.bt-product-wrap{display:flex;gap:48px;max-width:1100px;margin:0 auto;padding:24px 0}.bt-gallery{flex:0 0 44%}.bt-main-image{width:100%;height:auto;display:block;border-radius:4px}.bt-gallery-thumbs{display:flex;gap:8px;margin-top:10px;flex-wrap:wrap}.bt-thumb{width:76px;height:76px;object-fit:cover;cursor:pointer;border:2px solid transparent;border-radius:3px;transition:border-color .15s}.bt-thumb:hover{border-color:#555}.bt-summary{flex:1;min-width:0}.bt-short-desc{color:#666;margin-bottom:24px}.bt-steps-accordion{margin-bottom:24px;counter-reset:bt-step-num}.bt-step{border:1px solid #ddd;border-radius:5px;margin-bottom:8px;overflow:hidden;transition:border-color .2s;counter-increment:bt-step-num}.bt-step__num:after{content:counter(bt-step-num)}.bt-step--disabled{opacity:.42;pointer-events:none}.bt-step--skip{display:none;counter-increment:none}.bt-step--active{border-color:#111}.bt-step--done{border-color:#4a8a4a}.bt-step__header{display:flex;align-items:center;gap:10px;padding:13px 16px;background:#f6f6f6;cursor:default}.bt-step--active .bt-step__header{background:#111;color:#fff}.bt-step--done .bt-step__header{background:#eaf4ea;color:#285228}.bt-step__num{width:24px;height:24px;border-radius:50%;border:2px solid currentColor;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;flex-shrink:0}.bt-step__label{font-weight:600;font-size:14px}.bt-step__choice{margin-left:auto;font-size:13px;opacity:.75;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:200px}.bt-step__body{padding:18px 16px;display:none}.bt-step--active .bt-step__body,.bt-step--done .bt-step__body{display:block}.bt-misure{display:flex;gap:24px;flex-wrap:wrap}.bt-misure__field{display:flex;flex-direction:column;gap:6px;font-weight:500;font-size:14px}.bt-misure__field input[type=number]{padding:7px 10px;border:1px solid #ccc;border-radius:4px;width:130px;font-size:14px}.bt-misure__field input[type=number]:focus{border-color:#111;outline:none}.bt-options-grid{display:flex;flex-wrap:wrap;gap:10px;max-height:320px;overflow-y:auto;padding-right:4px}.bt-option{border:2px solid #e0e0e0;border-radius:5px;padding:8px;cursor:pointer;text-align:center;width:94px;transition:border-color .15s,background .15s;position:relative}.bt-option:hover{border-color:#888}.bt-option--selected{border-color:#111;background:#f0f0f0}.bt-option__img{width:76px;height:76px;object-fit:cover;display:block;margin:0 auto 5px;border-radius:3px}.bt-option__label{font-size:11px;display:block;line-height:1.3}.bt-option__delta{font-size:10px;color:#888;display:block;margin-top:2px}.bt-price-wrap{margin:20px 0 12px;font-size:26px;font-weight:700;display:flex;align-items:baseline;gap:8px}.bt-price-label{font-size:14px;font-weight:400;color:#666}#bt-add-to-cart:disabled{opacity:.38;cursor:not-allowed}@media (max-width:768px){.bt-product-wrap{flex-direction:column;gap:24px;padding-left:16px;padding-right:16px}.bt-gallery{flex:none}.bt-step__choice{display:none}}