.ot{--ot-line:var(--line,#dfe3dc);--ot-ink:var(--ink,#131713);--ot-muted:var(--muted,#687068);--ot-accent:var(--green,#1e5b3a);--ot-soft:var(--green-soft,#e7f0e9);--ot-hi:var(--lime,#dff36f);display:grid;gap:16px;min-width:0}
    .ot-drop{border:2px dashed var(--ot-line);border-radius:14px;background:#fff;padding:34px 18px;text-align:center;cursor:pointer;transition:border-color .15s,background .15s}
    .ot-drop:hover,.ot-drop.is-over{border-color:var(--ot-accent);background:var(--ot-soft)}
    .ot-drop:focus-visible{outline:3px solid var(--ot-hi);outline-offset:2px}
    .ot-drop strong{display:block;font-size:18px;margin-bottom:4px;color:var(--ot-ink)}
    .ot-drop span{color:var(--ot-muted);font-size:14px}
    .ot-langs{margin:0;border:1px solid var(--ot-line);border-radius:12px;background:#fff;padding:12px 14px 14px;display:flex;flex-wrap:wrap;gap:8px;min-width:0}
    .ot-langs legend{font-size:13px;font-weight:700;color:var(--ot-ink);padding:0 4px}
    .ot-hint{font-weight:500;color:var(--ot-muted)}
    .ot-lang{display:flex;align-items:center;gap:8px;border:1px solid var(--ot-line);border-radius:999px;background:#fff;padding:7px 12px;font-weight:600;font-size:14px;cursor:pointer;color:var(--ot-ink)}
    .ot-lang:has(input:checked){border-color:var(--ot-accent);background:var(--ot-soft)}
    .ot-lang small{font-weight:500;color:var(--ot-muted);font-size:12px}
    .ot-opts{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px;background:#fff;border:1px solid var(--ot-line);border-radius:12px;padding:14px}
    .ot-opts label{display:grid;gap:6px;align-content:start;font-size:13px;font-weight:600;color:var(--ot-ink)}
    .ot-opts select{padding:8px 10px;border:1px solid var(--ot-line);border-radius:8px;font-size:14px;background:#fff;color:var(--ot-ink);min-width:0}
    .ot-actions{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
    .ot-btn{border:0;border-radius:999px;padding:10px 18px;font-weight:700;font-size:14px;cursor:pointer;background:var(--ot-ink);color:#fff}
    .ot-btn.ghost{background:transparent;border:1px solid var(--ot-ink);color:var(--ot-ink)}
    .ot-btn:disabled{opacity:.45;cursor:not-allowed}
    .ot-summary{font-size:14px;color:var(--ot-muted)}
    .ot-error{margin:0;background:#fbeeee;border:1px solid #e3b9b9;color:#7d2424;border-radius:10px;padding:10px 12px;font-size:14px}
    .ot-list{list-style:none;margin:0;padding:0;display:grid;gap:10px}
    .ot-list:empty{display:none}
    .ot-item{display:grid;gap:10px;background:#fff;border:1px solid var(--ot-line);border-radius:12px;padding:12px;min-width:0}
    .ot-head{display:grid;grid-template-columns:52px minmax(0,1fr) auto;gap:12px;align-items:center}
    .ot-thumb{width:52px;height:52px;object-fit:contain;border-radius:6px;background:var(--ot-soft);display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:700;color:var(--ot-accent)}
    .ot-name{font-weight:600;font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
    .ot-meta{font-size:13px;color:var(--ot-muted);font-variant-numeric:tabular-nums}
    .ot-meta .err{color:#9a2f2f}
    .ot-bar{height:4px;border-radius:4px;background:var(--ot-soft);overflow:hidden;margin-top:6px}
    .ot-bar i{display:block;height:100%;width:0;background:var(--ot-accent);transition:width .2s}
    .ot-text{min-height:140px;max-height:420px;resize:vertical;font:14px/1.5 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;white-space:pre-wrap;overflow-wrap:anywhere}
    .ot-row{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
    .ot-small{border:1px solid var(--ot-line);background:#fff;color:var(--ot-ink);border-radius:999px;padding:6px 12px;font-size:13px;font-weight:700;cursor:pointer}
    .ot-small:disabled{opacity:.45;cursor:not-allowed}
    .ot-note{font-size:13px;color:var(--ot-muted);margin:0}
    @media (max-width:480px){.ot-head{grid-template-columns:44px minmax(0,1fr) auto}.ot-thumb{width:44px;height:44px}.ot-langs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}.ot-lang{padding:7px 10px;font-size:13px}.ot-lang small{display:none}}
/* the page styles every input and button inside .lab-tool; these rules win back the tool's own look */
.ot [hidden]{display:none!important}
.ot .ot-lang input{width:auto;padding:0;border:0;margin:0;accent-color:var(--ot-accent)}
.ot .ot-small{padding:6px 12px;border:1px solid var(--ot-line);background:#fff;color:var(--ot-ink)}
.ot .ot-icon{width:32px;height:32px;padding:0;border:1px solid var(--ot-line);background:#fff;color:var(--ot-ink);border-radius:8px;font-size:15px;line-height:1;cursor:pointer}
.ot .ot-icon:disabled{opacity:.35;cursor:not-allowed}