/* ============================================
   全新现代化科技感样式表 v3.0
   ============================================ */

/* CSS Variables */
:root {
  /* Colors */
  --primary-color: #00d4ff;
  --secondary-color: #00ff88;
  --accent-color: #7b2ff7;
  --accent-purple: #a855f7;
  --bg-dark: #0a0e27;
  --bg-darker: #050714;
  --bg-darkest: #020408;
  --bg-card: rgba(255, 255, 255, 0.05);
  --bg-card-hover: rgba(255, 255, 255, 0.08);
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.75);
  --text-muted: rgba(255, 255, 255, 0.5);
  --border-color: rgba(255, 255, 255, 0.1);
  --border-color-hover: rgba(0, 212, 255, 0.5);
  
  /* Shadows */
  --shadow-glow: 0 0 40px rgba(0, 212, 255, 0.4);
  --shadow-glow-green: 0 0 40px rgba(0, 255, 136, 0.4);
  --shadow-glow-purple: 0 0 40px rgba(168, 85, 247, 0.4);
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-hover: 0 15px 50px rgba(0, 212, 255, 0.5);
  --shadow-strong: 0 20px 60px rgba(0, 0, 0, 0.6);
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #00d4ff 0%, #00ff88 100%);
  --gradient-secondary: linear-gradient(135deg, #7b2ff7 0%, #00d4ff 100%);
  --gradient-dark: linear-gradient(135deg, #0a0e27 0%, #050714 100%);
  --gradient-text: linear-gradient(135deg, #00d4ff 0%, #00ff88 50%, #7b2ff7 100%);
  
  /* Spacing System */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;
  
  /* Typography */
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --font-size-5xl: 3.5rem;
  --font-size-6xl: 4.5rem;
  
  /* Layout */
  --container-max-width: 1400px;
  --container-padding: 2rem;
  --section-padding: 8rem 2rem;
  --border-radius-sm: 12px;
  --border-radius-md: 20px;
  --border-radius-lg: 30px;
  --border-radius-xl: 40px;
  --border-radius-full: 50px;
  
  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Breakpoints */
  --breakpoint-sm: 640px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1024px;
  --breakpoint-xl: 1280px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-darkest);
  color: var(--text-primary);
  overflow-x: hidden;
  line-height: 1.6;
  position: relative;
}

/* 确保section默认可见，但不强制子元素 */
section {
  opacity: 1;
}

/* Animated Background */
.animated-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

#particle-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

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

.orb-1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--primary-color) 0%, transparent 70%);
  top: 10%;
  left: 10%;
  animation-duration: 25s;
}

.orb-2 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, var(--secondary-color) 0%, transparent 70%);
  bottom: 20%;
  right: 15%;
  animation-duration: 30s;
  animation-delay: -5s;
}

.orb-3 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, var(--accent-purple) 0%, transparent 70%);
  top: 50%;
  left: 50%;
  animation-duration: 35s;
  animation-delay: -10s;
}

@keyframes floatOrb {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(50px, -50px) scale(1.1); }
  66% { transform: translate(-30px, 30px) scale(0.9); }
}

/* Navigation */
.modern-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 1.5rem 0;
  background: rgba(10, 14, 39, 0.7);
  backdrop-filter: blur(30px) saturate(180%);
  border-bottom: 1px solid var(--border-color);
  transition: all var(--transition-base);
}

.modern-nav.scrolled {
  padding: 1rem 0;
  background: rgba(10, 14, 39, 0.95);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
}

.nav-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 1rem;
  position: relative;
}

.logo-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.logo-wrapper img {
  height: 3rem;
  width: auto;
  position: relative;
  z-index: 2;
  transition: transform var(--transition-base);
}

.logo-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 4rem;
  height: 4rem;
  background: radial-gradient(circle, var(--primary-color) 0%, transparent 70%);
  filter: blur(15px);
  opacity: 0;
  transition: opacity var(--transition-base);
  z-index: 1;
}

.logo-wrapper:hover .logo-glow {
  opacity: 0.6;
}

.logo-wrapper:hover img {
  transform: scale(1.1);
}

.logo-text {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.25rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 2.5rem;
  align-items: center;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  transition: color var(--transition-base);
  padding: 0.5rem 0;
}

.nav-link-text {
  position: relative;
  z-index: 2;
}

.nav-link-underline {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width var(--transition-base);
  z-index: 1;
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
}

.nav-link:hover .nav-link-underline,
.nav-link.active .nav-link-underline {
  width: 100%;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  z-index: 1001;
}

.nav-toggle span {
  width: 25px;
  height: 2px;
  background: var(--text-primary);
  transition: all var(--transition-base);
}

/* Hero Section */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding: calc(100px + var(--spacing-2xl)) var(--container-padding) var(--spacing-2xl);
  overflow: hidden;
  z-index: 1;
  background: rgba(5, 7, 20, 0.2);
  backdrop-filter: blur(1px);
}

.hero-background-pattern {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    radial-gradient(circle at 20% 50%, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(0, 255, 136, 0.1) 0%, transparent 50%);
  opacity: 0.5;
  z-index: 0;
}

.hero-content {
  max-width: var(--container-max-width);
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-text {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: var(--spacing-xs) var(--spacing-md);
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid rgba(0, 212, 255, 0.3);
  border-radius: var(--border-radius-full);
  max-width: fit-content;
  backdrop-filter: blur(10px);
  animation: fadeInUp 0.6s ease-out;
}

.badge-icon {
  font-size: 1.2rem;
}

.badge-text {
  font-size: clamp(0.75rem, 1.5vw, 0.9rem);
  color: var(--primary-color);
  font-weight: 600;
  letter-spacing: 0.5px;
}

.hero-title {
  font-family: 'Orbitron', sans-serif;
  font-size: clamp(2.5rem, 7vw + 1rem, 6rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.03em;
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

.title-line {
  display: block;
}

.title-line.highlight {
  position: relative;
  display: inline-block;
}

.gradient-text {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  background-size: 200% 200%;
  animation: gradientShift 3s ease infinite;
}

@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.title-shine {
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  animation: shine 3s infinite;
}

@keyframes shine {
  0% { left: -100%; }
  100% { left: 100%; }
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw + 0.5rem, 1.35rem);
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 90%;
  animation: fadeInUp 1s ease-out 0.4s both;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  animation: fadeInUp 1s ease-out 0.6s both;
}

.btn-primary,
.btn-secondary {
  position: relative;
  padding: var(--spacing-sm) var(--spacing-xl);
  border-radius: var(--border-radius-full);
  text-decoration: none;
  font-weight: 600;
  font-size: var(--font-size-base);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  transition: all var(--transition-base);
  border: 2px solid transparent;
  white-space: nowrap;
  cursor: pointer;
  overflow: hidden;
}

.btn-ripple {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn-primary:active .btn-ripple,
.btn-secondary:active .btn-ripple {
  width: 300px;
  height: 300px;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--bg-dark);
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border-color);
}

.btn-secondary:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
}

.btn-primary.large {
  padding: 1.25rem var(--spacing-xl);
  font-size: var(--font-size-lg);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
  margin-top: var(--spacing-md);
  animation: fadeInUp 1.2s ease-out 0.8s both;
}

.stat-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  transition: all var(--transition-base);
}

.stat-item:hover {
  transform: translateY(-5px);
  border-color: var(--primary-color);
  box-shadow: var(--shadow-glow);
}

.stat-icon {
  font-size: 2rem;
}

.stat-number {
  font-family: 'Orbitron', sans-serif;
  font-size: 2.5rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

/* Hero Visual */
.hero-visual {
  position: relative;
  height: clamp(500px, 60vh, 700px);
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.visual-container {
  position: relative;
  width: 100%;
  height: 100%;
}

