@page { size: A4; margin: 12mm; }
* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  background: #fff; color: #000;
  font-family: "Times New Roman", Times, serif;
  font-size: 12pt;
  line-height: 1.32;
}
h1 {
  font-size: 15pt; font-weight: bold; margin: 0 0 3mm 0;
  border-bottom: 1pt solid #000; padding-bottom: 2mm;
}
h2 {
  font-size: 12.5pt; font-weight: bold; margin: 5mm 0 2mm 0;
}
h3 {
  font-size: 12pt; font-weight: bold; font-style: italic; margin: 3.5mm 0 1.5mm 0;
}
p { margin: 0 0 2.5mm 0; text-align: justify; }
ul, ol { margin: 0 0 2.5mm 0; padding-left: 5mm; }
li { margin-bottom: 1mm; text-align: justify; }
table { border-collapse: collapse; width: 100%; margin: 2.5mm 0 3.5mm 0; font-size: 10.5pt; }
th, td { border: 0.5pt solid #444; padding: 1.2mm 2mm; text-align: left; vertical-align: top; }
th { background: #e8e8e8; font-weight: bold; }
.meta {
  font-size: 10.5pt; color: #222; margin-bottom: 4mm;
}
.meta table { font-size: 10.5pt; }
.meta td, .meta th { border: none; padding: 0.5mm 3mm 0.5mm 0; }
.small { font-size: 10.5pt; }
.footnote { font-size: 9.5pt; color: #333; }
strong, b { font-weight: bold; }
em, i { font-style: italic; }
.pagefoot {
  position: fixed; bottom: 0; left: 0; right: 0;
  font-size: 8.5pt; color: #555; text-align: center;
  border-top: 0.4pt solid #999; padding-top: 1mm;
}
code, .mono { font-family: "Courier New", Courier, monospace; font-size: 10.5pt; }
body.refs { font-size: 10pt; }
body.refs h1 { font-size: 14pt; }
p.ref-list {
  font-size: 10pt; line-height: 1.35;
  margin: 0 0 2mm 0; text-align: left; text-indent: -6mm; padding-left: 6mm;
}
.figcap { font-size: 9.5pt; font-style: italic; color: #333; margin: 1mm 0 3mm 0; }
.svgwrap { margin: 2mm 0 3mm 0; }

/* ── Schematic diagrams (inline SVG) ───────────────────────────────── */
.figure { margin: 2mm 0 4mm 0; }
.sch-box { fill: #fff; stroke: #000; stroke-width: 1.2; }
.sch-box-strong { stroke-width: 1.6; }
.sch-label { font-family: "Times New Roman", Times, serif; font-size: 9.5px; fill: #000; }
.sch-sublabel { font-family: "Times New Roman", Times, serif; font-size: 8px; fill: #333; }
.sch-arrow { stroke: #000; stroke-width: 1.4; }
.sch-arrowhead { fill: #000; }