@font-face{font-family:Editorial;src:url('../assets/fonts/editorial-regular.woff2') format('woff2');font-weight:400;font-display:swap}
@font-face{font-family:Editorial;src:url('../assets/fonts/editorial-bold.woff2') format('woff2');font-weight:700;font-display:swap}
@font-face{font-family:PaperSans;src:url('../assets/fonts/sans-regular.woff2') format('woff2');font-weight:400;font-display:swap}
@font-face{font-family:PaperSans;src:url('../assets/fonts/sans-bold.woff2') format('woff2');font-weight:700;font-display:swap}
@font-face{font-family:PaperMono;src:url('../assets/fonts/mono-regular.woff2') format('woff2');font-weight:400;font-display:swap}

:root{
  --p-sage:oklch(72% .12 299);
  --p-green:oklch(50% .17 288);
  --p-ink:oklch(15% .006 286);
  --p-paper:oklch(100% 0 0);
  --p-muted:oklch(49% .010 286);
  --p-faint:oklch(93% .020 293);
  --paper:var(--p-paper);
  --paper-raised:oklch(98.5% .003 286);
  --ink:var(--p-ink);
  --muted:var(--p-muted);
  --accent:var(--p-green);
  --accent-soft:var(--p-sage);
  --rule:oklch(89% .018 293);
  --wash:oklch(95% .023 293);
  --focus:var(--p-green);
  --serif:Editorial,'Noto Serif CJK SC','Source Han Serif SC','Songti SC',serif;
  --sans:PaperSans,-apple-system,BlinkMacSystemFont,'PingFang SC','Microsoft YaHei',sans-serif;
  --mono:PaperMono,'SFMono-Regular',Consolas,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:88px}
body{min-width:320px;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased}
body.dialog-open{overflow:hidden}
a{color:inherit;text-decoration:none}
button,a{-webkit-tap-highlight-color:transparent}
button{font:inherit;color:inherit;cursor:pointer}
button{border:0;background:none}
button:disabled{cursor:not-allowed;opacity:.45}
:focus-visible{outline:2px solid var(--focus);outline-offset:4px}
::selection{background:var(--accent);color:var(--paper-raised)}
img,svg,canvas{display:block;max-width:100%}
.reading-progress{position:fixed;inset:0 0 auto;height:3px;background:transparent;z-index:80;pointer-events:none}
.reading-progress span{display:block;height:100%;width:0;background:var(--accent);transform-origin:left;transition:width .12s linear}

/* Cover */
.hero{position:relative;min-height:100dvh;overflow:hidden;display:flex;align-items:center;border-bottom:1px solid var(--rule)}
#hero-wall{position:absolute;inset:0;width:100%;height:100%;max-width:none;pointer-events:none;opacity:.9;transition:opacity .22s ease-out,transform .22s ease-out}
.hero::before{content:'';position:absolute;inset:0;pointer-events:none;background:linear-gradient(90deg,var(--paper) 0%,var(--paper) 37%,oklch(100% 0 0 / .90) 54%,oklch(100% 0 0 / .12) 100%)}
.hero-inner{position:relative;width:min(1440px,100%);margin:0 auto;padding:104px 6vw 88px;z-index:1}
.hero-copy{max-width:820px}
.eyebrow{font-family:var(--mono);font-size:11px;line-height:1.6;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);margin-bottom:26px}
.hero h1{font-family:var(--serif);font-weight:400;font-size:clamp(44px,5.2vw,76px);line-height:1.07;letter-spacing:-.035em;max-width:840px;text-wrap:balance}
.hero h1 span{display:block;color:var(--accent)}
.author-line{margin-top:24px;font-size:14px;letter-spacing:.015em;color:var(--muted)}
.hero-deck{font-family:var(--serif);font-size:clamp(21px,2vw,29px);line-height:1.38;margin-top:30px;max-width:660px}
.hero-abstract{margin-top:18px;max-width:650px;font-size:16px;line-height:1.75;color:var(--muted)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.button{min-height:44px;display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 18px;border:1px solid var(--ink);border-radius:999px;font-size:13px;line-height:1.2;transition:background-color .18s ease-out,color .18s ease-out,transform .18s ease-out}
.button:hover{background:var(--ink);color:var(--paper-raised)}
.button:active{transform:scale(.97)}
