.page-index {
  background-color: var(--deep-navy, #08162B);
  color: var(--text-main, #F3F8FF);
  font-family: Arial, sans-serif;
  line-height: 1.6;
  padding-bottom: 50px;
}

.page-index__container {
  max-width: 1250px;
  margin: 0 auto;
  padding: 0 15px;
  box-sizing: border-box;
}

.page-index__hero-section {
  padding-top: 10px; /* shared đã cho body padding-top */
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
  box-sizing: border-box;
}

.page-index__hero-image img {
  width: 100%;
  height: auto;
  max-width: 100%;
  display: block;
  object-fit: cover;
}

.page-index__access-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  max-width: 1250px;
  margin: 0 auto;
  padding: 30px 15px;
  box-sizing: border-box;
}

.page-index__btn-access-link {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 15px 20px;
  border-radius: 8px;
  background: linear-gradient(180deg, #2B73F6 0%, #1144A6 100%);
  color: var(--text-main, #F3F8FF);
  font-size: 18px;
  font-weight: bold;
  text-decoration: none;
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  max-width: 100%;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

.page-index__btn-access-link:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3), 0 0 15px var(--glow, #4FA8FF);
}

.page-index__brand-intro {
  max-width: 1250px;
  margin: 0 auto;
  padding: 40px 15px;
  box-sizing: border-box;
  text-align: center;
}

.page-index__main-title {
  font-weight: bold;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text-main, #F3F8FF);
  margin-bottom: 20px;
  text-shadow: 0 0 10px rgba(79, 168, 255, 0.5);
  font-size: clamp(2.2em, 4vw, 3.5em);
}

.page-index__intro-text {
  font-size: 1.1em;
  color: var(--text-secondary, #AFC4E8);
  margin-bottom: 30px;
  text-align: justify;
}

.page-index__intro-text a {
  color: var(--gold, #F2C14E);
  text-decoration: underline;
}

.page-index__section-title {
  font-size: clamp(1.8em, 3vw, 2.8em);
  font-weight: bold;
  color: var(--text-main, #F3F8FF);
  text-align: center;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 15px;
}

.page-index__section-title::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: var(--gold, #F2C14E);
  border-radius: 2px;
}

.page-index__section-description {
  font-size: 1em;
  color: var(--text-secondary, #AFC4E8);
  text-align: center;
  max-width: 900px;
  margin: 0 auto 40px auto;
}

.page-index__category-lobby {
  padding: 50px 0;
}

.page-index__category-lobby__grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  justify-content: center;
  align-items: stretch;
}

.page-index__category-card {
  display: flex;
  justify-content: center;
  align-items: center;
  background: transparent;
  border-radius: 0;
  padding: 0;
  margin: 0;
  border: none;
  box-shadow: none;
  outline: none;
}

.page-index__category-card-link {
  display: block;
  width: 100%;
  height: 100%;
  text-decoration: none;
  border: none;
  box-shadow: none;
  outline: none;
  background: transparent;
  border-radius: 0;
  padding: 0;
  margin: 0;
}

.page-index__category-card-link img {
  aspect-ratio: 1 / 1;
  width: 100%;
  height: auto;
  object-fit: contain;
  display: block;
  border: none;
  box-shadow: none;
  border-radius: 0;
  transition: transform 0.3s ease;
}

.page-index__category-card-link:hover img {
  transform: scale(1.05);
}

.page-index__blog-slider {
  padding: 50px 0;
}

.page-index__blog-slider-wrapper {
  position: relative;
  margin: 0 auto;
  max-width: 1250px;
  padding: 0 40px;
}

.page-index__blog-slider-track {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none; /* Firefox */
}

.page-index__blog-slider-track::-webkit-scrollbar {
  display: none; /* Chrome, Safari, Opera */
}

.page-index__post-item {
  flex: 0 0 calc(33.333% - 11px); /* 3 cards visible on desktop with 16px gap */
  scroll-snap-align: start;
  background: var(--card-bg, #10233F);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border, #244D84);
  transition: transform 0.3s ease;
}

