.page-bn-c {
  --primary-color: #0A192F;
  --secondary-color: #FFD700;
  --text-light: #FFFFFF;
  --text-dark: #333333;
  --bg-light: #F8F8F8;
  --bg-dark: #1A2A40;
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
}

.page-bn-c-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.page-bn-c-section {
  padding: 60px 0;
  text-align: center;
}

.page-bn-c-section:nth-of-type(odd) {
  background-color: var(--bg-light);
}

.page-bn-c-section:nth-of-type(even) {
  background-color: var(--bg-dark);
  color: var(--text-light);
}

.page-bn-c-section:nth-of-type(even) h2,
.page-bn-c-section:nth-of-type(even) h3 {
  color: var(--secondary-color);
}

.page-bn-c h1 {
  font-size: 3.2em;
  color: var(--secondary-color);
  margin-bottom: 20px;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.page-bn-c h2 {
  font-size: 2.5em;
  color: var(--primary-color);
  margin-bottom: 30px;
  position: relative;
  padding-bottom: 15px;
}

.page-bn-c-section:nth-of-type(even) h2 {
  color: var(--text-light);
}

.page-bn-c h2::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background-color: var(--secondary-color);
  border-radius: 2px;
}

.page-bn-c h3 {
  font-size: 1.8em;
  color: var(--primary-color);
  margin-bottom: 15px;
}

.page-bn-c p {
  font-size: 1.1em;
  margin-bottom: 20px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.page-bn-c-btn {
  display: inline-block;
  padding: 15px 35px;
  background-color: var(--secondary-color);
  color: var(--primary-color);
  text-decoration: none;
  border-radius: 8px;
  font-weight: bold;
  font-size: 1.1em;
  transition: all 0.3s ease;
  border: 2px solid var(--secondary-color);
}

.page-bn-c-btn:hover {
  background-color: var(--primary-color);
  color: var(--secondary-color);
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.page-bn-c-btn-centered {
  margin-top: 30px;
}

.page-bn-c-btn-small {
  padding: 10px 25px;
  font-size: 1em;
  margin-top: 15px;
}

/* Hero Section */
.page-bn-c-hero {
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 80px 20px;
  overflow: hidden;
  background: linear-gradient(135deg, #0A192F, #1A2A40);
}

.page-bn-c-hero-container {
  position: relative;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.page-bn-c-hero-image {
  width: 100%;
  height: auto;
  max-width: 100%;
  display: block;
  border-radius: 12px;
  object-fit: cover;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  margin-bottom: 40px;
  filter: brightness(0.8); /* Làm mờ ảnh để chữ nổi bật */
  transition: filter 0.3s ease;
}

.page-bn-c-hero-image:hover {
  filter: brightness(1); /* Sáng hơn khi hover */
}

.page-bn-c-hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  width: 100%;
  color: var(--text-light);
}

.page-bn-c-hero-content h1 {
  font-size: 3.8em;
  color: var(--secondary-color);
  margin-bottom: 25px;
  line-height: 1.2;
}

.page-bn-c-hero-content p {
  font-size: 1.3em;
  margin-bottom: 35px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  color: #E0E0E0;
}

.page-bn-c-cta-button {
  display: inline-block;
  padding: 18px 45px;
  background: var(--secondary-color);
  color: var(--primary-color);
  text-decoration: none;
  border-radius: 10px;
  font-size: 1.4em;
  font-weight: bold;
  margin-top: 20px;
  transition: all 0.3s ease;
  box-shadow: 0 8px 20px rgba(255, 215, 0, 0.4);
  border: none;
}

.page-bn-c-cta-button:hover {
  background: #FFEB3B;
  transform: translateY(-5px) scale(1.02);
  box-shadow: 0 12px 25px rgba(255, 215, 0, 0.6);
}

/* Features Grid */
.page-bn-c-features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-bn-c-feature-item {
  background-color: var(--text-light);
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  text-align: center;
}

.page-bn-c-section:nth-of-type(even) .page-bn-c-feature-item {
  background-color: var(--primary-color);
  color: var(--text-light);
}

