:root{
  --hfr-black:#0a0a0a;
  --hfr-cream:#f3eee5;
  --hfr-paper:#fbf8f2;
  --hfr-copper:#b97452;
  --hfr-ink:#181818;
  --hfr-muted:#6b645e;
  --hfr-line:#d9d0c5;
}
.hfr-free-guide-page .entry-title,
.hfr-free-guide-page .page-title{display:none!important}
.hfr-free-guide-page .entry-content,
.hfr-free-guide-page .site-main{max-width:none!important;padding-left:0!important;padding-right:0!important}
.hfr-free-guide-page .entry-content > *{max-width:none!important;margin-left:0!important;margin-right:0!important}
.hfr-free-guide-page{background:var(--hfr-paper)}
.hfr-free-guide-page .entry-content{background:var(--hfr-paper);color:var(--hfr-ink);font-family:Georgia,"Times New Roman",serif;line-height:1.68}
.hfr-free-guide-page .entry-content *{box-sizing:border-box}
.hfr-guide-hero{background:var(--hfr-black);color:#fff;padding:26px 28px 78px}
.hfr-topline{max-width:1100px;margin:0 auto;display:flex;justify-content:space-between;gap:20px;font:600 11px/1.2 Arial,sans-serif;letter-spacing:.22em;color:#d9d0c8}
.hfr-hero-inner{max-width:1100px;margin:72px auto 0}
.hfr-eyebrow,.hfr-section-kicker{font:700 12px/1.2 Arial,sans-serif;letter-spacing:.26em;color:var(--hfr-copper);text-transform:uppercase}
.hfr-guide-hero h1{font-size:clamp(58px,9vw,118px);line-height:.82;margin:18px 0 26px;letter-spacing:-.045em;font-weight:700;color:#fff}
.hfr-guide-hero h1 em{color:var(--hfr-copper);font-weight:500}
.hfr-accent-line{height:3px;width:72px;background:var(--hfr-copper);margin:24px 0}
.hfr-hero-sub{font-size:clamp(20px,2.8vw,32px);max-width:760px;margin:0 0 28px;color:#fff}
.hfr-hero-meta{font:500 12px/1.6 Arial,sans-serif;color:#cfc7bf}
.hfr-guide-nav{position:sticky;top:0;z-index:50;background:rgba(10,10,10,.96);padding:13px 18px;display:flex;gap:10px;overflow-x:auto;border-top:1px solid #222;border-bottom:1px solid #222}
.hfr-guide-nav a{white-space:nowrap;color:#fff!important;text-decoration:none!important;font:700 12px/1 Arial,sans-serif;letter-spacing:.06em;padding:10px 13px;border:1px solid #333;border-radius:999px}
.hfr-guide-nav a:hover{border-color:var(--hfr-copper)}
.hfr-guide-content{max-width:1020px!important;margin:0 auto!important;padding-left:26px!important;padding-right:26px!important}
.hfr-legal,.hfr-guide-section,.hfr-quick-ref{padding-top:74px!important;padding-bottom:74px!important;border-bottom:1px solid var(--hfr-line)}
.hfr-legal{font-family:Arial,sans-serif;font-size:15px}
.hfr-guide-content h2{font-size:clamp(34px,5vw,58px);line-height:1.06;margin:10px 0 28px}
.hfr-guide-content h3{font-size:24px;line-height:1.2;margin:34px 0 10px}
.hfr-section-body p{font-size:18px;margin:0 0 20px}
.hfr-small-note{font:700 12px/1.5 Arial,sans-serif;text-transform:uppercase;letter-spacing:.04em;color:var(--hfr-muted)}
.hfr-free-guide-page blockquote{margin:34px 0;padding:26px 30px;background:var(--hfr-black);color:#fff;border:0;font-size:22px;line-height:1.45;font-style:normal}
.hfr-medical-note{margin:30px 0;padding:20px 24px;background:#fff8ef;border:1px solid var(--hfr-line);border-left:4px solid var(--hfr-copper);font:600 14px/1.65 Arial,sans-serif}
.hfr-legal-links{font-size:13px}
.hfr-ref-dark{background:var(--hfr-black);color:#fff;padding:36px;border-radius:2px;margin-bottom:26px}
