/* protidepeptides.com — field-notebook theme (written from scratch for this build).
   Layout: strip + slim header + asymmetric hero + card rails + sticky reading rail.
   Palette: forest ink, bone paper, brass accent. Ad units use their own gold flow. */

:root{
  --ink:#15241d;
  --ink-soft:#5c6b60;
  --ink-faint:#8a958b;
  --paper:#ffffff;
  --paper-warm:#f7f4ea;
  --paper-deep:#efeadd;
  --line:#e2ddcd;
  --line-strong:#cfc7b2;
  --brass:#b0801f;
  --brass-deep:#7d5a12;
  --brass-bright:#f2c657;
  --jade:#1f6b54;
  --jade-soft:#e8f1ec;
  --radius:2px;
  --max:1120px;
  --serif:"Iowan Old Style","Palatino Linotype",Palatino,Georgia,"Times New Roman",serif;
  --sans:"Segoe UI",-apple-system,BlinkMacSystemFont,Roboto,Arial,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:var(--sans);font-size:16.5px;line-height:1.78;color:var(--ink);
  background:var(--paper);-webkit-font-smoothing:antialiased}
img,svg{max-width:100%}
a{color:var(--jade);text-decoration:none;border-bottom:1px solid rgba(31,107,84,.25)}
a:hover{color:var(--brass-deep);border-bottom-color:var(--brass)}
h1,h2,h3,h4{font-family:var(--serif);font-weight:600;line-height:1.25;letter-spacing:-.01em;margin:0 0 14px}
h1{font-size:2.28rem}
h2{font-size:1.52rem;margin-top:0}
h3{font-size:1.12rem}
p{margin:0 0 16px}
ul,ol{margin:0 0 18px;padding-left:22px}
li{margin-bottom:7px}
b,strong{font-weight:650}
small{font-size:.86em}
hr{border:none;border-top:1px solid var(--line);margin:30px 0}

/* ---------- top strip + header ---------- */
.topline{background:var(--ink);color:#e9e4d3;font-family:var(--mono);font-size:11px;
  letter-spacing:.11em;text-transform:uppercase;padding:7px 20px;display:flex;
  justify-content:center;gap:18px;flex-wrap:wrap}
.topline span{opacity:.82}
.topline i{font-style:normal;color:var(--brass-bright)}

.hdr{position:sticky;top:0;z-index:80;background:rgba(255,255,255,.96);
  backdrop-filter:saturate(140%) blur(6px);border-bottom:1px solid var(--line)}
.hdr-in{max-width:var(--max);margin:0 auto;padding:13px 20px;display:flex;align-items:center;gap:22px}
.logo{display:flex;align-items:center;gap:11px;border:none;color:var(--ink);flex-shrink:0}
.logo:hover{color:var(--ink);border:none}
.logo-tile{width:40px;height:40px;display:grid;place-items:center;border-radius:2px;
  background:linear-gradient(145deg,#20362d,#0f1d17);color:#f4e4bc;font-family:var(--serif);
  font-size:19px;letter-spacing:.5px;box-shadow:inset 0 0 0 1px rgba(242,198,87,.45)}
.logo-txt{display:flex;flex-direction:column;line-height:1.1;font-family:var(--serif);font-size:18px}
.logo-txt em{font-style:normal;font-family:var(--mono);font-size:9.5px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--ink-faint);margin-top:4px}

.mainnav{margin-left:auto;display:flex;gap:4px;flex-wrap:wrap}
.mainnav a{padding:7px 11px;font-size:13.6px;font-weight:600;color:var(--ink-soft);border:none;
  border-radius:2px;letter-spacing:.01em}
.mainnav a:hover{background:var(--paper-warm);color:var(--ink)}
.mainnav a.on{color:var(--ink);background:var(--paper-warm);box-shadow:inset 0 -2px 0 var(--brass)}
.nav-toggle{display:none;margin-left:auto;width:40px;height:36px;border:1px solid var(--line);
  background:var(--paper);border-radius:2px;cursor:pointer;padding:8px}
.nav-toggle span{display:block;height:2px;background:var(--ink);margin:3px 0}

