/* ============================================================
   Mingwang Xu — Homepage  ·  elevated editorial system
   ============================================================ */
:root{
  --paper:#f7f5f0;
  --paper-2:#fffefb;
  --ink:#171512;
  --ink-soft:#3c3833;
  --muted:#8a857b;
  --faint:#b4afa4;
  --line:rgba(23,21,18,0.13);
  --line-soft:rgba(23,21,18,0.07);
  --accent:oklch(0.47 0.15 256);          /* deep ink-cobalt */
  --accent-2:oklch(0.55 0.16 256);
  --accent-soft:oklch(0.47 0.15 256 / 0.09);
  --serif:"Newsreader",Georgia,serif;
  --mono:"IBM Plex Mono",ui-monospace,monospace;
  --col:1080px;
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  background:var(--paper);color:var(--ink);font-family:var(--serif);
  line-height:1.6;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
::selection{background:var(--ink);color:var(--paper);}
a{color:inherit;}

/* paper grain overlay */
body::before{
  content:"";position:fixed;inset:0;z-index:9999;pointer-events:none;opacity:0.4;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.55'/%3E%3C/svg%3E");
  mix-blend-mode:multiply;
}

/* scroll progress */
.progress{position:fixed;top:0;left:0;height:2px;width:0;background:var(--accent);z-index:10000;transition:width .1s linear;}

.label{font-family:var(--mono);font-size:11px;font-weight:500;letter-spacing:0.2em;text-transform:uppercase;color:var(--muted);}
.label .dot{color:var(--accent);}

/* ===== layout ===== */
.shell{display:grid;grid-template-columns:320px 1fr;max-width:1340px;margin:0 auto;}

/* ===== sidebar ===== */
aside{
  position:sticky;top:0;align-self:start;height:100vh;
  padding:48px 40px 36px;display:flex;flex-direction:column;
  border-right:1px solid var(--line);
}
.portrait{
  width:84px;height:84px;border-radius:50%;overflow:hidden;margin-bottom:22px;
  border:1px solid var(--line);position:relative;flex-shrink:0;
  box-shadow:0 6px 22px -10px rgba(23,21,18,0.4);
}
.portrait img{width:100%;height:100%;object-fit:cover;display:block;}
aside .name{font-size:27px;font-weight:500;line-height:1.04;letter-spacing:-0.02em;margin-bottom:9px;}
aside .role{font-style:italic;font-weight:300;font-size:16px;color:var(--ink);line-height:1.35;}
aside .aff{font-size:14px;font-weight:300;color:var(--muted);margin-top:9px;line-height:1.45;}
aside .aff a{color:var(--muted);text-decoration:none;border-bottom:1px solid var(--line);}
aside .aff a:hover{color:var(--accent);border-color:var(--accent);}

nav.jump{margin-top:30px;display:flex;flex-direction:column;gap:1px;}
nav.jump a{
  font-family:var(--mono);font-size:11.5px;letter-spacing:0.05em;text-transform:uppercase;
  text-decoration:none;color:var(--muted);padding:6px 0;display:flex;align-items:center;gap:12px;transition:color .22s;
}
nav.jump a .tick{width:12px;height:1px;background:var(--faint);transition:width .3s cubic-bezier(.2,.7,.2,1),background .3s;}
nav.jump a:hover{color:var(--ink);}
nav.jump a:hover .tick{width:22px;}
nav.jump a.active{color:var(--accent);}
nav.jump a.active .tick{width:30px;background:var(--accent);}

aside .spacer{flex:1;min-height:24px;}
aside .contact{display:flex;flex-direction:column;gap:6px;}
aside .contact a{font-family:var(--mono);font-size:11.5px;letter-spacing:0.03em;color:var(--ink);text-decoration:none;width:fit-content;display:inline-flex;gap:7px;align-items:center;transition:color .2s,gap .2s;}
aside .contact a .arr{color:var(--faint);transition:transform .2s,color .2s;}
aside .contact a:hover{color:var(--accent);}
aside .contact a:hover .arr{transform:translate(2px,-2px);color:var(--accent);}

