/* Self-Critical Inference project page
   Direction: an annotated manuscript. Warm paper, ink, and one red pen. */

:root {
  color-scheme: light;
  --paper: #fbf8f1;
  --paper-2: #f3eee2;
  --ink: #16130f;
  --ink-2: #5a544a;
  --ink-3: #8a8375;
  --rule: #d9d2c3;
  --pen: #c8341f;
  --pen-soft: rgba(200, 52, 31, 0.1);
  --s1: #2a78d6;
  --s2: #eb6834;
  --s3: #1baf7a;
  --display: "Instrument Serif", "Songti SC", "Noto Serif SC", Georgia, serif;
  --body: "Schibsted Grotesk", "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;
  --mono: "IBM Plex Mono", "SFMono-Regular", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --paper: #15130f;
    --paper-2: #1e1b16;
    --ink: #f3eee3;
    --ink-2: #b5ad9d;
    --ink-3: #857e70;
    --rule: #38332a;
    --pen: #ff6b4f;
    --pen-soft: rgba(255, 107, 79, 0.12);
    --s1: #3987e5;
    --s2: #d95926;
    --s3: #199e70;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.65;
  background-image: radial-gradient(var(--rule) 0.6px, transparent 0.6px);
  background-size: 22px 22px;
  background-attachment: fixed;
}
::selection { background: var(--pen); color: var(--paper); }
a { color: inherit; text-decoration-color: var(--pen); text-decoration-thickness: 1.5px; text-underline-offset: 3px; }
a:hover { color: var(--pen); }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 28px; }

/* ---------- nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--rule);
}
.nav .wrap { display: flex; align-items: center; gap: 22px; height: 52px; overflow-x: auto; white-space: nowrap; }
.nav .mark { font-family: var(--display); font-size: 24px; text-decoration: none; letter-spacing: 0.01em; }
.nav .mark i { color: var(--pen); }
.nav a.item { font-family: var(--mono); font-size: 12px; text-transform: uppercase; letter-spacing: 0.08em; text-decoration: none; color: var(--ink-2); }
.nav a.item:hover { color: var(--pen); }
.nav .sp { flex: 1; }

/* ---------- hero ---------- */
.hero { padding-top: 84px; padding-bottom: 56px; }
.venue {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--mono); font-size: 12.5px; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--pen); border: 1.5px solid var(--pen); padding: 5px 12px; border-radius: 2px;
  transform: rotate(-1.2deg);
}
h1 {
  font-family: var(--display); font-weight: 400;
  font-size: clamp(40px, 6.3vw, 78px); line-height: 1.02; letter-spacing: -0.012em;
  margin: 26px 0 0; max-width: 21ch;
}
h1 em { font-style: italic; color: var(--pen); }
h1 .struck { position: relative; white-space: nowrap; }
h1 .under { background: linear-gradient(transparent 82%, var(--pen-soft) 0); }
.authors { margin: 34px 0 0; font-size: 18px; max-width: 760px; }
.authors span { white-space: nowrap; }
.authors sup { font-family: var(--mono); font-size: 10.5px; color: var(--pen); margin-left: 1px; }
.affil { margin: 10px 0 0; font-size: 14px; color: var(--ink-2); max-width: 760px; }
.affil sup { font-family: var(--mono); font-size: 10px; color: var(--pen); margin-right: 2px; }
.cta { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 34px; }
.btn {
  font-family: var(--mono); font-size: 13px; letter-spacing: 0.04em; text-decoration: none;
  padding: 11px 18px; border: 1.5px solid var(--ink); border-radius: 2px; background: var(--paper);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.btn:hover { color: var(--ink); transform: translate(-2px, -2px); box-shadow: 4px 4px 0 var(--pen); }
.btn.primary { background: var(--ink); color: var(--paper); }
.btn.primary:hover { color: var(--paper); }

.lede { display: grid; grid-template-columns: 1fr 1fr; gap: 0; margin-top: 64px; border: 1.5px solid var(--ink); background: var(--paper); }
.lede > div { padding: 26px 28px; }
.lede > div + div { border-left: 1.5px solid var(--ink); }
.lede h2 { font-family: var(--mono); font-size: 12px; font-weight: 500; text-transform: uppercase; letter-spacing: 0.1em; color: var(--pen); margin: 0 0 10px; }
.lede p { margin: 0; font-size: 16.5px; }

