/* 改动声明：本文件由 AI 教学改革实践研究计划（aiketi.edu360.cn）于 2026-09-19 修改：界面文字中文化补丁。原作 https://github.com/mlu-explain/mlu-explain.github.io（e6046857f5），许可 CC BY-SA 4.0 (文) + MIT-0 (码)，许可原文见 /_exhibit/licenses/mlu-explain.txt */
/* 中文镜像替换：原作在此定义 4 个专有字族（Amazon 自有字体），其字体许可明确禁止在其他网站使用，故整体剔除字体文件与字族定义，改为只从访问者本机已安装的中文字体取字，不加载任何字体文件 */@font-face{font-family:MLUZhSans;src:local("PingFang SC"),local("Noto Sans SC"),local("Source Han Sans SC"),local("Microsoft YaHei"),local("Heiti SC"),local("Hiragino Sans GB");font-weight:400;font-style:normal}@font-face{font-family:MLUZhHeavy;src:local("PingFang SC Semibold"),local("Noto Sans SC Bold"),local("Source Han Sans SC Bold"),local("Microsoft YaHei Bold"),local("Heiti SC Medium"),local("Hiragino Sans GB W6");font-weight:700;font-style:normal}@font-face{font-family:MLUZhLight;src:local("PingFang SC Light"),local("Noto Sans SC Light"),local("Source Han Sans SC Light"),local("Microsoft YaHei Light"),local("Heiti SC"),local("Hiragino Sans GB W3");font-weight:300;font-style:normal}@font-face{font-family:MLUZhMono;src:local("Menlo"),local("SFMono-Regular"),local("Consolas"),local("DejaVu Sans Mono"),local("Courier New");font-weight:400;font-style:normal}.wbo-header,body>div.content-wrapper>div.container-fluid.wbo-header,footer{display:none}html{font-size:16px}*{box-sizing:border-box}body,html{margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Open Sans,Helvetica Neue,sans-serif;min-height:1280px;color:#3b3b3b;font-size:24px}p.intro-text{font-size:21px;text-align:left;color:#fff;font-family:MLUZhSans,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,Source Han Sans SC,WenQuanYi Micro Hei,Helvetica Neue,Arial,sans-serif}a,h1,h2,h3,h4,p{margin:0;font-weight:400}a:hover,a:visited{color:#08b7b7;text-decoration:none}a{text-decoration:underline;color:#08b7b7;font-family:MLUZhHeavy,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,Source Han Sans SC,Helvetica Neue,Arial,sans-serif}a:hover{color:#fff;background-color:#08b7b7;text-decoration:none}.bold{font-family:MLUZhHeavy,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,Source Han Sans SC,Helvetica Neue,Arial,sans-serif}#intro{max-width:55rem;margin:1rem auto;text-align:center;padding-top:3rem}#intro-hed{font-size:6.5rem;letter-spacing:1.5px;text-transform:uppercase;max-width:100%;margin:auto;color:#fff}#intro-hed,.intro-sub{font-family:MLUZhHeavy,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,Source Han Sans SC,Helvetica Neue,Arial,sans-serif}.intro-sub{font-size:2.2rem;text-align:center;margin:1rem;opacity:.75;color:#08b7b7;padding:2rem}#intro__author,#intro__date{font-size:1.1rem;font-family:MLUZhSans,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,Source Han Sans SC,WenQuanYi Micro Hei,Helvetica Neue,Arial,sans-serif;margin:15px 0 0;color:#fff;padding-bottom:5rem}#intro__author a,#intro__date a{color:#fff}.model-header{padding-top:5rem;font-family:MLUZhHeavy,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,Source Han Sans SC,Helvetica Neue,Arial,sans-serif;padding-bottom:.5rem;font-weight:700;font-size:1.3rem}.model-header,.model-text{max-width:45rem;margin:0 auto;text-align:left}.model-text{font-size:21px;line-height:1.5em;font-family:MLUZhSans,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,Source Han Sans SC,WenQuanYi Micro Hei,Helvetica Neue,Arial,sans-serif}.github-corner:hover .octo-arm{animation:octocat-wave .56s ease-in-out}@keyframes octocat-wave{0%,to{transform:rotate(0)}20%,60%{transform:rotate(-25deg)}40%,80%{transform:rotate(10deg)}}#intro{margin-bottom:4rem}#outro{height:640px}.tooltip-item{position:relative;display:inline-block;color:#08b7b7;font-family:MLUZhHeavy,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,Source Han Sans SC,Helvetica