/* ============================================
   PIONEER PEPTIDE V2.0.0 - Biotech Corporate Website
   Precision Science / Future Lab Aesthetic
   ============================================ */

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

/* ============================================
   CSS Variables
   ============================================ */
:root {
  --primary: #1c9e91;
  --primary-rgb: 28, 158, 145;
  --primary-dark: #178a7e;
  --primary-light: rgba(28, 158, 145, 0.08);
  --primary-glow: rgba(28, 158, 145, 0.15);
  --primary-gradient: linear-gradient(135deg, #1c9e91 0%, #15b8a6 50%, #1c9e91 100%);
  --primary-gradient-soft: linear-gradient(135deg, rgba(28, 158, 145, 0.12) 0%, rgba(21, 184, 166, 0.06) 100%);
  
  --white: #ffffff;
  --bg-subtle: #f4f5f7;
  --gray-50: #fafafa;
  --gray-100: #f0f1f3;
  --gray-200: #e4e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --gray-950: #0a0d12;
  
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  
  --font-primary: 'Inter Tight', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  
  --fs-xs: 0.75rem;
  --fs-sm: 0.875rem;
  --fs-base: 1rem;
  --fs-lg: 1.125rem;
  --fs-xl: 1.25rem;
  --fs-2xl: 1.5rem;
  --fs-3xl: 1.875rem;
  --fs-4xl: 2.25rem;
  --fs-5xl: 3rem;
  
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;
  
  --container-max: 1320px;
  --header-height: 72px;
  --topbar-height: 40px;
  
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  --transition-slower: 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.03);
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.04);
  --shadow-base: 0 4px 12px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.08);
  --shadow-glow: 0 0 40px rgba(28, 158, 145, 0.12);
}

/* Reset & Base */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-primary);
  font-size: var(--fs-base);
  font-weight: 400;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--white);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; transition: color var(--transition-fast); }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }

/* Container */
.container { width: 100%; max-width: var(--container-max); margin: 0 auto; padding: 0 var(--space-6); }
@media (max-width: 768px) { .container { padding: 0 var(--space-4); } }

/* Typography */
h1, h2, h3, h4, h5, h6 { font-weight: 600; line-height: 1.15; letter-spacing: -0.025em; }

.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--fs-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--primary);
  margin-bottom: var(--space-5);
}
.section-label::before { content: ''; width: 20px; height: 1px; background: var(--primary); }

.section-title {
  font-size: clamp(1.875rem, 4vw, var(--fs-5xl));
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
  letter-spacing: -0.03em;
}

.section-subtitle {
  font-size: var(--fs-base);
  color: var(--text-secondary);
  max-width: 520px;
  line-height: 1.7;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 14px 28px;
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: 0.01em;
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--primary-gradient);
  background-size: 200% 100%;
  color: var(--white);
  border: 1px solid var(--primary);
}
.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left 0.5s ease;
}
.btn-primary:hover {
  background-position: 100% 0;
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(28, 158, 145, 0.3);
}
.btn-primary:hover::before { left: 100%; }

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-sm);
}
.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-light);
}

.btn-icon { width: 16px; height: 16px; transition: transform var(--transition-fast); }
.btn:hover .btn-icon { transform: translateX(3px); }
.btn-sm { padding: 10px 20px; font-size: var(--fs-xs); }

/* ============================================
   Top Bar
   ============================================ */
.topbar {
  background: var(--gray-900);
  color: var(--white);
  height: var(--topbar-height);
  font-size: var(--fs-xs);
  position: relative;
  z-index: 1001;
  display: flex;
  align-items: center;
}

.topbar .container {
  height: 100%;
}

.topbar-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  height: 100%;
}

.topbar-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--gray-400);
  height: 100%;
}
.topbar-item svg { width: 14px; height: 14px; color: var(--primary); }
.topbar-item a { color: var(--gray-400); transition: color var(--transition-fast); }
.topbar-item a:hover { color: var(--primary); }

.topbar-right {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  height: 100%;
}

.topbar-link {
  color: var(--gray-400);
  transition: color var(--transition-fast);
  display: flex;
  align-items: center;
  gap: var(--space-1);
  height: 100%;
}
.topbar-link:hover { color: var(--white); }

.topbar-divider { width: 1px; height: 16px; background: var(--gray-700); }

/* Language Selector with Dropdown */
.lang-selector {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  color: var(--gray-300);
  cursor: pointer;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  position: relative;
  height: 100%;
}
.lang-selector:hover { background: rgba(255, 255, 255, 0.05); color: var(--white); }
.lang-selector svg { width: 14px; height: 14px; }
.lang-selector .lang-arrow { 
  width: 12px; 
  height: 12px; 
  transition: transform var(--transition-fast);
}
.lang-selector:hover .lang-arrow { transform: rotate(180deg); }

/* Language Selector Toggle Button */
.lang-selector-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  background: none;
  border: none;
  color: inherit;
  font-size: inherit;
  cursor: pointer;
  padding: 0;
}

/* Language Flag */
.lang-flag {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  border-radius: 2px;
  overflow: hidden;
}

.lang-flag svg,
.lang-flag-svg {
  width: 100%;
  height: 100%;
}

/* Language Name */
.lang-name {
  font-size: var(--fs-xs);
  font-weight: 500;
}

