:root {
  --primary-color: #1e1e2f;
  --secondary-color: #2f2f4f;
  --accent-color: #ff9800;
  --text-color: #ffffff;
  --highlight-color: #ff5722;
  --gradient-start: #3a0ca3;
  --gradient-end: #7209b7;
  --card-bg: rgba(47, 47, 79, 0.7);
  --section-spacing: 80px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

body {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--text-color);
  line-height: 1.6;
  padding-top: 70px;
  min-height: 100%;
}

.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(30, 30, 47, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  padding: 15px 5%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
  border-bottom: 1px solid rgba(255, 152, 0, 0.3);
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(to right, var(--accent-color), #ff5722);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 30px;
}

.nav-link {
  color: var(--text-color);
  text-decoration: none;
  font-weight: 500;
  position: relative;
  padding: 5px 0;
  transition: color 0.3s ease;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  background: var(--accent-color);
  bottom: 0;
  left: 0;
  transition: width 0.3s ease;
}

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

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

.hero {
  padding: var(--section-spacing) 0;
  text-align: 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(114, 9, 183, 0.2), transparent 70%);
  z-index: -1;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 20px;
  background: linear-gradient(to right, #fff, #ff9800);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p {
  font-size: 1.2rem;
  max-width: 800px;
  margin: 0 auto 40px;
  color: rgba(255, 255, 255, 0.8);
}

.notice {
  background: rgba(255, 152, 0, 0.1);
  border-left: 4px solid var(--accent-color);
  padding: 15px;
  margin: 30px 0;
  border-radius: 0 4px 4px 0;
}

.notice p {
  margin: 0;
  color: var(--text-color);
}

.main-content {
  padding: var(--section-spacing) 0;
}

.section {
  margin-bottom: var(--section-spacing);
}

.section-title {
  font-size: 2rem;
  margin-bottom: 30px;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 0;
  width: 60px;
  height: 3px;
  background: var(--accent-color);
  border-radius: 3px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.card {
  background: var(--card-bg);
  border-radius: 10px;
  padding: 30px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(5px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.card::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, transparent, rgba(255, 152, 0, 0.1), transparent);
  transform: rotate(45deg);
  transition: all 0.6s ease;
  opacity: 0;
}

.card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
}

.card:hover::before {
  animation: shine 1.5s;
  opacity: 1;
}

@keyframes shine {
  0% {
    left: -100%;
    opacity: 0;
  }
  50% {
    opacity: 0.5;
  }
  100% {
    left: 100%;
    opacity: 0;
  }
}

.card h3 {
  font-size: 1.5rem;
  margin-bottom: 15px;
  color: var(--accent-color);
}

.card p {
  margin-bottom: 20px;
  color: rgba(255, 255, 255, 0.8);
}

.card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 20px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease;
}

.card:hover .card-img {
  transform: scale(1.03);
}

.code-container {
  background: rgba(30, 30, 47, 0.8);
  border-radius: 8px;
  padding: 20px;
  margin: 20px 0;
  overflow-x: auto;
  border-left: 4px solid var(--accent-color);
}

pre {
  margin: 0;
  font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
  font-size: 0.9rem;
  line-height: 1.5;
  color: #f8f8f2;
}

code {
  font-family: inherit;
}

.tabs {
  display: flex;
  margin-bottom: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.tab {
  padding: 10px 20px;
  cursor: pointer;
  position: relative;
  color: rgba(255, 255, 255, 0.7);
  transition: all 0.3s ease;
}

.tab.active {
  color: var(--text-color);
}

.tab.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--accent-color);
}

.tab:hover {
  color: var(--text-color);
}

.tab-content {
  display: none;
  animation: fadeIn 0.5s ease;
}

.tab-content.active {
  display: block;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.footer {
  background: rgba(30, 30, 47, 0.9);
  padding: 40px 0;
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer p {
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 10px;
}

@media (max-width: 768px) {
  .header {
    padding: 15px 20px;
  }
  
  .nav-links {
    gap: 15px;
  }
  
  .hero h1 {
    font-size: 2.2rem;
  }
  
  .hero p {
    font-size: 1rem;
  }
  
  .card-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .header {
    flex-direction: column;
    padding: 15px;
  }
  
  .logo {
    margin-bottom: 15px;
  }
  
  .nav-links {
    flex-wrap: wrap;
    justify-content: center;
  }
  
  .hero h1 {
    font-size: 1.8rem;
  }
  
  .section-title {
    font-size: 1.6rem;
  }
}