:root {
  /* Google Four Colors - Core Brand - Enhanced Saturation */
  --picture-primary: #1a73e8;
  --picture-light: rgba(26, 115, 232, 0.18);
  --picture-gradient: linear-gradient(135deg, #4285F4 0%, #1a73e8 100%);
  
  --video-primary: #d93025;
  --video-light: rgba(217, 48, 37, 0.18);
  --video-gradient: linear-gradient(135deg, #EA4335 0%, #d93025 100%);
  
  --file-primary: #f9ab00;
  --file-light: rgba(249, 171, 0, 0.18);
  --file-gradient: linear-gradient(135deg, #FBBC05 0%, #f9ab00 100%);
  
  --app-primary: #188038;
  --app-light: rgba(24, 128, 56, 0.18);
  --app-gradient: linear-gradient(135deg, #34A853 0%, #188038 100%);
  
  --for-primary: #7c3aed;
  --for-light: rgba(124, 58, 237, 0.18);
  --for-gradient: linear-gradient(135deg, #8B5CF6 0%, #7c3aed 100%);
  
  /* Semantic Colors */
  --primary: #1a73e8;
  --primary-hover: #1557b0;
  --success: #188038;
  --warning: #f9ab00;
  --danger: #d93025;
  
  /* Glass Effect Variables */
  --glass-bg: rgba(255, 255, 255, 0.72);
  --glass-border: rgba(255, 255, 255, 0.5);
  --glass-shadow: rgba(0, 0, 0, 0.06);
  --glass-highlight: rgba(255, 255, 255, 0.9);
  
  /* Background & Text */
  --bg: #F5F7FA;
  --bg-gradient-start: #E8ECF1;
  --bg-gradient-end: #F0F4F8;
  --card-bg: rgba(255, 255, 255, 0.8);
  --text: #1F2937;
  --text-secondary: #6B7280;
  --text-tertiary: #9CA3AF;
  
  /* Elevation */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 10px 10px -5px rgba(0, 0, 0, 0.03);
  --shadow-glass: 0 8px 32px 0 rgba(31, 38, 135, 0.12);
  
  /* Enhanced Service Card Shadows */
  --shadow-picture: 0 8px 32px rgba(26, 115, 232, 0.25);
  --shadow-video: 0 8px 32px rgba(217, 48, 37, 0.25);
  --shadow-file: 0 8px 32px rgba(249, 171, 0, 0.25);
  --shadow-app: 0 8px 32px rgba(24, 128, 56, 0.25);
  
  /* Spacing */
  --nav-height: 72px;
  --section-spacing: 120px;
  --container-max: 1280px;
  
  /* Animation - Refined Easing */
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out-back: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-in-out-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-spring: cubic-bezier(0.5, 0, 0, 1.5);
  
  --transition-fast: 0.2s var(--ease-out-expo);
  --transition-base: 0.3s var(--ease-out-expo);
  --transition-slow: 0.5s var(--ease-out-expo);
  --transition-spring: 0.5s var(--ease-out-back);
  
  /* Current Theme Color - Dynamic */
  --current-primary: #1a73e8;
}

/* Dark Mode */
[data-theme="dark"] {
  --glass-bg: rgba(17, 24, 39, 0.8);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-shadow: rgba(0, 0, 0, 0.4);
  --glass-highlight: rgba(255, 255, 255, 0.05);
  
  --bg: #0F1115;
  --bg-gradient-start: #0F1115;
  --bg-gradient-end: #1A1D23;
  --card-bg: rgba(31, 41, 55, 0.7);
  --text: #F9FAFB;
  --text-secondary: #D1D5DB;
  --text-tertiary: #9CA3AF;
  
  --shadow-glass: 0 8px 32px 0 rgba(0, 0, 0, 0.5);
  
  /* Adjusted light colors for dark mode */
  --picture-light: rgba(66, 133, 244, 0.25);
  --video-light: rgba(234, 67, 53, 0.25);
  --file-light: rgba(251, 188, 5, 0.25);
  --app-light: rgba(52, 168, 83, 0.25);
  --for-light: rgba(139, 92, 246, 0.25);
  
  /* Enhanced shadows for dark mode */
  --shadow-picture: 0 8px 32px rgba(66, 133, 244, 0.35);
  --shadow-video: 0 8px 32px rgba(234, 67, 53, 0.35);
  --shadow-file: 0 8px 32px rgba(251, 188, 5, 0.35);
  --shadow-app: 0 8px 32px rgba(52, 168, 83, 0.35);
}

/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 50%, var(--bg) 100%);
  background-attachment: fixed;
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Liquid Glass Background Effect */
.liquid-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: -1;
  overflow: hidden;
}

.liquid-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
  animation: float 20s infinite ease-in-out;
}

.blob-1 {
  width: 600px;
  height: 600px;
  background: linear-gradient(135deg, var(--picture-primary), var(--app-primary));
  top: -200px;
  right: -100px;
  animation-delay: 0s;
}

.blob-2 {
  width: 500px;
  height: 500px;
  background: linear-gradient(135deg, var(--video-primary), var(--file-primary));
  bottom: -150px;
  left: -100px;
  animation-delay: -5s;
}

.blob-3 {
  width: 400px;
  height: 400px;
  background: linear-gradient(135deg, var(--file-primary), var(--picture-primary));
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation-delay: -10s;
  opacity: 0.2;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -30px) scale(1.1); }
  66% { transform: translate(-20px, 20px) scale(0.9); }
}

