/* ========================================
   金牛奇迹 - 统一3D视觉设计系统
   基于 AntV G6 3D 设计规范
   主色调: #C2B59B (金色) | #0a0a0f (深空黑) | #ffffff (纯白)
   ======================================== */

:root {
  /* 主色调 - 金色系 */
  --primary: #C2B59B;
  --primary-light: #d4c9b3;
  --primary-dark: #a8997d;
  --primary-glow: rgba(194, 181, 155, 0.6);
  
  /* 背景色 - 深空黑 */
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-tertiary: #1a1a24;
  --bg-card: rgba(18, 18, 26, 0.85);
  --bg-glass: rgba(18, 18, 26, 0.6);
  
  /* 文字色 */
  --text-primary: #ffffff;
  --text-secondary: #b8b8c8;
  --text-tertiary: #7a7a8a;
  --text-muted: #5a5a6a;
  
  /* 功能色 */
  --success: #52c41a;
  --warning: #faad14;
  --error: #f5222d;
  --info: #1890ff;
  
  /* 渐变 */
  --gradient-gold: linear-gradient(135deg, #C2B59B 0%, #d4c9b3 50%, #a8997d 100%);
  --gradient-gold-radial: radial-gradient(ellipse at center, #C2B59B 0%, #a8997d 100%);
  --gradient-dark: linear-gradient(180deg, #0a0a0f 0%, #12121a 100%);
  --gradient-card: linear-gradient(145deg, rgba(26, 26, 36, 0.9) 0%, rgba(18, 18, 26, 0.9) 100%);
  
  /* 阴影 */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
  --shadow-gold: 0 0 30px rgba(194, 181, 155, 0.3);
  --shadow-gold-lg: 0 0 60px rgba(194, 181, 155, 0.5);
  
  /* 边框 */
  --border-light: 1px solid rgba(194, 181, 155, 0.15);
  --border-medium: 1px solid rgba(194, 181, 155, 0.3);
  --border-glow: 1px solid rgba(194, 181, 155, 0.5);
  
  /* 圆角 */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-full: 9999px;
  
  /* 间距 */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  
  /* 字体 */
  --font-display: 'Orbitron', sans-serif;
  --font-body: 'Noto Sans SC', sans-serif;
  
  /* 动画 */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* ========================================
   基础重置与全局样式
   ======================================== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

/* 滚动条样式 */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--primary-dark);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}

/* 选中文字样式 */
::selection {
  background: rgba(194, 181, 155, 0.3);
  color: var(--text-primary);
}

/* ========================================
   页面背景轮播
   ======================================== */
.page-bg-slider {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  transition: opacity 1.5s ease-in-out;
}

.page-bg-slider::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    to bottom,
    rgba(10, 10, 15, 0.7) 0%,
    rgba(10, 10, 15, 0.5) 50%,
    rgba(10, 10, 15, 0.8) 100%
  );
  pointer-events: none;
}

/* ========================================
   首页视频背景
   ======================================== */
.video-bg-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
  overflow: hidden;
  background: var(--bg-primary);
}

.bg-video {
  position: absolute;
  top: 50%;
  left: 50%;
  min-width: 100%;
  min-height: 100%;
  width: auto;
  height: auto;
  transform: translate(-50%, -50%);
  object-fit: cover;
  opacity: 0;
  transition: opacity 0.5s ease-in-out;
}

.video-bg-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    to bottom,
    rgba(10, 10, 15, 0.6) 0%,
    rgba(10, 10, 15, 0.4) 50%,
    rgba(10, 10, 15, 0.7) 100%
  );
  pointer-events: none;
}

/* ========================================
   3D粒子背景 - 全局
   ======================================== */
#particles-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background: 
    radial-gradient(ellipse at 20% 20%, rgba(194, 181, 155, 0.03) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(194, 181, 155, 0.03) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 50%, rgba(194, 181, 155, 0.02) 0%, transparent 70%),
    transparent;
  overflow: hidden;
}

#particles-bg::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  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%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
  opacity: 0.02;
  pointer-events: none;
}

/* ========================================
   导航栏 - 3D玻璃拟态
   ======================================== */
#mainNav {
  background: var(--bg-glass);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: var(--border-light);
  padding: var(--space-md) 0;
  transition: all var(--transition-normal);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
}

#mainNav.scrolled {
  background: rgba(10, 10, 15, 0.95);
  padding: var(--space-sm) 0;
  box-shadow: var(--shadow-lg);
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
}

.brand-text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.6rem;
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 2px;
  position: relative;
}

.brand-text::after {
  content: '金牛奇迹';
  position: absolute;
  left: 0;
  top: 0;
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: blur(8px);
  opacity: 0.5;
}

.logo-3d {
  height: 40px;
  filter: drop-shadow(0 0 10px var(--primary-glow));
  animation: logoFloat 4s ease-in-out infinite;
}

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

.nav-link {
  color: var(--text-secondary) !important;
  font-weight: 500;
  padding: var(--space-sm) var(--space-md) !important;
  margin: 0 var(--space-xs);
  border-radius: var(--radius-full);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.nav-link::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(194, 181, 155, 0.1), transparent);
  transition: left 0.5s ease;
}

.nav-link:hover::before {
  left: 100%;
}

.nav-link:hover {
  color: var(--primary) !important;
  background: rgba(194, 181, 155, 0.1);
  transform: translateY(-2px);
}

.nav-link.active {
  color: var(--primary) !important;
  background: rgba(194, 181, 155, 0.15);
}

/* 导航按钮 */
.btn-nav-login,
.btn-nav-register {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-full);
  font-weight: 600;
  transition: all var(--transition-normal);
}

.btn-nav-login {
  border: var(--border-medium);
  color: var(--primary);
}

.btn-nav-login:hover {
  background: rgba(194, 181, 155, 0.1);
  box-shadow: var(--shadow-gold);
}

.btn-nav-register {
  background: var(--gradient-gold);
  color: var(--bg-primary) !important;
  border: none;
}