.floating-card {
  position: absolute;
  padding: var(--spacing-md);
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
  box-shadow: var(--shadow-card);
  z-index: 3;
  transition: all var(--transition-base);
  overflow: hidden;
}

.floating-card::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.1) 0%, transparent 70%);
  opacity: 0;
  transition: opacity var(--transition-slow);
}

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

.floating-card:hover {
  transform: translateY(-10px) scale(1.05);
  border-color: var(--primary-color);
  box-shadow: var(--shadow-glow);
}

.card-glow-effect {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-base);
  z-index: -1;
  filter: blur(20px);
}

.floating-card:hover .card-glow-effect {
  opacity: 0.3;
}

.card-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
  position: relative;
  z-index: 2;
}

.card-icon {
  font-size: 2.5rem;
}

.card-text {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
}

.card-title {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--primary-color);
}

.card-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.floating-card.card-1 {
  top: -5%;
  right: -5%;
  animation: floatCard 4s ease-in-out infinite;
}

.floating-card.card-2 {
  bottom: 35%;
  right: -8%;
  animation: floatCard 5s ease-in-out infinite 0.5s;
}

.floating-card.card-3 {
  top: 70%;
  right: -5%;
  animation: floatCard 4.5s ease-in-out infinite 1s;
}

@keyframes floatCard {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(3deg); }
}

.hero-image-wrapper {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
}

.image-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 120%;
  height: 120%;
  background: radial-gradient(ellipse, rgba(0, 212, 255, 0.3) 0%, transparent 70%);
  filter: blur(40px);
  animation: pulseGlow 3s ease-in-out infinite;
  z-index: 0;
}

@keyframes pulseGlow {
  0%, 100% { opacity: 0.5; transform: translate(-50%, -50%) scale(1); }
  50% { opacity: 0.8; transform: translate(-50%, -50%) scale(1.1); }
}

.hero-image {
  max-width: 100%;
  width: auto;
  height: auto;
  max-height: clamp(400px, 60vh, 700px);
  object-fit: contain;
  filter: drop-shadow(0 0 60px rgba(0, 212, 255, 0.6));
  animation: float 6s ease-in-out infinite;
  transition: transform var(--transition-base);
  position: relative;
  z-index: 2;
  cursor: pointer;
}

.hero-image:hover {
  transform: scale(1.05);
  filter: drop-shadow(0 0 80px rgba(0, 212, 255, 0.8));
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-25px); }
}

.image-particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.image-particles span {
  position: absolute;
  width: 4px;
  height: 4px;
  background: var(--primary-color);
  border-radius: 50%;
  animation: particleFloat 8s infinite;
  opacity: 0.6;
}

.image-particles span:nth-child(1) { top: 20%; left: 10%; animation-delay: 0s; }
.image-particles span:nth-child(2) { top: 40%; left: 80%; animation-delay: 1s; }
.image-particles span:nth-child(3) { top: 70%; left: 20%; animation-delay: 2s; }
.image-particles span:nth-child(4) { top: 30%; left: 70%; animation-delay: 3s; }
.image-particles span:nth-child(5) { top: 80%; left: 60%; animation-delay: 4s; }

@keyframes particleFloat {
  0%, 100% { transform: translate(0, 0) scale(1); opacity: 0.6; }
  50% { transform: translate(30px, -30px) scale(1.5); opacity: 1; }
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: 3rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  z-index: 1;
  animation: fadeInUp 1.5s ease-out 1s both;
}

.mouse {
  width: 30px;
  height: 50px;
  border: 2px solid var(--text-muted);
  border-radius: 20px;
  position: relative;
}

.wheel {
  width: 4px;
  height: 10px;
  background: var(--primary-color);
  border-radius: 2px;
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  animation: scroll 2s infinite;
}

@keyframes scroll {
  0% { opacity: 1; transform: translateX(-50%) translateY(0); }
  100% { opacity: 0; transform: translateX(-50%) translateY(20px); }
}

.scroll-text {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  letter-spacing: 2px;
}

/* Section Styles */
section {
  position: relative;
  padding: var(--section-padding);
  z-index: 1;
}

.section-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(ellipse at center, rgba(0, 212, 255, 0.08) 0%, transparent 70%);
  z-index: 0;
  pointer-events: none;
  opacity: 0.6;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1.5rem;
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid rgba(0, 212, 255, 0.3);
  border-radius: var(--border-radius-full);
  color: var(--primary-color);
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  backdrop-filter: blur(10px);
}

.tag-icon {
  font-size: 1.1rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  vertical-align: middle;
}

.tag-icon svg {
  width: 1.1rem;
  height: 1.1rem;
  display: block;
}

.section-title {
  font-family: 'Orbitron', sans-serif;
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  margin-bottom: 1.5rem;
  line-height: 1.2;
}

.title-prefix {
  color: var(--text-primary);
}

.title-main {
  display: inline-block;
}

.section-description {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 800px;
  margin: 0 auto;
}

/* About Section */
.about-section {
  background: rgba(10, 14, 39, 0.3);
  backdrop-filter: blur(1px);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: start;
}

.about-text {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
}

.text-block {
  padding: var(--spacing-lg);
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  transition: all var(--transition-base);
}

.text-block:hover {
  transform: translateX(10px);
  border-color: var(--primary-color);
  box-shadow: var(--shadow-glow);
}

.block-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.block-icon {
  font-size: 2rem;
}

.text-block h3 {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.5rem;
  color: var(--primary-color);
}

.text-block p {
  color: var(--text-secondary);
  line-height: 1.8;
  font-size: 1.05rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-md);
}

.feature-item {
  padding: var(--spacing-lg);
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  text-align: center;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.feature-item::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.1) 0%, transparent 70%);
  opacity: 0;
  transition: opacity var(--transition-slow);
}

.feature-item:hover::before {
  opacity: 1;
}

.feature-item:hover {
  transform: translateY(-10px);
  border-color: var(--primary-color);
  box-shadow: var(--shadow-glow);
}

.feature-icon-wrapper {
  position: relative;
  display: inline-block;
  margin-bottom: var(--spacing-md);
}

.feature-icon {
  font-size: 3rem;
  position: relative;
  z-index: 2;
}

.feature-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80px;
  height: 80px;
  background: radial-gradient(circle, var(--primary-color) 0%, transparent 70%);
  filter: blur(20px);
  opacity: 0;
  transition: opacity var(--transition-base);
  z-index: 1;
}

.feature-item:hover .feature-glow {
  opacity: 0.5;
}

.feature-item h4 {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.feature-item p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.about-image {
  position: relative;
  display: flex;
  gap: 4rem;
  flex-wrap: wrap;
}

.about-image .image-wrapper {
  flex: 1;
  min-width: 280px;
}

.image-wrapper {
  position: relative;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-strong);
}

.image-wrapper img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform var(--transition-slow);
}


.image-wrapper:hover img {
  transform: scale(1.05);
}

.image-overlay-gradient {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.1) 0%, rgba(0, 255, 136, 0.1) 100%);
  pointer-events: none;
  z-index: 1;
}

.image-border-glow {
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: var(--gradient-primary);
  border-radius: var(--border-radius-lg);
  opacity: 0;
  transition: opacity var(--transition-base);
  z-index: -1;
  filter: blur(10px);
}

.image-wrapper:hover .image-border-glow {
  opacity: 0.6;
}

/* Products Section */
.products-section {
  background: rgba(5, 7, 20, 0.3);
  backdrop-filter: blur(1px);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 400px), 1fr));
  gap: var(--spacing-xl);
  width: 100%;
}

.product-card {
  position: relative;
  padding: var(--spacing-xl);
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  transition: all var(--transition-slow);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.card-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at top right, rgba(0, 212, 255, 0.1) 0%, transparent 70%);
  opacity: 0;
  transition: opacity var(--transition-slow);
}

