:root {
  --primary-color: #26A9E0; /* 淡蓝色 */
  --secondary-color: #FFFFFF; /* 白色 */
  --login-button-color: #EA7C07; /* 登录按钮橙色 */
  --text-dark: #333333;
  --text-light: #ffffff;
  --border-color: #e0e0e0;
  --background-light: #f9f9f9;
}

.page-login {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-dark); /* Default text color for light body background */
  background: var(--secondary-color); /* Default white background */
}

.page-login__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* HERO Banner Section - Visually appealing entry, not the homepage HERO */
.page-login__hero-banner {
  position: relative;
  text-align: center;
  padding: 80px 0 60px;
  background: linear-gradient(135deg, var(--primary-color) 0%, #aed8ee 100%); /* Lighter gradient for welcoming feel */
  color: var(--text-light);
  padding-top: var(--header-offset, 120px); /* Ensure space for fixed header */
}

.page-login__main-title {
  font-size: 44px;
  font-weight: bold;
  margin-bottom: 20px;
  color: var(--text-light);
  line-height: 1.2;
}

.page-login__intro-text {
  font-size: 20px;
  margin-bottom: 40px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  color: var(--text-light);
}

.page-login__login-form-wrapper {
  background: var(--secondary-color);
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
  padding: 40px;
  max-width: 500px;
  margin: 40px auto 0;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.page-login__login-banner-img {
  width: 100%;
  height: 450px; /* Fixed height for consistency */
  max-width: 100%;
  display: block;
  border-radius: 8px;
  margin-bottom: 30px;
  object-fit: cover;
}

.page-login__login-form {
  width: 100%;
}

.page-login__form-group {
  margin-bottom: 20px;
  text-align: left;
}

.page-login__form-label {
  display: block;
  font-size: 16px;
  margin-bottom: 8px;
  color: var(--text-dark);
  font-weight: 600;
}

.page-login__form-input {
  width: 100%;
  padding: 12px 15px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 16px;
  box-sizing: border-box;
  transition: border-color 0.3s ease;
}

.page-login__form-input:focus {
  border-color: var(--primary-color);
  outline: none;
  box-shadow: 0 0 0 3px rgba(38, 169, 224, 0.2);
}

.page-login__submit-button {
  width: 100%;
  padding: 15px 20px;
  background: var(--login-button-color); /* Orange for login button */
  color: var(--text-light);
  border: none;
  border-radius: 8px;
  font-size: 18px;
  font-weight: bold;
  cursor: pointer;
  transition: background-color 0.3s ease, transform 0.2s ease;
  margin-top: 10px;
  white-space: normal; /* Allow text wrapping */
  word-wrap: break-word; /* Allow text wrapping */
  box-sizing: border-box;
}

.page-login__submit-button:hover {
  background-color: #d16e07;
  transform: translateY(-1px);
}

.page-login__form-links {
  margin-top: 20px;
  display: flex;
  justify-content: space-between;
  font-size: 14px;
}

.page-login__forgot-password-link,
.page-login__register-link {
  color: var(--primary-color);
  text-decoration: none;
  transition: color 0.3s ease;
}

.page-login__forgot-password-link:hover,
.page-login__register-link:hover {
  color: #1a7bb0;
  text-decoration: underline;
}

/* General Section Styles */
.page-login__section {
  padding: 60px 0;
  background: var(--secondary-color);
}

.page-login__section:nth-of-type(even) {
  background: var(--background-light);
}

.page-login__section-title {
  font-size: 36px;
  font-weight: bold;
  text-align: center;
  margin-bottom: 20px;
  color: var(--text-dark);
}

.page-login__section-description {
  font-size: 18px;
  text-align: center;
  max-width: 800px;
  margin: 0 auto 40px;
  color: var(--text-dark);
}

/* Benefits Section */
.page-login__benefits-section {
  padding-top: 40px; /* Adjust padding for first section after hero banner */
}

.page-login__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.page-login__grid-item {
  background: var(--secondary-color);
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
  padding: 30px;
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-login__grid-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.page-login__grid-img {
  width: 100%;
  height: 250px; /* Fixed height for consistency */
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 20px;
  display: block; /* Ensure it behaves as a block element */
  max-width: 100%; /* Responsive image */
}

.page-login__grid-title {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 15px;
  color: var(--primary-color);
}

.page-login__grid-item p {
  font-size: 16px;
  color: var(--text-dark);
}

/* Security Section */
.page-login__security-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.page-login__security-item {
  background: var(--secondary-color);
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
  padding: 30px;
  text-align: center;
}