.btn-nav-register:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-gold-lg);
}

/* ========================================
   Hero Section - 3D沉浸式首屏
   ======================================== */
.hero-section {
  min-height: 50vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 150px 0 60px;
  overflow: hidden;
  background: transparent;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    linear-gradient(180deg, rgba(10, 10, 15, 0.3) 0%, transparent 100%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}

/* 3D标题效果 */
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 900;
  margin-bottom: var(--space-lg);
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 0 60px rgba(194, 181, 155, 0.3);
  position: relative;
  animation: titleGlow 3s ease-in-out infinite;
}

@keyframes titleGlow {
  0%, 100% { filter: brightness(1) drop-shadow(0 0 20px rgba(194, 181, 155, 0.3)); }
  50% { filter: brightness(1.2) drop-shadow(0 0 40px rgba(194, 181, 155, 0.5)); }
}

.hero-title::before {
  content: attr(data-text);
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: blur(20px);
  opacity: 0.5;
  z-index: -1;
}

/* 副标题 */
.hero-subtitle {
  font-size: clamp(1.2rem, 3vw, 1.8rem);
  color: var(--text-secondary);
  margin-bottom: var(--space-2xl);
  font-weight: 300;
  letter-spacing: 3px;
}

.typing-text {
  display: inline;
}

.cursor-blink {
  animation: blink 1s step-end infinite;
  color: var(--primary);
}

@keyframes blink {
  50% { opacity: 0; }
}

/* 3D徽章组 */
.hero-badges {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
  flex-wrap: wrap;
}

.badge-3d {
  background: var(--bg-glass);
  border: var(--border-medium);
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-full);
  color: var(--primary);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  backdrop-filter: blur(10px);
  transition: all var(--transition-normal);
  animation: badgeFloat 3s ease-in-out infinite;
}

.badge-3d:nth-child(1) { animation-delay: 0s; }
.badge-3d:nth-child(2) { animation-delay: 0.5s; }
.badge-3d:nth-child(3) { animation-delay: 1s; }
.badge-3d:nth-child(4) { animation-delay: 1.5s; }

@keyframes badgeFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.badge-3d:hover {
  background: rgba(194, 181, 155, 0.2);
  border-color: var(--primary);
  transform: translateY(-5px) scale(1.05);
  box-shadow: var(--shadow-gold);
}

/* CTA按钮组 */
.hero-cta {
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

/* ========================================
   3D按钮系统
   ======================================== */
.btn-3d {
  position: relative;
  padding: var(--space-md) var(--space-2xl);
  font-size: 1.1rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  overflow: hidden;
  transition: all var(--transition-normal);
  border: none;
  cursor: pointer;
  isolation: isolate;
}

.btn-3d::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.6s ease;
  z-index: -1;
}

.btn-3d:hover::before {
  left: 100%;
}

.btn-3d-primary {
  background: var(--gradient-gold);
  color: var(--bg-primary);
  box-shadow: 0 10px 30px rgba(194, 181, 155, 0.4);
}

.btn-3d-primary:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 20px 50px rgba(194, 181, 155, 0.6);
  color: var(--bg-primary);
}

.btn-3d-secondary {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn-3d-secondary:hover {
  background: var(--primary);
  color: var(--bg-primary);
  transform: translateY(-4px) scale(1.02);
  box-shadow: var(--shadow-gold);
}

.btn-3d-lg {
  padding: var(--space-lg) var(--space-3xl);
  font-size: 1.2rem;
}

/* ========================================
   章节标题 - 3D效果
   ======================================== */
.section-header-3d {
  text-align: center;
  margin-bottom: var(--space-3xl);
  position: relative;
}

.section-title-3d {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-md);
  position: relative;
  display: inline-block;
}

.section-title-3d::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: var(--gradient-gold);
  border-radius: 2px;
}

.section-subtitle-3d {
  color: var(--text-secondary);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

/* ========================================
   内容区域 - 玻璃拟态背景
   ======================================== */
.content-section {
  padding: var(--space-3xl) 0;
  position: relative;
}

.content-section-alt {
  background: rgba(18, 18, 26, 0.4);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

/* ========================================
   3D卡片系统 - 玻璃拟态
   ======================================== */
.card-3d {
  background: rgba(18, 18, 26, 0.65);
  border: var(--border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-slow);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  transform-style: preserve-3d;
}

.card-3d::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(194, 181, 155, 0.05), transparent);
  transition: left 0.8s ease;
}

.card-3d:hover::before {
  left: 100%;
}

.card-3d:hover {
  transform: translateY(-10px) rotateX(5deg);
  border-color: rgba(194, 181, 155, 0.3);
  box-shadow: 
    var(--shadow-lg),
    0 0 40px rgba(194, 181, 155, 0.1);
}

.card-3d-icon {
  width: 70px;
  height: 70px;
  background: rgba(194, 181, 155, 0.1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-lg);
  border: var(--border-medium);
  transition: all var(--transition-normal);
}

.card-3d:hover .card-3d-icon {
  background: rgba(194, 181, 155, 0.2);
  border-color: var(--primary);
  transform: rotateY(360deg);
}

.card-3d-title {
  font-size: 1.3rem;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
  font-weight: 600;
}

.card-3d-desc {
  color: var(--text-secondary);
  line-height: 1.8;
  font-size: 0.95rem;
}

/* ========================================
   特性卡片
   ======================================== */
.feature-card {
  background: rgba(18, 18, 26, 0.65);
  border: var(--border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  text-align: center;
  position: relative;
  overflow: hidden;
  transition: all var(--transition-slow);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  height: 100%;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(194, 181, 155, 0.05), transparent);
  transition: left 0.8s ease;
}

.feature-card:hover::before {
  left: 100%;
}

.feature-card:hover {
  transform: translateY(-15px) rotateX(5deg);
  border-color: rgba(194, 181, 155, 0.3);
  box-shadow: 
    var(--shadow-lg),
    0 0 40px rgba(194, 181, 155, 0.1);
}

