@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: #0a0a0a;
  color: #ffffff;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }

/* Header */
.rb-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 24px; max-width: 1200px; margin: 0 auto;
  border-bottom: 1px solid #1a1a1a;
}
.rb-logo {
  font-size: 24px; font-weight: 800; letter-spacing: 1px;
  display: flex; align-items: center; gap: 10px; color: #fff;
}
.rb-logo svg { width: 30px; height: 30px; fill: #dc2626; }
.rb-nav { display: flex; gap: 32px; align-items: center; }
.rb-nav a { color: #a1a1aa; font-size: 14px; font-weight: 500; transition: color 0.2s; }
.rb-nav a:hover, .rb-nav a.active { color: #fff; }
.rb-btn {
  background: #dc2626; color: #fff; border: none; padding: 10px 22px;
  border-radius: 8px; font-size: 14px; font-weight: 600; cursor: pointer;
  transition: all 0.2s; display: inline-block;
}
.rb-btn:hover { background: #b91c1c; transform: translateY(-1px); }
.rb-btn-outline {
  background: transparent; border: 1px solid #333; color: #fff;
}
.rb-btn-outline:hover { border-color: #dc2626; color: #dc2626; background: transparent; }
.rb-btn-lg { padding: 14px 32px; font-size: 15px; }

/* Hero */
.rb-hero {
  text-align: center; padding: 100px 24px 80px;
  background: linear-gradient(180deg, rgba(220,38,38,0.08) 0%, transparent 60%);
}
.rb-hero h1 { font-size: 52px; font-weight: 800; line-height: 1.1; margin: 0 0 20px; }
.rb-hero p { color: #a1a1aa; font-size: 18px; max-width: 640px; margin: 0 auto 32px; }
.rb-hero-btns { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* Sections */
.rb-section { padding: 80px 24px; max-width: 1200px; margin: 0 auto; }
.rb-subtitle {
  text-align: center; font-size: 12px; color: #dc2626;
  text-transform: uppercase; letter-spacing: 2px; margin-bottom: 10px; font-weight: 700;
}
.rb-title { text-align: center; font-size: 36px; font-weight: 800; margin: 0 0 48px; }

/* Stats */
.rb-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 20px; margin-top: 40px; }
.rb-stat { background: #111; border: 1px solid #1a1a1a; border-radius: 12px; padding: 32px 20px; text-align: center; transition: all 0.2s; }
.rb-stat:hover { border-color: #dc2626; }
.rb-stat-num { font-size: 36px; font-weight: 800; color: #dc2626; font-variant-numeric: tabular-nums; }
.rb-stat-label { font-size: 14px; color: #a1a1aa; margin-top: 6px; }

/* Pricing Tabs */
.rb-pricing-tabs { display: flex; justify-content: center; gap: 10px; margin-bottom: 32px; flex-wrap: wrap; }
.rb-tab { background: #111; border: 1px solid #1a1a1a; color: #a1a1aa; padding: 10px 24px; border-radius: 8px; font-size: 14px; font-weight: 600; cursor: pointer; transition: all 0.2s; }
.rb-tab.active, .rb-tab:hover { background: #dc2626; color: #fff; border-color: #dc2626; }

/* Pricing Cards */
.rb-plans { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; }
.rb-plan { background: #111; border: 1px solid #1a1a1a; border-radius: 14px; padding: 28px; position: relative; transition: all 0.25s; }
.rb-plan:hover { transform: translateY(-4px); border-color: #dc2626; box-shadow: 0 12px 40px rgba(220,38,38,0.1); }
.rb-plan-badge { position: absolute; top: -10px; right: 20px; background: #dc2626; color: #fff; font-size: 11px; font-weight: 700; padding: 5px 12px; border-radius: 6px; letter-spacing: 0.5px; text-transform: uppercase; }
.rb-plan-period { font-size: 14px; color: #a1a1aa; margin-bottom: 6px; font-weight: 500; }
.rb-plan-price { font-size: 42px; font-weight: 800; margin: 0 0 20px; font-variant-numeric: tabular-nums; }
.rb-plan-price span { font-size: 15px; color: #a1a1aa; font-weight: 400; }
.rb-plan-features { list-style: none; padding: 0; margin: 0 0 24px; }
.rb-plan-features li { display: flex; align-items: center; gap: 10px; font-size: 13px; color: #a1a1aa; margin-bottom: 10px; }
.rb-plan-features li::before { content: "✓"; color: #dc2626; font-weight: 700; font-size: 14px; flex-shrink: 0; }
.rb-plan .rb-btn { width: 100%; text-align: center; }
.rb-discount { text-align: center; margin-top: 24px; font-size: 15px; color: #dc2626; font-weight: 600; }

/* Counters */
.rb-counters { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 20px; }
.rb-counter { text-align: center; padding: 24px; }
.rb-counter-icon { width: 44px; height: 44px; margin: 0 auto 12px; color: #dc2626; }
.rb-counter-num { font-size: 36px; font-weight: 800; color: #dc2626; font-variant-numeric: tabular-nums; }
.rb-counter-label { font-size: 14px; color: #a1a1aa; margin-top: 6px; }

/* Devices */
.rb-devices { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 16px; text-align: center; }
.rb-device { background: #111; border: 1px solid #1a1a1a; border-radius: 12px; padding: 24px 14px; transition: all 0.2s; }
.rb-device:hover { border-color: #dc2626; transform: translateY(-2px); }
.rb-device-icon { width: 36px; height: 36px; margin: 0 auto 10px; color: #dc2626; }
.rb-device-name { font-size: 14px; font-weight: 600; }
.rb-device-sub { font-size: 12px; color: #a1a1aa; margin-top: 2px; }

