@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,700;1,400;1,700&family=Work+Sans:wght@200;300;400;500;600&display=swap');

:root {
  --peat: #0c0804;
  --oak: #140e06;
  --barrel: #1e1408;
  --amber-deep: #8b4400;
  --amber: #c47010;
  --amber-bright: #e09030;
  --honey: #f0c060;
  --cream: #f8ecc8;
  --tan: #d4a060;
  --border: rgba(196,112,16,0.22);
  --glow: rgba(196,112,16,0.08);
  --text: #8a5820;
  --text-bright: #c88840;
  --text-dim: #3a1e08;
  --white: #fdf5e0;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
body{font-family:'Work Sans',sans-serif;background:var(--peat);color:var(--text);min-height:100vh;overflow-x:hidden;}
#eth-canvas{position:fixed;inset:0;z-index:0;pointer-events:none;}
body::before{content:'C₂H₅OH';position:fixed;bottom:-5%;left:-2%;font-size:16vw;font-weight:700;opacity:0.02;z-index:1;pointer-events:none;color:var(--amber);font-family:'Playfair Display',serif;}
.wrap{position:relative;z-index:2;max-width:1040px;margin:0 auto;padding:0 28px 90px;}

/* ── HERO ── */
.hero{padding:68px 0 54px;display:grid;grid-template-columns:1fr 300px;gap:44px;align-items:center;border-bottom:1px solid var(--border);margin-bottom:58px;}
.hero-tag{font-size:0.58rem;letter-spacing:5px;text-transform:uppercase;color:var(--amber);opacity:0.6;margin-bottom:14px;font-weight:500;}
.hero h1{font-family:'Playfair Display',serif;font-size:clamp(3.8rem,11vw,7rem);font-weight:700;font-style:italic;line-height:0.88;color:var(--cream);letter-spacing:-1px;}
.hero h1 em{display:block;font-size:0.22em;font-style:normal;font-weight:400;letter-spacing:5px;color:var(--text-dim);margin-top:12px;font-family:'Work Sans',sans-serif;text-transform:uppercase;}
.hero-desc{font-size:0.96rem;line-height:1.87;color:var(--text);font-weight:300;margin-top:18px;}

/* ── Molecule card ── */
.mol-card{background:linear-gradient(135deg,var(--oak),var(--barrel));border:1px solid var(--border);border-radius:6px;padding:24px;text-align:center;box-shadow:0 8px 30px rgba(196,112,16,0.1);}
.mol-formula{font-family:'Playfair Display',serif;font-size:2.8rem;font-style:italic;color:var(--honey);margin-bottom:8px;letter-spacing:1px;}
.mol-name{font-size:0.65rem;letter-spacing:4px;text-transform:uppercase;color:var(--amber);opacity:0.6;margin-bottom:12px;font-weight:500;}
.mol-canvas-wrap canvas{display:block;margin:0 auto;}
.mol-mw{font-size:0.72rem;color:var(--text-dim);margin-top:8px;}

/* ── Stats ── */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(148px,1fr));border:1px solid var(--border);overflow:hidden;margin-bottom:58px;}
.stat{padding:18px 14px;background:var(--oak);border-right:1px solid var(--border);transition:background 0.2s;}
.stat:last-child{border-right:none;} .stat:hover{background:var(--glow);}
.s-label{font-size:0.52rem;letter-spacing:2.5px;text-transform:uppercase;color:var(--amber);opacity:0.55;margin-bottom:7px;font-weight:600;}
.s-value{font-family:'Playfair Display',serif;font-size:1.1rem;color:var(--cream);line-height:1.1;}
.s-unit{font-size:0.6rem;color:var(--text-dim);font-family:'Work Sans',sans-serif;}

/* ── Sections ── */
.section{margin-bottom:56px;opacity:0;transform:translateY(18px);transition:opacity 0.65s,transform 0.65s;}
.section.visible{opacity:1;transform:none;}
.sh{display:flex;align-items:baseline;gap:14px;margin-bottom:20px;padding-bottom:12px;border-bottom:1px solid var(--border);}
.sn{font-size:0.55rem;letter-spacing:3px;color:var(--amber);opacity:0.4;}
.section h2{font-family:'Playfair Display',serif;font-size:1.7rem;font-weight:700;font-style:italic;color:var(--cream);}
p{font-size:0.96rem;line-height:1.87;color:var(--text);font-weight:300;margin-bottom:14px;}
strong{color:var(--text-bright);font-weight:600;}

/* ── Fermentation steps ── */
.ferm-steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:0;border:1px solid var(--border);overflow:hidden;margin-top:18px;border-radius:3px;}
.ferm-step{padding:20px 16px;background:var(--oak);border-right:1px solid var(--border);position:relative;}
.ferm-step:last-child{border-right:none;}
.ferm-step::after{content:'→';position:absolute;right:-12px;top:50%;transform:translateY(-50%);color:var(--amber);font-size:1.2rem;z-index:3;}
.ferm-step:last-child::after{display:none;}
.ferm-num{font-family:'Playfair Display',serif;font-size:1.8rem;font-style:italic;color:rgba(196,112,16,0.2);display:block;margin-bottom:4px;}
.ferm-step h3{font-size:0.8rem;font-weight:700;color:var(--tan);text-transform:uppercase;letter-spacing:0.5px;margin-bottom:6px;}
.ferm-step p{font-size:0.78rem;margin:0;line-height:1.5;}

/* ── Reactions ── */
.reaction-box{background:var(--oak);border:1px solid var(--border);border-left:3px solid var(--amber-bright);border-radius:3px;padding:18px 22px;margin-bottom:12px;}
.reaction-box .react-label{font-size:0.55rem;letter-spacing:3px;text-transform:uppercase;color:var(--amber);opacity:0.6;margin-bottom:8px;font-weight:600;}
.reaction-box .equation{font-family:'Playfair Display',serif;font-size:1.05rem;font-style:italic;color:var(--cream);margin-bottom:6px;}
.reaction-box .react-desc{font-size:0.8rem;color:var(--text);line-height:1.5;}

/* ── Uses grid ── */
.uses-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:10px;margin-top:18px;}
.use-card{background:var(--oak);border:1px solid var(--border);border-top:2px solid var(--amber);border-radius:3px;padding:16px;transition:background 0.2s;}
.use-card:hover{background:var(--glow);}
.use-card h3{font-size:0.8rem;font-weight:600;color:var(--tan);text-transform:uppercase;letter-spacing:0.5px;margin-bottom:6px;}
.use-card p{font-size:0.78rem;margin:0;line-height:1.5;}

/* ── Risks section ── */
.risk-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:18px;}
.risk-card{background:var(--oak);border:1px solid var(--border);border-radius:3px;padding:18px;}
.risk-card h3{font-size:0.82rem;font-weight:700;color:var(--amber);text-transform:uppercase;letter-spacing:0.5px;margin-bottom:8px;}
.risk-card p{font-size:0.82rem;margin:0;line-height:1.6;}

.footer-band{margin-top:70px;border-top:1px solid var(--border);padding-top:20px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;}
.footer-band span{font-size:0.52rem;letter-spacing:2px;color:var(--text-dim);text-transform:uppercase;font-weight:500;}
@media(max-width:640px){.hero{grid-template-columns:1fr;} .mol-card{display:none;} .risk-grid{grid-template-columns:1fr;} .ferm-steps{grid-template-columns:1fr;} .ferm-step::after{content:'↓';right:auto;bottom:-12px;left:50%;}}