.feature-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--space-lg);
  background: rgba(194, 181, 155, 0.1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  border: var(--border-medium);
  transition: all var(--transition-normal);
}

.feature-card:hover .feature-icon {
  background: rgba(194, 181, 155, 0.2);
  border-color: var(--primary);
  transform: rotateY(360deg);
}

.feature-icon svg {
  width: 40px;
  height: 40px;
  stroke: var(--primary);
}

.feature-title {
  font-size: 1.3rem;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
  font-weight: 600;
}

.feature-desc {
  color: var(--text-secondary);
  line-height: 1.8;
  font-size: 0.95rem;
}

/* ========================================
   下载卡片
   ======================================== */
.download-card {
  background: rgba(18, 18, 26, 0.65);
  border: var(--border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  text-align: center;
  position: relative;
  overflow: hidden;
  transition: all var(--transition-slow);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  height: 100%;
}

.download-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(194, 181, 155, 0.05), transparent);
  transition: left 0.8s ease;
}

.download-card:hover::before {
  left: 100%;
}

.download-card:hover {
  transform: translateY(-15px) rotateX(5deg);
  border-color: rgba(194, 181, 155, 0.3);
  box-shadow: 
    var(--shadow-lg),
    0 0 40px rgba(194, 181, 155, 0.1);
}

.download-card.disabled {
  opacity: 0.6;
  filter: grayscale(0.5);
  pointer-events: none;
}

.download-icon {
  width: 90px;
  height: 90px;
  margin: 0 auto var(--space-lg);
  background: rgba(194, 181, 155, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: var(--border-medium);
  transition: all var(--transition-normal);
}

.download-card:hover .download-icon {
  background: rgba(194, 181, 155, 0.2);
  border-color: var(--primary);
  transform: scale(1.1);
}

.download-icon svg {
  width: 45px;
  height: 45px;
  stroke: var(--primary);
}

.download-title {
  font-size: 1.5rem;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
  font-weight: 600;
}

.download-desc {
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
  line-height: 1.6;
}

.download-meta {
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
}

.meta-item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--text-tertiary);
  font-size: 0.9rem;
}

.meta-item svg {
  width: 16px;
  height: 16px;
  stroke: var(--primary);
}

.download-note {
  margin-top: var(--space-md);
  color: var(--primary);
  font-size: 0.9rem;
}

.download-note small {
  background: rgba(194, 181, 155, 0.1);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-full);
  border: var(--border-light);
}

/* ========================================
   新闻卡片
   ======================================== */
.news-card {
  background: rgba(18, 18, 26, 0.4);
  border: 1px solid rgba(194, 181, 155, 0.15);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-slow);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  height: 100%;
  display: flex;
  flex-direction: column;
  box-shadow: 
    0 4px 30px rgba(0, 0, 0, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.news-card:hover {
  transform: translateY(-10px);
  background: rgba(18, 18, 26, 0.5);
  border-color: rgba(194, 181, 155, 0.25);
  box-shadow: 
    0 8px 40px rgba(0, 0, 0, 0.4),
    0 0 30px rgba(194, 181, 155, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.news-image-wrapper {
  position: relative;
  height: 200px;
  overflow: hidden;
}

.news-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.news-card:hover .news-image {
  transform: scale(1.1);
}

.news-image-placeholder {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(194, 181, 155, 0.1), rgba(194, 181, 155, 0.05));
  display: flex;
  align-items: center;
  justify-content: center;
}

.news-image-placeholder svg {
  width: 48px;
  height: 48px;
  stroke: var(--primary);
  opacity: 0.5;
}

.news-content {
  padding: var(--space-lg);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.news-date {
  color: var(--primary);
  font-size: 0.9rem;
  margin-bottom: var(--space-sm);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.news-date svg {
  width: 14px;
  height: 14px;
  stroke: var(--primary);
}

.news-title {
  color: var(--text-primary);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  line-height: 1.4;
  flex: 1;
}

.news-excerpt {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: var(--space-md);
}

/* ========================================
   职业卡片
   ======================================== */
.class-card {
  background: rgba(18, 18, 26, 0.65);
  border: var(--border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  text-align: center;
  transition: all var(--transition-slow);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  height: 100%;
}

.class-card:hover {
  transform: translateY(-15px) rotateX(5deg);
  border-color: rgba(194, 181, 155, 0.3);
  box-shadow: 
    var(--shadow-lg),
  0 0 40px rgba(194, 181, 155, 0.1);
}

.class-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--space-lg);
  background: rgba(194, 181, 155, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: var(--border-medium);
  transition: all var(--transition-normal);
}

.class-card:hover .class-icon {
  background: rgba(194, 181, 155, 0.2);
  border-color: var(--primary);
  transform: scale(1.1) rotateY(360deg);
}

.class-icon svg {
  width: 40px;
  height: 40px;
  stroke: var(--primary);
}

.class-name {
  font-size: 1.3rem;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
  font-weight: 600;
}

.class-desc {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: var(--space-md);
}

.class-stats {
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
}

.class-stat {
  text-align: center;
}

.class-stat-value {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--primary);
  font-weight: 700;
}

.class-stat-label {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  text-transform: uppercase;
}

/* ========================================
   攻略步骤
   ======================================== */
.guide-step {
  background: rgba(18, 18, 26, 0.65);
  border: var(--border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-slow);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  margin-bottom: var(--space-lg);
}

.guide-step:hover {
  transform: translateY(-10px);
  border-color: rgba(194, 181, 155, 0.3);
  box-shadow: var(--shadow-lg);
}

.step-number {
  font-family: var(--font-display);
  font-size: 4rem;
  font-weight: 900;
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.2;
  position: absolute;
  top: var(--space-md);
  right: var(--space-lg);
  line-height: 1;
}

.step-title {
  font-size: 1.4rem;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
  font-weight: 600;
  padding-right: 80px;
}

