:root {
  /* Color Scheme - Pink/Purple/Blue gradient */
  --color-primary: #FF3CAC;
  --color-secondary: #784BA0;
  --color-tertiary: #2B86C5;
  --color-accent: #FF6B81;
  --color-background: #0F0F1A;
  --color-card-bg: #1A1A2E;
  --color-text: #FFFFFF;
  --color-text-secondary: rgba(255, 255, 255, 0.8);
  --color-text-tertiary: rgba(255, 255, 255, 0.6);
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-xxl: 5rem;
  
  /* Border Radius */
  --border-radius-sm: 0.25rem;
  --border-radius-md: 0.5rem;
  --border-radius-lg: 1rem;
  --border-radius-xl: 2rem;
  --border-radius-full: 9999px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
  background-color: var(--color-background);
  color: var(--color-text);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  margin-bottom: var(--spacing-md);
  font-weight: 700;
  line-height: 1.2;
}

h1 {
  font-size: 2.5rem;
}

h2 {
  font-size: 2rem;
}

h3 {
  font-size: 1.5rem;
}

p {
  margin-bottom: var(--spacing-md);
}

a {
  color: var(--color-text);
  text-decoration: none;
  transition: all 0.3s ease;
}

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

.text-gradient {
  background: linear-gradient(to right, var(--color-primary), var(--color-secondary), var(--color-tertiary));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  display: inline;
}

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

/* Layout */
.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-md) 0;
}

section {
  padding: var(--spacing-xl) 0;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background-color: rgba(15, 15, 26, 0.9);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.site-title {
  font-size: 1.2rem;
  font-weight: 700;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text);
  font-size: 1.5rem;
  cursor: pointer;
}

.nav-list {
  display: flex;
  gap: var(--spacing-lg);
  list-style: none;
}

.nav-link {
  font-weight: 500;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius-sm);
}

.nav-link:hover, .nav-link.active {
  color: var(--color-primary);
  background-color: rgba(255, 60, 172, 0.1);
}

/* Hero */
.hero {
  padding-top: calc(var(--spacing-xxl) + 3rem);
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 50% 50%, rgba(255, 60, 172, 0.15), transparent 60%);
  z-index: -1;
}

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

.hero-title {
  font-size: 2.8rem;
  margin-bottom: var(--spacing-md);
}

.hero-subtitle {
  font-size: 1.3rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
  min-height: 1.3em;
}

.hero-btns {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

/* Button */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius-full);
  font-weight: 600;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(45deg, var(--color-primary), var(--color-secondary), var(--color-tertiary));
  background-size: 200% 200%;
  color: white;
  border: none;
  box-shadow: 0 4px 15px rgba(255, 60, 172, 0.4);
}

.btn-primary:hover {
  background-position: 100% 0;
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(255, 60, 172, 0.6);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--color-text);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-3px);
}

/* Features */
.features {
  background-color: var(--color-background);
  position: relative;
}

.features h2 {
  margin-bottom: var(--spacing-sm);
}

.features > .container > p {
  max-width: 600px;
  margin: 0 auto var(--spacing-xl);
  color: var(--color-text-secondary);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

.feature-card {
  background: linear-gradient(145deg, #1A1A2E, #16162B);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  transition: all 0.3s ease;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(120, 75, 160, 0.3);
}

.feature-icon {
  width: 100px;
  height: 100px;
  margin-bottom: var(--spacing-md);
}

.feature-title {
  font-size: 1.3rem;
  margin-bottom: var(--spacing-sm);
}

.feature-card p {
  color: var(--color-text-tertiary);
  font-size: 0.95rem;
}

/* How It Works */
.how-it-works {
  background-color: var(--color-card-bg);
  position: relative;
  overflow: hidden;
}

.how-it-works::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -50%;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 50% 50%, rgba(43, 134, 197, 0.1), transparent 70%);
  z-index: 0;
}

.how-it-works h2 {
  margin-bottom: var(--spacing-sm);
  position: relative;
  z-index: 1;
}

.how-it-works > .container > p {
  max-width: 600px;
  margin: 0 auto var(--spacing-xl);
  color: var(--color-text-secondary);
  position: relative;
  z-index: 1;
}

.steps {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  position: relative;
  z-index: 1;
}

