:root {
  --ink: #1f2328;
  --muted: #57606a;
  --accent: #0e8c99;
  --line: #d8dee4;
  --soft: #f6f8fa;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: #ffffff;
  color: var(--ink);
  font-family: "Noto Sans", -apple-system, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.65;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.hero, .section, footer {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 16px;
}

.hero { text-align: center; padding-top: 56px; padding-bottom: 16px; }

.pub-title {
  font-size: 2.4rem;
  line-height: 1.25;
  font-weight: 600;
  margin: 0 0 18px;
}
.brand { color: var(--accent); }

.venue { color: var(--muted); margin: 0; }
.award { font-weight: 600; margin: 4px 0 22px; }

.authors { font-size: 1.15rem; margin: 0 0 4px; }
.authors span { display: inline-block; margin: 0 10px; }
.authors sup, .affils sup { font-size: 0.7em; }
.affils { color: var(--muted); margin: 0 0 22px; }

.buttons { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 18px;
  border-radius: 999px;
  background: #363636;
  color: #fff;
  font-size: 0.95rem;
}
.btn:hover { background: #111; text-decoration: none; }
.btn.disabled { background: #9aa1a8; cursor: default; }

.section { padding-top: 28px; padding-bottom: 8px; }

h2 {
  font-size: 1.75rem;
  font-weight: 600;
  text-align: center;
  margin: 24px 0 16px;
}
h3 { font-size: 1.2rem; font-weight: 600; margin: 24px 0 8px; }

.justify { text-align: justify; hyphens: auto; }

figure { margin: 20px 0; }
figure img { width: 100%; height: auto; display: block; }
figcaption, .caption {
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.5;
  margin-top: 10px;
  text-align: justify;
}
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.two-col figure { margin: 0; }
.two-col figcaption { text-align: center; }

.takeaways { list-style: none; padding: 0; margin: 0; }
.takeaways li { margin-bottom: 12px; text-align: justify; }

.eq { text-align: center; font-family: "Castoro", Georgia, serif; font-size: 1.2rem; margin: 12px 0; }

.ops { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin: 14px 0; }
.op {
  border: 1px solid var(--line);
  border-left: 4px solid var(--accent);
  border-radius: 6px;
  padding: 10px 14px;
  background: var(--soft);
}
.op b { display: block; }
.op span { font-size: 0.93rem; color: var(--muted); }

.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; margin: 16px auto; min-width: 560px; }
caption { caption-side: top; color: var(--muted); font-size: 0.92rem; padding-bottom: 8px; text-align: left; }
th, td { padding: 6px 16px; text-align: right; }
th:first-child, td:first-child { text-align: left; }
thead tr { border-top: 2px solid var(--ink); border-bottom: 1px solid var(--ink); }
tbody tr:last-child { border-bottom: 2px solid var(--ink); }
tr.sep { border-top: 1px solid var(--line); }

pre {
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 14px 16px;
  overflow-x: auto;
  font-size: 0.85rem;
}

footer { color: var(--muted); font-size: 0.85rem; text-align: center; padding: 32px 16px 48px; }

@media (max-width: 700px) {
  .pub-title { font-size: 1.6rem; }
  .two-col, .ops { grid-template-columns: 1fr; }
}