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

.step-content ul {
  list-style: none;
  padding: 0;
}

.step-content li {
  padding-left: var(--space-lg);
  position: relative;
  margin-bottom: var(--space-sm);
}

.step-content li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: bold;
}

/* ========================================
   地图卡片
   ======================================== */
.map-card {
  background: rgba(18, 18, 26, 0.65);
  border: var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-slow);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  height: 100%;
}

.map-card:hover {
  transform: translateY(-10px);
  border-color: rgba(194, 181, 155, 0.3);
  box-shadow: 
    var(--shadow-lg),
    0 0 40px rgba(194, 181, 155, 0.1);
}

.map-header {
  background: linear-gradient(135deg, rgba(194, 181, 155, 0.15) 0%, rgba(194, 181, 155, 0.05) 100%);
  padding: var(--space-lg);
  border-bottom: var(--border-light);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.map-title {
  font-size: 1.2rem;
  color: var(--text-primary);
  font-weight: 600;
  margin: 0;
}

.map-level {
  background: rgba(194, 181, 155, 0.2);
  color: var(--primary);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
}

.map-content {
  padding: var(--space-lg);
}

.map-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: var(--space-md);
  line-height: 1.6;
}

.map-monsters,
.map-drops {
  margin-bottom: var(--space-md);
}

.map-monsters h5,
.map-drops h5 {
  color: var(--primary);
  font-size: 0.95rem;
  margin-bottom: var(--space-sm);
  font-weight: 600;
}

.map-monsters ul,
.map-drops ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.map-monsters li,
.map-drops li {
  color: var(--text-secondary);
  font-size: 0.85rem;
  padding-left: var(--space-md);
  position: relative;
  margin-bottom: var(--space-xs);
  line-height: 1.5;
}

.map-monsters li::before,
.map-drops li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--primary);
}

.map-tips {
  background: rgba(194, 181, 155, 0.1);
  border-left: 3px solid var(--primary);
  padding: var(--space-md);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.map-tips strong {
  color: var(--primary);
}

/* ========================================
   地图分类
   ======================================== */
.map-category {
  margin-bottom: var(--space-3xl);
}

.map-category:last-child {
  margin-bottom: 0;
}

.map-category-title {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  font-size: 1.5rem;
  color: var(--text-primary);
  margin-bottom: var(--space-xl);
  padding: var(--space-lg);
  background: rgba(18, 18, 26, 0.65);
  border: var(--border-light);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.map-category-title svg {
  width: 24px;
  height: 24px;
  stroke: var(--primary);
  flex-shrink: 0;
}

/* ========================================
   统计数据 - 3D
   ======================================== */
.stats-3d-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-xl);
}

.stat-3d-item {
  background: rgba(18, 18, 26, 0.65);
  border: var(--border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  text-align: center;
  position: relative;
  overflow: hidden;
  transition: all var(--transition-normal);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.stat-3d-item:hover {
  transform: translateY(-10px);
  border-color: rgba(194, 181, 155, 0.3);
  box-shadow: var(--shadow-lg);
}

.stat-3d-number {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 900;
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-sm);
}

.stat-3d-label {
  color: var(--text-secondary);
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 2px;
}

.stat-3d-bar {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 3px;
  background: var(--gradient-gold);
  border-radius: 3px;
  transition: width 0.5s ease;
}

.stat-3d-item:hover .stat-3d-bar {
  width: 60%;
}

/* ========================================
   系统要求表格
   ======================================== */
.system-requirements {
  background: rgba(18, 18, 26, 0.65);
  border: var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.requirements-table {
  width: 100%;
  border-collapse: collapse;
}

.requirements-table th,
.requirements-table td {
  padding: var(--space-lg);
  text-align: left;
  border-bottom: 1px solid rgba(194, 181, 155, 0.1);
}

.requirements-table th {
  background: rgba(194, 181, 155, 0.1);
  color: var(--primary);
  font-weight: 600;
}

.requirements-table td {
  color: var(--text-secondary);
}

.requirements-table tr:last-child td {
  border-bottom: none;
}

.requirements-table tr:hover td {
  background: rgba(194, 181, 155, 0.05);
}

/* ========================================
   联系表单
   ======================================== */
.contact-form-wrapper {
  background: rgba(18, 18, 26, 0.65);
  border: var(--border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.contact-info-wrapper {
  background: rgba(18, 18, 26, 0.65);
  border: var(--border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  height: 100%;
}

.form-group-3d {
  margin-bottom: var(--space-lg);
}

.form-label-3d {
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
  display: block;
  font-weight: 500;
}

.form-control-3d {
  background: rgba(194, 181, 155, 0.05);
  border: var(--border-light);
  color: var(--text-primary);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  width: 100%;
  transition: all var(--transition-normal);
  font-family: inherit;
}

.form-control-3d:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 20px rgba(194, 181, 155, 0.1);
  background: rgba(194, 181, 155, 0.1);
}

.form-control-3d::placeholder {
  color: var(--text-muted);
}

textarea.form-control-3d {
  resize: vertical;
  min-height: 120px;
}

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.contact-info-item-3d {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.contact-info-icon-3d {
  width: 50px;
  height: 50px;
  background: rgba(194, 181, 155, 0.1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  border: var(--border-light);
  flex-shrink: 0;
}

.contact-info-icon-3d svg {
  width: 24px;
  height: 24px;
  stroke: var(--primary);
}

.contact-info-content-3d h5 {
  color: var(--primary);
  font-size: 1rem;
  margin-bottom: var(--space-xs);
}

.contact-info-content-3d p {
  color: var(--text-secondary);
  margin: 0;
  font-size: 0.95rem;
}

/* 提示框 */
.alert-3d {
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.alert-success-3d {
  background: rgba(82, 196, 26, 0.1);
  border: 1px solid rgba(82, 196, 26, 0.3);
  color: var(--success);
}

.alert-error-3d {
  background: rgba(245, 34, 45, 0.1);
  border: 1px solid rgba(245, 34, 45, 0.3);
  color: var(--error);
}

