:root{--bg: #f4f7fa;--panel: #ffffff;--panel-2: #eaeff6;--text: #1c2b3a;--muted: #64748b;--border: #d3dce7;--rule: #e4eaf1;--accent: #d97706;--accent-soft: #fdf3e3;--wire: #2563eb;--earth: #15803d;--earth-soft: #eaf6ef;--wire-dc: #c2410c;--link: #1d4ed8;--good: #15803d;--warn: #c2410c;--mono: ui-monospace, "Cascadia Mono", Consolas, "SF Mono", monospace}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Hiragino Kaku Gothic ProN,Hiragino Sans,BIZ UDPGothic,Meiryo,sans-serif;color:var(--text);background:var(--bg);line-height:1.9;font-size:16px;background-image:linear-gradient(var(--rule) 1px,transparent 1px),linear-gradient(90deg,var(--rule) 1px,transparent 1px);background-size:24px 24px}::selection{background:var(--accent);color:#fff}header.site-header{background:#fff;padding:14px 16px 10px;border-bottom:2px solid 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