/* steel-x.css — Steel Studio details (v55) */
.sd-wrap { display: grid; gap: 14px; }
.sd-card .cp-form { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 8px 12px; margin-bottom: 10px; }
.sd-two { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: 14px; align-items: start; margin-top: 10px; }
@media (max-width: 900px) { .sd-two { grid-template-columns: 1fr; } }
.sd-fig { margin: 0; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; background: #fff; }
.sd-fig svg { display: block; width: 100%; height: auto; }
.sd-fig figcaption { display: flex; justify-content: space-between; align-items: center; gap: 8px; padding: 6px 10px; font-size: .74rem; color: var(--muted); border-top: 1px solid var(--line); background: var(--bg); }
.sd-pills { display: flex; flex-wrap: wrap; gap: 6px; }
.sd-pills .pill { font-size: .74rem; line-height: 1.35; }
.sd-pills .pill small { opacity: .75; }
.sd-tw { overflow-x: auto; margin: 6px 0; }
.sd-tab tr[data-xrow] { cursor: pointer; }
.sd-tab tr.on td { background: color-mix(in srgb, var(--purple-ink, #6b2d5c) 10%, transparent); }
.sd-det { margin-top: 10px; border: 1px solid var(--line); border-radius: 12px; padding: 6px 12px; }
.sd-det summary { cursor: pointer; font-weight: 700; font-size: .85rem; padding: 4px 0; }
.sd-h4 { margin: 12px 0 4px; font-size: .86rem; }
.sd-steps { display: grid; gap: 3px; }
.sd-ref { margin: 0 0 4px; font-size: .74rem; color: var(--muted); }
.sd-eq { display: grid; grid-template-columns: minmax(150px, 1.1fr) minmax(0, 1.6fr) auto; gap: 10px; align-items: baseline; padding: 4px 8px; border-radius: 8px; background: var(--bg); font-size: .8rem; }
.sd-eq code { font-family: var(--font-mono, monospace); font-size: .76rem; white-space: normal; }
.sd-eq code i { color: var(--muted); font-style: normal; }
.sd-eq b { font-family: var(--font-mono, monospace); white-space: nowrap; }
.sd-eq.bad { background: #fde8e6; } [data-mode="dark"] .sd-eq.bad { background: #43201d; }
@media (max-width: 640px) { .sd-eq { grid-template-columns: 1fr; gap: 2px; } }