:root {
  --bo-canvas: #090d16;
  --bo-surface: #121824;
  --bo-surface-card: #1b2336;
  --bo-accent: #00e5ff;
  --bo-accent-hover: #00b8d4;
  --bo-accent-glow: rgba(0, 229, 255, 0.15);
  --bo-ink-primary: #ffffff;
  --bo-ink-secondary: #94a3b8;
  --bo-ink-muted: #64748b;
  --bo-border: #242f49;
  
  --bo-font-heading: 'Montserrat', sans-serif;
  --bo-font-text: 'Poppins', sans-serif;
  
  --bo-max-width: 1180px;
  --bo-radius: 16px; /* soft format style (12-20px) */
  --bo-shadow: 0 15px 40px -10px rgba(0, 0, 0, 0.8), 0 0 25px rgba(0, 229, 255, 0.15); /* deep shadow style with spread */
}

/* Custom Base Resets */
*, *::before, *::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--bo-canvas);
  color: var(--bo-ink-primary);
  font-family: var(--bo-font-text);
  line-height: 1.6;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--bo-font-heading);
  color: var(--bo-ink-primary);
  text-transform: uppercase; /* uppercase heading configured */
  margin-top: 0;
}

/* Base abstract backgrounds */
.bo-bg-pattern {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

/* Header Section */
.bo-masthead-bar {
  background: var(--bo-surface);
  border-bottom: 1px solid var(--bo-border);
  width: 100%;
  position: relative;
  z-index: 20;
}

.bo-masthead-inner {
  max-width: var(--bo-max-width);
  margin: 0 auto;
  padding: 1.25rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.bo-logo-section {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.bo-logo-icon {
  width: 32px;
  height: 32px;
  color: var(--bo-ink-primary);
}

.bo-logo-text {
  font-family: var(--bo-font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--bo-ink-primary);
  letter-spacing: 0.05em;
}

.bo-header-decor {
  display: none;
}

@media (min-width: 1024px) {
  .bo-header-decor {
    display: block;
  }
}

/* Main Content Wrapper */
.bo-main-canvas {
  width: 100%;
  max-width: var(--bo-max-width);
  margin: 0 auto;
  padding: 1.5rem;
  position: relative;
  z-index: 10;
  flex: 1;
}

/* Preset A: Split Sticky Product Block Grid */
.bo-item-split {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
  margin-top: 1rem;
  margin-bottom: 3rem;
}

@media (min-width: 1024px) {
  .bo-item-split {
    flex-direction: row;
    align-items: flex-start;
    gap: 4rem;
    margin-top: 3rem;
    margin-bottom: 5rem;
  }
  .bo-visual-sticky {
    position: sticky;
    top: 3rem;
    width: 40%;
    flex-shrink: 0;
    align-self: flex-start;
  }
  .bo-scrolling-content {
    width: 60%;
  }
}

/* Visual frame */
.bo-visual-frame {
  position: relative;
  background-color: var(--bo-surface);
  border: 1px solid var(--bo-border);
  border-radius: var(--bo-radius);
  padding: 2.5rem;
  display: flex;
  justify-content: center;
  align-items: center;
  box-shadow: var(--bo-shadow);
  overflow: hidden;
}

.bo-visual-bg-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 250px;
  height: 250px;
  background: radial-gradient(circle, var(--bo-accent-glow) 0%, transparent 70%);
  z-index: 1;
  pointer-events: none;
}

.bo-visual-photo {
  max-width: 100%;
  height: auto;
  object-fit: contain;
  z-index: 2;
  transition: transform 0.4s ease;
}

.bo-visual-frame:hover .bo-visual-photo {
  transform: scale(1.05) rotate(1deg);
}

/* Scrolling context details */
.bo-main-header {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 0.5rem;
  letter-spacing: 0.05em;
  color: var(--bo-ink-primary);
  background: linear-gradient(120deg, var(--bo-ink-primary) 40%, var(--bo-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.bo-sub-header {
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--bo-accent);
  margin-bottom: 2rem;
}

.bo-desc-panel {
  background: var(--bo-surface);
  border: 1px solid var(--bo-border);
  padding: 1.5rem;
  border-radius: var(--bo-radius);
  margin-bottom: 2rem;
  box-shadow: var(--bo-shadow);
}

.bo-desc-panel p {
  color: var(--bo-ink-secondary);
  font-size: 0.975rem;
  margin: 0;
  line-height: 1.7;
}

/* Features List inside product content */
.bo-bullet-list {
  list-style: none;
  padding: 0;
  margin: 2rem 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.bo-bullet-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.bo-bullet-icon {
  width: 20px;
  height: 20px;
  color: var(--bo-accent);
  flex-shrink: 0;
  margin-top: 0.2rem;
}

.bo-bullet-phrase {
  font-size: 0.95rem;
  color: var(--bo-ink-secondary);
  line-height: 1.5;
}

/* Guarantee protection shield badge (icon-left layout) */
.bo-shield-badge {
  display: flex;
  align-items: center;
  gap: 1rem;
  border: 1px dashed var(--bo-accent-glow);
  background: var(--bo-surface-card);
  padding: 1rem 1.25rem;
  border-radius: var(--bo-radius);
  margin: 2rem 0;
}

.bo-shield-icon {
  width: 28px;
  height: 28px;
  color: var(--bo-accent);
  flex-shrink: 0;
}

.bo-shield-phrase {
  font-size: 0.85rem;
  color: var(--bo-ink-secondary);
  font-weight: 500;
  line-height: 1.4;
}

