/* ArePeptidesGood.com — shared design system. Premium health-authority publication.
   Every page links this one file so the whole site stays cohesive and future pages inherit it. */

/* ---------- Tokens ---------- */
:root{
  --ink:#161c17;          /* near-black green-tinted */
  --ink-soft:#3c463d;
  --muted:#657066;
  --faint:#8a938b;
  --line:#e7e9e4;
  --line-strong:#d6dad2;
  --bg:#fbfaf6;           /* warm paper */
  --bg-card:#ffffff;
  --soft:#f2f4ee;         /* soft green-grey wash */
  --green:#15633f;        /* clinical deep green */
  --green-ink:#0f4c30;
  --green-bright:#1c8557;
  --green-wash:#eaf2ec;
  --amber:#8a5a12;
  --amber-wash:#fbf2e0;
  --shadow-sm:0 1px 2px rgba(20,30,20,.04),0 2px 8px rgba(20,30,20,.05);
  --shadow-md:0 4px 12px rgba(20,30,20,.06),0 12px 32px rgba(20,30,20,.08);
  --shadow-lg:0 10px 30px rgba(20,30,20,.10),0 30px 60px rgba(20,30,20,.10);
  --radius:14px;
  --radius-sm:10px;
  --maxw:1120px;
  --readw:720px;
  --sans:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  --serif:"Fraunces","Iowan Old Style",Georgia,"Times New Roman",serif;
}

*{margin:0;padding:0;box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  font-family:var(--sans);
  color:var(--ink);
  background:var(--bg);
  line-height:1.65;
  font-size:1.0625rem;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:var(--green);text-decoration:none}
a:hover{color:var(--green-bright)}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.read{max-width:var(--readw);margin-left:auto;margin-right:auto}

/* ---------- Header ---------- */
.topbar{
  position:sticky;top:0;z-index:50;
  background:rgba(251,250,246,.82);
  backdrop-filter:saturate(140%) blur(12px);
  -webkit-backdrop-filter:saturate(140%) blur(12px);
  border-bottom:1px solid var(--line);
}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{display:flex;align-items:center;gap:11px;color:var(--ink)}
.brand:hover{color:var(--ink)}
.brand svg{flex:none}
.brand .name{font-family:var(--serif);font-weight:600;font-size:1.16rem;letter-spacing:-.01em}
.brand .name span{color:var(--green)}
.mainnav{display:flex;align-items:center;gap:28px}
.mainnav a{color:var(--ink-soft);font-weight:500;font-size:.94rem;letter-spacing:-.005em}
.mainnav a:hover{color:var(--green)}
.nav-cta{
  display:inline-flex;align-items:center;gap:7px;
  background:var(--green);color:#fff;font-weight:600;font-size:.9rem;
  padding:9px 18px;border-radius:999px;box-shadow:var(--shadow-sm);
  transition:transform .15s ease,box-shadow .15s ease,background .15s ease;
}
.nav-cta:hover{background:var(--green-ink);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-md)}
.menu-toggle{display:none}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;justify-content:center;
  font-weight:600;font-size:1rem;padding:15px 28px;border-radius:12px;
  border:1px solid transparent;cursor:pointer;transition:transform .15s ease,box-shadow .15s ease,background .15s ease,border-color .15s ease;
  letter-spacing:-.01em;
}
.btn-primary{background:var(--green);color:#fff;box-shadow:var(--shadow-md)}
.btn-primary:hover{background:var(--green-ink);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.btn-ghost{background:transparent;color:var(--green);border-color:var(--line-strong)}
.btn-ghost:hover{border-color:var(--green);background:var(--green-wash);color:var(--green-ink)}
.btn .arrow{transition:transform .15s ease}
.btn:hover .arrow{transform:translateX(3px)}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:96px 0 76px;text-align:center}
.hero::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:
    radial-gradient(1100px 460px at 50% -10%,var(--green-wash),transparent 62%),
    radial-gradient(700px 380px at 88% 8%,#f0ece0,transparent 60%);
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.78rem;font-weight:600;letter-spacing:.11em;text-transform:uppercase;
  color:var(--green);background:var(--bg-card);border:1px solid var(--line);
  padding:8px 15px;border-radius:999px;box-shadow:var(--shadow-sm);margin-bottom:26px;
}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--green-bright);box-shadow:0 0 0 4px var(--green-wash)}
h1,h2,h3{font-family:var(--serif);letter-spacing:-.02em;line-height:1.08;color:var(--ink);font-weight:600}
.hero h1{font-size:clamp(2.3rem,5.6vw,3.7rem);max-width:16ch;margin:0 auto 22px}
.hero h1 em{font-style:italic;color:var(--green)}
.hero .sub{font-size:clamp(1.08rem,2.2vw,1.28rem);color:var(--ink-soft);max-width:56ch;margin:0 auto 36px;line-height:1.6}
.cta-row{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.reassure{margin-top:18px;font-size:.9rem;color:var(--muted)}

