:root{
  --bg:#f5f7fb; --card:#fff; --line:#3b82f6; --muted:#6b7280; --text:#0f172a; --brand:#1976ff;
}
*{box-sizing:border-box;font-family:Inter,system-ui,Segoe UI,Roboto,Arial,sans-serif}
body{margin:0;background:var(--bg);color:var(--text)}
.container{max-width:360px;margin:0 auto;padding:12px 12px 40px}
.card{background:var(--card);border:2px solid var(--line);border-radius:16px;padding:12px}
.btn{display:block;width:100%;padding:12px 16px;border:none;border-radius:12px;background:var(--brand);color:#fff;font-weight:600;text-align:center;cursor:pointer}
.btn.ghost{background:#fff;color:var(--text);border:2px solid var(--line)}
.input{width:100%;padding:10px 12px;border:2px solid var(--line);border-radius:10px;background:#eef5ff}
.row{display:flex;align-items:center;justify-content:space-between;gap:8px}
.caption{font-size:12px;color:var(--muted)}
.title{font-weight:700}
.pill{display:inline-block;padding:4px 10px;border:2px solid var(--line);border-radius:999px}
.center{text-align:center}
.space{height:16px}
.tabs{display:flex;gap:8px}
.tabs .pill.active{background:#eef5ff;border-style:solid}
#previewLine{ margin-top:6px; }