.product-card:hover .card-background {
  opacity: 1;
}

.card-glow {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-slow);
  border-radius: var(--border-radius-lg);
  z-index: -1;
  filter: blur(30px);
}

.product-card:hover .card-glow {
  opacity: 0.3;
}

.product-card:hover {
  transform: translateY(-15px);
  border-color: var(--primary-color);
  box-shadow: var(--shadow-hover);
}

.product-icon {
  width: 100px;
  height: 100px;
  margin-bottom: var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.product-icon img {
  width: 100%;
  height: auto;
  filter: drop-shadow(0 0 20px rgba(0, 212, 255, 0.5));
  transition: transform var(--transition-base);
  position: relative;
  z-index: 2;
}

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

.icon-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 120px;
  height: 120px;
  background: radial-gradient(circle, var(--primary-color) 0%, transparent 70%);
  filter: blur(25px);
  opacity: 0;
  transition: opacity var(--transition-base);
  z-index: 1;
}

.product-card:hover .icon-glow {
  opacity: 0.6;
}

.product-content {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.product-card h3 {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.75rem;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.product-card p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: var(--spacing-lg);
  flex: 1;
}

.product-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  transition: all var(--transition-base);
  margin-top: auto;
}

.product-link:hover {
  gap: 1rem;
  color: var(--secondary-color);
}

/* Cases Section */
.cases-section {
  background: rgba(10, 14, 39, 0.3);
  backdrop-filter: blur(1px);
}

.cases-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.case-image .image-wrapper {
  position: relative;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-strong);
}

.case-image img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform var(--transition-slow);
}

.case-image:hover img {
  transform: scale(1.05);
}

.cases-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.case-item {
  display: flex;
  gap: var(--spacing-lg);
  padding: var(--spacing-lg);
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.case-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 4px;
  height: 100%;
  background: var(--gradient-primary);
  transform: scaleY(0);
  transition: transform var(--transition-base);
}

.case-item:hover::before {
  transform: scaleY(1);
}

.case-item:hover {
  transform: translateX(15px);
  border-color: var(--primary-color);
  box-shadow: var(--shadow-glow);
}

.case-number-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 80px;
}

.case-number {
  font-family: 'Orbitron', sans-serif;
  font-size: 3rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  position: relative;
  z-index: 2;
}

.number-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100px;
  height: 100px;
  background: radial-gradient(circle, var(--primary-color) 0%, transparent 70%);
  filter: blur(20px);
  opacity: 0;
  transition: opacity var(--transition-base);
  z-index: 1;
}

.case-item:hover .number-glow {
  opacity: 0.5;
}

.case-content h4 {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.4rem;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.case-content p {
  color: var(--text-secondary);
  line-height: 1.8;
}

.case-content .play-icon {
  display: inline-block;
  margin-left: 0.5rem;
  font-size: 0.8em;
  color: var(--primary-color);
  opacity: 0.7;
  transition: all var(--transition-base);
}

#communityParkingCase:hover .play-icon {
  opacity: 1;
  transform: scale(1.2);
}

/* Contact Section */
.contact-section {
  background: rgba(5, 7, 20, 0.3);
  backdrop-filter: blur(1px);
}

.contact-content {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}

.contact-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
  width: 100%;
}

.info-item {
  padding: var(--spacing-xl);
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  transition: all var(--transition-base);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.info-item::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.1) 0%, transparent 70%);
  opacity: 0;
  transition: opacity var(--transition-slow);
}

.info-item:hover::before {
  opacity: 1;
}

.info-item:hover {
  transform: translateY(-10px);
  border-color: var(--primary-color);
  box-shadow: var(--shadow-glow);
}

.info-icon-wrapper {
  position: relative;
  display: inline-block;
  margin-bottom: var(--spacing-md);
}

.info-icon {
  font-size: 3rem;
  position: relative;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.info-icon svg {
  width: 3rem;
  height: 3rem;
  display: block;
}

.info-icon-wrapper .icon-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100px;
  height: 100px;
  background: radial-gradient(circle, var(--primary-color) 0%, transparent 70%);
  filter: blur(25px);
  opacity: 0;
  transition: opacity var(--transition-base);
  z-index: 1;
}

.info-item:hover .icon-glow {
  opacity: 0.6;
}

.info-content h4 {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.3rem;
  margin-bottom: 0.75rem;
  color: var(--primary-color);
}

.info-content p {
  color: var(--text-secondary);
  line-height: 1.8;
  word-break: break-word;
}

.contact-cta {
  margin-top: var(--spacing-2xl);
}

/* Footer */
.modern-footer {
  background: rgba(2, 4, 8, 0.4);
  backdrop-filter: blur(1px);
  border-top: 1px solid var(--border-color);
  padding: 4rem 2rem 2rem;
  position: relative;
}

.footer-content {
  max-width: var(--container-max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 3fr;
  gap: var(--spacing-3xl);
  margin-bottom: var(--spacing-xl);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.footer-logo img {
  height: 3rem;
  margin-bottom: var(--spacing-md);
}

.footer-brand p {
  color: var(--text-secondary);
  line-height: 1.8;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 200px), 1fr));
  gap: var(--spacing-lg);
}

.link-group h4 {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.1rem;
  margin-bottom: var(--spacing-md);
  color: var(--primary-color);
}

.link-group ul {
  list-style: none;
}

.link-group ul li {
  margin-bottom: 0.75rem;
}

.link-group ul li a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-base);
}

.link-group ul li a:hover {
  color: var(--primary-color);
}

.footer-bottom {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--border-color);
  text-align: center;
  color: var(--text-muted);
  font-size: var(--font-size-sm);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.footer-bottom a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition-base);
}

.footer-bottom a:hover {
  color: var(--primary-color);
}

/* 底部入口按钮组 */
.bottom-entries {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  animation: fadeInUp 0.8s ease-out 0.5s both;
}

.entry-button {
  animation: fadeInUp 0.8s ease-out calc(0.5s + var(--delay, 0s)) both;
}

.entry-button:nth-child(1) {
  --delay: 0.1s;
}

.entry-button:nth-child(2) {
  --delay: 0.2s;
}

.entry-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.5rem;
  background: rgba(0, 212, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(0, 212, 255, 0.3);
  border-radius: 50px;
  color: var(--primary-color);
  text-decoration: none;
  font-family: 'Orbitron', sans-serif;
  font-size: 0.95rem;
  font-weight: 600;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 212, 255, 0.2);
}

.digital-human-entry .entry-link {
  overflow: visible;
}

.entry-link:hover {
  background: rgba(0, 212, 255, 0.2);
  border-color: var(--primary-color);
  box-shadow: 0 6px 30px rgba(0, 212, 255, 0.4);
  transform: translateY(-2px);
}

.entry-icon {
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  background: rgba(0, 212, 255, 0.2);
  border-radius: 50%;
  transition: transform 0.3s ease;
}

.entry-link:hover .entry-icon {
  transform: rotate(90deg);
}

.entry-text {
  position: relative;
  z-index: 2;
}

.entry-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, var(--primary-color) 0%, transparent 70%);
  filter: blur(20px);
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 1;
}

.entry-link:hover .entry-glow {
  opacity: 0.4;
}

/* 摩若数字人预览图片 */
.digital-human-preview {
  position: absolute;
  bottom: calc(100% + 1rem);
  right: 0;
  width: 300px;
  height: auto;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px) scale(0.9);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
  z-index: 1001;
  filter: drop-shadow(0 10px 30px rgba(0, 212, 255, 0.3));
}