/* Glass Morphism Utilities */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--glass-border);
  box-shadow: 
    0 4px 6px -1px var(--glass-shadow),
    0 2px 4px -1px rgba(0, 0, 0, 0.04),
    inset 0 1px 0 0 var(--glass-highlight);
}

.glass-strong {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(30px) saturate(200%);
  -webkit-backdrop-filter: blur(30px) saturate(200%);
  border: 1px solid rgba(255, 255, 255, 0.6);
}

[data-theme="dark"] .glass-strong {
  background: rgba(17, 24, 39, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

/* Announcement Modal Styles */
.announcement-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 3000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.4s var(--ease-out-expo);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

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

.announcement-modal {
  width: 100%;
  max-width: 680px;
  max-height: 90vh;
  overflow-y: auto;
  border-radius: 28px;
  position: relative;
  transform: scale(0.9) translateY(20px);
  opacity: 0;
  transition: all 0.5s var(--ease-out-expo);
}

.announcement-overlay.active .announcement-modal {
  transform: scale(1) translateY(0);
  opacity: 1;
}

.announcement-header {
  padding: 32px 32px 0;
  text-align: center;
  position: relative;
}

.announcement-icon {
  width: 72px;
  height: 72px;
  border-radius: 24px;
  background: linear-gradient(135deg, #4285F4 0%, #EA4335 33%, #FBBC05 66%, #34A853 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  box-shadow: 0 8px 32px rgba(66, 133, 244, 0.35);
  animation: pulse-icon 2s infinite;
}

@keyframes pulse-icon {
  0%, 100% { transform: scale(1); box-shadow: 0 8px 32px rgba(66, 133, 244, 0.35); }
  50% { transform: scale(1.05); box-shadow: 0 12px 40px rgba(66, 133, 244, 0.5); }
}

.announcement-icon i {
  font-size: 32px;
  color: white;
}

.announcement-title {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 8px;
  background: linear-gradient(135deg, #4285F4 0%, #EA4335 33%, #FBBC05 66%, #34A853 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.announcement-subtitle {
  font-size: 14px;
  color: var(--text-tertiary);
  font-weight: 500;
}

.announcement-content {
  padding: 24px 32px 32px;
}

.announcement-text {
  font-size: 15px;
  line-height: 1.9;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.announcement-text p {
  margin-bottom: 16px;
}

.announcement-text strong {
  color: var(--text);
  font-weight: 600;
}

.announcement-highlight {
  background: linear-gradient(135deg, rgba(26, 115, 232, 0.08), rgba(24, 128, 56, 0.08));
  border-left: 4px solid var(--picture-primary);
  padding: 20px 24px;
  border-radius: 0 16px 16px 0;
  margin: 24px 0;
}

.announcement-highlight p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
}

.announcement-signature {
  text-align: right;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid rgba(0, 0, 0, 0.08);
}

[data-theme="dark"] .announcement-signature {
  border-top-color: rgba(255, 255, 255, 0.1);
}

.announcement-signature p {
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 500;
}

.announcement-close {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  border: none;
  background: rgba(0, 0, 0, 0.05);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  color: var(--text-secondary);
  font-size: 18px;
}

.announcement-close:hover {
  background: rgba(0, 0, 0, 0.1);
  color: var(--text);
  transform: rotate(90deg);
}

[data-theme="dark"] .announcement-close {
  background: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .announcement-close:hover {
  background: rgba(255, 255, 255, 0.15);
}

.announcement-actions {
  display: flex;
  gap: 12px;
  padding: 0 32px 32px;
}

.announcement-btn-primary {
  flex: 1;
  padding: 14px 24px;
  background: linear-gradient(135deg, #4285F4 0%, #34A853 100%);
  color: white;
  border: none;
  border-radius: 14px;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: 0 4px 14px rgba(26, 115, 232, 0.35);
}

.announcement-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(26, 115, 232, 0.45);
}

.announcement-btn-secondary {
  padding: 14px 20px;
  background: rgba(0, 0, 0, 0.05);
  color: var(--text-secondary);
  border: none;
  border-radius: 14px;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 8px;
}

.announcement-btn-secondary:hover {
  background: rgba(0, 0, 0, 0.08);
  color: var(--text);
}

[data-theme="dark"] .announcement-btn-secondary {
  background: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .announcement-btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
}

/* Floating Announcement Button */
.announcement-float-btn {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 56px;
  height: 56px;
  border-radius: 20px;
  background: linear-gradient(135deg, #4285F4 0%, #EA4335 33%, #FBBC05 66%, #34A853 100%);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 32px rgba(66, 133, 244, 0.4);
  z-index: 2500;
  opacity: 0;
  transform: scale(0) rotate(-180deg);
  transition: all 0.5s var(--ease-out-back);
  animation: float-btn-pulse 2s infinite;
}

@keyframes float-btn-pulse {
  0%, 100% { box-shadow: 0 8px 32px rgba(66, 133, 244, 0.4); }
  50% { box-shadow: 0 12px 40px rgba(66, 133, 244, 0.6); }
}

.announcement-float-btn.visible {
  opacity: 1;
  transform: scale(1) rotate(0deg);
}

.announcement-float-btn:hover {
  transform: scale(1.1) rotate(5deg);
  box-shadow: 0 12px 40px rgba(66, 133, 244, 0.5);
}

.announcement-float-btn i {
  font-size: 24px;
  color: white;
}

.announcement-float-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  width: 20px;
  height: 20px;
  background: #EA4335;
  border-radius: 50%;
  border: 3px solid white;
  display: none;
}

