.page-index {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: #333333; /* Default text color for light body background */
  background-color: #FFFFFF; /* Explicitly set body background for clarity */
}

.page-index__article-wrap {
  max-width: 1150px;
  margin: 0 auto;
  padding: 0 20px;
  box-sizing: border-box;
}

.page-index__section {
  padding: 20px 0;
  margin-bottom: 20px;
}

.page-index__top-section {
  padding-top: 10px; /* Small top padding as per rules */
  padding-bottom: 30px;
  text-align: center;
}

.page-index__page-title {
  font-weight: bold;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: #017439;
  text-align: center;
  margin-bottom: 25px;
  /* No fixed font-size for h1 */
  font-size: clamp(28px, 4vw, 48px); /* Using clamp for responsive H1 */
}

.page-index__top-cta {
  display: flex;
  gap: 15px;
  justify-content: center;
  flex-wrap: wrap;
}

.page-index__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 25px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: bold;
  font-size: 18px;
  min-height: 44px; /* Minimum touch target height */
  line-height: 1.2;
  transition: background-color 0.3s ease, color 0.3s ease;
  max-width: 100%; /* Ensure button responsiveness */
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

.page-index__btn--primary {
  background-color: #C30808; /* Custom color for register/login */
  color: #FFFF00; /* Custom font color for register/login */
  border: 2px solid #C30808;
}

.page-index__btn--primary:hover {
  background-color: #e00000;
  border-color: #e00000;
}

.page-index__announcement-section,
.page-index__brand-overview-section,
.page-index__seo-long-text,
.page-index__promo-box-section,
.page-index__registration-tutorial-section,
.page-index__faq-section {
  padding: 30px 0;
  background-color: #FFFFFF;
  border-bottom: 1px solid #eee;
}

.page-index__announcement-title {
  font-size: 26px;
  color: #017439;
  text-align: center;
  margin-bottom: 20px;
  font-weight: bold;
}

.page-index__text-block {
  margin-bottom: 15px;
  text-align: justify;
}

.page-index__feature-list,
.page-index__fact-list,
.page-index__identification-list,
.page-index__advantage-list,
.page-index__form-list,
.page-index__promo-features,
.page-index__contact-info ul {
  list-style: disc;
  margin-left: 25px;
  margin-bottom: 15px;
}

.page-index__feature-list li,
.page-index__fact-list li,
.page-index__identification-list li,
.page-index__advantage-list li,
.page-index__form-list li,
.page-index__promo-features li,
.page-index__contact-info ul li {
  margin-bottom: 8px;
}

.page-index__emphasis-text {
  text-align: center;
  font-style: italic;
  color: #d62828; /* Emphasize with red */
  font-weight: bold;
  margin-top: 20px;
}

.page-index__emphasis-text a {
  color: #d62828;
  text-decoration: underline;
}

.page-index__info-card {
  background-color: #f9f9f9;
  border: 1px solid #ddd;
  border-radius: 8px;
  padding: 20px;
  margin-top: 30px;
  margin-bottom: 20px;
}

.page-index__warning-card {
  background-color: #fff4f4;
  border-left: 5px solid #ff4141;
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 20px;
}

.page-index__seo-long-text h2,
.page-index__registration-tutorial-section h2,
.page-index__faq-section h2 {
  font-size: 28px;
  color: #017439;
  margin-top: 30px;
  margin-bottom: 20px;
  font-weight: bold;
  text-align: center;
}

.page-index__seo-long-text h3,
.page-index__registration-tutorial-section h3,
.page-index__faq-item h3 {
  font-size: 22px;
  color: #017439;
  margin-top: 25px;
  margin-bottom: 15px;
  font-weight: bold;
}

.page-index__wp-caption {
  margin: 20px auto;
  text-align: center;
  max-width: 680px; /* Max width for content images */
  width: 100%;
}

.page-index__wp-caption img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
}

.page-index__figcaption {
  font-size: 14px;
  color: #666;
  margin-top: 10px;
}

.page-index blockquote {
  background-color: #f0f8ff;
  border-left: 5px solid #0066ff;
  padding: 20px;
  margin: 30px 0;
  font-style: italic;
  color: #555;
  border-radius: 8px;
}

.page-index__quote-text {
  margin-bottom: 10px;
  text-align: justify;
}

.page-index__quote-cite {
  display: block;
  text-align: right;
  font-weight: bold;
  color: #0066ff;
  margin-top: 10px;
}

.page-index__promo-box-section {
  padding: 40px 0;
}

.page-index__promo-box {
  background-color: #fffbe6;
  border: 2px dashed #111;
  border-radius: 10px;
  padding: 30px;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
  box-sizing: border-box;
}

