:root {
    --bg-dark: #0f0a12;
    --bg-panel: #1a1220;
    --primary: #ff6b81;
    --primary-glow: rgba(255, 107, 129, 0.3);
    --text-main: #f2e9f0;
    --text-muted: #a395a8;
    --border-color: #33283a;
    --radius: 12px;
    --transition: all 0.3s ease;
  }

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

  body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    background-image: linear-gradient(180deg, #1a0b16 0%, var(--bg-dark) 100%);
    background-attachment: fixed;
  }

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

  ul {
    list-style: none;
  }

  /* Typography */
  h1, h2, h3 {
    font-weight: 600;
    line-height: 1.3;
  }

  /* Header & Nav */
  header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(15, 10, 18, 0.85);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
  }

  .nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

  .logo-group {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--primary);
  }

  .logo-group img {
    height: 32px;
    width: auto;
    border-radius: 6px;
  }

  .nav-links {
    display: none;
    gap: 24px;
    font-size: 0.9rem;
  }

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

  .nav-btn {
    display: none;
    background: var(--primary);
    color: #fff;
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: bold;
    font-size: 0.9rem;
    transition: var(--transition);
  }

  .nav-btn:hover {
    box-shadow: 0 0 15px var(--primary-glow);
  }

  /* Hero Section */
  .hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 100px 20px 60px;
    position: relative;
    overflow: hidden;
  }

  .hero::before {
    content: '';
    position: absolute;
    top: -20%;
    left: 50%;
    transform: translateX(-50%);
    width: 100vw;
    height: 60vh;
    background: radial-gradient(circle, var(--primary-glow) 0%, transparent 60%);
    z-index: -1;
    opacity: 0.6;
  }

  .hero h1 {
    font-size: 2.2rem;
    margin-bottom: 16px;
    background: linear-gradient(90deg, #fff, #ffb6c1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    max-width: 800px;
  }

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

  .hero-tags {
    display: flex;
    gap: 12px;
    margin-bottom: 40px;
    flex-wrap: wrap;
    justify-content: center;
  }

  .hero-tags span {
    background: rgba(255, 255, 255, 0.1);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    border: 1px solid var(--border-color);
  }

  .download-group {
    display: flex;
    flex-direction: column;
    gap: 16px;
    width: 100%;
    max-width: 320px;
  }

  .btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px 24px;
    border-radius: 30px;
    font-size: 1.1rem;
    font-weight: bold;
    transition: var(--transition);
    cursor: pointer;
  }

  .btn-primary {
    background: linear-gradient(135deg, #ff6b81, #ff4757);
    color: #fff;
    box-shadow: 0 4px 15px var(--primary-glow);
  }

  .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--primary-glow);
  }

  .btn-outline {
    background: transparent;
    color: var(--text-main);
    border: 1px solid var(--border-color);
  }

  .btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
  }

  /* Section Common */
  section {
    padding: 80px 20px;
    max-width: 1200px;
    margin: 0 auto;
  }

  .section-title {
    text-align: center;
    margin-bottom: 48px;
  }

  .section-title h2 {
    font-size: 2rem;
    margin-bottom: 12px;
    color: var(--text-main);
  }

  .section-title p {
    color: var(--text-muted);
    font-size: 1rem;
  }

  /* AI Drama Section */
  .ai-drama-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .ai-card {
    background: var(--bg-panel);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    transition: var(--transition);
  }

  .ai-card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
  }

  .ai-card img {
    width: 100%;
    height: auto;
    aspect-ratio: 3/4;
    object-fit: cover;
    display: block;
  }

  .ai-card-content {
    padding: 20px;
  }

  .ai-card-content h3 {
    font-size: 1.2rem;
    margin-bottom: 8px;
    color: var(--primary);
  }

  .ai-card-content p {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 16px;
  }

  .card-meta {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 12px;
  }

  .card-meta span {
    font-size: 0.75rem;
    background: rgba(255,255,255,0.05);
    padding: 4px 8px;
    border-radius: 4px;
    color: var(--text-muted);
  }

  /* Hot Drama Section */
  .hot-drama-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .hot-card {
    display: flex;
    gap: 16px;
    background: var(--bg-panel);
    padding: 16px;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    align-items: center;
  }

  .hot-card img {
    width: 80px;
    height: 110px;
    object-fit: cover;
    border-radius: 8px;
    flex-shrink: 0;
  }

