/* Academic portfolio · Responsive, dependency-free design */
:root{
  color-scheme: dark;
  --bg:#0b1120;--surface:#101a2c;--surface2:#142037;--text:#f4f7ff;--muted:#9baac3;
  --soft:#7184a3;--line:rgba(176,198,233,.14);--accent:#8de2e0;--accent2:#b49dff;
  --gold:#ffcc92;--nav:rgba(11,17,32,.84);--shadow:0 25px 70px rgba(0,0,0,.18);
  --radius:20px;--container:1160px;
}
html[data-theme="light"]{
  color-scheme:light;--bg:#f5f8fe;--surface:#fff;--surface2:#edf3fc;--text:#15223b;
  --muted:#4c627f;--soft:#667b98;--line:rgba(36,66,109,.13);--accent:#087f86;--accent2:#6550c6;
  --gold:#ba7733;--nav:rgba(245,248,254,.88);--shadow:0 22px 70px rgba(33,66,105,.08);
}
*,*::before,*::after{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:95px}
body{margin:0;background:var(--bg);color:var(--text);font:400 16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;overflow-x:hidden}
a{color:inherit;text-decoration:none}button{font:inherit}a:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:4px}
::selection{background:var(--accent2);color:var(--bg)}.container{width:min(var(--container),calc(100% - 80px));margin-inline:auto}.section{padding-block:112px;position:relative}.section--surface{background:var(--surface);border-block:1px solid var(--line)}
.ambient{position:absolute;pointer-events:none;border-radius:50%;filter:blur(110px);opacity:.14;z-index:-1}.ambient--one{width:560px;height:560px;background:#405ed9;top:0;right:-160px}.ambient--two{width:350px;height:350px;background:#148d9b;top:600px;left:-190px}
.skip-link{position:fixed;top:-90px;left:15px;z-index:100;background:var(--accent);color:var(--bg);padding:8px 16px;border-radius:4px}.skip-link:focus{top:15px}
.site-header{height:82px;position:sticky;top:0;z-index:40;background:var(--nav);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}.header-inner{display:flex;height:100%;align-items:center;justify-content:space-between;gap:20px}.brand{display:flex;align-items:center;gap:13px;white-space:nowrap;font-size:18px;font-weight:750;letter-spacing:-.5px}.brand-period{color:var(--accent)}.brand-symbol{height:31px;width:31px;position:relative;display:block;border:1px solid var(--accent);border-radius:10px;transform:rotate(-8deg)}.brand-symbol span{position:absolute;border-radius:50%;width:5px;height:5px;background:var(--accent)}.brand-symbol span:nth-child(1){top:7px;left:7px}.brand-symbol span:nth-child(2){top:17px;left:12px}.brand-symbol span:nth-child(3){top:9px;right:5px;background:var(--accent2)}
.desktop-nav{display:flex;gap:28px;align-items:center;margin-left:auto}.desktop-nav a{font-size:13px;color:var(--muted);transition:color .2s}.desktop-nav a:hover,.mobile-nav a:hover{color:var(--accent)}.header-actions{display:flex;align-items:center;gap:9px}.tool-button{width:36px;height:36px;display:grid;place-items:center;background:transparent;color:var(--text);border:1px solid var(--line);border-radius:11px;cursor:pointer;transition:border-color .2s,background .2s}.tool-button:hover{border-color:var(--accent);background:var(--surface2)}.language-toggle{width:auto;min-width:48px;padding-inline:9px;font-weight:650;font-size:12px}.menu-toggle{display:none}.mobile-nav{display:none}.theme-icon--sun{display:none}html[data-theme="light"] .theme-icon--moon{display:none}html[data-theme="light"] .theme-icon--sun{display:block}
