:root{
    --bg:#F5F4F0; --surface:#FFFFFF; --surface2:#EFEDE7;
    --ink:#24272C; --muted:#6C6F76; --line:#DDD9CF; --line2:#E8E5DD;
    --accent:#B01E3C; --accent-ink:#8E1830; --accent-wash:#F7E9EC;
    --nepal-wash:#FBF3E4; --nepal-edge:#C98A1B; --nepal-ink:#7A5410;
    --world-wash:#EAF1F3; --world-edge:#3F7C8A; --world-ink:#2C5762;
    --ok:#2E7D4F; --ok-wash:#E7F2EB;
    --gap:#B01E3C; --gap-wash:#F7E9EC;
    --beyond:#6C6F76; --beyond-wash:#EEEDEA;
    --c-anx:#C77D0A; --c-ocd:#7C5CBF; --c-dep:#2E6FBA; --c-tra:#B4542A;
    --c-som:#2A8F83; --c-psy:#A83A8F; --c-chi:#4C8A2E; --c-eat:#C24560;
    --c-slp:#4455A8; --c-sub:#8A6D1F;
    --shadow:0 1px 2px rgba(30,28,22,.06),0 6px 18px rgba(30,28,22,.05);
  }
  @media (prefers-color-scheme: dark){
    :root:not([data-theme="light"]){
      --bg:#16171A; --surface:#1E2024; --surface2:#26282D;
      --ink:#E8E6E0; --muted:#9BA0A8; --line:#33363C; --line2:#2B2E33;
      --accent:#E15C77; --accent-ink:#EE8298; --accent-wash:#33222A;
      --nepal-wash:#2C2617; --nepal-edge:#D9A64C; --nepal-ink:#E0B25C;
      --world-wash:#1D2A2E; --world-edge:#6FAAB8; --world-ink:#9CC6D0;
      --ok:#5FB584; --ok-wash:#1E2C24;
      --gap:#E15C77; --gap-wash:#33222A;
      --beyond:#9BA0A8; --beyond-wash:#26282D;
      --c-anx:#E0A040; --c-ocd:#A78BE0; --c-dep:#6C9FDE; --c-tra:#D9835C;
      --c-som:#5CB8AC; --c-psy:#CE74B8; --c-chi:#7FB55E; --c-eat:#E0788D;
      --c-slp:#8492D6; --c-sub:#BFA050;
      --shadow:0 1px 2px rgba(0,0,0,.4),0 6px 18px rgba(0,0,0,.3);
    }
  }
  :root[data-theme="dark"]{
    --bg:#16171A; --surface:#1E2024; --surface2:#26282D;
    --ink:#E8E6E0; --muted:#9BA0A8; --line:#33363C; --line2:#2B2E33;
    --accent:#E15C77; --accent-ink:#EE8298; --accent-wash:#33222A;
    --nepal-wash:#2C2617; --nepal-edge:#D9A64C; --nepal-ink:#E0B25C;
    --world-wash:#1D2A2E; --world-edge:#6FAAB8; --world-ink:#9CC6D0;
    --ok:#5FB584; --ok-wash:#1E2C24;
    --gap:#E15C77; --gap-wash:#33222A;
    --beyond:#9BA0A8; --beyond-wash:#26282D;
    --c-anx:#E0A040; --c-ocd:#A78BE0; --c-dep:#6C9FDE; --c-tra:#D9835C;
    --c-som:#5CB8AC; --c-psy:#CE74B8; --c-chi:#7FB55E; --c-eat:#E0788D;
    --c-slp:#8492D6; --c-sub:#BFA050;
    --shadow:0 1px 2px rgba(0,0,0,.4),0 6px 18px rgba(0,0,0,.3);
  }
  *{box-sizing:border-box}
  body{
    background:var(--bg); color:var(--ink); margin:0;
    font-family:'Source Serif 4',Georgia,serif; font-size:16.5px; line-height:1.62;
  }
  .ne{display:none; font-family:'Mukta','Noto Sans Devanagari',sans-serif}
  html[data-lang="ne"] .en{display:none}
  html[data-lang="ne"] div.ne, html[data-lang="ne"] p.ne, html[data-lang="ne"] figcaption.ne,
  html[data-lang="ne"] ol.ne, html[data-lang="ne"] ul.ne, html[data-lang="ne"] h2.ne,
  html[data-lang="ne"] h3.ne, html[data-lang="ne"] h4.ne, html[data-lang="ne"] dl.ne{display:block}
  html[data-lang="ne"] span.ne, html[data-lang="ne"] em.ne, html[data-lang="ne"] strong.ne,
  html[data-lang="ne"] b.ne, html[data-lang="ne"] i.ne, html[data-lang="ne"] a.ne{display:inline}
  html[data-lang="ne"] li.ne{display:list-item}
  html[data-lang="ne"] table.ne{display:table}
  html[data-lang="ne"] tr.ne{display:table-row}
  html[data-lang="ne"] td.ne, html[data-lang="ne"] th.ne{display:table-cell}
  html[data-lang="ne"] text.ne, html[data-lang="ne"] tspan.ne{display:inline}
  html[data-lang="ne"] body, html[data-lang="ne"] .card, html[data-lang="ne"] p{
    font-family:'Mukta','Noto Sans Devanagari',sans-serif;
  }

