:root {
  --ink: #1a1a1a;
  --paper: #fdfdfc;
  --muted: #555;
  --rule: #e5e3de;
  --code-bg: #f5f4f0;

  /* Accent palette — swap --link to change identity color. */
  --accent-royal: #1e3a8a;    /* deep royal blue (current) */
  --accent-yonsei: #003876;   /* Yonsei navy */
  --accent-pure-royal: #4169E1; /* web royalblue */
  --accent-oxblood: #7a1f1f;  /* original */
  --link: var(--accent-oxblood);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Crimson Pro", Georgia, "Times New Roman", serif;
  font-size: 19px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  /* oldstyle figures in body — proportional, characterful */
  font-feature-settings: "onum", "kern", "liga";
  /* very subtle paper grain */
  background-image:
    radial-gradient(rgba(26, 26, 26, 0.018) 1px, transparent 1px),
    radial-gradient(rgba(26, 26, 26, 0.012) 1px, transparent 1px);
  background-size: 3px 3px, 7px 7px;
  background-position: 0 0, 1px 2px;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

main.page {
  max-width: 740px;
  margin: 0 auto;
  padding: 4rem 1.25rem 6rem;
}

h1 {
  font-size: 1.9rem;
  font-weight: 600;
  line-height: 1.25;
  margin: 0 0 0.6rem;
}

h2 {
  font-size: 1.22rem;
  font-weight: 600;
  margin: 2.6rem 0 0.7rem;
  letter-spacing: -0.01em;
}
/* small ornament — a thin oxblood tick before each section header */
section > h2::before {
  content: "";
  display: inline-block;
  width: 0.7em;
  height: 1px;
  background: var(--link);
  vertical-align: 0.32em;
  margin-right: 0.55em;
  opacity: 0.85;
}

p {
  margin: 0 0 1rem;
}

a {
  color: var(--link);
  text-decoration: none;
  border-bottom: 1px solid color-mix(in srgb, var(--link) 30%, transparent);
}

a:hover {
  border-bottom-color: var(--link);
}

.title-block {
  margin-bottom: 2.5rem;
}

.title-block .venue {
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 0.8rem;
}

.title-block .authors {
  font-size: 1.18rem;
  color: #333;
  margin: 0.5rem 0 0.25rem;
  line-height: 1.55;
}

.title-block .authors a {
  border-bottom: none;
}
.title-block .authors a:hover {
  border-bottom: 1px solid var(--link);
}

.title-block .authors sup,
.title-block .affiliations sup,
.title-block .note sup {
  font-size: 0.7em;
}

.title-block .affiliations {
  font-size: 1.05rem;
  font-style: italic;
  color: var(--muted);
  margin: 0.3rem 0 0.2rem;
}

.title-block .note {
  font-size: 0.92rem;
  color: var(--muted);
  margin: 0 0 1rem;
}

.title-block .links {
  font-size: 1.08rem;
  margin: 0;
}

/* gist — single sentence, set apart */
.gist {
  font-size: 1.15rem;
  line-height: 1.55;
  color: #2a2a2a;
  border-left: 2px solid var(--link);
  padding: 0.1rem 0 0.1rem 1rem;
  margin: 1.5rem 0 2rem;
}

/* breakout figures — wider than text column on large screens */
figure.wide,
figure.medium {
  width: calc(100vw - 2.5rem);
  margin-left: 50%;
  transform: translateX(-50%);
}
figure.wide { max-width: 920px; }
figure.medium { max-width: 780px; }
figure.wide img,
figure.medium img {
  margin: 0 auto;
}
figure.wide figcaption,
figure.medium figcaption {
  max-width: 740px;
  margin-left: auto;
  margin-right: auto;
}
@media (max-width: 920px) {
  figure.wide {
    width: 100%;
    margin-left: 0;
    transform: none;
  }
}
@media (max-width: 780px) {
  figure.medium {
    width: 100%;
    margin-left: 0;
    transform: none;
  }
}

/* stats strip */
.stats {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 2rem;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding: 1rem 0;
}
.stats li {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.stats .num {
  font-size: 1.55rem;
  font-weight: 600;
  color: var(--ink);
  /* lining + tabular for stat-strip numbers */
  font-feature-settings: "lnum", "tnum";
  letter-spacing: -0.005em;
}
.stats .lbl {
  font-size: 0.86rem;
  color: var(--muted);
  font-style: italic;
  margin-top: 0.2rem;
  line-height: 1.4;
}
@media (max-width: 640px) {
  .stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }
}

