* {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        body {
            font-family: "Microsoft JhengHei", Arial, sans-serif;
            background-color: #f4f7f6;
            color: #333;
            line-height: 1.6;
            /* 防止 RWD 行動裝置文字自動放大 */
            -webkit-text-size-adjust: 100%; 
        }
        header {
            background-color: #4CAF50;
            color: white;
            text-align: center;
            padding: 1.5rem 1rem;
        }
        header h1 {
            font-size: 1.8rem;
        }
        .container {
            width: 100%;
            max-width: 800px;
            margin: 0 auto;
            padding: 15px;
        }
        /* 目錄區塊 */
        .toc {
            background: white;
            padding: 15px;
            border-radius: 8px;
            box-shadow: 0 2px 5px rgba(0,0,0,0.05);
            margin-bottom: 20px;
        }
        .toc h2 {
            margin-bottom: 15px;
            color: #4CAF50;
            text-align: center;
            font-size: 1.4rem;
        }
        /* RWD 預設：手機版目錄為單欄式，方便點擊 */
        .toc ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
            list-style: none;
        }
        .toc li a {
            display: block;
            background: #e7f3e8;
            color: #2e7d32;
            text-align: center;
            padding: 12px; /* 加大手機版點擊區域 */
            border-radius: 5px;
            text-decoration: none;
            font-weight: bold;
            font-size: 1rem;
            transition: 0.3s;
        }
        .toc li a:hover, .toc li a:active {
            background: #4CAF50;
            color: white;
        }
        /* 內容區塊 */
        .day-section {
            background: white;
            padding: 20px;
            border-radius: 8px;
            box-shadow: 0 2px 5px rgba(0,0,0,0.05);
            margin-bottom: 15px;
        }
        .day-section h2 {
            border-left: 5px solid #4CAF50;
            padding-left: 10px;
            margin-bottom: 12px;
            color: #2e7d32;
            font-size: 1.3rem;
        }
        .day-section p {
            margin-bottom: 8px;
            font-size: 1rem;
            word-wrap: break-word; /* 避免長文字爆出版面 */
        }
        .back-to-top {
            display: inline-block;
            margin-top: 10px;
            color: #4CAF50;
            text-decoration: none;
            font-size: 0.9rem;
            font-weight: bold;
            padding: 5px 0;
        }
        .back-to-top:hover {
            text-decoration: underline;
        }
        .one{
            text-decoration: none;
            color: #4CAF50;
        }
        img{
            width:300px ;
        }

        /* ==========================================
           RWD 媒體查詢：當螢幕寬度大於 480px (平板與電腦)
           ========================================== */
        @media (min-width: 480px) {
            header {
                padding: 2.5rem 2rem;
            }
            header h1 {
                font-size: 2.3rem;
            }
            .container {
                padding: 20px;
            }
            .toc {
                padding: 20px;
            }
            /* 平板與電腦上，目錄轉為網格排列 */
            .toc ul {
                display: grid;
                grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
                gap: 10px;
            }
            .toc li a {
                padding: 10px;
            }
            .day-section {
                padding: 25px;
                margin-bottom: 20px;
            }
            .day-section h2 {
                font-size: 1.5rem;
            }
        }