/* MHW 业务参考文档 — 统一样式 */
:root {
  --bg: #f8fafc;
  --card: #fff;
  --text: #0f172a;
  --muted: #64748b;
  --accent: #2563eb;
  --border: #e2e8f0;
  --code-bg: #f1f5f9;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  font-size: 15px;
}
.wrap { max-width: 960px; margin: 0 auto; padding: 24px 20px 64px; }
.topbar {
  background: linear-gradient(135deg, #1e3a5f, #2563eb);
  color: #fff;
  padding: 14px 20px;
  font-size: 14px;
}
.topbar a { color: #bfdbfe; margin-left: 12px; }
.topbar a:hover { color: #fff; }
h1 { font-size: 1.75rem; margin: 0 0 8px; }
h2 { font-size: 1.25rem; margin: 32px 0 12px; border-bottom: 2px solid var(--border); padding-bottom: 6px; }
h3 { font-size: 1.05rem; margin: 20px 0 8px; color: #334155; }
.meta { color: var(--muted); font-size: 14px; margin-bottom: 24px; }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 18px;
  margin: 12px 0;
}
table { width: 100%; border-collapse: collapse; font-size: 14px; margin: 12px 0; }
th, td { border: 1px solid var(--border); padding: 8px 10px; text-align: left; vertical-align: top; }
th { background: #f1f5f9; font-weight: 600; }
code, pre { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 13px; }
code { background: var(--code-bg); padding: 2px 6px; border-radius: 4px; }
pre {
  background: #0f172a;
  color: #e2e8f0;
  padding: 14px 16px;
  border-radius: 8px;
  overflow-x: auto;
  line-height: 1.5;
}
ul, ol { padding-left: 1.4em; }
li { margin: 4px 0; }
.tag {
  display: inline-block;
  background: #dbeafe;
  color: #1d4ed8;
  font-size: 12px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 999px;
  margin-right: 6px;
}
.flow { background: #eff6ff; border-left: 4px solid var(--accent); padding: 12px 16px; margin: 12px 0; border-radius: 0 8px 8px 0; }
.hub-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 12px; margin-top: 16px; }
.hub-card {
  display: block;
  text-decoration: none;
  color: inherit;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
  transition: border-color .15s, box-shadow .15s;
}
.hub-card:hover { border-color: var(--accent); box-shadow: 0 4px 12px rgba(37,99,235,.12); }
.hub-card strong { display: block; margin-bottom: 4px; }
.card h3 { margin: 0 0 10px; font-size: 1rem; color: #1e40af; }
.card h3 + p, .card h3 + ul, .card h3 + ol, .card h3 + table { margin-top: 0; }