/* Ai Singularity V3 - UI/UX Pro Max Design System */

/* Style: Vibrant & Block-based | Pattern: Feature-Rich Showcase */



@import url('https://fonts.googleapis.com/css2?family=Nunito+Sans:wght@300;400;500;600;700&family=Rubik:wght@300;400;500;600;700;800;900&display=swap');



:root {

  /* UI/UX Pro Max Palette - Orange adaptation */

  --primary: #FF6A00;

  --primary-dark: #E85D00;

  --primary-light: #FF8A33;

  --cta: #F97316;

  --cta-hover: #EA580C;

  --bg: #F8FAFC;

  --bg-warm: #FFF8F3;

  --surface: #FFFFFF;

  --text: #1E293B;

  --text-secondary: #475569;

  --text-muted: #64748B;

  --border: #E2E8F0;

  --border-light: #F1F5F9;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);

  --shadow: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);

  --shadow-md: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.04);

  --shadow-lg: 0 20px 25px -5px rgba(0,0,0,0.08), 0 8px 10px -6px rgba(0,0,0,0.04);

  --shadow-orange: 0 10px 30px -5px rgba(255,106,0,0.25);

  --radius: 16px;

  --radius-sm: 10px;

  --radius-lg: 24px;

  --radius-full: 9999px;

}



*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }



html { scroll-behavior: smooth; }



body {

  font-family: 'Nunito Sans', 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', sans-serif;

  color: var(--text);

  background: var(--bg);

  line-height: 1.65;

  -webkit-font-smoothing: antialiased;

  -moz-osx-font-smoothing: grayscale;

  font-weight: 400;

}



h1, h2, h3, h4 { font-family: 'Rubik', 'PingFang SC', sans-serif; font-weight: 700; letter-spacing: -0.02em; }



.container { max-width: 1200px; margin: 0 auto; padding: 0 32px; }



/* Floating Navbar - UI/UX Pro Max: top-4 spacing */

.navbar {

  position: fixed;

  top: 16px;

  left: 50%;

  transform: translateX(-50%);

  z-index: 1000;

  width: calc(100% - 32px);

  max-width: 1168px;

  background: rgba(255,255,255,0.9);

  backdrop-filter: blur(16px);

  -webkit-backdrop-filter: blur(16px);

  border-radius: var(--radius-full);

  border: 1px solid var(--border-light);

  box-shadow: var(--shadow-md);

  transition: all 0.25s ease;

}

.navbar.scrolled {

  background: rgba(255,255,255,0.95);

  box-shadow: var(--shadow-lg);

}

.navbar .container {

  display: flex;

  justify-content: space-between;

  align-items: center;

  height: 56px;

  padding: 0 24px;

}

.logo {

  display: flex;

  align-items: center;

  gap: 10px;

  text-decoration: none;

  font-family: 'Rubik', sans-serif;

  font-size: 19px;

  font-weight: 700;

  color: var(--text);

  letter-spacing: -0.02em;

}

.logo-mark {

  width: 32px;

  height: 32px;

  border-radius: 10px;

  display: flex;

  align-items: center;

  justify-content: center;

  overflow: hidden;

}

.logo-mark img {

  width: 100%;

  height: 100%;

  object-fit: contain;

}

.nav-links { list-style: none; display: flex; gap: 4px; }

.nav-links a {

  text-decoration: none;

  color: var(--text-secondary);

  font-size: 14px;

  font-weight: 500;

  padding: 8px 18px;

  border-radius: var(--radius-full);

  transition: all 0.2s ease;

}

.nav-links a:hover { background: var(--border-light); color: var(--text); }

.nav-links a.active { background: var(--text); color: white; }



/* Hero - Vibrant Block Style */

.hero {

  padding: 200px 0 120px;

  position: relative;

  overflow: hidden;

  background: var(--bg-warm);

}

.hero-blocks {

  position: absolute;

  inset: 0;

  pointer-events: none;

  overflow: hidden;

}

.hero-block {

  position: absolute;

  border-radius: var(--radius-lg);

  opacity: 0.06;

}

.hero-block:nth-child(1) {

  width: 400px;

  height: 400px;

  background: var(--primary);

  top: -100px;

  right: -100px;

  transform: rotate(15deg);

}

.hero-block:nth-child(2) {

  width: 200px;

  height: 200px;

  background: var(--primary);

  bottom: 40px;

  left: 10%;

  transform: rotate(-10deg);

  border-radius: 40px;

}

.hero-block:nth-child(3) {

  width: 120px;

  height: 120px;

  background: var(--cta);

  top: 30%;

  left: -40px;

  border-radius: 50%;

}

.hero .container { position: relative; z-index: 1; max-width: 800px; text-align: center; }