/* ---------- shell ---------- */
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}
main.page{padding:26px 0 54px;min-height:60vh}
.crumbs{font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;
  color:var(--ink-faint);margin-bottom:18px;display:flex;gap:8px;flex-wrap:wrap}
.crumbs a{color:var(--ink-soft);border:none}
.crumbs span{opacity:.5}

/* ---------- hero ---------- */
.hero{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(0,.85fr);gap:34px;
  padding:34px 0 30px;border-bottom:1px solid var(--line)}
.eyebrow{font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--brass-deep);margin:0 0 14px}
.hero h1{font-size:2.5rem;margin-bottom:18px}
.hero .lede{font-size:17.5px;color:#3c4a41}
.hero-side{position:relative;background:var(--paper-warm);border:1px solid var(--line);
  padding:24px 22px 20px;border-radius:2px}
.hero-side:before{content:"";position:absolute;inset:6px;border:1px solid var(--line-strong);
  pointer-events:none;opacity:.55}
.stamp{display:inline-block;transform:rotate(-3deg);border:2px solid var(--brass);color:var(--brass-deep);
  font-family:var(--mono);font-size:10.5px;letter-spacing:.18em;padding:5px 9px;margin-bottom:14px}
.hero-side h3{font-size:1.05rem;margin-bottom:6px}
.hero-side p{font-size:13.6px;color:var(--ink-soft);margin-bottom:10px}
.avatar{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar i{width:44px;height:44px;border-radius:50%;background:var(--jade);color:#f6f1de;
  display:grid;place-items:center;font-family:var(--serif);font-size:16px;font-style:normal}
.avatar b{display:block;font-size:14px}
.avatar small{color:var(--ink-faint);font-size:11.5px;letter-spacing:.04em}

.chips{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 4px}
.chip{font-family:var(--mono);font-size:11.5px;letter-spacing:.04em;padding:5px 10px;
  border:1px solid var(--line-strong);border-radius:2px;color:var(--ink-soft);background:var(--paper)}
.chip:hover{border-color:var(--brass);color:var(--brass-deep);background:#fdf8ea}

.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--line);
  border-top:none;margin-bottom:38px}
.stat{padding:16px 18px;border-right:1px solid var(--line)}
.stat:last-child{border-right:none}
.stat b{display:block;font-family:var(--serif);font-size:1.5rem;color:var(--jade)}
.stat span{font-family:var(--mono);font-size:10px;letter-spacing:.13em;text-transform:uppercase;
  color:var(--ink-faint)}

/* ---------- sections ---------- */
.sec{margin:0 0 42px;padding-top:8px}
.sec-head{display:flex;align-items:baseline;gap:14px;border-bottom:1px solid var(--line);
  padding-bottom:10px;margin-bottom:20px}
.sec-head h2{margin:0;font-size:1.42rem}
.sec-head .num{font-family:var(--mono);font-size:11px;color:var(--brass);letter-spacing:.1em}
.sec-head .more{margin-left:auto;font-size:12.5px;font-family:var(--mono);letter-spacing:.06em;
  text-transform:uppercase;border:none}
.sec p:last-child{margin-bottom:0}

.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:6px 0 22px}
.card{display:block;border:1px solid var(--line);background:var(--paper);padding:18px 18px 16px;
  border-radius:2px;color:var(--ink);position:relative;transition:transform .16s,border-color .16s,box-shadow .16s}
.card:hover{border-color:var(--line-strong);transform:translateY(-2px);
  box-shadow:0 10px 24px rgba(21,36,29,.07);color:var(--ink)}
.card .k{font-family:var(--mono);font-size:10px;letter-spacing:.13em;text-transform:uppercase;
  color:var(--brass-deep);display:block;margin-bottom:9px}
.card h3{font-size:1.04rem;margin-bottom:7px}
.card p{font-size:13.6px;color:var(--ink-soft);margin:0}
.card:after{content:"→";position:absolute;right:16px;bottom:12px;font-family:var(--mono);
  font-size:12px;color:var(--brass);opacity:0;transition:opacity .16s}
.card:hover:after{opacity:1}