.lang-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  background: var(--white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  min-width: 140px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition-fast);
  z-index: 1000;
  margin-top: 4px;
  padding: var(--space-1) 0;
}

.lang-selector:hover .lang-dropdown,
.lang-selector.active .lang-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-option {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  color: var(--text-primary);
  font-size: var(--fs-sm);
  transition: background var(--transition-fast);
}

.lang-option:first-child { border-radius: var(--radius-md) var(--radius-md) 0 0; }
.lang-option:last-child { border-radius: 0 0 var(--radius-md) var(--radius-md); }
.lang-option:hover { background: var(--gray-50); }
.lang-option.active { color: var(--primary); background: var(--primary-light); }

.lang-option .lang-flag {
  width: 18px;
  height: 18px;
}

.lang-option-name {
  font-size: var(--fs-sm);
}

@media (max-width: 768px) { 
  .topbar { 
    height: auto;
    padding: var(--space-2) 0;
  }
  .topbar .container {
    flex-direction: column;
    gap: var(--space-2);
  }
  .topbar-content {
    flex-direction: column;
    gap: var(--space-2);
  }
  .topbar-left {
    display: none;
  }
  .topbar-right {
    width: 100%;
    justify-content: center;
  }
  .topbar-divider {
    display: none;
  }
  .header { top: auto !important; }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .topbar-left { display: none; }
  .topbar-right { width: 100%; justify-content: flex-end; }
}

/* ============================================
   Header
   ============================================ */
.header {
  position: fixed;
  top: var(--topbar-height);
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: all var(--transition-base);
}
.header.scrolled { top: 0; border-bottom-color: var(--gray-200); }

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.logo { display: flex; align-items: center; gap: var(--space-3); }
.logo-mark { width: 36px; height: 36px; }
.logo-mark svg { width: 100%; height: 100%; }
.logo-text { font-size: var(--fs-base); font-weight: 700; letter-spacing: -0.01em; color: var(--text-primary); }
.logo-text span { color: var(--primary); }

.nav { display: flex; align-items: center; gap: var(--space-8); }
.nav-item {
  position: relative;
}
.nav-link {
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: var(--space-1) 0;
  display: flex;
  align-items: center;
  gap: var(--space-1);
}
.nav-link .nav-arrow {
  width: 12px;
  height: 12px;
  transition: transform var(--transition-fast);
}
.nav-item:hover .nav-arrow { transform: rotate(180deg); }
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--primary);
  transition: width var(--transition-base);
}
.nav-link:hover { color: var(--text-primary); }
.nav-link:hover::after { width: 100%; }

/* Nav Dropdown */
.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  min-width: 220px;
  background: var(--white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--gray-100);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
  z-index: 1000;
  padding: var(--space-2) 0;
  margin-top: var(--space-3);
}

.nav-item:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.nav-dropdown::before {
  content: '';
  position: absolute;
  top: -8px;
  left: 50%;
  transform: translateX(-50%);
  border: 8px solid transparent;
  border-bottom-color: var(--white);
}

.nav-dropdown a {
  display: block;
  padding: var(--space-3) var(--space-4);
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.nav-dropdown a:hover {
  background: var(--gray-50);
  color: var(--primary);
}

.nav-dropdown a svg {
  display: none;
}

.nav-dropdown a:hover svg {
  display: none;
}

.nav-dropdown-divider {
  height: 1px;
  background: var(--gray-100);
  margin: var(--space-2) 0;
}

.header-actions { display: flex; align-items: center; gap: var(--space-4); }

.header-contact {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  padding-right: var(--space-4);
  border-right: 1px solid var(--gray-200);
}
.header-contact svg { width: 16px; height: 16px; color: var(--primary); }

.mobile-menu-btn {
  display: none;
  width: 36px;
  height: 36px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.mobile-menu-btn span { display: block; width: 20px; height: 1.5px; background: var(--text-primary); }

@media (max-width: 1024px) {
  .nav, .header-contact { display: none; }
  .mobile-menu-btn { display: flex; }
  .header { top: 0; }
}

/* Mobile Sidebar */
.mobile-sidebar {
  position: fixed;
  top: 0;
  right: -300px;
  width: 300px;
  height: 100vh;
  background: var(--white);
  box-shadow: var(--shadow-xl);
  z-index: 2000;
  display: flex;
  flex-direction: column;
  transition: right var(--transition-base);
}

.mobile-sidebar.active {
  right: 0;
}

.mobile-sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--gray-200);
}

.mobile-sidebar-close {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.mobile-sidebar-close:hover {
  background: var(--gray-50);
  color: var(--text-primary);
}

.mobile-sidebar-close svg {
  width: 20px;
  height: 20px;
}

.mobile-nav {
  flex: 1;
  padding: 0;
  overflow-y: auto;
}

.mobile-nav-link {
  display: block;
  padding: var(--space-4) var(--space-5);
  font-size: var(--fs-base);
  font-weight: 500;
  color: var(--text-primary);
  border-bottom: 1px solid var(--gray-100);
  transition: all var(--transition-fast);
}

.mobile-nav-link:hover {
  background: var(--gray-50);
  color: var(--primary);
}

