/* 基础样式 */
body {
    font-family: Arial, sans-serif;
    /* 设置字体为Arial，无衬线字体 */
    margin: 0;
    /* 清除默认外边距 */
    padding: 0;
    /* 清除默认内边距 */
    background-color: #181828;
    /* 深色背景 */
    color: #e0e0e0;
    /* 设置字体颜色为淡灰色 */
    scroll-behavior: smooth;
    /* 平滑滚动效果 */
}

/* 页面头部样式 */
header {
    background-color: rgba(255, 255, 255, 0);
    /* 半透明白色背景 */
    color: #333;
    /* 设置字体颜色为深灰色 */
    padding: 20px 0;
    /* 上下内边距20px */
    text-align: center;
    /* 文本居中对齐 */
    position: sticky;
    /* 使头部在滚动时固定在顶部 */
    top: 0;
    /* 固定位置为顶部 */
    z-index: 1000;
    /* 确保头部在最上层 */
    transition: background-color 0.5s;
    /* 背景颜色变化时的过渡效果 */
}

header:hover {
    background-color: rgb(99, 101, 136);
    /* 鼠标悬停时背景颜色变化 */
}

/* 导航栏链接样式 */
.navbar a {
    color: rgb(39, 36, 108);
    /* 设置链接颜色为深蓝色 */
    text-decoration: none;
    /* 去掉下划线 */
    font-weight: bold;
    /* 字体加粗 */
    transition: color 0.3s;
    /* 链接颜色变化时的过渡效果 */
}

.navbar a:hover {
    color: #ddd;
    /* 鼠标悬停时链接颜色变化 */
}

.timeline {
    position: relative;
    max-width: 1800px;
    margin: 20px auto;
    padding: auto;
    background-color: #2a266600;
    border-radius: 6px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.timeline::after {
    content: '';
    position: absolute;
    width: 6px;
    background-color: #3c6792;/*中间那根穿插的线*/
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -px;
}

.timeline-item {
    padding: 20px 30px;
    position: relative;
    background-color: inherit;
    width: 50%;
}

.timeline-item::after {
    content: '';
    position: absolute;
    width: 25px;
    height: 25px;
    right: -12px;
    background-color: rgba(255, 255, 255, 0);
    border: 4px solid #ff9f55;
    top: 15px;
    border-radius: 50%;
    z-index: 1;
}

.timeline-item-left {
    left: -53px;
}

.timeline-item-right {
    left: 50%;
}

.timeline-item-right::after {
    left: -12px;
}

.timeline-item-content {
    padding: 20px;
    background-color: rgba(82, 55, 235, 0.829);
    position: relative;
    border-radius: 6px;
    box-shadow: 0 0 5px rgba(0, 0, 0, 0.1);
}

.timeline-item-content h3 {
    margin-top: 0;
    color: #ff9f55;
}

.timeline-item-content p {
    margin: 0;
}

/* 星空背景样式 */
.star-background {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: -1;
    overflow: hidden;
}

.starsec,
.starthird,
.starfourth,
.starfifth {
    position: absolute;
    width: 3px;
    height: 3px;
    background: transparent;
    animation: animStar 150s linear infinite;
}

