.admin.explain { max-width: 960px; }
.explain .lead { font-size: 15px; line-height: 1.55; margin: 4px 0 10px; }
.explain h3 { font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px; color: var(--muted); margin: 18px 0 6px; }
.explain .rules, .explain .rules ul { list-style: none; margin: 6px 0; padding-left: 0; }
.explain .rules ul { padding-left: 22px; border-left: 2px solid var(--line); margin-left: 6px; }
.explain .rules li { margin: 6px 0; }
.explain .rules .group { font-weight: 600; }
.explain .rules .meaning { display: block; color: var(--muted); font-size: 12px; font-weight: 400; margin-top: 1px; }
.explain .rules .cond::before { content: "\2713"; color: var(--pos); margin-right: 8px; font-weight: 700; }
.explain .facts { display: grid; grid-template-columns: 170px minmax(0, 1fr); gap: 8px 16px; margin: 10px 0; }
.explain .facts dt { color: var(--muted); }
.explain .facts dd { margin: 0; }
.explain .facts dd ul { margin: 0; padding-left: 18px; }
.explain #payoff { width: 100%; height: auto; background: var(--surface); border: 1px solid var(--line); border-radius: 6px; display: block; }
.explain #payoff .axis { stroke: var(--line); stroke-width: 1; }
.explain #payoff .zero { stroke: var(--muted); stroke-width: 1; }
.explain #payoff .label { fill: var(--muted); font-size: 11px; font-family: inherit; }
.explain #payoff .gain { fill: var(--pos-bar); opacity: 0.35; }
.explain #payoff .loss { fill: var(--neg-bar); opacity: 0.35; }
.explain #payoff .curve { fill: none; stroke: var(--text); stroke-width: 2; }
.explain #payoff .be { stroke: var(--accent); stroke-width: 1; stroke-dasharray: 4 3; }
.explain #payoff .leg { stroke: var(--muted); stroke-width: 1; stroke-dasharray: 2 3; }
.explain #payoff .start { stroke: var(--spot); stroke-width: 1.5; }
.explain #payoff text.note { fill: var(--text); font-size: 11px; }
.explain .keys { list-style: none; display: flex; flex-wrap: wrap; gap: 4px 18px; padding: 0; margin: 8px 0; font-size: 12px; }
.explain .keys li::before { content: ""; display: inline-block; width: 12px; height: 10px; margin-right: 6px; vertical-align: middle; }
.explain .keys .k-gain::before { background: var(--pos-bar); opacity: 0.6; }
.explain .keys .k-loss::before { background: var(--neg-bar); opacity: 0.6; }
.explain .keys .k-leg::before { height: 0; border-top: 2px dotted var(--muted); }
.explain .keys .k-be::before { height: 0; border-top: 2px dashed var(--accent); }
@media (max-width: 700px) { .explain .facts { grid-template-columns: 1fr; } }
.explain .foot a { color: var(--accent); }