.mobile-sidebar-footer {
  padding: var(--space-5);
  border-top: 1px solid var(--gray-200);
  background: var(--gray-50);
}

.mobile-contact-info {
  margin-top: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.mobile-contact-info a {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
}

.mobile-sidebar-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1999;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.mobile-sidebar-overlay.active {
  opacity: 1;
  visibility: visible;
}

/* Hide mobile elements on desktop */
@media (min-width: 1025px) {
  .mobile-sidebar,
  .mobile-sidebar-overlay {
    display: none !important;
  }
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
  position: relative;
  min-height: 80vh;
  display: flex;
  align-items: center;
  background: linear-gradient(180deg, var(--white) 0%, var(--gray-50) 100%);
  overflow: hidden;
  padding-top: calc(var(--header-height) + var(--topbar-height));
}

.hero-bg { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }
.hero-grid {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(28, 158, 145, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(28, 158, 145, 0.02) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse 70% 60% at 70% 40%, black 20%, transparent 70%);
}
.hero-gradient {
  position: absolute;
  width: 900px;
  height: 900px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(28, 158, 145, 0.06) 0%, transparent 60%);
  top: -300px;
  right: -200px;
}
.hero-gradient-2 {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(21, 184, 166, 0.04) 0%, transparent 60%);
  bottom: -200px;
  left: -100px;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: var(--space-12);
  align-items: center;
  position: relative;
  z-index: 1;
  padding: var(--space-16) 0;
}

.hero-text { max-width: 540px; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--space-6);
}
.hero-badge-dot {
  width: 6px;
  height: 6px;
  background: var(--primary);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.035em;
  margin-bottom: var(--space-6);
  color: var(--text-primary);
}
.hero-title-line { display: block; }
.hero-title-accent {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: var(--fs-lg);
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: var(--space-8);
  max-width: 480px;
}

.hero-actions { display: flex; align-items: center; gap: var(--space-4); margin-bottom: var(--space-12); }

.hero-metrics {
  display: flex;
  gap: var(--space-10);
  padding-top: var(--space-8);
  border-top: 1px solid var(--gray-200);
}
.hero-metric-value {
  font-size: var(--fs-3xl);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1;
  margin-bottom: var(--space-1);
}
.hero-metric-value span {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-metric-label { font-size: var(--fs-xs); color: var(--text-muted); }

/* Hero Visual */
.hero-visual { position: relative; height: 500px; display: flex; align-items: center; justify-content: center; }
.molecule-scene { width: 100%; height: 100%; position: relative; perspective: 1200px; }

.hero-data-card {
  position: absolute;
  background: var(--white);
  border: 1px solid var(--gray-200);
  padding: var(--space-4) var(--space-5);
  box-shadow: var(--shadow-md);
  z-index: 10;
  border-radius: var(--radius-md);
}
.hero-data-card-1 { top: 10%; left: 0; animation: float1 6s ease-in-out infinite; }
.hero-data-card-2 { bottom: 15%; right: 5%; animation: float2 7s ease-in-out infinite; }
@keyframes float1 { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }
@keyframes float2 { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(8px); } }

.data-card-header { display: flex; align-items: center; gap: var(--space-2); margin-bottom: var(--space-2); }
.data-card-icon { width: 24px; height: 24px; display: flex; align-items: center; justify-content: center; }
.data-card-icon svg { width: 16px; height: 16px; color: var(--primary); }
.data-card-label { font-size: var(--fs-xs); font-weight: 600; color: var(--text-secondary); }
.data-card-value { font-size: var(--fs-lg); font-weight: 700; color: var(--text-primary); }
.data-card-value span {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.orbital-ring {
  position: absolute;
  border: 1px solid rgba(28, 158, 145, 0.12);
  border-radius: 50%;
  top: 50%;
  left: 50%;
}
.orbital-ring-1 { width: 300px; height: 300px; transform: translate(-50%, -50%) rotateX(70deg); animation: orbitPulse 4s ease-in-out infinite; }
.orbital-ring-2 { width: 400px; height: 400px; transform: translate(-50%, -50%) rotateX(70deg) rotateZ(30deg); animation: orbitPulse 5s ease-in-out infinite reverse; }
.orbital-ring-3 { width: 500px; height: 500px; transform: translate(-50%, -50%) rotateX(70deg) rotateZ(-20deg); border-style: dashed; animation: orbitPulse 6s ease-in-out infinite; }
@keyframes orbitPulse { 0%, 100% { opacity: 0.3; } 50% { opacity: 0.6; } }

@media (max-width: 1024px) {
  .hero { padding-top: var(--header-height); }
  .hero-content { grid-template-columns: 1fr; text-align: center; padding: var(--space-12) 0; }
  .hero-text { max-width: 100%; }
  .hero-description { max-width: 100%; margin: 0 auto var(--space-8); }
  .hero-actions { justify-content: center; }
  .hero-metrics { justify-content: center; }
  .hero-visual { height: 350px; }
  .hero-data-card { display: none; }
}

/* ============================================
   Vision Section
   ============================================ */
.vision { padding: var(--space-32) 0; background: var(--white); position: relative; }
.vision::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gray-200), transparent);
}