.button-primary{background:var(--accent);border-color:var(--accent);color:var(--paper-raised)}
.button-primary:hover{background:var(--ink);border-color:var(--ink)}
.button-quiet{border-color:var(--rule);background:oklch(100% 0 0 / .74)}
.button svg{width:15px;height:15px}
.hero-metrics{display:flex;flex-wrap:wrap;gap:0;margin-top:42px;border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);max-width:700px}
.hero-metric{padding:18px 30px 18px 0;margin-right:30px;border-right:1px solid var(--rule)}
.hero-metric:last-child{border-right:0;margin-right:0}
.hero-metric strong{display:block;font-family:var(--serif);font-size:30px;font-weight:400;line-height:1.1;color:var(--accent)}
.hero-metric span{display:block;margin-top:6px;font-family:var(--mono);font-size:10px;letter-spacing:.05em;color:var(--muted);text-transform:uppercase}
.cover-modes{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin-top:26px;font-size:11px;color:var(--muted)}
.mode-button{min-height:44px;padding:8px 13px;border:1px solid transparent;border-radius:999px;font-family:var(--mono);font-size:11px;transition:border-color .18s,color .18s,background-color .18s}
.mode-button:hover{border-color:var(--rule)}
.mode-button[aria-selected=true]{border-color:var(--accent);color:var(--accent);background:var(--paper-raised)}
.scroll-cue{position:absolute;left:50%;bottom:24px;transform:translateX(-50%);font-family:var(--mono);font-size:10px;letter-spacing:.2em;color:var(--muted);z-index:1}

/* Sticky reading header */
.reader-header{position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:64px;padding:8px 28px;background:oklch(100% 0 0 / .96);border-bottom:1px solid var(--rule);backdrop-filter:blur(12px)}
.reader-brand{font-family:var(--serif);font-size:18px;white-space:nowrap}
.reader-brand small{display:block;font-family:var(--mono);font-size:9px;letter-spacing:.06em;color:var(--muted);text-transform:uppercase}
.reader-actions{display:flex;align-items:center;gap:6px}
.header-button,.header-link{min-height:44px;padding:8px 11px;display:inline-flex;align-items:center;gap:7px;font-size:12px;border-radius:4px;transition:background-color .18s,color .18s}
.header-button:hover,.header-link:hover{background:var(--wash);color:var(--accent)}
.header-button svg,.header-link svg{width:15px;height:15px}
.current-chapter{font-family:var(--mono);font-size:10px;letter-spacing:.04em;color:var(--muted);max-width:330px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* Main reading grid */
.paper-shell{display:grid;grid-template-columns:188px minmax(0,740px) 278px;gap:40px;max-width:1440px;margin:0 auto;padding:64px 36px 128px}
.toc{position:sticky;top:96px;align-self:start;max-height:calc(100dvh - 120px);overflow:auto;padding-right:12px;scrollbar-width:thin;scrollbar-color:var(--accent-soft) transparent}
.toc-title{font-family:var(--mono);font-size:10px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-bottom:18px}
.toc a{display:block;padding:8px 0 8px 13px;border-left:1px dotted var(--rule);font-size:12px;line-height:1.45;color:var(--muted);transition:color .18s,border-color .18s,padding-left .18s}
.toc a:hover{color:var(--accent);padding-left:17px}
.toc a[aria-current=true]{color:var(--accent);border-left:2px solid var(--accent);padding-left:12px;font-weight:700}
.toc-note{margin-top:28px;padding-top:18px;border-top:1px solid var(--rule);font-size:11px;line-height:1.65;color:var(--muted)}
.paper{min-width:0}
.paper-section{margin-bottom:96px;scroll-margin-top:84px}
.paper-section>h1{font-family:var(--serif);font-size:clamp(34px,3.1vw,46px);font-weight:400;line-height:1.15;letter-spacing:-.025em;margin-bottom:32px;text-wrap:balance}
.paper h2{font-family:var(--serif);font-size:26px;font-weight:400;line-height:1.28;letter-spacing:-.012em;margin:48px 0 18px;scroll-margin-top:86px}
