.bmc-image{--primary:#2563eb;--primary-dark:#1d4ed8;--surface:#ffffff;--surface-muted:#f4f6fb;--border:#e2e8f0;--text-main:#0f172a;--text-muted:#64748b;--shadow-soft:0 20px 45px rgba(15,23,42,0.08);}
.tool-hero{display:flex;flex-wrap:wrap;gap:32px;align-items:flex-start;margin-bottom:1rem;}
.hero-text{flex:1;min-width:260px;}
.hero-text h1{font-size:40px;font-weight:700;line-height:1.2;margin-bottom:0;}
.hero-subtitle{font-size:18px;color:var(--text-muted);max-width:640px;margin-bottom:1rem;margin-top:0;}
@media (max-width:767px){.hero-text h1{font-size:clamp(1.75rem,5vw,2.5rem);}.hero-subtitle{font-size:clamp(1rem,3vw,1.125rem);}}
.ibf-tool{margin-bottom:2.5rem;}
.ibf-surface{background:var(--surface);border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow-soft);overflow:hidden;}
.ibf-control-strip{display:flex;flex-wrap:wrap;gap:12px;align-items:stretch;padding:14px 16px;background:var(--surface-muted);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:4;}
.ibf-segments{display:flex;flex-wrap:wrap;gap:6px;flex:1;min-width:min(100%,280px);}
.ibf-seg{position:absolute;opacity:0;width:0;height:0;pointer-events:none;}
.ibf-seg-label{display:inline-flex;align-items:center;justify-content:center;padding:10px 14px;border-radius:10px;font-size:13px;font-weight:600;color:var(--text-muted);background:transparent;border:1px solid transparent;cursor:pointer;transition:background .15s ease,color .15s ease,border-color .15s ease;white-space:nowrap;}
.ibf-seg:focus-visible + .ibf-seg-label{outline:2px solid var(--primary);outline-offset:2px;}
.ibf-seg:checked + .ibf-seg-label{color:var(--text-main);background:var(--surface);border-color:var(--border);box-shadow:0 1px 3px rgba(0,0,0,.06);}
.ibf-slider-block{flex:1;min-width:160px;max-width:100%;}
.ibf-slider-block label{display:flex;justify-content:space-between;align-items:center;font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.04em;color:var(--text-muted);margin-bottom:6px;}
.ibf-slider-block output,.ibf-slider-block .ibf-val{font-variant-numeric:tabular-nums;color:var(--text-main);font-weight:700;}
.ibf-range{width:100%;height:6px;border-radius:99px;background:var(--border);appearance:none;cursor:pointer;}
.ibf-range::-webkit-slider-thumb{appearance:none;width:18px;height:18px;border-radius:50%;background:var(--primary);border:2px solid var(--surface);box-shadow:0 1px 4px rgba(0,0,0,.12);}
.ibf-range::-moz-range-thumb{width:18px;height:18px;border-radius:50%;background:var(--primary);border:2px solid var(--surface);}
.ibf-motion-wrap{display:none;flex:1;min-width:160px;max-width:100%;}
.ibf-motion-wrap.ibf-motion-on{display:block;}
.ibf-replace{display:none;align-items:center;justify-content:center;gap:8px;padding:12px 18px;border-radius:12px;font-weight:600;font-size:14px;border:1px solid var(--border);background:var(--surface);color:var(--text-main);cursor:pointer;transition:background .15s ease,border-color .15s ease,transform .15s ease;align-self:center;}
.ibf-replace:not([hidden]){display:inline-flex;}
.ibf-replace:hover{border-color:var(--primary);color:var(--primary);}
.ibf-dl{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 20px;border-radius:12px;font-weight:600;font-size:14px;border:none;background:var(--primary);color:#fff;cursor:pointer;transition:opacity .15s ease,transform .15s ease;align-self:center;}
.ibf-dl:disabled{opacity:.45;cursor:not-allowed;transform:none;}
.ibf-dl:not(:disabled):hover{opacity:.92;transform:translateY(-1px);}
.ibf-body{padding:18px 16px 22px;}
