:root {
  --primary-color: #FF8C1A;
  --secondary-color: #FFA53A;
  --btn-gradient: linear-gradient(180deg, #FFA53A 0%, #D96800 100%);
  --card-bg-color: #17191F;
  --bg-color: #0D0E12;
  --text-main-color: #FFF3E6;
  --border-color: #A84F0C;
  --glow-color: #FFB04D;
  --deep-orange-color: #D96800;
}

.page-game-bai-tien-len {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-main-color); /* Light text on dark body background */
  background-color: var(--bg-color);
}

.page-game-bai-tien-len__article-wrap {
  max-width: 1150px;
  margin: 0 auto;
  padding: 0 20px;
  box-sizing: border-box;
}

.page-game-bai-tien-len__top-section {
  padding-top: 10px; /* Small top padding, body handles header offset */
  padding-bottom: 40px;
  text-align: center;
}

.page-game-bai-tien-len__top-title {
  font-size: clamp(2.2em, 4vw, 3.5em);
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 20px;
  line-height: 1.2;
}

.page-game-bai-tien-len__top-description {
  font-size: 1.1em;
  margin-bottom: 30px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.page-game-bai-tien-len__cta-buttons {
  display: flex;
  gap: 15px;
  justify-content: center;
  flex-wrap: wrap;
}

.page-game-bai-tien-len__btn {
  display: inline-block;
  padding: 14px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.05em;
  transition: all 0.3s ease;
  cursor: pointer;
  box-sizing: border-box;
  text-align: center;
  border: none;
}

.page-game-bai-tien-len__btn--primary {
  background: var(--btn-gradient);
  color: #ffffff;
  box-shadow: 0 4px 15px rgba(255, 140, 26, 0.4);
}

.page-game-bai-tien-len__btn--primary:hover {
  opacity: 0.9;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 140, 26, 0.6);
}

.page-game-bai-tien-len__btn--secondary {
  background-color: var(--card-bg-color);
  color: var(--primary-color);
  border: 1px solid var(--primary-color);
}

.page-game-bai-tien-len__btn--secondary:hover {
  background-color: var(--primary-color);
  color: #ffffff;
}

.page-game-bai-tien-len__section {
  padding: 60px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.page-game-bai-tien-len__section-title {
  font-size: 2.5em;
  color: var(--secondary-color);
  text-align: center;
  margin-bottom: 40px;
  font-weight: 700;
}

.page-game-bai-tien-len__sub-title {
  font-size: 1.8em;
  color: var(--primary-color);
  margin-top: 30px;
  margin-bottom: 20px;
  font-weight: 600;
}

.page-game-bai-tien-len__text-block {
  font-size: 1.05em;
  margin-bottom: 20px;
  color: var(--text-main-color);
}

.page-game-bai-tien-len strong {
  color: var(--primary-color);
}

.page-game-bai-tien-len a {
  color: var(--secondary-color);
  text-decoration: none;
}

.page-game-bai-tien-len a:hover {
  text-decoration: underline;
}

.page-game-bai-tien-len__figure {
  margin: 30px auto;
  text-align: center;
  max-width: 680px;
}

.page-game-bai-tien-len__image {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
  margin: 0 auto;
}

.page-game-bai-tien-len__wp-caption {
  font-size: 0.9em;
  color: rgba(255, 243, 230, 0.7);
  margin-top: 10px;
}

.page-game-bai-tien-len__list {
  list-style: disc;
  margin-left: 25px;
  margin-bottom: 20px;
  color: var(--text-main-color);
}

.page-game-bai-tien-len__list li {
  margin-bottom: 10px;
}

.page-game-bai-tien-len__promo-box {
  background-color: var(--card-bg-color);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 30px;
  margin-top: 40px;
  text-align: center;
  box-shadow: 0 0 25px var(--glow-color) inset;
}

.page-game-bai-tien-len__promo-title {
  font-size: 2em;
  color: var(--secondary-color);
  margin-bottom: 15px;
}

