:root {
  --primary-color: #2F6BFF;
  --secondary-color: #6FA3FF;
  --button-gradient: linear-gradient(180deg, #4A8BFF 0%, #2F6BFF 100%);
  --card-bg: #FFFFFF;
  --body-bg: #F4F7FB;
  --text-main: #1F2D3D;
  --text-black: #000000;
  --border-color: #D6E2FF;
  --glow-color: #A5C4FF;
}

.page-index {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-main); /* Based on light body background */
  background-color: var(--body-bg);
}

.page-index__section {
  padding: 40px 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 {
  text-align: center;
  margin-bottom: 30px;
  font-size: 2.5em;
  font-weight: bold;
  color: var(--text-black);
}

.tieudevip {
  color: var(--primary-color);
  font-size: 2.2em;
  font-weight: 700;
  padding: 10px 20px;
  border: 2px solid var(--primary-color);
  border-radius: 8px;
  display: inline-block;
  margin: 0 auto 30px auto;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  text-transform: uppercase;
  letter-spacing: 1px;
  background-color: var(--card-bg);
}

.page-index__btn-primary {
  display: inline-block;
  padding: 12px 25px;
  background: var(--button-gradient);
  color: #ffffff;
  text-decoration: none;
  border-radius: 8px;
  font-weight: bold;
  transition: background-color 0.3s ease;
  border: none;
  cursor: pointer;
  text-align: center;
  max-width: 100%;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

.page-index__btn-primary:hover {
  background: linear-gradient(180deg, #2F6BFF 0%, #4A8BFF 100%);
}

/* Hero Carousel */
.page-index__hero-carousel-section {
  padding-top: 10px; /* Assuming body has padding-top from shared */
  margin-bottom: 0;
  background-color: var(--body-bg);
}

.page-index__hero-slider {
  position: relative;
  max-width: 1020px; /* Adjust based on image width */
  margin: 0 auto;
  overflow: hidden;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.page-index__hero-slide {
  display: none;
  width: 100%;
}

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

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

.page-index__hero-slider-prev,
.page-index__hero-slider-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background-color: rgba(0, 0, 0, 0.5);
  color: white;
  border: none;
  padding: 10px 15px;
  cursor: pointer;
  z-index: 10;
  font-size: 1.5em;
  border-radius: 5px;
}

.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;
}

.page-index__hero-slider-dots button {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.5);
  border: none;
  cursor: pointer;
  padding: 0;
}

.page-index__hero-slider-dots button.is-active {
  background-color: var(--primary-color);
}

/* Guide Section */
.page-index__guide-section {
  padding-top: 20px;
  padding-bottom: 40px;
  background-color: var(--body-bg);
}

.page-index__guide-box {
  max-width: 100%;
  margin: 0 auto;
  padding: 16px 20px 24px;
  background: #f5e6d3; /* Light beige background */
  border-radius: 4px;
  box-sizing: border-box;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
  text-align: center;
}

.page-index__guide-grid {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: center;
  gap: 8px;
  margin-top: 20px;
}

.page-index__guide-card {
  display: block;
  flex: 0 0 calc(20% - 8px);
  max-width: calc(20% - 8px);
  text-decoration: none;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border-radius: 5px;
  overflow: hidden;
}

.page-index__guide-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

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

/* PC错落：中间高、两边平行 */
.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; }

/* Home Content Section */
.page-index__home-content-section {
  padding-top: 20px;
  padding-bottom: 40px;
  background-color: var(--body-bg);
}

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

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

.page-index__home-content-inner {
  height: 100%;
  overflow-y: auto;
  overflow-x: hidden;
  padding-right: 8px; /* For scrollbar */
  box-sizing: border-box;
}

.page-index__home-content-title {
  font-size: clamp(1.8em, 2.5vw, 2.5em); /* Use clamp for H1 */
  font-weight: bold;
  color: var(--text-black);
  margin-bottom: 20px;
  line-height: 1.2;
  text-align: center;
}