.list-note{background:var(--paper-warm);border:1px solid var(--line);border-left:3px solid var(--jade);
  padding:16px 18px;margin:0 0 20px}
.list-note ul{margin:0;padding-left:18px}
.list-note li{font-size:14px;color:#3f4d44}

table{width:100%;border-collapse:collapse;margin:6px 0 22px;font-size:14px}
th{text-align:left;font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;
  color:var(--ink-faint);border-bottom:1px solid var(--line-strong);padding:9px 10px;font-weight:600}
td{padding:10px;border-bottom:1px solid var(--line);vertical-align:top;color:var(--ink-soft)}
td:first-child{color:var(--ink);font-weight:600}

.quote{border:none;margin:24px 0;padding:0 0 0 18px;border-left:2px solid var(--brass);
  font-family:var(--serif);font-size:1.08rem;color:#3c4a41;font-style:italic}

/* ---------- article layout ---------- */
.art-head{border-bottom:1px solid var(--line);padding-bottom:20px;margin-bottom:26px}
.art-head h1{font-size:2.12rem;margin-bottom:12px}
.art-head .lede{font-size:17px;color:#3f4d44;max-width:66ch}
.meta-row{display:flex;flex-wrap:wrap;gap:16px;font-family:var(--mono);font-size:10.5px;
  letter-spacing:.09em;text-transform:uppercase;color:var(--ink-faint);margin-top:14px}
.meta-row b{color:var(--ink-soft);font-weight:600}

.art-grid{display:grid;grid-template-columns:230px minmax(0,1fr);gap:40px;align-items:start}
.rail{position:sticky;top:86px;border-left:2px solid var(--line);padding-left:16px}
.rail h4{font-family:var(--mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--ink-faint);margin-bottom:10px}
.rail a{display:block;font-size:12.8px;color:var(--ink-soft);border:none;padding:4px 0;line-height:1.4}
.rail a:hover{color:var(--brass-deep)}
.rail .rail-box{margin-top:22px;padding-top:14px;border-top:1px solid var(--line);font-size:12.5px;color:var(--ink-faint)}

.body-col{min-width:0}
.body-col h2{margin-top:34px;padding-top:4px}
.body-col h2:first-of-type{margin-top:0}
.body-col ul.zr{list-style:none;padding:0;margin:0 0 20px}
.body-col ul.zr li{font-size:14.2px;padding:7px 0 7px 20px;border-bottom:1px dotted var(--line);
  position:relative;color:#3f4d44}
.body-col ul.zr li:before{content:"·";position:absolute;left:4px;color:var(--brass);font-size:22px;line-height:1;top:4px}

.facts{border:1px solid var(--line);background:var(--paper-warm);padding:18px 20px;margin:0 0 26px}
.facts h4{margin:0 0 10px;font-family:var(--mono);font-size:10.5px;letter-spacing:.13em;
  text-transform:uppercase;color:var(--brass-deep)}
.facts dl{display:grid;grid-template-columns:132px 1fr;gap:6px 14px;margin:0;font-size:13.6px}
.facts dt{color:var(--ink-faint);font-family:var(--mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;padding-top:2px}
.facts dd{margin:0;color:#3f4d44}

.disclaimer{background:#f6f2e6;border:1px solid var(--line-strong);border-left:3px solid var(--brass);
  padding:14px 16px;font-size:13.4px;color:#4a554c;margin:26px 0}
.disclaimer b{color:var(--brass-deep)}

/* FAQ */
.faq details{border-bottom:1px solid var(--line);padding:2px 0}
.faq summary{cursor:pointer;list-style:none;padding:14px 30px 14px 0;font-family:var(--serif);
  font-size:1.03rem;position:relative;color:var(--ink)}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";position:absolute;right:4px;top:11px;font-family:var(--mono);
  color:var(--brass);font-size:18px}
.faq details[open] summary:after{content:"–"}
.faq details p{font-size:14.3px;color:#3f4d44;padding:0 30px 14px 0;margin:0}