/* trust strip */
.trust-strip{margin-top:56px;padding-top:30px;border-top:1px solid var(--line)}
.trust-strip .lbl{font-size:.76rem;font-weight:600;letter-spacing:.13em;text-transform:uppercase;color:var(--faint);margin-bottom:16px}
.trust-logos{display:flex;gap:14px 40px;justify-content:center;align-items:center;flex-wrap:wrap}
.trust-logos span{font-family:var(--serif);font-size:1.08rem;color:var(--ink-soft);font-weight:500;opacity:.82}

/* ---------- Sections ---------- */
section{padding:78px 0}
.section-alt{background:var(--soft)}
.section-head{text-align:center;max-width:60ch;margin:0 auto 52px}
.kicker{display:block;font-size:.8rem;font-weight:700;letter-spacing:.13em;text-transform:uppercase;color:var(--green-bright);margin-bottom:14px}
.kicker.lead{display:inline-flex;align-items:center;gap:9px;font-size:.95rem;letter-spacing:.09em;color:var(--green-ink);background:var(--green-wash);border:1px solid #cfe2d5;padding:9px 18px;border-radius:999px;margin-bottom:18px}
.kicker.lead::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--green-bright)}
section h2{font-size:clamp(1.7rem,3.6vw,2.3rem);margin-bottom:16px}
.section-lead{color:var(--ink-soft);font-size:1.1rem;line-height:1.6}

/* content cards */
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:22px}
.card{
  position:relative;display:flex;flex-direction:column;
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius);
  padding:30px;box-shadow:var(--shadow-sm);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong)}
.card .ic{width:44px;height:44px;border-radius:11px;background:var(--green-wash);display:flex;align-items:center;justify-content:center;margin-bottom:18px;color:var(--green)}
.card h3{font-size:1.24rem;margin-bottom:9px}
.card p{color:var(--muted);font-size:.98rem;flex:1}
.card .go{margin-top:18px;font-weight:600;font-size:.94rem;color:var(--green);display:inline-flex;align-items:center;gap:7px}
.card:hover .go .arrow{transform:translateX(3px)}
.card.linked{cursor:pointer}
.card.linked::after{content:"";position:absolute;inset:0;border-radius:var(--radius)}

/* numbered how-it-works */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:22px;counter-reset:step}
.step{background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow-sm)}
.step .n{counter-increment:step;width:38px;height:38px;border-radius:10px;background:var(--green);color:#fff;font-family:var(--serif);font-weight:600;display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.step .n::before{content:counter(step)}
.step h3{font-size:1.14rem;margin-bottom:8px}
.step p{color:var(--muted);font-size:.97rem}

/* comparison module (conversion centerpiece) */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:20px;max-width:920px;margin:0 auto}
.comp{border-radius:var(--radius);padding:30px;border:1px solid var(--line)}
.comp h3{font-size:1.24rem;margin-bottom:6px;display:flex;align-items:center;gap:10px}
.comp .tag{font-size:.8rem;font-weight:600;letter-spacing:.02em;padding:3px 10px;border-radius:999px}
.comp ul{list-style:none;margin:18px 0 0}
.comp li{position:relative;padding:9px 0 9px 30px;font-size:.98rem;border-top:1px solid var(--line)}
.comp li:first-child{border-top:0}
.comp li::before{position:absolute;left:0;top:9px;font-weight:700}
.comp.good{background:var(--green-wash);border-color:#cfe2d5}
.comp.good .tag{background:var(--green);color:#fff}
.comp.good li::before{content:"✓";color:var(--green-bright)}
.comp.bad{background:#faf6f2;border-color:#ecdfd4}
.comp.bad .tag{background:#a4643a;color:#fff}
.comp.bad li::before{content:"✕";color:#a4643a}
.compare-note{text-align:center;color:var(--muted);font-size:.92rem;max-width:60ch;margin:26px auto 0}

