:root{
  --ink:#16202A;
  --paper:#FBFAF7;
  --paper-alt:#F2F0E9;
  --signal:#B33F32;
  --pulse:#1F6F78;
  --mist:#6B7480;
  --line:#E3E0D6;
  --radius:10px;
  --maxw:920px;
  font-size:112.5%; /* 18px base */
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:'Inter','Noto Sans TC',sans-serif;
  font-size:1rem;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3{
  font-family:'Fraunces','Noto Serif TC',serif;
  font-weight:500;
  line-height:1.25;
  margin:0 0 .6em;
}
h2{font-size:1.6rem;letter-spacing:.01em;}
a{color:inherit;}
img{max-width:100%;display:block;}
ul{list-style:none;margin:0;padding:0;}

.skip-link{
  position:absolute;left:-999px;top:0;
  background:var(--ink);color:var(--paper);
  padding:.6em 1em;z-index:100;border-radius:0 0 var(--radius) 0;
}
.skip-link:focus{left:0;}

:focus-visible{outline:2px solid var(--signal);outline-offset:2px;}

/* topbar */
.topbar{
  position:sticky;top:0;z-index:20;
  background:rgba(251,250,247,.92);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);
}
.topbar-inner{
  max-width:var(--maxw);margin:0 auto;
  display:flex;align-items:center;gap:1rem;
  padding:.8rem 1.2rem;
}
.brand{
  font-family:'Fraunces','Noto Serif TC',serif;
  font-size:1.1rem;font-weight:600;text-decoration:none;flex-shrink:0;
}
.pillnav{
  display:flex;gap:.4rem;overflow-x:auto;flex:1;
  scrollbar-width:none;
}
.pillnav::-webkit-scrollbar{display:none;}
.pillnav a{
  font-size:.92rem;text-decoration:none;white-space:nowrap;
  padding:.45em 1em;border-radius:999px;border:1px solid var(--line);
  color:var(--ink);
}
.pillnav a:hover{border-color:var(--pulse);color:var(--pulse);}
.lang-toggle{
  flex-shrink:0;font-family:inherit;font-size:.85rem;font-weight:600;
  border:1px solid var(--ink);background:transparent;color:var(--ink);
  padding:.5em 1em;border-radius:999px;cursor:pointer;
}
.lang-toggle:hover{background:var(--ink);color:var(--paper);}

/* hero */
.hero{padding:3rem 1.2rem 0;}
.hero-inner{
  max-width:var(--maxw);margin:0 auto;
  display:flex;gap:2rem;align-items:center;flex-wrap:wrap;
}
.hero-photo{
  width:132px;height:132px;border-radius:50%;
  object-fit:cover;border:1px solid var(--line);
  flex-shrink:0;
}
.hero-text{flex:1;min-width:240px;}
.hero-name{
  font-family:'Fraunces','Noto Serif TC',serif;
  font-size:clamp(1.9rem,5vw,2.6rem);font-weight:600;
  margin:0 0 .15em;line-height:1.15;
}
.hero-title{
  font-size:1.05rem;color:var(--mist);margin:0 0 1em;
}
.tag-row{display:flex;flex-wrap:wrap;gap:.5em;margin-bottom:1.1em;}
.tag-row li{
  font-size:.85rem;padding:.3em .85em;border-radius:999px;
  background:var(--paper-alt);color:var(--ink);
}
.contact-row{display:flex;flex-wrap:wrap;gap:.7em;}
.contact-row a{
  display:inline-flex;align-items:center;gap:.4em;
  font-size:.9rem;text-decoration:none;
  border:1px solid var(--line);border-radius:999px;
  padding:.4em 1em;
}
.contact-row a:hover{border-color:var(--signal);color:var(--signal);}

.pulse-divider{max-width:var(--maxw);margin:2rem auto 0;padding:0 1.2rem;}
.pulse-divider svg{width:100%;height:32px;display:block;}
.pulse-line{
  stroke:var(--signal);stroke-width:2;stroke-linecap:round;stroke-linejoin:round;
  stroke-dasharray:1600;stroke-dashoffset:1600;
  animation:draw 2.4s ease-out forwards;
}
@keyframes draw{to{stroke-dashoffset:0;}}
@media (prefers-reduced-motion:reduce){
  .pulse-line{animation:none;stroke-dashoffset:0;}
  html{scroll-behavior:auto;}
}