/* Why Us */
.rb-why { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.rb-why-text h3 { font-size: 24px; font-weight: 700; margin: 0 0 14px; }
.rb-why-text p { color: #a1a1aa; font-size: 15px; line-height: 1.7; margin: 0 0 20px; }
.rb-why-img { background: #111; border: 1px solid #1a1a1a; border-radius: 14px; min-height: 280px; display: flex; align-items: center; justify-content: center; color: #525252; }

/* Testimonials */
.rb-testis { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; }
.rb-testi { background: #111; border: 1px solid #1a1a1a; border-radius: 14px; padding: 28px; transition: border-color 0.2s; }
.rb-testi:hover { border-color: #dc2626; }
.rb-stars { color: #fbbf24; font-size: 16px; margin-bottom: 12px; letter-spacing: 2px; }
.rb-testi-text { font-size: 15px; color: #a1a1aa; line-height: 1.7; margin-bottom: 16px; }
.rb-testi-name { font-size: 14px; font-weight: 600; }

/* CTA */
.rb-cta { text-align: center; background: linear-gradient(180deg, transparent 0%, rgba(220,38,38,0.05) 100%); border-top: 1px solid #1a1a1a; border-bottom: 1px solid #1a1a1a; }
.rb-cta h2 { font-size: 32px; font-weight: 800; margin: 0 0 14px; }
.rb-cta p { color: #a1a1aa; font-size: 16px; margin: 0 0 24px; }

/* Footer */
.rb-footer { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 32px; padding: 48px 24px; max-width: 1200px; margin: 0 auto; border-top: 1px solid #1a1a1a; font-size: 14px; color: #a1a1aa; }
.rb-footer h4 { font-size: 15px; font-weight: 700; color: #fff; margin: 0 0 16px; }
.rb-footer a { color: #a1a1aa; text-decoration: none; display: block; margin-bottom: 10px; transition: color 0.2s; }
.rb-footer a:hover { color: #dc2626; }
.rb-copyright { text-align: center; padding: 20px; font-size: 13px; color: #525252; border-top: 1px solid #1a1a1a; }

/* Page content */
.rb-page-content { max-width: 800px; margin: 0 auto; padding: 48px 24px; }
.rb-page-content h2 { font-size: 28px; font-weight: 700; margin: 32px 0 16px; color: #fff; }
.rb-page-content h3 { font-size: 20px; font-weight: 600; margin: 24px 0 12px; color: #dc2626; }
.rb-page-content p { color: #a1a1aa; line-height: 1.7; margin-bottom: 16px; }
.rb-page-content ul { margin: 0 0 16px 20px; color: #a1a1aa; }
.rb-page-content li { margin-bottom: 8px; }

/* Contact form */
.rb-form { max-width: 600px; margin: 0 auto; }
.rb-form-group { margin-bottom: 20px; }
.rb-form label { display: block; font-size: 14px; font-weight: 500; margin-bottom: 6px; color: #d4d4d8; }
.rb-form input, .rb-form textarea {
  width: 100%; padding: 12px 16px; background: #111; border: 1px solid #27272a;
  border-radius: 8px; color: #fff; font-size: 14px; font-family: inherit;
}
.rb-form input:focus, .rb-form textarea:focus { outline: none; border-color: #dc2626; }
.rb-form textarea { min-height: 120px; resize: vertical; }

/* FAQ */
.rb-faq-item { background: #111; border: 1px solid #1a1a1a; border-radius: 12px; padding: 20px 24px; margin-bottom: 12px; }
.rb-faq-item h4 { font-size: 16px; font-weight: 600; margin-bottom: 8px; color: #fff; }
.rb-faq-item p { color: #a1a1aa; font-size: 14px; line-height: 1.6; }

/* Installation guide */
.rb-guide { max-width: 800px; margin: 0 auto; }
.rb-guide-step { background: #111; border: 1px solid #1a1a1a; border-radius: 12px; padding: 24px; margin-bottom: 16px; }
.rb-guide-step h4 { color: #dc2626; font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.rb-guide-step p { color: #a1a1aa; font-size: 14px; line-height: 1.6; }
.rb-guide-step code {
  background: #0a0a0a; padding: 2px 8px; border-radius: 4px;
  font-family: 'Courier New', monospace; font-size: 13px; color: #dc2626;
}

/* Responsive */
@media (max-width: 768px) {
  .rb-hero h1 { font-size: 36px; }
  .rb-title { font-size: 28px; }
  .rb-why { grid-template-columns: 1fr; }
  .rb-nav { display: none; }
  .rb-section { padding: 56px 20px; }
}

/* Scroll to Top Button */
.scroll-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  background: #dc2626;
  color: #fff;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.3s ease;
  z-index: 9999;
  box-shadow: 0 4px 12px rgba(220,38,38,0.3);
}
.scroll-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.scroll-top:hover {
  background: #b91c1c;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(220,38,38,0.4);
}
.scroll-top svg {
  width: 20px;
  height: 20px;
}

/* Scroll Down Button (visible when at top) */
.scroll-down {
  position: fixed;
  bottom: 24px;
  left: 24px;
  width: 44px;
  height: 44px;
  background: #dc2626;
  color: #fff;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.3s ease;
  z-index: 9999;
  box-shadow: 0 4px 12px rgba(220,38,38,0.3);
}
.scroll-down.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.scroll-down:hover {
  background: #b91c1c;
  transform: translateY(2px);
  box-shadow: 0 6px 20px rgba(220,38,38,0.4);
}
.scroll-down svg {
  width: 20px;
  height: 20px;
}