/* Zobi Research hub. Loaded only by /resources/, every rule scoped under .rh so articles keep their own styles.
   Font OS/2 metadata verified: instrument-sans-0..3 = 400/500/600/700. */
@font-face{font-family:'Instrument Sans';src:url("/resources/_assets/shared/instrument-sans-0.ttf") format('truetype');font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:'Instrument Sans';src:url("/resources/_assets/shared/instrument-sans-1.ttf") format('truetype');font-weight:500;font-style:normal;font-display:swap}
@font-face{font-family:'Instrument Sans';src:url("/resources/_assets/shared/instrument-sans-2.ttf") format('truetype');font-weight:600;font-style:normal;font-display:swap}
@font-face{font-family:'Instrument Sans';src:url("/resources/_assets/shared/instrument-sans-3.ttf") format('truetype');font-weight:700;font-style:normal;font-display:swap}

.rh{
  --bg:#F7F6F2; --paper:#FBFAF7; --card:#FFFFFF; --ink:#0E0E10; --muted:#46464C; --faint:#717178;
  --line:#E5E3DC; --line-strong:#CBC9C0; --dark:#0A0A0C; --green-soft:#7CC79A;
  --mono:ui-monospace,'SF Mono',Menlo,Consolas,monospace;
  --ease:cubic-bezier(.33,1,.68,1);
  --header-h:58px;
  margin:0;background:var(--bg);color:var(--ink);
  font-family:'Instrument Sans',"Helvetica Neue",Helvetica,Arial,sans-serif;
  font-size:16px;line-height:1.5;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  overflow-x:clip;
}
html:has(body.rh){scroll-behavior:auto;scroll-padding-top:calc(var(--header-h, 58px) + 16px)}
@media (max-width:759px){html:has(body.rh){scroll-padding-top:116px}}
.rh *,.rh *::before,.rh *::after{box-sizing:border-box}
.rh img{display:block;max-width:100%}
:where(.rh) a{color:inherit;text-decoration:none;transition:color .15s var(--ease),background-color .15s var(--ease),border-color .15s var(--ease)}
.rh ::selection{background:var(--ink);color:#fff}
.rh :focus-visible{outline:2px solid var(--ink);outline-offset:3px;border-radius:4px}
.rh-wrap{max-width:1240px;margin:0 auto;padding:0 clamp(18px,4.5vw,44px)}
.rh :where(h1,h2,h3,p,ul,ol){margin:0}
.rh ul,.rh ol{padding:0;list-style:none}

.rh-skip{position:absolute;left:12px;top:-60px;z-index:100;background:var(--ink);color:#fff!important;padding:10px 14px;border-radius:6px;font-size:14px}
.rh-skip:focus{top:12px}

/* ---- Buttons ---- */
.rh-btn{display:inline-flex;align-items:center;justify-content:center;min-height:40px;font:inherit;font-size:14px;font-weight:500;line-height:1.2;padding:9px 16px;border-radius:7px;border:1px solid transparent;cursor:pointer;white-space:nowrap;transition:background-color .15s var(--ease),border-color .15s var(--ease),color .15s var(--ease),transform .18s var(--ease)}
.rh-btn-lg{min-height:48px;font-size:15px;padding:13px 22px;border-radius:8px}
.rh-btn-dark{background:var(--ink);color:#fff}
.rh-btn-dark:hover{background:#2E2E33;color:#fff}
.rh-btn-line{border-color:var(--line-strong);background:rgba(255,255,255,.55);color:var(--ink)}
.rh-btn-line:hover{border-color:var(--ink)}
.rh-btn-light{background:#fff;color:var(--ink)}
.rh-btn-light:hover{background:#DEDDD9}
.rh-closing .rh-btn-light:focus-visible{outline-color:#fff}

/* ---- Header ---- */
.rh-header{position:sticky;top:0;z-index:60;background:rgba(247,246,242,.9);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.rh-header-in{height:var(--header-h);display:flex;align-items:center;gap:clamp(16px,3vw,40px)}
.rh-brand{display:flex;align-items:center;gap:12px;flex:none;min-height:44px}
.rh-brand img{height:20px;width:auto}
.rh-brand-sub{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--faint);padding-left:12px;border-left:1px solid var(--line-strong);line-height:1.1}
.rh-nav{display:flex;gap:clamp(16px,2.4vw,28px);font-size:13.5px;color:#44444A}
.rh-nav a{padding:10px 0}
.rh-nav a:hover{color:var(--ink)}
.rh-header-cta{margin-left:auto;flex:none}
.rh-nav-phone{display:none;border-top:1px solid var(--line)}
.rh-nav-phone-in{display:flex;gap:22px;font-size:14px;color:#44444A}
.rh-nav-phone a{display:inline-flex;align-items:center;min-height:44px}
.rh-nav-phone a:hover{color:var(--ink)}
@media (max-width:759px){
  .rh-nav{display:none}
  .rh-nav-phone{display:block}
}
@media (max-width:420px){
  .rh-brand-sub{display:none}
  .rh-header-cta{font-size:13.5px;padding:9px 14px}
}

