:root {
      --bg-dark: #0f1115;
      --bg-card: #1a1d24;
      --primary: #ff3b5c;
      --primary-hover: #ff5c7a;
      --secondary: #7b2cbf;
      --text-main: #f0f2f5;
      --text-muted: #8b92a5;
      --border: #2d333f;
      --gradient: linear-gradient(135deg, #ff3b5c 0%, #7b2cbf 100%);
      --radius: 12px;
    }
    * { margin: 0; padding: 0; box-sizing: border-box; }
    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; }
    img { max-width: 100%; height: auto; display: block; }
    
    /* Typography */
    h1, h2, h3 { font-weight: 700; line-height: 1.3; }
    h2 { font-size: 1.8rem; margin-bottom: 1.5rem; text-align: center; }
    h2 span { color: var(--primary); }
    h3 { font-size: 1.2rem; margin-bottom: 0.8rem; }
    
    /* Layout */
    .container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }
    section { padding: 60px 0; }
    
    /* Header & Nav */
    header {
      position: fixed;
      top: 0; left: 0; width: 100%;
      background: rgba(15, 17, 21, 0.9);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border);
      z-index: 100;
    }
    .nav-wrap {
      display: flex; align-items: center; justify-content: space-between;
      height: 64px;
    }
    .logo-area { display: flex; align-items: center; gap: 10px; }
    .logo-area img { height: 32px; border-radius: 6px; }
    .logo-area span { font-size: 1.2rem; font-weight: 700; letter-spacing: 1px; }
    .nav-links { display: none; }
    .nav-links a { margin: 0 12px; font-size: 0.95rem; color: var(--text-muted); transition: color 0.3s; }
    .nav-links a:hover { color: var(--primary); }
    
    /* Hero Section */
    .hero {
      padding-top: 100px; padding-bottom: 60px;
      background: radial-gradient(circle at top right, rgba(123, 44, 191, 0.2) 0%, transparent 40%),
                  radial-gradient(circle at bottom left, rgba(255, 59, 92, 0.15) 0%, transparent 40%);
      text-align: center;
    }
    .hero h1 { font-size: 2.2rem; margin-bottom: 20px; }
    .hero h1 span { background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
    .hero p { color: var(--text-muted); font-size: 1.1rem; max-width: 600px; margin: 0 auto 30px; }
    
    /* Download Buttons */
    .download-group {
      display: flex; flex-direction: column; gap: 15px; align-items: center;
      margin-bottom: 40px;
    }
    .btn-download {
      display: inline-flex; align-items: center; justify-content: center;
      padding: 15px 30px; border-radius: 30px; font-weight: 600; font-size: 1.1rem;
      background: var(--gradient); color: #fff; width: 100%; max-width: 280px;
      transition: transform 0.2s, box-shadow 0.2s;
      box-shadow: 0 4px 15px rgba(255, 59, 92, 0.3);
    }
    .btn-download:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(255, 59, 92, 0.5); }
    .btn-download.other {
      background: transparent; border: 2px solid var(--primary); box-shadow: none;
    }
    .btn-download.other:hover { background: rgba(255, 59, 92, 0.1); }
    
    /* Hero Pics */
    .hero-pics {
      display: flex; gap: 10px; justify-content: center;
      overflow-x: auto; padding-bottom: 10px; scrollbar-width: none;
    }
    .hero-pics::-webkit-scrollbar { display: none; }
    .hero-pics img {
      width: 120px; height: 180px; object-fit: cover; border-radius: 8px;
      flex-shrink: 0; border: 1px solid var(--border);
    }
    
    /* AI Section */
    .ai-section { background: var(--bg-card); }
    .ai-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 15px; }
    .ai-card {
      background: var(--bg-dark); border-radius: var(--radius);
      overflow: hidden; border: 1px solid var(--border);
    }
    .ai-card img { width: 100%; height: 180px; object-fit: cover; }
    .ai-card-content { padding: 12px; }
    .ai-card h3 { font-size: 1rem; margin-bottom: 6px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
    .ai-tags { display: flex; gap: 6px; margin-bottom: 8px; flex-wrap: wrap; }
    .ai-tag {
      font-size: 0.75rem; padding: 2px 8px; border-radius: 4px;
      background: rgba(123, 44, 191, 0.2); color: #d1a3ff;
    }
    .ai-meta { font-size: 0.8rem; color: var(--text-muted); display: flex; justify-content: space-between; }
    
    /* Hot Section */
    .hot-list { display: grid; grid-template-columns: 1fr; gap: 15px; }
    .hot-item {
      display: flex; gap: 15px; background: var(--bg-card);
      border-radius: var(--radius); padding: 10px; border: 1px solid var(--border);
    }
    .hot-item img { width: 100px; height: 140px; object-fit: cover; border-radius: 8px; }
    .hot-info { flex: 1; display: flex; flex-direction: column; justify-content: center; }
    .hot-info h3 { font-size: 1.1rem; margin-bottom: 5px; }
    .hot-info p { 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-meta { font-size: 0.8rem; color: var(--primary); }
    
