@import url("https://fonts.googleapis.com/css2?family=DM+Serif+Display&family=DM+Mono:wght@400;500&family=DM+Sans:wght@400;500&display=swap");:root{--ink:#14110E;--ink-soft:#4A4036;--ink-muted:#8E8272;--surface:#FAF7F2;--surface-alt:#F2EDE3;--cream:#F2EDE3;--border:#EBE4D6;--border-mid:#D9CFB9;--accent:#0E7C6B;--accent-soft:#D0EDE8;--on-accent:#FFFFFF;--teal:#1F9C86;--teal-soft:rgba(31,156,134,0.12);--coral:#D94545;--coral-soft:rgba(217,69,69,0.12);--amber:#D97706;--amber-soft:rgba(217,148,45,0.10);--danger:#C94B4B;--success:#2A7A4B;--surface-raised:#FFFFFF;--surface-code:#0f1115;--font-heading:"DM Serif Display",ui-serif,Georgia,serif;--font-body:"DM Sans",ui-sans-serif,system-ui,sans-serif;--font-mono:"DM Mono",ui-monospace,SFMono-Regular,Menlo,monospace;--radius-xs:4px;--radius-sm:6px;--radius-md:10px;--radius-lg:16px;--radius-xl:20px;--radius:10px}[data-primr-theme]{--lesson-surface-page:#ffffff;--lesson-surface-card:#ffffff;--lesson-surface-sunken:#f5f5f5;--lesson-surface-code:#0f1115;--lesson-divider:rgba(0,0,0,0.08);--lesson-ink-primary:#0f1115;--lesson-ink-secondary:#4a4f5a;--lesson-ink-muted:#8a8f99;--lesson-ink-inverse:#ffffff;--lesson-accent:#6c47ff;--lesson-accent-hover:#5a38e0;--lesson-accent-soft:rgba(108,71,255,0.12);--lesson-accent-ink:#ffffff;--lesson-correct:#1a9488;--lesson-correct-soft:rgba(26,148,136,0.12);--lesson-incorrect:#d94545;--lesson-incorrect-soft:rgba(217,69,69,0.12);--lesson-step-active:var(--lesson-accent);--lesson-step-complete:var(--lesson-correct);--lesson-step-pending:#d5d8de;--lesson-flashcard-front:var(--lesson-surface-card);--lesson-flashcard-back:var(--lesson-accent-soft);--lesson-highlight-info:rgba(108,71,255,0.08);--lesson-highlight-warn:rgba(217,148,45,0.10);--lesson-font-heading:"DM Serif Display",ui-serif,Georgia,serif;--lesson-font-body:"DM Sans",ui-sans-serif,system-ui,-apple-system,sans-serif;--lesson-font-mono:"DM Mono",ui-monospace,SFMono-Regular,Menlo,monospace;--lesson-radius-sm:6px;--lesson-radius-md:10px;--lesson-radius-lg:16px;--lesson-shadow-sm:0 1px 2px rgba(15,17,21,0.06);--lesson-shadow-md:0 4px 12px rgba(15,17,21,0.08);--lesson-shadow-lg:0 12px 32px rgba(15,17,21,0.10);--ink:var(--lesson-ink-primary);--ink-soft:var(--lesson-ink-secondary);--ink-muted:var(--lesson-ink-muted);--surface:var(--lesson-surface-card);--surface-alt:var(--lesson-surface-sunken);--surface-raised:var(--lesson-surface-card);--surface-code:var(--lesson-surface-code);--cream:var(--lesson-surface-sunken);--border:var(--lesson-divider);--border-mid:var(--lesson-divider);--accent:var(--lesson-accent);--accent-soft:var(--lesson-accent-soft);--on-accent:var(--lesson-accent-ink);--teal:var(--lesson-correct);--teal-soft:var(--lesson-correct-soft);--coral:var(--lesson-incorrect);--coral-soft:var(--lesson-incorrect-soft);--green:var(--lesson-correct);--amber:#D97706;--amber-soft:var(--lesson-highlight-warn);--font-heading:var(--lesson-font-heading);--font-body:var(--lesson-font-body);--font-mono:var(--lesson-font-mono);--radius-sm:var(--lesson-radius-sm);--radius-md:var(--lesson-radius-md);--radius-lg:var(--lesson-radius-lg);--radius:var(--lesson-radius-md)}[data-primr-theme=primr-dark]{--lesson-surface-page:#1a1c28;--lesson-surface-card:#22243048;--lesson-surface-sunken:#141520;--lesson-surface-code:#0d0f18;--lesson-divider:rgba(255,255,255,0.08);--lesson-ink-primary:#edeef5;--lesson-ink-secondary:#b0b3c8;--lesson-ink-muted:#6b6e85;--lesson-ink-inverse:#0f1117;--lesson-accent:#8a78ff;--lesson-accent-hover:#9d8dff;--lesson-accent-soft:rgba(138,120,255,0.18);--lesson-accent-ink:#ffffff;--lesson-correct:#34c9a2;--lesson-correct-soft:rgba(52,201,162,0.18);--lesson-incorrect:#ff6a6a;--lesson-incorrect-soft:rgba(255,106,106,0.18);--lesson-step-pending:#3a3d50;--lesson-flashcard-back:rgba(138,120,255,0.14);--lesson-highlight-info:rgba(138,120,255,0.10);--lesson-highlight-warn:rgba(255,180,80,0.14);--lesson-shadow-sm:0 1px 2px rgba(0,0,0,0.30);--lesson-shadow-md:0 4px 12px rgba(0,0,0,0.36);--lesson-shadow-lg:0 12px 32px rgba(0,0,0,0.44)}html[data-primr-theme=primr-dark]{--surface:var(--lesson-surface-page);--surface-alt:var(--lesson-surface-sunken);--surface-raised:#2a2c3a;--cream:var(--lesson-surface-sunken);--border:rgba(255,255,255,0.10);--border-mid:rgba(255,255,255,0.18)}html[data-primr-theme=primr-dark] img[src$="/brand/logo-wordmark.svg"]{content:url(/brand/logo-wordmark-dark.svg)}*,:after,:before{box-sizing:border-box}body{margin:0;font-family:DM Sans,system-ui,sans-serif;background:var(--surface);color:var(--ink);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}