body {
    font-family: 'Arial', sans-serif;
    text-align: center;
    background-color: #f4f4f4;
    color: #555;
}

#header,
#content {
    max-width: 800px;
    margin: 20px auto;
    background-color: #fff;
    padding: 20px 5px;
    border-radius: .5em;
    box-shadow: 0 0 5px rgba(0, 0, 0, 0.1);
}

#header {
    padding: 10px 5px;
}

#content {
    margin-top: -8px;
}

button,
input,
select {
    padding: 10px;
    margin: 8px 5px;
    border: none;
    border-radius: 5px;
    box-shadow: 0 0 2px rgba(0, 0, 0, 0.2);
}

select {
    padding: 9px 6px;
    width: 50px;
    font-size: 10px;
}

button {
    padding: 6px;
    background-color: #fff;
    color: #555;
    cursor: pointer;
    opacity: .7;
    transition: .3s;
}

button:hover {
    opacity: .9;
    color: #fff;
    background-color: #a7c350;
    box-shadow: 0 0 5px rgba(0, 3, 0, 0.3);
}

input {
    width: 20%;
    max-width: 50px;
    min-width: 30px;
    font-size: 10px;
    color: #555;
    text-align: center;
}

input[type=number] {
    width: 20px;
}

input[type=text] {
    text-align: left;
    width: 25%;
    max-width: 200px;
    min-width: 40px;
}

img {
    cursor: pointer;
}

#artworkInfo img {
    width: 70%;
    max-width: 600px;
    margin: 20px auto;
    border-radius: 10px;
    box-shadow: 0 0 5px rgba(0, 0, 0, .2);
    transition: .3s;
    display: block;
}

#image-select {
    margin: 0 5px 0 20px;
}

img:hover,
#artworkInfo img:hover {
    box-shadow: 0 0 8px rgba(0, 0, 0, .4);
}

#loading {
    display: none;
}

#countdown {
    font-family: 'Courier New', Courier, monospace;
    font-size: 24px;
    margin: 15px 0;
    color: #a7c350;
}

#loading {
    display: none;
    font-size: 18px;
    color: #ccc;
    margin: 30px 0;
}

#artworkInfo {
    font-size: .8em;
}

#artworkInfo #text,
#title {
    width: 80%;
    margin: 0 auto;
    font-family: Times New Roman, "思源宋体 CN", 文泉驿等宽微米黑, "FZLanTingKanSongK";

}

a {
    color: #a7c350;
    text-decoration: none;
    transition: .3s;
}

a:hover {
    color: #fff;
    background-color: #a7c350;
}

#thumbnails {
    column-count: 4;
    column-gap: 8px;
    margin: 0 15px;
}

.thumbnail,
.thumbnail-link {
    width: 100%;
    /* 让图片充满列宽 */
    height: auto;
    margin-bottom: 8px;
    /* 设置图片之间的距离 */
    break-inside: avoid-column;
    /* 避免图片跨列显示 */
    border-radius: .5em;
    box-shadow: 0 0 2px rgba(0, 0, 0, .2);
    transition: .3s;
}

.favorite-arts,
.favorite-words {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    grid-gap: 8px;
    margin: 0 0 50px;
}

.favorite-arts img,
.favorite-words div {
    width: 100%;
    width: calc((80vw - 46px) / 5);
    height: calc((80vw - 46px) / 5);
    max-width: 120px;
    max-height: 120px;
    object-fit: cover;
    /* 图片内容按比例填充，多余部分会被裁剪 */
    transition: .3s;
    border-radius: .5em;
}

.favorite-words div {
    height: auto;
    padding: 0 0 0 10px;
    position: relative;
    margin: 1vw 0 0;
    width: auto;
}

.favorite-words div::before {
    content: "● ";
    color: #ccc;
    display: block;
    position: absolute;
    left: 0;
    top: 2px;
    font-size: .5em;
}

.favorite-arts a {
    position: relative;
    display: inline-block;
    text-decoration: none;

}


.favorite-arts .text-overlay {
    opacity: 0;
    border-radius: 1em;
    position: absolute;
    bottom: 3px;
    left: 0;
    top: 0;
    width: 100%;
    background-color: rgba(0, 0, 0, 0.3);
    /* 半透明背景 */
    color: white;
    padding: 10px;
    box-sizing: border-box;
    overflow: hidden;
    transition: .3s;
    font-size: .05vw;
}

.favorite-arts a:hover .text-overlay {
    opacity: 1;
}


.thumbnail-link {
    display: block;
    font-size: .5em;
    padding: 5px 0;
    background-color: #fafafa;
}

#favorites-container {
    text-align: left;
    width: 80%;
    margin: 0 auto;
}


#favorites-container h1 {
    margin: 30px 0 10px;
}

#favorites-container h1::before {
    content: "📜";
    margin-right: 5px;
}

#favorites-container h2 {
    color: #aaa;
    margin: 0 0 25px;
    border-left: 4px solid #aaa;
    padding-left: 10px;
}

#favorites-container h2:first-of-type {
    margin: 50px 0 10px;
}

.favorite-words .favorite-item a {
    padding: 2px;
}

#favorites-container label {
    font-family: Arial, sans-serif;
    font-size: .8em;
    color: #ccc;
    cursor: pointer;
}

input[type="checkbox"] {
    width: auto;
    min-width: auto;
    padding: 5px 0 0;
    margin: 0;
    box-shadow: none;
    accent-color: #a7c350;
}

#overwriteCheckbox {
    vertical-align: middle;
    margin: 0 0 0 15px;
}

#favorites-container label:hover {
    color: #a7c350;
}

.favorite-item {
    font-size: .8em;
}

.favorite-arts a:hover {
    background: none;
}

#favorites-container #tip {
    display: inline;
    margin: 0 0 0 15px;
    color: #ccc;
    font-size: .7em;
}

@media (max-width: 650px) {
    #thumbnails {
        column-count: 3;
    }

    #artworkInfo img {
        width: 95%;
    }

    .favorite-arts .text-overlay {
        padding: 3px;
    }

    .favorite-arts,
    .favorite-words {
        grid-template-columns: repeat(4, 1fr);
    }


    .favorite-arts img {
        width: calc(70vw / 4);
        height: calc(70vw / 4);
    }



}

@media (max-width: 400px) {
    #thumbnails {
        column-count: 2;
    }

    button,
    input,
    select {
        margin: 6px 4px;
    }

    #image-select {
        margin: 0 2px 0 10px;
    }

    .favorite-arts,
    .favorite-words {
        grid-template-columns: repeat(3, 1fr);
    }

    .favorite-arts img {
        width: calc(70vw / 3);
        height: calc(70vw / 3);
    }

}