:root {
  --paper: #F5F4EF;
  --ink: #141B2D;
  --accent: #3346F5;
  --accent-hover: #2538D6;
  --muted: #5B6275;
  --rule: #D9D7CC;
  --card: #FFFFFF;
  --chip: #EEECE3;
  --note-bg: #FFF7E0;
  --note-border: #E8D9A6;
  --note-ink: #5A4300;
  color-scheme: light;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 16px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  overflow-wrap: break-word;
}

a { color: var(--accent); }
a:hover { text-decoration-thickness: 2px; }

.shell {
  max-width: 760px;
  margin: 0 auto;
  padding: 20px 16px 56px;
}

.top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 20px;
  padding: 8px 0 22px;
  margin-bottom: 26px;
  border-bottom: 1px solid var(--rule);
}

.brand {
  color: var(--ink);
  font-weight: 800;
  font-size: 17px;
  text-decoration: none;
}

.top nav {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
}

.top nav a {
  color: var(--muted);
  font-size: 14px;
  text-decoration: none;
}

.top nav a:hover { color: var(--ink); text-decoration: underline; }

main {
  background: var(--card);
  border: 1px solid var(--rule);
  border-radius: 16px;
  padding: 28px 24px;
}

.eyebrow {
  display: inline-block;
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1 {
  font-size: 30px;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 8px 0 10px;
}

h2 {
  font-size: 19px;
  line-height: 1.3;
  margin: 28px 0 8px;
}

p { margin: 10px 0; }

ul, ol { padding-left: 22px; }
li { margin: 6px 0; }

.meta {
  color: var(--muted);
  font-size: 14px;
  margin: 0;
}

.rule {
  height: 3px;
  width: 56px;
  background: var(--accent);
  border-radius: 2px;
  margin: 18px 0 4px;
}

.lead { font-size: 18px; color: var(--ink); }

.notice {
  background: var(--note-bg);
  border: 1px solid var(--note-border);
  color: var(--note-ink);
  border-radius: 12px;
  padding: 14px 16px;
  margin: 20px 0;
  font-size: 15px;
}

.notice strong { color: var(--note-ink); }

.btn {
  display: inline-block;
  background: var(--accent);
  color: #FFFFFF;
  text-decoration: none;
  font-weight: 700;
  padding: 11px 18px;
  border-radius: 10px;
  margin: 8px 0;
}

.btn:hover { background: var(--accent-hover); }

.table-wrap {
  overflow-x: auto;
  margin: 12px 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

th, td {
  text-align: left;
  vertical-align: top;
  padding: 8px 10px;
  border-bottom: 1px solid var(--rule);
}

th { color: var(--muted); font-weight: 600; }

code {
  font-family: ui-monospace, Consolas, "Courier New", monospace;
  font-size: 14px;
  background: var(--chip);
  padding: 1px 5px;
  border-radius: 4px;
  word-break: break-all;
}

footer {
  color: var(--muted);
  font-size: 13px;
  margin-top: 28px;
  text-align: center;
}

@media (max-width: 480px) {
  .shell { padding: 16px 16px 40px; }
  h1 { font-size: 26px; }
  main { padding: 22px 18px; }
}