/* ---- Hero ---- */
.rh-hero{padding:clamp(36px,4vw,60px) 0 clamp(36px,4vw,52px);border-bottom:1px solid var(--line)}
.rh-crumbs ol{display:flex;flex-wrap:wrap;gap:8px;font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--faint);margin-bottom:clamp(20px,3vw,28px)}
.rh-crumbs li+li::before{content:"/";margin-right:8px;color:var(--line-strong)}
.rh-crumbs a{display:inline-block;padding:4px 0}
.rh-crumbs a:hover{color:var(--ink)}
.rh-hero h1{font-weight:600;letter-spacing:-.04em;line-height:1.02;font-size:clamp(38px,5.4vw,72px);max-width:22ch;text-wrap:balance}
.rh-deck{margin-top:clamp(18px,2.6vw,26px);font-size:clamp(16px,1.9vw,19px);line-height:1.6;color:var(--muted);max-width:58ch;text-wrap:pretty}
.rh-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:clamp(24px,3.4vw,34px)}
@media (max-width:420px){.rh-actions .rh-btn{flex:1 1 100%}}

/* ---- Shared section chrome ---- */
.rh-kicker{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--faint)}
.rh-section{padding:clamp(48px,5vw,80px) 0;border-bottom:1px solid var(--line)}
.rh-section-head{display:grid;gap:10px;margin-bottom:clamp(26px,4vw,44px)}
@media (min-width:900px){.rh-section-head{grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:end;gap:48px}}
.rh-section-head h2{font-weight:600;letter-spacing:-.03em;line-height:1.1;font-size:clamp(28px,3.6vw,42px)}
.rh-section-head p{font-size:15.5px;line-height:1.6;color:var(--muted);max-width:46ch}
.rh-format{display:block;font-family:var(--mono);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--faint);line-height:1.4}
.rh-go{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:500;color:var(--ink)}
.rh-go::after{content:"\2192";transition:transform .2s var(--ease)}
.rh a:hover .rh-go::after{transform:translateX(3px)}
.rh-icon{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}

/* ---- Start here feature ---- */
.rh-start{padding:clamp(40px,6vw,72px) 0;border-bottom:1px solid var(--line)}
.rh-start .rh-kicker{margin-bottom:16px}
.rh-feature{display:grid;background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden}
@media (min-width:900px){.rh-feature{grid-template-columns:minmax(0,1.5fr) minmax(0,1fr)}}
.rh-feature-main{display:flex;flex-direction:column;gap:14px;padding:clamp(24px,4vw,48px)}
.rh-feature-title{font-weight:600;letter-spacing:-.035em;line-height:1.05;font-size:clamp(30px,4.4vw,52px)}
.rh-feature-desc{font-size:clamp(16px,1.7vw,18.5px);line-height:1.6;color:var(--muted);max-width:44ch}
.rh-feature-main .rh-go{margin-top:clamp(6px,1.4vw,14px)}
.rh-feature-main:hover .rh-feature-title{text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:6px}
.rh-feature-side{background:var(--paper);border-top:1px solid var(--line);padding:clamp(20px,3vw,36px)}
@media (min-width:900px){.rh-feature-side{border-top:0;border-left:1px solid var(--line);display:flex;flex-direction:column;justify-content:center}}
.rh-side-label{font-family:var(--mono);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--faint);margin-bottom:4px}
.rh-companion{display:block;padding:16px 0;border-top:1px solid var(--line)}
.rh-side-label+.rh-companion{border-top:0}
.rh-companion-title{display:block;font-weight:600;font-size:16.5px;letter-spacing:-.015em;line-height:1.3}
.rh-companion-title::after{content:"\00a0\2192";font-weight:500;color:var(--faint);transition:color .15s var(--ease)}
.rh-companion:hover .rh-companion-title{text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:4px}
.rh-companion:hover .rh-companion-title::after{color:var(--ink)}
.rh-companion-desc{display:block;margin-top:5px;font-size:14.5px;line-height:1.55;color:var(--muted)}

