:root{--paper:#f3f7fb;--surface:#fff;--ink:#233747;--muted:#647586;--teal:#287b73;--blue:#405fce;--blue-soft:#e7edfc;--mint:#e5f1ec;--lilac:#eee9f7;--line:#dce5ed;--display:"Avenir Next","Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;--body:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;--mono:"SFMono-Regular",Consolas,monospace}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:34px}body{margin:0;color:var(--ink);background:var(--paper);font:16px/1.7 var(--body);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button{font:inherit;cursor:pointer;color:inherit}img{max-width:100%;height:auto;display:block}svg{max-width:100%}h1,h2,h3,p{margin:0}h1,h2,h3{font-family:var(--display);line-height:1.2;font-weight:600}h1{letter-spacing:-.055em}h2{letter-spacing:-.035em}h3{letter-spacing:-.025em}p{color:var(--muted)}a,button{-webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--blue);outline-offset:5px;border-radius:5px}::selection{background:#d9e7ed;color:var(--ink)}[hidden]{display:none!important}.icon{display:inline-block;width:21px;height:21px;flex:none;vertical-align:middle;stroke-width:1.65;fill:none;stroke:currentColor;stroke-linecap:round;stroke-linejoin:round}.skip-link{position:fixed;left:20px;top:-100px;z-index:100;background:var(--ink);color:white;padding:12px 20px}.skip-link:focus{top:12px}
.site-header{max-width:1424px;margin:auto;min-height:104px;padding:24px 44px;display:flex;align-items:center;gap:24px;border-bottom:1px solid var(--line)}.brand{display:inline-flex;align-items:baseline;font-family:var(--display);font-size:42px;letter-spacing:-.075em;font-weight:750;line-height:1}.brand>span{color:var(--teal)}.brand small{font:10px var(--mono);letter-spacing:.02em;margin-left:17px;color:var(--muted)}.primary-nav{display:flex;gap:7px;margin-left:auto}.primary-nav>a{display:flex;align-items:center;gap:7px;font-size:13px;color:var(--muted);padding:10px 13px;border-radius:9px}.primary-nav .icon{width:17px;height:17px}.primary-nav>a:hover{background:#e8eef5;color:var(--blue)}.primary-nav>[aria-current]{background:var(--blue-soft);color:var(--blue)}.language-toggle{display:inline-flex;align-items:center;gap:8px;background:white;border:1px solid var(--line);padding:9px 13px;border-radius:9px;font-size:12px;white-space:nowrap}.language-toggle .icon{width:17px;height:17px}.page-shell{max-width:1424px;margin:auto;padding:0 44px;display:grid;grid-template-columns:minmax(0,1fr) 164px;gap:54px}main{min-width:0}.page-rail{border-left:1px solid var(--line);padding-left:23px;position:relative}.rail-inner{position:sticky;top:44px;padding-top:54px}.rail-inner>p{font:9px var(--mono);letter-spacing:.14em;color:#778a9a;margin-bottom:20px}.rail-inner nav{display:flex;flex-direction:column;gap:7px}.rail-inner nav a,.rail-bottom a{display:flex;align-items:center;gap:10px;font-size:11px;line-height:1.5;color:var(--muted);padding:9px 0;position:relative}.rail-inner nav .icon,.rail-bottom .icon{height:16px;width:16px}.rail-inner nav a:hover,.rail-inner nav a[aria-current]{color:var(--blue)}.rail-inner nav a[aria-current]:before{content:"";width:3px;position:absolute;left:-25px;top:7px;bottom:7px;background:var(--blue);border-radius:3px}.rail-bottom{border-top:1px solid var(--line);padding-top:14px;margin-top:30px}.rail-bottom a{font-size:10px}.site-footer{max-width:1424px;margin:auto;padding:34px 44px;display:flex;align-items:center;gap:28px;border-top:1px solid var(--line)}.site-footer .brand{font-size:32px}.site-footer p{font-size:11px;line-height:1.8}.site-footer>div{display:flex;gap:22px;margin-left:auto}
.eyebrow{display:flex;align-items:center;gap:9px;font:10px/1.5 var(--mono);letter-spacing:.11em;color:var(--teal);margin-bottom:18px}.eyebrow .icon{width:17px;height:17px}.hero{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:28px;padding:74px 0 62px;min-height:620px}.hero-copy{position:relative;z-index:1}.hero .eyebrow{font-size:8px;letter-spacing:.08em;white-space:nowrap}.hello{font-family:var(--display);font-size:19px;font-weight:550;color:var(--ink);margin-bottom:13px}.hero h1{font-size:clamp(42px,4.25vw,64px);line-height:1.12}.accent-text{color:var(--blue)}.hero-lead{font-size:16px;line-height:1.8;max-width:370px;margin-top:23px}.hero-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:28px}.button{display:inline-flex;justify-content:center;align-items:center;gap:10px;padding:12px 17px;border-radius:9px;border:1px solid var(--line);font-size:12px;font-weight:550;transition:transform .18s,box-shadow .18s,background .18s}.button .icon{width:17px;height:17px}.button:hover{transform:translateY(-2px);box-shadow:0 6px 18px #2337470b}.button.primary{background:var(--blue);color:white;border-color:var(--blue)}.button.primary:hover{background:#334fae}.button.quiet{background:var(--surface)}.identity-line{display:flex;flex-wrap:wrap;gap:9px;align-items:center;font-size:9px;color:var(--muted);margin-top:24px}.identity-line>.icon{width:13px;height:13px}.identity-line>span:last-child{border-left:1px solid var(--line);padding-left:9px}.fieldboard{height:440px;position:relative;background:radial-gradient(ellipse at 58% 46%,#ddebe9 0%,#e9eef8 36%,transparent 67%)}.board-label{position:absolute;top:12px;left:20px;font:8px var(--mono);letter-spacing:.1em;color:#6b8293}.portrait-note{position:absolute;width:63%;padding:12px 12px 10px;background:#fff;box-shadow:0 16px 40px #24415214;top:54px;right:14px;transform:rotate(6deg);border:1px solid #e7edf2;border-radius:4px}.portrait-note img{width:100%;aspect-ratio:1;object-fit:contain}.portrait-note>div{display:flex;align-items:center;gap:7px;margin-top:9px;font-size:8px;color:var(--muted)}.portrait-note .icon{height:12px;width:12px;color:#b77f90}.board-tag{position:absolute;z-index:2;padding:12px 15px;display:flex;align-items:center;gap:8px;font-size:10px;background:#fff;border:1px solid #dce5ed;border-radius:9px;box-shadow:0 8px 30px #23374709;transition:transform .2s}.board-tag .icon{color:var(--teal);width:17px;height:17px}.board-tag .icon:last-child:not(:first-child){width:12px}.board-tag:hover{transform:translateY(-3px)}.tag-top{top:34px;left:14px}.tag-bottom{bottom:30px;right:0;background:#e5edfc;color:var(--blue);border-color:#d4def6}.tag-bottom .icon{color:var(--blue)}.graph-note{position:absolute;bottom:45px;left:-8px;width:64%;padding:5px 6px 12px;background:linear-gradient(90deg,#ffffffaa,#ffffffed);border:1px solid #d9e3eb;box-shadow:0 8px 25px #27485f08;transform:rotate(-5deg);border-radius:8px}.graph-note>span{display:block;font-size:8px;color:var(--muted);padding-left:15px}.connection-graph{width:100%;display:block}.graph-lines{stroke:#9eb4c8;stroke-width:1;fill:none}.connection-graph text{font:600 14px var(--mono);fill:var(--ink);text-anchor:middle}.connection-graph a circle{stroke:#fff;stroke-width:5;transition:stroke-width .2s}.connection-graph a:hover circle,.connection-graph a:focus circle{stroke:#aabfe4;stroke-width:8}.board-scribble{position:absolute;bottom:0;left:6px;font:italic 12px Georgia,serif;color:#6a8796;transform:rotate(-2deg)}
.section{padding:55px 0;border-top:1px solid var(--line)}.section.compact{padding:40px 0}.section-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:22px;margin-bottom:29px}.section-heading h2{font-size:30px;line-height:1.3}.section-heading .eyebrow{margin-bottom:12px}.text-link{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:550;color:var(--blue)}.text-link .icon{width:16px;height:16px}.text-link:hover{text-decoration:underline;text-underline-offset:5px}.section-heading>.text-link{white-space:nowrap;padding-bottom:6px}.focus-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:25px}.focus-grid article{padding:23px 19px;background:#fff9;border:1px solid var(--line);border-radius:13px}.icon-tile{width:44px;height:44px;display:grid;place-items:center;background:var(--mint);border-radius:12px;color:var(--teal);margin-bottom:21px}.icon-tile .icon{width:24px;height:24px}.focus-grid article:nth-child(2) .icon-tile{background:var(--blue-soft);color:var(--blue)}.focus-grid article:nth-child(3) .icon-tile{background:var(--lilac);color:#82709d}.focus-grid h3{font-size:18px;margin-bottom:12px}.focus-grid p{font-size:12px;line-height:1.8}.project-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.project-grid.three{grid-template-columns:repeat(3,minmax(0,1fr));gap:17px}.project-card{--card-tint:var(--mint);--card-accent:var(--teal);border:1px solid var(--line);border-radius:15px;background:#fff;padding:26px;display:flex;flex-direction:column;min-width:0;transition:transform .2s,box-shadow .2s}.project-card:hover{transform:translateY(-4px);box-shadow:0 16px 32px #243b5010}.project-card.blue{--card-tint:var(--blue-soft);--card-accent:var(--blue)}.project-card.lilac{--card-tint:var(--lilac);--card-accent:#86749d}.project-top{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:24px}.project-symbol{width:58px;height:62px;display:grid;place-items:center;background:var(--card-tint);color:var(--card-accent);clip-path:polygon(50% 0,96% 23%,96% 77%,50% 100%,4% 77%,4% 23%)}.project-symbol>.icon{width:31px;height:31px;stroke-width:1.4}.type-label{font:8px/1.5 var(--mono);letter-spacing:.08em;color:var(--muted)}.project-card