.hero-badge {

  display: inline-flex;

  align-items: center;

  gap: 8px;

  background: var(--surface);

  border: 1px solid var(--border);

  padding: 6px 16px;

  border-radius: var(--radius-full);

  font-size: 13px;

  font-weight: 500;

  color: var(--text-secondary);

  margin-bottom: 32px;

  animation: fadeInUp 0.6s ease backwards;

}

.hero-badge-dot {

  width: 7px;

  height: 7px;

  background: #22C55E;

  border-radius: 50%;

  animation: pulse-dot 2s ease infinite;

}



.hero h1 {

  font-size: clamp(40px, 7vw, 72px);

  font-weight: 900;

  letter-spacing: -0.04em;

  line-height: 1.08;

  margin-bottom: 24px;

  animation: fadeInUp 0.6s 0.1s ease backwards;

}

.hero h1 .highlight {

  background: linear-gradient(135deg, var(--primary), var(--cta));

  -webkit-background-clip: text;

  -webkit-text-fill-color: transparent;

  background-clip: text;

}

.hero-subtitle {

  font-size: 18px;

  color: var(--text-secondary);

  max-width: 500px;

  margin: 0 auto 40px;

  font-weight: 400;

  animation: fadeInUp 0.6s 0.2s ease backwards;

}

.hero-buttons {

  display: flex;

  gap: 12px;

  justify-content: center;

  animation: fadeInUp 0.6s 0.3s ease backwards;

}



.btn {

  display: inline-flex;

  align-items: center;

  gap: 8px;

  padding: 15px 32px;

  border-radius: var(--radius-full);

  font-size: 15px;

  font-weight: 600;

  text-decoration: none;

  transition: all 0.25s ease;

  border: none;

  cursor: pointer;

  letter-spacing: -0.01em;

  font-family: 'Rubik', sans-serif;

}

.btn-primary {

  background: var(--primary);

  color: white;

  box-shadow: var(--shadow-orange);

}

.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 14px 36px -6px rgba(255,106,0,0.35); }

.btn-outline {

  background: var(--surface);

  color: var(--text);

  border: 1.5px solid var(--border);

}

.btn-outline:hover { border-color: var(--text); transform: translateY(-2px); }



/* Page Hero */

.page-hero {

  padding: 180px 0 80px;

  text-align: center;

  background: var(--bg-warm);

  position: relative;

  overflow: hidden;

}

.page-hero::after {

  content: '';

  position: absolute;

  top: 50%;

  left: 50%;

  transform: translate(-50%, -50%);

  width: 500px;

  height: 500px;

  background: radial-gradient(circle, rgba(255,106,0,0.08) 0%, transparent 70%);

  border-radius: 50%;

  pointer-events: none;

}

.page-hero h1 { font-size: clamp(32px, 5vw, 52px); font-weight: 900; letter-spacing: -0.03em; margin-bottom: 12px; position: relative; z-index: 1; }

.page-hero p { color: var(--text-secondary); font-size: 17px; position: relative; z-index: 1; }

.section-label {

  display: inline-block;

  font-size: 12px;

  font-weight: 700;

  text-transform: uppercase;

  letter-spacing: 0.1em;

  color: var(--primary);

  margin-bottom: 16px;

  position: relative;

  z-index: 1;

}



/* Features Section - Vibrant Blocks */

.features { padding: 120px 0; background: var(--bg); }

.features-header { text-align: center; margin-bottom: 72px; }

.features-header h2 { font-size: clamp(28px, 4vw, 42px); font-weight: 800; letter-spacing: -0.03em; margin-bottom: 12px; }

.features-header p { color: var(--text-muted); font-size: 16px; }



.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }



.feature-card {

  position: relative;

  border-radius: var(--radius-lg);

  overflow: hidden;

  background: var(--surface);

  box-shadow: var(--shadow-sm);

  cursor: pointer;

  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);

  border: 1px solid var(--border-light);

}

.feature-card:hover {

  transform: translateY(-8px);

  box-shadow: var(--shadow-lg);

  border-color: var(--primary);

}



.feature-img-wrap {

  position: relative;

  overflow: hidden;

  height: 200px;

}

.feature-img {

  width: 100%;

  height: 100%;

  object-fit: cover;

  transition: transform 0.5s ease;

}

.feature-card:hover .feature-img { transform: scale(1.08); }



.feature-num {

  position: absolute;

  top: 14px;

  left: 14px;

  z-index: 2;

  width: 34px;

  height: 34px;

  border-radius: 10px;

  background: rgba(255,255,255,0.9);

  backdrop-filter: blur(8px);

  display: flex;

  align-items: center;

  justify-content: center;

  font-family: 'Rubik', sans-serif;

  font-size: 14px;

  font-weight: 700;

  color: var(--text);

  transition: all 0.3s ease;

  box-shadow: var(--shadow-sm);

