:root{--bg:#f4f6f5;--surface:#fcfdfc;--text:#1d2925;--muted:#52615b;--line:#d5ded9;--accent:#205f49;--soft:#e7f0eb;--error:#a12929;color-scheme:light dark;font-family:system-ui,-apple-system,BlinkMacSystemFont,"PingFang TC","Microsoft JhengHei",sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);line-height:1.6}button,input,a{font:inherit}button,a.file-button,.file-button,.download{white-space:nowrap}button,.file-button,.download{border:1px solid var(--line);border-radius:8px;padding:10px 16px;background:var(--surface);color:var(--text);cursor:pointer;text-decoration:none;min-height:44px}button:hover,.file-button:hover{background:var(--soft)}button:active,.file-button:active{transform:scale(.98)}button:disabled{opacity:.5;cursor:not-allowed}button.primary{background:var(--accent);color:#fff;border-color:var(--accent);font-weight:650}.quiet{border:0;background:transparent;padding:6px 12px}a{color:var(--accent)}:focus-visible{outline:3px solid 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