/* D2R2 project page. Colors follow the paper figures:
   MDDM = blue, biological prior = orange, GRPO/RPM = purple. */

:root {
  --bg: #fcfcfb;
  --card: #ffffff;
  --ink: #1b1d21;
  --ink-2: #4b5058;
  --ink-3: #737983;
  --line: #e4e5e2;
  --line-strong: #cfd2cf;
  --code-bg: #f4f4f1;

  --blue: #2f5d8a;
  --blue-soft: #eaf1f8;
  --orange: #e8791a;
  --orange-ink: #a9520a;
  --orange-soft: #fdf0e3;
  --purple: #8a5bb3;
  --purple-ink: #74479c;
  --purple-soft: #f3edf9;
  --gray-mark: #9aa1ab;

  --mask: #eef0f1;
  --mask-hatch: #dcdfe2;
  --bin-0: #8fb6df;
  --bin-1: #6496cb;
  --bin-2: #3f74ad;
  --bin-3: #2b5689;
  --bin-4: #1c3a5f;

  --btn-bg: #1b1d21;
  --btn-ink: #ffffff;
  --figure-bg: #ffffff;

  --radius: 10px;
  --shadow: 0 1px 2px rgba(20, 22, 26, 0.04), 0 4px 16px rgba(20, 22, 26, 0.04);
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial,
    "PingFang SC", "Noto Sans", sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #16181d;
    --card: #1d2026;
    --ink: #e9eaec;
    --ink-2: #b4b9c1;
    --ink-3: #8a9099;
    --line: #2c3038;
    --line-strong: #3a3f48;
    --code-bg: #1f2228;

    --blue: #6c9bd0;
    --blue-soft: #1d2a3a;
    --orange: #d6762a;
    --orange-ink: #f0a160;
    --orange-soft: #3a2a1c;
    --purple: #9670c2;
    --purple-ink: #c2a5e3;
    --purple-soft: #2c2438;
    --gray-mark: #6f7680;

    --mask: #252931;
    --mask-hatch: #30353e;
    --bin-0: #284f7a;
    --bin-1: #3b6fa6;
    --bin-2: #5f92c9;
    --bin-3: #8eb5df;
    --bin-4: #c3d8ef;

    --btn-bg: #e9eaec;
    --btn-ink: #16181d;
    --figure-bg: #f4f4f2;
    --shadow: none;
  }
}

:root[data-theme="dark"] {
  --bg: #16181d;
  --card: #1d2026;
  --ink: #e9eaec;
  --ink-2: #b4b9c1;
  --ink-3: #8a9099;
  --line: #2c3038;
  --line-strong: #3a3f48;
  --code-bg: #1f2228;

  --blue: #6c9bd0;
  --blue-soft: #1d2a3a;
  --orange: #d6762a;
  --orange-ink: #f0a160;
  --orange-soft: #3a2a1c;
  --purple: #9670c2;
  --purple-ink: #c2a5e3;
  --purple-soft: #2c2438;
  --gray-mark: #6f7680;

  --mask: #252931;
  --mask-hatch: #30353e;
  --bin-0: #284f7a;
  --bin-1: #3b6fa6;
  --bin-2: #5f92c9;
  --bin-3: #8eb5df;
  --bin-4: #c3d8ef;

  --btn-bg: #e9eaec;
  --btn-ink: #16181d;
  --figure-bg: #f4f4f2;
  --shadow: none;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-underline-offset: 3px; }
a:hover { color: var(--orange-ink); }

.wrap {
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

.d2r2, .nw { white-space: nowrap; }
.d2r2 sup { font-size: 0.6em; line-height: 0; }

/* ---------- Header ---------- */

.hero {
  text-align: center;
  padding-top: 64px;
  padding-bottom: 8px;
}

.hero h1 {
  margin: 0;
  font-size: 56px;
  line-height: 1.1;
  font-weight: 750;
  letter-spacing: -0.02em;
}

.hero .subtitle {
  margin: 14px auto 0;
  max-width: 760px;
  font-size: 24px;
  line-height: 1.35;
  font-weight: 500;
  color: var(--ink);
  text-wrap: balance;
}