.paper h3{font-family:var(--serif);font-size:21px;font-weight:400;line-height:1.35;margin:34px 0 14px}
.paper p{font-size:16.5px;line-height:1.76;margin:0 0 19px;max-width:72ch;overflow-wrap:break-word}
.paper strong{font-weight:700}
.paper em{font-family:var(--serif)}
.citation{color:var(--accent);border-bottom:1px dotted var(--accent);transition:border-color .18s,background-color .18s}
.citation:hover{border-bottom-style:solid;background:var(--wash)}
.reference-target{animation:referencePulse 1.2s ease-out}
@keyframes referencePulse{0%{background:var(--accent-soft)}100%{background:transparent}}
.abstract-section{border-bottom:1px solid var(--rule);padding-bottom:48px}
.abstract-section .keywords{font-size:13px;color:var(--muted);border-top:1px solid var(--rule);padding-top:18px;margin-top:26px}
.display-math{overflow-x:auto;padding:12px 0}
math{font-size:17px}
.table-scroll{overflow-x:auto;margin:30px 0 12px;scrollbar-width:thin}
table{width:100%;border-collapse:collapse;font-size:13px;line-height:1.55}
caption{caption-side:top;text-align:left;font-family:var(--serif);font-size:20px;margin-bottom:16px}
th{text-align:left;font-family:var(--mono);font-size:10px;letter-spacing:.025em;text-transform:uppercase;color:var(--muted)}
th,td{padding:12px 12px 12px 0;border-bottom:1px solid var(--rule);vertical-align:top}
thead th{border-top:2px solid var(--ink);border-bottom:1px solid var(--ink)}
tbody tr:last-child td{border-bottom:2px solid var(--ink)}

/* Figures and evidence */
.evidence-figure{margin:42px 0 52px;padding:20px 0 22px;border-top:1px solid var(--rule);border-bottom:1px solid var(--rule)}
.figure-toolbar{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:12px}
.figure-label{font-family:var(--mono);font-size:10px;letter-spacing:.08em;color:var(--muted);text-transform:uppercase}
.data-button{min-height:44px;padding:8px 0 8px 12px;color:var(--accent);font-size:12px;border-bottom:1px dotted var(--accent)}
.data-button:hover{border-bottom-style:solid}
.chart{width:100%;height:330px;min-width:0;overflow:hidden}
.evidence-figure[data-chart=cadence] .chart{height:340px}
.evidence-figure figcaption{font-size:12.5px;line-height:1.65;color:var(--muted);margin-top:14px;max-width:72ch}
.chart-fallback{margin:12px auto;width:100%;height:auto}

/* Contextual data panel */
.context-panel{position:sticky;top:96px;align-self:start;border-top:2px solid var(--accent);padding-top:16px;max-height:calc(100dvh - 112px);overflow:auto;scrollbar-width:thin}
.context-kicker{font-family:var(--mono);font-size:10px;letter-spacing:.08em;color:var(--accent);text-transform:uppercase}
.context-title{font-family:var(--serif);font-size:23px;line-height:1.28;margin-top:8px}
.context-subtitle{font-size:11px;line-height:1.55;color:var(--muted);margin-top:5px}
.context-metric{font-family:var(--serif);font-size:38px;line-height:1.1;color:var(--accent);margin-top:22px}
.context-metric-label{font-size:11px;line-height:1.5;color:var(--muted);margin-top:4px}
.context-chart{height:126px;margin:14px -8px 4px;overflow:hidden}
.context-stats{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--rule)}
.context-stat{padding:14px 10px 12px 0;border-bottom:1px solid var(--rule)}
.context-stat:nth-child(odd){border-right:1px solid var(--rule)}
.context-stat:nth-child(even){padding-left:14px}
.context-stat strong{display:block;font-family:var(--serif);font-size:20px;font-weight:400}
.context-stat span{display:block;font-size:10px;line-height:1.45;color:var(--muted);margin-top:3px}
.context-source{min-height:44px;margin-top:12px;padding:9px 0;font-size:11px;color:var(--accent);text-align:left;border-bottom:1px dotted var(--accent)}
.context-source:hover{border-bottom-style:solid}
.context-note{font-size:10.5px;line-height:1.6;color:var(--muted);margin-top:16px}

/* Dialogs */
