.page-index {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  background: #F4F7FB;
  color: #1F2D3D;
  font-family: 'Segoe UI', 'Open Sans', Roboto, Arial, sans-serif;
  line-height: 1.7;
  overflow-x: hidden;
}

/* ===== Module 0: Hero Section ===== */
.page-index__hero-section {
  padding: 0;
  margin: 0;
  width: 100%;
  background: var(--body-bg);
}

.page-index__hero-container {
  width: 100%;
  max-width: 1600px;
  margin: 0 auto;
}

.page-index__hero-link {
  display: block;
  width: 100%;
  text-decoration: none;
}

.page-index__hero-image {
  width: 100%;
  height: auto;
  aspect-ratio: 17 / 5;
  object-fit: cover;
  display: block;
}

/* ===== Module 1: Logo Grid Section ===== */
.page-index__logo-grid-section {
  width: 100%;
  max-width: 1200px;
  margin: 20px auto 30px;
  padding: 0 16px;
  background: transparent;
}

.page-index__logo-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px 20px;
  justify-items: center;
  align-items: start;
  width: 100%;
  margin: 0 auto;
}

.page-index__logo-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  gap: 12px;
  width: 100%;
  max-width: 270px;
  padding: 14px 8px;
  background: #FFFFFF;
  border: 1px solid #D6E2FF;
  border-radius: 18px;
  box-shadow: 0 4px 18px rgba(47, 107, 255, 0.08);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.page-index__logo-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 26px rgba(47, 107, 255, 0.18);
}

.page-index__logo-image {
  width: 100%;
  max-width: 240px;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: contain;
  display: block;
  border-radius: 8px;
}

.page-index__logo-cta {
  display: inline-block;
  width: auto;
  min-width: 120px;
  padding: 10px 20px;
  border-radius: 999px;
  background: linear-gradient(180deg, #4A8BFF 0%, #2F6BFF 100%);
  color: #FFFFFF;
  font-size: 0.95rem;
  font-weight: 700;
  text-decoration: none;
  text-align: center;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(47, 107, 255, 0.3);
  transition: background 0.2s ease, box-shadow 0.2s ease;
}

.page-index__logo-cta:hover {
  background: linear-gradient(180deg, #3D7DFF 0%, #1F54E0 100%);
  box-shadow: 0 6px 16px rgba(47, 107, 255, 0.45);
}

/* Fix the 4+2 desktop grid layout */
.page-index__logo-item:nth-child(1) { grid-column: 1; }
.page-index__logo-item:nth-child(2) { grid-column: 2; }
.page-index__logo-item:nth-child(3) { grid-column: 3; }
.page-index__logo-item:nth-child(4) { grid-column: 4; }
.page-index__logo-item:nth-child(5) { grid-column: 2; }
.page-index__logo-item:nth-child(6) { grid-column: 3; }

/* ===== Module 2: Guide Section (SEO) ===== */
.page-index__guide-section {
  width: 100%;
  background: #FFFFFF;
  padding: 24px 0 48px;
}

.page-index__guide-inner {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 16px;
}

.page-index__guide-title {
  text-align: center;
  color: #2F6BFF;
  font-size: 2rem;
  line-height: 1.3;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin: 6px 0 16px;
}

.page-index__guide-intro {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 28px;
  font-size: 1.05rem;
  color: #1F2D3D;
}

.page-index__guide-section h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: #2F6BFF;
  margin: 40px 0 14px;
  padding-bottom: 8px;
  border-bottom: 2px solid #A5C4FF;
}

.page-index__guide-section h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: #1F2D3D;
  margin: 24px 0 8px;
}

.page-index__guide-section p {
  font-size: 1rem;
  color: #1F2D3D;
  margin-bottom: 16px;
  line-height: 1.8;
}

.page-index__guide-section ul,
.page-index__guide-section ol {
  margin: 0 0 16px 22px;
  padding: 0;
  color: #1F2D3D;
}

.page-index__guide-section li {
  margin-bottom: 10px;
  line-height: 1.7;
}

.page-index__guide-figure {
  margin: 24px auto;
  text-align: center;
  max-width: 800px;
}