.vision-content {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: var(--space-16);
  align-items: center;
}
.vision-text { max-width: 460px; }
.vision-features { margin-top: var(--space-10); }
.vision-feature { display: flex; gap: var(--space-4); padding: var(--space-5) 0; border-bottom: 1px solid var(--gray-100); }
.vision-feature:last-child { border-bottom: none; }
.vision-feature-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
}
.vision-feature:hover .vision-feature-icon {
  border-color: var(--primary);
  background: var(--primary-gradient-soft);
}
.vision-feature-icon svg { width: 20px; height: 20px; color: var(--primary); }
.vision-feature-content h4 { font-size: var(--fs-sm); font-weight: 600; margin-bottom: var(--space-1); }
.vision-feature-content p { font-size: var(--fs-sm); color: var(--text-secondary); line-height: 1.6; }

.vision-visual { position: relative; }
.vision-image-grid { display: grid; grid-template-columns: 1fr 1fr; grid-template-rows: 1fr 1fr; gap: var(--space-4); }
.vision-image-item {
  position: relative;
  overflow: hidden;
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
}
.vision-image-item:first-child { grid-row: span 2; }
.vision-image-item::before {
  content: '';
  position: absolute;
  inset: 0;
  border: 2px solid var(--primary);
  border-radius: var(--radius-md);
  opacity: 0;
  transition: opacity var(--transition-base);
  z-index: 1;
}
.vision-image-item:hover::before { opacity: 1; }
.vision-image-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 180px;
}
.vision-image-placeholder {
  width: 100%;
  height: 100%;
  min-height: 180px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  background: linear-gradient(135deg, var(--gray-50) 0%, var(--bg-subtle) 100%);
  padding: var(--space-6);
}
.vision-image-placeholder svg { width: 40px; height: 40px; color: var(--gray-300); }
.vision-image-placeholder span { font-size: var(--fs-xs); color: var(--text-muted); text-align: center; }

@media (max-width: 1024px) {
  .vision-content { grid-template-columns: 1fr; gap: var(--space-12); }
}

/* ============================================
   Categories Section
   ============================================ */
.categories { padding: var(--space-32) 0; background: var(--gray-50); }
.categories-header { text-align: center; margin-bottom: var(--space-12); }
.categories-header .section-label { justify-content: center; }
.categories-header .section-label::before { display: none; }
.categories-header .section-subtitle { margin: 0 auto; }

.categories-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-4); }
.category-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  padding: var(--space-8) var(--space-6);
  text-align: center;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}
.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--primary-gradient);
  transform: scaleX(0);
  transition: transform var(--transition-base);
}
.category-card:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.category-card:hover::before { transform: scaleX(1); }
.category-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto var(--space-5);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-subtle);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}
.category-card:hover .category-icon {
  background: var(--primary-gradient-soft);
  border-color: rgba(28, 158, 145, 0.3);
}
.category-icon svg { width: 26px; height: 26px; color: var(--gray-500); transition: color var(--transition-base); }
.category-card:hover .category-icon svg { color: var(--primary); }
.category-title { font-size: var(--fs-base); font-weight: 600; margin-bottom: var(--space-1); }
.category-count { font-size: var(--fs-xs); color: var(--text-muted); }

@media (max-width: 1024px) { .categories-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .categories-grid { grid-template-columns: 1fr; } }

/* ============================================
   Products Section - Carousel
   ============================================ */
.products { padding: var(--space-32) 0; background: var(--white); overflow: hidden; }
.products-header { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: var(--space-10); }
.products-header-left { max-width: 500px; }
.products-header-right { display: flex; align-items: center; gap: var(--space-4); }

.carousel-controls { display: flex; gap: var(--space-2); }
.carousel-btn {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  transition: all var(--transition-base);
}
.carousel-btn:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-light); }
.carousel-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.carousel-btn svg { width: 20px; height: 20px; }

.products-carousel { position: relative; overflow: hidden; }
.products-track { display: flex; gap: var(--space-6); transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1); }

.product-card {
  flex: 0 0 calc(33.333% - 16px);
  min-width: calc(33.333% - 16px);
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition-base);
  position: relative;
}
.product-card:hover { 
  transform: translateY(-2px); 
  box-shadow: var(--shadow-md); 
  border-color: var(--primary);
}

.product-image {
  aspect-ratio: 1 / 1;
  background: linear-gradient(135deg, var(--gray-50) 0%, var(--bg-subtle) 100%);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.product-image::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 60%;
  background: linear-gradient(to top, var(--bg-subtle), transparent);
  pointer-events: none;
}
.product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}
.product-image-placeholder { display: flex; flex-direction: column; align-items: center; gap: var(--space-3); z-index: 1; }
.product-image-placeholder svg { width: 64px; height: 64px; color: var(--gray-300); }
.product-image-placeholder span { font-size: var(--fs-xs); color: var(--text-muted); }

.product-badge {
  position: absolute;
  top: var(--space-4);
  left: var(--space-4);
  padding: 6px var(--space-3);
  background: var(--primary-gradient);
  color: var(--white);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  z-index: 2;
}