[data-theme="dark"] .announcement-float-badge {
  border-color: var(--bg);
}

.announcement-float-btn.has-new .announcement-float-badge {
  display: block;
  animation: badge-bounce 0.6s var(--ease-out-back);
}

@keyframes badge-bounce {
  0% { transform: scale(0); }
  50% { transform: scale(1.2); }
  100% { transform: scale(1); }
}

/* Navigation - Floating Glass Bar */
.navbar {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 32px);
  max-width: 1200px;
  height: var(--nav-height);
  z-index: 1000;
  border-radius: 24px;
  transition: all var(--transition-base);
}

.navbar.scrolled {
  width: calc(100% - 48px);
  max-width: 900px;
  height: 64px;
  border-radius: 32px;
  box-shadow: var(--shadow-glass);
}

.nav-container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  position: relative;
}

.nav-brand {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.5px;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 10px;
  position: relative;
  z-index: 2;
  transition: transform var(--transition-fast);
}

.nav-brand:hover {
  transform: scale(1.02);
}

.nav-brand-text {
  background: linear-gradient(135deg, #4285F4 0%, #EA4335 33%, #FBBC05 66%, #34A853 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  position: relative;
}

.nav-brand::before {
  content: '';
  position: absolute;
  inset: -8px -12px;
  background: linear-gradient(135deg, var(--picture-primary), var(--video-primary));
  border-radius: 12px;
  opacity: 0;
  transition: opacity var(--transition-fast);
  z-index: -1;
}

.nav-brand:hover::before {
  opacity: 0.1;
}

/* Navigation Links - Pill Style */
.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 0, 0, 0.03);
  padding: 6px;
  border-radius: 100px;
  position: relative;
}

[data-theme="dark"] .nav-links {
  background: rgba(255, 255, 255, 0.06);
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 14px;
  padding: 8px 16px;
  border-radius: 100px;
  transition: all var(--transition-fast);
  position: relative;
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.6);
}

[data-theme="dark"] .nav-link:hover {
  background: rgba(255, 255, 255, 0.12);
}

.nav-link.active {
  color: white;
  font-weight: 600;
}

/* Active Pill Background */
.nav-pill {
  position: absolute;
  height: calc(100% - 12px);
  background: var(--current-primary);
  border-radius: 100px;
  transition: all var(--transition-spring);
  z-index: 0;
  box-shadow: 0 2px 8px rgba(26, 115, 232, 0.35);
}

.nav-link[data-page="picture"].active ~ .nav-pill,
.mobile-nav-link[data-page="picture"].active ~ .nav-pill {
  background: var(--picture-primary);
  box-shadow: 0 2px 8px rgba(26, 115, 232, 0.35);
}

.nav-link[data-page="video"].active ~ .nav-pill {
  background: var(--video-primary);
  box-shadow: 0 2px 8px rgba(217, 48, 37, 0.35);
}

.nav-link[data-page="file"].active ~ .nav-pill {
  background: var(--file-primary);
  box-shadow: 0 2px 8px rgba(249, 171, 0, 0.35);
}

.nav-link[data-page="app"].active ~ .nav-pill {
  background: var(--app-primary);
  box-shadow: 0 2px 8px rgba(24, 128, 56, 0.35);
}

.nav-link[data-page="for"].active ~ .nav-pill {
  background: var(--for-primary);
  box-shadow: 0 2px 8px rgba(124, 58, 237, 0.35);
}

.nav-link[data-page="home"].active ~ .nav-pill,
.nav-link[data-page="about"].active ~ .nav-pill {
  background: var(--picture-primary);
  box-shadow: 0 2px 8px rgba(26, 115, 232, 0.35);
}

/* Theme Toggle - Liquid Button */
.theme-toggle {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: none;
  background: rgba(0, 0, 0, 0.03);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.theme-toggle::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--current-primary);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.theme-toggle:hover {
  transform: scale(1.1) rotate(15deg);
  background: rgba(26, 115, 232, 0.12);
}

.theme-toggle:hover::before {
  opacity: 0.12;
}

.theme-toggle svg {
  width: 20px;
  height: 20px;
  color: var(--text);
  position: relative;
  z-index: 1;
  transition: transform var(--transition-slow);
}

.theme-toggle:hover svg {
  transform: rotate(180deg);
}

/* Mobile Menu Button */
.mobile-menu-btn {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  border: none;
  background: transparent;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  color: var(--text);
  transition: all var(--transition-fast);
}

.mobile-menu-btn:hover {
  background: rgba(0, 0, 0, 0.05);
}

/* Mobile Menu - Full Screen Glass */
.mobile-menu {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

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

.mobile-menu-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(4px);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.mobile-menu.active .mobile-menu-backdrop {
  opacity: 1;
}

.mobile-menu-content {
  position: absolute;
  top: 100px;
  left: 16px;
  right: 16px;
  padding: 24px;
  border-radius: 24px;
  transform: translateY(-20px);
  opacity: 0;
  transition: all var(--transition-spring);
  max-height: calc(100vh - 120px);
  overflow-y: auto;
}

.mobile-menu.active .mobile-menu-content {
  transform: translateY(0);
  opacity: 1;
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.mobile-nav-link {
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  font-size: 18px;
  padding: 16px 20px;
  border-radius: 16px;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 12px;
  position: relative;
  overflow: hidden;
}

