:root {
  --fg: #1d2330;
  --muted: #555e6e;
  --accent: #1f5fbf;
  --accent-dark: #174a95;
  --bg: #ffffff;
  --panel: #f4f6fa;
  --border: #dde2ea;
  --max: 1060px;
  font-size: 17px;
}
* { box-sizing: border-box; }
body {
  margin: 0; color: var(--fg); background: var(--bg); line-height: 1.6;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
.mono, code, pre { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
a { color: var(--accent); }
a:hover { color: var(--accent-dark); }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
.skip { position: absolute; left: -999px; top: 0; background: var(--fg); color: #fff; padding: .5rem 1rem; }
.skip:focus { left: 0; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.hero { text-align: center; padding: 3.5rem 1.25rem 1.5rem; max-width: var(--max); margin: 0 auto; }
.venue { margin: 0 0 .5rem; color: var(--accent-dark); font-weight: 600; letter-spacing: .02em; }
h1 { font-size: 2.8rem; margin: 0; line-height: 1.15; }
.subtitle { font-size: 1.3rem; margin: .6rem auto 1.5rem; max-width: 52rem; color: var(--fg); }
.authors, .affiliations { list-style: none; padding: 0; margin: 0 auto .4rem; display: flex; flex-wrap: wrap; justify-content: center; gap: .2rem 1.1rem; }
.authors { font-size: 1.05rem; }
.affiliations { font-size: .9rem; color: var(--muted); margin-bottom: 1.4rem; }
.buttons { display: flex; flex-wrap: wrap; gap: .6rem; justify-content: center; }
.btn {
  display: inline-block; padding: .55rem 1.15rem; border-radius: 999px; background: var(--fg); color: #fff;
  text-decoration: none; font-weight: 600;
}
.btn:hover { background: var(--accent-dark); color: #fff; }

main { max-width: var(--max); margin: 0 auto; padding: 0 1.25rem 3rem; }
section { padding-top: 2.2rem; }
h2 { font-size: 1.65rem; border-bottom: 2px solid var(--border); padding-bottom: .3rem; margin: 0 0 1rem; }
h3 { font-size: 1.15rem; margin: 1.4rem 0 .6rem; }

.strip { display: grid; grid-template-columns: repeat(5, 1fr); gap: .6rem; }
.strip figure { margin: 0; text-align: center; }
.strip img { width: 100%; height: auto; border-radius: 6px; display: block; }
.strip figcaption { font-size: .85rem; color: var(--muted); margin-top: .25rem; }
.tldr { background: var(--panel); border-left: 4px solid var(--accent); padding: .9rem 1.1rem; margin: 1.2rem 0 0; border-radius: 0 6px 6px 0; }

.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: .8rem; margin-bottom: 1rem; }
.stats > div { background: var(--panel); border-radius: 8px; padding: .9rem; text-align: center; }
.num { display: block; font-size: 1.9rem; font-weight: 700; color: var(--accent-dark); }
.lbl { font-size: .9rem; color: var(--muted); }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 1.8rem; align-items: start; }
.two-col > * { min-width: 0; } /* let wide <pre>/tables scroll instead of widening the column */
figure { margin: 1rem 0; }
figure img { max-width: 100%; height: auto; display: block; margin: 0 auto; }
figure.wide img { max-width: 720px; width: 100%; }
figcaption { font-size: .9rem; color: var(--muted); text-align: center; margin-top: .4rem; }
.figs figure { margin-top: 0; }

.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: .93rem; }
th, td { padding: .45rem .6rem; border-bottom: 1px solid var(--border); text-align: left; }
thead th { border-bottom: 2px solid var(--fg); }
tbody tr:hover { background: var(--panel); }
td.mono { font-size: .85rem; }
.note { font-size: .88rem; color: var(--muted); }
ul.plain, ul.findings { padding-left: 1.2rem; }
ul.findings li { margin-bottom: .45rem; }

table.grid { font-size: .85rem; }
table.grid th, table.grid td { text-align: center; padding: .25rem; border-bottom: none; }
table.grid tbody th { text-align: right; white-space: nowrap; font-weight: 600; color: var(--muted); }
table.grid img { width: 100%; max-width: 128px; height: auto; display: block; margin: 0 auto; border-radius: 4px; }

pre { background: #0f1724; color: #e6edf6; padding: 1rem; border-radius: 8px; overflow-x: auto; font-size: .82rem; line-height: 1.45; }
code { font-size: .9em; }
p code { background: var(--panel); padding: .05rem .3rem; border-radius: 4px; }
.bibtex { position: relative; }
.copy {
  position: absolute; top: .6rem; right: .6rem; border: 1px solid #4a5568; background: #1f2937; color: #e6edf6;
  border-radius: 6px; padding: .3rem .7rem; cursor: pointer; font-size: .85rem;
}
.copy:hover { background: #374151; }

footer { text-align: center; color: var(--muted); font-size: .88rem; padding: 2rem 1.25rem 3rem; border-top: 1px solid var(--border); }

@media (max-width: 760px) {
  :root { font-size: 16px; }
  h1 { font-size: 2.1rem; }
  .subtitle { font-size: 1.1rem; }
  .two-col { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .strip { grid-template-columns: repeat(3, 1fr); }
}
@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; } }
html { scroll-behavior: smooth; }