/* Domain and Range Textbook Patch 1 */
.domain-reference-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin:22px 0;}
.parent-card{background:#fff;border:1px solid #d7e2ef;border-radius:20px;padding:18px;box-shadow:0 12px 28px rgba(16,35,63,.065);}
.parent-card h3{margin-top:0!important;margin-bottom:8px!important;}
.parent-card .parent-formula{font-weight:800;color:#0a2545;background:#f2f7ff;border-left:6px solid #2563eb;border-radius:14px;padding:10px 12px;margin:10px 0 14px;}
.parent-card svg{display:block;width:100%;height:auto;max-height:190px;background:#fbfdff;border:1px solid #e2ebf5;border-radius:14px;margin:10px 0;}
.domain-range-table{width:100%;border-collapse:separate;border-spacing:0;margin:22px 0;background:#fff;border:1px solid #d7e2ef;border-radius:18px;overflow:hidden;box-shadow:0 12px 28px rgba(16,35,63,.055);}
.domain-range-table th{background:#0b315e;color:#fff;text-align:left;font-size:.98rem;padding:13px 14px;}
.domain-range-table td{vertical-align:top;border-top:1px solid #e1eaf5;padding:13px 14px;font-size:1rem;line-height:1.55;color:#263b57;}
.domain-range-table tr:nth-child(even) td{background:#fbfdff;}
.domain-mini-note{font-size:.94rem!important;line-height:1.55!important;color:#5a6d85!important;margin:.45rem 0 0!important;}
.axis-reading-card{background:#fff;border:1px solid #dbe6f3;border-radius:22px;padding:22px;margin:28px 0;box-shadow:0 16px 38px rgba(16,35,63,.08);}
.axis-reading-card svg{display:block;width:100%;height:auto;max-height:560px;}
.method-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin:20px 0;}
.method-card{background:#fff;border:1px solid #dae5f2;border-radius:18px;padding:18px;box-shadow:0 10px 26px rgba(16,35,63,.05);}
.method-card h3{margin-top:0!important;}
.checklist-box{background:#fff;border:1px solid #dae5f2;border-radius:20px;padding:20px 24px;margin:24px 0;box-shadow:0 10px 28px rgba(16,35,63,.06);}
.checklist-box li{margin:.35rem 0;}
@media(max-width:820px){.domain-reference-grid,.method-grid{grid-template-columns:1fr}.domain-range-table{font-size:.95rem}.domain-range-table th,.domain-range-table td{padding:11px 10px}.axis-reading-card{padding:12px}.parent-card svg{max-height:none}}