html {
            background-image: url("https://drawboard.cafe/background");
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: Verdana, Arial, sans-serif;
            font-size: 13px;
            color: #222;
        }

        .wrapper {
            display: flex;
            max-width: 1200px;
            margin: 20px auto;
            background: white;
            border: 1px solid #999;
            min-height: 700px;
            display: flex;
            align-items: flex-start;
        }

        .sidebar {
            width: 420px;
            border-right: 1px solid #999;
            overflow-y: auto;
            background: #fff;
        }

        header {
            background: #ce8745;
            color: white;
            padding: 10px;
            font-size: 18px;
            font-weight: bold;
        }

        .stats {
            margin: 10px;
            padding: 8px;
            border: 1px solid #999;
            background: #f5f5f5;
            font-size: 12px;
            line-height: 1.4;
        }

        .stats h3 {
            font-size: 13px;
            margin-bottom: 6px;
            color: #ce8745;
            border-bottom: 1px solid #ce8745;
            padding-bottom: 4px;
        }

        .year {
            padding: 10px;
        }

        .year-title {
            font-size: 16px;
            color: #ce8745;
            margin: 10px 0;
            border-bottom: 1px solid #ce8745;
        }

        .month {
            margin: 12px 0;
        }

        .month h2 {
            font-size: 13px;
            margin: 6px 0;
            color: #333;
        }

        .item {
            padding: 3px 0;
        }

        .item a {
            color: #003399;
            text-decoration: none;
        }

        .item a:hover {
            text-decoration: underline;
        }

        .date {
            color: #666;
            font-size: 12px;
            margin-right: 6px;
        }

        .preview {
            flex: 1;
            padding: 10px;
            background: #eee;
            position: sticky;
            top: 0;
            height: 100vh;
            overflow: auto;
        }

        .preview-box {
            display: none;
            background: white;
            border: 1px solid #999;
            padding: 10px;
        }

        .preview-default {
            display: block;
        }

        .preview-box:target {
            display: block;
        }

        .preview-box:target~.preview-default {
            display: none;
        }

        .preview img {
            width: 100%;
            border: 1px solid #999;
        }

        .caption {
            margin-top: 8px;
            font-size: 12px;
            color: #444;
        }

        #previewSrc.loading {
            opacity: 0.5;
            filter: blur(2px);
        }

        @media(max-width:900px) {
            .wrapper {
                flex-direction: column;
                max-height: 100dvh;
            }

            .sidebar {
                width: 420px;
                border-right: 1px solid #999;
                overflow-y: auto;
                height: 100vh;
            }
        }