:root{--color-text: #1f2328;--color-bg: #ffffff;--color-border: #d0d7de;--color-primary: #0b57d0;--color-on-primary: #ffffff;--color-danger: #b42318;--color-focus: #0b57d0;--color-muted-bg: #f3f4f6;--color-muted-text: #4b5563;--color-hover-bg: #e8f0fe;--color-warning-bg: #fef3c7;--color-warning-text: #7a3e00;color:var(--color-text);background:var(--color-bg);font-family:system-ui,-apple-system,Segoe UI,Noto Sans TC,PingFang TC,sans-serif;line-height:1.5}body{margin:0}button{font:inherit;padding:.5rem 1rem;border:1px solid var(--color-border);border-radius:.375rem;background:var(--color-bg);color:var(--color-text);cursor:pointer}button.primary{border-color:var(--color-primary);background:var(--color-primary);color:var(--color-on-primary)}:focus-visible{outline:3px solid var(--color-focus);outline-offset:2px}.visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}