.stc-converter{margin-bottom:2rem;}
.stc-sheet{width:100%;background:var(--surface,#fff);border-radius:12px;border:1px solid var(--border,rgba(0,0,0,.08));box-shadow:0 2px 16px rgba(0,0,0,.04);overflow:hidden;}
.stc-block{display:flex;flex-direction:column;min-height:0;}
.stc-block-in{border-bottom:1px solid var(--border,rgba(0,0,0,.08));}
.stc-label{display:inline-block;padding:12px 16px 0;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.1em;color:var(--text-muted,#666);}
.stc-editor-holder{flex:1;min-height:220px;}
.stc-editor{height:220px;min-height:220px;width:100%;background:var(--surface-muted,#f6f8fa);}
.stc-bar{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:12px;padding:14px 16px;background:var(--surface-muted,rgba(0,0,0,.02));border-bottom:1px solid var(--border,rgba(0,0,0,.08));}
.stc-run{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 20px;border-radius:8px;font-size:14px;font-weight:600;cursor:pointer;border:none;background:var(--primary,#2563eb);color:#fff;box-shadow:0 2px 8px rgba(37,99,235,.2);transition:transform .12s ease,box-shadow .12s ease;-webkit-tap-highlight-color:transparent;}
.stc-run:hover{transform:translateY(-1px);box-shadow:0 4px 14px rgba(37,99,235,.3);}
.stc-run:active{transform:translateY(0);}
.stc-run-dot{width:6px;height:6px;border-radius:50%;background:currentColor;opacity:.9;}
.stc-bar-extra{display:flex;align-items:center;gap:8px;}
.stc-aux{padding:8px 14px;border-radius:6px;font-size:13px;font-weight:500;cursor:pointer;border:1px solid var(--border,rgba(0,0,0,.12));background:var(--surface,#fff);color:var(--text-main,#111);transition:background .15s ease,border-color .15s ease;-webkit-tap-highlight-color:transparent;}
.stc-aux:hover{background:var(--surface-muted,rgba(0,0,0,.04));border-color:var(--border,rgba(0,0,0,.2));}
.stc-out-top{display:flex;align-items:center;justify-content:space-between;padding:12px 16px 0;}
.stc-copy{padding:6px 12px;border-radius:6px;font-size:12px;font-weight:500;cursor:pointer;border:1px solid var(--border,rgba(0,0,0,.12));background:var(--surface,#fff);color:var(--text-main,#111);transition:background .15s ease,border-color .15s ease;-webkit-tap-highlight-color:transparent;}
.stc-copy:hover{background:var(--surface-muted,rgba(0,0,0,.04));}
.stc-editor-readonly.ace_editor .ace_cursor{display:none !important;}
.stc-converter .ace_editor.stc-editor{font-size:13px;line-height:1.5;}
.stc-converter .ace_scroller{background:var(--surface-muted,#f6f8fa) !important;}
.stc-converter .ace_gutter{background:rgba(0,0,0,.04) !important;border-right:1px solid var(--border,rgba(0,0,0,.08)) !important;color:var(--text-muted,#888) !important;}
.stc-converter .ace_marker-layer .ace_active-line{background:rgba(0,0,0,.04) !important;}
@media (min-width:768px){.stc-editor-holder{min-height:280px;}.stc-editor{height:280px;min-height:280px;}.stc-sheet{border-radius:14px;box-shadow:0 4px 24px rgba(0,0,0,.06);}}
@media (min-width:992px){.stc-editor-holder{min-height:360px;}.stc-editor{height:360px;min-height:360px;}.stc-sheet{border-radius:16px;box-shadow:0 8px 32px rgba(0,0,0,.06);}}