/* ==========================================================================
   MEDVIVA, shared design system (used by content pages: protocols, peptides,
   assessment, legal). Home (index.html) keeps its own inline styles for now.
   ========================================================================== */
:root{
  --bg:#F7F1E7;            --bg-rgb:247,241,231;
  --surface:#FFFFFF;       --surface-rgb:255,255,255;
  --border:#E7DDCC;
  --accent:#C2603F;        --accent-rgb:194,96,63;
  --accent-text:#9E4527;
  --accent-light:#E0A07A;
  --text:#211B14;          --text-rgb:33,27,20;
  --muted:#5F5544;         --muted-rgb:95,85,68;
  --tint-1:#FBEFE0; --tint-2:#F3EADB; --tint-3:#EFD9C2; --tint-4:#EACDB0;
  --tint-clay:#EAD9C5; --tint-cta:#F4E2CE;
  --maxw:1180px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;overflow-x:hidden}
body{background:var(--bg);color:var(--text);font-family:'DM Sans',sans-serif;-webkit-font-smoothing:antialiased;line-height:1.6;overflow-x:hidden;max-width:100%}
h1,h2,h3,h4,.display{font-family:'Cormorant Garamond',serif;letter-spacing:-0.02em;font-weight:600;line-height:1.05}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.narrow{max-width:820px}
.eyebrow{font-size:12px;letter-spacing:0.2em;text-transform:uppercase;color:var(--accent-text);font-weight:600}
.muted{color:var(--muted)}
.rule{height:1px;background:linear-gradient(to right,transparent,var(--accent) 50%,transparent);opacity:.5;margin:48px 0}

/* a11y */
.skip{position:absolute;left:-999px;top:0;z-index:200;background:var(--text);color:var(--bg);padding:12px 18px;border-radius:0 0 10px 0;font-size:14px}
.skip:focus{left:0}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--accent-text);outline-offset:3px;border-radius:4px}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:15px 30px;font-size:14px;font-weight:500;border-radius:999px;transition:.3s;cursor:pointer;border:1px solid transparent}
.btn-solid{background:var(--text);color:var(--bg)}
.btn-solid:hover{background:var(--accent);transform:translateY(-1px)}
.btn-outline{border-color:var(--text);color:var(--text);background:transparent}
.btn-outline:hover{background:var(--text);color:var(--bg)}
.btn .arr{transition:transform .3s}
.btn:hover .arr{transform:translateX(4px)}

/* Header / nav */
header.site{position:fixed;inset:0 0 auto 0;z-index:50;transition:.4s;border-bottom:1px solid transparent}
header.site.scrolled{background:rgba(var(--bg-rgb),.9);backdrop-filter:blur(10px);border-color:var(--border)}
.nav{height:78px;display:flex;align-items:center;justify-content:space-between}
.brand{display:inline-flex;align-items:center;gap:11px}
.mark{width:36px;height:36px;border-radius:50%;background:var(--text);color:var(--bg);display:flex;align-items:center;justify-content:center;font-family:'Cormorant Garamond',serif;font-size:21px;font-weight:600;position:relative;flex:none;line-height:1}
.mark::after{content:"";position:absolute;top:7px;right:7px;width:4.5px;height:4.5px;border-radius:50%;background:var(--accent-light)}
.brand .wm{font-family:'Cormorant Garamond',serif;font-size:26px;font-weight:600;letter-spacing:.05em;line-height:1}
.nav-links{display:flex;gap:34px;font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--muted)}
.nav-links a:hover,.nav-links a[aria-current="page"]{color:var(--text)}
.nav-cta{font-size:12px;padding:11px 20px}
@media(max-width:880px){.nav-links{display:none}}
@media(max-width:520px){.nav-cta{font-size:11px;padding:10px 16px}.nav{height:66px}.brand .wm{font-size:22px}.mark{width:32px;height:32px;font-size:18px}}

/* Page hero */
.phero{position:relative;overflow:hidden;padding:150px 0 70px;background:radial-gradient(90% 70% at 80% 10%,var(--tint-1),var(--bg) 60%)}
.phero h1{font-size:clamp(44px,6.5vw,84px);margin:18px 0 0}
.phero p.lead{margin-top:22px;max-width:46ch;font-size:19px;color:var(--muted)}
.breadcrumb{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.breadcrumb a:hover{color:var(--text)}