.product-content { padding: var(--space-6); }
.product-category { font-size: 10px; font-weight: 600; color: var(--primary); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: var(--space-2); }
.product-title { font-size: var(--fs-lg); font-weight: 600; margin-bottom: var(--space-3); line-height: 1.35; }
.product-description {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-5);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.product-meta { display: flex; align-items: center; justify-content: space-between; padding-top: var(--space-4); border-top: 1px solid var(--gray-100); }
.product-specs { display: flex; gap: var(--space-4); }
.product-spec { font-size: var(--fs-xs); color: var(--text-muted); }
.product-spec strong { color: var(--text-primary); font-weight: 600; }
.product-link { display: flex; align-items: center; gap: var(--space-1); font-size: var(--fs-xs); font-weight: 600; color: var(--primary); }
.product-link svg { width: 14px; height: 14px; transition: transform var(--transition-fast); }
.product-card:hover .product-link svg { transform: translateX(3px); }

.carousel-pagination { display: flex; justify-content: center; gap: var(--space-2); margin-top: var(--space-8); }
.carousel-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gray-300);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
}
.carousel-dot:hover { background: var(--gray-400); }
.carousel-dot.active { width: 24px; border-radius: 4px; background: var(--primary-gradient); }

@media (max-width: 1024px) {
  .products-header { flex-direction: column; align-items: flex-start; gap: var(--space-6); }
  .product-card { flex: 0 0 calc(50% - 12px); min-width: calc(50% - 12px); }
}
@media (max-width: 640px) {
  .product-card { flex: 0 0 100%; min-width: 100%; }
}

/* ============================================
   Why Us Section - Enhanced
   ============================================ */
.why-us {
  padding: var(--space-32) 0;
  background: linear-gradient(135deg, var(--gray-950) 0%, #0c1219 50%, var(--gray-950) 100%);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.why-us-bg { position: absolute; inset: 0; pointer-events: none; }
.why-us-grid-pattern {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(28, 158, 145, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(28, 158, 145, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
}
.why-us-glow {
  position: absolute;
  width: 800px;
  height: 800px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(28, 158, 145, 0.12) 0%, transparent 50%);
  top: -400px;
  left: 50%;
  transform: translateX(-50%);
}
.why-us-glow-2 {
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(21, 184, 166, 0.08) 0%, transparent 50%);
  bottom: -200px;
  right: -100px;
}

.why-us-header { text-align: center; margin-bottom: var(--space-16); position: relative; z-index: 1; }
.why-us-header .section-label { justify-content: center; }
.why-us-header .section-label::before { display: none; }
.why-us-header .section-title {
  color: var(--white);
  background: linear-gradient(135deg, #fff 0%, rgba(255,255,255,0.8) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.why-us-header .section-subtitle { color: var(--gray-400); margin: 0 auto; }

.why-us-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-5); position: relative; z-index: 1; }
.why-us-card {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.04) 0%, rgba(255, 255, 255, 0.01) 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: var(--space-8) var(--space-6);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}
.why-us-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  padding: 1px;
  background: linear-gradient(135deg, rgba(28, 158, 145, 0.5) 0%, transparent 50%, rgba(21, 184, 166, 0.3) 100%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity var(--transition-base);
}
.why-us-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 100%;
  background: linear-gradient(180deg, rgba(28, 158, 145, 0.1) 0%, transparent 50%);
  opacity: 0;
  transition: opacity var(--transition-base);
}
.why-us-card:hover {
  transform: translateY(-4px);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.06) 0%, rgba(255, 255, 255, 0.02) 100%);
}
.why-us-card:hover::before { opacity: 1; }
.why-us-card:hover::after { opacity: 1; }

.why-us-number {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  font-size: var(--fs-3xl);
  font-weight: 800;
  background: linear-gradient(135deg, rgba(28, 158, 145, 0.2) 0%, rgba(255, 255, 255, 0.05) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  z-index: 1;
}
.why-us-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(28, 158, 145, 0.2) 0%, rgba(28, 158, 145, 0.08) 100%);
  border: 1px solid rgba(28, 158, 145, 0.25);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-6);
  position: relative;
  z-index: 1;
}
.why-us-icon svg { width: 26px; height: 26px; color: var(--primary); }
.why-us-title { font-size: var(--fs-lg); font-weight: 600; margin-bottom: var(--space-3); color: var(--white); position: relative; z-index: 1; }
.why-us-description { font-size: var(--fs-sm); color: var(--gray-400); line-height: 1.7; position: relative; z-index: 1; }

.why-us-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-1);
  margin-top: var(--space-16);
  background: linear-gradient(135deg, rgba(28, 158, 145, 0.08) 0%, rgba(255, 255, 255, 0.02) 100%);
  border: 1px solid rgba(28, 158, 145, 0.15);
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  z-index: 1;
}
.why-us-stat { padding: var(--space-8) var(--space-6); text-align: center; position: relative; }
.why-us-stat:not(:last-child)::after {
  content: '';
  position: absolute;
  right: 0;
  top: 20%;
  height: 60%;
  width: 1px;
  background: rgba(28, 158, 145, 0.2);
}
.why-us-stat-value {
  font-size: var(--fs-4xl);
  font-weight: 700;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: var(--space-2);
}
.why-us-stat-label { font-size: var(--fs-sm); color: var(--gray-400); }