.page-index__promo-box-title {
  font-size: 28px;
  color: #d62828;
  margin-bottom: 20px;
  font-weight: bold;
}

.page-index__promo-features {
  list-style: none;
  padding: 0;
  margin-left: 0;
  margin-bottom: 25px;
}

.page-index__promo-features li {
  font-size: 18px;
  margin-bottom: 10px;
  color: #333333;
}

.page-index__btn--danger {
  background-color: #d62828;
  color: #ffffff;
  border: 2px solid #d62828;
}

.page-index__btn--danger:hover {
  background-color: #ff0000;
  border-color: #ff0000;
}

.page-index__tutorial-step {
  margin-bottom: 40px;
}

.page-index__faq-item {
  margin-bottom: 20px;
}

.page-index__faq-answer {
  margin-top: 10px;
  text-align: justify;
}

.page-index__contact-info {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid #eee;
}

.page-index__contact-info p {
  font-weight: bold;
  font-size: 18px;
  color: #017439;
  margin-bottom: 10px;
}

.page-index__contact-info ul {
  list-style: none;
  padding: 0;
  margin-left: 0;
}

.page-index__contact-info ul li {
  margin-bottom: 5px;
}

.page-index__contact-info ul li a {
  color: #0066ff;
  text-decoration: none;
}

.page-index__contact-info ul li a:hover {
  text-decoration: underline;
}

/* --- Responsive Styles --- */

@media (max-width: 1024px) {
  .page-index__article-wrap {
    padding: 0 15px;
  }

  .page-index__page-title {
    font-size: clamp(26px, 3.5vw, 44px);
  }

  .page-index__btn {
    font-size: 16px;
    padding: 10px 20px;
  }

  .page-index__announcement-title {
    font-size: 24px;
  }

  .page-index__seo-long-text h2,
  .page-index__registration-tutorial-section h2,
  .page-index__faq-section h2 {
    font-size: 26px;
  }

  .page-index__seo-long-text h3,
  .page-index__registration-tutorial-section h3,
  .page-index__faq-item h3 {
    font-size: 20px;
  }

  .page-index__promo-box-title {
    font-size: 24px;
  }

  .page-index__promo-features li {
    font-size: 16px;
  }
}

@media (max-width: 768px) {
  /* 1. 顶区标题 + 双 CTA */
  .page-index__top-section {
    padding-top: 10px !important; /* Small top padding, important for mobile */
    padding-bottom: 20px;
  }

  .page-index__page-title {
    font-size: clamp(24px, 6vw, 36px);
    margin-bottom: 20px;
  }

  .page-index__top-cta {
    flex-direction: column; /* Buttons stack vertically on mobile */
    gap: 10px;
    padding: 0 15px; /* Add padding to button container */
    width: 100%;
    box-sizing: border-box;
  }

  .page-index__btn {
    max-width: 100% !important;
    width: 100% !important;
    font-size: 16px !important;
    padding: 12px 15px !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
  }

  /* 2. 单栏长文容器 */
  .page-index__article-wrap {
    padding: 0 15px !important;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .page-index__section {
    padding: 15px 0;
    margin-bottom: 15px;
  }

  .page-index__text-block {
    text-align: left; /* Mobile text alignment can be left for better readability */
  }

  .page-index__info-card,
  .page-index__warning-card,
  .page-index__promo-box {
    padding: 15px !important;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  /* 3. 通用图片与 figure */
  .page-index img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }

  .page-index__wp-caption {
    margin: 15px auto !important;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  /* 4. 按钮与按钮容器 (already covered by .page-index__btn and .page-index__top-cta) */
  /* Ensure all buttons within content areas also adapt */
  .page-index__btn--danger {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
  }

  /* 5. 注册教程与 FAQ 区块 */
  .page-index__seo-long-text h2,
  .page-index__registration-tutorial-section h2,
  .page-index__faq-section h2 {
    font-size: 22px;
    margin-top: 20px;
    margin-bottom: 15px;
  }

  .page-index__seo-long-text h3,
  .page-index__registration-tutorial-section h3,
  .page-index__faq-item h3 {
    font-size: 18px;
    margin-top: 20px;
    margin-bottom: 10px;
  }

  .page-index__announcement-title {
    font-size: 20px;
  }

  .page-index__promo-box-title {
    font-size: 20px;
  }

  .page-index__promo-features li {
    font-size: 15px;
  }

  .page-index__feature-list,
  .page-index__fact-list,
  .page-index__identification-list,
  .page-index__advantage-list,
  .page-index__form-list,
  .page-index__promo-features,
  .page-index__contact-info ul {
    margin-left: 15px;
  }

  .page-index__contact-info p {
    font-size: 16px;
  }
}