.mobile-nav-link::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.mobile-nav-link[data-page="picture"]::before { background: var(--picture-light); }
.mobile-nav-link[data-page="video"]::before { background: var(--video-light); }
.mobile-nav-link[data-page="file"]::before { background: var(--file-light); }
.mobile-nav-link[data-page="app"]::before { background: var(--app-light); }
.mobile-nav-link[data-page="for"]::before { background: var(--for-light); }

.mobile-nav-link:hover::before,
.mobile-nav-link.active::before {
  opacity: 1;
}

.mobile-nav-link.active {
  color: var(--text);
}

.mobile-nav-link[data-page="picture"].active { color: var(--picture-primary); }
.mobile-nav-link[data-page="video"].active { color: var(--video-primary); }
.mobile-nav-link[data-page="file"].active { color: var(--file-primary); }
.mobile-nav-link[data-page="app"].active { color: var(--app-primary); }
.mobile-nav-link[data-page="for"].active { color: var(--for-primary); }

/* Pages */
.page {
  min-height: 100vh;
  padding-top: calc(var(--nav-height) + 32px);
  display: none;
  opacity: 0;
  transform: translateY(20px);
  transition: all var(--transition-slow);
}

.page.active {
  display: block;
  opacity: 1;
  transform: translateY(0);
}

/* Sub-page Entrance Animations */
.page-enter-animation {
  animation: pageEnter 0.6s var(--ease-out-expo) forwards;
}

@keyframes pageEnter {
  0% {
    opacity: 0;
    transform: translateY(30px) scale(0.98);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* Staggered entrance for page elements */
.stagger-enter {
  opacity: 0;
  transform: translateY(20px);
}

.stagger-enter.active {
  animation: staggerEnter 0.5s var(--ease-out-expo) forwards;
}

@keyframes staggerEnter {
  0% {
    opacity: 0;
    transform: translateY(20px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Delay utilities */
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }
.delay-5 { animation-delay: 0.5s; }

/* Home Hero Section */
.hero {
  min-height: calc(100vh - var(--nav-height) - 32px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px 24px;
  position: relative;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(26, 115, 232, 0.12);
  border: 1px solid rgba(26, 115, 232, 0.2);
  border-radius: 100px;
  font-size: 14px;
  font-weight: 600;
  color: var(--picture-primary);
  margin-bottom: 32px;
  animation: fadeInDown 0.8s ease;
  transition: all var(--transition-fast);
}

.hero-badge:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(26, 115, 232, 0.2);
}

.hero-title {
  font-size: clamp(48px, 10vw, 96px);
  font-weight: 900;
  line-height: 1;
  margin-bottom: 24px;
  letter-spacing: -3px;
  animation: fadeInUp 0.8s ease 0.1s both;
}

.hero-title .letter {
  display: inline-block;
  transition: transform var(--transition-spring);
  cursor: default;
}

.hero-title .letter:hover {
  transform: translateY(-10px) scale(1.1);
}

.hero-title .letter-l { color: var(--picture-primary); }
.hero-title .letter-i { color: var(--video-primary); }
.hero-title .letter-n { color: var(--file-primary); }
.hero-title .letter-k { color: var(--app-primary); }

.hero-subtitle {
  font-size: 20px;
  color: var(--text-secondary);
  max-width: 500px;
  margin-bottom: 48px;
  animation: fadeInUp 0.8s ease 0.2s both;
  font-weight: 400;
}

.hero-cta {
  display: flex;
  gap: 16px;
  animation: fadeInUp 0.8s ease 0.3s both;
}

/* Enhanced Primary Button with Ripple */
.btn-primary {
  padding: 16px 32px;
  background: var(--current-primary);
  color: white;
  border: none;
  border-radius: 100px;
  font-weight: 600;
  font-size: 16px;
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: 0 4px 14px rgba(26, 115, 232, 0.4);
  position: relative;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transition: left 0.5s;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(26, 115, 232, 0.5);
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-primary:active {
  transform: translateY(0) scale(0.98);
}

/* Ripple Effect */
.ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.4);
  transform: scale(0);
  animation: rippleEffect 0.6s ease-out;
  pointer-events: none;
}

@keyframes rippleEffect {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

.btn-secondary {
  padding: 16px 32px;
  background: rgba(0, 0, 0, 0.05);
  color: var(--text);
  border: 1px solid rgba(0, 0, 0, 0.1);
  border-radius: 100px;
  font-weight: 600;
  font-size: 16px;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

[data-theme="dark"] .btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.15);
  color: var(--text);
}

.btn-secondary:hover {
  background: rgba(0, 0, 0, 0.08);
  transform: translateY(-2px);
}

.btn-secondary:active {
  transform: translateY(0) scale(0.98);
}

/* Service Cards - Enhanced Colors */
.services-section {
  padding: 80px 24px;
  max-width: var(--container-max);
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-label {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--text-tertiary);
  margin-bottom: 12px;
}

.section-title {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -1px;
}

.section-desc {
  color: var(--text-secondary);
  font-size: 18px;
  max-width: 600px;
  margin: 0 auto;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.service-card {
  position: relative;
  padding: 32px;
  border-radius: 24px;
  transition: all var(--transition-spring);
  cursor: pointer;
  overflow: hidden;
  transform-style: preserve-3d;
  perspective: 1000px;
}

.service-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--card-bg), rgba(255,255,255,0.5));
  border-radius: 24px;
  z-index: 0;
  transition: all var(--transition-base);
}