.page-index__guide-figure img {
  width: 100%;
  max-width: 800px;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  display: block;
  margin: 0 auto;
  border-radius: 12px;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.06);
}

.page-index__guide-figure figcaption {
  font-size: 0.85rem;
  color: #1F2D3D;
  margin-top: 8px;
  font-style: italic;
  opacity: 0.75;
}

.page-index__guide-faq {
  background: #F4F7FB;
  border: 1px solid #D6E2FF;
  border-radius: 12px;
  padding: 14px 18px;
  margin-bottom: 16px;
}

.page-index__guide-faq summary {
  font-weight: 600;
  color: #1F2D3D;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.page-index__guide-faq summary::-webkit-details-marker {
  display: none;
}

.page-index__guide-faq summary::after {
  content: "+";
  font-size: 1.6rem;
  line-height: 1;
  color: #2F6BFF;
  font-weight: 400;
  margin-left: 12px;
}

.page-index__guide-faq[open] summary::after {
  content: "−";
}

.page-index__guide-faq p {
  margin-top: 12px;
  margin-bottom: 4px;
  font-size: 0.95rem;
  color: #1F2D3D;
}

/* CTA button at end of guide */
.page-index__guide-cta {
  text-align: center;
  margin-top: 32px;
}

.page-index__guide-cta-btn {
  display: inline-block;
  padding: 14px 36px;
  border-radius: 999px;
  background: linear-gradient(180deg, #4A8BFF 0%, #2F6BFF 100%);
  color: #FFFFFF;
  font-weight: 700;
  font-size: 1.1rem;
  text-decoration: none;
  box-shadow: 0 6px 20px rgba(47, 107, 255, 0.4);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.page-index__guide-cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(47, 107, 255, 0.5);
}

/* ===== Responsive (Tablet) @max-width: 1024px ===== */
@media (max-width: 1024px) {
  .page-index__guide-title {
    font-size: 1.8rem;
  }

  .page-index__hero-image {
    aspect-ratio: 17 / 6;
  }
}

/* ===== Responsive (Mobile) @max-width: 768px ===== */
@media (max-width: 768px) {
  .page-index {
    max-width: 100%;
    overflow-x: hidden;
  }

  /* Hero full-width img, avoid large impact */
  .page-index__hero-image {
    aspect-ratio: 2 / 1;
  }

  /* Logo grid: 2 columns, cancel nth-child grid-column positioning */
  .page-index__logo-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px 10px;
    padding: 0 8px;
  }

  .page-index__logo-item {
    max-width: 180px;
    padding: 10px 6px;
    gap: 8px;
  }

  .page-index__logo-item:nth-child(1),
  .page-index__logo-item:nth-child(2),
  .page-index__logo-item:nth-child(3),
  .page-index__logo-item:nth-child(4),
  .page-index__logo-item:nth-child(5),
  .page-index__logo-item:nth-child(6) {
    grid-column: auto;
  }

  .page-index__logo-cta {
    width: auto;
    font-size: 0.78rem;
    padding: 8px 12px;
    min-width: 90px;
  }

  .page-index__guide-title {
    font-size: 1.35rem;
  }

  .page-index__guide-inner {
    padding: 0 12px;
  }

  .page-index__guide-section h2 {
    font-size: 1.25rem;
  }

  .page-index__guide-section h3 {
    font-size: 1.05rem;
  }

  .page-index__guide-figure figcaption {
    font-size: 0.75rem;
  }

  .page-index__guide-cta-btn {
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    font-size: 1rem;
    padding: 14px 12px;
    white-space: normal;
    word-break: break-word;
  }

  .page-index__guide-faq summary {
    font-size: 0.9rem;
  }

  /* Mobile *any* img inside page-index should be fluid & responsive */
  .page-index img {
    max-width: 100% !important;
    height: auto !important;
  }
}

/* ===== Extra Small Screen (Optional) @max-width: 480px ===== */
@media (max-width: 480px) {
  .page-index__logo-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .page-index__logo-item {
    max-width: 160px;
  }

  .page-index__logo-image {
    min-height: 65px;
  }
}