.page-bn-c-section:nth-of-type(even) .page-bn-c-feature-item h3 {
  color: var(--secondary-color);
}

.page-bn-c-feature-item:hover {
  transform: translateY(-10px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.page-bn-c-feature-icon {
  width: 100px;
  height: 100px;
  margin-bottom: 20px;
  object-fit: contain;
}

/* Game Grid */
.page-bn-c-game-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-bn-c-game-card {
  background-color: var(--text-light);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  text-align: center;
}

.page-bn-c-section:nth-of-type(even) .page-bn-c-game-card {
  background-color: var(--primary-color);
  color: var(--text-light);
}

.page-bn-c-section:nth-of-type(even) .page-bn-c-game-card h3 {
  color: var(--secondary-color);
}

.page-bn-c-game-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.page-bn-c-game-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.page-bn-c-game-card h3 {
  margin: 20px 0 10px;
  font-size: 1.5em;
}

.page-bn-c-game-card h3 a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color 0.3s ease;
}

.page-bn-c-section:nth-of-type(even) .page-bn-c-game-card h3 a {
  color: var(--secondary-color);
}

.page-bn-c-game-card h3 a:hover {
  color: var(--secondary-color);
}

.page-bn-c-game-card p {
  font-size: 0.95em;
  padding: 0 20px 20px;
  margin-bottom: 0;
}

/* Strategy Grid */
.page-bn-c-strategy-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-bn-c-strategy-item {
  background-color: var(--text-light);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  text-align: center;
}

.page-bn-c-section:nth-of-type(even) .page-bn-c-strategy-item {
  background-color: var(--primary-color);
  color: var(--text-light);
}

.page-bn-c-section:nth-of-type(even) .page-bn-c-strategy-item h3 {
  color: var(--secondary-color);
}

.page-bn-c-strategy-item:hover {
  transform: translateY(-10px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.page-bn-c-strategy-image {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.page-bn-c-strategy-item h3 {
  margin: 20px 0 10px;
  font-size: 1.5em;
}

.page-bn-c-strategy-item h3 a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color 0.3s ease;
}

.page-bn-c-section:nth-of-type(even) .page-bn-c-strategy-item h3 a {
  color: var(--secondary-color);
}

.page-bn-c-strategy-item h3 a:hover {
  color: var(--secondary-color);
}

.page-bn-c-strategy-item p {
  font-size: 0.95em;
  padding: 0 20px 20px;
  margin-bottom: 0;
}

/* Promo Grid */
.page-bn-c-promo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-bn-c-promo-card {
  background-color: var(--text-light);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  text-align: center;
}

.page-bn-c-section:nth-of-type(even) .page-bn-c-promo-card {
  background-color: var(--primary-color);
  color: var(--text-light);
}

.page-bn-c-section:nth-of-type(even) .page-bn-c-promo-card h3 {
  color: var(--secondary-color);
}

.page-bn-c-promo-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.page-bn-c-promo-image {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.page-bn-c-promo-card h3 {
  margin: 20px 0 10px;
  font-size: 1.5em;
}

.page-bn-c-promo-card h3 a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color 0.3s ease;
}

.page-bn-c-section:nth-of-type(even) .page-bn-c-promo-card h3 a {
  color: var(--secondary-color);
}

.page-bn-c-promo-card h3 a:hover {
  color: var(--secondary-color);
}

.page-bn-c-promo-card p {
  font-size: 0.95em;
  padding: 0 20px 20px;
  margin-bottom: 0;
}

/* How-to-play Steps */
.page-bn-c-step-list {
  list-style: none;
  padding: 0;
  margin-top: 40px;
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.page-bn-c-step-list li {
  background-color: var(--text-light);
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  text-align: left;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.page-bn-c-section:nth-of-type(even) .page-bn-c-step-list li {
  background-color: var(--primary-color);
  color: var(--text-light);
}

.page-bn-c-section:nth-of-type(even) .page-bn-c-step-list li h3 {
  color: var(--secondary-color);
}