  h1,h2,h3,h4{font-family:'Archivo',system-ui,sans-serif; line-height:1.2; text-wrap:balance; margin:0}
  html[data-lang="ne"] h1,html[data-lang="ne"] h2,html[data-lang="ne"] h3,html[data-lang="ne"] h4{
    font-family:'Mukta','Noto Sans Devanagari',sans-serif}
  .mono{font-family:'IBM Plex Mono',ui-monospace,monospace}
  .wrap{max-width:880px; margin:0 auto; padding:0 20px 80px}

  /* top bar */
  .topbar{
    position:sticky; top:0; z-index:50; background:var(--surface);
    border-bottom:1px solid var(--line); box-shadow:var(--shadow);
  }
  .topbar-in{max-width:880px; margin:0 auto; padding:10px 20px; display:flex; align-items:center; gap:12px}
  .topbar .t{font-family:'Archivo',sans-serif; font-weight:700; font-size:14px; letter-spacing:.02em}
  .topbar .spacer{flex:1}
  .langsw{display:flex; border:1px solid var(--line); border-radius:999px; overflow:hidden}
  .langsw button{
    font-family:'Mukta','Archivo',sans-serif; font-size:13px; font-weight:600; padding:5px 14px;
    background:transparent; color:var(--muted); border:0; cursor:pointer;
  }
  .langsw button.active{background:var(--accent); color:#fff}
  .langsw button:focus-visible{outline:2px solid var(--accent); outline-offset:-2px}

  /* hero */
  .hero{padding:56px 0 34px; border-bottom:3px solid var(--ink)}
  .hero .kicker{font-family:'IBM Plex Mono',monospace; font-size:12.5px; letter-spacing:.14em;
    text-transform:uppercase; color:var(--accent); margin-bottom:14px}
  .hero h1{font-size:clamp(34px,6vw,54px); font-weight:800; letter-spacing:-.015em}
  .hero .sub{font-size:18px; color:var(--muted); max-width:62ch; margin-top:16px}
  .hero .meta{margin-top:22px; display:flex; flex-wrap:wrap; gap:8px}
  .chip{font-family:'IBM Plex Mono',monospace; font-size:11.5px; letter-spacing:.05em;
    border:1px solid var(--line); border-radius:4px; padding:3px 9px; color:var(--muted); background:var(--surface)}