}

.feature-card:hover .feature-num {

  background: var(--primary);

  color: white;

}



.feature-body {

  padding: 24px;

  background: var(--surface);

}

.feature-body h3 {

  font-size: 17px;

  font-weight: 700;

  margin-bottom: 6px;

  color: var(--text);

}

.feature-body p {

  font-size: 14px;

  color: var(--text-muted);

  line-height: 1.6;

}



/* Products Section - Feature-Rich Showcase */

.products-section {

  padding: 120px 0;

  background: var(--bg-warm);

}

.products-header { text-align: center; margin-bottom: 72px; }

.products-header h2 { font-size: clamp(28px, 4vw, 42px); font-weight: 800; letter-spacing: -0.03em; margin-bottom: 12px; }



.product-showcase { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }

.product-card {

  background: var(--surface);

  border-radius: var(--radius-lg);

  padding: 56px 48px;

  position: relative;

  overflow: hidden;

  border: 1px solid var(--border-light);

  cursor: pointer;

  transition: all 0.3s ease;

  box-shadow: var(--shadow-sm);

}

.product-card:hover {

  transform: translateY(-6px);

  box-shadow: var(--shadow-lg);

  border-color: var(--primary);

}

.product-card-decoration {

  position: absolute;

  top: -60px;

  right: -60px;

  width: 200px;

  height: 200px;

  background: var(--bg-warm);

  border-radius: 50%;

  transition: all 0.5s ease;

}

.product-card:hover .product-card-decoration { transform: scale(1.5); background: rgba(255,106,0,0.06); }

.product-card > * { position: relative; z-index: 1; }

.product-card-num {

  font-family: 'Rubik', sans-serif;

  font-size: 64px;

  font-weight: 900;

  color: var(--bg-warm);

  line-height: 1;

  margin-bottom: -8px;

  transition: color 0.3s ease;

}

.product-card:hover .product-card-num { color: rgba(255,106,0,0.12); }

.product-card h3 { font-size: 24px; font-weight: 700; margin-bottom: 12px; margin-top: 4px; }

.product-card-logo {

  width: 100px;

  height: 100px;

  object-fit: contain;

  margin-bottom: 16px;

  position: relative;

  z-index: 1;

}

.product-card p { color: var(--text-secondary); font-size: 15px; margin-bottom: 24px; }

.product-tag {

  display: inline-block;

  padding: 5px 14px;

  border-radius: var(--radius-full);

  font-size: 15px;

  font-weight: 700;

  color: var(--primary);

  background: var(--bg-warm);

  margin-bottom: 20px;

}

.product-link {

  display: inline-flex;

  align-items: center;

  gap: 8px;

  font-size: 14px;

  font-weight: 600;

  color: var(--text);

  text-decoration: none;

  font-family: 'Rubik', sans-serif;

  cursor: pointer;

  transition: gap 0.2s ease;

}

.product-link:hover { gap: 14px; color: var(--primary); }

.product-link svg { transition: transform 0.2s ease; }

.product-link:hover svg { transform: translateX(3px); }



/* Product Detail Page */

.product-detail-section { padding: 80px 0; background: var(--bg); }

.product-detail-block {

  display: grid;

  grid-template-columns: 1fr 1fr;

  gap: 64px;

  align-items: center;

  padding: 64px 0;

  border-bottom: 1px solid var(--border-light);

}

.product-detail-block:last-child { border-bottom: none; }



.product-visual {

  aspect-ratio: 4/3;

  background: var(--bg-warm);

  border-radius: var(--radius-lg);

  display: flex;

  align-items: center;

  justify-content: center;

  position: relative;

  overflow: hidden;

}

.product-visual::after {

  content: '';

  position: absolute;

  inset: 0;

  background: linear-gradient(135deg, rgba(255,106,0,0.06), transparent 60%);

}

.product-visual-icon { font-size: 100px; opacity: 0.25; }

.product-visual-logo {

  width: 65%;

  height: 65%;

  object-fit: contain;

  position: relative;

  z-index: 1;

}

.product-detail-info .product-tag { margin-bottom: 16px; }

.product-detail-info h2 { font-size: clamp(24px, 3vw, 32px); font-weight: 800; margin-bottom: 16px; letter-spacing: -0.03em; }

.product-detail-info > p { color: var(--text-secondary); font-size: 16px; line-height: 1.7; margin-bottom: 32px; }



.feature-list { list-style: none; display: flex; flex-direction: column; gap: 14px; }

.feature-list li {

  display: flex;

  align-items: flex-start;

  gap: 12px;

  font-size: 15px;

  color: var(--text);

  font-weight: 500;