@media (max-width: 1024px) {
  .why-us-grid { grid-template-columns: repeat(2, 1fr); }
  .why-us-stats { grid-template-columns: repeat(2, 1fr); }
  .why-us-stat:nth-child(2)::after { display: none; }
}
@media (max-width: 640px) {
  .why-us-grid { grid-template-columns: 1fr; }
  .why-us-stats { grid-template-columns: 1fr; }
  .why-us-stat::after { display: none; }
}

/* ============================================
   Trust Section
   ============================================ */
.trust { padding: var(--space-32) 0; background: var(--white); }
.trust-content { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-16); align-items: center; }
.trust-stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-4); margin-top: var(--space-10); }
.trust-stat {
  padding: var(--space-6);
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  text-align: center;
  transition: all var(--transition-base);
}
.trust-stat:hover { border-color: var(--primary); box-shadow: var(--shadow-glow); }
.trust-stat-value {
  font-size: var(--fs-4xl);
  font-weight: 700;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: var(--space-1);
}
.trust-stat-label { font-size: var(--fs-xs); color: var(--text-secondary); }

.trust-certifications { margin-top: var(--space-8); }
.trust-certifications h4 { font-size: var(--fs-xs); font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: var(--space-4); }
.certification-logos { display: flex; gap: var(--space-3); flex-wrap: wrap; }
.certification-logo {
  padding: var(--space-3) var(--space-5);
  background: var(--bg-subtle);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--text-muted);
}

.trust-visual { position: relative; }
.trust-image {
  width: 100%;
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, var(--gray-50) 0%, var(--bg-subtle) 100%);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.trust-image svg { width: 80px; height: 80px; color: var(--gray-300); }
.trust-image img { 
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-lg);
}
.trust-badge {
  position: absolute;
  bottom: var(--space-5);
  left: var(--space-5);
  right: var(--space-5);
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  box-shadow: var(--shadow-md);
}
.trust-badge-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-gradient-soft);
  border: 1px solid rgba(28, 158, 145, 0.2);
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}
.trust-badge-icon svg { width: 22px; height: 22px; color: var(--primary); }
.trust-badge-content h4 { font-size: var(--fs-sm); font-weight: 600; margin-bottom: 2px; }
.trust-badge-content p { font-size: var(--fs-xs); color: var(--text-muted); }

@media (max-width: 1024px) { .trust-content { grid-template-columns: 1fr; gap: var(--space-12); } }

/* ============================================
   Knowledge Section
   ============================================ */
.knowledge { padding: var(--space-32) 0; background: var(--gray-50); }
.knowledge-header { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: var(--space-10); }
.knowledge-header-left { max-width: 450px; }
.knowledge-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: var(--space-5); }

.knowledge-featured {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
  display: grid;
  grid-template-columns: 1fr 1fr;
}
.knowledge-featured:hover { border-color: var(--primary); box-shadow: var(--shadow-md); }
.knowledge-featured-image {
  background: linear-gradient(135deg, var(--gray-50) 0%, var(--bg-subtle) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 280px;
}
.knowledge-featured-image svg { width: 56px; height: 56px; color: var(--gray-300); }
.knowledge-featured-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.knowledge-featured-content { padding: var(--space-8); display: flex; flex-direction: column; }
.knowledge-meta { display: flex; align-items: center; gap: var(--space-3); margin-bottom: var(--space-4); }
.knowledge-tag {
  padding: 4px var(--space-3);
  background: var(--primary-gradient-soft);
  color: var(--primary);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
}
.knowledge-date { font-size: var(--fs-xs); color: var(--text-muted); }
.knowledge-title { font-size: var(--fs-lg); font-weight: 600; margin-bottom: var(--space-3); line-height: 1.35; }
.knowledge-excerpt { font-size: var(--fs-sm); color: var(--text-secondary); line-height: 1.7; margin-bottom: var(--space-5); flex-grow: 1; }
.knowledge-link { display: flex; align-items: center; gap: var(--space-2); font-size: var(--fs-sm); font-weight: 600; color: var(--primary); }
.knowledge-link svg { width: 16px; height: 16px; transition: transform var(--transition-fast); }
.knowledge-featured:hover .knowledge-link svg { transform: translateX(3px); }

.knowledge-list { display: flex; flex-direction: column; gap: var(--space-4); }
.knowledge-item {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  transition: all var(--transition-base);
}
.knowledge-item:hover { border-color: var(--primary); }
.knowledge-item .knowledge-meta { margin-bottom: var(--space-2); }
.knowledge-item .knowledge-title { font-size: var(--fs-sm); margin-bottom: 0; }

@media (max-width: 1024px) {
  .knowledge-header { flex-direction: column; align-items: flex-start; gap: var(--space-6); }
  .knowledge-grid { grid-template-columns: 1fr; }
  .knowledge-featured { grid-template-columns: 1fr; }
}