dialog{width:min(760px,calc(100% - 32px));max-height:min(84dvh,900px);margin:auto;padding:0;border:1px solid var(--rule);border-radius:5px;background:var(--paper-raised);color:var(--ink);box-shadow:0 24px 80px oklch(15% .006 286 / .18);overflow:auto}
dialog::backdrop{background:oklch(15% .006 286 / .30);backdrop-filter:blur(3px)}
.dialog-head{position:sticky;top:0;z-index:2;display:flex;align-items:flex-start;justify-content:space-between;gap:20px;padding:24px 26px 18px;background:var(--paper-raised);border-bottom:1px solid var(--rule)}
.dialog-head h2{font-family:var(--serif);font-size:26px;font-weight:400;line-height:1.25}
.dialog-close{flex:0 0 44px;width:44px;height:44px;display:grid;place-items:center;border:1px solid var(--rule);border-radius:50%;transition:background-color .18s,transform .18s}
.dialog-close:hover{background:var(--wash);transform:rotate(4deg)}
.dialog-close svg{width:17px;height:17px}
.dialog-body{padding:24px 26px 30px}
.dialog-body p{font-size:14px;line-height:1.7;margin-bottom:14px}
.dialog-meta{display:grid;grid-template-columns:140px 1fr;gap:8px 18px;margin:20px 0;font-size:13px}
.dialog-meta dt{font-family:var(--mono);font-size:10px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);padding-top:3px}
.dialog-meta dd{line-height:1.65}
.data-list{width:100%;margin:18px 0;font-size:13px}
.data-list th,.data-list td{padding:10px 12px 10px 0}
.dialog-note{font-size:12px!important;color:var(--muted);border-top:1px solid var(--rule);padding-top:16px;margin-top:20px}
.dialog-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.toc-dialog-list{display:grid;gap:2px}
.toc-dialog-list a{display:flex;justify-content:space-between;gap:20px;min-height:44px;padding:12px 0;border-bottom:1px solid var(--rule);font-size:14px}
.toc-dialog-list a:hover{color:var(--accent)}
.toc-dialog-list span{font-family:var(--mono);font-size:10px;color:var(--muted)}
.chinese-summary{font-family:var(--sans)}
.chinese-summary h3{font-family:var(--serif);font-size:21px;font-weight:400;margin-bottom:18px}
.chinese-summary p{font-size:15px;line-height:1.9;margin-bottom:16px;text-align:justify}
.chinese-summary strong{font-weight:700}

/* Footer */
.site-footer{border-top:1px solid var(--rule);padding:40px 36px 54px}
.footer-inner{max-width:1100px;margin:0 auto;display:grid;grid-template-columns:1.4fr 1fr;gap:48px}
.footer-title{font-family:var(--serif);font-size:24px;font-weight:400}
.footer-copy{font-size:12px;line-height:1.75;color:var(--muted);margin-top:10px;max-width:640px}
.footer-links{display:flex;flex-direction:column;align-items:flex-start;gap:8px;font-size:13px}
.footer-links a{min-height:44px;display:inline-flex;align-items:center;color:var(--accent);border-bottom:1px dotted var(--accent)}
.footer-links a:hover{border-bottom-style:solid}

@media(max-width:1280px){
  .paper-shell{grid-template-columns:176px minmax(0,760px);justify-content:center;gap:36px}
  .context-panel{display:none}
  .current-chapter{display:block}
}
@media(max-width:1000px){
  .hero-inner{padding-left:28px;padding-right:28px}
  .hero-copy{max-width:680px}
  .paper-shell{display:block;max-width:790px;padding:52px 28px 100px}
  .toc{display:none}
  .reader-header{padding:8px 18px}
  .reader-brand small{display:none}
  .current-chapter{display:none}
}
@media(max-width:640px){
  html{scroll-padding-top:74px}
  .hero{align-items:flex-start;min-height:100dvh}
  .hero::before{background:linear-gradient(180deg,var(--paper) 0%,var(--paper) 45%,oklch(100% 0 0 / .86) 75%,oklch(100% 0 0 / .20) 100%)}
  .hero-inner{padding:82px 20px 72px}
  .eyebrow{font-size:9px;margin-bottom:20px;max-width:320px}
  .hero h1{font-size:clamp(40px,11.5vw,54px);max-width:560px}
  .author-line{font-size:12px;line-height:1.7}
  .hero-deck{font-size:22px;margin-top:24px}
  .hero-abstract{font-size:14px;line-height:1.7;max-width:520px}
  .hero-actions{gap:8px;margin-top:24px}
