/* Knowledge */
    .knowledge{padding:56px 0;background:linear-gradient(115deg,#0d100f,#151918);color:white}
    .knowledge-layout{display:grid;grid-template-columns:1fr 290px;gap:24px;align-items:stretch}
    .knowledge-main{min-width:0}
    .knowledge-title{margin:0;font-size:clamp(28px,3.6vw,39px);letter-spacing:-.035em}.knowledge-title span{color:var(--gold)}
    .knowledge-lead{max-width:560px;margin:10px 0 0;color:rgba(255,255,255,.65);font-size:14px}
    .topic-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:18px}
    .topic{overflow:hidden;border:1px solid rgba(255,255,255,.14);border-radius:9px;background:#111413;color:white;text-align:left;cursor:pointer;transition:.22s}
    .topic:hover{transform:translateY(-4px);border-color:rgba(215,173,77,.54)}
    .topic img{width:100%;height:96px;object-fit:cover;filter:saturate(.85)}
    .topic-body{padding:15px}.topic h3{margin:0;font-size:15px}.topic p{margin:8px 0 0;color:rgba(255,255,255,.58);font-size:12px;line-height:1.55}.topic .learn{margin-top:13px}
    .calc-teaser{padding:23px 21px;border-radius:11px;background:linear-gradient(145deg,#173d31,#224f3e);box-shadow:0 20px 48px rgba(0,0,0,.22)}
    .calc-symbol{width:51px;height:51px;border:2px solid var(--gold);border-radius:10px;display:grid;place-items:center;color:var(--gold);font-size:24px}
    .calc-teaser h3{margin:18px 0 0;color:var(--gold);font-size:21px}.calc-teaser p{color:rgba(255,255,255,.72);font-size:13px;line-height:1.65}.calc-list{display:grid;gap:11px;margin:20px 0 26px;color:rgba(255,255,255,.76);font-size:12px}.calc-list span:before{content:"✓";margin-right:9px;color:var(--gold)}