* {
  margin: 0;
  padding: 0;
}

body {
  background-color: #f1f2f3;
}

.container {
  box-sizing: border-box;
  width: 100%;
  max-width: 1560px;
  min-width: 1240px;
  margin: 20px auto;
  color: #333;
}

.container * {
  box-sizing: border-box;
}

header {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin-bottom: 25px;
}

header h1 {
  font-size: 2.2rem;
  margin-bottom: 10px;
}

header p {
  font-size: 1rem;
  opacity: 0.9;
}

.content {
  display: flex;
  gap: 20px;
  margin-bottom: 25px;
}

.input-section,.result-section  {
  flex: 1;
  background: #fff;
  border-radius: 12px;
  padding: 20px;
}

.section-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  margin-bottom: 20px;
  color: #2c3e50;
}

.input-group {
  margin-bottom: 20px;
}

label {
  display: block;
  margin-bottom: 6px;
  font-weight: 600;
  font-size: 15px;
  color: #2c3e50;
}

input {
  width: 100%;
  padding: 11px 16px;
  border: 1px solid #d1d9e6;
  border-radius: 8px;
  font-size: 15px;
  transition: all 0.3s;
}

input:focus {
  outline: none;
  border-color: #4a90e2;
  box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.2);
}

.input-hint {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 14px;
  color: #7f8c8d;
  margin-top: 6px;
}

.input-hint span{
  font-weight: 600;
  color: #1a89c6;
  margin-left: 10px;
}

.button-group {
  display: flex;
  gap: 15px;
  margin-top: 10px;
  flex-wrap: wrap;
}

button {
  flex: 1;
  padding: 14px;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.evaluate-btn {
  background: #4a90e2;
  color: white;
}

.evaluate-btn:hover {
  background: #3a7bc8;
}

.example-btn {
  background: #f5f7fa;
  color: #4a90e2;
  border: 1px solid #d1d9e6;
}

.example-btn:hover {
  background: #eaeef5;
}

.copy-btn {
  background: #27ae60;
  color: white;
}

.copy-btn:hover {
  background: #219653;
}

.clear-btn {
  background: #e74c3c;
  color: white;
}

.clear-btn:hover {
  background: #c0392b;
}

.result-item {
  background: white;
  border-radius: 10px;
  padding: 15px;
  margin-bottom: 20px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  border: 1px solid #eee;
  border-left: 4px solid #4a90e2;
}

.result-title {
  font-size: 15px;
  color: #7f8c8d;
  margin-bottom: 10px;
}

.result-value {
  line-height: 1.4;
  font-size: 28px;
  font-weight: 700;
  color: #2c3e50;
}

.result-value.important {
  color: #e74c3c;
  font-size: 32px;
}

h3 {
  font-size: 20px;
  margin-bottom: 15px;
  color: #2c3e50;
  display: flex;
  align-items: center;
  gap: 10px;
}

.explanation-content {
  padding-left: 5px;
}

ul {
  padding-left: 25px;
  margin: 15px 0;
}

li {
  margin-top: 10px;
}

.explanation {
  background: white;
  border-radius: 10px;
  padding: 15px;
}

.result-section .explanation{
  background: #e9fcf1;
  border: 1px solid #eee;
}
.result-section .explanation ul{
  margin: 0;
}

.notice {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.85);
  color: white;
  padding: 15px 30px;
  border-radius: 8px;
  font-size: 16px;
  z-index: 1000;
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
}

.notice.show {
  opacity: 1;
}

footer {
  text-align: center;
  color: #7f8c8d;
  font-size: 14px;
}

.features {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin: 25px auto;
  flex-wrap: wrap;
}

.feature-card {
  flex: 1;
  background: white;
  border-radius: 10px;
  padding: 20px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  text-align: center;
}

.feature-icon {
  font-size: 36px;
  margin-bottom: 15px;
}

.feature-title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 10px;
  color: #2c3e50;
}