.starsec {
    box-shadow: 571px 173px #00BCD4, 1732px 143px #00BCD4, 1745px 454px #FF5722, 234px 784px #00BCD4, 1793px 1123px #FF9800, 1076px 504px #03A9F4, 633px 601px #FF5722, 350px 630px #FFEB3B, 1164px 782px #00BCD4, 76px 690px #3F51B5, 1825px 701px #CDDC39, 1646px 578px #FFEB3B, 544px 293px #2196F3, 445px 1061px #673AB7, 928px 47px #00BCD4, 168px 1410px #8BC34A, 777px 782px #9C27B0, 1235px 1941px #9C27B0, 104px 1690px #8BC34A, 1167px 1338px #E91E63, 345px 1652px #009688, 1682px 1196px #F44336, 1995px 494px #8BC34A, 428px 798px #FF5722, 340px 1623px #F44336, 605px 349px #9C27B0, 1339px 1344px #673AB7, 1102px 1745px #3F51B5, 1592px 1676px #2196F3, 419px 1024px #FF9800, 630px 1033px #4CAF50, 1995px 1644px #00BCD4, 1092px 712px #9C27B0, 1355px 606px #F44336, 622px 1881px #CDDC39, 1481px 621px #9E9E9E, 19px 1348px #8BC34A, 864px 1780px #E91E63, 442px 1136px #2196F3, 67px 712px #FF5722, 89px 1406px #F44336, 275px 321px #009688, 592px 630px #E91E63, 1012px 1690px #9C27B0, 1749px 23px #673AB7, 94px 1542px #FFEB3B, 1201px 1657px #3F51B5, 1505px 692px #2196F3, 1799px 601px #03A9F4, 656px 811px #00BCD4, 701px 597px #00BCD4, 1202px 46px #FF5722, 890px 569px #FF5722, 1613px 813px #2196F3, 223px 252px #FF9800, 983px 1093px #F44336, 726px 1029px #FFC107, 1764px 778px #CDDC39, 622px 1643px #F44336, 174px 1559px #673AB7, 212px 517px #00BCD4, 340px 505px #FFF, 1700px 39px #FFF, 1768px 516px #F44336, 849px 391px #FF9800, 228px 1824px #FFF, 1119px 1680px #FFC107, 812px 1480px #3F51B5, 1438px 1585px #CDDC39, 137px 1397px #FFF, 1080px 456px #673AB7, 1208px 1437px #03A9F4, 857px 281px #F44336, 1254px 1306px #CDDC39, 987px 990px #4CAF50, 1655px 911px #00BCD4, 1102px 1216px #FF5722, 1807px 1044px #FFF, 660px 435px #03A9F4, 299px 678px #4CAF50, 1193px 115px #FF9800, 918px 290px #CDDC39, 1447px 1422px #FFEB3B, 91px 1273px #9C27B0, 108px 223px #FFEB3B, 146px 754px #00BCD4, 461px 1446px #FF5722, 1004px 391px #673AB7, 1529px 516px #F44336, 1206px 845px #CDDC39, 347px 583px #009688, 1102px 1332px #F44336, 709px 1756px #00BCD4, 1972px 248px #FFF, 1669px 1344px #FF5722, 1132px 406px #F44336, 320px 1076px #CDDC39, 126px 943px #FFEB3B, 263px 604px #FF5722, 1546px 692px #F44336;;
}