/* Sections */
section.block{padding:80px 0}
h2.big{font-size:clamp(32px,4.6vw,54px)}
.prose p{margin-bottom:16px;max-width:70ch}
.prose h2{font-size:clamp(28px,3.6vw,40px);margin:8px 0 14px}
.prose h3{font-size:24px;margin:26px 0 10px}
.prose ul{margin:0 0 16px 20px}
.prose li{margin-bottom:8px}

/* Cards / grids */
.grid{display:grid;gap:22px}
.cols-2{grid-template-columns:repeat(2,1fr)}
.cols-3{grid-template-columns:repeat(3,1fr)}
@media(max-width:860px){.cols-3{grid-template-columns:1fr}.cols-2{grid-template-columns:1fr}}
.card{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:30px;transition:.3s}
a.card:hover{border-color:var(--accent);transform:translateY(-2px)}
.tag{display:inline-block;font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--accent-text);font-weight:600;margin-bottom:12px}
.card h3{font-size:27px;margin-bottom:8px}
.card p{color:var(--muted);font-size:15px}

/* Stack detail blocks */
.stack{border:1px solid var(--border);border-radius:20px;overflow:hidden;background:var(--surface);margin-bottom:28px}
.stack-head{padding:34px 34px 8px}
.stack-head .obj{color:var(--muted);margin-top:8px;max-width:60ch}
.stack-body{padding:8px 34px 34px;display:grid;grid-template-columns:1.3fr 1fr;gap:34px}
@media(max-width:780px){.stack-body{grid-template-columns:1fr;gap:22px}}
.comp{list-style:none;margin:0}
.comp li{padding:14px 0;border-top:1px solid var(--border)}
.comp li:first-child{border-top:none}
.comp .pname{font-weight:600;display:flex;gap:8px;align-items:baseline}
.comp .pname .pill{font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:var(--accent-text);border:1px solid var(--border);border-radius:999px;padding:2px 8px}
.comp .pdesc{color:var(--muted);font-size:14px;margin-top:3px}
.aside h4{font-size:13px;letter-spacing:.16em;text-transform:uppercase;color:var(--accent-text);margin-bottom:10px}
.aside ul{list-style:none}
.aside li{display:flex;gap:9px;color:var(--muted);font-size:14px;margin-bottom:8px}
.aside li::before{content:"";width:6px;height:6px;background:var(--accent);flex:none;margin-top:7px}

/* Callout / disclaimer */
.callout{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:22px 24px;color:var(--muted);font-size:14px;line-height:1.7}
.callout strong{color:var(--text)}

/* CTA band */
.ctaband{text-align:center;padding:96px 0;background:radial-gradient(70% 70% at 50% 40%,var(--tint-cta),var(--tint-3) 60%,var(--tint-4))}
.ctaband h2{font-size:clamp(36px,6vw,64px);margin-bottom:16px}
.ctaband p{color:var(--muted);font-size:18px;max-width:36ch;margin:0 auto 30px}

/* Footer */
footer.site{background:var(--bg);border-top:1px solid var(--border);padding:60px 0 40px;margin-top:20px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:44px}
footer.site h4{font-size:12px;letter-spacing:.22em;text-transform:uppercase;color:var(--accent-text);margin-bottom:16px}
footer.site ul{list-style:none}
footer.site li{margin-bottom:9px}
footer.site a,footer.site p{color:var(--muted);font-size:14px}
footer.site a:hover{color:var(--text)}
.foot-bottom{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:12px;color:var(--muted);margin-top:28px}
@media(max-width:780px){.foot-grid{grid-template-columns:1fr 1fr}}
@media(max-width:460px){.foot-grid{grid-template-columns:1fr}}

/* Reveal */
.reveal{opacity:0;transform:translateY(20px);transition:opacity .7s cubic-bezier(.22,1,.36,1),transform .7s cubic-bezier(.22,1,.36,1)}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.reveal{opacity:1;transform:none;transition:none}.btn{transition:none}}