/* Forge Bioenergy — core stylesheet */
:root{
  --ink:#12141a; --graphite:#1b1e26; --slate:#2b303c;
  --copper:#c2703f; --amber:#e0973a; --ember:#a8542c;
  --paper:#ffffff; --mist:#f5f6f8; --line:#e3e5ea; --muted:#666d7e;
  --t1:#1f7a4c; --t2:#2f6fb5; --t3:#9a6b12; --t4:#8a5a2b; --t5:#7a2f2f;
  --max:1140px; --r:10px;
  --sans:"Helvetica Neue",Helvetica,Arial,system-ui,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--sans);color:var(--ink);background:var(--paper);line-height:1.62;-webkit-font-smoothing:antialiased}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
a{color:var(--ember);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{line-height:1.22;letter-spacing:-.015em;font-weight:700}
h1{font-size:clamp(2rem,4.4vw,3.1rem)}
h2{font-size:clamp(1.4rem,2.4vw,1.95rem);margin-bottom:.6rem}
h3{font-size:1.12rem;margin-bottom:.35rem}
p{margin-bottom:1rem}

/* ---------- header / nav ---------- */
.top{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-.02em;font-size:1.12rem;color:var(--ink)}
.brand:hover{text-decoration:none}
.brand svg{width:26px;height:26px;flex:none}
.brand span small{display:block;font-size:.6rem;letter-spacing:.18em;color:var(--muted);font-weight:600;margin-top:-2px}
.menu{display:flex;align-items:center;gap:28px;list-style:none}
.menu a{color:var(--slate);font-weight:600;font-size:.93rem}
.menu a:hover{color:var(--ember);text-decoration:none}
.drop{position:relative}
.drop-panel{position:absolute;top:100%;left:-14px;background:#fff;border:1px solid var(--line);border-radius:var(--r);
  padding:8px;min-width:236px;box-shadow:0 12px 30px rgba(15,18,25,.1);display:none}
.drop:hover .drop-panel{display:block}
.drop-panel a{display:block;padding:8px 12px;border-radius:6px;font-weight:500;font-size:.9rem}
.drop-panel a:hover{background:var(--mist)}
.burger{display:none;background:none;border:1px solid var(--line);border-radius:8px;padding:7px 10px;font-size:1rem;cursor:pointer}

/* ---------- hero ---------- */
.hero{background:linear-gradient(180deg,var(--graphite),var(--ink));color:#fff;padding:78px 0 68px;border-bottom:3px solid var(--copper)}
.hero h1{max-width:17ch;margin-bottom:16px}
.hero h1 em{font-style:normal;color:var(--amber)}
.hero p.lede{font-size:1.1rem;color:#c3c8d4;max-width:62ch;margin-bottom:26px}
.cta{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-block;padding:11px 20px;border-radius:8px;font-weight:700;font-size:.94rem;border:1px solid transparent}
.btn-p{background:var(--copper);color:#fff}
.btn-p:hover{background:var(--ember);text-decoration:none}
.btn-g{border-color:#4a5162;color:#e6e9f0}
.btn-g:hover{border-color:var(--amber);color:var(--amber);text-decoration:none}
.stats{display:flex;gap:40px;margin-top:40px;flex-wrap:wrap}
.stat b{display:block;font-size:1.7rem;color:#fff}
.stat span{font-size:.76rem;letter-spacing:.11em;color:#8f97a8;text-transform:uppercase;font-weight:600}

/* ---------- sections ---------- */
section{padding:64px 0}
.sec-head{margin-bottom:30px;max-width:70ch}
.sec-head p{color:var(--muted)}
.eyebrow{font-size:.72rem;letter-spacing:.17em;text-transform:uppercase;color:var(--copper);font-weight:800;margin-bottom:8px}
.alt{background:var(--mist);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* ---------- grids / cards ---------- */
.grid{display:grid;gap:18px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:20px;transition:.15s}
.card:hover{border-color:var(--copper);box-shadow:0 8px 24px rgba(15,18,25,.07);text-decoration:none}
a.card{display:block;color:inherit}
.card .ico{width:30px;height:30px;color:var(--copper);margin-bottom:12px}
.card h3{color:var(--ink)}
.card p{color:var(--muted);font-size:.9rem;margin-bottom:0}
.count{font-size:.74rem;color:var(--muted);font-weight:700;letter-spacing:.06em}

