/* 基础重置和变量 */
:root {
  --primary-dark: #0a0b0f;
  --secondary-dark: #1a1b23;
  --accent-dark: #2a2d3a;
  --gold: #ffd700;
  --gold-light: #ffed4e;
  --gold-dark: #b8860b;
  --blue: #00d4ff;
  --blue-light: #4df4ff;
  --blue-dark: #0099cc;
  --white: #ffffff;
  --gray-light: #e5e7eb;
  --gray: #9ca3af;
  --gray-dark: #6b7280;
  --text-primary: #ffffff;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --border-radius: 12px;
  --border-radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --glow: 0 0 20px rgba(255, 215, 0, 0.3);
  --glow-blue: 0 0 20px rgba(0, 212, 255, 0.3);
}

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

html {
  scroll-behavior: smooth;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* 导航栏 */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(10, 11, 15, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 215, 0, 0.1);
  z-index: 1000;
  transition: var(--transition);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 20px;
}

.nav-logo {
  display: flex;
  align-items: center;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--gold);
  text-decoration: none;
}

.nav-logo i {
  margin-right: 8px;
  font-size: 1.8rem;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

.nav-link:hover {
  color: var(--gold);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), var(--blue));
  transition: var(--transition);
}

.nav-link:hover::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
}

.bar {
  width: 25px;
  height: 3px;
  background: var(--gold);
  margin: 3px 0;
  transition: var(--transition);
}

/* 主横幅 */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--secondary-dark) 50%, var(--accent-dark) 100%);
  z-index: -2;
}

.hero-background::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url('../images/trading_charts.jpg') center/cover;
  opacity: 0.1;
  z-index: -1;
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  width: 100%;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  min-height: 80vh;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.highlight {
  background: linear-gradient(90deg, var(--gold), var(--blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  line-height: 1.8;
}

.hero-stats {
  display: flex;
  gap: 2rem;
  margin-bottom: 2rem;
}

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

.stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  color: var(--gold);
}

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

.hero-buttons {
  display: flex;
  gap: 1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  padding: 1rem 2rem;
  border: none;
  border-radius: var(--border-radius);
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  font-size: 1rem;
}

.btn i {
  margin-right: 8px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--gold), var(--gold-dark));
  color: var(--primary-dark);
  box-shadow: var(--glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--glow), var(--shadow-lg);
}

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

.btn-secondary:hover {
  background: var(--blue);
  color: var(--primary-dark);
  box-shadow: var(--glow-blue);
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.chart-container {
  width: 100%;
  max-width: 500px;
  height: 350px;
  background: rgba(42, 45, 58, 0.5);
  border-radius: var(--border-radius-lg);
  border: 1px solid rgba(255, 215, 0, 0.2);
  padding: 20px;
  backdrop-filter: blur(10px);
}

/* 策略部分 */
.strategies {
  padding: 6rem 0;
  background: var(--secondary-dark);
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  background: linear-gradient(90deg, var(--gold), var(--blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.strategies-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.strategy-card {
  background: rgba(42, 45, 58, 0.8);
  border-radius: var(--border-radius-lg);
  padding: 2rem;
  border: 1px solid rgba(255, 215, 0, 0.1);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.strategy-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(255, 215, 0, 0.05), rgba(0, 212, 255, 0.05));
  opacity: 0;
  transition: var(--transition);
}

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

.strategy-card:hover {
  transform: translateY(-10px);
  border-color: var(--gold);
  box-shadow: var(--glow);
}

.strategy-card.featured {
  border-color: var(--blue);
  box-shadow: var(--glow-blue);
}

.featured-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: linear-gradient(135deg, var(--blue), var(--blue-dark));
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
}

.strategy-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--gold), var(--gold-dark));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.strategy-icon i {
  font-size: 1.8rem;
  color: var(--primary-dark);
}

.strategy-name {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--gold);
}

.strategy-description {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.strategy-features {
  margin-bottom: 2rem;
}

.feature {
  display: flex;
  align-items: center;
  margin-bottom: 0.8rem;
  color: var(--text-secondary);
}

.feature i {
  color: var(--blue);
  margin-right: 8px;
  width: 16px;
}

.strategy-performance {
  border-top: 1px solid rgba(255, 215, 0, 0.2);
  padding-top: 1.5rem;
}

.performance-item {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.8rem;
}

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

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

.value.gold {
  color: var(--gold);
  font-weight: 700;
}

/* 定价部分 */
.pricing {
  padding: 6rem 0;
  background: var(--primary-dark);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.pricing-card {
  background: var(--secondary-dark);
  border-radius: var(--border-radius-lg);
  padding: 2rem;
  border: 2px solid rgba(255, 215, 0, 0.1);
  transition: var(--transition);
  position: relative;
  text-align: center;
}

.pricing-card:hover {
  transform: translateY(-10px);
  border-color: var(--gold);
  box-shadow: var(--glow);
}

.pricing-card.featured {
  border-color: var(--blue);
  box-shadow: var(--glow-blue);
  transform: scale(1.05);
}

.popular-badge {
  position: absolute;
  top: -15px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--blue), var(--blue-dark));
  color: white;
  padding: 0.5rem 2rem;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 600;
}

.pricing-header {
  margin-bottom: 2rem;
}

.pricing-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--gold);
}

.pricing-price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  margin-bottom: 1rem;
}

.currency {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-right: 0.5rem;
}

.amount {
  font-size: 3rem;
  font-weight: 800;
  color: var(--gold);
}

.period {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-left: 0.5rem;
}

.pricing-features {
  list-style: none;
  margin-bottom: 2rem;
  text-align: left;
}

