/* ========================================
   「笃行致远」玻璃拟态设计系统
   Glassmorphism Design System
   ======================================== */

:root {
  /* 玻璃基础色 - 温暖色调 */
  --glass-bg: rgba(255, 255, 255, 0.12);
  --glass-bg-dark: rgba(60, 40, 20, 0.15);
  --glass-bg-light: rgba(255, 255, 255, 0.18);
  
  /* 模糊强度 */
  --blur-light: blur(10px);
  --blur-medium: blur(20px);
  --blur-heavy: blur(30px);
  
  /* 边框 */
  --border-glass: 1px solid rgba(255, 255, 255, 0.25);
  --border-subtle: 1px solid rgba(255, 255, 255, 0.15);
  --border-glow: 1px solid rgba(251, 191, 36, 0.3);
  
  /* 阴影层次 */
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.18);
  --shadow-glow: 0 0 40px rgba(251, 191, 36, 0.2);
  
  /* 圆角 */
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 28px;
  --radius-xl: 40px;
  --radius-full: 9999px;
  
  /* 动效 */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  
  /* 字体 */
  --font-display: 'Playfair Display', 'Noto Serif SC', Georgia, serif;
  --font-body: 'Noto Sans SC', 'Source Han Sans CN', sans-serif;
  
  /* 兼容旧变量 */
  --amber-50: #fffbeb;
  --amber-100: #fef3c7;
  --amber-200: #fde68a;
  --amber-300: #fcd34d;
  --amber-400: #fbbf24;
  --amber-500: #f59e0b;
  --amber-600: #d97706;
  --amber-700: #b45309;
  --amber-800: #92400e;
  --amber-900: #78350f;
  
  --bronze-50: #fdf8f3;
  --bronze-100: #f5e6d3;
  --bronze-200: #e8d0b3;
  --bronze-300: #d4a574;
  --bronze-400: #c49a6c;
  --bronze-500: #a67c52;
  --bronze-600: #8b6914;
  --bronze-700: #6b4f12;
  --bronze-800: #4a3710;
  --bronze-900: #2d1f0a;
  
  --rose-gold: #b76e79;
  --rose-gold-light: #e8b4b8;
  --rose-gold-dark: #8e4a52;
  
  --cream: #faf6f0;
  --warm-white: #fffcf7;
  --ivory: #fffff0;
  
  --text-primary: rgba(255, 255, 255, 0.95);
  --text-secondary: rgba(255, 255, 255, 0.75);
  --text-muted: rgba(255, 255, 255, 0.55);
  --text-light: rgba(255, 255, 255, 0.4);
  
  --bg-primary: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
  --bg-glass: rgba(255, 255, 255, 0.08);
  
  --border-light: rgba(255, 255, 255, 0.1);
  --border-medium: rgba(255, 255, 255, 0.2);
  --border-accent: rgba(251, 191, 36, 0.4);
  
  --shadow-soft: 0 4px 20px rgba(0, 0, 0, 0.1);
  --shadow-medium: 0 8px 40px rgba(0, 0, 0, 0.15);
  --shadow-elevated: 0 20px 60px rgba(0, 0, 0, 0.2);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  position: relative;
  line-height: 1.7;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(ellipse at 20% 20%, rgba(251, 191, 36, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(183, 110, 121, 0.12) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 50%, rgba(15, 52, 96, 0.5) 0%, transparent 70%);
  pointer-events: none;
  z-index: -2;
}

body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%' height='100%' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
  opacity: 0.03;
  pointer-events: none;
  z-index: -1;
}

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

.particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: radial-gradient(circle, rgba(251, 191, 36, 0.8) 0%, rgba(183, 110, 121, 0.4) 50%, transparent 70%);
  border-radius: 50%;
  animation: particleFloat 25s infinite linear;
  will-change: transform, opacity;
  contain: strict;
  opacity: 0.5;
  box-shadow: 0 0 10px rgba(251, 191, 36, 0.3);
}

@keyframes particleFloat {
  0% {
    transform: translateY(100vh) translateX(0) scale(0) rotate(0deg);
    opacity: 0;
  }
  10% {
    opacity: 0.5;
    transform: translateY(90vh) translateX(30px) scale(1) rotate(36deg);
  }
  50% {
    transform: translateY(50vh) translateX(100px) scale(1.3) rotate(180deg);
  }
  90% {
    opacity: 0.5;
    transform: translateY(10vh) translateX(140px) scale(1) rotate(324deg);
  }
  100% {
    transform: translateY(-100px) translateX(160px) scale(0) rotate(360deg);
    opacity: 0;
  }
}

