* { margin: 0; padding: 0; box-sizing: border-box; }
        body { background: #f3f4f6; font-family: 'Tahoma', sans-serif; }
        .header-ad { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); color: white; text-align: center; padding: 10px; font-size: 14px; }
        .site-footer { background: #1f2937; color: #9ca3af; padding: 30px 20px; text-align: center; margin-top: 20px; }
        .iframe-container { background: white; margin: 20px auto; max-width: 1400px; border-radius: 16px; overflow: hidden; box-shadow: 0 4px 20px rgba(0,0,0,0.1); }
        iframe { width: 100%; height: calc(100vh - 200px); border: none; }
        .toolbar { background: #f9fafb; padding: 12px 20px; border-bottom: 1px solid #e5e7eb; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px; }
        .back-btn { background: #8b5cf6; color: white; padding: 8px 20px; border-radius: 30px; text-decoration: none; font-size: 14px; }
        .back-btn:hover { background: #7c3aed; transform: translateX(-5px); }
        .ad-banner { background: #fef3c7; border: 1px dashed #f59e0b; border-radius: 8px; padding: 8px 15px; font-size: 12px; color: #d97706; }