* { margin: 0; padding: 0; box-sizing: border-box; font-family: inherit; }
html { scroll-behavior: smooth; }
body { font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, Roboto, 'Helvetica Neue', Arial, sans-serif; background: #FFFFFF; }

:root {
  --sunshine-orange: #F5A623;
  --deep-sea-blue: #1A2A4F;
  --morning-gold: #D4AF37;
  --light-gray: #F8F9FA;
  --dark-gray: #212529;
  --medium-gray: #6C757D;
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.text-sunshine-orange { color: #F5A623; }
.text-deep-sea-blue { color: #1A2A4F; }
.text-medium-gray { color: #6C757D;font-size: 14px }
.text-dark-gray { color: #212529; }
.text-green { color: #22C55E; }
.bg-sunshine-orange { background: #F5A623; }
.bg-deep-sea-blue { background: #1A2A4F; }
.bg-light-gray { background: #F8F9FA; }
.bg-white { background: white; }

.btn-primary {
  background: #F5A623;
  color: white;
  padding: 14px 32px;
  border-radius: 4px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.3s;
  font-size: 16px;
}
.btn-primary:hover {
  background: #E8891F;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(245,166,35,0.3);
}

.btn-link {
  color: #F5A623;
  text-decoration: none;
  font-weight: 500;
  cursor: pointer;
  transition: color 0.3s;
  font-size: 16px;
}
.btn-link:hover {
  color: #E8891F;
  text-decoration: underline;
}

.card {
  background: white;
  border-radius: 4px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
  transition: all 0.3s;
}

.card:hover { transform: translateY(-4px); box-shadow: 0 12px 24px rgba(0,0,0,0.15); }

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 64px;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 1000;
  transition: all 0.3s ease;
  background: transparent;
}
.navbar.scrolled {
  background: white;
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}
.nav-logo {
  height: 40px;
  width: auto;
}
.nav-right {
  display: flex;
  align-items: center;
  gap: 20px;
}
.nav-icon-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 20px;
  color: white;
  transition: color 0.3s;
}
.navbar.scrolled .nav-icon-btn {
  color: #6C757D;
}
.nav-icon-btn:hover {
  color: #F5A623;
}
.nav-login {
  font-size: 15px;
  font-weight: 500;
  color: white;
  cursor: pointer;
  transition: color 0.3s;
}
.navbar.scrolled .nav-login {
  color: #212529;
}
.nav-login:hover {
  color: #F5A623;
}

.side-nav {
  position: fixed;
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.side-nav-item {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  cursor: pointer;
}
.side-nav-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #D1D5DB;
  transition: all 0.3s;
}
.side-nav-item.active .side-nav-dot {
  background: #F5A623;
  transform: scale(1.4);
}
.side-nav-tooltip {
  position: absolute;
  right: 24px;
  background: rgba(0,0,0,0.8);
  color: white;
  padding: 6px 12px;
  border-radius: 4px;
  font-size: 13px;
  white-space: nowrap;
  opacity: 0;
  transform: translateX(10px);
  transition: all 0.3s;
  pointer-events: none;
}
.side-nav-item:hover .side-nav-tooltip {
  opacity: 1;
  transform: translateX(0);
}

.floating-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: white;
  box-shadow: 0 -4px 20px rgba(0,0,0,0.1);
  z-index: 1000;
  padding: 16px 24px;
  transform: translateY(100%);
  transition: transform 0.3s ease;
}
.floating-bar.visible {
  transform: translateY(0);
}

.quantity-selector {
  display: flex;
  align-items: center;
  border: 2px solid #E5E7EB;
  border-radius: 4px;
  overflow: hidden;
}
.quantity-btn {
  width: 40px;
  height: 40px;
  border: none;
  background: #F8F9FA;
  cursor: pointer;
  font-size: 18px;
  transition: background 0.3s;
}
.quantity-btn:hover {
  background: #E5E7EB;
}
.quantity-input {
  width: 60px;
  height: 40px;
  border: none;
  text-align: center;
  font-size: 16px;
  font-weight: 600;
}

