:root{
  --bg:#0b0f14; --bg-soft:#111823; --card:#151d29; --line:#22303f;
  --fg:#e8eef6; --muted:#9fb0c3; --accent:#4ea1ff; --accent2:#7ce7c4;
  --radius:14px; --maxw:1060px;
}
:root[data-theme="light"]{
  --bg:#f7f9fc; --bg-soft:#eef2f7; --card:#ffffff; --line:#dde5ee;
  --fg:#101722; --muted:#5a6b7d; --accent:#1668d6; --accent2:#0f9d76;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--fg);
  font-family:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Inter,Arial,sans-serif;
  line-height:1.65;-webkit-font-smoothing:antialiased;
}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
code{background:var(--bg-soft);border:1px solid var(--line);border-radius:6px;padding:.08rem .34rem;font-size:.88em}
pre{background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius);padding:1rem;overflow:auto}
pre code{background:none;border:0;padding:0}

/* nav */
.nav{position:sticky;top:0;z-index:50;backdrop-filter:blur(10px);
  background:color-mix(in srgb,var(--bg) 82%,transparent);border-bottom:1px solid var(--line)}
.nav-inner{max-width:var(--maxw);margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:.7rem 1.1rem}
.brand{font-weight:800;letter-spacing:.02em;color:var(--fg)}
.nav-links{display:flex;gap:1rem;align-items:center;flex-wrap:wrap}
.nav-links a{color:var(--muted);font-size:.92rem}
.nav-links a:hover{color:var(--fg)}
.icon-btn{background:none;border:1px solid var(--line);color:var(--fg);border-radius:8px;cursor:pointer;padding:.15rem .5rem}

/* layout */
main{max-width:var(--maxw);margin:0 auto;padding:0 1.1rem}
.section{padding:2.4rem 0;border-top:1px solid var(--line)}
h2{font-size:1.35rem;margin:0 0 1rem}
.muted{color:var(--muted)}

/* hero */
.hero{padding:3.2rem 0 2.4rem}
.eyebrow{color:var(--accent2);font-weight:600;letter-spacing:.08em;text-transform:uppercase;font-size:.78rem;margin:0 0 .6rem}
.hero h1{font-size:clamp(1.7rem,3.6vw,2.7rem);line-height:1.18;margin:.2rem 0 .7rem;
  background:linear-gradient(120deg,var(--fg),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.authors{margin:.2rem 0 .8rem;font-weight:600}
.aff{color:var(--muted);font-weight:400}
.tagline{color:var(--muted);max-width:60ch;font-size:1.05rem}
.cta{display:flex;gap:.6rem;flex-wrap:wrap;margin-top:1.3rem}
.btn{display:inline-block;border:1px solid var(--line);background:var(--card);color:var(--fg);
  padding:.55rem .95rem;border-radius:10px;font-size:.92rem;cursor:pointer}
.btn:hover{border-color:var(--accent);text-decoration:none}
.btn.primary{background:linear-gradient(120deg,var(--accent),var(--accent2));color:#04121f;border:0;font-weight:700}

/* cards */
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:.9rem}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:1rem}
.card .k{display:inline-block;font-size:.76rem;font-weight:700;color:var(--accent2);letter-spacing:.05em;text-transform:uppercase;margin-bottom:.35rem}
.card p{margin:.2rem 0 0;color:var(--muted);font-size:.95rem}

/* gallery */
.gallery{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:1rem}
.gallery figure{margin:0;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.gallery img{width:100%;display:block;background:#fff}
.gallery figcaption{padding:.6rem .8rem;color:var(--muted);font-size:.86rem}

/* cite */
.cite-wrap{position:relative}
.cite-wrap .btn{position:absolute;top:.7rem;right:.7rem}
.footer{border-top:1px solid var(--line);margin-top:2rem;padding:2rem 1.1rem;text-align:center;color:var(--muted)}
.footer a{color:var(--accent)}

@media (max-width:640px){.nav-links{gap:.6rem}.nav-links a{font-size:.85rem}}

/* --- additions for the two-part site --- */
.heroimg{width:100%;max-width:100%;border-radius:var(--radius);border:1px solid var(--line);display:block;margin:0 0 1.6rem}
figure.wide{margin:0 0 1rem}
figure.wide img{width:100%;border:1px solid var(--line);border-radius:var(--radius);background:#fff;display:block}
figure.wide figcaption{margin-top:.6rem;color:var(--muted);font-size:.9rem}
.citeblock{border-left:3px solid var(--accent);padding:.35rem 0 .35rem .9rem;color:var(--fg)}

/* --- tables for the data / full-results sections --- */
.tbl{width:100%;border-collapse:collapse;margin:.6rem 0 1.4rem;font-size:.9rem}
.tbl th,.tbl td{border:1px solid var(--line);padding:.42rem .6rem;text-align:left;vertical-align:top}
.tbl thead th{background:var(--bg-soft);color:var(--fg);font-weight:700}
.tbl tbody tr:nth-child(even){background:color-mix(in srgb,var(--bg-soft) 45%,transparent)}
.tbl a{color:var(--accent)}
.tbl-wrap{overflow-x:auto}
h3{font-size:1.02rem;margin:1.4rem 0 .4rem;color:var(--fg)}