.hero{display:grid;grid-template-columns:1.06fr .94fr;align-items:center;column-gap:45px;min-height:690px;padding-top:115px;padding-bottom:118px}.eyebrow{display:flex;align-items:center;gap:11px;color:var(--accent);font-size:11px;font-weight:750;letter-spacing:2px}.eyebrow-rule{width:23px;height:1px;background:currentColor}.hero h1{font-size:clamp(43px,5.2vw,72px);line-height:1.12;letter-spacing:-3.4px;margin:24px 0 22px;font-weight:760}.gradient-text{background:linear-gradient(100deg,var(--accent),var(--accent2));-webkit-background-clip:text;background-clip:text;color:transparent}.hero-desc{font-size:17px;line-height:1.82;max-width:510px;color:var(--muted);margin:0}.hero-buttons{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}.button{min-height:47px;padding:11px 20px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;gap:17px;font-size:13px;font-weight:700;transition:transform .2s,border .2s}.button:hover{transform:translateY(-2px)}.button--primary{background:var(--accent);color:var(--bg);border:1px solid transparent}.button--outline{border:1px solid var(--line);background:rgba(127,155,197,.05)}.button--outline:hover{border-color:var(--accent)}.hero-affiliation{margin-top:52px;display:flex;align-items:center;gap:14px}.affiliation-mark{border:1px solid var(--line);height:42px;width:42px;display:grid;place-items:center;color:var(--accent);font-family:Georgia,serif;font-size:23px;border-radius:10px}.hero-affiliation div:last-child{display:flex;flex-direction:column}.affiliation-label{letter-spacing:1.7px;font-size:9px;font-weight:800;color:var(--soft)}.hero-affiliation strong{font-size:12px;font-weight:600;color:var(--muted)}
.hero-art{height:420px;position:relative;display:flex;align-items:center;justify-content:center;gap:8px;isolation:isolate}.hero-art:before{content:"";position:absolute;inset:0;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:30px 30px;mask-image:radial-gradient(ellipse at center,#000 14%,transparent 71%);opacity:.56;z-index:-1}.art-glow{position:absolute;width:78%;height:60%;background:radial-gradient(circle,#416ba032,transparent 70%);filter:blur(18px);z-index:-1}.visual-stage{height:203px;width:140px;flex:1;max-width:154px;border:1px solid rgba(154,185,222,.25);background:linear-gradient(148deg,rgba(45,65,96,.60),rgba(15,25,42,.70));border-radius:16px;padding:14px 10px;display:flex;flex-direction:column;align-items:center;justify-content:space-between;box-shadow:var(--shadow);position:relative}.stage-label{font-size:8px;font-weight:800;letter-spacing:1.2px;color:#9daed0;white-space:nowrap}.stage-caption{font-size:10px;color:#c3d2e9;white-space:nowrap}.pixel-image{display:grid;grid-template-columns:repeat(4,1fr);width:85px;height:85px;border-radius:11px;overflow:hidden;transform:rotate(-8deg);box-shadow:0 8px 30px #060b1b80}.pixel-image span{background:#8ccada}.pixel-image span:nth-child(4n+1){background:#90abd7}.pixel-image span:nth-child(4n+2){background:#91d5d7}.pixel-image span:nth-child(4n+3){background:#5f81ba}.pixel-image span:nth-child(7),.pixel-image span:nth-child(12){background:#d0b0b5}.pixel-image span:nth-child(13),.pixel-image span:nth-child(14){background:#c29ac1}.pixel-image span:nth-child(9){background:#e0c3bc}.latent-symbol{width:89px;height:87px;display:grid;grid-template-columns:1fr 1fr;gap:5px;transform:rotate(-6deg)}.latent-symbol span{display:grid;place-items:center;font-family:ui-monospace,Consolas,monospace;font-weight:800;font-size:14px;color:#a2faf4;border:1px solid #66bcb94c;background:#2a6e7540;border-radius:7px}.decode-symbol{width:89px;height:89px;display:grid;place-items:center;position:relative}.decode-orb{height:54px;width:54px;border-radius:50%;background:radial-gradient(circle