:root {
  --ink: #18212b;
  --muted: #596776;
  --blue: #245f91;
  --line: #dbe3ea;
  --wash: #f4f7fa;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  color: var(--ink);
  background: #fff;
  font-family: Georgia, "Times New Roman", serif;
  line-height: 1.65;
}
a { color: var(--blue); text-underline-offset: 3px; }
.container { width: min(900px, calc(100% - 36px)); margin: 0 auto; }
.lab-nav { padding: 22px 0; border-bottom: 1px solid var(--line); font-family: Arial, sans-serif; font-size: .92rem; }
.hero { padding: 72px 0 36px; text-align: center; }
h1 { margin: 0 auto 24px; max-width: 880px; font-size: clamp(2.35rem, 5.8vw, 4.25rem); font-weight: 500; line-height: 1.16; letter-spacing: -.025em; }
h2 { margin: 54px 0 16px; font-size: clamp(1.8rem, 3vw, 2.4rem); font-weight: 500; }
.authors { margin: 0 0 10px; color: #334354; font-family: Arial, sans-serif; font-size: 1.08rem; }
.affiliation { margin: 0; color: var(--muted); font-family: Arial, sans-serif; font-size: .94rem; }
.venue { display: inline-block; margin-top: 22px; padding: 7px 13px; border-radius: 999px; background: #e8f1f8; color: #174f7b; font-family: Arial, sans-serif; font-size: .84rem; font-weight: 700; }
.actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.button { display: inline-block; padding: 10px 20px; border-radius: 999px; color: #fff; background: var(--blue); font-family: Arial, sans-serif; font-weight: 700; text-decoration: none; }
.button.secondary { background: #303b46; }
.button.disabled { opacity: .55; cursor: default; }
.abstract { font-size: 1.17rem; }
.citation { position: relative; padding: 22px; overflow-x: auto; border: 1px solid var(--line); border-radius: 10px; background: var(--wash); font: .88rem/1.55 ui-monospace, SFMono-Regular, Menlo, monospace; white-space: pre; }
.footer { margin-top: 64px; padding: 24px 0 38px; border-top: 1px solid var(--line); color: var(--muted); font-family: Arial, sans-serif; font-size: .88rem; text-align: center; }
@media (max-width: 620px) { .hero { padding-top: 48px; } .abstract { font-size: 1.05rem; } }