/* Price and button block layout */
.bo-transaction-deck {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-top: 2rem;
}

@media (min-width: 640px) {
  .bo-transaction-deck {
    flex-direction: row;
    align-items: center;
    gap: 2rem;
  }
}

/* Price badge (accent background display) */
.bo-price-badge {
  background: var(--bo-gradient-main);
  background: linear-gradient(135deg, var(--bo-accent) 0%, #00b8d4 100%);
  color: #090d16;
  padding: 0.75rem 1.5rem;
  border-radius: var(--bo-radius);
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  box-shadow: 0 4px 15px var(--bo-accent-glow);
  flex-shrink: 0;
}

.bo-price-label {
  font-size: 0.70rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  opacity: 0.8;
}

.bo-price-val {
  font-size: 1.85rem;
  font-weight: 800;
  font-family: var(--bo-font-heading);
}

/* CTA button link styling */
.bo-action-link {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  background: linear-gradient(135deg, var(--bo-accent) 0%, #00b8d4 100%);
  color: #090d16;
  font-family: var(--bo-font-heading);
  font-weight: 800;
  text-transform: uppercase;
  padding: 1.25rem 2.5rem;
  border-radius: var(--bo-radius);
  text-decoration: none;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 5px 20px rgba(0, 229, 255, 0.35);
  text-align: center;
  font-size: 1.15rem;
  letter-spacing: 0.07em;
  flex-grow: 1;
  max-width: 320px;
}

.bo-action-link:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 229, 255, 0.65);
  filter: brightness(1.1);
}

/* Features Block: Horizontal Rows (after product block) */
.bo-attributes-strip {
  margin-top: 4rem;
  margin-bottom: 4rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.bo-attributes-header {
  text-align: center;
  font-size: 1.85rem;
  margin-bottom: 2rem;
  letter-spacing: 0.05em;
  color: var(--bo-ink-primary);
}

.bo-stripe-plate {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: var(--bo-surface);
  border: 1px solid var(--bo-border);
  padding: 2rem;
  border-radius: var(--bo-radius);
  gap: 1.5rem;
  text-align: center;
  transition: transform 0.3s;
}

@media (min-width: 768px) {
  .bo-stripe-plate {
    flex-direction: row;
    text-align: left;
    gap: 2rem;
  }
}

.bo-stripe-plate:hover {
  transform: translateY(-3px);
  border-color: var(--bo-accent);
}

.bo-stripe-icon-shell {
  width: 80px;
  height: 80px;
  background: var(--bo-accent-glow);
  color: var(--bo-accent);
  border-radius: 9999px; /* circle */
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.bo-stripe-vector {
  width: 40px;
  height: 40px;
}

.bo-stripe-details {
  flex-grow: 1;
}

.bo-stripe-header {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
  color: var(--bo-ink-primary);
}

.bo-stripe-phrase {
  color: var(--bo-ink-secondary);
  margin: 0;
  font-size: 0.95rem;
}

/* Testimonials: 2-3 Columns Grid (Preset A Style) */
.bo-feedback-zone {
  margin-top: 4rem;
  margin-bottom: 5rem;
  padding: 3rem 1.5rem;
  background: var(--bo-surface);
  border-radius: var(--bo-radius);
  border: 1px solid var(--bo-border);
}

.bo-feedback-main-header {
  text-align: center;
  font-size: 1.85rem;
  margin-bottom: 2.5rem;
  letter-spacing: 0.05em;
  color: var(--bo-ink-primary);
}

.bo-feedback-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 768px) {
  .bo-feedback-layout {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .bo-feedback-layout {
    grid-template-columns: repeat(3, 1fr);
  }
}

.bo-opinion-pod {
  background: var(--bo-surface-card);
  border-top: 4px solid var(--bo-accent); /* Colorful top border preset styling */
  border-radius: var(--bo-radius);
  padding: 2rem;
  box-shadow: var(--bo-shadow);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 0.3s;
}

.bo-opinion-pod:hover {
  transform: translateY(-5px);
}

.bo-feedback-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.25rem;
}

.bo-avatar {
  width: 48px;
  height: 48px;
  background: var(--bo-accent-glow);
  color: var(--bo-accent);
  border: 1px solid var(--bo-accent);
  border-radius: 9999px; /* circle avatar with initials */
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
}

.bo-stars {
  color: #ffb400;
  font-size: 1.1rem;
  letter-spacing: 0.1em;
}

.bo-opinion-quote {
  color: var(--bo-ink-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
  margin: 0;
  flex-grow: 1;
}

.bo-opinion-author {
  font-family: var(--bo-font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  margin-top: 1.5rem;
  text-align: right;
  color: var(--bo-ink-primary);
}

/* Footer layout (Contrast styling) */
.bo-footer-bar {
  background: var(--bo-surface);
  border-top: 1px solid var(--bo-border);
  padding: 2.5rem 1.5rem;
  width: 100%;
  z-index: 20;
  position: relative;
}

.bo-footer-inner {
  max-width: var(--bo-max-width);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .bo-footer-inner {
    flex-direction: row;
    justify-content: space-between;
  }
}

.bo-footer-logo-side {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.bo-footer-links-side {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  align-items: center;
  font-style: normal;
}

@media (min-width: 768px) {
  .bo-footer-links-side {
    align-items: flex-end;
  }
}

.bo-footer-links-side a {
  color: var(--bo-ink-secondary);
  text-decoration: none;
  font-size: 0.85rem;
  transition: color 0.2s;
}

.bo-footer-links-side a:hover {
  color: var(--bo-accent);
}