*{box-sizing:border-box;padding:0;margin:0}body,html{max-width:100vw;overflow-x:hidden}:root{--bg-primary:#ffffff;--bg-secondary:#f5f5f5;--text-primary:#1a1a1a;--text-secondary:#666666;--border-color:#e0e0e0;--card-bg:#ffffff;--shadow:rgba(0,0,0,0.1)}.dark{--bg-primary:#0a0a0a;--bg-secondary:#1a1a1a;--text-primary:#f5f5f5;--text-secondary:#a0a0a0;--border-color:#333333;--card-bg:#1a1a1a;--shadow:rgba(255,255,255,0.05)}body{font-family:system-ui,-apple-system,sans-serif;background-color:var(--bg-primary);color:var(--text-primary);transition:background-color .3s ease,color .3s ease}a{color:inherit;text-decoration:none}.theme-toggle{position:absolute;top:20px;right:20px;z-index:1000;background:var(--card-bg);border:1px solid var(--border-color);border-radius:4px;padding:8px 12px;display:flex;align-items:center;justify-content:center;font-size:12px;cursor:pointer;box-shadow:0 2px 8px var(--shadow);transition:transform .2s ease,box-shadow .2s ease}.theme-toggle:hover{transform:scale(1.1);box-shadow:0 4px 12px var(--shadow)}