/* ========================================
   面包屑导航
   ======================================== */
.breadcrumb-3d {
  background: rgba(194, 181, 155, 0.05);
  border: var(--border-light);
  border-radius: var(--radius-full);
  padding: var(--space-sm) var(--space-lg);
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
}

.breadcrumb-3d a {
  color: var(--text-tertiary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.breadcrumb-3d a:hover {
  color: var(--primary);
}

.breadcrumb-3d .separator {
  color: var(--primary);
}

.breadcrumb-3d .current {
  color: var(--primary);
  font-weight: 600;
}

/* ========================================
   分页
   ======================================== */
.pagination-3d {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  margin-top: var(--space-3xl);
}

.pagination-3d a,
.pagination-3d span {
  width: 45px;
  height: 45px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(18, 18, 26, 0.65);
  border: var(--border-light);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  text-decoration: none;
  transition: all var(--transition-normal);
  font-weight: 500;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.pagination-3d a:hover {
  background: rgba(194, 181, 155, 0.1);
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-3px);
}

.pagination-3d .active {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--bg-primary);
}

/* ========================================
   页脚
   ======================================== */
.site-footer {
  background: var(--bg-secondary);
  border-top: var(--border-light);
  padding: var(--space-3xl) 0 var(--space-xl);
  position: relative;
}

.footer-3d-decoration {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-gold);
  box-shadow: var(--shadow-gold);
}

.footer-brand {
  text-align: left;
}

.footer-logo {
  height: 50px;
  margin-bottom: var(--space-md);
  filter: drop-shadow(0 5px 15px rgba(194, 181, 155, 0.3));
}

.footer-title {
  font-family: var(--font-display);
  color: var(--primary);
  font-size: 1.5rem;
  margin-bottom: var(--space-md);
}

.footer-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.8;
}

.footer-heading {
  color: var(--primary);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--space-lg);
  text-transform: uppercase;
  letter-spacing: 1px;
  position: relative;
  display: inline-block;
}

.footer-heading::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 40px;
  height: 2px;
  background: var(--gradient-gold);
  border-radius: 1px;
}

.footer-links {
  list-style: none;
  padding: 0;
}

.footer-links li {
  margin-bottom: var(--space-sm);
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: all var(--transition-normal);
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
}

.footer-links a::before {
  content: '›';
  color: var(--primary);
  font-size: 1.2rem;
  transition: transform var(--transition-fast);
}

.footer-links a:hover {
  color: var(--primary);
  padding-left: var(--space-xs);
}

.footer-links a:hover::before {
  transform: translateX(5px);
}

.footer-contact p {
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.footer-social {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.social-icon {
  width: 45px;
  height: 45px;
  border: var(--border-medium);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.social-icon::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--gradient-gold);
  transition: left var(--transition-normal);
  z-index: -1;
}

.social-icon svg {
  width: 20px;
  height: 20px;
  transition: transform var(--transition-fast);
}

.social-icon:hover {
  color: var(--bg-primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow-gold);
}

.social-icon:hover::before {
  left: 0;
}

.social-icon:hover svg {
  transform: scale(1.2);
}

.footer-divider {
  border-color: rgba(194, 181, 155, 0.1);
  margin: var(--space-2xl) 0 var(--space-xl);
}

.footer-bottom {
  color: var(--text-tertiary);
  font-size: 0.9rem;
}

.icp-link {
  color: var(--text-tertiary);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  transition: color var(--transition-fast);
}

.icp-link:hover {
  color: var(--primary);
}

/* ========================================
   SVG图标尺寸
   ======================================== */
.icon-3d {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.icon-3d-sm {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.icon-3d-xs {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

.icon-3d-lg {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}

svg {
  display: inline-block;
  vertical-align: middle;
}

/* ========================================
   FAQ样式
   ======================================== */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.faq-item {
  background: rgba(18, 18, 26, 0.65);
  border: var(--border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: all var(--transition-normal);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.faq-item:hover {
  border-color: rgba(194, 181, 155, 0.3);
  transform: translateX(10px);
}

.faq-question {
  font-size: 1.1rem;
  color: var(--text-primary);
  font-weight: 600;
  margin-bottom: var(--space-sm);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.faq-question svg {
  stroke: var(--primary);
  flex-shrink: 0;
  width: 24px;
  height: 24px;
}

.faq-answer {
  color: var(--text-secondary);
  line-height: 1.7;
  padding-left: 32px;
}

/* ========================================
   快速链接卡片
   ======================================== */
.quick-link-card {
  background: rgba(18, 18, 26, 0.65);
  border: var(--border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  text-align: center;
  text-decoration: none;
  display: block;
  transition: all var(--transition-slow);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.quick-link-card:hover {
  transform: translateY(-10px);
  border-color: rgba(194, 181, 155, 0.3);
  box-shadow: var(--shadow-lg);
}

.quick-link-icon {
  width: 70px;
  height: 70px;
  background: rgba(194, 181, 155, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-lg);
  border: var(--border-medium);
  transition: all var(--transition-normal);
}

.quick-link-card:hover .quick-link-icon {
  background: rgba(194, 181, 155, 0.2);
  border-color: var(--primary);
  transform: scale(1.1);
}

.quick-link-icon svg {
  width: 32px;
  height: 32px;
  stroke: var(--primary);
}

.quick-link-card h4 {
  color: var(--text-primary);
  font-size: 1.2rem;
  margin-bottom: var(--space-sm);
}

.quick-link-card p {
  color: var(--text-secondary);
  margin: 0;
  font-size: 0.95rem;
}

/* ========================================
   玩家评价卡片
   ======================================== */
.testimonial-card {
  background: rgba(18, 18, 26, 0.65);
  border: var(--border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--transition-slow);
  height: 100%;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.testimonial-card:hover {
  transform: translateY(-10px);
  border-color: rgba(194, 181, 155, 0.3);
  box-shadow: var(--shadow-lg);
}

.testimonial-rating {
  display: flex;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
}

