:root{--color-primary:#4f46e5;--color-primary-hover:#4338ca;--color-primary-light:#4f46e51a;--color-text:#1f2937;--color-text-secondary:#6b7280;--color-text-muted:#9ca3af;--color-bg:#fff;--color-bg-secondary:#f9fafb;--color-bg-hover:#f3f4f6;--color-border:#e5e7eb;--color-danger:#ef4444;--color-danger-hover:#dc2626;--font-sans:system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", sans-serif;--font-serif:"Songti SC", "Noto Serif SC", "Source Han Serif SC", Georgia, serif;--font-mono:"JetBrains Mono", "Fira Code", ui-monospace, Consolas, monospace;--space-xs:4px;--space-sm:8px;--space-md:16px;--space-lg:24px;--space-xl:32px;--space-2xl:48px;--radius-sm:4px;--radius-md:8px;--radius-lg:12px;--radius-full:9999px;--shadow-sm:0 1px 2px #0000000d;--shadow-md:0 4px 6px -1px #0000001a, 0 2px 4px -2px #0000001a;--shadow-lg:0 10px 15px -3px #0000001a, 0 4px 6px -4px #0000001a;--transition-fast:.15s ease;--transition-normal:.25s ease;--sidebar-width:320px;--reader-max-width:720px;--toolbar-height:56px}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-size:16px}body{font-family:var(--font-sans);color:var(--color-text);background:var(--color-bg);min-height:100vh;line-height:1.5}#app{flex-direction:column;min-height:100vh;display:flex}a{color:var(--color-primary);text-decoration:none}a:hover{text-decoration:underline}button{cursor:pointer;font-family:inherit;font-size:inherit}img{max-width:100%;height:auto}input,textarea{font-family:inherit;font-size:inherit}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border-width:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.reader-theme-light{--reader-bg:#fff;--reader-text:#333;--reader-link:#1a73e8;--reader-selection:#4f46e533}.reader-theme-eye-care{--reader-bg:#c7edcc;--reader-text:#333;--reader-link:#1a73e8;--reader-selection:#4f46e533}.reader-theme-dark{--reader-bg:#1a1a1a;--reader-text:#ccc;--reader-link:#66b3ff;--reader-selection:#4f46e566}.reader-theme-parchment{--reader-bg:#f5e6c8;--reader-text:#5c3d2e;--reader-link:#8b5e3c;--reader-selection:#8b5e3c33}