.flx{display:flex;flex-direction:column;gap:20px}.flx__preview{padding:16px;border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-bg-soft, rgba(0, 0, 0, .03));overflow:hidden}.flx__stage{min-height:240px;padding:16px;border:2px dashed var(--color-border);border-radius:var(--radius-sm);background:var(--color-bg)}.flx__item{position:relative;display:flex;align-items:center;justify-content:center;min-width:60px;min-height:60px;padding:12px 16px;border-radius:var(--radius-sm);color:#fff;font-size:14px;font-weight:600;cursor:pointer;transition:transform .15s ease,box-shadow .15s ease,outline-color .15s ease;outline:2px solid transparent;outline-offset:2px;user-select:none}.flx__item:hover{transform:translateY(-2px);box-shadow:0 4px 12px #00000026}.flx__item:focus-visible{outline-color:var(--color-primary, #2b6cff)}.flx__item--selected{outline-color:var(--color-primary, #2b6cff);box-shadow:0 0 0 4px #2b6cff33}.flx__item-label{pointer-events:none}.flx__item-badge{position:absolute;top:4px;right:4px;padding:1px 6px;border-radius:8px;background:#ffffff40;color:#fff;font-size:10px;font-weight:500;pointer-events:none}.flx__item-remove{position:absolute;top:-8px;right:-8px;width:22px;height:22px;display:flex;align-items:center;justify-content:center;padding:0;border:1px solid var(--color-border);border-radius:50%;background:var(--color-bg);color:var(--color-text);font-size:14px;line-height:1;cursor:pointer;transition:background .15s,color .15s}.flx__item-remove:hover:not(:disabled){background:var(--color-danger, #e53e3e);color:#fff;border-color:var(--color-danger, #e53e3e)}.flx__item-remove:disabled{opacity:.4;cursor:not-allowed}.flx__presets{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:14px 16px;background:var(--color-bg-soft, rgba(0, 0, 0, .03));border:1px solid var(--color-border);border-radius:var(--radius-md)}.flx__presets-label{font-size:14px;font-weight:600;color:var(--color-text)}.flx__btn{padding:6px 14px;border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-bg);color:var(--color-text);font-size:13px;cursor:pointer;transition:background .15s,border-color .15s}.flx__btn:hover:not(:disabled){border-color:var(--color-primary, #2b6cff)}.flx__btn:disabled{opacity:.5;cursor:not-allowed}.flx__btn--add{align-self:flex-start;margin-top:8px;padding:8px 18px;border-style:dashed;color:var(--color-primary, #2b6cff)}.flx__btn--mini{padding:3px 8px;font-size:12px;font-family:var(--font-mono)}.flx__panels{display:grid;grid-template-columns:1fr 1fr;gap:16px}.flx__panel{padding:16px;border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-bg);display:flex;flex-direction:column;gap:14px}.flx__panel-title{margin:0 0 4px;padding-bottom:8px;border-bottom:1px solid var(--color-border);font-size:15px;font-weight:700;color:var(--color-text)}.flx__panel-sub{font-size:13px;font-weight:500;color:var(--color-text-soft)}.flx__empty{margin:0;padding:20px;text-align:center;color:var(--color-text-soft);font-style:italic}.flx__field{display:flex;flex-direction:column;gap:6px;font-size:13px;color:var(--color-text)}.flx__field--disabled{opacity:.5;pointer-events:none}.flx__field-label{font-weight:600;display:flex;align-items:center;gap:6px}.flx__field-label output{font-family:var(--font-mono);font-size:12px;color:var(--color-text-soft);font-weight:500}.flx__field input[type=range]{width:100%;accent-color:var(--color-primary, #2b6cff)}.flx__btn-group{display:flex;flex-wrap:wrap;gap:4px}.flx__btn-option{padding:5px 12px;border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-bg);color:var(--color-text);font-size:12px;cursor:pointer;transition:background .15s,border-color .15s,color .15s}.flx__btn-option:hover:not(:disabled){border-color:var(--color-primary, #2b6cff)}.flx__btn-option--active{background:var(--color-primary, #2b6cff);border-color:var(--color-primary, #2b6cff);color:#fff}.flx__btn-option:disabled{opacity:.5;cursor:not-allowed}.flx__basis-input{display:flex;flex-direction:column;gap:6px}.flx__basis-input input{padding:6px 10px;border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-bg);color:var(--color-text);font-family:var(--font-mono);font-size:13px}.flx__basis-quick{display:flex;flex-wrap:wrap;gap:4px}.flx__output{padding:16px;background:var(--color-bg-soft, rgba(0, 0, 0, .03));border:1px solid var(--color-border);border-radius:var(--radius-md)}.flx__output-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}.flx__output-label{font-size:14px;font-weight:600;color:var(--color-text)}.flx__code{margin:0;padding:12px 14px;background:var(--color-bg);border-radius:var(--radius-sm);font-family:var(--font-mono);font-size:14px;color:var(--color-text);white-space:pre-wrap;word-break:break-all;line-height:1.5}.flx__hint{margin:8px 0 0;font-size:13px;color:var(--color-text-soft)}@media(prefers-color-scheme:dark){.flx__panel,.flx__code,.flx__stage{background:#ffffff0a}.flx__item-remove{background:#0006}}@media(max-width:768px){.flx__panels{grid-template-columns:1fr}.flx__stage{min-height:180px}}@media(max-width:414px){.flx__presets{flex-direction:column;align-items:stretch}.flx__presets-label{text-align:center}.flx__btn-group{flex-direction:column;align-items:stretch}.flx__btn-option{width:100%}}