.digital-human-preview::before {
  content: '';
  position: absolute;
  bottom: -8px;
  right: 2rem;
  width: 0;
  height: 0;
  border-left: 10px solid transparent;
  border-right: 10px solid transparent;
  border-top: 10px solid rgba(0, 212, 255, 0.95);
  filter: drop-shadow(0 2px 5px rgba(0, 0, 0, 0.2));
}

.digital-human-preview img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 12px;
  background: rgba(0, 212, 255, 0.95);
  backdrop-filter: blur(10px);
  border: 2px solid rgba(0, 212, 255, 0.5);
  padding: 8px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.digital-human-entry .entry-link:hover .digital-human-preview {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

@media (max-width: 768px) {
  .bottom-entries {
    bottom: 1.5rem;
    right: 1.5rem;
    gap: 0.75rem;
  }
  
  .entry-link {
    padding: 0.75rem 1.25rem;
    font-size: 0.85rem;
  }
  
  .entry-icon {
    width: 1.75rem;
    height: 1.75rem;
    font-size: 1rem;
  }
  
  .digital-human-preview {
    width: 250px;
    right: -50px;
  }
  
  .digital-human-preview::before {
    right: 3rem;
  }
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-up {
  animation: fadeInUp 0.8s ease-out forwards; /* forwards确保动画完成后保持最终状态 */
  opacity: 1;
}

/* Utility Classes */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  width: 100%;
}

/* Responsive Design */
@media (max-width: 1024px) {
  :root {
    --container-padding: 1.5rem;
    --section-padding: 6rem 1.5rem;
  }
  
  .hero-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
    text-align: center;
  }
  
  .hero-subtitle {
    max-width: 100%;
  }
  
  .about-content,
  .cases-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
  
  .about-image,
  .case-image {
    order: -1;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --container-padding: 1rem;
    --section-padding: 4rem 1rem;
  }
  
  .nav-menu {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background: rgba(10, 14, 39, 0.98);
    flex-direction: column;
    padding: var(--spacing-lg);
    transition: left var(--transition-base);
    backdrop-filter: blur(30px);
    z-index: 999;
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .nav-toggle {
    display: flex;
  }
  
  .nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
  }
  
  .nav-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  
  .nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
  }
  
  .logo-text {
    font-size: var(--font-size-base);
  }
  
  .nav-logo img {
    height: 2.5rem;
  }
  
  .hero-buttons {
    width: 100%;
  }
  
  .btn-primary,
  .btn-secondary {
    width: 100%;
    justify-content: center;
  }
  
  .hero-stats {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .stat-item {
    flex-direction: column;
    text-align: center;
  }
  
  .floating-card {
    display: none;
  }
  
  .hero-visual {
    height: 400px;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .case-item {
    flex-direction: column;
    text-align: center;
  }
  
  .case-item:hover {
    transform: translateY(-5px);
  }
  
  .case-number-wrapper {
    min-width: auto;
  }
  
  .products-grid {
    grid-template-columns: 1fr;
  }
  
  .contact-info {
    grid-template-columns: 1fr;
  }
  
  .info-icon svg {
    width: 2.5rem;
    height: 2.5rem;
  }
  
  .footer-links {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2.5rem;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .stat-number {
    font-size: 2rem;
  }
}

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

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 4px;
  border-radius: 4px;
}

/* Performance Optimization */
.hero-image,
.floating-card,
.product-card,
.feature-item,
.case-item {
  will-change: transform;
  transform: translateZ(0);
}

/* 3D Model Modal Styles */
.model3d-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.model3d-modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(5, 7, 20, 0.95);
  backdrop-filter: blur(10px);
}

.model3d-modal-content {
  position: relative;
  width: 90%;
  height: 90%;
  max-width: 1400px;
  max-height: 900px;
  background: rgba(10, 14, 39, 0.9);
  border: 1px solid rgba(0, 212, 255, 0.3);
  border-radius: 20px;
  box-shadow: 0 0 50px rgba(0, 212, 255, 0.5);
  overflow: hidden;
  animation: modalFadeIn 0.3s ease-out;
}

@keyframes modalFadeIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.model3d-close-btn {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  color: var(--text-primary);
  font-size: 24px;
  cursor: pointer;
  z-index: 10001;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}

.model3d-close-btn:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: var(--primary-color);
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.5);
  transform: rotate(90deg);
}

.model3d-container {
  width: 100%;
  height: 100%;
  position: relative;
}

.model3d-container canvas {
  display: block;
  width: 100% !important;
  height: 100% !important;
}

.video-container {
  width: 100%;
  height: 100%;
  position: relative;
}

.video-container iframe {
  display: block;
  width: 100% !important;
  height: 100% !important;
}

.contact-image-container {
  width: 100%;
  height: 100%;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  box-sizing: border-box;
}

.contact-image-container img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: 10px;
  box-shadow: 0 0 30px rgba(0, 212, 255, 0.3);
}

/* Patent Gallery Styles */
.patent-gallery-content {
  display: flex;
  flex-direction: column;
  padding: 0;
  overflow: hidden;
}

.patent-gallery-header {
  padding: 30px 40px 20px;
  text-align: center;
  border-bottom: 1px solid rgba(0, 212, 255, 0.2);
  flex-shrink: 0;
}

.patent-gallery-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 10px;
  background: linear-gradient(135deg, #00d4ff, #ffffff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.patent-gallery-subtitle {
  font-size: 16px;
  color: var(--text-secondary);
  margin: 0;
}

.patent-images-grid {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 30px;
  row-gap: 115px;
  padding: 30px 40px;
  overflow-y: auto;
  overflow-x: hidden;
  align-items: start;
}

.patent-image-item {
  position: relative;
  width: 100%;
  min-height: 200px;
  border-radius: 12px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(0, 212, 255, 0.2);
  transition: all 0.3s ease;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 15px;
  box-sizing: border-box;
}

.patent-image-item:hover {
  transform: translateY(-5px);
  border-color: var(--primary-color);
  box-shadow: 0 10px 30px rgba(0, 212, 255, 0.4);
}

.patent-image-item img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  display: block;
}

.patent-viewer-content {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.patent-viewer-nav-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 60px;
  height: 60px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  z-index: 10;
  backdrop-filter: blur(10px);
}

.patent-viewer-nav-btn:hover:not(:disabled) {
  background: rgba(0, 212, 255, 0.3);
  border-color: var(--primary-color);
  box-shadow: 0 0 25px rgba(0, 212, 255, 0.6);
  transform: translateY(-50%) scale(1.1);
}

.patent-viewer-nav-btn.prev-btn {
  left: 30px;
}

.patent-viewer-nav-btn.next-btn {
  right: 30px;
}

.patent-viewer-nav-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.patent-viewer-nav-btn:disabled:hover {
  transform: translateY(-50%);
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
  box-shadow: none;
}

.patent-image-viewer-container {
  width: 100%;
  height: 100%;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 120px;
  box-sizing: border-box;
}

.patent-image-viewer-container img {
  max-width: 100%;
  max-height: calc(100% - 60px);
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: 10px;
  box-shadow: 0 0 50px rgba(0, 212, 255, 0.5);
}

.patent-viewer-counter {
  margin-top: 20px;
  font-size: 18px;
  color: var(--text-secondary);
  font-weight: 500;
  padding: 8px 20px;
  background: rgba(0, 212, 255, 0.1);
  border-radius: 20px;
  border: 1px solid rgba(0, 212, 255, 0.3);
}

@media (max-width: 768px) {
  .model3d-modal-content {
    width: 95%;
    height: 95%;
    border-radius: 15px;
  }
  
  .model3d-close-btn {
    top: 15px;
    right: 15px;
    width: 35px;
    height: 35px;
    font-size: 20px;
  }