at 33% 34%,#e0cdff,#8a93e9 45%,#294f8a 75%);box-shadow:0 0 27px #858ce888}.decode-ring{position:absolute;width:84px;height:53px;border:1px solid #c1b7edaa;border-radius:50%;transform:rotate(45deg)}.decode-ring--two{transform:rotate(-45deg);border-color:#81e0e088}.flow-connector{width:23px;display:flex;align-items:center;justify-content:space-around;flex-shrink:0}.flow-connector span{width:4px;height:4px;background:#69c5d0;border-radius:50%;box-shadow:0 0 9px #69c5d0}.diagram-caption{position:absolute;bottom:38px;left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:8px;white-space:nowrap;color:var(--soft);font-size:10px;letter-spacing:.2px}.diagram-dot{height:5px;width:5px;background:var(--accent);border-radius:50%}.scroll-hint{position:absolute;bottom:38px;left:0;display:flex;align-items:center;gap:13px;color:var(--soft);font-size:9px;font-weight:700;letter-spacing:1.7px}.scroll-line{width:51px;height:1px;background:var(--soft)}
.section-heading{display:flex;gap:12px;align-items:center;color:var(--accent);font-size:11px;font-weight:800;letter-spacing:2.2px}.section-index{color:var(--soft)}.section-title{font-weight:750;font-size:clamp(36px,4.5vw,55px);letter-spacing:-2.2px;line-height:1.17;margin:20px 0 26px}.muted-title{color:var(--soft)}.body-copy{font-size:16px;line-height:1.95;max-width:610px;color:var(--muted);margin:0}.about-secondary{margin-top:17px}.about-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:100px;align-items:center}.about-aside{padding:31px 34px;border:1px solid var(--line);background:var(--bg);border-radius:var(--radius);box-shadow:var(--shadow)}.aside-label{color:var(--accent);font-size:10px;letter-spacing:2.1px;font-weight:800;margin-bottom:28px}.aside-row{display:flex;flex-direction:column;gap:5px;padding:14px 0;border-top:1px solid var(--line)}.aside-row span{font-size:9px;font-weight:750;letter-spacing:1.6px;color:var(--soft)}.aside-row strong{font-size:14px;font-weight:630}.aside-divider{border-top:1px solid var(--line);margin:18px 0 11px}.aside-quote{display:flex;gap:12px;align-items:start}.aside-quote span{font-family:Georgia,serif;color:var(--accent);font-size:42px;line-height:1}.aside-quote p{font-family:Georgia,"Noto Serif SC",serif;font-size:16px;font-style:italic;color:var(--muted);margin:5px 0 0;line-height:1.6}
.section-topline{display:flex;justify-content:space-between;align-items:center;gap:20px}.section-aside-note{font-size:10px;letter-spacing:1.5px;color:var(--soft)}.research-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:17px;margin-top:47px}.research-card{border:1px solid var(--line);border-radius:var(--radius);padding:30px 27px 25px;min-height:345px;background:linear-gradient(145deg,var(--surface),var(--bg));display:flex;flex-direction:column;transition:transform .2s,border-color .2s}.research-card:hover{transform:translateY(-5px);border-color:var(--accent)}.research-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:39px}.research-symbol{width:48px;height:48px;border:1px solid var(--line);border-radius:13px;display:grid;place-items:center;color:var(--accent)}.research-number{font-size:12px;font-family:ui-monospace,Consolas,monospace;color:var(--soft)}.research-card h3{font-size:20px;letter-spacing:-.5px;line-height:1.35;margin:0 0 11px}.research-card p{margin:0 0 25px;color:var(--muted);font-size:13px;line-height:1.8;flex:1}.tag-row{display:flex;flex-wrap:wrap;gap:6px}.tag{padding:5px 9px;border-radius:6px;border:1px solid var(--line);font-size:10px;color:var(--muted)}