/* related + sources */
.related{margin-top:40px;padding-top:22px;border-top:1px solid var(--line)}
.related h3{font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--ink-faint);margin-bottom:14px}
.related .card-grid{grid-template-columns:repeat(2,1fr);margin-bottom:0}
.sources{font-size:12.6px;color:var(--ink-soft);border-top:1px solid var(--line);padding-top:16px;margin-top:26px}
.sources h3{font-size:10.5px;font-family:var(--mono);letter-spacing:.14em;text-transform:uppercase;
  color:var(--ink-faint);margin-bottom:8px}
.sources ol{padding-left:18px;margin:0}
.sources li{margin-bottom:5px}

/* ad units (filled by site.js) */
.ad-slot{margin:30px 0;min-height:0}
.zr-ad-flow{position:relative;overflow:hidden;border-radius:2px;
  background:linear-gradient(100deg,#3a2c06,#7d5a12,#c99a22,#ffe08a,#c99a22,#7d5a12,#3a2c06);
  background-size:260% 100%;animation:zrgoldflow 7s linear infinite;
  box-shadow:0 6px 20px rgba(125,90,18,.22);color:#241a00}
.zr-ad-flow a{display:flex;align-items:center;gap:14px;padding:15px 18px;
  text-decoration:none;border:none;color:#241a00}
.zr-ad-flow .ad-eyebrow{font-family:var(--mono);font-size:9.5px;letter-spacing:.16em;
  text-transform:uppercase;background:rgba(255,255,255,.42);padding:4px 7px;border-radius:2px;flex-shrink:0}
.zr-ad-flow .ad-copy{font-size:14px;font-weight:650;line-height:1.35}
.zr-ad-flow .ad-cta{margin-left:auto;font-family:var(--mono);font-size:11px;letter-spacing:.08em;
  text-transform:uppercase;border-bottom:1px solid rgba(36,26,0,.55);white-space:nowrap;flex-shrink:0}
.zr-ad-flow:hover{box-shadow:0 8px 26px rgba(125,90,18,.32)}
#zr-adbar{position:fixed;left:0;right:0;bottom:0;z-index:9999;display:none;text-align:center;
  background:linear-gradient(90deg,#3d2f08,#8a6a1c,#d4a017,#ffe27a,#d4a017,#8a6a1c,#3d2f08);
  background-size:220% 100%;animation:zrgoldflow 6s linear infinite;
  box-shadow:0 -2px 14px rgba(0,0,0,.35);padding:11px 14px}
#zr-adbar a{color:#1f1600;font-weight:700;text-decoration:none;font-size:14px;letter-spacing:.02em;
  border:none;text-shadow:0 1px 0 rgba(255,240,170,.5)}
#zr-adbar a:hover{text-decoration:underline}
@keyframes zrgoldflow{0%{background-position:0% 50%}100%{background-position:200% 50%}}
@media (prefers-reduced-motion:reduce){.zr-ad-flow,#zr-adbar{animation:none}}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:#d8d2c0;margin-top:40px;padding:40px 0 22px;font-size:13.4px}
.site-footer .wrap{max-width:var(--max)}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:30px;padding-bottom:26px;
  border-bottom:1px solid rgba(255,255,255,.12)}
.foot-grid h4{color:#f2eddc;font-family:var(--mono);font-size:10px;letter-spacing:.15em;
  text-transform:uppercase;margin-bottom:12px}
.foot-grid a{display:block;color:#c3bda9;border:none;padding:3px 0;font-size:13.2px}
.foot-grid a:hover{color:var(--brass-bright)}
.foot-grid p{color:#a9a390;font-size:13px;line-height:1.65}
.foot-brand{font-family:var(--serif);font-size:19px;color:#f5f0df !important;margin-bottom:8px}
.foot-legal{padding-top:18px;font-size:11.8px;color:#918c7b;line-height:1.7}
.foot-legal b{color:#c9c3ae}

