:root{
  --bg:#f5fbff;
  --bg2:#eaf5ff;
  --card:#ffffff;
  --card2:#f7fbff;
  --line:#d5e7f8;
  --text:#17324b;
  --muted:#6a8298;
  --accent:#62b3ff;
  --accent2:#7be3a2;
  --danger:#f58b99;
  --soft:#eef6ff;
  --shadow:0 12px 28px rgba(74,144,226,.10);
}
*{box-sizing:border-box}
html,body{margin:0;font-family:Arial,Helvetica,sans-serif;background:linear-gradient(180deg,var(--bg),var(--bg2));color:var(--text)}
body{min-height:100vh;padding:14px}
button,select{font:inherit}
.app-shell{max-width:420px;margin:0 auto}
.interpreter-card{background:var(--card);border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow);padding:12px}
.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}
.brand-block{display:flex;gap:10px;align-items:center}
.brand-icon{width:36px;height:36px;border-radius:12px;background:linear-gradient(135deg,var(--accent2),var(--accent));display:grid;place-items:center;font-weight:700;font-size:15px}
.brand-block h1{margin:0;font-size:16px;line-height:1.1}
.brand-block p{margin:2px 0 0;color:var(--muted);font-size:11px}
.icon-btn{width:34px;height:34px;border-radius:12px;border:1px solid var(--line);background:var(--card2);color:var(--text);cursor:pointer}
.icon-btn.small{width:30px;height:30px;border-radius:10px}
.lang-row{display:grid;grid-template-columns:1fr 44px 1fr;gap:8px;align-items:end;margin-bottom:10px}
.field label{display:block;font-size:10px;color:var(--muted);margin-bottom:4px}
.field select{width:100%;height:36px;border:1px solid var(--line);background:var(--card2);color:var(--text);border-radius:12px;padding:0 10px;font-size:12px}
.swap-btn{height:36px;border:none;border-radius:12px;background:linear-gradient(135deg,var(--accent),var(--accent2));color:#0d2a40;font-weight:700;cursor:pointer}
.live-panels{display:grid;gap:8px}
.text-panel{background:var(--card2);border:1px solid var(--line);border-radius:16px;padding:10px}
.panel-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:7px}
.lang-badge{font-size:11px;font-weight:700;background:#fff;border:1px solid var(--line);padding:5px 8px;border-radius:999px}
.panel-status{font-size:10px;color:var(--muted)}
.panel-body{min-height:92px;max-height:132px;overflow:auto;font-size:13px;line-height:1.45;white-space:pre-wrap}
.muted-body{color:#4b6882}
.bottom-actions{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:10px}
.action-btn{height:38px;border-radius:12px;border:1px solid var(--line);background:var(--soft);color:var(--text);cursor:pointer;font-size:12px;font-weight:700}
.action-btn.primary{background:linear-gradient(135deg,var(--accent2),var(--accent));color:#0d2a40}
.action-btn.danger{background:linear-gradient(135deg,#ffd6dc,var(--danger));color:#5d1a25}
.action-btn.soft{background:var(--soft)}
.modal-backdrop{position:fixed;inset:0;background:rgba(10,26,42,.22);display:flex;align-items:center;justify-content:center;padding:14px}
.modal-backdrop.hidden{display:none}
.modal-card{width:min(100%,400px);max-height:86vh;overflow:auto;background:var(--card);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);padding:12px}
.modal-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}
.modal-head h2{margin:0;font-size:15px}
.modal-section{border-top:1px solid var(--line);padding-top:10px;margin-top:10px}
.modal-section h3{margin:0 0 8px;font-size:13px}
.row-item,.pack-item{display:flex;justify-content:space-between;gap:10px;align-items:center;padding:8px 0}
.row-item strong,.pack-item strong{display:block;font-size:12px}
.row-item span,.pack-item span{display:block;font-size:10px;color:var(--muted);margin-top:2px}
.toggle-btn,.mini-btn{border:1px solid var(--line);background:var(--soft);color:var(--text);border-radius:999px;height:30px;padding:0 12px;cursor:pointer;font-size:11px;font-weight:700;white-space:nowrap}
.toggle-btn.is-on,.mini-btn.installed{background:linear-gradient(135deg,#d9fbe5,#ecfff3);color:#166534}
@media (max-width:380px){.bottom-actions{grid-template-columns:1fr 1fr}.lang-row{grid-template-columns:1fr}.swap-btn{width:100%}}