.bt-page{padding:56px 0 100px;display:flex;flex-direction:column;align-items:center}
.bt-intro{text-align:center;max-width:46ch;margin-bottom:20px}
.bt-intro .hero__eyebrow{margin-bottom:18px}
.bt-intro h1{font-family:var(--font-display);font-size:clamp(1.8rem,4vw,2.4rem);letter-spacing:-0.02em;margin:0 0 10px}
.bt-intro p{color:var(--ink-soft);margin:0;line-height:1.6}
.bt-tabs{display:flex;flex-wrap:wrap;gap:6px;background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:5px;max-width:fit-content;margin:0 auto 20px}
.bt-tab{border:none;background:transparent;padding:9px 16px;border-radius:999px;font-weight:600;font-size:.82rem;color:var(--ink-soft);cursor:pointer;transition:all var(--dur-fast) var(--ease);white-space:nowrap;display:flex;align-items:center;gap:6px}
.bt-tab svg{width:16px;height:16px;stroke:currentColor}
.bt-tab:hover{color:var(--ink)}.bt-tab.is-active{background:var(--ink);color:#fff}
.bt-content{display:grid;grid-template-columns:1fr 340px;gap:20px;width:100%;max-width:900px}@media(max-width:750px){.bt-content{grid-template-columns:1fr}}
.bt-canvas-wrap{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);aspect-ratio:3/4;position:relative;overflow:hidden;max-height:520px}
#bt-canvas{width:100%;height:100%}
.bt-detail{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:24px;display:flex;flex-direction:column;align-items:center;text-align:center;justify-content:center;min-height:300px}
.bt-detail-placeholder{color:var(--ink-soft);display:flex;flex-direction:column;align-items:center;gap:10px;font-size:.88rem}
.bt-detail-placeholder svg{stroke:var(--ink-soft);opacity:.4}
.bt-detail-icon-wrap{width:64px;height:64px;border-radius:50%;background:rgba(61,90,254,.08);display:flex;align-items:center;justify-content:center;margin-bottom:12px}
.bt-detail-icon-wrap svg{stroke:var(--accent)}
.bt-detail-content h2{font-family:var(--font-display);font-size:1.25rem;margin:0 0 8px}
.bt-detail-content p{font-size:.85rem;color:var(--ink-soft);line-height:1.5;margin:0 0 12px}
.bt-funfact{background:rgba(61,90,254,.04);border-radius:10px;padding:12px 14px;font-size:.78rem;color:var(--accent-ink);border-left:3px solid var(--accent);text-align:left;width:100%}