/* ===== main ===== */
main{padding:0 clamp(28px,5vw,80px);min-width:0;}
section{padding:9vh 0;border-top:1px solid var(--line);scroll-margin-top:20px;}
section:first-child{border-top:none;}
.sec-head{display:flex;align-items:baseline;gap:16px;margin-bottom:44px;}
.sec-head .idx{font-family:var(--mono);font-size:12px;color:var(--accent);letter-spacing:0.1em;}
.sec-head h2{font-size:13px;font-family:var(--mono);font-weight:500;letter-spacing:0.2em;text-transform:uppercase;}
.sec-head .rule{flex:1;height:1px;background:var(--line);}

/* ===== hero ===== */
.hero{padding:13vh 0 9vh;border-top:none;}
.hero .topkick{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;margin-bottom:42px;}
.hero h1{
  font-size:clamp(40px,6.6vw,82px);font-weight:300;line-height:1.0;letter-spacing:-0.03em;text-wrap:balance;
}
.hero h1 .em{font-style:italic;color:var(--accent);font-weight:400;}
.hero h1 .word{display:inline-block;}
html.js-anim .hero h1 .word{opacity:0;transform:translateY(0.5em) rotate(2deg);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1);}
html.js-anim .hero h1 .word.in{opacity:1;transform:none;}
.hero .sub{font-size:18px;font-weight:300;color:var(--ink-soft);margin-top:30px;max-width:54ch;line-height:1.6;text-wrap:pretty;}

/* venue marquee */
.marquee{margin-top:48px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);overflow:hidden;white-space:nowrap;padding:14px 0;-webkit-mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent);mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent);}
.marquee .track{display:inline-flex;gap:0;animation:scroll-x 32s linear infinite;will-change:transform;}
.marquee:hover .track{animation-play-state:paused;}
.marquee .v{font-family:var(--mono);font-size:13px;letter-spacing:0.12em;text-transform:uppercase;color:var(--muted);padding:0 26px;display:inline-flex;align-items:center;gap:26px;}
.marquee .v::after{content:"✦";color:var(--accent);font-size:10px;}
@keyframes scroll-x{to{transform:translateX(-50%);}}

/* stats */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin-top:54px;border:1px solid var(--line);border-radius:10px;overflow:hidden;background:var(--paper-2);}
.stat{padding:26px 28px;border-right:1px solid var(--line);position:relative;overflow:hidden;}
.stat:last-child{border-right:none;}
.stat .n{font-size:clamp(36px,4.4vw,52px);font-weight:300;letter-spacing:-0.02em;line-height:1;font-feature-settings:"tnum";}
.stat .n .suf{color:var(--accent);}
.stat .t{font-family:var(--mono);font-size:10.5px;letter-spacing:0.12em;text-transform:uppercase;color:var(--muted);margin-top:12px;}

/* ===== about ===== */
.about-grid{display:grid;grid-template-columns:1.5fr 0.9fr;gap:60px;align-items:start;}
.about p{font-size:18px;font-weight:300;line-height:1.72;margin-bottom:18px;color:var(--ink-soft);text-wrap:pretty;}
.about p:first-child{font-size:21px;line-height:1.56;color:var(--ink);}
.about p:first-child .em,.about p .em{color:var(--accent);font-style:italic;}
.aside-card .ac-label{font-family:var(--mono);font-size:10.5px;letter-spacing:0.14em;text-transform:uppercase;color:var(--muted);margin-bottom:14px;}
.interests{display:flex;flex-direction:column;}
.interests span{font-size:18px;font-weight:300;padding:11px 0;border-bottom:1px solid var(--line-soft);display:flex;align-items:center;gap:12px;}
.interests span::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--accent);flex-shrink:0;}
.interests span:last-child{border-bottom:none;}