  /* legend + status pills */
  .pill{display:inline-flex; align-items:center; gap:6px; font-family:'Archivo','Mukta',sans-serif;
    font-size:11.5px; font-weight:700; letter-spacing:.04em; text-transform:uppercase;
    border-radius:4px; padding:2.5px 8px; white-space:nowrap}
  html[data-lang="ne"] .pill{text-transform:none; font-size:12.5px}
  .pill.done{background:var(--ok-wash); color:var(--ok)}
  .pill.todo{background:var(--gap-wash); color:var(--gap)}
  .pill.beyond{background:var(--beyond-wash); color:var(--beyond)}
  .pill .dot{width:7px; height:7px; border-radius:50%; background:currentColor; flex:none}

  section{margin-top:64px; scroll-margin-top:70px}
  .sechead{display:flex; align-items:baseline; gap:14px; border-bottom:2px solid var(--ink); padding-bottom:10px; margin-bottom:6px}
  .secnum{font-family:'IBM Plex Mono',monospace; font-size:13px; color:var(--muted)}
  .sechead h2{font-size:26px; font-weight:800; letter-spacing:-.01em}
  .secsub{color:var(--muted); font-size:15.5px; margin:10px 0 0; max-width:66ch}
  .catmark{width:12px; height:12px; border-radius:3px; align-self:center; flex:none}

  /* disorder card */
  .card{background:var(--surface); border:1px solid var(--line); border-radius:10px;
    box-shadow:var(--shadow); margin-top:26px; overflow:hidden}
  .card-head{padding:16px 20px 12px; border-bottom:1px solid var(--line2);
    display:flex; flex-wrap:wrap; gap:10px 14px; align-items:baseline; border-left:4px solid var(--cat,var(--accent))}
  .card-head h3{font-size:19.5px; font-weight:700}
  .card-head .code{font-family:'IBM Plex Mono',monospace; font-size:12.5px; color:var(--muted)}
  .card-head .pill{margin-left:auto}
  .card-body{padding:6px 20px 18px}
  .card-body p{margin:12px 0}
  .defn{font-size:15.5px; color:var(--muted); font-style:italic; margin-top:12px}
  html[data-lang="ne"] .defn{font-style:normal}

  /* criteria block */
  .crit{background:var(--surface2); border:1px solid var(--line2); border-radius:8px; padding:14px 18px; margin:14px 0}
  .crit .crit-label{font-family:'IBM Plex Mono',monospace; font-size:11px; letter-spacing:.12em;
    text-transform:uppercase; color:var(--accent); margin-bottom:6px}
  .crit ol{margin:0; padding-left:0; list-style:none; counter-reset:crit}
  .crit ol>li{counter-increment:crit; padding-left:2.1em; position:relative; margin:8px 0; font-size:15px; line-height:1.55}
  .crit ol>li::before{content:counter(crit,upper-alpha) "."; position:absolute; left:0;
    font-family:'Archivo',sans-serif; font-weight:800; color:var(--accent)}
  .crit ul{margin:6px 0 0; padding-left:1.2em; font-size:14.5px}
  .crit ul li{margin:4px 0}
  .crit .note{font-size:13.5px; color:var(--muted); margin-top:10px}

  /* context blocks */
  .ctx{border-radius:8px; padding:12px 16px; margin:14px 0; font-size:15px}
  .ctx .ctx-label{font-family:'IBM Plex Mono',monospace; font-size:10.5px; letter-spacing:.14em;
    text-transform:uppercase; margin-bottom:5px; font-weight:500}
  .ctx.world{background:var(--world-wash); border-left:3px solid var(--world-edge)}
  .ctx.world .ctx-label{color:var(--world-ink)}
  .ctx.nepal{background:var(--nepal-wash); border-left:3px solid var(--nepal-edge)}
  .ctx.nepal .ctx-label{color:var(--nepal-ink)}
  .ctx p{margin:6px 0}