.starthird {
    box-shadow: 571px 173px #00BCD4, 1732px 143px #00BCD4, 1745px 454px #FF5722, 234px 784px #00BCD4, 1793px 1123px #FF9800, 1076px 504px #03A9F4, 633px 601px #FF5722, 350px 630px #FFEB3B, 1164px 782px #00BCD4, 76px 690px #3F51B5, 1825px 701px #CDDC39, 1646px 578px #FFEB3B, 544px 293px #2196F3, 445px 1061px #673AB7, 928px 47px #00BCD4, 168px 1410px #8BC34A, 777px 782px #9C27B0, 1235px 1941px #9C27B0, 104px 1690px #8BC34A, 1167px 1338px #E91E63, 345px 1652px #009688, 1682px 1196px #F44336, 1995px 494px #8BC34A, 428px 798px #FF5722, 340px 1623px #F44336, 605px 349px #9C27B0, 1339px 1344px #673AB7, 1102px 1745px #3F51B5, 1592px 1676px #2196F3, 419px 1024px #FF9800, 630px 1033px #4CAF50, 1995px 1644px #00BCD4, 1092px 712px #9C27B0, 1355px 606px #F44336, 622px 1881px #CDDC39, 1481px 621px #9E9E9E, 19px 1348px #8BC34A, 864px 1780px #E91E63, 442px 1136px #2196F3, 67px 712px #FF5722, 89px 1406px #F44336, 275px 321px #009688, 592px 630px #E91E63, 1012px 1690px #9C27B0, 1749px 23px #673AB7, 94px 1542px #FFEB3B, 1201px 1657px #3F51B5, 1505px 692px #2196F3, 1799px 601px #03A9F4, 656px 811px #00BCD4, 701px 597px #00BCD4, 1202px 46px #FF5722, 890px 569px #FF5722, 1613px 813px #2196F3, 223px 252px #FF9800, 983px 1093px #F44336, 726px 1029px #FFC107, 1764px 778px #CDDC39, 622px 1643px #F44336, 174px 1559px #673AB7, 212px 517px #00BCD4, 340px 505px #FFF, 1700px 39px #FFF, 1768px 516px #F44336, 849px 391px #FF9800, 228px 1824px #FFF, 1119px 1680px #FFC107, 812px 1480px #3F51B5, 1438px 1585px #CDDC39, 137px 1397px #FFF, 1080px 456px #673AB7, 1208px 1437px #03A9F4, 857px 281px #F44336, 1254px 1306px #CDDC39, 987px 990px #4CAF50, 1655px 911px #00BCD4, 1102px 1216px #FF5722, 1807px 1044px #FFF, 660px 435px #03A9F4, 299px 678px #4CAF50, 1193px 115px #FF9800, 918px 290px #CDDC39, 1447px 1422px #FFEB3B, 91px 1273px #9C27B0, 108px 223px #FFEB3B, 146px 754px #00BCD4, 461px 1446px #FF5722, 1004px 391px #673AB7, 1529px 516px #F44336, 1206px 845px #CDDC39, 347px 583px #009688, 1102px 1332px #F44336, 709px 1756px #00BCD4, 1972px 248px #FFF, 1669px 1344px #FF5722, 1132px 406px #F44336, 320px 1076px #CDDC39, 126px 943px #FFEB3B, 263px 604px #FF5722, 1546px 692px #F44336;
    animation-duration: 100s;
}

.starfourth {
    width: 2px;
    height: 2px;
    box-shadow: 571px 173px #00BCD4, 1732px 143px #00BCD4, 1745px 454px #FF5722, 234px 784px #00BCD4, 1793px 1123px #FF9800, 1076px 504px #03A9F4, 633px 601px #FF5722, 350px 630px #FFEB3B, 1164px 782px #00BCD4, 76px 690px #3F51B5, 1825px 701px #CDDC39, 1646px 578px #FFEB3B, 544px 293px #2196F3, 445px 1061px #673AB7, 928px 47px #00BCD4, 168px 1410px #8BC34A, 777px 782px #9C27B0, 1235px 1941px #9C27B0, 104px 1690px #8BC34A, 1167px 1338px #E91E63, 345px 1652px #009688, 1682px 1196px #F44336, 1995px 494px #8BC34A, 428px 798px #FF5722, 340px 1623px #F44336, 605px 349px #9C27B0, 1339px 1344px #673AB7, 1102px 1745px #3F51B5, 1592px 1676px #2196F3, 419px 1024px #FF9800, 630px 1033px #4CAF50, 1995px 1644px #00BCD4, 1092px 712px #9C27B0, 1355px 606px #F44336, 622px 1881px #CDDC39, 1481px 621px #9E9E9E, 19px 1348px #8BC34A, 864px 1780px #E91E63, 442px 1136px #2196F3, 67px 712px #FF5722, 89px 1406px #F44336, 275px 321px #009688, 592px 630px #E91E63, 1012px 1690px #9C27B0, 1749px 23px #673AB7, 94px 1542px #FFEB3B, 1201px 1657px #3F51B5, 1505px 692px #2196F3, 1799px 601px #03A9F4, 656px 811px #00BCD4, 701px 597px #00BCD4, 1202px 46px #FF5722, 890px 569px #FF5722, 1613px 813px #2196F3, 223px 252px #FF9800, 983px 1093px #F44336, 726px 1029px #FFC107, 1764px 778px #CDDC39, 622px 1643px #F44336, 174px 1559px #673AB7, 212px 517px #00BCD4, 340px 505px #FFF, 1700px 39px #FFF, 1768px 516px #F44336, 849px 391px #FF9800, 228px 1824px #FFF, 1119px 1680px #FFC107, 812px 1480px #3F51B5, 1438px 1585px #CDDC39, 137px 1397px #FFF, 1080px 456px #673AB7, 1208px 1437px #03A9F4, 857px 281px #F44336, 1254px 1306px #CDDC39, 987px 990px #4CAF50, 1655px 911px #00BCD4, 1102px 1216px #FF5722, 1807px 1044px #FFF, 660px 435px #03A9F4, 299px 678px #4CAF50, 1193px 115px #FF9800, 918px 290px #CDDC39, 1447px 1422px #FFEB3B, 91px 1273px #9C27B0, 108px 223px #FFEB3B, 146px 754px #00BCD4, 461px 1446px #FF5722, 1004px 391px #673AB7, 1529px 516px #F44336, 1206px 845px #CDDC39, 347px 583px #009688, 1102px 1332px #F44336, 709px 1756px #00BCD4, 1972px 248px #FFF, 1669px 1344px #FF5722, 1132px 406px #F44336, 320px 1076px #CDDC39, 126px 943px #FFEB3B, 263px 604px #FF5722, 1546px 692px #F44336;
}

