:root {
      --primary-color: #0d6efd;
      --secondary-color: #6610f2;
      --accent-color: #ffd700;
      --bg-dark: #0a0a0a;
      --bg-darker: #000000;
      --text-primary: #ffffff;
      --text-secondary: #b5b5b5;
      --glass-bg: rgba(255, 255, 255, 0.05);
      --glass-border: rgba(255, 255, 255, 0.1);
    }

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

    body {
      background: var(--bg-darker);
      color: var(--text-primary);
      font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
      line-height: 1.6;
      overflow-x: hidden;
    }

    /* Animated Background */
    .animated-bg {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      z-index: -1;
      background: linear-gradient(135deg, #0a0a0a 0%, #1a1a2e 50%, #0a0a0a 100%);
      background-size: 200% 200%;
      animation: gradientShift 15s ease infinite;
    }

    @keyframes gradientShift {
      0%, 100% { background-position: 0% 50%; }
      50% { background-position: 100% 50%; }
    }

    /* Navbar */
    .navbar {
      background: rgba(10, 10, 10, 0.8) !important;
      backdrop-filter: blur(20px);
      border-bottom: 1px solid var(--glass-border);
      padding: 1rem 0;
      transition: all 0.3s ease;
    }

    .navbar.scrolled {
      background: rgba(10, 10, 10, 0.95) !important;
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    }

    .navbar-brand {
      font-size: 1.5rem;
      font-weight: 700;
      background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .nav-link {
      color: var(--text-secondary) !important;
      font-weight: 500;
      transition: all 0.3s ease;
      position: relative;
    }

    .nav-link:hover {
      color: var(--primary-color) !important;
    }

    .nav-link::after {
      content: '';
      position: absolute;
      bottom: -5px;
      left: 0;
      width: 0;
      height: 2px;
      background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
      transition: width 0.3s ease;
    }

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

    /* Hero Section */
    .hero {
      padding: 180px 20px 120px;
      text-align: center;
      position: relative;
      overflow: hidden;
    }

    .hero::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: radial-gradient(circle at 50% 50%, rgba(13, 110, 253, 0.1) 0%, transparent 70%);
      pointer-events: none;
    }

    .hero-content {
      position: relative;
      z-index: 1;
      max-width: 900px;
      margin: 0 auto;
    }

    .hero h1 {
      font-size: clamp(2.5rem, 5vw, 4.5rem);
      font-weight: 800;
      margin-bottom: 1.5rem;
      background: linear-gradient(135deg, #ffffff 0%, #b5b5b5 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      line-height: 1.2;
      animation: fadeInUp 0.8s ease;
    }

    .hero p {
      font-size: clamp(1.1rem, 2vw, 1.35rem);
      color: var(--text-secondary);
      max-width: 700px;
      margin: 0 auto 2.5rem;
      line-height: 1.8;
      animation: fadeInUp 1s ease;
    }

    .hero-cta {
      display: flex;
      gap: 1rem;
      justify-content: center;
      flex-wrap: wrap;
      animation: fadeInUp 1.2s ease;
    }

    .btn-hero {
      padding: 1rem 2.5rem;
      font-size: 1.1rem;
      font-weight: 600;
      border-radius: 50px;
      transition: all 0.3s ease;
      text-decoration: none;
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
    }

    .btn-primary-hero {
      background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
      color: white;
      border: none;
      box-shadow: 0 10px 30px rgba(13, 110, 253, 0.3);
    }

    .btn-primary-hero:hover {
      transform: translateY(-3px);
      box-shadow: 0 15px 40px rgba(13, 110, 253, 0.4);
      color: white;
    }

    .btn-outline-hero {
      background: transparent;
      color: var(--text-primary);
      border: 2px solid var(--glass-border);
      backdrop-filter: blur(10px);
    }

    .btn-outline-hero:hover {
      background: var(--glass-bg);
      border-color: var(--primary-color);
      color: var(--primary-color);
      transform: translateY(-3px);
    }

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

    /* Features Section */
    .features-section {
      padding: 100px 0;
      position: relative;
    }

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

    .section-title h2 {
      font-size: clamp(2rem, 4vw, 3rem);
      font-weight: 700;
      margin-bottom: 1rem;
      background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

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

    .feature-card {
      background: var(--glass-bg);
      border: 1px solid var(--glass-border);
      padding: 2.5rem;
      border-radius: 20px;
      backdrop-filter: blur(10px);
      transition: all 0.4s ease;
      height: 100%;
      position: relative;
      overflow: hidden;
    }

    .feature-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: linear-gradient(135deg, rgba(13, 110, 253, 0.05) 0%, transparent 100%);
      opacity: 0;
      transition: opacity 0.4s ease;
    }

