:root{--marine:#083344;--teal:#0f766e;--sand:#d6a35d;--ink:#111827;--light:#f8fafc}*{box-sizing:border-box}body{color:var(--ink);background:radial-gradient(circle at 95% 5%,#d6a35d3d,#0000 35%),linear-gradient(#f0fdfa 0%,#fff 50%,#f8fafc 100%);margin:0;font-family:Nunito Sans,Gill Sans,sans-serif}.container{max-width:1040px;margin:0 auto;padding:2.8rem 1.2rem}.board{background:#fffe;border:1px solid #08334426;border-radius:1rem;padding:1.6rem}h1{color:var(--marine);margin:0}.subtitle{color:#475569}.grid{grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:.75rem;margin-top:1rem;display:grid}.card{background:var(--light);border:1px solid #cbd5e1;border-radius:.75rem;padding:.9rem}.tip{color:#0f766e;margin-top:1rem;font-weight:700}