:root{
  --yl-ac:#2563eb;
  --yl-ac2:#1d4ed8;
  --yl-ac-soft:#eff6ff;
  --yl-ink:#0f172a;
  --yl-mut:#5b6b83;
  --yl-bg:#f7f9fc;
  --yl-bd:#e2e8f0;
  --yl-radius:16px;
  --yl-shadow:0 10px 30px rgba(15,23,42,.08);
  --yl-shadow-hover:0 18px 44px rgba(37,99,235,.16);
  --yl-font:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}

body,button,input,select,textarea{font-family:var(--yl-font)!important}

/* ---------- body canvas ---------- */
body{background:var(--yl-bg);color:var(--yl-ink);line-height:1.85;letter-spacing:.01em}

/* ---------- sticky glass header ---------- */
.site-header{
  position:sticky;top:0;z-index:999;
  background:rgba(255,255,255,.82)!important;
  backdrop-filter:blur(14px) saturate(160%);
  -webkit-backdrop-filter:blur(14px) saturate(160%);
  border-bottom:1px solid var(--yl-bd);
  box-shadow:0 4px 18px rgba(15,23,42,.05);
  transition:box-shadow .25s ease,background .25s ease;
}
.ast-primary-header-bar{background:transparent!important}
.custom-logo{width:auto;height:52px;display:block}
.custom-logo-link img{transition:transform .25s ease,filter .25s ease}
.custom-logo-link:hover img{transform:scale(1.03);filter:drop-shadow(0 6px 14px rgba(37,99,235,.25))}
.site-title{display:none!important}
.site-title a{background:linear-gradient(120deg,var(--yl-ac),var(--yl-ac2));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.main-header-menu > li > a{
  font-weight:500!important;font-size:.95rem!important;
  color:var(--yl-ink)!important;position:relative;
  padding:.6em .9em!important;border-radius:999px;
  transition:color .2s ease,background .2s ease;
}
.main-header-menu > li > a:hover{color:var(--yl-ac)!important;background:var(--yl-ac-soft)}
.main-header-menu > li.current-menu-item > a{
  color:var(--yl-ac)!important;background:var(--yl-ac-soft);
  box-shadow:inset 0 0 0 1px #dbeafe;
}

/* ---------- footer ---------- */
.site-footer{background:#0f172a!important;border-top:3px solid var(--yl-ac)}
.ast-footer-copyright{color:#94a3b8!important;font-size:.9rem;letter-spacing:.03em}
.site-below-footer-wrap{border-top:none!important;background:#0f172a}
.ast-footer-copyright p{margin:.4em 0}

/* ---------- section headings ---------- */
.entry-content h1,.entry-content h2,.entry-content h3{color:var(--yl-ink);letter-spacing:.01em}

/* ---------- links ---------- */
.entry-content a{color:var(--yl-ac);text-decoration:none;border-bottom:1px solid rgba(37,99,235,.25);transition:color .2s,border-color .2s}
.entry-content a:hover{color:var(--yl-ac2);border-bottom-color:var(--yl-ac2)}

/* ---------- responsive ---------- */
@media(max-width:768px){
  .site-header{position:relative}
}

/* hide redundant page title on the home page (hero already has one) */
.home .entry-header{display:none}

/* hide redundant page title on the home page (hero already has one) */
.home .entry-header{display:none}

