:root{--ideal-primary:#10b981;--ideal-dark:#047857;--ideal-light:#ecfdf5;--ideal-border:#a7f3d0;--ideal-gradient:linear-gradient(135deg, #10b981 0%, #059669 100%)}body{background-color:#fcfcfd;font-family:Inter,sans-serif}.glass-card{background:#fff;border:1px solid #e2e8f0;border-radius:24px;overflow:hidden;height:auto}.hero-stat-card{background:var(--ideal-gradient);color:#fff;border-radius:24px;padding:35px 20px;text-align:center;box-shadow:0 20px 25px -5px rgba(16,185,129,.2)}.weight-value{font-size:4rem;font-weight:950;line-height:1;letter-spacing:-2px;display:flex;align-items:baseline;justify-content:center;gap:8px}.weight-unit{font-size:1.5rem;font-weight:700;opacity:.8;letter-spacing:0}.toggle-group{background:#f1f5f9;border-radius:50px;padding:4px;display:inline-flex}.tgl-btn{border:none;padding:6px 14px;border-radius:50px;font-weight:700;font-size:.7rem;cursor:pointer;transition:all .3s ease;background:0 0;color:#64748b;text-transform:uppercase}.tgl-btn.active{background:var(--ideal-dark);color:#fff}.input-group-custom{background:#f8fafc;border:1px solid #e2e8f0;border-radius:12px;padding:8px 12px}.input-group-custom label{font-size:.65rem;font-weight:800;color:#94a3b8;text-transform:uppercase;display:block;margin-bottom:2px}.input-group-custom input,.input-group-custom select{border:none;background:0 0;font-weight:700;font-size:1rem;width:100%;outline:0}.formula-box{padding:15px;border-radius:16px;text-align:center;border:1px solid #e2e8f0;background:#f8fafc}.formula-label{font-size:.65rem;font-weight:800;color:#64748b;text-transform:uppercase;display:block}.formula-val{font-size:1.3rem;font-weight:800;color:var(--ideal-dark)}.gauge-wrapper{position:relative;margin-top:40px;margin-bottom:30px;width:100%;padding:0 10px}.gauge-pointer{position:absolute;top:-35px;left:50%;transform:translateX(-50%);text-align:center;transition:left .5s ease-out;z-index:10}.gauge-pointer-val{font-weight:900;font-size:.9rem;color:#1e293b;background:#fff;padding:2px 8px;border-radius:12px;border:2px solid #1e293b;margin-bottom:-2px}.gauge-pointer-arrow{width:0;height:0;margin:0 auto;border-left:6px solid transparent;border-right:6px solid transparent;border-top:8px solid #1e293b}.gauge-track{display:flex;height:20px;border-radius:10px;overflow:hidden;box-shadow:inset 0 2px 4px rgba(0,0,0,.1)}.gauge-segment{height:100%;position:relative;border-right:1px solid rgba(255,255,255,.3)}.gauge-labels{display:flex;position:relative;height:20px;margin-top:8px}.gauge-label-tick{position:absolute;font-size:.65rem;font-weight:700;color:#64748b;transform:translateX(-50%);text-align:center}