/* --- 容器卡片样式 --- */
.form-card {
  background: #ffffff;
  padding: clamp(18px, 2.5vw, 40px);
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

/* --- 表单标签风格 --- */
.field-label {
  font-size: 0.9rem;
  color: #444;
  font-weight: 600;
  margin-bottom: 8px;
  display: block;
}

.required-star {
  color: #dc3545;
  margin-left: 4px;
}

/* --- 输入框深度美化 --- */
.form-card .form-control,
.form-card .form-select {
  border-radius: 4px;
  border: 1px solid #ced4da;
  font-size: 0.95rem;
  transition: all 0.2s ease;
}

.form-card .form-control:focus,
.form-card .form-select:focus {
  border-color: #0d6efd;
  box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.1);
  outline: none;
}

/* --- 提交按钮 --- */
.submit-btn {
  background: #0d6efd;
  color: #fff;
  border: none;
  padding: 12px clamp(18px, 4vw, 60px);
  font-size: 1.1rem;
  font-weight: 600;
  border-radius: 4px;
  transition: 0.3s;
  width: auto;
  min-width: 240px;
}

.submit-btn:hover {
  background: #0056b3;
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(13, 110, 253, 0.3);
}

.form-check-label {
  font-size: 0.9rem;
  color: #666;
  cursor: pointer;
}

/* 移动端间距微调 */
@media (max-width: 768px) {
  .form-card {
    padding: 25px 20px;
  }

  .submit-btn {
    width: 100%;
  }
}

/* ------------------------------------------------------------------
   A3 修正：原写法为  * { font-size: 1.4rem !important; }
   问题：① 通配符命中本页所有元素（含表单控件、图标字体、伪元素 content）
         ② !important 使 base.css 的 clamp() 字号体系在此断点全部失效
         ③ 本文件是「联系页」样式表，却影响整页所有区块
   现改为只放大本页正文容器，与 base.css:373 的 2700px 断点策略保持一致。
   ------------------------------------------------------------------ */
@media (min-width: 2700px) {
  .form-card {
    font-size: 1.4rem;
  }

  .form-card .field-label,
  .form-card .form-control,
  .form-card .form-select,
  .form-card .form-check-label {
    font-size: 1.25rem;
  }

  .submit-btn {
    font-size: 1.4rem;
  }
}