* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: #f5f5f5;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
}
.login-card {
  width: 100%;
  max-width: 420px;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
  padding: 48px 40px 40px;
}
.login-title {
  font-size: 26px;
  font-weight: 700;
  color: #1a1a1a;
  text-align: center;
  margin-bottom: 8px;
}
.login-subtitle {
  font-size: 14px;
  color: #999;
  text-align: center;
  margin-bottom: 36px;
}
.login-subtitle a {
  color: #999;
  text-decoration: none;
}
.login-subtitle a:hover {
  color: #e23e1d;
}
.form-group {
  margin-bottom: 22px;
}
.form-group label {
  display: block;
  font-size: 14px;
  color: #333;
  margin-bottom: 8px;
  font-weight: 500;
}
.form-group label span {
  color: #e23e1d;
}
.form-group input[type="text"],
.form-group input[type="password"] {
  width: 100%;
  height: 46px;
  padding: 0 14px;
  border: 1px solid #e0e0e0;
  border-radius: 6px;
  font-size: 14px;
  color: #333;
  outline: none;
  transition: border-color 0.2s;
}
.form-group input[type="text"]:focus,
.form-group input[type="password"]:focus {
  border-color: #e23e1d;
}
.captcha-row {
  display: flex;
  gap: 10px;
}
.captcha-row input {
  flex: 1;
}
.captcha-row img {
  height: 46px;
  border-radius: 6px;
  cursor: pointer;
  border: 1px solid #e0e0e0;
}
.form-options {
  margin-bottom: 24px;
  font-size: 13px;
}
.agree-check {
  display: flex;
  align-items: flex-start;
  gap: 6px;
  color: #666;
  cursor: pointer;
}
.agree-check input[type="checkbox"] {
  accent-color: #e23e1d;
  margin-top: 2px;
  flex-shrink: 0;
}
.agree-check a {
  color: #e23e1d;
  text-decoration: none;
}
.agree-check a:hover {
  text-decoration: underline;
}
.btn-login {
  width: 100%;
  height: 46px;
  border: 2px solid #e23e1d;
  background: #e23e1d;
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
  letter-spacing: 4px;
}
.btn-login:hover {
  background: #c93518;
  border-color: #c93518;
}
.divider {
  display: flex;
  align-items: center;
  margin: 28px 0 20px;
}
.divider-line {
  flex: 1;
  height: 1px;
  background: #e8e8e8;
}
.divider-text {
  padding: 0 16px;
  font-size: 13px;
  color: #999;
  white-space: nowrap;
}
.signup-link {
  text-align: center;
}
.signup-link a {
  display: inline-block;
  width: 100%;
  height: 46px;
  line-height: 46px;
  border: 2px solid #e23e1d;
  color: #e23e1d;
  font-size: 15px;
  font-weight: 600;
  border-radius: 6px;
  text-decoration: none;
  transition: all 0.2s;
}
.signup-link a:hover {
  background: #e23e1d;
  color: #fff;
}