:root {
  --primary-color: #C91F17;
  --secondary-color: #E53935;
  --button-gradient: linear-gradient(180deg, #FFD86A 0%, #E6B800 100%);
  --card-bg-color: #D32F2F;
  --background-color: #B71C1C;
  --text-main-color: #FFF5E1;
  --border-color: #F2B544;
  --glow-color: #FFCC66;
  --gold-color: #F4D34D;
  --deep-red-color: #7A0E0E;
}

.page-index {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-main-color);
  background-color: var(--background-color);
  padding-bottom: 20px;
}

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

.page-index__section-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
  box-sizing: border-box;
}

.page-index__section-title.tieudevip {
  font-size: 2.2em;
  font-weight: bold;
  text-align: center;
  margin-bottom: 30px;
  padding: 10px 20px;
  color: var(--text-main-color);
  border: 2px solid var(--border-color);
  border-radius: 8px;
  display: inline-block;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  background-color: var(--deep-red-color);
}

.page-index__hero-carousel-section {
  padding-top: 10px;
  position: relative;
  overflow: hidden;
  margin-bottom: 30px;
}

.page-index__hero-slider {
  position: relative;
  width: 100%;
  overflow: hidden;
}

.page-index__hero-slide {
  display: none;
  width: 100%;
  transition: opacity 0.5s ease-in-out;
}

.page-index__hero-slide.is-active {
  display: block;
}

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

.page-index__hero-slider-prev,
.page-index__hero-slider-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(0, 0, 0, 0.5);
  color: var(--text-main-color);
  border: none;
  padding: 10px 15px;
  cursor: pointer;
  font-size: 1.5em;
  z-index: 10;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-index__hero-slider-prev {
  left: 10px;
}

.page-index__hero-slider-next {
  right: 10px;
}

.page-index__hero-slider-prev::before { content: '‹'; }
.page-index__hero-slider-next::before { content: '›'; }

.page-index__hero-slider-dots {
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 10;
}

.page-index__hero-slider-dot {
  width: 10px;
  height: 10px;
  background-color: rgba(255, 255, 255, 0.5);
  border-radius: 50%;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

.page-index__hero-slider-dot.is-active {
  background-color: var(--border-color);
}

.page-index__guide-section {
  padding-top: 20px;
  margin-bottom: 40px;
}

.page-index__guide-box {
  max-width: 100%;
  margin: 0 auto;
  padding: 16px 20px 24px;
  background: var(--card-bg-color);
  border-radius: 4px;
  box-sizing: border-box;
  border: 2px solid var(--border-color);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

.page-index__guide-box .page-index__section-title.tieudevip {
  margin-top: 15px;
  margin-bottom: 25px;
  font-size: 1.8em;
  padding: 8px 15px;
}

.page-index__guide-grid {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: center;
  gap: 15px;
}

.page-index__guide-card {
  display: block;
  flex: 0 0 calc(20% - 12px);
  max-width: calc(20% - 12px);
  text-decoration: none;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border-radius: 8px;
  overflow: hidden;
}

.page-index__guide-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
}

.page-index__guide-card img {
  width: 100%;
  height: auto;
  aspect-ratio: 250 / 350;
  object-fit: contain;
  display: block;
  border-radius: 8px;
}

.page-index__guide-card--pos-1,
.page-index__guide-card--pos-5 { padding-top: 50px; }
.page-index__guide-card--pos-2,
.page-index__guide-card--pos-4 { padding-top: 25px; }
.page-index__guide-card--pos-3 { padding-top: 0; }

.page-index__home-content-section {
  padding: 40px 0;
  background-color: var(--background-color);
}

.page-index__home-content-row {
  display: flex;
  justify-content: center;
}

.page-index__home-content-box {
  max-width: 91%;
  width: 100%;
  margin: 0 auto;
  padding: 10px 16px;
  border: 5px solid var(--border-color);
  border-radius: 15px;
  box-shadow: 0 0 20px var(--border-color);
  height: 700px;
  text-align: left;
  box-sizing: border-box;
  background-color: var(--card-bg-color);
  color: var(--text-main-color);
}

.page-index__home-content-inner {
  height: 100%;
  overflow-y: auto;
  overflow-x: hidden;
  padding-right: 8px;
}

.page-index__home-content-inner h1,
.page-index__home-content-inner h2,
.page-index__home-content-inner h3 {
  color: var(--text-main-color);
  margin-top: 1em;
  margin-bottom: 0.5em;
}

.page-index__home-content-title {
  font-size: 2.5em;
  font-weight: bold;
  line-height: 1.2;
  letter-spacing: -0.02em;
  max-width: 100%;
  margin-top: 0;
}

.page-index__home-content-inner p,
.page-index__home-content-inner ul,
.page-index__home-content-inner li {
  color: var(--text-main-color);
  margin-bottom: 1em;
}

.page-index__home-content-inner ul {
  list-style-type: disc;
  padding-left: 20px;
}

.page-index__wp-caption {
  margin: 20px auto;
  max-width: 100%;
  text-align: center;
}

.page-index__wp-caption img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
  border-radius: 8px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.page-index__wp-caption figcaption {
  font-size: 0.9em;
  color: var(--text-main-color);
  margin-top: 5px;
}

.page-index__blog-section {
  padding: 40px 0;
  background-color: var(--background-color);
}

.page-index__blog-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 30px;
}

.page-index__blog-card {
  background: var(--card-bg-color);
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-index__blog-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}

.page-index__blog-card-link {
  text-decoration: none;
  display: block;
  color: var(--text-main-color);
}

