/* calc_fee.css */
body {
  font-family: 'Segoe UI', '微軟正黑體', Arial, sans-serif;
  background: #f7f7fa;
  margin: 0;
  padding: 0;
}
#author-signature {
  display: block;
  margin: 0 auto 18px auto;
  color: #7a5600;
  font-size: 16px;
  font-family: 'Segoe UI', '微軟正黑體', Arial, sans-serif;
  font-weight: bold;
  background: linear-gradient(90deg, #ffe082 0%, #fffde7 100%);
  border: 2.5px solid #ffd600;
  border-radius: 12px 0 12px 0;
  padding: 7px 24px;
  box-shadow: 0 2px 10px #ffe08288, 0 0 0 3px #fff2;
  letter-spacing: 1.5px;
  pointer-events: none;
  user-select: none;
  opacity: 0.98;
  z-index: 10;
  min-width: 220px;
  width: fit-content;
}
.container {
  max-width: 420px;
  margin: 40px auto;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
  padding: 32px 28px 24px 28px;
  position: relative;
}
h2 {
  text-align: center;
  color: #3a3a3a;
  margin-bottom: 24px;
}
label {
  color: #444;
  font-size: 15px;
}
input[type="number"] {
  width: 120px;
  padding: 4px 8px;
  font-size: 15px;
  border: 1px solid #ccc;
  border-radius: 5px;
  margin: 4px 0 8px 0;
  background: #f9f9f9;
}
button {
  background: #4a90e2;
  color: #fff;
  border: none;
  border-radius: 5px;
  padding: 6px 18px;
  font-size: 15px;
  cursor: pointer;
  margin-left: 8px;
  margin-top: 4px;
}
button:hover {
  background: #357abd;
}
hr {
  margin: 24px 0 16px 0;
  border: none;
  border-top: 1px solid #eee;
}
.radio-group, .format-group {
  margin: 8px 0 12px 0;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.radio-group label, .format-group label {
  margin-right: 8px;
  font-size: 15px;
}
.coupon-row {
  display: flex;
  align-items: center;
  margin-bottom: 6px;
}
.coupon-row input[type="number"] {
  width: 80px;
  margin-left: 6px;
}
.coupon-row span {
  color: #888;
  font-size: 14px;
  margin-left: 4px;
}
#result {
  background: #f2f6fa;
  border-radius: 6px;
  padding: 12px 14px;
  margin-bottom: 10px;
  font-size: 15px;
  color: #2a2a2a;
}
#recommend {
  font-size: 15px;
  font-weight: bold;
  margin-top: 8px;
}
/* 手機RWD */
@media (max-width: 600px) {
  .container {
    max-width: 99vw;
    padding: 8px 2vw 12px 2vw;
  }
  h2 {
    font-size: 1.1em;
  }
  #author-signature {
    font-size: 13px;
    padding: 5px 8px;
    min-width: 120px;
  }
  input[type="number"] {
    font-size: 1em;
    padding: 7px 6px;
    max-width: 98vw;
  }
  button {
    font-size: 1em;
    padding: 8px 8px;
    max-width: 98vw;
  }
  .coupon-row input[type="number"] {
    width: 70px;
  }
  .coupon-row label {
    font-size: 0.98em;
  }
  .radio-group, .format-group {
    gap: 6px;
  }
}