/* Adapted from the NeuralOS reading guide; see the retained MIT license. */
/* Same self-hosted font families and color tokens as the PAW application. */
@font-face{font-family:Inter;font-style:normal;font-weight:400;font-display:swap;src:url("fonts/inter-latin-400-normal.woff2") format("woff2")}
@font-face{font-family:Inter;font-style:normal;font-weight:500;font-display:swap;src:url("fonts/inter-latin-500-normal.woff2") format("woff2")}
@font-face{font-family:Inter;font-style:normal;font-weight:600;font-display:swap;src:url("fonts/inter-latin-600-normal.woff2") format("woff2")}
@font-face{font-family:Inter;font-style:normal;font-weight:700;font-display:swap;src:url("fonts/inter-latin-700-normal.woff2") format("woff2")}
@font-face{font-family:"JetBrains Mono";font-style:normal;font-weight:400;font-display:swap;src:url("fonts/jetbrains-mono-latin-400-normal.woff2") format("woff2")}
:root{--ink:#111827;--muted:#4b5563;--paper:#fff;--line:#e5e7eb;--accent:#0369a1;--soft:#f9fafb;--sans:Inter,system-ui,sans-serif;--mono:"JetBrains Mono","Fira Code",monospace}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.65 var(--sans);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
::selection{background:#e0f2fe;color:#0c4a6e}
a{color:var(--accent);text-underline-offset:3px}
a:hover{color:#0c4a6e}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #0284c7;outline-offset:4px}
h1,h2,h3{line-height:1.2;font-weight:600;letter-spacing:-.025em}
h1{font-size:clamp(2.25rem,4.2vw,3.25rem);font-weight:700;letter-spacing:-.035em;margin:.3em 0 .5em}
h2{font-size:2rem;margin:1.6em 0 .6em}
h3{font-size:1.18rem;line-height:1.4}
p{margin:0 0 1em}
.shell{max-width:1160px;margin:auto;padding:0 36px}
.site-header{background:var(--paper);border-bottom:1px solid var(--line)}
.header-inner{display:flex;justify-content:space-between;gap:24px;align-items:center;min-height:72px}
.wordmark{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink);white-space:nowrap}
.wordmark:hover{color:var(--ink)}
.brand-icon{display:flex;align-items:center;justify-content:center;width:36px;height:36px;padding:6px;border-radius:8px;background:var(--ink)}
.brand-icon img{display:block;width:100%;height:100%;filter:brightness(0) invert(1)}
.brand-name{display:flex;flex-direction:column;line-height:1.4}
.brand-name strong{font-size:18px;font-weight:700}
.brand-name>span{font-size:12px;color:#6b7280;font-weight:400}
.site-nav{display:flex;align-items:center;gap:4px;flex-wrap:wrap}
.site-nav a{padding:8px 12px;border-radius:6px;color:var(--muted);font-size:14px;font-weight:500;text-decoration:none;white-space:nowrap}
.site-nav a:hover{background:var(--soft);color:var(--ink)}
.site-nav a[aria-current="page"]{background:#f3f4f6;color:var(--ink)}
.skip{position:absolute;left:-9999px}
.skip:focus{left:12px;top:12px;z-index:10;background:var(--paper);padding:8px;border-radius:6px}
.hero{padding:64px 0 48px;display:grid;grid-template-columns:minmax(0,1.55fr) minmax(260px,1fr);gap:60px;align-items:center}
.eyebrow{font-size:12px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);margin:0 0 14px}
.lead{font-size:20px;line-height:1.65;max-width:760px}
.muted,.date,.authors{color:var(--muted)}
.date{font-size:14px}
.inline-links{display:flex;align-items:center;gap:13px;flex-wrap:wrap}
.button{display:inline-block;background:var(--ink);color:white;text-decoration:none;padding:10px 20px;border-radius:8px;font-size:15px;font-weight:500}
.button:hover{background:#1f2937;color:white}
.hero-note{border:1px solid var(--line);padding:28px;background:var(--soft);border-radius:12px}
.hero-note h2{font-size:1.5rem;margin:0 0 18px}
.cycle{margin:20px 0;display:grid;gap:8px;text-align:center;font-size:15px}
.cycle span{border:1px solid var(--line);border-radius:8px;padding:10px;background:var(--paper)}
.cycle b{font-weight:400;color:var(--accent)}
.hero-note p{font-size:14px}
.section{padding:10px 0 44px;border-top:1px solid var(--line)}
.section-intro{display:flex;justify-content:space-between;gap:30px;align-items:baseline}
.section-intro p{color:var(--muted);font-size:14px}
.guides{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px}