.ibf-drop{border:2px dashed var(--border);border-radius:14px;padding:clamp(28px,6vw,48px) 20px;text-align:center;background:linear-gradient(145deg,var(--surface-muted) 0%,var(--surface) 100%);cursor:pointer;transition:border-color .2s ease,background .2s ease;}
.ibf-drop:hover,.ibf-drop.ibf-drop-active{border-color:var(--primary);background:var(--surface-muted);}
.ibf-drop-icon{width:56px;height:56px;margin:0 auto 14px;border-radius:14px;background:var(--surface);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;color:var(--primary);font-size:22px;}
.ibf-drop h2{font-size:clamp(1.05rem,3vw,1.2rem);font-weight:700;margin:0 0 8px;color:var(--text-main);}
.ibf-drop p{margin:0;font-size:14px;color:var(--text-muted);}
.ibf-drop .ibf-drop-browse{color:var(--primary);font-weight:600;}
.ibf-file{position:absolute;width:1px;height:1px;opacity:0;pointer-events:none;}
.ibf-canvas-grid{display:none;gap:18px;margin-top:4px;}
.ibf-canvas-grid.ibf-visible{display:grid;grid-template-columns:1fr;}
@media (min-width:768px){.ibf-canvas-grid.ibf-visible{grid-template-columns:1fr 1fr;align-items:start;}}
.ibf-pane{display:flex;flex-direction:column;gap:10px;min-width:0;}
.ibf-pane-head{display:flex;align-items:center;justify-content:space-between;gap:8px;}
.ibf-pane-head span{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted);}
.ibf-pane-head .ibf-badge{font-size:10px;padding:4px 8px;border-radius:999px;background:var(--surface-muted);color:var(--text-main);}
.ibf-canvas-wrap{border-radius:12px;border:1px solid var(--border);background:#0d0d12;overflow:auto;max-height:min(70vh,520px);-webkit-overflow-scrolling:touch;}
.ibf-canvas-wrap canvas{display:block;max-width:100%;height:auto;margin:0 auto;}
.ibf-prose{margin-top:2.75rem;}
.ibf-prose section{margin-bottom:2.25rem;}
.ibf-prose h2{font-size:clamp(1.25rem,3vw,1.5rem);font-weight:700;margin-bottom:.75rem;color:var(--text-main);}
.ibf-prose h3{font-size:1.05rem;font-weight:650;margin:1.25rem 0 .5rem;color:var(--text-main);}
.ibf-prose p{font-size:15px;line-height:1.65;color:var(--text-muted);margin-bottom:.85rem;}
.ibf-prose ul{margin:0 0 1rem;padding-left:1.2rem;color:var(--text-muted);font-size:15px;line-height:1.6;}
.ibf-prose li{margin-bottom:.35rem;}
.ibf-callout{border-left:4px solid var(--primary);padding:14px 16px;background:var(--surface-muted);border-radius:0 12px 12px 0;margin:1.25rem 0;}
.ibf-callout p{margin:0;font-size:14px;line-height:1.6;color:var(--text-muted);}
.ibf-callout p + p{margin-top:.65rem;}
.ibf-tips{display:grid;gap:12px;margin-top:1rem;}
@media (min-width:768px){.ibf-tips{grid-template-columns:repeat(3,1fr);}}
.ibf-tip{padding:14px 16px;border-radius:12px;border:1px solid var(--border);background:var(--surface);}
.ibf-tip strong{display:block;font-size:13px;font-weight:700;margin-bottom:6px;color:var(--text-main);}
.ibf-tip span{font-size:13px;line-height:1.5;color:var(--text-muted);}
.ibf-table-wrap{overflow-x:auto;margin:1rem 0;border-radius:12px;border:1px solid var(--border);}
.ibf-table{width:100%;border-collapse:collapse;font-size:14px;}
.ibf-table th,.ibf-table td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--border);}
.ibf-table th{background:var(--surface-muted);font-weight:650;color:var(--text-main);}
.ibf-table td{color:var(--text-muted);}
.ibf-table tr:last-child th,.ibf-table tr:last-child td{border-bottom:none;}
.internal-link{color:var(--primary);font-weight:600;text-decoration:underline;text-underline-offset:2px;}
.internal-link:hover{color:var(--primary-dark);}