/* ---------- calculator ---------- */
.tool{display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid var(--line);margin:0 0 30px}
.tool-in{padding:22px}
.tool-out{background:var(--ink);color:#eee8d6;padding:22px}
.tool-out h3{color:#fff;font-size:1.05rem}
.field{margin-bottom:14px}
.field label{display:block;font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;
  text-transform:uppercase;color:var(--ink-faint);margin-bottom:5px}
.field input{width:100%;padding:10px 12px;border:1px solid var(--line-strong);border-radius:2px;
  font-size:15px;font-family:var(--mono);color:var(--ink);background:var(--paper)}
.field input:focus{outline:2px solid rgba(176,128,31,.25);border-color:var(--brass)}
.res-row{display:flex;justify-content:space-between;gap:12px;padding:9px 0;
  border-bottom:1px solid rgba(255,255,255,.14);font-size:13.6px}
.res-row span{color:#b9b2a0}
.res-row b{font-family:var(--mono);color:var(--brass-bright);font-weight:600}

/* ---------- vendor directory (vd-*) ---------- */
.vd-disclaimer{background:var(--paper-warm);border:1px solid var(--line);border-left:3px solid var(--brass);
  padding:14px 16px;font-size:13.4px;color:#3f4d44;margin:18px 0}
.vd-disclaimer p{margin:0}
.vd-disclaimer b{color:var(--brass-deep)}
.vd-tabs{display:flex;gap:8px;margin:22px 0 14px;flex-wrap:wrap}
.vd-tab{border:1px solid var(--line-strong);background:var(--paper);border-radius:2px;padding:8px 18px;
  font-size:13.5px;font-weight:650;color:var(--ink-soft);cursor:pointer}
.vd-tab.on{background:var(--ink);border-color:var(--ink);color:var(--brass-bright)}
.vd-search{position:relative;max-width:640px;margin:0 0 12px}
.vd-search input{width:100%;padding:12px 14px 12px 40px;border:none;border-bottom:2px solid var(--line);
  background:transparent;font-size:16px;outline:none}
.vd-search input:focus{border-bottom-color:var(--brass)}
.vd-search svg{position:absolute;left:8px;top:50%;transform:translateY(-50%);color:var(--ink-soft)}
.vd-chiprow{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin-bottom:10px}
.vd-chiprow .lbl{font-size:10.5px;font-weight:700;color:var(--ink-faint);text-transform:uppercase;
  letter-spacing:.06em;margin-right:4px}
.vd-chip{border:1px solid var(--line-strong);background:var(--paper);border-radius:2px;padding:5px 12px;
  font-size:12px;font-weight:650;color:var(--ink-soft);cursor:pointer}
.vd-chip.on{background:var(--ink);border-color:var(--ink);color:var(--brass-bright)}
.vd-chip.loc.on{background:var(--brass-deep);border-color:var(--brass-deep)}
.vd-count{font-size:11px;color:var(--ink-faint);text-transform:uppercase;letter-spacing:.1em;margin:10px 0 6px}
.vd-list{border:1px solid var(--line);overflow:hidden;background:var(--paper)}
.vd-cat{padding:8px 16px;background:var(--paper-deep);font-size:11px;font-weight:700;
  letter-spacing:.08em;text-transform:uppercase;color:var(--brass-deep)}
.vd-item{border-top:1px solid var(--line)}
.vd-row{display:flex;align-items:center;gap:12px;width:100%;padding:11px 16px;background:none;
  border:none;text-align:left;font:inherit;cursor:pointer}
.vd-row:hover{background:var(--paper-warm)}
.vd-arrow{color:var(--ink-faint);transition:transform .15s;flex-shrink:0}
.vd-item.open .vd-arrow{transform:rotate(90deg)}
.vd-name{flex:1;min-width:0;font-weight:600;color:var(--ink);font-size:14.5px}
.vd-name small{color:var(--ink-faint);font-weight:400;white-space:nowrap;font-size:12.5px}
.vd-sup{font-size:12px;color:var(--ink-faint);flex-shrink:0}
.vd-from{text-align:right;min-width:86px;flex-shrink:0}
.vd-from em{display:block;font-style:normal;font-size:9.5px;text-transform:uppercase;letter-spacing:.06em;color:var(--ink-faint)}
.vd-from b{font-size:15px}
.vd-detail{display:none;border-top:1px solid var(--line);background:var(--paper-warm);padding:12px 16px}
.vd-item.open .vd-detail{display:block}
.vd-detail table{width:100%;border-collapse:collapse;font-size:13px;margin:0;background:transparent}
.vd-detail th{text-align:left;font-size:10px;text-transform:uppercase;letter-spacing:.06em;
  color:var(--ink-faint);padding:6px 8px;border-bottom:1px solid var(--line);font-weight:700}
.vd-detail td{padding:7px 8px;border-bottom:1px solid var(--line);color:var(--ink-soft)}
.vd-detail tr:last-child td{border-bottom:none}
.vd-detail td.p{text-align:right;font-weight:700;color:var(--ink);white-space:nowrap}
.vd-detail .none{color:var(--ink-faint);font-size:13px;padding:8px 0}
.vd-vendor{border:1px solid var(--line);background:var(--paper);padding:16px 18px}
.vd-vendor h3{font-size:15.5px;margin-bottom:2px}
.vd-vendor .loc{font-size:11px;color:var(--brass-deep);font-weight:700;text-transform:uppercase;
  letter-spacing:.05em;margin-bottom:8px}
.vd-vendor p{font-size:13.2px;color:var(--ink-soft);margin-bottom:8px}
.vd-vendor .contact{font-size:13px;display:flex;flex-wrap:wrap;gap:10px;color:var(--ink-soft)}
.vd-tab.wa{display:inline-flex;align-items:center;gap:7px;color:#1f8a55;border-color:#8fc9a8;
  text-decoration:none;font-size:12.5px;padding:7px 12px;font-weight:700}
.vd-tab.wa:hover{background:#1f8a55;color:#fff}
.vd-vfoot{display:flex;align-items:center;justify-content:space-between;gap:10px;
  border-top:1px solid var(--line);margin-top:12px;padding-top:12px}
.vd-vfoot .vpl{font-size:12px;font-weight:600;color:var(--ink);border:none;white-space:nowrap}
.vd-vfoot .vpl:hover{color:var(--brass-deep)}
.vd-vfoot .vd-wa{display:inline-flex;align-items:center;gap:5px;font-size:12px;font-weight:700;
  color:#1f8a55;border:none;white-space:nowrap}
.vd-vfoot .vd-wa:hover{text-decoration:underline}