h3{font-size:25px;margin-bottom:12px;overflow-wrap:anywhere}.project-card>p{font-size:13px;line-height:1.8;margin-bottom:24px}.card-links{display:flex;gap:16px;align-items:center;flex-wrap:wrap;margin-top:auto}.three .project-card{padding:21px}.three .project-top{align-items:flex-start;flex-direction:column;gap:14px}.three .project-card h3{font-size:23px}.three .project-card>p{font-size:12px}.three .card-links{gap:13px}.three .text-link{font-size:11px}.education-band{display:flex;gap:24px;padding:13px 0}.education-band>.icon-tile{flex:none}.education-band h2{font-size:24px;margin-bottom:23px}.education-rows{display:grid;grid-template-columns:1fr 1fr;gap:35px}.education-rows p{font-size:13px;color:var(--ink)}.education-rows strong{display:block;font:11px var(--mono);color:var(--blue);margin-bottom:10px}.education-rows small{display:block;font-size:11px;color:var(--muted);margin-top:5px}.hobby-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}.anime-card{background:white;border:1px solid var(--line);border-radius:14px;overflow:hidden}.anime-card>img{width:100%;aspect-ratio:16/8;object-fit:cover}.anime-card>div{padding:22px}.anime-card .eyebrow{font-size:9px;color:#9b687a;margin-bottom:12px}.anime-card h3{font-size:21px;margin-bottom:11px}.anime-card p:not(.eyebrow){font-size:11px}.nature-hobbies{display:flex;flex-direction:column;gap:19px}.nature-hobbies>article{background:#eaf2ef;border:1px solid #d9e6e0;border-radius:14px;display:flex;gap:19px;padding:24px 20px;align-items:center;flex:1}.nature-hobbies>article:last-child{background:#edf1f9;border-color:#dce4f2}.hobby-illustration{color:#5a8b7a;flex:none}.hobby-illustration>.icon{width:65px;height:65px;stroke-width:1}.nature-hobbies>article:last-child .hobby-illustration{color:#7689b9}.nature-hobbies h3{font-size:20px;margin-bottom:10px}.nature-hobbies p{font-size:12px;line-height:1.8}.elsewhere-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:25px}.blog-preview{background:white;border:1px solid var(--line);border-radius:13px;overflow:hidden;transition:transform .2s}.blog-preview:hover{transform:translateY(-3px)}.blog-preview>img{width:100%;height:185px;object-fit:cover;object-position:top}.blog-preview>div{display:flex;gap:11px;padding:22px;align-items:center}.blog-preview h3{font-size:18px}.blog-preview .icon{color:var(--teal)}.blog-preview .icon:last-child{margin-left:auto;width:16px}.link-stack{display:flex;flex-direction:column;justify-content:space-between}.link-stack>a{display:flex;align-items:center;gap:17px;padding:18px 0;border-bottom:1px solid var(--line)}.link-stack>a:first-child{padding-top:9px}.link-stack>a:last-child{border-bottom:0}.link-stack>a>.icon:first-child{height:28px;width:28px;color:var(--blue)}.link-stack>a>.icon:last-child{width:15px;margin-left:auto;color:var(--muted)}.link-stack h3{font-size:18px;margin-bottom:6px}.link-stack p{font-size:12px}.link-stack a:hover h3{color:var(--blue)}.contact-band{display:flex;gap:30px;justify-content:space-between;align-items:center;padding:32px;background:#e7edf6;border:1px solid #d7e1f0;border-radius:15px;margin:10px 0 64px}.contact-band h2{font-size:27px;line-height:1.35;max-width:460px}.contact-band p:not(.eyebrow){font-size:12px;margin-top:13px}.contact-links{display:flex;gap:17px;flex-wrap:wrap;margin-top:22px}.contact-links .text-link{font-size:11px}.wechat-card{display:flex;flex-direction:column;align-items:center;background:#fff;padding:17px 20px;border-radius:11px;min-width:145px;position:relative}.wechat-card img{width:70px;height:70px;object-fit:contain}.wechat-card span{font-size:13px;font-weight:600;margin-top:7px}.wechat-card small{font-size:8px;color:var(--muted);margin-top:5px}.wechat-card>.icon{position:absolute;right:7px;top:7px;width:13px;color:var(--blue)}
.page-intro{padding:67px 0 45px;max-width:760px}.page-intro h1{font-size:clamp(43px,4.7vw,66px);line-height:1.13;white-space:pre-line}.page-lead{max-width:610px;font-size:16px;line-height:1.85;margin-top:22px}.publication-year{display:grid;grid-template-columns:65px minmax(0,1fr);gap:22px;margin-top:26px}.year-label{font:12px var(--mono);color:var(--blue);padding-top:29px}.publication{padding:26px 0;border-bottom:1px solid var(--line)}.pub-journal{font:10px/1.5 var(--mono);color:var(--teal);margin-bottom:10px}.publication h3{font-size:19px;line-height:1.5;letter-spacing:-.02em}.publication h3 a:hover{color:var(--blue)}.publication h3 span{color:var(--blue);font-size:17px}.pub-authors{font-size:11px;line-height:1.9;margin-top:10px}.pub-authors strong{color:var(--ink)}.doi{display:inline-block;font:10px var(--mono);color:var(--blue);margin-top:10px;overflow-wrap:anywhere}.caption{font-size:11px;line-height:1.8;margin-top:18px}.timeline{display:grid;gap:28px}.timeline-item{display:grid;grid-template-columns:120px 