/* Basic Styling */
    
        .main-content {
            flex: 1;
			margin: 15px 3px 10px 3px;
            background: #EEE;
            border-radius: 25px;
            padding: 16px;
            box-shadow: 0 6px 25px rgba(0, 0, 0, 0.08);
			background-image: url('../image/gwbc_bg_h.jpg');
			background-size: cover;
			background-position: center;
			background-repeat: no-repeat;
        }
        h1 {
            color: #8B6039;
            font-size: 2.0rem;
			font-family: 'Gen Jyuu Gothic', 'Noto Sans JP', 'Yu Gothic', 'Hiragino Sans', 'Meiryo', sans-serif;
            margin-bottom: 20px;
            line-height: 1.0;
            position: relative;
            padding-bottom: 15px;
			margin-block-start: 0.2em;
			margin-inline-start: 0.5em;
        }
        
        h1::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 220px;
            height: 4px;
            background: linear-gradient(90deg, #B48239, #786036);
            border-radius: 2px;
        }
        h2 {
            color: #8B6039;
            margin: 15px 0 10px 0;
            font-size: 1.6rem;
            position: relative;
            padding-bottom: 10px;
        }
        
        h2::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 150px;
            height: 3px;
            background: #8B6039;
            border-radius: 2px;
        }
        
        p {
            margin-bottom: 20px;
            font-size: 1.1rem;
            color: #444;
        }
        
      	td {
  				padding-top: 2px;
  				padding-bottom: 3px;
  				padding-left: 10px;
  				padding-right: 10px;
				}
      
        .highlight {
            background: linear-gradient(120deg, rgba(52, 152, 219, 0.1) 0%, rgba(52, 152, 219, 0) 100%);
            padding: 25px;
            border-radius: 10px;
            margin: 25px 0;
            border-left: 4px solid #3498db;
        }
      
        .intro {
            font-size: 1.2rem;
            color: #8B6039;
            margin: 10px 0 10px 0;
            padding: 15px;
            background: #f8f9ff;
            border-left: 10px solid #80BAAE;		/* #ADDEF8; */
            border-radius: 15px;
        }
        /* 图文混排样式 */
        .image-container {
            margin: 30px 0;
            display: flex;
            gap: 30px;
            align-items: flex-start;
        }
        
        .text-content {
            display: flex;
            flex-wrap: wrap;
        }
        
        .image-wrapper {
            width: 80%;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
            transition: transform 0.5s;
        }
        
        .image-wrapper:hover {
            transform: translateY(-5px);
        }
        
        .image-wrapper img {
            width: 100%;
            height: auto;
            display: block;
            transition: transform 0.5s;
        }
        
        .image-wrapper:hover img {
            transform: scale(1.05);
        }
        
		.card {
            flex: 1 1 340px;
			border-radius: 10px;
			background-color: rgba(255, 255, 255, 0.3); /* Semi-transparent white */
			font-size: 1.2rem;
        }

		.sub-card {
 			display: inline-flex;
        }

        .green-button {
            margin: 10px auto;
            width: 200px;
            height: 40px;
            background: linear-gradient(to bottom, #5D9C8B 0%, #80BAAE 50%, #A3D8CA 100%);
            border-radius: 50px;
            position: relative;
            border: 2px solid rgba(255, 255, 255, 0.3);
			color: white;
			font-size: 1.2rem;
        }
        
        .green-button::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: -2px;
            right: -2px;
            height: 50%;
            border-radius: 0 0 50px 50px;
            border: 2px solid #3A7C6A;
            border-top: none;
        }

		.break {
			flex-basis: 100%;
			height: 0;
		}


        /* 手機版規則 */
        @media (max-width: 720px) {
			.main-content {
				flex: 1;
				margin: 15px 5px 10px 5px;
				background: #EEE;
				border-radius: 25px;
				padding: 20px;
				box-shadow: 0 6px 25px rgba(0, 0, 0, 0.08);
				background-image: url('../image/gwbc_bg_v.jpg');
				background-size: cover;
				background-position: center;
				background-repeat: no-repeat;
			}
			
			.card {
				flex-basis: 100%;
				border-radius: 10px;
				background-color: rgba(255, 255, 255, 0.3); /* Semi-transparent white */
				font-size: 1.1rem;
			}

		}

        @media (min-width: 1000px) {
            /* for wide screen -increase font size */
			.card {
				flex: 1 1 480px;
				border-radius: 10px;
				background-color: rgba(255, 255, 255, 0.3); /* Semi-transparent white */
				font-size: 1.2rem;
			}

		}


.back-to-top {
    position: fixed;
    bottom: 100px;
    right: 30px;
    width: 50px;
    height: 50px;
    cursor: pointer;
    display: none;
    z-index: 200;
    border-radius: 20%;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
    transition: transform 0.3s ease;
}

.back-to-top:hover {
    transform: scale(1.1);
}

.back-to-top.show {
    display: block;
}

/* 响应式设计 */
@media (max-width: 720px) {
    .back-to-top {
        bottom: 200px;
        right: 10px;
        width: 50px;
        height: 50px;
    }

}