:root{--pct-primary:#2563eb;--pct-secondary:#0ea5e9;--pct-success:#16a34a;--pct-warning:#f59e0b;--pct-danger:#dc2626;--pct-gradient:linear-gradient(135deg, #1e293b 0%, #2563eb 100%)}body{background:#f4f7fb}.tab1{background:linear-gradient(89deg,#9fda9f,#3de7d2)!important}.tab2{background:linear-gradient(89deg,#dbb5de,#d73de7)!important}.tab3{background:linear-gradient(89deg,#b5cede,#3da4e7)!important}.tab4{background:linear-gradient(89deg,#dedcb5,#e7e03d)!important}.tab5{background:linear-gradient(89deg,#deb5c0,#e73d60)!important}.tab6{background:linear-gradient(89deg,#b5deb8,#4be73d)!important}.tab7{background:linear-gradient(89deg,#b5deb8,#1bcfb4)!important}.tab8{background:linear-gradient(89deg,#f0fc4c,#cfa01b)!important}.tab9{background:linear-gradient(89deg,#4cfced,#1bcfb9)!important}.pct-card{border:none;border-radius:18px;overflow:hidden}.calc-box{background:#fff;border-radius:18px;padding:22px;box-shadow:0 2px 12px rgba(0,0,0,.05);height:100%;transition:.25s}.calc-box:hover{transform:translateY(-3px);box-shadow:0 6px 18px rgba(0,0,0,.08)}.formula-title{font-size:1rem;font-weight:800;color:var(--pct-primary);margin-bottom:10px}.formula-desc{font-size:.9rem;color:#6b7280;margin-bottom:20px;min-height:42px}.answer-box{background:#eff6ff;border-radius:14px;padding:14px;margin-top:18px}.answer-label{font-size:.72rem;font-weight:700;color:#6b7280;text-transform:uppercase}.answer-value{font-size:1.6rem;font-weight:800;color:#111827}.chart-wrapper{position:relative;width:100%;height:420px}.section-title{font-size:.8rem;font-weight:800;text-transform:uppercase;letter-spacing:.5px;color:var(--pct-primary);border-bottom:2px solid #eef2ff;padding-bottom:10px;margin-bottom:20px}.form-control{border-radius:10px;height:45px}.middle-text{font-weight:700;color:#111827;padding-top:10px}