1fr;gap:25px}.timeline-item>p{font:11px var(--mono);color:var(--blue)}.timeline-item h3{font-size:19px;margin-bottom:7px}.timeline-item p{font-size:12px}.package-banner{display:grid;grid-template-columns:1fr 270px;gap:26px;align-items:center;margin-bottom:45px;padding:30px;border:1px solid var(--line);border-radius:15px;background:white}.package-banner h2{font-size:28px;max-width:430px;line-height:1.35;margin-bottom:17px}.package-banner p:not(.eyebrow){font-size:12px}.animation-frame{position:relative;aspect-ratio:1;overflow:hidden;border-radius:9px;background:#fff}.package-animation{width:100%;height:100%;object-fit:contain}.animation-toggle{position:absolute;bottom:7px;right:7px;display:flex;gap:6px;align-items:center;font-size:9px;background:#f3f7fbeb;border:1px solid var(--line);border-radius:6px;padding:6px 9px}.animation-toggle .icon{width:12px;height:12px}.animation-poster{height:100%;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:18px;text-align:center;font:12px/1.8 var(--mono);color:var(--blue);background:var(--blue-soft)}.animation-poster>.icon{width:60px;height:60px;stroke-width:1.2}.app-note{display:flex;align-items:flex-start;gap:24px;background:var(--mint);padding:30px;border:1px solid #d3e6dc;border-radius:14px;margin:0 0 60px}.app-note>.icon{width:32px;height:32px;color:var(--teal)}.app-note h2{font-size:25px;margin-bottom:12px}.app-note p{font-size:13px;margin-bottom:18px}.book-list{display:flex;flex-direction:column;gap:45px}.book-row{display:grid;grid-template-columns:200px 1fr;gap:38px;align-items:center;padding-bottom:40px;border-bottom:1px solid var(--line)}.book-row:last-child{border-bottom:0;padding-bottom:0}.book-cover{--cover:#247b70;position:relative;display:flex;flex-direction:column;align-items:flex-start;padding:26px 26px 24px 30px;aspect-ratio:3/4;background:var(--cover);color:#fff;border-radius:3px 9px 9px 3px;box-shadow:6px 6px 0 #dbe4ec,10px 12px 20px #23374712;transition:transform .2s}.book-cover:before{content:"";position:absolute;inset:0 auto 0 10px;border-left:1px solid #ffffff35}.book-cover:hover{transform:rotate(-2deg) translateY(-4px)}.blue .book-cover{--cover:#4d6abd}.lilac .book-cover{--cover:#8776a3}.book-cover>span{font:7px/1.8 var(--mono);letter-spacing:.09em}.book-cover>strong{font:600 31px var(--display);margin-top:24px;letter-spacing:-.05em}.book-cover>.icon{width:65px;height:65px;stroke-width:1.1;margin-block:auto;opacity:.8}.book-cover>small{font-size:10px}.book-row h2{font-size:31px;margin-bottom:15px}.book-row p:not(.eyebrow){font-size:14px;max-width:450px}.book-row .card-links{margin-top:25px}.resource-shortcuts{display:grid;grid-template-columns:repeat(3,1fr);gap:13px;margin-bottom:40px}.resource-shortcuts>a{display:flex;align-items:center;gap:11px;background:#fff;border:1px solid var(--line);border-radius:10px;padding:20px 17px;font-size:12px}.resource-shortcuts>a>.icon:first-child{color:var(--teal)}.resource-shortcuts>a>.icon:last-child{width:13px;margin-left:auto;color:var(--muted)}.resource-shortcuts>a:hover{border-color:#8ba3c9}.download-list{border-top:1px solid var(--line)}.download-item{display:flex;align-items:center;gap:17px;padding:23px 0;border-bottom:1px solid var(--line)}.file-icon{width:41px;height:46px;display:grid;place-items:center;background:var(--blue-soft);border-radius:8px;color:var(--blue);flex:none}.download-item>div{min-width:0}.download-item h3{font:600 13px/1.6 var(--mono);overflow-wrap:anywhere}.download-item p{font-size:11px;margin-top:7px}.file-size{display:inline-flex;align-items:center;gap:20px;margin-left:auto;font:10px var(--mono);white-space:nowrap;color:var(--muted)}.file-size>.icon{width:17px;color:var(--blue)}.download-item:hover h3{color:var(--blue)}.english-feature{display:grid;grid-template-columns:250px 1fr;gap:33px;align-items:center}.english-art{background:var(--blue-soft);border-radius:14px;padding:27px;display:flex;flex-direction:column;gap:17px;color:var(--blue)}.english-art>.icon{width:42px;height:42px;stroke-width:1.2}.english-art>span{font:650 26px/1.3 var(--display);letter-spacing:-.03em}.english-art>div{display:flex;gap:15px;opacity:.6}.english-feature h3{font-size:26px;margin-bottom:17px}.english-feature p{font-size:13px;line-height:1.9}.english-feature .card-links{margin-top:23px}.reading-links{display:grid;grid-template-columns:1fr 1fr;gap:14px}.reading-links>a{padding:19px 20px;background:#fff;border:1px solid