[data-theme="dark"] .service-card::before {
  background: linear-gradient(135deg, var(--card-bg), rgba(255,255,255,0.08));
}

.service-card:hover {
  transform: translateY(-8px) rotateX(2deg);
}

.service-card:hover::before {
  transform: scale(1.02);
}

/* Enhanced Card Colors */
.service-card.picture::before {
  border: 1px solid rgba(26, 115, 232, 0.3);
  box-shadow: 0 4px 20px rgba(26, 115, 232, 0.15);
}
.service-card.video::before {
  border: 1px solid rgba(217, 48, 37, 0.3);
  box-shadow: 0 4px 20px rgba(217, 48, 37, 0.15);
}
.service-card.file::before {
  border: 1px solid rgba(249, 171, 0, 0.3);
  box-shadow: 0 4px 20px rgba(249, 171, 0, 0.15);
}
.service-card.app::before {
  border: 1px solid rgba(24, 128, 56, 0.3);
  box-shadow: 0 4px 20px rgba(24, 128, 56, 0.15);
}

.service-card.picture:hover::before {
  box-shadow: var(--shadow-picture);
  border-color: rgba(26, 115, 232, 0.5);
}
.service-card.video:hover::before {
  box-shadow: var(--shadow-video);
  border-color: rgba(217, 48, 37, 0.5);
}
.service-card.file:hover::before {
  box-shadow: var(--shadow-file);
  border-color: rgba(249, 171, 0, 0.5);
}
.service-card.app:hover::before {
  box-shadow: var(--shadow-app);
  border-color: rgba(24, 128, 56, 0.5);
}

.card-content {
  position: relative;
  z-index: 1;
}

/* Enhanced Icon Wrappers */
.card-icon-wrapper {
  width: 64px;
  height: 64px;
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  position: relative;
  overflow: hidden;
  transition: all var(--transition-spring);
}

.card-icon-wrapper::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0.9;
  transition: all var(--transition-base);
}

.service-card:hover .card-icon-wrapper {
  transform: scale(1.1) rotate(-5deg);
}

.picture .card-icon-wrapper::before { 
  background: var(--picture-gradient);
  box-shadow: 0 8px 24px rgba(26, 115, 232, 0.4);
}
.video .card-icon-wrapper::before { 
  background: var(--video-gradient);
  box-shadow: 0 8px 24px rgba(217, 48, 37, 0.4);
}
.file .card-icon-wrapper::before { 
  background: var(--file-gradient);
  box-shadow: 0 8px 24px rgba(249, 171, 0, 0.4);
}
.app .card-icon-wrapper::before { 
  background: var(--app-gradient);
  box-shadow: 0 8px 24px rgba(24, 128, 56, 0.4);
}

.card-icon {
  width: 28px;
  height: 28px;
  color: white;
  position: relative;
  z-index: 1;
  transition: transform var(--transition-spring);
}

.service-card:hover .card-icon {
  transform: scale(1.1);
}

.card-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text);
  transition: color var(--transition-fast);
}

.service-card:hover .card-title {
  color: var(--text);
}

.card-description {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.6;
  margin-bottom: 24px;
}

.card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.tag {
  padding: 6px 12px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
  transition: all var(--transition-fast);
}

.tag:hover {
  transform: translateY(-1px);
}

.tag-primary {
  color: white;
}

.picture .tag-primary { background: var(--picture-primary); }
.video .tag-primary { background: var(--video-primary); }
.file .tag-primary { background: var(--file-primary); }
.app .tag-primary { background: var(--app-primary); }

.tag-secondary {
  background: rgba(0, 0, 0, 0.05);
  color: var(--text-secondary);
}

[data-theme="dark"] .tag-secondary {
  background: rgba(255, 255, 255, 0.12);
}

.card-action {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 15px;
  transition: gap var(--transition-fast);
}

.picture .card-action { color: var(--picture-primary); }
.video .card-action { color: var(--video-primary); }
.file .card-action { color: var(--file-primary); }
.app .card-action { color: var(--app-primary); }

.service-card:hover .card-action {
  gap: 12px;
}

/* Free Badge - Enhanced */
.free-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  padding: 6px 12px;
  background: linear-gradient(135deg, #10B981, #059669);
  color: white;
  font-size: 11px;
  font-weight: 700;
  border-radius: 100px;
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.4);
  z-index: 2;
  animation: pulse-badge 2s infinite;
  transition: all var(--transition-fast);
}

.service-card:hover .free-badge {
  transform: scale(1.05);
  box-shadow: 0 6px 16px rgba(16, 185, 129, 0.5);
}

@keyframes pulse-badge {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

/* Link Network Section */
.link-network-section {
  padding: 100px 24px;
  position: relative;
  overflow: hidden;
}

.link-network-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26, 115, 232, 0.04), rgba(217, 48, 37, 0.04));
  z-index: -1;
}

.link-network-container {
  max-width: var(--container-max);
  margin: 0 auto;
}

.link-network-header {
  text-align: center;
  margin-bottom: 48px;
}

.link-network-title {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 12px;
  background: linear-gradient(135deg, #4285F4 0%, #EA4335 33%, #FBBC05 66%, #34A853 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.scroll-container {
  position: relative;
  overflow-x: auto;
  overflow-y: hidden;
  padding: 20px 0;
  margin: 0 -24px;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.scroll-container::-webkit-scrollbar {
  display: none;
}

.scroll-track {
  display: flex;
  gap: 20px;
  padding: 0 24px;
  width: max-content;
}

