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

.page-bnc {
  font-family: 'Arial', sans-serif;
  color: var(--text-main); /* #F2FFF6 */
  background-color: var(--background); /* #08160F */
  line-height: 1.6;
}

.page-bnc__section {
  padding: 60px 20px;
  text-align: center;
}

.page-bnc__container {
  max-width: 1200px;
  margin: 0 auto;
  box-sizing: border-box;
  padding: 0 15px; /* Added for general container padding */
}

.page-bnc__hero-section {
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 10px; /* Small top padding, body handles header offset */
  background-color: var(--background); /* #08160F */
  overflow: hidden; /* Ensure no overflow from image */
}

.page-bnc__hero-image {
  width: 100%;
  max-width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  margin-bottom: 20px; /* Space between image and content */
}

.page-bnc__hero-content {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 15px 40px;
  z-index: 1;
}

.page-bnc__main-title {
  font-size: clamp(2em, 5vw, 3.5em); /* Responsive H1 */
  color: var(--gold); /* #F2C14E */
  margin-bottom: 20px;
  font-weight: 700;
  line-height: 1.2;
}

.page-bnc__hero-description {
  font-size: 1.2em;
  color: var(--text-secondary); /* #A7D9B8 */
  margin-bottom: 30px;
}

.page-bnc__cta-buttons {
  display: flex;
  flex-wrap: wrap; /* Allow wrapping on small screens */
  justify-content: center;
  gap: 20px;
}

.page-bnc__btn-primary,
.page-bnc__btn-secondary {
  display: inline-block;
  padding: 15px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.1em;
  transition: all 0.3s ease;
  white-space: normal; /* Allow button text to wrap */
  word-wrap: break-word; /* Ensure long words break */
  box-sizing: border-box; /* Include padding in width calculation */
}

.page-bnc__btn-primary {
  background: var(--button-gradient); /* Button color */
  color: #ffffff;
  border: none;
}

.page-bnc__btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-2px);
}

.page-bnc__btn-secondary {
  background: none;
  color: var(--gold); /* #F2C14E */
  border: 2px solid var(--gold); /* #F2C14E */
}

.page-bnc__btn-secondary:hover {
  background: var(--gold); /* #F2C14E */
  color: var(--background); /* #08160F */
  transform: translateY(-2px);
}

.page-bnc__section-title {
  font-size: clamp(1.8em, 4vw, 2.8em);
  color: var(--gold); /* #F2C14E */
  margin-bottom: 40px;
  position: relative;
  padding-bottom: 15px;
}

.page-bnc__section-title::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background-color: var(--deep-green); /* #0A4B2C */
  border-radius: 2px;
}

.page-bnc__text-block {
  font-size: 1.05em;
  color: var(--text-main); /* #F2FFF6 */
  margin-bottom: 20px;
  text-align: left;
}

.page-bnc__features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 40px;
  text-align: left;
}

.page-bnc__card {
  background-color: var(--card-bg); /* #11271B */
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  color: var(--text-main); /* #F2FFF6 */
  border: 1px solid var(--border); /* #2E7A4E */
}

.page-bnc__card-image {
  width: 100%;
  max-width: 100%;
  height: auto;
  min-height: 200px; /* Minimum image size */
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 20px;
}

.page-bnc__card-title {
  font-size: 1.5em;
  color: var(--gold); /* #F2C14E */
  margin-bottom: 10px;
}

.page-bnc__card-text {
  font-size: 1em;
  color: var(--text-secondary); /* #A7D9B8 */
}

.page-bnc__promotion-banner,
.page-bnc__tutorial-image,
.page-bnc__conclusion-image {
  width: 100%;
  max-width: 100%;
  height: auto;
  min-height: 250px; /* Ensure images are not too small */
  object-fit: cover;
  border-radius: 12px;
  margin-bottom: 30px;
  display: block;
}

.page-bnc__promo-list,
.page-bnc__step-list,
.page-bnc__tips-list {
  list-style: none;
  padding: 0;
  margin-bottom: 30px;
  text-align: left;
}

.page-bnc__list-item {
  background-color: var(--card-bg); /* #11271B */
  padding: 15px 20px;
  margin-bottom: 10px;
  border-radius: 8px;
  color: var(--text-main); /* #F2FFF6 */
  border-left: 5px solid var(--deep-green); /* #0A4B2C */
}

.page-bnc__list-item strong {
  color: var(--gold); /* #F2C14E */
}

.page-bnc__faq-list {
  margin-top: 30px;
  text-align: left;
}

.page-bnc__faq-item {
  background-color: var(--card-bg); /* #11271B */
  margin-bottom: 15px;
  border-radius: 8px;
  border: 1px solid var(--border); /* #2E7A4E */
}

.page-bnc__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 25px;
  font-size: 1.15em;
  font-weight: 600;
  color: var(--gold); /* #F2C14E */
  cursor: pointer;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

.page-bnc__faq-item summary {
  list-style: none; /* Remove default marker */
}
.page-bnc__faq-item summary::-webkit-details-marker {
  display: none; /* Remove default marker for Webkit browsers */
}

.page-bnc__faq-qtext {
  flex-grow: 1;
}

.page-bnc__faq-toggle {
  font-size: 1.5em;
  line-height: 1;
  margin-left: 15px;
  transition: transform 0.3s ease;
}

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

.page-bnc__faq-answer {
  padding: 0 25px 20px;
  font-size: 1em;
  color: var(--text-secondary); /* #A7D9B8 */
  line-height: 1.7;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out, padding 0.3s ease-out;
}

.page-bnc__faq-item[open] .page-bnc__faq-answer {
  max-height: 500px; /* Adjust as needed for content */
  padding: 0 25px 25px;
}

/* Responsive Styles */
@media (max-width: 768px) {
  .page-bnc {
    font-size: 16px;
    line-height: 1.6;
  }

  .page-bnc__section {
    padding: 40px 15px;
  }

  .page-bnc__container {
    padding: 0;
  }

  .page-bnc__hero-section {
    padding-top: 10px !important;
    padding-bottom: 30px;
  }

  .page-bnc__main-title {
    font-size: 2em;
    margin-bottom: 15px;
  }

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

  .page-bnc__cta-buttons {
    flex-direction: column;
    gap: 15px;
  }

  .page-bnc__btn-primary,
  .page-bnc__btn-secondary {
    max-width: 100% !important;
    width: 100% !important;
    padding: 12px 20px;
    font-size: 1em;
  }

  .page-bnc__section-title {
    font-size: 1.8em;
    margin-bottom: 30px;
  }

  .page-bnc__features-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .page-bnc__card {
    padding: 20px;
  }

  .page-bnc__card-image {
    min-height: 200px;
  }

  .page-bnc__promotion-banner,
  .page-bnc__tutorial-image,
  .page-bnc__conclusion-image {
    min-height: 200px;
    margin-bottom: 20px;
  }

  /* Mobile image responsiveness */
  .page-bnc img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }

  .page-bnc__section,
  .page-bnc__card,
  .page-bnc__container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  /* Mobile video responsiveness */
  .page-bnc video,
  .page-bnc__video {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }
  
  .page-bnc__video-section,
  .page-bnc__video-container,
  .page-bnc__video-wrapper {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
    overflow: hidden !important;
  }

  .page-bnc__video-section {
    padding-top: 10px !important;
  }

  .page-bnc__video-wrapper {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }
}