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var(--color-border)}.btn.success{background:var(--color-success)}.btn.danger{background:var(--color-danger)}.morse-output{background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:var(--space-md);font-family:var(--font-mono);min-height:60px;word-break:break-all;color:var(--color-accent-2);font-size:1.1rem}figure{margin:var(--space-lg) 0;text-align:center}figure img{max-width:100%;border-radius:var(--radius-lg);border:1px solid var(--color-border);box-shadow:var(--shadow-md)}figcaption{margin-top:var(--space-sm);color:var(--color-text-muted);font-size:.85rem;font-style:italic}.toc{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--space-md) var(--space-lg);margin:var(--space-lg) 0}.toc-title{font-weight:600;color:var(--color-accent);margin-bottom:var(--space-sm)}.toc ol{margin-left:var(--space-md)}.toc a{color:var(--color-text-muted);text-decoration:none;transition:color var(--duration-fast)}.toc a:hover{color:var(--color-accent)}.footer{border-top:1px solid var(--color-border);padding:var(--space-xl) var(--space-lg);text-align:center;color:var(--color-text-muted);font-size:.85rem;margin-top:var(--space-2xl)}@media print{body{background:#fff;color:#000}.topbar,.level-tabs,.speak-btn,.flashcard-controls,.quiz-options,.morse-tool,.footer{display:none!important}.hero{padding:var(--space-md) 0;border:none}.hero 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section.lesson ul,.rtl section.lesson ol{margin-right:var(--space-lg);margin-left:0}.rtl .callout{border-left:none;border-right:4px solid var(--color-accent);border-radius:var(--radius-md) 0 0 var(--radius-md)}.rtl .callout.tip{border-right-color:var(--color-success)}.rtl .callout.warn{border-right-color:var(--color-warning)}.rtl .callout.danger{border-right-color:var(--color-danger)}.rtl .callout.note{border-right-color:var(--color-purple)}.script-lg{font-family:Amiri,Noto Naskh Arabic,Scheherazade New,Noto Sans Egyptian Hieroglyphs,Noto Sans Cuneiform,Noto Sans Phoenician,Noto Sans Cherokee,serif;font-size:2.2rem;line-height:1.6}.devanagari{font-family:Noto Sans Devanagari,Mangal,serif;font-size:1.3rem;line-height:1.7}.devanagari-lg{font-family:Noto Sans Devanagari,Mangal,serif;font-size:2rem;line-height:1.7}.japanese{font-family:Noto Sans JP,Hiragino Sans,Yu Gothic,Meiryo,sans-serif;font-size:1.25rem;line-height:1.7}.japanese-lg{font-family:Noto Sans JP,Hiragino Sans,Yu Gothic,Meiryo,sans-serif;font-size:2rem;line-height:1.6;font-weight:500}.thai{font-family:Noto Sans Thai,Sarabun,Leelawadee UI,sans-serif;font-size:1.3rem;line-height:1.9}.thai-lg{font-family:Noto Sans Thai,Sarabun,Leelawadee UI,sans-serif;font-size:2rem;line-height:1.9}.tone-1{color:#1f6feb}.tone-2{color:#d29922}.tone-3{color:#db61a2}.tone-4{color:#f85149}.tone-5{color:#3fb950}pre.code{background:var(--color-surface-2, #161b22);color:var(--color-text-on-dark, #e6edf3);font-family:var(--font-mono);font-size:.92rem;line-height:1.55;padding:var(--space-md);border-radius:var(--radius-md);border-left:3px solid var(--card-color, #3fb950);overflow-x:auto;margin:var(--space-md) 0;tab-size:2;white-space:pre}pre.code .kw{color:#ff7b72}pre.code .str{color:#a5d6ff}pre.code .num{color:#79c0ff}pre.code .cmt{color:#8b949e;font-style:italic}pre.code .fn{color:#d2a8ff}pre.code .type,pre.code .var{color:#ffa657}code.inline{font-family:var(--font-mono);background:#6e768126;padding:1px 6px;border-radius:4px;font-size:.92em}:root.light pre.code{background:#f6f8fa;color:#1f2328}:root.light pre.code .kw{color:#cf222e}:root.light pre.code .str{color:#0a3069}:root.light pre.code .num{color:#0550ae}:root.light pre.code .cmt{color:#6e7781}:root.light pre.code .fn{color:#8250df}:root.light pre.code .type{color:#953800}:root.light pre.code .var{color:#953800}.site-footer{padding:var(--space-md, 1rem);text-align:center;font-size:.875rem;color:var(--color-text-muted, #888);border-top:1px solid var(--color-border, rgba(255,255,255,.08));margin-top:var(--space-lg, 2rem)}.site-footer a{color:var(--color-accent, #58a6ff);text-decoration:none;font-weight:600}.site-footer a:hover{text-decoration:underline}