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\n\n=== CSS ===\n' + css, meta: dir + ' 三角 ' + size + 'px' };
}
form.addEventListener('submit', function(e) {
e.preventDefault();
btnMain.disabled = true; var origLabel = btnMain.textContent; btnMain.textContent = '处理中…';
errorMsg.classList.remove('show'); resultArea.classList.remove('show');
try {
var out = runTool();
showResult(out.result, out.meta);
} catch (err) {
showError('错误：' + err.message);
}
btnMain.disabled = false; btnMain.textContent = origLabel;
});
btnClear.addEventListener('click', function() {
form.reset();
resultArea.classList.remove('show');
errorMsg.classList.remove('show');
});
})();'''