  /* tables */
  .tblwrap{overflow-x:auto; margin:14px 0}
  table.data{border-collapse:collapse; width:100%; font-size:14.5px; background:var(--surface)}
  table.data th{font-family:'Archivo','Mukta',sans-serif; font-size:12px; letter-spacing:.06em;
    text-transform:uppercase; text-align:left; color:var(--muted); border-bottom:2px solid var(--ink); padding:8px 10px}
  html[data-lang="ne"] table.data th{text-transform:none; font-size:13.5px}
  table.data td{border-bottom:1px solid var(--line2); padding:8px 10px; vertical-align:top}
  table.data td:first-child{font-weight:600}

  /* map grid */
  .mapgrid{display:grid; grid-template-columns:repeat(auto-fill,minmax(250px,1fr)); gap:10px; margin-top:20px}
  .mapcell{background:var(--surface); border:1px solid var(--line); border-left:4px solid var(--cat,var(--line));
    border-radius:8px; padding:12px 14px; display:flex; flex-direction:column; gap:6px}
  .mapcell .mc-name{font-family:'Archivo','Mukta',sans-serif; font-weight:700; font-size:14.5px; line-height:1.3}
  .mapcell .mc-items{font-size:12.5px; color:var(--muted); line-height:1.45}
  .mapcell .pill{align-self:flex-start; margin-top:2px}

  /* figures */
  figure{margin:22px 0; background:var(--surface); border:1px solid var(--line); border-radius:10px; padding:18px 18px 12px; overflow-x:auto}
  figure svg{max-width:100%; height:auto; display:block; margin:0 auto; color:var(--ink)}
  figcaption{font-size:13.5px; color:var(--muted); margin-top:10px; max-width:70ch}

  /* symptom grid (MDD) */
  .symgrid{display:grid; grid-template-columns:repeat(auto-fill,minmax(180px,1fr)); gap:8px; margin:14px 0}
  .sym{border:1px solid var(--line); border-radius:7px; padding:9px 11px; font-size:13.5px; line-height:1.4; background:var(--surface)}
  .sym .n{font-family:'IBM Plex Mono',monospace; font-size:11px; color:var(--muted); display:block; margin-bottom:2px}
  .sym.core{border-color:var(--c-dep); background:color-mix(in srgb,var(--c-dep) 9%,var(--surface)); }
  .sym.core .n{color:var(--c-dep); font-weight:500}

  /* cluster chips (PTSD, SUD) */
  .clusters{display:grid; grid-template-columns:repeat(auto-fit,minmax(200px,1fr)); gap:10px; margin:14px 0}
  .cluster{border:1px solid var(--line); border-top:3px solid var(--cat,var(--accent)); border-radius:8px; padding:11px 13px; background:var(--surface)}
  .cluster h4{font-size:13.5px; margin-bottom:6px}
  .cluster .req{font-family:'IBM Plex Mono',monospace; font-size:11px; color:var(--accent); display:block; margin-bottom:4px}
  .cluster ul{margin:0; padding-left:1.1em; font-size:13px; color:var(--muted)}
  .cluster ul li{margin:3px 0}

  .twopanel{display:grid; grid-template-columns:repeat(auto-fit,minmax(240px,1fr)); gap:12px; margin:14px 0}
  .panel{border-radius:8px; padding:13px 15px; border:1px solid var(--line); background:var(--surface)}
  .panel h4{font-size:14px; margin-bottom:6px}
  .panel ul{margin:0; padding-left:1.15em; font-size:14px}
  .panel ul li{margin:4px 0}
  .panel.pos{border-top:3px solid var(--c-psy)}
  .panel.neg{border-top:3px solid var(--muted)}

