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/* ── 正态性检查与非参数核对 ─────────────────────────── */
.normality-check{margin-top:22px;background:var(--surface,#fffdf7);border:1px solid var(--line,#d8d5ca);border-radius:16px;padding:18px 20px}
.normality-check h3{margin:0 0 4px}
.normality-note{color:var(--muted,#667069);font-size:13.5px;margin:0 0 12px;max-width:860px}
.qq-charts{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:18px}
.qq-item{margin:0}
.qq-item svg{width:100%;height:auto;background:#fff;border:1px solid var(--line,#d8d5ca);border-radius:12px}
.qq-item figcaption{font-size:13px;color:var(--muted,#667069);margin-top:6px}
.np-advice{background:rgba(205,233,106,.25);border-left:3px solid var(--green-2,#2d7257);padding:9px 13px;border-radius:0 9px 9px 0;font-size:13.5px;line-height:1.7;margin:12px 0 0}