:root {
    --bg-dark: #0a0a0c;
    --bg-panel: #141418;
    --bg-card: #1c1c22;
    --primary: #ffd200;
    --primary-hover: #ffdf4d;
    --text-main: #f5f5f7;
    --text-muted: #a0a0a8;
    --border-color: #2a2a30;
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --transition: all 0.3s ease;
  }

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

  body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
  }

  a {
    text-decoration: none;
    color: inherit;
  }

  ul {
    list-style: none;
  }

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

  /* Header & Nav */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(10, 10, 12, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
  }

  .nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
  }

  .brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
  }

  .brand img {
    height: 32px;
    width: auto;
    border-radius: var(--radius-sm);
  }

  .nav-links {
    display: none;
    gap: 24px;
    font-size: 0.95rem;
  }

  .nav-links a {
    color: var(--text-muted);
    transition: var(--transition);
  }

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

  .nav-dl-btn {
    background: var(--primary);
    color: #000;
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition);
  }

  .nav-dl-btn:hover {
    background: var(--primary-hover);
  }

  /* Hero Section */
  .hero {
    padding: 60px 0 80px;
    text-align: center;
    background: radial-gradient(circle at 50% 0%, rgba(255, 210, 0, 0.1) 0%, transparent 60%);
  }

  .hero h1 {
    font-size: 2rem;
    line-height: 1.3;
    margin-bottom: 16px;
    font-weight: 800;
  }

  .hero h1 span {
    color: var(--primary);
  }

  .hero p {
    color: var(--text-muted);
    font-size: 1rem;
    max-width: 600px;
    margin: 0 auto 32px;
  }

  .hero-downloads {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
  }

  .btn-dl {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    border-radius: 30px;
    font-size: 1.1rem;
    font-weight: 600;
    transition: var(--transition);
    border: 2px solid var(--primary);
  }

  .btn-dl.primary {
    background: var(--primary);
    color: #000;
  }

  .btn-dl.primary:hover {
    background: var(--primary-hover);
    border-color: var(--primary-hover);
    transform: translateY(-2px);
  }

  .btn-dl.secondary {
    background: transparent;
    color: var(--primary);
  }

  .btn-dl.secondary:hover {
    background: rgba(255, 210, 0, 0.1);
    transform: translateY(-2px);
  }

  .btn-dl.generic {
    background: var(--bg-panel);
    color: var(--text-main);
    border-color: var(--border-color);
  }

  .btn-dl.generic:hover {
    background: var(--bg-card);
    border-color: var(--text-muted);
    transform: translateY(-2px);
  }

  /* Section Common */
  .section {
    padding: 64px 0;
  }

  .section-title {
    text-align: center;
    font-size: 1.75rem;
    margin-bottom: 12px;
    font-weight: 700;
  }

  .section-desc {
    text-align: center;
    color: var(--text-muted);
    margin-bottom: 40px;
    font-size: 0.95rem;
  }

  /* Grid Layouts */
  .grid-2 {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .grid-3 {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .grid-4 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  /* Poster Cards */
  .poster-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: var(--transition);
  }

  .poster-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
  }

  .poster-img-wrap {
    position: relative;
    padding-top: 133%;
  }

  .poster-img-wrap img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  .poster-info {
    padding: 16px;
  }

  .poster-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 8px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .poster-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 8px;
  }

  .tag {
    font-size: 0.75rem;
    padding: 2px 8px;
    background: rgba(255, 210, 0, 0.15);
    color: var(--primary);
    border-radius: 4px;
  }

  .tag.date {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-muted);
  }

  .poster-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  /* AI Section */
  .ai-section {
    background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-panel) 100%);
  }

  /* Steps */
  .step-card {
    background: var(--bg-card);
    padding: 24px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    position: relative;
  }

  .step-num {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary);
    opacity: 0.5;
    margin-bottom: 12px;
  }

  .step-title {
    font-size: 1.1rem;
    margin-bottom: 8px;
    font-weight: 600;
  }

  .step-desc {
    font-size: 0.9rem;
    color: var(--text-muted);
  }

  /* FAQ */
  .faq-item {
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    margin-bottom: 12px;
    overflow: hidden;
  }

  .faq-q {
    padding: 16px 20px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .faq-q::after {
    content: '+';
    font-size: 1.2rem;
    color: var(--primary);
  }

  .faq-item.active .faq-q::after {
    content: '-';
  }

  .faq-a {
    padding: 0 20px 16px;
    color: var(--text-muted);
    font-size: 0.9rem;
    display: none;
  }

  /* Reviews */
  .review-card {
    background: var(--bg-card);
    padding: 20px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
  }

  .review-text {
    font-size: 0.95rem;
    margin-bottom: 12px;
    font-style: italic;
    color: var(--text-main);
  }

  .review-user {
    font-size: 0.85rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .review-user::before {
    content: '';
    width: 24px;
    height: 24px;
    background: #333;
    border-radius: 50%;
    display: inline-block;
  }

  /* Privacy */
  .privacy-item {
    display: flex;
    gap: 16px;
    margin-bottom: 20px;
  }

  .privacy-icon {
    font-size: 1.5rem;
    color: var(--primary);
  }

  .privacy-content h3 {
    font-size: 1.05rem;
    margin-bottom: 4px;
  }

  .privacy-content p {
    font-size: 0.9rem;
    color: var(--text-muted);
  }

  /* Creator & Community */
  .creator-box {
    background: linear-gradient(135deg, rgba(255,210,0,0.05) 0%, rgba(28,28,34,1) 100%);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
    text-align: center;
  }

  .community-box {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
    text-align: center;
  }

  /* Download Bottom */
  .bottom-dl {
    background: var(--bg-panel);
    border-top: 1px solid var(--border-color);
    padding: 64px 0;
    text-align: center;
  }

  .bottom-dl h2 {
    font-size: 1.75rem;
    margin-bottom: 12px;
  }

  .bottom-dl p {
    color: var(--text-muted);
    margin-bottom: 32px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
  }

  /* Footer */
  .site-footer {
    background: var(--bg-dark);
    padding: 32px 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
    font-size: 0.8rem;
    color: #666;
  }

  .site-footer a {
    color: #666;
    transition: var(--transition);
  }

  .site-footer a:hover {
    color: var(--text-muted);
  }

  .footer-meta {
    margin-top: 8px;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 16px;
  }

  /* Responsive */
  @media (min-width: 768px) {
    .hero h1 {
      font-size: 2.5rem;
    }
    .grid-2 {
      grid-template-columns: repeat(2, 1fr);
    }
    .grid-3 {
      grid-template-columns: repeat(2, 1fr);
    }
    .grid-4 {
      grid-template-columns: repeat(3, 1fr);
    }
    .nav-links {
      display: flex;
    }
  }

  @media (min-width: 1024px) {
    .hero h1 {
      font-size: 3rem;
    }
    .grid-3 {
      grid-template-columns: repeat(3, 1fr);
    }
    .grid-4 {
      grid-template-columns: repeat(4, 1fr);
    }
    .section {
      padding: 80px 0;
    }
    .step-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
  }