/* Progressive enhancement: every explanation remains readable without JS. */
.cell-explorer { margin: 1.6rem 0; border: 1px solid #bfd9d5; border-radius: 16px; overflow: hidden; background: #f5faf9; }
.cell-choices { display: flex; flex-wrap: wrap; gap: 8px; padding: 16px; border-bottom: 1px solid #d2e3df; background: #e9f3f1; }
.cell-choices[hidden], .cell-panel[hidden] { display: none; }
.cell-choices button { flex: 1 1 130px; min-height: 46px; padding: 11px 14px; border-radius: 8px; border: 1px solid #a6c6bf; background: #fff; color: #174858; font: inherit; font-size: .96rem; font-weight: 700; line-height: 1.35; cursor: pointer; }
.cell-choices button:hover { background: #d8ebe5; }
.cell-choices button[aria-pressed="true"] { background: #225c51; border-color: #225c51; color: white; }
.cell-choices button:focus-visible, .cell-table-wrap:focus-visible { outline: 3px solid #226f89; outline-offset: 3px; }
.cell-panel { padding: 24px clamp(18px, 4vw, 32px); }
.cell-panel + .cell-panel:not([hidden]) { border-top: 1px solid #d2e3df; }
.cell-panel h3 { margin-top: 0; color: #173f4d; }
.cell-panel p:last-child { margin-bottom: 0; }
.cell-table-wrap { overflow-x: auto; margin: 1.5rem 0; }
.cell-table { width: 100%; min-width: 490px; border-collapse: collapse; font-size: .98rem; line-height: 1.6; }
.cell-table caption { text-align: left; color: #214f56; font-weight: 700; padding: 0 0 12px; }
.cell-table th, .cell-table td { padding: 15px; text-align: left; vertical-align: top; border-bottom: 1px solid #d8e5e1; }
.cell-table thead { background: #e9f3f1; }
.cell-table tbody th { width: 24%; }
.cell-article sup { margin-left: .2em; font-size: .78em; }
.cell-article sup a { padding: .15em; }
.cell-article [id] { scroll-margin-top: var(--cell-sticky-offset, 140px); }
.cell-hero .research-illustration figcaption { font-size: .9rem; line-height: 1.6; }
@media (max-width: 600px) { .cell-choices { display: grid; grid-template-columns: minmax(0, 1fr); padding: 12px; } .cell-choices button { width: 100%; min-width: 0; } .cell-panel { padding: 20px 18px; } .cell-article [id] { scroll-margin-top: var(--cell-sticky-offset, 300px); } }
@media print { .cell-choices { display: none !important; } .cell-panel[hidden] { display: block; } .cell-table { min-width: 0; } }