/* ===== page content styles (moved from page inline blocks) ===== */
/* ===== home-page styles (moved from page inline) ===== */
.ylh{--ac:var(--yl-ac,#2563eb);--ink:var(--yl-ink,#0f172a);--mut:var(--yl-mut,#5b6b83);--bg:#f7f9fc;--bd:var(--yl-bd,#e2e8f0)}
.ylh *{box-sizing:border-box;margin:0}
.ylh-hero{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,#eff6ff 0%,#f7f9fc 55%,#e0f2fe 100%);
  border:1px solid var(--bd);border-radius:22px;
  padding:3.4rem 3rem;margin-bottom:2rem;
  box-shadow:0 12px 34px rgba(37,99,235,.10);
}
.ylh-hero::before{
  content:"";position:absolute;top:-120px;right:-80px;width:340px;height:340px;
  background:radial-gradient(circle,rgba(37,99,235,.12),transparent 70%);
  pointer-events:none;
}
.ylh-hero::after{
  content:"";position:absolute;bottom:-140px;left:-60px;width:320px;height:320px;
  background:radial-gradient(circle,rgba(14,165,233,.10),transparent 70%);
  pointer-events:none;
}
.ylh-hero h1{position:relative;z-index:1;margin:0 0 .35em;font-size:2.15rem;font-weight:750;color:var(--ink);letter-spacing:.01em;line-height:1.3}
.ylh-hero h1 span{background:linear-gradient(120deg,#2563eb,#0ea5e9);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.ylh-hero p.sub{position:relative;z-index:1;color:var(--mut);font-size:1rem;margin:0 0 1.1em;font-weight:500;letter-spacing:.02em}
.ylh-hero p{position:relative;z-index:1;color:#334155;line-height:1.95;margin:.4em 0;max-width:62em;font-size:1rem}
.ylh-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(235px,1fr));gap:1.3rem;margin:2.2rem 0}
.ylh-card{
  background:#fff;border:1px solid var(--bd);border-radius:18px;padding:1.6rem 1.5rem;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
  position:relative;overflow:hidden;
}
.ylh-card::before{
  content:"";position:absolute;left:0;top:0;width:100%;height:4px;
  background:linear-gradient(90deg,#2563eb,#0ea5e9);opacity:0;transition:opacity .25s ease;
}
.ylh-card:hover{transform:translateY(-5px);box-shadow:var(--yl-shadow-hover);border-color:#bfdbfe}
.ylh-card:hover::before{opacity:1}
.ylh-card .ic{font-size:1.7rem;display:block;margin-bottom:.4rem}
.ylh-card h3{margin:0 0 .4em;font-size:1.06rem;font-weight:650;color:var(--ink)}
.ylh-card p{margin:0;font-size:.9rem;color:var(--mut);line-height:1.8}
.ylh-links{display:grid;grid-template-columns:repeat(auto-fit,minmax(185px,1fr));gap:1.1rem;margin:1.6rem 0}
.ylh-links a{
  display:block;text-align:center;background:#fff;border:1px solid var(--bd);border-radius:14px;
  padding:1.05rem 1rem;color:var(--ac);font-weight:650;text-decoration:none;
  transition:all .22s ease;letter-spacing:.01em;
}
.ylh-links a:hover{background:linear-gradient(120deg,#2563eb,#0ea5e9);color:#fff;border-color:transparent;box-shadow:0 12px 26px rgba(37,99,235,.30);transform:translateY(-2px)}
.ylh-join{
  background:linear-gradient(120deg,#eff6ff,#f0f9ff);border:1px dashed #93c5fd;border-radius:18px;
  padding:1.6rem 2rem;margin-top:2.2rem;position:relative;
}
.ylh-join h3{margin:0 0 .5em;color:var(--ac);font-size:1.1rem;font-weight:700}
.ylh-join p{margin:.3em 0;color:#334155;font-size:.94rem;line-height:1.9}
@media(max-width:640px){.ylh-hero{padding:2.2rem 1.4rem}.ylh-hero h1{font-size:1.6rem}}

/* ===== research-page styles (moved from page inline) ===== */
.ylr{--ac:var(--yl-ac,#2563eb);--ink:var(--yl-ink,#0f172a);--mut:var(--yl-mut,#5b6b83);--bd:var(--yl-bd,#e2e8f0)}
.ylr *{box-sizing:border-box}
.ylr h2.sec{font-size:1.4rem;font-weight:750;color:var(--ink);margin:2.6em 0 1.1em;padding-bottom:.55em;border-bottom:2px solid var(--bd);position:relative}
.ylr h2.sec::after{content:"";position:absolute;left:0;bottom:-2px;width:70px;height:2px;background:linear-gradient(90deg,#2563eb,#0ea5e9);border-radius:2px}
.ylr h2.sec:first-child{margin-top:0}
.ylr-dir{
  background:#fff;border:1px solid var(--bd);border-left:5px solid #2563eb;border-radius:16px;
  padding:1.6rem 1.8rem;margin-bottom:1.3rem;
  transition:transform .22s ease,box-shadow .22s ease;
}
.ylr-dir:hover{transform:translateX(4px);box-shadow:0 12px 30px rgba(37,99,235,.10)}
.ylr-dir h3{margin:0 0 .55em;color:var(--ink);font-size:1.12rem;font-weight:680}
.ylr-dir h3 .ic{margin-right:.45em}
.ylr-dir p{margin:.4em 0;color:#334155;line-height:1.9;font-size:.95rem}
.ylr-g{
  margin:0 0 .9em;padding:1.05rem 1.5rem;background:#fff;border:1px solid var(--bd);
  border-radius:13px;transition:box-shadow .2s ease,border-color .2s ease;
}
.ylr-g:hover{border-color:#bfdbfe;box-shadow:0 8px 20px rgba(37,99,235,.08)}
.ylr-g b{color:var(--ink);font-size:.94rem;font-weight:600}
.ylr-g .meta{color:var(--mut);font-size:.84rem;margin-top:.3em;line-height:1.6}
.ylr-g .tag{
  display:inline-block;background:linear-gradient(120deg,#eff6ff,#f0f9ff);color:#2563eb;border:1px solid #dbeafe;
  border-radius:999px;padding:.12em .7em;font-size:.76rem;margin-right:.6em;font-weight:600;vertical-align:.1em;
}
@media(max-width:640px){.ylr-dir{padding:1.3rem 1.2rem}}