/* ---- Tools ---- */
.rh-tool-list{display:grid;border-top:1px solid var(--line)}
@media (min-width:820px){.rh-tool-list{grid-template-columns:repeat(3,minmax(0,1fr))}}
.rh-tool{display:flex;flex-direction:column;gap:10px;height:100%;padding:26px 0 30px;border-bottom:1px solid var(--line)}
@media (min-width:820px){
  .rh-tool{padding:30px clamp(18px,2.4vw,32px) 34px;border-bottom:0;border-left:1px solid var(--line)}
  .rh-tool-list li:first-child .rh-tool{border-left:0;padding-left:0}
}
.rh-tool .rh-icon{color:var(--ink);margin-bottom:6px}
.rh-tool-title{font-weight:600;font-size:clamp(19px,1.9vw,22px);letter-spacing:-.02em;line-height:1.2}
.rh-tool-desc{font-size:15px;line-height:1.6;color:var(--muted);max-width:36ch}
.rh-tool .rh-go{margin-top:auto;padding-top:8px}
.rh-tool:hover .rh-tool-title{text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:4px}

/* ---- Library ---- */
.rh-controls{display:grid;gap:16px;padding-bottom:20px;border-bottom:1px solid var(--line)}
@media (min-width:980px){.rh-controls{grid-template-columns:minmax(260px,380px) minmax(0,1fr);align-items:end;column-gap:32px}.rh-status-row{grid-column:1/-1}}
.no-js .rh-controls{display:none}
.rh-search label{display:block;font-size:13px;font-weight:500;color:var(--muted);margin-bottom:8px}
.rh-search-field{position:relative}
.rh-search-icon{position:absolute;left:13px;top:50%;transform:translateY(-50%);width:18px;height:18px;color:var(--faint);pointer-events:none}
.rh-search input{width:100%;min-height:46px;font:inherit;font-size:16px;color:var(--ink);background:#fff;border:1px solid var(--line-strong);border-radius:8px;padding:10px 14px 10px 40px;-webkit-appearance:none;appearance:none}
.rh-search input::placeholder{color:#8E8E94}
.rh-search input:hover{border-color:#A9A79E}
.rh-search input:focus{outline:none;border-color:var(--ink);box-shadow:0 0 0 3px rgba(14,14,16,.12)}
.rh-filter{display:flex;flex-wrap:wrap;gap:8px}
.rh-filter button{display:inline-flex;align-items:center;gap:7px;min-height:40px;font:inherit;font-size:14px;color:#44444A;background:rgba(255,255,255,.55);border:1px solid var(--line-strong);border-radius:999px;padding:8px 14px;cursor:pointer;transition:background-color .15s var(--ease),border-color .15s var(--ease),color .15s var(--ease)}
.rh-filter button:hover{border-color:var(--ink);color:var(--ink)}
.rh-filter button[aria-pressed="true"]{background:var(--ink);border-color:var(--ink);color:#fff}
.rh-filter button[disabled]{opacity:.45;cursor:default}
.rh-filter button[disabled]:hover{border-color:var(--line-strong);color:#44444A}
.rh-count{font-family:var(--mono);font-size:11px;opacity:.72;font-variant-numeric:tabular-nums}
.rh-status-row{display:flex;flex-wrap:wrap;align-items:center;gap:8px 16px;min-height:28px}
.rh-status{font-family:var(--mono);font-size:11.5px;letter-spacing:.04em;color:var(--faint)}
.rh-clear{font:inherit;font-size:13.5px;font-weight:500;color:var(--ink);background:none;border:0;padding:6px 0;min-height:32px;cursor:pointer;text-decoration:underline;text-underline-offset:3px}
.rh-clear:hover{color:var(--muted)}