.step {
  display: flex;
  gap: var(--spacing-lg);
  align-items: flex-start;
}

.step-number {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 50px;
  height: 50px;
  background: linear-gradient(45deg, var(--color-primary), var(--color-secondary));
  border-radius: 50%;
  font-weight: bold;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.step-content {
  flex-grow: 1;
}

.step-title {
  margin-bottom: var(--spacing-xs);
}

.step p {
  color: var(--color-text-tertiary);
}

/* Gallery */
.gallery {
  background-color: var(--color-background);
  position: relative;
}

.gallery h2 {
  margin-bottom: var(--spacing-sm);
}

.gallery > .container > p {
  max-width: 600px;
  margin: 0 auto var(--spacing-xl);
  color: var(--color-text-secondary);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

.gallery-item {
  height: 200px;
  border-radius: var(--border-radius-md);
  overflow: hidden;
  position: relative;
  cursor: pointer;
  transition: transform 0.3s ease;
}

.gallery-item:hover {
  transform: scale(1.03);
}

/* CTA Section */
.cta {
  background: linear-gradient(45deg, var(--color-primary), var(--color-secondary), var(--color-tertiary));
  padding: var(--spacing-xl) 0;
  text-align: center;
  border-radius: var(--border-radius-lg);
  margin: var(--spacing-xl) auto;
  max-width: 1100px;
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.2), transparent 70%);
  z-index: 0;
}

.cta-title {
  font-size: 2.2rem;
  margin-bottom: var(--spacing-md);
  position: relative;
  z-index: 1;
}

.cta-text {
  max-width: 600px;
  margin: 0 auto var(--spacing-lg);
  color: rgba(255, 255, 255, 0.9);
  position: relative;
  z-index: 1;
}

.cta .btn-primary {
  background: rgba(255, 255, 255, 0.2);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
  position: relative;
  z-index: 1;
}

.cta .btn-primary:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
}

/* Footer */
.footer {
  background-color: var(--color-card-bg);
  padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-container {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
}

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

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  width: fit-content;
}

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

.footer-heading {
  font-size: 1.2rem;
  margin-bottom: var(--spacing-md);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer-link a {
  color: var(--color-text-tertiary);
  transition: color 0.3s ease;
}

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

.footer-legal {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  color: var(--color-text-tertiary);
  font-size: 0.8rem;
}

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

/* Animations */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

.pulse {
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% {
    transform: scale(1);
    box-shadow: 0 4px 15px rgba(255, 60, 172, 0.4);
  }
  50% {
    transform: scale(1.05);
    box-shadow: 0 8px 20px rgba(255, 60, 172, 0.6);
  }
  100% {
    transform: scale(1);
    box-shadow: 0 4px 15px rgba(255, 60, 172, 0.4);
  }
}

/* Typing animation */
.typing::after {
  content: "|";
  animation: blink 1s infinite;
}

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

/* Ripple effect */
.ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.7);
  transform: scale(0);
  animation: ripple 0.6s linear;
  pointer-events: none;
}

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

/* Media Queries */
@media (max-width: 992px) {
  h1 {
    font-size: 2.2rem;
  }
  
  h2 {
    font-size: 1.8rem;
  }
  
  .hero-container {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .hero-image {
    order: -1;
  }
  
  .footer-container {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }
  
  .nav {
    position: fixed;
    top: 60px;
    left: 0;
    width: 100%;
    height: 0;
    background-color: var(--color-card-bg);
    overflow: hidden;
    transition: height 0.3s ease;
    z-index: 100;
  }
  
  .nav.active {
    height: auto;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
  }
  
  .nav-list {
    flex-direction: column;
    padding: var(--spacing-md);
    gap: var(--spacing-md);
  }
  
  .feature-card {
    padding: var(--spacing-md);
  }
  
  .step {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-md);
  }
  
  .step-number {
    margin: 0 auto;
  }
}

@media (max-width: 576px) {
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.5rem;
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-subtitle {
    font-size: 1.1rem;
  }
  
  .hero-btns {
    flex-direction: column;
  }
  
  .btn {
    width: 100%;
    text-align: center;
  }
  
  .feature-icon {
    width: 80px;
    height: 80px;
  }
  
  .cta-title {
    font-size: 1.8rem;
  }
}