.section-intro{color:var(--muted);font-size:14px;max-width:620px;line-height:1.7;margin-top:-6px}.projects-list{border-top:1px solid var(--line);margin-top:39px}.project-row{padding:27px 7px;display:grid;grid-template-columns:60px minmax(0,1fr) 180px;gap:20px;border-bottom:1px solid var(--line);align-items:start}.project-index{color:var(--accent);font:700 14px/1.4 ui-monospace,Consolas,monospace}.project-main h3{margin:3px 0 10px;font-size:21px;letter-spacing:-.6px}.project-main p{color:var(--muted);font-size:13px;line-height:1.8;max-width:650px;margin:0 0 14px}.project-meta{text-align:right}.project-status{font-size:11px;font-weight:700;color:var(--accent)}.project-link{display:inline-block;margin-top:16px;color:var(--accent);font-weight:700;font-size:12px;border-bottom:1px solid currentColor}.project-link:hover{color:var(--text)}
.publication-empty{margin-top:40px;border:1px dashed var(--line);border-radius:var(--radius);padding:34px;display:flex;align-items:center;gap:22px;background:var(--surface)}.empty-icon{height:60px;width:60px;flex:none;display:grid;place-items:center;color:var(--accent);background:var(--surface2);border-radius:16px}.publication-empty h3{font-size:18px;line-height:1.4;margin:0 0 6px}.publication-empty p{color:var(--muted);margin:0;font-size:13px;max-width:590px;line-height:1.7}.empty-label{font-size:10px;font-weight:700;white-space:nowrap;color:var(--soft);margin-left:auto;letter-spacing:1px}
.section--contact{overflow:hidden;background:linear-gradient(120deg,#13213b,#122841 70%,#162640);border-top:1px solid #ffffff1c}.section--contact .section-heading{color:#91f0e3}.section--contact .section-index{color:#8ba4c0}.section--contact .section-title{font-size:clamp(46px,6vw,76px);margin-top:24px}.section--contact .body-copy{color:#c1cde0}.contact-grid{display:grid;grid-template-columns:1fr .7fr;align-items:center;gap:30px;min-height:275px}.contact-links{display:flex;gap:10px;flex-wrap:wrap;margin-top:30px}.contact-link{display:inline-flex;align-items:center;gap:9px;padding:11px 14px;border-radius:10px;border:1px solid #b6d7fa3a;color:#e9f5ff;font-size:12px;font-weight:650}.contact-link:hover{border-color:#91f0e3}.contact-link svg{width:16px;height:16px}.contact-placeholder{margin-top:20px;font-size:12px;color:#a2b5cc;max-width:520px;line-height:1.7}.contact-pattern{height:280px;position:relative;display:grid;place-items:center}.contact-ring{position:absolute;border:1px solid #80d6db3d;border-radius:50%;width:155px;height:155px}.contact-ring--two{width:235px;height:235px;border-color:#80d6db24}.contact-ring--three{width:315px;height:315px;border-color:#80d6db17}.contact-center{font-size:46px;letter-spacing:-4px;color:#a5ece4;font-weight:800;opacity:.7}
.site-footer{padding:29px 0;background:var(--bg);border-top:1px solid var(--line)}.footer-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;font-size:12px}.footer-inner strong{font-weight:750}.footer-inner span{color:var(--muted)}.footer-meta{display:flex;align-items:center;gap:14px}.back-top{color:var(--accent);margin-left:15px}.back-top:hover{text-decoration:underline}
@media(max-width:1070px){.desktop-nav{gap:16px}.hero{column-gap:16px}.hero h1{font-size:clamp(43px,5vw,61px)}.hero-art{transform:scale(.91);transform-origin:center}.about-grid{gap:45px}}