    .feature-card:hover {
      transform: translateY(-10px);
      border-color: var(--primary-color);
      box-shadow: 0 20px 60px rgba(13, 110, 253, 0.2);
    }

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

    .feature-icon {
      font-size: 3.5rem;
      margin-bottom: 1.5rem;
      display: inline-block;
      background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      filter: drop-shadow(0 4px 8px rgba(13, 110, 253, 0.3));
    }

    .feature-card h4 {
      font-size: 1.5rem;
      font-weight: 600;
      margin-bottom: 1rem;
      color: var(--text-primary);
    }

    .feature-card p {
      color: var(--text-secondary);
      line-height: 1.8;
    }

    /* Market Headlines Section */
    .headlines-section {
      padding: 80px 0;
      background: linear-gradient(180deg, rgba(13, 110, 253, 0.03) 0%, transparent 100%);
    }

    .spark-card {
      background: var(--glass-bg);
      border: 1px solid var(--glass-border);
      padding: 1.25rem;
      border-radius: 15px;
      margin-bottom: 1rem;
      transition: all 0.3s ease;
      display: flex;
      gap: 1rem;
      align-items: center;
    }

    .spark-card:hover {
      transform: translateX(5px);
      border-color: var(--primary-color);
      background: rgba(255, 255, 255, 0.08);
    }

    .spark-image {
      width: 100px;
      height: 70px;
      object-fit: cover;
      border-radius: 10px;
      flex-shrink: 0;
    }

    .spark-content {
      flex: 1;
    }

    .spark-title {
      color: var(--text-primary);
      font-weight: 600;
      font-size: 1rem;
      margin-bottom: 0.5rem;
      line-height: 1.4;
    }

    .spark-meta {
      color: var(--text-secondary);
      font-size: 0.875rem;
    }

    #sparks-list {
      max-height: 600px;
      overflow-y: auto;
      padding-right: 10px;
    }

    #sparks-list::-webkit-scrollbar {
      width: 6px;
    }

    #sparks-list::-webkit-scrollbar-track {
      background: var(--bg-dark);
      border-radius: 10px;
    }

    #sparks-list::-webkit-scrollbar-thumb {
      background: var(--primary-color);
      border-radius: 10px;
    }

    /* App Store Section */
    .app-section {
      padding: 100px 0;
      position: relative;
    }

    .phone-placeholder {
      width: 100%;
      max-width: 300px;
      border-radius: 40px;
      background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
      padding: 20px;
      box-shadow: 0 20px 60px rgba(13, 110, 253, 0.4);
      margin: 0 auto;
      transition: transform 0.3s ease;
    }

    .phone-placeholder:hover {
      transform: scale(1.05);
    }

    .phone-placeholder img {
      width: 100%;
      height: auto;
      border-radius: 30px;
      display: block;
    }

    .app-content h2 {
      font-size: clamp(1.8rem, 3vw, 2.5rem);
      font-weight: 700;
      margin-bottom: 1.5rem;
    }

    .app-content p {
      font-size: 1.1rem;
      color: var(--text-secondary);
      line-height: 1.8;
      margin-bottom: 1.5rem;
    }

    .price-badge {
      display: inline-block;
      padding: 0.5rem 1rem;
      background: var(--glass-bg);
      border: 1px solid var(--glass-border);
      border-radius: 50px;
      margin: 0.5rem 0.5rem 0.5rem 0;
      font-weight: 600;
    }

    /* Footer */
    footer {
      padding: 60px 0 30px;
      background: var(--bg-dark);
      border-top: 1px solid var(--glass-border);
      margin-top: 80px;
    }

    footer h5 {
      font-weight: 600;
      margin-bottom: 1rem;
      color: var(--text-primary);
    }

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

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

    .social-link {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      color: var(--text-secondary);
      text-decoration: none;
      transition: all 0.3s ease;
    }

    .social-link svg {
      width: 20px;
      height: 20px;
      fill: currentColor;
    }

    .social-link:hover {
      color: var(--primary-color);
      transform: translateY(-2px);
    }

    /* Construction Banner */
    .construction-banner {
      background: linear-gradient(135deg, #ffc107, #ff9800);
      color: #000;
      text-align: center;
      padding: 0.75rem;
      font-weight: 600;
      position: relative;
      margin-top: 76px;
      z-index: 1000;
    }

    /* Responsive */
    @media (max-width: 768px) {
      .hero {
        padding: 140px 20px 80px;
      }

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

      .btn-hero {
        width: 100%;
        justify-content: center;
      }

      .features-section,
      .app-section {
        padding: 60px 0;
      }
    }

    /* Loading Animation */
    .fade-in {
      animation: fadeIn 0.6s ease;
    }

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