:root {
    --brand-yellow: #F7D02C;
    --brand-dark: #121212;
    --brand-gray: #1C1C1E;
    --text-main: #FFFFFF;
    --text-muted: #A1A1A6;
    --accent-purple: #8B5CF6;
    --accent-cyan: #06B6D4;
  }
  * {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
  body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--brand-dark);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
  }
  a {
    text-decoration: none;
    color: inherit;
  }
  img {
    max-width: 100%;
    display: block;
  }
  
  /* Layout */
  .container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
  }
  .section {
    padding: 60px 0;
    position: relative;
  }
  .section-header {
    text-align: center;
    margin-bottom: 40px;
  }
  .section-title {
    font-size: 28px;
    font-weight: 800;
    letter-spacing: 1px;
    margin-bottom: 12px;
    color: var(--brand-yellow);
  }
  .section-desc {
    font-size: 15px;
    color: var(--text-muted);
  }

  /* Header */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(18, 18, 18, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255,255,255,0.05);
  }
  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
  }
  .logo-area {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: bold;
  }
  .logo-area img {
    height: 32px;
    border-radius: 6px;
  }
  .nav-links {
    display: none;
  }
  
  /* Hero */
  .hero {
    position: relative;
    padding: 80px 0 60px;
    overflow: hidden;
    background: radial-gradient(circle at top right, rgba(139, 92, 246, 0.15) 0%, transparent 50%),
                radial-gradient(circle at bottom left, rgba(6, 182, 212, 0.1) 0%, transparent 50%);
  }
  .hero-inner {
    display: flex;
    flex-direction: column;
    gap: 40px;
  }
  .hero-content {
    text-align: center;
    z-index: 2;
  }
  .hero-title {
    font-size: 36px;
    line-height: 1.2;
    font-weight: 900;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #FFF, var(--brand-yellow));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }
  .hero-subtitle {
    font-size: 16px;
    color: var(--text-muted);
    margin-bottom: 30px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
  }
  .download-group {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    justify-content: center;
  }
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 24px;
    border-radius: 30px;
    font-size: 16px;
    font-weight: bold;
    transition: transform 0.2s, opacity 0.2s;
    gap: 8px;
  }
  .btn:hover {
    transform: translateY(-2px);
    opacity: 0.9;
  }
  .btn-primary {
    background: var(--brand-yellow);
    color: var(--brand-dark);
    box-shadow: 0 4px 15px rgba(247, 208, 44, 0.3);
  }
  .btn-outline {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-main);
    border: 1px solid rgba(255,255,255,0.2);
  }
  .btn-outline:hover {
    background: rgba(255, 255, 255, 0.15);
  }
  .hero-visual {
    position: relative;
    height: 300px;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
  }
  .carousel {
    display: flex;
    gap: 20px;
    width: max-content;
    animation: scroll 20s linear infinite;
  }
  .carousel:hover {
    animation-play-state: paused;
  }
  .carousel img {
    width: 140px;
    height: 200px;
    object-fit: cover;
    border-radius: 12px;
    box-shadow: 0 10px 20px rgba(0,0,0,0.5);
    transition: transform 0.3s;
  }
  .carousel img:hover {
    transform: scale(1.05);
  }
  @keyframes scroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
  }

  /* Sections */
  .grid-cards {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .card {
    background: var(--brand-gray);
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.05);
    transition: transform 0.3s;
  }
  .card:hover {
    transform: translateY(-5px);
  }
  .card-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
  }
  .card-body {
    padding: 20px;
  }
  .card-tag {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    background: rgba(247, 208, 44, 0.2);
    color: var(--brand-yellow);
    margin-bottom: 10px;
  }
  .card-title {
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 8px;
  }
  .card-text {
    font-size: 14px;
    color: var(--text-muted);
  }

  /* Split Layout */
  .split-layout {
    display: flex;
    flex-direction: column;
    gap: 30px;
  }
  .split-img {
    flex: 1;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
  }
  .split-img img {
    width: 100%;
    height: auto;
    object-fit: cover;
  }
  .split-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 15px;
  }
  .list-item {
    background: var(--brand-gray);
    padding: 15px 20px;
    border-radius: 12px;
    border-left: 4px solid var(--brand-yellow);
  }
  .list-item-title {
    font-size: 16px;
    font-weight: bold;
    margin-bottom: 6px;
  }
  .list-item-desc {
    font-size: 14px;
    color: var(--text-muted);
  }

  /* Timeline */
  .timeline {
    position: relative;
    padding-left: 30px;
    margin-top: 30px;
  }
  .timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: rgba(255,255,255,0.1);
  }
  .timeline-item {
    position: relative;
    margin-bottom: 30px;
  }
  .timeline-item::before {
    content: '';
    position: absolute;
    left: -34px;
    top: 4px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--brand-yellow);
    box-shadow: 0 0 10px var(--brand-yellow);
  }
  .timeline-time {
    font-size: 14px;
    color: var(--brand-yellow);
    font-weight: bold;
    margin-bottom: 6px;
  }
  .timeline-content {
    background: var(--brand-gray);
    padding: 15px;
    border-radius: 12px;
    font-size: 14px;
    color: var(--text-muted);
  }

  /* FAQ */
  .faq-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
  }
  .faq-item {
    background: var(--brand-gray);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid rgba(255,255,255,0.05);
  }
  .faq-q {
    font-weight: bold;
    font-size: 16px;
    margin-bottom: 10px;
    color: var(--text-main);
  }
  .faq-a {
    font-size: 14px;
    color: var(--text-muted);
  }

  /* Gallery */
  .gallery-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }
  .gallery-grid img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    aspect-ratio: 3/4;
    object-fit: cover;
  }

  /* Footer */
  .site-footer {
    background: #090909;
    padding: 40px 0 20px;
    text-align: center;
    font-size: 13px;
    color: #666;
    border-top: 1px solid rgba(255,255,255,0.05);
  }
  .footer-text {
    margin-bottom: 10px;
  }
  .footer-link {
    color: #888;
    text-decoration: underline;
  }
  .footer-time {
    margin-top: 10px;
    font-size: 12px;
    color: #555;
  }

  /* Media Queries */
  @media (min-width: 768px) {
    .nav-links {
      display: flex;
      gap: 20px;
      font-size: 15px;
      color: var(--text-muted);
    }
    .nav-links a:hover {
      color: var(--brand-yellow);
    }
    .hero-inner {
      flex-direction: row;
      align-items: center;
      justify-content: space-between;
    }
    .hero-content {
      flex: 1;
      text-align: left;
    }
    .download-group {
      justify-content: flex-start;
    }
    .hero-visual {
      flex: 1;
      height: 400px;
      overflow: hidden;
    }
    .carousel img {
      width: 180px;
      height: 260px;
    }
    .grid-cards {
      grid-template-columns: repeat(2, 1fr);
    }
    .split-layout {
      flex-direction: row;
      align-items: center;
    }
    .split-img {
      width: 40%;
    }
    .gallery-grid {
      grid-template-columns: repeat(4, 1fr);
    }
  }

  @media (min-width: 1024px) {
    .hero-title {
      font-size: 48px;
    }
    .grid-cards {
      grid-template-columns: repeat(3, 1fr);
    }
    .split-layout {
      gap: 60px;
    }
    .gallery-grid {
      grid-template-columns: repeat(5, 1fr);
    }
    .timeline {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      padding-left: 0;
    }
    .timeline::before {
      display: none;
    }
    .timeline-item::before {
      display: none;
    }
    .timeline-content {
      margin-top: 10px;
    }
  }