/* ===== 畫面 ===== */
:root {
  --primary: #b01e54; --primary-dark: #8a1742; --primary-soft: #fbe9f0;
  --ink: #1f2328; --muted: #5b6470; --border: #d8dde3;
}
* { box-sizing: border-box; }
body {
  margin: 0; padding: 0 16px 64px;
  font-family: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", "微軟正黑體",
               "Heiti TC", sans-serif;
  font-size: 16px; line-height: 1.85; color: var(--ink); background: #f4f6f8;
}
.sheet {
  max-width: 860px; margin: 0 auto; background: #fff; padding: 48px 56px;
  box-shadow: 0 1px 4px rgba(0,0,0,.08); border-radius: 4px;
}
.docmeta {
  border-bottom: 3px solid var(--primary); padding-bottom: 14px; margin-bottom: 28px;
}
.docmeta__org { font-size: 15px; color: var(--muted); letter-spacing: .04em; }
.docmeta__sys { font-size: 13px; color: var(--muted); margin-top: 2px; }
h1 { font-size: 28px; color: var(--primary-dark); margin: 6px 0 4px; line-height: 1.4; }
h2 {
  font-size: 21px; color: var(--primary-dark); margin: 40px 0 14px;
  padding: 8px 0 8px 14px; border-left: 6px solid var(--primary); background: var(--primary-soft);
}
h3 { font-size: 17px; color: var(--ink); margin: 26px 0 10px; border-bottom: 1px solid var(--border); padding-bottom: 5px; }
h4 { font-size: 16px; color: var(--muted); margin: 20px 0 8px; }
p, li { font-size: 15.5px; }
ul, ol { padding-left: 26px; }
li { margin: 5px 0; }
code {
  font-family: "Roboto Mono", Consolas, monospace; font-size: 13.5px;
  background: #f1f3f5; padding: 2px 5px; border-radius: 3px; color: #b4004e;
}
pre {
  background: #f6f8fa; border: 1px solid var(--border); border-radius: 4px;
  padding: 14px 16px; overflow-x: auto; line-height: 1.65;
}
pre code { background: none; padding: 0; color: var(--ink); font-size: 13px; }
table { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: 14.5px; }
th, td { border: 1px solid var(--border); padding: 8px 11px; text-align: left; vertical-align: top; }
th { background: var(--primary-soft); color: var(--primary-dark); font-weight: 700; }
tr:nth-child(even) td { background: #fafbfc; }
blockquote {
  margin: 16px 0; padding: 12px 18px; border-left: 4px solid var(--primary);
  background: #fff8fb; color: #4a4f56;
}
blockquote p { margin: 6px 0; }
hr { border: 0; border-top: 1px solid var(--border); margin: 34px 0; }
a { color: #8a1742; }
strong { color: var(--primary-dark); }
.toolbar {
  position: sticky; top: 0; z-index: 5; max-width: 860px; margin: 0 auto;
  padding: 12px 0; display: flex; gap: 10px; align-items: center; flex-wrap: wrap;
}
.btn {
  font: inherit; font-size: 14px; font-weight: 600; cursor: pointer;
  padding: 9px 18px; border-radius: 4px; border: 1px solid var(--primary);
  background: var(--primary); color: #fff; text-decoration: none; display: inline-block;
}
.btn:hover { background: var(--primary-dark); border-color: var(--primary-dark); }
.btn--ghost { background: #fff; color: var(--primary-dark); }
.btn--ghost:hover { background: var(--primary-soft); }
.btn:focus-visible, a:focus-visible { outline: 3px solid #ffbf47; outline-offset: 2px; }
#toc {
  background: #fafbfc; border: 1px solid var(--border); border-radius: 4px;
  padding: 16px 22px; margin: 0 0 30px;
}
#toc > p { font-weight: 700; color: var(--primary-dark); margin: 0 0 8px; }
#toc ul { margin: 0; padding-left: 20px; }
#toc li { margin: 3px 0; font-size: 14.5px; }

/* ===== 列印（A4）===== */
@page { size: A4; margin: 18mm 16mm 20mm; }
@media print {
  body { background: #fff; padding: 0; font-size: 11.5pt; line-height: 1.7; }
  .sheet { max-width: none; box-shadow: none; padding: 0; border-radius: 0; }
  .toolbar { display: none !important; }
  h1 { font-size: 19pt; }
  h2 {
    font-size: 14.5pt; margin: 18pt 0 8pt; page-break-after: avoid; break-after: avoid;
    background: #f6eef2; border-left-width: 4px;
  }
  h3, h4 { page-break-after: avoid; break-after: avoid; }
  p, li { font-size: 11pt; }
  /* 表格與程式碼區塊不要被硬切成兩頁 */
  table, pre, blockquote { page-break-inside: avoid; break-inside: avoid; }
  tr { page-break-inside: avoid; break-inside: avoid; }
  thead { display: table-header-group; }
  table { font-size: 10pt; }
  th, td { padding: 5px 7px; }
  a { color: #000; text-decoration: none; }
  /* 目錄的頁內錨點在紙本無意義，但保留清單本身當作章節總覽 */
  #toc { page-break-after: always; break-after: page; }
}