/* ============================================
   CTA Section
   ============================================ */
.cta { padding: var(--space-20) 0; background: var(--white); }
.cta-container {
  background: linear-gradient(135deg, var(--gray-950) 0%, #0c1015 100%);
  border-radius: var(--radius-lg);
  padding: var(--space-16) var(--space-12);
  position: relative;
  overflow: hidden;
}
.cta-bg { position: absolute; inset: 0; pointer-events: none; }
.cta-grid-pattern {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(28, 158, 145, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(28, 158, 145, 0.06) 1px, transparent 1px);
  background-size: 50px 50px;
  mask-image: radial-gradient(ellipse 60% 60% at 50% 50%, black 20%, transparent 70%);
}
.cta-glow {
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(28, 158, 145, 0.15) 0%, transparent 60%);
  top: -200px;
  right: -100px;
}
.cta-glow-2 {
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(21, 184, 166, 0.1) 0%, transparent 60%);
  bottom: -150px;
  left: -100px;
}
.cta-content { display: flex; align-items: center; justify-content: space-between; position: relative; z-index: 1; }
.cta-text { max-width: 540px; }
.cta-title { font-size: clamp(1.75rem, 3vw, var(--fs-4xl)); font-weight: 700; color: var(--white); margin-bottom: var(--space-3); }
.cta-description { font-size: var(--fs-base); color: var(--gray-400); line-height: 1.7; }
.cta-actions { display: flex; gap: var(--space-4); }
.cta .btn-outline { border-color: rgba(255, 255, 255, 0.15); color: var(--white); }
.cta .btn-outline:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-light); }

@media (max-width: 1024px) { .cta-content { flex-direction: column; text-align: center; gap: var(--space-8); } }

@media (max-width: 768px) { 
  .cta-actions { 
    flex-direction: column; 
    width: 100%; 
  } 
  .cta-actions .btn { 
    width: 100%; 
    justify-content: center; 
  } 
}

/* ============================================
   Footer
   ============================================ */
.footer { background: var(--gray-950); color: var(--white); padding-top: var(--space-16); }
.footer-main {
  display: grid;
  grid-template-columns: 1.3fr repeat(3, 1fr);
  gap: var(--space-10);
  padding-bottom: var(--space-12);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.footer-brand { max-width: 280px; }
.footer-logo { display: flex; align-items: center; gap: var(--space-3); margin-bottom: var(--space-5); }
.footer-logo-mark { width: 32px; height: 32px; }
.footer-logo-text { font-size: var(--fs-sm); font-weight: 700; }
.footer-logo-text span { color: var(--primary); }
.footer-description { font-size: var(--fs-sm); color: var(--gray-400); line-height: 1.7; margin-bottom: var(--space-5); }

.footer-social { display: flex; gap: var(--space-2); }
.footer-social-link {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}
.footer-social-link:hover { background: var(--primary); border-color: var(--primary); }
.footer-social-link svg { width: 16px; height: 16px; }

.footer-column h4 { font-size: var(--fs-xs); font-weight: 600; color: var(--white); margin-bottom: var(--space-5); text-transform: uppercase; letter-spacing: 0.1em; }
.footer-links { display: flex; flex-direction: column; gap: var(--space-3); }
.footer-link { font-size: var(--fs-sm); color: var(--gray-400); transition: color var(--transition-fast); }
.footer-link:hover { color: var(--primary); }

.footer-contact-item { display: flex; align-items: flex-start; gap: var(--space-3); margin-bottom: var(--space-3); }
.footer-contact-item svg { width: 16px; height: 16px; color: var(--primary); margin-top: 3px; flex-shrink: 0; }
.footer-contact-item span { font-size: var(--fs-sm); color: var(--gray-400); line-height: 1.5; }

.footer-bottom { display: flex; align-items: center; justify-content: space-between; padding: var(--space-5) 0; }
.footer-copyright { font-size: var(--fs-xs); color: var(--gray-500); }
.footer-legal { display: flex; gap: var(--space-6); }
.footer-legal a { font-size: var(--fs-xs); color: var(--gray-500); transition: color var(--transition-fast); }
.footer-legal a:hover { color: var(--primary); }

@media (max-width: 1024px) {
  .footer-main { grid-template-columns: repeat(2, 1fr); }
  .footer-brand { grid-column: span 2; max-width: 100%; }
}
@media (max-width: 640px) {
  .footer-main { grid-template-columns: 1fr; }
  .footer-brand { grid-column: span 1; }
  .footer-bottom { flex-direction: column; gap: var(--space-3); text-align: center; }
}

/* Animations */
.reveal { opacity: 0; transform: translateY(30px); transition: all 0.7s cubic-bezier(0.16, 1, 0.3, 1); }
.reveal.active { opacity: 1; transform: translateY(0); }
.reveal-left { opacity: 0; transform: translateX(-30px); transition: all 0.7s cubic-bezier(0.16, 1, 0.3, 1); }
.reveal-left.active { opacity: 1; transform: translateX(0); }
.reveal-right { opacity: 0; transform: translateX(30px); transition: all 0.7s cubic-bezier(0.16, 1, 0.3, 1); }
.reveal-right.active { opacity: 1; transform: translateX(0); }
.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.15s; }
.stagger-3 { transition-delay: 0.2s; }
.stagger-4 { transition-delay: 0.25s; }
.stagger-5 { transition-delay: 0.3s; }

/* ============================================
   Mobile Navigation Menu - Multi-level Support
   ============================================ */