/* ===== publications ===== */
.feat{display:flex;flex-direction:column;gap:0;margin-bottom:14px;}
.feat-pub{
  display:grid;grid-template-columns:auto 1fr;gap:0 26px;padding:30px 26px 30px 22px;margin:0 -26px;
  border-top:1px solid var(--line-soft);position:relative;transition:background .3s;border-radius:8px;
}
.feat-pub:first-child{border-top:none;}
.feat-pub::before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:2px;background:var(--accent);transform:scaleY(0);transform-origin:center;transition:transform .35s cubic-bezier(.2,.7,.2,1);border-radius:2px;}
.feat-pub:hover{background:var(--accent-soft);}
.feat-pub:hover::before{transform:scaleY(1);}
.feat-pub .pnum{font-family:var(--mono);font-size:12px;color:var(--faint);letter-spacing:0.05em;padding-top:8px;}
.feat-pub:hover .pnum{color:var(--accent);}
.feat-pub .ptop{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:9px;}
.feat-pub .venue{font-family:var(--mono);font-size:11px;letter-spacing:0.08em;text-transform:uppercase;color:var(--ink);}
.feat-pub .yr{font-family:var(--mono);font-size:11px;color:var(--faint);letter-spacing:0.05em;}
.badge{font-family:var(--mono);font-size:9.5px;letter-spacing:0.07em;text-transform:uppercase;color:var(--accent);border:1px solid var(--accent);padding:2px 7px;border-radius:3px;}
.badge.star{color:#9a7b1f;border-color:#cBa94a;background:rgba(201,169,74,0.08);}
.feat-pub .ptitle{font-size:24px;font-weight:400;line-height:1.26;letter-spacing:-0.015em;margin-bottom:9px;text-wrap:pretty;}
.feat-pub .authors{font-size:14.5px;font-weight:300;color:var(--ink-soft);line-height:1.5;margin-bottom:10px;}
.feat-pub .authors .me{font-weight:600;color:var(--ink);border-bottom:1.5px solid var(--accent);}
.plinks{display:flex;flex-wrap:wrap;gap:8px;}
.plinks a{font-family:var(--mono);font-size:11px;letter-spacing:0.04em;color:var(--muted);text-decoration:none;border:1px solid var(--line);padding:4px 11px;border-radius:999px;transition:all .2s;display:inline-flex;align-items:center;gap:6px;}
.plinks a:hover{color:var(--accent);border-color:var(--accent);transform:translateY(-1px);}

/* filters + compact list */
.subhead{font-family:var(--mono);font-size:10.5px;letter-spacing:0.16em;text-transform:uppercase;color:var(--muted);margin:46px 0 22px;display:flex;align-items:center;gap:14px;}
.subhead::after{content:"";flex:1;height:1px;background:var(--line-soft);}
.filters{display:flex;flex-direction:column;gap:11px;margin-bottom:26px;}
.filter-row{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.filter-row .label{margin-right:6px;min-width:46px;}
.chip{background:none;border:1px solid var(--line);cursor:pointer;border-radius:999px;padding:5px 13px;font-family:var(--mono);font-size:11px;letter-spacing:0.04em;color:var(--muted);transition:all .2s;}
.chip:hover{color:var(--ink);border-color:var(--muted);}
.chip.active{color:var(--paper);background:var(--ink);border-color:var(--ink);}

.pub-group{margin-bottom:22px;}
.pub-year-label{font-family:var(--mono);font-size:12px;letter-spacing:0.1em;color:var(--faint);margin-bottom:6px;padding-bottom:6px;border-bottom:1px solid var(--line-soft);}
.pub{padding:15px 14px 15px 18px;margin:0 -14px 0 -18px;border-radius:6px;transition:background .25s;position:relative;}
.pub::before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:2px;background:var(--accent);border-radius:2px;transform:scaleY(0);transform-origin:center;transition:transform .3s cubic-bezier(.2,.7,.2,1);}
.pub:hover{background:var(--accent-soft);}
.pub:hover::before{transform:scaleY(1);}
.pub .ptop2{display:flex;flex-wrap:wrap;align-items:baseline;gap:10px;margin-bottom:4px;}
.pub .v{font-family:var(--mono);font-size:10.5px;letter-spacing:0.06em;text-transform:uppercase;color:var(--muted);}
.pub .ptitle{font-size:18px;font-weight:400;line-height:1.32;letter-spacing:-0.01em;margin-bottom:5px;text-wrap:pretty;}
.pub .authors{font-size:13.5px;font-weight:300;color:var(--ink-soft);margin-bottom:6px;line-height:1.45;}
.pub .authors .me{font-weight:600;color:var(--ink);}
.pub .authors sup{font-size:1em;font-weight:700;line-height:0;margin-left:1px;vertical-align:0.22em;color:var(--accent);}
.pub .authors .equal-note{font-family:var(--mono);font-size:10px;letter-spacing:0.04em;text-transform:uppercase;color:var(--muted);white-space:nowrap;}
.pub-empty{font-style:italic;color:var(--muted);font-weight:300;padding:22px 0;}

