:root {
  color-scheme: light;
  --bg: #f7f9fb;
  --paper: #ffffff;
  --ink: #17202a;
  --muted: #5f6f82;
  --line: #d8e0e8;
  --brand: #0f766e;
  --brand-dark: #0b534f;
  --soft: #e9f7f4;
  --warn: #8a4b00;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Sarabun", "Thonburi", "Tahoma", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.62;
}
a { color: var(--brand-dark); text-decoration-thickness: 1px; text-underline-offset: 3px; }
.layout { display: grid; grid-template-columns: 270px 1fr; min-height: 100vh; }
aside {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 28px 20px;
  background: #111827;
  color: #f9fafb;
  overflow-y: auto;
}
.brand { font-size: 22px; font-weight: 800; letter-spacing: 0; margin-bottom: 6px; }
.meta { color: #b6c3d1; font-size: 13px; margin-bottom: 24px; }
nav a {
  display: block;
  color: #e7edf5;
  text-decoration: none;
  padding: 9px 10px;
  border-radius: 8px;
  margin-bottom: 4px;
  font-size: 15px;
}
nav a:hover, nav a.active { background: rgba(255,255,255,.12); }
main { padding: 42px min(5vw, 64px); max-width: 1480px; width: 100%; }
.content {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: min(4vw, 44px);
  box-shadow: 0 6px 24px rgba(23, 32, 42, .05);
}
h1, h2, h3, h4 { line-height: 1.28; letter-spacing: 0; margin: 1.5em 0 .55em; }
h1 { margin-top: 0; font-size: clamp(30px, 4vw, 44px); }
h2 { border-top: 1px solid var(--line); padding-top: 28px; font-size: 25px; }
h3 { font-size: 20px; color: #243447; }
p { margin: .65em 0; }
blockquote {
  margin: 18px 0;
  padding: 14px 16px;
  background: var(--soft);
  border-left: 4px solid var(--brand);
  color: #1f3e3b;
  border-radius: 8px;
}
code {
  background: #eef2f7;
  padding: 2px 5px;
  border-radius: 5px;
  font-size: .92em;
}
pre {
  background: #111827;
  color: #f9fafb;
  padding: 16px;
  border-radius: 8px;
  overflow-x: auto;
}
.table-wrap { overflow-x: auto; margin: 18px 0 26px; border: 1px solid var(--line); border-radius: 8px; }
table { width: 100%; border-collapse: collapse; font-size: 14px; background: white; }
th, td { border-bottom: 1px solid var(--line); padding: 9px 11px; text-align: left; vertical-align: top; }
th { background: #eef4f8; font-weight: 700; position: sticky; top: 0; z-index: 1; }
tr:nth-child(even) td { background: #fbfdff; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 14px; margin: 24px 0; }
.card {
  display: block;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  text-decoration: none;
  color: var(--ink);
}
.card strong { display: block; font-size: 18px; margin-bottom: 5px; color: var(--brand-dark); }
.card span { color: var(--muted); font-size: 14px; }
.notice { color: var(--warn); background: #fff7e6; border: 1px solid #f3d19c; padding: 13px 15px; border-radius: 8px; }
.count { color: var(--muted); font-size: 14px; margin-top: -8px; }
.searchbox {
  width: 100%;
  padding: 13px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 16px;
  margin: 12px 0 18px;
}
.footer { color: var(--muted); font-size: 13px; margin-top: 32px; }
@media (max-width: 860px) {
  .layout { display: block; }
  aside { position: relative; height: auto; }
  main { padding: 18px; }
  .content { padding: 22px; }
}
@media print {
  aside { display: none; }
  .layout { display: block; }
  main { padding: 0; }
  .content { border: 0; box-shadow: none; }
}