.network-card {
  width: 320px;
  padding: 28px;
  border-radius: 24px;
  transition: all var(--transition-spring);
  cursor: pointer;
  position: relative;
}

.network-card:hover {
  transform: translateY(-6px) scale(1.02);
}

.network-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.network-avatar {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  object-fit: cover;
  border: 2px solid rgba(255, 255, 255, 0.5);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-fast);
}

.network-card:hover .network-avatar {
  transform: scale(1.1);
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}

.network-info h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 4px;
  transition: color var(--transition-fast);
}

.network-card:hover .network-info h3 {
  color: var(--picture-primary);
}

.network-info p {
  font-size: 13px;
  color: var(--text-tertiary);
}

.network-quote {
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-secondary);
  font-style: italic;
  margin-bottom: 20px;
  position: relative;
  padding-left: 20px;
}

.network-quote::before {
  content: '"';
  position: absolute;
  left: 0;
  top: -8px;
  font-size: 36px;
  color: var(--picture-primary);
  opacity: 0.3;
  font-family: Georgia, serif;
}

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

.role-badge {
  padding: 6px 12px;
  background: rgba(139, 92, 246, 0.12);
  color: #8B5CF6;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
  transition: all var(--transition-fast);
}

.network-card:hover .role-badge {
  background: rgba(139, 92, 246, 0.2);
  transform: translateX(4px);
}

.visit-link {
  width: 36px;
  height: 36px;
  border-radius: 12px;
  background: rgba(0, 0, 0, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text);
  transition: all var(--transition-fast);
}

.visit-link:hover {
  background: var(--picture-primary);
  color: white;
  transform: rotate(45deg) scale(1.1);
}

.join-card {
  width: 320px;
  padding: 40px;
  border-radius: 24px;
  border: 2px dashed rgba(139, 92, 246, 0.3);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  transition: all var(--transition-spring);
  cursor: pointer;
}

.join-card:hover {
  border-style: solid;
  border-color: #8B5CF6;
  background: rgba(139, 92, 246, 0.08);
  transform: translateY(-6px) scale(1.02);
}

.join-icon {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, #8B5CF6, #7c3aed);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 32px;
  margin-bottom: 24px;
  box-shadow: 0 8px 24px rgba(139, 92, 246, 0.35);
  transition: all var(--transition-spring);
}

.join-card:hover .join-icon {
  transform: scale(1.1) rotate(90deg);
  box-shadow: 0 12px 32px rgba(139, 92, 246, 0.45);
}

/* Features Section */
.features-section {
  padding: 80px 24px;
}

.features-grid {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.feature-item {
  padding: 24px;
  border-radius: 20px;
  display: flex;
  align-items: center;
  gap: 20px;
  transition: all var(--transition-fast);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.feature-item::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
  transform: translateX(-100%);
  transition: transform 0.6s;
}

.feature-item:hover::before {
  transform: translateX(100%);
}

.feature-item:hover {
  transform: translateX(8px);
}

.feature-icon-box {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 24px;
  transition: all var(--transition-spring);
}

.feature-item:hover .feature-icon-box {
  transform: scale(1.1) rotate(5deg);
}

.feature-item:nth-child(1) .feature-icon-box {
  background: rgba(26, 115, 232, 0.12);
  color: var(--picture-primary);
}

.feature-item:nth-child(2) .feature-icon-box {
  background: rgba(217, 48, 37, 0.12);
  color: var(--video-primary);
}

.feature-content h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 4px;
  transition: color var(--transition-fast);
}

.feature-item:hover .feature-content h3 {
  color: var(--text);
}

.feature-content p {
  color: var(--text-secondary);
  font-size: 14px;
}

.feature-arrow {
  margin-left: auto;
  color: var(--text-tertiary);
  transition: all var(--transition-fast);
}

.feature-item:hover .feature-arrow {
  color: var(--text);
  transform: translateX(6px);
}

/* Sub Pages - Enhanced */
.page-header {
  padding: 60px 24px 40px;
  text-align: center;
  position: relative;
}

.page-header-content {
  max-width: 600px;
  margin: 0 auto;
}

.page-icon {
  width: 80px;
  height: 80px;
  border-radius: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  font-size: 32px;
  color: white;
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-spring);
  position: relative;
  overflow: hidden;
}

.page-icon::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.3), transparent);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.page-header:hover .page-icon {
  transform: scale(1.05) rotate(5deg);
}

.page-header:hover .page-icon::before {
  opacity: 1;
}

#picture-page .page-icon { 
  background: var(--picture-gradient);
  box-shadow: 0 8px 32px rgba(26, 115, 232, 0.4);
}
#video-page .page-icon { 
  background: var(--video-gradient);
  box-shadow: 0 8px 32px rgba(217, 48, 37, 0.4);
}
#file-page .page-icon { 
  background: var(--file-gradient);
  box-shadow: 0 8px 32px rgba(249, 171, 0, 0.4);
  color: #1F2937;
}
#app-page .page-icon { 
  background: var(--app-gradient);
  box-shadow: 0 8px 32px rgba(24, 128, 56, 0.4);
}
#for-page .page-icon { 
  background: var(--for-gradient);
  box-shadow: 0 8px 32px rgba(124, 58, 237, 0.4);
}

.page-title {
  font-size: 42px;
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -1px;
  transition: all var(--transition-fast);
}