.rh-groups{display:grid}
.rh-group{display:grid;gap:4px;padding-top:clamp(28px,4vw,40px)}
@media (min-width:900px){.rh-group{grid-template-columns:minmax(160px,220px) minmax(0,1fr);gap:40px}}
.rh-group h3{font-size:15px;font-weight:600;letter-spacing:-.01em;padding-top:18px}
@media (max-width:899px){.rh-group h3{padding:0 0 4px}}
.rh-list{border-top:1px solid var(--line)}
@media (max-width:899px){.rh-list{border-top:0}}
.rh-row{display:grid;grid-template-columns:110px minmax(0,1fr) 24px;gap:6px 22px;align-items:baseline;padding:18px 0;border-bottom:1px solid var(--line);transition:background-color .2s var(--ease),padding .2s var(--ease)}
.rh-row:hover{background:rgba(255,255,255,.6);padding-left:12px;padding-right:12px}
.rh-row-body{min-width:0}
.rh-row-title{display:block;font-weight:600;font-size:clamp(17px,1.7vw,19px);letter-spacing:-.018em;line-height:1.3}
.rh-row:hover .rh-row-title{text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:4px}
.rh-row-desc{display:block;margin-top:5px;font-size:15px;line-height:1.55;color:var(--muted);max-width:60ch}
.rh-arrow{color:var(--faint);justify-self:end;transition:transform .2s var(--ease),color .2s var(--ease)}
.rh-row:hover .rh-arrow{color:var(--ink);transform:translateX(3px)}
@media (max-width:599px){
  .rh-row{grid-template-columns:minmax(0,1fr) 20px;row-gap:6px}
  .rh-row .rh-format{grid-column:1/-1}
  .rh-row:hover{padding-left:0;padding-right:0}
}
.rh-item[hidden],.rh-group[hidden],.rh-empty[hidden],.rh-clear[hidden]{display:none!important}

.rh-empty{margin-top:clamp(28px,4vw,40px);padding:clamp(24px,4vw,36px);background:var(--paper);border:1px dashed var(--line-strong);border-radius:12px;max-width:640px}
.rh-empty-title{font-weight:600;font-size:18px;letter-spacing:-.015em}
.rh-empty-text{margin-top:8px;font-size:15px;line-height:1.6;color:var(--muted)}
.rh-empty .rh-btn{margin-top:18px}

/* ---- Approach ---- */
.rh-approach-in{display:grid;gap:18px}
@media (min-width:900px){.rh-approach-in{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px;align-items:start}}
.rh-approach h2{margin-top:12px;font-weight:600;letter-spacing:-.03em;line-height:1.1;font-size:clamp(28px,3.6vw,42px)}
.rh-approach-body p{font-size:clamp(16px,1.7vw,18px);line-height:1.65;color:#33333A;max-width:48ch}
.rh-approach-links{display:flex;flex-wrap:wrap;gap:4px 28px;margin-top:20px}
.rh-approach-links a{display:inline-flex;align-items:center;min-height:44px;font-size:15px;font-weight:500;text-decoration:underline;text-decoration-color:var(--line-strong);text-underline-offset:5px}
.rh-approach-links a:hover{text-decoration-color:var(--ink)}

/* ---- Closing + footer ---- */
.rh-closing{background:var(--dark);color:#F2F2F0}
.rh-closing-in{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px 40px;padding-block:clamp(56px,8vw,104px)}
.rh-closing h2{font-weight:600;letter-spacing:-.03em;line-height:1.1;font-size:clamp(26px,3.6vw,42px);max-width:20ch;text-wrap:balance}
.rh-footer{background:var(--dark);color:#F2F2F0;border-top:1px solid rgba(255,255,255,.08)}
.rh-footer-in{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px 32px;padding-block:28px 36px}
.rh-footer-brand{display:inline-flex;align-items:center;min-height:44px}
.rh-footer-brand img{height:18px;width:auto;filter:invert(1)}
.rh-footer ul{display:flex;flex-wrap:wrap;gap:2px 22px}
.rh-footer li a{display:inline-flex;align-items:center;min-height:40px;font-size:13px;color:rgba(255,255,255,.62)}
.rh-footer li a:hover{color:#fff}
.rh-footer :focus-visible{outline-color:#fff}

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

.rh-benchmark-feature{display:grid;grid-template-columns:120px minmax(0,1fr) auto;align-items:center;gap:24px;margin-top:24px;padding:24px 0 0;border-top:1px solid var(--line)}.rh-benchmark-feature strong{display:block;font-size:21px;line-height:1.3;letter-spacing:-.02em}.rh-benchmark-feature p{margin-top:6px;color:var(--muted);font-size:15px;line-height:1.55}.rh-benchmark-feature:hover strong{text-decoration:underline;text-underline-offset:4px}@media(max-width:600px){.rh-benchmark-feature{grid-template-columns:minmax(0,1fr);gap:12px}.rh-benchmark-feature strong{font-size:20px}}