/* comparison table — breaks out of the text column on wide screens */
.table-wrap {
  max-width: 860px;
  width: calc(100vw - 2.5rem);
  margin-left: 50%;
  transform: translateX(-50%);
  margin-top: 1rem;
  margin-bottom: 2.4rem;
}
@media (max-width: 860px) {
  .table-wrap {
    width: 100%;
    margin-left: 0;
    transform: none;
  }
}
table.comparison {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
  font-feature-settings: "lnum", "tnum";
}
table.comparison th,
table.comparison td {
  text-align: left;
  padding: 0.7rem 0.7rem;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
  line-height: 1.45;
}
table.comparison th {
  font-weight: 600;
  border-bottom: 1px solid var(--ink);
  color: var(--ink);
  font-size: 0.92rem;
  letter-spacing: 0.005em;
  padding-bottom: 0.55rem;
}
table.comparison tr.ours {
  background: color-mix(in srgb, var(--link) 6%, transparent);
}
table.comparison tr.ours td {
  border-bottom-color: color-mix(in srgb, var(--link) 35%, var(--rule));
}

/* card layout below tablet — each row becomes a stacked block */
@media (max-width: 640px) {
  table.comparison,
  table.comparison thead,
  table.comparison tbody,
  table.comparison tr,
  table.comparison th,
  table.comparison td {
    display: block;
  }
  table.comparison thead {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
  }
  table.comparison tr {
    border: 1px solid var(--rule);
    border-radius: 3px;
    padding: 0.55rem 0.85rem 0.7rem;
    margin-bottom: 0.7rem;
    background: var(--paper);
  }
  table.comparison tr.ours {
    border-color: color-mix(in srgb, var(--link) 50%, var(--rule));
    background: color-mix(in srgb, var(--link) 6%, transparent);
  }
  table.comparison td {
    padding: 0.18rem 0;
    border: 0;
    font-size: 0.88rem;
    display: flex;
    gap: 0.7em;
  }
  table.comparison td::before {
    content: attr(data-label);
    flex: 0 0 7em;
    color: var(--muted);
    font-style: italic;
    font-size: 0.78rem;
    line-height: 1.6;
  }
  /* the dataset name gets its own emphasis as the card header */
  table.comparison td:first-child {
    font-weight: 600;
    font-size: 1rem;
    border-bottom: 1px solid var(--rule);
    padding-bottom: 0.4rem;
    margin-bottom: 0.4rem;
    display: block;
  }
  table.comparison td:first-child::before {
    display: none;
  }
  table.comparison tr.ours td:first-child {
    border-bottom-color: color-mix(in srgb, var(--link) 35%, var(--rule));
  }
}

/* standards callout — echoes paper's tcolorbox */
.standards-box {
  border: 1px solid color-mix(in srgb, var(--link) 35%, var(--rule));
  background: color-mix(in srgb, var(--link) 4%, var(--paper));
  padding: 0.9rem 1.1rem 0.6rem;
  border-radius: 3px;
  margin: 1rem 0 1.5rem;
}
.standards-box p {
  margin: 0 0 0.4rem;
  font-size: 0.95rem;
}
.standards-box .s {
  display: inline-block;
  font-weight: 600;
  color: var(--link);
  min-width: 1.7em;
}

/* findings callout */
.findings-box {
  margin: 1rem 0 1.2rem;
}
.findings-box p {
  margin: 0 0 0.7rem;
}
.takeaway {
  font-size: 1.05rem;
  font-style: italic;
  color: var(--ink);
  border-top: 1px solid var(--rule);
  padding-top: 0.9rem;
  margin-top: 1.2rem;
}

figure {
  margin: 2rem 0;
}

figcaption {
  font-size: 0.95rem;
  line-height: 1.55;
  font-style: italic;
  color: var(--muted);
  margin-top: 0.7rem;
  text-align: left;
}

pre {
  font-family: "SFMono-Regular", ui-monospace, Menlo, Consolas, monospace;
  font-size: 0.8rem;
  line-height: 1.5;
  background: var(--code-bg);
  color: var(--ink);
  padding: 1rem 1.1rem;
  border-radius: 2px;
  overflow-x: auto;
  white-space: pre;
  margin: 0.6rem 0 0;
}

footer {
  margin-top: 4rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--rule);
  font-size: 0.8rem;
  color: #777;
}

footer p {
  margin: 0;
}

@media (max-width: 640px) {
  body {
    font-size: 17px;
  }
  main.page {
    padding: 2.5rem 1.1rem 4rem;
  }
  h1 {
    font-size: 1.5rem;
  }
  /* on mobile, let the title wrap naturally */
  .title-br { display: none; }
  h2 {
    font-size: 1.1rem;
    margin-top: 2.2rem;
  }
  .gist {
    font-size: 1.05rem;
    padding-left: 0.85rem;
  }
  .title-block .authors {
    font-size: 1.05rem;
  }
  .title-block .affiliations {
    font-size: 0.96rem;
  }
  .title-block .links {
    font-size: 1rem;
  }
  .standards-box {
    padding: 0.75rem 0.9rem 0.5rem;
  }
  .standards-box p {
    font-size: 0.92rem;
  }
  .findings-box p {
    font-size: 0.95rem;
  }
  .takeaway {
    font-size: 1rem;
  }
  pre {
    font-size: 0.72rem;
  }
}