#fsc-tool{--radius:10px;--err:#ff5c6a;--fav:#ffb347}[data-theme=light] #fsc-tool{--err:#d92f3d}.fsc-hero-actions,.fsc-share-bottom{justify-content:center;margin-top:8px;display:flex}.fsc-panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:20px;padding:24px}.fsc-panel-hd{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;margin-bottom:6px;display:flex}.fsc-panel-actions{flex-wrap:wrap;gap:8px;display:flex}.fsc-panel-title{color:var(--txt-strong);margin-bottom:8px;font-size:17px;font-weight:800}.fsc-panel-sub{color:var(--txt-dim);margin-bottom:16px;font-size:13px;line-height:1.6}.fsc-hint{color:var(--txt-dim);margin-top:6px;font-size:12px;line-height:1.5}.fsc-tabs{flex-wrap:wrap;gap:8px;margin-bottom:16px;display:flex}.fsc-tab{cursor:pointer;background:var(--surface2);border:1px solid var(--border);color:var(--txt-dim);border-radius:999px;padding:8px 16px;font-size:13px;font-weight:700;transition:all .2s}.fsc-tab:hover{border-color:var(--accent2);color:var(--txt-strong)}.fsc-tab.active{background:color-mix(in srgb, var(--accent2) 16%, transparent);border-color:color-mix(in srgb, var(--accent2) 45%, transparent);color:var(--accent2)}.fsc-convert-grid{grid-template-columns:1fr 1.3fr auto 1.3fr;align-items:end;gap:14px;margin-bottom:16px;display:grid}.fsc-field label{color:var(--txt-dim);text-transform:uppercase;letter-spacing:.4px;margin-bottom:6px;font-size:12px;font-weight:700;display:block}.fsc-field input,.fsc-field select{background:var(--surface2);border:1px solid var(--border);width:100%;color:var(--txt-strong);font-family:var(--mono);border-radius:8px;outline:none;padding:12px 14px;font-size:14px;transition:border-color .2s,box-shadow .2s}.fsc-field input:focus,.fsc-field select:focus{border-color:var(--accent2);box-shadow:0 0 0 3px color-mix(in srgb, var(--accent2) 14%, transparent)}.fsc-swap-btn{border:1px solid var(--border);background:var(--surface2);width:44px;height:44px;color:var(--accent2);cursor:pointer;border-radius:50%;font-size:18px;transition:background .2s,transform .2s}.fsc-swap-btn:hover{background:var(--surface);transform:rotate(180deg)}.fsc-result-wrap{text-align:center;background:var(--surface2);border:1px solid var(--border);border-radius:12px;margin-bottom:16px;padding:20px 16px}.fsc-result-value{color:var(--txt-strong);font-size:clamp(22px,4vw,34px);font-weight:900;font-family:var(--mono);letter-spacing:-.5px;word-break:break-word}.fsc-result-sub{color:var(--txt-dim);font-size:12px;font-family:var(--mono);margin-top:8px}.fsc-opts-row{flex-wrap:wrap;align-items:center;gap:18px;margin-bottom:14px;display:flex}.fsc-check{color:var(--txt);cursor:pointer;white-space:nowrap;align-items:center;gap:8px;font-size:13px;display:flex}.fsc-check input{width:16px;height:16px;accent-color:var(--accent2);cursor:pointer}input[type=range]{width:100%;accent-color:var(--accent2)}.fsc-actions{flex-wrap:wrap;gap:12px;display:flex}.pane-btn{border:1px solid var(--border);background:var(--surface2);color:var(--txt);cursor:pointer;border-radius:7px;padding:8px 14px;font-size:12px;font-weight:700;transition:background .2s,color .2s,border-color .2s}.pane-btn:hover{background:var(--surface);color:var(--txt-strong);border-color:var(--accent2)}.pane-btn.danger{color:var(--err);border-color:color-mix(in srgb, var(--err) 30%, transparent)}.pane-btn.danger:hover{background:color-mix(in srgb, var(--err) 10%, transparent);border-color:var(--err)}.pane-btn.on{color:var(--fav);border-color:color-mix(in srgb, var(--fav) 45%, transparent);background:color-mix(in srgb, var(--fav) 12%, transparent)}.fsc-parse-row{flex-wrap:wrap;gap:10px;display:flex}.fsc-parse-row input{flex:1;min-width:220px}.fsc-parse-result{color:var(--txt-dim);font-size:13px;font-family:var(--mono);min-height:18px;margin-top:10px}.fsc-parse-result.ok{color:var(--ok)}.fsc-parse-result.err{color:var(--err)}.fsc-table-toolbar{flex-wrap:wrap;gap:10px;margin-bottom:14px;display:flex}.fsc-table-toolbar input[type=text]{background:var(--surface2);border:1px solid var(--border);min-width:200px;color:var(--txt-strong);font-family:var(--sans);border-radius:8px;outline:none;flex:1;padding:10px 14px;font-size:13px}.fsc-table-toolbar input:focus{border-color:var(--accent2)}.fsc-table-wrap{border:1px solid var(--border);border-radius:8px;max-height:480px;overflow:auto}table.fsc-table{border-collapse:collapse;width:100%;font-family:var(--mono);font-size:13px}table.fsc-table th{background:var(--surface2);color:var(--txt-dim);text-align:left;border-bottom:1px solid var(--border);text-transform:uppercase;letter-spacing:.4px;padding:10px 