:root{
  --bg: #f4f6fb;
  --text: #101828;
  --muted: #475467;
  --accent: #224b8d;
  --accent-soft: rgba(34, 75, 141, 0.08);
  --bubble-bg: #ffffff;
  --soft: rgba(16, 24, 40, 0.04);
  --border-soft: rgba(16, 24, 40, 0.10);
  --shadow: 0 12px 34px rgba(16, 24, 40, 0.10), 0 2px 8px rgba(16, 24, 40, 0.06);
  --radius: 20px;
}

*{ box-sizing: border-box; }
html, body{ padding: 0; margin: 0; }
html{ scroll-behavior: smooth; }

body{
  background: radial-gradient(circle at top left, rgba(34, 75, 141, 0.10), transparent 34rem), var(--bg);
  color: var(--text);
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.62;
}

.page{
  width: min(1080px, 92vw);
  margin: 10px auto 56px;
  display: grid;
  gap: 16px;
}

.hero{
  background: transparent;
  padding: 0 16px 6px;
  text-align: center;
}

h1, h2{ font-family: "Source Serif 4", Georgia, serif; letter-spacing: -0.025em; }

h1{
  font-size: clamp(24px, 2.65vw, 38px);
  line-height: 1.02;
  font-weight: 700;
  text-align: center;
  margin: 0 0 10px 0;
  white-space: nowrap;
}

h2{
  font-size: clamp(25px, 3vw, 36px);
  line-height: 1.16;
  font-weight: 700;
  margin: 0 0 18px 0;
  text-align: center;
}

h3{ font-size: 1.05rem; font-weight: 700; margin: 0 0 8px 0; }
p{ margin: 0 0 14px 0; color: var(--text); }
a{ color: var(--accent); text-underline-offset: 3px; }

.author-line{
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: baseline;
  gap: 4px 20px;
  width: 100%;
  text-align: center;
  font-family: "Source Serif 4", Georgia, serif;
  font-size: clamp(16px, 1.45vw, 20px);
  line-height: 1.05;
  margin: 0 auto 8px;
}
.author-line span{ display: inline-flex; align-items: baseline; justify-content: center; white-space: nowrap; }
.author-line a{ color: var(--accent); display: inline-block; text-align: center; }
.author-line sup{ color: var(--text); font-size: 0.58em; margin-left: 3px; transform: none; }

.affiliation-block{
  display: grid;
  place-items: center;
  width: 100%;
  text-align: center;
  font-family: "Source Serif 4", Georgia, serif;
  font-size: clamp(14px, 1.25vw, 17px);
  line-height: 1.12;
  margin: 0 auto 8px;
}
.affiliation-block p{ text-align: center; margin: 0; color: var(--text); }
.affiliation-block a{ display: inline-block; text-align: center; }
.affiliation-block sup{ color: var(--text); font-size: 0.68em; margin-right: 5px; }

.tagline{
  max-width: 920px;
  margin: 8px auto 6px;
  text-align: center;
  font-family: "Source Serif 4", Georgia, serif;
  font-size: clamp(15px, 1.35vw, 18px);
  line-height: 1.18;
  font-weight: 700;
  font-style: italic;
}

.hero-links{
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 4px;
  font-family: "Source Serif 4", Georgia, serif;
  font-size: clamp(16px, 1.45vw, 19px);
  line-height: 1.1;
}
.paper-link{ color: var(--accent); text-decoration: none; }
.paper-link:hover{ text-decoration: underline; }

.bubble{
  background: var(--bubble-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 30px 44px;
  border: 1px solid rgba(255, 255, 255, 0.75);
}
.bubble > p{ text-align: justify; }

.mono{ font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace; font-size: 0.96em; }

.contrib-grid, .method-grid{
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-top: 16px;
}
.three-card-grid{ grid-template-columns: repeat(3, 1fr); }

.contrib-card, .method-card{
  background: var(--soft);
  border: 1px solid var(--border-soft);
  border-radius: 16px;
  padding: 17px 17px 15px;
}
.contrib-card p, .method-card p{ text-align: left; margin-bottom: 0; color: var(--muted); }

.subsection-title{
  margin-top: 24px;
  text-align: center;
  font-family: "Source Serif 4", Georgia, serif;
  font-size: 1.35rem;
}

