body {
            font-family: 'Noto Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            background: var(--primary-gradient);
            min-height: 100vh;
            overflow-x: hidden;
        }

        .mobile-container {
            min-height: 100vh;
            background: linear-gradient(135deg, rgba(102, 126, 234, 0.9) 0%, rgba(118, 75, 162, 0.9) 100%);
            position: relative;
        }

        .background-pattern {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: 
                radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 40% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
            pointer-events: none;
        }

        .header-section {
            padding-top: 3rem;
            padding-bottom: 1.5rem;
            position: relative;
            z-index: 10;
        }

        .header-title {
            font-size: 1.75rem;
            font-weight: 700;
            color: white;
            text-shadow: 0 2px 4px rgba(0,0,0,0.3);
            margin-bottom: 0.5rem;
        }

        .header-subtitle {
            color: rgba(255, 255, 255, 0.9);
            text-shadow: 0 1px 2px rgba(0,0,0,0.3);
        }

        .preview-section {
            position: relative;
            z-index: 10;
            margin-bottom: 2rem;
        }

        .preview-card {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            box-shadow: var(--card-shadow);
            transition: all 0.3s ease;
        }

        .preview-image {
            height: 250px;
            object-fit: cover;
            transition: transform 0.3s ease, opacity 0.3s ease;
        }

        .preview-title {
            background: linear-gradient(90deg, #f0f8ff 0%, #e8f4f8 100%);
            color: #002f50;
            font-weight: 700;
            font-size: 1.125rem;
        }

        .features-section {
            position: relative;
            z-index: 10;
        }

        .feature-card {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border: none;
            transition: all 0.3s ease;
            cursor: pointer;
            position: relative;
            overflow: hidden;
            box-shadow: var(--card-shadow);
            min-height: 120px;
        }

        .feature-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--card-shadow-hover);
        }

        .feature-card:active {
            transform: scale(0.98);
        }

        .feature-card.active {
            transform: scale(1.02);
            box-shadow: var(--card-shadow-hover);
            z-index: 5;
        }

        .feature-icon {
            font-size: 2.5rem;
            margin-bottom: 0.75rem;
            color: #002f50;
        }

        .feature-text {
            font-size: 0.9rem;
            font-weight: 600;
            color: #002f50;
            line-height: 1.3;
        }

        /* Bootstrap custom colors for feature cards */
        .bg-attendance {
            background: linear-gradient(135deg, rgba(124, 223, 198, 0.9) 0%, rgba(124, 223, 198, 0.7) 100%) !important;
        }

        .bg-application {
            background: linear-gradient(135deg, rgba(203, 226, 156, 0.9) 0%, rgba(203, 226, 156, 0.7) 100%) !important;
        }

        .bg-approval {
            background: linear-gradient(135deg, rgba(255, 217, 138, 0.9) 0%, rgba(255, 217, 138, 0.7) 100%) !important;
        }

        .bg-export {
            background: linear-gradient(135deg, rgba(252, 125, 111, 0.9) 0%, rgba(252, 125, 111, 0.7) 100%) !important;
        }

        .bg-language {
            background: linear-gradient(135deg, rgba(197, 161, 214, 0.9) 0%, rgba(197, 161, 214, 0.7) 100%) !important;
        }

        .bg-custom {
            background: linear-gradient(135deg, rgba(165, 165, 165, 0.9) 0%, rgba(165, 165, 165, 0.7) 100%) !important;
        }

        .cta-section {
            position: relative;
            z-index: 10;
            padding-bottom: 3rem;
        }

        .btn-cta {
            background: linear-gradient(135deg, #ff6b6b 0%, #ee5a24 100%);
            border: none;
            padding: 0.875rem 3rem;
            font-size: 1.1rem;
            font-weight: 600;
            border-radius: 2rem;
            box-shadow: 0 4px 15px rgba(238, 90, 36, 0.4);
            transition: all 0.3s ease;
        }

        .btn-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(238, 90, 36, 0.6);
        }

        /* Animations */
        .fade-in-up {
            animation: fadeInUp 0.6s ease-out forwards;
        }

        .slide-in-left {
            animation: slideInLeft 0.8s ease-out forwards;
        }

        .slide-in-right {
            animation: slideInRight 0.8s ease-out forwards;
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        @keyframes slideInLeft {
            from {
                opacity: 0;
                transform: translateX(-30px);
            }
            to {
                opacity: 1;
                transform: translateX(0);
            }
        }

        @keyframes slideInRight {
            from {
                opacity: 0;
                transform: translateX(30px);
            }
            to {
                opacity: 1;
                transform: translateX(0);
            }
        }

        /* Responsive adjustments */
        @media (max-width: 576px) {
            .header-title {
                font-size: 1.5rem;
            }
            
            .preview-image {
                height: 200px;
            }
            
            .feature-card {
                min-height: 100px;
            }
            
            .feature-icon {
                font-size: 2rem;
            }
            
            .btn-cta {
                padding: 0.75rem 2.5rem;
                font-size: 1rem;
            }
        }

        /* Bootstrap utility extensions */
        .backdrop-blur {
            backdrop-filter: blur(10px);
        }

        .text-shadow {
            text-shadow: 0 2px 4px rgba(0,0,0,0.3);
        }

        .card-hover-effect {
            transition: all 0.3s ease;
        }

        .card-hover-effect:hover {
            transform: translateY(-5px);
        }

/* 預設先隱藏 */
.senario-mobile, .senario-desktop, .demo-section, .demo-section-mobile {
  display: none;
}

/* 手機 (例如 iPhone, 螢幕寬度小於 768px) */
@media only screen and (max-width: 767px) {
  .senario-mobile {
    display: block;
  }
  .demo-section-mobile{
    display: block;
  }
}

/* 桌面 (螢幕寬度大於等於 768px) */
@media only screen and (min-width: 768px) {
  .senario-desktop {
    display: block;
  }
  .demo-section{
    display: block;
  }
}