.bkbg-b64-wrap{box-sizing:border-box;border-radius:14px;padding:32px 24px;font-family:inherit;margin:0 auto}.bkbg-b64-title{margin:0 0 6px 0;font-family:var(--bkbg-b64-title-font-family,inherit);font-size:var(--bkbg-b64-title-font-size-d,var(--bkbg-b64-title-font-size,26px));font-weight:var(--bkbg-b64-title-font-weight,700);font-style:var(--bkbg-b64-title-font-style,normal);text-transform:var(--bkbg-b64-title-text-transform,none);text-decoration:var(--bkbg-b64-title-text-decoration,none);line-height:var(--bkbg-b64-title-line-height-d,var(--bkbg-b64-title-line-height,1.2));letter-spacing:var(--bkbg-b64-title-letter-spacing-d,var(--bkbg-b64-title-letter-spacing,normal));word-spacing:var(--bkbg-b64-title-word-spacing-d,var(--bkbg-b64-title-word-spacing,normal))}.bkbg-b64-subtitle{margin:0 0 20px 0;font-family:var(--bkbg-b64-sub-font-family,inherit);font-size:var(--bkbg-b64-sub-font-size-d,var(--bkbg-b64-sub-font-size,14px));font-weight:var(--bkbg-b64-sub-font-weight,normal);font-style:var(--bkbg-b64-sub-font-style,normal);text-transform:var(--bkbg-b64-sub-text-transform,none);text-decoration:var(--bkbg-b64-sub-text-decoration,none);line-height:var(--bkbg-b64-sub-line-height-d,var(--bkbg-b64-sub-line-height,1.5));letter-spacing:var(--bkbg-b64-sub-letter-spacing-d,var(--bkbg-b64-sub-letter-spacing,normal));word-spacing:var(--bkbg-b64-sub-word-spacing-d,var(--bkbg-b64-sub-word-spacing,normal))}.bkbg-b64-tabs{display:flex;gap:8px;margin-bottom:20px}.bkbg-b64-tab{padding:8px 22px;border-radius:8px;border:2px solid #e5e7eb;background:#fff;font-size:14px;font-weight:500;cursor:pointer;transition:all 0.18s}.bkbg-b64-tab.active{background:var(--b64-accent,#0ea5e9);border-color:var(--b64-accent,#0ea5e9);color:#fff;font-weight:700}.bkbg-b64-field-label{display:block;font-size:13px;font-weight:600;margin-bottom:6px}.bkbg-b64-textarea{width:100%;box-sizing:border-box;border:1.5px solid #e5e7eb;border-radius:10px;padding:12px 14px;font-size:14px;font-family:inherit;resize:vertical;min-height:100px;transition:border-color 0.18s;outline:none;margin-bottom:14px}.bkbg-b64-textarea:focus{border-color:var(--b64-accent,#0ea5e9);box-shadow:0 0 0 3px rgb(14 165 233 / .15)}.bkbg-b64-options{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:16px;align-items:center}.bkbg-b64-option-label{display:flex;align-items:center;gap:6px;font-size:13px;cursor:pointer;user-select:none}.bkbg-b64-option-label input[type=checkbox]{width:16px;height:16px;cursor:pointer}.bkbg-b64-btn{display:inline-flex;align-items:center;gap:6px;padding:10px 24px;border-radius:9px;border:none;background:var(--b64-accent,#0ea5e9);color:#fff;font-size:14px;font-weight:700;cursor:pointer;margin-bottom:16px;transition:opacity 0.2s,transform 0.15s}.bkbg-b64-btn:hover{opacity:.88;transform:translateY(-1px)}.bkbg-b64-btn:active{transform:translateY(0)}.bkbg-b64-output-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px}.bkbg-b64-output-label{font-size:13px;font-weight:600}.bkbg-b64-copy-btn{background:none;border:1.5px solid var(--b64-accent,#0ea5e9);border-radius:7px;padding:4px 12px;font-size:12px;font-weight:600;color:var(--b64-accent,#0ea5e9);cursor:pointer;transition:background 0.18s}.bkbg-b64-copy-btn:hover{background:rgb(14 