/* Performance Nutrition London — Nutrition Library
   Brand CI: navy #0d1b2a, gold #c9a84c, cream #faf8f3; Cormorant Garamond + Montserrat */
:root{
  --navy:#0d1b2a; --navy-mid:#162236; --gold:#c9a84c; --gold-dk:#9c7f2e; --gold-lt:#e8c97a;
  --cream:#faf8f3; --white:#fffef9; --text:#2b3440; --muted:#5a6070; --line:#e6dfce;
  --green:#2d6a4f; --amber:#b07d1a; --red:#b23a44;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--cream);color:var(--text);
  font-family:"Montserrat",system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
  font-size:16px;line-height:1.6;font-weight:300}
.wrap{max-width:820px;margin:0 auto;padding:0 22px}
a{color:var(--gold-dk)}
img{max-width:100%}

/* header */
.site-head{background:var(--navy);color:#fff;padding:18px 0;position:relative;overflow:hidden}
.head-inner{display:flex;align-items:center;justify-content:space-between;gap:14px 20px;flex-wrap:wrap}
.lib-nav{display:flex;align-items:center;gap:22px;flex-wrap:wrap}
.lib-nav a{color:#e9e4d6;text-decoration:none;font-size:13px;letter-spacing:.03em}
.lib-nav a:hover{color:var(--gold-lt)}
.lib-nav .lib-cta{border:1px solid var(--gold);color:var(--gold-lt);padding:7px 15px;border-radius:2px}
.lib-nav .lib-cta:hover{background:var(--gold);color:var(--navy)}
.brand-rule{width:38px;height:2px;background:var(--gold);margin-bottom:9px}
.brand{font-family:"Montserrat";font-weight:600;letter-spacing:.16em;font-size:12px;color:var(--gold);text-decoration:none;display:block}
.brand-tag{color:#9aa2b0;font-size:11px;margin-top:5px;letter-spacing:.02em}
.ghost{width:118px;height:118px;position:absolute;right:6px;top:-14px;opacity:.5}

/* article */
.article{padding:44px 22px 60px}
.back{display:inline-block;font-size:12px;letter-spacing:.06em;text-transform:uppercase;text-decoration:none;color:var(--gold-dk);margin-bottom:22px}
h1{font-family:"Cormorant Garamond",Georgia,serif;font-weight:600;color:var(--navy);
  font-size:clamp(34px,6vw,52px);line-height:1.05;margin:0 0 6px}
.subtitle{font-family:"Cormorant Garamond",Georgia,serif;font-style:italic;color:var(--gold-dk);
  font-size:clamp(18px,3vw,23px);margin:0 0 26px;font-weight:400}
h2{font-family:"Montserrat";font-weight:600;color:var(--navy);font-size:18px;margin:34px 0 12px;
  padding:7px 0 7px 14px;border-left:3px solid var(--gold);background:linear-gradient(90deg,#f3efe4,rgba(243,239,228,0))}
h3{font-family:"Montserrat";font-weight:600;color:var(--navy);font-size:15px;margin:0 0 8px}
p{margin:0 0 14px}
.lead{font-size:17px;color:var(--text)}
.bullets{margin:0 0 16px;padding-left:0;list-style:none}
.bullets li{position:relative;padding-left:20px;margin-bottom:8px}
.bullets li::before{content:"";position:absolute;left:2px;top:9px;width:6px;height:6px;background:var(--gold);border-radius:50%}

/* callout */
.callout{background:var(--navy);color:#fff;font-style:italic;border-left:3px solid var(--gold);
  padding:16px 20px;margin:22px 0;border-radius:2px;line-height:1.55}
/* sources box */
.sources{border:1px solid var(--gold);background:var(--white);padding:14px 18px;margin:24px 0 10px;font-size:14px;color:var(--muted)}
.disc{font-size:12.5px;color:var(--muted);font-style:italic;line-height:1.5}

/* two column */
.twocol{display:grid;grid-template-columns:1fr 1fr;gap:26px;margin:14px 0 18px}
.twocol .col ul{margin:0;padding-left:0;list-style:none}
.twocol .col li{position:relative;padding-left:18px;margin-bottom:7px;font-size:15px}
.twocol .col li::before{content:"";position:absolute;left:0;top:9px;width:5px;height:5px;background:var(--gold);border-radius:50%}

/* table */
.table-wrap{overflow-x:auto;margin:14px 0 20px}
table{border-collapse:collapse;width:100%;min-width:520px;font-size:14px}
thead th{background:var(--navy);color:var(--gold-lt);font-weight:600;text-align:left;padding:10px 12px;font-size:13px}
tbody td{padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}
tbody tr:nth-child(even){background:#f3efe6}
tbody td:first-child{font-weight:600;color:var(--navy);border-left:2px solid var(--gold)}

/* download button */
.dl{padding:6px 22px 40px}
.btn{display:inline-block;background:var(--navy);color:var(--gold-lt);text-decoration:none;
  font-size:13px;letter-spacing:.05em;padding:11px 20px;border-radius:2px;border-left:3px solid var(--gold)}
.btn:hover{background:var(--navy-mid)}

/* hub */
.hub .cat{border-left:none;background:none;padding:0;margin:38px 0 14px;color:var(--gold-dk);
  font-family:"Cormorant Garamond",serif;font-weight:600;font-size:24px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}
.card{display:block;background:var(--white);border:1px solid var(--line);border-left:3px solid var(--gold);
  border-radius:2px;padding:16px 18px;text-decoration:none;color:inherit;transition:transform .12s,box-shadow .12s}
.card:hover{transform:translateY(-2px);box-shadow:0 6px 18px rgba(13,27,42,.08)}
.card h3{margin:0 0 6px}
.card p{margin:0;font-size:13.5px;color:var(--muted)}
.card.muted{opacity:.6;border-left-color:var(--line)}

/* footer */
.site-foot{background:var(--navy);color:#7c828e;font-size:12px;text-align:center;padding:16px 0;margin-top:30px;border-top:2px solid var(--gold)}
.site-foot a{color:#9aa2b0;text-decoration:none}

@media(max-width:560px){
  .twocol{grid-template-columns:1fr;gap:14px}
  .article{padding:32px 0 44px}
  .ghost{opacity:.28}
}