/* ── Fonts (matches main site) ───────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Lato:ital,wght@0,400;0,700;1,400;1,700&display=swap');

:root {
  --link-color: #1772d0;
  --link-hover: #f09228;
  --text-color: #222;
  --muted-color: #555;
  --bg-color: #ffffff;
  --alt-bg-color: #f5f6f8;
  --border-color: #e2e4e8;
  --accent-color: #1772d0;
  --max-width: 980px;
  --narrow-width: 820px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'Lato', Verdana, Helvetica, sans-serif;
  font-size: 15px;
  color: var(--text-color);
  background: var(--bg-color);
  line-height: 1.6;
}

a { color: var(--link-color); text-decoration: none; }
a:hover, a:focus { color: var(--link-hover); }

/* ── PLACEHOLDER markers ─────────────────────────────── */
.placeholder {
  display: inline-block;
  padding: 2px 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .03em;
  color: #a05a00;
  background: #fff3da;
  border: 1px dashed #e0a73f;
  border-radius: 4px;
}
.placeholder-block {
  padding: 14px 18px;
  font-size: 13px;
  color: #a05a00;
  background: #fff3da;
  border: 1px dashed #e0a73f;
  border-radius: 6px;
}
.placeholder-media {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 220px;
  color: #a05a00;
  background: #fff3da;
  border: 1px dashed #e0a73f;
  border-radius: 6px;
  font-size: 13px;
  text-align: center;
  padding: 20px;
}

/* ── HERO ─────────────────────────────────────────────── */
.go-hero {
  padding: 64px 24px 48px;
  text-align: center;
  background: linear-gradient(180deg, #fbfcfe 0%, var(--bg-color) 100%);
  border-bottom: 1px solid var(--border-color);
}
.go-container {
  max-width: var(--max-width);
  margin: 0 auto;
}
.go-title {
  font-size: 34px;
  font-weight: 700;
  line-height: 1.35;
  margin: 0 0 18px;
}
.go-title .method-name { color: #1a9850; }
.go-venue {
  display: block;
  margin: 6px 0 22px;
  font-size: 20px;
  font-weight: 700;
  color: #d62728;
  letter-spacing: .03em;
}
.go-authors {
  font-size: 16px;
  margin-bottom: 6px;
}
.go-authors sup { font-size: 11px; }
.go-affiliation {
  font-size: 13px;
  color: var(--muted-color);
}
.go-equal-contrib {
  font-size: 12px;
  color: var(--muted-color);
  margin-bottom: 24px;
}

.go-action-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}
.go-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 18px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 700;
  border: 1px solid var(--border-color);
  background: #fff;
  color: var(--text-color);
  cursor: default;
  text-decoration: none;
}
a.go-btn {
  cursor: pointer;
}
a.go-btn:hover,
a.go-btn:focus {
  border-color: var(--accent-color);
  color: var(--accent-color);
}
.go-btn-disabled {
  color: #999;
  background: #f7f7f7;
}
.go-hf-logo {
  width: 16px;
  height: 16px;
  opacity: .6;
}

/* ── STICKY NAV ───────────────────────────────────────── */
.go-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--border-color);
}
.go-nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  font-size: 13px;
}
.go-nav-brand {
  font-weight: 700;
  color: var(--text-color);
}
.go-nav-links { display: flex; gap: 18px; flex-wrap: wrap; }
.go-nav-links a { color: var(--muted-color); font-weight: 700; }
.go-nav-links a.active,
.go-nav-links a:hover { color: var(--accent-color); }

/* ── SECTIONS ─────────────────────────────────────────── */
.go-section { padding: 48px 24px; }
.go-section.alt-bg { background: var(--alt-bg-color); }
.go-section-inner { max-width: var(--narrow-width); margin: 0 auto; }
.go-section-inner.go-wide { max-width: var(--max-width); }

.go-section-title {
  font-size: 22px;
  font-weight: 700;
  margin: 0 0 10px;
}
.go-section-subtitle {
  font-size: 14px;
  color: var(--muted-color);
  margin-bottom: 22px;
}
.go-subsec-title {
  font-size: 17px;
  font-weight: 700;
  margin: 30px 0 8px;
}