/* ---------- sections ---------- */
section { padding: 72px 0 8px; }
.sec-head { display: flex; align-items: baseline; gap: 18px; border-top: 1.5px solid var(--ink); padding-top: 14px; margin-bottom: 30px; }
.sec-head .no { font-family: var(--mono); font-size: 12.5px; color: var(--pen); letter-spacing: 0.08em; }
h2.title { font-family: var(--display); font-weight: 400; font-size: clamp(30px, 4vw, 46px); line-height: 1.08; margin: 0; }
h3 { font-family: var(--display); font-weight: 400; font-size: 27px; line-height: 1.2; margin: 44px 0 12px; }
h3 small { font-family: var(--mono); font-size: 12px; color: var(--ink-3); letter-spacing: 0.06em; margin-left: 8px; }
p { margin: 0 0 16px; }
.prose { max-width: 760px; }
.prose ul { padding-left: 20px; margin: 0 0 16px; }
.prose li { margin-bottom: 8px; }
.prose li::marker { color: var(--pen); }
.note { border-left: 3px solid var(--pen); background: var(--pen-soft); padding: 14px 18px; margin: 22px 0; font-size: 15.5px; max-width: 760px; }
.note b { font-weight: 600; }
code, .mono { font-family: var(--mono); font-size: 0.86em; }
code { background: var(--paper-2); padding: 1px 5px; border-radius: 2px; border: 1px solid var(--rule); }

.two { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.card { border: 1px solid var(--rule); background: var(--paper); padding: 22px 24px; }
.card h4 { font-family: var(--display); font-weight: 400; font-size: 24px; margin: 0 0 8px; }
.card h4 i { color: var(--pen); }
.card p { font-size: 15.5px; margin: 0; color: var(--ink-2); }
.card p + p { margin-top: 10px; }

/* ---------- equations ---------- */
.eq {
  font-family: var(--display); font-size: 23px; line-height: 1.5; text-align: center;
  padding: 20px 16px; margin: 20px 0; border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule);
  overflow-x: auto; white-space: nowrap; max-width: 760px; position: relative;
}
.eq i { font-style: italic; }
.eq .tc { color: var(--s1); }
.eq .vc { color: var(--s2); }
.eq .lbl { position: absolute; right: 4px; top: 6px; font-family: var(--mono); font-size: 11px; color: var(--ink-3); }
.eq sub, .eq sup { font-size: 0.62em; }

/* ---------- rounds diagram ---------- */
.rounds { display: grid; grid-template-columns: minmax(0, 1.25fr) 40px minmax(0, 1fr) 40px minmax(0, 0.9fr); align-items: stretch; margin: 30px 0 10px; }
.rounds .col { display: flex; flex-direction: column; gap: 10px; justify-content: center; }
.rounds .arrow { display: flex; align-items: center; justify-content: center; color: var(--ink-3); font-family: var(--mono); }
.pass { display: grid; grid-template-columns: 44px 1fr; gap: 12px; align-items: center; border: 1px solid var(--rule); background: var(--paper); padding: 9px 12px; font-size: 13.5px; line-height: 1.35; }
.pass b { font-family: var(--mono); font-size: 12px; font-weight: 500; display: block; letter-spacing: 0.03em; }
.pass span { color: var(--ink-2); }
.pass.orig { border-color: var(--ink); border-width: 1.5px; }
.pass.t { border-left: 3px solid var(--s1); }
.pass.v { border-left: 3px solid var(--s2); }
.thumb { width: 44px; height: 44px; border: 1px solid var(--rule); position: relative; overflow: hidden; }
.thumb.img { background: radial-gradient(circle at 30% 35%, #f2b84b 0 22%, transparent 23%), linear-gradient(160deg, #7fb3d9 0 55%, #5d9466 56%); }
.thumb.black { background: #000; }
.thumb.noise { background: #8d8d8d; }
.thumb.noise::after { content: ""; position: absolute; inset: 0; background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='60' height='60'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='1.4' numOctaves='2'/></filter><rect width='60' height='60' filter='url(%23n)'/></svg>"); mix-blend-mode: hard-light; opacity: 0.9; }
.thumb.noise.light::after { opacity: 0.55; }
.thumb.txt { display: flex; align-items: center; justify-content: center; font-family: var(--display); font-size: 22px; font-style: italic; background: var(--paper-2); }
.agg { border: 1.5px solid var(--ink); padding: 14px 16px; background: var(--paper); }
.agg b { font-family: var(--mono); font-size: 12px; font-weight: 500; letter-spacing: 0.05em; text-transform: uppercase; }
.agg.t b { color: var(--s1); } .agg.v b { color: var(--s2); }
.agg p { font-size: 14px; margin: 6px 0 0; color: var(--ink-2); }
.agg .f { font-family: var(--display); font-size: 19px; color: var(--ink); display: block; margin-top: 4px; }
.out { border: 1.5px solid var(--pen); background: var(--pen-soft); padding: 16px; }
.out b { font-family: var(--mono); font-size: 12px; font-weight: 500; letter-spacing: 0.05em; text-transform: uppercase; color: var(--pen); }
.out .f { font-family: var(--display); font-size: 20px; display: block; margin: 6px 0; }
.out p { font-size: 13.5px; margin: 0; color: var(--ink-2); }
.cap { font-size: 13.5px; color: var(--ink-3); max-width: 760px; margin-top: 10px; }