.navbar {
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: var(--blur-heavy);
  -webkit-backdrop-filter: var(--blur-heavy);
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  transition: all var(--transition-smooth);
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.12);
  box-shadow: var(--shadow-md);
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.navbar-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 72px;
}

.navbar-logo {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  transition: transform var(--transition-fast);
}

.navbar-logo:hover {
  transform: translateY(-2px);
}

.logo-img {
  height: 44px;
  width: auto;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-smooth);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.logo-img:hover {
  box-shadow: var(--shadow-glow);
}

.navbar-logo h2 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.95);
  margin: 0;
  letter-spacing: 1px;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.navbar-menu {
  display: flex;
  align-items: center;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 6px;
  margin: 0;
  padding: 0;
}

.nav-link {
  text-decoration: none;
  color: rgba(255, 255, 255, 0.7);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 10px 18px;
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
  position: relative;
  border: 1px solid transparent;
}

.nav-link:hover {
  color: rgba(255, 255, 255, 0.95);
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.15);
}

.nav-link.active {
  color: rgba(255, 255, 255, 0.95);
  background: rgba(251, 191, 36, 0.2);
  border-color: rgba(251, 191, 36, 0.3);
  box-shadow: 0 0 20px rgba(251, 191, 36, 0.15);
}

.menu-toggle {
  display: none;
  cursor: pointer;
  font-size: 1.5rem;
  color: rgba(255, 255, 255, 0.8);
  padding: 10px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.08);
  transition: all var(--transition-fast);
}

.menu-toggle:hover {
  background: rgba(255, 255, 255, 0.15);
  color: white;
}

.main-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 100px 32px 60px;
  flex: 1;
}

header {
  text-align: center;
  padding: 80px 48px;
  background: var(--glass-bg);
  backdrop-filter: var(--blur-medium);
  -webkit-backdrop-filter: var(--blur-medium);
  border-radius: var(--radius-xl);
  margin-bottom: 60px;
  box-shadow: var(--shadow-lg);
  border: var(--border-glass);
  position: relative;
  overflow: hidden;
  animation: fadeInUp 0.8s ease-out;
}

header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, 
    transparent 0%, 
    rgba(251, 191, 36, 0.6) 20%,
    rgba(183, 110, 121, 0.6) 50%,
    rgba(251, 191, 36, 0.6) 80%,
    transparent 100%);
}

header::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.4),
    transparent
  );
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  color: rgba(255, 255, 255, 0.95);
  margin-bottom: 20px;
  letter-spacing: 4px;
  position: relative;
  z-index: 1;
  line-height: 1.3;
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.subtitle {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  color: rgba(251, 191, 36, 0.9);
  margin-bottom: 28px;
  font-style: italic;
  letter-spacing: 2px;
  position: relative;
  z-index: 1;
  text-shadow: 0 2px 15px rgba(251, 191, 36, 0.3);
}

.description {
  font-size: clamp(1rem, 1.8vw, 1.15rem);
  color: rgba(255, 255, 255, 0.75);
  line-height: 2;
  max-width: 850px;
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.08);
  padding: 28px 36px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.12);
  position: relative;
  z-index: 1;
  backdrop-filter: blur(10px);
}

.stats-section {
  background: var(--glass-bg);
  backdrop-filter: var(--blur-medium);
  -webkit-backdrop-filter: var(--blur-medium);
  border-radius: var(--radius-xl);
  padding: 60px 40px;
  margin: 60px 0;
  box-shadow: var(--shadow-lg);
  border: var(--border-glass);
  position: relative;
  overflow: hidden;
  animation: fadeInUp 0.8s ease-out 0.1s backwards;
}

.stats-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.4),
    transparent
  );
}

.stats-section::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, 
    rgba(251, 191, 36, 0.6) 0%, 
    rgba(183, 110, 121, 0.6) 50%, 
    rgba(251, 191, 36, 0.6) 100%);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  max-width: 1100px;
  margin: 0 auto;
}