.page-index__post-item:hover {
  transform: translateY(-5px);
}

.page-index__post-link {
  text-decoration: none;
  color: inherit;
  display: block;
}

.page-index__post-image-wrapper {
  position: relative;
  width: 100%;
  padding-top: 56.25%; /* 16:9 Aspect Ratio */
  overflow: hidden;
}

.page-index__post-image-wrapper img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-index__post-date {
  position: absolute;
  top: 10px;
  right: 10px;
  background: var(--gold, #F2C14E);
  color: #000;
  padding: 5px 10px;
  border-radius: 5px;
  font-size: 0.85em;
  font-weight: bold;
}

.page-index__post-content {
  padding: 20px;
}

.page-index__post-title {
  font-size: 1.2em;
  font-weight: bold;
  color: var(--text-main, #F3F8FF);
  margin-bottom: 10px;
}

.page-index__post-divider {
  width: 50px;
  height: 2px;
  background: var(--divider, #1B3357);
  margin: 10px 0;
}

.page-index__post-summary {
  font-size: 0.9em;
  color: var(--text-secondary, #AFC4E8);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.page-index__blog-slider-prev,
.page-index__blog-slider-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(17, 59, 122, 0.7);
  color: var(--text-main, #F3F8FF);
  border: none;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  font-size: 24px;
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 10;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
  transition: background-color 0.3s ease;
}

.page-index__blog-slider-prev:hover,
.page-index__blog-slider-next:hover {
  background: var(--primary, #113B7A);
}

.page-index__blog-slider-prev {
  left: 0;
}

.page-index__blog-slider-next {
  right: 0;
}

.page-index__view-all-button-wrapper {
  text-align: center;
  margin-top: 40px;
}

.page-index__btn-view-all {
  display: inline-block;
  padding: 12px 25px;
  background: linear-gradient(180deg, #2B73F6 0%, #1144A6 100%);
  color: var(--text-main, #F3F8FF);
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-index__btn-view-all:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3), 0 0 15px var(--glow, #4FA8FF);
}

.page-index__about-us-summary, .page-index__why-choose-us, .page-index__cta-section {
  padding: 50px 0;
  text-align: center;
}

.page-index__features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin-top: 40px;
}

.page-index__feature-item {
  background: var(--card-bg, #10233F);
  border: 1px solid var(--border, #244D84);
  border-radius: 10px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.page-index__feature-title {
  font-size: 1.4em;
  font-weight: bold;
  color: var(--text-main, #F3F8FF);
  margin-bottom: 15px;
}

.page-index__feature-description {
  font-size: 1em;
  color: var(--text-secondary, #AFC4E8);
}

.page-index__btn-read-more {
  display: inline-block;
  margin-top: 30px;
  padding: 12px 25px;
  background: linear-gradient(180deg, #2B73F6 0%, #1144A6 100%);
  color: var(--text-main, #F3F8FF);
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-index__btn-read-more:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3), 0 0 15px var(--glow, #4FA8FF);
}

.page-index__cta-title {
  font-size: clamp(1.8em, 3.5vw, 3em);
  font-weight: bold;
  color: var(--gold, #F2C14E);
  margin-bottom: 20px;
  text-shadow: 0 0 10px rgba(242, 193, 78, 0.5);
}

.page-index__cta-description {
  font-size: 1.1em;
  color: var(--text-secondary, #AFC4E8);
  max-width: 800px;
  margin: 0 auto 30px auto;
}

.page-index__btn-cta {
  display: inline-block;
  padding: 15px 35px;
  background: linear-gradient(180deg, #2B73F6 0%, #1144A6 100%);
  color: var(--text-main, #F3F8FF);
  border-radius: 10px;
  text-decoration: none;
  font-size: 20px;
  font-weight: bold;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  max-width: 100%;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

.page-index__btn-cta:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4), 0 0 20px var(--glow, #4FA8FF);
}