.page-bn-c-step-list li h3 {
  font-size: 1.8em;
  color: var(--primary-color);
  margin-top: 0;
  margin-bottom: 10px;
}

.page-bn-c-step-list li p {
  font-size: 1.1em;
  margin-bottom: 15px;
  max-width: none;
}

/* FAQ Section */
.page-bn-c-faq-list {
  margin-top: 40px;
  text-align: left;
}

.faq-item {
  margin-bottom: 15px;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.page-bn-c-section:nth-of-type(even) .faq-item {
  border-color: #3A4A60;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 25px;
  background: #fff;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

.page-bn-c-section:nth-of-type(even) .faq-question {
  background: var(--primary-color);
  color: var(--text-light);
}

.page-bn-c-section:nth-of-type(even) .faq-question h3 {
  color: var(--text-light);
}

.faq-question:hover {
  background: #f5f5f5;
}

.page-bn-c-section:nth-of-type(even) .faq-question:hover {
  background: #2A3B50;
}

.faq-question h3 {
  margin: 0;
  font-size: 1.25em;
  color: var(--primary-color);
}

.page-bn-c-section:nth-of-type(even) .faq-question h3 {
  color: var(--text-light);
}

.faq-toggle {
  font-size: 24px;
  font-weight: bold;
  color: var(--secondary-color);
  transition: transform 0.3s ease;
  line-height: 1;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease-out, padding 0.4s ease-out;
  padding: 0 25px;
  background: #f9f9f9;
  color: var(--text-dark);
}

.page-bn-c-section:nth-of-type(even) .faq-answer {
  background: #2A3B50;
  color: #E0E0E0;
}

.faq-item.active .faq-answer {
  max-height: 500px; /* Sufficient height for content */
  padding: 15px 25px;
}

.faq-item.active .faq-toggle {
  transform: rotate(45deg);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .page-bn-c h1 {
    font-size: 2.8em;
  }
  .page-bn-c h2 {
    font-size: 2em;
  }
  .page-bn-c h3 {
    font-size: 1.6em;
  }
  .page-bn-c-hero-content h1 {
    font-size: 3em;
  }
  .page-bn-c-hero-content p {
    font-size: 1.1em;
  }
  .page-bn-c-cta-button {
    font-size: 1.2em;
    padding: 15px 35px;
  }
}

@media (max-width: 768px) {
  .page-bn-c-section {
    padding: 40px 0;
  }
  .page-bn-c h1 {
    font-size: 2.2em;
  }
  .page-bn-c h2 {
    font-size: 1.8em;
  }
  .page-bn-c h3 {
    font-size: 1.4em;
  }
  .page-bn-c p {
    font-size: 1em;
  }
  .page-bn-c-hero-content h1 {
    font-size: 2.5em;
  }
  .page-bn-c-hero-content p {
    font-size: 1em;
  }
  .page-bn-c-cta-button {
    font-size: 1.1em;
    padding: 12px 30px;
  }
  .page-bn-c-features-grid, .page-bn-c-game-grid, .page-bn-c-strategy-grid, .page-bn-c-promo-grid {
    grid-template-columns: 1fr;
  }
  .page-bn-c-feature-icon {
    width: 80px;
    height: 80px;
  }
  .page-bn-c-step-list li {
    padding: 20px;
  }
  .faq-question {
    padding: 15px 20px;
  }
  .faq-question h3 {
    font-size: 1.1em;
  }
  .faq-answer {
    padding: 0 20px;
  }
  .faq-item.active .faq-answer {
    padding: 15px 20px;
  }
}

@media (max-width: 480px) {
  .page-bn-c h1 {
    font-size: 1.8em;
  }
  .page-bn-c-hero-content h1 {
    font-size: 2em;
  }
  .page-bn-c-cta-button {
    font-size: 1em;
    padding: 10px 25px;
  }
  .page-bn-c-btn {
    padding: 10px 20px;
    font-size: 1em;
  }
  .page-bn-c-btn-small {
    padding: 8px 18px;
    font-size: 0.9em;
  }
}