/* ===== publications-page styles (moved from page inline) ===== */
.ylq{--ac:var(--yl-ac,#2563eb);--ink:var(--yl-ink,#0f172a);--mut:var(--yl-mut,#5b6b83);--bd:var(--yl-bd,#e2e8f0)}
.ylq *{box-sizing:border-box}
.ylq h2.sec{font-size:1.4rem;font-weight:750;color:var(--ink);margin:2.6em 0 1em;padding-bottom:.55em;border-bottom:2px solid var(--bd);position:relative}
.ylq h2.sec::after{content:"";position:absolute;left:0;bottom:-2px;width:70px;height:2px;background:linear-gradient(90deg,#2563eb,#0ea5e9);border-radius:2px}
.ylq h2.sec:first-child{margin-top:0}
.ylq .note{color:var(--mut);font-size:.86rem;margin-bottom:1.6em;background:#fff;border:1px solid var(--bd);border-radius:10px;padding:.6em 1.1em;display:inline-block}
.ylq h3.yr{color:var(--ac);font-size:1.08rem;font-weight:700;margin:1.9em 0 .7em;padding-left:.7em;border-left:5px solid var(--ac);line-height:1.4}
.ylq ol{margin:0;padding-left:1.4em;list-style:none;counter-reset:pub}
.ylq ol li{counter-increment:pub;position:relative;padding-left:1.9em}
.ylq ol li::before{
  content:counter(pub);position:absolute;left:0;top:.12em;
  width:1.55em;height:1.55em;border-radius:8px;
  background:linear-gradient(120deg,#eff6ff,#f0f9ff);border:1px solid #dbeafe;
  color:#2563eb;font-size:.78em;font-weight:700;text-align:center;line-height:1.55em;
}
.ylq li{color:#334155;line-height:1.85;font-size:.94rem;margin-bottom:.95em}
.ylq li em{color:var(--ink)}
.ylq li strong{color:var(--ink)}
.ylq .cf ol li{margin-bottom:.7em}
@media(max-width:640px){.ylq h2.sec{font-size:1.25rem}}