.hfr-ref-dark h2{margin-bottom:14px;color:#fff}
.hfr-ref-dark p{font-family:Arial,sans-serif;color:#ddd}
.hfr-badges{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-top:24px;font:600 13px/1.4 Arial,sans-serif}
.hfr-badges b,.hfr-accordion summary i{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border:1px solid var(--hfr-copper);border-radius:999px;color:var(--hfr-copper);font:700 11px Arial,sans-serif;margin-right:5px;font-style:normal}
.hfr-callout{background:#fff;border:1px solid var(--hfr-line);border-left:4px solid var(--hfr-copper);padding:26px 28px;margin:28px 0}
.hfr-callout h3{margin-top:0}
.hfr-ref-heading{font-size:34px!important;margin-top:56px!important}
.hfr-ref-sub{font:600 13px/1.5 Arial,sans-serif;text-transform:uppercase;letter-spacing:.08em;color:var(--hfr-muted)}
.hfr-table-wrap{overflow-x:auto}
.hfr-ref-table{width:100%;border-collapse:collapse;background:#fff;font-family:Arial,sans-serif;font-size:15px}
.hfr-ref-table th,.hfr-ref-table td{padding:16px 18px;border:1px solid var(--hfr-line);vertical-align:top;text-align:left}
.hfr-ref-table th{width:160px;background:#f7f1e8}
.hfr-card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:18px 0}
.hfr-ref-card{background:#fff;border:1px solid var(--hfr-line);padding:22px}
.hfr-ref-card h4{margin:0;font-size:20px}
.hfr-ref-card p{margin:10px 0 0;font-family:Arial,sans-serif;font-size:15px}
.hfr-mini-columns{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin-top:20px;padding-top:18px;border-top:1px solid var(--hfr-line)}
.hfr-mini-columns h4{font:700 12px/1.4 Arial,sans-serif;text-transform:uppercase;letter-spacing:.05em;color:var(--hfr-copper)}
.hfr-mini-columns p{font-family:Arial,sans-serif}
.hfr-accordion-list{border:1px solid var(--hfr-line);background:#fff}
.hfr-accordion{border-bottom:1px solid var(--hfr-line)}
.hfr-accordion:last-child{border-bottom:0}
.hfr-accordion summary{cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:18px 20px;font-weight:700;font-size:18px}
.hfr-accordion summary::-webkit-details-marker{display:none}
.hfr-accordion summary b{font:400 24px Arial,sans-serif;color:var(--hfr-copper)}
.hfr-accordion[open] summary b{transform:rotate(45deg)}
.hfr-accordion>div{padding:0 20px 20px;font-family:Arial,sans-serif;font-size:15px}
.hfr-dark-small{margin-top:26px}
.hfr-dark-small h3{margin-top:0;color:#fff}
.hfr-paid-cta{margin-top:36px!important;margin-bottom:36px!important;padding:30px 32px!important;background:var(--hfr-black);color:#fff;display:flex;align-items:center;justify-content:space-between;gap:24px}
.hfr-paid-cta h3{margin:0 0 8px!important;font-size:24px!important;color:#fff}
.hfr-paid-cta p{margin:0;font-family:Arial,sans-serif;color:#ddd}
.hfr-cta-btn{display:inline-block;flex:0 0 auto;background:var(--hfr-copper);color:#fff!important;text-decoration:none!important;padding:13px 18px;font:700 13px/1 Arial,sans-serif;border-radius:2px}
.hfr-ending{font-size:19px}
.hfr-follow-box{margin-top:34px;padding:28px;background:var(--hfr-black);color:#fff}
.hfr-follow-box p{color:#fff}
.hfr-social-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.hfr-social-btn{display:inline-block;padding:11px 14px;border:1px solid #4a4a4a;color:#fff!important;text-decoration:none!important;font:700 12px/1 Arial,sans-serif;letter-spacing:.03em}