.page-index__home-content-box h2 {
  font-size: 1.8em;
  color: var(--primary-color);
  margin-top: 30px;
  margin-bottom: 15px;
}

.page-index__home-content-box h3 {
  font-size: 1.4em;
  color: var(--text-black);
  margin-top: 25px;
  margin-bottom: 10px;
}

.page-index__home-content-box p {
  margin-bottom: 15px;
  color: var(--text-main);
}

.page-index__home-content-box ul,
.page-index__home-content-box ol {
  margin-bottom: 15px;
  padding-left: 20px;
  color: var(--text-main);
}

.page-index__home-content-box ul li,
.page-index__home-content-box ol li {
  margin-bottom: 8px;
}

.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, 0.1);
}

.page-index__wp-caption figcaption {
  font-style: italic;
  font-size: 0.9em;
  color: #666;
  margin-top: 10px;
}

/* Blog Section */
.page-index__blog-section {
  padding-top: 20px;
  padding-bottom: 40px;
  background-color: var(--body-bg);
}

.page-index__blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.page-index__blog-card {
  background-color: var(--card-bg);
  border-radius: 15px;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  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, 0.2);
}

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

.page-index__blog-media {
  position: relative;
  height: 200px; /* Fixed height for consistent card appearance */
  overflow: hidden;
}

.page-index__blog-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-top-left-radius: 15px;
  border-top-right-radius: 15px;
  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: 15px;
  right: 15px;
  background-color: var(--primary-color);
  color: white;
  padding: 8px 10px;
  border-radius: 8px;
  font-size: 0.85em;
  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-date span:last-child { display: block; font-size: 0.8em; }

.page-index__blog-title {
  font-size: 1.2em;
  font-weight: bold;
  color: var(--text-black);
  padding: 15px 15px 0;
  margin-top: 0;
  margin-bottom: 10px;
}

.page-index__blog-excerpt {
  font-size: 0.9em;
  color: #666;
  padding: 0 15px 15px;
  margin-bottom: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.page-index__view-all-button-container {
  text-align: center;
  margin-top: 30px;
}

/* App Download Section */
.page-index__app-download-section {
  padding-top: 20px;
  padding-bottom: 60px;
  background-color: var(--body-bg);
}

.page-index__app-description {
  text-align: center;
  font-size: 1.1em;
  color: var(--text-main);
  margin-bottom: 30px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.page-index__app-download-grid {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
}

.page-index__app-image-container {
  flex: 1;
  min-width: 300px;
  max-width: 400px;
  text-align: center;
}

.page-index__app-image-container img {
  max-width: 100%;
  height: auto;
  border-radius: 15px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

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

.page-index__app-cta-container p {
  font-size: 1.2em;
  color: var(--text-black);
  margin-bottom: 20px;
}

.page-index__app-buttons {
  display: flex;
  flex-direction: column;
  gap: 15px;
  max-width: 300px;
  margin: 0 auto;
}

.page-index__btn-app {
  width: 100%;
}

/* General image and button responsive styles */
.page-index img {
  max-width: 100%;
  height: auto;
  display: block;
}

.page-index__section-content,
.page-index__home-content-box,
.page-index__guide-box,
.page-index__blog-card,
.page-index__app-download-section {
  max-width: 100%;
  width: 100%;
  box-sizing: border-box;
}

/* Media Queries for Mobile (max-width: 768px) */
@media (max-width: 768px) {
  .page-index {
    font-size: 15px;
    line-height: 1.5;
  }

  .page-index__section {
    padding: 20px 0;
    margin-bottom: 15px;
  }

  .page-index__section-content {
    padding: 0 10px;
  }

  .page-index__section-title {
    font-size: 2em;
    margin-bottom: 20px;
  }

  .tieudevip {
    font-size: 1.6em;
    padding: 8px 15px;
    margin-bottom: 20px;
  }

