body {
  background: #f7f7fa;
  font-family: '微软雅黑', 'Arial', sans-serif;
  color: #222;
  margin: 0;
  padding: 0;
  text-align: center;
}
.container {
  margin: 40px auto 0;
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 2px 12px #0001;
  width: 380px;
  padding: 32px 18px 24px 18px;
}
.title {
  font-size: 22px;
  color: #1a73e8;
  margin-bottom: 18px;
  letter-spacing: 2px;
  font-weight: bold;
}
textarea {
  width: 100%;
  min-height: 60px;
  border-radius: 8px;
  border: 1px solid #e0e0e0;
  font-size: 16px;
  padding: 10px;
  margin-bottom: 14px;
  resize: vertical;
  box-sizing: border-box;
}
input[type="password"], input[type="text"] {
  width: 100%;
  font-size: 16px;
  border-radius: 8px;
  border: 1px solid #e0e0e0;
  padding: 10px;
  margin-bottom: 14px;
  box-sizing: border-box;
}
.btn {
  font-size: 16px;
  padding: 8px 28px;
  margin: 0 8px 10px 8px;
  border: none;
  border-radius: 6px;
  background: #e0e0e0;
  color: #222;
  cursor: pointer;
  transition: background 0.2s;
  outline: none;
}
.btn:disabled {
  background: #eee;
  color: #aaa;
  cursor: not-allowed;
}
.btn:hover:enabled {
  background: #bcdffb;
  color: #1a73e8;
}
.tips {
  font-size: 13px;
  color: #888;
  margin-top: 8px;
  min-height: 18px;
}