.hfr-social-btn:hover{border-color:var(--hfr-copper)}
.hfr-hide-empty-link[href="#"]{display:none!important}

@media(max-width:760px){
  .hfr-guide-hero{padding:22px 18px 52px}
  .hfr-topline{font-size:9px;letter-spacing:.13em}
  .hfr-hero-inner{margin-top:54px}
  .hfr-guide-content{padding-left:18px!important;padding-right:18px!important}
  .hfr-legal,.hfr-guide-section,.hfr-quick-ref{padding-top:52px!important;padding-bottom:52px!important}
  .hfr-section-body p{font-size:17px}
  .hfr-free-guide-page blockquote{font-size:19px;padding:22px}
  .hfr-card-grid,.hfr-mini-columns,.hfr-badges{grid-template-columns:1fr}
  .hfr-ref-dark{padding:26px 22px}
  .hfr-ref-table th{width:120px}
  .hfr-paid-cta{display:block}
  .hfr-cta-btn{margin-top:18px}
}

.hfr-study-links{
  margin:10px 0 24px!important;
  font:600 13px/1.55 Arial,sans-serif!important;
  color:var(--hfr-muted);
}
.hfr-study-links a{
  color:var(--hfr-copper)!important;
  text-decoration:underline!important;
  text-underline-offset:2px;
}
.hfr-motility-focus h4{
  margin:28px 0 7px;
  font-size:20px;
}
.hfr-next-step{
  margin-top:32px;
}

/* v1.3 free-guide email gate */
.hfr-free-guide-gate-page .entry-title,
.hfr-free-guide-gate-page .page-title{display:none!important;}
.hfr-free-guide-gate-page .site-main,
.hfr-free-guide-gate-page .entry-content{max-width:100%!important;}
.hfr-gate-intro{
  max-width:760px;
  margin:48px auto 80px!important;
  padding:42px!important;
  border:1px solid var(--hfr-line);
  background:var(--hfr-cream);
}
.hfr-gate-intro h1{margin-bottom:10px!important;}
.hfr-gate-lede{font-size:21px!important;line-height:1.45!important;}
.hfr-gate-form{margin-top:28px;}
.hfr-free-guide-form label{display:block;margin:0 0 8px;font-family:Arial,sans-serif;}
.hfr-free-guide-form input[type="email"]{
  width:100%;
  max-width:520px;
  padding:14px 15px;
  border:1px solid #aaa;
  border-radius:3px;
  font-size:16px;
  margin-bottom:16px;
}
.hfr-optin{font-size:14px;line-height:1.45;display:flex!important;gap:9px;align-items:flex-start;max-width:560px;margin:2px 0 20px!important;}
.hfr-optin input{margin-top:3px;}
.hfr-gate-privacy,.hfr-gate-help{font-size:13px!important;color:var(--hfr-muted)!important;max-width:600px;}
.hfr-gate-message,.hfr-gate-error{padding:14px 16px;margin:0 0 20px;border-left:3px solid var(--hfr-copper);background:#f7f1e9;}
.hfr-gate-error{border-left-color:#8f2f27;}
.hfr-gate-form #loginform{max-width:520px;}
.hfr-gate-form #loginform label{display:block;margin-bottom:6px;}
.hfr-gate-form #loginform input[type="text"],
.hfr-gate-form #loginform input[type="password"]{width:100%;padding:12px 13px;}
.hfr-gate-form #wp-submit{background:#1b1b1b;color:#fff;border:0;padding:12px 18px;cursor:pointer;}
.hfr-mcas-cta{margin-top:32px!important;}
@media(max-width:700px){.hfr-gate-intro{margin:20px 14px 50px!important;padding:26px 20px!important;}}

.hfr-social-links{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:12px;
  flex-wrap:wrap;
}
.hfr-social-btn{
  width:42px!important;
  height:42px!important;
  min-width:42px!important;
  padding:0!important;
  display:inline-flex!important;
  align-items:center!important;