}

.check-icon {

  width: 22px;

  height: 22px;

  min-width: 22px;

  border-radius: 50%;

  background: var(--bg-warm);

  color: var(--primary);

  display: flex;

  align-items: center;

  justify-content: center;

  margin-top: 1px;

}

.check-icon svg { width: 12px; height: 12px; }



/* Contact Page */

.contact-section { padding: 80px 0 120px; background: var(--bg); }

.contact-layout { max-width: 520px; margin: 0 auto; text-align: center; }

.contact-card {

  background: var(--surface);

  border-radius: var(--radius-lg);

  padding: 64px 48px;

  box-shadow: var(--shadow-md);

  border: 1px solid var(--border-light);

}

.qr-frame {

  width: 200px;

  height: 200px;

  margin: 0 auto 32px;

  border: 2px dashed var(--border);

  border-radius: var(--radius);

  background: var(--bg-warm);

  display: flex;

  flex-direction: column;

  align-items: center;

  justify-content: center;

  gap: 12px;

  transition: all 0.3s ease;

  cursor: pointer;

}

.qr-frame:hover { border-color: var(--primary); background: rgba(255,106,0,0.04); }

.qr-frame svg { opacity: 0.4; }

.qr-frame p { font-size: 13px; color: var(--text-muted); }

.contact-card h2 { font-size: 24px; font-weight: 700; margin-bottom: 8px; }

.contact-card > p { color: var(--text-secondary); font-size: 15px; line-height: 1.7; }

.contact-divider {

  width: 40px;

  height: 3px;

  background: var(--primary);

  border-radius: 2px;

  margin: 24px auto;

}



/* Footer */

.footer {

  border-top: 1px solid var(--border-light);

  padding: 32px 0;

  background: var(--surface);

}

.footer .container { display: flex; justify-content: space-between; align-items: center; }

.footer-copy { font-size: 13px; }
.footer-beian { font-size: 11px; color: var(--text-muted); } color: var(--text-muted); }

.footer-nav { display: flex; gap: 24px; list-style: none; }

.footer-nav a { font-size: 13px; color: var(--text-muted); text-decoration: none; cursor: pointer; transition: color 0.2s ease; }

.footer-nav a:hover { color: var(--text); }



/* CTA Section */

.cta-section { padding: 100px 0; text-align: center; background: var(--bg); }

.cta-section h2 { font-size: clamp(28px, 4vw, 38px); font-weight: 800; margin-bottom: 12px; letter-spacing: -0.03em; }

.cta-section p { color: var(--text-secondary); margin-bottom: 32px; font-size: 16px; }



/* Animations */

@keyframes fadeInUp {

  from { opacity: 0; transform: translateY(30px); }

  to { opacity: 1; transform: translateY(0); }

}

@keyframes pulse-dot {

  0%, 100% { opacity: 1; }

  50% { opacity: 0.3; }

}



.reveal {

  opacity: 0;

  transform: translateY(40px);

  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);

}

.reveal.visible { opacity: 1; transform: translateY(0); }



.reveal-stagger > *:nth-child(1) { transition-delay: 0s; }

.reveal-stagger > *:nth-child(2) { transition-delay: 0.1s; }

.reveal-stagger > *:nth-child(3) { transition-delay: 0.2s; }

.reveal-stagger > *:nth-child(4) { transition-delay: 0.3s; }



/* Responsive */

@media (max-width: 1024px) {

  .feature-grid { grid-template-columns: repeat(2, 1fr); }

  .product-detail-block { grid-template-columns: 1fr; gap: 40px; }

  .product-showcase { grid-template-columns: 1fr; }

}



@media (max-width: 768px) {

  .container { padding: 0 20px; }

  .navbar { top: 8px; width: calc(100% - 16px); }

  .navbar .container { height: 52px; padding: 0 16px; }

  .nav-links a { padding: 6px 12px; font-size: 13px; }

  .logo { font-size: 17px; }

  .hero { padding: 160px 0 80px; }

  .hero h1 { font-size: 34px; }

  .feature-grid { grid-template-columns: 1fr; }

  .product-card { padding: 40px 28px; }

  .product-detail-section { padding: 40px 0; }

  .product-detail-block { padding: 40px 0; }

  .contact-card { padding: 40px 24px; }

  .footer .container { flex-direction: column; gap: 12px; }

  .page-hero { padding: 150px 0 60px; }

  .page-hero h1 { font-size: 28px; }

}



/* Accessibility: prefers-reduced-motion */

@media (prefers-reduced-motion: reduce) {

  *, *::before, *::after {

    animation-duration: 0.01ms !important;

    animation-iteration-count: 1 !important;

    transition-duration: 0.01ms !important;

  }

  html { scroll-behavior: auto; }

}