Neue,Arial,sans-serif}.tooltip-item .tooltiptext{font-size:1rem;visibility:hidden;background-color:#fff;color:#232f3e;text-align:center;padding:2px;bottom:30%;position:absolute;z-index:1;border:2px solid #232f3e;font-family:MLUZhSans,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,Source Han Sans SC,WenQuanYi Micro Hei,Helvetica Neue,Arial,sans-serif;border-radius:5px}.tooltip-item:hover .tooltiptext{visibility:visible;font-weight:700}ul{list-style-position:outside;max-width:45rem;margin:0 auto;font-size:1.2rem;line-height:1.5em;font-family:MLUZhSans,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,Source Han Sans SC,WenQuanYi Micro Hei,Helvetica Neue,Arial,sans-serif}li,ul{text-align:left}li{font-size:21px;padding-bottom:8px;font-family:MLUZhLight,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,Source Han Sans SC,Helvetica Neue,Arial,sans-serif}li a{font-family:MLUZhHeavy,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,Source Han Sans SC,Helvetica Neue,Arial,sans-serif}body{background-color:#232f3e}.model-header,.section-title{font-family:MLUZhHeavy,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,Source Han Sans SC,Helvetica Neue,Arial,sans-serif;font-size:2.2rem}.section-title{padding-bottom:2rem;padding-left:10%;padding-top:2rem;text-align:left}#scrolly{position:relative;padding:1rem}#scrolly article{position:relative;padding:0;max-width:55%;margin:0 auto}#scrolly figure{position:-webkit-sticky;position:sticky;left:0;width:100%;margin:0;-webkit-transform:translateZ(0);-moz-transform:translateZ(0);transform:translateZ(0);z-index:-999}#scrolly .step{margin:0 auto 2rem;color:#fff;width:100%}#scrolly .step:last-child{margin-bottom:0}#scrolly .step p{text-align:center;padding:1rem;font-size:21px;background-color:#fff;color:#232f3e;box-shadow:0 0 10px 2px hsla(0,0%,41.2%,.25)}#scrolly .axis{stroke:#fff}#scrolly-side{position:relative;display:-webkit-box;display:-ms-flexbox;display:flex;background-color:#feefd7;padding:5rem 10rem 10rem;justify-content:center}#scrolly-side article{position:relative;padding:0 1rem;max-width:33rem}#scrolly-side figure{position:-webkit-sticky;position:sticky;width:100%;margin:0;-webkit-transform:translateZ(0);-moz-transform:translateZ(0);transform:translateZ(0);z-index:1;vertical-align:center}#scrolly-side .step-side{margin:0 auto 2rem;color:#232f3e}#scrolly-side .step-side:last-child{margin-bottom:0}#scrolly-side .step-side p{text-align:center;padding:1rem 0 1rem 1rem;font-size:21px;font-family:MLUZhSans,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,Source Han Sans SC,WenQuanYi Micro Hei,Helvetica Neue,Arial,sans-serif}#scrolly-side .axis{font-family:MLUZhHeavy,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,Source Han Sans SC,Helvetica Neue,Arial,sans-serif}#scrolly-side .tick line{opacity:.2;stroke-width:1}#scrolly-side #error-y-axis .domain,#scrolly-side #scatter-y-axis .domain{opacity:0}#scrolly-side #error-x-axis,#scrolly-side #scatter-x-axis{font-size:.7rem}#scrolly-side #error-x-axis .domain,#scrolly-side #scatter-x-axis .domain{stroke-width:2}#scrolly-side>*{-webkit-box-flex:1;-ms-flex:1;flex:1}#mobile-break{display:none}#dd-title{fill:#fff;font-size:2rem;font-family:MLUZhHeavy,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,Source Han Sans SC,Helvetica Neue,Arial,sans-serif}.dd-text{font-size:.85rem;color:#fff}.dd-text,.rect-text{font-family:MLUZhLight,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,Source Han Sans SC,Helvetica Neue,Arial,sans-serif}.rect-text{font-size:.9rem;fill:#fff}.dd-annotation-text{font-family:MLUZhHeavy,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,Source Han Sans SC,Helvetica Neue,Arial,sans-serif;stroke-linejoin:round;fill:#fff;paint-order:stroke