:root{
  --paper:#EDF0F1;
  --paper-2:#E1E7E8;
  --ink:#1B2426;
  --teal:#2E6E6B;
  --teal-light:#6B9C97;
  --brick:#B54B3A;
  --brick-deep:#953C2F;
  --graphite:#5C6668;
  --line:#D3DBDA;

  --display:"Zilla Slab", serif;
  --body:"Figtree", -apple-system, sans-serif;
  --mono:"Roboto Mono", monospace;
  --maxw:1160px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{margin:0;font-family:var(--body);color:var(--ink);background:var(--paper);-webkit-font-smoothing:antialiased;}
img,svg{display:block;max-width:100%;}
a{color:inherit;}
p{margin:0;line-height:1.6;}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px;}
h1,h2,h3{font-family:var(--display);font-weight:700;margin:0;letter-spacing:-.01em;}
.eyebrow{
  font-family:var(--mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;
  color:var(--teal);display:flex;align-items:center;gap:10px;
}
.eyebrow::before{content:"";width:20px;height:1px;background:var(--brick);}
:focus-visible{outline:2px solid var(--brick-deep);outline-offset:3px;}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;}
}

/* ---- NAV ---- */
header{position:sticky;top:0;z-index:40;background:rgba(237,240,241,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);}
nav.wrap{display:flex;align-items:center;justify-content:space-between;height:72px;}
.logo{font-family:var(--display);font-weight:700;font-size:21px;display:flex;align-items:center;gap:8px;}
.logo .mark{width:9px;height:9px;border-radius:50%;background:var(--brick);}
.navlinks{display:none;list-style:none;margin:0;padding:0;gap:32px;}
@media(min-width:860px){.navlinks{display:flex;}}
.navlinks a{font-size:14px;font-weight:600;text-decoration:none;color:var(--ink);border-bottom:1px solid transparent;padding-bottom:4px;}
.navlinks a:hover{border-color:var(--brick);}
.btn{display:inline-flex;align-items:center;gap:8px;font-family:var(--body);font-weight:700;font-size:14.5px;
  padding:13px 22px;border-radius:2px;text-decoration:none;cursor:pointer;border:1px solid transparent;transition:transform .15s ease, background .15s ease;}
.btn:hover{transform:translateY(-1px);}
.btn-primary{background:var(--teal);color:#fff;}
.btn-primary:hover{background:#245551;}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:var(--paper);}
.navcta{display:none;}
@media(min-width:860px){.navcta{display:inline-flex;}}

/* ---- HERO ---- */
.hero{padding:60px 0 56px;}
.hero-grid{display:grid;grid-template-columns:1fr;gap:52px;align-items:center;}
@media(min-width:920px){.hero-grid{grid-template-columns:1.05fr .95fr;}}
.hero h1{font-size:clamp(32px,4.8vw,50px);line-height:1.08;margin:18px 0 22px;}
.hero h1 em{font-style:italic;color:var(--brick-deep);}
.hero p.lede{font-size:17px;color:var(--graphite);max-width:48ch;margin-bottom:30px;}
.hero-ctas{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px;}
.hero-note{font-family:var(--mono);font-size:12px;color:var(--graphite);display:flex;flex-wrap:wrap;gap:8px;align-items:center;}
.hero-note .sep{color:var(--line);}

/* supplement facts card */
.facts-card{background:#fff;border:1px solid var(--ink);padding:20px 22px;font-family:var(--mono);max-width:360px;}
.facts-title{font-family:var(--display);font-weight:700;font-size:26px;}
.facts-sub{font-size:11.5px;color:var(--graphite);margin-top:2px;}
.facts-thickrule{height:6px;background:var(--ink);margin:8px 0 6px;}
.facts-rule{height:1px;background:var(--ink);margin:5px 0;}
.facts-row{display:flex;justify-content:space-between;font-size:13.5px;padding:3px 0;}
.facts-row em{font-style:normal;color:var(--graphite);}
.facts-bold{font-weight:700;}
.facts-indent span:first-child{padding-left:14px;}
.facts-indent2 span:first-child{padding-left:28px;font-size:12.5px;}
.facts-foot{font-size:10.5px;color:var(--graphite);margin-top:8px;line-height:1.5;}
.facts-ingredients{margin-top:6px;}

/* ---- TRUST STRIP ---- */
.trust{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:20px 0;}
.trust .wrap{display:grid;grid-template-columns:repeat(2,1fr);gap:14px 26px;}
@media(min-width:760px){.trust .wrap{grid-template-columns:repeat(4,1fr);}}
.trust-item{font-family:var(--mono);font-size:12px;color:var(--ink);}

/* ---- SECTIONS ---- */
section{padding:82px 0;}
.sec-head{max-width:660px;margin-bottom:48px;}
.sec-head h2{font-size:clamp(26px,3.4vw,36px);margin:16px 0 14px;line-height:1.1;}
.sec-head p{color:var(--graphite);font-size:16px;}

