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var(--border);border-radius:var(--radius-sm);box-shadow:var(--shadow-sm);text-decoration:none;white-space:nowrap;transition:background .12s ease,border-color .12s ease,box-shadow .12s ease,transform .12s ease}.btn:hover:not(:disabled){background:var(--panel-soft);border-color:var(--text-faint);box-shadow:var(--shadow-md)}.btn:active:not(:disabled){transform:translateY(1px);box-shadow:none}.btn:disabled{opacity:.5;cursor:not-allowed;box-shadow:none;background:var(--panel);border-color:var(--border);color:var(--text-muted)}.btn[data-active=true]:not(:disabled),.btn--accent:not(:disabled){background:var(--accent);border-color:var(--accent-strong);color:var(--accent-ink)}.btn[data-active=true]:hover:not(:disabled),.btn--accent:hover:not(:disabled){background:var(--accent-strong);color:#fff}.btn--ghost{background:transparent;border-color:transparent;box-shadow:none}.btn--pill{border-radius:var(--radius-pill);padding:6px 16px}.btn--icon{width:34px;height:34px;padding:0;border-radius:var(--radius-pill);font-size:14px}.btn[aria-busy=true]{cursor:wait}.btn[aria-busy=true]:disabled{opacity:1;color:var(--text)}.btn--accent[aria-busy=true]:disabled,.btn[data-active=true][aria-busy=true]:disabled{background:var(--accent);border-color:var(--accent-strong);color:var(--accent-ink)}.btn[aria-busy=true]:after{content:"";flex:none;width:12px;height:12px;border:2px solid currentcolor;border-top-color:transparent;border-radius:50%;opacity:.8;animation:btn-spin .6s linear infinite}@keyframes btn-spin{to{transform:rotate(360deg)}}@media(prefers-reduced-motion:reduce){.btn[aria-busy=true]:after{animation-duration:2s}}.seg{display:inline-flex;flex-wrap:wrap;gap:2px;padding:3px;background:var(--panel2);border:1px solid var(--border);border-radius:var(--radius-pill)}.seg>button{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;font-size:12px;font-weight:700;color:var(--text-muted);background:transparent;border:0;border-radius:var(--radius-pill);white-space:nowrap;transition:color .12s ease,background .12s ease}.seg>button:hover:not([data-active=true]){color:var(--text);background:var(--panel)}.seg>button[data-active=true]{color:var(--accent-ink);background:var(--accent);box-shadow:var(--shadow-sm)}.input,select.input{width:100%;padding:8px 11px;font:inherit;font-size:13px;background:var(--panel);color:var(--text);border:1px solid var(--border);border-radius:var(--radius-sm);box-shadow:var(--shadow-sm) inset}.input:focus{border-color:var(--select-primary)}.eyebrow{font-size:11px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--text-muted)}.script{font-family:var(--font-name);font-weight:600}.muted{color:var(--text-muted)}.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums}.statGrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(100px,1fr));gap:1px;overflow:hidden;background:var(--border-soft);border:1px solid var(--border-soft);border-radius:var(--radius)}.statGrid--2{grid-template-columns:repeat(2,minmax(0,1fr))}.stat{display:grid;gap:1px;padding:11px 14px;background:var(--panel)}.statNum{font-family:var(--font-mono);font-size:19px;font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:-.02em;line-height:1.2}.statLabel{font-size:11px;font-weight:700;letter-spacing:.06em;color:var(--text-muted)}@media(max-width:640px){.statGrid{grid-template-columns:repeat(2,minmax(0,1fr))}}.meter{overflow:hidden;height:5px;background:color-mix(in srgb,var(--text) 16%,transparent);border-radius:var(--radius-pill)}.meter>span{display:block;height:100%;background:var(--accent);border-radius:inherit}.tag{display:inline-flex;align-items:center;gap:4px;padding:1px 8px;font-size:11px;font-weight:700;border-radius:var(--radius-pill);background:var(--panel2);color:var(--text-muted);border:1px solid var(--border)}.tag[data-difficulty=tutorial]{background:var(--panel2);color:var(--text-muted)}.tag[data-difficulty=easy]{background:var(--ok-bg);color:var(--ok);border-color:transparent}.tag[data-difficulty=medium]{background:var(--info-bg);color:var(--info);border-color:transparent}.tag[data-difficulty=hard]{background:var(--danger-bg);color:var(--danger);border-color:transparent}.tag[data-difficulty=expert]{background:var(--accent-bg);color:var(--accent-strong);border-color:transparent}.stack{display:flex;flex-direction:column;gap:12px}.row{display:flex;align-items:center;gap:10px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}:root[data-skin=cartoon] h1,:root[data-skin=cartoon] h2,:root[data-skin=cartoon] h3{font-family:var(--font-display);font-weight:700}:root[data-skin=cartoon] .card,:root[data-skin=cartoon] .paper,:root[data-skin=cartoon] .sheet,:root[data-skin=cartoon] .statGrid{border-width:2px;border-color:var(--sticker-line)}:root[data-skin=cartoon] .card,:root[data-skin=cartoon] .paper,:root[data-skin=cartoon] .sheet{box-shadow:var(--shadow-md)}:root[data-skin=cartoon] .btn,:root[data-skin=cartoon] .seg>button{font-family:var(--font-display);font-weight:700}:root[data-skin=cartoon] .btn{padding:8px 16px;border-width:2px;border-color:var(--sticker-line)}:root[data-skin=cartoon] .btn--icon{padding:0}:root[data-skin=cartoon] .btn:hover:not(:disabled){transform:translate(-1px,-1px);border-color:var(--sticker-line);box-shadow:var(--shadow-md)}:root[data-skin=cartoon] .btn:active:not(:disabled){transform:translate(2px,2px);box-shadow:none}:root[data-skin=cartoon] .btn--ghost{border-color:transparent}:root[data-skin=cartoon] .input,:root[data-skin=cartoon] select.input{border-width:2px;border-color:var(--sticker-line);box-shadow:none}:root[data-skin=cartoon] .seg,:root[data-skin=cartoon] .tag{border-width:2px;border-color:var(--sticker-line)}:root[data-skin=cartoon] .seg>button[data-active=true]{box-shadow:var(--shadow-sm)}:root[data-skin=cartoon] .stamp{border-width:3px}:root[data-skin=cartoon] .meter{height:10px;border:2px solid var(--sticker-line)}