/* ---------- evidence tiers ---------- */
.tier{display:inline-block;font-size:.66rem;font-weight:800;letter-spacing:.09em;text-transform:uppercase;
  padding:3px 8px;border-radius:999px;border:1px solid currentColor;white-space:nowrap}
.tier-1{color:var(--t1)} .tier-2{color:var(--t2)} .tier-3{color:var(--t3)}
.tier-4{color:var(--t4)} .tier-5{color:var(--t5)}
.tierbar{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
.tierbar div{border-left:3px solid;padding:10px 12px;background:#fff;border-radius:0 6px 6px 0}
.tierbar b{display:block;font-size:.8rem;margin-bottom:2px}
.tierbar p{font-size:.79rem;color:var(--muted);margin:0}

/* ---------- peptide index ---------- */
.tools{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:24px}
#q{flex:1;min-width:240px;padding:11px 14px;border:1px solid var(--line);border-radius:8px;font-size:.95rem;font-family:inherit}
#q:focus{outline:2px solid var(--copper);outline-offset:-1px}
.chip{padding:8px 14px;border:1px solid var(--line);border-radius:999px;background:#fff;cursor:pointer;
  font-size:.85rem;font-weight:600;color:var(--slate);font-family:inherit}
.chip.on{background:var(--ink);color:#fff;border-color:var(--ink)}
.plist{border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.prow{display:grid;grid-template-columns:1.5fr 1.6fr auto;gap:16px;align-items:center;
  padding:14px 18px;border-bottom:1px solid var(--line);color:inherit}
.prow:last-child{border-bottom:0}
.prow:hover{background:var(--mist);text-decoration:none}
.prow b{font-size:1rem}
.prow small{display:block;color:var(--muted);font-size:.78rem}
.prow .cls{font-size:.85rem;color:var(--muted)}
.cat-h{background:var(--ink);color:#fff;padding:9px 18px;font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;font-weight:800}

/* ---------- peptide detail ---------- */
.phead{border-bottom:1px solid var(--line);padding:36px 0 28px;background:var(--mist)}
.crumb{font-size:.8rem;color:var(--muted);margin-bottom:10px}
.phead h1{font-size:2.3rem;margin-bottom:6px}
.alias{color:var(--muted);font-size:.95rem;margin-bottom:12px}
.facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:var(--r);overflow:hidden;margin:26px 0}
.facts div{background:#fff;padding:13px 15px}
.facts dt{font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-weight:800;margin-bottom:3px}
.facts dd{font-size:.9rem;font-weight:600;word-break:break-word}
.body-col{max-width:74ch}
.body-col h2{margin-top:34px;padding-top:6px}
.body-col ul{margin:0 0 1rem 1.1rem}
.body-col li{margin-bottom:.4rem}
.note{border-left:3px solid var(--copper);background:var(--mist);padding:14px 18px;border-radius:0 8px 8px 0;margin:22px 0}
.note b{display:block;margin-bottom:3px}
.note p{margin:0;font-size:.92rem;color:var(--slate)}
.refs{font-size:.86rem;color:var(--muted)}
.refs li{margin-bottom:.5rem}

/* ---------- disclaimer / footer ---------- */
.disc{background:#2a1f18;color:#e7d9cd;border-top:3px solid var(--copper);padding:30px 0;font-size:.88rem}
.disc b{color:var(--amber)}
.foot{background:var(--ink);color:#9aa2b2;padding:52px 0 26px;font-size:.88rem}
.foot a{color:#c8cedb}
.foot h4{color:#fff;font-size:.74rem;letter-spacing:.14em;text-transform:uppercase;margin-bottom:12px}
.foot ul{list-style:none}
.foot li{margin-bottom:7px}
.foot-bot{border-top:1px solid #262b36;margin-top:34px;padding-top:20px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:.8rem}

@media(max-width:860px){
  .g3,.g4{grid-template-columns:repeat(2,1fr)}
  .tierbar{grid-template-columns:1fr}
  .menu{display:none}
  .menu.open{display:flex;position:absolute;top:66px;left:0;right:0;background:#fff;flex-direction:column;
    align-items:flex-start;gap:0;padding:10px 24px 18px;border-bottom:1px solid var(--line)}
  .menu.open li{width:100%;padding:9px 0}
  .drop-panel{position:static;display:block;border:0;box-shadow:none;padding:4px 0 4px 12px;min-width:0}
  .burger{display:block}
  .prow{grid-template-columns:1fr auto}
  .prow .cls{display:none}
}
@media(max-width:560px){.g2,.g3,.g4{grid-template-columns:1fr}.stats{gap:24px}}