.me2-hide { display: none !important; }
/* matrix inputs */
.me2-ab { align-items: start; }
.me2-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 6px; padding: 8px; border-left: 3px solid var(--ink); border-right: 3px solid var(--ink); border-radius: 8px; }
.me2-grid.me2-n2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.me2-grid.me2-n2 .me2-x3, .me2-eqs.me2-n2 .me2-x3 { display: none !important; }
.fld .me2-grid input, .fld .me2-eqs input { padding: 8px 4px !important; text-align: center; min-width: 0; width: 100%; -moz-appearance: textfield; }
.me2-grid input::-webkit-inner-spin-button, .me2-eqs input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
/* matrix output */
.me2-mx { display: inline-grid; grid-template-columns: repeat(var(--n), auto); gap: 4px 14px; padding: 4px 12px; border-left: 2px solid currentColor; border-right: 2px solid currentColor; border-radius: 6px; font-size: 1rem; font-weight: 600; text-align: center; vertical-align: middle; font-variant-numeric: tabular-nums; letter-spacing: 0; font-style: normal; }
.me2-mx i { font-style: normal; }
.out-main .me2-mx { font-size: clamp(1.05rem, 3.4vw, 1.4rem); margin-top: 6px; }
.me2-mxw { display: flex; align-items: center; gap: 10px; justify-content: center; font-weight: 600; }
/* equations */
.me2-eqs { display: grid; gap: 8px; }
.me2-eqr { display: flex; align-items: center; gap: 6px; }
.me2-eqr > b { width: 18px; color: var(--muted); font-size: .85rem; }
.me2-eqr > i { font-style: normal; color: var(--muted); font-weight: 700; }
.me2-eqc { flex: 1; display: flex; align-items: center; gap: 4px; min-width: 0; }
.me2-eqc span { font-weight: 700; color: var(--brand); font-style: italic; }
.me2-sys { margin: 0; padding: 12px 14px 12px 34px; border-radius: 14px; background: var(--surface-2); font-weight: 600; display: grid; gap: 4px; }
/* multiplication table */
.me2-tlist { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 6px; }
.me2-tlist li { display: flex; justify-content: space-between; gap: 8px; padding: 9px 12px; border-radius: 10px; background: var(--surface-2); font-variant-numeric: tabular-nums; }
.me2-tlist li b { color: var(--brand); }
.me2-tlist.many { max-height: 420px; overflow: auto; }
.me2-chart td, .me2-chart th { padding: 6px 8px !important; text-align: center; }
.me2-hl { color: var(--brand); }
.me2-quiz { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 8px; }
.me2-quiz li { display: flex; align-items: center; gap: 8px; padding: 8px 10px; border-radius: 12px; background: var(--surface-2); }
.me2-quiz label { font-weight: 600; white-space: nowrap; }
.me2-quiz input { width: 80px; padding: 6px 8px; border: 1px solid var(--border); border-radius: 8px; font: inherit; }
.me2-quiz i { font-style: normal; font-size: .85rem; font-weight: 700; }
.me2-quiz li.ok { background: #ecfdf5; } .me2-quiz li.ok i { color: #047857; }
.me2-quiz li.bad { background: #fef2f2; } .me2-quiz li.bad i { color: #b91c1c; }
.me2-score { font-size: 1.1rem; margin: 0; }
@media print {
  body.me2-print * { visibility: hidden !important; }
  body.me2-print #me2-tbl, body.me2-print #me2-tbl * { visibility: visible !important; }
  body.me2-print #me2-tbl { position: absolute; left: 0; top: 0; width: 100%; }
  body.me2-print .me2-tlist { grid-template-columns: repeat(2, 1fr); max-height: none; overflow: visible; }
  body.me2-print .me2-tlist li { font-size: 14pt; border: 1px solid #ccc; }
}
/* triangle */
.me2-tri { display: block; width: 100%; max-width: 260px; max-height: 190px; margin: 0 auto; overflow: visible; }
.me2-tri path { fill: var(--brand-50); stroke: var(--brand); stroke-width: 3; stroke-linejoin: round; }
.me2-tri path.d { fill: none; stroke-width: 2; }
.me2-tri text { font-size: 12px; fill: var(--ink-2); font-weight: 600; }
.me2-tri text.g { fill: var(--brand); font-weight: 800; }
/* unit price packs */
.me2-pack { display: grid; gap: 6px; }
.me2-pr { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 8px; }
.me2-pr .fld-label { font-size: .78rem; }
/* shopping list */
.me2-sl { display: grid; gap: 16px; }
.me2-sladd { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, .8fr) minmax(0, 1fr) minmax(0, 1.2fr) auto; gap: 8px; align-items: end; }
.me2-sladd .btn { height: 46px; }
.me2-items { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.me2-items li { display: grid; grid-template-columns: minmax(0, 1fr) 64px minmax(70px, auto) minmax(64px, auto) 32px; gap: 8px; align-items: center; padding: 8px 10px; border-radius: 12px; background: var(--surface-2); }
.me2-items li.done .me2-ck span, .me2-items li.done b { text-decoration: line-through; color: var(--muted); }
.me2-items li small { color: var(--muted); font-size: .82rem; }
.me2-items li b { text-align: right; font-variant-numeric: tabular-nums; }
.me2-items li.me2-empty { display: block; background: none; color: var(--muted); }
.me2-ck { display: flex; align-items: center; gap: 10px; min-width: 0; cursor: pointer; font-weight: 600; }
.me2-ck span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.me2-ck input { width: 18px; height: 18px; accent-color: var(--brand); flex: none; }
.me2-q { width: 100%; padding: 6px; border: 1px solid var(--border); border-radius: 8px; font: inherit; text-align: center; background: var(--surface); }
.me2-del { border: 0; background: none; color: var(--muted); cursor: pointer; width: 32px; height: 32px; border-radius: 8px; }
.me2-del:hover { background: var(--surface); color: var(--brand); }
@media (max-width: 640px) {
  .me2-sladd { grid-template-columns: 1fr 1fr; }
  .me2-sladd .fld:first-child { grid-column: 1 / -1; }
  .me2-sladd .btn { grid-column: 1 / -1; justify-content: center; }
  .me2-items li { grid-template-columns: minmax(0, 1fr) 56px 64px 28px; }
  .me2-items li small { display: none; }
}
/* typing test */
.me2-ty { display: grid; gap: 14px; }
.me2-tybar { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 12px; }
.me2-live { display: flex; gap: 16px; color: var(--muted); font-size: .85rem; }
.me2-live b { font-size: 1.3rem; color: var(--ink); margin-right: 4px; font-variant-numeric: tabular-nums; }
.me2-pass { max-height: 190px; overflow: auto; padding: 16px 18px; border-radius: 16px; background: var(--surface-2); font-size: 1.15rem; line-height: 1.75; color: var(--muted); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; position: relative; }
.me2-pass .ok { color: var(--ink); }
.me2-pass .bad { color: #b91c1c; background: #fee2e2; border-radius: 3px; }
.me2-pass .cur { border-left: 2px solid var(--brand); margin-left: -2px; animation: me2-blink 1s step-end infinite; }
@keyframes me2-blink { 50% { border-color: transparent; } }
#me2-ty-in { width: 100%; padding: 12px 14px; border: 1.5px solid var(--border); border-radius: 14px; font: inherit; font-size: 1.05rem; resize: vertical; background: var(--surface); }
#me2-ty-in:focus { outline: none; border-color: var(--brand); }
#me2-res:empty { display: none; }
#me2-res { display: grid; gap: 12px; }
@media (prefers-reduced-motion: reduce) { .me2-pass .cur { animation: none; } }