var(--line);border-radius:10px;display:flex;gap:12px;align-items:center;font-size:12px;color:var(--ink)}.reading-links>a>.icon:first-child{color:var(--teal);width:20px}.reading-links>a>.icon:last-child{color:var(--blue);width:15px;margin-left:auto}.reading-links>a:hover{border-color:#91a7c5}.course-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}.course-card{background:white;padding:26px;border:1px solid var(--line);border-radius:14px}.course-card h2{font-size:23px;line-height:1.4;margin:12px 0 25px}.course-card .card-links{gap:18px}.qr-section{display:flex;gap:35px;align-items:center;margin:20px 0 70px;background:white;border:1px solid var(--line);border-radius:15px;padding:30px}.qr-code{width:50%;max-width:320px}.qr-logo{width:80px;height:80px;object-fit:contain;margin-bottom:22px}.qr-section h2{font-size:28px;margin-bottom:15px}.qr-section p{font-size:13px;margin-bottom:22px}
@media(min-width:1500px){.hero h1{font-size:68px}.fieldboard{height:470px}.portrait-note{top:53px;right:21px}.hero{min-height:655px}.tag-bottom{bottom:44px}.graph-note{bottom:52px}.board-scribble{bottom:14px}}
@media(max-width:1180px){.site-header,.site-footer{padding-inline:28px}.page-shell{padding-inline:28px;gap:30px;grid-template-columns:minmax(0,1fr) 139px}.page-rail{padding-left:19px}.rail-inner nav a[aria-current]:before{left:-21px}.brand small{display:none}.primary-nav{gap:0}.primary-nav>a{padding:9px 10px;font-size:12px}.hero{gap:12px;min-height:590px}.hero h1{font-size:45px}.fieldboard{height:390px}.hero-lead{font-size:14px}.hero .eyebrow{font-size:7px}.board-label{font-size:7px}.portrait-note{top:70px;right:5px}.board-tag{padding:10px;font-size:8px}.graph-note{width:67%;bottom:46px}.tag-top{left:1px;top:48px}.board-scribble{font-size:10px}.hero-actions{gap:8px}.hero-actions .button{padding:11px 12px;font-size:11px}.focus-grid{gap:15px}.focus-grid article{padding:20px 16px}.focus-grid h3{font-size:16px}.section-heading h2{font-size:27px}.three .project-card{padding:18px}.three .project-card h3{font-size:21px}.education-rows{gap:25px}.nature-hobbies>article{padding:18px 15px;gap:12px}.hobby-illustration>.icon{width:46px;height:46px}.nature-hobbies h3{font-size:18px}.contact-band{padding:26px}.contact-band h2{font-size:24px}.contact-links{gap:9px}.package-banner{grid-template-columns:1fr 220px;padding:24px}.package-banner h2{font-size:25px}.resource-shortcuts>a{padding:16px 12px;font-size:10px;gap:8px}.english-feature{grid-template-columns:210px 1fr;gap:25px}}
@media(max-width:950px){.page-shell{display:block;max-width:920px}.page-rail{display:none}.hero{grid-template-columns:1fr 1fr;min-height:580px}.hero h1{font-size:51px}.fieldboard{height:420px}.hero .eyebrow{font-size:8px}.hero-lead{font-size:15px}.portrait-note{top:62px}.site-header{gap:14px}.primary-nav .icon{display:none}.primary-nav>a{padding:9px 11px}.language-toggle{padding:8px 11px}.section-heading h2{font-size:30px}.focus-grid h3{font-size:18px}.three .project-card{padding:22px}.hero-actions .button{font-size:12px}.tag-top{top:38px}}
@media(max-width:640px){html{scroll-padding-top:20px}.site-header{padding:20px 20px 13px;min-height:0;flex-wrap:wrap;gap:13px}.brand{font-size:35px}.brand small{display:inline-block;font-size:9px;margin-left:13px}.language-toggle{margin-left:auto;font-size:11px;order:1}.primary-nav{order:2;width:100%;justify-content:space-between;margin:0;gap:0}.primary-nav>a{padding:8px 7px;font-size:11px;gap:5px}.primary-nav .icon{display:block;height:14px;width:14px}.page-shell{padding:0 21px}.hero{grid-template-columns:1fr;gap:23px;padding:43px 0 36px;min-height:0}.hero h1{font-size:clamp(40px,9.8vw,58px);line-height:1.13}.hero .eyebrow{font-size:7px;margin-bottom:20px}.hello{font-size:17px;margin-bottom:13px}.hero-lead{font-size:14px;max-width:370px;margin-top:20px}.hero-actions{margin-top:24px}.hero-actions .button{font-size:11px;padding:12px 14px}.identity-line{font-size:8px;margin-top:19px}.fieldboard{height:370px;width:100%;max-width:410px;margin:0 auto}.board-label{font-size:7px;left:8px;top:7px}.portrait-note{width:57%;top:46px;right:8px}.tag-top{top:31px;left:0;font-size:9px}.graph-note{width:61%;bottom:39px;left:0}.tag-bottom{bottom:30px}.board-scribble{bottom:4px}.section{padding:37px 0}.section.compact{padding:33px 0}.section-heading{gap:15px;margin-bottom:24px;align-items:flex-start;flex-direction:column}.section-heading h2{font-size:26px;line-height:1.3}.section-heading>.text-link{padding:0}.eyebrow{font-size:9px;letter-spacing:.07em}.focus-grid{grid-template-columns:1fr;gap:13px}.focus-grid article{display:grid;grid-template-columns:39px 1fr;gap:7px 15px;padding:21px}.focus-grid .icon-tile{grid-row:1/3;width:39px;height:39px;margin:0}.focus-grid h3{font-size:18px;margin:0}.focus-grid