.stat-item {
  text-align: center;
  padding: 28px 20px;
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all var(--transition-smooth);
  position: relative;
}

.stat-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.3),
    transparent
  );
}

.stat-item:hover {
  transform: translateY(-6px);
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(251, 191, 36, 0.3);
  box-shadow: var(--shadow-glow);
}

.stat-number {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 4vw, 3.5rem);
  font-weight: 700;
  color: rgba(251, 191, 36, 0.95);
  margin-bottom: 12px;
  display: block;
  text-shadow: 0 2px 20px rgba(251, 191, 36, 0.4);
}

.stat-label {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.6);
  font-weight: 500;
  letter-spacing: 1px;
}

.features-section {
  background: var(--glass-bg);
  backdrop-filter: var(--blur-medium);
  -webkit-backdrop-filter: var(--blur-medium);
  border-radius: var(--radius-xl);
  padding: 70px 40px;
  margin: 60px 0;
  box-shadow: var(--shadow-lg);
  border: var(--border-glass);
  position: relative;
  overflow: hidden;
  animation: fadeInUp 0.8s ease-out 0.2s backwards;
}

.features-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.4),
    transparent
  );
}

.features-section::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, 
    rgba(183, 110, 121, 0.6) 0%, 
    rgba(251, 191, 36, 0.6) 50%, 
    rgba(183, 110, 121, 0.6) 100%);
}

.features-section h2 {
  font-family: var(--font-display);
  text-align: center;
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  margin-bottom: 50px;
  color: rgba(255, 255, 255, 0.95);
  font-weight: 700;
  letter-spacing: 2px;
  text-shadow: 0 2px 15px rgba(0, 0, 0, 0.3);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 28px;
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all var(--transition-smooth);
  position: relative;
}

.feature-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.3),
    transparent
  );
}

.feature-item::after {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, rgba(251, 191, 36, 0.6) 0%, rgba(183, 110, 121, 0.6) 100%);
  border-radius: 3px 0 0 3px;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.feature-item:hover {
  transform: translateY(-4px);
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(251, 191, 36, 0.3);
  box-shadow: var(--shadow-glow);
}

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

.feature-icon {
  font-size: 2.2rem;
  color: rgba(251, 191, 36, 0.9);
  margin-top: 4px;
  flex-shrink: 0;
  text-shadow: 0 2px 15px rgba(251, 191, 36, 0.4);
}

.feature-content h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.95);
  margin-bottom: 10px;
  font-weight: 600;
}

.feature-content p {
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.7;
  font-size: 0.95rem;
}

.content-section {
  background: var(--glass-bg);
  backdrop-filter: var(--blur-medium);
  -webkit-backdrop-filter: var(--blur-medium);
  border-radius: var(--radius-xl);
  padding: 70px 40px;
  margin: 60px 0;
  box-shadow: var(--shadow-lg);
  border: var(--border-glass);
  position: relative;
  overflow: hidden;
  animation: fadeInUp 0.8s ease-out backwards;
}

.content-section:nth-child(6) { animation-delay: 0.3s; }
.content-section:nth-child(7) { animation-delay: 0.4s; }
.content-section:nth-child(8) { animation-delay: 0.5s; }
.content-section:nth-child(9) { animation-delay: 0.6s; }
.content-section:nth-child(10) { animation-delay: 0.7s; }
.content-section:nth-child(11) { animation-delay: 0.8s; }

.content-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.4),
    transparent
  );
}

.content-section::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, 
    rgba(251, 191, 36, 0.6) 0%, 
    rgba(183, 110, 121, 0.6) 50%, 
    rgba(251, 191, 36, 0.6) 100%);
}

.content-container {
  max-width: 1100px;
  margin: 0 auto;
}

.section-title {
  font-family: var(--font-display);
  text-align: center;
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  margin-bottom: 28px;
  color: rgba(255, 255, 255, 0.95);
  font-weight: 700;
  letter-spacing: 2px;
  text-shadow: 0 2px 15px rgba(0, 0, 0, 0.3);
}

.section-content {
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.9;
  font-size: 1.05rem;
}

.section-content > p {
  margin-bottom: 28px;
  text-align: center;
  font-weight: 400;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 40px;
}

.feature-box {
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(10px);
  padding: 36px 28px;
  border-radius: var(--radius-lg);
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.feature-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.4),
    transparent
  );
}