  /* toc */
  .toc{margin-top:30px; display:grid; grid-template-columns:repeat(auto-fill,minmax(220px,1fr)); gap:6px}
  .toc a{display:flex; gap:9px; align-items:center; text-decoration:none; color:var(--ink);
    border:1px solid var(--line2); background:var(--surface); border-radius:7px; padding:8px 11px;
    font-family:'Archivo','Mukta',sans-serif; font-size:13.5px; font-weight:600}
  .toc a:hover{border-color:var(--accent)}
  .toc a .secnum{font-size:11.5px}
  .toc .catmark{width:9px;height:9px}

  dl.idioms{margin:14px 0}
  dl.idioms dt{font-weight:700; font-family:'Mukta','Archivo',sans-serif; margin-top:12px}
  dl.idioms dd{margin:2px 0 0 0; font-size:15px; color:var(--muted)}

  .callout{border:1px solid var(--line); border-left:4px solid var(--accent); background:var(--surface);
    border-radius:8px; padding:13px 17px; margin:18px 0; font-size:15px}
  .footer{margin-top:70px; border-top:2px solid var(--ink); padding-top:18px; font-size:13.5px; color:var(--muted)}
  a{color:var(--accent-ink)}
  @media (prefers-reduced-motion:no-preference){ html{scroll-behavior:smooth} }