#picture-page .page-title { color: var(--picture-primary); }
#video-page .page-title { color: var(--video-primary); }
#file-page .page-title { color: var(--file-primary); }
#app-page .page-title { color: var(--app-primary); }
#for-page .page-title { color: var(--for-primary); }

.page-subtitle {
  color: var(--text-secondary);
  font-size: 18px;
  transition: all var(--transition-fast);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px 80px;
}

.version-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
  margin-top: 40px;
  align-items: stretch;
}

.version-card {
  padding: 32px;
  border-radius: 24px;
  position: relative;
  transition: all var(--transition-spring);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.version-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--card-bg), rgba(255,255,255,0.3));
  border-radius: 24px;
  z-index: 0;
  transition: all var(--transition-base);
}

[data-theme="dark"] .version-card::before {
  background: linear-gradient(135deg, var(--card-bg), rgba(255,255,255,0.05));
}

.version-card:hover {
  transform: translateY(-6px) scale(1.01);
}

.version-card.picture::before {
  border: 1px solid rgba(26, 115, 232, 0.25);
  box-shadow: 0 4px 20px rgba(26, 115, 232, 0.12);
}
.version-card.video::before {
  border: 1px solid rgba(217, 48, 37, 0.25);
  box-shadow: 0 4px 20px rgba(217, 48, 37, 0.12);
}
.version-card.file::before {
  border: 1px solid rgba(249, 171, 0, 0.25);
  box-shadow: 0 4px 20px rgba(249, 171, 0, 0.12);
}
.version-card.app::before {
  border: 1px solid rgba(24, 128, 56, 0.25);
  box-shadow: 0 4px 20px rgba(24, 128, 56, 0.12);
}
.version-card.for::before {
  border: 1px solid rgba(124, 58, 237, 0.25);
  box-shadow: 0 4px 20px rgba(124, 58, 237, 0.12);
}

.version-card.picture:hover::before {
  box-shadow: var(--shadow-picture);
  border-color: rgba(26, 115, 232, 0.4);
}
.version-card.video:hover::before {
  box-shadow: var(--shadow-video);
  border-color: rgba(217, 48, 37, 0.4);
}
.version-card.file:hover::before {
  box-shadow: var(--shadow-file);
  border-color: rgba(249, 171, 0, 0.4);
}
.version-card.app:hover::before {
  box-shadow: var(--shadow-app);
  border-color: rgba(24, 128, 56, 0.4);
}

.version-badge {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 700;
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 1px;
  align-self: flex-start;
  position: relative;
  z-index: 1;
}

.version-card.picture .version-badge { 
  background: var(--picture-light); 
  color: var(--picture-primary); 
}
.version-card.video .version-badge { 
  background: var(--video-light); 
  color: var(--video-primary); 
}
.version-card.file .version-badge { 
  background: var(--file-light); 
  color: var(--file-primary); 
}
.version-card.app .version-badge { 
  background: var(--app-light); 
  color: var(--app-primary); 
}
.version-card.for .version-badge { 
  background: var(--for-light); 
  color: var(--for-primary); 
}

.version-title {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}

.version-desc {
  color: var(--text-secondary);
  margin-bottom: 20px;
  line-height: 1.6;
  flex-grow: 1;
  position: relative;
  z-index: 1;
}

.version-limit {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 16px;
  padding: 12px;
  background: rgba(0, 0, 0, 0.04);
  border-radius: 12px;
  position: relative;
  z-index: 1;
  transition: all var(--transition-fast);
}

.version-card:hover .version-limit {
  background: rgba(0, 0, 0, 0.06);
  transform: translateX(4px);
}

[data-theme="dark"] .version-limit {
  background: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .version-card:hover .version-limit {
  background: rgba(255, 255, 255, 0.12);
}

.version-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
  position: relative;
  z-index: 1;
}

.version-tag {
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
  transition: all var(--transition-fast);
}

.version-tag:hover {
  transform: translateY(-2px);
}

.version-card.picture .version-tag { 
  background: var(--picture-light); 
  color: var(--picture-primary); 
}
.version-card.video .version-tag { 
  background: var(--video-light); 
  color: var(--video-primary); 
}
.version-card.file .version-tag { 
  background: var(--file-light); 
  color: var(--file-primary); 
}
.version-card.app .version-tag { 
  background: var(--app-light); 
  color: var(--app-primary); 
}
.version-card.for .version-tag { 
  background: var(--for-light); 
  color: var(--for-primary); 
}

.version-btn {
  width: 100%;
  padding: 14px;
  border: none;
  border-radius: 12px;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: all var(--transition-fast);
  color: white;
  margin-top: auto;
  position: relative;
  z-index: 1;
  overflow: hidden;
}

.version-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transition: left 0.5s;
}

.version-btn:hover::before {
  left: 100%;
}

.version-card.picture .version-btn { 
  background: var(--picture-primary); 
  box-shadow: 0 4px 14px rgba(26, 115, 232, 0.35);
}
.version-card.video .version-btn { 
  background: var(--video-primary); 
  box-shadow: 0 4px 14px rgba(217, 48, 37, 0.35);
}
.version-card.file .version-btn { 
  background: var(--file-primary); 
  color: #1F2937;
  box-shadow: 0 4px 14px rgba(249, 171, 0, 0.35);
}
.version-card.app .version-btn { 
  background: var(--app-primary); 
  box-shadow: 0 4px 14px rgba(24, 128, 56, 0.35);
}
.version-card.for .version-btn { 
  background: var(--for-primary); 
  box-shadow: 0 4px 14px rgba(124, 58, 237, 0.35);
}