  .video-container {
    padding: 15px;
  }

  .patent-gallery-header {
    padding: 20px 20px 15px;
  }

  .patent-gallery-title {
    font-size: 22px;
  }

  .patent-gallery-subtitle {
    font-size: 14px;
  }

  .patent-images-grid {
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 20px;
    row-gap: 35px;
    padding: 20px 15px;
  }

  .patent-image-item {
    min-height: 150px;
    padding: 10px;
  }

  .patent-viewer-nav-btn {
    width: 45px;
    height: 45px;
  }

  .patent-viewer-nav-btn.prev-btn {
    left: 15px;
  }

  .patent-viewer-nav-btn.next-btn {
    right: 15px;
  }

  .patent-image-viewer-container {
    padding: 20px 70px;
    align-items: center;
    justify-content: center;
  }

  .patent-image-viewer-container img {
    max-width: 100%;
    max-height: calc(100vh - 200px);
    margin: 0 auto;
  }

  .patent-viewer-counter {
    font-size: 16px;
    margin-top: 15px;
  }
}

/* ============================================
   Launch Splash Screen
   ============================================ */
.launch-splash {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 1;
  visibility: visible;
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), 
              visibility 0.8s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: auto;
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
}

.launch-splash.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.splash-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #0a0e27 0%, #050714 50%, #020408 100%);
  opacity: 0.95;
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
}

.splash-background::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 50% 50%, rgba(0, 212, 255, 0.1) 0%, transparent 70%);
  animation: pulse-glow 3s ease-in-out infinite;
}

.splash-background::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 30% 30%, rgba(0, 255, 136, 0.08) 0%, transparent 60%);
  animation: pulse-glow 4s ease-in-out infinite reverse;
}

@keyframes pulse-glow {
  0%, 100% {
    opacity: 0.5;
    transform: scale(1);
  }
  50% {
    opacity: 1;
    transform: scale(1.1);
  }
}

.splash-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem;
  max-width: 800px;
  width: 100%;
  animation: fade-in-up 1s ease-out;
}

@keyframes fade-in-up {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.splash-image-wrapper {
  position: relative;
  margin-bottom: 3rem;
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-20px);
  }
}

.splash-image {
  max-width: 700px;
  width: 100%;
  height: auto;
  display: block;
  border-radius: 30px;
  filter: drop-shadow(0 0 40px rgba(0, 212, 255, 0.5));
  animation: image-glow 2s ease-in-out infinite alternate;
}

@keyframes image-glow {
  from {
    filter: drop-shadow(0 0 40px rgba(0, 212, 255, 0.5));
  }
  to {
    filter: drop-shadow(0 0 60px rgba(0, 255, 136, 0.6));
  }
}

.splash-image-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 120%;
  height: 120%;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.3) 0%, transparent 70%);
  border-radius: 50%;
  animation: glow-pulse 2s ease-in-out infinite;
  pointer-events: none;
}

@keyframes glow-pulse {
  0%, 100% {
    opacity: 0.5;
    transform: translate(-50%, -50%) scale(1);
  }
  50% {
    opacity: 0.8;
    transform: translate(-50%, -50%) scale(1.1);
  }
}

.splash-text {
  position: relative;
  z-index: 2;
}

.splash-title {
  font-family: 'Orbitron', sans-serif;
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1rem;
  letter-spacing: 0.05em;
  animation: title-shine 3s ease-in-out infinite;
  position: relative;
}

@keyframes title-shine {
  0%, 100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

.splash-subtitle {
  font-size: clamp(1.125rem, 3vw, 1.75rem);
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.splash-date {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--primary-color);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-shadow: 0 0 20px rgba(0, 212, 255, 0.5);
}

.splash-particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

.splash-particles span {
  position: absolute;
  width: 4px;
  height: 4px;
  background: var(--primary-color);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--primary-color);
  animation: particle-float 6s ease-in-out infinite;
}

.splash-particles span:nth-child(1) {
  top: 20%;
  left: 20%;
  animation-delay: 0s;
}

.splash-particles span:nth-child(2) {
  top: 60%;
  left: 80%;
  animation-delay: 1s;
}

.splash-particles span:nth-child(3) {
  top: 80%;
  left: 30%;
  animation-delay: 2s;
}

.splash-particles span:nth-child(4) {
  top: 30%;
  left: 70%;
  animation-delay: 3s;
}

.splash-particles span:nth-child(5) {
  top: 50%;
  left: 10%;
  animation-delay: 4s;
}

@keyframes particle-float {
  0%, 100% {
    transform: translateY(0) translateX(0);
    opacity: 0.3;
  }
  25% {
    transform: translateY(-30px) translateX(20px);
    opacity: 0.8;
  }
  50% {
    transform: translateY(-60px) translateX(-10px);
    opacity: 0.5;
  }
  75% {
    transform: translateY(-30px) translateX(-20px);
    opacity: 0.8;
  }
}

/* 响应式设计 */
@media (max-width: 768px) {
  .splash-image {
    max-width: 500px;
  }
  
  .splash-content {
    padding: 1.5rem;
  }
  
  .splash-image-wrapper {
    margin-bottom: 2rem;
  }
}

@media (max-width: 480px) {
  .splash-image {
    max-width: 350px;
  }
  
  .splash-title {
    font-size: 1.75rem;
  }
  
  .splash-subtitle {
    font-size: 1rem;
  }
  
  .splash-date {
    font-size: 0.9rem;
  }
}

/* ============================================
   数字人登录对话框
   ============================================ */
.digital-human-login-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 10001;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 1;
  visibility: visible;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.digital-human-login-modal[style*="display: none"] {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.digital-human-login-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.digital-human-login-card {
  position: relative;
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(30px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--border-radius-lg);
  padding: 3rem;
  width: 100%;
  max-width: 450px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4),
              0 0 60px rgba(0, 212, 255, 0.2),
              inset 0 1px 0 rgba(255, 255, 255, 0.1);
  animation: fadeInUp 0.4s ease-out;
  z-index: 1;
  overflow: hidden;
}

.digital-human-login-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  opacity: 0.8;
}

.digital-human-login-card::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.1) 0%, transparent 70%);
  animation: rotate 20s linear infinite;
  pointer-events: none;
  z-index: 0;
}

@keyframes rotate {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

.digital-human-login-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 35px;
  height: 35px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  color: var(--text-primary);
  font-size: 24px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
  z-index: 10;
}

.digital-human-login-close:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: rotate(90deg);
}

.digital-human-login-header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.digital-human-login-logo {
  width: 80px;
  height: 80px;
  margin: 0 auto 1.5rem;
  position: relative;
}

.digital-human-login-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 0 20px rgba(0, 212, 255, 0.5));
}

.digital-human-login-logo .logo-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100px;
  height: 100px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.4) 0%, transparent 70%);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

.digital-human-login-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.5rem;
}

.digital-human-login-subtitle {
  color: var(--text-secondary);
  font-size: var(--font-size-base);
}

.digital-human-login-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  position: relative;
  z-index: 1;
}

.digital-human-login-form .form-group {
  position: relative;
}

.digital-human-login-form .form-label {
  display: flex;
  align-items: center;
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.digital-human-login-form .form-label svg {
  opacity: 0.7;
  transition: opacity var(--transition-base);
}

.digital-human-login-form .form-group:focus-within .form-label svg {
  opacity: 1;
  color: var(--primary-color);
}

.input-wrapper {
  position: relative;
}

.digital-human-login-form .form-input {
  width: 100%;
  padding: 1rem 1.25rem;
  padding-right: 3rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  color: var(--text-primary);
  font-size: var(--font-size-base);
  font-family: inherit;
  transition: all var(--transition-base);
  outline: none;
  position: relative;
  z-index: 1;
}

.digital-human-login-form .form-input:focus {
  border-color: var(--primary-color);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1),
              0 0 20px rgba(0, 212, 255, 0.2);
}

