:root {
    --primary: linear-gradient(135deg, #1a237e, #6a1b9a);
    --secondary: #424242;
    --accent: #4caf50;
    --text: #ffffff;
    --card-bg: rgba(255, 255, 255, 0.1);
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
  }

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

  html {
    scroll-behavior: smooth;
  }

  body {
    font-family: 'Roboto', sans-serif;
    color: var(--text);
    background: var(--primary);
    line-height: 1.6;
    overflow-x: hidden;
  }

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

  .hero {
    height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    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(106, 27, 154, 0.3), transparent 70%);
    z-index: -1;
  }

  .hero-content {
    max-width: 800px;
    padding: 40px;
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    box-shadow: var(--shadow);
    transform: translateY(0);
    opacity: 1;
    transition: all 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  }

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

  h1, h2, h3, h4 {
    margin-bottom: 1.5rem;
    font-weight: 500;
    line-height: 1.2;
  }

  h1 {
    font-size: 3rem;
    background: linear-gradient(to right, #ffffff, #b388ff);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
  }

  h2 {
    font-size: 2.2rem;
    color: #b388ff;
    position: relative;
    padding-bottom: 10px;
    margin-top: 3rem;
  }

  h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 80px;
    height: 4px;
    background: linear-gradient(to right, #6a1b9a, #1a237e);
    border-radius: 2px;
  }

  h3 {
    font-size: 1.8rem;
    color: #b388ff;
    margin-top: 2.5rem;
  }

  p {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    color: rgba(255, 255, 255, 0.9);
  }

  .notice {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 15px 25px;
    border-radius: 8px;
    z-index: 1000;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    animation: float 3s ease-in-out infinite;
  }

  @keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
  }

  .grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
    padding: 40px 0;
  }

  .card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    padding: 30px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
  }

  .card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
    border-color: rgba(255, 255, 255, 0.3);
  }

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

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

  pre {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 8px;
    padding: 20px;
    margin: 25px 0;
    overflow: auto;
    border-left: 4px solid #6a1b9a;
    font-family: 'Courier New', monospace;
    font-size: 0.95rem;
    line-height: 1.5;
  }

  code {
    color: #b388ff;
    background: transparent;
    padding: 2px 4px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
  }

  .nav-container {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(26, 35, 126, 0.9);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
  }

  .navbar {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

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

  .nav-links a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    position: relative;
    padding: 5px 0;
  }

  .nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: #b388ff;
    transition: width 0.3s ease;
  }

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

  .content {
    padding-top: 100px;
    padding-bottom: 100px;
  }

  .image-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
    margin: 40px 0;
  }

  .gallery-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
    border-radius: 12px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
  }

  .gallery-image:hover {
    transform: scale(1.05);
    box-shadow: 0 12px 25px rgba(0, 0, 0, 0.3);
  }

  .price-up {
    color: #4caf50;
    animation: pulse 1.5s infinite;
  }

  .price-down {
    color: #f44336;
    animation: pulse 1.5s infinite;
  }

  @keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
  }

  .sidebar {
    position: fixed;
    top: 70px;
    left: 0;
    width: 250px;
    height: calc(100vh - 70px);
    background: rgba(66, 66, 66, 0.9);
    backdrop-filter: blur(10px);
    padding: 30px 20px;
    box-sizing: border-box;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    z-index: 999;
  }

  .sidebar.active {
    transform: translateX(0);
  }

  .sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 15px;
  }

  .sidebar-nav a {
    color: white;
    text-decoration: none;
    padding: 10px;
    border-radius: 6px;
    transition: all 0.3s ease;
  }

  .sidebar-nav a:hover {
    background: rgba(255, 255, 255, 0.1);
  }

  .menu-toggle {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
  }

  @media (max-width: 992px) {
    .sidebar {
      transform: translateX(-100%);
    }
    .sidebar.active {
      transform: translateX(0);
    }
    .menu-toggle {
      display: block;
    }
    .nav-links {
      display: none;
    }
    .hero-content {
      padding: 30px;
    }
    h1 {
      font-size: 2.5rem;
    }
  }

  @media (max-width: 768px) {
    .grid-container {
      grid-template-columns: 1fr;
    }
    .hero {
      height: auto;
      padding: 100px 0;
    }
    h1 {
      font-size: 2rem;
    }
    h2 {
      font-size: 1.8rem;
    }
    h3 {
      font-size: 1.5rem;
    }
  }

  @media (max-width: 576px) {
    .content {
      padding-top: 80px;
    }
    .hero-content {
      padding: 20px;
    }
    .notice {
      bottom: 10px;
      right: 10px;
      padding: 10px 15px;
      font-size: 0.9rem;
    }
  }

  .dashboard {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 25px;
    margin: 40px 0;
  }

  .widget {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    padding: 25px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
  }

  .widget:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
  }

  .widget-title {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: #b388ff;
    display: flex;
    align-items: center;
    gap: 10px;
  }

  .widget-content {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.9);
  }

  .floating-button {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #6a1b9a, #1a237e);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 999;
  }

  .floating-button:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 25px rgba(0, 0, 0, 0.4);
  }

  .section {
    margin-bottom: 80px;
  }

  .divider {
    height: 1px;
    background: linear-gradient(to right, transparent, rgba(255, 255, 255, 0.2), transparent);
    margin: 50px 0;
  }