/* ===== people-page styles (moved from page inline) ===== */
.ylp{--ac:var(--yl-ac,#2563eb);--ink:var(--yl-ink,#0f172a);--mut:var(--yl-mut,#5b6b83);--bd:var(--yl-bd,#e2e8f0)}
.ylp *{box-sizing:border-box}
.ylp h2.ylp-sec{font-size:1.4rem;font-weight:750;color:var(--ink);margin:2.8em 0 1.2em;padding-bottom:.55em;border-bottom:2px solid var(--bd);position:relative}
.ylp h2.ylp-sec::after{content:"";position:absolute;left:0;bottom:-2px;width:70px;height:2px;background:linear-gradient(90deg,#2563eb,#0ea5e9);border-radius:2px}
.ylp h2.ylp-sec:first-child{margin-top:0}
.ylp .ylp-en{font-weight:400;color:var(--mut);font-size:.85em;margin-left:.6em}
.ylp-pi{
  display:flex;gap:2.4rem;background:linear-gradient(135deg,#fff,#f7f9fc);border:1px solid var(--bd);
  border-radius:20px;padding:2.2rem;flex-wrap:wrap;box-shadow:0 12px 34px rgba(15,23,42,.06);position:relative;overflow:hidden;
}
.ylp-pi::before{content:"";position:absolute;top:-90px;right:-70px;width:280px;height:280px;background:radial-gradient(circle,rgba(37,99,235,.10),transparent 70%);pointer-events:none}
.ylp-pi img{
  width:224px;height:284px;object-fit:cover;border-radius:16px;
  box-shadow:0 14px 34px rgba(37,99,235,.22);flex-shrink:0;position:relative;z-index:1;
  border:4px solid #fff;
}
.ylp-pi-info{flex:1;min-width:280px;position:relative;z-index:1}
.ylp-pi-info h3{margin:0 0 .25em;font-size:1.7rem;font-weight:750;color:var(--ink)}
.ylp-pi-info h3 span{font-size:.72em;color:var(--mut);font-weight:500;margin-left:.7em}
.ylp-role{color:var(--ac);font-weight:650;font-size:.96rem;margin:0 0 1em}
.ylp-pi-info p{color:#334155;line-height:1.9;margin:.55em 0;font-size:.95rem}
.ylp-tags{margin:1.2em 0 .5em;display:flex;flex-wrap:wrap;gap:.55em}
.ylp-tags span{
  background:linear-gradient(120deg,#eff6ff,#f0f9ff);color:#2563eb;border:1px solid #dbeafe;
  border-radius:999px;padding:.3em 1em;font-size:.83rem;font-weight:500;
}
.ylp-fund{font-size:.86rem;color:var(--mut);border-top:1px dashed var(--bd);padding-top:.95em;margin-top:1.2em}
.ylp-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(182px,1fr));gap:1.3rem}
.ylp-card{
  background:#fff;border:1px solid var(--bd);border-radius:18px;padding:1.6rem 1rem;text-align:center;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.ylp-card:hover{transform:translateY(-4px);box-shadow:var(--yl-shadow-hover);border-color:#bfdbfe}
.ylp-card img{width:96px;height:96px;border-radius:50%;object-fit:cover;background:linear-gradient(120deg,#e2e8f0,#f1f5f9)}
.ylp-card h4{margin:.85em 0 .2em;font-size:1rem;font-weight:650;color:var(--ink)}
.ylp-card p{margin:0;font-size:.83rem;color:var(--mut);line-height:1.65}
.ylp-grid-sm{grid-template-columns:repeat(auto-fill,minmax(142px,1fr));gap:1.1rem}
.ylp-grid-sm .ylp-card{padding:1.3rem .8rem}
.ylp-grid-sm .ylp-card img{width:76px;height:76px}
@media(max-width:640px){.ylp-pi{padding:1.4rem}.ylp-pi img{width:100%;height:auto;max-height:400px}}

/* ===== contact-page styles (moved from page inline) ===== */
.ylc{--ac:var(--yl-ac,#2563eb);--ink:var(--yl-ink,#0f172a);--mut:var(--yl-mut,#5b6b83);--bd:var(--yl-bd,#e2e8f0)}
.ylc *{box-sizing:border-box}
.ylc-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(265px,1fr));gap:1.3rem;margin-bottom:2rem}
.ylc-card{
  background:linear-gradient(135deg,#fff,#f7f9fc);border:1px solid var(--bd);border-radius:18px;padding:1.8rem;
  transition:transform .22s ease,box-shadow .22s ease;
}
.ylc-card:hover{transform:translateY(-4px);box-shadow:var(--yl-shadow-hover)}
.ylc-card .ic{font-size:1.6rem;display:block;margin-bottom:.4rem}
.ylc-card h3{margin:0 0 .6em;font-size:1.08rem;font-weight:680;color:var(--ink)}
.ylc-card p{margin:.35em 0;color:#334155;font-size:.94rem;line-height:1.85}
.ylc-card .em{
  font-family:ui-monospace,SFMono-Regular,Consolas,monospace;background:linear-gradient(120deg,#eff6ff,#f0f9ff);
  color:#1d4ed8;border:1px solid #dbeafe;padding:.18em .6em;border-radius:8px;font-size:.9rem;
}
.ylc-join{
  background:linear-gradient(135deg,#eff6ff 0%,#f0f9ff 55%,#fff 100%);
  border:1px solid #bfdbfe;border-radius:20px;padding:2rem 2.2rem;position:relative;overflow:hidden;
}
.ylc-join::before{content:"";position:absolute;top:-80px;right:-60px;width:240px;height:240px;background:radial-gradient(circle,rgba(37,99,235,.10),transparent 70%);pointer-events:none}
.ylc-join h3{margin:0 0 .7em;color:var(--ac);font-size:1.2rem;font-weight:750}
.ylc-join p{color:#334155;line-height:1.95;font-size:.95rem;margin:.5em 0}
.ylc-join ul{margin:.6em 0;padding-left:1.4em;color:#334155;font-size:.94rem;line-height:1.95}
.ylc-join li{margin:.35em 0}
@media(max-width:640px){.ylc-join{padding:1.5rem 1.3rem}}