165 233 / .1)}.bkbg-b64-output-box{border-radius:10px;padding:14px 16px;font-family:'Courier New',monospace;font-size:13px;word-break:break-all;line-height:1.7;min-height:70px;white-space:pre-wrap;position:relative}.bkbg-b64-output-placeholder{opacity:.45;font-style:italic}.bkbg-b64-stats{display:flex;gap:20px;flex-wrap:wrap;margin-top:14px}.bkbg-b64-stat{font-size:12px;background:rgb(0 0 0 / .04);padding:4px 10px;border-radius:6px}.bkbg-b64-error{background:#fef2f2;border:1.5px solid #fca5a5;border-radius:8px;padding:10px 14px;color:#dc2626;font-size:13px;margin-top:10px}.bkbg-b64-toast{position:absolute;top:8px;right:10px;background:#16a34a;color:#fff;font-size:11px;font-weight:700;border-radius:6px;padding:3px 10px;opacity:0;transition:opacity 0.2s;pointer-events:none}.bkbg-b64-toast.show{opacity:1}@media (max-width:1024px){.bkbg-b64-title{font-size:var(--bkbg-b64-title-font-size-t,var(--bkbg-b64-title-font-size-d,var(--bkbg-b64-title-font-size,26px)));line-height:var(--bkbg-b64-title-line-height-t,var(--bkbg-b64-title-line-height-d,var(--bkbg-b64-title-line-height,1.2)));letter-spacing:var(--bkbg-b64-title-letter-spacing-t,var(--bkbg-b64-title-letter-spacing-d,var(--bkbg-b64-title-letter-spacing,normal)));word-spacing:var(--bkbg-b64-title-word-spacing-t,var(--bkbg-b64-title-word-spacing-d,var(--bkbg-b64-title-word-spacing,normal)))}.bkbg-b64-subtitle{font-size:var(--bkbg-b64-sub-font-size-t,var(--bkbg-b64-sub-font-size-d,var(--bkbg-b64-sub-font-size,14px)));line-height:var(--bkbg-b64-sub-line-height-t,var(--bkbg-b64-sub-line-height-d,var(--bkbg-b64-sub-line-height,1.5)));letter-spacing:var(--bkbg-b64-sub-letter-spacing-t,var(--bkbg-b64-sub-letter-spacing-d,var(--bkbg-b64-sub-letter-spacing,normal)));word-spacing:var(--bkbg-b64-sub-word-spacing-t,var(--bkbg-b64-sub-word-spacing-d,var(--bkbg-b64-sub-word-spacing,normal)))}}@media (max-width:767px){.bkbg-b64-title{font-size:var(--bkbg-b64-title-font-size-m,var(--bkbg-b64-title-font-size-t,var(--bkbg-b64-title-font-size-d,var(--bkbg-b64-title-font-size,26px))));line-height:var(--bkbg-b64-title-line-height-m,var(--bkbg-b64-title-line-height-t,var(--bkbg-b64-title-line-height-d,var(--bkbg-b64-title-line-height,1.2))));letter-spacing:var(--bkbg-b64-title-letter-spacing-m,var(--bkbg-b64-title-letter-spacing-t,var(--bkbg-b64-title-letter-spacing-d,var(--bkbg-b64-title-letter-spacing,normal))));word-spacing:var(--bkbg-b64-title-word-spacing-m,var(--bkbg-b64-title-word-spacing-t,var(--bkbg-b64-title-word-spacing-d,var(--bkbg-b64-title-word-spacing,normal))))}.bkbg-b64-subtitle{font-size:var(--bkbg-b64-sub-font-size-m,var(--bkbg-b64-sub-font-size-t,var(--bkbg-b64-sub-font-size-d,var(--bkbg-b64-sub-font-size,14px))));line-height:var(--bkbg-b64-sub-line-height-m,var(--bkbg-b64-sub-line-height-t,var(--bkbg-b64-sub-line-height-d,var(--bkbg-b64-sub-line-height,1.5))));letter-spacing:var(--bkbg-b64-sub-letter-spacing-m,var(--bkbg-b64-sub-letter-spacing-t,var(--bkbg-b64-sub-letter-spacing-d,var(--bkbg-b64-sub-letter-spacing,normal))));word-spacing:var(--bkbg-b64-sub-word-spacing-m,var(--bkbg-b64-sub-word-spacing-t,var(--bkbg-b64-sub-word-spacing-d,var(--bkbg-b64-sub-word-spacing,normal))))}}