:root{--primary-color:#63b3ed;--accent-color:#f56565;--bg-color:#0f172a;--surface-color:#1e293b;--text-color:#e2e8f0;--text-muted:#94a3b8;--border-color:#334155}body,html{background:var(--bg-color)!important;color:var(--text-color)!important;font-family:Helvetica Neue,Arial,Hiragino Kaku Gothic ProN,Hiragino Sans,Meiryo,sans-serif;line-height:1.6;margin:0;min-height:100vh;padding:0;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{color:inherit;text-decoration:none}button{font-family:inherit}