.digital-human-login-form .form-input:focus + .input-focus-line,
.digital-human-login-form .form-input:focus ~ .input-focus-line {
  width: 100%;
}

.digital-human-login-form .form-input::placeholder {
  color: var(--text-muted);
}

.input-focus-line {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width 0.3s ease;
  z-index: 2;
}

.password-wrapper {
  position: relative;
}

.password-toggle {
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
  z-index: 2;
  border-radius: 4px;
}

.password-toggle:hover {
  color: var(--primary-color);
  background: rgba(0, 212, 255, 0.1);
}

.password-toggle svg {
  width: 20px;
  height: 20px;
}

.password-toggle.active .icon-eye {
  display: none;
}

.password-toggle.active .icon-eye-off {
  display: block !important;
}

.form-options {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  margin-top: -0.5rem;
}

.remember-me {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  user-select: none;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  transition: color var(--transition-base);
}

.remember-me:hover {
  color: var(--text-primary);
}

.remember-me input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
  accent-color: var(--primary-color);
  border-radius: 4px;
}

.remember-me span {
  line-height: 1;
}

.digital-human-login-form .error-message {
  background: rgba(255, 68, 68, 0.1);
  border: 1px solid rgba(255, 68, 68, 0.3);
  color: #ff6b6b;
  padding: 0.75rem 1rem;
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-sm);
  margin-top: 0.5rem;
  display: none;
  animation: shake 0.5s ease-in-out;
  position: relative;
  z-index: 1;
}

.digital-human-login-form .error-message.show {
  display: block;
}

.digital-human-login-form .login-btn {
  width: 100%;
  padding: 1rem;
  background: var(--gradient-primary);
  border: none;
  border-radius: var(--border-radius-sm);
  color: var(--bg-darkest);
  font-size: var(--font-size-lg);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  margin-top: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.digital-human-login-form .login-btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.digital-human-login-form .login-btn:hover::before {
  width: 300px;
  height: 300px;
}

.digital-human-login-form .login-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(0, 212, 255, 0.4);
}

.digital-human-login-form .login-btn:active {
  transform: translateY(0);
}

.digital-human-login-form .login-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.digital-human-login-form .login-btn .btn-text {
  transition: opacity var(--transition-base);
}

.digital-human-login-form .login-btn:disabled .btn-text {
  opacity: 0;
}

.digital-human-login-form .login-btn .btn-loading {
  position: absolute;
  display: flex;
  align-items: center;
  justify-content: center;
}

.digital-human-login-form .login-btn:disabled .btn-loading {
  display: flex !important;
}

/* ============================================
   数字人对话界面
   ============================================ */
.digital-human-chat-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 10002;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 1;
  visibility: visible;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.digital-human-chat-modal[style*="display: none"] {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.digital-human-chat-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.digital-human-chat-container {
  position: relative;
  width: 90%;
  max-width: 1000px;
  height: 85vh;
  max-height: 700px;
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(30px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--border-radius-lg);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4),
              0 0 60px rgba(0, 212, 255, 0.2);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: fadeInUp 0.4s ease-out;
  z-index: 1;
}

.digital-human-chat-body {
  flex: 1;
  display: flex;
  overflow: hidden;
}

.digital-human-chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.02);
}

.chat-header-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.chat-avatar {
  position: relative;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid rgba(0, 212, 255, 0.3);
}

.chat-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.avatar-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 60px;
  height: 60px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.3) 0%, transparent 70%);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
  pointer-events: none;
}

.chat-header-info h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 0.25rem 0;
}

.chat-status {
  font-size: var(--font-size-sm);
  color: var(--primary-color);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.chat-status::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--primary-color);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

.chat-close-btn {
  width: 35px;
  height: 35px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  color: var(--text-primary);
  font-size: 24px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
}

.chat-close-btn:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: rotate(90deg);
}

.chat-header-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.model-selector-wrapper {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.model-selector-label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  font-weight: 500;
}

.model-selector {
  padding: 0.5rem 1rem;
  background: rgba(20, 20, 30, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  color: #ffffff;
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all var(--transition-base);
  outline: none;
  min-width: 150px;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L6 6L11 1' stroke='%23ffffff' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  padding-right: 2.5rem;
}

.model-selector:hover {
  background-color: rgba(30, 30, 45, 0.95);
  border-color: rgba(0, 212, 255, 0.5);
}

.model-selector:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.2);
  background-color: rgba(30, 30, 45, 0.95);
}

.model-selector option {
  background: #1a1a2e;
  color: #ffffff;
  padding: 0.5rem;
}

.model-selector option:hover {
  background: rgba(0, 212, 255, 0.2);
}

.model-selector option:checked {
  background: rgba(0, 212, 255, 0.3);
  color: #ffffff;
}

/* 模型提示框 */
.model-warning-toast {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 10001;
  background: rgba(20, 20, 30, 0.98);
  border: 2px solid rgba(255, 68, 68, 0.5);
  border-radius: 12px;
  padding: 1.5rem 2rem;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5), 0 0 20px rgba(255, 68, 68, 0.3);
  backdrop-filter: blur(10px);
  animation: toastFadeIn 0.3s ease-out;
  min-width: 200px;
  text-align: center;
}

.model-warning-toast.show {
  display: block;
}

.toast-content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
}

.toast-icon {
  font-size: 1.5rem;
  color: #ff4444;
  font-weight: bold;
}

.toast-message {
  font-size: 1rem;
  color: #ffffff;
  font-weight: 500;
}

@keyframes toastFadeIn {
  from {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.9);
  }
  to {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
  }
}

/* 左侧虚拟人形象面板 */
.digital-human-avatar-panel {
  width: 280px;
  min-width: 280px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  border-right: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.02);
  position: relative;
  overflow: hidden;
}

.robot-avatar-container {
  position: relative;
  width: 100%;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 状态显示容器 */
.robot-status-container {
  position: absolute;
  bottom: 20%;
  left: 50%;
  transform: translateX(-50%);
  width: auto;
  padding: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 10;
}

.robot-status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: 20px;
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
}

.robot-status.listening {
  border-color: rgba(0, 212, 255, 0.3);
}

.robot-status.thinking {
  border-color: rgba(255, 193, 7, 0.3);
}

.robot-status.replying {
  border-color: rgba(76, 175, 80, 0.3);
}

.status-icon {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
  animation: statusPulse 1.5s ease-in-out infinite;
}

.listening-icon {
  background: #00d4ff;
  box-shadow: 0 0 8px rgba(0, 212, 255, 0.6);
}

.thinking-icon {
  background: #ffc107;
  box-shadow: 0 0 8px rgba(255, 193, 7, 0.6);
}

.replying-icon {
  background: #4caf50;
  box-shadow: 0 0 8px rgba(76, 175, 80, 0.6);
}

.status-text {
  font-size: 0.875rem;
  color: var(--text-primary);
  font-weight: 500;
  white-space: nowrap;
}

@keyframes statusPulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.6;
    transform: scale(1.2);
  }
}

/* 粒子效果 */
.particle-container {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  z-index: 0;
  pointer-events: none;
}

.particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: rgba(0, 212, 255, 0.6);
  border-radius: 50%;
  animation: particleFloat 8s ease-in-out infinite;
}

.particle:nth-child(1) {
  top: 20%;
  left: 20%;
  animation-delay: 0s;
  animation-duration: 6s;
}

.particle:nth-child(2) {
  top: 40%;
  left: 80%;
  animation-delay: 1s;
  animation-duration: 7s;
}

.particle:nth-child(3) {
  top: 60%;
  left: 30%;
  animation-delay: 2s;
  animation-duration: 8s;
}

.particle:nth-child(4) {
  top: 80%;
  left: 70%;
  animation-delay: 1.5s;
  animation-duration: 6.5s;
}

