html, body {
            height: 100%;
            margin: 0;
            padding: 0;
            overflow: hidden;
            font-family: "Noto Serif SC", serif, "MI Lan Pro VF", "PingFang SC", "Lantinghei SC", "Microsoft YaHei", "HanHei SC", "Helvetica Neue", "Open sans", Arial, "Hiragino sans GB", Microsoft YaHei, STHeiti, "WenQuanYi Micro Hei", SimSun, sans-serif;
        }
        header, footer, nav, article, section {
            display: block;
            margin: 0;
            padding: 0;
        }
        #navbar {
            display: flex;
            justify-content: space-between;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            padding: 20px 30px;
            background-color: rgba(0, 0, 0, 0);
            box-sizing: border-box;
        }

        .logo img {
            height: 30px;
        }

        .links {
            display: flex;
            align-items: center;
        }

        .links a {
            margin-left: 20px;
            color: white;
            font-weight: 700;
            text-decoration: none;
            text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
        }

        #bottom-layer {
            line-height: 14pt;
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            padding: 10px;
            text-align: center;
            background-color: rgba(0, 0, 0, 0);
            color: #ffffffb0;
            box-sizing: border-box;
            font-size: 11px;
            z-index: -1;
        }

        #bottom-layer a {
            color: #ffffffb0;
            text-decoration: none;
        }

        #blur-bg {
            position: fixed;
            top: 0;
            left: 0;
            width: 100vw;
            height: 100vh;
            background: rgba(0,0,0,0.5);
            visibility: hidden;
        }

        #popup {
            position: fixed;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 80%;
            max-width: 500px;
            visibility: hidden;
            opacity: 0;
            transition: all 0.3s ease-in-out;
            z-index: 1000;
        }

        #popup img {
            width: 100%;
        }

        #popup.visible {
            visibility: visible;
            opacity: 1;
        }

        #blur-bg.visible {
            visibility: visible;
        }

        .slider {
            position: relative;
            width: 100%;
            height: 100%;
            overflow: hidden;
        }

        .slider .slide {
            position: absolute;
            width: 100%;
            height: 100%;
            opacity: 0;
            transition: opacity 3s;
        }

        .slide.active {
            opacity: 1;
        }

   #progressBar {
    position: fixed;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 50px;
    height: 7px;
    border-radius: 15px;
    background: #f3f3f369;
    overflow: hidden;
    bottom: 100px;
}

#progressBar div {
    height: 100%;
    width: 0;
    background: #fff;
    /* Remove transition; use animation instead */
}

#progressBar div.animate {
    animation: progress 6000ms linear forwards;
}

@keyframes progress {
    from {
        width: 0;
    }
    to {
        width: 100%;
    }
}

        .slider .slide.visible {
            opacity: 1;
        }

        .slider .slide:first-child {
            opacity: 1;
        }

        .slider .slide img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }