/* 保留 M7 現有色系，以清楚的比較層級呈現接地設計。 */
#grounding-safety{--safety-ink:#35352e;--safety-muted:#625f50;--safety-m7:#825529;--safety-film:#3f6674;--safety-line:#d8cfbc;--safety-paper:#f7f0e1;color:var(--safety-ink);padding-block:64px;scroll-margin-top:var(--site-header-height,100px)}
#grounding-safety .grounding-heading{max-width:800px;margin:0 0 32px}
#grounding-safety h2{font-family:var(--serif);font-size:clamp(28px,3.2vw,42px);line-height:1.5;margin:12px 0 20px;letter-spacing:0}
#grounding-safety h3{font-family:var(--sans);font-size:21px;line-height:1.65;margin:0 0 12px}
#grounding-safety p,#grounding-safety li,#grounding-safety dd{font-size:16px;line-height:1.95;overflow-wrap:anywhere}
#grounding-safety p{margin:0 0 16px;max-width:80ch}
#grounding-safety .grounding-lead{font-size:18px;color:var(--safety-muted)}
#grounding-safety .grounding-premise{padding:24px 28px;background:var(--safety-paper);border-left:4px solid var(--safety-m7);margin:0 0 36px}
#grounding-safety .grounding-premise p{max-width:none;margin:0}
#grounding-safety .grounding-premise strong{font-weight:600}
#grounding-safety .grounding-explanation{max-width:850px;margin:0 0 36px}
#grounding-safety .grounding-emphasis{font-weight:600;color:var(--safety-m7)}
#grounding-safety .grounding-table-wrap{display:block;margin:28px 0 40px;width:100%;max-width:100%;min-width:0}
#grounding-safety .grounding-table{width:100%;border-collapse:collapse;table-layout:fixed;font-size:16px;line-height:1.85}
/* 標題放在原生表格外，避免 iPhone 將 caption 壓成一字寬。 */
#grounding-safety .grounding-table-title{display:block;width:100%;max-width:100%;min-width:0;text-align:left;font-size:20px;font-weight:600;line-height:1.7;margin:0 0 16px;padding:0;white-space:normal;word-break:normal;overflow-wrap:break-word}
#grounding-safety th,#grounding-safety td{vertical-align:top;text-align:left;padding:18px 20px;border-bottom:1px solid var(--safety-line);overflow-wrap:anywhere}
#grounding-safety thead th{background:#e7dcc5;border-top:2px solid var(--safety-m7)}
#grounding-safety thead th:first-child{width:18%}
#grounding-safety thead th:nth-child(2){color:var(--safety-m7)}
#grounding-safety thead th:nth-child(3){color:var(--safety-film)}
#grounding-safety thead small{display:block;font-size:13px;line-height:1.7;font-weight:400;margin-top:6px;color:var(--safety-muted)}
#grounding-safety tbody th{font-weight:600;background:#eee5d3}
#grounding-safety tbody td{background:var(--safety-paper)}
#grounding-safety .grounding-evidence{padding:0;margin:0 0 32px;max-width:850px;background:none}
#grounding-safety ul{padding-left:24px;margin:16px 0}
#grounding-safety li{margin:0 0 12px}
#grounding-safety .grounding-references{border-block:1px solid var(--safety-line);padding:0;margin:0 0 28px}
#grounding-safety summary{cursor:pointer;min-height:48px;padding:18px 0;font-size:18px;font-weight:600;line-height:1.7}
#grounding-safety dl{margin:0 0 20px}
#grounding-safety dl>div{padding:18px 0;border-top:1px solid var(--safety-line)}
#grounding-safety dt{font-size:17px;font-weight:600;line-height:1.8}
#grounding-safety dd{margin:8px 0 0;max-width:80ch}
#grounding-safety a{color:var(--safety-m7);text-underline-offset:4px}
#grounding-safety a:focus-visible,#grounding-safety summary:focus-visible{outline:3px solid var(--safety-film);outline-offset:5px}
#grounding-safety .grounding-closing{font-family:var(--serif);font-size:22px;margin:0;padding-top:8px}
#cable-film-guide .grounding-guide-note{margin-top:18px;font-size:14px;color:#625f50}
#cable-film-guide .grounding-guide-link{display:inline-block;margin-top:18px;padding:8px 0;font-size:16px;color:#825529;text-underline-offset:4px}
@media(max-width:640px){
  #grounding-safety{padding-block:40px}
  #grounding-safety .grounding-premise{padding:20px}
  #grounding-safety .grounding-table,#grounding-safety tbody{display:block;width:100%;max-width:100%;min-width:0}
  #grounding-safety .grounding-table{table-layout:auto}
  #grounding-safety thead{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}
  #grounding-safety tbody tr{display:block;box-sizing:border-box;width:100%;margin:0 0 20px;border:1px solid var(--safety-line)}
  #grounding-safety tbody th,#grounding-safety td{display:block;box-sizing:border-box;width:100%;min-width:0;padding:14px 18px}
  #grounding-safety tbody td:last-child{border-bottom:0}
  #grounding-safety td::before{content:attr(data-label);display:block;font-size:14px;font-weight:600;color:var(--safety-m7);margin-bottom:6px}
  #grounding-safety td:last-child::before{color:var(--safety-film)}
}