p{grid-column:2;font-size:12px}.project-grid,.project-grid.three{grid-template-columns:1fr;gap:15px}.project-card,.three .project-card{padding:23px}.project-top,.three .project-top{flex-direction:row;align-items:center;gap:15px;margin-bottom:20px}.project-symbol{width:54px;height:60px}.project-card h3,.three .project-card h3{font-size:26px}.project-card>p,.three .project-card>p{font-size:13px;max-width:400px}.three .text-link{font-size:12px}.education-band{gap:16px}.education-band>.icon-tile{width:37px;height:37px}.education-band h2{font-size:22px;line-height:1.4}.education-rows{grid-template-columns:1fr;gap:22px}.education-rows p{font-size:12px}.hobby-grid{grid-template-columns:1fr;gap:16px}.anime-card>img{aspect-ratio:16/9}.nature-hobbies{gap:14px}.nature-hobbies>article{padding:23px 21px;gap:21px}.hobby-illustration>.icon{height:54px;width:54px}.elsewhere-grid{grid-template-columns:1fr;gap:20px}.blog-preview>img{height:175px}.link-stack>a{padding:21px 0}.contact-band{flex-direction:column;align-items:stretch;padding:25px;gap:24px;margin:8px 0 40px}.contact-band h2{font-size:25px}.contact-links{flex-direction:column;gap:12px}.wechat-card{display:grid;grid-template-columns:50px 1fr;gap:0 15px;align-items:center;justify-items:start;padding:15px}.wechat-card img{grid-row:1/3;width:50px;height:50px}.wechat-card span{margin:0}.wechat-card small{font-size:9px;margin:0}.site-footer{padding:26px 21px;gap:18px;flex-wrap:wrap}.site-footer p{font-size:10px;flex:1}.site-footer>div{width:100%;justify-content:flex-end}.page-intro{padding:43px 0 35px}.page-intro h1{font-size:clamp(37px,10.3vw,53px);white-space:pre-line;line-height:1.17}.page-lead{font-size:14px;line-height:1.8;margin-top:20px}.publication-year{grid-template-columns:1fr;gap:0;margin-top:13px}.year-label{font-size:15px;padding-top:18px}.publication{padding:23px 0}.publication h3{font-size:17px}.pub-journal{font-size:9px}.pub-authors{font-size:11px}.doi{font-size:9px;line-height:1.7}.timeline-item{grid-template-columns:1fr;gap:9px}.package-banner{grid-template-columns:1fr;padding:24px;margin-bottom:32px;gap:20px}.package-banner h2{font-size:25px}.animation-frame{width:100%;max-width:270px;justify-self:center}.app-note{padding:24px;gap:16px;margin-bottom:40px}.app-note h2{font-size:22px}.app-note>.icon{width:26px}.book-list{gap:35px}.book-row{grid-template-columns:112px minmax(0,1fr);gap:21px;padding-bottom:30px;align-items:start}.book-cover{padding:18px 14px 16px 18px;aspect-ratio:3/4.5;box-shadow:3px 4px 0 #dbe4ec,5px 8px 15px #23374712}.book-cover:before{left:6px}.book-cover>span{font-size:5px;letter-spacing:0}.book-cover>strong{font-size:22px;margin-top:14px}.book-cover>.icon{width:39px;height:39px}.book-cover>small{font-size:7px}.book-row .eyebrow{font-size:8px;margin-bottom:10px}.book-row h2{font-size:25px;margin-bottom:10px}.book-row p:not(.eyebrow){font-size:11px}.book-row .card-links{gap:12px;flex-direction:column;align-items:flex-start;margin-top:17px}.book-row .button{padding:9px 11px;font-size:10px;gap:6px}.book-row .text-link{font-size:10px}.resource-shortcuts{grid-template-columns:1fr;margin-bottom:29px;gap:10px}.resource-shortcuts>a{font-size:12px;padding:16px 18px}.download-item{gap:11px;flex-wrap:wrap;padding:20px 0}.file-icon{width:33px;height:39px}.download-item>div{flex:1}.download-item h3{font-size:11px}.download-item p{font-size:10px}.file-size{font-size:9px;margin-left:44px;width:calc(100% - 44px);justify-content:space-between}.english-feature{grid-template-columns:1fr;gap:24px}.english-art{display:grid;grid-template-columns:60px 1fr;gap:15px;align-items:center;padding:24px}.english-art>span{font-size:24px}.english-art>div{grid-column:1/-1;justify-content:flex-end}.english-feature h3{font-size:24px}.reading-links{grid-template-columns:1fr;gap:11px}.reading-links>a{padding:18px}.course-grid{grid-template-columns:1fr;gap:16px}.course-card{padding:24px}.course-card h2{font-size:24px}.qr-section{flex-direction:column;padding:20px;gap:25px}.qr-code{width:100%;max-width:300px}.qr-section>div{width:100%;padding:5px 10px 20px}.qr-logo{width:65px;height:65px;margin-bottom:18px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}.package-animation{display:none}.animation-poster{display:flex!important}.animation-toggle{display:none!important}}
.education-row{display:grid;grid-template-columns:125px 1fr;gap:22px;padding:24px 0;border-bottom:1px solid var(--line)}.education-row>span{font:11px/1.8 var(--mono);color:var(--blue)}.education-row h3{font-size:20px;margin-bottom:8px}.education-row p{font-size:13px}@media(max-width:640px){.education-row{grid-template-columns:1fr;gap:11px}.education-row h3{font-size:18px}}