.sku-option {
  padding: 10px 20px;
  border: 2px solid #E5E7EB;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.3s;
  background: white;
  font-size: 14px;
}
.sku-option:hover {
  border-color: #F5A623;
}
.sku-option.selected {
  border-color: #F5A623;
  background: rgba(245,166,35,0.1);
  color: #F5A623;
}

.grid { display: grid; }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.flex { display: flex; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.gap-4 { gap: 16px; }
.gap-5 { gap: 20px; }
.gap-6 { gap: 24px; }
.gap-8 { gap: 32px; }
.gap-12 { gap: 48px; }
.text-center { text-align: center; }
.text-center-index { text-align: center;color: #1A2A4F;font-size: 30px;font-weight: 700 }
.text-sm { font-size: 14px; }
.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }
.text-3xl { font-size: 2rem; }
.text-4xl { font-size: 2.25rem; }
.text-5xl { font-size: 3rem; }
.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.mb-3 { margin-bottom: 12px; }
.mb-4 { margin-bottom: 16px; }
.mt-3 { margin-top: 12px; }
.mt-12 { margin-top: 48px; }
.pt-16 { padding-top: 64px; }
.p-6 { padding: 24px; }
.p-8 { padding: 32px; }

h5 {
  padding-top: 30px;
  font-size: 26px;
  font-weight: 700;
  color: #1A2A4F;
  text-align: center;
}

h4 {
  font-size: 18px;
  color: #1A2A4F;
  margin-bottom: 4px;
  font-weight: 600;
}

.hero-video {
  height: 580px;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #1A2A4F 0%, #2A3A5F 100%);
}

.video-placeholder {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(245,166,35,0.15) 0%, transparent 50%, rgba(26,42,79,0.7) 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.6);
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.35);
  z-index: 1;
}

.sunshine-effect {
  position: absolute;
  top: -30%;
  right: -10%;
  width: 60%;
  height: 160%;
  background: radial-gradient(ellipse at center, rgba(245,166,35,0.25) 0%, transparent 70%);
  z-index: 2;
}

.hero-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: white;
  text-align: center;
  z-index: 3;
}

.hero-content h1 {
  font-size: 48px;
  font-weight: 700;
  margin-bottom: 16px;
  color: white;
}

.hero-content p {
  font-size: 16px;
  letter-spacing: 4px;
  color: white;
}

.four-images {
  width: 100%;
}

.image-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(0,0,0,0.6));
  padding: 12px 16px;
  color: white;
  font-size: 20px;
  font-weight: 500;
  text-align: center;
}

#painpoint {
  padding: 64px 24px;
}

.painpoint-cards {
  display: flex;
  gap: 20px;
  justify-content: center;
  max-width: 1200px;
  margin: 0 auto;
}

.painpoint-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 20px 32px;
  background: white;
  border-radius: 4px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  flex: 1;
  justify-content: center;
  font-size: 16px;
}

#features {
  /*padding: 80px 0;*/
}

.specs-box {
  background: #F8F9FA;
  border-radius: 4px;
  padding: 32px;
  height: 100%;
}

.spec-item {
  display: flex;
  justify-content: space-between;
  padding: 18px 0;
  border-bottom: 1px solid #E5E7EB;
  font-size: 15px;
}

.spec-item:last-child {
  border-bottom: none;
}


.reviews-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
  padding-bottom: 16px;
  border-bottom: 1px solid #E5E7EB;
}

.beta-tag {
  font-size: 11px;
  background: linear-gradient(135deg, #F5A623 0%, #D4AF37 100%);
  color: white;
  padding: 3px 10px;
  border-radius: 20px;
}

.review-image-placeholder {
  width: 60px;
  height: 60px;
  background: #F8F9FA;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #6C757D;
  font-size: 12px;
}

#faq {
  padding: 80px 0;
}

.bottom-spacer {
  height: 100px;
}

@media (max-width: 768px) {
  .side-nav { display: none; }
  .grid-cols-2 { grid-template-columns: 1fr !important; }
  .grid-cols-3 { grid-template-columns: 1fr !important; }
  .painpoint-cards { flex-direction: column; }
  .hero-content h1 { font-size: 32px; }
  .text-4xl { font-size: 1.5rem; }
}