.page-login__security-img {
  width: 100%;
  height: 200px; /* Fixed height */
  object-fit: contain; /* Use contain for icons/illustrations */
  border-radius: 8px;
  margin-bottom: 20px;
  display: block;
  max-width: 100%;
}

.page-login__security-title {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 15px;
  color: var(--primary-color);
}

.page-login__security-item p {
  font-size: 16px;
  color: var(--text-dark);
}

/* Guide Section */
.page-login__guide-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-bottom: 50px;
}

.page-login__step-item {
  background: var(--secondary-color);
  border-left: 5px solid var(--primary-color);
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  padding: 25px;
}

.page-login__step-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--primary-color);
}

.page-login__step-item p {
  font-size: 16px;
  color: var(--text-dark);
}

.page-login__device-guide {
  background: var(--primary-color);
  color: var(--text-light);
  padding: 40px;
  border-radius: 12px;
  text-align: center;
  margin-bottom: 50px;
}

.page-login__device-title {
  font-size: 28px;
  font-weight: bold;
  margin-bottom: 15px;
  color: var(--text-light);
}

.page-login__device-guide p {
  font-size: 18px;
  margin-bottom: 30px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.page-login__btn-download {
  display: inline-block;
  padding: 15px 30px;
  background: var(--login-button-color);
  color: var(--text-light);
  text-decoration: none;
  border-radius: 8px;
  font-size: 18px;
  font-weight: bold;
  transition: background-color 0.3s ease, transform 0.2s ease;
  white-space: normal;
  word-wrap: break-word;
  box-sizing: border-box;
}

.page-login__btn-download:hover {
  background-color: #d16e07;
  transform: translateY(-1px);
}

.page-login__troubleshooting {
  background: var(--background-light);
  border-radius: 12px;
  padding: 30px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.page-login__troubleshooting-title {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--primary-color);
  text-align: center;
}

.page-login__troubleshooting-list {
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 16px;
  color: var(--text-dark);
}

.page-login__troubleshooting-list li {
  margin-bottom: 10px;
  padding-left: 25px;
  position: relative;
}

.page-login__troubleshooting-list li strong {
  color: var(--primary-color);
}

.page-login__troubleshooting-list li::before {
  content: "•";
  color: var(--login-button-color); /* Bullet point color */
  position: absolute;
  left: 0;
  font-size: 20px;
  line-height: 1;
  top: 0;
}

/* FAQ Section */
.page-login__faq-section {
  background: var(--background-light);
}

.page-login__faq-list {
  max-width: 900px;
  margin: 0 auto;
}

.page-login__faq-item {
  margin-bottom: 15px;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
}

.page-login__faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.3s ease;
  padding: 0 30px;
  opacity: 0;
}

.page-login__faq-item.active .page-login__faq-answer {
  max-height: 2000px !important; /* Ensure it expands fully */
  padding: 20px 30px !important;
  opacity: 1;
  background: var(--secondary-color);
  border-radius: 0 0 12px 12px;
}

.page-login__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 30px;
  background: var(--secondary-color);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  cursor: pointer;
  user-select: none;
  transition: background-color 0.3s ease, border-color 0.3s ease;
  position: relative;
}

.page-login__faq-item.active .page-login__faq-question {
  border-bottom-left-radius: 0;
  border-bottom-right-radius: 0;
  border-color: var(--primary-color);
}

.page-login__faq-question:hover {
  background: var(--background-light);
  border-color: #d0d0d0;
}

.page-login__faq-question:active {
  background: #eeeeee;
}

.page-login__faq-question h3 {
  margin: 0;
  padding: 0;
  flex: 1;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text-dark);
  pointer-events: none;
}

.page-login__faq-toggle {
  font-size: 28px;
  font-weight: bold;
  line-height: 1;
  color: var(--primary-color);
  transition: transform 0.3s ease, color 0.3s ease;
  flex-shrink: 0;
  margin-left: 15px;
  pointer-events: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
}

.page-login__faq-item.active .page-login__faq-toggle {
  color: var(--login-button-color);
  transform: rotate(45deg); /* Rotate for 'x' effect */
}

/* CTA Section */
.page-login__cta-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, #4db3e0 100%);
    padding: 80px 0;
    text-align: center;
    color: var(--text-light);
    border-radius: 12px;
    margin: 60px auto;
    max-width: 1200px;
}

.page-login__cta-content {
    max-width: 800px;
    margin: 0 auto;
}

.page-login__cta-section .page-login__section-title {
    color: var(--text-light);
    font-size: 38px;
    margin-bottom: 25px;
}