@media(max-width:820px){.container{width:min(var(--container),calc(100% - 42px))}.section{padding-block:75px}.desktop-nav{display:none}.menu-toggle{display:grid}.mobile-nav:not([hidden]){display:flex;flex-direction:column;gap:0;background:var(--bg);padding:8px 22px 20px;border-bottom:1px solid var(--line);box-shadow:var(--shadow)}.mobile-nav a{padding:11px 4px;color:var(--muted);font-size:14px}.hero{grid-template-columns:1fr;min-height:auto;padding-top:83px;padding-bottom:85px}.hero h1{font-size:clamp(42px,8vw,64px)}.hero-art{margin-top:55px;height:320px;max-width:510px;width:100%;justify-self:center;transform:scale(1)}.diagram-caption{bottom:5px}.scroll-hint{display:none}.about-grid,.contact-grid{grid-template-columns:1fr}.about-aside{max-width:550px}.research-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.research-card:last-child{grid-column:1/-1}.contact-pattern{display:none}}
@media(max-width:550px){.container{width:calc(100% - 36px)}.site-header{height:70px}.brand{font-size:16px}.brand-symbol{height:29px;width:29px}.header-actions{gap:6px}.hero{padding-top:70px;padding-bottom:75px}.hero h1{font-size:clamp(37px,11vw,53px);letter-spacing:-2.2px}.hero-desc{font-size:15px}.hero-affiliation{margin-top:36px}.hero-art{margin-top:44px;height:285px;gap:4px}.visual-stage{height:170px;min-width:0;padding:12px 3px;border-radius:11px}.stage-label{font-size:6px;letter-spacing:.5px}.stage-caption{font-size:8px}.pixel-image{height:64px;width:64px}.latent-symbol{height:63px;width:63px}.latent-symbol span{font-size:10px}.decode-symbol{transform:scale(.7)}.flow-connector{width:14px}.flow-connector span{height:3px;width:3px}.diagram-caption{font-size:9px;max-width:98%;text-align:center;white-space:normal}.section-title{font-size:clamp(34px,9vw,44px);letter-spacing:-1.5px}.section-aside-note{display:none}.about-aside{padding:25px}.research-grid{grid-template-columns:1fr;margin-top:28px}.research-card{min-height:0;padding:25px}.research-card:last-child{grid-column:auto}.research-header{margin-bottom:25px}.project-row{grid-template-columns:33px 1fr;gap:10px}.project-meta{grid-column:2;text-align:left}.project-main h3{font-size:19px}.publication-empty{padding:23px;align-items:flex-start;flex-wrap:wrap;gap:16px}.empty-icon{height:44px;width:44px}.empty-label{margin-left:0}.footer-inner{align-items:flex-start;flex-direction:column}.footer-meta{flex-wrap:wrap;gap:8px}.back-top{margin-left:0}.contact-grid{min-height:auto}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}}
/* Prevent oversized decorative layers and flex min-content from widening mobile viewports. */
html,body{max-width:100%;overflow-x:clip}
.hero-copy,.hero-art{min-width:0}
@media(max-width:550px){
  .ambient--one{width:min(560px,100vw);right:0}
  .ambient--two{width:min(350px,100vw);left:0}
  .hero-art .visual-stage{width:auto;min-width:0;flex:1 1 0}
  .hero-art .flow-connector{flex-shrink:0}
}

/* Bilingual education timeline inside the About card. */
.aside-label--education{margin:23px 0 16px;letter-spacing:1.8px}
.education-list{border-left:1px solid var(--line);margin-left:5px;padding-left:20px}
.education-item{position:relative;padding:0 0 22px}
.education-item:last-child{padding-bottom:2px}
.education-item::before{content:"";position:absolute;left:-25px;top:4px;height:9px;width:9px;border:2px solid var(--accent);background:var(--bg);border-radius:50%}
.education-period{font-size:10px;font-weight:760;color:var(--accent);letter-spacing:.25px;margin-bottom:7px}
.education-school{font-size:14px;font-weight:750;line-height:1.5;margin:0 0 4px;color:var(--text)}
.education-major{font-size:12px;color:var(--muted);line-height:1.7;margin:0}