/* editorial standards */
.standards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:26px}
.std{display:flex;gap:15px;align-items:flex-start}
.std .ic{flex:none;width:40px;height:40px;border-radius:10px;background:var(--bg-card);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--green);box-shadow:var(--shadow-sm)}
.std h3{font-size:1.06rem;margin-bottom:5px}
.std p{color:var(--muted);font-size:.94rem}

/* FAQ accordion */
.faq{max-width:var(--readw);margin:0 auto;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;cursor:pointer;padding:22px 40px 22px 0;position:relative;font-weight:600;font-size:1.08rem;font-family:var(--serif);color:var(--ink)}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:6px;top:19px;font-size:1.5rem;font-weight:400;color:var(--green);transition:transform .2s ease}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq .ans{padding:0 0 24px;color:var(--ink-soft);font-size:1rem;line-height:1.65}

/* CTA band */
.cta-band{position:relative;overflow:hidden;background:var(--green-ink);color:#fff;border-radius:22px;padding:70px 40px;text-align:center;box-shadow:var(--shadow-lg)}
.cta-band::before{content:"";position:absolute;inset:0;z-index:0;opacity:.5;background:radial-gradient(600px 300px at 20% 0%,rgba(28,133,87,.6),transparent 60%),radial-gradient(600px 320px at 90% 100%,rgba(15,76,48,.9),transparent 55%)}
.cta-band>*{position:relative;z-index:1}
.cta-band h2{color:#fff;font-size:clamp(1.8rem,3.8vw,2.5rem);margin-bottom:14px}
.cta-band p{color:#d6e6dc;max-width:52ch;margin:0 auto 30px;font-size:1.08rem}
.cta-band .btn-primary{background:#fff;color:var(--green-ink)}
.cta-band .btn-primary:hover{background:#eaf2ec;color:var(--green-ink)}
.cta-band .btn-ghost{color:#fff;border-color:rgba(255,255,255,.4)}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.1);border-color:#fff;color:#fff}

/* ---------- Article pages ---------- */
.article{padding:56px 0 40px}
.breadcrumb{font-size:.86rem;color:var(--muted);margin-bottom:22px}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--green)}
.article h1{font-size:clamp(2rem,4.6vw,2.9rem);max-width:22ch;margin-bottom:18px}
.byline{display:flex;align-items:center;gap:12px;flex-wrap:wrap;color:var(--muted);font-size:.9rem;margin-bottom:34px;padding-bottom:26px;border-bottom:1px solid var(--line)}
.byline .rev{display:inline-flex;align-items:center;gap:6px;color:var(--green);font-weight:600}
.answer-box{
  background:var(--bg-card);border:1px solid #cfe2d5;border-left:4px solid var(--green);
  border-radius:0 var(--radius) var(--radius) 0;padding:24px 28px;margin:0 0 38px;
  box-shadow:var(--shadow-sm);font-size:1.12rem;line-height:1.6;
}
.answer-box .lbl{display:block;font-family:var(--sans);font-size:.74rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--green);margin-bottom:9px}
.prose{font-size:1.075rem;line-height:1.75;color:var(--ink-soft)}
.prose h2{font-size:clamp(1.4rem,3vw,1.75rem);margin:44px 0 14px;color:var(--ink)}
.prose h3{font-size:1.2rem;margin:30px 0 10px;color:var(--ink)}
.prose p{margin-bottom:17px}
.prose ul,.prose ol{margin:0 0 18px 22px}
.prose li{margin-bottom:9px}
.prose strong{color:var(--ink)}
.prose a{text-decoration:underline;text-underline-offset:2px;text-decoration-color:var(--line-strong)}
.prose a:hover{text-decoration-color:var(--green)}
table{width:100%;border-collapse:separate;border-spacing:0;margin:24px 0;font-size:.96rem;background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm)}
th,td{padding:13px 16px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}
thead th{background:var(--soft);font-family:var(--sans);font-weight:600;color:var(--ink);font-size:.88rem;letter-spacing:.01em}
tr:last-child td{border-bottom:0}
td strong{color:var(--ink)}
.callout{background:var(--amber-wash);border-left:4px solid var(--amber);border-radius:0 var(--radius-sm) var(--radius-sm) 0;padding:20px 24px;margin:28px 0;font-size:1rem;color:var(--ink-soft)}
.callout b{color:var(--amber)}
blockquote{border-left:3px solid var(--green);padding:6px 0 6px 22px;margin:24px 0;font-family:var(--serif);font-size:1.2rem;color:var(--ink);font-style:italic}

