/* RFP V2.0 完整阅读版 / 打印优化 CSS */
:root {
  --primary: #1F4E79;
  --secondary: #2F7D32;
  --accent: #6A1B9A;
  --warn: #E65100;
  --danger: #C62828;
  --bg: #FAFAFA;
  --border: #DDD;
}
* { box-sizing: border-box; }
body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Source Han Sans", sans-serif;
  margin: 0;
  background: var(--bg);
  color: #222;
  line-height: 1.7;
  font-size: 14px;
}

/* 顶部 banner */
header {
  background: linear-gradient(135deg, var(--primary) 0%, #163d5e 100%);
  color: white; padding: 36px 48px;
}
header h1.title { margin: 0 0 8px; font-size: 28px; font-weight: 700; }
header .subtitle, header .author, header .date { font-size: 14px; opacity: 0.92; margin: 4px 0; }

/* 主内容区 */
main, #TOC, .container {
  max-width: 980px;
  margin: 0 auto;
  padding: 32px 48px;
  background: white;
  box-shadow: 0 2px 12px rgba(0,0,0,0.05);
}
main { padding-top: 0; }

#TOC {
  background: #F5F7FA;
  border-left: 4px solid var(--primary);
  padding: 16px 32px;
  margin: 0 auto 24px;
}
#TOC ul { margin: 0; padding-left: 22px; line-height: 1.8; }
#TOC > ul { columns: 2; column-gap: 32px; }
#TOC a { color: #444; text-decoration: none; font-size: 13px; }
#TOC a:hover { color: var(--primary); text-decoration: underline; }
#TOC ul ul { columns: 1; }

/* 标题 */
h1 {
  font-size: 26px;
  color: #111;
  border-bottom: 3px solid var(--primary);
  padding-bottom: 8px;
  margin: 36px 0 20px;
  page-break-before: auto;
}
h1:first-of-type { page-break-before: avoid; }

h2 {
  font-size: 21px;
  color: #111;
  border-left: 4px solid var(--primary);
  padding-left: 14px;
  margin: 32px 0 16px;
}

h3 {
  font-size: 17px;
  color: #333;
  margin: 24px 0 10px;
}

h4 {
  font-size: 15px;
  color: #444;
  margin: 16px 0 8px;
}

p { margin: 8px 0 12px; }

/* 表格 */
table {
  width: 100%;
  border-collapse: collapse;
  background: white;
  font-size: 12.5px;
  margin: 14px 0;
  page-break-inside: avoid;
}
th {
  background: #ECEFF1;
  text-align: left;
  padding: 8px 10px;
  font-weight: 600;
  border: 1px solid var(--border);
}
td {
  padding: 7px 10px;
  border: 1px solid var(--border);
  vertical-align: top;
}
tr:nth-child(even) td { background: #FAFBFC; }

/* 列表 */
ul, ol { margin: 8px 0 14px; padding-left: 26px; }
li { margin: 4px 0; }

/* 代码块 */
pre, code {
  font-family: SF Mono, Menlo, Consolas, monospace;
  font-size: 12.5px;
}
pre {
  background: #F5F5F5;
  padding: 14px 16px;
  border-radius: 6px;
  overflow-x: auto;
  border-left: 4px solid var(--primary);
  page-break-inside: avoid;
}
code { background: #F5F5F5; padding: 1px 5px; border-radius: 3px; }
pre code { background: transparent; padding: 0; }

/* 强调和提示 */
strong { color: #111; font-weight: 600; }
em { color: #555; }
hr {
  border: none;
  border-top: 2px dashed var(--border);
  margin: 40px 0;
}

blockquote {
  border-left: 4px solid var(--accent);
  background: #F9F4FB;
  padding: 12px 18px;
  margin: 14px 0;
  color: #444;
  font-style: italic;
}

/* 印章符号 / 强制项 */
p:has(strong:first-child) { line-height: 1.7; }

/* 页眉印 */
.cover-stamp {
  position: relative;
  text-align: center;
  padding: 60px 0;
  border: 6px double var(--primary);
  margin: 40px 0;
  font-size: 24px;
  color: var(--primary);
  font-weight: bold;
}

/* 打印优化 */
@media print {
  body { background: white; font-size: 11px; line-height: 1.5; }
  header { padding: 24px 28px; }
  header h1.title { font-size: 22px; }
  main, #TOC, .container {
    box-shadow: none;
    max-width: none;
    padding: 16px 24px;
  }
  h1 { font-size: 20px; page-break-before: always; }
  h1:first-of-type { page-break-before: avoid; }
  h2 { font-size: 16px; page-break-after: avoid; }
  h3 { font-size: 14px; page-break-after: avoid; }
  table { font-size: 10px; page-break-inside: avoid; }
  th, td { padding: 4px 6px; }
  pre, blockquote, table { page-break-inside: avoid; }
  a { color: black; text-decoration: none; }
  a[href]:after { content: ""; }

  @page {
    size: A4;
    margin: 16mm 14mm 18mm 14mm;
    @bottom-center {
      content: "宁波亚大供气站充装系统设备招标文件 v2.0  ·  第 " counter(page) " / " counter(pages) " 页";
      font-size: 9px;
      color: #888;
    }
    @top-right {
      content: "v2.0 · 2026-05-10";
      font-size: 9px;
      color: #888;
    }
  }
}