.particle:nth-child(5) {
  top: 30%;
  left: 60%;
  animation-delay: 0.5s;
  animation-duration: 7.5s;
}

.robot-avatar {
  width: 100%;
  max-width: 200px;
  height: auto;
  filter: drop-shadow(0 0 20px rgba(0, 212, 255, 0.3));
  animation: robotFloat 3s ease-in-out infinite, robotBreath 4s ease-in-out infinite;
  z-index: 2;
  transition: transform 0.3s ease;
  position: relative;
}

.robot-avatar:hover {
  transform: translateY(-5px) scale(1.05);
  filter: drop-shadow(0 0 30px rgba(0, 212, 255, 0.5));
}

/* 机器人头部动画 */
.robot-head {
  animation: headNod 5s ease-in-out infinite;
}

/* 面部面板呼吸效果 */
.face-panel {
  animation: faceGlow 3s ease-in-out infinite;
}

/* 眼睛组动画 */
.robot-eye {
  transform-origin: center;
}

.eye-bg {
  /* 眼睛背景，无动画 */
}

.eye-line-1 {
  animation: eyeLineGlow 1.2s ease-in-out infinite;
}

.eye-line-2,
.eye-line-3 {
  animation: eyeLineGlow 1.2s ease-in-out infinite;
  animation-delay: 0.3s;
}

/* 身体动画 */
.robot-body {
  animation: bodyBreathe 4s ease-in-out infinite;
}

.body-dot {
  animation: dotPulse 2s ease-in-out infinite;
}

.body-dot-glow {
  animation: dotGlowPulse 2s ease-in-out infinite;
}

/* 翅膀摆动动画 */
.robot-wing {
  transform-origin: top center;
}

.left-wing {
  animation: wingSwayLeft 3s ease-in-out infinite;
}

.right-wing {
  animation: wingSwayRight 3s ease-in-out infinite;
}

/* 多层光晕效果 */
.robot-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  pointer-events: none;
  z-index: 1;
}

.glow-1 {
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.25) 0%, transparent 70%);
  animation: robotGlowPulse 3s ease-in-out infinite;
}

.glow-2 {
  width: 160px;
  height: 160px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.15) 0%, transparent 70%);
  animation: robotGlowPulse 2.5s ease-in-out infinite;
  animation-delay: 0.5s;
}

/* SVG内部光晕层动画 */
.glow-layer-1 {
  animation: svgGlow1 4s ease-in-out infinite;
}

.glow-layer-2 {
  animation: svgGlow2 3s ease-in-out infinite;
}

/* 思考时的动画类 */
.robot-avatar.thinking {
  animation: robotFloat 3s ease-in-out infinite, thinkingNod 1s ease-in-out 2;
}

.robot-avatar.thinking .robot-head {
  animation: headNod 5s ease-in-out infinite, thinkingHeadNod 0.5s ease-in-out 2;
}

/* 说话时的动画类 */
.robot-avatar.speaking {
  animation: robotFloat 3s ease-in-out infinite, robotBreath 4s ease-in-out infinite, speakingPulse 0.8s ease-in-out infinite;
}

.robot-avatar.speaking .robot-head {
  animation: headNod 5s ease-in-out infinite, speakingHead 0.6s ease-in-out infinite;
}

.robot-avatar.speaking .eye-line-1,
.robot-avatar.speaking .eye-line-2,
.robot-avatar.speaking .eye-line-3 {
  animation: eyeLineGlow 1.2s ease-in-out infinite, speakingEyeGlow 0.5s ease-in-out infinite;
}

.robot-avatar.speaking .body-dot {
  animation: dotPulse 2s ease-in-out infinite, speakingDotPulse 0.6s ease-in-out infinite;
}

/* 动画关键帧 */
@keyframes robotFloat {
  0%, 100% {
    transform: translateY(0) rotate(0deg);
  }
  25% {
    transform: translateY(-8px) rotate(-0.5deg);
  }
  50% {
    transform: translateY(-12px) rotate(0deg);
  }
  75% {
    transform: translateY(-8px) rotate(0.5deg);
  }
}

@keyframes robotBreath {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.02);
  }
}

@keyframes headNod {
  0%, 100% {
    transform: translateY(0) rotate(0deg);
  }
  25% {
    transform: translateY(-2px) rotate(-1deg);
  }
  50% {
    transform: translateY(0) rotate(0deg);
  }
  75% {
    transform: translateY(-2px) rotate(1deg);
  }
}

@keyframes faceGlow {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.9;
  }
}

@keyframes eyeLineGlow {
  0%, 100% {
    opacity: 0.8;
    stroke-width: 2.5;
  }
  50% {
    opacity: 1;
    stroke-width: 3;
  }
}

@keyframes bodyBreathe {
  0%, 100% {
    transform: scaleY(1);
  }
  50% {
    transform: scaleY(1.03);
  }
}

@keyframes dotPulse {
  0%, 100% {
    r: 7;
    opacity: 1;
  }
  50% {
    r: 8;
    opacity: 0.8;
  }
}

@keyframes dotGlowPulse {
  0%, 100% {
    r: 10;
    opacity: 0.3;
  }
  50% {
    r: 14;
    opacity: 0.5;
  }
}

@keyframes wingSwayLeft {
  0%, 100% {
    transform: rotate(0deg);
  }
  50% {
    transform: rotate(-2deg);
  }
}

@keyframes wingSwayRight {
  0%, 100% {
    transform: rotate(0deg);
  }
  50% {
    transform: rotate(2deg);
  }
}

@keyframes robotGlowPulse {
  0%, 100% {
    opacity: 0.4;
    transform: translate(-50%, -50%) scale(1);
  }
  50% {
    opacity: 0.7;
    transform: translate(-50%, -50%) scale(1.15);
  }
}

@keyframes svgGlow1 {
  0%, 100% {
    opacity: 0.4;
    r: 75;
  }
  50% {
    opacity: 0.6;
    r: 80;
  }
}

@keyframes svgGlow2 {
  0%, 100% {
    opacity: 0.6;
    r: 60;
  }
  50% {
    opacity: 0.8;
    r: 65;
  }
}

@keyframes particleFloat {
  0%, 100% {
    transform: translate(0, 0) scale(1);
    opacity: 0.6;
  }
  25% {
    transform: translate(10px, -15px) scale(1.2);
    opacity: 0.8;
  }
  50% {
    transform: translate(-5px, -25px) scale(0.8);
    opacity: 1;
  }
  75% {
    transform: translate(-10px, -15px) scale(1.1);
    opacity: 0.7;
  }
}

/* 说话时的特殊动画 */
@keyframes speakingPulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

@keyframes speakingHead {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-3px);
  }
}

@keyframes speakingEyeGlow {
  0%, 100% {
    opacity: 0.8;
    stroke-width: 2.5;
  }
  50% {
    opacity: 1;
    stroke-width: 3.5;
  }
}

@keyframes thinkingNod {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-5px);
  }
}

@keyframes thinkingHeadNod {
  0%, 100% {
    transform: translateY(0) rotate(0deg);
  }
  50% {
    transform: translateY(-2px) rotate(-2deg);
  }
}

@keyframes speakingDotPulse {
  0%, 100% {
    r: 7;
    opacity: 1;
  }
  50% {
    r: 9;
    opacity: 0.9;
  }
}

/* 右侧对话区域 */
.digital-human-chat-right {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.digital-human-chat-content {
  flex: 1;
  overflow-y: auto;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.digital-human-chat-content::-webkit-scrollbar {
  width: 6px;
}

.digital-human-chat-content::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.05);
}

.digital-human-chat-content::-webkit-scrollbar-thumb {
  background: rgba(0, 212, 255, 0.3);
  border-radius: 3px;
}