.feature-box::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, rgba(251, 191, 36, 0.6) 0%, rgba(183, 110, 121, 0.6) 100%);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.feature-box:hover {
  transform: translateY(-6px);
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(251, 191, 36, 0.3);
  box-shadow: var(--shadow-glow);
}

.feature-box:hover::after {
  opacity: 1;
}

.feature-box .feature-icon {
  font-size: 3rem;
  color: rgba(251, 191, 36, 0.9);
  margin-bottom: 20px;
  text-shadow: 0 2px 20px rgba(251, 191, 36, 0.4);
}

.feature-box h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: rgba(255, 255, 255, 0.95);
  margin-bottom: 14px;
  font-weight: 600;
}

.feature-box p {
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.7;
  text-align: center;
  font-size: 0.95rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 40px;
  background: rgba(251, 191, 36, 0.25);
  backdrop-filter: blur(10px);
  color: rgba(255, 255, 255, 0.95);
  text-decoration: none;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 1.05rem;
  transition: all var(--transition-smooth);
  border: 1px solid rgba(251, 191, 36, 0.4);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.4),
    transparent
  );
}

.btn::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.6s ease;
}

.btn:hover::after {
  left: 100%;
}

.btn:hover {
  transform: translateY(-3px);
  background: rgba(251, 191, 36, 0.35);
  border-color: rgba(251, 191, 36, 0.6);
  box-shadow: var(--shadow-glow), 0 8px 30px rgba(251, 191, 36, 0.25);
  color: white;
}

.btn:active {
  transform: translateY(-1px);
}

.btn.disabled {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.15);
  color: rgba(255, 255, 255, 0.4);
  cursor: not-allowed;
  pointer-events: none;
}

footer {
  text-align: center;
  padding: 50px 32px;
  background: rgba(255, 255, 255, 0.04);
  backdrop-filter: var(--blur-heavy);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  position: relative;
  overflow: hidden;
  margin-top: auto;
}

footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.3),
    transparent
  );
}

footer::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, 
    rgba(251, 191, 36, 0.5) 0%, 
    rgba(183, 110, 121, 0.5) 50%, 
    rgba(251, 191, 36, 0.5) 100%);
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.footer-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-bottom: 20px;
  transition: transform var(--transition-fast);
}

.footer-logo:hover {
  transform: translateY(-2px);
}

.footer-logo img {
  height: 38px;
  width: auto;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.footer-logo h3 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  color: rgba(255, 255, 255, 0.9);
  margin: 0;
  font-weight: 600;
  letter-spacing: 1px;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.footer-text {
  margin-bottom: 16px;
  font-weight: 400;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.6);
}

.footer-copyright {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.5);
  margin-top: 16px;
  font-weight: 400;
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(10px);
  padding: 12px 28px;
  border-radius: var(--radius-full);
  display: inline-block;
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all var(--transition-fast);
}

.footer-copyright:hover {
  transform: translateY(-2px);
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(251, 191, 36, 0.3);
  color: rgba(251, 191, 36, 0.9);
}

@media (max-width: 992px) {
  .navbar-menu {
    position: fixed;
    top: 72px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 72px);
    background: rgba(10, 10, 30, 0.95);
    backdrop-filter: var(--blur-heavy);
    transition: left var(--transition-smooth);
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .navbar-menu.active {
    left: 0;
  }

  .nav-links {
    flex-direction: column;
    align-items: center;
    padding: 40px 0;
    gap: 8px;
  }

  .nav-link {
    font-size: 1.1rem;
    padding: 14px 28px;
  }

  .menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }
}

@media (max-width: 768px) {
  .navbar-container {
    padding: 0 20px;
    height: 64px;
  }

  .navbar-logo h2 {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.9);
  }

  .logo-img {
    height: 36px;
  }

  .main-container {
    padding: 80px 16px 40px;
  }

  header {
    padding: 50px 24px;
    margin-bottom: 40px;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: var(--blur-medium);
  }

  h1 {
    letter-spacing: 2px;
    color: rgba(255, 255, 255, 0.95);
  }

  .subtitle {
    letter-spacing: 1px;
    color: rgba(251, 191, 36, 0.9);
  }

  .description {
    padding: 20px 24px;
    font-size: 0.95rem;
    background: rgba(255, 255, 255, 0.06);
    color: rgba(255, 255, 255, 0.75);
  }