.starfifth {
    width: 1px;
    height: 1px;
    box-shadow: 571px 173px #00BCD4, 1732px 143px #00BCD4, 1745px 454px #FF5722, 234px 784px #00BCD4, 1793px 1123px #FF9800, 1076px 504px #03A9F4, 633px 601px #FF5722, 350px 630px #FFEB3B, 1164px 782px #00BCD4, 76px 690px #3F51B5, 1825px 701px #CDDC39, 1646px 578px #FFEB3B, 544px 293px #2196F3, 445px 1061px #673AB7, 928px 47px #00BCD4, 168px 1410px #8BC34A, 777px 782px #9C27B0, 1235px 1941px #9C27B0, 104px 1690px #8BC34A, 1167px 1338px #E91E63, 345px 1652px #009688, 1682px 1196px #F44336, 1995px 494px #8BC34A, 428px 798px #FF5722, 340px 1623px #F44336, 605px 349px #9C27B0, 1339px 1344px #673AB7, 1102px 1745px #3F51B5, 1592px 1676px #2196F3, 419px 1024px #FF9800, 630px 1033px #4CAF50, 1995px 1644px #00BCD4, 1092px 712px #9C27B0, 1355px 606px #F44336, 622px 1881px #CDDC39, 1481px 621px #9E9E9E, 19px 1348px #8BC34A, 864px 1780px #E91E63, 442px 1136px #2196F3, 67px 712px #FF5722, 89px 1406px #F44336, 275px 321px #009688, 592px 630px #E91E63, 1012px 1690px #9C27B0, 1749px 23px #673AB7, 94px 1542px #FFEB3B, 1201px 1657px #3F51B5, 1505px 692px #2196F3, 1799px 601px #03A9F4, 656px 811px #00BCD4, 701px 597px #00BCD4, 1202px 46px #FF5722, 890px 569px #FF5722, 1613px 813px #2196F3, 223px 252px #FF9800, 983px 1093px #F44336, 726px 1029px #FFC107, 1764px 778px #CDDC39, 622px 1643px #F44336, 174px 1559px #673AB7, 212px 517px #00BCD4, 340px 505px #FFF, 1700px 39px #FFF, 1768px 516px #F44336, 849px 391px #FF9800, 228px 1824px #FFF, 1119px 1680px #FFC107, 812px 1480px #3F51B5, 1438px 1585px #CDDC39, 137px 1397px #FFF, 1080px 456px #673AB7, 1208px 1437px #03A9F4, 857px 281px #F44336, 1254px 1306px #CDDC39, 987px 990px #4CAF50, 1655px 911px #00BCD4, 1102px 1216px #FF5722, 1807px 1044px #FFF, 660px 435px #03A9F4, 299px 678px #4CAF50, 1193px 115px #FF9800, 918px 290px #CDDC39, 1447px 1422px #FFEB3B, 91px 1273px #9C27B0, 108px 223px #FFEB3B, 146px 754px #00BCD4, 461px 1446px #FF5722, 1004px 391px #673AB7, 1529px 516px #F44336, 1206px 845px #CDDC39, 347px 583px #009688, 1102px 1332px #F44336, 709px 1756px #00BCD4, 1972px 248px #FFF, 1669px 1344px #FF5722, 1132px 406px #F44336, 320px 1076px #CDDC39, 126px 943px #FFEB3B, 263px 604px #FF5722, 1546px 692px #F44336;
    animation-duration: 80s;
}