/* ===========================================
   Mobile Navigation - Clean Redesign
   =========================================== */

/* 一级菜单 - 顶级链接（无子菜单） */
.mobile-nav > .mobile-nav-link {
  display: block;
  padding: var(--space-4) var(--space-5);
  font-size: var(--fs-base);
  font-weight: 500;
  color: var(--text-primary);
  border-bottom: 1px solid var(--gray-100);
  transition: color var(--transition-fast);
}

.mobile-nav > .mobile-nav-link:hover {
  color: var(--primary);
}

/* 一级菜单组（有子菜单） */
.mobile-nav-group {
  border-bottom: 1px solid var(--gray-100);
}

/* 一级菜单头部 - flex布局 */
.mobile-nav-header {
  display: flex;
  align-items: center;
}

/* 一级菜单链接 - 与顶级链接样式完全相同 */
.mobile-nav-header .mobile-nav-link {
  flex: 1;
  display: block;
  padding: var(--space-4) var(--space-5);
  font-size: var(--fs-base);
  font-weight: 500;
  color: var(--text-primary);
  transition: color var(--transition-fast);
}

.mobile-nav-header .mobile-nav-link:hover {
  color: var(--primary);
}

/* 一级菜单展开按钮 */
.mobile-nav-toggle {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  padding: 0;
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.mobile-nav-toggle:hover {
  color: var(--primary);
}

.mobile-nav-toggle svg {
  width: 20px;
  height: 20px;
  transition: transform var(--transition-fast);
}

.mobile-nav-group.active .mobile-nav-toggle svg {
  transform: rotate(180deg);
}

/* 一级下拉菜单 */
.mobile-nav-dropdown {
  display: none;
  background: var(--gray-50);
  border-top: 1px solid var(--gray-100);
}

.mobile-nav-group.active .mobile-nav-dropdown {
  display: block;
}

/* 下拉菜单内的链接（通用样式） */
.mobile-nav-dropdown > a {
  display: block;
  padding: var(--space-3) var(--space-5) var(--space-3) var(--space-8);
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  border-bottom: 1px solid var(--gray-100);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.mobile-nav-dropdown > a:last-child {
  border-bottom: none;
}

.mobile-nav-dropdown > a:hover {
  color: var(--primary);
  background: var(--gray-100);
}

/* 二级菜单链接（无子菜单） - 带class的版本 */
.mobile-nav-sublink {
  display: block;
  padding: var(--space-3) var(--space-5) var(--space-3) var(--space-8);
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  border-bottom: 1px solid var(--gray-100);
  transition: color var(--transition-fast);
}

.mobile-nav-sublink:last-child {
  border-bottom: none;
}

.mobile-nav-sublink:hover {
  color: var(--primary);
}

/* 二级菜单组（有子菜单） */
.mobile-nav-subgroup {
  border-bottom: 1px solid var(--gray-100);
}

.mobile-nav-subgroup:last-child {
  border-bottom: none;
}

/* 二级菜单头部 */
.mobile-nav-subheader {
  display: flex;
  align-items: center;
}

.mobile-nav-subheader > a {
  flex: 1;
  display: block;
  padding: var(--space-3) var(--space-5) var(--space-3) var(--space-8);
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.mobile-nav-subheader > a:hover {
  color: var(--primary);
}

/* 二级菜单展开按钮 */
.mobile-nav-subtoggle {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.mobile-nav-subtoggle:hover {
  color: var(--primary);
}

.mobile-nav-subtoggle svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-fast);
}

.mobile-nav-subgroup.active .mobile-nav-subtoggle svg {
  transform: rotate(180deg);
}

/* 三级子菜单 */
.mobile-nav-subdropdown {
  display: none;
  background: var(--white);
  border-top: 1px solid var(--gray-100);
}

.mobile-nav-subgroup.active .mobile-nav-subdropdown {
  display: block;
}

/* 三级菜单链接 */
.mobile-nav-subsublink {
  display: block;
  padding: var(--space-3) var(--space-5) var(--space-3) calc(var(--space-8) + var(--space-4));
  font-size: var(--fs-xs);
  color: var(--text-muted);
  border-bottom: 1px solid var(--gray-50);
  transition: color var(--transition-fast);
}

.mobile-nav-subsublink:last-child {
  border-bottom: none;
}

.mobile-nav-subsublink:hover {
  color: var(--primary);
}

/* Fix header position on scroll */
@media (max-width: 768px) {
  .header.scrolled {
    top: 0 !important;
  }
}

/* ============================================
   Form Messages
   ============================================ */
.form-message {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  border-radius: var(--radius-md, 8px);
  margin-top: 16px;
  font-size: var(--fs-sm, 14px);
  animation: slideIn 0.3s ease;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.form-message.fade-out {
  opacity: 0;
  transform: translateY(-10px);
  transition: all 0.3s ease;
}

.form-message-success {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #059669;
}

.form-message-error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #dc2626;
}

.form-message-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  font-size: 12px;
  font-weight: 600;
}

.form-message-success .form-message-icon {
  background: #10b981;
  color: #fff;
}

.form-message-error .form-message-icon {
  background: #ef4444;
  color: #fff;
}

/* Button spinner */
.btn .spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}