.authors {
  margin: 28px auto 0;
  max-width: 820px;
  font-size: 16.5px;
  line-height: 1.8;
  color: var(--ink);
}
.authors span { white-space: nowrap; margin: 0 7px; }
.authors sup, .affils sup { color: var(--ink-3); font-size: 0.7em; margin-left: 1px; }

.affils {
  margin: 6px 0 0;
  font-size: 15.5px;
  color: var(--ink-2);
}
.affils span { margin: 0 10px; white-space: nowrap; }

.notes {
  margin: 4px 0 0;
  font-size: 13.5px;
  color: var(--ink-3);
}

.links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: 26px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: 999px;
  background: var(--btn-bg);
  color: var(--btn-ink);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  line-height: 1.2;
  border: 1px solid var(--btn-bg);
  transition: transform 0.15s ease, opacity 0.15s ease;
}
.btn:hover { color: var(--btn-ink); transform: translateY(-1px); opacity: 0.92; }
.btn svg { width: 16px; height: 16px; flex: none; }
.btn.is-disabled {
  background: transparent;
  color: var(--ink-3);
  border-color: var(--line-strong);
  cursor: default;
}
.btn.is-disabled:hover { transform: none; opacity: 1; color: var(--ink-3); }
.btn .soon { font-weight: 500; font-size: 13px; }

.tldr {
  max-width: 760px;
  margin: 32px auto 0;
  font-size: 19px;
  line-height: 1.55;
  color: var(--ink-2);
  text-align: center;
  text-wrap: balance;
}
.tldr strong { color: var(--ink); font-weight: 650; }

/* ---------- Sections ---------- */

section { padding-top: 44px; padding-bottom: 44px; }

h2 {
  font-size: 30px;
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 8px;
}

h3 {
  font-size: 20px;
  line-height: 1.35;
  font-weight: 650;
  margin: 44px 0 6px;
}

.lead {
  margin: 0 0 22px;
  color: var(--ink-2);
  max-width: 820px;
}

.section-rule {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 0;
}

.figure {
  margin: 24px 0 0;
  background: var(--figure-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
}
.figure img { display: block; width: 100%; height: auto; }
.figure figcaption {
  margin-top: 12px;
  font-size: 14.5px;
  line-height: 1.55;
  color: #4b5058;
}
.figure figcaption b { color: #1b1d21; }

/* ---------- Framework cards ---------- */

.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 20px;
}

.pillar {
  background: var(--card);
  border: 1px solid var(--line);
  border-top: 3px solid var(--accent, var(--blue));
  border-radius: var(--radius);
  padding: 18px 18px 16px;
  box-shadow: var(--shadow);
}
.pillar.mddm { --accent: var(--blue); --accent-soft: var(--blue-soft); }
.pillar.rpm { --accent: var(--orange); --accent-soft: var(--orange-soft); }

.pillars.two { grid-template-columns: repeat(2, 1fr); margin-top: 10px; }

.pillar[role="button"] {
  cursor: pointer;
  transition: opacity 0.3s ease, background-color 0.3s ease, border-color 0.3s ease, transform 0.15s ease;
}
.pillar[role="button"]:hover { border-color: var(--line-strong); border-top-color: var(--accent); }
.pillar[role="button"]:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.pillar[aria-pressed="true"] {
  background: var(--accent-soft);
  border-color: var(--accent);
}
.pillar.is-dimmed { opacity: 0.55; }

.stages { list-style: none; margin: 10px 0 0; padding: 0; }
.stages li {
  display: flex;
  gap: 10px;
  margin-top: 8px;
  font-size: 15px;
  line-height: 1.55;
  color: var(--ink-2);
}
.stages b { color: var(--ink); font-weight: 650; }
.stages .dot { flex: none; width: 8px; height: 8px; border-radius: 50%; margin-top: 8px; }
.stages .dot.prior { background: var(--orange); }
.stages .dot.grpo { background: var(--purple); }