.img-figure{
  margin: 18px auto 0;
  padding: 12px;
  border-radius: 16px;
  background: var(--soft);
  border: 1px solid var(--border-soft);
  max-width: 980px;
}
.img-figure-clean{ background: #fff; }
.img-figure img{ display: block; width: 100%; height: auto; border-radius: 10px; }

.caption{ color: var(--muted); text-align: center; font-size: 0.96rem; max-width: 850px; margin: 10px auto 0; }

.takeaway{
  background: var(--accent-soft);
  border: 1px solid rgba(34, 75, 141, 0.16);
  border-radius: 16px;
  padding: 16px 18px;
  margin: 18px 0;
  color: var(--text);
}

.notation-grid{
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px 14px;
  margin: 16px 0 0;
  background: var(--soft);
  border: 1px solid var(--border-soft);
  border-radius: 16px;
  padding: 16px 18px;
  color: var(--muted);
}

.image-placeholder{
  margin: 16px 0;
  padding: 16px 18px;
  border: 1px dashed rgba(34, 75, 141, 0.35);
  border-radius: 16px;
  background: rgba(34, 75, 141, 0.04);
}
.image-placeholder p{ text-align: left; }

.details-grid{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 16px;
}
details{ background: var(--soft); border: 1px solid var(--border-soft); border-radius: 16px; padding: 15px 16px; }
summary{ cursor: pointer; font-weight: 800; color: var(--accent); }
pre{ margin: 12px 0 0; background: #ffffff; border: 1px solid var(--border-soft); border-radius: 12px; padding: 13px 14px; overflow-x: auto; }
code{ font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace; font-size: 0.9rem; line-height: 1.48; }

.takeaway-list{ margin: 0; padding-left: 1.2rem; }
.takeaway-list li{ margin-bottom: 8px; }

.bubble-footer{ padding: 16px 24px; }
.footer-row{ display: flex; justify-content: space-between; align-items: center; gap: 10px; font-size: 0.95rem; }
.muted{ color: var(--muted); }

@media (max-width: 980px){
  .contrib-grid, .method-grid, .three-card-grid{ grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px){
  h1{ white-space: normal; font-size: clamp(25px, 5.2vw, 40px); }
  .details-grid{ grid-template-columns: 1fr; }
}
@media (max-width: 720px){
  .bubble{ padding: 22px 22px; }
  .page{ width: min(100% - 22px, 1080px); margin-top: 14px; gap: 14px; }
  .hero{ padding-left: 4px; padding-right: 4px; }
  .author-line{ gap: 8px 16px; font-size: clamp(17px, 4.5vw, 22px); }
  .affiliation-block{ font-size: clamp(15px, 4vw, 20px); }
  .tagline{ font-size: clamp(16px, 4.2vw, 20px); }
  .hero-links{ gap: 12px; font-size: clamp(17px, 4vw, 22px); }
  .notation-grid{ grid-template-columns: 1fr; }
}
@media (max-width: 620px){
  .contrib-grid, .method-grid, .three-card-grid{ grid-template-columns: 1fr; }
}
@media (max-width: 600px){ .footer-row{ flex-direction: column; } }

/* Wide paper table screenshots */
.wide-figure{
  max-width: 100%;
  overflow-x: auto;
}

.wide-figure img{
  min-width: 980px;
}

@media (max-width: 720px){
  .wide-figure img{
    min-width: 860px;
  }
}

.rank-green{
  color: #008000;
  font-weight: 700;
}

.rank-red{
  color: #d62728;
  font-weight: 700;
}

.rank-blue{
  color: #1f4ed8;
  font-weight: 700;
}

.red-down{
  color: #d62728;
  font-weight: 800;
  font-size: 1.05em;
}

.math{
  font-family: "Source Serif 4", Georgia, serif;
  font-style: italic;
}

.one-line-title{
  white-space: nowrap;
  font-size: clamp(20px, 2.45vw, 34px);
}

@media (max-width: 900px){
  .one-line-title{
    white-space: normal;
    font-size: clamp(24px, 5vw, 36px);
  }
}

.red-tagline{
  color: #d62728;
}