  .stats-section,
  .features-section,
  .content-section {
    padding: 45px 20px;
    margin: 40px 0;
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.06);
    backdrop-filter: var(--blur-medium);
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .stat-item {
    padding: 20px 12px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
  }

  .stat-number {
    color: rgba(251, 191, 36, 0.95);
  }

  .stat-label {
    color: rgba(255, 255, 255, 0.6);
  }

  .features-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .feature-item {
    padding: 20px;
    gap: 16px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
  }

  .feature-icon {
    color: rgba(251, 191, 36, 0.9);
  }

  .feature-content h3 {
    color: rgba(255, 255, 255, 0.95);
  }

  .feature-content p {
    color: rgba(255, 255, 255, 0.6);
  }

  .feature-grid {
    grid-template-columns: 1fr;
    gap: 16px;
    margin-top: 28px;
  }

  .feature-box {
    padding: 28px 20px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
  }

  .feature-box .feature-icon {
    color: rgba(251, 191, 36, 0.9);
  }

  .feature-box h3 {
    color: rgba(255, 255, 255, 0.95);
  }

  .feature-box p {
    color: rgba(255, 255, 255, 0.6);
  }

  .btn {
    padding: 14px 32px;
    font-size: 1rem;
    background: rgba(251, 191, 36, 0.25);
    border: 1px solid rgba(251, 191, 36, 0.4);
    color: rgba(255, 255, 255, 0.95);
  }

  footer {
    padding: 36px 20px;
    background: rgba(255, 255, 255, 0.04);
  }

  .footer-logo h3 {
    color: rgba(255, 255, 255, 0.9);
  }

  .footer-text {
    color: rgba(255, 255, 255, 0.6);
  }

  .footer-copyright {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.5);
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .navbar-logo h2 {
    font-size: 1rem;
    letter-spacing: 0;
  }

  h1 {
    font-size: 2rem;
    letter-spacing: 1px;
  }

  .subtitle {
    font-size: 1rem;
  }
}

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

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
    opacity: 0.6;
  }
  50% {
    transform: scale(1.1);
    opacity: 0.8;
  }
}

::selection {
  background: rgba(251, 191, 36, 0.3);
  color: var(--amber-900);
}

::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--amber-400) 0%, var(--bronze-400) 100%);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, var(--amber-500) 0%, var(--bronze-500) 100%);
}

.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--amber-500) 0%, var(--bronze-500) 100%);
  color: white;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  box-shadow: 0 8px 24px rgba(180, 83, 9, 0.3);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-smooth);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(180, 83, 9, 0.4);
}

.back-to-top:active {
  transform: translateY(-2px);
}

@media (max-width: 768px) {
  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
    font-size: 1rem;
  }
}

.animate-ready {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-in {
  opacity: 1;
  transform: translateY(0);
}

/* ========================================
   高级动态效果
   ======================================== */

/* 滚动进度条 */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--amber-400), var(--bronze-400), var(--rose-gold));
  z-index: 10000;
  transition: width 0.1s linear;
  box-shadow: 0 0 10px var(--amber-400);
}

/* 鼠标跟随光晕 */
.cursor-glow {
  position: fixed;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(251, 191, 36, 0.08) 0%, transparent 70%);
  pointer-events: none;
  z-index: 9998;
  transform: translate(-50%, -50%);
  transition: opacity 0.3s ease;
  opacity: 0;
}

body:hover .cursor-glow {
  opacity: 1;
}

/* 增强卡片3D悬停效果 */
.feature-box,
.stat-item,
.feature-item {
  transform-style: preserve-3d;
  perspective: 1000px;
}

.feature-box:hover,
.stat-item:hover,
.feature-item:hover {
  transform: translateY(-8px) rotateX(2deg) rotateY(-2deg);
}

/* 按钮涟漪效果 */
.btn {
  position: relative;
  overflow: hidden;
}

.btn .ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.4);
  transform: scale(0);
  animation: rippleEffect 0.6s linear;
  pointer-events: none;
}

