/* Parent zone - adult UI, deliberately plain */
      #screen-parent{font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}
      #screen-parent .panel{text-align:left;padding:18px 16px}
      #screen-parent h2{font-size:20px;margin:0 0 4px;font-weight:700;letter-spacing:-.01em}
      #screen-parent h3{font-size:15px;margin:18px 0 8px;font-weight:700}
      #screen-parent p,#screen-parent li{font-size:14px;line-height:1.5;color:var(--ink-soft)}
      .parent-stats{display:grid;grid-template-columns:1fr 1fr 1fr;gap:8px;margin:12px 0}
      .p-stat{background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:10px;text-align:center}
      .p-stat b{display:block;font-size:22px;color:var(--ink)}
      .p-stat span{font-size:12px;color:var(--ink-soft)}
      .parent-lang{display:flex;gap:6px;margin:10px 0}
      .parent-lang button{flex:1;padding:9px;border-radius:999px;border:1px solid var(--line);background:var(--card);font-weight:600;font-size:14px}
      .parent-lang button.active{background:var(--ink);color:#fff;border-color:var(--ink)}
      .mastery-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:6px}
      .mastery-grid.letters{grid-template-columns:repeat(5,1fr)}
      .m-cell{aspect-ratio:1;border-radius:10px;display:flex;flex-direction:column;align-items:center;justify-content:center;font-weight:700;border:1px solid var(--line);background:#eef7ff;color:#8a9aa8}
      .m-cell .mc{font-size:20px;line-height:1}
      .m-cell .ms{font-size:10px;font-weight:600;margin-top:2px}
      .m-cell.mastered{background:#d1fae5;border-color:#6ee7b7;color:#065f46}
      .m-cell.learning{background:#fef3c7;border-color:#fcd34d;color:#92400e}
      .legend{display:flex;gap:12px;flex-wrap:wrap;font-size:12px;color:var(--ink-soft);margin-top:8px}
      .legend i{width:12px;height:12px;border-radius:4px;display:inline-block;vertical-align:-2px;margin-right:4px}
      .parent-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
      .parent-actions button{padding:10px 14px;border-radius:999px;border:1px solid var(--line);background:var(--card);font-weight:600;font-size:14px}
      .parent-actions button.danger{color:#b91c1c;border-color:#fecaca;background:#fff1f2}
      @media(max-width:520px){.parent-stats{grid-template-columns:1fr 1fr 1fr}.mastery-grid{grid-template-columns:repeat(5,1fr)}}
      /* v58 levels settings: one row per domain */
      .lvl-row{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:8px 0}
      .lvl-dom{font-weight:800;min-width:170px}
      .lvl-btns{display:flex;flex-wrap:wrap;gap:8px}
      .lvl-btns .age-btn{padding:8px 13px;font-size:15px}
      .lvl-auto{border-style:dashed}
      /* v103: parent first-run setup overlay ("Dành cho bố mẹ") —
         adult-facing like the rest of this file, one card, one
         screen; shown once for a brand-new profile between the
         starter-pet claim and the first play, and re-opened from
         the parent zone ("Chỉnh theo tuổi của bé"). */
      .parent-setup{position:fixed;inset:0;z-index:67;display:flex;align-items:center;justify-content:center;padding:14px;background:rgba(30,45,70,.45)}
      .parent-setup[hidden]{display:none}
      .ps-card{background:#fffdf5;border-radius:22px;padding:20px 20px 16px;width:100%;max-width:min(94vw,470px);max-height:100%;overflow-y:auto;box-shadow:0 14px 40px rgba(20,35,60,.35);border:3px solid #ffd166;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}
      .ps-title{font-size:22px;font-weight:800;color:#26436b;margin:0 0 4px;line-height:1.25}
      .ps-intro{font-size:14.5px;line-height:1.45;color:#5b6b80;margin:0}
      .ps-q{font-size:16.5px;font-weight:700;color:#26436b;margin:15px 0 8px}
      .ps-opts{display:flex;flex-wrap:wrap;gap:8px}
      .ps-opt{flex:1 1 28%;min-height:48px;padding:10px 8px;border-radius:14px;border:2px solid #d7e0ea;background:#fff;font:inherit;font-size:15.5px;font-weight:700;color:#40536e;cursor:pointer}
      .ps-opt.active{background:#26436b;color:#fff;border-color:#26436b}
      .ps-note{font-size:13px;line-height:1.45;color:#71808f;margin:12px 0 0}
      .ps-btns{display:flex;gap:10px;margin-top:18px;flex-wrap:wrap}
      .ps-btns button{font:inherit;font-weight:800;border:none;cursor:pointer;border-radius:999px;padding:13px 18px;font-size:16px;min-height:48px}
      .ps-btns button:active{transform:translateY(2px);box-shadow:none}
      .ps-apply{flex:1;background:#37b24d;color:#fff;box-shadow:0 4px 0 #2b8a3e}
      .ps-apply[disabled]{background:#b9c6d2;box-shadow:none;cursor:default}
      .ps-skip{background:#eef2f7;color:#40536e;box-shadow:0 4px 0 #cfd9e4}