.go-abstract-text { font-size: 14.5px; }

/* ── TEASER ───────────────────────────────────────────── */
.go-teaser-wrap { text-align: center; }
.go-teaser-wrap img {
  max-width: 80%;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}
.go-teaser-caption {
  margin-top: 14px;
  font-size: 13.5px;
  color: var(--muted-color);
  text-align: center;
}
.go-teaser-caption .poly-red   { color: #d62728; font-weight: 700; }
.go-teaser-caption .line-yellow{ color: #b8960b; font-weight: 700; }
.go-teaser-caption .box-green  { color: #1a9850; font-weight: 700; }
.go-teaser-caption .point-blue { color: #1772d0; font-weight: 700; }

/* ── METHOD FIGURES (side-by-side) ───────────────────── */
.go-method-figures {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 24px;
}
@media (max-width: 760px) {
  .go-method-figures { grid-template-columns: 1fr; }
}
.go-method-figure { text-align: center; }
.go-method-figure img {
  max-width: 100%;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  background: #fff;
}


/* ── METHOD STEPS ─────────────────────────────────────── */
.go-pipeline-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 24px;
}
@media (max-width: 760px) {
  .go-pipeline-steps { grid-template-columns: 1fr; }
}
.go-pipeline-step {
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 18px;
}
.go-pipeline-step h3 {
  font-size: 14.5px;
  margin: 10px 0 8px;
}
.go-pipeline-step p {
  font-size: 13.5px;
  color: var(--muted-color);
  margin: 0;
}
.go-step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--accent-color);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
}

/* ── RESULT FIGURES ───────────────────────────────────── */
.go-figure-wrap {
  text-align: center;
  margin-bottom: 30px;
}
.go-figure-wrap img {
  max-width: 75%;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}
.go-figure-caption {
  margin-top: 12px;
  font-size: 13px;
  color: var(--muted-color);
  text-align: center;
}
.go-figure-caption .poly-red   { color: #d62728; font-weight: 700; }
.go-figure-caption .line-yellow{ color: #b8960b; font-weight: 700; }
.go-figure-caption .box-green  { color: #1a9850; font-weight: 700; }
.go-figure-caption .point-blue { color: #1772d0; font-weight: 700; }

/* ── RESULTS TABLE ────────────────────────────────────── */
.go-results-table-wrap { overflow-x: auto; margin-top: 12px; }
.go-results-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  min-width: 520px;
}
.go-results-table th, .go-results-table td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--border-color);
  text-align: center;
}
.go-results-table th { font-weight: 700; background: var(--alt-bg-color); }
.go-results-table .ta-left { text-align: left; }
.go-results-table tr.group-start td { border-top: 2px solid var(--border-color); }
.go-results-table tr.ours td { background: #eef6ff; }
.go-results-table tr.ours.group-start td { border-top: 2px solid var(--accent-color); }
.go-results-table em { font-style: italic; color: var(--muted-color); }
.go-results-table td[colspan] em { color: var(--text-color); font-weight: 700; font-style: italic; }
.table-caption {
  font-size: 12px;
  color: var(--muted-color);
  margin-top: 10px;
}

/* ── BIBTEX ───────────────────────────────────────────── */
.go-bibtex-box {
  position: relative;
  background: #f7f8fa;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 18px;
}
.go-bibtex-box pre {
  margin: 0;
  font-size: 12.5px;
  overflow-x: auto;
  white-space: pre;
}
.go-bibtex-copy {
  position: absolute;
  top: 12px;
  right: 12px;
  padding: 5px 12px;
  font-size: 12px;
  font-weight: 700;
  font-family: 'Lato', Verdana, Helvetica, sans-serif;
  color: var(--text-color);
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 14px;
  cursor: pointer;
}
.go-bibtex-copy:hover { border-color: var(--accent-color); color: var(--accent-color); }
.go-bibtex-copy.copied { color: #1a9850; border-color: #1a9850; }

/* ── FOOTER ───────────────────────────────────────────── */
.go-footer {
  padding: 24px;
  text-align: center;
  font-size: 12.5px;
  color: var(--muted-color);
  border-top: 1px solid var(--border-color);
}