:root {
  --text: #1f2937;
  --muted-text: #5f6b7a;
  --soft-text: #7a8797;
  --accent: #2f6f9f;
  --accent-dark: #215372;
  --bg: #ffffff;
  --muted-bg: #f6f7f9;
  --border: #e3e7ec;
  --shadow: 0 16px 40px rgba(21, 35, 48, 0.08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  background: var(--bg);
  font-family: "Noto Sans", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.7;
}

a { color: var(--accent); }
a:hover { color: var(--accent-dark); }

.container { width: min(100% - 36px, 980px); margin: 0 auto; }
.container.narrow { max-width: 860px; }
.container.wide { max-width: 1120px; }
.center { text-align: center; }

.hero { padding: 68px 0 34px; }
.paper-title {
  margin: 0 auto 22px;
  max-width: 1000px;
  font-family: "Google Sans", "Noto Sans", sans-serif;
  font-size: clamp(2.2rem, 5.2vw, 4.2rem);
  line-height: 1.08;
  letter-spacing: -0.035em;
  font-weight: 700;
  color: #222b34;
}
.authors { font-size: 1.14rem; margin-bottom: 8px; }
.authors a { text-decoration: none; margin: 0 3px; }
sup { font-size: 0.68em; vertical-align: super; }
.venue { margin: 8px 0; font-size: 1.22rem; font-weight: 700; }
.affiliations {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 6px 22px;
  color: var(--muted-text);
  font-size: 0.96rem;
}
.link-row {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}
.pill {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 10px 18px;
  border-radius: 999px;
  color: #fff;
  background: #363636;
  text-decoration: none;
  font-size: 0.94rem;
  font-weight: 600;
  transition: transform 160ms ease, background 160ms ease;
}
.pill:hover { color: #fff; background: #111; transform: translateY(-1px); }

.section { padding: 52px 0; }
.section.muted { background: var(--muted-bg); }
h2 {
  margin: 0 0 24px;
  font-family: "Google Sans", "Noto Sans", sans-serif;
  font-size: clamp(1.8rem, 3.3vw, 2.5rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  font-weight: 500;
}
h3 { font-family: "Google Sans", "Noto Sans", sans-serif; }
.section-lead { color: var(--muted-text); margin: -10px auto 28px; max-width: 760px; }
.abstract { text-align: justify; margin: 0; }

figure { margin: 0; }
.main-figure {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 8px;
  background: #fff;
}
.teaser-section { padding-top: 20px; }
.teaser-section .main-figure { box-shadow: var(--shadow); }
figcaption {
  margin-top: 14px;
  color: var(--muted-text);
  font-size: 0.95rem;
  line-height: 1.55;
}
.method-figure { border: 1px solid var(--border); }
.method-copy {
  max-width: 900px;
  margin: 28px auto 0;
  text-align: left;
}
.method-copy p { margin: 0 0 14px; }

.highlight-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.highlight-card {
  padding: 28px 24px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: 0 5px 18px rgba(21, 35, 48, 0.035);
}
.highlight-icon { color: var(--accent); font-size: 1.65rem; }
.highlight-card h3 { margin: 8px 0 8px; font-size: 1.17rem; }
.highlight-card p { margin: 0; color: var(--muted-text); font-size: 0.96rem; }

.metric-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin: 28px auto 34px;
  max-width: 850px;
}
.metric-card {
  min-height: 130px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
}
.metric-card strong {
  color: var(--accent);
  font-family: "Google Sans", sans-serif;
  font-size: 2rem;
  line-height: 1;
}
.metric-card span { margin-top: 10px; color: var(--muted-text); font-size: 0.9rem; }
.results-figure { margin-top: 30px; }


.bibtex-wrap { position: relative; }
pre {
  margin: 0;
  padding: 24px;
  overflow-x: auto;
  border-radius: 8px;
  background: #eeeeee;
  color: #24292f;
  text-align: left;
  font: 0.88rem/1.6 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.copy-button {
  position: absolute;
  top: 10px;
  right: 10px;
  padding: 7px 11px;
  border: 1px solid #ccd2d8;
  border-radius: 7px;
  background: rgba(255,255,255,0.9);
  color: #374151;
  font: inherit;
  font-size: 0.8rem;
  cursor: pointer;
}
.copy-button:hover { background: #fff; }

footer { padding: 42px 0; background: #fafafa; border-top: 1px solid var(--border); color: var(--muted-text); }
footer p { margin: 0 0 5px; }
.footer-small { font-size: 0.86rem; color: var(--soft-text); }

@media (max-width: 760px) {
  body { font-size: 16px; }
  .hero { padding-top: 46px; }
  .section { padding: 42px 0; }
  .highlight-grid, .metric-grid { grid-template-columns: 1fr; }
  .metric-card { min-height: 110px; }
  .abstract { text-align: left; }
}