fill;stroke:#037575;stroke:#000;stroke-width:4px;font-size:1.1rem}.dd-line{fill:none;stroke-width:5}.dd-line-outline{fill:none;stroke-width:8;stroke:#fff;opacity:.8}#arrowhead-left,#arrowhead-right{stroke:#fff}#dd-line-train{stroke:#08b7b7}#dd-line-test{stroke:#ff8f00}.dd-circle{stroke:#232f3e}#dd-circle-train{fill:#08b7b7}#dd-circle-test{fill:#ff8f00}#dd-x-axis .tick{opacity:0}.dd-axis-text{font-size:1.3rem;fill:#fff;font-family:MLUZhLight,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,Source Han Sans SC,Helvetica Neue,Arial,sans-serif}#dd-y-axis line{stroke-width:1.5;stroke:#fff;opacity:.2}#dd-y-axis .domain{opacity:0}#dd-y-axis text{font-size:.9rem;stroke:none;fill:#fff;font-family:MLUZhHeavy,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,Source Han Sans SC,Helvetica Neue,Arial,sans-serif}#doubledescent-container{text-align:center}.dd-legend-text{fill:#fff;font-family:MLUZhLight,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,Source Han Sans SC,Helvetica Neue,Arial,sans-serif;font-size:1.1rem}.scatter-text{font-size:1rem}.scatter-circle{fill:#232f3e;stroke-width:1.5;stroke:#feefd7}#scatter-line{fill:none;opacity:.85;stroke:#ff8f00;stroke-width:4.5}#ttt{text-align:center;justify-content:center}.scatter-title{font-size:1.3rem;font-family:MLUZhHeavy,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,Source Han Sans SC,Helvetica Neue,Arial,sans-serif}.error-line{fill:none;stroke:#ff8f00;stroke-width:4}.error-axis-text{font-size:1.1rem;font-family:MLUZhHeavy,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,Source Han Sans SC,Helvetica Neue,Arial,sans-serif}.slider-container{width:90%}.metric-slider{-webkit-appearance:none;appearance:none;width:85%;height:.8rem;background:#232f3e;outline:none}.metric-slider:hover{opacity:1}.metric-slider::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:1rem;height:1.2rem;background:#ff8f00;border:1px solid #feefd7;cursor:pointer}.metric-slider::-moz-range-thumb{width:1rem;height:1.2rem;background:#ff8f00;border:1px solid #feefd7;cursor:pointer}#error-text{font-size:1.4rem;font-family:MLUZhHeavy,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,Source Han Sans SC,Helvetica Neue,Arial,sans-serif;color:#232f3e}.data-button{display:table;padding:0;margin:0;cursor:pointer;max-width:90%;text-align:center;font-size:.85rem;border:1px solid #e0e0e0;text-decoration:none;color:#232f3e;outline:none;border-radius:2px}#conclusion,#section2{background-color:#feefd7;margin-bottom:0;padding-bottom:0;text-align:center;justify-content:center}#gap{color:#fff}#gap-container{width:100%;height:auto;margin-top:10px;font-family:MLUZhSans,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,Source Han Sans SC,WenQuanYi Micro Hei,Helvetica Neue,Arial,sans-serif}#gap-container p{color:#fff}#gap-container img{width:100%;max-width:18rem;height:100%;max-height:240px;float:left;padding-right:1rem;padding-bottom:1rem}#slider-container-mobile{display:none}#top-note{font-family:MLUZhLight,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,Source Han Sans SC,Helvetica Neue,Arial,sans-serif;text-align:center;color:#fff;font-size:18px;font-style:italic;max-width:45rem;margin:auto;padding-bottom:2.5rem}.error-tooltip-text{font-family:MLUZhHeavy,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,Source Han Sans SC,Helvetica Neue,Arial,sans-serif;stroke-linejoin:round;fill:#232f3e;paint-order:stroke fill;stroke-width:4px;pointer-events:none;font-size:.9rem;stroke:#feefd7}@media (max-width:1100px){#intro{padding:10%}#intro-hed{margin-top:0}#intro-icon,#intro-icon h2{padding-bottom:0}#intro-icon h2{margin-bottom:0}.section-title{font-size:2.2rem}#conclusion,#gap-container{padding-top:0;font-family:MLUZhSans,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,Source