.page-index__blog-media {
  position: relative;
  overflow: hidden;
  border-top-left-radius: 10px;
  border-top-right-radius: 10px;
}

.page-index__blog-media img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.page-index__blog-card:hover .page-index__blog-media img {
  transform: scale(1.05);
}

.page-index__blog-date {
  position: absolute;
  top: 10px;
  right: 10px;
  background: var(--deep-red-color);
  color: var(--text-main-color);
  padding: 5px 10px;
  border-radius: 5px;
  font-size: 0.8em;
  font-weight: bold;
  text-align: center;
  line-height: 1;
}

.page-index__blog-date span:first-child {
  display: block;
  font-size: 1.2em;
}

.page-index__blog-title {
  font-size: 1.2em;
  font-weight: bold;
  margin: 15px 15px 10px;
  line-height: 1.3;
  color: var(--text-main-color);
}

.page-index__blog-excerpt {
  font-size: 0.9em;
  margin: 0 15px 15px;
  color: var(--text-main-color);
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.page-index__app-download-section {
  padding: 40px 0;
  background-color: var(--background-color);
}

.page-index__app-content {
  display: flex;
  align-items: center;
  gap: 30px;
  flex-wrap: wrap;
  justify-content: center;
}

.page-index__app-text {
  flex: 1;
  min-width: 300px;
  color: var(--text-main-color);
}

.page-index__app-text p {
  font-size: 1.1em;
  margin-bottom: 20px;
}

.page-index__app-image {
  flex: 1;
  min-width: 300px;
  max-width: 500px;
  text-align: center;
}

.page-index__app-image img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
  border-radius: 10px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

.page-index__cta-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
  margin-top: 20px;
  justify-content: center;
}

.page-index__btn-primary {
  display: inline-block;
  padding: 12px 25px;
  background: var(--button-gradient);
  color: var(--text-main-color);
  text-decoration: none;
  border-radius: 5px;
  font-weight: bold;
  transition: background-color 0.3s ease, transform 0.2s ease;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
  text-align: center;
  max-width: 100%;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

.page-index__btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.3);
}

.page-index__copyright-info {
  text-align: center;
  padding: 20px;
  font-size: 0.9em;
  color: var(--text-main-color);
  background-color: var(--deep-red-color);
  margin-top: 30px;
}

@media (max-width: 1024px) {
  .page-index__section-title.tieudevip {
    font-size: 2em;
  }

  .page-index__guide-card {
    flex: 0 0 calc(25% - 11.25px);
    max-width: calc(25% - 11.25px);
  }

  .page-index__blog-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-index__home-content-box {
    max-width: 95%;
    height: 600px;
  }
}

@media (max-width: 768px) {
  .page-index__section-content {
    padding: 0 10px;
  }

  .page-index__section-title.tieudevip {
    font-size: 1.5em;
    margin-bottom: 20px;
    padding: 8px 10px;
  }

  .page-index__hero-carousel-section {
    padding-top: 10px !important;
    margin-bottom: 20px;
  }
  .page-index__hero-slider-prev,
  .page-index__hero-slider-next {
    width: 30px;
    height: 30px;
    font-size: 1.2em;
    padding: 5px;
  }
  .page-index__hero-slider-dots {
    bottom: 5px;
  }
  .page-index img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    box-sizing: border-box !important;
  }
  .page-index__section,
  .page-index__card,
  .page-index__container,
  .page-index__guide-box,
  .page-index__home-content-box,
  .page-index__blog-card,
  .page-index__app-content {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 10px;
    padding-right: 10px;
  }

  .page-index__guide-section {
    padding-top: 15px;
    margin-bottom: 30px;
  }
  .page-index__guide-box {
    padding: 10px 10px 15px;
  }
  .page-index__guide-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 10px;
    justify-items: center;
  }
  .page-index__guide-card {
    flex: none;
    max-width: none;
    padding-top: 0 !important;
    margin: 0;
    border-radius: 5px;
  }
  .page-index__guide-card--pos-1,
  .page-index__guide-card--pos-2 { grid-column: span 3; }
  .page-index__guide-card--pos-3,
  .page-index__guide-card--pos-4,
  .page-index__guide-card--pos-5 { grid-column: span 2; }
  .page-index__guide-card img {
    border-radius: 5px;
  }

  .page-index__home-content-section {
    padding: 20px 0;
  }
  .page-index__home-content-box {
    max-width: 100%;
    height: auto;
    padding: 15px;
    border-width: 3px;
  }
  .page-index__home-content-inner {
    height: auto;
    overflow: visible;
    padding-right: 0;
  }
  .page-index__home-content-title {
    font-size: 1.8em;
  }

  .page-index__blog-section {
    padding: 20px 0;
  }
  .page-index__blog-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
  }
  .page-index__blog-card {
    border-radius: 8px;
  }
  .page-index__blog-media {
    border-top-left-radius: 8px;
    border-top-right-radius: 8px;
  }
  .page-index__blog-title {
    font-size: 1.1em;
    margin: 10px;
  }
  .page-index__blog-excerpt {
    margin: 0 10px 10px;
  }
  
  .page-index__app-content {
    flex-direction: column;
    gap: 20px;
  }
  .page-index__app-text,
  .page-index__app-image {
    min-width: unset;
    width: 100%;
  }
  .page-index__app-image img {
    max-width: 80%;
  }

  .page-index__cta-buttons {
    flex-direction: column;
    align-items: center;
    gap: 10px;
  }
  .page-index__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;
  }
}