/* ===== rows ===== */
.twocol{display:grid;grid-template-columns:1fr 1fr;gap:56px;}
.col-h{font-family:var(--mono);font-size:10.5px;letter-spacing:0.16em;text-transform:uppercase;color:var(--accent);margin-bottom:18px;}
.row{padding:16px 0;border-top:1px solid var(--line-soft);}
.row:first-of-type{border-top:none;}
.row .when{font-family:var(--mono);font-size:11px;color:var(--muted);letter-spacing:0.04em;margin-bottom:4px;}
.row .rtitle{font-size:17px;font-weight:400;line-height:1.3;}
.row .rorg{font-style:italic;color:var(--muted);font-size:15px;}
.row .rnote{font-size:14px;font-weight:300;color:var(--muted);margin-top:3px;line-height:1.45;}

.awards-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 56px;}
.award-row{display:grid;grid-template-columns:1fr auto;gap:18px;align-items:baseline;padding:14px 0;border-top:1px solid var(--line-soft);}
.award-row .rtitle{font-size:17px;font-weight:400;}
.award-row .org{font-family:var(--mono);font-size:10px;letter-spacing:0.06em;text-transform:uppercase;color:var(--faint);white-space:nowrap;}

/* ===== contact footer ===== */
footer{padding:11vh 0 12vh;border-top:1px solid var(--line);text-align:center;}
footer .big{font-size:clamp(30px,5vw,58px);font-weight:300;letter-spacing:-0.025em;margin-bottom:18px;line-height:1.1;}
footer .big a{color:var(--accent);text-decoration:none;border-bottom:2px solid transparent;transition:border-color .25s;}
footer .big a:hover{border-color:var(--accent);}
footer .flinks{display:flex;justify-content:center;flex-wrap:wrap;gap:0 22px;margin:34px 0 30px;}
footer .flinks a{font-family:var(--mono);font-size:12px;letter-spacing:0.04em;color:var(--ink);text-decoration:none;border-bottom:1px solid var(--line);padding-bottom:3px;transition:all .25s;}
footer .flinks a:hover{color:var(--accent);border-color:var(--accent);}
footer .colophon{font-family:var(--mono);font-size:10px;letter-spacing:0.1em;color:var(--faint);}

/* reveal */
/* reveal — visible by default; hidden state gated behind html.js-anim so any
   JS/transition failure can never leave content invisible */
.reveal{opacity:1;transform:none;}
html.js-anim .reveal{opacity:0;transform:translateY(22px);transition:opacity .8s cubic-bezier(.2,.6,.2,1),transform .8s cubic-bezier(.2,.6,.2,1);}
html.js-anim .reveal.in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){html.js-anim .reveal,html.js-anim .hero h1 .word{opacity:1!important;transform:none!important;transition:none!important;}}

/* mobile */
.menu-btn{display:none;}
@media(max-width:920px){
  .shell{grid-template-columns:1fr;}
  aside{position:static;height:auto;flex-direction:row;align-items:center;flex-wrap:wrap;gap:18px;border-right:none;border-bottom:1px solid var(--line);padding:26px 28px;}
  .portrait{margin-bottom:0;width:64px;height:64px;}
  aside .spacer{display:none;}
  nav.jump{display:none;}
  aside .contact{flex-direction:row;flex-wrap:wrap;gap:14px;margin-left:auto;}
  .about-grid,.twocol,.awards-grid{grid-template-columns:1fr;gap:32px;}
  .stats{grid-template-columns:1fr;}
  .stat{border-right:none;border-bottom:1px solid var(--line);}
  .stat:last-child{border-bottom:none;}
}
@media(max-width:560px){
  .feat-pub{grid-template-columns:1fr;}
  .feat-pub .pnum{display:none;}
  main{padding:0 24px;}
}