.version-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.25);
}

.version-btn:active {
  transform: translateY(0) scale(0.98);
}

.coming-soon {
  opacity: 0.6;
  cursor: not-allowed;
}

.coming-soon:hover {
  transform: none;
  box-shadow: 0 4px 14px rgba(0,0,0,0.1);
}

/* About Page */
.about-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 40px 24px;
}

.about-section {
  margin-bottom: 64px;
  opacity: 0;
  transform: translateY(20px);
}

.about-section.visible {
  animation: fadeInUp 0.6s var(--ease-out-expo) forwards;
}

.about-title {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.about-title::before {
  content: '';
  width: 4px;
  height: 32px;
  background: var(--picture-primary);
  border-radius: 2px;
}

.about-text {
  color: var(--text-secondary);
  font-size: 17px;
  line-height: 1.8;
  margin-bottom: 16px;
}

.about-text strong {
  color: var(--text);
  font-weight: 600;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 32px;
}

.contact-card {
  padding: 24px;
  border-radius: 20px;
  text-align: center;
  transition: all var(--transition-spring);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.contact-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent, rgba(255,255,255,0.3));
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.contact-card:hover::before {
  opacity: 1;
}

.contact-card:hover {
  transform: translateY(-6px) scale(1.02);
}

.contact-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 24px;
  color: white;
  position: relative;
  z-index: 1;
  transition: all var(--transition-spring);
}

.contact-card:hover .contact-icon {
  transform: scale(1.1) rotate(-5deg);
}

.contact-card.qq .contact-icon { 
  background: linear-gradient(135deg, #12B7F5, #0ea5e9);
  box-shadow: 0 8px 24px rgba(18, 183, 245, 0.35);
}
.contact-card.wechat .contact-icon { 
  background: linear-gradient(135deg, #07C160, #059669);
  box-shadow: 0 8px 24px rgba(7, 193, 96, 0.35);
}
.contact-card.support .contact-icon { 
  background: linear-gradient(135deg, #F59E0B, #d97706);
  box-shadow: 0 8px 24px rgba(245, 158, 11, 0.35);
}

.contact-card h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 4px;
  position: relative;
  z-index: 1;
}

.contact-card p {
  font-size: 14px;
  color: var(--text-secondary);
  position: relative;
  z-index: 1;
}

/* About Page Logo Styles - Self-drawn Link Text */
.about-logo-container {
  width: 120px;
  height: 120px;
  border-radius: 32px;
  background: white;
  margin: 0 auto 24px;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  transition: all var(--transition-spring);
}

.about-logo-container:hover {
  transform: scale(1.05) rotate(3deg);
  box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

@media (max-width: 768px) {
  .about-logo-container {
    width: 100px;
    height: 100px;
    border-radius: 28px;
  }
}

@media (max-width: 480px) {
  .about-logo-container {
    width: 80px;
    height: 80px;
    border-radius: 24px;
  }
}

.about-logo-text {
  font-size: 48px;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -2px;
  display: flex;
}

.about-logo-text .letter-l { color: var(--picture-primary); }
.about-logo-text .letter-i { color: var(--video-primary); }
.about-logo-text .letter-n { color: var(--file-primary); }
.about-logo-text .letter-k { color: var(--app-primary); }

@media (max-width: 768px) {
  .about-logo-text {
    font-size: 40px;
    letter-spacing: -2px;
  }
}

@media (max-width: 480px) {
  .about-logo-text {
    font-size: 32px;
    letter-spacing: -1px;
  }
}

/* Footer */
footer {
  text-align: center;
  padding: 40px 24px;
  color: var(--text-tertiary);
  font-size: 14px;
}

.footer-brand {
  font-weight: 700;
  background: linear-gradient(135deg, #4285F4 0%, #EA4335 33%, #FBBC05 66%, #34A853 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* Animations */
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Magnetic Button Effect */
.magnetic {
  transition: transform 0.3s var(--ease-out-expo);
}

/* Subtle Float Animation */
@keyframes subtleFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-5px); }
}

.float-animation {
  animation: subtleFloat 3s ease-in-out infinite;
}

/* Glow Effect on Hover */
.glow-hover {
  transition: all var(--transition-fast);
}

.glow-hover:hover {
  filter: brightness(1.1);
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .hero-title {
    font-size: 56px;
  }

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

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

  .navbar {
    width: calc(100% - 24px);
    top: 12px;
  }

  .nav-container {
    padding: 0 16px;
  }

  /* Mobile Announcement Modal */
  .announcement-modal {
    max-height: 85vh;
    border-radius: 24px;
  }

  .announcement-header {
    padding: 24px 24px 0;
  }

  .announcement-icon {
    width: 60px;
    height: 60px;
    border-radius: 20px;
  }

  .announcement-icon i {
    font-size: 26px;
  }

  .announcement-title {
    font-size: 20px;
  }

  .announcement-content {
    padding: 20px 24px 24px;
  }

  .announcement-text {
    font-size: 14px;
  }

  .announcement-actions {
    padding: 0 24px 24px;
    flex-direction: column;
  }

  .announcement-btn-primary,
  .announcement-btn-secondary {
    width: 100%;
    justify-content: center;
  }

  .announcement-float-btn {
    width: 50px;
    height: 50px;
    border-radius: 16px;
    bottom: 20px;
    right: 20px;
  }

  .announcement-float-btn i {
    font-size: 20px;
  }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}