/* ---------- tables ---------- */
.tbl { overflow-x: auto; margin: 18px 0 8px; border: 1px solid var(--rule); background: var(--paper); }
table { border-collapse: collapse; width: 100%; font-size: 14px; }
caption { caption-side: top; text-align: left; padding: 12px 14px; font-size: 13.5px; color: var(--ink-2); border-bottom: 1px solid var(--rule); }
caption b { color: var(--ink); font-weight: 600; }
th, td { padding: 7px 12px; text-align: right; white-space: nowrap; border-bottom: 1px solid var(--rule); }
th:first-child, td:first-child { text-align: left; }
thead th { font-family: var(--mono); font-size: 11.5px; font-weight: 500; text-transform: uppercase; letter-spacing: 0.05em; color: var(--ink-2); background: var(--paper-2); }
thead tr.grp th { text-align: center; border-left: 1px solid var(--rule); }
tbody tr:last-child td { border-bottom: 0; }
tr.ours td { background: var(--pen-soft); }
tr.sep td { border-top: 1.5px solid var(--ink); }
td.best { font-weight: 700; }
td.c { text-align: center; color: var(--pen); }
td.l, th.l { text-align: left; white-space: normal; }

/* ---------- chart ---------- */
.charts { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; margin-top: 8px; }
.chart { border: 1px solid var(--rule); background: var(--paper); padding: 18px 18px 10px; position: relative; }
.chart h4 { font-family: var(--display); font-weight: 400; font-size: 22px; margin: 0; }
.chart .sub { font-size: 13px; color: var(--ink-3); margin: 2px 0 6px; }
.chart svg { width: 100%; height: auto; display: block; overflow: visible; }
.chart svg text { font-family: var(--body); fill: var(--ink-2); font-size: 12px; }
.chart svg text.v { fill: var(--ink); font-size: 11.5px; font-weight: 600; }
.chart svg text.name { fill: var(--ink); font-size: 12px; }
.chart svg .grid { stroke: var(--rule); stroke-width: 1; }
.chart svg .line { fill: none; stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.chart svg .dot { stroke: var(--paper); stroke-width: 2; }
.chart svg .cross { stroke: var(--ink-3); stroke-width: 1; stroke-dasharray: 3 3; visibility: hidden; }
.legend { display: flex; flex-wrap: wrap; gap: 16px; font-size: 13px; color: var(--ink-2); margin: 14px 0 2px; }
.legend i { display: inline-block; width: 18px; height: 0; border-top: 2px solid; vertical-align: middle; margin-right: 6px; }
.tip { position: absolute; pointer-events: none; background: var(--ink); color: var(--paper); font-size: 12.5px; padding: 8px 10px; border-radius: 2px; line-height: 1.5; visibility: hidden; white-space: nowrap; z-index: 5; }
.tip b { font-family: var(--mono); font-weight: 500; font-size: 11px; letter-spacing: 0.05em; display: block; opacity: 0.75; }
.tip i { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 6px; }

/* ---------- stats ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); border: 1.5px solid var(--ink); background: var(--paper); margin-top: 8px; }
.stat { padding: 22px 20px; border-left: 1px solid var(--rule); }
.stat:first-child { border-left: 0; }
.stat .n { font-family: var(--display); font-size: 44px; line-height: 1; }
.stat .n small { font-size: 22px; color: var(--ink-3); }
.stat .n em { font-style: normal; color: var(--pen); }
.stat p { font-size: 13.5px; color: var(--ink-2); margin: 10px 0 0; line-height: 1.45; }

