/* Ch 8 extras: Maxwell's equations card + NCERT Table 8.1 */
.phy .pmax{margin:16px 0;border:1px solid var(--line);border-radius:16px;overflow:hidden;background:var(--card)}
.phy .pmax .pmh{padding:10px 14px;font-weight:800;background:var(--soft);color:var(--ink)}
.phy .pmax .pmr{display:grid;grid-template-columns:1.6em 1fr;gap:2px 8px;padding:10px 14px;border-top:1px solid var(--line);align-items:baseline}
.phy .pmax .pmn{grid-row:span 2;font-weight:800;color:var(--link)}
.phy .pmax .pmq{font:600 1.05rem/1.4 "Cambria Math","Times New Roman",Georgia,serif;color:var(--ink);overflow-x:auto}
.phy .pmax .pml{font-size:.86rem;color:var(--mut)}
.phy .pmax .pmf{padding:9px 14px;border-top:1px solid var(--line);font-size:.84rem;color:var(--mut)}
.phy .pmax .fr{display:inline-flex;flex-direction:column;vertical-align:middle;text-align:center;font-size:.9em}
.phy .pmax .fr>span:first-child{border-bottom:1px solid currentColor;padding:0 2px}
.phy .ptab{margin:16px 0}
.phy .ptab .ptc{font-weight:800;margin:0 0 6px;color:var(--ink)}
.phy .ptab .ptw{overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--line);border-radius:12px}
.phy .ptab table{border-collapse:collapse;min-width:560px;width:100%;font-size:.84rem}
.phy .ptab th,.phy .ptab td{padding:8px 10px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.phy .ptab thead th{background:var(--soft);font-weight:800}
.phy .ptab tbody th{font-weight:800;white-space:nowrap}
.phy .ptab td:nth-child(2){white-space:nowrap;font-variant-numeric:tabular-nums}
.phy .ptab .ptn{font-size:.78rem;color:var(--mut);margin:6px 2px 0}