:root{font:16px system-ui;color:#f4f7f1;background:#15120d;--panel:#262116;--accent:#d9b965;--ok:#7bd9ad}*{box-sizing:border-box}body{margin:0}header{height:68px;display:flex;align-items:center;gap:24px;padding:0 max(24px,5vw);border-bottom:1px solid #54472f;position:sticky;top:0;background:#15120df2}.brand{color:white;text-decoration:none;letter-spacing:.12em}.brand b,.eyebrow{color:var(--accent)}nav{display:flex;gap:8px;flex:1}button,input,textarea{font:inherit}button{background:#342c1d;color:white;border:1px solid #695a3b;border-radius:9px;padding:10px 15px;cursor:pointer}button:hover,button:focus{border-color:var(--accent)}#environment{background:#8b5e00;text-align:center;font-weight:700;padding:6px;min-height:6px}main{max-width:1100px;margin:auto;padding:55px 28px}h1{font-size:clamp(2.4rem,6vw,5rem);line-height:1;max-width:900px}.metrics{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:14px;margin:35px 0}.metrics article,.tester,dialog{background:var(--panel);border:1px solid #54472f;border-radius:15px;padding:20px}.metrics span{display:block;color:#c9bfa9}.metrics b{font-size:2rem}.tester{max-width:650px}.tester div{display:grid;grid-template-columns:1fr 1fr;gap:12px}label{display:block;margin:12px 0}input[type=number],textarea{width:100%;background:#100e0a;color:white;border:1px solid #695a3b;border-radius:8px;padding:10px}textarea{min-height:85px}.ok{color:var(--ok)}.warning{color:#ffad8b}dialog{color:white;max-width:560px}dialog::backdrop{background:#000a}dialog>button{float:right}li{margin:14px 0}@media(max-width:700px){header{height:auto;flex-wrap:wrap;padding:10px;gap:8px}nav{order:3;width:100%;overflow:auto}.tester div{grid-template-columns:1fr}}