/* ---------- figures, at-a-glance strip, folded tables ---------- */
.fig { border: 1px solid var(--rule); background: var(--paper); padding: 16px 16px 10px; margin: 18px 0 6px; overflow-x: auto; }
.fig svg { width: 100%; min-width: 640px; height: auto; display: block; }
.glance { margin-top: 28px; }
.stat .n.sm { font-size: 31px; line-height: 1.25; white-space: nowrap; }
.stat .n.sm span { color: var(--ink-3); }
.topcite { margin-top: 28px; }
.topcite .k { font-family: var(--mono); font-size: 12px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--pen); margin: 0 0 8px; }
.topcite pre { margin: 0; }
details.fold { border: 1px solid var(--rule); background: var(--paper); margin: 14px 0; }
details.fold > summary { cursor: pointer; list-style: none; position: relative; padding: 12px 44px 12px 14px; font-size: 14px; color: var(--ink-2); }
details.fold > summary::-webkit-details-marker { display: none; }
details.fold > summary b { color: var(--ink); font-weight: 600; }
details.fold > summary::after { content: "+"; position: absolute; right: 14px; top: 7px; font-family: var(--mono); font-size: 20px; color: var(--pen); }
details.fold[open] > summary::after { content: "–"; }
details.fold .tbl { border: 0; border-top: 1px solid var(--rule); margin: 0; }
@media (max-width: 860px) { .stat .n.sm { font-size: 24px; } }

/* ---------- faq ---------- */
.faq { max-width: 820px; }
.faq details { border-bottom: 1px solid var(--rule); padding: 4px 0; }
.faq details:first-child { border-top: 1px solid var(--rule); }
.faq summary { cursor: pointer; list-style: none; font-family: var(--display); font-size: 23px; line-height: 1.25; padding: 14px 34px 14px 0; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 4px; top: 10px; font-family: var(--mono); font-size: 22px; color: var(--pen); transition: transform 0.2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { color: var(--ink-2); font-size: 16px; margin: 0 0 16px; }

/* ---------- code / steps / bibtex ---------- */
pre { font-family: var(--mono); font-size: 13px; line-height: 1.6; background: var(--ink); color: var(--paper); padding: 20px 22px; overflow-x: auto; margin: 14px 0; border-radius: 2px; position: relative; }
@media (prefers-color-scheme: dark) { pre { background: var(--paper-2); color: var(--ink); border: 1px solid var(--rule); } }
.steps { counter-reset: s; list-style: none; padding: 0; margin: 0; max-width: 820px; }
.steps li { counter-increment: s; display: grid; grid-template-columns: 46px 1fr; gap: 6px; padding: 14px 0; border-bottom: 1px solid var(--rule); }
.steps li::before { content: counter(s, decimal-leading-zero); font-family: var(--mono); font-size: 13px; color: var(--pen); padding-top: 3px; }
.steps li div b { font-weight: 600; }
.steps li div span { display: block; color: var(--ink-2); font-size: 15px; }
.copy { position: absolute; top: 10px; right: 10px; font-family: var(--mono); font-size: 11.5px; background: transparent; color: inherit; border: 1px solid currentColor; padding: 4px 9px; border-radius: 2px; cursor: pointer; opacity: 0.7; }
.copy:hover { opacity: 1; }

footer { margin-top: 90px; border-top: 1.5px solid var(--ink); padding: 26px 0 60px; font-size: 14px; color: var(--ink-2); }
footer p { max-width: 820px; }

/* ---------- motion ---------- */
@media (prefers-reduced-motion: no-preference) {
  .rise { opacity: 0; transform: translateY(14px); animation: rise 0.7s cubic-bezier(0.2, 0.7, 0.2, 1) forwards; }
  .rise.d1 { animation-delay: 0.08s; } .rise.d2 { animation-delay: 0.18s; } .rise.d3 { animation-delay: 0.3s; } .rise.d4 { animation-delay: 0.42s; } .rise.d5 { animation-delay: 0.56s; }
  @keyframes rise { to { opacity: 1; transform: none; } }
}

/* ---------- responsive ---------- */
@media (max-width: 860px) {
  body { font-size: 16px; }
  .wrap { padding: 0 18px; }
  .hero { padding-top: 56px; padding-bottom: 40px; }
  .lede, .two, .charts { grid-template-columns: 1fr; }
  .lede > div + div { border-left: 0; border-top: 1.5px solid var(--ink); }
  .stats { grid-template-columns: 1fr 1fr; }
  .stat:nth-child(3) { border-left: 0; }
  .stat:nth-child(n+3) { border-top: 1px solid var(--rule); }
  .rounds { grid-template-columns: 1fr; gap: 10px; }
  .rounds .arrow { transform: rotate(90deg); height: 26px; }
  .eq { font-size: 19px; text-align: left; }
  section { padding-top: 56px; }
}