.fw-hint { margin: 18px 0 0; font-size: 14px; color: var(--ink-3); }

.fw-svg svg, .fw-svg img { display: block; width: 100%; height: auto; }
.fw-svg .r-gen, .fw-svg .r-rpm, .fw-svg .r-io { transition: opacity 0.35s ease; }
.fw-svg[data-focus="gen"] .r-rpm,
.fw-svg[data-focus="gen"] .r-io,
.fw-svg[data-focus="rpm"] .r-gen,
.fw-svg[data-focus="rpm"] .r-io { opacity: 0.14; }

.pillar .tag {
  display: inline-block;
  font-size: 12.5px;
  font-weight: 650;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.pillar h4 {
  margin: 4px 0 8px;
  font-size: 17.5px;
  line-height: 1.35;
  font-weight: 650;
}
.pillar p { margin: 0; font-size: 15.5px; line-height: 1.6; color: var(--ink-2); }

details.more {
  margin-top: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
}
details.more > summary {
  cursor: pointer;
  padding: 14px 18px;
  font-weight: 600;
  font-size: 15.5px;
  color: var(--ink);
  list-style: none;
  display: flex;
  align-items: center;
  gap: 10px;
}
details.more > summary::-webkit-details-marker { display: none; }
details.more > summary::before {
  content: "";
  width: 7px;
  height: 7px;
  border-right: 2px solid var(--ink-3);
  border-bottom: 2px solid var(--ink-3);
  transform: rotate(-45deg);
  transition: transform 0.2s ease;
  flex: none;
}
details.more[open] > summary::before { transform: rotate(45deg); }
details.more > summary .hint { color: var(--ink-3); font-weight: 400; }
details.more .more-body { padding: 0 18px 18px; }
details.more .figure { margin-top: 0; }

/* ---------- Inference demo ---------- */

.demo {
  margin: 0 auto;
  max-width: 920px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: var(--shadow);
  padding: 20px 24px 18px;
}

.demo-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.demo-title { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; font-size: 15px; color: var(--ink-2); }
.demo-title b { color: var(--ink); font-weight: 650; }

.chip {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
  background: var(--mask);
  color: var(--ink-2);
}

.demo-ctrl { display: flex; align-items: center; gap: 6px; }
.demo-step {
  font-size: 14px;
  color: var(--ink-2);
  font-variant-numeric: tabular-nums;
  margin-right: 6px;
  min-width: 92px;
  text-align: right;
}
.demo-step b { color: var(--ink); }

.icon-btn {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--ink);
  display: inline-grid;
  place-items: center;
  cursor: pointer;
  padding: 0;
}
.icon-btn:hover { border-color: var(--line-strong); background: var(--mask); }
.icon-btn:focus-visible { outline: 2px solid var(--orange); outline-offset: 2px; }
.icon-btn svg { width: 16px; height: 16px; }
.icon-btn svg[hidden] { display: none; }

.demo-grid {
  --n: 16;
  display: grid;
  grid-template-columns: 118px repeat(var(--n), minmax(0, 1fr));
  column-gap: 6px;
  margin-top: 18px;
  align-items: end;
}

.row-label {
  font-size: 13px;
  line-height: 1.3;
  color: var(--ink-3);
  padding-right: 8px;
  align-self: center;
}
.row-label i { font-family: Georgia, "Times New Roman", serif; }

.col-bar {
  height: 84px;
  position: relative;
  border-radius: 6px 6px 0 0;
  transition: background-color 0.3s ease;
}
.col-bar.is-picked { background: var(--orange-soft); }

.col-bar .bar {
  position: absolute;
  left: 50%;
  bottom: 0;
  width: min(18px, 64%);
  transform: translateX(-50%);
  height: 0;
  border-radius: 4px 4px 0 0;
  background: var(--gray-mark);
  transition: height 0.5s cubic-bezier(0.3, 0.7, 0.3, 1), background-color 0.3s ease;
}
.col-bar.is-picked .bar { background: var(--orange); }

.baseline {
  grid-column: 2 / -1;
  height: 1px;
  background: var(--line-strong);
}
.baseline-spacer { height: 1px; }

