:root {
  --primary: #E1251B;
  --primary-light: #FF6B5B;
  --primary-dark: #B01A12;
  --text-primary: #1a1a1a;
  --text-secondary: #666;
  --card-bg: #fff;
  --radius: 12px;
  --shadow: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", sans-serif;
  background: linear-gradient(135deg, #E1251B 0%, #FF6B5B 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-wrap {
  width: 100%;
  max-width: 380px;
  padding: 20px;
}

.login-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 40px 32px;
  text-align: center;
}

.login-logo {
  font-size: 48px;
  margin-bottom: 8px;
}

.login-card h1 {
  font-size: 24px;
  color: var(--text-primary);
  font-weight: 700;
  margin-bottom: 4px;
}

.login-subtitle {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 28px;
}

.form-group {
  text-align: left;
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 6px;
  font-weight: 500;
}

.form-group input {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid #e0e0e0;
  border-radius: 8px;
  font-size: 15px;
  transition: border-color 0.2s;
  outline: none;
}

.form-group input:focus {
  border-color: var(--primary);
}

.login-error {
  color: var(--primary);
  font-size: 13px;
  min-height: 18px;
  margin-bottom: 8px;
}

/* ===== 记住我 ===== */
.remember-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 4px;        /* 距登录按钮约 4px */
  text-align: left;
}
.remember-row input[type="checkbox"] {
  width: 16px;
  height: 16px;
  margin: 0;
  cursor: pointer;
  accent-color: var(--primary);   /* 红色主调勾选态（WebKit/WKWebView 支持） */
}
.remember-row label {
  font-size: 13px;
  color: var(--text-secondary);
  cursor: pointer;
  user-select: none;
}

.login-btn {
  width: 100%;
  padding: 12px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}

.login-btn:hover {
  background: var(--primary-dark);
}

.login-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Responsive */
@media (max-width: 480px) {
  .login-wrap { padding: 12px; }
  .login-card { padding: 28px 20px; border-radius: 16px; }
  .login-logo { font-size: 36px; }
  .login-card h1 { font-size: 20px; }
}