  .hero-metrics{margin-top:30px}
  .hero-metric{padding:14px 16px 14px 0;margin-right:16px}
  .hero-metric strong{font-size:25px}
  .hero-metric span{font-size:8px}
  .cover-modes{margin-top:18px}
  .scroll-cue{display:none}
  .reader-header{min-height:58px;padding:6px 10px;gap:6px}
  .reader-brand{font-size:15px;max-width:150px;white-space:normal;line-height:1.2}
  .reader-actions{gap:0}
  .header-button,.header-link{padding:8px;font-size:11px}
  .header-button svg,.header-link svg{display:none}
  .paper-shell{padding:42px 18px 80px}
  .paper-section{margin-bottom:72px}
  .paper-section>h1{font-size:35px;margin-bottom:24px}
  .paper h2{font-size:24px;margin-top:38px}
  .paper p{font-size:16px;line-height:1.75}
  .chart{height:290px}
  .evidence-figure{margin:34px 0 44px}
  .figure-label{font-size:9px}
  .figure-toolbar{gap:8px}
  .data-button{font-size:11px}
  .site-footer{padding:34px 20px 44px}
  .footer-inner{grid-template-columns:1fr;gap:28px}
  .dialog-head{padding:20px 18px 14px}
  .dialog-body{padding:20px 18px 24px}
  .dialog-head h2{font-size:23px}
  .dialog-meta{grid-template-columns:1fr;gap:3px}
  .dialog-meta dd{margin-bottom:10px}
  .chinese-summary p{text-align:left;font-size:14px}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
}
@media print{
  .reading-progress,.hero,.reader-header,.toc,.context-panel,.figure-toolbar,.site-footer,dialog{display:none!important}
  .paper-shell{display:block;padding:0;max-width:none}
  .paper-section{break-inside:auto;margin-bottom:44px}
  .paper p{font-size:11pt;line-height:1.55}
  .evidence-figure{break-inside:avoid}
  .chart{display:none}
  body{background:white}
}
.skip-link{position:fixed;top:8px;left:8px;z-index:100;padding:10px 14px;background:var(--ink);color:var(--paper-raised);transform:translateY(-160%);transition:transform .18s}
.skip-link:focus{transform:translateY(0)}
.references .csl-entry{position:relative;margin:0 0 20px;padding-left:24px;font-size:13.5px;line-height:1.65;overflow-wrap:anywhere}
.references .csl-entry::before{content:'';position:absolute;left:0;top:.72em;width:5px;height:5px;background:var(--accent-soft);border-radius:50%}
.references a{color:var(--accent);border-bottom:1px dotted var(--accent)}
.references a:hover{border-bottom-style:solid}
/* humarb identity */
.hero-logo{position:absolute;top:30px;left:6vw;display:inline-flex;padding:10px 12px 12px 0}
.hero-logo img{display:block;width:176px;height:auto;aspect-ratio:896/292}
.paper-doi{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin-top:8px;font-family:var(--mono);font-size:11px;color:var(--muted);letter-spacing:.025em}
.paper-doi>span{font-size:9px;letter-spacing:.10em;color:var(--accent)}
.paper-doi a{color:var(--accent);border-bottom:1px dotted var(--accent);overflow-wrap:anywhere}
.paper-doi a:hover,.footer-doi a:hover,.author-site:hover{border-bottom-style:solid}
.author-site{color:var(--accent);border-bottom:1px dotted var(--accent);overflow-wrap:anywhere}
.humarb-brand{display:inline-flex;align-items:center;min-width:148px;min-height:44px}
.humarb-brand img{display:block;aspect-ratio:896/292}
.humarb-brand .brand-full{width:128px;height:auto}
.humarb-brand .brand-mark{display:none;width:32px;height:32px;aspect-ratio:auto}
.footer-logo{display:block;width:128px;height:auto;aspect-ratio:896/292;margin-bottom:10px}
.footer-doi{font-family:var(--mono);font-size:11px;line-height:1.65;color:var(--muted);margin-bottom:8px}
.footer-doi a{color:var(--accent);border-bottom:1px dotted var(--accent);overflow-wrap:anywhere}
@media(max-width:640px){
  .hero-logo{top:14px;left:20px;padding-top:8px}
  .hero-logo img{width:144px}
  .humarb-brand{min-width:42px;justify-content:center}
  .humarb-brand .brand-full{display:none}
  .humarb-brand .brand-mark{display:block}
  .paper-doi{font-size:10px;line-height:1.65}
}