/* Personal illustrations and video channels. */
.personal-hobbies{gap:22px}
.game-card{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden}
.game-art{width:100%;aspect-ratio:2/1;display:block;background:#e8edf5}
.hobby-copy{padding:22px}
.hobby-copy .eyebrow{font-size:9px;margin-bottom:12px;color:#687e9b}
.hobby-copy h3{font-size:21px;margin-bottom:11px;line-height:1.4}
.hobby-copy p:not(.eyebrow){font-size:11px}
.specimen-card{display:grid;grid-template-columns:115px minmax(0,1fr);align-items:center;gap:22px;padding:25px 24px;border-radius:14px;border:1px solid #d9e6e0;background:#eaf2ef}
.specimen-card.plant-card{background:#edf0e5;border-color:#dce3d3}
.specimen-art{padding:4px;position:relative}
.specimen-art svg{width:100%;height:130px;display:block;overflow:hidden;filter:drop-shadow(0 5px 3px #29422818)}
.specimen-card .eyebrow{font-size:8px;letter-spacing:.06em;margin-bottom:10px;color:#73887c}
.specimen-card h3{font-size:21px;margin-bottom:12px}
.specimen-card p:not(.eyebrow){font-size:12px;line-height:1.8}
.specimen-label{display:block;font-size:9px;color:#6f8070;margin-top:14px;line-height:1.6}
.contact-band{display:grid;grid-template-columns:1fr;gap:30px}
.contact-social{display:grid;grid-template-columns:180px minmax(0,1fr);gap:18px;align-items:stretch}
.contact-social .wechat-card{justify-content:center;min-width:0;border:1px solid #d7e1f0;padding:20px;display:flex;flex-direction:column;text-align:center;gap:0}
.contact-social .wechat-card img{width:76px;height:76px}
.contact-social .wechat-card span{margin-top:9px}
.contact-social .wechat-card small{margin-top:4px}
.contact-social .wechat-card small span{font-size:10px;font-weight:400}
.video-card{display:flex;align-items:center;gap:23px;padding:22px;background:#fff;border:1px solid #d7e1f0;border-radius:11px;min-width:0}
.lab-portrait{width:124px;height:148px;flex:none;overflow:hidden;background:transparent;border-radius:8px;position:relative}
.lab-portrait img{width:100%;height:100%;object-fit:cover;object-position:50% 0;transform:scale(1.21);transform-origin:50% 0}
.lab-copy{min-width:0;flex:1}
.video-card .lab-kicker{font:8px/1.5 var(--mono);letter-spacing:.13em;color:var(--teal);margin:0 0 7px}
.video-card h3{font-size:23px;letter-spacing:-.03em;margin-bottom:8px}
.video-card .lab-description{font-size:11px;line-height:1.7;margin:0}
.video-platforms{display:flex;gap:7px;flex-wrap:wrap;margin-top:15px}
.platform{display:inline-flex;align-items:center;gap:6px;border:1px solid #e0e7ef;background:#f8fafc;border-radius:6px;padding:7px 8px;font-size:10px;line-height:1.2;white-space:nowrap}
.platform-mark{display:inline-grid;place-items:center;width:18px;height:18px;border-radius:4px;background:#ed4965;color:#fff;font-size:5px;font-weight:650;letter-spacing:-.04em}
.douyin .platform-mark{background:#283448;font-size:17px;color:#f7ffff;text-shadow:-1px 0 #64dad3,1px 0 #ff698a}
.bilibili .platform-mark{background:#e5f3fb;color:#369dcc;font-size:17px}
.video-feature{margin-bottom:23px;padding:28px 30px;gap:29px;background:#e8eef7}
.video-feature .lab-portrait{width:142px;height:153px}
.video-feature h3{font-size:29px}
.video-feature .lab-description{font-size:13px}
.video-feature .platform{background:#fff;font-size:12px;padding:9px 12px;gap:9px}
.rail-tree,.rail-years{list-style:none;margin:0;padding:0}
.rail-tree{display:flex;flex-direction:column;gap:7px}
.rail-years{margin:1px 0 5px 7px;padding-left:19px;border-left:1px solid var(--line)}
.rail-inner .rail-years a{font:10px/1.6 var(--mono);padding:7px 0;letter-spacing:-.02em}
.rail-inner .rail-years a[aria-current]:before{left:-22px;top:9px;bottom:9px;width:4px}
.rail-group.contains-current>a{color:var(--blue);font-weight:600}
@media(min-width:1380px){.contact-band{grid-template-columns:minmax(240px,1fr) minmax(0,570px);gap:24px}.contact-social{grid-template-columns:135px minmax(0,1fr);gap:12px}.contact-social .wechat-card{padding:15px}.video-card{padding:16px;gap:16px}.lab-portrait{width:92px;height:134px}.video-card h3{font-size:21px}.platform{font-size:9px;padding:5px 6px;gap:4px}.contact-links{flex-direction:column;align-items:flex-start;gap:10px}.video-feature{padding:28px 30px;gap:29px}.video-feature h3{font-size:29px}}
@media(max-width:1180px){.specimen-card{grid-template-columns:90px minmax(0,1fr);gap:17px;padding:23px 19px}.specimen-card h3{font-size:19px}.specimen-art svg{height:115px}}