14px;font-size:11px;position:sticky;top:0}table.fsc-table td{border-bottom:1px solid var(--border);color:var(--txt);padding:8px 14px}table.fsc-table tr:hover td{background:var(--surface2)}table.fsc-table td.fsc-star{text-align:center;cursor:pointer;color:var(--txt-dim);width:30px}table.fsc-table td.fsc-star.on{color:var(--fav)}table.fsc-table td.fsc-val{color:var(--txt-strong);cursor:pointer;font-weight:700}table.fsc-table td.fsc-status{text-align:center}table.fsc-table td.fsc-status.pass{color:var(--ok)}table.fsc-table td.fsc-status.fail{color:var(--err)}.fsc-batch-grid{grid-template-columns:1fr 1fr;gap:14px;margin-bottom:14px;display:grid}.fsc-batch-label{color:var(--txt-dim);text-transform:uppercase;letter-spacing:.4px;margin-bottom:6px;font-size:12px;font-weight:700;display:block}.fsc-textarea{resize:vertical;background:var(--surface2);border:1px solid var(--border);width:100%;min-height:160px;color:var(--txt);font-family:var(--mono);border-radius:8px;outline:none;padding:14px;font-size:13px;line-height:1.6}.fsc-textarea:focus{border-color:var(--accent2)}.fsc-est-grid{grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px;margin-bottom:16px;display:grid}.fsc-est-result{background:var(--surface2);border:1px solid var(--border);text-align:center;border-radius:10px;padding:16px}.fsc-est-result .big{color:var(--txt-strong);font-size:22px;font-weight:900;font-family:var(--mono)}.fsc-est-result .lbl{color:var(--txt-dim);text-transform:uppercase;letter-spacing:.5px;margin-top:4px;font-size:11px}.fsc-code-tabs{flex-wrap:wrap;gap:6px;margin-bottom:14px;display:flex}.fsc-code-tab{border:1px solid var(--border);background:var(--surface2);color:var(--txt-dim);cursor:pointer;border-radius:999px;padding:7px 14px;font-size:12.5px;font-weight:700;transition:all .2s}.fsc-code-tab.active{background:color-mix(in srgb, var(--accent2) 16%, transparent);border-color:color-mix(in srgb, var(--accent2) 40%, transparent);color:var(--accent2)}.fsc-code-block{background:var(--surface2);border:1px solid var(--border);font-family:var(--mono);color:var(--txt-strong);white-space:pre-wrap;word-break:break-word;border-radius:8px;padding:14px 16px;font-size:12.5px;line-height:1.7}.fsc-two-col{grid-template-columns:1fr 1fr;gap:20px;display:grid}.fsc-fav-list,.fsc-history-list{flex-direction:column;gap:8px;max-height:340px;display:flex;overflow-y:auto}.fsc-list-empty{text-align:center;color:var(--txt-dim);background:var(--surface2);border:1px dashed var(--border);border-radius:var(--radius);padding:20px;font-size:13px}.fsc-fav-item,.fsc-history-item{background:var(--surface2);border:1px solid var(--border);cursor:pointer;border-radius:9px;align-items:center;gap:10px;padding:9px 14px;transition:border-color .2s;display:flex}.fsc-fav-item:hover,.fsc-history-item:hover{border-color:var(--accent2)}.fsc-item-text{min-width:0;font-family:var(--mono);color:var(--txt);white-space:nowrap;text-overflow:ellipsis;flex:1;font-size:12.5px;overflow:hidden}.fsc-item-time{color:var(--txt-dim);font-size:11px;font-family:var(--mono);flex-shrink:0}.fsc-item-del{border:1px solid var(--border);width:24px;height:24px;color:var(--txt-dim);cursor:pointer;background:0 0;border-radius:6px;flex-shrink:0;font-size:12px}.fsc-item-del:hover{color:var(--err);border-color:var(--err)}.b64-howto{counter-reset:fsc-step;flex-direction:column;gap:14px;max-width:800px;list-style:none;display:flex}.b64-howto li{color:var(--txt);padding-left:40px;font-size:14px;line-height:1.65;position:relative}.b64-howto li:before{counter-increment:fsc-step;content:counter(fsc-step);background:linear-gradient(135deg, var(--grad1), var(--grad2));color:#fff;border-radius:8px;justify-content:center;align-items:center;width:28px;height:28px;font-size:13px;font-weight:800;display:flex;position:absolute;top:0;left:0}.b64-howto strong{color:var(--txt-strong)}.b64-howto code{font-family:var(--mono);color:var(--accent2)}.fsc-toast{background:var(--surface2);border:1px solid var(--border);color:var(--txt-strong);font-family:var(--mono);z-index:2000;opacity:0;pointer-events:none;border-radius:999px;padding:10px 20px;font-size:13px;font-weight:600;transition:opacity .25s,transform .25s;position:fixed;bottom:28px;left:50%;transform:translate(-50%)translateY(20px)}.fsc-toast.show{opacity:1;transform:translate(-50%)translateY(0)}@media (width<=900px){.fsc-convert-grid{grid-template-columns:1fr 1fr}.fsc-swap-btn{justify-self:center}.fsc-two-col,.fsc-batch-grid{grid-template-columns:1fr}}@media (width<=650px){.fsc-panel{padding:18px}.fsc-convert-grid{grid-template-columns:1fr}.fsc-actions{flex-direction:column}.fsc-actions button{width:100%}}