.guide-link{padding:20px 0;border-top:2px solid var(--accent)}
.guide-link .number{font-size:12px;color:var(--muted)}
.guide-link h3{margin:8px 0 12px}
.guide-link h3 a{text-decoration:none}
.guide-link p{font-size:15px;color:var(--muted)}
.anchor-paper{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,2fr);gap:35px;padding:28px 0}
.anchor-paper h3{margin-top:0}
.reading-path{font-size:17px;line-height:2}
.prose{max-width:850px;margin:44px auto 70px}
.prose h1{font-size:clamp(2.1rem,4vw,3rem)}
.prose h2{font-size:1.75rem;margin-top:1.8em}
.prose li{margin-bottom:10px}
.breadcrumb{color:var(--muted);font-size:14px;margin-bottom:24px}
.breadcrumb a{font-size:14px}
.facts{display:grid;grid-template-columns:155px minmax(0,1fr);border-top:1px solid var(--line);font-size:15px}
.facts dt,.facts dd{padding:12px 0;margin:0;border-bottom:1px solid var(--line)}
.facts dt{font-weight:600;padding-right:20px}
.comparison{border-left:3px solid var(--line);padding-left:20px;margin:24px 0}
.source-links{font-size:14px}
.site-footer{border-top:1px solid var(--line);padding-top:28px;padding-bottom:36px;display:flex;justify-content:space-between;gap:30px;font-size:13px;color:var(--muted)}
.site-footer p{margin:5px 0}
.page-top{padding:48px 0 28px}
.page-top h1{font-size:clamp(2.25rem,4vw,3.25rem)}
.explorer-controls{display:flex;flex-wrap:wrap;gap:18px;padding:24px;background:var(--soft);border:1px solid var(--line);border-radius:12px;align-items:end;margin-bottom:18px}
.control{display:flex;flex-direction:column;gap:5px;min-width:0}
.control.search{flex:1;min-width:210px}
label{font-size:13px;font-weight:600}
input,select,button{font:inherit;font-size:15px;padding:10px 12px;border:1px solid #d1d5db;border-radius:8px;background:var(--paper);color:var(--ink)}
input,select{max-width:100%}
input{width:100%}
button{cursor:pointer;font-weight:500}
button:hover{background:#f3f4f6}
.result-line{font-size:14px;color:var(--muted);margin:20px 0}
.lit-paper-row{display:grid;grid-template-columns:110px minmax(0,1fr);gap:25px;padding:27px 0;border-top:1px solid var(--line)}
.lit-paper-row[hidden]{display:none}
.paper-year{font-size:20px;font-weight:600;font-variant-numeric:tabular-nums}
.paper-category{font-size:12px;display:block;color:var(--muted);line-height:1.5;margin-top:8px}
.lit-paper-row h2{font-size:20px;font-weight:600;line-height:1.4;letter-spacing:-.015em;margin:0 0 8px}
.lit-paper-row h2 a{text-decoration:none;color:var(--ink)}
.lit-paper-row h2 a:hover{color:var(--accent)}
.lit-paper-row .authors{font-size:13px;margin-bottom:10px}
.lit-paper-row p{font-size:15px}
.paper-links{font-size:14px;display:flex;flex-wrap:wrap;gap:14px}
.download-list{list-style:none;padding:0}
.download-list li{padding:15px 0;border-bottom:1px solid var(--line)}
code,pre{font-family:var(--mono)}
code{font-size:.86em;overflow-wrap:anywhere}
blockquote{margin:24px 0;padding:0 24px;border-left:3px solid var(--accent)}
.paper-heading{font-size:1.7rem;margin-top:0}
.citation{padding:22px;background:var(--soft);border:1px solid var(--line);border-radius:12px;white-space:pre-wrap;overflow-wrap:anywhere;font-size:14px}
.topic-links{padding-left:22px}
.topic-links li{margin:12px 0}
@media(max-width:800px){
  .header-inner{align-items:flex-start;flex-direction:column;padding-top:16px;padding-bottom:16px;gap:12px}
  .site-nav{gap:4px;margin-left:-10px}
  .site-nav a{padding:8px 10px}
  .hero{grid-template-columns:1fr;gap:25px;padding-top:40px}
  .hero-note{max-width:100%}
  .guides{grid-template-columns:1fr;gap:6px}
  .anchor-paper{grid-template-columns:1fr;gap:10px}
  .section-intro{display:block}
  .site-footer{flex-direction:column;gap:14px}
  .shell{padding-left:22px;padding-right:22px}
  .facts{grid-template-columns:125px minmax(0,1fr)}
  .lit-paper-row{grid-template-columns:1fr;gap:7px}
  .paper-year{font-size:16px}
  .paper-category{display:inline;margin-left:12px}
  .explorer-controls{padding:16px}
  .control{width:100%}
  .control.search{min-width:0}
  button{flex:1}
  .prose{margin-top:30px}
  .site-footer{padding-top:24px;padding-bottom:30px}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}