.testimonial-rating svg {
  width: 20px;
  height: 20px;
  fill: var(--primary);
}

.testimonial-text {
  color: var(--text-secondary);
  line-height: 1.8;
  font-style: italic;
  margin-bottom: var(--space-lg);
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.author-avatar {
  width: 50px;
  height: 50px;
  background: var(--gradient-gold);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--bg-primary);
  font-weight: 700;
  font-size: 1.2rem;
}

.author-name {
  color: var(--text-primary);
  font-weight: 600;
}

.author-title {
  color: var(--text-tertiary);
  font-size: 0.85rem;
}

/* ========================================
   职业展示
   ======================================== */
.class-showcase {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xl);
}

.class-showcase-item {
  display: flex;
  align-items: center;
  gap: var(--space-2xl);
  background: rgba(18, 18, 26, 0.65);
  border: var(--border-light);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  transition: all var(--transition-slow);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.class-showcase-item:hover {
  transform: translateY(-10px);
  border-color: rgba(194, 181, 155, 0.3);
  box-shadow: var(--shadow-lg);
}

.class-showcase-item.reverse {
  flex-direction: row-reverse;
}

.class-showcase-icon {
  width: 120px;
  height: 120px;
  background: rgba(194, 181, 155, 0.1);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  border: var(--border-medium);
  flex-shrink: 0;
}

.class-showcase-icon svg {
  width: 60px;
  height: 60px;
  stroke: var(--primary);
}

.class-showcase-content {
  flex: 1;
}

.class-showcase-content h3 {
  font-size: 1.8rem;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
}

.class-showcase-content p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-md);
}

.class-features {
  list-style: none;
  padding: 0;
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.class-features li {
  background: rgba(194, 181, 155, 0.1);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-full);
  color: var(--primary);
  font-size: 0.9rem;
}

/* ========================================
   截图展示
   ======================================== */
.screenshot-card {
  background: rgba(18, 18, 26, 0.65);
  border: var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-slow);
  height: 100%;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.screenshot-card:hover {
  transform: translateY(-10px);
  border-color: rgba(194, 181, 155, 0.3);
  box-shadow: var(--shadow-lg);
}

.main-screenshot {
  height: 100%;
  min-height: 400px;
}

.screenshot-placeholder {
  height: 100%;
  min-height: 200px;
  background: linear-gradient(135deg, rgba(194, 181, 155, 0.1), rgba(194, 181, 155, 0.05));
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-tertiary);
  gap: var(--space-md);
}

.screenshot-placeholder svg {
  width: 48px;
  height: 48px;
  stroke: var(--primary);
  opacity: 0.5;
}

.main-screenshot .screenshot-placeholder svg {
  width: 64px;
  height: 64px;
}

.screenshot-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.screenshot-card:hover .screenshot-image {
  transform: scale(1.05);
}

.screenshot-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
  padding: var(--space-lg);
  z-index: 2;
}

.screenshot-label {
  color: var(--text-primary);
  font-weight: 600;
  font-size: 1rem;
}

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 991px) {
  .hero-title {
    font-size: 2.5rem;
  }

  .hero-content {
    padding: 30px 40px;
    margin: 0 20px;
  }

  .section-title-3d {
    font-size: 2rem;
  }

  .hero-badges {
    flex-direction: column;
    align-items: center;
  }

  .hero-cta {
    flex-direction: column;
    align-items: center;
  }

  .btn-3d {
    width: 100%;
    max-width: 300px;
  }

  .class-showcase-item,
  .class-showcase-item.reverse {
    flex-direction: column;
    text-align: center;
  }

  .class-features {
    justify-content: center;
  }
  
  .stats-3d-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 2rem;
  }

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

  .hero-content {
    padding: 25px 30px;
    margin: 0 15px;
    border-radius: 20px;
  }

  .section-title-3d {
    font-size: 1.5rem;
  }
  
  .stats-3d-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-brand {
    text-align: center;
  }
  
  .footer-social {
    justify-content: center;
  }
  
  .contact-info-item-3d {
    flex-direction: column;
    text-align: center;
  }
}

/* ========================================
   动画效果
   ======================================== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

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

@keyframes glow {
  0%, 100% { box-shadow: 0 0 20px rgba(194, 181, 155, 0.3); }
  50% { box-shadow: 0 0 40px rgba(194, 181, 155, 0.6); }
}

.animate-fadeInUp {
  animation: fadeInUp 0.6s ease forwards;
}

.animate-fadeIn {
  animation: fadeIn 0.6s ease forwards;
}

.animate-scaleIn {
  animation: scaleIn 0.6s ease forwards;
}

/* ========================================
   3D容器 - 用于G6图表
   ======================================== */
.g6-container {
  background: var(--bg-card);
  border: var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  backdrop-filter: blur(10px);
}

#class-galaxy-3d,
#world-map-3d {
  width: 100%;
  min-height: 500px;
}

/* ========================================
   加载动画
   ======================================== */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.5s ease;
}

.loading-spinner {
  width: 60px;
  height: 60px;
  border: 3px solid rgba(194, 181, 155, 0.2);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* ========================================
   辅助类
   ======================================== */
.text-gradient {
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.bg-glass {
  background: var(--bg-glass);
  backdrop-filter: blur(10px);
}

.border-glow {
  border-color: rgba(194, 181, 155, 0.5);
  box-shadow: 0 0 20px rgba(194, 181, 155, 0.1);
}

.glow-effect {
  box-shadow: var(--shadow-gold);
}

/* 隐藏元素 */
.hidden {
  display: none !important;
}

.invisible {
  visibility: hidden;
}

/* 文字截断 */
.text-truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* 多行截断 */
.text-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.text-clamp-3 {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ========================================
   视频卡片样式
   ======================================== */
.video-card-3d {
  background: var(--bg-card);
  border: var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-slow);
  backdrop-filter: blur(10px);
  cursor: pointer;
  height: 100%;
}