.digital-human-chat-content::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 212, 255, 0.5);
}

.chat-message {
  display: flex;
  gap: 1rem;
  animation: fadeInUp 0.3s ease-out;
}

.chat-message.user-message {
  flex-direction: row-reverse;
}

.message-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
  border: 2px solid rgba(0, 212, 255, 0.3);
}

.message-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.message-content {
  flex: 1;
  max-width: 70%;
}

.message-text {
  padding: 1rem 1.25rem;
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-base);
  line-height: 1.6;
  word-wrap: break-word;
}

.bot-message .message-text {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
}

.user-message .message-text {
  background: var(--gradient-primary);
  color: var(--bg-darkest);
  font-weight: 500;
}

.message-reasoning {
  margin-bottom: 1rem;
  padding: 0.75rem 1rem;
  background: rgba(255, 193, 7, 0.1);
  border: 1px solid rgba(255, 193, 7, 0.3);
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-sm);
}

.reasoning-label {
  color: rgba(255, 193, 7, 0.9);
  font-weight: 600;
  margin-bottom: 0.5rem;
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.reasoning-text {
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.5;
  white-space: pre-wrap;
  word-wrap: break-word;
}

.streaming-message .message-text {
  position: relative;
}

.streaming-message .message-text::after {
  content: '▋';
  color: var(--primary-color);
  animation: blink 1s infinite;
}

@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

.digital-human-chat-input {
  padding: 1.5rem 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.02);
}

.chat-form {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.chat-input {
  flex: 1;
  padding: 1rem 1.25rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  color: var(--text-primary);
  font-size: var(--font-size-base);
  font-family: inherit;
  transition: all var(--transition-base);
  outline: none;
}

.chat-input:focus {
  border-color: var(--primary-color);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1),
              0 0 20px rgba(0, 212, 255, 0.2);
}

.chat-input::placeholder {
  color: var(--text-muted);
}

.chat-send-btn {
  width: 48px;
  height: 48px;
  background: var(--gradient-primary);
  border: none;
  border-radius: var(--border-radius-md);
  color: var(--bg-darkest);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
  flex-shrink: 0;
}

.chat-send-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(0, 212, 255, 0.4);
}

.chat-send-btn:active {
  transform: translateY(0);
}

.chat-send-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

@media (max-width: 768px) {
  .digital-human-chat-container {
    width: 100%;
    height: 100vh;
    max-height: 100vh;
    border-radius: 0;
    max-width: 100%;
  }
  
  .digital-human-chat-body {
    flex-direction: column;
  }
  
  .digital-human-chat-header {
    padding: 1rem 1rem;
  }
  
  .model-selector-label {
    font-size: var(--font-size-xs);
  }
  
  .model-selector {
    min-width: 120px;
    padding: 0.5rem 0.75rem;
    padding-right: 2rem;
    font-size: var(--font-size-xs);
  }
  
  .digital-human-avatar-panel {
    width: 100%;
    min-width: 100%;
    height: 200px;
    border-right: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1rem;
  }
  
  .robot-avatar {
    max-width: 120px;
  }
  
  .glow-1 {
    width: 140px;
    height: 140px;
  }
  
  .glow-2 {
    width: 110px;
    height: 110px;
  }
  
  .particle {
    width: 3px;
    height: 3px;
  }
  
  .robot-status-container {
    bottom: 15%;
  }
  
  .robot-status {
    padding: 0.4rem 0.8rem;
  }
  
  .status-text {
    font-size: 0.75rem;
  }
  
  .status-icon {
    width: 6px;
    height: 6px;
  }
}

/* 小于7英寸设备（约600px）的样式调整 - 将"倾听中"状态显示在数字人左边 */
@media (max-width: 600px) {
  .robot-status-container {
    bottom: auto;
    top: 50%;
    right: 10px;
    transform: translateX(0) translateY(-50%);
  }
}

@media (max-width: 480px) {
  .digital-human-chat-header {
    padding: 0.75rem;
  }
  
  .chat-header-left {
    gap: 0.5rem;
  }
  
  .chat-avatar {
    width: 40px;
    height: 40px;
  }
  
  .chat-header-info h3 {
    font-size: var(--font-size-base);
  }
  
  .chat-status {
    font-size: var(--font-size-xs);
  }
  
  .model-selector-label {
    font-size: 0.7rem;
  }
  
  .model-selector {
    min-width: 100px;
    padding: 0.4rem 0.6rem;
    padding-right: 1.75rem;
    font-size: 0.7rem;
  }
  
  .digital-human-login-card {
    padding: 1.5rem 1rem;
  }

  .digital-human-login-logo {
    width: 60px;
    height: 60px;
    margin-bottom: 1rem;
  }

  .digital-human-login-logo .logo-glow {
    width: 80px;
    height: 80px;
  }
}

/* ============================================
   登录页面样式
   ============================================ */
.login-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  position: relative;
  z-index: 1;
}

.login-card {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(30px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--border-radius-lg);
  padding: 3rem;
  width: 100%;
  max-width: 450px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4),
              0 0 60px rgba(0, 212, 255, 0.2);
  position: relative;
  overflow: hidden;
  animation: fadeInUp 0.6s ease-out;
}

.login-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  opacity: 0.8;
}

.login-header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.login-logo {
  width: 80px;
  height: 80px;
  margin: 0 auto 1.5rem;
  position: relative;
}

.login-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 0 20px rgba(0, 212, 255, 0.5));
}

.login-logo .logo-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100px;
  height: 100px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.4) 0%, transparent 70%);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

.login-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.5rem;
}

.login-subtitle {
  color: var(--text-secondary);
  font-size: var(--font-size-base);
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.login-form .form-group {
  position: relative;
}

.login-form .form-label {
  display: block;
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.login-form .form-input {
  width: 100%;
  padding: 1rem 1.25rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  color: var(--text-primary);
  font-size: var(--font-size-base);
  font-family: inherit;
  transition: all var(--transition-base);
  outline: none;
}

.login-form .form-input:focus {
  border-color: var(--primary-color);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1),
              0 0 20px rgba(0, 212, 255, 0.2);
}

.login-form .form-input::placeholder {
  color: var(--text-muted);
}

.login-form .login-btn {
  width: 100%;
  padding: 1rem;
  background: var(--gradient-primary);
  border: none;
  border-radius: var(--border-radius-sm);
  color: var(--bg-darkest);
  font-size: var(--font-size-lg);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  margin-top: 0.5rem;
}

.login-form .login-btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.login-form .login-btn:hover::before {
  width: 300px;
  height: 300px;
}

.login-form .login-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(0, 212, 255, 0.4);
}

.login-form .login-btn:active {
  transform: translateY(0);
}

.login-form .login-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.login-form .error-message {
  background: rgba(255, 68, 68, 0.1);
  border: 1px solid rgba(255, 68, 68, 0.3);
  color: #ff6b6b;
  padding: 0.75rem 1rem;
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-sm);
  margin-top: 0.5rem;
  display: none;
  animation: shake 0.5s ease-in-out;
}

.login-form .error-message.show {
  display: block;
}

.login-back-link {
  text-align: center;
  margin-top: 2rem;
}

.login-back-link a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: var(--font-size-sm);
  transition: color var(--transition-base);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.login-back-link a:hover {
  color: var(--primary-color);
}

@keyframes pulse {
  0%, 100% {
    opacity: 0.4;
    transform: translate(-50%, -50%) scale(1);
  }
  50% {
    opacity: 0.6;
    transform: translate(-50%, -50%) scale(1.1);
  }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-10px); }
  75% { transform: translateX(10px); }
}

@media (max-width: 640px) {
  .login-card {
    padding: 2rem 1.5rem;
  }

  .login-title {
    font-size: var(--font-size-2xl);
  }
}