  .hot-info {
    flex: 1;
  }

  .hot-info h3 {
    font-size: 1.1rem;
    margin-bottom: 6px;
  }

  .hot-info .desc {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .hot-info .date {
    font-size: 0.75rem;
    color: var(--primary);
  }

  /* Steps Section */
  .steps-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .step-item {
    background: var(--bg-panel);
    padding: 24px;
    border-radius: var(--radius);
    border-left: 4px solid var(--primary);
    position: relative;
  }

  .step-num {
    font-size: 2.5rem;
    font-weight: 900;
    color: rgba(255, 107, 129, 0.1);
    position: absolute;
    top: 10px;
    right: 20px;
    line-height: 1;
  }

  .step-item h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
    color: var(--primary);
  }

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

  /* FAQ Section */
  .faq-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
  }

  details {
    background: var(--bg-panel);
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    overflow: hidden;
  }

  summary {
    padding: 16px 20px;
    cursor: pointer;
    font-weight: bold;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
  }

  summary:hover {
    color: var(--primary);
  }

  summary::-webkit-details-marker {
    display: none;
  }

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

  details[open] summary {
    border-bottom: 1px solid var(--border-color);
  }

  details[open] summary::after {
    content: '-';
  }

  .faq-content {
    padding: 16px 20px;
    font-size: 0.9rem;
    color: var(--text-muted);
  }

  /* Review Section */
  .review-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .review-card {
    background: linear-gradient(145deg, var(--bg-panel), #150f1a);
    padding: 20px;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
  }

  .review-user {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
  }

  .avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    color: var(--primary);
    font-size: 0.9rem;
  }

  .review-user span {
    font-size: 0.9rem;
    font-weight: bold;
  }

  .review-text {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-style: italic;
  }

  /* Privacy & Creator Layout */
  .split-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .privacy-list, .creator-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
  }

  .privacy-item, .creator-item {
    background: var(--bg-panel);
    padding: 16px;
    border-radius: 8px;
    display: flex;
    gap: 16px;
    align-items: flex-start;
  }

  .icon-box {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--primary-glow);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    flex-shrink: 0;
    margin-top: 2px;
  }

  .privacy-text h4, .creator-text h4 {
    font-size: 1rem;
    margin-bottom: 4px;
  }

  .privacy-text p, .creator-text p {
    font-size: 0.85rem;
    color: var(--text-muted);
  }

  /* Community & Download */
  .community-download {
    background: var(--bg-panel);
    border-radius: 24px;
    padding: 40px 20px;
    text-align: center;
    border: 1px solid var(--border-color);
    margin-bottom: 60px;
  }

  .community-download h2 {
    margin-bottom: 24px;
  }

  .download-instruction {
    background: rgba(0,0,0,0.2);
    padding: 20px;
    border-radius: 12px;
    margin-bottom: 32px;
    text-align: left;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
  }

  .download-instruction p {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 8px;
  }

  .download-instruction p:last-child {
    margin-bottom: 0;
  }

  .final-buttons {
    display: flex;
    flex-direction: column;
    gap: 16px;
    max-width: 320px;
    margin: 0 auto;
  }

  /* Footer */
  footer {
    text-align: center;
    padding: 40px 20px;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.8rem;
  }

  footer p {
    margin-bottom: 8px;
  }

  footer a {
    color: var(--text-muted);
    text-decoration: underline;
  }

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

  /* Responsive */
  @media (min-width: 768px) {
    .nav-links {
      display: flex;
    }
    .nav-btn {
      display: inline-block;
    }
    .hero h1 {
      font-size: 3rem;
    }
    .download-group {
      flex-direction: row;
      max-width: none;
      justify-content: center;
    }
    .ai-drama-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    .hot-drama-list {
      grid-template-columns: repeat(2, 1fr);
    }
    .steps-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    .faq-list {
      grid-template-columns: repeat(2, 1fr);
    }
    .review-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    .split-layout {
      grid-template-columns: 1fr 1fr;
    }
    .final-buttons {
      flex-direction: row;
      max-width: none;
    }
  }

  @media (min-width: 1024px) {
    .ai-drama-grid {
      grid-template-columns: repeat(3, 1fr);
    }
    .hot-drama-list {
      grid-template-columns: repeat(3, 1fr);
    }
    .steps-grid {
      grid-template-columns: repeat(3, 1fr);
    }
    .faq-list {
      grid-template-columns: repeat(3, 1fr);
    }
    .review-grid {
      grid-template-columns: repeat(3, 1fr);
    }
  }