  justify-content:center!important;
  border-radius:50%!important;
  text-decoration:none!important;
}
.hfr-social-btn svg{
  width:20px;
  height:20px;
  fill:currentColor;
  display:block;
}
.hfr-social-btn:hover{
  transform:translateY(-1px);
}

/* v1.6.1 Mast Cell Support Library bridges */
.hfr-library-bridge-wrap{padding-top:18px!important;padding-bottom:18px!important}
.hfr-library-bridge{margin-top:18px!important;margin-bottom:18px!important}
.hfr-cta-button{display:inline-block;flex:0 0 auto;background:var(--hfr-copper);color:#fff!important;text-decoration:none!important;padding:13px 18px;font:700 13px/1 Arial,sans-serif;border-radius:2px}
@media(max-width:760px){.hfr-cta-button{margin-top:18px}.hfr-library-bridge-wrap{padding-top:8px!important;padding-bottom:8px!important}}

/* v1.6.2: Mast Cell Support Library promo breathing room on mobile. */
@media(max-width:700px){
  .hfr-paid-cta{padding:24px 20px!important;box-sizing:border-box;}
}

/* v1.6.4 — Concept A editorial alignment with Guides & Research. */
.hfr-free-guide-page,
.hfr-free-guide-gate-page{
 --hfr-black:#0E2C4C;
 --hfr-cream:#F7F3EA;
 --hfr-paper:#FFFDF9;
 --hfr-copper:#CD943C;
 --hfr-ink:#0E2C4C;
 --hfr-muted:#5C7188;
 --hfr-line:#D8E0E9;
 --hfr-sage:#A1A786;
 --hfr-pale-blue:#B3C0D3;
}
.hfr-free-guide-page{background:var(--hfr-paper)!important}
.hfr-free-guide-page .entry-content{background:var(--hfr-paper)!important;color:var(--hfr-ink)!important}
.hfr-guide-hero{background:linear-gradient(180deg,#FFFDF9 0%,#F8F4EC 100%)!important;color:var(--hfr-ink)!important;padding:28px 28px 58px!important;border-bottom:1px solid rgba(179,192,211,.55)!important}
.hfr-topline{color:var(--hfr-muted)!important}
.hfr-hero-inner{max-width:900px!important;margin:46px auto 0!important;text-align:center!important}
.hfr-eyebrow,.hfr-section-kicker{color:var(--hfr-sage)!important}
.hfr-guide-hero h1{font-size:clamp(50px,7.2vw,88px)!important;line-height:.94!important;margin:14px 0 20px!important;letter-spacing:-.04em!important;color:var(--hfr-ink)!important}
.hfr-guide-hero h1 em{color:var(--hfr-copper)!important;font-weight:500!important}
.hfr-accent-line{height:1px!important;width:78px!important;background:var(--hfr-copper)!important;margin:20px auto!important}
.hfr-hero-sub{max-width:720px!important;margin:0 auto 22px!important;color:var(--hfr-ink)!important;font-size:clamp(19px,2.3vw,27px)!important}
.hfr-hero-meta{color:var(--hfr-muted)!important}
.hfr-guide-nav{background:rgba(14,44,76,.98)!important;border:0!important;border-bottom:1px solid rgba(255,255,255,.1)!important;box-shadow:0 4px 14px rgba(14,44,76,.08)!important}
.hfr-guide-nav a{color:#fff!important;border-color:rgba(255,255,255,.28)!important}
.hfr-guide-nav a:hover,.hfr-guide-nav a:focus{border-color:var(--hfr-copper)!important;background:rgba(205,148,60,.12)!important}
.hfr-guide-content{max-width:980px!important}
.hfr-legal,.hfr-guide-section,.hfr-quick-ref{padding-top:58px!important;padding-bottom:58px!important;border-bottom-color:var(--hfr-line)!important}
.hfr-guide-content h2,.hfr-guide-content h3,.hfr-ref-card h4{color:var(--hfr-ink)!important}
