.page-index {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: #F3F8FF; /* Text Main */
  background-color: var(--deep-navy); /* Body background from shared.css */
}

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

.page-index__section {
  padding: 40px 0;
}

.page-index__page-title {
  font-size: clamp(2em, 4vw, 2.8em);
  font-weight: bold;
  text-align: center;
  margin-bottom: 20px;
  color: #F3F8FF; /* Text Main */
  line-height: 1.2;
}

.page-index__hero-description {
  font-size: 1.1em;
  text-align: center;
  margin-bottom: 30px;
  color: #AFC4E8; /* Text Secondary */
}

.page-index__top-section {
  padding-top: 10px; /* Minimal top padding, body handles header offset */
  padding-bottom: 40px;
}

.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 30px;
  min-height: 44px;
  border-radius: 6px;
  font-size: 1.1em;
  font-weight: bold;
  text-decoration: none;
  transition: background-color 0.3s ease, transform 0.2s ease;
  max-width: 100%;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
  text-align: center;
}

.page-index__btn--primary {
  background: linear-gradient(180deg, #2B73F6 0%, #1144A6 100%); /* Custom Button Color */
  color: #F3F8FF; /* Text Main */
  border: none;
}

.page-index__btn--primary:hover {
  transform: translateY(-2px);
  opacity: 0.9;
}

.page-index__btn--danger {
  background: #d62828; /* Emphasized Red */
  color: #ffffff;
  border: none;
}

.page-index__btn--danger:hover {
  transform: translateY(-2px);
  opacity: 0.9;
}

.page-index__section-title {
  font-size: 2em;
  font-weight: bold;
  text-align: center;
  margin-bottom: 30px;
  color: #F3F8FF; /* Text Main */
}

.page-index__section-title--notification {
  color: #F2C14E; /* Gold */
  font-size: 1.8em;
}

.page-index__notification-icon {
  margin-right: 10px;
}

.page-index p {
  margin-bottom: 1em;
  text-align: justify;
  color: #AFC4E8; /* Text Secondary */
}

.page-index a {
  color: #4FA8FF; /* Glow */
  text-decoration: underline;
}

.page-index a:hover {
  color: #F2C14E; /* Gold */
}

.page-index ul,
.page-index ol {
  margin-bottom: 1em;
  padding-left: 25px;
  color: #AFC4E8; /* Text Secondary */
}

.page-index ul li,
.page-index ol li {
  margin-bottom: 0.5em;
}

.page-index strong {
  color: #F3F8FF; /* Text Main */
}

.page-index__core-values li {
  color: #F3F8FF; /* Text Main */
}

.page-index__highlight-text {
  text-align: center;
  font-style: italic;
  color: #d62828; /* Emphasized Red */
  margin-top: 20px;
}

.page-index__fact-list li strong {
  color: #F2C14E; /* Gold */
}

.page-index__info-card {
  background-color: #10233F; /* Card BG */
  border: 1px solid #244D84; /* Border */
  border-radius: 8px;
  padding: 25px;
  margin-top: 30px;
  color: #F3F8FF; /* Text Main */
}

.page-index__info-card p {
  color: #F3F8FF; /* Text Main */
  text-align: left;
}

.page-index__info-card ul {
  color: #AFC4E8; /* Text Secondary */
}

.page-index__info-card em {
  font-size: 0.9em;
  color: #AFC4E8; /* Text Secondary */
}

.page-index__warning-card {
  background-color: #10233F; /* Card BG */
  border-left: 5px solid #ff4141; /* Red warning border */
  border-radius: 0 8px 8px 0;
  padding: 20px;
  margin-top: 25px;
  color: #AFC4E8; /* Text Secondary */
}

.page-index__warning-card strong {
  color: #ff4141;
}

.page-index__seo-content-section h2,
.page-index__seo-content-section h3 {
  color: #F2C14E; /* Gold for main headings in SEO content */
  text-align: left;
  margin-top: 40px;
  margin-bottom: 20px;
}

.page-index__seo-content-section h2 {
  font-size: 1.8em;
}

.page-index__seo-content-section h3 {
  font-size: 1.5em;
}

.page-index__wp-caption {
  margin: 20px auto;
  max-width: 680px;
  background-color: #10233F; /* Card BG for captions */
  padding: 10px;
  border-radius: 8px;
  border: 1px solid #244D84; /* Border */
  box-sizing: border-box;
}

.page-index__wp-caption img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: 4px;
}

.page-index__wp-caption figcaption {
  text-align: center;
  font-size: 0.9em;
  color: #AFC4E8; /* Text Secondary */
  margin-top: 10px;
}

.page-index__figure-aligncenter {
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.page-index__blockquote-text {
  font-style: italic;
  border-left: 4px solid #F2C14E; /* Gold */
  padding-left: 15px;
  margin: 30px 0;
  color: #F3F8FF; /* Text Main */
  text-align: left;
}

.page-index__product-list li strong {
  color: #F2C14E; /* Gold */
}

.page-index__call-to-action-text {
  text-align: center;
  font-size: 1.2em;
  font-weight: bold;
  margin-top: 30px;
  color: #F3F8FF; /* Text Main */
}