@media(max-width:640px){.personal-hobbies{gap:16px}.game-art{aspect-ratio:2/1}.hobby-copy h3{font-size:21px}.specimen-card{padding:22px;grid-template-columns:100px minmax(0,1fr);gap:18px}.specimen-card h3{font-size:21px}.contact-social{grid-template-columns:1fr;gap:14px}.contact-social .wechat-card{display:grid;grid-template-columns:55px 1fr;justify-items:start;text-align:left;gap:0 15px;padding:16px 20px}.contact-social .wechat-card img{width:55px;height:55px;grid-row:1/3}.contact-social .wechat-card span{margin:0}.contact-social .wechat-card small{margin:0}.video-card,.video-feature{padding:18px;gap:16px}.lab-portrait,.video-feature .lab-portrait{width:86px;height:117px}.video-card h3,.video-feature h3{font-size:21px}.video-card .lab-description,.video-feature .lab-description{font-size:11px}.video-platforms{gap:6px;margin-top:12px}.platform,.video-feature .platform{padding:5px 6px;gap:4px;font-size:10px}.platform-mark{width:16px;height:16px}.contact-band{padding:23px;gap:25px}.contact-band .video-card{flex-direction:column;align-items:stretch}.contact-band .lab-portrait{width:100%;height:160px}.contact-band .lab-portrait img{object-fit:cover;object-position:50% 21%;transform:none}.video-feature{align-items:flex-start;gap:16px}.video-feature .lab-kicker{font-size:7px}}
@media(max-width:360px){.specimen-card{grid-template-columns:77px minmax(0,1fr);gap:12px;padding:19px}.video-feature{flex-direction:column}.video-feature .lab-portrait{width:90px;height:102px}}

.video-platforms>.platform{flex:1 1 158px;max-width:240px;gap:8px;min-height:46px;padding:8px 9px}
.platform-details{display:flex;flex-direction:column;gap:5px;min-width:0}
.platform-details code{font:10px/1.3 var(--mono);color:var(--muted);letter-spacing:.01em}
.platform-arrow{width:15px;height:15px;color:var(--blue);margin-left:auto}
.platform[href]:hover{border-color:#91a7c5;background:#fff}
.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}
@media(max-width:640px){.video-platforms>.platform{flex-basis:158px;max-width:none}.video-feature .video-platforms{margin-left:0}.video-feature .platform-details code{font-size:9px}}
@media(max-width:640px){.contact-band .lab-portrait img{width:158px;height:160px;max-width:100%;margin-inline:auto;object-position:50% 0;transform:none}}

/* Profile shortcuts use local brand marks and remain one row at every size. */
.video-platforms{flex-wrap:nowrap;gap:12px}
.video-platforms>.platform{flex:0 0 46px;width:46px;height:46px;min-height:46px;max-width:none;display:grid;place-items:center;padding:10px;border-radius:11px;background:#fff;border:1px solid #dce5ed}
.brand-icon{display:block;width:24px;height:24px;fill:currentColor;stroke:none;flex:none}
.video-platforms .xhs{color:#ed3154}
.video-platforms .douyin{color:#253341}
.video-platforms .bili{color:#00a1d6}
.video-platforms .douyin .brand-icon{filter:drop-shadow(-.6px 0 #25f4ee) drop-shadow(.6px 0 #fe2c55)}
.video-platforms>.platform:hover{border-color:currentColor;background:#fff;transform:translateY(-2px)}
.hero-github{display:inline-flex;align-items:center;gap:9px;font-size:12px;color:var(--ink);margin-top:10px;padding:7px 0}
.hero-github>.brand-icon{width:18px;height:18px}
.hero-github>.icon{width:14px;height:14px;color:var(--muted)}
.hero-github:hover{color:var(--blue)}
.github-handle{color:var(--muted);font-size:11px}
.intro-film{display:grid;grid-template-columns:minmax(0,.75fr) minmax(0,1.35fr);gap:40px;align-items:center}
.film-copy h2{font-size:31px;line-height:1.35;max-width:330px}
.film-description{font-size:13px;line-height:1.9;margin-top:18px;max-width:315px}
.film-duration{display:flex;align-items:center;gap:13px;margin-top:23px;font-size:10px;color:var(--muted)}
.film-duration>span:first-child{font:12px var(--mono);color:var(--teal);padding:6px 8px;border:1px solid #d3e2de;border-radius:5px;background:var(--mint)}
.film-screen{border-radius:14px;overflow:hidden;background:#0c181e;border:1px solid #d7e3e8;box-shadow:0 12px 26px #2337470a;min-width:0}
.film-screen video{width:100%;height:auto;aspect-ratio:16/9;display:block}
.film-screen:focus-within{outline:3px solid var(--blue);outline-offset:4px}
@media(max-width:1180px){.intro-film{gap:26px}.film-copy h2{font-size:28px}.film-description{font-size:12px}}
@media(max-width:640px){.intro-film{grid-template-columns:1fr;gap:24px}.film-copy h2{font-size:27px;max-width:none}.film-description{max-width:none;font-size:13px;margin-top:14px}.film-duration{margin-top:17px}.hero-github{margin-top:8px}.video-platforms>.platform{flex-basis:44px;width:44px;height:44px;min-height:44px;padding:10px}.video-platforms{gap:10px}}

/* Resources shares the homepage contact cards. */
.sharing-social{margin-bottom:23px}
.sharing-social .video-feature{margin-bottom:0}
@media(min-width:641px){.sharing-social{grid-template-columns:180px minmax(0,1fr);gap:18px}}