.proof-sheet{position:relative;overflow:hidden;margin:1.2rem 0 1.4rem;padding:1.3rem 4.5rem 1.4rem 1.2rem;border:1px solid var(--line-dark);background:var(--paper-strong);box-shadow:inset 0 0 0 1px rgba(177,138,69,.18)}.proof-staff{position:absolute;inset:0;opacity:.08;background:repeating-linear-gradient(to bottom,transparent 0 18px,var(--ink) 18px 19px,transparent 19px 24px);pointer-events:none}.proof-category{position:relative;margin:0 0 .75rem;color:var(--primary-text);font:800 .72rem/1 var(--font-mono);letter-spacing:.12em;text-transform:uppercase}.term-strip{position:relative;display:flex;flex-wrap:wrap;gap:.32rem;align-items:end;min-height:72px;padding:.8rem 0}.term-tile{display:inline-grid;min-width:2.05rem;height:2.85rem;place-items:center;border-bottom:2px solid var(--ink);color:var(--muted);font:500 1.55rem/1 var(--font-display);transition:color .16s ease,transform .16s ease}.term-tile.is-inked{color:var(--ink);transform:translateY(-2px)}.term-space{display:inline-block;min-width:.7rem}.proof-clue{position:relative;max-width:700px;margin:.6rem 0 0;color:var(--muted-strong);line-height:1.55}.proof-margin{position:absolute;right:1rem;top:1rem;bottom:1rem;width:2.35rem;border-left:1px solid var(--line);display:grid;grid-template-rows:repeat(6,1fr);place-items:center}.proof-margin span{color:var(--line-dark);font:700 1.25rem var(--font-display);transform:rotate(-12deg)}.proof-margin span.is-used{color:var(--primary);font-size:1.55rem}.term-keyboard{display:grid;grid-template-columns:repeat(13,minmax(0,1fr));gap:.35rem}.term-keyboard button{min-height:42px;border:1px solid var(--line-dark);background:var(--surface);font:700 .9rem var(--font-mono);cursor:pointer}.term-keyboard button:not(:disabled):hover{background:var(--surface-muted)}.term-keyboard button.is-correct{background:#e2eee8;border-color:var(--success)}.term-keyboard button.is-wrong{background:#f5dfdc;border-color:var(--danger)}.term-keyboard button:disabled{opacity:.62;cursor:default}.term-result{margin-top:1rem;padding:1rem 1.1rem;border-left:4px solid var(--line-dark);background:var(--surface-muted)}.term-result.is-correct{border-color:var(--success)}.term-result.is-wrong{border-color:var(--primary)}.term-result p{margin:.25rem 0 .7rem;line-height:1.5}.composer-stage{position:relative;overflow:hidden;max-width:680px;margin:1rem auto;border:1px solid var(--line-dark);background:#1a1917;aspect-ratio:4/5}.composer-stage img{display:block;width:100%;height:100%;object-fit:cover;object-position:center 20%;filter:sepia(.12) contrast(1.03)}.composer-mask{position:absolute;inset:0;display:grid;grid-template-columns:repeat(6,1fr);grid-template-rows:repeat(6,1fr);pointer-events:none}.composer-mask span{background:var(--ink);border:.5px solid rgba(250,247,239,.08);transition:opacity .3s ease,transform .3s ease}.composer-mask span.is-open{opacity:0;transform:scale(.94)}.composer-progress{height:5px;background:var(--surface-muted);margin:.75rem 0 1.2rem}.composer-progress>span{display:block;height:100%;background:var(--primary);transition:width .2s ease}.composer-actions{display:flex;flex-wrap:wrap;gap:.65rem;align-items:center;margin:1rem 0}.composer-choice-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.65rem;margin:1rem 0}.composer-choice-grid button{min-height:56px;padding:.75rem 1rem;border:1px solid var(--line-dark);background:var(--paper-strong);font:600 1rem var(--font-body);text-align:left}.composer-choice-grid button:not(:disabled):hover{background:var(--surface-muted)}.composer-choice-grid button.is-correct{border-color:var(--success);background:#e2eee8}.composer-choice-grid button.is-wrong{border-color:var(--danger);background:#f5dfdc}.composer-choice-grid button:disabled{cursor:default}.composer-license{margin-top:.8rem;color:var(--muted);font-size:.78rem;line-height:1.45}.composer-license a{color:var(--primary-text)}.composer-loading{display:grid;gap:1rem;min-height:420px;place-items:center;align-content:center;padding:2rem;border:1px solid var(--line-dark);background:var(--surface-muted);color:var(--muted-strong);text-align:center}@media(max-width:760px){.term-keyboard{grid-template-columns:repeat(7,1fr)}.proof-sheet{padding-right:3.4rem}.term-tile{min-width:1.7rem;height:2.5rem;font-size:1.3rem}.composer-choice-grid{grid-template-columns:1fr}}