.page-game-bai-tien-len__promo-text {
  font-size: 1.1em;
  margin-bottom: 25px;
  color: var(--text-main-color);
}

.page-game-bai-tien-len__registration-steps {
  list-style: none;
  padding: 0;
  margin: 40px 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
}

.page-game-bai-tien-len__registration-step {
  background-color: var(--card-bg-color);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 25px;
  text-align: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-game-bai-tien-len__step-title {
  font-size: 1.5em;
  color: var(--primary-color);
  margin-bottom: 15px;
}

.page-game-bai-tien-len__registration-step p {
  font-size: 1em;
  color: var(--text-main-color);
}

.page-game-bai-tien-len__faq-item {
  background-color: var(--card-bg-color);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  margin-bottom: 15px;
  padding: 20px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.page-game-bai-tien-len__faq-question {
  font-size: 1.2em;
  color: var(--secondary-color);
  margin-bottom: 10px;
  font-weight: 600;
}

.page-game-bai-tien-len__faq-answer {
  font-size: 1em;
  color: var(--text-main-color);
}

.page-game-bai-tien-len__cta-buttons--bottom {
  margin-top: 50px;
}

/* Mobile responsive styles */
@media (max-width: 768px) {
  /* 1. Top section padding/spacing */
  .page-game-bai-tien-len__top-section {
    padding-top: 10px !important;
    padding-bottom: 30px;
  }
  .page-game-bai-tien-len__top-title {
    font-size: 2em;
    margin-bottom: 15px;
  }
  .page-game-bai-tien-len__top-description {
    font-size: 1em;
    margin-bottom: 20px;
  }
  .page-game-bai-tien-len__cta-buttons {
    flex-direction: column;
    gap: 10px;
  }
  .page-game-bai-tien-len__btn {
    width: 100% !important;
    max-width: 100% !important;
    padding: 12px 20px;
    font-size: 1em;
    white-space: normal !important;
    word-wrap: break-word !important;
  }

  /* 2. Single column long text container */
  .page-game-bai-tien-len__article-wrap {
    padding: 0 15px !important;
  }
  .page-game-bai-tien-len__section {
    padding: 40px 0;
  }
  .page-game-bai-tien-len__section-title {
    font-size: 2em;
    margin-bottom: 30px;
  }
  .page-game-bai-tien-len__sub-title {
    font-size: 1.5em;
    margin-top: 25px;
    margin-bottom: 15px;
  }
  .page-game-bai-tien-len__text-block {
    font-size: 0.95em;
  }
  .page-game-bai-tien-len__info-card,
  .page-game-bai-tien-len__promo-box,
  .page-game-bai-tien-len__registration-step,
  .page-game-bai-tien-len__faq-item {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  /* 3. General images and figure */
  .page-game-bai-tien-len img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }
  .page-game-bai-tien-len figure {
    margin: 20px auto;
  }
  .page-game-bai-tien-len__wp-caption {
    font-size: 0.85em;
  }

  /* 4. Buttons and button containers */
  .page-game-bai-tien-len a[class*="button"],
  .page-game-bai-tien-len 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-game-bai-tien-len__cta-buttons,
  .page-game-bai-tien-len__button-group,
  .page-game-bai-tien-len__btn-container {
    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-game-bai-tien-len__cta-buttons {
    flex-direction: column;
  }

  /* 5. Registration tutorial and FAQ block */
  .page-game-bai-tien-len__registration-steps {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .page-game-bai-tien-len__registration-step {
    padding: 20px;
  }
  .page-game-bai-tien-len__step-title {
    font-size: 1.3em;
  }
  .page-game-bai-tien-len__faq-question {
    font-size: 1.1em;
  }
  .page-game-bai-tien-len__faq-answer {
    font-size: 0.95em;
  }
  .page-game-bai-tien-len ul,
  .page-game-bai-tien-len ol {
    margin-left: 20px;
  }
}