    /* Steps Section */
    .steps-grid { display: grid; grid-template-columns: 1fr; gap: 15px; }
    .step-card {
      background: var(--bg-card); border-radius: var(--radius); padding: 20px;
      border-left: 4px solid var(--primary);
    }
    .step-num { font-size: 1.5rem; font-weight: 800; color: var(--primary); margin-bottom: 10px; }
    .step-card h3 { font-size: 1.1rem; margin-bottom: 8px; }
    .step-card p { font-size: 0.9rem; color: var(--text-muted); }
    
    /* FAQ Section */
    .faq-list { display: flex; flex-direction: column; gap: 10px; }
    .faq-item {
      background: var(--bg-card); border-radius: var(--radius); padding: 15px;
      border: 1px solid var(--border);
    }
    .faq-q { font-weight: 600; color: var(--primary); margin-bottom: 6px; display: flex; gap: 8px; }
    .faq-a { font-size: 0.9rem; color: var(--text-muted); padding-left: 20px; }
    
    /* Reviews Section */
    .reviews-grid { display: grid; grid-template-columns: 1fr; gap: 15px; }
    .review-card {
      background: var(--bg-card); border-radius: var(--radius); padding: 15px;
      display: flex; gap: 12px; border: 1px solid var(--border);
    }
    .review-avatar {
      width: 40px; height: 40px; border-radius: 50%; background: var(--gradient);
      display: flex; align-items: center; justify-content: center;
      font-weight: 700; color: #fff; flex-shrink: 0;
    }
    .review-content h4 { font-size: 0.95rem; margin-bottom: 4px; }
    .review-content p { font-size: 0.85rem; color: var(--text-muted); }
    
    /* Privacy Section */
    .privacy-grid { display: grid; grid-template-columns: 1fr; gap: 15px; }
    .privacy-card {
      background: rgba(26, 29, 36, 0.6); border-radius: var(--radius); padding: 15px;
      border: 1px dashed var(--border);
    }
    .privacy-card h3 { font-size: 1rem; color: #4cd964; margin-bottom: 6px; display: flex; align-items: center; gap: 6px; }
    .privacy-card p { font-size: 0.85rem; color: var(--text-muted); }
    
    /* Creator Section */
    .creator-banner {
      background: var(--gradient); border-radius: var(--radius); padding: 30px 20px;
      text-align: center; color: #fff;
    }
    .creator-banner h3 { font-size: 1.3rem; margin-bottom: 10px; }
    .creator-banner p { font-size: 0.95rem; opacity: 0.9; margin-bottom: 20px; }
    .creator-features { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
    .creator-feat {
      background: rgba(255,255,255,0.2); padding: 6px 12px; border-radius: 20px; font-size: 0.85rem;
    }
    
    /* Community Section */
    .community-box {
      background: var(--bg-card); border-radius: var(--radius); padding: 30px 20px;
      text-align: center; border: 1px solid var(--border);
    }
    .community-box h3 { font-size: 1.2rem; margin-bottom: 10px; }
    .community-box p { font-size: 0.95rem; color: var(--text-muted); margin-bottom: 20px; }
    
    /* Footer */
    footer {
      background: #090a0c; padding: 40px 0 20px; border-top: 1px solid var(--border);
      text-align: center; font-size: 0.85rem; color: var(--text-muted);
    }
    .footer-nav { display: flex; flex-wrap: wrap; justify-content: center; gap: 15px; margin-bottom: 20px; }
    .footer-nav a { color: var(--text-muted); transition: color 0.2s; }
    .footer-nav a:hover { color: var(--primary); }
    .footer-time { margin-top: 15px; color: #555; font-size: 0.75rem; }
    
    /* Desktop */
    @media (min-width: 768px) {
      h2 { font-size: 2.2rem; }
      .hero h1 { font-size: 3rem; }
      .nav-links { display: flex; }
      .download-group { flex-direction: row; justify-content: center; }
      .btn-download { width: auto; }
      .hero-pics img { width: 180px; height: 260px; }
      .ai-grid { grid-template-columns: repeat(3, 1fr); }
      .ai-card img { height: 220px; }
      .hot-list { grid-template-columns: repeat(2, 1fr); }
      .steps-grid { grid-template-columns: repeat(2, 1fr); }
      .reviews-grid { grid-template-columns: repeat(2, 1fr); }
      .privacy-grid { grid-template-columns: repeat(2, 1fr); }
    }
    
    @media (min-width: 1024px) {
      .hero-pics img { width: 200px; height: 300px; }
      .ai-grid { grid-template-columns: repeat(4, 1fr); }
      .hot-list { grid-template-columns: repeat(3, 1fr); }
      .steps-grid { grid-template-columns: repeat(4, 1fr); }
      .reviews-grid { grid-template-columns: repeat(3, 1fr); }
      .privacy-grid { grid-template-columns: repeat(3, 1fr); }
    }