/* 烧伤：人体分区地图 + 四项结果格，区别于量表与输入卡 */

.bn-copy { min-width: 0; }
.bn-hl { color: var(--dk-accent); }

.bn-jump { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.bn-jump a {
    padding: 6px 12px; font-size: 12.5px; color: var(--dk-ink-2); text-decoration: none;
    border: 1px solid var(--dk-line); border-radius: 99px; background: var(--dk-surface);
    transition: color .14s, border-color .14s, background .14s;
}
.bn-jump a:hover { color: var(--dk-accent); border-color: var(--dk-accent-line); background: var(--dk-accent-soft); }

#bnRule, #bnParkland, #bnCare, #bnFaq { scroll-margin-top: 84px; }

.bn-tool { position: sticky; top: 82px; }

.bn-form {
    display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px; padding: 14px 16px 6px;
}
.bn-field { display: grid; gap: 5px; min-width: 0; }
.bn-field > span:first-child { font-size: 12px; font-weight: 600; color: var(--dk-ink-2); }
.bn-box {
    display: flex; align-items: center; gap: 5px; height: 36px; padding: 0 9px;
    border: 1px solid var(--dk-line-strong); border-radius: 8px; background: var(--dk-surface);
    transition: border-color .15s, box-shadow .15s;
}
.bn-box:focus-within { border-color: var(--dk-accent); box-shadow: 0 0 0 3px var(--dk-accent-soft); }
.bn-box input {
    flex: 1; min-width: 0; height: 100%; border: 0; outline: none; padding: 0;
    background: transparent; color: var(--dk-ink);
    font-family: var(--dk-mono); font-size: 13.5px;
}
.bn-box i { font-style: normal; font-size: 10.5px; color: var(--dk-muted); white-space: nowrap; }

.bn-region-t { margin: 6px 16px 0; font-size: 12px; font-weight: 600; color: var(--dk-ink-2); }
.bn-region-t span { font-weight: 400; color: var(--dk-muted); }

/* 人体分区地图 */
.bn-map {
    display: grid; gap: 6px; padding: 10px 16px 0;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    grid-template-areas:
        ". . head head . ."
        "armL trunkF trunkF trunkB trunkB armR"
        "legL legL perineum perineum legR legR";
}
.bn-region {
    display: grid; gap: 1px; justify-items: center; align-content: center;
    min-height: 46px; padding: 6px 2px; cursor: pointer;
    border: 1px dashed var(--dk-line-strong); border-radius: 9px;
    background: var(--dk-surface); color: var(--dk-ink-2);
    transition: border-color .14s, background .14s, color .14s, border-style .14s;
}
.bn-region b { font-size: 12px; font-weight: 700; }
.bn-region span { font-family: var(--dk-mono); font-size: 10.5px; color: var(--dk-muted); }
.bn-region:hover { border-color: var(--dk-accent); color: var(--dk-accent); }
.bn-region[aria-pressed="true"] {
    border-style: solid; border-color: var(--dk-accent);
    background: color-mix(in srgb, var(--dk-accent) 12%, var(--dk-surface));
    color: var(--dk-accent);
}
.bn-region[aria-pressed="true"] span { color: var(--dk-accent); }
.bn-region:focus-visible { outline: 2px solid var(--dk-accent); outline-offset: 2px; }

.bn-region--head { grid-area: head; }
.bn-region--armL { grid-area: armL; }
.bn-region--trunkF { grid-area: trunkF; }
.bn-region--trunkB { grid-area: trunkB; }
.bn-region--armR { grid-area: armR; }
.bn-region--legL { grid-area: legL; }
.bn-region--legR { grid-area: legR; }
.bn-region--perineum { grid-area: perineum; min-height: 40px; }

.bn-legend { margin: 8px 16px 0; font-size: 11px; line-height: 1.6; color: var(--dk-muted); }

/* 结果四格 */
.bn-result {
    display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1px; margin-top: 12px;
    border-top: 1px solid var(--dk-line);
    background: var(--dk-line);
}
.bn-cell {
    display: grid; gap: 3px; padding: 12px 10px;
    background: var(--dk-surface-2);
}
.bn-k { font-size: 10.5px; color: var(--dk-muted); }
.bn-cell b {
    font-family: var(--cl-serif); font-size: 19px; line-height: 1.2;
    color: var(--dk-ink); font-variant-numeric: tabular-nums; white-space: nowrap;
}
.bn-cell:first-child b { color: var(--dk-accent); font-size: 24px; }

.bn-note { padding: 10px 16px 0; }
.bn-note p { margin: 0; }
.bn-note #bnFormula { font-family: var(--dk-mono); font-size: 11.5px; line-height: 1.7; color: var(--dk-ink-2); }
.bn-hint { margin-top: 3px !important; font-size: 11.5px; line-height: 1.6; color: var(--dk-muted); }

.bn-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; padding: 12px 16px 16px; }
.bn-presets { display: inline-flex; flex-wrap: wrap; gap: 6px; margin-left: auto; }
.bn-preset {
    border: 1px dashed var(--dk-line-strong); background: transparent;
    color: var(--dk-muted); font-size: 11.5px; padding: 4px 9px; border-radius: 99px; cursor: pointer;
    transition: color .14s, border-color .14s;
}
.bn-preset:hover { color: var(--dk-accent); border-color: var(--dk-accent-line); }

.bn-rel { display: block; }
.bn-rel h3 { font-size: 15.5px; margin-bottom: 6px; }
.bn-rel p { margin: 0; font-size: 13px; color: var(--dk-muted); line-height: 1.65; }

:root[data-theme="dark"] .bn-cell b { color: var(--dk-ink); }
:root[data-theme="dark"] .bn-cell:first-child b,
:root[data-theme="dark"] .bn-region[aria-pressed="true"],
:root[data-theme="dark"] .bn-region[aria-pressed="true"] span,
:root[data-theme="dark"] .bn-jump a:hover,
:root[data-theme="dark"] .bn-preset:hover { color: #fca5a5; }

@media (max-width: 960px) { .bn-tool { position: static; } }

@media (max-width: 620px) {
    .bn-form { grid-template-columns: 1fr; }
    .bn-result { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .bn-map {
        grid-template-columns: repeat(4, minmax(0, 1fr));
        grid-template-areas:
            "head head head head"
            "armL trunkF trunkB armR"
            "legL legL legR legR"
            "perineum perineum perineum perineum";
    }
    .bn-presets { margin-left: 0; }
    .bn-tool .dk-tool-head h2 { min-width: 0; }
    .bn-tool .dk-tool-head > span { flex: none; white-space: nowrap; }
}