:root{--color-text-primary:#333;--color-text-secondary:#666;--color-text-tertiary:#999;--color-background:#fefefe;--color-background-secondary:#f8f8f8;--color-background-tertiary:#f0f0f0;--color-accent:#333;--color-accent-light:#f5f5f5;--color-border:#ddd;--color-border-subtle:#eee;--color-success:#333;--color-overlay:rgba(51, 51, 51, 0.5);--color-link:#0066cc;--color-link-hover:#0044aa;--color-error-bg:#ffebee;--color-error-border:#ef5350;--color-error-text:#c62828;--color-player-bg:#1a1a1a;--color-player-bar:#444;--color-player-fill:#fff;--color-video-bg:#000;--color-modal-bg:#ffffff;--color-modal-overlay:rgba(0, 0, 0, 0.6);--color-header-bg:#ffffff;--color-footer-bg:#ffffff;--color-sidebar-bg:#f5f5f5;--color-image-border:transparent;--color-image-bg:transparent;--font-mono:'Courier New',Courier,monospace;--font-serif:'Literata','Times New Roman',Times,Georgia,serif;--font-sans:'Courier New',Courier,monospace;--font-size-xs:0.8125rem;--font-size-sm:0.875rem;--font-size-base:1rem;--font-size-md:1.125rem;--font-size-lg:1.375rem;--font-size-reader-small:0.875rem;--font-size-reader-medium:1rem;--font-size-reader-large:1.25rem;--font-size-reader:var(--font-size-reader-medium);--font-size-xl:1.75rem;--font-size-2xl:2.25rem;--font-size-3xl:3rem;--line-height-tight:1.2;--line-height-normal:1.5;--line-height-relaxed:1.6;--letter-spacing-tight:1px;--letter-spacing-normal:2px;--letter-spacing-wide:3px;--space-xs:0.25rem;--space-sm:0.5rem;--space-md:1rem;--space-lg:1.25rem;--space-xl:2rem;--space-2xl:2.5rem;--space-3xl:3.75rem;--max-width-reader:800px;--padding-mobile:1.25rem;--padding-tablet:2.5rem;--breakpoint-sm:600px;--breakpoint-md:768px;--breakpoint-lg:1024px;--shadow-sm:none;--shadow-md:0 2px 4px rgba(0, 0, 0, 0.05);--shadow-lg:0 4px 8px rgba(0, 0, 0, 0.08);--transition-fast:150ms ease;--transition-normal:300ms ease;--transition-slow:500ms ease;--z-header:100;--z-nav-footer:90;--z-progress-bar:95;--z-sidebar:200;--z-overlay:150;--min-touch-target:44px;--header-height-desktop:69px;--header-height-mobile:64px;--transition-modal:0.3s cubic-bezier(0.4, 0, 0.2, 1)}[data-theme=dark]{--color-text-primary:#e0e0e0;--color-text-secondary:#aaaaaa;--color-text-tertiary:#777777;--color-background:#1a1a1a;--color-background-secondary:#242424;--color-background-tertiary:#2e2e2e;--color-accent:#e0e0e0;--color-accent-light:#333333;--color-border:#444444;--color-border-subtle:#333333;--color-overlay:rgba(0, 0, 0, 0.7);--color-link:#6db3f2;--color-link-hover:#9dcbf7;--color-error-bg:#3d2020;--color-error-border:#ef5350;--color-error-text:#ff8a80;--color-player-bg:#1a1a1a;--color-player-bar:#444;--color-player-fill:#fff;--color-video-bg:#000;--color-modal-bg:#242424;--color-modal-overlay:rgba(0, 0, 0, 0.85);--color-header-bg:#1f1f1f;--color-footer-bg:#1f1f1f;--color-sidebar-bg:#222222;--color-image-border:#444444;--color-image-bg:#242424}body.font-small{--font-size-reader:var(--font-size-reader-small)}body.font-medium{--font-size-reader:var(--font-size-reader-medium)}body.font-large{--font-size-reader:var(--font-size-reader-large)}