/* sections */
.section{max-width:var(--maxw);margin:0 auto;padding:3.2rem 1.2rem;}
.section.alt{background:var(--paper-alt);max-width:none;}
.section.alt > *{max-width:var(--maxw);margin-left:auto;margin-right:auto;}
.prose{font-size:1.05rem;max-width:68ch;}

/* project cards */
.card-grid{
  display:grid;gap:1.1rem;
  grid-template-columns:repeat(auto-fit,minmax(240px,1fr));
}
.card{
  background:var(--paper);border:1px solid var(--line);
  border-radius:var(--radius);padding:1.3rem 1.4rem;
}
.section.alt .card{background:var(--paper);}
.card h3{font-size:1.1rem;margin-bottom:.4em;}
.card p{font-size:.96rem;color:var(--mist);margin:0;}
.card-link{
  display:inline-block;margin-top:.8em;font-size:.9rem;
  color:var(--pulse);text-decoration:none;
}
.card-link:hover{text-decoration:underline;}

/* publications */
.tab-row{display:flex;gap:.5em;flex-wrap:wrap;margin-bottom:1.4rem;}
.tab-row button{
  font-family:inherit;font-size:.9rem;cursor:pointer;
  border:1px solid var(--line);background:transparent;color:var(--ink);
  padding:.5em 1.1em;border-radius:999px;
}
.tab-row button[aria-pressed="true"]{
  background:var(--ink);border-color:var(--ink);color:var(--paper);
}
.pub-list li{
  padding:1rem 0;border-top:1px solid var(--line);
}
.pub-list li:last-child{border-bottom:1px solid var(--line);}
.grant-list{margin-bottom:1.6rem;}
.grant-list li{padding:.9rem 0;border-top:1px solid var(--line);}
.grant-list:last-of-type{margin-bottom:0;}
.section h3{font-size:1.05rem;margin-top:1.6rem;margin-bottom:.4em;}
.pub-title{font-size:1rem;margin:0 0 .25em;}
.pub-meta{font-size:.88rem;color:var(--mist);display:flex;gap:.6em;flex-wrap:wrap;align-items:center;}
.badge{
  font-size:.72rem;padding:.15em .6em;border-radius:999px;
  background:rgba(31,111,120,.12);color:var(--pulse);font-weight:600;
}
.role-badge{
  font-size:.72rem;padding:.15em .6em;border-radius:999px;
  background:rgba(179,63,50,.1);color:var(--signal);font-weight:600;
}
.show-all{
  margin-top:1.2rem;font-family:inherit;font-size:.92rem;cursor:pointer;
  border:none;background:none;color:var(--pulse);text-decoration:underline;
  padding:.3em 0;
}

/* news */
.news-list{display:flex;flex-direction:column;gap:1.2rem;}
.news-item{
  background:var(--paper);border:1px solid var(--line);
  border-radius:var(--radius);padding:1.3rem 1.4rem;
}
.news-date{font-size:.82rem;color:var(--mist);display:block;margin-bottom:.4em;}
.news-item h3{font-size:1.05rem;margin-bottom:.4em;}
.news-item p{font-size:.95rem;color:var(--mist);margin:0 0 .6em;}
.news-item a{font-size:.9rem;color:var(--pulse);text-decoration:none;}
.news-item a:hover{text-decoration:underline;}

/* footer */
.site-footer{
  max-width:var(--maxw);margin:0 auto;padding:2.5rem 1.2rem 4rem;
  border-top:1px solid var(--line);color:var(--mist);font-size:.88rem;
}
.site-footer p{margin:.3em 0;}

@media (max-width:640px){
  :root{font-size:106.25%;} /* 17px */
  .hero{padding-top:2.2rem;}
  .hero-inner{gap:1.2rem;}
  .hero-photo{width:96px;height:96px;}
  .section{padding:2.4rem 1.1rem;}
}