.video-card-3d:hover {
  transform: translateY(-15px) rotateX(5deg);
  border-color: rgba(194, 181, 155, 0.3);
  box-shadow: 
    var(--shadow-lg),
    0 0 40px rgba(194, 181, 155, 0.1);
}

.video-thumbnail {
  position: relative;
  height: 180px;
  background: linear-gradient(135deg, rgba(194, 181, 155, 0.15), rgba(194, 181, 155, 0.05));
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background-size: cover;
  background-position: center;
}

.video-thumbnail img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

.video-thumbnail::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(to bottom, rgba(0,0,0,0.1) 0%, rgba(0,0,0,0.3) 100%);
  z-index: 1;
}

.video-thumbnail::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  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%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
  opacity: 0.03;
  z-index: 1;
}

.video-play-icon {
  width: 70px;
  height: 70px;
  background: rgba(194, 181, 155, 0.15);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 2;
  transition: all var(--transition-normal);
  box-shadow: 
    0 8px 32px rgba(0, 0, 0, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(194, 181, 155, 0.3);
}

.video-card-3d:hover .video-play-icon {
  transform: scale(1.1);
  background: rgba(194, 181, 155, 0.25);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  box-shadow: 
    0 12px 40px rgba(194, 181, 155, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.3);
  border-color: rgba(194, 181, 155, 0.5);
}

.video-play-icon svg {
  width: 28px;
  height: 28px;
  fill: var(--primary);
  margin-left: 4px;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
}

.video-overlay {
  position: absolute;
  bottom: 12px;
  right: 12px;
  background: rgba(0, 0, 0, 0.7);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  z-index: 2;
}

.video-duration {
  color: var(--text-primary);
  font-size: 0.8rem;
  font-weight: 500;
}

.video-info {
  padding: var(--space-lg);
}

.video-title {
  color: var(--text-primary);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--space-xs);
  line-height: 1.4;
}

.video-desc {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
  margin: 0;
}

/* ========================================
   视频模态框
   ======================================== */
.video-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.9);
  backdrop-filter: blur(10px);
  z-index: 10000;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
}

.video-modal.active {
  display: flex;
}

.video-modal-content {
  background: var(--bg-card);
  border: var(--border-medium);
  border-radius: var(--radius-lg);
  max-width: 900px;
  width: 100%;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.video-modal-close {
  position: absolute;
  top: 15px;
  right: 20px;
  font-size: 2rem;
  color: var(--text-primary);
  cursor: pointer;
  z-index: 10;
  transition: color var(--transition-fast);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.5);
  border-radius: 50%;
}

.video-modal-close:hover {
  color: var(--primary);
  background: rgba(194, 181, 155, 0.2);
}

.video-modal-title {
  padding: var(--space-lg) var(--space-xl);
  margin: 0;
  color: var(--text-primary);
  font-size: 1.3rem;
  font-weight: 600;
  background: var(--bg-secondary);
  border-bottom: var(--border-light);
}

.video-modal video {
  width: 100%;
  height: auto;
  max-height: 70vh;
  display: block;
}

/* 视频卡片响应式 */
@media (max-width: 991px) {
  .video-thumbnail {
    height: 160px;
  }
  
  .video-play-icon {
    width: 60px;
    height: 60px;
  }
  
  .video-play-icon svg {
    width: 24px;
    height: 24px;
  }
}

@media (max-width: 768px) {
  .video-thumbnail {
    height: 140px;
  }
  
  .video-modal-content {
    margin: var(--space-md);
  }
  
  .video-modal-title {
    font-size: 1.1rem;
    padding: var(--space-md);
  }
}

/* ========================================
   金牛故事 - 时间轴样式 (重构版)
   ======================================== */

/* 故事简介 */
.story-intro {
  display: flex;
  align-items: center;
  gap: var(--space-3xl);
  padding: var(--space-2xl);
  background: var(--bg-card);
  border: var(--border-light);
  border-radius: var(--radius-xl);
  backdrop-filter: blur(10px);
}

.story-intro-content {
  flex: 1;
}

.story-intro-title {
  font-family: var(--font-display);
  font-size: 2.5rem;
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-lg);
}

.story-intro-text {
  color: var(--text-secondary);
  font-size: 1.1rem;
  line-height: 1.8;
}

.story-intro-visual {
  flex-shrink: 0;
}

.cosmic-sphere {
  width: 200px;
  height: 200px;
  background: radial-gradient(circle at 30% 30%, var(--primary-light), var(--primary-dark));
  border-radius: 50%;
  position: relative;
  box-shadow: 
    0 0 60px rgba(194, 181, 155, 0.4),
    inset -20px -20px 40px rgba(0, 0, 0, 0.3);
  animation: sphereRotate 20s linear infinite;
}

.cosmic-sphere::before {
  content: '';
  position: absolute;
  top: 10%;
  left: 15%;
  width: 30%;
  height: 20%;
  background: radial-gradient(ellipse, rgba(255, 255, 255, 0.4), transparent);
  border-radius: 50%;
  filter: blur(5px);
}

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

/* 时间轴容器 */
.timeline-container {
  position: relative;
  padding: var(--space-xl) 0;
}

/* 时间轴线 */
.timeline-line {
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(to bottom, 
    transparent 0%,
    var(--primary) 5%,
    var(--primary) 95%,
    transparent 100%
  );
  transform: translateX(-50%);
  box-shadow: 0 0 20px rgba(194, 181, 155, 0.3);
}

/* 时间轴项目 - 使用Grid布局 */
.timeline-item {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: start;
  margin-bottom: var(--space-3xl);
  position: relative;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

/* 时间轴标记 - 中间列 */
.timeline-marker {
  display: flex;
  flex-direction: column;
  align-items: center;
  z-index: 10;
  padding: 0 var(--space-lg);
}

.timeline-year {
  background: var(--gradient-gold);
  color: var(--bg-primary);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 0.9rem;
  white-space: nowrap;
  margin-bottom: var(--space-sm);
  box-shadow: var(--shadow-gold);
}