/* ---- MYTH VS REALITY ---- */
.myth-list{display:flex;flex-direction:column;gap:1px;background:var(--line);border:1px solid var(--line);}
.myth-row{display:grid;grid-template-columns:1fr;background:var(--line);gap:1px;}
@media(min-width:760px){.myth-row{grid-template-columns:1fr 1fr;}}
.myth-col{background:var(--paper);padding:26px 26px;}
.myth-claim{background:#F5EDEB;}
.myth-fact{background:#EAF1F0;}
.myth-tag{font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;display:block;margin-bottom:10px;}
.myth-claim .myth-tag{color:var(--brick-deep);}
.myth-fact .myth-tag{color:var(--teal);}
.myth-col p{font-size:15px;color:var(--ink);}
.myth-claim p{font-style:italic;color:var(--graphite);}

/* ---- HOW TO USE ---- */
.steps{display:grid;grid-template-columns:1fr;gap:2px;background:var(--line);border:1px solid var(--line);}
@media(min-width:760px){.steps{grid-template-columns:repeat(3,1fr);}}
.step{background:var(--paper);padding:30px 26px;}
.step .tag{font-family:var(--mono);font-size:12px;color:var(--brick-deep);letter-spacing:.08em;}
.step h3{font-size:20px;font-weight:700;margin:14px 0 10px;}
.step p{color:var(--graphite);font-size:14.5px;}

/* ---- FACTS / FORMULA SECTION ---- */
.facts-section{background:var(--paper-2);}
.formula-grid{display:grid;grid-template-columns:1fr;gap:1px;background:var(--line);border:1px solid var(--line);}
@media(min-width:640px){.formula-grid{grid-template-columns:repeat(2,1fr);}}
.formula-card{background:#fff;padding:24px 24px;}
.formula-card .name-row{display:flex;justify-content:space-between;align-items:baseline;gap:10px;margin-bottom:6px;}
.formula-card .name{font-family:var(--display);font-weight:700;font-size:18px;}
.formula-card .pct{font-family:var(--mono);font-size:12px;color:var(--brick-deep);}
.formula-card .inci{font-family:var(--mono);font-size:11px;color:var(--graphite);margin-bottom:10px;display:block;}
.formula-card p{font-size:14px;color:var(--graphite);}
.formula-note{margin-top:20px;font-family:var(--mono);font-size:12px;color:var(--graphite);max-width:72ch;}

/* ---- FEEDBACK ---- */
.testers{display:grid;grid-template-columns:1fr;gap:20px;}
@media(min-width:820px){.testers{grid-template-columns:repeat(3,1fr);}}
.tester{background:#fff;border:1px solid var(--line);padding:24px 22px;display:flex;flex-direction:column;gap:14px;}
.tester blockquote{margin:0;font-size:14.5px;line-height:1.6;color:var(--ink);}
.tester footer{font-family:var(--mono);font-size:11px;color:var(--graphite);display:flex;justify-content:space-between;border-top:1px solid var(--line);padding-top:12px;}

/* ---- FAQ ---- */
.faq-list{border-top:1px solid var(--line);max-width:760px;}
.faq-list details{border-bottom:1px solid var(--line);}
.faq-list summary{padding:20px 4px;font-family:var(--display);font-weight:700;font-size:17px;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:20px;}
.faq-list summary::-webkit-details-marker{display:none;}
.faq-list summary::after{content:"+";font-family:var(--mono);font-size:19px;color:var(--brick-deep);flex-shrink:0;transition:transform .2s ease;}
.faq-list details[open] summary::after{transform:rotate(45deg);}
.faq-list .a{padding:0 4px 20px;color:var(--graphite);font-size:14.5px;max-width:62ch;}

/* ---- SIGNUP ---- */
.signup{background:var(--paper-2);border:1px solid var(--line);padding:48px 36px;display:grid;gap:24px;}
@media(min-width:860px){.signup{grid-template-columns:1fr auto;align-items:center;padding:52px 50px;}}
.signup h2{font-size:clamp(22px,2.8vw,30px);margin:14px 0 10px;}
.signup p{color:var(--graphite);max-width:44ch;}
.signup-form{display:flex;gap:10px;flex-wrap:wrap;}
.signup-form input[type=email]{font-family:var(--body);font-size:15px;padding:13px 15px;border:1px solid var(--ink);background:#fff;min-width:220px;flex:1;}
.signup-form input[type=email]:focus{outline:2px solid var(--brick-deep);outline-offset:1px;}
.signup-msg{font-family:var(--mono);font-size:11.5px;color:var(--teal);margin-top:10px;min-height:1em;}

/* ---- FOOTER ---- */
footer.site{border-top:1px solid var(--line);background:var(--ink);color:#AEBBBB;padding:48px 0 30px;}
.foot-grid{display:grid;grid-template-columns:1fr;gap:30px;margin-bottom:30px;}
@media(min-width:760px){.foot-grid{grid-template-columns:1.4fr 1fr 1fr;}}
.foot-grid .logo{color:var(--paper);}
.foot-grid p{font-size:13.5px;max-width:38ch;margin-top:14px;}
.foot-col h4{font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:#7E8B8B;margin-bottom:14px;}
.foot-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:9px;}
.foot-col a{font-size:13.5px;text-decoration:none;color:#C1CBCB;}
.foot-col a:hover{color:var(--brick);}
.foot-legal{border-top:1px solid #37413F;padding-top:20px;font-family:var(--mono);font-size:11px;color:#7E8B8B;line-height:1.7;}
.foot-bottom{margin-top:16px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;font-family:var(--mono);font-size:11px;color:#7E8B8B;}