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

/* 数字计数动画 */
.stat-number {
  transition: transform 0.3s ease;
}

.stat-number.counting {
  animation: countPulse 0.5s ease infinite;
}

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

/* 增强渐入动画 */
@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInScale {
  from {
    opacity: 0;
    transform: scale(0.8);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes slideInFromBottom {
  from {
    opacity: 0;
    transform: translateY(60px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 浮动动画 */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* 发光脉冲效果 */
@keyframes glowPulse {
  0%, 100% {
    box-shadow: 0 0 20px rgba(251, 191, 36, 0.2);
  }
  50% {
    box-shadow: 0 0 40px rgba(251, 191, 36, 0.4), 0 0 60px rgba(251, 191, 36, 0.2);
  }
}

/* 增强header区域 */
header {
  position: relative;
}

header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, 
    var(--amber-400) 0%, 
    var(--bronze-400) 25%, 
    var(--rose-gold) 50%, 
    var(--bronze-400) 75%, 
    var(--amber-400) 100%);
  background-size: 200% 100%;
  animation: shimmer 3s ease-in-out infinite;
}

/* 装饰性光点 */
.decoration-dot {
  position: absolute;
  width: 8px;
  height: 8px;
  background: var(--amber-400);
  border-radius: 50%;
  animation: glowPulse 2s ease-in-out infinite;
  opacity: 0.6;
}

/* 文字打字机效果 */
.typewriter {
  overflow: hidden;
  border-right: 2px solid var(--amber-600);
  white-space: nowrap;
  animation: typing 3s steps(30) forwards, blink 0.7s step-end infinite;
}

@keyframes typing {
  from { width: 0; }
  to { width: 100%; }
}

@keyframes blink {
  50% { border-color: transparent; }
}

/* 增强feature-item动画 */
.feature-item .feature-icon {
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.feature-item:hover .feature-icon {
  transform: scale(1.2) rotate(10deg);
}

/* 导航链接下划线动画 */
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 6px;
  left: 50%;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--amber-400), var(--rose-gold));
  transition: all 0.3s ease;
  transform: translateX(-50%);
}

.nav-link:hover::after {
  width: 60%;
}

/* 图片加载动画 */
img {
  transition: opacity 0.5s ease, transform 0.5s ease;
}

img.loading {
  opacity: 0;
  transform: scale(0.95);
}

img.loaded {
  opacity: 1;
  transform: scale(1);
}

/* 骨架屏动画 */
@keyframes skeleton-loading {
  0% { background-position: -200px 0; }
  100% { background-position: calc(200px + 100%) 0; }
}

.skeleton {
  background: linear-gradient(90deg, var(--bg-secondary) 8%, var(--bg-card) 18%, var(--bg-secondary) 33%);
  background-size: 200px 100%;
  animation: skeleton-loading 1.5s infinite;
}

/* 玻璃态悬停效果 */
.glass-effect {
  transition: all 0.4s ease;
}

.glass-effect:hover {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 20px 60px rgba(139, 105, 20, 0.15);
  transform: translateY(-4px);
}

/* 进度指示器动画 */
@keyframes progressIndicator {
  0% { width: 0%; }
  100% { width: 100%; }
}

/* 增强content-section交错动画 */
.content-section {
  opacity: 0;
  transform: translateY(40px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.content-section.visible {
  opacity: 1;
  transform: translateY(0);
}

.content-section:nth-child(odd) {
  transform: translateX(-40px);
}

.content-section:nth-child(odd).visible {
  transform: translateX(0);
}

.content-section:nth-child(even) {
  transform: translateX(40px);
}

.content-section:nth-child(even).visible {
  transform: translateX(0);
}

/* 装饰性线条动画 */
@keyframes lineGrow {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}

.decorative-line {
  width: 80px;
  height: 3px;
  background: linear-gradient(90deg, var(--amber-400), var(--rose-gold));
  margin: 20px auto;
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.6s ease;
}

.visible .decorative-line {
  transform: scaleX(1);
}

/* 悬停时卡片微微上浮并显示阴影 */
.card-hover-lift {
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.card-hover-lift:hover {
  transform: translateY(-12px) scale(1.02);
  box-shadow: var(--shadow-elevated);
}

/* Logo呼吸灯效果 */
.logo-img {
  animation: logoGlow 3s ease-in-out infinite;
}

@keyframes logoGlow {
  0%, 100% {
    filter: drop-shadow(0 0 2px rgba(251, 191, 36, 0.2));
  }
  50% {
    filter: drop-shadow(0 0 8px rgba(251, 191, 36, 0.5));
  }
}