.timeline-dot {
  width: 24px;
  height: 24px;
  background: var(--bg-primary);
  border: 4px solid var(--primary);
  border-radius: 50%;
  box-shadow: 0 0 20px rgba(194, 181, 155, 0.5);
  transition: all var(--transition-normal);
}

.timeline-dot-highlight {
  width: 32px;
  height: 32px;
  border-width: 6px;
  background: var(--primary);
  animation: pulse 2s ease-in-out infinite;
}

.timeline-item:hover .timeline-dot {
  transform: scale(1.3);
  box-shadow: 0 0 30px rgba(194, 181, 155, 0.8);
}

/* 时间轴内容 */
.timeline-content {
  padding: 0 var(--space-xl);
}

/* 奇数项 - 内容在左侧 */
.timeline-item:nth-child(odd) .timeline-content {
  grid-column: 1;
  text-align: right;
}

.timeline-item:nth-child(odd) .timeline-marker {
  grid-column: 2;
}

.timeline-item:nth-child(odd) .timeline-content-spacer {
  grid-column: 3;
}

/* 偶数项 - 内容在右侧 */
.timeline-item:nth-child(even) .timeline-content {
  grid-column: 3;
  text-align: left;
}

.timeline-item:nth-child(even) .timeline-marker {
  grid-column: 2;
}

.timeline-item:nth-child(even) .timeline-content-spacer {
  grid-column: 1;
}

/* 时间轴卡片 */
.timeline-card {
  background: rgba(18, 18, 26, 0.65);
  border: var(--border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--transition-slow);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  position: relative;
  overflow: hidden;
  text-align: left;
}

.timeline-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(194, 181, 155, 0.05), transparent);
  transition: left 0.8s ease;
}

.timeline-card:hover::before {
  left: 100%;
}

.timeline-card:hover {
  transform: translateY(-10px);
  border-color: rgba(194, 181, 155, 0.3);
  box-shadow: 
    var(--shadow-lg),
    0 0 40px rgba(194, 181, 155, 0.1);
}

.timeline-card-highlight {
  border-color: var(--primary);
  box-shadow: var(--shadow-gold);
}

.timeline-card-highlight:hover {
  box-shadow: 
    var(--shadow-lg),
    var(--shadow-gold-lg);
}

/* 时间轴图标 */
.timeline-icon {
  width: 60px;
  height: 60px;
  background: rgba(194, 181, 155, 0.1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  border: var(--border-medium);
  margin-bottom: var(--space-md);
  transition: all var(--transition-normal);
}

.timeline-card:hover .timeline-icon {
  background: rgba(194, 181, 155, 0.2);
  border-color: var(--primary);
  transform: rotateY(360deg);
}

.timeline-icon svg {
  width: 30px;
  height: 30px;
  stroke: var(--primary);
}

/* 时间轴标题 */
.timeline-title {
  font-size: 1.4rem;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
  font-weight: 600;
}

.timeline-period {
  color: var(--primary);
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: var(--space-md);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.timeline-desc {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-md);
}

/* 时间轴标签 */
.timeline-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.timeline-item:nth-child(odd) .timeline-tags {
  justify-content: flex-end;
}

.timeline-tag {
  background: rgba(194, 181, 155, 0.1);
  border: var(--border-light);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  font-size: 0.85rem;
  transition: all var(--transition-fast);
}

.timeline-tag:hover {
  background: rgba(194, 181, 155, 0.2);
  border-color: var(--primary);
  color: var(--primary);
}

.timeline-tag.highlight {
  background: rgba(194, 181, 155, 0.2);
  border-color: var(--primary);
  color: var(--primary);
}

/* 时间轴CTA */
.timeline-cta {
  margin-top: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: var(--border-light);
}

/* 故事章节卡片 */
.story-chapter-card {
  background: rgba(18, 18, 26, 0.65);
  border: var(--border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--transition-slow);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  height: 100%;
  position: relative;
  overflow: hidden;
}

.story-chapter-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(194, 181, 155, 0.05), transparent);
  transition: left 0.8s ease;
}

.story-chapter-card:hover::before {
  left: 100%;
}

.story-chapter-card:hover {
  transform: translateY(-10px);
  border-color: rgba(194, 181, 155, 0.3);
  box-shadow: var(--shadow-lg);
}

.chapter-number {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 900;
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.3;
  position: absolute;
  top: var(--space-md);
  right: var(--space-lg);
  line-height: 1;
}

.chapter-title {
  font-size: 1.3rem;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
  font-weight: 600;
  padding-right: 60px;
}

.chapter-desc {
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-md);
}

.chapter-era {
  color: var(--primary);
  font-size: 0.85rem;
  font-weight: 500;
}

/* 时间轴响应式 */
@media (max-width: 991px) {
  .story-intro {
    flex-direction: column;
    text-align: center;
  }
  
  .cosmic-sphere {
    width: 150px;
    height: 150px;
  }
  
  .story-intro-title {
    font-size: 2rem;
  }
  
  .timeline-line {
    left: 30px;
  }
  
  .timeline-item {
    grid-template-columns: auto 1fr;
    gap: var(--space-md);
  }
  
  .timeline-item:nth-child(odd) .timeline-content,
  .timeline-item:nth-child(even) .timeline-content {
    grid-column: 2;
    text-align: left;
    padding: 0;
  }
  
  .timeline-item:nth-child(odd) .timeline-marker,
  .timeline-item:nth-child(even) .timeline-marker {
    grid-column: 1;
    padding: 0;
  }
  
  .timeline-year {
    font-size: 0.75rem;
    padding: var(--space-xs) var(--space-sm);
  }
  
  .timeline-item:nth-child(odd) .timeline-tags {
    justify-content: flex-start;
  }
}

@media (max-width: 768px) {
  .timeline-line {
    left: 20px;
  }
  
  .timeline-year {
    font-size: 0.7rem;
  }
  
  .timeline-title {
    font-size: 1.2rem;
  }
  
  .chapter-number {
    font-size: 2.5rem;
  }
}