/* ---------- 404 ---------- */
.nf{text-align:center;padding:70px 0}
.nf h1{font-size:3rem;margin-bottom:10px;color:var(--jade)}

/* ---------- responsive ---------- */
@media(max-width:900px){
  .hero{grid-template-columns:1fr;gap:24px;padding-top:24px}
  .hero h1{font-size:2.05rem}
  .art-grid{grid-template-columns:1fr}
  .rail{position:static;border-left:none;border-top:1px solid var(--line);padding:16px 0 0;order:2}
  .rail a{display:inline-block;margin-right:12px}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(2){border-right:none}
  .tool{grid-template-columns:1fr}
}
@media(max-width:700px){
  body{font-size:16px}
  .hdr-in{padding:10px 16px;gap:10px}
  .logo-txt{font-size:16px}
  .nav-toggle{display:block}
  .mainnav{display:none;position:absolute;left:0;right:0;top:100%;background:var(--paper);
    border-bottom:1px solid var(--line);flex-direction:column;padding:10px 16px;gap:0}
  .mainnav.open{display:flex}
  .mainnav a{padding:11px 4px;border-bottom:1px solid var(--line)}
  .mainnav a.on{box-shadow:none;background:none;color:var(--brass-deep)}
  .hero h1{font-size:1.78rem}
  .art-head h1{font-size:1.62rem}
  h2{font-size:1.3rem}
  .card-grid,.related .card-grid{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr}
  .stat{border-right:none;border-bottom:1px solid var(--line)}
  .stat:last-child{border-bottom:none}
  .foot-grid{grid-template-columns:1fr;gap:20px}
  .facts dl{grid-template-columns:1fr;gap:2px 0}
  .facts dt{margin-top:8px}
  .zr-ad-flow a{flex-wrap:wrap;gap:8px}
  .zr-ad-flow .ad-cta{margin-left:0}
}