Han Sans SC,WenQuanYi Micro Hei,Helvetica Neue,Arial,sans-serif}#conclusion .section-title,#gap-container .section-title{padding-left:0}#dd-title{font-size:2rem;font-stretch:50%}.dd-legend-text{font-size:1.1rem}.rect-text{font-size:.8rem}#scrolly .step p{font-size:1.1rem}#scrolly-side>article>div:nth-child(6) p{padding-bottom:0}#scrolly-side{position:relative;display:block;padding:1rem 1rem 10rem;z-index:2}#scrolly-side article{position:relative;padding:0;max-width:50%;margin:0 auto;font-family:MLUZhSans,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,Source Han Sans SC,WenQuanYi Micro Hei,Helvetica Neue,Arial,sans-serif;z-index:6}#scrolly-side #error-container,#scrolly-side #scatter-container{z-index:4}#scrolly-side figure{position:-webkit-sticky;position:sticky;width:100%;margin:0;-webkit-transform:translateZ(0);-moz-transform:translateZ(0);transform:translateZ(0);z-index:4}#scrolly-side .step-side{margin:0 auto 2rem;color:#fff;width:100%;z-index:100}#scrolly-side .step-side:last-child{margin-bottom:0}#scrolly-side .step-side p{text-align:center;padding:1rem;font-size:1rem;background-color:#feefd7;color:#000;box-shadow:0 0 10px 2px hsla(0,0%,41.2%,.25);z-index:100}#slider-container{background-color:#feefd7;box-shadow:0 10px 10px 0 hsla(0,0%,41.2%,.25)}}@media (max-width:600px){#gap-container img{padding:4% 4% 1.5rem;max-width:none}.scatter-title{font-size:.95rem}.error-axis-text{font-size:.85rem;font-family:MLUZhHeavy,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,Source Han Sans SC,Helvetica Neue,Arial,sans-serif}#top-note{font-size:17px;padding-bottom:2.5rem}#intro{padding:5px}#intro-hed{margin-top:0;font-size:3.6rem;padding-top:3rem}#intro-icon,#intro-icon h2{padding-bottom:0}#intro-icon h2{margin-bottom:0}p.intro-text{line-height:1.5;font-size:17.5px;max-width:500px}.section-title{font-size:2.2rem;text-align:center;padding-bottom:1.5rem}.body-text,.model-text{padding:4%;line-height:1.5;font-size:17.5px;max-width:500px}.model-header{padding-top:2rem;font-size:1.75rem;padding-left:4%}li,ul{font-size:17px;line-height:1.5}.error-tooltip-text{stroke-width:2px;font-size:.75rem}#scrolly-side article,#scrolly article{max-width:90%}#dd-title{font-size:1.2rem;font-stretch:50%}.dd-legend-text{font-size:1rem}.dd-axis-text{font-size:.9rem}#dd-y-axis text{font-size:.75rem;stroke:none;fill:#fff;font-family:MLUZhHeavy,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,Source Han Sans SC,Helvetica Neue,Arial,sans-serif}#dd-line-test,#dd-line-train{stroke-width:1.9}.dd-line-outline{stroke-width:3.7;opacity:.8}.dd-annotation-text{font-size:.7rem;stroke-width:2px}#scrolly{padding:.1rem}#scrolly figure{padding-top:20%}#scrolly .step p{font-size:17px}.step-side{height:100vh}#error-text{font-size:1rem}#slider-container{padding:1rem}}#ai{color:#08b7b7;font-family:MLUZhHeavy,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,Source Han Sans SC,Helvetica Neue,Arial,sans-serif}.logo{color:#232f3e}.bolder{font-family:MLUZhHeavy,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,Source Han Sans SC,Helvetica Neue,Arial,sans-serif}#intro-icon{display:flex;text-transform:uppercase;font-weight:700;color:#08b7b7;flex-direction:row;padding-top:1rem;justify-content:center}#intro-icon h2{padding-left:5%;font-family:MLUZhHeavy,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,Source Han Sans SC,Helvetica Neue,Arial,sans-serif;font-size:21px;margin-top:10px;margin-bottom:10px}#intro-icon>a{display:flex;text-decoration:none;padding-top:1rem;padding-bottom:1rem}.logo{color:#fff;width:10rem}#intro-icon a:hover{background-color:#232f3e}article{z-index:999999}#intro .model-text,#intro p.body-text{color:#fff}
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