/* ===== multi-page shell ===== */
.layout{display:flex; min-height:100vh; align-items:stretch}
.sidebar{width:255px; flex:none; position:sticky; top:0; height:100vh; overflow-y:auto;
  background:var(--surface); border-right:1px solid var(--line); padding:20px 14px;
  display:flex; flex-direction:column; gap:16px}
.sidebar .brand{font-family:'Archivo','Mukta',sans-serif; font-weight:800; font-size:15.5px;
  letter-spacing:-.01em; color:var(--ink); text-decoration:none; line-height:1.25}
.sidebar .brand .sub{display:block; font-family:'IBM Plex Mono',monospace; font-weight:400;
  font-size:10px; letter-spacing:.12em; text-transform:uppercase; color:var(--accent); margin-top:4px}
.snav{display:flex; flex-direction:column; gap:2px}
.snav a{display:flex; gap:9px; align-items:center; padding:6.5px 10px; border-radius:6px;
  font-family:'Archivo','Mukta',sans-serif; font-size:13px; font-weight:600;
  color:var(--ink); text-decoration:none}
.snav a:hover{background:var(--surface2)}
.snav a.active{background:var(--accent-wash); color:var(--accent-ink)}
.snav a:focus-visible{outline:2px solid var(--accent)}
.snav .secnum{font-size:10.5px; width:20px; flex:none}
.snav .catmark{width:9px; height:9px; flex:none}
html[data-lang="ne"] .snav a{font-size:14px}
.side-foot{margin-top:auto; font-size:11px; color:var(--muted); font-family:'IBM Plex Mono',monospace; line-height:1.5}
main{flex:1; min-width:0}
main .wrap{padding-top:8px}
.pager{display:flex; justify-content:space-between; gap:12px; margin-top:56px; border-top:2px solid var(--ink); padding-top:16px}
.pager a{font-family:'Archivo','Mukta',sans-serif; font-weight:700; font-size:14px; text-decoration:none;
  color:var(--accent-ink); display:flex; flex-direction:column; gap:2px; max-width:46%}
.pager a .lbl{font-family:'IBM Plex Mono',monospace; font-size:10px; letter-spacing:.12em;
  text-transform:uppercase; color:var(--muted)}
.pager a.next{text-align:right; margin-left:auto}
.pagehead{padding:36px 0 0}
.pagehead .kicker{font-family:'IBM Plex Mono',monospace; font-size:12px; letter-spacing:.14em;
  text-transform:uppercase; color:var(--accent); margin-bottom:8px}
@media(max-width:900px){
  .layout{display:block}
  .sidebar{position:sticky; width:auto; height:auto; z-index:60; padding:10px 14px;
    border-right:0; border-bottom:1px solid var(--line); box-shadow:var(--shadow); gap:8px}
  .sidebar .top{display:flex; align-items:center; justify-content:space-between; gap:10px}
  .snav{flex-direction:row; overflow-x:auto; gap:4px; -webkit-overflow-scrolling:touch}
  .snav a{white-space:nowrap; padding:5px 9px; font-size:12.5px}
  .snav .secnum{width:auto}
  .side-foot{display:none}
}
.snav-group{font-family:'IBM Plex Mono',monospace; font-size:10px; letter-spacing:.13em;
  text-transform:uppercase; color:var(--muted); margin:14px 4px 4px}
.snav-group:first-child{margin-top:0}
html[data-lang="ne"] .snav-group{font-family:'Mukta','Noto Sans Devanagari',sans-serif; text-transform:none; font-size:12px}
@media(max-width:900px){ .snav-group{display:none} }
/* ===== learn-more resources ===== */
.resources{background:var(--surface); border:1px solid var(--line); border-left:4px solid var(--accent);
  border-radius:10px; padding:16px 20px; margin-top:28px}
.resources .res-head{font-family:'IBM Plex Mono',monospace; font-size:11px; letter-spacing:.13em;
  text-transform:uppercase; color:var(--accent); margin-bottom:4px}
html[data-lang="ne"] .resources .res-head{font-family:'Mukta',sans-serif; text-transform:none; font-size:13px}
.resources .res-hint{font-size:13px; color:var(--muted); margin:0 0 10px}
.res-item{display:flex; gap:10px; align-items:baseline; padding:7px 0; border-top:1px solid var(--line2); font-size:14.5px}
.res-type{font-family:'IBM Plex Mono',monospace; font-size:10px; letter-spacing:.08em; text-transform:uppercase;
  color:var(--muted); border:1px solid var(--line); border-radius:4px; padding:1.5px 6px; flex:none; white-space:nowrap}
.res-item a{font-weight:600}
.res-note{color:var(--muted); font-size:13.5px}
/* ===== quiz / hand-drawn touches ===== */
details.quiz{border:1.5px dashed var(--nepal-edge); border-radius:10px 14px 10px 12px;
  padding:10px 16px; margin:16px 0; background:var(--nepal-wash)}
details.quiz summary{cursor:pointer; font-family:'Caveat','Mukta',cursive; font-size:20px;
  font-weight:600; color:var(--nepal-ink); list-style-position:inside}
details.quiz summary .ne{font-family:'Mukta','Noto Sans Devanagari',sans-serif; font-size:16px; font-weight:700}
details.quiz[open] summary{margin-bottom:8px}
details.quiz summary:focus-visible{outline:2px solid var(--accent)}
.quiz-body{font-size:14.5px}
.quiz-body p{margin:6px 0}
/* ===== search ===== */
.search{position:relative}
.search input{width:100%; box-sizing:border-box; padding:8px 12px; border:1px solid var(--line);
  border-radius:8px; background:var(--bg); color:var(--ink);
  font-family:'Archivo','Mukta',sans-serif; font-size:13.5px}
.search input::placeholder{color:var(--muted)}
.search input:focus{outline:2px solid var(--accent); border-color:var(--accent)}
.qres{position:absolute; top:calc(100% + 6px); left:0; right:0; z-index:90;
  background:var(--surface); border:1px solid var(--line); border-radius:10px;
  box-shadow:var(--shadow); max-height:min(420px,55vh); overflow-y:auto}
.qres a{display:block; padding:9px 12px; border-bottom:1px solid var(--line2);
  text-decoration:none; color:var(--ink)}
.qres a:last-child{border-bottom:0}
.qres a:hover,.qres a:focus-visible{background:var(--surface2); outline:none}
.qres .qt{display:block; font-family:'Archivo','Mukta',sans-serif; font-weight:700; font-size:13px}
.qres .qs{display:block; font-size:12px; color:var(--muted); margin-top:2px; line-height:1.45}
.qres mark{background:var(--accent-wash); color:var(--accent-ink); padding:0 1px; border-radius:2px}
.qempty{padding:10px 12px; font-size:13px; color:var(--muted)}
article.card{scroll-margin-top:76px}