:root{--background:#f7f8f4;--foreground:#17231b;--muted:#647168;--card:#fff;--accent:#2f7d54}*{box-sizing:border-box}body{background:var(--background);color:var(--foreground);margin:0;font-family:Arial,Helvetica,sans-serif}a{color:inherit;text-decoration:none}.shell{max-width:720px;margin:0 auto;padding:24px 16px 48px}.topbar{justify-content:space-between;align-items:center;gap:16px;margin-bottom:28px;display:flex}.brand{letter-spacing:.02em;font-weight:800}.nav{color:var(--muted);gap:12px;font-size:14px;display:flex}.nav a:hover{color:var(--accent)}.hero h1{margin:0 0 10px;font-size:clamp(28px,8vw,48px)}.hero p{color:var(--muted);line-height:1.6}.grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:20px 0;display:grid}.card{background:var(--card);border:1px solid #e4e9e3;border-radius:16px;padding:16px;box-shadow:0 4px 18px #20351b0b}.metric{margin-top:8px;font-size:28px;font-weight:800}.label{color:var(--muted);font-size:13px}.actions{flex-wrap:wrap;gap:10px;margin-top:20px;display:flex}.button{background:var(--accent);color:#fff;cursor:pointer;border:0;border-radius:10px;padding:11px 15px;font-weight:700;display:inline-flex}.button.secondary{color:#245c3d;background:#e5eee7}.list{gap:10px;margin-top:12px;display:grid}.row{border-bottom:1px solid #edf0ec;justify-content:space-between;gap:12px;padding:12px 0;display:flex}.energy-estimate{color:#245c3d;background:#edf7ee;border-radius:10px;gap:5px;margin:12px 0;padding:12px;display:grid}.weight-chart{width:100%;height:160px;color:var(--accent);margin-top:12px;overflow:visible}@media (max-width:480px){.grid{grid-template-columns:1fr 1fr}.nav{gap:7px;font-size:12px}}