.page-bnc {
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
  color: var(--text-main);
  background-color: var(--bg);
}

.page-bnc__hero-section {
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 10px 0 60px 0; /* body handles padding-top, use small padding here */
  background-color: var(--deep-green);
  overflow: hidden;
}

.page-bnc__hero-image {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  filter: brightness(0.7); /* Slightly darken image for text readability */
}

.page-bnc__hero-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 10;
  max-width: 90%;
  text-align: center;
  color: var(--text-main);
  padding: 20px;
  box-sizing: border-box;
}

/* Override the absolute positioning for '上图下文' rule */
/* The previous absolute positioning was a mistake based on the '禁止在主图上叠字' rule. */
/* Re-applying '上图下文' means the content should be below the image in normal flow. */
.page-bnc__hero-section {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 10px 0 60px 0;
  background-color: var(--deep-green);
  overflow: hidden;
}

.page-bnc__hero-image {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  filter: brightness(0.7);
}

.page-bnc__hero-content {
  position: relative; /* Changed from absolute */
  top: auto; /* Removed top */
  left: auto; /* Removed left */
  transform: none; /* Removed transform */
  z-index: 1; /* Ensure it's above other elements if any */
  max-width: 1200px;
  width: 100%;
  text-align: center;
  color: var(--text-main);
  padding: 40px 20px;
  box-sizing: border-box;
}

.page-bnc__main-title {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 700;
  margin-bottom: 20px;
  line-height: 1.2;
  color: var(--text-main);
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.page-bnc__hero-description {
  font-size: clamp(1rem, 2vw, 1.25rem);
  margin-bottom: 30px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  color: var(--text-secondary);
}

.page-bnc__cta-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

.page-bnc__btn-primary,
.page-bnc__btn-secondary {
  display: inline-block;
  padding: 15px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 700;
  transition: background-color 0.3s ease, transform 0.2s ease;
  white-space: nowrap;
  max-width: 100%;
  box-sizing: border-box;
  text-align: center;
}

.page-bnc__btn-primary {
  background: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
  color: #ffffff;
  border: none;
}

.page-bnc__btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}

.page-bnc__btn-secondary {
  background: var(--card-bg);
  color: var(--main-color);
  border: 2px solid var(--main-color);
}

.page-bnc__btn-secondary:hover {
  transform: translateY(-2px);
  background: var(--main-color);
  color: #ffffff;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}

.page-bnc__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 20px;
  box-sizing: border-box;
}

.page-bnc__section-title {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  text-align: center;
  margin-bottom: 25px;
  color: var(--gold);
  text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.3);
}

.page-bnc__section-description {
  font-size: 1.1rem;
  text-align: center;
  max-width: 900px;
  margin: 0 auto 40px auto;
  color: var(--text-secondary);
}

.page-bnc__text-block {
  font-size: 1rem;
  margin-bottom: 20px;
  color: var(--text-main);
}

.page-bnc__text-block p {
  margin-bottom: 15px;
}

.page-bnc__intro-section {
  background-color: var(--bg);
  color: var(--text-main);
}

.page-bnc__games-section {
  background-color: var(--card-bg);
  color: var(--text-main);
  padding: 60px 0;
}

.page-bnc__game-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.page-bnc__game-card {
  background-color: var(--deep-green);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.4);
  text-align: center;
  padding-bottom: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.page-bnc__game-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
  margin-bottom: 15px;
}

.page-bnc__game-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--gold);
  margin: 15px 15px 10px 15px;
}

.page-bnc__game-description {
  font-size: 0.95rem;
  color: var(--text-secondary);
  padding: 0 15px 15px 15px;
  flex-grow: 1;
}

.page-bnc__game-card .page-bnc__btn-primary {
  margin: 0 15px;
  width: calc(100% - 30px);
}

.page-bnc__guide-section {
  background-color: var(--bg);
  color: var(--text-main);
  padding: 60px 0;
}

.page-bnc__guide-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.page-bnc__step-card {
  background-color: var(--card-bg);
  border-radius: 12px;
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.4);
  padding: 30px;
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.page-bnc__step-title {
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--main-color);
  margin-bottom: 15px;
}

.page-bnc__step-card .page-bnc__btn-secondary {
  margin-top: 20px;
  width: 100%;
}

.page-bnc__promotions-section {
  background-color: var(--card-bg);
  color: var(--text-main);
  padding: 60px 0;
}

.page-bnc__promo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-bottom: 40px;
}

.page-bnc__promo-card {
  background-color: var(--deep-green);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.4);
  text-align: center;
  padding-bottom: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.page-bnc__promo-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
  margin-bottom: 15px;
}

.page-bnc__promo-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--gold);
  margin: 15px 15px 10px 15px;
}

.page-bnc__promo-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  padding: 0 15px 15px 15px;
  flex-grow: 1;
}

.page-bnc__promo-card .page-bnc__btn-primary {
  margin: 0 15px;
  width: calc(100% - 30px);
}

.page-bnc__how-to-claim {
  max-width: 900px;
  margin: 0 auto;
  padding: 20px;
  background-color: var(--deep-green);
  border-radius: 12px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}