.page-index__promo-box {
  background-color: #10233F; /* Card BG */
  border: 2px dashed #F2C14E; /* Gold dashed border */
  border-radius: 10px;
  padding: 30px;
  text-align: center;
  margin-top: 40px;
}

.page-index__promo-title {
  font-size: 1.8em;
  color: #F2C14E; /* Gold */
  margin-bottom: 20px;
}

.page-index__promo-features {
  list-style: none;
  padding: 0;
  margin-bottom: 25px;
  color: #AFC4E8; /* Text Secondary */
}

.page-index__promo-features li {
  margin-bottom: 10px;
  position: relative;
  padding-left: 25px;
  text-align: left;
}

.page-index__promo-features li::before {
  content: '✓';
  color: #4FA8FF; /* Glow */
  position: absolute;
  left: 0;
  font-weight: bold;
}

.page-index__registration-tutorial-section h2 {
  color: #F3F8FF; /* Text Main */
}

.page-index__tutorial-step-title {
  font-size: 1.5em;
  color: #F2C14E; /* Gold */
  margin-top: 30px;
  margin-bottom: 15px;
  text-align: left;
}

.page-index__faq-question-text {
  font-size: 1.5em;
  color: #F2C14E; /* Gold */
  margin-top: 30px;
  margin-bottom: 15px;
  text-align: left;
}

.page-index__faq-answer-text {
  color: #AFC4E8; /* Text Secondary */
  text-align: justify;
  margin-bottom: 20px;
}

.page-index__conclusion-text {
  margin-top: 30px;
  font-size: 1.1em;
  color: #F3F8FF; /* Text Main */
  text-align: justify;
}

.page-index__contact-info-list {
  list-style: none;
  padding: 0;
  margin-top: 20px;
}

.page-index__contact-info-list li {
  margin-bottom: 10px;
  color: #AFC4E8; /* Text Secondary */
}

.page-index__contact-info-list li strong {
  color: #F3F8FF; /* Text Main */
}

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

  .page-index__section {
    padding: 30px 0;
  }

  .page-index__page-title {
    font-size: clamp(1.8em, 5vw, 2.5em);
  }

  .page-index__section-title {
    font-size: 1.8em;
  }

  .page-index__section-title--notification {
    font-size: 1.6em;
  }

  .page-index__btn {
    padding: 10px 25px;
    font-size: 1em;
  }

  .page-index__seo-content-section h2 {
    font-size: 1.6em;
  }

  .page-index__seo-content-section h3,
  .page-index__tutorial-step-title,
  .page-index__faq-question-text {
    font-size: 1.3em;
  }

  .page-index__promo-title {
    font-size: 1.6em;
  }
}

@media (max-width: 768px) {
  /* 1. 顶区标题 + 双 CTA */
  .page-index__top-section {
    padding-top: 10px !important;
    padding-bottom: 30px !important;
  }

  .page-index__page-title {
    font-size: clamp(1.5em, 6vw, 2.2em) !important;
    margin-bottom: 15px !important;
  }

  .page-index__hero-description {
    font-size: 1em !important;
    margin-bottom: 20px !important;
  }

  .page-index__top-cta {
    flex-direction: column !important;
    gap: 10px !important;
    padding: 0 15px;
  }

  .page-index__btn {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
    padding: 12px 15px !important;
    font-size: 1em !important;
  }

  /* 2. 单栏长文容器 */
  .page-index__article-wrap {
    padding: 0 15px !important;
  }

  .page-index__section {
    padding: 25px 0 !important;
  }

  .page-index__section-title {
    font-size: 1.6em !important;
    margin-bottom: 20px !important;
  }

  .page-index__section-title--notification {
    font-size: 1.4em !important;
  }

  .page-index p,
  .page-index ul,
  .page-index ol {
    font-size: 0.95em !important;
    text-align: left !important;
  }

  .page-index__info-card,
  .page-index__warning-card,
  .page-index__promo-box {
    padding: 20px !important;
    margin-top: 20px !important;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .page-index__promo-features li {
    text-align: left !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 {
    max-width: 100% !important;
    padding: 10px !important;
    box-sizing: border-box !important;
  }

  .page-index__blockquote-text {
    font-size: 0.95em !important;
    padding-left: 10px !important;
    margin: 20px 0 !important;
  }

  /* 4. 按钮与按钮容器 (already covered by .page-index__btn and .page-index__top-cta) */
  /* Ensured all elements containing buttons also follow max-width: 100% */
  .page-index__top-cta,
  .page-index__promo-box {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
    flex-wrap: wrap !important;
    gap: 10px;
  }

  /* 5. 注册教程与 FAQ 区块 */
  .page-index__seo-content-section h2,
  .page-index__seo-content-section h3,
  .page-index__tutorial-step-title,
  .page-index__faq-question-text {
    font-size: 1.3em !important;
    margin-top: 25px !important;
    margin-bottom: 10px !important;
    text-align: left !important;
  }

  .page-index__conclusion-text {
    font-size: 1em !important;
  }

  .page-index__contact-info-list {
    padding-left: 0 !important;
  }

  .page-index__promo-title {
    font-size: 1.4em !important;
  }
}