.pricing-features li {
  display: flex;
  align-items: center;
  margin-bottom: 1rem;
  padding: 0.5rem 0;
}

.pricing-features i {
  margin-right: 12px;
  width: 16px;
  font-size: 0.9rem;
}

.pricing-features .fa-check {
  color: var(--success);
}

.pricing-features .fa-times {
  color: var(--text-muted);
}

.pricing-btn {
  width: 100%;
  padding: 1rem 2rem;
  background: linear-gradient(135deg, var(--gold), var(--gold-dark));
  color: var(--primary-dark);
  border: none;
  border-radius: var(--border-radius);
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition);
}

.pricing-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--glow);
}

/* 历史表现部分 */
.performance {
  padding: 6rem 0;
  background: var(--secondary-dark);
}

.performance-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 4rem;
  align-items: center;
}

.performance-chart {
  background: rgba(42, 45, 58, 0.5);
  border-radius: var(--border-radius-lg);
  padding: 2rem;
  border: 1px solid rgba(255, 215, 0, 0.2);
  height: 400px;
}

.performance-stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.stat-card {
  background: rgba(42, 45, 58, 0.8);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  border: 1px solid rgba(255, 215, 0, 0.1);
  display: flex;
  align-items: center;
  transition: var(--transition);
}

.stat-card:hover {
  border-color: var(--gold);
  box-shadow: var(--glow);
}

.stat-icon {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--gold), var(--gold-dark));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 1rem;
}

.stat-icon i {
  color: var(--primary-dark);
  font-size: 1.2rem;
}

.stat-info h4 {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gold);
}

/* 联系我们部分 */
.contact {
  padding: 6rem 0;
  background: var(--primary-dark);
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.contact-info h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--gold);
}

.contact-info p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  line-height: 1.7;
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.contact-method {
  display: flex;
  align-items: center;
  padding: 1rem;
  background: rgba(42, 45, 58, 0.5);
  border-radius: var(--border-radius);
  border: 1px solid rgba(255, 215, 0, 0.1);
  transition: var(--transition);
}

.contact-method:hover {
  border-color: var(--gold);
  box-shadow: var(--glow);
}

.contact-method i {
  font-size: 1.5rem;
  color: var(--blue);
  margin-right: 1rem;
  width: 30px;
}

.contact-method h4 {
  font-size: 1rem;
  color: var(--text-primary);
  margin-bottom: 0.2rem;
}

.contact-method span {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.contact-form {
  background: rgba(42, 45, 58, 0.8);
  border-radius: var(--border-radius-lg);
  padding: 2rem;
  border: 1px solid rgba(255, 215, 0, 0.1);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 1rem;
  background: rgba(26, 27, 35, 0.8);
  border: 1px solid rgba(255, 215, 0, 0.2);
  border-radius: var(--border-radius);
  color: var(--text-primary);
  font-size: 1rem;
  transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--gold);
  box-shadow: var(--glow);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

/* 页脚 */
.footer {
  background: var(--secondary-dark);
  padding: 3rem 0 1rem;
  border-top: 1px solid rgba(255, 215, 0, 0.1);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-logo {
  display: flex;
  align-items: center;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--gold);
  margin-bottom: 1rem;
}

.footer-logo i {
  margin-right: 8px;
  font-size: 1.8rem;
}

.footer-section p {
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 1rem;
}

.footer-section h4 {
  color: var(--gold);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.footer-section ul {
  list-style: none;
}

.footer-section ul li {
  margin-bottom: 0.5rem;
}

.footer-section ul li a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition);
}

.footer-section ul li a:hover {
  color: var(--gold);
}

.social-links {
  display: flex;
  gap: 1rem;
}

.social-links a {
  width: 40px;
  height: 40px;
  background: rgba(255, 215, 0, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold);
  text-decoration: none;
  transition: var(--transition);
}

.social-links a:hover {
  background: var(--gold);
  color: var(--primary-dark);
  transform: translateY(-2px);
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 215, 0, 0.1);
  color: var(--text-muted);
}

/* 响应式设计 */
@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    left: -100%;
    top: 70px;
    flex-direction: column;
    background: rgba(10, 11, 15, 0.98);
    width: 100%;
    text-align: center;
    transition: var(--transition);
    backdrop-filter: blur(20px);
    padding: 2rem 0;
  }

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

  .nav-toggle {
    display: flex;
  }

  .hero-content {
    grid-template-columns: 1fr;
    gap: 2rem;
    text-align: center;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .hero-stats {
    justify-content: center;
  }

  .hero-buttons {
    justify-content: center;
    flex-wrap: wrap;
  }

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

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

  .pricing-card.featured {
    transform: none;
  }

  .performance-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .contact-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

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

  .container {
    padding: 0 15px;
  }
}

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

  .hero-stats {
    flex-direction: column;
    gap: 1rem;
  }

  .btn {
    padding: 0.8rem 1.5rem;
    font-size: 0.9rem;
  }

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

  .strategy-card {
    padding: 1.5rem;
  }

  .pricing-card {
    padding: 1.5rem;
  }

  .contact-form {
    padding: 1.5rem;
  }
}

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

@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 20px rgba(255, 215, 0, 0.3);
  }
  50% {
    box-shadow: 0 0 30px rgba(255, 215, 0, 0.6);
  }
}

.strategy-card,
.pricing-card,
.stat-card {
  animation: fadeInUp 0.6s ease-out;
}

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

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

::-webkit-scrollbar-thumb {
  background: linear-gradient(var(--gold), var(--gold-dark));
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(var(--gold-light), var(--gold));
}