.token {
  margin-top: 8px;
  aspect-ratio: 1 / 1;
  border-radius: 5px;
  background-color: var(--mask);
  background-image: repeating-linear-gradient(45deg, transparent 0 4px, var(--mask-hatch) 4px 5.5px);
  transition: background-color 0.35s ease, box-shadow 0.35s ease, transform 0.35s ease;
}
.token.is-filled { background-image: none; }
.token.is-new {
  box-shadow: 0 0 0 2px var(--card), 0 0 0 4px var(--orange);
  animation: pop 0.45s ease;
}
.token[data-bin="0"] { background-color: var(--bin-0); }
.token[data-bin="1"] { background-color: var(--bin-1); }
.token[data-bin="2"] { background-color: var(--bin-2); }
.token[data-bin="3"] { background-color: var(--bin-3); }
.token[data-bin="4"] { background-color: var(--bin-4); }

@keyframes pop {
  0% { transform: scale(0.82); }
  60% { transform: scale(1.08); }
  100% { transform: scale(1); }
}

.gene {
  margin-top: 6px;
  text-align: center;
  font-size: 13px;
  line-height: 1.2;
  font-weight: 600;
  color: var(--ink-2);
  position: relative;
  padding-bottom: 10px;
}
.gene.is-reg::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 6px;
  height: 6px;
  margin-left: -3px;
  border-radius: 50%;
  background: var(--orange);
}

.demo-progress {
  margin-top: 14px;
  height: 4px;
  border-radius: 2px;
  background: var(--mask);
  overflow: hidden;
}
.demo-progress > div {
  height: 100%;
  width: 0;
  background: var(--blue);
  border-radius: 2px;
  transition: width 0.45s ease;
}

.demo-caption {
  margin: 12px 0 0;
  min-height: 3.3em;
  font-size: 15.5px;
  line-height: 1.6;
  color: var(--ink);
}
.demo-caption .k { color: var(--ink-3); font-variant-numeric: tabular-nums; margin-right: 6px; }

.demo-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin-top: 10px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--ink-2);
}
.demo-legend .item { display: inline-flex; align-items: center; gap: 7px; }
.sw { display: inline-block; width: 14px; height: 14px; border-radius: 3px; }
.sw.mask {
  background-color: var(--mask);
  background-image: repeating-linear-gradient(45deg, transparent 0 3px, var(--mask-hatch) 3px 4.5px);
}
.sw.bar { width: 8px; height: 14px; border-radius: 2px 2px 0 0; background: var(--orange); }
.sw.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--orange); }
.ramp { display: inline-flex; gap: 2px; }
.ramp .sw { width: 12px; border-radius: 2px; }

.demo-note {
  margin: 10px auto 0;
  max-width: 920px;
  font-size: 13px;
  color: var(--ink-3);
  text-align: center;
}

/* ---------- Results ---------- */

.tabs {
  display: inline-flex;
  padding: 3px;
  border-radius: 10px;
  background: var(--mask);
  gap: 2px;
  margin: 6px 0 14px;
  flex-wrap: wrap;
}
.tab {
  border: 0;
  background: transparent;
  color: var(--ink-2);
  font: inherit;
  font-size: 14.5px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 8px;
  cursor: pointer;
}
.tab[aria-selected="true"] { background: var(--card); color: var(--ink); box-shadow: 0 1px 2px rgba(0, 0, 0, 0.08); }
.tab:focus-visible { outline: 2px solid var(--orange); outline-offset: 1px; }

.table-scroll {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
}

table.results {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
  font-variant-numeric: tabular-nums;
  min-width: 680px;
}
table.results th,
table.results td {
  padding: 10px 14px;
  text-align: right;
  white-space: nowrap;
  border-bottom: 1px solid var(--line);
}
table.results th:first-child,
table.results td:first-child { text-align: left; }
table.results thead th {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink-2);
  background: var(--card);
}
table.results thead tr.group th {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-3);
  padding-bottom: 2px;
  border-bottom: 0;
}
table.results thead tr.group th span {
  display: block;
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 4px;
  text-align: center;
}
table.results tbody tr:last-child td { border-bottom: 0; }
table.results .venue { color: var(--ink-3); font-size: 12.5px; margin-left: 6px; }
table.results .pm { color: var(--ink-3); font-size: 12.5px; margin-left: 2px; }
table.results .best { font-weight: 700; }
table.results .second { text-decoration: underline; text-underline-offset: 3px; }
table.results tr.ours td { background: var(--orange-soft); }
table.results tr.ours td:first-child { font-weight: 700; }