.intro {
    text-align: center;
    padding: 50px 20px;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 1s forwards;
}

.profile-pic {
    border-radius: 50%;
    width: 150px;
    height: 150px;
    transition: transform 0.5s;
}

.profile-pic:hover {
    transform: scale(1.1);
}

.description {
    font-size: 1.2em;
    margin-top: 20px;
    animation: fadeIn 2s 1s both;
}

@keyframes animStar {
    0% {
        transform: translateY(0px);
    }

    /* 动画开始时不移动 */
    100% {
        transform: translateY(-2000px);
    }

    /* 动画结束时向上移动2000像素 */
}

/* 半透明文字框容器样式 */
.skills,
.timekeeper,
.tools,
.contact {
    padding: 20px;
    /* 内边距为20px */
    background-color: rgba(255, 255, 255, 0.103);
    /* 强制设置为半透明白色 */
    margin: 20px;
    /* 外边距为20px */
    border-radius: 10px;
    /* 圆角边框 */
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    /* 轻微阴影 */
    transition: transform 0.3s, box-shadow 0.3s;
    /* 变换和阴影变化时的过渡效果 */
    color: #ffffffb2;
    /* 设置字体颜色为深灰色 */
}

/* 鼠标悬停时的效果 */
.skills:hover,
.timekeeper:hover,
.tools:hover,
.contact:hover {
    transform: translateY(-10px);
    /* 鼠标悬停时上移10px */
    box-shadow: 0 20px 30px rgba(0, 0, 0, 0.2);
    /* 增加阴影效果 */
}

/* 各部分标题样式 */
.skills h2,
.timekeeper h2,
.tools h2,
.contact h2 {
    text-align: center;
    /* 文本居中 */
    animation: fadeIn 2s 0.5s both;
    /* 渐变显示的动画 */
    color: #ffffffb2;
    /* 设置标题颜色为深灰色 */
}

/* 列表样式 */
ul {
    list-style-type: none;
    /* 去掉列表标记 */
    padding: 0;
    /* 清除默认内边距 */
    font-size: 1.1em;
    /* 设置字体大小 */
    color: #ffffffb2;
    /* 设置字体颜色为中灰色 */
}

li {
    margin: 10px 0;
    /* 列表项上下边距为10px */
}

/* 页脚样式 */
footer {
    text-align: center;
    /* 文本居中对齐 */
    padding: 10px;
    /* 内边距为10px */
    background-color: rgba(51, 51, 51, 0.9);
    /* 半透明深灰色背景 */
    color: #f5f5f5;
    /* 设置字体颜色为接近白色 */
}

/* 动画效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
    }

    /* 动画开始时透明度为0 */
    to {
        opacity: 1;
    }

    /* 动画结束时透明度为1 */
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    /* 动画开始时向下移动20px，透明度为0 */
    to {
        opacity: 1;
        transform: translateY(0);
    }

    /* 动画结束时透明度为1，并恢复到原位置 */
}