/* --- Responsive Styles --- */
@media (max-width: 1024px) {
  .page-index__main-title {
    font-size: clamp(2em, 5vw, 3em);
  }
  .page-index__access-links {
    gap: 10px;
    padding: 20px 15px;
  }
  .page-index__btn-access-link {
    font-size: 16px;
    padding: 12px 15px;
  }
  .page-index__category-lobby__grid {
    gap: 12px;
  }
  .page-index__post-item {
    flex: 0 0 calc(50% - 8px); /* 2 cards visible */
  }
  .page-index__features-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .page-index__blog-slider-wrapper {
    padding: 0 20px;
  }
  .page-index__blog-slider-prev,
  .page-index__blog-slider-next {
    width: 35px;
    height: 35px;
    font-size: 20px;
  }
}

@media (max-width: 849px) {
  .page-index__hero-image img {
    object-fit: contain !important;
    aspect-ratio: unset !important;
    max-height: none !important;
  }
}

@media (max-width: 768px) {
  .page-index {
    font-size: 15px;
    line-height: 1.5;
  }
  .page-index__container {
    padding: 0 15px;
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }

  /* Module 1: Banner */
  .page-index__hero-section {
    padding-top: 10px; /* already handled, keep at 10px */
  }
  .page-index__hero-image img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }

  /* Module 2: Three-link buttons */
  .page-index__access-links {
    grid-template-columns: 1fr;
    padding: 20px 15px;
    gap: 10px;
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
    flex-wrap: wrap !important;
  }
  .page-index__btn-access-link {
    width: 100% !important;
    max-width: 100% !important;
    font-size: 16px !important;
    padding: 12px 15px !important;
    white-space: normal !important;
    word-wrap: break-word !important;
    box-sizing: border-box !important;
  }

  /* Module 3: Brand intro */
  .page-index__brand-intro {
    padding: 30px 15px;
  }
  .page-index__main-title {
    font-size: 2em; /* Adjusted for mobile */
  }
  .page-index__intro-text {
    font-size: 1em;
  }

  /* Module 4: Game lobby */
  .page-index__category-lobby {
    padding: 30px 0;
  }
  .page-index__category-lobby__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    padding: 0 15px;
  }
  .page-index__category-card-link img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    object-fit: contain !important; /* Ensure aspect ratio is maintained */
  }

  /* Module 5: Blog slider */
  .page-index__blog-slider {
    padding: 30px 0;
  }
  .page-index__blog-slider-wrapper {
    padding: 0 15px;
  }
  .page-index__blog-slider-prev,
  .page-index__blog-slider-next {
    width: 30px;
    height: 30px;
    font-size: 18px;
  }
  .page-index__blog-slider-prev {
    left: 5px;
  }
  .page-index__blog-slider-next {
    right: 5px;
  }
  .page-index__blog-slider-track {
    gap: 10px;
  }
  .page-index__post-item {
    flex: 0 0 85%; /* 1 card visible, with some peek of next */
  }
  .page-index__post-content {
    padding: 15px;
  }
  .page-index__post-title {
    font-size: 1.1em;
  }
  .page-index__post-summary {
    font-size: 0.85em;
  }

  /* Other sections */
  .page-index__about-us-summary, .page-index__why-choose-us, .page-index__cta-section {
    padding: 30px 0;
  }
  .page-index__features-grid {
    grid-template-columns: 1fr;
    gap: 15px;
    padding: 0 15px;
  }
  .page-index__feature-item {
    padding: 20px;
  }
  .page-index__feature-title {
    font-size: 1.2em;
  }
  .page-index__feature-description {
    font-size: 0.95em;
  }
  .page-index__btn-read-more, .page-index__btn-cta, .page-index__btn-view-all {
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
    padding: 12px 15px !important;
  }
  .page-index__cta-title {
    font-size: 1.8em;
  }
  .page-index__cta-description {
    font-size: 1em;
  }

  /* Generic image and button responsiveness */
  .page-index img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }
  .page-index__section, .page-index__card, .page-index__container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }
}