.table-note { margin: 10px 0 0; font-size: 13.5px; color: var(--ink-3); }

.chart-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px 12px;
  position: relative;
}
.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  font-size: 13px;
  color: var(--ink-2);
  margin-bottom: 4px;
}
.chart-legend .item { display: inline-flex; align-items: center; gap: 7px; }
.chart-legend .sw { width: 12px; height: 12px; }
#ablation-chart svg { display: block; width: 100%; height: auto; overflow: visible; }
#ablation-chart text { font-family: var(--sans); }
.chart-sub { margin: 8px 0 0; font-size: 13.5px; color: var(--ink-3); }

.tooltip {
  position: absolute;
  pointer-events: none;
  background: var(--ink);
  color: var(--bg);
  font-size: 13px;
  line-height: 1.45;
  padding: 7px 10px;
  border-radius: 7px;
  white-space: nowrap;
  opacity: 0;
  transform: translate(-50%, calc(-100% - 10px));
  transition: opacity 0.12s ease;
  z-index: 2;
}
.tooltip.is-on { opacity: 1; }

details.table-view { margin-top: 10px; }
details.table-view > summary {
  cursor: pointer;
  font-size: 13.5px;
  color: var(--ink-2);
}
details.table-view .table-scroll { margin-top: 10px; }
table.results.compact { font-size: 14px; min-width: 640px; }
table.results.compact th, table.results.compact td { padding: 7px 12px; }
table.results .gain { color: var(--ink-3); font-size: 12.5px; margin-left: 4px; }

/* ---------- BibTeX ---------- */

.bib {
  position: relative;
  margin-top: 14px;
}
.bib pre {
  margin: 0;
  background: var(--code-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
  font-family: var(--mono);
  font-size: 13.5px;
  line-height: 1.6;
  overflow-x: auto;
  color: var(--ink);
}
.copy-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  padding: 5px 11px;
  border-radius: 7px;
  border: 1px solid var(--line-strong);
  background: var(--card);
  color: var(--ink-2);
  cursor: pointer;
}
.copy-btn:hover { color: var(--ink); }

footer {
  padding: 32px 0 56px;
  font-size: 13.5px;
  color: var(--ink-3);
  text-align: center;
}

/* ---------- Small screens ---------- */

@media (max-width: 760px) {
  body { font-size: 16px; }
  .wrap { padding-left: 16px; padding-right: 16px; }
  .hero { padding-top: 44px; }
  .hero h1 { font-size: 42px; }
  .hero .subtitle { font-size: 19px; }
  .authors { font-size: 15px; }
  .authors span { margin: 0 5px; }
  .tldr { font-size: 17px; margin-top: 30px; }
  h2 { font-size: 25px; }
  h3 { font-size: 18px; margin-top: 36px; }
  section { padding-top: 32px; padding-bottom: 32px; }
  .pillars, .pillars.two { grid-template-columns: 1fr; gap: 12px; }
  .figure { padding: 12px; }

  .demo { padding: 16px 14px 14px; border-radius: 12px; }
  .demo-grid { grid-template-columns: repeat(var(--n), minmax(0, 1fr)); column-gap: 3px; }
  .demo-grid .row-label, .demo-grid .baseline-spacer { display: none; }
  .baseline { grid-column: 1 / -1; }
  .col-bar { height: 64px; }
  .token { border-radius: 3px; margin-top: 6px; }
  .token.is-new { box-shadow: 0 0 0 1.5px var(--card), 0 0 0 3px var(--orange); }
  .gene { font-size: 11px; }
  .demo-step { min-width: 0; }
  .demo-caption { font-size: 14.5px; min-height: 4.8em; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
  html { scroll-behavior: auto; }
}

#inference { padding-top: 36px; }
.figure img.narrow { max-width: 720px; margin: 0 auto; }