.page-login__cta-section .page-login__section-description {
    color: var(--text-light);
    font-size: 18px;
    margin-bottom: 40px;
}

.page-login__btn-primary {
  display: inline-block;
  padding: 18px 45px;
  background: var(--login-button-color); /* Use orange for primary CTA */
  color: var(--text-light);
  text-decoration: none;
  border-radius: 8px; /* Typo fix: should be 8px */
  font-size: 20px;
  font-weight: bold;
  transition: background-color 0.3s ease, transform 0.2s ease;
  white-space: normal;
  word-wrap: break-word;
  box-sizing: border-box;
  border: none;
}

.page-login__btn-primary:hover {
  background-color: #d16e07;
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.2);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .page-login__main-title {
    font-size: 38px;
  }
  .page-login__intro-text {
    font-size: 18px;
  }
  .page-login__section-title {
    font-size: 32px;
  }
  .page-login__section-description {
    font-size: 16px;
  }
  .page-login__grid-img, .page-login__security-img {
    height: auto; /* Allow auto height for smaller screens */
  }
  .page-login__cta-section .page-login__section-title {
    font-size: 32px;
  }
}

@media (max-width: 768px) {
  .page-login__hero-banner {
    padding: 60px 15px 40px;
    padding-top: var(--header-offset, 120px) !important; /* Mobile specific header offset */
  }
  .page-login__main-title {
    font-size: 30px;
  }
  .page-login__intro-text {
    font-size: 16px;
    margin-bottom: 30px;
  }
  .page-login__login-form-wrapper {
    padding: 25px;
    margin-top: 20px;
  }
  .page-login__form-input, .page-login__submit-button, .page-login__btn-download, .page-login__btn-primary {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
    padding-left: 15px;
    padding-right: 15px;
  }
  .page-login__form-links {
    flex-direction: column;
    gap: 10px;
    align-items: center;
  }
  .page-login__forgot-password-link, .page-login__register-link {
    width: 100%;
    text-align: center;
  }
  
  .page-login__section {
    padding: 40px 0;
  }
  .page-login__container {
    padding: 0 15px;
  }
  .page-login__section-title {
    font-size: 26px;
  }
  .page-login__section-description {
    font-size: 15px;
    margin-bottom: 30px;
  }
  .page-login__grid, .page-login__security-grid, .page-login__guide-steps {
    grid-template-columns: 1fr;
    gap: 25px;
  }
  .page-login__grid-item, .page-login__security-item, .page-login__step-item {
    padding: 20px;
  }
  .page-login__grid-title, .page-login__security-title, .page-login__step-title {
    font-size: 20px;
  }
  .page-login__grid-img {
    height: 200px; /* Smaller fixed height for mobile cards */
  }
  .page-login__security-img {
     /* Smaller fixed height for mobile security items */
  }
  .page-login__device-guide {
    padding: 30px 20px;
  }
  .page-login__device-title {
    font-size: 24px;
  }
  .page-login__device-guide p {
    font-size: 16px;
  }
  .page-login__troubleshooting-title {
    font-size: 20px;
  }
  .page-login__troubleshooting-list li {
    font-size: 15px;
  }

  /* FAQ Mobile */
  .page-login__faq-question {
    padding: 15px 20px;
    flex-wrap: wrap;
  }
  .page-login__faq-question h3 {
    font-size: 16px;
    width: calc(100% - 40px);
  }
  .page-login__faq-toggle {
    margin-left: 10px;
    width: 28px;
    height: 28px;
    font-size: 24px;
  }
  .page-login__faq-answer {
    padding: 0 20px;
  }
  .page-login__faq-item.active .page-login__faq-answer {
    padding: 15px 20px !important;
  }

  /* CTA Mobile */
  .page-login__cta-section {
    padding: 50px 15px;
    margin: 40px 15px;
  }
  .page-login__cta-section .page-login__section-title {
    font-size: 28px;
  }
  .page-login__cta-section .page-login__section-description {
    font-size: 16px;
  }
  .page-login__btn-primary {
    padding: 15px 30px;
    font-size: 18px;
  }

  /* Ensure all images are responsive */
  .page-login img {
    max-width: 100% !important;
    height: auto !important;
    display: block;
  }
  .page-login__section,
  .page-login__card,
  .page-login__container,
  .page-login__login-form-wrapper,
  .page-login__grid-item,
  .page-login__security-item,
  .page-login__step-item,
  .page-login__device-guide,
  .page-login__troubleshooting,
  .page-login__faq-item,
  .page-login__cta-section {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }
}