@font-face {
  font-family: 'Luckiest Guy';
  src: url('/LuckiestGuy-Regular.ttf') format('truetype');
  font-display: swap;
}
:root {
  --brand: #016dcb;
  --brand-dark: #014e93;
  --ink: #1a2330;
  --muted: #54627a;
  --line: #e3e8f0;
  --bg: #f7f9fc;
  --card: #ffffff;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a {
  color: var(--brand);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}
.topbar {
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-dark) 100%);
  color: #fff;
  padding: 28px 20px 26px;
}
.topbar-inner {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 14px;
}
.topbar img {
  width: 44px;
  height: 44px;
  border-radius: 10px;
}
.topbar .brand {
  font-family: 'Luckiest Guy', system-ui, sans-serif;
  letter-spacing: 0.5px;
  font-size: 22px;
  line-height: 1;
}
.topbar .sub {
  font-size: 13px;
  opacity: 0.85;
  margin-top: 2px;
}
main {
  max-width: 820px;
  margin: -18px auto 64px;
  padding: 0 20px;
}
.sheet {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 36px clamp(20px, 5vw, 48px) 44px;
  box-shadow: 0 12px 40px rgba(1, 78, 147, 0.08);
}
h1 {
  font-family: 'Luckiest Guy', system-ui, sans-serif;
  color: var(--brand-dark);
  font-size: clamp(28px, 6vw, 40px);
  margin: 4px 0 6px;
  letter-spacing: 0.5px;
}
.meta {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 28px;
}
h2 {
  font-size: 21px;
  margin: 36px 0 10px;
  color: var(--brand-dark);
  scroll-margin-top: 20px;
}
h3 {
  font-size: 16px;
  margin: 22px 0 6px;
}
p,
li {
  font-size: 16px;
  color: var(--ink);
}
ul {
  padding-left: 22px;
}
li {
  margin: 6px 0;
}
.lead {
  font-size: 17px;
  color: var(--muted);
}
.callout {
  background: #eef5ff;
  border-left: 4px solid var(--brand);
  border-radius: 8px;
  padding: 14px 18px;
  margin: 18px 0;
  font-size: 15px;
}
pre {
  background: #0b0c1e;
  color: #e8eef8;
  border-radius: 10px;
  padding: 14px 16px;
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.5;
}
code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.92em;
}
p code,
li code {
  background: #eef5ff;
  padding: 1px 5px;
  border-radius: 4px;
}
pre code {
  background: none;
  padding: 0;
  color: inherit;
}
table {
  width: 100%;
  border-collapse: collapse;
  margin: 14px 0;
  font-size: 14px;
}
th,
td {
  text-align: left;
  padding: 10px 12px;
  border: 1px solid var(--line);
  vertical-align: top;
}
th {
  background: var(--bg);
  font-weight: 600;
}
.doclinks {
  margin: 18px 0 6px;
  font-size: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  align-items: center;
}
.doclinks a {
  font-weight: 600;
}
footer {
  max-width: 820px;
  margin: 0 auto;
  padding: 0 20px 48px;
  color: var(--muted);
  font-size: 13px;
  text-align: center;
}
hr {
  border: none;
  border-top: 1px solid var(--line);
  margin: 36px 0;
}