muted);padding:1rem 1rem 1.1rem;}
.spg-row{display:flex;flex-direction:column;gap:0.4rem;margin-bottom:0.85rem;}
.spg-row:last-child{margin-bottom:0;}
.spg-row label{display:flex;justify-content:space-between;align-items:baseline;font-size:0.8rem;font-weight:600;color:var(--text-muted);margin:0;gap:0.5rem;}
.spg-row label output,.spg-row label span{color:var(--text-main);font-variant-numeric:tabular-nums;}
.spg-row input[type="range"]{width:100%;accent-color:var(--primary);}
.spg-colors{display:grid;grid-template-columns:1fr 1fr;gap:0.75rem;}
@media (min-width: 480px){
.spg-colors{grid-template-columns:1fr 1fr 1fr;}
}
.spg-color-field{display:flex;flex-direction:column;gap:0.35rem;}
.spg-color-field span{font-size:0.75rem;font-weight:600;color:var(--text-muted);}
.spg-swatch-wrap{display:flex;align-items:center;gap:0.5rem;}
.spg-swatch-wrap input[type="color"]{width:100%;height:42px;border:1px solid var(--border);border-radius:var(--spg-radius-sm);padding:2px;cursor:pointer;background:var(--surface-muted);}
.spg-actions{display:flex;flex-direction:column;gap:0.5rem;margin-top:0.25rem;}
@media (min-width: 576px){
.spg-actions{flex-direction:row;flex-wrap:wrap;}
}
.spg-btn{flex:1;min-width:0;display:inline-flex;align-items:center;justify-content:center;gap:0.45rem;padding:0.72rem 1rem;border-radius:var(--spg-radius-sm);font-size:0.88rem;font-weight:700;border:none;cursor:pointer;transition:transform 0.12s, box-shadow 0.15s, background 0.15s;}
.spg-btn:active{transform:scale(0.98);}
.spg-btn--primary{background:var(--primary);color:#fff;box-shadow:0 4px 14px color-mix(in srgb, var(--primary) 35%, transparent);}
.spg-btn--primary:hover{background:var(--primary-dark);}
.spg-btn--ghost{background:var(--surface-muted);color:var(--text-main);border:1px solid var(--border);}
.spg-btn--ghost:hover{border-color:color-mix(in srgb, var(--primary) 35%, var(--border));background:var(--surface);}
.spg-status{font-size:0.78rem;color:var(--text-muted);min-height:1.25rem;margin:0.35rem 0 0;text-align:center;}
.spg-trust{font-size:0.8rem;color:var(--text-muted);text-align:center;margin:0.75rem 0 0;line-height:1.45;}
.spg-prose{margin-top:2.5rem;padding-bottom:2rem;}
.spg-prose h2{font-size:clamp(1.25rem, 3vw, 1.55rem);font-weight:700;color:var(--text-main);margin:2rem 0 0.75rem;line-height:1.25;}
.spg-prose h2:first-child{margin-top:0;}
.spg-prose p{font-size:1rem;line-height:1.65;color:var(--text-main);margin:0 0 1rem;}
.spg-prose ul{margin:0 0 1rem;padding-left:1.2rem;color:var(--text-main);line-height:1.6;}
.spg-prose li{margin-bottom:0.4rem;}
.spg-prose a{color:var(--primary);font-weight:600;text-decoration:none;border-bottom:1px solid color-mix(in srgb, var(--primary) 35%, transparent);}
.spg-prose a:hover{border-bottom-color:var(--primary);}
.spg-callout{border-left:4px solid var(--primary);padding:0.85rem 1rem;margin:1.25rem 0;background:color-mix(in srgb, var(--primary) 6%, var(--surface-muted));border-radius:0 var(--spg-radius-sm) var(--spg-radius-sm) 0;font-size:0.95rem;line-height:1.6;color:var(--text-main);}
.spg-callout strong{color:var(--text-main);}
.spg-table-wrap{overflow-x:auto;margin:1rem 0;border:1px solid var(--border);border-radius:var(--spg-radius-sm);}
.spg-table{width:100%;border-collapse:collapse;font-size:0.88rem;}
.spg-table th,.spg-table td{padding:0.65rem 0.85rem;text-align:left;border-bottom:1px solid var(--border);}
.spg-table th{background:var(--surface-muted);font-weight:700;color:var(--text-main);}
.spg-table tr:last-child td{border-bottom:none;}
.spg-table td{color:var(--text-main);}