.bmc-image{--primary:#2563eb;--primary-dark:#1d4ed8;--accent:#0d9488;--surface:#ffffff;--surface-muted:#f4f6fb;--border:#e2e8f0;--text-main:#0f172a;--text-muted:#64748b;--shadow-soft:0 20px 45px rgba(15,23,42,0.08);}
.icb-slab{margin-top:0.5rem;margin-bottom:2.5rem;}
.icb-mistakes{border:1px solid var(--border);border-radius:16px;padding:1.25rem 1.35rem;background:var(--surface-muted);margin-bottom:2rem;}
.icb-mistakes h2{font-size:1.35rem;font-weight:700;margin:0 0 0.75rem;line-height:1.25;}
.icb-mistakes ul{margin:0;padding-left:1.2rem;color:var(--text-main);}
.icb-mistakes li{margin-bottom:0.65rem;}
.icb-mistakes li:last-child{margin-bottom:0;}
.icb-panel{border:1px solid var(--border);border-radius:20px;background:var(--surface);box-shadow:var(--shadow-soft);overflow:hidden;}
.icb-drop{border:2px dashed color-mix(in srgb, var(--primary) 35%, var(--border));border-radius:16px;padding:1.75rem 1.25rem;text-align:center;background:linear-gradient(165deg, color-mix(in srgb, var(--primary) 6%, var(--surface)) 0%, var(--surface) 55%);cursor:pointer;transition:border-color 0.2s ease, background 0.2s ease;margin:1rem;}
.icb-drop:focus{outline:2px solid var(--primary);outline-offset:3px;}
.icb-drop.icb-drop--active{border-color:var(--primary);background:color-mix(in srgb, var(--primary) 10%, var(--surface));}
.icb-drop-icon{width:48px;height:48px;margin:0 auto 0.75rem;border-radius:12px;background:color-mix(in srgb, var(--primary) 18%, transparent);display:flex;align-items:center;justify-content:center;color:var(--primary);font-size:1.35rem;}
.icb-drop-title{font-weight:700;font-size:1.05rem;margin:0 0 0.35rem;}
.icb-drop-note{font-size:0.9rem;color:var(--text-muted);margin:0;}
.icb-workspace{display:none;flex-direction:column;gap:0;}
.icb-workspace.icb-workspace--open{display:flex;}
.icb-stage{padding:1rem 1rem 0;}
.icb-split-box{position:relative;width:100%;max-width:100%;margin:0 auto;border-radius:14px;overflow:hidden;background:var(--surface-muted);aspect-ratio:4/3;max-height:min(52vh, 420px);}
.icb-split-box canvas{display:block;width:100%;height:100%;object-fit:contain;}
.icb-canvas-balanced{position:absolute;left:0;top:0;width:100%;height:100%;pointer-events:none;clip-path:inset(0 0 0 50%);}
.icb-split-ctrl{padding:0.65rem 1rem 1rem;display:flex;flex-direction:column;gap:0.35rem;}
.icb-split-ctrl label{font-size:0.8rem;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:0.04em;}
.icb-split-ctrl input[type="range"]{width:100%;accent-color:var(--primary);}
.icb-toolbar{display:flex;flex-wrap:wrap;gap:0.5rem;padding:0 1rem 0.75rem;align-items:center;}
.icb-toolbar button,.icb-toolbar a.icb-btn{appearance:none;border:1px solid var(--border);background:var(--surface-muted);color:var(--text-main);font-weight:600;font-size:0.875rem;padding:0.55rem 1rem;border-radius:999px;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;gap:0.35rem;}
.icb-toolbar button:hover,.icb-toolbar a.icb-btn:hover{border-color:var(--primary);color:var(--primary);}
.icb-toolbar .icb-btn--primary{background:var(--primary);border-color:var(--primary);color:#fff;}
.icb-toolbar .icb-btn--primary:hover{filter:brightness(1.05);color:#fff;}
.icb-deck{padding:0 1rem 1.25rem;}
.icb-tone-nav{display:flex;gap:0.35rem;padding:0.25rem;background:var(--surface-muted);border-radius:999px;margin-bottom:1rem;overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none;}
.icb-tone-nav::-webkit-scrollbar{display:none;}
.icb-tone-nav button{flex:1;min-width:5.5rem;border:none;background:transparent;padding:0.55rem 0.75rem;border-radius:999px;font-weight:600;font-size:0.82rem;color:var(--text-muted);cursor:pointer;white-space:nowrap;}
.icb-tone-nav button.icb-tone--on{background:var(--surface);color:var(--text-main);box-shadow:0 1px 4px rgba(0,0,0,0.08);}
.icb-rails{display:none;flex-direction:column;gap:1rem;}
.icb-rails.icb-rails--on{display:flex;}
.icb-rail-label{display:flex;justify-content:space-between;align-items:baseline;font-size:0.8rem;font-weight:600;margin-bottom:0.35rem;color:var(--text-main);}
.icb-rail-label span:last-child{font-variant-numeric:tabular-nums;color:var(--text-muted);font-weight:600;}
.icb-rail-track{position:relative;height:12px;border-radius:999px;background:var(--border);overflow:hidden;}
.icb-rail-track input[type="range"]{position:absolute;left:0;top:50%;transform:translateY(-50%);width:100%;height:28px;margin:0;opacity:0;cursor:pointer;z-index:2;}
.icb-rail-fill{position:absolute;left:0;top:0;bottom:0;width:50%;border-radius:999px;pointer-events:none;opacity:0.85;}
.icb-rail--cr .icb-rail-fill{background:linear-gradient(90deg, #0891b2, #dc2626);}
.icb-rail--mg .icb-rail-fill{background:linear-gradient(90deg, #db2777, #16a34a);}
.icb-rail--yb .icb-rail-fill{background:linear-gradient(90deg, #ca8a04, #2563eb);}
.icb-footnote{font-size:0.8rem;color:var(--text-muted);padding:0 1rem 1.15rem;line-height:1.45;}
.icb-article{margin-top:2.75rem;padding-top:2rem;border-top:1px solid var(--border);}
.icb-article h2{font-size:1.35rem;font-weight:700;margin:0 0 0.85rem;line-height:1.25;}
.icb-article h3{font-size:1.05rem;font-weight:700;margin:1.5rem 0 0.5rem;}
.icb-article p{color:var(--text-main);line-height:1.65;margin:0 0 0.9rem;}
.icb-article p.icb-lead{font-size:1.05rem;}
.icb-callout{border-left:4px solid var(--accent);padding:0.85rem 1rem 0.85rem 1.1rem;background:var(--surface-muted);border-radius:0 12px 12px 0;margin:1.25rem 0;font-size:0.95rem;line-height:1.55;}
.icb-grid-2{display:grid;gap:1.25rem;}
@media (min-width: 768px){
.icb-grid-2{grid-template-columns:1fr 1fr;}
.icb-split-box{max-height:440px;}
}
.icb-dl{display:grid;gap:0.65rem;margin:1rem 0;}
.icb-dl div{padding:0.65rem 0;border-bottom:1px solid var(--border);}
.icb-dl strong{display:block;font-size:0.85rem;color:var(--text-muted);font-weight:600;margin-bottom:0.2rem;}
@media (min-width: 992px){
.icb-stage{padding:1.25rem 1.5rem 0;}
.icb-toolbar,.icb-deck,.icb-footnote{padding-left:1.5rem;padding-right:1.5rem;}
}