:root{--font-size-base: 24px;--font-size-lg: 32px;--font-size-sm: 18px;--font-size-xs: 14px;--color-ja: #1D4ED8;--color-ja-bg: #DBEAFE;--color-zh: #DC2626;--color-zh-bg: #FEE2E2;--color-bg: #F5F5F7;--color-surface: #FFFFFF;--color-text: #1A1A2E;--color-text-muted: #6B7280;--color-border: #E5E7EB;--radius: 16px;--spacing: 16px}*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body{font-family:-apple-system,BlinkMacSystemFont,Hiragino Sans,Noto Sans JP,Noto Sans TC,sans-serif;font-size:var(--font-size-base);color:var(--color-text);background:var(--color-bg);height:100%;overflow:hidden}#root{height:100%}button{font-family:inherit;border:none;cursor:pointer;touch-action:manipulation;-webkit-touch-callout:none;-webkit-user-select:none;user-select:none}