  /* Hero Carousel Mobile */
  .page-index__hero-carousel-section {
    padding-top: 10px !important;
  }

  .page-index__hero-slider {
    border-radius: 5px;
  }

  .page-index__hero-slider-prev,
  .page-index__hero-slider-next {
    padding: 8px 12px;
    font-size: 1.2em;
  }

  .page-index__hero-slider-dots {
    bottom: 5px;
    gap: 5px;
  }

  .page-index__hero-slider-dots button {
    width: 8px;
    height: 8px;
  }

  /* Guide Section Mobile */
  .page-index__guide-section {
    padding-top: 15px;
    padding-bottom: 20px;
  }

  .page-index__guide-box {
    padding: 15px;
  }

  .page-index__guide-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 8px;
    margin-top: 15px;
  }

  .page-index__guide-card {
    flex: none;
    max-width: none;
    padding-top: 0 !important; /* Reset PC specific padding */
  }

  /* Mobile: 2 cards then 3 cards */
  .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 {
    aspect-ratio: 250 / 350; /* Maintain aspect ratio */
    object-fit: contain;
  }

  /* Home Content Mobile */
  .page-index__home-content-section {
    padding-top: 15px;
    padding-bottom: 20px;
  }

  .page-index__home-content-box {
    max-width: 100%;
    height: auto; /* Auto height for mobile */
    padding: 15px;
    border-radius: 10px;
    border-width: 3px;
    box-shadow: 0 0 10px var(--primary-color);
  }

  .page-index__home-content-inner {
    height: auto; /* Visible overflow for mobile */
    overflow: visible;
    padding-right: 0;
  }

  .page-index__home-content-title {
    font-size: 1.8em;
    margin-bottom: 15px;
  }

  .page-index__home-content-box h2 {
    font-size: 1.5em;
    margin-top: 25px;
    margin-bottom: 10px;
  }

  .page-index__home-content-box h3 {
    font-size: 1.2em;
    margin-top: 20px;
    margin-bottom: 8px;
  }

  .page-index__home-content-box p,
  .page-index__home-content-box ul,
  .page-index__home-content-box ol {
    font-size: 0.95em;
  }

  /* Blog Section Mobile */
  .page-index__blog-section {
    padding-top: 15px;
    padding-bottom: 20px;
  }

  .page-index__blog-grid {
    grid-template-columns: repeat(1, 1fr); /* 1 column for mobile */
    gap: 15px;
  }

  .page-index__blog-card {
    border-radius: 10px;
  }

  .page-index__blog-media {
    height: 180px;
  }

  .page-index__blog-title {
    font-size: 1.1em;
    padding: 10px 10px 0;
  }

  .page-index__blog-excerpt {
    padding: 0 10px 10px;
  }

  /* App Download Mobile */
  .page-index__app-download-section {
    padding-top: 15px;
    padding-bottom: 30px;
  }

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

  .page-index__app-download-grid {
    flex-direction: column;
    gap: 20px;
  }

  .page-index__app-image-container,
  .page-index__app-cta-container {
    min-width: unset;
    max-width: 100%;
  }

  .page-index__app-buttons {
    max-width: 250px;
  }

  /* Universal Mobile Image & Button Adaptation */
  .page-index img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }

  .page-index__section-content,
  .page-index__card,
  .page-index__container,
  .page-index__guide-box,
  .page-index__home-content-box,
  .page-index__blog-card,
  .page-index__app-download-section {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  .page-index__btn-primary,
  .page-index a[class*="button"],
  .page-index a[class*="btn"] {
    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;
  }

  .page-index__cta-buttons,
  .page-index__button-group,
  .page-index__btn-container,
  .page-index__app-buttons {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
    flex-wrap: wrap !important;
    gap: 10px;
  }

  .page-index__app-buttons {
    flex-direction: column !important;
  }
}