.page-bnc__sub-title {
  font-size: 1.8rem;
  font-weight: 600;
  color: var(--main-color);
  margin-bottom: 20px;
  text-align: center;
}

.page-bnc__benefits-section {
  background-color: var(--bg);
  color: var(--text-main);
  padding: 60px 0;
}

.page-bnc__benefit-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.page-bnc__benefit-item {
  background-color: var(--card-bg);
  border-radius: 12px;
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.4);
  padding: 30px;
  text-align: center;
}

.page-bnc__benefit-title {
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--gold);
  margin-bottom: 15px;
}

.page-bnc__benefit-item p {
  color: var(--text-secondary);
}

.page-bnc__cta-bottom {
  text-align: center;
  margin-top: 40px;
}

.page-bnc__faq-section {
  background-color: var(--card-bg);
  color: var(--text-main);
  padding: 60px 0;
}

.page-bnc__faq-list {
  max-width: 900px;
  margin: 0 auto;
}

.page-bnc__faq-item {
  background-color: var(--deep-green);
  border-radius: 8px;
  margin-bottom: 15px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
  overflow: hidden;
}

.page-bnc__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  background-color: var(--deep-green);
  border-bottom: 1px solid var(--divider);
  list-style: none;
}

.page-bnc__faq-question::-webkit-details-marker {
  display: none;
}

.page-bnc__faq-question:hover {
  background-color: var(--main-color);
}

.page-bnc__faq-toggle {
  font-size: 1.5rem;
  line-height: 1;
  transition: transform 0.3s ease;
  color: var(--gold);
}

.page-bnc__faq-item[open] .page-bnc__faq-toggle {
  transform: rotate(45deg);
}

.page-bnc__faq-answer {
  padding: 15px 20px 20px 20px;
  font-size: 1rem;
  color: var(--text-secondary);
  background-color: var(--card-bg);
}

.page-bnc__conclusion-section {
  background-color: var(--bg);
  color: var(--text-main);
  padding: 60px 0;
  text-align: center;
}

.page-bnc__cta-final {
  margin-top: 40px;
}

/* Color Variables */
:root {
  --main-color: #11A84E;
  --secondary-color: #22C768;
  --btn-gradient: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
  --card-bg: #11271B;
  --bg: #08160F;
  --text-main: #F2FFF6;
  --text-secondary: #A7D9B8;
  --border-color: #2E7A4E;
  --glow: #57E38D;
  --gold: #F2C14E;
  --divider: #1E3A2A;
  --deep-green: #0A4B2C;
}

/* Responsive Styles */
@media (max-width: 1024px) {
  .page-bnc__hero-content {
    padding: 30px 15px;
  }
  .page-bnc__main-title {
    font-size: clamp(2rem, 4.5vw, 3rem);
  }
  .page-bnc__hero-description {
    font-size: clamp(0.9rem, 1.8vw, 1.1rem);
  }
  .page-bnc__section-title {
    font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  }
  .page-bnc__game-card, .page-bnc__step-card, .page-bnc__promo-card, .page-bnc__benefit-item {
    padding: 25px;
  }
}

@media (max-width: 768px) {
  .page-bnc__container {
    padding: 30px 15px;
  }
  .page-bnc__hero-content {
    padding: 20px 15px;
  }
  .page-bnc__main-title {
    font-size: clamp(1.8rem, 6vw, 2.5rem);
  }
  .page-bnc__hero-description {
    font-size: clamp(0.9rem, 2.5vw, 1rem);
  }
  .page-bnc__cta-buttons {
    flex-direction: column;
    gap: 15px;
  }
  .page-bnc__btn-primary,
  .page-bnc__btn-secondary {
    width: 100% !important;
    padding: 12px 20px;
    font-size: 1rem;
    white-space: normal !important;
    word-wrap: break-word !important;
  }
  .page-bnc__game-list,
  .page-bnc__guide-steps,
  .page-bnc__promo-grid,
  .page-bnc__benefit-list {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .page-bnc__game-image, .page-bnc__promo-image {
    height: 180px;
  }
  .page-bnc__step-title, .page-bnc__game-title, .page-bnc__promo-title, .page-bnc__benefit-title {
    font-size: 1.4rem;
  }
  .page-bnc__how-to-claim {
    padding: 15px;
  }
  .page-bnc__faq-question {
    font-size: 1rem;
    padding: 15px;
  }
  .page-bnc__faq-answer {
    padding: 10px 15px 15px 15px;
  }
  .page-bnc img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }
  .page-bnc__section, .page-bnc__card, .page-bnc__container, .page-bnc__game-card, .page-bnc__step-card, .page-bnc__promo-card, .page-bnc__benefit-item, .page-bnc__faq-item {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }
  .page-bnc__hero-section, .page-bnc__intro-section, .page-bnc__games-section, .page-bnc__guide-section, .page-bnc__promotions-section, .page-bnc__benefits-section, .page-bnc__faq-section, .page-bnc__conclusion-section {
    padding-left: 0;
    padding-right: 0;
  }
  .page-bnc__hero-section {
    padding-top: 10px !important; 
  }
}