/* figures / diagrams */
.figure{margin:30px 0;background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px 20px;box-shadow:var(--shadow-sm)}
.figure svg{display:block;width:100%;height:auto;max-width:540px;margin:0 auto}
.figure figcaption{margin:16px auto 0;max-width:46ch;text-align:center;font-size:.9rem;color:var(--muted);font-family:var(--sans);line-height:1.5}

/* related + sources */
.related{background:var(--soft);border-radius:var(--radius);padding:26px 28px;margin:40px 0}
.related .lbl{font-family:var(--sans);font-weight:700;font-size:.8rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-bottom:14px}
.related-links{display:flex;flex-direction:column;gap:2px}
.related-links a{display:flex;align-items:center;justify-content:space-between;padding:12px 0;border-top:1px solid var(--line);font-weight:500;color:var(--ink)}
.related-links a:first-child{border-top:0}
.related-links a:hover{color:var(--green)}
.related-links a .arrow{color:var(--green)}
.sources{margin:44px 0}
.sources h2{font-size:1.2rem;margin-bottom:14px}
.sources ol{margin:0 0 0 20px;color:var(--muted);font-size:.92rem}
.sources li{margin-bottom:7px}

/* disclaimer */
.disclaimer{font-size:.85rem;color:var(--muted);background:var(--soft);border-radius:var(--radius-sm);padding:20px 22px;margin-top:40px;line-height:1.6}
.disclaimer b{color:var(--ink-soft)}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:#c7cec8;margin-top:20px;padding:56px 0 40px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;margin-bottom:36px}
.site-footer .brand .name{color:#fff}
.site-footer .brand .name span{color:var(--green-bright)}
.foot-about{margin-top:14px;font-size:.92rem;color:#9aa39c;max-width:38ch;line-height:1.6}
.foot-col h4{font-family:var(--sans);color:#fff;font-size:.82rem;letter-spacing:.1em;text-transform:uppercase;font-weight:600;margin-bottom:14px}
.foot-col a{display:block;color:#b3bbb4;font-size:.94rem;padding:5px 0}
.foot-col a:hover{color:#fff}
.foot-bottom{border-top:1px solid #2a322b;padding-top:24px;font-size:.82rem;color:#828b83;line-height:1.6}
.foot-bottom .med{margin-top:10px}

/* ---------- Responsive ---------- */
@media(max-width:820px){
  .compare{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr;gap:30px}
  .foot-about{max-width:none}
}
@media(max-width:680px){
  section{padding:56px 0}
  .hero{padding:64px 0 54px}
  .mainnav{display:none}
  .mainnav.open{display:flex;position:absolute;top:66px;left:0;right:0;flex-direction:column;gap:0;background:var(--bg);border-bottom:1px solid var(--line);padding:8px 24px 18px}
  .mainnav.open a{padding:12px 0;border-bottom:1px solid var(--line);width:100%}
  .mainnav.open .nav-cta{margin-top:12px;justify-content:center}
  .menu-toggle{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border:1px solid var(--line);border-radius:10px;background:var(--bg-card);cursor:pointer;color:var(--ink)}
  .foot-grid{grid-template-columns:1fr}
  .cta-band{padding:52px 24px}
  .cta-row{flex-direction:column}
  .cta-row .btn{width:100%}
}