.hfr-free-guide-page blockquote{background:rgba(161,167,134,.12)!important;color:var(--hfr-ink)!important;border-left:4px solid var(--hfr-sage)!important;border-radius:12px!important}
.hfr-medical-note,.hfr-callout{background:#fff!important;border-color:var(--hfr-line)!important;border-left-color:var(--hfr-sage)!important;border-radius:12px!important;box-shadow:0 8px 22px rgba(14,44,76,.035)!important}
.hfr-ref-dark,.hfr-paid-cta,.hfr-follow-box{background:var(--hfr-black)!important;color:#fff!important;border-radius:14px!important}
.hfr-ref-dark h2,.hfr-ref-dark h3,.hfr-paid-cta h3,.hfr-follow-box h3{color:#fff!important}
.hfr-ref-dark p,.hfr-paid-cta p,.hfr-follow-box p{color:rgba(255,255,255,.84)!important}
.hfr-badges b,.hfr-accordion summary i{border-color:var(--hfr-copper)!important;color:var(--hfr-copper)!important}
.hfr-ref-table,.hfr-ref-card,.hfr-accordion-list{background:#fff!important}
.hfr-ref-table th{background:#F7F3EA!important;color:var(--hfr-ink)!important}
.hfr-ref-table th,.hfr-ref-table td,.hfr-ref-card,.hfr-accordion-list,.hfr-accordion{border-color:var(--hfr-line)!important}
.hfr-ref-card{border-radius:12px!important;box-shadow:0 7px 20px rgba(14,44,76,.03)!important}
.hfr-mini-columns h4,.hfr-study-links a{color:var(--hfr-copper)!important}
.hfr-cta-btn,.hfr-cta-button,.hfr-free-guide-form button,.hfr-free-guide-form input[type=submit]{background:var(--hfr-black)!important;color:#fff!important;border:1px solid var(--hfr-black)!important;border-radius:9px!important}
.hfr-cta-btn:hover,.hfr-cta-button:hover,.hfr-free-guide-form button:hover,.hfr-free-guide-form input[type=submit]:hover{background:var(--hfr-copper)!important;color:var(--hfr-black)!important;border-color:var(--hfr-copper)!important}
.hfr-social-btn{border-color:rgba(255,255,255,.32)!important;color:#fff!important}
.hfr-social-btn:hover{border-color:var(--hfr-copper)!important;color:var(--hfr-copper)!important}
.hfr-gate-intro{max-width:760px!important;margin:38px auto 68px!important;padding:36px!important;border:1px solid var(--hfr-line)!important;border-top:3px solid var(--hfr-copper)!important;border-radius:16px!important;background:#fff!important;box-shadow:0 12px 30px rgba(14,44,76,.055)!important;color:var(--hfr-ink)!important}
.hfr-gate-intro h1,.hfr-gate-intro h2,.hfr-gate-intro h3{color:var(--hfr-ink)!important}
.hfr-free-guide-form input[type=email],.hfr-gate-form #loginform input[type=text],.hfr-gate-form #loginform input[type=password]{border:1px solid var(--hfr-pale-blue)!important;border-radius:9px!important;background:#fff!important;color:var(--hfr-ink)!important}
.hfr-gate-form #wp-submit{background:var(--hfr-black)!important;color:#fff!important;border:1px solid var(--hfr-black)!important;border-radius:9px!important}
.hfr-gate-form #wp-submit:hover{background:var(--hfr-copper)!important;color:var(--hfr-black)!important;border-color:var(--hfr-copper)!important}
.hfr-gate-message,.hfr-gate-error{background:#F7F3EA!important;border-left-color:var(--hfr-sage)!important}
@media(max-width:760px){
 .hfr-guide-hero{padding:20px 18px 42px!important}
 .hfr-hero-inner{margin-top:34px!important}
 .hfr-legal,.hfr-guide-section,.hfr-quick-ref{padding-top:44px!important;padding-bottom:44px!important}
 .hfr-gate-intro{margin:18px 14px 44px!important;padding:24px 20px!important}
}