:root {
  --bg: #ffffff;
  --fg: #1f2933;
  --muted: #5f6c7b;
  --accent: #1a5fb4;
  --accent2: #d9480f;
  --glass: rgba(255,255,255,.80);
  --border: #e3e8ee;
  --card: #f7f9fb;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14181d;
    --fg: #e6eaee;
    --muted: #9aa7b4;
    --accent: #7ab2ff;
    --accent2: #ffa94d;
    --glass: rgba(20,24,29,.78);
    --border: #2a323b;
    --card: #1b2128;
  }
}
* { box-sizing: border-box; }
#flow { position: fixed; inset: 0; width: 100%; height: 100%; z-index: -1; }
main.wrap {
  background: var(--glass); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
  border: 1px solid var(--border); border-radius: 14px;
  margin-top: 1.5rem; padding: 0 1.75rem 1rem;
}
html { scroll-behavior: smooth; scroll-padding-top: 4rem; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 17px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
.wrap { max-width: 800px; margin: 0 auto; padding: 0 16px; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.site-header {
  position: sticky; top: 0; z-index: 10;
  background: var(--glass); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.site-header .wrap {
  display: flex; flex-wrap: wrap; align-items: center;
  justify-content: space-between; gap: .25rem 1.5rem; padding-top: .6rem; padding-bottom: .6rem;
}
.brand { font-weight: 700; color: var(--fg); }
nav a { margin-right: 1rem; color: var(--muted); font-size: .95rem; }
nav a:last-child { margin-right: 0; }
nav a:hover { color: var(--accent); text-decoration: none; }

section { padding: 2rem 0 .5rem; }
.hero { padding-top: 3rem; }
.portrait {
  float: right; width: 200px; height: auto; margin: 0 0 1rem 1.5rem;
  border-radius: 10px; object-fit: cover;
}
@media (max-width: 520px) {
  .portrait { float: none; display: block; margin: 0 0 1rem; width: 160px; }
}
h1 { font-size: 2.4rem; margin: 0 0 .25rem; line-height: 1.2; background: linear-gradient(90deg, var(--accent), var(--accent2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
h2 { font-size: 1.4rem; margin: 1.5rem 0 .75rem; padding-bottom: .3rem; border-bottom: 2px solid var(--accent2); display: inline-block; padding-right: 1.5rem; }
.hero h2 { font-size: 1.15rem; }
h3 { font-size: 1.05rem; margin: 1rem 0 .3rem; }
.title { color: var(--muted); margin-top: 0; }

.links a {
  display: inline-block; margin: 0 .5rem .5rem 0; padding: .3rem .8rem;
  border: 1px solid var(--border); border-radius: 999px; font-size: .92rem;
}
.links a:hover { background: var(--card); text-decoration: none; }

.pubs { padding-left: 1.4rem; }
.pubs li { margin-bottom: 1.1rem; }
.pubs li > a { font-weight: 600; }
.authors, .venue { font-size: .93rem; color: var(--muted); }

.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 8px; padding: .5rem 1.1rem; margin-bottom: 1rem;
}
.card h3 { margin-top: .5rem; }

footer { margin-top: 3rem; padding-top: 1rem; padding-bottom: 2rem; border-top: 1px solid var(--border); color: var(--muted); font-size: .9rem; }

@media (max-width: 520px) {
  h1 { font-size: 1.9rem; }
  body { font-size: 16px; }
}